Intra-mold gate cutting injection molding mold

Abstract

The utility model discloses an in-mold gate cutting injection molding mold, which comprises an inner mold and an outer mold frame, the outer mold frame is sleeved outside the inner mold, the inner mold is provided with a side gate, a lifting sliding cavity is arranged in the inner mold, the lifting sliding cavity is communicated with the side gate through a plate slotted hole, a sliding block is arranged in the lifting sliding cavity, and a cutting plate is arranged at the upper part of the sliding block. The cutting plate is arranged in the plate groove hole in a penetrating mode, an elastic piece is arranged on the lower portion of the sliding block, a linkage clamping plate is fixedly connected to the side face of the sliding block, and the outer end of the linkage clamping plate is detachably connected with the outer mold frame through a vertical strip hole. According to the in-mold gate cutting injection molding mold provided by the utility model, when the inner mold is separated from the outer mold frame, the side gate part can be automatically cut off, so that the subsequent manual gate cutting procedure is omitted, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an in-mold gate injection molding die. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it involves injecting molten plastic into a mold cavity under high pressure using an injection molding machine, followed by cooling and solidification to obtain the molded product.

[0003] Molten plastic is injected into the mold cavity through the gate of the injection mold. After the molten plastic cools, the plastic in the gate is connected to the product in the mold cavity. The mold is opened to unload the product. Then, the operator manually cuts the connection between the gate and the product with scissors to separate the product from the gate. However, cutting the gate manually is labor-intensive, time-consuming, and inefficient. Summary of the Invention

[0004] The purpose of this utility model is to provide an in-mold gate injection molding die, including an inner mold and an outer mold frame. The outer mold frame is sleeved outside the inner mold. The inner mold has a side gate. The inner mold has a lifting slide cavity with a plate groove hole that communicates with the side gate. A slider is movably mounted inside the lifting slide cavity. The upper part of the slider has a cutting plate for cutting off the side gate, which passes through the plate groove hole. The lower part of the slider has an elastic element. A linkage plate is fixedly connected to the side of the slider. A vertical strip hole is opened on the side of the lifting slide cavity. The outer end of the linkage plate is detachably connected to the outer mold frame through the vertical strip hole.

[0005] Preferably, the cutting plate is fitted into the slot hole of the plate, and the top surface of the cutting plate is flush with the runner of the side gate.

[0006] Preferably, the inner side of the outer mold frame is provided with a slot, the bottom of the slot is open, and the outer end of the linkage plate is engaged with the slot.

[0007] Preferably, the inner mold includes a left mold and a right mold, which are joined together to form a mold cavity for injection molding products, and the side gate communicates with the mold cavity.

[0008] Preferably, the elastic element is a vertical compression spring.

[0009] The advantages and beneficial effects of this utility model are as follows: It provides an in-mold gate injection molding die that can automatically cut off the side gate portion when the inner mold and outer mold frame are separated, eliminating the need for subsequent manual gate cutting process and improving production efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0011] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0012] The specific technical solution of this utility model is as follows:

[0013] like Figure 1 As shown, an in-mold gate injection molding die includes an inner mold 1 and an outer mold frame 2. The outer mold frame 2 is sleeved outside the inner mold 1. The inner mold 1 is provided with a side gate 3. The inner mold 1 is provided with a lifting slide cavity 4. The lifting slide cavity 4 is provided with a plate groove hole 5, which is connected to the side gate 3. A slider 6 is movably provided in the lifting slide cavity 4. The upper part of the slider 6 is provided with a cutting plate 7 for cutting off the side gate 3. The cutting plate 7 passes through the plate groove hole 5. The lower part of the slider 6 is provided with an elastic element 8. A linkage plate 9 is fixedly connected to the side of the slider 6. A vertical strip hole 10 is opened on the side of the lifting slide cavity 4. The outer end of the linkage plate 9 is detachably connected to the outer mold frame 2 through the vertical strip hole 10.

[0014] The cutting plate 7 is fitted into the plate slot 5, and the top surface of the cutting plate 7 is flush with the runner 31 of the side gate 3. Specifically, after the inner mold 1 and the outer mold frame 2 are closed, the cutting plate 7 is fitted into the plate slot 5, and the top surface of the cutting plate 7 is flush with the runner 31 of the side gate 3, so as to avoid the cutting plate 7 blocking the runner 31 of the side gate 3.

[0015] The inner side of the outer mold frame 2 is provided with a slot 11, the bottom of the slot 11 is open, and the outer end of the linkage plate 9 is engaged with the slot 11. Specifically, when the inner mold 1 and the outer mold frame 2 are closed, the outer end of the linkage plate 9 is engaged into the slot 11 from the open. The outer mold frame 2 drives the slider 6 to move downward through the linkage plate 9. The slider 6 drives the cutting plate 7 to move downward, and the elastic element 8 is compressed by force.

[0016] The inner mold 1 described above includes a left mold 12 and a right mold 13. The left mold 12 and the right mold 13 are joined together to form a mold cavity 14 for injection molding products. The side gate 3 is connected to the mold cavity 14.

[0017] The aforementioned elastic element 8 is a vertical compression spring.

[0018] In use, the outer mold frame 2 is fitted onto the outside of the inner mold 1 from top to bottom. During the mold closing process, the outer end of the linkage plate 9 is inserted into the slot 11 from the open opening at the bottom of the outer mold frame 2. When the outer mold frame 2 moves downward, the outer mold frame 2 drives the slider 6 to move downward through the linkage plate 9. The slider 6 drives the cutting plate 7 to move downward, and the elastic element 8 is compressed by force. After the mold is closed, the mold cavity 14 is injection molded through the side gate 3 to complete the filling molding.

[0019] When the mold is opened, the outer mold frame 2 is separated from the inner mold 1 from bottom to top. Under the pressure of the outer mold frame 2, the elastic element 8 in the lifting slide cavity 4 pushes the slider 6 upward. The slider 6 drives the cutting plate 7 to move upward. The side gate 3 is cut off by the cutting plate 7 and separated from the product (cutting off the side gate 3), eliminating the need for subsequent manual gate cutting process and improving production efficiency.

[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An in-mold gate injection molding die, comprising an inner mold and an outer mold frame, wherein the outer mold frame is sleeved outside the inner mold, and the inner mold is provided with a side gate, characterized in that: The inner mold is provided with a lifting slide cavity, and the lifting slide cavity is provided with a plate groove hole. The plate groove hole is connected to the side gate. A slider is movably provided in the lifting slide cavity. The upper part of the slider is provided with a cutting plate for cutting off the side gate. The cutting plate passes through the plate groove hole. The lower part of the slider is provided with an elastic element. A linkage plate is fixedly connected to the side of the slider. The side of the lifting slide cavity is provided with a vertical strip hole. The outer end of the linkage plate is detachably connected to the outer mold frame through the vertical strip hole.

2. The in-mold gate injection molding die according to claim 1, characterized in that, The cutting plate is fitted into the slot hole of the plate, and the top surface of the cutting plate is flush with the runner of the side gate.

3. The in-mold gate injection molding die according to claim 2, characterized in that, The inner side of the outer mold frame is provided with a slot, the bottom of the slot is open, and the outer end of the linkage plate is engaged with the slot.

4. The in-mold gate injection molding die according to claim 3, characterized in that, The inner mold includes a left mold and a right mold, which are joined together to form a mold cavity for injection molding products, and the side gate is connected to the mold cavity.

5. The in-mold gate injection molding die according to claim 4, characterized in that, The elastic element is a vertical compression spring.

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