Anti-dazzling screen punching die

Abstract

The utility model belongs to the technical field of optical systems, and particularly relates to an anti-dazzling screen punching die which comprises a front punching die used for carrying out front punching on the right side face of an anti-dazzling screen to form a vertical section and an inclined cutting die used for carrying out inclined plane punching on the left side face of the anti-dazzling screen to form an inclined section. Compared with the prior art, the anti-dazzling screen has the advantages that the inclined section is formed on the left side surface of the anti-dazzling screen through ingenious structural design and a die punching method, so that the reflecting area can be reduced, the reflecting angle can be changed, the reflectivity can be reduced, and the effect of removing stray light can be finally achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical systems, and in particular relates to a light shielding sheet punching die. Background Art

[0002] With the advancement of technology and the improvement of people's quality of life, mobile phones, flat panel lights and other portable electronic products have developed rapidly, which has also led to an increasing demand for the imaging lenses used in them. Lenses generally include a lens barrel, a lens group assembled in the lens barrel and a light shield. The function of the light shield is to adjust the light flux in the optical system. When external light enters the lens, the light shield between the lenses can block the entry of unwanted light.

[0003] Existing light shields consist of parallel upper and lower surfaces, connected by left and right sides. Both the left and right sides are vertically oriented. This structure prevents stray light from being effectively removed, resulting in poor lens optical quality. In actual use, several light shields are arranged in a ring, with their left sides collectively forming an aperture. The aperture's size can be adjusted by moving the light shields, thereby controlling the amount of light allowed in.

[0004] In view of this, it is indeed necessary to provide a light-shielding sheet punching mold, which, through clever structural design, can form an inclined section on the left side of the light-shielding sheet, which can reduce the reflection area, change the reflection angle, reduce the reflectivity, and ultimately achieve the effect of removing stray light. Utility Model Content

[0005] The purpose of the present utility model is to provide a light-shielding sheet punching die to address the deficiencies of the prior art. Through its ingenious structural design, it can form an inclined section on the left side of the light-shielding sheet, thereby reducing the reflection area, changing the reflection angle, and lowering the reflectivity, thereby ultimately achieving the effect of removing stray light.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A light shielding sheet punching die comprises a straight punching die for punching the right side of the light shielding sheet to form a vertical section and a bevel cutting die for punching the left side of the light shielding sheet to form an inclined section.

[0008] As an improvement of the light shielding sheet punching die of the utility model, the positive punching die includes an upper pad, an upper clamping plate arranged below the upper pad, and an upper punch arranged in the upper clamping plate.

[0009] As an improvement to the light shielding sheet punching die of the present invention, the upper pad is further connected to a first driving mechanism for driving the positive punching die to move up and down.

[0010] As an improvement of the sunshade sheet punching die of the utility model, from bottom to top, the bevel cutting die includes a lower die base, a lower pad, a lower template, a slider seat, a first side clamping plate, a punch fixing block and a second side clamping plate. From left to right, a side cutting slide, a cutting edge and a floating block that can move up and down are provided in the lower template. A floating pressing block is provided on one side of the floating block, and a side cutting punch is provided between the first side clamping plate and the punch fixing block.

[0011] As an improvement to the shading sheet punching die of the present invention, the punch fixing block is further connected to a second driving mechanism that can drive the punch fixing block and the side-cutting punch to move toward the lower left and upper right.

[0012] As an improvement to the shading sheet punching die of the utility model, the top surface of the side-cutting slide is an inclined surface inclined to the left.

[0013] As an improvement to the die for punching the light shielding sheet of the utility model, the top surface of the floating block is provided with an inclined surface inclined to the left.

[0014] As an improvement of the shading sheet punching die of the utility model, the floating pressing block is arranged on the upper surface of the lower template.

[0015] When using, the specific steps include:

[0016] In the first step, the upper punch presses down and interacts with the blade to cut out the right side shape of the product; and after the punching is completed, it is lifted upward;

[0017] In the second step, the floating pressing block and the floating block cooperate to press and fix the cut product;

[0018] In the third step, the punch fixing block moves to the lower left, taking the side cutting punch with it; the side cutting slide guides the side cutting punch to ensure that the tangent position of the side cutting punch and the product is stable;

[0019] The fourth step is that when the side cutting punch runs tangent to the left edge of the product, the edge chamfer of the product is formed - the left bevel.

[0020] Compared with the existing technology, the present invention adopts a clever structural design and a mold punching method to form an inclined section on the left side of the shading sheet, which can reduce the reflection area, change the reflection angle, and reduce the reflectivity, ultimately achieving the effect of removing stray light. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 This is a cross-sectional view of a light shielding sheet formed by punching using the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0024] like Figure 1 As shown, the utility model is a light shielding sheet punching die, comprising a straight punching die 1 for punching the right side of the light shielding sheet to form a vertical section 10 and a bevel cutting die 2 for bevel cutting the left side of the light shielding sheet to form an inclined section 20.

[0025] The punch die 1 includes an upper backing plate 11 , an upper clamping plate 12 disposed below the upper backing plate 11 , and an upper punch 13 disposed in the upper clamping plate 12 .

[0026] The upper pad 11 is also connected to a first driving mechanism for driving the punch die 1 to move up and down.

[0027] From bottom to top, the beveling die 2 includes a lower die base 21, a lower pad 22, a lower template 23, a slider seat 24, a first side clamp 25, a punch fixing block 26 and a second side clamp 27. From left to right, a side cutting slide 28, a cutting edge 29 and a floating block 210 that can move up and down are provided in the lower template 23. A floating pressing block 211 is provided on one side of the floating block 210, and a side cutting punch 212 is provided between the first side clamp 25 and the punch fixing block 26.

[0028] The punch fixing block 26 is also connected to a second driving mechanism that can drive the punch fixing block 26 and the side cutting punch 212 to move toward the lower left and upper right.

[0029] The top surface of the side-cutting slideway 28 is an inclined surface inclined to the left.

[0030] The top surface of the slider 210 is provided with an inclined surface inclined to the left.

[0031] The floating pressing block 211 is disposed on the upper surface of the lower template 23 .

[0032] When using, the specific steps include:

[0033] In the first step, the upper punch 13 presses down and interacts with the blade 29 to cut out the right side shape of the product; and after the punching is completed, it is lifted upward;

[0034] In the second step, the floating pressing block 211 and the floating block 210 cooperate to press and fix the cut product;

[0035] In the third step, the punch fixing block 26 moves to the lower left, bringing the side cutting punch 212 with it; the side cutting slide 28 guides the side cutting punch 212 so that the side cutting punch 212 is in a stable position tangent to the product;

[0036] In the fourth step, when the side cutting punch 212 runs tangent to the left edge of the product, the product edge chamfer - the left bevel is formed, and the cross-sectional structure of the obtained light shielding sheet is as follows: Figure 2 shown.

[0037] The utility model adopts an ingenious structural design and a die punching method to form an inclined section on the left side of the light shielding sheet, which can reduce the reflection area, change the reflection angle, reduce the reflectivity, and ultimately achieve the effect of removing stray light.

[0038] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and alterations to the thickness and material of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. A die for punching a light shield, characterized in that: It includes a punching die for punching the right side of the light shielding sheet to form a vertical section, and a bevel die for punching the left side of the light shielding sheet to form an inclined section; The positive punch die includes an upper pad, an upper clamping plate arranged below the upper pad, and an upper punch arranged in the upper clamping plate; From bottom to top, the beveling die includes a lower die base, a lower pad, a lower template, a slider seat, a first side clamp, a punch fixing block and a second side clamp. From left to right, a side cutting slide, a cutting edge and a floating block that can move up and down are provided in the lower template. A floating pressing block is provided on one side of the floating block, and a side cutting punch is provided between the first side clamp and the punch fixing block.

2. The light shielding sheet punching die according to claim 1, characterized in that: The upper pad is also connected to a first driving mechanism for driving the positive punch die to move up and down.

3. The light shielding sheet punching die according to claim 1, characterized in that: The punch fixing block is also connected to a second driving mechanism that can drive the punch fixing block and the side cutting punch to move toward the lower left and upper right.

4. The light shielding sheet punching die according to claim 1, characterized in that: The top surface of the side-cutting slideway is a slope inclined to the left.

5. The light shielding sheet punching die according to claim 1, characterized in that: The top surface of the floating block is provided with an inclined surface inclined to the left.

6. The light shielding sheet punching die according to claim 1, characterized in that: The floating pressing block is arranged on the upper surface of the lower template.

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