Injection mold convenient to eject

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold convenient to eject, which comprises a base, at least one guide post is fixedly connected to the upper surface of the base, a connecting plate is sleeved on the surface of the guide post, at least one ejector pin component is arranged at the top of the connecting plate, and the ejector pin component is connected with the guide post. The ejector pin assembly comprises a sleeve, an ejector pin body, a movable plate, a buffer spring, a sliding groove, a sliding block and a buffer pad, and the sleeve is arranged on the top side of the connecting plate. According to the injection mold convenient to eject out, by arranging the ejector pin assembly, when a workpiece is ejected out, the dual-buffering effect can be achieved, the workpiece is prevented from being scratched by an ejector pin, when the workpiece is ejected out of an ejector pin main body, the top end of the ejector pin main body is stressed, the ejector pin main body drives a movable plate to move downwards, a buffering spring deforms in the moving process, and the workpiece is prevented from being scratched. The buffering effect can be achieved through deformation of the buffering springs, residual impact force can be absorbed in cooperation with the buffering cushion, the double-buffering effect is achieved, and the workpiece is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold that is convenient for ejection. Background Art

[0002] Moulds are various moulds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. Injection moulds are the main molding equipment that presses hot raw materials with molding moulds and makes plastic products of various shapes after cooling.

[0003] According to the application number 202123090169.5, an injection mold for convenient ejection of products is disclosed. The arc-shaped limit block is set so that the ejection block can maintain stable movement during the ejection process. At the same time, the positioning block on the side of the ejection block can effectively limit the movement of the ejection block. The double-layer ejection structure is set so that the ejection structures inside the upper and lower molds can maintain synchronous operation, which is convenient for effective ejection of the product.

[0004] The following problems still exist in actual use:

[0005] At present, traditional injection molding production molds need to be demolded after the injection molded workpiece is formed. During the demolding process, most of them are ejected from the mold cavity manually or by an ejector structure. However, traditional ejector structures are mostly ejectors, which can easily scratch the surface of the workpiece during the ejection process, causing damage to the workpiece and affecting the quality of the workpiece. Manual removal is also time-consuming. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an injection mold that is easy to eject and has a double cushioning effect when the ejector pin ejects the workpiece, thereby avoiding scratches on the workpiece surface and facilitating personnel to adjust the ejection height of the ejector pin. It has the advantages of high flexibility and solves the problems raised in the background technology.

[0007] The utility model provides the following technical solution: an injection mold for easy ejection, comprising a base, at least one guide column is fixedly connected to the upper surface of the base, a connecting plate is sleeved on the surface of the guide column, and at least one ejector pin assembly is arranged on the top of the connecting plate;

[0008] The ejector assembly includes a sleeve, an ejector body, a movable plate, a buffer spring, a slide groove, a slider and a buffer pad. The sleeve is arranged on the top side of the connecting plate, the ejector body is arranged inside the sleeve, the bottom end of the ejector body is arranged with a movable plate, the bottom surface of the ejector body is arranged with a buffer spring, both side surfaces of the sleeve are arranged with slide grooves, both side surfaces of the movable plate are arranged with sliders, and the sliders are located inside the slide grooves, and the buffer pad is arranged at the inner bottom of the sleeve.

[0009] Preferably, blocks are fixedly connected to both ends of the upper surface of the base, and a driving assembly is provided on one side of the block and the connecting plate, and the driving assembly includes a fixed block, an adjusting groove, a stud, a nut, a driving cylinder and a roller. A fixed block is installed on one side surface of the connecting plate, and one side of the fixed block is an inclined surface, an adjusting groove is provided inside the fixed block, a stud is fixedly connected to one side surface of the connecting plate, and a nut is threadedly connected to the surface of the stud, a driving cylinder is fixedly installed on one side surface of the block, and the output shaft of the driving cylinder is fixedly connected to the roller.

[0010] Preferably, the sleeve is fixedly connected to the top side of the connecting plate, the ejector body is slidably connected to the inside of the sleeve, the movable plate is fixedly connected to the bottom end of the ejector body, the buffer spring is sleeved on the surface of the ejector body, the slide groove is opened on both side outer walls of the sleeve, the slider is fixedly connected to both sides of the movable plate, the buffer pad is placed at the inner bottom of the sleeve, and the top is in contact with the movable plate.

[0011] Preferably, a lower mold is installed on the top of the block, guide rods are fixedly connected to the four corners of the upper surface of the lower mold, an upper mold is slidably connected to the surface of the guide rods, and a flow channel is installed on the top of the upper mold.

[0012] Preferably, positioning rods are fixedly connected to the four corners of the upper surface of the lower mold, and positioning holes corresponding to the positioning rods are opened at the four corners of the lower surface of the upper mold.

[0013] Preferably, the top end of the buffer spring is fixedly connected to the inner top wall of the sleeve, and the bottom end of the buffer spring is fixedly connected to the movable plate.

[0014] Preferably, the stud is located inside the adjustment slot, and one side surface of the nut is tightly fitted with the outer side of the fixing block.

[0015] Preferably, reset disc springs are fixedly connected at the four corners of the upper surface of the connecting plate, and the top of the reset disc spring is fixedly connected to the bottom of the lower mold.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The injection mold that is easy to eject can achieve a double buffering effect when ejecting a workpiece by providing an ejector assembly to prevent the workpiece from being scratched by the ejector. When the ejector body ejects the workpiece, the top of the ejector body is subjected to force, so that it drives the movable plate to move downward, and the buffer spring is deformed during the movement. The deformation of the buffer spring can achieve a buffering effect, and the remaining impact force can be absorbed by the buffer pad, thereby achieving a double buffering effect and effectively protecting the workpiece.

[0018] 2. The injection mold that is easy to eject can be driven by a cylinder to eject the workpiece by providing a driving component. It has a high degree of automation and is convenient for personnel to eject the workpiece for demoulding. The ejection height of the ejector can be adjusted by loosening the nut and adjusting the horizontal position of the fixed block. The operation is simple and easy to understand, and the flexibility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an injection mold device that is convenient for ejection provided by the utility model;

[0020] Figure 2 A schematic diagram of the lower mold structure of an injection mold that is convenient for ejection provided by the utility model;

[0021] Figure 3 A schematic diagram of the structure of an ejector pin assembly for an injection mold that is convenient for ejection provided by the utility model;

[0022] Figure 4 The utility model provides an injection mold which is convenient for ejection Figure 1 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. base; 2. guide column; 3. connecting plate; 4. ejector assembly; 401. sleeve; 402. ejector body; 403. movable plate; 404. buffer spring; 405. slide groove; 406. slider; 407. buffer pad; 5. drive assembly; 501. fixed block; 502. adjustment groove; 503. stud; 504. nut; 505. drive cylinder; 506. roller; 6. block; 7. reset disc spring; 8. lower mold; 9. guide rod; 10. upper mold; 11. runner; 12. positioning rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 3, an injection mold for easy ejection, comprising a base 1, at least one guide column 2 is fixedly connected to the upper surface of the base 1, a connecting plate 3 is sleeved on the surface of the guide column 2, at least one ejector assembly 4 is arranged on the top of the connecting plate 3, the ejector assembly 4 comprises a sleeve 401, an ejector body 402, a movable plate 403, a buffer spring 404, a slide groove 405, a slider 406 and a buffer pad 407, the sleeve 401 is arranged on the top side of the connecting plate 3, the ejector body 402 is arranged inside the sleeve 401, the movable plate 403 is arranged at the bottom end of the ejector body 402, the buffer spring 404 is arranged on the bottom surface of the ejector body 402, the slide grooves 405 are arranged on both side surfaces of the sleeve 401, the sliders 406 are arranged on both side surfaces of the movable plate 403, and the sliders 406 are located inside the slide grooves 405, and the buffer pad 407 is arranged at the inner bottom of the sleeve 401;

[0026] By providing the ejector pin assembly 4, a double buffering effect can be achieved when ejecting the workpiece, thereby preventing the workpiece from being scratched by the ejector pin and effectively protecting the workpiece.

[0027] See also Figures 1 to 3 , the sleeve 401 is fixedly connected to the top side of the connecting plate 3, the ejector body 402 is slidably connected to the inside of the sleeve 401, the movable plate 403 is fixedly connected to the bottom end of the ejector body 402, the buffer spring 404 is sleeved on the surface of the ejector body 402, the slide groove 405 is provided on the outer walls of both sides of the sleeve 401, the slider 406 is fixedly connected to both sides of the movable plate 403, the buffer pad 407 is placed at the inner bottom of the sleeve 401, and the top is fitted with the movable plate 403, the top of the buffer spring 404 is fixedly connected to the inner top wall of the sleeve 401, and the bottom end of the buffer spring 404 is fixedly connected to the movable plate 403;

[0028] When the ejector body 402 ejects the workpiece, the top end of the ejector body 402 is subjected to force, causing it to drive the movable plate 403 to move downward. During the movement, the buffer spring 404 is deformed. The deformation of the buffer spring 404 can play a buffering role, and the buffer pad 407 can absorb the remaining impact force, thereby achieving a double buffering effect.

[0029] See also Figure 1 and Figure 4, blocks 6 are fixedly connected to both ends of the upper surface of the base 1, and a driving assembly 5 is provided on one side of the block 6 and the connecting plate 3. The driving assembly 5 includes a fixed block 501, an adjusting groove 502, a stud 503, a nut 504, a driving cylinder 505 and a roller 506. A fixed block 501 is installed on one side surface of the connecting plate 3, and one side of the fixed block 501 is an inclined surface. An adjusting groove 502 is opened inside the fixed block 501, a stud 503 is fixedly connected to one side surface of the connecting plate 3, and a nut 504 is threadedly connected to the surface of the stud 503. A driving cylinder 505 is fixedly installed on one side surface of the block 6, and a roller 506 is fixedly connected to the output shaft of the driving cylinder 505. The stud 503 is located inside the adjusting groove 502, and one side surface of the nut 504 is tightly fitted with the outer side of the fixed block 501;

[0030] The drive assembly 5 is provided to facilitate personnel to eject the workpiece for demoulding operation, and by loosening the nut 504 and adjusting the horizontal position of the fixing block 501, the ejection height of the ejector can be adjusted, which is convenient for personnel to operate and understand.

[0031] See also Figure 1 to Figure 2 A lower mold 8 is installed on the top of the block 6, and a guide rod 9 is fixedly connected to the four corners of the upper surface of the lower mold 8. The surface of the guide rod 9 is slidably connected to the upper mold 10. A flow channel 11 is installed on the top of the upper mold 10. The four corners of the upper surface of the lower mold 8 are fixedly connected to the positioning rod 12. The four corners of the lower surface of the upper mold 10 are provided with positioning holes corresponding to the positioning rod 12. The four corners of the upper surface of the connecting plate 3 are fixedly connected to the reset disc spring 7, and the top of the reset disc spring 7 is fixedly connected to the bottom of the lower mold 8;

[0032] During the mold closing process, precise positioning is performed through the guide rod 9 and the positioning rod 12. After the demoulding is completed, the driving cylinder 505 drives the roller 506 to reset, and then the connecting plate 3 and the ejector assembly 4 are reset by the reset disc spring 7.

[0033] In the utility model, the working principle of the device is as follows:

[0034] The hot raw material is added from the runner 11 into the molding cavity between the upper mold 10 and the lower mold 8 for pressing and molding. During the mold closing process, the guide rod 9 and the positioning rod 12 are used for precise positioning. When the mold is cooled and the molded workpiece needs to be demoulded, the upper mold 10 is separated from the lower mold 8, and then the driving cylinder 505 is started to push the roller 506 to move horizontally, so that the roller 506 pushes the inclined surface on the fixed block 501. Under the limiting action of the guide column 2, the fixed block 501 and the connecting plate 3 can be pushed upward, and the ejector assembly 4 is driven to move upward at the same time. The top of the ejector body 402 gradually applies a supporting force to the workpiece to eject the workpiece. When the ejector body 402 ejects the workpiece, the top of the ejector body 402 is subjected to force, so that it drives the movable plate 403 to move downward, and the buffer spring 404 is deformed during the movement. The deformation of the buffer spring 404 can play a buffering role, and the remaining impact force can be absorbed by the buffer pad 407, so as to achieve a double buffering effect, which can protect the workpiece from scratches. When the ejector body 402 moves, it can drive the slider 406 to slide in the slide groove 405, so that the ejector body 402 moves more smoothly.

[0035] When the ejection height needs to be adjusted, the personnel loosens the nut 504 to increase the distance between the nut 504 and the fixed block 501, then moves the horizontal position of the fixed block 501, and adjusts the ejection height of the ejector assembly 4 by adjusting the contact position between the roller 506 and the inclined surface of the fixed block 501. After the adjustment is completed, tighten the nut 504 so that one side of it is tightly fitted with the fixed block 501 to fix the ejection position.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for easy ejection, comprising a base (1), characterized in that: At least one guide column (2) is fixedly connected to the upper surface of the base (1); a connecting plate (3) is sleeved on the surface of the guide column (2); and at least one ejector assembly (4) is arranged on the top of the connecting plate (3); The ejector assembly (4) comprises a sleeve (401), an ejector body (402), a movable plate (403), a buffer spring (404), a slide groove (405), a slider (406) and a buffer pad (407); the sleeve (401) is arranged on the top side of the connecting plate (3); the ejector body (402) is arranged inside the sleeve (401); the movable plate (403) is arranged at the bottom end of the ejector body (402); the buffer spring (404) is arranged on the bottom surface of the ejector body (402); the slide grooves (405) are arranged on both side surfaces of the sleeve (401); the sliders (406) are arranged on both side surfaces of the movable plate (403); and the sliders (406) are located inside the slide grooves (405); and the buffer pad (407) is arranged at the inner bottom of the sleeve (401).

2. The injection mold for easy ejection according to claim 1, characterized in that: Blocks (6) are fixedly connected to both ends of the upper surface of the base (1); a driving assembly (5) is arranged on one side of the block (6) and the connecting plate (3); the driving assembly (5) comprises a fixed block (501), an adjustment slot (502), a stud (503), a nut (504), a driving cylinder (505) and a roller (506); a fixed block (501) is mounted on one side of the connecting plate (3); one side of the fixed block (501) is an inclined surface; an adjusting slot (502) is provided inside the fixed block (501); a stud (503) is fixedly connected to one side of the connecting plate (3); a nut (504) is threadedly connected to the surface of the stud (503); a driving cylinder (505) is fixedly mounted on one side of the block (6); and an output shaft of the driving cylinder (505) is fixedly connected to the roller (506).

3. The injection mold for easy ejection according to claim 1, characterized in that: The sleeve (401) is fixedly connected to the top side of the connecting plate (3), the ejector body (402) is slidably connected to the inside of the sleeve (401), the movable plate (403) is fixedly connected to the bottom end of the ejector body (402), the buffer spring (404) is sleeved on the surface of the ejector body (402), the slide groove (405) is provided on both sides of the outer wall of the sleeve (401), the slider (406) is fixedly connected to both sides of the movable plate (403), and the buffer pad (407) is placed on the inner bottom of the sleeve (401), and the top is in contact with the movable plate (403).

4. The injection mold for easy ejection according to claim 2, characterized in that: A lower mold (8) is installed on the top of the block (6), and guide rods (9) are fixedly connected to the four corners of the upper surface of the lower mold (8). An upper mold (10) is slidably connected to the surface of the guide rod (9), and a flow channel (11) is installed on the top of the upper mold (10).

5. The injection mold for easy ejection according to claim 4, characterized in that: Positioning rods (12) are fixedly connected at the four corners of the upper surface of the lower mold (8), and positioning holes corresponding to the positioning rods (12) are opened at the four corners of the lower surface of the upper mold (10).

6. The injection mold for easy ejection according to claim 1, characterized in that: The top end of the buffer spring (404) is fixedly connected to the inner top wall of the sleeve (401), and the bottom end of the buffer spring (404) is fixedly connected to the movable plate (403).

7. The injection mold for easy ejection according to claim 2, characterized in that: The stud (503) is located inside the adjustment slot (502), and a side surface of the nut (504) is tightly fitted to the outer side of the fixing block (501).

8. The injection mold for easy ejection according to claim 2, characterized in that: Reset disc springs (7) are fixedly connected at the four corners of the upper surface of the connecting plate (3), and the top of the reset disc spring (7) is fixedly connected to the bottom of the lower mold (8).

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