A pusher assembly for plastic molds

Abstract

This utility model discloses a material ejector assembly for plastic molds, including an upper module, a lower module at the bottom of the upper module, a molding groove at the top of the lower module, and a support base fixedly mounted at the bottom of the lower module. Guide rods are fixedly mounted at the front and rear ends of the top sides of the support base. Clamping plates are fitted onto the top and bottom ends of the guide rods, and an inflatable airbag is fixedly mounted between the two clamping plates. Connecting rods are fixedly mounted at the four corners of the top of the clamping plates. This material ejector assembly for plastic molds, by incorporating an inflatable airbag, clamping plates, support rods, and a support pad, enables uniform force delivery during use, effectively preventing jamming and tilting during ejection, ensuring smooth vertical ejection, reducing material wear, providing convenience for users, and improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, specifically to a pusher assembly for plastic molds. Background Technology

[0002] Plastic molds are a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes in the mold's punch, die, and auxiliary molding mechanisms allow for the production of a series of plastic parts of different shapes and sizes.

[0003] The prior art document, "A material ejector assembly for plastic molds," publication number (CN219466895U), describes a material ejector mechanism that eliminates the need for manual demolding. By using a suction cup and a slanted panel, the ejector can directly grasp the molded plastic flower pot and then demold it under the force of the first cylinder. This not only eliminates the potential safety hazards of manual demolding but also saves on labor costs to some extent.

[0004] However, in actual use, the pusher assembly suffers from uneven force on the pusher plate, which easily causes tilting during the pusher process. This results in inconsistent force exerted by the pusher rod on the plastic product, leading to deformation or damage to the plastic product, affecting product quality, and causing inconvenience to users. It no longer meets the user's needs. Utility Model Content

[0005] The purpose of this utility model is to provide a pusher assembly for plastic molds, in order to solve the problems mentioned in the background art, such as uneven force on the pusher plate during actual use, easy tilting during the pusher process, inconsistent force exerted by the pusher rod on the plastic product, resulting in deformation or damage to the plastic product, affecting product quality, causing inconvenience to users, and failing to meet the user's needs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material ejector assembly for a plastic mold, comprising an upper module, a lower module at the bottom of the upper module, a molding groove at the top of the lower module, a support base fixedly mounted at the bottom of the lower module, guide rods fixedly mounted at the front and rear ends of the top sides of the support base, clamping plates fitted at the top and bottom of the guide rods, an expansion airbag fixedly mounted between the two clamping plates, connecting rods fixedly mounted at the four corners of the top of the clamping plates, through grooves at the four corners of the bottom of the lower module, a support rod fixedly mounted at the top of the connecting rod, and a pad fixedly mounted at the top of the support rod.

[0007] Furthermore, the upper module and the lower module are in contact with each other, and the forming groove and the lower module are integrated into one unit.

[0008] Furthermore, the front surface of the inflatable airbag is connected to an air intake pipe.

[0009] Furthermore, a support spring is sleeved at the middle position of the guide rod, and the top and bottom of the support spring are fixedly connected to the clamping plate.

[0010] Furthermore, the top of the connecting rod extends into the interior of the through groove and contacts the inner wall of the through groove.

[0011] Furthermore, the strut adopts a triangular design.

[0012] Furthermore, the pad contacts the inner wall of the channel, and the pad is made of high heat-resistant plastic.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This ejector assembly for plastic molds, by incorporating an inflatable airbag, clamping plate, support rod, and pad, enables the device to deliver force evenly during use. This effectively prevents problems such as jamming and tilting during the ejection process, ensuring that the entire ejection action proceeds smoothly in the vertical direction, reducing material wear, providing convenience for users, improving the practicality of the device, and meeting the user's needs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 for Figure 2 A magnified view of part A in the diagram; Figure 4 for Figure 2 A magnified view of part B in the diagram.

[0015] In the diagram: 1. Upper module; 2. Lower module; 3. Molding groove; 4. Support base; 5. Guide rod; 6. Clamping plate; 7. Inflatable airbag; 8. Connecting rod; 9. Through groove; 10. Support rod; 11. Pad; 12. Air inlet pipe; 13. Support spring. Detailed Implementation

[0016] The utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only descriptive and are not limiting of the scope of protection of this utility model.

[0017] Please see Figure 1-4This utility model provides a technical solution: a material ejector assembly for a plastic mold, including an upper module 1 for mold closing, a lower module 2 at the bottom of the upper module 1 for mounting corresponding components, a molding groove 3 at the top of the lower module 2 for injection molding, a support base 4 fixedly mounted at the bottom of the lower module 2 for support, and guide rods 5 fixedly mounted at the front and rear ends of the top two sides of the support base 4 for guidance. A clamping plate 6 is provided, which is used to set the corresponding components. An inflatable airbag 7 is fixedly set between the two clamping plates 6. The inflatable airbag 7 can inflate and drive the clamping plate 6 to move. A connecting rod 8 is fixedly set at the top of the inflatable airbag 7 and the clamping plate 6 near the four corners. The connecting rod 8 can drive the support rod 10 to move. A through groove 9 is opened at the bottom of the lower module 2 near the four corners. A support rod 10 is fixedly set at the top of the connecting rod 8. The support rod 10 can drive the pad 11 to move. A pad 11 is fixedly set at the top of the support rod 10. The pad 11 can push the material to move.

[0018] Furthermore, the upper module 1 and the lower module 2 are in contact with each other, and the forming groove 3 and the lower module 2 are integrated into one unit. This integrated design facilitates processing by the user and also prevents leakage.

[0019] Furthermore, the front surface of the inflatable airbag 7 is connected to an air intake pipe 12, which is capable of allowing air to enter.

[0020] Furthermore, a support spring 13 is sleeved on the middle position of the guide rod 5. The top and bottom of the support spring 13 are fixedly connected to the clamping plate 6, and the support spring 13 can support the clamping plate 6.

[0021] Furthermore, the top of the connecting rod 8 extends into the interior of the through groove 9 and contacts the inner wall of the through groove 9, wherein the connecting rod 8 is able to drive the support rod 10 to move.

[0022] Furthermore, the strut 10 adopts a triangular design, which makes the force distribution more stable and even.

[0023] Furthermore, the pad 11 contacts the inner wall of the channel 9. The pad 11 is made of high heat-resistant plastic. The pad 11 is designed to make soft contact with the material, thereby reducing scratches on the material.

[0024] Working principle: When using this device to push material, the user activates the expansion airbag 7. The expansion airbag 7 can be connected to an external air supply device through the air inlet pipe 12, so that air can be supplied to the expansion airbag 7. After the expansion airbag 7 expands, it will drive the clamping plate 6 to move. The movement of the clamping plate 6 will drive the connecting rod 8 to move. The movement of the connecting rod 8 will drive the support rod 10 to move. The movement of the support rod 10 will drive the support pad 11 to move. The movement of the support pad 11 will push the material upward to demold.

[0025] Based on the above work process, we can conclude that: This pusher assembly for plastic molds, by incorporating an inflatable airbag 7, a clamping plate 6, a support rod 10, and a support pad 11, enables the device to deliver force evenly during use. This effectively prevents problems such as jamming and tilting during the pusher process, ensuring that the entire pusher action proceeds smoothly in the vertical direction, reducing material wear, providing convenience for users, improving the practicality of the device, and meeting the user's needs.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pusher assembly for a plastic mold, comprising an upper module (1), characterized in that: The lower module (2) is provided at the bottom of the upper module (1). A forming groove (3) is provided at the top of the lower module (2). A support base (4) is fixedly provided at the bottom of the lower module (2). Guide rods (5) are fixedly provided at the front and rear ends of the top two sides of the support base (4). Clamping plates (6) are fitted at the top and bottom of the guide rods (5). An inflatable airbag (7) is fixedly provided between the two clamping plates (6). Connecting rods (8) are fixedly provided at the four corners of the top of the clamping plates (6). Through grooves (9) are provided at the four corners of the bottom of the lower module (2). A support rod (10) is fixedly provided at the top of the connecting rod (8). A pad (11) is fixedly provided at the top of the support rod (10).

2. The ejector assembly for a plastic mold according to claim 1, characterized in that: The upper module (1) and the lower module (2) are in contact with each other, and the forming groove (3) and the lower module (2) are integrated.

3. The ejector assembly for a plastic mold according to claim 1, characterized in that: The front surface of the inflatable airbag (7) is connected to an air intake pipe (12).

4. The ejector assembly for a plastic mold according to claim 1, characterized in that: A support spring (13) is sleeved on the middle position of the guide rod (5), and the top and bottom of the support spring (13) are fixedly connected to the clamp (6).

5. The ejector assembly for a plastic mold according to claim 1, characterized in that: The top of the connecting rod (8) extends into the interior of the through groove (9) and contacts the inner wall of the through groove (9).

6. The ejector assembly for a plastic mold according to claim 1, characterized in that: The strut (10) adopts a triangular design.

7. The ejector assembly for a plastic mold according to claim 1, characterized in that: The pad (11) contacts the inner wall of the channel (9), and the pad (11) is made of high heat-resistant plastic.

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