Ejector pin rubber coating and product taking structure

By installing an adjustment component in the product ejector structure with a rubber-coated ejector, and using the three-point centering principle of the ball bearings to straighten the rubber-coated ejector, the product quality problem caused by ejector bending is solved, the stable ejection of the ejector is achieved, and the molding quality of the product is improved.

CN223630901UActive Publication Date: 2025-12-05KUNSHAN TIEYING RUBBER PROD CO LTD
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Patent Information

Application Number
CN202422929045.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-12-05
Estimated Expiration
2034-11-29

AI Technical Summary

Technical Problem

In some molds with smaller diameters, ejector pins may bend over time during use. This bending can cause the top of the ejector pin to bend, affecting the product quality.

Method used

Design a product picking structure with a rubber-coated ejector pin. By installing an adjustment component inside the frame and using the three-point centering principle of three ball bearings, the angle of the rubber-coated ejector pin can be straightened to prevent the ejector pin from bending during use.

Benefits of technology

It effectively prevents the ejector pin from bending during use, avoids friction between the ejector pin tip and the outer surface of the injection molded part, and improves product quality.

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Abstract

The utility model relates to the technical field of mold ejector pins, in particular to an ejector pin rubber coating product taking structure, which comprises a mold placing frame, an adjusting component, an ejector pin seat and a rubber coating ejector pin which are arranged in a frame body, a pushing cylinder is arranged above the frame body and is connected with the ejector pin seat, and the rubber coating ejector pin is arranged on the ejector pin seat. The adjusting assembly comprises a top plate, a bottom plate, a first side frame, a second side frame, a side plate, an inner ring and three groups of balls, the balls are located in the inner ring, the inner ring is located between the top plate and the bottom plate, the three groups of balls are uniformly distributed in the inner ring, and the balls are in rolling connection with the inner ring, the top plate and the bottom plate; the utility model has the beneficial effects that the adjusting component is additionally arranged in the frame body, and the angle of the rubber-coated ejector pin can be straightened by virtue of the balls between the top plate and the bottom plate when the ejector pin moves by utilizing the principle that the three points of the three balls are centered, so that the rubber-coated ejector pin is prevented from being bent after being used for a certain time.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a mould ejector pin field, concretely is a kind of top pin package glue product structure. BACKGROUND

[0002] Mould ejector pin, also be called as ejector pin or top pin piece, is used to the finished product of plastic mould in top out fine rod, its main function is in the state of plastic melt filling mould cavity, product is separated from mould after forming by ejector pin, is a kind of common spare part of plastic mould, the types of mould ejector pin are various, and common have round top pin, package glue top pin, straight top pin, self-lubricating top pin, fast top pin, flat top pin, double-section top pin etc., according to different needs, different kinds and specifications of top pin can be selected to realize the best plastic forming effect, and package glue top pin has certain advantage, this is because contact surface after package glue is soft, and it is to give product a release stress space when top out, so that product has greater space to come out from inner hole.

[0003] In most cases, the ejector pin of the mould is an integral structure, and does not need to be adjusted, but part of the small diameter ejector pin has a certain length when in use, and as the length increases, the overall structure of the ejector pin will be bent after being used for a period of time, so that the ejector pin is no longer in a vertical posture, therefore, in this case, when the ejector pin continues to be ejected through the pin plate in the through hole of the mould cavity, the bent part of the ejector pin will be affected by the through hole of the mould cavity, so that the end of the ejector pin is displaced on the outer surface of the injection molded part to cause friction, thereby causing damage to the product and affecting the quality of the product.

[0004] Therefore, the utility model provides a kind of top pin package glue product structure to solve the problems raised in the above. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of top pin package glue product structure to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of top pin package glue product structure, the top pin package glue product structure includes: frame, frame inside is provided with mould installation frame, adjusting assembly, ejector pin seat and package glue top pin, frame top is provided with push cylinder, push cylinder is connected with ejector pin seat, package glue top pin is installed on ejector pin seat;

[0007] Adjusting assembly, adjusting assembly includes top plate, bottom plate, first side frame, second side frame, side plate, inner ring and ball, ball is located in inner ring, inner ring is located between top plate and bottom plate, ball is equipped with three groups, three groups of balls are evenly distributed in inner ring, ball and inner ring, top plate, bottom plate are all rolling connection.

[0008] Preferably, one side of the frame is provided with a through slot, and the other side of the frame is provided with an insertion slot and a through hole.

[0009] Preferably, the top plate and the bottom plate are located between the first side frame and the second side frame, two ends of the top plate are fixedly connected to the first side frame and the second side frame respectively, two ends of the bottom plate are fixedly connected to the first side frame and the second side frame respectively, and the top plate is located above the bottom plate.

[0010] Preferably, the inner ring is fixed between the top plate and the bottom plate, the top plate is provided with a guide hole, the guide hole penetrates the top plate and the bottom plate, the guide hole is located at the center position of the top plate and the bottom plate, the guide hole is located at the center position of the inner ring, the guide hole is located directly below the rubber-coated ejector pin, and the guide hole penetrates the centers of the three groups of balls.

[0011] Preferably, the surface of the first side frame is provided with an insertion plate and a threaded rod, the insertion plate is inserted into the insertion slot and is installed with a double-headed bolt, the threaded rod is inserted into the through hole, and a knob seat is installed on the threaded rod.

[0012] Preferably, the second side frame, the top plate, the bottom plate and the first side frame can pass through the through slot, the size of the side plate is greater than that of the through slot, the surface of the side plate is provided with a rubber pad, the rubber pad is tightly abutted against the surface of the frame, the side plate is connected to the frame through bolts, and the surface of the side plate is provided with two groups of pull handles.

[0013] Preferably, the rubber-coated ejector pin can extend into the guide hole, the mold body is arranged on the mold placing frame, and the rubber-coated ejector pin can eject the product on the mold body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The structure for rubber-coated ejector pin product taking provided by the utility model is characterized in that an adjusting assembly is additionally arranged in the frame, the three-point centering principle of the three balls is utilized, the rubber-coated ejector pin extends into the guide hole when the rubber-coated ejector pin moves, the rubber-coated ejector pin is angularly straightened by the balls between the top plate and the bottom plate, and the rubber-coated ejector pin is prevented from being bent after being used for a certain period of time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the utility model is schematically shown in the drawings.

[0017] Figure 2 Structure side view of the utility model;

[0018] Figure 3 Structure detail view of the utility model;

[0019] Figure 4 Adjusting assembly structure schematic view of the utility model;

[0020] Figure 5 Ball structure schematic view of the utility model;

[0021] Figure 6 Inner ring structure schematic view of the utility model.

[0022] In the drawing: 1, rubber-coated thimble;3, frame;4, mold setting rack;5, mold body;6, side plate;7, pull handle;8, thimble base;9, push cylinder;10, button seat;11, plugboard;12, plug slot;13, through hole;14, through slot;15, threaded rod;16, first side frame;17, bottom plate;18, top plate;19, guide hole;20, inner ring;21, second side frame;22, rubber pad;23, ball;100, adjusting assembly. DETAILED DESCRIPTION

[0023] Example one: please refer to Figures 1-6 The utility model provides a technical scheme: a thimble rubber-coated product structure, the thimble rubber-coated product structure includes: frame 3, frame 3 inside is provided with mold setting rack 4, adjusting assembly 100, thimble base 8 and rubber-coated thimble 1, frame 3 top is provided with push cylinder 9, push cylinder 9 is connected with thimble base 8, and rubber-coated thimble 1 is installed on thimble base 8;

[0024] Adjusting assembly 100, adjusting assembly 100 includes top plate 18, bottom plate 17, first side frame 16, second side frame 21, side plate 6, inner ring 20 and ball 23, ball 23 is located in inner ring 20, inner ring 20 is located between top plate 18 and bottom plate 17, ball 23 is equipped with three groups, three groups of ball 23 are evenly distributed in inner ring 20, and ball 23 and inner ring 20, top plate 18, bottom plate 17 are all rolling connections;

[0025] When using, by installing adjusting assembly 100 in frame 3 inside, by the principle of three-point centering of three balls 23, when thimble is moved by starting push cylinder 9, rubber-coated thimble 1 will be inserted into guide hole, and the angle of rubber-coated thimble 1 can be straightened by ball 23 between top plate 18 and bottom plate 17, to prevent rubber-coated thimble 1 from being bent after a certain time of use.

[0026] In the embodiment two, the frame 3 is provided with a through slot 14 on one side, and an insertion slot 12 and a through hole 13 on the other side. The first side frame 16 is provided with an insertion plate 11 and a threaded rod 15. The insertion plate 11 is inserted into the insertion slot 12 and is provided with a double-headed bolt. The threaded rod 15 is inserted into the through hole 13 and is provided with a knob seat 10.

[0027] The second side frame 21, the top plate 18, the bottom plate 17 and the first side frame 16 can pass through the through slot 14. The size of the side plate 6 is greater than that of the through slot 14. The surface of the side plate 6 is provided with a rubber pad 22 which is tightly abutted with the surface of the frame 3. The side plate 6 is connected with the frame 3 through a bolt. The surface of the side plate 6 is provided with two groups of pull handles 7.

[0028] In use, the adjusting assembly 100 is convenient to install. The specific operation is as follows. An operator holds the pull handle 7 by hand to drive the adjusting assembly 100 to move. The second side frame 21, the top plate 18, the bottom plate 17 and the first side frame 16 pass through the through slot 14. The insertion plate 11 is inserted into the insertion slot 12. The threaded rod 15 is inserted into the through hole 13. The double-headed bolt is installed on the insertion plate 11. The knob seat 10 is installed on the threaded rod 15 to ensure the stability of the connection between the first side frame 16 and the frame 3. At this time, the rubber pad 22 contacts the surface of the frame 3 and is tightly abutted, thereby providing buffering and protection to avoid damage caused by the direct contact between the side plate 6 and the frame 3. The bolt is installed on the side plate 6 to realize the connection between the side plate 6 and the frame 3.

[0029] In the embodiment three, the inner ring 20 is fixed between the top plate 18 and the bottom plate 17. The top plate 18 and the bottom plate 18 are provided with guide holes 19 which penetrate the top plate 18 and the bottom plate 17. The guide holes 19 are located at the center positions of the top plate 18 and the bottom plate 17. The guide holes 19 are located at the center positions of the inner ring 20. The guide holes 19 are located directly below the rubber-coated thimble 1. The guide holes 19 penetrate the centers of the three groups of balls 23. The rubber-coated thimble 1 can be inserted into the guide hole 19. The mold body 5 is arranged on the mold placing frame 4. The rubber-coated thimble 1 can eject the product on the mold body 5.

[0030] In use, the rubber-coated thimble 1, the guide hole 19 and the mold body 5 are arranged on the same straight line to facilitate the smooth ejection of the product by the rubber-coated thimble 1.

[0031] In actual use, by installing the adjusting assembly 100 inside the frame body 3, by starting the push cylinder 9 to drive the ejector pin to move, the rubber-coated ejector pin 1 will pass through the guide hole 19, and then the rubber-coated ejector pin 1 is angularly straightened by the aid of the ball 23 between the top plate 18 and the bottom plate 17, preventing the rubber-coated ejector pin 1 from bending after a certain period of use, which avoids the fact that the ejector pin of the mold is an integral structure and does not need to be adjusted, but part of the ejector pin with a small diameter is used, and because it has a certain length, as the length increases, the ejector pin of this type will bend after a certain period of use, so that the ejector pin is no longer in a vertical position, therefore, in this case, when the ejector pin continues to pass through the through hole of the needle plate in the mold cavity to eject, the bent part of the ejector pin will be affected by the through hole of the mold cavity, causing the end of the ejector pin to displace on the surface of the injection molded part, causing friction, and then causing damage to the product, affecting the quality of the product.

[0032] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A structure for ejection pin encapsulation and product pickup, characterized by: The structure of the needle encapsulation product taking structure includes: frame (3), the inside of frame (3) is provided with mold setting rack (4), adjusting assembly (100), needle seat (8) and encapsulated needle (1), the top of frame (3) is provided with push cylinder (9), push cylinder (9) is connected with needle seat (8), encapsulated needle (1) is installed on needle seat (8); Adjusting assembly (100) includes top plate (18), bottom plate (17), first side frame (16), second side frame (21), side plate (6), inner ring (20) and ball (23), ball (23) is located in inner ring (20), inner ring (20) is located between top plate (18) and bottom plate (17), ball (23) is provided with three groups, three groups of ball (23) are evenly distributed in inner ring (20), ball (23) and inner ring (20), top plate (18) and bottom plate (17) are all rolling connection.

2. The structure according to claim 1, wherein: The side of frame (3) is provided with through slot (14), the other side of frame (3) is provided with insertion slot (12) and through hole (13).

3. The structure according to claim 1, wherein: The top plate (18) and bottom plate (17) are located between the first side frame (16) and the second side frame (21), the two ends of the top plate (18) are fixedly connected to the first side frame (16) and the second side frame (21), respectively, and the two ends of the bottom plate (17) are fixedly connected to the first side frame (16) and the second side frame (21), respectively.

4. The structure according to claim 1, wherein: The inner ring (20) is fixed between the top plate (18) and the bottom plate (17), the surface of the top plate (18) and the bottom plate (18) is provided with a guide hole (19), the guide hole (19) penetrates the top plate (18) and the bottom plate (17), the guide hole (19) is located at the center position of the top plate (18) and the bottom plate (17), the guide hole (19) is located at the center position of the inner ring (20), the guide hole (19) is located directly below the encapsulated needle (1), and the guide hole (19) penetrates the centers of the three groups of balls (23).

5. The structure according to claim 1, wherein: The surface of the first side frame (16) is provided with an insertion plate (11) and a threaded rod (15), the insertion plate (11) is inserted into the insertion slot (12) and is installed with a double-headed bolt, the threaded rod (15) is inserted into the through hole (13), and the threaded rod (15) is installed with a knob seat (10).

6. The structure according to claim 1, wherein: The second side frame (21), the top plate (18), the bottom plate (17) and the first side frame (16) can all pass through the through slot (14), the size of the side plate (6) is greater than that of the through slot (14), the surface of the side plate (6) is provided with a rubber pad (22), the rubber pad (22) is tightly abutted with the surface of the frame (3), the side plate (6) is connected with the frame (3) through bolts, and the surface of the side plate (6) is provided with two groups of pull handles (7).

7. The structure according to claim 1, wherein: The encapsulated needle (1) can extend into the guide hole (19), the mold body (5) is arranged on the mold setting rack (4), and the encapsulated needle (1) can push out the product on the mold body (5).