CN104608330B - Use the quadric injection mould mould of a cavity per mould mode - Google Patents

Abstract

The invention discloses a secondary injection mold adopting the mode of one mold and one cavity, including a fixed mold group for finished products, a fixed mold group for semi-finished products, and at least one movable mold group with a movable mold core fixedly installed on the top surface, a fixed mold group for finished products and a fixed mold for semi-finished products The groups are fixed side by side, and the moving die set is fixedly installed on the turntable of the injection molding machine. The moving die set is combined with the upper and lower clamping molds of the semi-finished fixed die set to form a semi-finished product mold. The semi-finished product used for the hard rubber main part of the injection molding product is formed in the semi-finished product mold. Cavity; the turntable of the injection molding machine drives the moving mold core to retain the semi-finished product on the plane and rotates 180 degrees to form the finished mold. The finished mold is formed with a secondary injection molded semi-finished product. The second overmolding completes the finished overmolding cavity of the finished product injection molding, and the moving module is equipped with a top stick sliding hole for using the top stick of the injection molding machine to eject the product.

Description

Secondary injection mold with one mold and one cavity

technical field

The invention relates to the structural design technology of injection molds, in particular to the design of a rubber-coated injection mold, specifically a secondary injection mold adopting the mode of one mold and one cavity.

Background technique

For a long time, due to the constraints of cost and equipment, the production process of rubber-coated products in China is usually completed by secondary injection molding, that is, firstly, the main part of the product is injection-molded into a semi-finished product with hard rubber. Then take out the formed semi-finished product and put it on the finished product mold for secondary overmolding to form finished products with different colors of soft and hard rubber. The degree of automation of this production process is relatively low, and it takes up a lot of human resources and the production speed is slow, which leads to high manufacturing costs and long production cycles, which seriously affect the economic benefits of enterprises. Especially in the production process of the secondary overmolding injection molding products, there are special requirements for the placement of the main product, otherwise, it is easy to crush or have indentations on the surface of the product during the secondary injection molding, and even the mold type will be damaged. The cavity is crushed, resulting in poor product quality and short mold life. With the development of modern production technology and the increasing pressure of market competition, enterprises pay great attention to product quality and production capacity, and begin to focus on the production process of secondary overmolding two-color mold, but due to the lack of experience in this area, There is no good structural optimization for the two-color mold, and there is no good advantage to play. Therefore, the study of the structure of the two-color mold is of great significance for improving the competitiveness of enterprises.

Contents of the invention

The technical problem to be solved by the present invention is to provide a secondary injection mold with reasonable layout, high production efficiency and good product molding quality, which adopts one mold and one cavity mode in view of the above-mentioned current situation of the prior art.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a secondary injection mold with one mold and one cavity, including a fixed mold set for finished products, a fixed mold set for semi-finished products, and at least one movable mold set with a movable mold core fixedly installed on the top surface , the finished fixed mold set and the semi-finished fixed mold set are fixed side by side, and the movable mold set is fixedly installed on the turntable of the injection molding machine. The movable mold set is combined with the semi-finished fixed mold set to form a semi-finished mold. The semi-finished cavity of the semi-finished product of the hard rubber main part of the injection molding product; the rotary table of the injection molding machine drives the moving mold core with the semi-finished product on the core to rotate 180 degrees in the plane and is combined with the upper and lower molds of the finished fixed mold group to form a finished mold, which is formed in the finished mold. There is a finished rubber-coated cavity for the secondary plastic-coated injection molding of the semi-finished product formed by one-time injection molding to complete the injection molding of the entire product. The moving module is equipped with a top rod slide hole for ejecting the product by using the top rod of the injection molding machine.

In order to optimize the above technical solutions, the measures taken also include:

The above-mentioned finished fixed mold group includes the finished fixed mold pressing plate, finished nozzle plate, finished A plate and finished Huff slider which are fixedly assembled up and down; The finished Huff assembly cavity with a lower opening and a tapered slope on the front and rear inner walls. The finished Huff slider can slide up and down and is installed in the finished Huff assembly cavity. The finished Huff slider is slidingly equipped with a finished small slider , The finished product shovel machine is fixedly installed on the finished product fixed mold pressing plate to push the finished product small slide block to slide horizontally and pull the core through the finished product nozzle plate and the finished product A plate.

The center of the above-mentioned finished product A plate is provided with a finished fixed mold core extending into the top of the finished Haff assembly cavity, and the finished fixed mold core is provided with a finished injection gate; the finished fixed mold core, the finished Huff slider and the finished product The small slider and the semi-finished product retained on the moving model core are matched to form an overmolding space for encapsulating the overmolding area of the semi-finished product. The overmolding injection space is composed of two areas for secondary encapsulation of the switch area and the handle area of the semi-finished product. The switch overmolding space and the handle overmolding space are composed of plastic injection molding, and the overmolding injection space constitutes the overmolding cavity of the finished product.

The above-mentioned semi-finished fixed mold group includes semi-finished fixed mold pressing plate and semi-finished nozzle plate, semi-finished A plate and semi-finished half-finished slider; semi-finished A plate and semi-finished nozzle plate can be separated from top to bottom, and the semi-finished A plate is made of A semi-finished half-finished half-finished assembly cavity with a lower opening and a tapered slope on the front and rear inner walls. The semi-finished half-finished half-finished slide block can slide up and down in the semi-finished half-finished half-finished assembly cavity. The semi-finished half-finished slide is equipped with a semi-finished small slide , and the semi-finished half-finished half-finished slider is embedded with half-finished inserts, and the semi-finished fixed mold pressing plate is fixedly installed with a semi-finished shovel that passes through the semi-finished nozzle plate and the semi-finished A plate to push the semi-finished small slider to slide horizontally and pull the core.

The center of the above-mentioned semi-finished A plate is provided with a semi-finished fixed mold core extending into the top of the semi-finished Huff assembly cavity, and the semi-finished fixed mold core is provided with a semi-finished injection molding gate; The space formed by matching the insert insert block, the semi-finished small slide block and the moving mold core constitutes the semi-finished cavity of the injection-molded semi-finished product.

The above-mentioned finished half-finished slider is composed of front and rear finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half Composition; T-shaped slideways are made on the front finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half. The half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished product is installed on the moving mold when the mold is opened. The Huff slider hook that keeps the semi-finished product on the moving model core.

The above-mentioned movable mold group includes fixedly assembled movable mold pressing plate and C plate, and B plate which is located on C plate and can also be used as a push plate. The lower part of the moving mold core is firmly positioned by the moving mold pressing plate and C plate. The part of the inner cavity of the molded product slides through the B plate, the hook of the Huff slider is fixedly installed on the C plate, and the movable mold plate is fixedly matched with the turntable of the injection molding machine.

The above-mentioned dynamic model core is equipped with a rubber-sealed slanted top for the inner side of the molded product switch area, and the C-plate is slidably provided with a slanted-top pull block that drives the rubber-sealed slanted top to complete the core-pulling movement of the slanted top. There is a cooling well connected to the inside of the moving mold core to speed up the cooling of the product. The left and right sides of the finished fixed mold pressing plate and the left and right sides of the semi-finished fixed mold pressing plate are fixedly installed with the first guide block, and the left and right sides of the C plate are fixed. The first draw hook that can slide and fit with the first guide block is installed, and the left and right sides of the finished A board and the left and right sides of the semi-finished A board are fixedly installed with the first limit lock that cooperates with the first draw hook. .

The front and rear sides of the above-mentioned finished A board and the front and back sides of the semi-finished A board are fixedly installed with a second guide block, and the front and rear sides of C board are fixedly installed with a second draw hook that can slide and fit with the second guide block , The front and rear sides of the B board are fixedly installed with the second limit lock that cooperates with the second pull hook snap, and the finished product limit rod is installed on the finished fixed mold pressing plate to limit the demoulding and parting distance between the finished A plate and the finished nozzle plate , the semi-finished product limit tie rod is installed on the semi-finished fixed mold pressing plate to limit the demoulding and parting distance between the semi-finished A plate and the semi-finished nozzle plate.

The turntable of the above-mentioned injection molding machine can rotate 360 degrees with the axis of the turntable as the axis of rotation. On the turntable of the injection molding machine, two moving modules are installed side by side symmetrically with the axis of the turntable as the axis of symmetry. The groups are equipped with nozzles for pouring.

Compared with the prior art, the finished fixed mold set and the semi-finished fixed mold set of the present invention are fixed side by side, and the movable mold set is fixedly installed on the turntable of the injection molding machine. Semi-finished mold, the semi-finished cavity for the semi-finished hard plastic main part of the injection molding product is formed in the semi-finished mold; the rotary table of the injection molding machine drives the moving mold core to retain the semi-finished moving mold. It is configured to form a finished product mold. The finished product mold is formed with a secondary plastic injection molding cavity for the semi-finished product of the primary injection molding to complete the injection molding of the entire product. Stick hole. Both the semi-finished mold and the finished mold of the present invention adopt the method of one mold and one cavity. After the semi-finished product is molded and opened, the semi-finished product remains on the movable mold core without ejection, and the movable mold group is rotated to the fixed mold group of the finished product by the turntable of the injection molding machine. The finished product mold is formed with the finished fixed mold group to complete the final molding of the product. The invention has the advantages of reasonable mold structure layout, good product molding quality, high precision of dynamic and fixed mold clamping, no need to consider positioning problems during secondary soft rubber injection molding of semi-finished products, thus saving time and improving production efficiency.

Description of drawings

Fig. 1 is the top view schematic diagram of finished mold of the present invention;

Fig. 2 is a schematic diagram of the cross-sectional structure along the line A-A of Fig. 1;

Fig. 3 is a schematic diagram of the cross-sectional structure along the B-B direction of Fig. 1;

Fig. 4 is the top view schematic diagram of semi-finished mold of the present invention;

Fig. 5 is a C-C cross-sectional structure diagram of Fig. 4;

Fig. 6 is a D-D cross-sectional structure diagram of Fig. 4;

Fig. 7 is the schematic diagram of assembly of the moving module of the present invention;

Fig. 8 is a three-dimensional sketch when the semi-finished mold of the present invention is in a demoulding state;

Fig. 9 is a schematic diagram of the front view of the finished mold of the present invention.

detailed description

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

1 to 9 are structural schematic diagrams of the present invention.

The reference signs are: product M, T-shaped slideway H, Huff slider rod H1, finished fixed mold set 1, finished fixed mold pressing plate 11, finished nozzle plate 12, finished A plate 13, taper slope 13a, finished product Huff slider 14, finished small slider 15, finished shovel 16, finished fixed mold core 17, semi-finished fixed mold group 2, semi-finished fixed mold pressing plate 21, semi-finished nozzle plate 22, semi-finished A plate 23, taper slope 23a, semi-finished product Huff slider 24, semi-finished small slider 25, Huff insert insert 26, semi-finished shovel 27, semi-finished fixed mold core 28, moving module 3, top stick sliding hole 3a, moving mold pressing plate 31, C plate 32 , B plate 33, dynamic model core 34, rubber sealing slanted top 35, slanted top pull block 36, injection molding machine turntable 4, Huff slider hook 5, cooling well 6, first guide block 71, first pull hook 72, The first limit lock 73 , the second guide block 81 , the second draw hook 82 , the second limit lock 83 , and the nozzle 9 .

Figures 1 to 9 are schematic structural views of the present invention. As shown in the figures, the secondary injection mold adopting the mode of one mold and one cavity of the present invention includes a finished fixed mold set 1, a semi-finished fixed mold set 2 and at least one fixed top surface. The movable mold group 3 with the movable model core 34 installed, the finished fixed mold group 1 and the semi-finished fixed mold group 2 are arranged and installed side by side, and the movable mold group 3 is fixedly installed on the injection molding machine turntable 4 to utilize the injection molding machine turntable 4 The rotation of the moving die set 3 realizes the displacement change. At the same time, the up and down movement of the moving die set 3 for mold closing or opening is also completed by the push of the turntable 4 of the injection molding machine. The moving die set 3 and the semi-finished fixed die set 2 are closed up and down. Matched together to form a semi-finished mold, the semi-finished mold is formed with a semi-finished cavity for the semi-finished product of the injection molding product M hard rubber main part; the rotary table 4 of the injection molding machine drives the dynamic model core 34 and retains the semi-finished movable mold group 3. Plane rotation of 180 degrees and the finished product The fixed mold group 1 is combined with upper and lower molds to form a finished mold. The finished mold is formed with a finished rubber cavity for secondary plastic injection molding of the semi-finished product formed by one injection molding to complete the injection molding of the entire product. The movable mold group 3 is equipped with Utilize the top stick of the injection molding machine to eject the top stick slide hole 3a of the product. The moving die set 3 of the present invention is different from the traditional moving die set. The moving die set 3 of the present invention does not have ejector pins, and the ejection of products depends on the ejector pin of the injection molding machine.

The invention relates to an injection mold for a control handle. Both the palm part and the switch part of the control handle are coated with soft rubber. The main body of the hard rubber and the soft rubber coating can be two colors of glue, thus forming a two-color handle. The control handle of the present invention is divided into two injection moldings, the first time the movable mold group 3 and the semi-finished fixed mold group 2 are molded together to complete the injection molding of the semi-finished hard rubber for the main part of the hard rubber, and after the semi-finished injection molding is completed, the movable mold group 3 and the semi-finished fixed mold group 2 After the parting is separated, the semi-finished product does not push out the movable module 3, and the semi-finished follow-up module 3 is directly driven by the turntable 4 of the injection molding machine to rotate to the finished fixed module 1, and the semi-finished movable module 3 is then combined with the finished fixed module 1 to complete the product secondary overmolding. Compared with the method in the prior art that the hard rubber or the main body is injection-molded into a semi-finished product, and then the semi-finished product is placed on another mold for secondary overmolding injection molding, the production efficiency is greatly improved. Both the semi-finished product mold and the finished product mold of the present invention adopt the method of one mold and one cavity, which has the advantages of reasonable mold structure layout, good product molding quality, high precision of dynamic and fixed mold clamping, and no need to consider positioning when secondary soft rubber injection molding of semi-finished products problems, thus saving time and increasing productivity.

In the embodiment, as shown in Fig. 1, Fig. 2 and Fig. 3, the finished fixed die set 1 includes a finished fixed die pressing plate 11, a finished nozzle plate 12, a finished A plate 13 and a finished Huff slider 14 fixedly assembled up and down; The finished product A plate 13 and the finished nozzle plate 12 can be separated from top to bottom. The finished product A plate 13 has a finished Huff assembly cavity with a lower opening and a tapered slope 13a on the front and rear inner walls. The finished Huff slider 14 can slide up and down. Set in the finished product Huff assembly cavity, the finished product Huff slider 14 is slidably equipped with a finished small slider 15, and the finished fixed mold pressing plate 11 is fixedly installed with the finished product nozzle plate 12 and the finished product A plate 13 to push the finished product small slider. Slide block 15 laterally slides the finished product shovel 16 of core pulling.

The center of the finished product A plate 13 is provided with a finished product fixed mold core 17 that extends into the top of the finished product Huff assembly cavity. The finished product fixed mold core 17 is provided with a finished product injection gate. 14 matches with the small slider 15 of the finished product and the semi-finished product retained on the moving model core 34 to form an overmolding injection space for encapsulating the overcoating area of the semi-finished product. The area is composed of the switch overmolding space and the handle overmolding space for secondary overmolding injection molding, and the overmolding injection space constitutes the overmolding cavity of the finished product.

In the embodiment, as shown in Fig. 4, Fig. 5 and Fig. 6, the semi-finished fixed die set 2 includes a semi-finished fixed die pressing plate 21, a semi-finished nozzle plate 22, a semi-finished A plate 23 and a semi-finished half-finished half-finished slider 24 fixedly assembled up and down; The semi-finished A plate 23 and the semi-finished nozzle plate 22 can be separated up and down, and the semi-finished A plate 23 is made of a semi-finished Huff assembly cavity with a lower opening and a tapered slope 23a on the front and rear inner walls. The semi-finished Huff slider 24 can slide up and down. Set in the semi-finished Huff assembly cavity, the semi-finished Huff slider 24 is slidingly fitted with a semi-finished small slider 25, and the semi-finished Huff slider 24 is embedded with a Huff insert insert 26, and the semi-finished fixed mold pressing plate 21 is fixedly installed with the semi-finished product shovel machine 27 that passes the semi-finished nozzle plate 22 and the semi-finished A plate 23 to promote the semi-finished small slide block 25 lateral sliding core pulling. The semi-finished half-finished Huff slider 24 is used to form the semi-finished switch area, and the Hough insert insert 26 is used to form the semi-finished handle area.

The center of the semi-finished product A plate 23 is provided with a semi-finished fixed mold core 28 that extends into the top of the semi-finished Huff assembly cavity. 24. The space formed by the Huff insert insert 26, the semi-finished small slide block 25 and the moving mold core 34 constitutes the semi-finished cavity of the injection-molded semi-finished product. The structures of the finished product fixed mold pressing plate 11 and the semi-finished fixed mold pressing plate 21, the finished product nozzle plate 12 and the semi-finished nozzle plate 22, the finished product A plate 13 and the semi-finished product A plate 23 of the present invention are completely the same, and the finished product fixed mold group 1 and the semi-finished fixed mold Group 2 has its own pouring system due to the different injection molding spaces.

In the embodiment, the finished half-finished slider 14 is composed of a front-to-back half-finished half-finished half-finished half-finished half-finished half-finished slider and a rear half-finished half-finished half-finished half-finished half-finished slider 24. Harff slider composition; the former finished Harff slider and the post -finished Harff slider, the first half of the finished Hafel slider and the second half of the finished product Havle slider are made of T -shaped slider H, corresponding to the finished product A board 13 on the 13th top of the finished product A board 13 The half-finished product A board 23 is fixedly installed with the Huff slide block pull rod H1 which is matched with the sliding of the T-shaped slideway H, and the moving mold group 3 is equipped with a finished Huff slide block 14 to pull the finished product when the mold is opened so that the product remains on the moving model. On the core 34 or when opening the mold, pull the semi-finished product Hough slide block 24 to make the semi-finished product stay on the Hough slide block drag hook 5 on the moving model core 34. The main function of the hook 5 of the half-finished slider is to pull the finished half-finished slider 14 or semi-finished half-finished slider 24 to move downward for a certain distance when the mold is opened, and then the finished half-finished slider 14 or semi-finished Hough slider 24 Then do the core-pulling action of left and right movements.

In the embodiment, the movable mold group 3 includes a fixedly fitted movable mold pressing plate 31 and a C plate 32 and a B plate 33 that can double as a push plate on the C plate 32, and the lower part of the moving mold core 34 is composed of the movable mold pressing plate 31 and the C plate. 32 is positioned firmly, the part of the movable mold core 34 used to form the inner cavity of the product slides through the B plate 33, the Huff slider hook 5 is fixedly installed on the C plate 32, and the movable mold platen 31 and the injection molding machine turntable 4 stationary phase assembly. The ejector roller sliding hole 3a of the present invention is opened on the movable mold pressing plate 31 and the C plate 32. When the product needs to be ejected during mold opening, the ejector roller of the injection molding machine pushes away the B plate 33, so that the pusher in the B plate 33 and the B plate 33 The boards move upward together, and the C board 32 of the present invention is also fixedly installed with a limit screw rod that limits the ejection distance of the B board 33 .

The moving model core 34 of the present invention is equipped with a sealing rubber slanting top 35 on the inner side of the molded product switch area, and the C plate 32 is slidably provided with a slanting top pulling block 36 that drives the sealing rubber slanting top 35 to complete the core-pulling movement of the slanting top. The movement of the top block 36 is realized by the oil cylinder on the injection molding. The movable mold platen 31 is equipped with a cooling well 6 connected to the interior of the movable mold core 34 for accelerating product cooling. The left and right sides of the finished fixed mold platen 11 and The left and right sides of the semi-finished fixed mold pressing plate 21 are fixedly equipped with a first guide block 71, the left and right sides of the C plate 32 are fixedly equipped with a first drag hook 72 that can slide and fit with the first guide block 71, and the finished A plate The left and right sides of 13 and the left and right sides of the semi-finished product A plate 23 are fixedly installed with a first limit lock 73 snap-fitted with the first pull hook 72 . Two first limit locks 73 are installed up and down on each side.

The front and rear sides of the finished product A plate 13 of the present invention and the front and rear sides of the semi-finished product A plate 23 are all fixedly equipped with a second guide pull block 81, and the front and rear sides of the C plate 32 are fixedly equipped with a second guide pull block 81 that can slide with the second guide pull block 81. The second pull hook 82 that wears and fits, the front and rear sides of B plate 33 are fixedly installed with the second limit lock 83 that snaps and cooperates with the second pull hook 82, and the finished product A plate 13 and the finished product are installed on the fixed mold pressing plate 11 of the finished product. The finished product limit pull bar of nozzle plate 12 demoulding and parting distance, the semi-finished product limit pull bar that limits semi-finished product A plate 23 and semi-finished nozzle plate 22 demoulding and parting distances is installed on the semi-finished fixed mold pressing plate 21. The finished limit pull rod and the semi-finished limit pull rod are not shown in the drawings of the present invention.

The turntable 4 of the injection molding machine of the present invention can rotate 360 degrees with the axis of the turntable as the axis of rotation. On the turntable 4 of the injection molding machine, the axis of the turntable is the axis of symmetry. 1 and the semi-finished fixed die set 2 are all equipped with a nozzle 9 for pouring.

For the sake of clarity, the first guide block 71 and the second guide block 81 of the present invention in FIG. 8 only provide a schematic diagram with one installed. As shown in Figures 8 to 9, the present invention works like this. After the injection molding of the semi-finished product mold is completed, the semi-finished fixed mold set 2 and the movable mold set 3 realize the movement of the fixed mold opening under the action of the injection molding machine. Under the action of a limit lock 73 and the first guide block 71, the mold opening of the parting surface I is firstly realized, the semi-finished nozzle plate 22 and the semi-finished A plate 23 are opened, and the ejection of the material head is realized. The mold opening action continues, and the first As soon as the hook 72 collides with the first limit lock 73, the parting surface II is opened, and the semi-finished A plate 23 and B plate 33 are opened. Under the action, the semi-finished Huff slider 24 core-pulling is completed, the displacement of the semi-finished A plate 23 drives the semi-finished shovel 27, and the semi-finished small slider 25 completes the core-pulling action of the switch area, after the semi-finished A plate 23 and B plate 33 are opened for a certain distance , under the limit of the semi-finished product limit pull rod, the fixed and movable mold is disconnected, and the semi-finished material head is taken out. At this time, the semi-finished product is not ejected, and the chassis of the injection molding machine is rotated 180°, so that the movable mold core 34 retains the semi-finished movable mold. Group 3 rotates to the finished product fixed mold group 1 and cooperates with the finished product fixed mold group 1 to form a finished mold for finished product injection molding. After the finished product injection molding process is completed, after repeating the semi-finished movable and fixed mold opening action, the core pulling force of the oil cylinder acts on the inclined top pull The block 36 drives the rubber-sealing inclined top 35 to complete the movement of the inclined top. The top roller of the injection molding machine passes through the top roller sliding hole 3a, and the force is applied to the B plate 33. The B plate 33 is displaced, the parting surface III is opened, and the molded The product, namely the finished product, is ejected, and finally the finished product and material are taken out. The inclined top pulling block 36 drives the sealing inclined top 35 to reset first, and the movable and fixed molds are closed to complete an injection molding cycle.

In the present invention, the hard rubber body and the encapsulation area of the product are designed into two independent moulds, that is, a semi-finished mold and a finished mold, so that the dynamic mold and the static mold between them can cooperate with each other, simply speaking, the semi-finished mold and the finished mold. The dynamic mold structure of the finished mold is the same, the difference is that their static mold is different, that is, the fixed mold group 1 of the finished product and the fixed mold group 2 of the semi-finished product are different. They have their own pouring system and their own filling area.

Semi-finished molds and finished molds have their own pouring systems, semi-finished products are hard rubber injection molding, finished products are soft rubber injection molding, and the injection molding process is carried out at the same time.

The action diagram of the whole injection molding process of the mold is shown in Figure 9. The semi-finished mold and the finished mold are respectively fixed on the injection molding machine. After the mold is closed, the injection molding machine starts to inject the semi-finished mold. After the mold is opened for the first time, the runner part of the semi-finished product is taken out. , the product remains in the cavity, and the turntable 4 of the injection molding machine rotates 180° to complete the semi-finished movable mold group and the finished product movable mold group rotate 180°, respectively clamp the mold with the static mold, and perform the second injection molding through their own pouring system, After pressure holding and cooling, after the mold is opened, the products in the finished product are pushed out with a push plate, and the products in the semi-finished product are kept still, and their runners are taken out respectively, and then the mold is closed, thus completing a complete production process.

Claims (8)

1. A secondary injection mold adopting the method of one mold and one cavity, including a finished fixed mold set (1), a semi-finished fixed mold set (2) and at least one movable mold set (3) with a movable mold core (34) fixedly installed on the top surface ), which is characterized in that: the fixed die set (1) of the finished product and the fixed die set (2) of the semi-finished product are fixedly arranged side by side, and the movable die set (3) is fixedly installed on the turntable (4) of the injection molding machine. The mold group (3) is combined with the semi-finished fixed mold group (2) to form a semi-finished mold, and the semi-finished mold is formed with a semi-finished cavity for the semi-finished hard plastic main part of the injection molding product (M); the described The turntable (4) of the injection molding machine drives the movable mold core (34) to retain the semi-finished movable mold group (3) that rotates 180 degrees in plane and is combined with the finished product fixed mold group (1) to form a finished mold. Formed in the mold is a finished rubber-coated cavity for secondary plastic-coating injection molding of the semi-finished product formed by primary injection molding to complete the injection molding of the entire product product. Stick hole (3a); The finished fixed die set (1) includes a fixed fixed die press plate (11) and a finished nozzle plate (12) as well as a finished product A plate (13) and a finished half slider (14) fixedly assembled up and down; the described The finished A plate (13) and the finished nozzle plate (12) can be separated up and down, and the finished A plate (13) is made with a finished Huff assembly cavity with a lower opening and a tapered slope (13a) on the front and rear inner walls. The finished product Haff slider (14) can slide up and down in the finished product Huff assembly cavity, and the finished product Huff slider (14) is slidably equipped with a finished small slider (15). The plate (11) is fixedly installed with a finished product shovel (16) that passes through the finished product nozzle plate (12) and the finished product A plate (13) to push the finished product small slider (15) to slide and pull the core horizontally; (2) comprise the semi-finished fixed mold pressing plate (21) and the semi-finished nozzle plate (22) and the semi-finished product A plate (23) and the semi-finished product Haff slide block (24) that are fixedly assembled up and down; Described semi-finished product A plate (23) and The semi-finished nozzle plate (22) can be separated from the upper and lower sides, and the semi-finished A plate (23) is formed with a semi-finished Haff assembly cavity with a lower opening and a front and rear inner wall with a tapered slope (23a). The semi-finished Huff slide block ( 24) The one that can slide up and down is installed in the semi-finished Haff assembly cavity. The semi-finished Huff slider (24) is slidably equipped with a semi-finished small slider (25), and the semi-finished Huff slider (24) is embedded with The half-finished insert insert (26), the semi-finished fixed mold pressing plate (21) is fixedly installed with a semi-finished small slider (25) that passes through the semi-finished nozzle plate (22) and the semi-finished A plate (23) to push the semi-finished small slider (25) to slide laterally Core semi-finished shovel (27). 2. The secondary injection mold adopting one mold and one cavity according to claim 1 is characterized in that: the center of the finished product A plate (13) is provided with a finished product that extends into the top of the finished product Haff assembly cavity. Fixed mold core (17), this finished product fixed mold core (17) is provided with finished product injection gate, described finished product fixed mold core (17), finished product Huff slide block (14) and finished product small slide block (15) And the semi-finished products that remain on the dynamic model core (34) are matched to form an overmolding injection space for encapsulating the overcoating area of the semi-finished product. The switch overmolding space and the handle overmolding space of the secondary overmolding injection molding are composed of the overmolding space forming the overmolding cavity of the finished product. 3. The secondary injection mold adopting one mold and one cavity according to claim 2 is characterized in that: the center of the semi-finished A plate (23) is provided with a semi-finished product extending into the top of the semi-finished Haff assembly cavity Fixed model core (28), this semi-finished product fixed model core (28) is provided with semi-finished injection molding gate, described semi-finished product fixed model core (28), semi-finished product Huff slider (24), Huff insert insert ( 26) The space matched with semi-finished small slide block (25) and moving model core (34) constitutes the semi-finished cavity of injection molding semi-finished product. 4. The secondary injection mold adopting one mold and one cavity according to claim 3 is characterized in that: said finished half slider (14) is composed of front and rear finished half sliders and rear finished products The half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half 24 (24) of the described half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half and half-finished half-finished half-finished half-finished half-finished half-finished half-finished half again (24) T-shaped slideways (H) are all formed on the front half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half-finished half half-finished half half-finished half-finished half-finished half-finished half (23). A Huff slider pull rod (H1) that is slidingly matched with the T-shaped slideway (H) is fixedly installed, and the Huff slider (14) of the finished product is installed on the moving module group (3) when the mold is opened to make the product Stay on the moving mold core (34) or pull the semi-finished product Hough slide block (24) when opening the mold to make the semi-finished product stay on the Huff slide block drag hook (5) on the moving mold core (34). 5. The secondary injection mold adopting one mold and one cavity according to claim 4, characterized in that: said moving mold group (3) comprises a fixedly assembled moving mold pressing plate (31) and a C plate (32 ) and the B plate (33) that can double as a push plate on the C plate (32), the bottom of the moving model core (34) is firmly positioned by the moving mold pressing plate (31) and the C plate (32), the moving The mold core (34) is used to slide through the B plate (33) for the part of the inner cavity of the molded product, and the Huff slide block drag hook (5) is fixedly installed on the C plate (32), and the movable mold pressing plate ( 31) It is assembled with the stationary phase of the injection molding machine turntable (4). 6. The secondary injection mold adopting one mold and one cavity according to claim 5, characterized in that: the moving mold core (34) is equipped with a rubber-sealing slant top ( 35), the C plate (32) is slidably provided with a slanted top pull block (36) that drives the rubber-sealed slanted roof (35) to complete the core-pulling movement of the slanted roof, and the movable mold pressing plate (31) is equipped with There is a cooling well (6) connected to the interior of the movable mold core (34) for accelerating product cooling, and the left and right sides of the finished fixed mold pressing plate (11) and the left and right sides of the semi-finished fixed mold pressing plate (21) are fixed A first guide block (71) is installed, and the left and right sides of the C plate (32) are fixedly equipped with a first draw hook (72) that can slide and fit with the first guide block (71). The left and right side surfaces of the finished product A plate (13) and the left and right sides of the semi-finished product A plate (23) are all fixedly equipped with a first limit lock (73) snap-fitted with the first drag hook (72). 7. The secondary injection mold adopting one mold and one cavity mode according to claim 6 is characterized in that: the front and rear sides of the finished product A plate (13) and the front and rear sides of the semi-finished A plate (23) are both A second guide block (81) is fixedly installed, and the front and rear sides of the C plate (32) are fixedly equipped with a second draw hook (82) that can slide and fit with the second guide block (81). The front and rear side surfaces of the B plate (33) are fixedly equipped with a second limit lock (83) that snaps and cooperates with the second drag hook (82). plate (13) and finished product nozzle plate (12) demoulding parting distance finished product limit pull bar, described semi-finished product fixed mold pressing plate (21) is installed with limit semi-finished product A plate (23) and semi-finished product nozzle plate (22) release Half-finished limit pull rod for mold parting distance. 8. The secondary injection mold adopting one mold and one cavity according to claim 7 is characterized in that: the turntable (4) of the injection molding machine can rotate 360 degrees with the axis of the turntable as the axis of rotation, and the injection mold On the turntable (4) of the machine, two moving modules (3) are installed symmetrically side by side with the axis of the turntable as the axis of symmetry, and the finished fixed module (1) and the semi-finished fixed module (2) are equipped with Pouring nozzle (9).