Mould opening traction mechanism

Abstract

The utility model provides a mold opening traction mechanism which comprises a base, a supporting seat, a top seat, a left mold and a right mold, the left mold and the right mold are symmetrically arranged, and a mold closing cavity used for opening and closing the two molds is formed between the supporting seat and the top seat; the device further comprises a lifting air cylinder, a connecting block, a first traction assembly and a second traction assembly, the first traction assembly applies downward inclined force to the connecting block through a spring arranged in a first inclined guide groove, and therefore when the supporting base is separated from the top base, the connecting block is pushed in the outward inclined direction, and the connecting block is pulled out. Furthermore, a second traction assembly is arranged on the supporting seat, and during separation, the connecting block is directly pulled outwards in the horizontal direction, so that it is guaranteed that the supporting seat can pull the mold outwards when the supporting seat descends to open the mold, and therefore the problem of mold opening failure or mold pressing is avoided; the production efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold opening and pulling mechanism. Background Art

[0002] Some molds are produced by closing two molds in the horizontal direction to form a complete cavity for injection molding. Currently, this type of mold needs to be connected to the outside of the mold through a pulling device and a connecting piece to pull the mold open when opening and closing the mold, and separate the mold from the injection molding seat at the top to remove the mold. When the two steps are carried out at the same time, it is easy to cause asynchrony, so that the two mechanisms conflict with each other and cause damage to the mold.

[0003] In view of this, the applicant filed this application after studying the existing technology. Utility Model Content

[0004] The utility model provides a mold opening and pulling mechanism, aiming to improve at least one of the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides a mold opening and pulling mechanism, comprising a base, a support seat, a top seat and two symmetrically arranged molds on the left and right, the support seat is arranged between the base and the top seat, and a mold cavity for opening and closing the two molds is arranged between the support seat and the top seat; a lifting cylinder for driving the support seat away from or close to the top seat is arranged on the base; the end of the mold away from the mold closing is fixedly connected with a connecting block; it also includes a first pulling assembly and a second pulling assembly, the first pulling assembly includes a spring, a first inclined guide groove is arranged between the bottom end of the top seat and the upper end of the connecting block, the first inclined guide groove is arranged obliquely outward from top to bottom, and the spring is installed in the first inclined guide groove, the upper end is abutted against the top seat, and the lower end is abutted against the connecting block.

[0006] As a further optimization, the first pulling assembly also includes an inclined guide column, a second inclined guide groove is coaxially arranged on the first inclined guide groove, the upper end of the second inclined guide groove extends into the top seat, and the lower end passes through the connecting block and extends into the support seat, the inclined guide column passes through the spring, and is installed in the second inclined guide groove.

[0007] As a further optimization, a guide block is also provided on the support seat, and a guide rail is protruding from one side end of the guide block close to the connecting block, and a third inclined guide groove adapted to slide with the guide rail is provided on one side of the connecting block.

[0008] As a further optimization, a slide groove is horizontally arranged at the upper end of the support seat; the second pulling assembly includes a slider, a support frame, a rotating screw, a rotating tooth and a rack, the slider is slidably connected to the slide groove, the upper end of the slider is adapted to be inserted into the bottom of the connecting block, and the support frame is fixed in the slide groove; the rotating screw is rotatably arranged on the support frame, and the threaded end is rotatably connected to the slider; the rotating tooth is coaxially fixed on the rotating screw, the upper end of the rack is fixed to the bottom of the top seat, and the lower part is meshed with the rotating tooth.

[0009] As a further optimization, a vertical hole suitable for the rack to extend into is provided on the support seat.

[0010] As a further optimization, a first wear-resistant block is arranged between the support seat and the connecting block.

[0011] As a further optimization, a second wear-resistant block is arranged between the top seat and the connecting block.

[0012] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0013] The present application provides a mold opening and pulling mechanism, comprising a base, a support base, a top base and two symmetrically arranged molds on the left and right, a mold cavity for opening and closing the two molds is arranged between the support base and the top base; it also includes a lifting cylinder, a connecting block, a first pulling assembly and a second pulling assembly, the first pulling assembly applies an inclined downward force to the connecting block through a spring arranged in a first inclined guide groove, so that when the support base is separated from the top base, the connecting block is pushed in an inclined outward direction, so that the connecting block can pull the mold for separation, and further by arranging a second pulling assembly on the support base, when separating, the connecting block is directly pulled outward horizontally to ensure that the mold can be pulled outward when the support base is lowered for mold opening, thereby avoiding mold opening failure or mold pressing problems, affecting production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a half-section partial structural schematic diagram of a mold opening and pulling mechanism of the utility model;

[0016] Figure 2 This utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0017] Figure 3It is a partial schematic diagram of the top of the connecting block of the utility model;

[0018] Markings in the figure: 1. base; 2. support seat; 3. top seat; 4. mold; 5. mold cavity; 6. lifting cylinder; 7. connecting block; 8. guide block; 9. guide rail; 10. first oblique guide groove; 11. second oblique guide groove; 12. third oblique guide groove; 13. spring; 14. oblique guide column; 15. slide groove; 16. slider; 17. support frame; 18. rotating screw; 19. rotating tooth; 20. rack; 21. vertical hole; 22. first wear-resistant block; 23. second wear-resistant block. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Depend on Figures 1 to 3As shown, the embodiment of the utility model provides a mold opening and pulling mechanism, including a base 1, a support base 2, a top base 3 and two symmetrically arranged molds 4 on the left and right, wherein the cavities in the two molds 4 are not necessarily symmetrical and the same, and the upper ends are connected to the injection end in the top base 3, which will not be described in detail here. The support base 2 is arranged between the base 1 and the top base 3, and a mold closing cavity 5 for the opening and closing movement of the two molds 4 is arranged between the support base 2 and the top base 3; a lifting cylinder 6 for driving the support base 2 away from or close to the top base 3 is arranged on the base 1, and the top base 3 is fixed by other equipment in various ways, which will not be described in detail in this embodiment; a connection block 7 is fixedly connected to one end of the mold 4 away from the mold closing, and the two molds 4 are driven to close or open the molds through the connection blocks 7 on both sides, respectively, to perform injection molding and mold removal operations. Among them, a guide block 8 is also arranged on the support base 2, and a guide rail 9 is protruding from one side end of the guide block 8 close to the connection block 7, and a third inclined guide groove 12 adapted to slide with the guide rail 9 is arranged on one side of the connection block 7. The guide rail 9 is inclined from top to bottom in the direction of mold opening, so that when the mold 4 is in the mold closing state, when the lifting cylinder 6 outputs to control the support seat 2 to descend and move away from the top seat 3, the connecting block 7 will move outward along the guide rail 9 when it descends, thereby pulling the mold 4 outward to open the mold.

[0021] Preferably, it also includes a first pulling assembly and a second pulling assembly, wherein the first pulling assembly includes a spring 13, a first oblique guide groove 10 is provided between the bottom end of the top seat 3 and the upper end of the connecting block 7, the first oblique guide groove 10 is provided obliquely outward from top to bottom, and the spring 13 is installed in the first oblique guide groove 10, with the upper end abutting against the top seat 3, and the lower end abutting against the connecting block 7. By providing the first oblique guide groove 10 with the same oblique direction as the direction in which the connecting block 7 needs to move, and providing the spring 13, when the support seat 2 descends, the spring 13 pushes the connecting block 7 in the oblique direction, thereby pulling the mold 4, so that the steps of mold opening and separation of the mold from the injection end can be completed synchronously, thereby increasing the mold opening success rate and avoiding the problem of damage to the mold such as compression molding.

[0022] Furthermore, the first pulling assembly further includes an inclined guide column 14, a second inclined guide groove 11 is coaxially arranged on the first inclined guide groove 10, the upper end of the second inclined guide groove 11 extends into the top seat 3, and the lower end penetrates the connecting block 7 and extends into the supporting seat 2, and the inclined guide column 14 passes through the spring 13 and is installed in the second inclined guide groove 11. The second inclined guide column 14 and the connecting block 7 can slide, and by setting the inclined guide column 14, not only the moving direction of the connecting block 7 can be limited, but also the stability of the position of the spring 13 can be ensured, so that the force generated by the spring 13 can be better used to push the connecting block 7 to move.

[0023] Preferably, a slide groove 15 is horizontally arranged at the upper end of the support seat 2; the second pulling assembly includes a slider 16, a support frame 17, a rotating screw 18, a rotating tooth 19 and a rack 20; the slider 16 is slidably connected to the slide groove 15, the upper end of the slider 16 is adapted to be inserted into the bottom of the connecting block 7, and the support frame 17 is fixed in the slide groove 15; the rotating screw 18 is rotatably arranged on the support frame 17, and the threaded end is rotatably connected to the slider 16; the rotating tooth 19 is coaxially fixed on the rotating screw 18, the upper end of the rack 20 is fixed at the bottom of the top seat 3, and the lower part is meshed with the rotating tooth 19. Among them, one side of the rotating screw 18 is installed on the support frame 17, and the two can rotate relative to each other. The threaded end of the rotating screw 18 and the slider 16 form a screw structure, so that when rotating, the slider 16 is controlled to move inward or outward in the slide groove 15, thereby driving the connecting block 7 to be pulled outward. When the support base 2 descends, the rotating teeth 19 will move relative to the tooth ends on the rack 20 as they descend together, so that the rotating screw 18 is driven by the rotation of the rotating teeth 19 by the rack 20. Thus, the two pulling components ensure that the connecting block 7 can pull the mold 4 to complete the mold opening, avoiding errors such as film pressing.

[0024] In order to allow the rack 20 to have enough space length for rotation operation, a vertical hole 21 suitable for the rack 20 to extend into is set on the support seat 2. The lower part of the rack 20 is located in the vertical hole 21 in the mold closing state, and the rotating tooth 19 rises from the vertical hole 21 and rotates when separating.

[0025] Preferably, a first wear-resistant block 22 is provided between the support seat 2 and the connecting block 7. The material friction coefficient of the first wear-resistant block 22 is relatively small. By providing the first wear-resistant block 22, when the connecting block 7 descends with the support seat 2, it can not only prevent the connecting block 7 from wearing the support seat 2, but also make the connecting block 7 move more smoothly.

[0026] Preferably, a second wear-resistant block 23 is provided between the top seat 3 and the connecting block 7. The material friction coefficient of the second wear-resistant block 23 is small. By providing the second wear-resistant block 23, when the connecting block 7 descends with the support seat 2, it can not only avoid the connecting block 7 from wearing the top seat 3, but also make the connecting block 7 move more smoothly.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mold opening pulling mechanism, characterized in that: It comprises a base, a support base, a top base and two symmetrically arranged molds on the left and right, wherein the support base is arranged between the base and the top base, and a mold clamping cavity for opening and closing the two molds is arranged between the support base and the top base; a lifting cylinder for driving the support base away from or close to the top base is arranged on the base; and a connecting block is fixedly connected to one end of the mold away from the mold clamping; It also includes a first pulling component and a second pulling component, the first pulling component includes a spring, a first inclined guide groove is arranged between the bottom end of the top seat and the upper end of the connecting block, the first inclined guide groove is arranged to be inclined outward from top to bottom, the spring is installed in the first inclined guide groove, the upper end is against the top seat, and the lower end is against the connecting block.

2. A mold opening and pulling mechanism according to claim 1, characterized in that The first pulling assembly also includes an inclined guide column, a second inclined guide groove is coaxially arranged on the first inclined guide groove, the upper end of the second inclined guide groove extends into the top seat, and the lower end passes through the connecting block and extends into the support seat, the inclined guide column passes through the spring, and is installed in the second inclined guide groove.

3. A mold opening and pulling mechanism according to claim 1, characterized in that A guide block is also provided on the support seat, and a guide rail is protruding from one side end of the guide block close to the connecting block, and a third inclined guide groove adapted to slide with the guide rail is provided on one side of the connecting block.

4. A mold opening and pulling mechanism according to claim 1, characterized in that A slide groove is horizontally arranged at the upper end of the support seat; the second pulling assembly includes a slider, a support frame, a rotating screw, a rotating tooth and a rack, the slider is slidably connected to the slide groove, the upper end of the slider is adapted to be inserted into the bottom of the connecting block, and the support frame is fixed in the slide groove; the rotating screw is rotatably arranged on the support frame, and the threaded end is rotatably connected to the slider; the rotating tooth is coaxially fixed on the rotating screw, the upper end of the rack is fixed to the bottom of the top seat, and the lower part is meshed with the rotating tooth.

5. A mold opening and pulling mechanism according to claim 4, characterized in that The support seat is provided with a vertical hole suitable for the rack to extend into.

6. A mold opening and pulling mechanism according to claim 1, characterized in that A first wear-resistant block is arranged between the support seat and the connecting block.

7. A mold opening and pulling mechanism according to claim 1, characterized in that A second wear-resistant block is arranged between the top seat and the connecting block.

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