Plastic mold structure for preventing slider from hitting mold

Abstract

The utility model provides a kind of plastic mould structure for preventing slider from hitting mould, including fixed mould base, movable mould base and guiding mechanism, fixed mould base bottom surface is equipped with fixed mould plate, fixed mould plate bottom surface is equipped with counterbore, counterbore top is equipped with wedge tight block, wedge tight block is inclined to set, movable mould base is located in fixed mould base directly below, its top is connected with movable mould plate by pad foot, movable mould plate top surface is equipped with sliding slot, sliding block is slidably arranged in sliding slot, sliding block top surface is equipped with inclined slot and cavity, inclined slot is matched with wedge tight block, and the protruding portion is arranged in the middle of inclined slot and cavity in sliding block top surface, part of counterbore is located directly above cavity, fixed mould plate and movable mould plate are connected with each other by guiding mechanism.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, and in particular to a plastic mold structure that prevents the slider from hitting the mold. Background Technology

[0002] With the development of injection mold technology and the maturity of processing technology, higher requirements have been placed on the structure and dimensions of plastic parts. Undercuts are widely used in product design. In molds, core-pulling mechanisms need to be designed for the undercut areas. Sliders are a very common type of core-pulling mechanism. The stability of the slider's movement and the mold closing accuracy directly affect the reliability and lifespan of the mold. Sliders typically use angled guide pillars to drive their core-pulling and return. If the slider misaligns during mold closing, it will cause a collision, which can damage the mold or even injure the machine operator. Utility Model Content

[0003] In view of this, the present invention proposes a plastic mold structure to prevent the slider from hitting the mold, so as to solve the problems mentioned above.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A plastic mold structure for preventing slider collision includes a fixed mold base, a movable mold base, and a guiding mechanism. The fixed mold base has a fixed template on its bottom surface, and a countersunk hole on its bottom surface. A wedge block is provided at the top of the countersunk hole, and the wedge block is inclined. The movable mold base is located directly below the fixed mold base, and a movable template is connected to its top via a pad. The movable template has a groove on its top surface, and a slider slides within the groove. The slider has an inclined groove and a cavity on its top surface. The inclined groove is inclined and matched with the wedge block. A protrusion is provided on the top surface of the slider between the inclined groove and the cavity. A portion of the countersunk hole is located directly above the cavity. The fixed template and the movable template are connected to each other via the guiding mechanism.

[0006] Preferably, the guiding mechanism includes positioning guide sleeves and positioning guide posts. A plurality of positioning guide sleeves are disposed on the bottom surface of the fixed template, and a plurality of positioning guide posts are disposed on the top surface of the moving template. The positioning guide posts are slidably disposed within the positioning guide sleeves.

[0007] Preferably, the slide also includes a pressure strip and a guide strip, wherein the guide strip is disposed opposite to each other on both sides of the slide block, the pressure strip is disposed opposite to each other on the side wall of the slide groove, and the bottom surface of the pressure strip and the top surface of the guide strip are slidably connected.

[0008] Preferably, the slide has a receiving groove on its side, and a spring is provided in the receiving groove. One end of the spring is fixed to the bottom of the receiving groove, and the other end abuts against the side of the slide. The preload of the spring is in the same direction as the sliding direction of the slider.

[0009] Preferably, bolts are also included, and the wedge block is connected to the bottom surface of the fixed template by bolts.

[0010] Preferably, the protrusion has an inclined surface on one side of the inclined groove, and the inclined surface is used to guide the wedge block to press against the slider when the mold is closed.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By incorporating wedge blocks and inclined grooves, the wedge blocks first contact the slider during mold closing. The resulting opposing force buffers the contact between the fixed and moving mold plates, preventing direct impact and mold damage, thus extending mold life. After mold closing, the cavity is sealed, and subsequent plastic injection avoids rigid collisions during mold closing, further extending mold life.

[0013] 2. A spring is provided. When the spring is in a compressed state, it maintains a certain preload on the slider, so that the side of the slider abuts against the side wall of the slide groove. When the wedge block descends into the inclined groove, it moves the slider. The slide groove slides in the groove, compressing the spring, which can buffer the force on the wedge block and the slider. When the wedge block rises and slides out of the inclined groove, the slider automatically resets under the action of the spring, pushing the slider to slide to the other side of the slide groove. At the same time, the injection molded part in the cavity moves laterally with the slider, thereby completing the demolding operation of the injection molded part. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in 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 preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a plastic mold structure for preventing slider collision according to the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the mold of this utility model when it is being opened.

[0017] Figure 3 This is a schematic cross-sectional view of the mold of this utility model when it is closed;

[0018] Figure 4 This is a schematic diagram of the template structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the moving template structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the mating structure of the pressure strip and the slider of this utility model;

[0021] Figure 7 This is a schematic diagram of the slider of this utility model;

[0022] Reference numerals: 1. Wedge block; 2. Fixed template; 3. Fixed mold base; 4. Moving template; 5. Pad; 6. Moving mold base; 7. Pressure bar; 8. Slider; 9. Spring; 10. Bolt; 11. Positioning guide post; 12. Positioning guide sleeve; 13. Slide groove; 14. Receiving groove; 15. Guide bar; 16. Inclined surface; 17. Sloping groove; 18. Countersunk hole; 19. Cavity; 20. Protrusion. Detailed Implementation

[0023] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0024] See Figures 1 to 7 This utility model provides a plastic mold structure for preventing slider 8 from colliding with the mold, including a fixed mold base 3, a moving mold base 6, and a guiding mechanism. The bottom surface of the fixed mold base 3 is provided with a fixed template 2, and the bottom surface of the fixed template 2 is provided with a countersunk hole 18. The top of the countersunk hole 18 is provided with a wedge block 1, which is inclined. The moving mold base 6 is located directly below the fixed mold base 3, and its top is connected to a moving template 4 through a pad 5. The top surface of the moving template 4 is provided with a sliding groove 13, and a slider 8 is slidably disposed in the sliding groove 13. The top surface of the slider 8 is provided with an inclined groove 17 and a cavity 19. The inclined groove 17 is inclinedly matched with the wedge block 1. The top surface of the slider 8 is provided with a protrusion 20 located between the inclined groove 17 and the cavity 19. A part of the countersunk hole 18 is located directly above the cavity 19. The fixed template 2 and the moving template 4 are connected to each other through the guiding mechanism.

[0025] When the mold structure is in the injection molding operation, the moving mold base 6 is first installed on the operating platform, and then the fixed mold plate 2 is lowered. Under the guidance of the guiding mechanism, the fixed mold plate 2 descends vertically. During this process, the wedge block 1 first descends into the inclined groove 17, and the side of the wedge block 1 first abuts against the inner wall of the inclined groove 17. As the wedge block 1 continues to descend, the slider 8 is pushed by the wedge block 1 and moves a predetermined distance along the sliding groove 13. When the bottom surface of the fixed mold plate 2 and the top surface of the moving mold plate 4 coincide, the mold is closed. Throughout the process, the wedge block 1 first contacts the slider 8, and the resulting opposing force can buffer the contact between the fixed mold plate 2 and the moving mold plate 4, avoiding direct mold collision and thus preventing mold damage, thereby improving the service life of the mold. After the mold is closed, the cavity 19 is in a closed state, and then the plastic injection operation is performed.

[0026] Preferably, the guiding mechanism includes positioning guide sleeves 12 and positioning guide posts 11. Multiple positioning guide sleeves 12 are disposed on the bottom surface of the fixed template 2, and multiple positioning guide posts 11 are disposed on the top surface of the movable template 4. The positioning guide posts 11 are slidably disposed within the positioning guide sleeves 12.

[0027] As the fixed template 2 descends and fits into the moving template 4, the positioning guide post 11 is slidably positioned within the positioning guide sleeve 12. This ensures the positional accuracy of the fixed template 2 and the moving template 4 when they fit together. Furthermore, after the mold is closed, it avoids the influence of lateral collisions, thus improving the reliability of the mold.

[0028] Preferably, the slide also includes a pressure strip 7 and a guide strip 15. The guide strip 15 is disposed opposite to each other on both sides of the slider 8, and the pressure strip 7 is disposed opposite to each other on the side wall of the slide groove 13. The bottom surface of the pressure strip 7 and the top surface of the guide strip 15 are slidably connected.

[0029] The pressure strip 7 and the slide groove 13 together form a guiding sliding groove, allowing the guide strip 15 to slide along the slide groove 13. When it is necessary to inspect the slider 8, the pressure strip 7 can be removed first, and then the slider 8 can be removed, which is beneficial for regular maintenance of the slider 8.

[0030] Preferably, the slide groove 13 has a receiving groove 14 on its side, and a spring 9 is provided in the receiving groove 14. One end of the spring 9 is fixed to the bottom of the receiving groove 14, and the other end abuts against the side of the slide groove 13. The preload of the spring 9 is in the same direction as the sliding direction of the slider 8.

[0031] Spring 9 is in a compressed state, maintaining a certain preload on slider 8, so that the side of slider 8 abuts against the side wall of slide groove 13. When wedge block 1 descends into inclined groove 17, it moves slider 8, and slides within slide groove 13, compressing spring 9. When wedge block 1 rises and slides out of inclined groove 17, slider 8 automatically resets under the action of spring 9. Spring 9 pushes slider 8 to slide towards the other side of slide groove 13. At the same time, the injection molded part in cavity 19 moves laterally with slider 8, thereby completing the demolding operation of injection molded part.

[0032] Preferably, it also includes bolts 10, and the wedge block 1 is connected to the bottom surface of the fixed template 2 by bolts 10.

[0033] The wedge block 1 is connected to the bottom surface of the fixed template 2 by bolts 10. When it is necessary to inspect the wedge block 1, the bolts 10 can be loosened to facilitate the disassembly of the wedge block 1.

[0034] Preferably, the protrusion 20 is provided with an inclined surface 16 on one side of the inclined groove 17, and the inclined surface 16 is used to guide the wedge block 1 to press against the slider 8 when the mold is closed.

[0035] The inclined surface 16 is wider at the top and narrower at the bottom. When the wedge block 1 descends, it can guide it and prevent the slider 8 from deviating. The wedge block 1 can also be smoothly pressed into the inclined groove 17 to complete the movement of the slider 8.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic mold structure for preventing slider collision with the mold, characterized in that, The system includes a fixed mold base, a moving mold base, and a guiding mechanism. The fixed mold base has a fixed template on its bottom surface, and a countersunk hole on its bottom surface. A wedge block is provided at the top of the countersunk hole, and the wedge block is inclined. The moving mold base is located directly below the fixed mold base, and its top is connected to the moving template via a pad. The moving template has a groove on its top surface, and a slider slides within the groove. The slider has an inclined groove and a cavity on its top surface. The inclined groove is inclined and matched with the wedge block. A protrusion is provided on the top surface of the slider between the inclined groove and the cavity. A portion of the countersunk hole is located directly above the cavity. The fixed template and the moving template are connected to each other through the guiding mechanism.

2. The plastic mold structure for preventing slider collision according to claim 1, characterized in that, The guiding mechanism includes positioning guide sleeves and positioning guide posts. Multiple positioning guide sleeves are disposed on the bottom surface of the fixed template, and multiple positioning guide posts are disposed on the top surface of the moving template. The positioning guide posts are slidably disposed within the positioning guide sleeves.

3. The plastic mold structure for preventing slider collision according to claim 1, characterized in that, It also includes pressure strips and guide strips. The guide strips are disposed opposite each other on both sides of the slider, and the pressure strips are disposed opposite each other on the side wall of the slide groove. The bottom surface of the pressure strips and the top surface of the guide strips are slidably connected.

4. The plastic mold structure for preventing slider collision according to claim 1, characterized in that, The slide has a receiving groove on its side, and a spring is installed in the receiving groove. One end of the spring is fixed to the bottom of the receiving groove, and the other end abuts against the side of the slide. The preload of the spring is in the same direction as the sliding direction of the slider.

5. A plastic mold structure for preventing slider collision according to claim 1, characterized in that, It also includes bolts, and the wedge block is connected to the bottom surface of the fixed template by bolts.

6. The plastic mold structure for preventing slider collision according to claim 1, characterized in that, The protrusion is located on one side of the inclined groove and has an inclined surface. The inclined surface is used to guide the wedge block to press against the slider when the mold is closed.

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