CN213890989U - Quick interchange structure on plastic mold insert machine - Google Patents

Abstract

The utility model relates to the technical field of dies, in particular to a quick exchange structure on a plastic die insert machine, which comprises a fixed die plate, an insert part arranged on the bottom surface of the fixed die plate and a connecting part; the fixed die plate is provided with the first through-hole that runs through, the mold insert portion includes that the main mold insert of movable cover half and symmetry activity set up the interchange mold insert in the main mold insert bottom surface of movable cover half, the main mold insert of movable cover half is provided with the second through-hole corresponding with first through-hole position, connecting portion include multiunit coupling mechanism, every coupling mechanism of group includes the screw rod, slide and set up the slider at fixed die plate top surface, the fixed locking piece that is provided with of one end of slider, locking piece and slider joint are passed through to the one end of screw rod, the other end passes first through-hole and second through-hole and exchanges mold insert fixed connection, the axis of screw. The utility model discloses a screw rod link block with exchange the mold insert, the vertical motion of horizontal migration slider driving screw to ejecting exchange the mold insert.

Description

Quick interchange structure on plastic mold insert machine

Technical Field

The utility model relates to the technical field of mold, more specifically relate to a quick exchange structure on plastic die inserts machine.

Background

As the technology of plastic molds becomes more mature, the mold structure becomes more complex and precise, and the assembly precision becomes a difficult problem restricting the mold from advancing continuously. Meanwhile, in order to further save cost, product developers often keep the consistency of the main structure of the product when designing the product, and change the local shape to meet the change requirement, which poses a challenge to the quick replacement and assembly precision of the mold parts.

To address the above challenges and ensure the precision of mold assembly, on-machine rapid mold insert replacement techniques have been developed. According to the product developer money changing requirement, a product local money changing insert is designed, and the product local money changing insert is changed on the injection molding machine without unloading a mold by relying on a quick exchange structure. The conventional mode of changing the mold is that the mold needs to be disassembled by a crane from an injection molding machine, the whole set of mold is disassembled for exchange, and then the mold is installed on the machine. During this period, a great deal of time is wasted in disassembling and assembling the mold and the mold loader and unloader, and sometimes more than ten hours or even more than one day is required.

In order to solve the technical problem, chinese patent CN206579082U discloses a structure for easily replacing an insert of a large mold, wherein a first cavity side interchangeable insert is located at the ground side of the mold, and when the interchangeable insert is replaced, a first auxiliary guide rod and a second auxiliary guide rod are inserted, so that the first interchangeable insert and a T-shaped guide rail fixed to the first interchangeable insert can be manually moved along a T-shaped guide rail groove, and the first interchangeable insert is lifted out from the top side of the mold by sliding a certain distance; and (4) hanging the second interchangeable insert, so that the positioning groove of the second interchangeable insert, the first auxiliary guide rod and the second auxiliary guide rod are positioned, the T-shaped guide rail fixed with the second interchangeable insert moves along the T-shaped guide rail groove, and the second interchangeable insert is locked and fixed in the mold. The insert is moved in a guide rail and guide rail groove mode, but the insert can be moved only by detaching the wedging block I and the wedging block II, and the arrangement and fastening are not reliable enough, the dismounting difficulty is high, the positioning is not accurate, and the assembly precision of other parts can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned prior art change mold insert structure unreliable, the dismouting degree of difficulty is big, the location is not accurate not enough, provide a quick interchange structure on the simple, the fastening of dismouting is reliable, the high plastic mold of positioning accuracy inserts the machine.

In the technical scheme, the rapid interchanging structure on the plastic die insert machine is provided, and comprises a fixed die plate, an insert part arranged on the bottom surface of the fixed die plate and a connecting part; the fixed die plate is provided with the first through-hole that runs through, the mold insert portion includes that the main mold insert of movable cover half and symmetry activity set up the interchange mold insert in the main mold insert bottom surface of movable cover half, the main mold insert of movable cover half is provided with the second through-hole corresponding with first through-hole position, connecting portion include multiunit coupling mechanism, every coupling mechanism of group includes the screw rod, slide and set up the slider at fixed die plate top surface, the fixed locking piece that is provided with of one end of slider, locking piece and slider joint are passed through to the one end of screw rod, the other end passes first through-hole and second through-hole and exchanges mold insert fixed connection, the axis of screw rod is perpendicular with the axis of slider.

The utility model drives the screw rod to move in the vertical direction through the screw rod connecting slide block and the interchange insert by the horizontal moving slide block, thereby driving the interchange insert fixedly connected with the screw rod to move vertically, ejecting the interchange insert from the main insert of the driven fixed die, and completing the quick replacement of the die on the machine; in addition, a locking piece movably clamped with the screw rod is arranged on the sliding block, and when the interchangeable insert is assembled, the screw rod is clamped on the locking piece in a self-locking manner and fastened, so that the interchangeable insert fixedly connected with the screw rod is positioned; when the insert is disassembled and exchanged, the screw rod is separated from the locking piece, and meanwhile, the exchange insert fixedly connected with the screw rod is also separated from the bottom of the main insert of the driven fixed die, so that the disassembly is completed, the connection is reliable, and the disassembly and the assembly are simple.

As a further improved structural form, one end, close to the screw rod, of the sliding block is provided with a mounting cavity, the other end of the sliding block is provided with a first threaded hole connected with an external mechanism, and the locking piece is arranged in the mounting cavity. The arrangement is that the screw rod is locked and fastened in the mounting cavity of the sliding block through the locking piece, and the screw rod does not need to be fastened by a screw, so that the assembling and disassembling steps of the interchangeable insert are simplified, and meanwhile, the mounting precision can also be improved; meanwhile, the other end of the sliding block is provided with a first threaded hole, and when the insert is exchanged, an oil cylinder or other tools with a threaded rod matched with the oil cylinder or other tools are used for being fixedly connected with the sliding block to apply force to the sliding block so as to drive the sliding block to move.

As a further improved structure, the locking piece comprises a U-shaped block, a first inclined block, a second inclined block and a limiting block, wherein the U-shaped block, the first inclined block, the second inclined block and the limiting block are arranged on the inner wall of the installation cavity, the U-shaped rod is clamped with the screw rod, the first inclined block and the second inclined block are fixedly connected with two sides of an opening of the U-shaped block respectively, and the limiting block is fixedly arranged above the closed opening of the U-shaped block and is in contact with the screw rod. When the installation of exchanging the mold insert, the slider atress carries out the horizontal direction motion in-process, and the screw rod contacts first sloping piece and second sloping piece earlier, and the closing end of U type piece slides to stops after the screw rod upper end contacts the stopper, and the screw rod chucking is on the locking piece, with slider fixed connection.

As a further improved structure form, the opposite surfaces of the first inclined block and the second inclined block are respectively provided with a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are close to one end connected with the U-shaped block. The setting is in order to let the screw rod cunning to the in-process of U type piece closing end like this, and the pressure that receives increases gradually to the U type piece is gone into to final card, avoids U type piece and the direct joint of screw rod to take place to pause to hinder and strike, causes the injury to screw rod or slider, appears cracked risk.

As a further improved structure form, one surfaces of the first inclined block and the second inclined block, which are far away from the U-shaped block, are respectively provided with a first transition arc surface and a second transition arc surface. So that the contact between the screw rod and the first sloping block and the second sloping block can be smoothly and smoothly transited.

As a further improved structural form, the mounting cavity is provided with a third inclined surface movably connected with the screw rod. When the interchangeable insert is replaced and disassembled, the third inclined surface contacts the screw rod and applies downward force to the screw rod in the horizontal movement process of the stressed slide block, so that the insert connected with the screw rod is driven to move downwards through the screw rod, and the interchangeable insert is disassembled.

As a further improved structure form, the screw rod is a screw rod with a hemispherical head at one end, a connecting clamping column with the radius smaller than that of the screw rod and the hemispherical head is arranged below the hemispherical head, the screw rod is movably connected with the locking piece through the hemispherical head, a second thread structure is arranged at the other end of the screw rod, and the screw rod is connected with the interchange insert through the second thread structure. The screw can be automatically locked and fastened on the locking piece in the installation process through the hemispherical head and the connecting clamping column without being fastened through a screw, so that the installation procedure is simplified; in addition, the other end of the screw is fixedly connected with the interchangeable insert through a thread structure, so that the slide block can drive the interchangeable insert to move through the screw or install and position the interchangeable insert through the screw.

As a further improved structure form, one end of the second thread structure, which is far away from the interchange insert, is sleeved with a spring gasket. The arrangement is to increase the pretightening force of the screw and the interchangeable insert, and prevent the situation that the screw is not connected with the second insert tightly due to vibration generated in the multiple replacing process, so that the positioning precision of the interchangeable insert is influenced.

As a further improved structural form, the height of the U-shaped block is equal to that of the connecting clamping column. The U-shaped block is arranged in such a way that the connecting clamp column can be wrapped, so that the connecting clamp column is embedded into the U-shaped block, the locking effect is better and more reliable, and the overall positioning precision of die installation is improved.

As a further improved structure form, the screw rod is in sliding fit with the main insert of the movable mold and the fixed mold plate. The distance between the outer wall of the screw rod and the inner walls of the movable and fixed die main insert and the fixed die plate is 0.01-0.03 mm, the screw rod is in contact friction with the movable and fixed die main insert and the fixed die plate, resistance is caused to the up-and-down movement of the screw rod, and the replacement difficulty of the interchangeable insert is increased.

Compared with the prior art, the beneficial effects are:

the utility model discloses a set up coupling mechanism, the screw rod link block in the coupling mechanism and exchange the mold insert, drive the screw rod through the horizontal migration slider and carry out the motion of vertical direction to the drive exchanges the mold insert vertical motion with screw rod fixed connection, will exchange the mold insert and ejecting from the driven cover half main mold insert, accomplish the quick replacement on the machine of mould; in addition, the locking piece movably clamped with the screw rod is arranged on the sliding block, when the interchangeable insert is assembled, the screw rod is clamped on the locking piece in a self-locking manner and fastened, when the interchangeable insert is disassembled, the screw rod is separated from the locking piece, and the disassembly and the assembly are simple.

Drawings

FIG. 1 is a schematic view of an overall structure of a quick-change structure of a plastic die insert machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection portion of a quick-change structure of a plastic die insert machine according to an embodiment of the present invention;

FIG. 3 is a schematic view of a slider structure of a quick-change structure on a plastic die insert machine according to an embodiment of the present invention;

FIG. 4 is a schematic view of a screw structure of a quick exchange structure on a plastic die insert machine according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a locking member of a quick-change structure of a plastic die insert machine according to an embodiment of the present invention;

fig. 6 is a schematic view of an insert part structure of a rapid exchange structure on a plastic die insert machine according to the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

examples

Fig. 1 to 6 show an embodiment of a quick interchanging structure of a plastic die insert machine, which includes a fixed die plate 1, an insert part disposed on a bottom surface of the fixed die plate 1, and a connecting part; the fixed die plate 1 is provided with the first through-hole 11 that runs through, the mold insert portion includes that the main mold insert 2 of movable cover half and symmetry activity set up the interchange mold insert 3 in the main mold insert 2 bottom surface of movable cover half, the main mold insert 2 of movable cover half is provided with the second through-hole 21 corresponding with first through-hole 11 position, connecting portion include multiunit coupling mechanism, every coupling mechanism of group includes screw rod 4, slide and set up slider 5 at the 1 top surface of fixed die plate, the fixed locking piece 6 that is provided with of one end of slider 5, the joint of locking piece 6 and slider 5 is passed through to the one end of screw rod 4, the other end of screw rod 4 passes first through-hole 11 and second through-hole 21 and exchanges 3 fixed connection of mold insert, the axis of screw rod 4 is perpendicular with the axis of slider 5.

In the embodiment, the screw 4 is connected with the sliding block 5 and the interchangeable insert 3, the screw 4 is driven to move in the vertical direction by horizontally moving the sliding block 5, so that the interchangeable insert 3 fixedly connected with the screw 4 is driven to move vertically, the interchangeable insert 3 is ejected out of the main insert 2 of the driven fixed die, and the on-machine quick replacement of the die is completed; in addition, the slide block 5 is provided with a locking piece 6 movably clamped with the screw rod 4, when the interchangeable insert 3 is assembled, the screw rod 4 is clamped on the locking piece 6 for self-locking and fastening, so that the interchangeable insert 3 fixedly connected with the screw rod 4 is positioned; when the interchangeable insert 3 is disassembled, the screw rod 4 is separated from the locking piece 6, and meanwhile, the interchangeable insert fixedly connected with the screw rod 4 is also separated from the bottom of the main insert 2 of the driven fixed die, so that the arrangement and the connection are reliable, and the disassembly and the assembly are simple.

As shown in fig. 3, the slider 5 in this embodiment is provided with a mounting cavity 51 at one end near the screw 4, a first threaded hole 52 at the other end, and the locking member 6 is disposed in the mounting cavity 51. The arrangement is that the screw rod 4 is locked and fastened in the mounting cavity 51 of the sliding block 5 through the locking piece 6, and a screw is not needed for fastening, so that the assembling and disassembling steps of the interchangeable insert 3 are simplified, and the mounting precision can be improved; meanwhile, the other end of the slide block 5 is provided with a first threaded hole 52, and when the interchangeable insert 3 is disassembled and assembled, the oil cylinder or other tools with threaded rods matched with the oil cylinder or other tools are fixedly connected with the slide block 5 to apply force to the slide block 5 to drive the slide block 5 to move. It should be noted that in the present embodiment, the first threaded hole 52 is provided at the other end of the slider 5 in order to connect the slider 5 to an external driving device and to receive a force from the external driving device to perform a horizontal movement, and the provision of the threaded structure is only one preferable embodiment, and it is needless to say that other structures may be adopted to connect to the external driving device.

As shown in fig. 3 and 5, the locking member 6 in this embodiment includes a U-shaped block 61, a first oblique block 62, a second oblique block 63, and a limiting block 64, which are disposed on an inner wall of the mounting cavity 51, the U-shaped block 61 is clamped with the screw rod 4, the first oblique block 62 and the second oblique block 63 are respectively fixedly connected with two sides of an opening of the U-shaped block 61, and the limiting block 64 is fixedly disposed above a closed opening of the U-shaped block 61 and contacts with the screw rod 4. When the interchangeable insert 3 is mounted, the slider 5 is stressed to move in the horizontal direction, the screw rod 4 firstly contacts the first inclined block 62 and the second inclined block 63 and slides to the closed end of the U-shaped block 61 until the upper end of the screw rod 4 contacts the limiting block 64, and the screw rod 4 is tightly clamped on the locking piece 6 and is fixedly connected with the slider 5.

As shown in fig. 5, the facing surfaces of the first and second blocks 62 and 63 in this embodiment are respectively provided with a first slope surface 621 and a second slope surface 631, and the first slope surface 621 and the second slope surface 631 are adjacent to each other at the end connected to the U-shaped block. The setting is so that in the process that the screw rod 4 slides to the closed end of the U-shaped block 61, the received pressure is gradually increased, and finally the U-shaped block 61 is clamped in, so that the U-shaped block 61 and the screw rod 4 are prevented from being directly clamped to generate pause and contusion impact, the screw rod 4 or the sliding block 5 is prevented from being injured, and the risk of fracture is caused.

The first oblique block 62 and the second oblique block 63 in this embodiment are respectively provided with a first transition arc surface 622 and a second transition arc surface 632 on the surfaces thereof facing away from the U-shaped block 61. So that the contact between the screw rod 4 and the first sloping block 62 and the second sloping block 63 can smoothly and smoothly transit.

The mounting cavity 51 in this embodiment is provided with a third inclined surface 511 movably connected with the screw 4. When the interchangeable insert 3 is replaced and disassembled, the third inclined surface 511 contacts the screw rod 4 and applies a downward force to the screw rod 4 in the horizontal movement process of the slide block 5 under the stress, so that the insert connected with the screw rod 4 is driven by the screw rod 4 to move downwards, and the interchangeable insert 3 is disassembled.

As shown in fig. 4, the screw rod 4 in this embodiment is a screw rod 4 with a hemispherical head 41 at one end, a connecting clamping column 42 with a radius smaller than that of the screw rod 4 and the hemispherical head 41 is arranged below the hemispherical head 41, the screw rod 4 is movably connected with the locking member 6 through the hemispherical head 41, a second thread structure 43 is arranged at the other end of the screw rod 4, and the screw rod 4 is connected with the interchangeable insert 3 through the second thread structure 43. The screw rod 4 can be automatically locked and fastened on the locking piece 6 in the installation process through the hemispherical head 41 and the connecting clamping column 42, and the screw rod is not required to be fastened through a screw, so that the installation procedure is simplified; in addition, the other end of the screw 4 is fixedly connected with the interchangeable insert 3 through a thread structure, so that the slide block 5 can drive the interchangeable insert 3 to move through the screw 4 or install and position the interchangeable insert 3 through the screw 4. It should be noted that the screw 4 with the hemispherical head 41 is only a preferred solution in the present embodiment, and the hemispherical head 41 is used for being clamped with the locking member 6, and of course, other types of screws 4, such as rolling bearing type screws 4, may be used, and all have the same technical effect.

The end of the second thread structure 43 remote from the interchangeable insert 3 in this embodiment is sleeved with a spring washer 432. The arrangement is to increase the pretightening force of the screw rod 4 and the interchangeable insert 3, and prevent the situation that the screw rod 4 and the second insert are not connected tightly due to vibration generated in the multiple replacing process, so that the positioning precision of the interchangeable insert 3 is influenced.

The height of the U-shaped block 61 in this embodiment is equal to the height of the connecting clip 42. The U-shaped block 61 can wrap the connecting clamp column 42, so that the locking effect is better and more reliable, and the overall positioning precision of die installation is improved.

The screw 4 in the embodiment is in sliding fit with the movable and fixed die main insert 2 and the fixed die plate 1. The distance between the outer wall of the screw rod 4 and the inner walls of the movable and fixed die main insert 2 and the fixed die plate 1 is 0.01-0.03 mm, the screw rod 4 is in contact friction with the movable and fixed die main insert 2 and the fixed die plate 1, resistance is caused to the up-and-down movement of the screw rod 4, and the replacement difficulty of the interchangeable insert 3 is increased.

Referring to fig. 1 and 2, the assembly process of the interchangeable insert will be described with respect to a left set of connection mechanisms:

when the interchangeable insert 3 is assembled, the external driving device is connected with the first threaded hole 52, a rightward force is applied to the slider 5, the slider 5 moves rightward, the mold is inserted into the mold to move, the connecting clamping column 42 of the screw rod 4 is sequentially contacted with the first transition arc surface 622, the second transition arc surface 632, the first inclined block 62 and the second inclined block 63, until the limiting block 64 is contacted with the hemispherical head 41, the external force is removed, the slider stops moving, and the connecting clamping column is clamped into the U-shaped block to be locked, so that the assembly is completed.

When the interchangeable insert 3 is disassembled, the interchangeable insert 3 is connected with the first threaded hole 52 through an external driving device, a leftward force is applied to the slide block 5, the slide block 5 moves leftward, in the process, the third inclined surface 511 contacts the hemispherical head 41 and applies a downward force to the hemispherical head 41, and therefore the interchangeable insert 3 is pushed out through the screw rod 4, and the disassembly is completed.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A quick exchange structure on a plastic die insert machine is characterized by comprising a fixed die plate (1), an insert part arranged on the bottom surface of the fixed die plate (1) and a connecting part; the fixed die plate (1) is provided with a first through hole (11) which penetrates through the fixed die plate, the insert part comprises a movable and fixed die main insert (2) and interchangeable inserts (3) which are symmetrically and movably arranged on the bottom surface of the movable and fixed die main insert (2), the main insert (2) of the movable and fixed die is provided with a second through hole (21) corresponding to the first through hole (11), the connecting part comprises a plurality of groups of connecting mechanisms, each group of connecting mechanisms comprises a screw rod (4) and a sliding block (5) which is arranged on the top surface of the fixed die plate (1) in a sliding way, one end of the sliding block (5) is fixedly provided with a locking piece (6), one end of the screw rod (4) is clamped with the sliding block (5) through the locking piece (6), the other end of the screw rod passes through the first through hole (11) and the second through hole (21) to be fixedly connected with the interchange insert (3), the axis of the screw rod (4) is vertical to the axis of the sliding block (5).

2. A plastic die insert on-machine quick-swap structure according to claim 1, wherein the slider (5) has a mounting cavity (51) at one end near the screw (4) and a first threaded hole (52) at the other end for connection with an external mechanism, and the locking member (6) is disposed in the mounting cavity (51).

3. The quick exchange structure on the plastic die insert machine as claimed in claim 2, wherein the locking member (6) comprises a U-shaped block (61), a first oblique block (62), a second oblique block (63) and a limiting block (64) which are arranged on the inner wall of the mounting cavity (51), the U-shaped block (61) is clamped with the screw rod (4), the first oblique block (62) and the second oblique block (63) are respectively fixedly connected with two open sides of the U-shaped block (61), and the limiting block (64) is fixedly arranged above the closed opening of the U-shaped block (61) and is in contact with the screw rod (4).

4. A plastic die insert on-machine quick-swap structure according to claim 3, wherein the opposing faces of the first and second swash blocks (62, 63) are provided with a first slope (621) and a second slope (631), respectively, the first slope (621) and the second slope (631) being adjacent to each other at the end connected to the U-shaped block (61).

5. The on-machine quick-interchange structure for plastic mold inserts as recited in claim 4, wherein the faces of said first and second swash blocks (62, 63) facing away from said U-shaped block (61) are provided with first and second transition curved faces (622, 632), respectively.

6. A plastic die insert on-machine quick-swap structure according to claim 2, wherein the mounting cavity (51) is provided with a third ramp (511) that is movably connected to the screw (4).

7. The quick interchanging structure on a plastic die insert machine according to claim 3, wherein a hemispherical head (41) is arranged at one end of the screw rod (4), a connecting clamping column (42) with a radius smaller than that of the screw rod (4) and the hemispherical head (41) is arranged below the hemispherical head (41), the screw rod (4) is movably connected with the locking member (6) through the hemispherical head (41), a second thread structure (43) is arranged at the other end of the screw rod (4), and the screw rod (4) is connected with the interchanging insert (3) through the second thread structure (43).

8. A plastic die insert quick swap structure on machine according to claim 7, wherein an end of the second thread structure (43) distal to the swap insert (3) is sleeved with a spring washer (432).

9. A plastic die insert on-machine quick-swap structure according to claim 7, wherein the height of the U-shaped block (61) is equal to the height of the attachment clip (42).

10. The on-machine quick-interchange structure for plastic mold inserts as defined in claim 1, wherein said screw (4) is slidably engaged with said moving and stationary mold main insert (2) and said stationary mold plate (1).

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