A secondary mold opening structure and injection mold facilitating the removal of sprues

Abstract

The utility model discloses a secondary mold opening structure and injection mold convenient to take out material head, including fixed mode, fixed mode includes the panel of setting from top to bottom in proper order, hot runner board, stripping plate and has the fixed mode board of fixed mode ren, still include the floating plate of setting between stripping plate and fixed mode board, the shovel of floating plate is provided with, and the slider of fixed mode board is provided with and can extend into the cavity of injection mold, and shovel and slider cooperate to make the slider away from or extend into the cavity, and there is PL1 parting surface between floating plate and fixed mode board to make the shovel slide in the slider to the stripping plate direction and gradually away from it, and there is PL2 parting surface between floating plate and stripping plate to pull out the material head formed after injection molding from the cavity, so can set up the shovel on the floating plate to avoid the shovel to interfere with the manipulator to take out the material head.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a secondary mold opening structure and injection mold that facilitates the removal of the sprue. Background Technology

[0002] A typical injection mold's fixed mold section includes a panel, hot runner plate, stripper plate, and fixed mold plate arranged in sequence. A slider with sliding holes is located at the bottom of the fixed mold plate. A scraper is fixed to the stripper plate, and the scraper slides into the inner wall of the sliding hole. During mold opening, the stripper plate moves the scraper away from the fixed mold plate, causing it to slide out of the sliding hole. Simultaneously, the slider moves horizontally outward to complete the stripping action. However, the stripper plate has a runner structure. Therefore, the sprue formed on the runner is surrounded by the scrapers located on the stripper plate. This causes mechanical interference with the removal of the sprue by a robotic arm, requiring manual removal, which severely impacts production efficiency and increases labor costs. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a secondary mold opening structure and injection mold that facilitates the removal of the material head. By placing the shovel on a floating plate, the shovel can be prevented from interfering with the robot arm's removal of the material head.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: This utility model provides a secondary mold opening structure for easy removal of the sprue, including a fixed mold. The fixed mold includes a panel, a hot runner plate, a stripper plate, and a fixed template with a fixed mold core arranged sequentially from top to bottom. It also includes a floating plate disposed between the stripper plate and the fixed template. The floating plate is equipped with a scraper, and the fixed template is equipped with a slider that can extend into the cavity of the injection mold. The scraper and the slider cooperate to move the slider away from or into the cavity. There is a PL1 parting surface between the floating plate and the fixed template so that the scraper slides in the slider toward the stripper plate and gradually moves away from it. There is a PL2 parting surface between the floating plate and the stripper plate to pull the sprue formed after injection molding out of the cavity.

[0005] Furthermore, the fixed mold plate has a first clearance window for accommodating the shovel, and the fixed mold core has a second clearance window that communicates with the first clearance window and is also used to accommodate the shovel; the slider has an inclined guide groove that cooperates with the shovel and extends through it, and the shovel is movably disposed through the first clearance window, the second clearance window, and the inclined guide groove; the shovel slides against the inner wall of the inclined guide groove so that the slider can switch between positions extending into or away from the cavity.

[0006] Furthermore, the floating plate has a third clearance window to accommodate the flow channel of the injection mold, so that the flow channel can be movably inserted through the third clearance window.

[0007] Furthermore, a limiting component is provided between the floating plate and the stripping plate to ensure that there is a minimum safe distance between them.

[0008] Furthermore, a buffer spring is provided between the floating plate and the fixed template.

[0009] Furthermore, a PL3 parting surface is provided between the hot runner plate and the stripper plate.

[0010] This utility model provides an injection mold, which includes at least the above-mentioned secondary mold opening structure that facilitates the removal of the sprue.

[0011] The technical solution provided by this utility model has the following beneficial effects: By mounting the shovel on the floating plate to avoid the material head on the stripper plate, the shovel is prevented from interfering with the robot arm's removal of the material head. Therefore, the material head can be removed by a robot, which effectively ensures production efficiency and reduces labor costs. Attached Figure Description

[0012] Figure 1 The figure shown is a cross-sectional view of the secondary mold opening structure in Embodiment 1, which facilitates the removal of the material head. Detailed Implementation

[0013] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and 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 drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0014] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0015] Example 1 Reference Figure 1 Embodiment 1 provides a secondary mold opening structure (hereinafter referred to as secondary mold opening structure) that facilitates the removal of the material head. It includes a fixed mold 100, and the fixed mold 100 specifically includes a panel 5, a hot runner plate 4, a stripper plate 3, a floating plate 2 and a fixed template 1 with a fixed mold core 12 arranged from top to bottom. Multiple buffer springs are provided between the floating plate 2 and the fixed template 1.

[0016] The floating plate 2 is fixedly equipped with multiple scrapers 21, and the fixed template 1 is equipped with multiple sliders 11 that can extend laterally into the cavity of the injection mold, and each scraper 21 corresponds to one slider 11.

[0017] More specifically, the fixed mold plate 1 has multiple first clearance windows for accommodating each shovel 21, the fixed mold core 12 has multiple second clearance windows that connect to each of the first clearance windows and are used to accommodate each shovel 21, and the floating plate 2 has a third clearance window for accommodating the runner of the injection mold, so that the runner can be movably inserted through the third clearance window and extend into the fixed mold core 12.

[0018] Each slider 11 has an inclined guide groove (i.e. a sliding groove hole) that cooperates with the corresponding scraper 21 and penetrates its upper and lower surfaces. The lower end of each scraper 21 away from the floating plate 2 is movably inserted into the corresponding first clearance window, second clearance window and inclined guide groove. The scraper 21 slides against the inner wall of the inclined guide groove so that the slider 11 can switch between extending into or away from the cavity. In this way, the ejection action of the injection mold can be completed.

[0019] Furthermore, there is a PL1 parting surface between the floating plate 2 and the fixed platen 1, so that the shovel 21 slides in the slider 11 toward the stripper plate 3 and gradually moves away from it. There is a PL2 parting surface between the floating plate 2 and the stripper plate 3, so as to pull the sprue formed after injection molding out of the cavity, and there is a PL3 parting surface between the hot runner plate 4 and the stripper plate 3.

[0020] When the mold is opened, the PL1 parting surface is pulled open first so that the floating plate 2 and the scraper 21 gradually move away from the fixed platen 1 together and complete the stripping action. Then the PL2 parting surface and the PL3 parting surface are pulled open. At this time, each scraper 21 avoids the material removal outlet space of the material head on the stripping plate 3. In this way, the material head can be removed sideways by the robot arm.

[0021] In summary, by mounting the shovel 21 on the floating plate 2 to avoid the material head on the stripper plate 3, the shovel 21 can avoid interfering with the robot arm in removing the material head. Therefore, the material head can be removed by the robot, which effectively ensures production efficiency and reduces labor costs.

[0022] In a further preferred embodiment, a limiting component is provided between the floating plate 2 and the stripping plate 3, specifically a limiting screw, to ensure that there is a minimum safe distance between the floating plate 2 and the stripping plate 3.

[0023] Example 2 Example 2 provides an injection mold that includes at least the secondary mold opening structure of Example 1.

[0024] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A secondary mold opening structure for easy removal of the sprue, comprising a fixed mold, wherein the fixed mold includes a panel, a hot runner plate, a stripper plate, and a fixed mold plate having a fixed mold core arranged sequentially from top to bottom, characterized in that: It also includes a floating plate disposed between the stripping plate and the fixed template; The floating plate is equipped with a shovel, and the fixed platen is equipped with a slider that can extend into the cavity of the injection mold. The shovel and the slider cooperate to move the slider away from or into the cavity. The floating plate and the fixed template have a PL1 parting surface, so that the shovel slides in the slider toward the stripper plate and gradually moves away from it; The floating plate and the stripper plate have a PL2 parting surface to pull the sprue formed after injection molding out of the cavity.

2. The secondary mold opening structure for easy removal of the material head according to claim 1, characterized in that: The fixed mold plate has a first clearance window for accommodating the shovel, and the fixed mold core has a second clearance window that communicates with the first clearance window and is also used to accommodate the shovel. The slider has an inclined guide groove that cooperates with the shovel and extends through it. The shovel is movably inserted through the first clearance window, the second clearance window, and the inclined guide groove. The shovel slides against the inner wall of the inclined guide groove so that the slider can switch between positions that extend into or away from the cavity.

3. The secondary mold opening structure for easy removal of the material head according to claim 1, characterized in that: The floating plate has a third clearance window to accommodate the flow channel of the injection mold, so that the flow channel can be movably inserted through the third clearance window.

4. The secondary mold opening structure for easy removal of the material head according to any one of claims 1-3, characterized in that: Limiting elements are provided between the floating plate and the stripping plate to ensure that there is a minimum safe distance between them.

5. The secondary mold opening structure for easy removal of the material head according to any one of claims 1-3, characterized in that: A buffer spring is provided between the floating plate and the fixed template.

6. The secondary mold opening structure for easy removal of the material head according to any one of claims 1-3, characterized in that: The hot runner plate and the stripper plate have a PL3 parting surface.

7. An injection mold, characterized in that: It includes at least the secondary mold opening structure as described in any one of claims 1-6 that facilitates the removal of the material head.

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