Pitched roof ejection demolding structure

Abstract

The utility model relates to a pitched roof ejection demolding structure, which is connected to a mold, a product is placed in the mold, and the pitched roof ejection demolding structure comprises a pitched roof movably arranged in the mold in a penetrating manner, a chute for the pitched roof to penetrate through is formed in the mold, and the pitched roof slides along the length extension direction of the chute; two groups of inclined tops and two groups of inclined grooves are arranged, the two groups of inclined grooves are symmetrically arranged, and the distance between the two inclined grooves is gradually reduced along the vertical upward direction; the supporting ejector rod is connected to the pitched roof, a sliding groove is horizontally formed in the upper portion of the pitched roof, and a vertical groove penetrating through the upper and lower end faces is formed in the mold; one end of the supporting ejector rod movably penetrates through the vertical groove, and the other end of the supporting ejector rod slidably penetrates through the sliding groove and abuts against the inner wall of the product. By the adoption of the structure, automatic demolding of an injection molding product is completed, the demolding efficiency of the product is improved, the labor cost is reduced, and the production quality of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding demoulding, and particularly relates to an inclined ejector pin demoulding structure. Background Art

[0002] In the injection molding process, demoulding, as the last key link of the production cycle, has a crucial impact on the quality and production efficiency of the final product. However, in the actual production process, it is often encountered that when an injection molded product is demoulded, adhesion occurs between the product rib (i.e., the more complex part of the product structure, such as protrusions, grooves, etc.) and the ejector pin (the mechanism for ejecting the product), causing the product to move with the horizontal movement of the ejector pin, resulting in difficult demoulding. It is often necessary to increase the demoulding force or attempt demoulding multiple times, or spray demoulding agent for demoulding. The demoulding cost is high and the demoulding efficiency is low.

[0003] Therefore, there is an urgent need to provide an inclined ejector pin demoulding structure to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies and defects of the prior art, and provide an inclined ejector pin demoulding structure, which realizes the automatic demoulding of injection molded products, improves the demoulding efficiency of products, reduces the labor cost, and improves the production quality of products.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] An inclined ejector pin demoulding structure is connected to a mold, and a product is placed in the mold. The structure includes:

[0007] An inclined ejector pin is movably inserted through the mold. An inclined slot for the inclined ejector pin to pass through is provided in the mold, and the inclined ejector pin slides along the length extension direction of the inclined slot; there are two groups of the inclined ejector pin and the inclined slot, the two groups of inclined slots are symmetrically arranged, and the distance between the two inclined slots gradually decreases in the vertically upward direction;

[0008] A support ejector pin is connected to the inclined ejector pin. A chute is horizontally provided on the upper part of the inclined ejector pin, and a vertical slot penetrating the upper and lower end faces is provided on the mold; one end of the support ejector pin is movably inserted through the vertical slot, and the other end slides through the chute and abuts against the inner wall of the product.

[0009] Optionally, the support ejector pin includes a sliding section and an abutting section. The sliding section is slidably connected to the vertical slot; one end of the abutting section is slidably connected to the chute and keeps abutting against the inner wall of the product, and the other end is connected to the upper end of the sliding section.

[0010] Optionally, the sliding section and the abutting section are integrally formed.

[0011] Optionally, the supporting ejector rod is arranged in an L shape.

[0012] Optionally, there are four groups of the supporting ejector rods. Two groups of the supporting ejector rods are slidably connected to one of the lifters, and the other two groups of the supporting ejector rods are slidably connected to the other lifter.

[0013] Optionally, a plurality of strip-shaped grooves are provided at the top end of the lifter. The strip-shaped grooves are used for corresponding connection with the ribs on the inner wall of the product, and the length extension direction of the strip-shaped grooves is the same as the rib extension direction on the inner wall of the product.

[0014] Optionally, a limiting block is provided at the upper end of the lifter. The limiting block is connected to the inner side of the lifter, and the limiting block is arranged directly above the supporting ejector rod.

[0015] Optionally, the width of the limiting block is smaller than the distance between two groups of ribs of the product.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the utility model, the lifter ejection and demolding structure is connected to the mold. The lifter ejection and demolding structure includes a lifter and a supporting ejector rod. The lifter movably penetrates through the mold, and an inclined slot for the lifter to penetrate is formed on the mold. The lifter ejects the product while sliding in the inclined slot; there are two groups of lifters and inclined slots. The two groups of inclined slots are symmetrically arranged, and the distance between the two groups of inclined slots gradually decreases in the vertically upward direction, that is, the top ends of the lifters also gradually approach; the supporting lifter is connected to the lifter. A sliding slot is horizontally provided at the upper part of the lifter. A vertical slot penetrating the upper and lower end faces of the mold is provided on the mold. One end of the supporting ejector rod movably penetrates through the vertical slot, and the other end slidably penetrates through the sliding slot and abuts against the inner wall of the product. That is, when the lifter moves upward, while the two lifters approach each other, the supporting ejector rod moves upward, and the supporting ejector rod does not move in the horizontal direction, that is, the product abutted against it cannot move in the horizontal direction either; the two lifters move upward in the vertical direction to eject the injection-molded product out of the mold. Since the supporting ejector rod abuts against the inner wall of the product, the demolding of the lifter and the product is completed. Through the setting of the above components, the automatic demolding of the injection-molded product is completed, the demolding efficiency of the product is improved, the labor cost is reduced, and the production quality of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the utility model.

[0019] Figure 2 is a schematic sectional view of the utility model.

[0020] Figure 3 is a schematic structural diagram of the lifter in the utility model.

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 1. Mold, 21. Angled lifter, 22. Angled slot, 23. Strip-shaped groove, 24. Limit block, 3. Supporting ejector rod, 31. Slide groove, 32. Vertical groove, 33. Sliding section, 34. Contact section. Detailed implementation manners

[0023] The present utility model will be further described in detail below in conjunction with embodiments and the drawings, but the implementation manners of the present utility model are not limited thereto.

[0024] The technical solution of the present utility model provides an angled lifter ejection and demolding structure, which is connected to a mold, and a product is placed in the mold.

[0025] Referring to Figures 1 to 3 , in this embodiment, it includes:

[0026] An angled lifter 21, which is movably inserted through the mold 1. An angled slot 22 for the angled lifter 21 to pass through is provided in the mold 1, and the angled lifter 21 slides along the length extension direction of the angled slot 22; both the angled lifter 21 and the angled slot 22 are provided with two groups, the two groups of angled slots 22 are symmetrically arranged, and the distance between the two angled slots 22 gradually decreases along the vertically upward direction;

[0027] A supporting ejector rod 3, which is connected to the angled lifter 21. A slide groove 31 is horizontally provided on the upper part of the angled lifter 21, and a vertical groove 32 penetrating the upper and lower end faces is provided on the mold 1; one end of the supporting ejector rod 3 is movably inserted through the vertical groove 32, and the other end is slidably inserted through the slide groove 31 and abuts against the inner wall of the product.

[0028] Optionally, in this embodiment, the lifter ejection and demolding structure is connected to the mold 1 for ejecting the product after injection molding from the mold 1. The lifter ejection and demolding structure includes a lifter 21 and a support ejector rod 3. The lifter 21 movably penetrates the mold 1, and the mold 1 is provided with an inclined slot 22 for the lifter 21 to penetrate. The product is formed at the upper end of the mold 1, that is, the inclined slot 22 is provided for the lifter 21 to slide back and forth along the length extension direction of the inclined slot 22. When the lifter 21 slides in the inclined slot 22, the product is ejected at the same time; both the lifter 21 and the inclined slot 22 are provided with two groups, and the two groups of inclined slots 22 are symmetrically arranged, and the distance between the two groups of inclined slots 22 gradually decreases in the vertically upward direction, that is, one group of lifters 21 is correspondingly slidably connected in one group of inclined slots 22; when the two groups of lifters 21 slide upward at the same time, since the distance between the two groups of inclined slots 22 gradually decreases in the vertically upward direction, that is, the tops of the lifters 21 also gradually approach; the support lifter 21 is connected to the lifter 21, a sliding slot 31 is horizontally provided at the upper part of the lifter 21, the mold 1 is provided with a vertical slot 32 penetrating the upper and lower end faces of the mold 1, one end of the support ejector rod 3 movably penetrates the vertical slot 32, and the other end slidably penetrates the sliding slot 31 and abuts against the inner wall of the product, that is, after the product is injection molded, the two groups of lifters 21 slide along the extension direction of the sliding slot 31, the two groups of lifters 21 move upward in the vertical direction, and the two groups of lifters 21 approach each other in the horizontal direction; since one end of the support ejector rod 3 is connected to the vertical slot 32 and the other end is movably connected to the sliding slot 31, that is, the support ejector rod 3 can only move in the vertical direction, that is, when the lifter 21 moves upward, while the two groups of lifters 21 approach each other, the support ejector rod 3 moves upward, and the lifter 21 slides in the horizontal direction along the support ejector rod 3; the support ejector rod 3 penetrates the sliding slot 31 and abuts against the inner wall of the product, and the support ejector rod 3 does not move in the horizontal direction, that is, the product in contact with it cannot move in the horizontal direction either; the two groups of lifters 21 move upward in the vertical direction to eject the injection molded product from the mold 1, and at the same time the two groups of lifters 21 also approach each other in the horizontal direction. Since the support ejector rod 3 abuts against the inner wall of the product, the demolding of the lifter 21 and the product is completed, preventing the product from offsetting during the movement of the lifter 21 due to the bonding between the inner wall ribs of the product and the lifter 21, so that the product cannot be successfully demolded. Through the setting of the above components, the automatic demolding of the injection molded product is completed, the demolding efficiency of the product is improved, the labor cost is reduced, and the damage of the product caused by secondary demolding is avoided, improving the production quality of the product.

[0029] In this embodiment, the support ejector rod 3 includes a sliding section 33 and an abutting section 34. The sliding section 33 is connected to the vertical groove 32, that is, the sliding section 33 is slidably connected to the vertical groove 32; one end of the abutting section 34 is slidably connected to the sliding groove 31 and remains in abutment with the inner wall of the product. That is, the angled ejector 21 is slidably connected to the abutting section 34 in the horizontal direction. The abutting section 34 is used to abut against the inner wall of the product to prevent the rib of the product from adhering to the angled ejector 21 and moving horizontally with the angled ejector 21. The other end of the abutting section 34 is connected to the upper end of the sliding section 33 to realize the connection between the abutting section 34 and the sliding section 33, so that the connection between the sliding section 33 and the vertical groove 32 restricts the movement of the abutting section 34 in the horizontal direction. Further, in this embodiment, the sliding section 33 and the abutting section 34 are integrally formed. Through the integrally formed setting, the connection between the sliding section 33 and the abutting section 34 is made closer and it is convenient for processing. In other embodiments, the sliding section 33 and the abutting section 34 can also be separately provided and then connected by screws or snap positions, which is not limited herein.

[0030] In this embodiment, the support ejector rod 3 is arranged in an L shape, that is, the lower end of the L-shaped support ejector rod 3 is the sliding section 33 for slidably connecting with the vertical groove 32; the horizontal end of the L-shaped support ejector rod 3 is the abutting section 34 for connecting with the sliding groove 31 and abutting against the inner wall of the product, thereby restricting the movement of the product in the horizontal direction. In other embodiments, the support ejector rod 3 can also be arranged in a T shape, that is, the lower end of the support ejector rod 3 is the sliding section 33 for slidably connecting with the sliding groove 31; both the left and right sides of the T-shaped support ejector rod 3 are abutting sections 34. The left abutting section 34 is slidably connected to the sliding groove 31 of a group of angled ejectors 21 and abuts against the inner wall of one end of the product, and the right abutting section 34 is slidably connected to the sliding groove 31 of another group of angled ejectors 21. It can also restrict the movement of the support ejector rod 3 in the horizontal direction through the sliding section 33 at the lower end. The left and right abutting sections 34 abut against the product to realize the separation of the product from the angled ejector 21, thereby completing the demolding of the product, which is not limited herein.

[0031] In this embodiment, there are four groups of the support ejector rods 3. Two groups of support ejector rods 3 are slidably connected to a group of angled ejectors 21, and the other two groups of support ejector rods 3 are slidably connected to another group of angled ejectors 21. Through the setting of the four groups of support ejector rods 3, the fault tolerance rate of the demolding structure is improved, that is, it prevents the failure of product demolding caused by the damage of one group of support ejector rods 3, and improves the service life of the demolding structure.

[0032] In this embodiment, a plurality of strip-shaped grooves 23 are provided at the top end of the angled ejector 21. The strip-shaped grooves are used for corresponding connection with the ribs on the inner wall of the product, and the length extension direction of the strip-shaped grooves 23 is the same as the rib extension direction on the inner wall of the product. That is, the corresponding setting of the plurality of strip-shaped grooves 23 and the ribs plays a guiding role for guiding the movement of the angled ejector 21 in the horizontal direction.

[0033] In this embodiment, a limit block 24 is provided at the upper end of the lifter 21. The limit block 24 is connected to the inner side of the lifter 21 and is located directly above the support ejector rod 3. By providing the limit block 24, the collision of the two lifters 21 is prevented from damaging the lifter bar. Further, in this embodiment, the width of the limit block 24 is smaller than the distance between two ribs of the product, so that the limit block 24 can be arranged between the two ribs to limit the moving distance of the lifter 21.

[0034] The above embodiments merely illustrate the implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A slanted ejection demoulding structure, connected to a mold, in which a product is placed, characterized in that: include: An inclined top is movably arranged in the mold, and an inclined slot is provided in the mold for the inclined top to pass through, and the inclined top slides along the length extension direction of the inclined slot; the inclined top and the inclined slot are provided with two groups, the two groups of inclined slots are symmetrically arranged, and the distance between the two inclined slots gradually decreases in the vertical upward direction; A support push rod is connected to the inclined top, a slide groove is horizontally provided on the upper part of the inclined top, and a vertical groove penetrating the upper and lower end surfaces is provided on the mold; one end of the support push rod is movably inserted into the vertical groove, and the other end is slidably inserted into the slide groove and abuts against the inner wall of the product.

2. The inclined ejection demoulding structure according to claim 1, characterized in that: The supporting top rod includes a sliding section and an abutting section, the sliding section is slidably connected to the vertical slot; one end of the abutting section is slidably connected to the sliding slot and maintains abutment with the inner wall of the product, and the other end is connected to the upper end of the sliding section.

3. The inclined ejection demoulding structure according to claim 2, characterized in that: The sliding section and the abutting section are integrally formed.

4. The inclined ejection demoulding structure according to claim 3, characterized in that: The supporting top rod is arranged in an L shape.

5. The inclined ejection demoulding structure according to claim 1, characterized in that: The support top rods are provided with four groups, two groups of the support top rods are slidably connected to one of the inclined tops, and the other two groups of the support top rods are slidably connected to another of the inclined tops.

6. The inclined ejection demoulding structure according to claim 1, characterized in that: The top of the inclined roof is provided with a plurality of strip grooves, the strip grooves are used to be connected correspondingly to the bone positions of the inner wall of the product, and the length extension direction of the strip grooves is the same as the extension direction of the bone positions of the inner wall of the product.

7. The inclined ejection demoulding structure according to claim 1, characterized in that: A limit block is provided at the upper end of the inclined roof, the limit block is connected to the inner side of the inclined roof, and the limit block is arranged just above the supporting top rod.

8. The inclined ejection demoulding structure according to claim 7, characterized in that: The width of the limiting block is smaller than the distance between the two groups of bone positions of the product.

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