Large and small anti-dazzling screen common-mode production die assembly

Abstract

The utility model discloses a die assembly for common-die production of large and small anti-dazzling screens, which comprises an upper die core and a lower die core which are matched with each other after die assembly, the upper die core comprises a small-size inner hole punching head and a large-size outer hole punching sleeve which are concentric and have different diameters, and a positioning sleeve I is sleeved in an inner through hole of the large-size outer hole punching sleeve; the lower die core comprises a lower die part, a positioning sleeve I is arranged on the upper end face of the lower die part, a small-size outer hole punching sleeve is connected to an inner through hole of the positioning sleeve I in a sleeved mode, a positioning sleeve II is connected to a through hole of the small-size outer hole punching sleeve in a sleeved mode, and a small-size inner hole punching head is connected to an inner through hole of the positioning sleeve II in a sleeved mode. The diameter of the positioning circular boss is consistent with that of an inner through hole of the large-size outer hole punching sleeve, a punching groove consistent with the lower end face of the small-size outer hole punching sleeve in size is formed in the positioning circular boss, a material returning buffering circular ring is arranged in the punching groove, and a punching through hole is formed in the center of the positioning circular boss. According to the structure, two products with different sizes can be produced by the same mold.

Description

Technical Field

[0001] This utility model relates to the technical field of stamping equipment, specifically to a mold assembly for the co-molding of large and small light-shielding sheets. Background Technology

[0002] For optical lenses, due to the high precision requirements, high-precision polishing is generally required during manufacturing. This polishing process not only treats the working surfaces, but also places particular emphasis on the lens spacers. Lens spacers are essential components of a lens, maintaining the distance between the two lenses. They are typically thin, rectangular rings made of aluminum alloy, placed between the lenses to ensure a fixed spacing, thereby guaranteeing optical path stability and image quality.

[0003] Furthermore, lens spacers play a crucial role in optical lens design. Especially in high-end mobile phone lenses, spacers (also known as light-blocking rings) are used to eliminate stray light and improve lens quality. As the size of the lens varies, different sizes of spacers (also known as light-blocking rings) are required; the most common are... Figure 1 The two spacers shown are either a large-size spacer 11 or a small-size spacer 12. Currently, the stamping process for these two spacers requires two sets of molds. Each set of molds includes an upper mold core and a lower mold core. The upper mold core of each set of molds contains a punch head of the corresponding size. This structure results in relatively high equipment costs, and only one size spacer can be stamped at a time, leading to low processing efficiency. Therefore, an improvement is needed. Utility Model Content

[0004] The purpose of this invention is to provide a mold assembly for the co-molding of large and small light-shielding sheets, so as to solve the problems of low processing efficiency and high mold equipment cost of existing spacer stamping dies mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold assembly for co-molding large and small light-shielding sheets, comprising an upper mold core and a lower mold core that cooperate with each other after mold closing. The upper mold core includes a small-sized inner hole punching head with concentric but different diameters and a large-sized outer hole punching sleeve. A positioning sleeve one is sleeved inside the inner through hole of the large-sized outer hole punching sleeve. A small-sized outer hole punching sleeve is sleeved inside the inner through hole of the positioning sleeve one. A positioning sleeve two is sleeved inside the through hole of the small-sized outer hole punching sleeve. The small-sized inner hole punch head is sleeved at the inner through hole of the second part. The lower die core includes a lower die part. The upper end face of the lower die part is provided with a positioning round boss. The diameter of the positioning round boss is the same as the diameter of the inner through hole of the large-sized outer hole punch sleeve. The positioning round boss is provided with a punching groove with the same size as the lower end face of the small-sized outer hole punch sleeve. The punching groove is provided with a material ejection buffer ring. The center of the positioning round boss is provided with a punching through hole with the same diameter as the lower end face of the small-sized inner hole punch head.

[0006] Preferably, a stamping end face is provided between the inner side of the stamping through hole and the stamping groove for stamping a small spacer ring. The lower end face of the positioning sleeve is the same size as the stamping end face. The outer side of the stamping groove and the outer side of the positioning round boss cooperate to form a stamping end face for stamping a large spacer ring. The lower end face of the positioning sleeve is the same size as the stamping end face.

[0007] Preferably, the upper part of the small-sized inner hole punching head extends out of the positioning sleeve two, and the upper part of the small-sized inner hole punching head is also provided with a limiting platform one located outside the positioning sleeve two. The upper part of the positioning sleeve two extends out of the small-sized outer hole punching sleeve. The upper part of the positioning sleeve two exposed above the small-sized outer hole punching sleeve is provided with a limiting platform two. The part of the small-sized outer hole punching sleeve exposed above the positioning sleeve one is provided with a limiting platform three. The upper part of the small-sized outer hole punching sleeve extends out of the positioning sleeve one. The part of the positioning sleeve one exposed above the large-sized outer hole punching sleeve is provided with a limiting platform four. The upper part of the positioning sleeve one extends out of the large-sized outer hole punching sleeve. The upper part of the large-sized outer hole punching sleeve is provided with a limiting platform five.

[0008] Preferably, in order to facilitate unloading, the lower die part is provided with an unloading through hole that communicates with the stamping through hole and is located below the lower die part.

[0009] Preferably, an elastic ejector is provided inside the lower mold part below the ejector buffer ring. The elastic ejector is a layer of urethane or elastic foam, and the upper end face of the elastic ejector abuts against the lower end face of the ejector buffer ring, while the lower end face of the elastic ejector abuts against the interior of the lower mold part.

[0010] Preferably, the upper mold core is made of tungsten steel.

[0011] Preferably, the lower mold part is made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: this structure enables one set of equipment to stamp two spacers of different sizes at one time, further reducing equipment costs and improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the two existing diaphragm structures disclosed in Example 1;

[0014] Figure 2 This is a three-dimensional cross-sectional view of a mold assembly for co-molding large and small light-shielding sheets disclosed in Example 1;

[0015] Figure 3 This is a cross-sectional schematic diagram of a mold assembly for co-molding large and small light-shielding sheets disclosed in Example 1.

[0016] In the diagram: 1. Small inner hole stamping head; 2. Positioning sleeve 2; 3. Small outer hole stamping sleeve; 4. Positioning sleeve 1; 5. Large outer hole stamping sleeve; 6. Limiting platform 101; 102. Stamping through hole; 201. Limiting platform 2; 301. Limiting platform 3; 401. Limiting platform 4; 501. Lower die part; 6. Positioning round boss; 601. Stamping groove; 602. Unloading buffer ring; 603. Elastic ejector; 7. Stamping end face 1; 8. Stamping end face 2; 9. Unloading through hole; 10. Small spacer; 11. Large spacer; 12. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] Example 1:

[0019] Please see Figure 2 , Figure 3This embodiment discloses a mold assembly for co-molding large and small light-shielding sheets, including an upper mold core and a lower mold core that cooperate with each other after mold closing. The upper mold core includes a small-sized inner hole punch head 1 and a large-sized outer hole punch sleeve 5. A positioning sleeve 4 is sleeved in the inner through hole of the large-sized outer hole punch sleeve 5. A small-sized outer hole punch sleeve 3 is sleeved in the inner through hole of the positioning sleeve 4. A positioning sleeve 2 is sleeved in the through hole of the small-sized outer hole punch sleeve 3. The small-sized inner hole punch head 1 is sleeved in the inner through hole of the positioning sleeve 2. The lower mold core includes a lower mold part 6. A positioning round boss 601 is provided on the upper end face of the lower mold part 6. The diameter of the positioning round boss 601 is... The inner through hole diameter of the large-size outer hole stamping sleeve 5 is consistent. The positioning round boss 601 is provided with a stamping groove 602 with the same size as the lower end face of the small-size outer hole stamping sleeve 3. The stamping groove 602 is provided with a material ejection buffer ring 603. The center of the positioning round boss 601 is provided with a stamping through hole 102 with the same diameter as the lower end face diameter of the small-size inner hole stamping head 1. In this embodiment, the small-size inner hole stamping head 1, the positioning sleeve 2, the small-size outer hole stamping sleeve 3, the positioning sleeve 4, and the large-size outer hole stamping sleeve 5 are all concentric structures with different diameters, and the center of the lower stamping through hole 102 and the center of the small-size inner hole stamping head 1 are on the same central axis.

[0020] Preferably, a stamping end face 8 for stamping a small spacer ring 11 is provided between the inner side of the stamping through hole 102 and the stamping groove 602. The lower end face of the positioning sleeve 2 has the same size as the stamping end face 8. The outer side of the stamping groove 602 and the outer side of the positioning round boss 601 cooperate to form a stamping end face 9 for stamping a large spacer ring 12. The lower end face of the positioning sleeve 4 has the same size as the stamping end face 9. The upper part of the small inner hole stamping head 1 extends out of the positioning sleeve 2. A limiting platform is also provided on the upper part of the small inner hole stamping head 1 outside the positioning sleeve 2. 101, the upper part of the positioning sleeve 2 extends out of the small-sized outer hole stamping sleeve 3, the upper part of the positioning sleeve 2 exposed by the small-sized outer hole stamping sleeve 3 is provided with a limiting platform 201, the part of the small-sized outer hole stamping sleeve 3 exposed by the positioning sleeve 1 4 is provided with a limiting platform 301, the upper part of the small-sized outer hole stamping sleeve 3 extends out of the positioning sleeve 1 4, the part of the positioning sleeve 1 4 exposed by the large-sized outer hole stamping sleeve 5 is provided with a limiting platform 401, the upper part of the positioning sleeve 1 4 extends out of the large-sized outer hole stamping sleeve 5, and the upper part of the large-sized outer hole stamping sleeve 5 is provided with a limiting platform 501.

[0021] Preferably, in order to facilitate unloading, the lower die part 6 is provided with an unloading through hole 10 that communicates with the stamping through hole 102 and is located below the lower die part 6. By providing the unloading through hole 10, it is convenient to quickly unload the excess stamping waste through the unloading through hole 10 in the later stage.

[0022] Preferably, an elastic ejector 7 is provided inside the lower mold part 6 below the ejection buffer ring 603. The elastic ejector 7 is a layer of urethane or elastic foam, and the upper end face of the elastic ejector 7 abuts against the lower end face of the ejection buffer ring 603, while the lower end face of the elastic ejector 7 abuts against the interior of the lower mold part 6. In this embodiment, the elastic ejector 7 has a certain elasticity, and after the mold is opened, it lifts the ejection buffer ring 603 under the action of elastic force to achieve rapid demolding. Therefore, the elastic ejector 7 serves as the ejection power source.

[0023] Preferably, the upper mold core is made of tungsten steel.

[0024] Preferably, the lower mold part 6 is made of stainless steel.

[0025] In the aforementioned components: Positioning sleeve 2 and positioning sleeve 4 are both mating parts. Positioning sleeve 2 serves as a positioning part for the small-sized inner hole punching head 1 and the small-sized outer hole punching sleeve 3, while positioning sleeve 4 serves as a positioning part for the small-sized outer hole punching sleeve 3 and the large-sized outer hole punching sleeve 5. The elastic ejector 7 serves as a material ejector for the product scrap area. In this embodiment, the small-sized inner hole punching head 1, positioning sleeve 2, small-sized outer hole punching sleeve 3, positioning sleeve 4, and large-sized outer hole punching sleeve 5 are interlocked to form the upper mold core. During installation, the upper mold core is installed into the mold core hole of the existing upper mold base, and then... The mold base moves downwards, while the lower mold part 6 is fixed in place after being inserted into the mold core hole of the lower mold base. During operation, the upper mold core punches the lower mold part 6 until the mold is closed. Using the small-sized inner hole punch head 1, positioning sleeve 2, small-sized outer hole punch sleeve 3, positioning sleeve 4, and large-sized outer hole punch sleeve 5, in conjunction with the lower mold part 6, a small-sized spacer 11 and a large-sized spacer 12 are punched in one operation, thus completing the stamping and shearing forming process of the product. Therefore, this structure enables one set of equipment to punch two spacers of different sizes at once, further reducing equipment costs and improving work efficiency. The question then becomes how the upper mold core is installed onto the upper mold base. The installation of the lower mold part 6 into the mold core hole of the lower mold base is a conventional technique in this field. For the mold closing mechanism, there is a pushing mechanism above the upper mold base. When the pushing mechanism operates, it drives the upper mold base downwards. After the upper mold base moves downwards, it slowly approaches the lower mold base until the upper mold base and the lower mold base close together to achieve mold closing. As the upper mold base moves downwards, the lower end face of the upper mold core in this structure approaches the upper end face of the lower mold part 6. Due to the movable sleeve connection between the small-sized inner hole punch head 1, the second positioning sleeve 2, the small-sized outer hole punch sleeve 3, the first positioning sleeve 4, and the large-sized outer hole punch sleeve 5, during the mold closing process, the large-sized outer hole punch sleeve 5 will move downwards and fit into the positioning sleeve. Outside the round boss 601, the excess part of the outer ring of the large-size spacer 12 is cut off. Under the elastic action of the elastic ejector 7, the small-size outer hole punching sleeve 3 moves down appropriately, which will cut off the excess part of the inner ring of the large-size spacer 12, and also cut off the excess part of the outer ring of the small-size spacer 11. Similarly, the small-size inner hole punching head 1 moves down and cuts off the excess part of the inner ring of the small-size spacer 11. After the mold is opened, the product scrap area is quickly ejected under the elastic action of the elastic ejector 7. In order to quickly reset later, springs can be attached to the outer sleeves of the small-size inner hole punching head 1, the second positioning sleeve 2, the small-size outer hole punching sleeve 3, and the first positioning sleeve 4 to achieve quick reset.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold assembly for co-molding large and small light-shielding sheets, comprising an upper mold core and a lower mold core that cooperate with each other after mold closing, characterized in that, The upper die core includes a small-diameter inner hole punch head (1) and a large-diameter outer hole punch sleeve (5). A positioning sleeve one (4) is sleeved inside the inner through hole of the large-diameter outer hole punch sleeve (5). A small-diameter outer hole punch sleeve (3) is sleeved inside the inner through hole of the positioning sleeve one (4). A positioning sleeve two (2) is sleeved inside the through hole of the small-diameter outer hole punch sleeve (3). The small-diameter inner hole punch head (1) is sleeved at the inner through hole of the positioning sleeve two (2). The lower die core includes a lower die part (6). The upper end face of part (6) is provided with a positioning round boss (601). The diameter of the positioning round boss (601) is the same as the diameter of the inner through hole of the large-size outer hole stamping sleeve (5). The positioning round boss (601) is provided with a stamping groove (602) with the same size as the lower end face of the small-size outer hole stamping sleeve (3). The stamping groove (602) is provided with a material ejection buffer ring (603). The center of the positioning round boss (601) is provided with a stamping through hole (102) with the same diameter as the lower end face of the small-size inner hole stamping head (1).

2. The mold assembly for co-molding large and small light-shielding sheets according to claim 1, characterized in that, A stamping end face (8) for stamping a small spacer (12) is provided between the inner side of the stamping through hole (102) and the stamping groove (602). The lower end face of the positioning sleeve (2) is the same as the size of the stamping end face (8). The outer side of the stamping groove (602) and the outer side of the positioning round boss (601) cooperate to form a stamping end face (9) for stamping a large spacer (11). The lower end face of the positioning sleeve (4) is the same as the size of the stamping end face (9).

3. The mold assembly for co-molding large and small light-shielding sheets according to claim 2, characterized in that, The upper part of the small-sized inner hole punching head (1) extends out of the positioning sleeve two (2). The upper part of the small-sized inner hole punching head (1) is also provided with a limiting platform one (101) located outside the positioning sleeve two (2). The upper part of the positioning sleeve two (2) extends out of the small-sized outer hole punching sleeve (3). The upper part of the positioning sleeve two (2) exposed above the small-sized outer hole punching sleeve (3) is provided with a limiting platform two (201). The small-sized outer hole punching sleeve (3) is exposed A limiting platform three (301) is provided on the part of the positioning sleeve one (4), the upper part of the small-sized outer hole stamping sleeve (3) extends out of the positioning sleeve one (4), the part of the positioning sleeve one (4) that exposes the large-sized outer hole stamping sleeve (5) is provided with a limiting platform four (401), the upper part of the positioning sleeve one (4) extends out of the large-sized outer hole stamping sleeve (5), and a limiting platform five (501) is provided on the upper part of the large-sized outer hole stamping sleeve (5).

4. A mold assembly for co-molding large and small light-shielding sheets according to claim 1, 2, or 3, characterized in that, The lower die part (6) is provided with a discharge through hole (10) that communicates with the stamping through hole (102) and is located below the lower die part (6).

5. The mold assembly for co-molding large and small light-shielding sheets according to claim 4, characterized in that, An elastic ejector (7) is provided inside the lower mold part (6) below the ejection buffer ring (603). The elastic ejector (7) is a layer of urethane or elastic foam. The upper end face of the elastic ejector (7) abuts against the lower end face of the ejection buffer ring (603), and the lower end face of the elastic ejector (7) abuts against the interior of the lower mold part (6).

6. The mold assembly for co-molding large and small light-shielding sheets according to claim 5, characterized in that, The upper mold core is made of tungsten steel.

7. A mold assembly for co-molding large and small light-shielding sheets according to claim 5, characterized in that, The lower mold part (6) is made of stainless steel.

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