Ejection structure capable of eliminating ejector pin imprint

Abstract

The utility model discloses an ejection structure capable of eliminating ejector pin marks, which comprises a connecting block, a movable cavity is arranged in the connecting block, ejector pins are arranged at the top and the bottom of the connecting block, a fixed block is arranged in the movable cavity, guide grooves are arranged at the positions close to the middle of the top and the bottom of the connecting block, and the ejector pins are arranged in the guide grooves. And rubber pads are fixedly arranged at the positions, close to the four corners, in the movable cavity, grooves are formed in the tops of the rubber pads, and damping springs are fixedly arranged on the opposite sides in the upper groove and the lower groove. According to the ejection structure capable of eliminating the ejector pin imprint, by arranging the movable cavity, the rubber mat, the damping spring and the energy absorption rubber ball, when the ejection structure is used, the device has an elastic movable space, the stress of unit area during instant ejection can be buffered when a product is ejected, the ejector pin imprint caused by product deformation is reduced, the appearance qualification rate is increased, convenience is brought to a user, and the practicability is high. The practicability of the device is improved, and the use requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to an ejection structure for eliminating ejector pin marks. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes.

[0003] Ejectors are used in plastic molds to eject materials. However, conventional ejectors have a small ejection area and are subject to large forces during ejection. The product is prone to slight deformation and ejector marks, which affect the appearance of the product, reduce product quality, and bring inconvenience to users. It can no longer meet the needs of users. Utility Model Content

[0004] The utility model aims to provide an ejection structure for eliminating ejector pin marks, so as to solve the problem in the above-mentioned background technology that conventional ejector pins have a small ejection area, are subjected to large forces during ejection, are prone to slight deformation of products, and are prone to ejector pin marks, which affects the appearance of the product, reduces the quality of the product, brings inconvenience to users, and can no longer meet the needs of users.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ejection structure for eliminating ejector pin marks, comprising a connecting block, an active cavity is provided inside the connecting block, ejector pins are arranged at the top and bottom of the connecting block, a fixed block is provided inside the active cavity, guide grooves are provided at the middle positions of the top and bottom of the connecting block, rubber pads are fixedly arranged at the four corners of the active cavity, a groove is provided on the top of the rubber pad, damping springs are fixedly arranged on the opposite sides of the upper and lower grooves, and energy-absorbing rubber balls are fixedly arranged on the opposite sides of the two damping springs.

[0006] Furthermore, the opposite sides of the two ejector pins penetrate the guide groove and are fixedly connected to the fixing block.

[0007] Furthermore, the guide groove and the connecting block are of an integrated design, and the guide groove and the movable cavity are of an interconnected design.

[0008] Furthermore, opposite sides of the two rubber pads are fixedly connected to the fixing block.

[0009] Furthermore, the groove and the rubber pad are integrated into one design.

[0010] Furthermore, the damping springs are arranged in a plurality, and every two damping springs are designed to be equidistant from each other.

[0011] Furthermore, the opposite sides of the two energy-absorbing rubber balls penetrate the groove and are fixedly connected to the inner wall of the active cavity.

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

[0013] The ejection structure for eliminating ejector pin marks has an elastic movable space when the device is in use by arranging an active cavity, a rubber pad, a damping spring and an energy-absorbing rubber ball, and can buffer the force per unit area at the moment of ejection when the product is ejected, thereby reducing the ejector pin marks caused by product deformation, improving the appearance qualification rate, bringing convenience to users, improving the practicality of the device, and meeting the use needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the rubber pad of the utility model;

[0017] Figure 4 for Figure 3 A is a partial enlarged schematic diagram of the middle part.

[0018] In the figure: 1. connecting block; 2. movable cavity; 3. ejector pin; 4. fixing block; 5. guide groove; 6. rubber pad; 7. groove; 8. damping spring; 9. energy-absorbing rubber ball. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and not limiting of the protection scope of the utility model.

[0020] See also Figure 1-4The utility model provides a technical solution: an ejection structure for eliminating ejector marks, comprising a connecting block 1, the connecting block 1 is used to set corresponding components, an active cavity 2 is provided inside the connecting block 1, the active cavity 2 enables the device to have an activity space, ejectors 3 are provided at the top and bottom of the connecting block 1, the ejectors 3 are used to eject materials, a fixed block 4 is provided inside the active cavity 2, the fixed block 4 is used to set corresponding components, guide grooves 5 are provided at the middle positions of the top and bottom of the connecting block 1, the guide grooves 5 facilitate the movement of the ejector 3, rubber pads 6 are fixedly provided at the four corners of the active cavity 2, the rubber pads 6 are elastic and can produce deformation, a groove 7 is provided at the top of the rubber pad 6, the groove 7 is used to set corresponding components, damping springs 8 are fixedly provided on the opposite sides of the upper and lower grooves 7, the damping springs 8 can absorb impact, and energy-absorbing rubber balls 9 are fixedly provided on the opposite sides of the two damping springs 8, the energy-absorbing rubber balls 9 can play the role of energy absorption.

[0021] Furthermore, opposite sides of the two ejector pins 3 penetrate the guide groove 5 and are fixedly connected to the fixing block 4 , wherein the ejector pins 3 are used to eject materials.

[0022] Furthermore, the guide groove 5 and the connecting block 1 are integrated, and the guide groove 5 and the movable cavity 2 are interconnected, wherein the guide groove 5 facilitates the movement of the ejector pin 3 .

[0023] Furthermore, opposite sides of the two rubber pads 6 are fixedly connected to the fixing block 4 , wherein the rubber pads 6 are elastic and can be deformed.

[0024] Furthermore, the groove 7 and the rubber pad 6 are integrated into one design, wherein the groove 7 is used to arrange corresponding components.

[0025] Furthermore, a plurality of damping springs 8 are provided, and every two damping springs 8 are designed to be equidistant from each other, wherein the damping springs 8 can buffer the impact force.

[0026] Furthermore, the opposite sides of the two energy-absorbing rubber balls 9 penetrate the groove 7 and are fixedly connected to the inner wall of the active cavity 2, wherein the energy-absorbing rubber balls 9 can absorb impact force.

[0027] Working principle: When using the device, the movable chamber 2 and the rubber pad 6 are provided so that the ejector pin 3 has an elastic movable space, so that the ejector pin 3 can absorb and buffer the force generated when it contacts the material, and the rubber pad 6 is deformed by the impact force to drive the damping spring 8 to compress and buffer, thereby reducing the impact force. When the damping spring 8 is subjected to the impact force, it will drive the energy-absorbing rubber ball 9 to buffer and absorb, thereby reducing the impact force again and reducing the impact on the material.

[0028] According to the above working process, we can know:

[0029] The ejection structure for eliminating ejector pin marks is provided with an active cavity 2, a rubber pad 6, a damping spring 8 and an energy-absorbing rubber ball 9, so that the device has an elastic activity space when in use, can buffer the force per unit area during instantaneous ejection when the product is ejected, reduce the ejector pin marks caused by product deformation, improve the appearance qualification rate, bring convenience to users, improve the practicality of the device, and meet the use needs of users.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ejection structure for eliminating ejector pin marks, comprising a connecting block (1), characterized in that: An active cavity (2) is provided inside the connection block (1), ejector pins (3) are provided at the top and bottom of the connection block (1), a fixed block (4) is provided inside the active cavity (2), guide grooves (5) are provided at middle positions of the top and bottom of the connection block (1), rubber pads (6) are fixedly provided at four corners of the active cavity (2), a groove (7) is provided at the top of the rubber pad (6), damping springs (8) are fixedly provided on opposite sides of the upper and lower grooves (7), and energy-absorbing rubber balls (9) are fixedly provided on opposite sides of the two damping springs (8).

2. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The opposite sides of the two ejector pins (3) both penetrate the guide groove (5) and are fixedly connected to the fixing block (4).

3. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The guide groove (5) and the connection block (1) are of an integrated design, and the guide groove (5) and the movable cavity (2) are of an interconnected design.

4. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The opposite sides of the two rubber pads (6) are fixedly connected to the fixing block (4).

5. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The groove (7) and the rubber pad (6) are designed to be integrated.

6. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The damping springs (8) are arranged in a plurality, and every two damping springs (8) are designed to be equidistant from each other.

7. The ejection structure for eliminating ejector pin marks according to claim 1, characterized in that: The opposite sides of the two energy-absorbing rubber balls (9) penetrate the groove (7) and are fixedly connected to the inner wall of the active cavity (2).

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