Double-injection mold with bottom rubber coating function

Abstract

The double-injection mold with the bottom rubber coating function comprises a front mold plate, a rear mold plate, a runner module, a cavity module, a supporting module, a receding module and an ejector pin module, a first connecting rod in the supporting module can stretch into the rear mold plate, and a first moving plate is arranged in the rear mold plate in a sliding mode; a first connecting rod in the first moving plate can extend into the rear mold plate, a second moving plate is arranged in the rear mold plate in a sliding manner, and the second moving plate is driven to form the mold cavity into a second injection mold cavity which is arranged above the second moving plate and is provided with a receding space. In other words, the first product is formed in the cavity in the first injection process through cooperation of the supporting module, the cavity in the second injection process is located below the first product through cooperation of the receding module to form the receding space, the second product connected with the first product is formed in the receding space, bottom rubber coating of the product is achieved, and the machining efficiency and precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of mold devices, and in particular to a double-shot mold with a bottom encapsulation function. Background Art

[0002] Double shot overmolding mold is a mold that uses two plastic materials to be injected twice on the same mold at different injection ports, forming the mold twice, but the product is only ejected once. Often, the first product of a double shot overmolding mold is not ejected, and is ejected after the second product is molded on the first product for the second time.

[0003] The above-mentioned encapsulation form is convenient for molding the second product on the side of the first product close to the glue outlet of the runner module. However, if the second product needs to be molded on the side of the first product away from the glue outlet of the runner module, it is necessary to eject the first product in one shot and then put the product back into the rear mold core manually or by a robot, and then mold the second product after the mold is closed. This method has low processing efficiency, and if the first product is not accurately placed in the rear mold core, the molding position of the second product may be incorrect, affecting product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a double-shot mold with a bottom encapsulation function. In the present invention, the double-shot mold can form cavities with spatial structures of different sizes, that is, the cavity in the first shot forms a first product, and the cavity in the second shot is located below the first product through the cooperation of a give-way module to form a give-way space, and a second product connected to the first product is formed in the give-way space, thereby realizing the bottom encapsulation of the product and improving the processing efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a double-shot mold with bottom encapsulation function, including a front mold plate and a rear mold plate, characterized in that it also includes:

[0006] A flow channel module is arranged on the front template,

[0007] The cavity mold set includes at least two front mold cores and a rear mold core matched with the front mold cores, the front mold cores and the rear mold cores are respectively arranged on the front mold plate and the rear mold plate, the front mold core and the rear mold core are connected to form a cavity, the end of the runner module extends into the cavity, and the lower end of the rear mold core is provided with a bottom channel connected to the cavity.

[0008] The supporting module comprises a first connecting rod and a first movable plate, wherein the first connecting rod is arranged on the front template and can extend into the rear template, the first movable plate is slidably arranged in the rear template, one end of the first movable plate is connected to the first connecting rod, and the other end extends into the bottom channel, and the first movable plate is driven by the first connecting rod to form the cavity into an injection cavity.

[0009] The yielding mold assembly includes a second connecting rod and a second movable plate. The second connecting rod is arranged on the front mold plate and can extend into the rear mold plate. The second movable plate is slidably arranged in the rear mold plate. One end of the second movable plate is connected to the second connecting rod and the other end extends into the bottom channel. The second movable plate is driven by the second connecting rod to form the cavity above the second movable plate into a two-shot cavity with a yielding space.

[0010] The ejector pin module is arranged on the rear mold plate and extends into the rear mold core, and can be driven to extend into the mold cavity.

[0011] As a further optimization, the first connecting rod includes a first column and a first oblique push block arranged at its lower end, the first movable plate includes a first transverse moving plate and a first lifting plate, the first transverse moving plate can be horizontally movably arranged in the rear template, one end of which is abutted against the first oblique push block, and the other end of which has a first pushing inclined surface, the lower end of the first lifting plate is provided with a first support rod inclined surface abutting against the first pushing inclined surface, and it can be vertically arranged in the rear template.

[0012] As a further optimization, the second connecting rod includes a second column and a second oblique push block arranged at its lower end, the length of the second oblique push block is smaller than the length of the first oblique push block, the second movable plate includes a second transverse moving plate and a second lifting plate, the second transverse moving plate can be horizontally movably arranged in the rear template, one end of which is abutted against the second oblique push block, and the other end of which has a second pushing inclined surface, and the lower end of the second lifting plate is provided with a second support rod inclined surface abutting against the second pushing inclined surface, which can be vertically arranged in the rear template.

[0013] As a further optimization, both the first transverse moving plate and the second transverse moving plate are provided with oblique insertion holes, and the first oblique pushing block and the second oblique pushing block extend into the insertion holes respectively.

[0014] As a further optimization, the first transverse plate and the second transverse plate are both provided with limit plates, the limit plates are provided with limit grooves, and the lower ends of the first lifting plate and the second lifting plate are both provided with extension plates, and the extension plates are embedded in the limit grooves.

[0015] As a further optimization, a stop block is provided on the rear template at least at the end of the moving stroke of the first oblique push block, which is used to limit and position the first oblique push block to ensure the position of the first movable plate.

[0016] As a further optimization, a blocking column which can abut against the first movable plate is provided on the front mold core located in the first-shot cavity and is used to form a second-shot through-hole on the first-shot product, so as to facilitate the runner module to feed the molten material through the second-shot through-hole to the lower end of the first product to realize the encapsulation action.

[0017] As a further optimization, the first-shot cavity and the second-shot cavity are both provided with a plurality of cavities, which can improve the processing efficiency.

[0018] As a further optimization, the runner module includes a glue feed nozzle, a diverter plate and a hot nozzle. The glue feed nozzle and the diverter plate are both arranged on the front template and are connected to each other. A plurality of hot nozzles are arranged on the diverter plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The double-shot mold in the present invention can form cavities with spatial structures of different sizes, that is, the cavity in the first shot forms the first product, and the cavity in the second shot is located below the first product through the cooperation of the give-way module to form a give-way space, and the second product connected to the first product is formed in the give-way space, thereby realizing the bottom encapsulation of the product and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present invention.

[0022] Figure 2 It is a cross-sectional view of the present invention.

[0023] Figure 3 This is a structural diagram of the present invention after removing the front template.

[0024] Figure 4 It is a structural diagram of the supporting module and the giving way module of the present invention.

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 It is a schematic diagram of the first product in the present invention. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 6As shown, a double-shot mold with a bottom encapsulation function includes a front template 10, a rear template 20, a runner module 30, a cavity module 40, a support module 50, a clearance module 60 and an ejector module 70. The runner module 30 is arranged on the front template 10, and the cavity module 40 includes at least two front mold cores 41 and a rear mold core 42 matched with the front mold core 41. The front mold core 41 and the rear mold core 42 are respectively arranged on the front template 10 and the rear template 20. The mold core 42 is connected to form a cavity. The runner module 30 adopts a conventional arrangement, which includes a glue inlet nozzle 31, a diverter plate 32 and a hot nozzle 33. The glue inlet nozzle 31 and the diverter plate 32 are both arranged on the front mold plate 10 and are connected. A plurality of hot nozzles 33 are arranged on the diverter plate 32. The end of the runner module 30 (hot nozzle 33) extends into the cavity. The lower end of the rear mold core 42 is provided with a bottom channel 420 connected to the cavity. The support module 50 includes a first connecting rod 51 and a first movable plate 52. The first connecting rod 51 is arranged on the front template 10 and can extend into the rear template 20. The first movable plate 52 is slidably arranged in the rear template 20. One end of the first movable plate 52 is connected to the first connecting rod 51 and the other end extends into the bottom channel 420. The first movable plate 52 is driven by the first connecting rod 51 to form a cavity 401. The yielding module 60 includes a second connecting rod 61 and a second movable plate 62. The second connecting rod 61 is arranged on the front template 10 and can extend into the rear template 20. The second movable plate 62 is slidably arranged in the rear template 20, one end of which is connected to the second connecting rod 61, and the other end extends into the bottom channel 420. The second movable plate 62 is driven by the second connecting rod 61 to form a two-shot cavity 402 with a clearance space 400 above the second movable plate 62. The ejector module 70 is arranged on the rear template 20, which adopts a conventional arrangement, including an ejector plate and a plurality of ejectors. The ejector extends into the rear mold core 42 and can be driven to extend into the cavity.

[0029] In the present invention, the double-shot form needs to have a first front mold core 411 and a second front mold core 412, and a first rear mold core 421 and a second rear mold core 422. The front template 10 drives the first front mold core 411 and the second front mold core 412 to respectively abut against the first rear mold core 421 and the second rear mold core 422 on the rear template 20 to form a cavity, which are a one-shot cavity 401 and a two-shot cavity 402 respectively. The formation process of the one-shot cavity 401 is: the front template 10 drives the first connecting rod 51 to move, the first connecting rod 51 abuts against the first movable plate 52 and drives the first movable plate 52 to move, so that the first movable plate 52 The end of the bottom channel 420 extends into the bottom channel 420 and finally becomes flush with the upper end surface of the bottom channel 420 to form a first shot cavity 401. The runner module 30 feeds the first molten material into the first shot cavity 401 to form the first product 801. After completing the first shot, the front mold plate 10 drives the first front mold core 411 and the second front mold core 412 to separate from the rear mold plate 20, and the first product 801 is located in the first rear mold core 421. During this process, the first connecting rod 51 also separates from the rear mold plate 20 to reset the first moving plate 52. The external rotating mechanism drives the rear mold plate 20 to rotate 180°, so that the first rear mold core 421 and the second rear mold core 422 are The positions of the two molds are interchanged. When the front mold plate 10 abuts against the rear mold plate 20 again, the first front mold core 411 and the second front mold core 412 abut against the second rear mold core 422 and the first rear mold core 421 to form cavities, which are the one-shot cavity 401 and the two-shot cavity 402 respectively. The forming process of the one-shot cavity 401 and the molding process of the first product 801 are the same as described above. The forming process of the two-shot cavity 402 is as follows: the front mold plate 10 drives the second connecting rod 61 to move, the second connecting rod 61 abuts against the second movable plate 62 and drives the second movable plate 62 to move, so that the end of the second movable plate 62 extends into the bottom channel 4 20 and finally have a clearance space 400 between the upper end surface of the bottom channel 420, then the two-shot cavity 402 includes the space occupied by the first product 801 and the clearance space 400. Since the clearance space 400 is formed below the first product 801, the runner module 30 can feed the second molten material into the two-shot cavity 402 and form a second product connected to the lower end of the first product 801. After the front template 10 is separated from the rear template 20, the final molded product (the lower end of the first product is connected to the second product) can be ejected out of the rear mold core 42 through the ejector module 70 to achieve rubber encapsulation at the bottom of the product.

[0030] The double-shot mold in the present invention can form cavities with spatial structures of different sizes, that is, the cavity in the first shot forms the first product, and the cavity in the second shot is located below the first product through the cooperation of the give-way module to form a give-way space, and the second product connected to the first product is formed in the give-way space, thereby achieving the bottom encapsulation of the product and improving the processing efficiency; it is particularly suitable for encapsulating the gaps of products with an inverted U-shaped structure.

[0031] Preferably, the first connecting rod 51 includes a first column 511 and a first inclined push block 512 arranged at the lower end thereof, and the first movable plate 52 includes a first transverse plate 521 and a first lifting plate 522. The first transverse plate 521 can be horizontally movably arranged in the rear template 20, one end of which abuts against the first inclined push block 512, and the other end of which has a first abutting inclined surface. The lower end of the first lifting plate 522 is provided with a first support rod inclined surface abutting against the first abutting inclined surface, which can be vertically arranged in the rear template 20; the front template 10 drives the first column 511 and the first inclined push block 512 to move, and the first inclined push block 512 drives the first transverse plate 521 to move. The first transverse plate 521 interacts with the first supporting inclined surface of the first lifting plate 522 through its first abutting inclined surface, so that the first lifting plate 522 can extend into the bottom channel 420 and be flush with the upper end surface of the bottom channel 420.

[0032] Similarly, the second connecting rod 61 includes a second column 611 and a second oblique push block 612 arranged at the lower end thereof, the length of the second oblique push block 612 is less than the length of the first oblique push block 512, the second movable plate 62 includes a second transverse plate 621 and a second lifting plate 622, the second transverse plate 621 can be horizontally movably arranged in the rear template 20, one end of which abuts against the second oblique push block 612, and the other end of which has a second push inclined surface, and the lower end of the second lifting plate 622 is provided with a second support rod inclined surface abutting against the second push inclined surface, which can be vertically arranged in the rear template 20; the front template 10 drives the second column 611 and the second oblique push block 61 2 moves, the second oblique push block 612 drives the second transverse plate 621 to move, and the second transverse plate 621 interacts with the second supporting inclined surface of the second lifting plate 622 through its second push inclined surface so that the second lifting plate 622 can extend into the bottom channel 420. However, since the length of the second oblique push block 612 is less than that of the first oblique push block 512, the distance it drives the second transverse plate 621 to move will be shortened, which shortens the distance the second lifting plate 622 extends into the bottom channel 420. Therefore, the end of the second lifting plate 622 cannot be flush with the upper end surface of the bottom channel 420, thus forming a clearance space 400 that can accommodate the second product. It should be noted that the above-mentioned second transverse plate 621 and the second lifting plate 622 can have the same structure as the first transverse plate 521 and the first lifting plate 522, respectively.

[0033] Preferably, inclined holes are provided on the first transverse plate 521 and the second transverse plate 621, such as a first inclined hole 5210 is provided on the first transverse plate 521, and a second inclined hole is provided on the second transverse plate 621, and the first inclined push block 512 and the second inclined push block 612 extend into the holes respectively. The setting of the inclined holes can ensure that the first inclined push block 512 and the second inclined push block 612 can accurately act on the first transverse plate 521 and the second transverse plate 621 respectively.

[0034] Furthermore, the first transverse plate 521 and the second transverse plate 621 are both provided with limit plates, and the limit plates are provided with limit grooves, such as a first limit groove 5212 is provided on the first limit plate 5211 provided on the first transverse plate 521, and a second limit groove is provided on the second limit plate provided on the second transverse plate 621; the lower ends of the first lifting plate 522 and the second lifting plate 622 are both provided with extension plates, such as a first extension plate 5221 is provided at the lower end of the first lifting plate 522, and a second extension plate is provided at the lower end of the second lifting plate 622; the extension plates are correspondingly embedded in the limit grooves, which can ensure the movement accuracy of the first lifting plate 522 and the second lifting plate 622, thereby ensuring the precise molding of the first-shot cavity 401 and the second-shot cavity 402.

[0035] In addition, a stop block 53 is provided on the rear template 20 at the end of the moving stroke of the first oblique push block 512 for limiting and positioning the position of the first oblique push block 512 .

[0036] A blocking column (not shown) that can abut against the first movable plate 52 is provided on the front mold core located in the first-shot cavity 401 and is used to form the second-shot through hole 800 on the first-shot product (the first product 801). That is, in the first-shot cavity 401, the blocking column on the front mold core 41 (specifically, the first front mold core 411) is used to occupy a position so that the first molten material discharged from the glue outlet of the runner module 30 cannot cover this position, thereby forming a hole on the first product 801, which can be used for the second-shot through hole 800. Specifically, there is no blocking column on the front mold core 41 (specifically the second front mold core 412) in the second-shot cavity 402, and a glue outlet of the runner module 30 is provided at the second-shot through hole 800 in the second-shot cavity 402. The second molten material in the second-shot process passes through the first product 801 through the second-shot through hole 800 and enters the clearance space 400, and a part of the second molten material is finally retained in the second-shot through hole 800, which can further improve the connection reliability between the first product 801 and the second product.

[0037] In the present invention, there are multiple first-shot cavity 401 and multiple second-shot cavity 402, which can be processed in batches to improve processing efficiency.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A double-shot mold with bottom encapsulation function, comprising a front mold plate and a rear mold plate, characterized in that: Also includes: A flow channel module is arranged on the front template, The cavity mold set includes at least two front mold cores and a rear mold core matched with the front mold cores, the front mold cores and the rear mold cores are respectively arranged on the front mold plate and the rear mold plate, the front mold core and the rear mold core are connected to form a cavity, the end of the runner module extends into the cavity, and the lower end of the rear mold core is provided with a bottom channel connected to the cavity. The supporting module comprises a first connecting rod and a first movable plate, wherein the first connecting rod is arranged on the front template and can extend into the rear template, the first movable plate is slidably arranged in the rear template, one end of the first movable plate is connected to the first connecting rod, and the other end extends into the bottom channel, and the first movable plate is driven by the first connecting rod to form the cavity into an injection cavity. The yielding mold assembly includes a second connecting rod and a second movable plate. The second connecting rod is arranged on the front mold plate and can extend into the rear mold plate. The second movable plate is slidably arranged in the rear mold plate. One end of the second movable plate is connected to the second connecting rod and the other end extends into the bottom channel. The second movable plate is driven by the second connecting rod to form the cavity above the second movable plate into a two-shot cavity with a yielding space. The ejector pin module is arranged on the rear mold plate and extends into the rear mold core, and can be driven to extend into the mold cavity.

2. The double-shot mold with bottom encapsulation function according to claim 1, characterized in that: The first connecting rod includes a first column and a first oblique push block arranged at its lower end, the first movable plate includes a first transverse moving plate and a first lifting plate, the first transverse moving plate can be horizontally movably arranged in the rear template, one end of which is abutted against the first oblique push block, and the other end of which has a first abutting inclined surface, the lower end of the first lifting plate is provided with a first support rod inclined surface abutting against the first abutting inclined surface, and it can be vertically arranged in the rear template.

3. The double-shot mold with bottom encapsulation function according to claim 2, characterized in that: The second connecting rod includes a second column and a second oblique pushing block arranged at its lower end, the length of the second oblique pushing block is smaller than that of the first oblique pushing block, the second movable plate includes a second transverse moving plate and a second lifting plate, the second transverse moving plate can be horizontally movably arranged in the rear template, one end of which is abutted against the second oblique pushing block, and the other end of which has a second pushing inclined surface, the lower end of the second lifting plate is provided with a second support rod inclined surface abutting against the second pushing inclined surface, and it can be vertically arranged in the rear template.

4. The double-shot mold with bottom encapsulation function according to claim 3, characterized in that: The first transverse moving plate and the second transverse moving plate are both provided with oblique insertion holes, and the first oblique pushing block and the second oblique pushing block extend into the insertion holes respectively.

5. The double-shot mold with bottom encapsulation function according to claim 3 or 4, characterized in that: The first transverse plate and the second transverse plate are both provided with a limiting plate, and the limiting plate is provided with a limiting groove. The lower ends of the first lifting plate and the second lifting plate are both provided with an extension plate, and the extension plate is embedded in the limiting groove.

6. The double-shot mold with bottom encapsulation function according to claim 3, characterized in that: A stop block is provided on the rear template at least at the end of the moving stroke of the first oblique push block.

7. The double-shot mold with bottom encapsulation function according to claim 1, characterized in that: A blocking column which can abut against the first movable plate is provided on the front mold core located in the first-shot cavity and is used for forming a second-shot through hole on the first-shot product.

8. The double-shot mold with bottom encapsulation function according to claim 1, characterized in that: There are multiple first-shot cavities and multiple second-shot cavities.

9. The double-shot mold with bottom encapsulation function according to claim 1, characterized in that: The flow channel module includes a glue inlet nozzle, a diverter plate and a hot nozzle. The glue inlet nozzle and the diverter plate are both arranged on the front template and are connected to each other. A plurality of hot nozzles are arranged on the diverter plate.

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