An injection mold

Abstract

The utility model discloses an injection mold relates to injection mold technical field, including die carrier, set up the back mould on die carrier and set up the ejection mechanism in die carrier, the ejection mechanism includes inclined ejector pin, be provided with the inclined ejector pin hole of adapting with inclined ejector pin on back mould, the inclined ejector pin sliding is arranged in the inclined ejector pin hole, the top of inclined ejector pin is provided with first forming part for the top wall of the product of forming, the side of inclined ejector pin is provided with second forming part for the side wall of the product of forming, when inclined ejector pin moves along the inclined ejector pin hole and drives the product stripping, first forming part top is on the top wall, and second forming part is separated from the side wall. The utility model injection mold has solved the demoulding problem of thin -walled deep -cavity product, has improved product yield and production efficiency, has reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and specifically to an injection mold. Background Technology

[0002] As injection molded products become smaller, more precise, and more complex, the market demands increasingly higher standards for injection molds, requiring a balance between demolding efficiency, product quality, and mold durability.

[0003] Some thin-walled deep-cavity products have very thin sidewalls and large sidewall depths, forming deep cavities between the sidewalls. Due to the thin walls, ejector pins cannot be used for ejection, and the deep cavities make it easy for these products to stick to the mold core, making it difficult to demold them smoothly. Even if they are demolded, the product yield cannot be guaranteed. In other words, traditional injection molds cannot meet the production needs of these products. Therefore, it is necessary to design an injection mold for processing thin-walled deep-cavity products to meet the modern injection molding industry's demand for high-precision and low-loss production. Utility Model Content

[0004] To address the aforementioned deficiencies in existing technologies, this utility model provides an injection mold that solves the demolding problem for thin-walled, deep-cavity products, improves product yield and production efficiency, and reduces production costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An injection mold includes a mold base, a rear mold disposed on the mold base, and an ejection mechanism disposed within the mold base. The ejection mechanism includes an angled ejector pin. The rear mold has an angled ejector pin hole adapted to the angled ejector pin, and the angled ejector pin slidably passes through the angled ejector pin hole. The top of the angled ejector pin has a first forming part for forming the top wall of the product, and the side of the angled ejector pin has a second forming part for forming the side wall of the product. When the angled ejector pin moves obliquely along the angled ejector pin hole to drive the product to demold, the first forming part abuts against the top wall, and the second forming part disengages from the side wall.

[0007] The oblique ejector pin includes a straight section and an oblique section connected to each other, and the first forming part and the second forming part are both disposed on the oblique section.

[0008] The slope of the inclined segment relative to the straight segment is 0.5° to 3°.

[0009] The inclined section has a step on its side, which is a third forming part for forming the bottom wall of the product. When the product is demolded, the third forming part rests on the bottom wall.

[0010] The ejection mechanism further includes an ejection seat with a stepped hole, and the oblique ejector pin further includes an ejector pin head. The ejector pin head is disposed at the end of the straight section and forms a stepped structure with the straight section. The stepped structure is fixedly disposed in the stepped hole.

[0011] The ejector seat includes an upper ejector plate and a lower ejector plate stacked together, which together form the stepped hole.

[0012] The rear mold includes a rear template and a rear mold core disposed on the rear template, wherein the angled ejector pin hole penetrates the rear mold core and the rear template.

[0013] The mold frame includes a mold frame plate and two support plates spaced apart on the mold frame plate. The rear template is set on the two support plates. The mold frame plate, the rear template, and the two support plates together form an installation space. The ejector seat is slidably disposed within the installation space.

[0014] A guide structure is provided between the ejector seat and the rear template.

[0015] The guide structure includes a guide hole on the rear template and a guide post on the ejector seat, wherein the guide post is slidably disposed within the guide hole.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are:

[0017] The core of the injection mold provided by this utility model is the cooperation between the angled ejector pin and the angled ejector pin hole. When the angled ejector pin moves obliquely along the angled ejector pin hole to drive the product to demold, the first molding part presses against the top wall of the product to support the product, while the second molding part detaches from the side wall of the product to reduce the ejection friction of the product during demolding and the clamping force of the angled ejector pin on the product, thereby ensuring smooth demolding of the product. Compared with the prior art, the injection mold of this utility model solves the demolding problem of thin-walled deep cavity products, improves demolding stability, increases product yield and production efficiency, and reduces production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the injection mold of this utility model;

[0019] Figure 2 yes Figure 1 A sectional view;

[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the oblique ejector pin;

[0021] Figure 4 yes Figure 2Enlarged view of section A;

[0022] Figure 5 yes Figure 4 A schematic diagram of the ejection state;

[0023] In the diagram: 1. Mold frame; 11. Mold frame plate; 12. Support plate; 2. Rear mold; 21. Rear template; 22. Rear mold core; 3. Ejector seat; 31. Upper ejector plate; 32. Lower ejector plate; 33. Guide post; 4. Angled ejector pin; 41. Straight section; 42. Angled section; 421. First forming part; 422. Second forming part; 423. Third forming part; 43. Ejector head; 5. Product. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0025] like Figures 1 to 5 As shown, an injection mold is disclosed, including a mold base 1, a rear mold 2 disposed on the mold base 1, and an ejection mechanism disposed within the mold base 1. The ejection mechanism includes an angled ejector pin 4. The rear mold 2 is provided with an angled ejector pin hole adapted to the angled ejector pin 4, and the angled ejector pin 4 slides through the angled ejector pin hole. The top of the angled ejector pin 4 is provided with a first forming part 421 for forming the top wall of the product 5, and the side of the angled ejector pin 4 is provided with a second forming part 422 for forming the side wall of the product 5. When the angled ejector pin 4 moves obliquely along the angled ejector pin hole to drive the product 5 to demold, the first forming part 421 abuts against the top wall of the product 5, and the second forming part 422 disengages from the side wall of the product 5.

[0026] In this embodiment, product 5 is a thin-walled deep-cavity product. The core of this injection mold is the cooperation between the angled ejector pin 4 and the angled ejector pin hole. When the angled ejector pin 4 moves obliquely along the angled ejector pin hole to drive product 5 to demold, the first molding part 421 presses against the top wall of product 5 to support product 5, while the second molding part 422 disengages from the side wall of product 5 to reduce the ejection friction of product 5 during demolding and the clamping force of the angled ejector pin 4 on product 5, thereby ensuring that product 5 can be demolded smoothly, thus solving the demolding problem of thin-walled deep-cavity products.

[0027] In this embodiment, the angled ejector pin 4 includes a straight section 41 and an angled section 42 connected together. The straight section 41 has a cylindrical cross-section, and the angled section 42 has a square cross-section. The first forming part 421 and the second forming part 422 are both disposed on the angled section 42, and the angle of the angled section 42 relative to the straight section 41 is 0.5° to 3°. This arrangement improves the support strength and ejection effect of the angled ejector pin 4, further ensuring the demolding effect of the product 5. Of course, the angled section 42 can also be provided with other angles, which are designed according to actual needs and are not limited here.

[0028] In this embodiment, a step is provided on the side of the inclined section 42. This step is a third forming part 423 for forming the bottom wall of the product 5. When the product 5 is demolded, the third forming part 423 presses against the bottom wall of the product 5 to support the product 5. This arrangement further improves the ejection effect of the inclined ejector pin 4 and ensures the demolding effect of the product 5.

[0029] Specifically, the first molding part 421, the second molding part 422, and the third molding part 423 are sequentially connected from top to bottom. The molding surface of the first molding part 421 is parallel to the molding surface of the third molding part 423, and the molding surface of the second molding part 422 connects the molding surface of the first molding part 421 and the molding surface of the third molding part 423. Of course, the first molding part 421, the second molding part 422, and the third molding part 423 can also adopt other arrangements, depending on the structure of the product 5. This embodiment does not limit this.

[0030] The ejection mechanism in this embodiment also includes an ejection seat 3, which has a stepped hole. The oblique ejector pin 4 also includes an ejector head 43, which is located at the end of the straight section 41 and forms a stepped structure with the straight section 41. The stepped structure is fixedly installed in the stepped hole.

[0031] Specifically, the ejector seat 3 includes an upper ejector plate 31 and a lower ejector plate 32 stacked together, which together form the aforementioned stepped hole. This arrangement enables a detachable connection between the ejector seat 3 and the inclined ejector pin 4, improving the ease of assembly and disassembly.

[0032] In this embodiment, the rear mold 2 includes a rear template 21 and a rear mold core 22 disposed on the rear template 21. The rear mold core 22 is used to form the product 5. The angled ejector pin hole passes through the rear mold core 22 and the rear template. The mold frame 1 includes a mold frame plate 11 and two support plates 12 disposed at intervals on the mold frame plate 11. The rear template 21 is disposed on the two support plates 12. The mold frame plate 11, the rear template 21 and the two support plates 12 together form an installation space. The ejector seat 3 is slidably disposed in the installation space.

[0033] To ensure the accuracy of the relative position between the angled ejector pin 4 and the rear mold core 22 when they move, a guide structure is provided between the ejector seat 3 and the rear mold plate 21 in this embodiment.

[0034] Specifically, the guide structure includes a guide hole provided on the rear template 21 and a guide post 33 provided on the ejector seat 3, with the guide post 33 slidably disposed in the guide hole.

[0035] During use, when the angled ejector pin 4 moves obliquely along the angled ejector pin hole to drive the product 5 to demold, the first forming part 421 presses against the top wall of the product 5 to support the product 5, the third forming part 423 presses against the bottom wall of the product 5 to support the product 5, and the second forming part 422 disengages from the side wall of the product 5 to reduce the ejection friction of the product 5 during the demolding process and the clamping force of the angled ejector pin 4 on the product 5, thereby ensuring that the product 5 is demolded smoothly.

[0036] The above describes a preferred embodiment of the injection mold of this utility model. Of course, there are many other embodiments, which will not be elaborated here. In summary, the injection mold of this utility model solves the demolding problem of thin-walled, deep-cavity products, improves demolding stability, increases product yield and production efficiency, and reduces production costs.

[0037] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. An injection mold, comprising a mold base, a rear mold disposed on the mold base, and an ejection mechanism disposed within the mold base, characterized in that, The ejection mechanism includes an angled ejector pin. The rear mold is provided with an angled ejector pin hole adapted to the angled ejector pin. The angled ejector pin slides through the angled ejector pin hole. The top of the angled ejector pin is provided with a first forming part for forming the top wall of the product. The side of the angled ejector pin is provided with a second forming part for forming the side wall of the product. When the angled ejector pin moves obliquely along the angled ejector pin hole to drive the product to demold, the first forming part abuts against the top wall, and the second forming part disengages from the side wall.

2. The injection mold according to claim 1, characterized in that, The angled ejector pin includes a straight section and an angled section connected together, and the first forming part and the second forming part are both disposed on the angled section.

3. The injection mold according to claim 2, characterized in that, The slope of the inclined segment relative to the straight segment is 0.5° to 3°.

4. The injection mold according to claim 2, characterized in that, The inclined section has a step on its side, which is a third forming part for forming the bottom wall of the product. When the product is demolded, the third forming part presses against the bottom wall.

5. The injection mold according to claim 2, characterized in that, The ejection mechanism further includes an ejection seat with a stepped hole, and the oblique ejector pin further includes an ejector pin head. The ejector pin head is disposed at the end of the straight section and forms a stepped structure with the straight section. The stepped structure is fixedly disposed in the stepped hole.

6. The injection mold according to claim 5, characterized in that, The ejector seat includes an upper ejector plate and a lower ejector plate stacked together, which together form the stepped hole.

7. The injection mold according to claim 5, characterized in that, The rear mold includes a rear template and a rear mold core disposed on the rear template, and the angled ejector pin hole penetrates the rear mold core and the rear template.

8. The injection mold according to claim 7, characterized in that, The mold frame includes a mold frame plate and two support plates spaced apart on the mold frame plate. The rear template is set on the two support plates. The mold frame plate, the rear template, and the two support plates together form an installation space. The ejector seat is slidably disposed within the installation space.

9. The injection mold according to claim 8, characterized in that, A guide structure is provided between the ejector seat and the rear template.

10. The injection mold according to claim 9, characterized in that, The guide structure includes a guide hole on the rear template and a guide post on the ejector seat, the guide post being slidably disposed within the guide hole.

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