A tooling fixture for filter assembly

Abstract

The present invention discloses a tooling fixture for filter assembly, which belongs to the technical field of mobile phone camera filter assembly, including a carrier plate, a support plate and a pressing block, wherein the carrier plate is provided with a product through hole and a first positioning structure, the product through hole is used to cover a carrier film, the carrier film is used to connect a bracket with a filter attached thereto, and the bracket is located in the product through hole; the support plate is used to be placed on the side of the carrier film away from the carrier plate, the support plate is provided with a sharp structure and a second positioning structure, the tip of the sharp structure corresponds to the bracket, and the second positioning structure is used to cooperate with the first positioning structure; the pressing block is provided with an abutment structure, and the abutment structure is used to abut the carrier plate or penetrate into the product through hole to abut the carrier film. The carrier film of the present invention can be punctured by the sharp structure on the support plate, so that the cavity surrounded by the bracket and the carrier film has an opening, so that the gas in the cavity is discharged during the baking process, which can avoid the problem of filter offset and warping caused by gas expansion during the baking and curing process.

Description

Technical Field

[0001] The invention relates to the technical field of mobile phone camera filter assembly, and in particular to a tooling fixture for filter assembly. Background Art

[0002] In the context of the rapid development of modern communication technology, smartphones have become an indispensable tool in people's daily lives, and the improvement of their camera functions has become one of the key points of technological competition. In order to achieve higher definition, wider viewing angles, and more accurate color reproduction, the design of mobile phone cameras is becoming increasingly complex, among which the application of filters is particularly important. As the core component of the camera, the filter is responsible for filtering light of a specific wavelength and has a direct impact on the image quality.

[0003] Currently, multiple filters are generally integrated inside mobile phone cameras to meet different shooting needs, such as infrared cut-off filters, polarization filters, etc. The precise assembly of these filters has become a key link to ensure the stability and improvement of camera performance. However, in the process of assembling the filter and the bracket, there are extremely high precision requirements, especially the shape center offset must be strictly controlled within ±25 microns, and the plane height difference between the filter and the bracket after assembly must not exceed 10 microns. These standards pose a great challenge to the assembly process.

[0004] In traditional filter assembly technology, in order to deal with minor errors and gas escape problems during the assembly process, some brackets are specially designed to set up gas escape holes at the corners. After the filter and the bracket are attached, these gas escape holes can effectively release the gas generated by the bonding, avoiding the position deviation or warping of the filter caused by gas expansion during the subsequent baking and curing process, thereby ensuring the accuracy and stability of the filter assembly.

[0005] However, there are also bracket designs without air escape holes in the prior art. When the filter is assembled and cured, a relatively closed cavity is formed between the bracket, the filter and the carrier film. As the baking temperature rises, the gas in the cavity expands rapidly, generating huge internal pressure. This pressure cannot be effectively released, which will directly cause the filter to rotate and shift or even tilt on the bracket, seriously deviating from the preset assembly size specification range, greatly affecting the imaging quality and reliability of the camera. Summary of the invention

[0006] The purpose of the present invention is to provide a tool and fixture for filter assembly to solve the problems existing in the above-mentioned prior art. The carrier film can be punctured by the sharp structure on the support plate, so that the cavity surrounded by the bracket and the carrier film has an opening, so that the gas in the cavity can be discharged during the baking process, which can avoid the problem of filter deviation and warping caused by gas expansion during the baking and curing process.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a tooling jig for assembling an optical filter, comprising a carrying disc, a supporting plate and a pressing block, wherein the carrying disc is provided with a product through hole and a first positioning structure, wherein the product through hole is used to cover a carrying film, wherein the carrying film is used to connect a bracket to which the optical filter is attached, and wherein the bracket is located in the product through hole; wherein the supporting plate is used to be placed on a side of the carrying film away from the carrying disc, wherein the supporting plate is provided with a sharp structure and a second positioning structure, wherein the tip of the sharp structure corresponds to the bracket, and wherein the second positioning structure is used to cooperate with the first positioning structure; wherein the pressing block is provided with an abutting structure, wherein the abutting structure is used to abut against the carrying disc or to penetrate into the product through hole to abut against the carrying film.

[0009] In one embodiment, the height from the bottom of the filter to the bottom of the bracket is the height of the cavity, and the height of the sharp structure is less than the height of the cavity.

[0010] In one embodiment, the bracket is located in the middle of the product through hole, an annular gap is provided between the bracket and the inner wall of the product through hole, and the abutment structure is used to penetrate the annular gap.

[0011] In one embodiment, a top slot is provided in the middle of the abutting structure, the width of the top slot is greater than the width of the bracket, and the depth of the top slot is greater than the height of the bracket.

[0012] In one embodiment, the spacing between the abutment structures is greater than or equal to the width of the product through hole, and the sum of the height of the abutment structure and the thickness of the supporting plate is greater than the height of the bracket.

[0013] In one embodiment, the first positioning structure adopts a positioning hole, and the second positioning structure adopts a positioning column.

[0014] In one embodiment, the pressing block is provided with a guide hole, the position and size of the guide hole are matched with the positioning post, and the depth of the guide hole is greater than the height of the positioning post exposed from the carrier plate.

[0015] In one embodiment, a pressing assembly is further included, and the pressing assembly is used to provide pressure for pressing the pressing block downward.

[0016] In one embodiment, the pressing assembly includes a base, a fixed column and a squeezing handle, the fixed column is vertically installed on the base, the support plate is horizontally installed on the base or horizontally installed on the fixed column, the first end of the squeezing handle is hingedly connected to the fixed column, the second end of the squeezing handle is a gripping end, and the middle part of the squeezing handle is used to connect the pressing block.

[0017] In one embodiment, a connecting rod is further included, wherein a first end of the connecting rod is hingedly connected to the squeezing handle, and a second end of the connecting rod is hingedly connected to the pressing block.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention utilizes a carrying plate to connect a carrying film to support the carrying film. Under the action of a pressing block, the carrying film is punctured by a sharp structure on the supporting plate, so that a cavity surrounded by the bracket and the carrying film has an opening, so that the gas in the cavity is discharged during the baking process, which can avoid the problem of filter deviation and warping caused by gas expansion during the baking and curing process, ensure the accuracy and stability of the filter assembly, and thus improve the overall performance of the mobile phone camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention;

[0022] Figure 2 is a cross-sectional view of a carrier plate connected with a carrier film and a bracket in an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A top view of

[0024] Figure 4 for Figure 2 Schematic diagram of the state after the middle load-bearing film is punctured;

[0025] Among them, 1. base; 2. fixed column; 3. support plate; 4. positioning column; 5. sharp structure; 6. first fixed block; 7. first connecting block; 8. pressure block; 9. abutment structure; 10. guide hole; 11. second fixed block; 12. extrusion handle; 13. connecting rod; 14. second connecting block; 15. hinge shaft; 16. bearing film; 17. bearing plate; 18. bracket; 19. filter; 20. cavity; 21. opening; 22. positioning hole; 23. product through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a tooling jig for filter assembly to solve the problems existing in the prior art. The carrier film can be punctured by the sharp structure on the support plate, so that the cavity surrounded by the bracket and the carrier film has an opening, so that the gas in the cavity can be discharged during the baking process, which can avoid the problem of filter deviation and warping caused by gas expansion during the baking and curing process.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1~Figure 4As shown, the present invention provides a tooling fixture for filter assembly, which is mainly used after the filter 19 is assembled and before baking, and includes a carrier plate 17, a support plate 3 and a pressing block 8. The carrier plate 17 can be made of metal material and has good supporting capacity. The carrier plate 17 is provided with a product through hole 23 and a first positioning structure. The product through hole 23 can be in the shape of a square hole or a round hole. One end of the product through hole 23 is used to cover the carrier film 16. The carrier film 16 is an auxiliary material used in the assembly process of the filter 19. The subsequent process requires high-temperature baking, and a high-temperature resistant material, such as a high-temperature resistant tape, can be used. The carrier film 16 can be used to connect (for example, bond) the bracket 18 with the filter 19 attached to it on the carrier film 16 for placement. The bracket 18 has no venting hole structure. After applying glue on the bracket 18, it is used to bond the filter 19, and the bracket 18 and the filter 19 are fixed by baking. When connecting the filter 19 and the carrier film 16, the filter 19 faces upward, the bottom opening of the bracket 18 connects the carrier film 16, and the bracket 18 and the carrier film 16 enclose a cavity 20. Multiple filters 19 can be placed horizontally and vertically on the carrier film 16 at one time and baked uniformly. The bracket 18 is located in the product through hole 23, and the carrier plate 17 can be used to form a support for the carrier film 16 to avoid the situation that the carrier film 16 is deformed or moved and cannot be pierced when the sharp structure 5 pierces the carrier film 16, and ensure that the carrier film 16 is smoothly pierced to form an opening 21 connected to the cavity 20. The support plate 3 is used to be placed on the side of the carrier film 16 away from the carrier plate 17, that is, the carrier film 16 is located between the carrier plate 17 and the support plate 3. The support plate 3 is provided with a sharp structure 5 and a second positioning structure, and the tip of the sharp structure 5 corresponds to the bracket 18. When the carrier plate 17 and the support plate 3 are relatively displaced, the sharp structure 5 can pierce the carrier film 16. The second positioning structure is used to cooperate with the first positioning structure, and the two can respectively use the positioning hole 22 and the positioning column 4, and can be interchangeable. The pressing block 8 is provided with an abutting structure 9, and the pressing block 8 can be pressed down manually or mechanically. The abutting structure 9 is used to abut the carrier plate 17 or penetrate into the product through hole 23 to abut the carrier film 16, and finally make the carrier film 16 move toward the sharp structure 5 and puncture the carrier film 16, forming an opening 21 in the carrier film 16, and the opening 21 is used to discharge gas during baking, reducing the influence of air during baking.

[0030] The present invention utilizes a carrying plate 17 to connect a carrying film 16 to support the carrying film 16. Under the action of the pressing block 8, the carrying film 16 is punctured by the sharp structure 5 on the supporting plate 3, so that the cavity 20 surrounded by the bracket 18 and the carrying film 16 has an opening 21, so that the gas in the cavity 20 is discharged during the baking process, which can avoid the problem of filter 19 offset and warping caused by gas expansion during the baking and curing process, ensure the accuracy and stability of the filter 19 assembly, and thus improve the overall performance of the mobile phone camera.

[0031] In one embodiment, the height of the cavity 20 is from the bottom of the filter 19 to the bottom of the bracket 18. After the bracket 18 is connected to the carrier film 16, the cavity 20 is in a closed form. At this time, the distance between the carrier film 16 and the filter 19 is the height of the cavity 20. In order to avoid the sharp structure 5 from affecting the filter 19 when piercing the carrier film 16, the height of the sharp structure 5 is designed to be smaller than the height of the cavity 20. Even if the sharp structure 5 moves to the maximum position relative to the carrier film 16, the tip of the sharp structure 5 will not touch the filter 19.

[0032] In one embodiment, the bracket 18 is located in the middle of the product through hole 23, and there is an annular gap between the bracket 18 and the inner wall of the product through hole 23, that is, after the supporting film 16 is connected to the supporting plate 17, the bracket 18 does not contact the supporting plate 17. After such a configuration, on the one hand, it can avoid the contact between the supporting plate 17 and the bracket 18 to affect the bonding accuracy of the filter 19 and the bracket 18, and on the other hand, a gap is reserved for the entry of the abutment structure 9. The abutment structure 9 can pass through the annular gap, so that when the pressing block 8 moves, the abutment structure 9 can abut the supporting film 16, thereby pushing the supporting film 16 to contact the sharp structure 5 and puncture the supporting film 16.

[0033] In one embodiment, a top groove is set in the middle of the abutment structure 9. At this time, the abutment structure 9 forms a ring shape, which can enter the annular gap between the bracket 18 and the supporting plate 17. The width of the top groove is greater than the width of the bracket 18, and the depth of the top groove is greater than the height of the bracket 18, so as to avoid contact between the abutment structure 9 and the bracket 18 or the filter 19. The abutment structure 9 can be in the shape of a circular ring or a rectangle.

[0034] In one embodiment, in addition to the contact between the abutting structure 9 and the carrier film 16 to puncture the carrier film 16, the abutting structure 9 can also be used to contact the carrier plate 17 to puncture the carrier film 16. In this case, the spacing between the abutting structures 9 is greater than or equal to the width of the product through hole 23, and the abutting structure 9 contacts the carrier plate 17 without entering the product through hole 23. The sum of the height of the abutting structure 9 and the thickness of the carrier plate 17 is greater than the height of the bracket 18. When the pressing block 8 is used to apply pressure to the carrier plate 17, the filter 19 and the bracket 18 are never in contact with the pressing block 8 and the abutting structure 9.

[0035] In one embodiment, the first positioning structure on the carrier plate 17 uses a positioning hole 22, and the second positioning structure on the support plate 3 uses a positioning column 4. When the carrier plate 17 is installed, the positioning hole 22 can be sleeved in the positioning column 4 to achieve the positioning of the carrier plate 17 and the support plate 3. The positioning column 4 can be diagonally arranged on the carrier plate 17, and two positioning columns 4 can determine the relative position of the carrier plate 17 and the support plate 3. That is to say, the number of the positioning columns 4 is at least two, and of course, more positioning columns 4 can also be set.

[0036] In one embodiment, the pressing block 8 is provided with a guide hole 10, and the position and size of the guide hole 10 are matched with the positioning column 4. That is, when the pressing block 8 is used to press down the supporting plate 17 or the supporting film 16, the guide hole 10 can be sleeved on the positioning column 4, and the depth of the guide hole 10 is greater than the height of the positioning column 4 exposed from the supporting plate 17. When the pressing block 8 is pressed down to contact with the support plate 3, the top of the positioning column 4 still does not contact the top of the guide hole 10, that is, the guide hole 10 will not cause an obstacle to the downward movement of the pressing block 8.

[0037] In one embodiment, a pressing assembly is further included, which is used to provide pressure for pressing the pressing block 8 downward. The pressing assembly can apply pressure manually or electrically. The pressing assembly can adopt a telescopic rod structure, the telescopic direction of the telescopic rod is the same as the moving direction of the pressing block 8, and the moving end of the telescopic rod is connected to the pressing block 8.

[0038] In one embodiment, the pressing assembly includes a base 1, a fixed column 2 and a squeezing handle 12. The fixed column 2 is vertically mounted on the base 1, and the support plate 3 is horizontally mounted on the base 1 or on the fixed column 2. When mounted on the fixed column 2, the first fixed block 6 can be mounted on the fixed column 2, and then the support plate 3 is connected to the first fixed block 6 through the first connecting block 7. The first end of the squeezing handle 12 is hingedly connected to the fixed column 2. When the squeezing handle 12 is installed, the second fixed block 11 can be mounted on the fixed column 2, and the second fixed block 11 is located above the first fixed block 6. Then the squeezing handle 12 is hingedly connected to the second fixed block 11 through the hinge shaft 15. The second end of the squeezing handle 12 is a gripping end, and the middle part of the squeezing handle 12 is used to connect the pressing block 8. When the pressing block 8 is connected, a hinged manner can be adopted. When the gripping end is moved up and down, the pressing block 8 can be driven to move up and down.

[0039] In one embodiment, a connecting rod 13 is further included, the first end of the connecting rod 13 is hingedly connected to the squeezing handle 12, the second end of the connecting rod 13 is hingedly connected to the pressing block 8, and a second connecting block 14 may be provided on the top of the pressing block 8, the second connecting block 14 is fixedly connected to the pressing block 8, and the second connecting block 14 is hingedly connected to the connecting rod 13. The first end and the second end of the connecting rod 13 may be provided with another hinge shaft 15, when the squeezing handle 12 moves up and down, the connecting rod 13 can adjust the angle, and at the same time, the pressing block 8 can be kept moving up and down in the vertical direction under the cooperation of the guide hole 10 and the positioning column 4, thereby ensuring that the positions of the sharp structure 5 and the bracket 18 correspond accurately.

[0040] In one embodiment, the main working process of the present invention is:

[0041] Step 1: Lift the squeezing handle 12 to separate the pressing block 8 and the supporting plate 3 and open them to a certain height;

[0042] Step 2: Place the support 18 (assembly of the product to be baked) with the filter 19 bonded thereto, and place the carrier plate 17 together with the carrier film 16 and the support 18 on the support plate 3 through the first positioning structure (e.g., positioning hole 22) and the second positioning structure (e.g., positioning column 4) so ​​that Figure 3 The bottom of each filter 19 shown corresponds to the sharp structure 5 one by one, ensuring the accurate position of the opening 21 and preventing the opening 21 from deviating from the position of the bracket 18 and failing to escape the gas;

[0043] Step 3: Press down the squeezing handle 12 to make the sharp structure 5 pierce the carrier film 16. Pay attention to the pressing height, and do not let the sharp structure 5 break the filter 19.

[0044] Step 4: Lift the squeeze handle 12 and remove the Figure 3 The overall structure shown in FIG. 1 separates the sharp structure 5 from the carrier film 16 to form an opening 21 (such as Figure 4 shown);

[0045] Step 5: Figure 4 The overall structure shown is placed in an oven for baking, thereby completing the processing and manufacturing of the filter 19.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tooling fixture for filter assembly, characterized in that: include: A carrier plate, wherein the carrier plate is provided with a product through hole and a first positioning structure, a carrier film is located below the product through hole and covers the product through hole, the carrier film is used to connect a bracket with a filter attached thereto, the bracket is located in the product through hole; the bracket has no air escape hole structure; the filter is bonded above the bracket, the bottom end opening of the bracket is connected to the carrier film, and the bracket and the carrier film enclose a cavity; A support plate, the support plate is used to be placed on a side of the carrier film away from the carrier plate, the support plate is provided with a sharp structure and a second positioning structure, the tip of the sharp structure corresponds to the bracket, and the second positioning structure is used to cooperate with the first positioning structure; the height of the cavity is from the bottom of the filter to the bottom of the bracket, and the height of the sharp structure is less than the height of the cavity; And a pressing block, the pressing block is provided with an abutment structure, the abutment structure is used to abut the supporting plate or penetrate into the product through hole to abut the supporting film; the bracket is located in the middle of the product through hole, and there is an annular gap between the bracket and the inner wall of the product through hole, and the abutment structure is used to penetrate the annular gap.

2. The tooling fixture for filter assembly according to claim 1, characterized in that: A top slot is arranged in the middle of the abutting structure, the width of the top slot is greater than the width of the bracket, and the depth of the top slot is greater than the height of the bracket.

3. The tooling fixture for filter assembly according to claim 1, characterized in that: The spacing between the abutment structures is greater than or equal to the width of the product through hole, and the sum of the height of the abutment structure and the thickness of the supporting plate is greater than the height of the bracket.

4. The filter assembly tool according to claim 1, characterized in that: The first positioning structure adopts a positioning hole, and the second positioning structure adopts a positioning column.

5. The tooling fixture for filter assembly according to claim 4, characterized in that: The pressing block is provided with a guide hole, the position and size of the guide hole are matched with the positioning column, and the depth of the guide hole is greater than the height of the positioning column exposed from the carrying plate.

6. The tooling fixture for filter assembly according to any one of claims 1 to 5, characterized in that: It also includes a pressing assembly, which is used to provide pressure for pressing the pressing block downward.

7. The tooling fixture for filter assembly according to claim 6, characterized in that: The pressing assembly includes a base, a fixed column and a squeezing handle, the fixed column is vertically installed on the base, the support plate is horizontally installed on the base or on the fixed column, the first end of the squeezing handle is hingedly connected to the fixed column, the second end of the squeezing handle is a gripping end, and the middle part of the squeezing handle is used to connect the pressing block.

8. The tooling fixture for filter assembly according to claim 7, characterized in that: It also includes a connecting rod, a first end of which is hingedly connected to the squeezing handle, and a second end of which is hingedly connected to the pressing block.

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