CN113829588B - Core pulling mechanism and injection mold - Google Patents
Core pulling mechanism and injection mold Download PDFInfo
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- CN113829588B CN113829588B CN202010590405.0A CN202010590405A CN113829588B CN 113829588 B CN113829588 B CN 113829588B CN 202010590405 A CN202010590405 A CN 202010590405A CN 113829588 B CN113829588 B CN 113829588B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 47
- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 24
- 230000013011 mating Effects 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 description 16
- 238000000926 separation method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a core pulling mechanism and an injection mold, wherein the core pulling mechanism comprises a fixed mold, a fixed mold core, a movable mold, a guide assembly, a connecting assembly and a limiting assembly, wherein the fixed mold and the movable mold are oppositely arranged, the fixed mold core is positioned between the fixed mold and the movable mold, the connecting assembly comprises a first connecting piece and a second connecting piece which are detachably connected, the first connecting piece is arranged on the fixed mold, the second connecting piece is arranged on the movable mold, when the first connecting piece is connected with the second connecting piece, the movable mold is suitable for moving together with the fixed mold along a mold opening direction in a mold opening process, so that the fixed mold core moves on the guide assembly along a direction intersecting the mold opening direction, and when the first connecting piece is separated from the second connecting piece, the limiting assembly is suitable for separating the fixed mold from the movable mold in the mold opening process. The invention has simple structure and reduced matching requirement, and can greatly reduce the cost of the injection mold.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a core pulling mechanism and an injection mold.
Background
In injection molding products, for example, a shell component of an air conditioner, the back-off is a relatively common structure, and lateral core pulling of the products is realized through an oblique top core pulling mechanism, namely separation from the products is realized through oblique movement of an oblique top, however, when the products are in deep cavity back-off, the size of the required core pulling mechanism is large due to large size of the deep cavity back-off, so that the structure is difficult to realize by adopting a common oblique top mode, and an additional matching structure is required to be added, so that the core pulling structure becomes complex, the matching requirement is increased, and the cost of an injection mold is greatly increased.
Disclosure of Invention
The invention solves the problem of providing a core pulling mechanism with a simple structure.
In order to solve the problems, the invention provides a core pulling mechanism which comprises a fixed die, a fixed die core, a movable die, a guide assembly, a connecting assembly and a limiting assembly; the connecting assembly comprises a first connecting piece and a second connecting piece which are detachably connected, wherein the first connecting piece is arranged on the fixed die, and the second connecting piece is arranged on the movable die;
When the first connecting piece is connected with the second connecting piece, the movable die is suitable for moving together with the fixed die along the die opening direction in the die opening process, so that the fixed die core moves on the guide assembly along the direction intersecting with the die opening direction;
When the first connecting piece is separated from the second connecting piece, the limiting assembly is suitable for separating the fixed die from the movable die in a die opening process.
In this way, in the mold opening process, when the first connecting piece is connected with the second connecting piece, the movable mold and the fixed mold move together along the mold opening direction, and in the process, the fixed mold core moves along the direction intersecting with the mold opening direction under the action of the guide component, so that the core pulling of a product is realized; when first connecting piece and second connecting piece separation, the cover half continues to move, and under spacing subassembly's effect, cover half and movable mould mutually separating are convenient for take out the product after the shaping after the movable mould moves to certain distance, for traditional oblique top loose core, its simple structure, the cooperation requirement reduces, can reduce injection mold cost by a wide margin.
Optionally, the first connecting piece comprises an adjusting component with adjustable length, the second connecting piece is provided with a clamping groove structure, and the adjusting component is suitable for being stretched into or separated from the clamping groove structure.
Therefore, the length of the adjusting component is adjustable, so that the adjusting component can extend into the clamping groove structure in an extension state to realize the clamping of the first connecting piece and the second connecting piece so as to facilitate the joint movement of the fixed die and the movable die, and the adjusting component can be separated from the clamping groove structure to realize the separation of the first connecting piece and the second connecting piece in a shortening state so as to enable the fixed die not to move along with the movable die.
Optionally, the first connecting piece further comprises a fixing seat with a placing groove inside, the fixing seat is connected with the fixed die, the adjusting component comprises an elastic piece and a protruding block, the elastic piece is located in the placing groove, one end of the protruding block stretches into the placing groove and is connected with the elastic piece, the protruding block is located in the clamping groove structure when the elastic piece is in an extending state, and the protruding block is separated from the clamping groove structure when the elastic piece is in a contracting state.
Therefore, when the elastic piece is in an extending state, the lug is positioned in the clamping groove structure, and when the elastic piece is in a contracting state, the lug is separated from the clamping groove structure.
Optionally, the second connecting piece includes the stopper, the stopper with the movable mould is connected, the stopper orientation one side of first connecting piece is equipped with the draw-in groove structure.
Like this, stopper is connected with the movable mould to one side towards first connecting piece is equipped with the draw-in groove structure, not only is convenient for cooperate with first connecting piece, the maintenance of being convenient for moreover.
Optionally, the connection assembly further includes a driving member adapted to drive the protrusion out of the card slot structure.
Optionally, the driving piece is a pull rod, the pull rod is suitable for being connected with the hot runner plate or the fixed die plate, the limiting block is provided with a through groove structure which is communicated with the clamping groove structure, one end of the pull rod penetrates through the through groove structure and is provided with a protrusion with a bevel part, and the protrusion is suitable for driving the protrusion to be separated from the clamping groove structure through the bevel part.
Therefore, in the die sinking process, the pull rod and the through groove structure are relatively displaced, when the protrusion of the pull rod is contacted with the protrusion, the protrusion moves towards the inside of the fixing seat in the upward movement process of the protrusion due to the inclined surface of the protrusion and the elastic piece connected with the protrusion, and finally the protrusion is promoted to be separated from the clamping groove structure.
Optionally, the guide assembly comprises a first guide structure and a second guide structure, wherein the first guide structure and the second guide structure are both in sliding connection with the fixed die core so as to guide the fixed die core to move along the core pulling direction.
Optionally, the first guiding structure is a guiding groove structure obliquely arranged on the fixed mold relative to the horizontal plane, the fixed mold core comprises a first sliding block matched with the guiding groove structure, and the first sliding block is in sliding connection with the guiding groove structure.
Like this, the setting of guide way structure and first slider not only is convenient for cover half benevolence along the direction motion of loosing core, simple structure is convenient for produce moreover.
Optionally, the second guiding structure comprises a first block, one end of the first block is suitable for being connected with the hot runner plate, the other end of the first block stretches into the fixed die and is obliquely provided with a first matching piece relative to the horizontal plane, the fixed die is provided with a second matching piece matched with the first matching piece, and the first matching piece is in sliding connection with the second matching piece.
Like this, first cooperation piece is the slope setting on first block, because first cooperation piece and second cooperation piece sliding connection, can produce the displacement in horizontal direction and the vertical direction in the slip process, from this, makes the product drawing of patterns easier.
Optionally, the first mating member is a groove structure disposed on the first block, the second mating member is a boss structure disposed on a side end of the fixed platen, or the first mating member is a boss structure disposed on the first block, the second mating member is a groove structure disposed on a side end of the fixed platen, and the boss structure is adapted to slide in the groove structure.
Therefore, the groove structure and the boss structure are simple in design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
Optionally, the second guiding structure further includes a second block, one end of the second block is suitable for being connected with the hot runner plate, a third matching piece is obliquely arranged at the other end of the second block relative to the horizontal plane, the oblique direction of the third matching piece is parallel to the oblique direction of the first matching piece, a fourth matching piece matched with the third matching piece is arranged on the fixed die, and the third matching piece is in sliding connection with the fourth matching piece.
Like this, the third fitting piece is the slope setting on the second block, and the incline direction of third fitting piece is parallel to each other with the incline direction of first fitting piece, and in the in-process that the cover half moved along the direction of loosing core, the cooperation relation of second block and cover half played the purpose that realizes the cover half and stabilize the motion.
Optionally, the third matching piece is a channel structure arranged on the second block, the fourth matching piece is a guide block arranged on the fixed die plate, or the third matching piece is a guide block arranged on the second block, the fourth matching piece is a channel structure arranged on the fixed die plate, and the guide block is suitable for sliding in the channel structure.
Therefore, the channel structure and the guide block are simple in design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
Optionally, the limiting assembly comprises a pulling plate, one end of the pulling plate is suitable for being connected with the hot runner plate or the fixed die plate, a first limiting part is arranged at the other end of the pulling plate, a second limiting part matched with the first limiting part is arranged on the fixed die plate, and when the first limiting part is connected with the second limiting part, the fixed die and the movable die are separated.
Like this, in the die sinking in-process, when first spacing portion and second spacing portion are connected, the cover half is connected with hot runner board or fixed template, no longer follows the cover half motion this moment, the separation of cover half and movable mould of being convenient for to the product after the shaping is convenient for take out.
Optionally, the first limiting part is of an inverted structure, the second limiting part is of a slide way structure on the fixed die, and the inverted structure is located in the slide way structure.
Therefore, the back-off structure and the slide way are simple in structural design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
Optionally, the limiting component further comprises a base provided with a guide groove, the base is connected with the fixed die, and the pull plate is in sliding connection with the guide groove.
Like this, the base is equipped with the guiding groove, has restricted the displacement in the arm-tie left and right directions, and the motion of arm-tie of being convenient for is stable, simple structure moreover, the production of being convenient for.
Another object of the present invention is to provide an injection mold, so as to solve the problem of how to provide a core pulling mechanism with a simple structure.
In order to solve the problems, the technical scheme of the invention is realized as follows:
an injection mold comprising any one of the core pulling mechanisms described above.
The injection mold and the core pulling mechanism have the same advantages as those of the prior art, and are not described in detail herein.
Optionally, the device further comprises a hot runner plate and a fixed template, wherein the driving piece of the core pulling mechanism and the pulling plate of the limiting component of the core pulling mechanism are connected with the hot runner plate or the fixed template, and the first block body and the second block body of the second guiding structure of the core pulling mechanism are connected with the hot runner plate.
Therefore, the hot runner plate and the fixed die plate are convenient to connect with part of components in the core pulling mechanism, so that normal core pulling of the fixed die and normal separation of the movable die and the fixed die can be realized in the die opening process.
Drawings
FIG. 1 is a schematic view of an injection mold according to an embodiment of the present invention;
FIG. 2 is a schematic view of an injection mold according to an embodiment of the present invention;
FIG. 3 is an assembled schematic view of one implementation of the stationary platen, hot runner platen and stationary platen of an embodiment of the present invention;
FIG. 4 is an assembled schematic view of one implementation of the stationary mold, stationary platen of an embodiment of the present invention;
FIG. 5 is a schematic structural view of an embodiment of a fixed mold insert according to the present invention;
FIG. 6 is a schematic view of another view of a fixed mold insert according to an embodiment of the present invention;
FIG. 7 is a schematic view of a structure of a fixed mold according to an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of one implementation of a compact according to an embodiment of the present invention;
FIG. 9 is an exploded view of a first block of an embodiment of the present invention;
FIG. 10 is an exploded view of a connection assembly according to an embodiment of the present invention;
FIG. 11 is a view showing a state of use of the spacing assembly of the present invention during mold closing;
FIG. 12 is a view showing a state of use of the spacing assembly of the present invention during mold opening;
FIG. 13 is an assembled schematic view of one implementation of a spacing assembly according to an embodiment of the present invention;
Fig. 14 is a schematic view of the structure of an embodiment of the product of the present invention.
Reference numerals illustrate:
100-fixed die, 200-fixed die core, 300-movable die, 400-guide component, 500-connecting component, 600-limit component, 700-hot runner plate, 800-fixed die plate, 900-product, 110-movable die plate, 120-push rod and 130-movable die core;
101-notch, 102-press block structure, 103-slide structure, 201-first slider, 202-second matching piece, 203-fourth matching piece, 401-first block, 402-second block, 403-guide slot structure, 501-first connecting piece, 502-second connecting piece, 503-driving piece, 601-base, 602-back-off structure, 901-deep cavity back-off;
1011-first inclined plane, 1021-second inclined plane, 1022-stopper, 4011-first fitting, 4012-first mounting portion, 4013-second mounting portion, 4021-third fitting, 5011-upper housing, 5012-lower housing, 5013-bump, 5014-elastic member, 5015-adjusting member, 5021-first stopper, 5022-second stopper, 5023-slot structure, 5024-slot structure, 5031-bump, 5032-inclined plane portion.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present invention, it should be noted that directions or positional relationships indicated by terms of "upper", "lower", "left", "right", "front", "rear", etc. are orientation or positional relationships based on the drawings, and coordinate system XYZ is provided herein, in which the forward direction of the X axis represents the right direction, the reverse direction of the X axis represents the left direction, the forward direction of the Y axis represents the rear direction, the reverse direction of the Y axis represents the front direction, the forward direction of the Z axis represents the upper direction, and the reverse direction of the Z axis represents the lower direction, and are merely for convenience of description and simplification of description, and are not intended to indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 14, there is a deep cavity undercut 901 on the right side of the product 900, which is very difficult to mold, and usually requires a core-pulling mechanism to perform side-pulling during demolding. The lateral core pulling is difficult to realize by adopting a general oblique ejection and sliding block lateral core pulling mechanism. Meanwhile, for the back-off, the required lateral core pulling mechanism is large in size due to the large size, the appearance requirement precision is high, the lateral core pulling structure becomes complex, the matching requirement is increased, and the die cost is greatly increased.
As shown in fig. 1 and 2, the embodiment of the invention provides a core pulling mechanism, which comprises a fixed die 100, a fixed die core 200, a movable die 300, a guide assembly 400, a connecting assembly 500 and a limiting assembly 600, wherein the fixed die 100 and the movable die 300 are oppositely arranged, the fixed die core 200 is positioned in the fixed die 100, the connecting assembly 500 comprises a first connecting piece 501 and a second connecting piece 502 which are detachably connected, the first connecting piece 501 is arranged on the fixed die 100, and the second connecting piece 502 is arranged on the movable die 300;
When the first connecting piece 501 is connected with the second connecting piece 502, the movable mold 300 is suitable for moving together with the fixed mold 100 along the mold opening direction in the mold opening process, so that the fixed mold core 200 moves on the guide assembly 400 along the direction intersecting with the mold opening direction;
When the first coupling member 501 is separated from the second coupling member 502, the limit assembly 600 is adapted to separate the stationary mold 100 and the movable mold 300 during the mold opening process.
After the core pulling mechanism of this embodiment is adopted, in the mold opening process, when the first connecting piece 501 is connected with the second connecting piece 502, the movable mold 300 and the fixed mold 100 move together along the mold opening direction, in this process, under the action of the guide assembly 400, the fixed mold core 200 moves along the direction intersecting with the mold opening direction, as shown in the structure of fig. 2, the fixed mold core 200 moves obliquely upwards left, so as to realize the core pulling of the product 900, when the first connecting piece 501 is separated from the second connecting piece 502, the fixed mold 100 continues to move, under the action of the limiting assembly 600, the fixed mold 100 and the movable mold 300 are separated from each other, and after the movable mold 300 moves to a certain distance, the molded product 900 is conveniently taken out, compared with the traditional oblique top core pulling, the structure is simple, the matching requirement is reduced, and the injection mold cost can be greatly reduced.
In this embodiment, the mold opening process may be divided into two stages, in the first stage, the fixed mold 100 and the movable mold 300 move together, the fixed mold core 200 performs core pulling through the guide assembly 400, and in the second stage, the fixed mold 100 and the movable mold 300 are separated until the space therebetween is convenient for taking out the product 900.
In this embodiment, the mold opening direction refers to the direction in which the movable mold 300 moves, which is generally downward, i.e., in the opposite direction along the Z-axis as shown in fig. 1.
Optionally, the first connecting piece 501 comprises an adjusting component 5015 with adjustable length, the second connecting piece 502 is provided with a clamping groove structure 5023, and the adjusting component 5015 is suitable for being inserted into or separated from the clamping groove structure 5023. Because the length of the adjusting component 5015 is adjustable, the adjusting component 5015 can extend into the clamping groove structure 5023 in the extending state to realize the clamping connection of the first connecting piece 501 and the second connecting piece 502, so that the fixed die 100 and the movable die 300 can move together, and the adjusting component 5015 can be separated from the clamping groove structure 5023 in the shortening state to realize the separation of the first connecting piece 501 and the second connecting piece 502, so that the fixed die 100 is not moved along with the movable die 300.
Specifically, as shown in fig. 2, 3, 4 and 10, the first connecting member 501 further includes a fixing seat having a placement groove therein, the fixing seat is connected to the fixed mold 100, the adjusting component 5015 includes an elastic member 5014 and a protruding block 5013, the elastic member 5014 is located in the placement groove, one end of the protruding block 5013 extends into the placement groove and is connected to the elastic member 5014, when the elastic member 5014 is in an extended state, the protruding block 5013 is located in the clamping groove structure 5023, and when the elastic member 5014 is in a contracted state, the protruding block 5013 is separated from the clamping groove structure 5023. Therefore, the fixing seat is used for matching with the telescopic movement of the adjusting component 5015, when the protruding block 5013 of the adjusting component 5015 is extruded, the protruding block 5014 is compressed, so that the position of the protruding block 5013 is changed, the purpose of changing the length of the adjusting component 5015 is achieved, the protruding block 5013 is located in the clamping groove structure 5023 when the elastic component 5014 is in an extending state, and the protruding block 5013 is separated from the clamping groove structure 5023 when the elastic component 5014 is in a shrinking state.
In this embodiment, as shown in fig. 10, the fixing base includes an upper base 5011 and a lower base 5012, a placement groove is disposed between the upper base 5011 and the lower base 5012, and one end of the protruding block 5013 extends into the placement groove and is connected with the elastic member 5014. Specifically, the upper housing 5011 and the lower housing 5012 are respectively provided with a threaded hole, and the fixed mold 100 is provided with a matched through hole or threaded hole, and when the threaded holes of the upper housing 5011 and the lower housing 5012 are aligned with the corresponding through holes or threaded holes of the fixed mold 100, the upper housing 5011 and the lower housing 5012 are fixedly connected by fasteners such as screws.
As shown in fig. 10, one end of the upper housing 5011 facing the lower housing 5012 is provided with a groove structure with two open ends, after the upper housing 5011 and the lower housing 5012 are fixed on the fixed mold 100, the groove structure of the upper housing 5011 and the upper end surface of the lower housing 5012 form a placing groove, in other embodiments, the upper housing 5011 and the lower housing 5012 are provided with groove structures with two open ends, after the upper housing 5011 and the lower housing 5012 are fixed on the fixed mold 100, the groove structures of the upper housing 5011 and the lower housing 5012 form a placing groove, or one end of the lower housing 5012 facing the upper housing 5011 is provided with a groove structure with two open ends, after the upper housing 5011 and the lower housing 5012 are fixed on the fixed mold 100, the groove structures and the upper end surface of the lower housing 5012 form a placing groove.
In this embodiment, the elastic component 5014 is the spring, and the one end that the lug 5013 stretched into the standing groove is equipped with the hole structure, and the one end of spring is fixed in the hole structure, from this, realizes the fixed of spring and lug 5013, simultaneously, in order to be convenient for the stable indentation of lug 5013, the spring can be equipped with a plurality ofly, and specific quantity is according to actual demand and decides.
Optionally, the second connecting piece 502 includes a stopper, the stopper is connected with the movable mold 300, and a side of the stopper facing the first connecting piece 501 is provided with the clamping groove structure 5023. Therefore, the limiting block is connected with the movable mold 300, and a clamping groove structure 5023 is arranged on one side facing the first connecting piece 501, so that the limiting block is convenient to be matched with the first connecting piece 501, and maintenance is convenient.
In this embodiment, as shown in fig. 10, the limiting block includes a first limiting block 5021 and a second limiting block 5022, the first limiting block 5021 is connected with the movable mold 300, the first limiting block 5021 is fixedly disposed above the second limiting block 5022, and the first limiting block 5021 and the second limiting block 5022 form a clamping groove structure 5023 on one side towards the first connecting piece 501.
Optionally, the connection assembly 500 further comprises a driving member 503, wherein the driving member 503 is adapted to drive the bump 5013 out of the card slot structure 5023.
Specifically, the driving member 503 is a pull rod, the pull rod is suitable for being connected with the hot runner plate 700 or the fixed die plate 800, the limiting block is provided with a through groove structure, the through groove structure is communicated with the clamping groove structure 5023, one end of the pull rod passes through the through groove structure and is provided with a protrusion 5031 with an inclined surface portion 5032, and the protrusion 5031 is suitable for driving the protrusion 5013 to be separated from the clamping groove structure 5023 through the inclined surface portion 5032. Therefore, in the mold opening process, the pull rod and the through groove structure are relatively displaced, when the protrusion 5031 of the pull rod is in contact with the protrusion 5013, due to the inclined surface portion 5032 of the protrusion 5031 and the elastic member 5014 connected with the protrusion 5013, the protrusion 5013 moves towards the inside of the fixing seat in the upward movement process of the protrusion 5031, and finally the protrusion 5013 is caused to be separated from the clamping groove structure 5023.
In this embodiment, the first limiting block 5021 and the second limiting block 5022 each include a bottom plate and two side plates. The two side plates are respectively arranged at two opposite ends of the bottom plate, and the bottom plate and the two side plates enclose a through groove structure, so that the structure is simple, the production is convenient, and the weight of the limiting block is reduced.
Optionally, the guiding assembly 400 includes a first guiding structure and a second guiding structure, where the first guiding structure and the second guiding structure are slidably connected to the fixed mold core 200, so as to guide the fixed mold core 200 to move along the core pulling direction.
Specifically, the first guiding structure is a guiding groove structure 403 disposed on the fixed mold 100 and inclined with respect to a horizontal plane, the fixed mold core 200 includes a first slider 201 mated with the guiding groove structure 403, and the first slider 201 is slidably connected with the guiding groove structure 403. Therefore, the guide groove structure 403 and the first slider 201 are arranged, so that the fixed die core 200 can move along the core pulling direction conveniently, and the structure is simple, and the production is convenient.
As shown in fig. 1, the fixed mold core 200 is located inside the fixed mold 100, and is fixed by matching the guide groove structures 403 with the first sliders 201, specifically, a cavity is formed inside the fixed mold 100, two guide groove structures 403 which are communicated with the cavity are respectively arranged on two side walls of the fixed mold 100 in the width direction, two first sliders 201 which are matched with the guide groove structures 403 are respectively arranged on two sides of the fixed mold core 200 in the width direction, and when four first sliders 201 are located in the four guide groove structures 403, the fixed mold core 200 is fixed in the fixed mold 100.
As shown in FIG. 7, a notch 101 is formed in the side wall of the fixed mold 100, a first inclined plane 1011 is formed in the notch 101, a pressing block structure 102 is detachably arranged at the notch 101 of the fixed mold 100, a second inclined plane 1021 is formed in the pressing block structure 102, and a guide groove structure 403 is formed between the first inclined plane 1011 and the second inclined plane 1021 when the pressing block structure 102 is fixed on the fixed mold 100.
As shown in fig. 8, the pressing block structure 102 is provided with a stop 1022 protruding upward from a side of the first ramp 1011 facing the movable mold 300, and the stop 1022 is located at one end of the guide groove structure 403 after the pressing block structure 102 is assembled. Thereby, the first slider 201 is blocked from being separated from the guide groove structure 403.
In the present embodiment, the length of the guide groove structure 403 is longer than the length of the first slider 201 in the section in the length direction of the fixed mold 100, so that the first slider 201 can move in the guide groove structure 403.
Specifically, the second guiding structure comprises a first block 401, one end of the first block 401 is suitable for being connected with the hot runner plate 700, the other end of the first block 401 extends into the fixed mold 100 and is provided with a first matching piece 4011 in an inclined mode relative to the horizontal plane, the fixed mold 100 is provided with a second matching piece 202 matched with the first matching piece 4011, and the first matching piece 4011 and the second matching piece 202 are in sliding connection. In this way, the first fitting 4011 is obliquely disposed on the first block 401, and displacement in the horizontal direction and the vertical direction occurs during sliding due to the sliding connection of the first fitting 4011 and the second fitting 202, thereby making it easier to demold the product 900.
Specifically, the first mating member 4011 is a groove structure provided on the first block 401, the second mating member 202 is a boss structure provided on a side end of the fixed platen 800, or the first mating member 4011 is a boss structure provided on the first block 401, and the second mating member 202 is a groove structure provided on a side end of the fixed platen 800, the boss structure being adapted to slide within the groove structure. Therefore, the groove structure and the boss structure are simple in design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
As shown in fig. 3, 5, 6 and 9, the first mating member 4011 is a boss structure disposed on the first block 401, the second mating member 202 is a slot structure disposed on a side end of the fixed platen 800, and for facilitating stable mating of the two, the boss structure is a T-shaped block, and the slot structure is a T-shaped slot. During the mold opening movement, the first slider 201 moves upward and rightward along the guide groove structure 403, and the groove structure on the side end of the fixed mold plate 800 moves downward and leftward along the boss structure, thereby realizing core pulling of the fixed mold core 200.
When the first fitting 4011 on the first block 401 is of a boss structure, the first fitting 4011 and the boss structure can be integrally formed or can be of a detachable structure, as shown in fig. 9, the boss structure is a single body, a first mounting portion 4012 is arranged on the boss structure, a second mounting portion 4013 inclined relative to a horizontal plane is arranged on the first block 401, the first mounting portion 4012 is connected with the second mounting portion 4013, the first mounting portion 4012 and the second mounting portion 4013 are respectively a slot and an insert, and therefore replacement can be performed after the boss structure is worn.
Optionally, the second guiding structure further includes a second block 402, one end of the second block 402 is adapted to be connected to the hot runner plate 700, the other end is inclined with respect to a horizontal plane and is provided with a third mating member 4021, an inclination direction of the third mating member 4021 is parallel to an inclination direction of the first mating member 4011, the fixed mold 100 is provided with a fourth mating member 203 mated with the third mating member 4021, and the third mating member 4021 and the fourth mating member 203 are slidingly connected. Therefore, the third fitting member 4021 is obliquely arranged on the second block 402, and the oblique direction of the third fitting member 4021 is parallel to the oblique direction of the first fitting member 4011, so that the purpose of realizing the stable movement of the fixed mold 100 is achieved by the matching relationship between the second block 402 and the fixed mold 100 in the process of moving the fixed mold 100 in the core pulling direction.
Specifically, the third fitting 4021 is a channel structure provided on the second block 402, the fourth fitting 203 is a guide block provided on the fixed platen 800, or the third fitting 4021 is a guide block provided on the second block 402, the fourth fitting 203 is a channel structure provided on the fixed platen 800, and the guide block is adapted to slide in the channel structure. Therefore, the channel structure and the guide block are simple in design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
As shown in fig. 3, the guide block is a square guide post, so that the channel structure is a matched square, and the square is positioned on two symmetrical directions, so that good matching precision can be realized.
Alternatively, the limiting assembly 600 includes a pulling plate, one end of the pulling plate is adapted to be connected with the hot runner plate 700 or the fixed mold plate 800, the other end of the pulling plate is provided with a first limiting portion, the fixed mold plate 800 is provided with a second limiting portion matched with the first limiting portion, and when the first limiting portion is connected with the second limiting portion, the fixed mold 100 and the movable mold 300 are separated. Therefore, in the mold opening process, when the first limiting part and the second limiting part are connected, the fixed mold 100 is connected with the hot runner plate 700 or the fixed mold plate 800, and the fixed mold 100 is not moved, so that the fixed mold 100 and the movable mold 300 are separated conveniently, and the molded product 900 is taken out conveniently.
Specifically, as shown in fig. 13, the first limiting portion is an inverted buckle structure 602, the second limiting portion is a slide structure 103 on the fixed mold 100, and the inverted buckle structure 602 is located in the slide structure 103. Therefore, the back-off structure 602 and the slide way structure 103 are simple in design, convenient to manufacture and high in universality, and the structure of the core pulling mechanism is simpler, so that the manufacturing cost is reduced.
Optionally, as shown in fig. 13, the limiting assembly 600 further includes a base 601 provided with a guide groove, the base 601 is connected to the fixed mold 100, and the tie plate is slidably connected to the guide groove. Therefore, the base 601 is provided with the guide groove, so that the displacement of the pulling plate in the left-right direction is limited, the pulling plate is convenient to move stably, and the structure is simple and the production is convenient.
The embodiment of the invention also provides an injection mold, which comprises any core pulling mechanism.
With the injection mold of the embodiment, when the first connecting piece 501 is connected with the second connecting piece 502 in the mold opening process, the movable mold 300 and the fixed mold 100 move together along the mold opening direction, and in this process, under the action of the guide assembly 400, the fixed mold core 200 moves along the sliding direction intersecting with the mold opening direction, so as to realize core pulling of the product 900; when the first connecting piece 501 is separated from the second connecting piece 502, the fixed die 100 continues to move, under the action of the limiting assembly 600, the fixed die 100 and the movable die 300 are separated from each other, and the movable die 300 runs to a certain distance to facilitate taking out the molded product 900.
Optionally, the injection mold further includes a hot runner plate 700 and a fixed mold plate 800, and the driving member 503 of the core pulling mechanism and the pulling plate of the limiting assembly 600 of the core pulling mechanism are connected to the hot runner plate 700 or the fixed mold plate 800. The first block 401 and the second block 402 of the second guide structure of the core pulling mechanism are connected to the hot runner plate 700. Thus, the hot runner plate 700 and the fixed mold plate 800 are convenient to connect with part of components in the core-pulling mechanism, so that normal core pulling of the fixed mold 100 and normal separation of the movable mold 300 and the fixed mold 100 can be realized in the mold opening process.
Optionally, as shown in fig. 1, the injection mold further includes a movable mold plate 110, and the movable mold plate 110 is connected with the movable mold 300 through a push rod 120, so that the push rod 120 can lift and lower the movable mold 300 under the action of a power assembly such as a hydraulic cylinder.
Optionally, as shown in fig. 1, the injection mold further includes a movable mold core 130, where the movable mold core 130 is fixed on the upper portion of the movable mold 300, and a product 900 is formed between the movable mold core 130 and the fixed mold core 200, so that the movable mold core 130 and the fixed mold core 200 cooperate to realize core pulling of the product 900.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (13)
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| ATE205773T1 (en) * | 1995-03-31 | 2001-10-15 | Cattini S R L | METHOD FOR PRODUCING CLOSED WHEELS AND A DEVICE THEREFOR |
| US7381051B2 (en) * | 2006-01-24 | 2008-06-03 | Cheng Uei Precision Industry Co., Ltd. | Core-pulling mechanism and injection mold with the same |
| CN104354274B (en) * | 2014-10-31 | 2017-02-01 | 江苏师范大学 | Injection mould for upper housing of car air filter |
| CN106584770A (en) * | 2015-10-15 | 2017-04-26 | 南通精华动力科技有限公司 | High-efficiency plastic die and use method thereof |
| CN210308838U (en) * | 2019-07-04 | 2020-04-14 | 宁波奥克斯电气股份有限公司 | Lateral core-pulling mechanism and injection mold |
| CN110303648B (en) * | 2019-08-19 | 2024-05-10 | 宁波奥克斯电气股份有限公司 | Combined two-way side-drawing mechanism and injection mold |
| CN111070575A (en) * | 2019-12-27 | 2020-04-28 | 宁波奥克斯电气股份有限公司 | Core-pulling forming mechanism and mold |
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Country or region after: China Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant after: NINGBO AUX ELECTRIC Co.,Ltd. Applicant after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant before: NINGBO AUX ELECTRIC Co.,Ltd. Country or region before: China Applicant before: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. |
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