In-mold multi-form insert injection mold

Abstract

The utility model provides an in-mold multi-form insert injection mold. The in-mold multi-form insert injection mold comprises a front mold, a rear mold, a front mold core arranged on the front mold and a rear mold core arranged on the rear mold, the rear mold core is provided with a forming platform, the forming platform is composed of a carrying table for placing a metal plate and a peripheral platform on the periphery of the carrying table, a positioning retaining wall is arranged on the outer edge of the carrying table, a vacuum mounting hole penetrating to the carrying table is formed in the rear mold core, and a vacuum suction pipe is assembled in the vacuum mounting hole. When a metal plate is put into the mold, the periphery of the metal plate is positioned through the positioning retaining wall, accurate putting of the metal plate is achieved, meanwhile, the metal plate is sucked through the vacuum suction pipe, fixing of the metal plate is achieved, the metal plate can be accurately and firmly put into the mold, and the percent of pass of in-mold injection molding products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold with multiple-form inserts in a mold. Background Art

[0002] In-mold injection molding refers to a process in which nuts, metal plates and other parts are placed in the mold before injection molding. Figure 1 and Figure 2 The product shown is an in-mold injection molded product, which includes an injection molded part 1 and a metal plate 2, a busbar 4, a nut 3, and a U-shaped metal part 5 that connect the injection molded part 1. Before injection molding, the metal plate 2, the busbar 4, the nut 3, and the U-shaped metal part 5 need to be placed on the rear mold core of the mold before the injection molding of the injection molded part is performed. However, in this product, the metal plate 2 is relatively large in size. When placed in the mold, it cannot be fixed well by the existing limiting structure alone, which easily causes it to fall off, thereby causing the product to be unqualified. Utility Model Content

[0003] Therefore, the utility model provides an in-mold multi-form insert injection mold to solve the above problems.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] An in-mold multi-form insert injection mold comprises a front mold, a rear mold, a front mold core arranged on the front mold, and a rear mold core arranged on the rear mold; the rear mold core has a molding platform, the molding platform is composed of a carrier for placing a metal plate and an outer platform outside the carrier, a positioning retaining wall is arranged on the outer edge of the carrier, a vacuum installation hole is opened on the rear mold core and penetrates to the carrier, and a vacuum suction pipe is installed in the vacuum installation hole.

[0006] Furthermore, the positioning retaining wall is formed by an integral protrusion of the rear mold core.

[0007] Furthermore, the end surface of the first end of the vacuum suction tube is flush with the surface of the carrier.

[0008] Furthermore, the second end of the vacuum suction pipe extends to the side wall of the rear mold and is connected to a vacuum joint.

[0009] Furthermore, the rear mold core is also equipped with an inclined top insert, the bottom of the inclined top insert is connected to the driving plate of the rear mold, and the top of the inclined top insert passes through the rear mold core and is flush with the surface of the rear mold core.

[0010] Furthermore, a slanted top mounting hole penetrating front to back is opened on the rear mold core, a port of the slanted top mounting hole extends into the carrier through the peripheral platform, and the slanted top insert is passed through the slanted top mounting hole to correspond to the positions of the peripheral platform and the carrier at the same time.

[0011] Furthermore, the rear mold core also has a molding portion located outside the molding platform, and the molding portion is provided with a positioning boss and / or a positioning slot.

[0012] Furthermore, the positioning boss is formed by an integral protrusion of the rear mold core, or the positioning boss is formed by an ejector pin penetrating the rear mold core.

[0013] Furthermore, the rear mold core includes a first rear mold core block and a second rear mold core block spliced ​​together, the forming platform is formed on the surface of the first rear mold core block, and the forming portion is formed on the surface of the second rear mold core block.

[0014] Furthermore, cooling pipes are provided in the front mold, the rear mold, the front mold core and the rear mold core.

[0015] The technical solution provided by the utility model has the following beneficial effects:

[0016] When placing the metal plate into the mold, the outer periphery of the metal plate is positioned by the positioning retaining wall to achieve accurate placement of the metal plate. At the same time, the metal plate is sucked by the vacuum suction tube to fix the metal plate, so that the metal plate can be accurately and firmly placed in the mold, ensuring the qualified rate of the in-mold injection molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is the appearance of the injection molded product in the background art;

[0018] Figure 2 Shown is a schematic diagram of the structural decomposition of an injection molded product in the background art;

[0019] Figure 3 The figure shows the assembly structure schematic diagram of the rear mold and the rear mold core of the in-mold multi-form insert injection mold in the embodiment;

[0020] Figure 4 The figure shows the structure schematic diagram of the rear mold core in the embodiment;

[0021] Figure 5 The figure shows a schematic diagram of the structure after the rear mold core is loaded with components in the embodiment;

[0022] Figure 6 The figure shows a schematic diagram of the structure decomposition of the rear mold core in the embodiment;

[0023] Figure 7 Shown is a partial structural cross-sectional view of an in-mold multi-form insert injection mold in an embodiment. DETAILED DESCRIPTION

[0024] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0026] Reference Figures 3 to 7 As shown, the present embodiment provides an in-mold multi-form insert injection mold, comprising a front mold (not shown), a rear mold 200, a front mold core (not shown) disposed on the front mold, and a rear mold core 100 disposed on the rear mold 200; in the present embodiment, there are two sets of mold cores, and after the front mold and the rear mold 200 are molded together, the front mold core and the rear mold core 100 are closed and enclosed together to form an injection cavity. Specifically, the present embodiment is based on injection molding such as Figure 1 and Figure 2 products as an example.

[0027] The rear mold core 100 has a molding platform 11 and a molding part 21 located outside the molding platform 11. The molding platform 11 is used to place the metal plate 2, and the molding part 21 is used to place the busbar 4, the nut 3 and the U-shaped metal part 5. Specifically, the molding platform 11 is composed of a carrier 111 for placing the metal plate 2 and a peripheral platform 112 outside the carrier 111, and the peripheral platform 112 participates in molding the injection molded part 1. A positioning retaining wall 12 is provided on the outer edge of the carrier 111, and a vacuum mounting hole 14 that passes through the carrier 111 is opened on the rear mold core 100, and a vacuum suction pipe 31 is installed in the vacuum mounting hole 14. The molding part 21 is provided with a positioning boss 22 and a positioning slot 23. The positioning boss 22 is used to position the nut 3 and the busbar 4, and the positioning slot 23 is used to insert the U-shaped metal part 5.

[0028] Before the injection molding operation, the metal plate 2, busbar 4, nut 3 and U-shaped metal part 5 need to be placed in the mold. The specific method in this embodiment is: place the metal plate 2 in the mold, and position the outer periphery of the metal plate 2 through the positioning retaining wall 12 to achieve accurate placement of the metal plate 2. At the same time, the metal plate 2 is sucked by the vacuum suction tube 31 to fix the metal plate 2; the nut 3 and busbar 4 are placed in the mold in turn and positioned and fixed by the positioning protrusion 22 on the molding part 21; the U-shaped metal part 5 is placed in the mold and inserted into the positioning slot 23. In this way, the placement of the components is completed, as shown in FIG. Figure 5 Then, the injection molded part 1 is injection molded to complete the injection molding of the product.

[0029] In this embodiment, in order to place the metal plate 2 which is easy to fall off, the outer periphery of the metal plate 2 is positioned by the positioning retaining wall 12 to achieve accurate placement of the metal plate 2. At the same time, the metal plate 2 is sucked by the vacuum suction tube 31 to fix the metal plate 2, so that the metal plate 2 can be accurately and firmly placed in the mold, thereby ensuring the qualified rate of the in-mold injection molded products.

[0030] Specifically, in this embodiment, the rear mold core 100 is formed by splicing the first rear mold core block 10 and the second rear mold core block 20, the molding platform 11 is formed on the surface of the first rear mold core block 10, and the molding portion 21 is formed on the surface of the second rear mold core block 20. In this way, a new product can be obtained by replacing the first rear mold core block 10 or the second rear mold core block 20 and re-splicing, which has wider applicability. Of course, in other embodiments, the rear mold core 100 can also be a whole, or spliced ​​by more than two rear mold core blocks.

[0031] The positioning retaining wall 12 is formed by an integral protrusion of the rear mold core 100 (specifically, the first rear mold core block 10), without any assembly gap, and the appearance of the product after injection molding is neater.

[0032] The end surface of the first end of the vacuum suction tube 31 is flush with the surface of the carrier 111, so that when the metal plate 2 is placed, the end surface of the first end of the vacuum suction tube 31 is just attached to the metal plate 2, so that the metal plate 2 can be better sucked while ensuring the stable placement of the metal plate 2. Of course, in other embodiments, the end surface of the first end of the vacuum suction tube 31 can also be recessed in the surface of the carrier 111 without affecting the placement of the metal plate 2.

[0033] At the same time, in order to better connect the external vacuum equipment, the second end of the vacuum suction pipe 31 extends to the side wall of the rear mold 200 and is connected to a vacuum connector 32. The vacuum connector 32 is used to connect the external vacuum equipment, and there is enough layout space.

[0034] The rear mold core 100 is also equipped with an inclined top insert 41, the bottom of which is connected to the drive plate of the rear mold 200, and the top of which passes through the rear mold core 100 and is flush with the surface of the rear mold core 100; in this way, the product after injection molding can be ejected. At the same time, in addition to the inclined top insert 41, an ejector pin 42 is also inserted into the rear mold core 100, and the bottom of the ejector pin 42 is also connected to the drive plate of the rear mold 200 for ejecting the product.

[0035] Specifically, the rear mold core 100 (specifically the first rear mold core block 10 in the present embodiment) is provided with an inclined top mounting hole 13 which passes through from front to back, and the port of the inclined top mounting hole 13 extends into the carrier 111 through the peripheral platform 112, and the inclined top insert 41 is passed through the inclined top mounting hole 13 to correspond to the positions of the peripheral platform 112 and the carrier 11 at the same time. During ejection, the inclined top insert 41 can act on the metal plate 2 and the injection molded part 1 at the same time, and eject the two synchronously, thereby avoiding the risk of product breakage at the junction of the metal plate 2 and the injection molded part 1.

[0036] Among the multiple positioning protrusions 22, some of the positioning protrusions 22 are formed by integrally protruding from the rear mold core 100 (specifically, the second rear mold core block 20), and other part of the positioning protrusions 22 are formed by the ejector pins 42 penetrating the rear mold core 100. The layout is made according to the actual situation. Of course, in other embodiments, they can also be formed by integrally protruding from the rear mold core 100 (specifically, the second rear mold core block 20), or they can all be formed by the ejector pins 42 penetrating the rear mold core 100.

[0037] At the same time, in order to speed up the cooling molding of the injection molding, cooling pipes are arranged inside the front mold, the rear mold 200, the front mold core and the rear mold core 100.

[0038] The multi-form insert injection mold provided in this embodiment is based on injection molding such as Figure 1 and Figure 2 The product shown is used as an example for explanation. Of course, in other embodiments, depending on the product, the structure of the in-mold multi-form insert injection mold is not limited to this. For example, when only the metal plate 2 needs to be placed, the rear mold core 100 can also only have the structure of the molding platform 11, that is, the above-mentioned molding part 21 structure is not set.

[0039] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An in-mold multi-form insert injection mold, comprising a front mold, a rear mold, a front mold core arranged on the front mold, and a rear mold core arranged on the rear mold; characterized in that: The rear mold core has a forming platform, which is composed of a carrier for placing a metal plate and a peripheral platform outside the carrier. A positioning retaining wall is provided at the outer edge of the carrier. A vacuum installation hole that passes through the carrier is opened on the rear mold core, and a vacuum suction pipe is installed in the vacuum installation hole.

2. The in-mold multi-form insert injection mold according to claim 1, characterized in that: The positioning retaining wall is formed by an integral protrusion of the rear mold core.

3. The in-mold multi-form insert injection mold according to claim 1, characterized in that: The end surface of the first end of the vacuum suction tube is flush with the surface of the carrier.

4. The in-mold multi-form insert injection mold according to claim 3, characterized in that: The second end of the vacuum suction pipe extends to the side wall of the rear mold and is connected to a vacuum joint.

5. The in-mold multi-form insert injection mold according to claim 1, characterized in that: The rear mold core is also equipped with an inclined top insert, the bottom of which is connected to the driving plate of the rear mold, and the top of which passes through the rear mold core and is flush with the surface of the rear mold core.

6. The in-mold multi-form insert injection mold according to claim 5, characterized in that: The rear mold core is provided with an inclined top mounting hole which runs through the front and back, and the port of the inclined top mounting hole extends into the carrier through the peripheral platform, and the inclined top insert is passed through the inclined top mounting hole to correspond to the positions of the peripheral platform and the carrier at the same time.

7. The in-mold multi-form insert injection mold according to claim 1, characterized in that: The rear mold core also has a molding portion located outside the molding platform, and the molding portion is provided with a positioning protrusion and / or a positioning groove.

8. The in-mold multi-form insert injection mold according to claim 7, characterized in that: The positioning protrusion is formed by an integral protrusion of the rear mold core, or the positioning protrusion is formed by an ejector pin penetrating the rear mold core.

9. The in-mold multi-form insert injection mold according to claim 7, characterized in that: The rear mold core is formed by splicing a first rear mold core block and a second rear mold core block, the forming platform is formed on the surface of the first rear mold core block, and the forming portion is formed on the surface of the second rear mold core block.

10. The in-mold multi-form insert injection mold according to claim 1, characterized in that: The front mold, the rear mold, the front mold core and the rear mold core are all provided with cooling pipes.

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