Simple and practical vibrating needle structure of plastic mold

Abstract

The utility model relates to the technical field of flicking needle structures, in particular to a simple and practical flicking needle structure of a plastic mould, which comprises a lower mould base and an upper mould base, two positioning holes are symmetrically arranged on the upper surface of the lower mould base, two positioning rods are symmetrically and fixedly connected on the lower surface of the upper mould base, a cavity is arranged inside the lower mould base, and the cavity is communicated with the positioning holes. And the bottom wall of the inner side wall of the lower die base is slidably connected with an elastic needle. When the upper mold base and the lower mold base are closed, the positioning rod is inserted into the positioning hole, the positioning rod downwards extrudes the connecting plate in the downward moving process, the elastic needle is driven to downwards move, the first spring is compressed, meanwhile, the wedge rack repeatedly extrudes the clamping tooth, the second spring stretches out and draws back repeatedly, and when mold closing is completed, the clamping tooth clamps the wedge rack to prevent the elastic needle from rebounding; when the movable plate is pulled outwards, the clamping teeth do not clamp the wedge rack any more, the first spring extends upwards to push the elastic needles, the elastic needles push the product upwards to complete automatic and rapid demolding, operation is easy, and the practical effect is good.

Description

Technical Field

[0001] This utility model relates to the field of spring pin structure technology, specifically a simple and practical spring pin structure for plastic molds. Background Technology

[0002] Plastic mold is a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. The coordinated changes of the mold's punch, die, and auxiliary molding system can produce a series of plastic parts of different shapes and sizes.

[0003] Demolding of plastic molds refers to the process of removing injection-molded plastic products from the mold. Currently, some plastic molds use manual demolding, which requires high skills and experience from the operator and is prone to product deformation and damage due to improper operation. Therefore, a simple and practical spring pin structure for plastic molds is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a simple and practical spring pin structure for plastic molds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a simple and practical spring pin structure for a plastic mold, comprising a lower mold base and an upper mold base. Two positioning holes are symmetrically opened on the upper surface of the lower mold base, and two positioning rods are symmetrically fixedly connected to the lower surface of the upper mold base. A cavity is formed inside the lower mold base, and a spring pin is slidably connected to the bottom wall of the inner sidewall of the lower mold base. The bottom end of the spring pin extends into the cavity. A sleeve is fixedly connected to the lower surface of the spring pin, and a sleeve rod is slidably connected to the inner sidewall of the sleeve. The bottom end of the sleeve is fixedly connected to the inner bottom wall of the cavity. A spring is fixedly connected between the lower surface of the sleeve and the inner bottom wall of the cavity. Two connecting plates are symmetrically fixedly connected to the bottom of the outer side wall of the spring pin. A wedge rack is fixedly connected to the right side wall of the sleeve. A slide rod is slidably connected to the right side wall of the lower mold base. A movable plate is fixedly connected to the right end of the slide rod. A spring is fixedly connected between the movable plate and the opposite side of the lower mold base. The left end of the slide rod extends into the cavity and is fixedly connected to a locking tooth.

[0006] As a further preferred embodiment of this technical solution: a workbench is fixedly connected to the bottom of the lower mold base, a fixed frame is fixedly connected to the rear side of the upper surface of the workbench, an electric cylinder is installed on the upper surface of the fixed frame, one end of the piston rod of the electric cylinder passes through the upper surface of the fixed frame and is fixedly connected to the upper template, and the top of the upper mold base is fixedly connected to the lower surface of the upper template.

[0007] As a further preferred embodiment of this technical solution: a switch button is installed on the rear surface of the fixing frame, and the electrical output terminal of the switch button is electrically connected to the electrical input terminal of the electric cylinder through a wire.

[0008] As a further preferred embodiment of this technical solution: two connecting blocks are symmetrically fixedly connected to the outer side wall of the tooth, a guide rod is fixedly connected to the right side wall of the connecting block, the right end of the guide rod is fixedly connected to the left side wall of the movable plate, and the guide rod is slidably connected to the lower mold base.

[0009] As a further preferred embodiment of this technical solution: a pull ring is fixedly connected to the right side wall of the movable plate.

[0010] As a further preferred embodiment of this technical solution: four mounting blocks are symmetrically fixedly connected to the bottom of the outer side wall of the lower mold base.

[0011] As a further preferred embodiment of this technical solution: the mounting block and the worktable are connected by connecting bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When the upper and lower mold bases of this utility model are closed, the positioning rod is inserted into the positioning hole. During the downward movement of the positioning rod, it presses down on the connecting plate, causing the spring pin to move downward and compressing the first spring. At the same time, the wedge rack repeatedly presses the retaining teeth, and the second spring repeatedly extends and retracts. When the mold closing is completed, the retaining teeth lock the wedge rack to prevent the spring pin from rebounding. When demolding is required after injection molding, the movable plate is pulled outward, and the retaining teeth no longer lock the wedge rack. The first spring extends and pushes the spring pin upward, and the spring pin pushes the product upward to complete the automatic and fast demolding. The operation is simple and the practical effect is good. It avoids the situation where the product is deformed or damaged due to improper operation by the operator during manual demolding, which is easy to occur. It brings convenience to the use of injection molds. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the mold base from a certain perspective in this utility model.

[0015] Figure 2 This is a cross-sectional view of the mold base from another perspective in this utility model;

[0016] Figure 3 In this utility model Figure 2 Enlarged view of the structure of area A;

[0017] Figure 4 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the lower mold base and the cavity in this utility model;

[0019] Figure 6 In this utility model Figure 5 Enlarged view of the structure of area B;

[0020] Figure 7 In this utility model Figure 5 Enlarged view of the C-region structure;

[0021] Figure 8 This is a schematic diagram of the upper mold base and positioning rod in this utility model;

[0022] Figure 9 This is a schematic diagram of the structure of the lower mold base and positioning hole in this utility model.

[0023] In the picture:

[0024] 1. Lower mold base; 2. Upper mold base; 3. Positioning hole; 4. Positioning rod; 5. Spring pin; 6. Sleeve; 7. Sleeve rod; 8. Spring one; 9. Connecting plate; 10. Wedge rack; 11. Slide rod; 12. Movable plate; 13. Spring two; 14. Clamping tooth; 15. Worktable; 16. Fixing frame; 17. Electric cylinder; 18. Upper template; 19. Switch button; 20. Connecting block; 21. Guide rod; 22. Pull ring; 23. Mounting block; 24. Connecting bolt; 25. Cavity. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. 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.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Please see Figure 1-9This utility model provides a technical solution: a simple and practical spring pin structure for a plastic mold, including a lower mold base 1 and an upper mold base 2. Two positioning holes 3 are symmetrically opened on the upper surface of the lower mold base 1. Two positioning rods 4 are symmetrically fixedly connected to the lower surface of the upper mold base 2. A cavity 25 is opened inside the lower mold base 1. A spring pin 5 is slidably connected to the bottom wall of the inner side wall of the lower mold base 1. The bottom end of the spring pin 5 extends into the cavity 25. A sleeve 6 is fixedly connected to the lower surface of the spring pin 5. A sleeve rod 7 is slidably connected to the inner side wall of the sleeve 6. The bottom end of the sleeve rod 7 is fixedly connected to the sleeve rod 4. A spring 8 is fixedly connected to the bottom wall of the cavity 25. The lower surface of the sleeve 6 is fixedly connected to the bottom wall of the cavity 25. Two connecting plates 9 are symmetrically fixedly connected to the bottom of the outer side wall of the spring pin 5. A wedge rack 10 is fixedly connected to the right side wall of the sleeve 6. A slide rod 11 is slidably connected to the right side wall of the lower mold base 1. A movable plate 12 is fixedly connected to the right end of the slide rod 11. A spring 13 is fixedly connected between the movable plate 12 and the opposite side of the lower mold base 1. The left end of the slide rod 11 extends into the cavity 25 and is fixedly connected to a locking tooth 14.

[0028] Under the above settings, when the upper mold base 2 and the lower mold base 1 are closed, the positioning rod 4 is inserted into the positioning hole 3. During the downward movement of the positioning rod 4, it presses down on the connecting plate 9, causing the spring pin 5 to move downward and compress the spring 8. At the same time, the wedge rack 10 repeatedly presses the retaining tooth 14, and the spring 13 repeatedly extends and retracts. When the mold closing is completed, the retaining tooth 14 locks the wedge rack 10 to prevent the spring pin 5 from rebounding. When demolding is required after injection molding, the movable plate 12 is pulled outward, and the retaining tooth 14 no longer locks the wedge rack 10. The spring 8 extends and pushes the spring pin 5 upward. The spring pin 5 pushes the product upward to complete the automatic and fast demolding. The operation is simple and the practical effect is good. It avoids the situation where the product is deformed or damaged due to improper operation by the operator during manual demolding.

[0029] In this example, specifically: a workbench 15 is fixedly connected to the bottom of the lower mold base 1, a fixed frame 16 is fixedly connected to the rear side of the upper surface of the workbench 15, an electric cylinder 17 is installed on the upper surface of the fixed frame 16, one end of the piston rod of the electric cylinder 17 passes through the upper surface of the fixed frame 16 and is fixedly connected to the upper template 18, and the top of the upper mold base 2 is fixedly connected to the lower surface of the upper template 18; the extension of one end of the piston rod of the electric cylinder 17 drives the upper template 18 and the upper mold base 2 to move downward to complete the mold closing, while the electric cylinder 17 drives the upper mold base 2 to move upward to disengage from the lower mold base 1.

[0030] In this specific example: a switch button 19 is installed on the rear surface of the mounting bracket 16, and the electrical output terminal of the switch button 19 is electrically connected to the electrical input terminal of the electric cylinder 17 through a wire; this facilitates control of the working state of the electric cylinder 17.

[0031] In this specific example: two connecting blocks 20 are symmetrically fixedly connected to the outer side wall of the locking tooth 14, and a guide rod 21 is fixedly connected to the right side wall of the connecting block 20. The right end of the guide rod 21 is fixedly connected to the left side wall of the movable plate 12, and the guide rod 21 is slidably connected to the lower mold base 1. The guide rod 21 provides guidance for the locking tooth 14 and prevents the locking tooth 14 from rotating and causing a deviation in its relative position with the wedge rack 10.

[0032] In this specific example, a pull ring 22 is fixedly connected to the right side wall of the movable plate 12 to facilitate the movement of the movable plate 12.

[0033] In this specific example, four mounting blocks 23 are symmetrically fixedly connected to the bottom of the outer side wall of the lower mold base 1, so that the mounting blocks 23 and the lower mold base 1 can move synchronously.

[0034] In this specific example: the mounting block 23 is connected to the worktable 15 by a connecting bolt 24; this facilitates the fixing of the lower mold base 1.

[0035] The working principle of this utility model is as follows: When the upper mold base 2 and the lower mold base 1 are closed, the positioning rod 4 is inserted into the positioning hole 3. During the downward movement of the positioning rod 4, it presses down on the connecting plate 9, causing the spring pin 5 to move downward and compress the spring 8. At the same time, the wedge rack 10 repeatedly presses the locking tooth 14, and the spring 13 repeatedly extends and retracts. When the mold closing is completed, the locking tooth 14 locks the wedge rack 10 to prevent the spring pin 5 from rebounding. When demolding is required after injection molding, the movable plate 12 is pulled outward, and the locking tooth 14 no longer locks the wedge rack 10. The spring 8 extends and pushes the spring pin 5 upward. The spring pin 5 pushes the product upward to complete the automatic and fast demolding. The operation is simple and the practical effect is good. Thus, it constitutes a simple and practical spring pin structure for plastic molds, avoiding the situation where improper operation by the operator during manual demolding can easily lead to product deformation and damage, and bringing convenience to the use of injection molds.

[0036] 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 simple and practical spring pin structure for a plastic mold, characterized in that: The device includes a lower mold base (1) and an upper mold base (2). Two positioning holes (3) are symmetrically opened on the upper surface of the lower mold base (1). Two positioning rods (4) are symmetrically fixedly connected to the lower surface of the upper mold base (2). A cavity (25) is provided inside the lower mold base (1). A spring pin (5) is slidably connected to the bottom wall of the inner sidewall of the lower mold base (1). The bottom end of the spring pin (5) extends into the cavity (25). A sleeve (6) is fixedly connected to the lower surface of the spring pin (5). A sleeve rod (7) is slidably connected to the inner sidewall of the sleeve (6). The bottom end of the sleeve rod (7) is fixedly connected to the bottom wall of the cavity (25). A spring (8) is fixedly connected between the lower surface of the sleeve (6) and the inner bottom wall of the cavity (25). Two connecting plates (9) are symmetrically fixedly connected to the bottom of the outer side wall of the spring pin (5). A wedge rack (10) is fixedly connected to the right side wall of the sleeve (6). A slide rod (11) is slidably connected to the right side wall of the lower mold base (1). A movable plate (12) is fixedly connected to the right end of the slide rod (11). A spring (13) is fixedly connected between the movable plate (12) and the opposite side of the lower mold base (1). The left end of the slide rod (11) extends into the cavity (25) and is fixedly connected to a locking tooth (14).

2. The simple and practical spring pin structure for plastic molds according to claim 1, characterized in that: The bottom of the lower mold base (1) is fixedly connected to a workbench (15), and a fixed frame (16) is fixedly connected to the rear side of the upper surface of the workbench (15). An electric cylinder (17) is installed on the upper surface of the fixed frame (16). One end of the piston rod of the electric cylinder (17) passes through the upper surface of the fixed frame (16) and is fixedly connected to an upper template (18). The top of the upper mold base (2) is fixedly connected to the lower surface of the upper template (18).

3. The simple and practical spring pin structure for plastic molds according to claim 2, characterized in that: A switch button (19) is installed on the rear surface of the fixing frame (16), and the electrical output terminal of the switch button (19) is electrically connected to the electrical input terminal of the electric cylinder (17) through a wire.

4. The simple and practical spring pin structure for plastic molds according to claim 3, characterized in that: Two connecting blocks (20) are symmetrically fixed to the outer side wall of the tooth (14). A guide rod (21) is fixedly connected to the right side wall of the connecting block (20). The right end of the guide rod (21) is fixedly connected to the left side wall of the movable plate (12). The guide rod (21) is slidably connected to the lower mold base (1).

5. The simple and practical spring pin structure for plastic molds according to claim 4, characterized in that: A pull ring (22) is fixedly connected to the right side wall of the movable plate (12).

6. The simple and practical spring pin structure for plastic molds according to claim 5, characterized in that: The bottom of the outer side wall of the lower mold base (1) is symmetrically fixed with four mounting blocks (23).

7. The simple and practical spring pin structure for plastic molds according to claim 6, characterized in that: The mounting block (23) is screwed to the workbench (15) by a connecting bolt (24).

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