Mold ejection cushioning device based on elastic support

Abstract

The utility model relates to mould accessory technical field especially based on elastic support's mould ejection buffer device, including organism, the surface of organism is equipped with processing cavity, the surface of organism is equipped with rectangular through -hole, rectangular through -hole is located below processing cavity, the inner wall sliding connection of rectangular through -hole has first rectangle and second rectangle, second rectangle sets up below first rectangle, both ends side wall of first rectangle are fixedly connected with chain in corresponding both ends of mould seat, both ends side wall of first rectangle are fixedly connected with barb, both ends side wall of second rectangle are fixedly connected with the installation cylinder of the outer wall joint of barb, through the coordination of first rectangle and second rectangle, realize the secondary ejection of forming finished product, avoid the problem of single ejection and die clamping, and when secondary ejection, double elastic buffer makes the ejection force way gradual transmission, improves product pass rate, reduces the cost of waste product rework, artificial processing die clamping and mould rigidity wear simultaneously, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of mold accessories technology, and in particular to a mold ejection buffer device based on elastic support. Background Technology

[0002] The mold ejection mechanism pushes the molded product out of the mold through ejector pins or ejector plates, ensuring a smooth demolding process. Its performance directly affects the product quality, such as deformation rate, surface defects, and production efficiency.

[0003] In the mold ejection process, when a rigid ejection structure is used, the impact force at the moment of ejection will directly act on the molded product, especially thin-walled parts and brittle parts. Thin-walled parts, due to their weak structural strength, are difficult to withstand sudden concentrated thrust and are prone to deformation problems such as local dents and edge warping, and even fine cracks in corners where stress is concentrated. Brittle parts are more likely to break completely due to impact. Even if they are not completely broken, the surface is often scratched due to the hard contact of the ejector rod, which damages the integrity of the product's appearance and increases the defect rate. Utility Model Content

[0004] In view of the aforementioned problems with the ejection of finished products, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mold ejection buffer device based on elastic support, including a body, a processing cavity is opened on the surface of the body, a cylinder is fixedly installed at the top of the body, a plurality of guide columns are fixedly connected to the bottom of the processing cavity, and a mold base fixedly connected to the output end of the cylinder is slidably connected to the circumferential surface of the guide columns.

[0006] The surface of the machine body has a rectangular through hole located below the machining cavity. A first rectangular plate and a second rectangular plate are slidably connected to the inner wall of the rectangular through hole. The second rectangular plate is located below the first rectangular plate. Chains are fixedly connected to the two end side walls of the first rectangular plate and the corresponding end of the mold base. Barbs are fixedly connected to the two end side walls of the first rectangular plate. Mounting cylinders that engage with the outer walls of the barbs are fixedly connected to the two end side walls of the second rectangular plate. Two fixing blocks that are slidably connected to the inner wall of the mounting cylinder are fixedly connected to the bottom of the rectangular through hole. Multiple evenly distributed top columns are fixedly connected to the top of the fixing blocks. A sliding hole communicating with the rectangular through hole is opened at the bottom of the machining cavity. A top plate is slidably connected to the inner wall of the sliding hole.

[0007] As a preferred embodiment of the mold ejection buffer device based on elastic support of this utility model, the bottom end of the top plate is fixedly connected with multiple rubber pillars, the end of the rectangular through hole near the processing cavity is slidably connected with multiple evenly distributed movable cylinders, and the bottom end of the rubber pillar is fixedly connected with a stop post that is fixedly connected to the top end of the first rectangular plate.

[0008] As a preferred embodiment of the mold ejection buffer device based on elastic support of this utility model, the inner wall of the movable cylinder is fitted with a first spring, the top end of the first rectangular plate is provided with a through hole that slides with the circumferential surface of the ejector pin, and the top end of the second rectangular plate is fixedly connected with a buffer pad.

[0009] As a preferred embodiment of the mold ejection buffer device based on elastic support of this utility model, the mold base is provided with an injection flow channel, and a telescopic tube communicating with the injection flow channel is fixedly installed on the top of the processing cavity.

[0010] As a preferred embodiment of the mold ejection buffer device based on elastic support of this utility model, a silicone pad is fixedly connected to the bottom end of the rectangular through hole, and a moving block is slidably connected to the inner wall of the mounting cylinder.

[0011] As a preferred embodiment of the mold ejection buffer device based on elastic support of this utility model, the end face of the moving block near the fixed block is chamfered, a second spring is connected between the end face of the moving block away from the fixed block and the inner wall of the mounting cylinder, and a locking block is slidably connected to the end of the barb away from the fixed block, and the surface of the locking block is fixedly connected to the surface of the moving block.

[0012] The beneficial effects of this utility model are: Through the coordinated operation of the first and second rectangular plates, the molded product is ejected twice. During the first ejection, the second rectangular plate drives the ejector pin to separate the finished product from the cavity. During the second ejection, the first rectangular plate drives the ejector plate to complete demolding, avoiding the problem of mold jamming during single ejection. During the second ejection, the first rectangular plate squeezes the first spring and rubber pin, and the double elastic buffering allows the ejection force to be transmitted gradually, completely avoiding scratches, cracks and deformations of the finished product caused by rigid ejection, significantly improving the product qualification rate. At the same time, it reduces the cost of rework of scrap products, manual handling of mold jamming and rigid wear of molds, extends mold life, ensures continuous and stable production, and balances the improvement of quality and reduction of production costs, making it highly practical. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the chain installation structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the top column installation structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the mounting structure of the fixing block of this utility model.

[0017] Figure 5 This is a schematic diagram of the barbed hook installation structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the card block installation structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Mold base; 3. Guide post; 4. Chain; 5. Injection runner; 6. Telescopic tube; 7. First rectangular plate; 8. Support post; 9. Rubber post; 10. Top plate; 11. Second rectangular plate; 12. Top post; 13. Moving cylinder; 14. First spring; 15. Silicone pad; 16. Barb; 17. Mounting cylinder; 18. Fixing block; 19. Moving block; 20. Locking block; 21. Second spring. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1

[0021] Reference Figures 1-4 The first embodiment of this utility model provides a mold ejection buffer device based on elastic support, including a body 1, a processing cavity is opened on the surface of the body 1, a cylinder is fixedly installed at the top of the body 1, a plurality of guide columns 3 are fixedly connected to the bottom of the processing cavity, and a mold base 2 fixedly connected to the output end of the cylinder is slidably connected to the circumferential surface of the guide columns 3.

[0022] A rectangular through hole is provided on the surface of the machine body 1. The rectangular through hole is located below the processing cavity. A first rectangular plate 7 and a second rectangular plate 11 are slidably connected to the inner wall of the rectangular through hole. The second rectangular plate 11 is located below the first rectangular plate 7. Chains 4 are fixedly connected to the two ends of the first rectangular plate 7 and the corresponding ends of the mold base 2. Hooks 16 are fixedly connected to the two ends of the first rectangular plate 7. Mounting cylinders 17 that engage with the outer walls of the hooks 16 are fixedly connected to the two ends of the second rectangular plate 11. Two fixing blocks 18 that are slidably connected to the inner walls of the mounting cylinders 17 are fixedly connected to the bottom of the rectangular through hole. Multiple evenly distributed top posts 12 are fixedly connected to the top of the fixing blocks 18. A sliding hole communicating with the rectangular through hole is provided at the bottom of the processing cavity. A top plate 10 is slidably connected to the inner wall of the sliding hole.

[0023] Multiple rubber pillars 9 are fixedly connected to the bottom end of the top plate 10. Multiple evenly distributed movable cylinders 13 are slidably connected to one end of the rectangular through hole near the processing cavity. The bottom end of the rubber pillars 9 is fixedly connected to the abutment 8 which is fixedly connected to the top end of the first rectangular plate 7.

[0024] The inner wall of the movable cylinder 13 is fitted with a first spring 14, the top of the first rectangular plate 7 is provided with a through hole that slides with the circumferential surface of the top column 12, and the top of the second rectangular plate 11 is fixedly connected with a buffer pad.

[0025] The mold base 2 has an injection flow channel 5 inside, and a telescopic tube 6 that communicates with the injection flow channel 5 is fixedly installed on the top of the processing cavity.

[0026] During use, after the mold inside the processing cavity has completed injection molding, the cylinder at the top of the machine body 1 is activated, and the cylinder output end will drive the mold base 2 to slide steadily upward along the guide post 3 at the bottom of the processing cavity.

[0027] Since the two ends of the mold base 2 are fixedly connected to the first rectangular plate 7 in the rectangular through hole through the chain 4, when the mold base 2 moves upward, it will pull the first rectangular plate 7 to move upward in the rectangular through hole through the chain 4. At this time, the barbs 16 at both ends of the first rectangular plate 7 are in a snap-fit ​​state with the mounting cylinder 17 on the side wall of the second rectangular plate 11 below. Therefore, the first rectangular plate 7 will drive the second rectangular plate 11 to rise synchronously.

[0028] During the upward movement of the second rectangular plate 11, it will push the top post 12 at the top of the rectangular through hole bottom fixing block 18. The top post 12 passes through the through hole on the first rectangular plate 7 and moves upward along the sliding hole at the bottom of the processing cavity. Finally, it pushes the molded part evenly around the mold, so that the molded part is initially separated from the cavity wall to avoid the molded part sticking to the cavity.

[0029] At the same time, the mounting cylinder 17 on the second rectangular plate 11 will rise synchronously with it, and the moving block 19 on the inner wall of the mounting cylinder 17 will slide along the surface of the fixed block 18. When the moving block 19 slides to the preset protrusion position on the surface of the fixed block 18, the protrusion will squeeze the chamfered surface of the moving block 19, forcing the moving block 19 to contract into the mounting cylinder 17 and squeeze the second spring 21 inside the mounting cylinder 17. Example 2

[0030] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a silicone pad 15 is fixedly connected to the bottom end of the rectangular through hole, and a moving block 19 is slidably connected to the inner wall of the mounting cylinder 17.

[0031] The end face of the movable block 19 near the fixed block 18 is chamfered. A second spring 21 is connected between the end face of the movable block 19 away from the fixed block 18 and the inner wall of the mounting cylinder 17. A locking block 20 is slidably connected to the end of the barb 16 away from the fixed block 18. The surface of the locking block 20 is fixedly connected to the surface of the movable block 19.

[0032] During use, when the moving block 19 compresses the second spring 21, the locking block 20, which is fixedly connected to it, will move synchronously into the mounting cylinder 17 and gradually disengage from the locking of the top of the barb 16.

[0033] At this time, the mold base 2 continues to move upward, but since the barb 16 and the locking block 20 have disengaged, the chain 4 can only drive the first rectangular plate 7 to rise alone. When the first rectangular plate 7 moves upward, it will push the moving cylinder 13 at the top of the rectangular through hole, causing the first spring 14 inside the moving cylinder 13 to be compressed. At the same time, the abutment 8 at the top of the first rectangular plate 7 will squeeze the rubber column 9 upward. After the rubber column 9 is subjected to force, it will drive the top plate 10 to rise along the sliding hole, and push the molded part a second time. This push will make the molded part completely detach from the cavity, making it convenient for workers to take it out.

[0034] After the molded part is removed, the control cylinder drives the mold base 2 to reset downward. At this time, the compressed first spring 14 will release its elastic force, pushing the moving cylinder 13 and the first rectangular plate 7 to move downward. At the same time, the squeezed rubber column 9 will also return to its original shape, assisting the first rectangular plate 7 to move downward.

[0035] During the descent of the first rectangular plate 7, it will re-fit with the second rectangular plate 11 below, and drive the second rectangular plate 11 to reset synchronously. At the same time, the barb 16 descends with the first rectangular plate 7, and the moving block 19 inside the mounting cylinder 17 will disengage from the protrusion of the fixed block 18. The compressed second spring 21 releases its elastic force, pushing the moving block 19 to reset. The moving block 19 drives the locking block 20 to re-engage with the barb 16, and the entire device returns to its initial state, waiting for the next injection molding cycle.

[0036] The remaining structure is the same as that in Example 1.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mold ejection buffer device based on elastic support, comprising a body (1), wherein a processing cavity is formed on the surface of the body (1), a cylinder is fixedly installed at the top of the body (1), and a plurality of guide pillars (3) are fixedly connected to the bottom of the processing cavity, and a mold base (2) fixedly connected to the output end of the cylinder is slidably connected to the circumferential surface of the guide pillars (3), characterized in that: The surface of the machine body (1) is provided with a rectangular through hole. The rectangular through hole is located below the processing cavity. The inner wall of the rectangular through hole is slidably connected to a first rectangular plate (7) and a second rectangular plate (11). The second rectangular plate (11) is located below the first rectangular plate (7). The two side walls of the first rectangular plate (7) are fixedly connected to the two ends of the mold base (2). The two side walls of the first rectangular plate (7) are fixedly connected to barbs (16). The two side walls of the second rectangular plate (11) are fixedly connected to mounting cylinders (17) that engage with the outer walls of the barbs (16). The bottom end of the rectangular through hole is fixedly connected to two fixing blocks (18) that are slidably connected to the inner wall of the mounting cylinder (17). The top end of the fixing blocks (18) is fixedly connected to multiple evenly distributed top columns (12). The bottom of the processing cavity is provided with a sliding hole that communicates with the rectangular through hole. The inner wall of the sliding hole is slidably connected to a top plate (10).

2. The mold ejection buffer device based on elastic support according to claim 1, characterized in that: The bottom end of the top plate (10) is fixedly connected to a plurality of rubber columns (9), and the end of the rectangular through hole near the processing cavity is slidably connected to a plurality of evenly distributed movable cylinders (13). The bottom end of the rubber column (9) is fixedly connected to a stop column (8) which is fixedly connected to the top end of the first rectangular plate (7).

3. The mold ejection buffer device based on elastic support according to claim 2, characterized in that: The inner wall of the movable cylinder (13) is fitted with a first spring (14), the top of the first rectangular plate (7) is provided with a through hole that slides with the circumferential surface of the top column (12), and the top of the second rectangular plate (11) is fixedly connected with a buffer pad.

4. The mold ejection buffer device based on elastic support according to claim 1, characterized in that: The mold base (2) has an injection flow channel (5) inside, and the top of the processing cavity is fixedly installed with a telescopic tube (6) that communicates with the injection flow channel (5).

5. The mold ejection buffer device based on elastic support according to claim 1, characterized in that: A silicone pad (15) is fixedly connected to the bottom end of the rectangular through hole, and a moving block (19) is slidably connected to the inner wall of the mounting cylinder (17).

6. The mold ejection buffer device based on elastic support according to claim 5, characterized in that: The end face of the movable block (19) near the fixed block (18) is chamfered. A second spring (21) is connected between the end face of the movable block (19) away from the fixed block (18) and the inner wall of the mounting cylinder (17). A locking block (20) is slidably connected to the end of the barb (16) away from the fixed block (18). The surface of the locking block (20) is fixedly connected to the surface of the movable block (19).

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