Zero-angle small insert pin insertion core-pulling structure

Abstract

The utility model relates to the technical field of molding, and discloses a zero-angle small insert pin insertion core-pulling structure which comprises a stable base, two side supporting molds, two first sliding blocks, two bent pins, two ascending grooves, four first springs, four second springs, a secondary ejection mechanism, a plurality of stable sliding rods, a lifting tray, two secondary ejection rods and a small insert pin, two side fixing blocks are fixedly arranged at the upper end of the stable base, a plurality of inner reinforcing blocks are arranged between the two side fixing blocks, two stable fixing blocks are fixedly arranged at the upper ends of the two side fixing blocks, an upper fixing block is arranged at the upper ends of the two stable fixing blocks, and a side connecting frame is fixedly arranged on one side of the upper fixing block. According to the core pulling structure, in the core pulling process, the first sliding block and the rear mold insert can be popped off moderately, and it is ensured that the small insert pin smoothly completes the core pulling task. Therefore, the product is effectively prevented from being damaged in the core pulling process, and the product manufacturing accuracy is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a zero-angle small inlay needle insertion and core pulling structure. Background Art

[0002] An insert pin is a tool used to clamp or fix parts in a mold. It is usually a slender needle-shaped object that can be inserted into the position that needs to be fixed through the hole or notch of the mold to play a role in fixing or positioning. In the process of mold manufacturing and use, insert pins are one of the commonly used auxiliary tools. In the production of some more delicate workpieces, since these products have high requirements for the accuracy of the inner hole diameter and small tolerance, it is impossible to make a draft angle, and it is necessary to avoid damaging the product and avoid the problem of easy insertion and burning of the slider and the insert pin. Therefore, the utility model provides a zero-angle small insert pin insertion and core pulling structure to solve the problems raised in the above background technology. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a zero-angle small insert pin is proposed to insert a core pulling structure. During the core pulling process, the first slider and the rear mold insert will bounce away for a distance, so that the small insert pin can better complete the core pulling work, avoiding damage to the product during the core pulling process and improving the accuracy of product manufacturing.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A zero-angle small inlay pin insertion core pulling structure, comprising a stable base, two side support molds, two first slide blocks, two bending pins, two rising grooves, four first springs, four second springs, a secondary ejection mechanism, a plurality of stable slide bars, a lifting tray, two secondary ejection bars and a small inlay pin, wherein two side fixing blocks are fixedly arranged on the upper end of the stable base, and a plurality of inner reinforcement blocks are arranged between the two side fixing blocks;

[0006] Two stable fixing blocks are fixedly arranged on the upper ends of the two side fixing blocks, an upper fixing block is arranged on the upper ends of the two stable fixing blocks, a side connecting frame is fixedly arranged on one side of the upper fixing block, and an electric push rod is arranged inside the side connecting frame;

[0007] Through the above technical scheme, when the mold using the core pulling mechanism is formed, the first slider on the insert pin and the rear mold insert below will both bounce away for a certain distance, and the secondary push mechanism below will drive the first slider to move to both sides, ultimately avoiding the workpiece from being damaged during the core pulling process, and also avoiding the occurrence of burning problems.

[0008] Further, the two first sliding blocks are both slidably arranged at the upper end of the upper fixed block, the two first sliding blocks are both provided with core-pulling grooves, and the two bent pins are respectively slidably arranged inside the two core-pulling grooves;

[0009] Through the above technical solution, the bending pin can drive the first sliding blocks on both sides to move to both sides respectively by sliding inside the core-pulling groove during the rising process.

[0010] Furthermore, the four first springs are respectively arranged between the upper fixed block and the stable fixed block near the four corners, and the four second springs are respectively arranged between the opposite sides of the two first sliding blocks and the upper fixed block;

[0011] Through the above technical solution, the rear mold insert is arranged at the upper center position of the upper fixed block, so that the first slider and the rear mold insert can be ejected during the core pulling process, which facilitates the demoulding process.

[0012] Further, the two side support molds are respectively slidably arranged at the positions on both sides of the upper fixed block, the small inlay pin is arranged inside one of the two side support molds, and one of the two side support molds is fixedly arranged at one end of the electric push rod;

[0013] Through the above technical solution, the electric push rod can drive the fixed block to move, and then the fixed block drives the small inlay needle to move, thereby realizing the function of core pulling.

[0014] Further, the secondary lifting mechanism is arranged in the middle of the lower end of the stable base, the upper end of the secondary lifting mechanism is fixedly connected to the lifting tray, and the lifting tray is vertically slidably arranged on the outer surface of the plurality of stable slide bars;

[0015] Through the above technical solution, the secondary lifting mechanism drives the lifting tray to move up and down, and the lifting tray slides more stably through the stabilizing slide bar, thereby improving the stability of the secondary lifting.

[0016] Furthermore, the lower ends of the two secondary ejector rods are respectively fixedly arranged at the front and rear positions of the upper end of the lifting tray, and the upper ends of the two secondary ejector rods are respectively arranged at the lower ends of the two bent pins;

[0017] Through the above technical solution, when the lifting tray is driven to rise by the secondary lifting mechanism, it can drive the secondary lifting rod above it to rise synchronously, so that the bending pin arranged above the secondary lifting rod will also rise, and finally drive the movement of the first sliding block.

[0018] Furthermore, the two first sliding blocks are provided with rising grooves inside, and the two secondary ejector rods are respectively slidably arranged inside the two rising grooves;

[0019] Through the above technical solution, the secondary ejector rod can be inserted into the interior of the ascending groove during the above process, thereby preventing the highest position from failing to ascend smoothly.

[0020] The utility model has the following beneficial effects:

[0021] The utility model proposes a zero-angle small inlay pin insertion core-pulling structure. During the core pulling process, the first slider and the rear mold insert below will bounce away for a distance, and at the same time, the secondary push mechanism below will drive the lifting tray to rise, thereby causing the secondary push rod above the lifting tray to also rise, and finally the bent pin will drive the first sliders on both sides to move in opposite directions, ultimately allowing the small inlay pin to better complete the core pulling work, avoiding the problem of product damage during the core pulling process and the problem of easy insertion and burning of the small inlay pin and the front and rear molds, thereby improving the accuracy of product manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the axial side of the utility model;

[0023] Figure 2 It is a partial front cross-sectional schematic diagram of the utility model;

[0024] Figure 3 It is a partial bottom-up cross-sectional schematic diagram of the utility model;

[0025] Figure 4 It is an enlarged schematic diagram of point A of the present utility model.

[0026] Legend:

[0027] 1. Stable base; 2. Inner reinforcement block; 3. Side fixing block; 4. Stable fixing block; 5. Upper fixing block; 6. Side supporting mold; 7. First slide block; 8. Bending pin; 9. Rising groove; 10. Side connecting frame; 11. Electric push rod; 12. First spring; 13. Secondary ejector rod; 14. Lifting tray; 15. Stable slide bar; 16. Secondary ejector mechanism; 17. Second spring; 18. Core pulling groove; 19. Small inlay pin. DETAILED DESCRIPTION

[0028] 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.

[0029] Reference Figure 1-4The utility model provides an embodiment: a zero-angle small inlay pin insertion core-pulling structure, comprising a stable base 1, two side support molds 6, two first slide blocks 7, two bent pins 8, two rising grooves 9, four first springs 12, four second springs 17, a secondary ejection mechanism 16, a plurality of stable slide bars 15, a lifting tray 14, two secondary ejector bars 13 and a small inlay pin 19. Two side fixing blocks 3 are fixedly arranged at the upper end of the stable base 1, and a plurality of inner reinforcement blocks 2 are arranged between the two side fixing blocks 3. By arranging the fixing blocks and the reinforcement blocks inside the core-pulling mold, the mold stability is improved and the service life of the mold is extended.

[0030] Specifically, in the above-mentioned specific embodiment, when the mold using the core pulling mechanism is formed, the first slider 7 on the insert pin and the rear mold insert below will both bounce away for a distance, and the secondary push mechanism 16 below will drive the first slider 7 to move to both sides, thereby ultimately avoiding the workpiece from being damaged during the core pulling process and also avoiding the occurrence of burning problems.

[0031] Two stable fixing blocks 4 are fixedly arranged on the upper ends of the two side fixing blocks 3, an upper fixing block 5 is arranged on the upper ends of the two stable fixing blocks 4, a side connecting frame 10 is fixedly arranged on one side of the upper fixing block 5, an electric push rod 11 is arranged inside the side connecting frame 10, two side supporting molds 6 are slidably arranged at the positions on both sides of the upper fixing block 5, a small inlay pin 19 is arranged inside one of the two side supporting molds 6, and one of the two side supporting molds 6 is fixedly arranged at one end of the electric push rod 11;

[0032] Specifically, in the above specific embodiment, the electric push rod 11 can drive the fixed block to move, and then the fixed block drives the small inserting needle 19 to move, thereby realizing the function of core pulling.

[0033] The two first sliders 7 are both slidably arranged at the upper end of the upper fixed block 5, the two first sliders 7 are both provided with core-pulling grooves 18, the two bent pins 8 are respectively slidably arranged inside the two core-pulling grooves 18, the four first springs 12 are respectively arranged between the upper fixed block 5 and the stable fixed block 4 near the four corners, and the four second springs 17 are respectively arranged between the opposite side of the two first sliders 7 and the upper fixed block 5;

[0034] Specifically, in the above-mentioned specific embodiment, during the rising process, the bending pin 8 can drive the first sliders 7 on both sides to move to both sides respectively by sliding inside the core pulling groove 18, and during the core pulling process, the first slider 7 and the rear mold insert below will pop up a distance to avoid damaging the product, and the internal rear mold insert is arranged at the upper center position of the upper fixed block 5, so that the first slider 7 and the rear mold insert can pop up during the core pulling process, which facilitates the demolding process.

[0035] The secondary push mechanism 16 is arranged in the middle of the lower end of the stable base 1, and the upper end of the secondary push mechanism 16 is fixedly connected to the lifting tray 14, and the lifting tray 14 is vertically slidably arranged on the outer surface of multiple stable slide bars 15, and the lower ends of the two secondary push rods 13 are respectively fixedly arranged at the front and rear positions of the upper end of the lifting tray 14, and the upper ends of the two secondary push rods 13 are respectively arranged at the lower ends of the two bent pins 8, and the two first sliding blocks 7 are both provided with rising grooves 9, and the two secondary push rods 13 are respectively slidably arranged inside the two rising grooves 9;

[0036] Specifically, in the above-mentioned specific embodiment, the secondary lifting mechanism 16 drives the lifting tray 14 to move up and down, and the lifting tray 14 slides more stably through the stabilizing slide bar 15, thereby improving the stability of the secondary lifting. In the process of the lifting tray 14 being driven to rise by the secondary lifting mechanism 16, the secondary lifting rod 13 above it can be driven to rise synchronously, thereby causing the bent pin 8 arranged above the secondary lifting rod 13 to rise as well, and finally driving the movement of the first sliding block 7. In the above-mentioned process, the secondary lifting rod 13 can be inserted into the interior of the rising groove 9 to avoid the inability to smoothly rise to the highest position.

[0037] Working principle: When the core-pulling structure is working, first, the first slider 7 will be loosened by 0.05mm under the drive of the second spring 17, and then the rear mold insert at the lower inside will also be loosened by 0.05mm under the drive of the first spring 12 and the upper fixed block 5, and then the secondary push mechanism 16 will be started to drive the lifting tray 14 to move upward. In the process of the lifting tray 14 being driven to rise by the secondary push mechanism 16, the secondary push rod 13 above it will be driven to rise synchronously, and then the bending pin 8 will also rise, and finally the first slider 7 will be driven to move to both sides to complete the core pulling.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero-angle small inlay pin insertion core pulling structure, comprising a stable base (1), two side support molds (6), two first slide blocks (7), two bending pins (8), two rising grooves (9), four first springs (12), four second springs (17), a secondary ejection mechanism (16), a plurality of stable slide bars (15), a lifting tray (14), two secondary ejection rods (13) and a small inlay pin (19), characterized in that: Two side fixing blocks (3) are fixedly arranged on the upper end of the stable base (1), and a plurality of inner reinforcement blocks (2) are arranged between the two side fixing blocks (3); Two stable fixing blocks (4) are fixedly arranged on the upper ends of the two side fixing blocks (3), an upper fixing block (5) is arranged on the upper ends of the two stable fixing blocks (4), a side connecting frame (10) is fixedly arranged on one side of the upper fixing block (5), and an electric push rod (11) is arranged inside the side connecting frame (10).

2. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The two first slide blocks (7) are both slidably arranged at the upper end of the upper fixed block (5), the two first slide blocks (7) are both provided with core-pulling grooves (18), and the two bent pins (8) are respectively slidably arranged inside the two core-pulling grooves (18).

3. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The four first springs (12) are respectively arranged between the upper fixed block (5) and the stable fixed block (4) near the four corners, and the four second springs (17) are respectively arranged between the opposite sides of the two first sliding blocks (7) and the upper fixed block (5).

4. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The two side support molds (6) are respectively slidably arranged at the positions on both sides of the upper fixed block (5), the small inlay pin (19) is arranged inside one of the two side support molds (6), and one of the two side support molds (6) is fixedly arranged at one end of the electric push rod (11).

5. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The secondary lifting mechanism (16) is arranged in the middle of the lower end of the stable base (1), and the upper end of the secondary lifting mechanism (16) is fixedly connected to the lifting tray (14), and the lifting tray (14) is vertically slidably arranged on the outer surface of the plurality of stable sliding bars (15).

6. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The lower ends of the two secondary push rods (13) are respectively fixedly arranged at the front and rear positions of the upper end of the lifting tray (14), and the upper ends of the two secondary push rods (13) are respectively arranged at the lower ends of the two bent pins (8).

7. A zero-angle small needle insertion and core pulling structure according to claim 1, characterized in that: The two first sliding blocks (7) are each provided with a rising groove (9) inside, and the two secondary ejector rods (13) are respectively slidably arranged inside the two rising grooves (9).

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