Anti-sticking quick demolding mechanism for injection mold

Abstract

The utility model discloses an anti-sticking quick demoulding mechanism of an injection mould, and relates to the technical field of safety helmet production, the anti-sticking quick demoulding mechanism comprises a static mould base and a quick demoulding assembly, the quick demoulding assembly is arranged in the static mould base, and the quick demoulding assembly comprises an air cavity, a high-pressure air pump, an ejector pin bottom plate, an ejector rod, a demoulding ejector pin, an air blocking pipe and a spring. When the anti-sticking quick demolding mechanism for the injection mold is used, a positioning ring at the top of a movable mold base is used for being connected with an extrusion mold head, molten plastic enters a branch runner through a sprue and finally enters a corresponding double-station injection molding cavity, and the double-station injection molding cavity corresponds to forming male molds on the two sides of a static mold base; batch injection molding production of multiple safety helmets can be achieved at the same time, the operation efficiency is improved, in addition, the guide sleeve at one end of the movable mold base is in positioning fit with the guide column at one end of the static mold base, the mold closing stroke of the movable mold base and the static mold base is limited and guided, and product forming failure caused by mold cavity dislocation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of helmet production, in particular to an anti-sticking rapid demoulding mechanism for an injection mold. Background Art

[0002] A safety helmet is a protective component for the head, and is often used in factory workshops and outdoor construction sites. In order to ensure the safety of workers' heads, high-strength resin materials are mostly used in the material selection, and injection molding is mostly used in the molding process. Therefore, matching injection molds are required for production.

[0003] However, the existing helmet mold has the problem of poor demoulding function. When the mold needs to be demoulded, the staff needs to manually peel off the helmet, and the helmet will stick to the mold, resulting in the quality of the helmet cannot be guaranteed.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an anti-sticking and quick demoulding mechanism for injection molds is proposed. Utility Model Content

[0005] The utility model aims to provide an anti-sticking and quick demoulding mechanism for an injection mold to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-sticking quick demolding mechanism for an injection mold, comprising a static mold base and a quick demolding component, a quick demolding component is arranged inside the static mold base, the quick demolding component comprises an air cavity, a high-pressure air pump, an ejector base plate, an ejector rod, a demolding ejector, an air blocking pipe and a spring, the air cavity is externally connected to a high-pressure air pump, and an ejector base plate is slidably installed inside the air cavity, the bottom plane of the ejector base plate is fixedly connected to the ejector rod output end, and demolding ejectors are fixedly connected to both sides of the top of the ejector base plate, the middle end of the top of the ejector base plate is fixedly connected to the air blocking pipe, and a spring is sleeved on the middle of the air blocking pipe.

[0007] Furthermore, the air cavity is opened in the middle of the static mold seat, and the channel opening of the air cavity is flush with the top plane of the static mold seat. The air cavity is connected to the high-pressure air pump on one hand, and is connected to the conical opening of the top channel on the other hand.

[0008] Furthermore, the ejector pin is transmission-connected to the demoulding ejectors on both sides through an ejector pin bottom plate on one hand, and transmission-connected to the middle air blocking pipe through an ejector pin bottom plate on the other hand, and the demoulding ejectors on both sides and the middle air blocking pipe are fixed to the ejector pin bottom plate by threaded connection.

[0009] Furthermore, the air blocking tube is slidably matched with the top channel of the air cavity, and the frustum structure at the end of the air blocking tube is sealingly matched with the conical surface of the air cavity opening, and the diameter of the spring in the middle of the air blocking tube is larger than the aperture of the top channel of the air cavity.

[0010] Furthermore, forming punches are fixed on both sides of the top of the static mold seat, and a guide column is fixed on one end of the static mold seat.

[0011] Furthermore, a movable mold seat is arranged above the static mold seat, and a guide sleeve cooperating with the guide column is provided at one end of the movable mold seat.

[0012] Furthermore, a positioning ring is fixed on the top of the movable mold base, and a nozzle is arranged in the middle of the positioning ring.

[0013] Furthermore, the bottom of the nozzle is connected to a branch flow channel, and the end of the branch flow channel is connected to a double-station injection cavity, and the double-station injection cavity corresponds to the molding convex molds on both sides.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. When the utility model is in use, on the one hand, the ejector rod is transmission connected with the demoulding ejectors on both sides through the ejector bottom plate. After the safety helmet product is cooled and formed, it is ejected and demoulded by the molding convex dies on both sides of the static mold seat. The safety helmet product is prevented from sticking to the inner wall of the mold cavity by applying a demoulding agent on the inner wall of the double-station injection cavity in advance. On the other hand, the ejector pin is transmission connected with the middle air blocking pipe through the ejector bottom plate, so that the frustum structure at the end of the air blocking pipe opens the sealed top channel of the air cavity, and high-pressure air is pumped into the air cavity by a high-pressure air pump. The high-pressure air gushes out through the top channel of the air cavity, and the safety helmet product is blown off from the side by the ejector pin end to realize automatic unloading. The present application not only realizes the ejection and anti-sticking of the safety helmet product through the setting of the quick demoulding component, but also can further realize the blowing and unloading of the safety helmet product, without the need to manually peel off the safety helmet.

[0016] 2. When the utility model is in use, the positioning ring on the top of the movable mold seat is used to connect the extrusion die head, and the molten plastic enters the branch flow channel through the nozzle and finally passes into the corresponding double-station injection cavity. The double-station injection cavity corresponds to the molding convex molds on both sides of the static mold seat, and can realize batch injection molding production of multiple safety helmets at the same time, thereby improving the working efficiency. In addition, the guide sleeve at one end of the movable mold seat is positioned and matched with the guide column at one end of the static mold seat, and the closing stroke of the movable mold seat and the static mold seat is limited and guided to prevent product molding failure due to cavity misalignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall combined structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall split structure of the utility model.

[0020] In the figure: 1. static mold base; 2. quick demoulding assembly; 201. air cavity; 202. high-pressure air pump; 203. ejector base plate; 204. ejector rod; 205. demoulding ejector; 206. air blocking pipe; 207. spring; 3. molding punch; 4. guide column; 5. dynamic mold base; 6. guide sleeve; 7. positioning ring; 8. nozzle; 9. branch flow channel; 10. double-station injection cavity. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figures 1 to 3As shown, an anti-sticking quick demoulding mechanism for an injection mold comprises a static mold base 1 and a quick demoulding component 2. The static mold base 1 is provided with a quick demoulding component 2, and the quick demoulding component 2 comprises an air cavity 201, a high-pressure air pump 202, an ejector base plate 203, an ejector rod 204, a demoulding ejector 205, an air blocking pipe 206 and a spring 207. The air cavity 201 is opened in the middle of the static mold base 1, and the channel opening of the air cavity 201 is flush with the top plane of the static mold base 1. The air cavity 201 is connected to the high-pressure air pump 202 on one hand, and the air cavity 201 is connected to the top plane of the static mold base 1 on the other hand. The conical opening of the air channel is connected, the air cavity 201 is externally connected to a high-pressure air pump 202, and a ejector base plate 203 is slidably installed inside the air cavity 201, the bottom plane of the ejector base plate 203 is fixedly connected to the output end of the ejector rod 204, and the two sides of the top of the ejector base plate 203 are fixedly connected to demoulding ejectors 205, the middle end of the top of the ejector base plate 203 is fixedly connected to an air blocking pipe 206, and a spring 207 is sleeved in the middle of the air blocking pipe 206, the ejector rod 204 is transmission-connected to the demoulding ejectors 205 on both sides through the ejector base plate 203, and the ejector rod 204 is on the other hand through the ejector The needle base plate 203 is connected to the middle air blocking pipe 206 by transmission, and the demoulding ejector pins 205 on both sides and the middle air blocking pipe 206 are fixed to the ejector base plate 203 by threaded connection. On the one hand, the ejector rod 204 is connected to the demoulding ejector pins 205 on both sides by transmission through the ejector base plate 203. After the helmet product is cooled and formed, it is ejected from the mold by the molding convex molds 3 on both sides of the static mold seat 1. The helmet product is prevented from sticking to the inner wall of the mold cavity by applying a release agent on the inner wall of the double-station injection cavity 10 in advance. The air blocking pipe 206 is slidably matched with the top channel of the air cavity 201, and The truncated cone structure at the end of the air blocking tube 206 is sealed with the conical surface of the opening of the air cavity 201, and the diameter of the spring 207 in the middle of the air blocking tube 206 is larger than the aperture of the top channel of the air cavity 201. On the other hand, the ejector pin is connected to the middle air blocking tube 206 through the ejector pin bottom plate 203, so that the truncated cone structure at the end of the air blocking tube 206 opens the sealed top channel of the air cavity 201, and high-pressure air is pumped into the air cavity 201 through the high-pressure air pump 202. The high-pressure air gushes out through the top channel of the air cavity 201, and the safety helmet product is blown off from the side by the ejector pin end to realize automatic unloading;

[0023] like Figure 1 to Figure 2As shown, molding convex molds 3 are fixed on both sides of the top of the static mold base 1, and a guide column 4 is fixed at one end of the static mold base 1, a movable mold base 5 is arranged above the static mold base 1, and a guide sleeve 6 matching with the guide column 4 is opened at one end of the movable mold base 5, a positioning ring 7 is fixed on the top of the movable mold base 5, and a nozzle 8 is arranged in the middle of the positioning ring 7, the bottom of the nozzle 8 is connected with a branch flow channel 9, and the end of the branch flow channel 9 is connected with a double-station injection cavity 10, and the double-station injection cavity 10 corresponds to the molding convex molds 3 on both sides, and the top of the movable mold base 5 is fixed with a plurality of convex molds 3 on both sides. The positioning ring 7 is used to connect the extrusion die head. The molten plastic enters the branch flow channel 9 through the nozzle 8 and finally passes into the corresponding double-station injection cavity 10. The double-station injection cavity 10 corresponds to the molding punches 3 on both sides of the static mold base 1, and can realize batch injection production of multiple safety helmets at the same time to improve the working efficiency. In addition, the guide sleeve 6 at one end of the dynamic mold base 5 is positioned and matched with the guide column 4 at one end of the static mold base 1, and the closing stroke of the dynamic mold base 5 and the static mold base 1 is limited and guided to prevent product molding failure due to cavity misalignment.

[0024] Working principle: When using this kind of anti-sticking and quick demoulding mechanism of the injection mold, the positioning ring 7 on the top of the movable mold seat 5 is used to connect the extrusion die head, and the molten plastic enters the branch flow channel 9 through the nozzle 8, and finally passes into the corresponding double-station injection cavity 10. The double-station injection cavity 10 corresponds to the molding convex molds 3 on both sides of the static mold seat 1, and can realize batch injection production of multiple safety helmets at the same time, thereby improving the working efficiency. In addition, the guide sleeve 6 at one end of the movable mold seat 5 is positioned and matched with the guide column 4 at one end of the static mold seat 1, and the closing stroke of the movable mold seat 5 and the static mold seat 1 is limited and guided to prevent the product molding failure caused by the misalignment of the mold cavity. On the one hand, the ejector rod 204 is connected to the demoulding ejectors 205 on both sides through the ejector bottom plate 203, and the safety helmet product is cooled and molded. The mold is ejected by the forming punches 3 on both sides of the static mold base 1, and a release agent is applied to the inner wall of the double-station injection cavity 10 in advance to prevent the safety helmet product from sticking to the inner wall of the mold cavity. On the other hand, the ejector is connected to the middle air blocking pipe 206 through the ejector base plate 203, so that the cone structure at the end of the air blocking pipe 206 opens the sealed top channel of the air cavity 201, and high-pressure air is pumped into the air cavity 201 through the high-pressure air pump 202. The high-pressure air flows out through the top channel of the air cavity 201, and the safety helmet product is blown off from the side by the ejector end to realize automatic unloading. The present application not only realizes the ejection and anti-sticking of the safety helmet product through the setting of the quick demoulding component 2, but also can further realize the blowing and unloading of the safety helmet product, without the need to manually peel off the safety helmet.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An anti-sticking and quick demoulding mechanism for injection molds, characterized in that: The invention comprises a static mold base (1) and a quick demoulding component (2), wherein the static mold base (1) is provided with a quick demoulding component (2), wherein the quick demoulding component (2) comprises an air cavity (201), a high-pressure air pump (202), an ejector base plate (203), an ejector rod (204), a demoulding ejector pin (205), an air blocking pipe (206) and a spring (207), wherein the air cavity (201) is externally connected to the high-pressure air pump (202), and an ejector base plate (203) is slidably mounted inside the air cavity (201), wherein the bottom plane of the ejector base plate (203) is fixedly connected to the output end of the ejector rod (204), and the demoulding ejector pins (205) are fixedly connected to the two sides of the top of the ejector base plate (203), and the middle end of the top of the ejector base plate (203) is fixedly connected to the air blocking pipe (206), and the middle part of the air blocking pipe (206) is sleeved with a spring (207).

2. The anti-sticking and quick demoulding mechanism for injection mold according to claim 1, characterized in that: The air cavity (201) is opened in the middle of the static mold base (1), and the channel opening of the air cavity (201) is flush with the top plane of the static mold base (1). The air cavity (201) is connected to the high-pressure air pump (202) on one hand, and the air cavity (201) is connected to the conical opening of the top channel on the other hand.

3. The anti-sticking and quick demoulding mechanism for injection mold according to claim 1, characterized in that: The ejector pin (204) is connected to the ejector pins (205) on both sides through the ejector pin base plate (203) in a transmission manner, and the ejector pin (204) is connected to the middle air blocking pipe (206) through the ejector pin base plate (203) in a transmission manner, and the ejector pins (205) on both sides and the middle air blocking pipe (206) are fixed to the ejector pin base plate (203) in a threaded connection manner.

4. The anti-sticking and quick demoulding mechanism for injection mold according to claim 1, characterized in that: The air blocking tube (206) is slidably matched with the top channel of the air cavity (201), and the truncated cone structure at the end of the air blocking tube (206) is sealed with the conical surface of the opening of the air cavity (201), and the diameter of the spring (207) in the middle of the air blocking tube (206) is larger than the aperture of the top channel of the air cavity (201).

5. The anti-sticking and quick demoulding mechanism for injection mold according to claim 1, characterized in that: Forming convex dies (3) are fixed on both sides of the top of the static mold seat (1), and a guide column (4) is fixed on one end of the static mold seat (1).

6. The anti-sticking and quick demoulding mechanism for injection mold according to claim 1, characterized in that: A movable mold seat (5) is arranged above the static mold seat (1), and a guide sleeve (6) matching with the guide column (4) is provided at one end of the movable mold seat (5).

7. The anti-sticking and quick demoulding mechanism for injection mold according to claim 6, characterized in that: A positioning ring (7) is fixed on the top of the movable mold base (5), and a nozzle (8) is arranged in the middle of the positioning ring (7).

8. The anti-sticking and quick demoulding mechanism for injection mold according to claim 7, characterized in that: The bottom of the nozzle (8) is connected to a branch flow channel (9), and the end of the branch flow channel (9) is connected to a double-station injection cavity (10), and the double-station injection cavity (10) corresponds to the molding convex molds (3) on both sides.

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