Mold structure capable of automatically dropping off injection-molded plastic heads

Abstract

The utility model relates to mould technical field especially relates to a mould structure capable of automatic falling injection plastics head. It includes upper die and lower die who sets up correspondingly up and down, and forms injection cavity between upper die and lower die, and upper die includes front plate, the stripper plate who is connected with front plate bottom surface through stripper plate pull rod, and the female die plate who is connected with front plate through small pull rod, and the stripper plate placing groove who is used to install stripper plate is seted up on female die plate upper surface. The utility model has the advantages that: after the injection of this technical scheme, the male die plate retreats, the front plate and the female die plate open, the stripper plate pull rod forces the stripper plate to separate from the female die plate, the sprue is pulled out by the stripper plate from the female die plate and falls automatically, the male die plate continues to retreat and separates from the female die plate, and the product is ejected and taken out, the flow channel structure is pulled out by the pulling plate, and after the injection is completed, it falls automatically, which simplifies the mould and avoids increasing manpower to take the flow channel or increasing the process of taking the flow channel by the mechanical hand.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold structure that can automatically drop the injection head. Background Technology

[0002] After injection molding is completed, the molded product needs to be removed from the mold plate. Previously, the moving mold and the fixed mold were separated manually, the molded product was removed, and then the mold was put back in place. This was cumbersome and affected production efficiency.

[0003] The prior art, 2014105250499, describes an automatic ejection mechanism for injection molds. Although the molds in the prior art can disconnect the injection head, they cannot automatically eject the material from the mold and cannot achieve fully autonomous ejection. In order to complete injection and ejection in one go, no secondary manual operation is required.

[0004] Therefore, it is necessary to design a mold structure that can automatically drop the injection head to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a mold structure that can automatically drop the injection head, so as to overcome the above-mentioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mold structure capable of automatically dropping an injection head includes an upper mold and a lower mold arranged vertically. The lower mold and the upper mold are installed together by guide pillars and guide sleeves. An injection cavity is formed between the upper mold and the lower mold. The upper mold is provided with a sprue and a runner. The sprue and the runner are interconnected and connected to the injection cavity. The sprue is located inside the front plate. One end of the runner is connected to the sprue and passes through a stripper plate and a mother mold plate, and is connected to the injection cavity. The upper mold includes a front plate, a stripper plate connected to the bottom surface of the front plate by a stripper plate pull rod, and a mother mold plate connected to the front plate by a small pull rod. The upper surface of the mother mold plate has a stripper plate placement groove for installing the stripper plate. A stripper groove is formed on the stripper plate, and the stripper groove is interconnected with the runner.

[0008] Preferably, an ejector mechanism is provided at the bottom of the injection molding cavity. The ejector mechanism is placed inside the moving template and the male template, and the ejector of the ejector structure is ejected out of the injection molding cavity after the ejector is ejected.

[0009] Preferably, the lower mold includes a base plate, a movable template disposed on the base plate, and a male template disposed on the movable template.

[0010] Preferably, an opening / closing device is provided on the male template, and an opening / closing device slot for the opening / closing device to be inserted is provided on the female template opposite to the opening / closing device.

[0011] The beneficial effects of this utility model are as follows: After injection molding is completed, the male mold plate retracts, the front plate and the female mold plate open, the stripper plate pull rod forces the stripper plate to detach from the female mold plate, the sprue head is pulled out of the female mold plate by the stripper plate and falls automatically, the male mold plate continues to retract and separate from the female mold plate, then the product is ejected and taken out, the runner structure is pulled out by the pull plate, so that the fine sprue runner falls automatically after injection molding, which simplifies the mold and avoids the need to add manual or robotic arms to remove the runner. Without increasing costs, and without the need for manual labor or robotic arms, the sprue head can fall automatically. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the first step of mold closing for a mold structure capable of automatically dropping the injection head according to this utility model;

[0013] Figure 2 This is a schematic diagram of the second step of mold closing for a mold structure capable of automatically dropping the injection head according to this utility model;

[0014] Figure 3 This is a schematic diagram of the first step of mold opening for a mold structure capable of automatically dropping the injection head according to this utility model;

[0015] Figure 4 This is a schematic diagram of the second step of mold opening for a mold structure capable of automatically dropping the injection head according to this utility model;

[0016] Figure 5 This is a schematic diagram of the mold opening process for a mold structure capable of automatically dropping the injection head according to the present invention.

[0017] Figure 6 This is a schematic diagram of the ejector plate ejector structure of a mold structure capable of automatically dropping the injection head, according to the present invention.

[0018] In the diagram: 1. Upper mold; 2. Lower mold; 11. Front plate; 12. Stripper plate tie rod; 13. Stripper plate; 17. Small tie rod; 14. Female mold plate; 15. Stripper plate placement slot; 131. Stripper groove; 16. Stretching space groove; 21. Base plate; 22. Moving mold plate; 23. Male mold plate; 3. Injection cavity; 4. Ejector mechanism; 5. Opener / closer; 51. Opener / closer groove; 6. Sprue; 7. Injection part; 8. Gating gate; 9. Runner. Detailed Implementation

[0019] Reference Figures 1 to 6A mold structure capable of automatically dropping the injection head includes an upper mold 1 and a lower mold 2 arranged vertically and vertically, wherein the lower mold and the lower mold 2 are installed together by guide pillars and guide sleeves.

[0020] The upper mold includes a front plate 11, a stripping plate 13 connected to the bottom surface of the front plate via a stripping plate tie rod 12, and a mother mold 14 connected to the front plate via a small tie rod;

[0021] The upper surface of the mother template is provided with a stripper plate placement groove 15 for installing the stripper plate; after the mold is closed, the stripper plate is placed in the stripper plate placement groove, completely filling the entire stripper plate placement groove, and the upper surface of the stripper plate is in close contact with the bottom surface of the front plate. In order to allow the sprue to automatically detach from the stripper plate, a stripper groove 131 is provided on the stripper plate, and the stripper groove is connected to the flow channel, so that the injection plastic can move along the flow channel to the stripper groove and then detach from the mold from the stripper groove;

[0022] The mother template is provided with a stretching space groove 16 for cooperating with the stretching of the stripper plate pull rod; it is used to accommodate the stretching and retracting of the stripper plate pull rod, providing space for movement and storage;

[0023] The lower mold 2 includes a base plate 21, a movable template 22 disposed on the base plate, and a male template 23 disposed on the movable template;

[0024] The male mold plate and the female mold plate form an injection cavity 3. The upper mold is provided with a gating port 8 and a runner 9. The gating port 8 and the runner 9 are connected to each other and to the injection cavity. The gating port is placed in the front plate. One end of the runner is connected to the gating port and passes through the stripper plate and the female mold plate to be connected to the injection cavity.

[0025] An ejector mechanism 4 is provided at the bottom of the injection molding cavity. The ejector mechanism is placed inside the moving template and the male template, and the ejector of the ejector structure is ejected out of the injection molding cavity after the ejector is ejected.

[0026] An opener / closer 5 is provided on the male template, and an opener / closer slot 51 for the opener / closer to be inserted is provided on the female template directly opposite the opener / closer.

[0027] In this implementation case, the mold closing process is as follows: the ejector mechanism 4 returns to its original position, the moving mold plate 22 moves forward, and after the opening and closing device touches the female mold plate, the opening and closing device will push the female mold plate forward. The moving mold core and the opening and closing device continue to push the female mold plate, forcing the stripper plate to return to its original position; the male mold core and the opening and closing device continue to push the female mold plate, forcing the front plate to return to its original position; the male mold core and the opening and closing device continue to push the female mold plate, forcing the male mold plate and the female mold plate to close, and the mold closing process is completed.

[0028] Mold opening process: After injection molding is completed, the moving mold plate retracts. Under the action of the opening and closing device, the moving mold plate pulls the female mold plate back, separating the female mold plate and the front plate by a distance A. At the same time, the sprue head detaches from the front plate. The moving mold plate and the female mold plate continue to retract. After retracting a distance B, the stripper pull rod pulls the stripper plate to detach from the female mold plate. At the same time, the sprue head 6 of the runner is pulled out from the female mold plate. After the runner detaches from the female mold plate, it falls automatically. The moving mold plate continues to retract, and the small pull rod pulls the opening and closing device between the male and female mold plates, causing the female and male mold plates to open. After the moving mold plate and the female mold plate open, the ejector pin ejects the injection molded part 7, the product is removed, and the mold opening process is completed.

[0029] The advantages of this utility model are that after injection molding is completed, the male mold plate retracts, the front plate and the female mold plate open, the stripper plate pull rod forces the stripper plate to detach from the female mold plate, the sprue head is pulled out of the female mold plate by the stripper plate and falls automatically, the male mold plate continues to retract and separate from the female mold plate, then the product is ejected and taken out, the runner structure is pulled out by the pull plate, so that the fine sprue runner falls automatically after injection molding, which simplifies the mold and avoids the need to add manual or robotic arms to remove the runner. Without increasing costs, and without the need for manual labor or the addition of robotic arms, the sprue head can fall automatically.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mold structure capable of automatically dropping an injection head, comprising an upper mold and a lower mold arranged correspondingly above and below each other, the lower mold and the upper mold being installed together by guide pillars and guide sleeves, forming an injection cavity between the upper mold and the lower mold, the upper mold having a gating gate and a runner, the gating gate and the runner being interconnected and connected to the injection cavity, the gating gate being located within a front plate, one end of the runner being connected to the gating gate, and simultaneously penetrating through a stripper plate and a mother mold plate to be connected to the injection cavity, characterized in that: The upper mold includes a front plate, a stripper plate connected to the bottom surface of the front plate via a stripper plate tie rod, and a mother template connected to the front plate via a small tie rod. The upper surface of the mother template is provided with a stripper plate placement groove for installing the stripper plate. A stripper groove is provided on the stripper plate, and the stripper groove is connected to the flow channel.

2. The mold structure capable of automatically dropping the injection head according to claim 1, characterized in that: An ejector mechanism is provided at the bottom of the injection molding cavity. The ejector mechanism is placed inside the moving template and the male template, and the ejector of the ejector structure is ejected out of the injection molding cavity after the ejector is ejected.

3. The mold structure capable of automatically dropping the injection head according to claim 1, characterized in that: A stretching space groove is provided on the mother template for cooperating with the stretching of the stripper plate tie rod.

4. The mold structure capable of automatically dropping the injection head according to claim 1, characterized in that: The lower mold includes a base plate, a movable template disposed on the base plate, and a male template disposed on the movable template.

5. The mold structure capable of automatically dropping the injection head according to claim 1, characterized in that: An opener / closer is provided on the male template, and an opener / closer slot for the opener / closer to be inserted is provided on the female template directly opposite the opener / closer.

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