CN218519052U - Double-color injection mold - Google Patents

Double-color injection mold Download PDF

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Publication number
CN218519052U
CN218519052U CN202222383159.9U CN202222383159U CN218519052U CN 218519052 U CN218519052 U CN 218519052U CN 202222383159 U CN202222383159 U CN 202222383159U CN 218519052 U CN218519052 U CN 218519052U
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molding
mold
die
forming
insert
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谢天云
钟茬文
郭鑫
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Xinlida Mould Industry Huizhou Co ltd
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Xinlida Mould Industry Huizhou Co ltd
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Abstract

The utility model discloses a double-color injection mold, which comprises a molding component and a lateral demolding component, wherein the molding component comprises a first molding front mold, a second molding front mold and a molding rear mold, a molding insert is arranged on the second molding front mold, and the molding rear mold is respectively connected with the first molding front mold and the second molding front mold in sequence; the lateral demoulding component comprises a first demoulding component and a second demoulding component, a containing cavity is arranged between the first demoulding component and the second demoulding component, and the forming insert is positioned in the containing cavity. The utility model discloses a set up shaping subassembly and side direction drawing of patterns subassembly, thereby can be connected with first shaping front mould and second shaping front mould respectively in proper order through the shaping back mould, realize respectively the shaping operation to bottom plate and casing, through side direction drawing of patterns subassembly, drive the direction removal that the side direction drawing of patterns subassembly is to keeping away from double-colored shell when realizing that the back mould leaves the front mould, and remove double-colored shell by the manipulator, so, can realize not having thimble demolding, thereby still improved double-colored shell's appearance quality.

Description

Double-color injection mold
Technical Field
The utility model relates to an injection mold field especially relates to a double-colored injection mold.
Background
The injection mold is a tool for producing plastic products, and particularly relates to a method for injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and obtaining a product with a certain shape after cooling and solidification. However, most of the existing injection molds are single-color molds, that is, the products are made of only one material, and a double-color mold is needed for special products made of two plastic materials, wherein the double-color mold is formed by injecting two plastic materials on the same double-color injection molding machine in two times, but the products are only formed by demolding once, and the double-color products have high requirements on appearance and higher requirements on mold manufacturing technology.
As shown in fig. 1, a two-color housing 20 for automobile parts, the two-color housing 20 includes a bottom plate 21 and a housing 22, the housing 22 is disposed on the bottom plate 21, a groove is disposed in an inner cavity of the housing 22, the bottom plate 21 and the housing 22 are integrally formed, and the bottom plate 21 and the housing 22 are made of different plastic materials. Because the bicolor product adopts two kinds of plastics materials, so to the required ejecting dynamics when demolding different, and adopt the mode of thimble to eject the product, can cause the damage to the outward appearance of product.
Therefore, how to design a double-shot injection mold without a thimble structure, thereby ensuring the appearance quality of a product, is a problem that needs to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing a no thimble demolding to guarantee the appearance quality's of product double-color injection mold.
The purpose of the utility model is realized through the following technical scheme:
a two-shot injection mold comprising: the forming assembly comprises a first forming front die, a second forming front die and a forming rear die, wherein a forming insert is arranged on the second forming front die, and the forming rear die is respectively connected with the first forming front die and the second forming front die in sequence; the lateral demoulding assembly comprises a first demoulding part and a second demoulding part, the first demoulding part and the second demoulding part are respectively connected with the second moulding front mould in a sliding manner, and an accommodating cavity is arranged between the first demoulding part and the second demoulding part; when the first forming front mold and the forming rear mold are buckled with each other, the first forming front mold and the forming rear mold are used for forming the bottom plate, when the second forming front mold and the forming rear mold are buckled with each other, the forming insert is located in the accommodating cavity, the forming insert and the forming rear mold are used for forming the shell, and when the forming rear mold moves towards the direction away from the second forming front mold, the first demolding part and the second demolding part respectively move towards the direction away from the double-color shell.
In one embodiment, the first front mold includes a first front mold core, and the first front mold core is provided with a first molding groove.
In one embodiment, the second front mold further includes a second front mold core, and the molding insert is disposed on the second front mold core.
In one embodiment, the second molding front mold further includes a second fixing member, the second fixing member is provided with a second groove, and the second front mold core is disposed in the second groove.
In one embodiment, the rear molding die includes a rear die core, the rear die core is provided with a rear molding groove, when the first front molding die is fastened with the rear molding die, the rear molding groove and the first molding groove jointly form a molding cavity, and when the second front molding die is fastened with the rear molding die, the molding insert and the rear molding groove jointly form a molding cavity.
In one embodiment, the rear molding die further comprises a rear die fixing member, a fixing groove is formed in the rear die fixing member, and the rear die core is arranged on the fixing groove.
In one embodiment, the rear molding die further includes a first inclined guide rod and a wedge, the first inclined guide rod and the wedge are respectively disposed on the rear die fixing member, one end of the first inclined guide rod is slidably disposed on the first demolding member, and one surface of the first demolding member away from the molding insert is slidably connected to the wedge.
In one embodiment, the rear molding die further includes a second inclined guide rod and a tapered block, the second inclined guide rod and the tapered block are respectively disposed on the rear die fixing member, one end of the second inclined guide rod is slidably disposed on the second demolding member, and one surface of the second demolding member away from the molding insert is slidably connected to the tapered block.
In one embodiment, the first demolding part comprises a first slide rail and a first slide insert, the first slide rail is arranged on the second fixing part, the first slide insert is arranged on the first slide rail in a sliding manner, and one side of the first slide insert abuts against one side of the forming insert.
In one embodiment, the device further comprises a displacement assembly, wherein the displacement assembly comprises a displacement piece, and the displacement piece is used for driving the post-forming die to perform reciprocating displacement between the first pre-forming die and the second pre-forming die.
Compared with the prior art, the utility model discloses at least, following advantage has:
the utility model discloses a double-colored injection mold is through setting up shaping subassembly and side direction drawing of patterns subassembly, thereby can be connected with the shaping back mould through first shaping front mould, the realization is carried out shaping operation to the bottom plate of double-colored shell, be connected with the shaping back mould through second shaping front mould, the realization is carried out shaping operation to the casing of double-colored shell, first demoulding piece and second demoulding piece are taken off through setting up in the shaping both sides of inserting, the realization drives first demoulding piece and second demoulding piece and removes to the direction of keeping away from double-colored shell when the back mould leaves the front mould, remove double-colored shell by the manipulator at last, so, can realize not having thimble demolding, thereby the appearance quality of double-colored shell has still been improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of a two-color housing 20;
fig. 2 is a schematic structural view of a two-color injection mold according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the two-shot injection mold of FIG. 2;
fig. 4 is a schematic structural view of a lateral demolding assembly of the two-color injection mold in fig. 2.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Referring to fig. 1, 2, 3, and 4, a two-color injection mold 10 includes: the molding assembly 100 comprises a first molding front die 110, a second molding front die 120 and a molding rear die 130, wherein the second molding front die 120 is provided with a molding insert 121, and the molding rear die 130 is respectively connected with the first molding front die 110 and the second molding front die 120 in sequence; the lateral demoulding assembly 200 comprises a first demoulding part 210 and a second demoulding part 220, wherein the first demoulding part 210 and the second demoulding part 220 are respectively connected with the second moulding front mould 120 in a sliding way, and an accommodating cavity is arranged between the first demoulding part 210 and the second demoulding part 220; when the first front mold 110 and the rear mold 130 are fastened, the first front mold 110 and the rear mold 130 are used for molding the bottom plate 21, when the second front mold 120 and the rear mold 130 are fastened, the molding insert 121 is located in the accommodating cavity, the molding insert 121 and the rear mold 130 are used for molding the housing 22, and when the rear mold 130 moves away from the second front mold 120, the first demolding part 210 and the second demolding part 220 move away from the two-color housing 20, respectively.
It should be noted that the two-color housing 20 is made of two different materials, the material of the bottom plate 21 is TPU, the material of the housing 22 is PC + ABS, and the material is different, so the shrinkage rates of the bottom plate 21 and the housing 22 are different. Specifically, the two-color injection mold 10 needs to be used in cooperation with a two-color injection molding machine, the two-color injection molding machine has two sets of injection units, the first molding front mold 110 and the second molding front mold 120 are respectively connected with the two sets of injection units on the two-color injection molding machine, the first molding front mold 110 corresponds to the material of the bottom plate 21, and the second molding front mold 120 corresponds to the material of the housing 22; specifically, when the rear molding die 130 and the front second molding die 120 are fastened, the first demolding part 210 and the second demolding part 220 are located between the rear molding die 130 and the front second molding die 120, and a first receiving groove is formed in one side of the first demolding part 210 facing the molding insert 121, and similarly, a second receiving groove is formed in one side of the second demolding part 220 facing the molding insert 121, the first receiving groove and the second receiving groove are symmetrically arranged, and the first receiving groove and the second receiving groove jointly form a receiving cavity, and the molding insert 121 is located in the receiving cavity, so that a finished product can be left in the receiving cavity after the molding operation of the two-color housing 20 is completed.
Further, in this embodiment, the dual-color injection mold 10 further includes a displacement assembly, where the displacement assembly includes a displacement member, and the displacement member is configured to drive the rear molding die 130 to perform reciprocating displacement between the first front molding die 110 and the second front molding die 120, for example, the displacement member may adopt a translation mechanism; when performing the injection molding operation, the post-mold 130 moves to the first pre-mold 110 and is engaged with the first pre-mold 110, and the injection unit of the two-color injection molding machine injects the feed liquid to the first pre-mold 110 to complete the injection molding operation of the bottom plate 21, and after that, the bottom plate 21 remains in the post-mold 130; then, the molding rear mold 130 with the remaining bottom plate 21 moves in a direction away from the first molding front mold 110, moves to the second molding front mold 120 through the translation mechanism, and is buckled with the second molding front mold 120, an injection unit of the two-color injection molding machine injects liquid to the second molding front mold 120 to complete injection molding operation on the housing 22, and the bottom plate 21 and the housing 22 form an integral structure, so that two injection molding operations of the two-color injection molding mold 10 can be more consecutive and the integral structure is more compact through the translation mechanism; after the molding operation of the two-color housing 20 is completed, the rear molding die 130 moves in a direction away from the front second molding die 120, and simultaneously drives the first demolding part 210 and the second demolding part 220 to move in a direction away from the two-color housing 20 in the accommodating cavity, and after the first demolding part 210 and the second demolding part 220 move in place, the finished product of the two-color housing 20 can be taken away by the material taking manipulator.
In one embodiment, the first front mold 110 includes a first front mold insert 111, and the first front mold insert 111 has a first forming groove.
It should be noted that, in the present embodiment, the rear molding die 130 includes a rear die core 131, a rear molding groove is formed on the rear die core 131, when the front molding die 110 and the rear molding die 130 are fastened, the rear molding groove and the first molding groove together form a molding die cavity, and the molding die cavity is formed in the shape of the bottom plate 21. In addition, in the embodiment, the first front mold core 111 and the rear mold core 131 are respectively provided with two, so that two molding cavities forming the bottom plate 21 are provided, and two products can be obtained by injecting the material liquid once, so that the production efficiency of the products can be further improved.
Further, the second front mold 120 further includes a second front mold core 122, and the forming insert 121 is disposed on the second front mold core 122.
It should be noted that, similarly, when the second front molding die 120 is fastened to the rear molding die 130, the molding insert 121 and the rear molding groove together form a molding cavity, and meanwhile, two sides of the molding insert 121 respectively abut against the first demolding part 210 and the second demolding part 220, so that the product can be conveniently opened in a lateral direction, and the appearance quality of the product is ensured. Correspondingly, two forming inserts 121 and two second front mold cores 122 are also arranged, so that the production efficiency of the product can be improved.
In one embodiment, the second front mold 120 further includes a second fixing member 123, the second fixing member 123 is formed with a second groove, and the second front mold core 122 is disposed in the second groove.
It should be noted that the second fixing member 123 includes a second front mold base plate 123a, a second fixing plate 123b and a second front mold plate 123c, and the second front mold base plate 123a, the second fixing plate 123b and the second front mold plate 123c are respectively stacked in sequence; the second groove is formed in the second front mold plate 123c, and the second front mold 122 is fixed in the second front mold plate 123c, for example, the second front mold 122 may be fixed by screws or bolts, so that the second front mold 122 can be conveniently detached and repaired subsequently, thereby prolonging the service life of the mold. The second fixing member 123 is further provided with a pouring system and a cooling system, the terminal of the pouring system leads to each molding cavity, the second front mold base plate 123a and the second fixing plate 123b are further provided with a positioning ring and a sprue bush, the positioning ring is connected with the sprue bush, and the sprue bush is connected with a nozzle of an injection unit of the two-color injection machine, so that the nozzle, the sprue bush, the pouring system and the molding cavity are communicated to inject a material liquid into the molding cavity, the cooling system is respectively arranged on the second fixing plate 123b and the second front mold plate 123c and comprises a second front mold core 122 and a rear mold core 131 matched with the second front mold core 122, and the cooling system is used for cooling each part, so that the plastic liquid in a hot melting state can be solidified at an accelerated speed, and the service life of the mold is prolonged.
Similarly, the first front mold 110 further includes a first fixing member 112, the first fixing member 112 is provided with a first groove, the first front mold insert 111 is disposed in the first groove, the first fixing member 112 also includes a first front mold base plate, a first fixing plate and a first front mold plate, and the first front mold base plate, the first fixing plate and the first front mold plate are sequentially stacked. The first mold front 110 is provided with a cooling system and a gating system in the same manner as the second mold front 120, and is also provided in the same manner as the second mold front 120.
Further, in an embodiment, the rear molding die 130 further includes a rear die fixing member 132, a fixing groove is formed on the rear die fixing member, and the rear die core 131 is disposed on the fixing groove.
It should be noted that the rear mold fixing member 132 includes a rear mold seat plate 132a and a rear mold plate 132b, the rear mold seat plate 132a and the rear mold plate 132b are sequentially stacked, the fixing groove is formed in the rear mold plate 132b, and the rear mold core 131 is fixedly installed in the fixing groove, for example, the rear mold core 131 may be fixedly connected by using a screw or a bolt, so as to facilitate subsequent replacement of the rear mold core 131, thereby improving the service life of the mold.
In an embodiment, the rear molding die 130 further includes a first inclined guide rod 133 and a wedge 134, the first inclined guide rod 133 and the wedge 134 are respectively disposed on the rear die fixing member 132, one end of the first inclined guide rod 133 is slidably disposed on the first demolding member 210, and one side of the first demolding member 210 away from the molding insert 121 is slidably connected to the wedge 134.
It should be noted that the wedge 134 is disposed outside the rear molding die 130, for example, the wedge 134 may be mounted and fixed by using screws or bolts, and the first inclined guide rod 133 is disposed on the rear die fixing member 132 in an inclined manner, and one end of the first inclined guide rod 133 is slidably inserted into the first demolding member 210, and one side of the first demolding member 210, which is far away from the molding insert 121, is slidably connected to the wedge 134, so that, when the mold opening operation is performed, the rear molding die 130 moves in a direction far away from the second front molding die 120, and the first demolding member 210 is driven to move in a direction far away from the molding insert 121 along the first inclined guide rod 133 and the wedge 134.
Further, the rear molding die 130 further includes a second inclined guide rod 135 and a tapered block 136, the second inclined guide rod 135 and the tapered block 136 are respectively disposed on the rear die fixing member 132, one end of the second inclined guide rod 135 is slidably disposed on the second demolding member 220, and one surface of the second demolding member 220 away from the molding insert 121 is slidably connected to the tapered block 136.
It should be noted that the second inclined guide rod 135 and the tapered block 136 are respectively disposed on the rear mold fixing element 132, for example, the tapered block 136 may be mounted and fixed by using a screw or a bolt, so that subsequent detachment and replacement may be facilitated, the second inclined guide rod 135 is also obliquely disposed on the rear mold fixing element 132, and one end of the second inclined guide rod 135 is slidably disposed on the second demolding element 220, so that, when the mold opening operation is performed, the rear molding die 130 moves in a direction away from the second front molding die 120, and meanwhile, the second demolding element 220 is driven to move in a direction away from the molding insert 121 along the second inclined guide rod 135 and the tapered block 136.
Further, in order to improve the production efficiency, two molding cavities are provided, and similarly, two sets of the first demolding part 210 and the second demolding part 220 are provided, two sets of the first inclined guide rod 133 and the wedge block 134 are provided, and two sets of the second inclined guide rod 135 are provided, so that the mold structure is more compact, one conical block 136 is provided, two sides of the conical block 136 are respectively provided with a guide inclined plane, and the guide inclined planes on the two sides are respectively abutted against the two second demolding parts 220, thereby meeting the requirement of mold opening action.
In one embodiment, the first stripping element 210 includes a first slide rail and a first slide insert 212, the first slide rail is disposed on the second fixing element 123, the first slide insert 212 is slidably disposed on the first slide rail, and one side of the first slide insert 212 abuts against one side of the forming insert 121.
It should be noted that the first demolding part 210 further includes a first return spring, one end of the first return spring is connected to the first sliding insert 212, and the other end of one end of the first return spring is connected to the second front mold core 122, when the mold opening operation is performed, the first sliding insert 212 moves on the first sliding rail, and after the mold opening operation is completed, the first sliding insert 212 is reset by the first return spring. Similarly, the second stripping element 220 includes a second slide rail 221 and a second slide insert 222, the second slide rail is slidably disposed on the second fixing element 123, and the second slide insert 222 is slidably disposed on the second slide rail 221.
In an embodiment, the double-color injection mold 10 further includes a guiding and positioning structure, the guiding and positioning structure includes a plurality of guiding rods and guiding sleeves, each guiding sleeve is respectively disposed on the second fixing member 123 and the rear mold fixing member 132, the guiding rods respectively slide on the guiding sleeves, when the second molding front mold 120 and the molding rear mold 130 perform opening and closing motions, the guiding rods slide along the guiding sleeves, and meanwhile, the guiding sleeves can also play a role in preventing abrasion. In this embodiment, the direction and location structure are provided with four groups, and four groups of direction and location structure set up respectively in four angular regions of double-shot moulding mould 10, so, can improve the stability that the front and back mould opened and shut to further improve the appearance quality of product.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A two-color injection mold, comprising:
the forming assembly comprises a first forming front die, a second forming front die and a forming rear die, wherein a forming insert is arranged on the second forming front die, and the forming rear die is respectively connected with the first forming front die and the second forming front die in sequence; and
the lateral demoulding assembly comprises a first demoulding part and a second demoulding part, the first demoulding part and the second demoulding part are respectively connected with the second forming front mould in a sliding manner, and an accommodating cavity is arranged between the first demoulding part and the second demoulding part;
when the first forming front die and the forming rear die are buckled with each other, the first forming front die and the forming rear die are used for forming the bottom plate, when the second forming front die and the forming rear die are buckled with each other, the forming insert is located in the containing cavity, the forming insert and the forming rear die are used for forming the shell, when the forming rear die moves towards the direction far away from the second forming front die, the first demolding part and the second demolding part respectively move towards the direction far away from the double-color shell.
2. The dual-color injection mold according to claim 1, wherein the first front mold comprises a first front mold core, and the first front mold core is provided with a first molding groove.
3. The dual-color injection mold of claim 2, wherein the second molding front mold further comprises a second front mold core, and the molding insert is disposed on the second front mold core.
4. The two-shot injection mold of claim 3, wherein the second molding front mold further comprises a second fixture, the second fixture having a second groove formed therein, the second front mold insert being disposed in the second groove.
5. The dual-color injection mold according to claim 4, wherein the rear molding die comprises a rear die core, a rear molding groove is formed in the rear die core, the rear molding groove and the first molding groove jointly form a molding cavity when the first front molding die and the rear molding die are buckled, and the molding insert and the rear molding groove jointly form a molding cavity when the second front molding die and the rear molding die are buckled.
6. The two-color injection mold according to claim 5, wherein the rear mold further comprises a rear mold fixing member, the rear mold fixing member is provided with a fixing groove, and the rear mold core is disposed on the fixing groove.
7. The bi-color injection mold according to claim 6, wherein the rear molding mold further comprises a first inclined guide rod and a wedge, the first inclined guide rod and the wedge are respectively disposed on the rear mold fixing member, one end of the first inclined guide rod is slidably disposed on the first demolding member, and one surface of the first demolding member away from the molding insert is slidably connected to the wedge.
8. The double-shot injection mold of claim 6 or 7, wherein the molding back mold further comprises a second inclined guide rod and a tapered block, the second inclined guide rod and the tapered block are respectively disposed on the back mold fixing member, one end of the second inclined guide rod is slidably disposed on the second demolding member, and one surface of the second demolding member away from the molding insert is slidably connected to the tapered block.
9. The two-shot injection mold of claim 7, wherein the first stripper comprises a first slide rail and a first slide insert, the first slide rail is disposed on the second fixture, the first slide insert is slidably disposed on the first slide rail, and one side of the first slide insert abuts one side of the forming insert.
10. The dual-color injection mold of any one of claims 1-7, further comprising a displacement assembly, wherein the displacement assembly comprises a displacement member, and the displacement member is configured to drive the post-mold to perform a reciprocating displacement between the first pre-mold and the second pre-mold.
CN202222383159.9U 2022-09-07 2022-09-07 Double-color injection mold Active CN218519052U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222383159.9U CN218519052U (en) 2022-09-07 2022-09-07 Double-color injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222383159.9U CN218519052U (en) 2022-09-07 2022-09-07 Double-color injection mold

Publications (1)

Publication Number Publication Date
CN218519052U true CN218519052U (en) 2023-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222383159.9U Active CN218519052U (en) 2022-09-07 2022-09-07 Double-color injection mold

Country Status (1)

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CN (1) CN218519052U (en)

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