Plastic supporting column ejection mechanism

Abstract

The utility model discloses a plastic supporting column ejection mechanism which comprises a male mold core, a product is embedded in the upper end of the male mold core, and a plurality of boss columns extend downwards from the product; the ejector sleeve inner needle is inserted into the boss column, and the ejector sleeve inner needle is used for ejecting the product out of the male mold core by a preset distance; the ejector sleeve inner needle is sleeved with the ejector sleeve outer needle, the ejector sleeve outer needle corresponds to the outer ring of the boss column in position, and the ejector sleeve outer needle is used for completely ejecting the product out of a male mold core after the product is ejected out by the ejector sleeve inner needle by a preset distance. According to the utility model, when the ejector sleeve inner needle moves upwards, the shaft sleeve is driven to move upwards for a preset distance together, so that a part of a product can be ejected out of the male mold core, and the deformation of the boss column caused by too tight combination of the boss column and the male mold core when the product is ejected upwards through the ejector sleeve outer needle can be effectively avoided; and the product yield and the forming efficiency are influenced.

Description

Technical Field

[0001] This utility model relates to the field of boss column forming technology, specifically to a plastic support column ejection mechanism. Background Technology

[0002] Currently, in the plastics industry, product design supports (boss columns) are used to support other components. Due to the need for very tall boss columns, after the product is molded, ejector pins are used to push the product out of the mold. However, because the product and the mold are tightly connected, the boss column is easily deformed when the product is pushed out using ejector pins, which affects the product yield and molding efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a plastic support column ejection mechanism to solve the above problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A plastic support column ejection mechanism includes a male mold core, the upper end of which is inlaid with a product, and the product extends downward with multiple boss columns;

[0006] The ejector pin is inserted into the inside of the boss post. The ejector pin is used to eject the product from the male mold core a predetermined distance.

[0007] The ejector pin is sleeved outside the ejector pin and corresponds to the outer ring of the boss post. The ejector pin is used to completely eject the product from the male mold core after the inner ejector pin has pushed the product out a preset distance.

[0008] As a further description of the above technical solution, it also includes an ejector plate and an ejector back plate, wherein the ejector sleeve outer pin passes through the ejector plate and is fixed to the upper surface of the ejector back plate;

[0009] The ejector plate and the ejector back plate are threaded together by a threaded rod, which is used to position the ejector plate and the ejector back plate.

[0010] As a further description of the above technical solution, the inner needle of the ejector sleeve passes through the ejector plate and the ejector back plate, and the other end of the inner needle of the ejector sleeve is disposed in the bushing at the bottom.

[0011] As a further description of the above technical solution, it also includes a male template, in which a space is provided, and the bushing is disposed in the space, with a preset distance between the upper surface of the bushing and the top of the inner wall of the space.

[0012] As a further description of the above technical solution, the preset distance is 4-6mm.

[0013] As a further description of the above technical solution, the preset distance is 5mm.

[0014] As a further description of the above technical solution, a B plate is provided on the outside of the male mold core, an A plate is provided above the B plate, a female mold core corresponding to the position of the male mold core is provided inside the A plate, a female template is fixed above the A plate, and the B plate is connected to the bottom male template through mold feet.

[0015] As a further description of the above technical solution, a cover plate is provided at the bottom of the male template. The cover plate is used to seal the space and is detachably connected to the male template by bolts.

[0016] As a further description of the above technical solution, the number and position of the inner needle and outer needle of the ejector sleeve correspond to those of the boss post.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention utilizes the upward movement of the inner pin of the ejector sleeve to drive the bushing upward a preset distance, thus allowing the product to be partially ejected from the male mold core first. This effectively avoids the problem of the boss being ejected and deformed due to the excessive tightness between the boss and the male mold core when ejected upward by the outer pin of the ejector sleeve, which would affect the product yield and molding efficiency.

[0019] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a perspective view of the plastic support column ejection mechanism provided by this utility model;

[0021] Figure 2 This is a top view of the plastic support column ejection mechanism provided by this utility model;

[0022] Figure 3 yes Figure 2 A sectional view of section AA.

[0023] Reference numerals: 1. Female mold plate; 2. Plate A; 3. Plate B; 4. Mold foot; 5. Male mold plate; 6. Female mold core; 7. Product; 8. Male mold core; 9. Boss pillar; 10. Inner ejector pin; 11. Outer ejector pin; 12. Ejector plate; 13. Ejector back plate; 14. Space; 15. Bushing; 16. Cover plate; 17. Threaded rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1-3 As shown, in one embodiment, a plastic support column ejection mechanism includes a male mold core 8, with a product 7 embedded at the upper end of the male mold core 8, and multiple boss columns 9 extending downward from the product 7.

[0026] The inner ejector pin 10 is inserted into the inside of the boss post 9. The inner ejector pin 10 is used to eject the product 7 from the male mold core 8 by a predetermined distance. Specifically, after the inner ejector pin 10 is inserted into the boss post, the boss post 9 is connected to the inner ejector pin 10 based on its own clamping force. When the inner ejector pin 10 moves upward, it drives the bushing 15 to move upward together by a predetermined distance. The inner ejector pin 10 protrudes from the outer ejector pin 11 described below, so the product 7 can be ejected from the male mold core 8 first. This can effectively avoid the problem of the boss post 9 being ejected and deformed due to the excessive tightness of the connection between the boss post 9 and the male mold core 8 when ejected upward by the outer ejector pin 11, which would affect the yield and molding efficiency of the product 7.

[0027] The outer ejector pin 11 is sleeved outside the inner ejector pin 10. The outer ejector pin 11 corresponds to the outer ring of the boss 9. The outer ejector pin 11 is used to completely eject the product 7 from the male mold core 8 after the inner ejector pin 10 has pushed the product 7 out a preset distance. When the outer ejector pin 11 moves upward, after the inner ejector pin 10 has pushed the product 7 out and separated it from the male mold core 8, the outer ejector pin 11 can use a smaller lifting force to push the product 7 out, reducing damage to the boss 9.

[0028] Optionally, the plastic support column ejection mechanism also includes an ejector plate 12 and an ejector back plate 13. The outer ejector pin 11 passes through the ejector plate 12 and is fixed to the upper surface of the ejector back plate 13. The inner ejector pin 10 passes through the ejector plate 12 and the ejector back plate 13, and the other end of the inner ejector pin 10 is located in the bushing 15 at the bottom.

[0029] The ejector plate 12 and the ejector back plate 13 are threadedly connected by a threaded rod 17, which is used to position the ejector plate 12 and the ejector back plate 13. When the ejector plate 12 and the ejector back plate 13 move upward, they drive the inner ejector pin 10 and the bushing 15 to move upward synchronously, pushing the boss 9 upward. At this time, the outer ejector pin 11 is shorter than the inner ejector pin 10, so when the inner ejector pin 10 is pushed upward, the outer ejector pin 11 has not yet pushed up the outer ring of the boss 9.

[0030] When the screw sleeve is restricted from moving, the inner needle 10 of the ejector sleeve stops moving upward, and the outer needle 11 of the ejector sleeve continues to push the boss 9 upward, pushing the product 7 out.

[0031] Optionally, it also includes a male template 5, which has a space 14. A bushing 15 is disposed in the space 14, and the upper surface of the bushing 15 is at a preset distance from the top of the inner wall of the space 14. The bushing 15 moves upward within the space 14. After the inner needle 10 of the ejector sleeve moves upward a preset distance, the top of the inner wall of the space 14 prevents the bushing 15 and the inner needle 10 of the ejector sleeve from moving further upward, while the outer needle 11 of the ejector sleeve continues to move upward, lifting the boss column 9.

[0032] Optionally, the preset distance is 4-6 mm, and in some embodiments, the preset distance is 5 mm.

[0033] Optionally, a B plate 3 is provided on the outside of the male mold core 8, an A plate 2 is provided above the B plate 3, a female mold core 6 corresponding to the position of the male mold core 8 is provided inside the A plate 2, a female template 1 is fixed above the A plate 2, and the B plate 3 is connected to the bottom male template 5 through the mold foot 4.

[0034] Optionally, a cover plate 16 is provided at the bottom of the male template 5. The cover plate 16 is used to seal the space 14. The cover plate 16 is detachably connected to the male template 5 by bolts. After the cover plate 16 is removed from the bottom of the male template 5, the screw sleeve and the inner needle 10 of the sleeve can be taken out for replacement and cleaning.

[0035] Optionally, the number and position of the inner needle 10 and outer needle 11 of the ejector sleeve correspond to those of the boss post 9.

[0036] All standard parts used in this utility model can be purchased from the market, and non-standard parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic support column ejection mechanism, characterized in that, It includes a male mold core, the upper end of which is inlaid with a product, and the product extends downward with multiple boss pillars; The ejector pin is inserted into the inside of the boss post. The ejector pin is used to eject the product from the male mold core a predetermined distance. The ejector pin is sleeved outside the ejector pin and corresponds to the outer ring of the boss post. The ejector pin is used to completely eject the product from the male mold core after the inner ejector pin has pushed the product out a preset distance.

2. The plastic support column ejection mechanism according to claim 1, characterized in that, It also includes an ejector plate and an ejector back plate, wherein the ejector sleeve outer pin passes through the ejector plate and is fixed to the upper surface of the ejector back plate; The ejector plate and the ejector back plate are threaded together by a threaded rod, which is used to position the ejector plate and the ejector back plate.

3. The plastic support column ejection mechanism according to claim 2, characterized in that, The inner needle of the ejector sleeve passes through the ejector plate and the ejector back plate, and the other end of the inner needle of the ejector sleeve is located in the bushing at the bottom.

4. The plastic support column ejection mechanism according to claim 3, characterized in that, It also includes a male template, which has a space inside, and the bushing is disposed in the space. The upper surface of the bushing is at a predetermined distance from the top of the inner wall of the space.

5. The plastic support column ejection mechanism according to claim 4, characterized in that, The preset distance is 4-6mm.

6. The plastic support column ejection mechanism according to claim 4, characterized in that, The preset distance is 5mm.

7. The plastic support column ejection mechanism according to claim 1, characterized in that, The male mold core is provided with a B plate on its outside, and an A plate is provided above the B plate. The female mold core corresponding to the position of the male mold core is provided inside the A plate. A female template is fixed above the A plate. The B plate is connected to the male template at the bottom through mold feet.

8. The plastic support column ejection mechanism according to claim 4, characterized in that, The bottom of the male template is provided with a cover plate, which is used to seal the space. The cover plate is detachably connected to the male template by bolts.

9. The plastic support column ejection mechanism according to claim 1, characterized in that, The number and position of the inner needle and outer needle of the ejector sleeve correspond to those of the boss post.

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