Rapid ejection structure of mold

Abstract

The utility model relates to the technical field of dies, in particular to a rapid ejection structure of a die, which comprises an upper die holder and a lower die holder, a die core is fixedly arranged at the bottom of the upper die holder, an accommodating cavity is arranged at the upper end of the lower die holder, a cavity is arranged below the accommodating cavity, an ejection plate is arranged in the cavity, an ejection block is arranged on the ejection plate, and an ejection hole matched with the ejection block is arranged at the bottom of the accommodating cavity. The corner of the top plate is connected with the upper die base through a movable unit and used for rapidly and automatically ejecting a workpiece out when the workpiece is taken out, a plurality of side die plates are arranged in the middle of the containing cavity, and a linkage unit for driving the side die plates to be closed and separated is arranged on the movable unit. According to the utility model, the workpiece can be automatically ejected, the automation degree is high, and the abrasion generated when the workpiece is ejected can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a rapid ejection structure for a mold. Background Technology

[0002] Injection molds are tools used in the plastics processing industry, working in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions. Due to the wide variety of plastic types and processing methods, and the varying complexity of plastic molding machines and plastic products, the types and structures of plastic molds are also diverse.

[0003] After the workpiece is formed, it needs to be removed from the injection mold. In the existing technology, it is not possible to automatically eject the workpiece. Manual removal is time-consuming and laborious, and the friction between the workpiece and the side wall of the mold cavity can easily cause damage. Therefore, we have introduced a quick ejection structure for the mold. Utility Model Content

[0004] The purpose of this invention is to provide a rapid ejection structure for a mold, which can not only automatically eject the workpiece with a high degree of automation, but also reduce the wear generated during workpiece ejection, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quick ejection structure for a mold includes an upper mold base and a lower mold base. A mold core is fixedly provided at the bottom of the upper mold base, and a receiving cavity is provided at the upper end of the lower mold base. A cavity is provided below the receiving cavity, and a top plate is provided in the cavity. A top block is provided on the top plate, and a top hole that mates with the top block is provided at the bottom of the receiving cavity. The corner of the top plate is connected to the upper mold base through a movable unit for quick and automatic ejection when the workpiece is removed. Multiple side templates are provided in the middle of the receiving cavity, and a linkage unit is provided on the movable unit to drive the side templates to close and separate.

[0007] As a further embodiment of this utility model, the movable unit includes a hollow column, a sliding rod, and a circular block. The hollow column is fixedly installed at the corner of the top plate. The upper side of the cavity is provided with a circular hole that mates with the hollow column. The upper end of the hollow column is provided with a sliding hole. The sliding rod is slidably installed in the sliding hole. Both ends of the sliding rod extend to the outside of the sliding hole. The upper end of the sliding rod is fixedly connected to the upper mold base, and the lower end of the sliding rod is fixedly connected to the circular block, which is used to drive the ejection mechanism to eject and reset.

[0008] As a further embodiment of this utility model, the linkage unit includes a guide block, which is fixedly mounted on the outer wall of the hollow column near the mold core. The lower end of the guide block is provided with an inclined surface, and a guide groove that cooperates with the guide block is provided between the circular hole and the receiving cavity, which is used to drive the side template to close and separate.

[0009] As a further embodiment of this utility model, the side wall of the side template is provided with a 45° chamfer, and the four side templates can be combined into a mold.

[0010] As a further embodiment of this invention, the diameter of the circular block is larger than the diameter of the sliding hole, which is used to prevent the sliding rod from sliding out of the sliding hole.

[0011] As a further embodiment of this invention, the lower end of the side template is hinged to the bottom of the receiving cavity via a pin.

[0012] As a further embodiment of this utility model, a mold cavity is formed between the mold core and the inner wall of the mold body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The rapid ejection structure of this mold consists of a lower mold base, a hollow column, a guide block, a top block, an upper mold base, side mold plates, a guide groove, a top plate, a round block, a sliding rod, a mold core, and a receiving cavity. When the upper and lower mold bases are closed, the upper mold base moves the hollow column downwards. The hollow column, through the top plate, moves the top block completely into the top hole. At the same time, the sliding rod moves the round block to the lower side of the hollow column. The hollow column moves the guide block into the guide groove, and the inclined surface of the guide block presses against the corresponding side mold plate. Multiple side mold plates form a complete mold body. After injection molding into the mold cavity through the injection hole, the upper and lower mold bases are opened. The upper mold base moves the hollow column upwards through the sliding rod and the round block. The hollow column, through the top plate, moves the top block upwards. The top block ejects the workpiece, and at the same time, the guide block no longer presses against the side mold plate. At this time, the four side mold plates no longer press against the workpiece, and the workpiece can be removed. This not only automatically ejects the workpiece with a high degree of automation but also reduces wear during workpiece ejection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a rapid ejection structure for a mold.

[0016] Figure 2 This is a schematic diagram of the internal structure of the lower mold base.

[0017] Figure 3 for Figure 2 A side view diagram of the structure.

[0018] In the diagram: 1. Lower mold base; 2. Hollow column; 3. Guide block; 4. Top block; 5. Upper mold base; 6. Side template; 7. Guide groove; 8. Top plate; 9. Round block; 10. Sliding rod; 11. Mold core; 12. Receiving cavity; 13. Cavity. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 This utility model provides a technical solution:

[0021] A quick ejection structure for a mold includes an upper mold base 5 and a lower mold base 1. A mold core 11 is fixedly provided at the bottom of the upper mold base 5. A receiving cavity 12 is provided at the upper end of the lower mold base 1. A cavity 13 is provided below the receiving cavity 12. A top plate 8 is provided in the cavity 13. A top block 4 is provided on the top plate 8. A top hole that mates with the top block 4 is provided at the bottom of the receiving cavity 12. The corner of the top plate 8 is connected to the upper mold base 5 through a movable unit for quick and automatic ejection when the workpiece is removed. Multiple side templates 6 are provided in the middle of the receiving cavity 12. A linkage unit is provided on the movable unit to drive the side templates 6 to close and separate.

[0022] The movable unit includes a hollow column 2, a slide rod 10, and a circular block 9. The hollow column 2 is fixedly installed at the corner of the top plate 8. The upper side of the cavity 13 is provided with a circular hole that matches the hollow column 2. The upper end of the hollow column 2 is provided with a sliding hole. The slide rod 10 is slidably installed in the sliding hole. Both ends of the slide rod 10 extend to the outside of the sliding hole. The upper end of the slide rod 10 is fixedly connected to the upper mold base 5, and the lower end of the slide rod 10 is fixedly connected to the circular block 9, which is used to drive the ejection mechanism to eject and reset.

[0023] refer to Figure 2 The linkage unit includes a guide block 3, which is fixedly installed on the outer wall of the hollow column 2 near the mold core 11. The lower end of the guide block 3 is provided with an inclined surface, and a guide groove 7 that cooperates with the guide block 3 is provided between the round hole and the receiving cavity 12, which is used to drive the side template to close and separate.

[0024] refer to Figure 2 and Figure 3 The side wall of the side template 6 is chamfered at 45°, and the four side templates 6 can be combined into one mold.

[0025] refer to Figure 3 The diameter of the circular block 9 is larger than the diameter of the sliding hole, which is used to prevent the sliding rod 10 from sliding out of the sliding hole.

[0026] refer to Figure 2 and Figure 3 The lower end of the side template 6 is hinged to the bottom of the receiving cavity 12 by a pin.

[0027] refer to Figure 2 and Figure 3A mold cavity is formed between the mold core 11 and the inner wall of the mold body.

[0028] In use, when the upper mold base 5 and the lower mold base 1 are closed, the upper mold base 5 drives the hollow column 2 to move downward. The hollow column 2 drives the top block 4 to move completely into the top hole through the top plate 8. At the same time, the slide rod 10 drives the round block 9 to move to the lower side of the hollow column 2. The hollow column 2 drives the guide block 3 to slide into the guide groove 7. The inclined surface of the guide block 3 presses against the corresponding side template 6. Multiple side templates 6 form a complete mold body. After injection molding into the mold cavity through the injection hole, the upper mold base 5 and the lower mold base 1 are opened. The upper mold base 5 drives the hollow column 2 to rise through the slide rod 10 and the round block 9. The hollow column 2 drives the top block 4 to rise through the top plate 8. The top block 4 ejects the workpiece. At the same time, the guide block 3 no longer presses against the side template 6. At this time, the four side templates 6 no longer press against the workpiece, and the workpiece can be taken out. It can not only automatically eject the workpiece with a high degree of automation, but also reduce the wear generated when ejecting the workpiece.

[0029] 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 quick ejection structure of a mold, comprising an upper mold base (5) and a lower mold base (1), a mold core (11) is fixedly arranged at the bottom of the upper mold base (5), characterized in that: The lower die base (1) is provided with a containing cavity (12) at the upper end, and a cavity (13) is arranged below the containing cavity (12), and a top plate (8) is arranged in the cavity (13), and a top block (4) is arranged on the top plate (8), and a top hole matched with the top block (4) is arranged at the bottom of the containing cavity (12), and the corner of the top plate (8) is connected with the upper die base (5) through a movable unit, and a plurality of side mold plates (6) are arranged in the middle of the containing cavity (12), and a linkage unit for driving the side mold plates (6) to close and separate is arranged on the movable unit.

2. The quick ejection structure of a mold according to claim 1, wherein: The movable unit comprises a hollow column (2), a sliding rod (10) and a round block (9), the hollow column (2) is fixedly arranged at the corner of the top plate (8), the upper side of the cavity (13) is provided with a round hole matched with the hollow column (2), the upper end of the hollow column (2) is provided with a sliding hole, the sliding rod (10) is slidingly arranged in the sliding hole, the both ends of the sliding rod (10) extend to the outside of the sliding hole, the upper end of the sliding rod (10) is fixedly connected with the upper die base (5), and the lower end of the sliding rod (10) is fixedly connected with the round block (9), which is used for driving the ejection mechanism to eject and reset.

3. The quick ejection structure of a mold according to claim 2, wherein: The linkage unit comprises a guide block (3), the guide block (3) is fixedly arranged on the outer wall of the hollow column (2) near the mold core (11), the lower end of the guide block (3) is provided with an inclined surface, and a guide groove (7) matched with the guide block (3) is arranged between the round hole and the containing cavity (12), which is used for driving the side mold plates (6) to close and separate.

4. The quick ejection structure of a mold according to claim 3, wherein: The side wall of the side mold plate (6) is provided with a chamfered corner at 45°, and four side mold plates (6) can be combined into a mold body.

5. The quick ejection structure of a mold according to claim 4, wherein: The diameter of the round block (9) is greater than the hole diameter of the sliding hole, which is used for preventing the sliding rod (10) from sliding out of the sliding hole.

6. The quick ejection structure of a mold according to claim 5, wherein: The lower end of the side mold plate (6) is hingedly connected with the bottom of the containing cavity (12) through a pin shaft.

7. The quick ejection structure of a mold according to claim 6, wherein: The mold core (11) and the inner side wall of the mold body form a mold cavity.

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