Electroplating clamp, electroplating equipment, photovoltaic cell manufacturing equipment and electroplating method

Abstract

The invention relates to an electroplating clamp, electroplating equipment, photovoltaic cell manufacturing equipment and an electroplating method.The electroplating clamp comprises a fixing frame used for installing a product to be electroplated and a clamping frame detachably and fixedly arranged on at least one side of the two different sides of the fixing frame in the thickness direction; the conductive frame is clamped between the clamping frame and the fixed frame; the fixing frame is provided with a first opening, the conductive frame is provided with a second opening, the clamping frame is provided with a third opening, and orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixing frame are at least partially overlapped; the fixing frame is an insulator, the clamping frame is an insulator, the conductive frame is a conductor, and a conductive abutting piece is arranged on the conductive frame. And the conductive frame is connected with an external conductive device or a power supply device through the wire, so that the installation is relatively simple and convenient.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic cell and semiconductor manufacturing, and in particular to an electroplating fixture, electroplating equipment, photovoltaic cell manufacturing equipment and an electroplating method. Background Art

[0002] In recent years, the metal electrodes of photovoltaic cells made by electroplating have been used in the mass production of photovoltaic cells. At present, most of the photovoltaic cells are electroplated by the hanging plating process, that is, the photovoltaic cells are installed on the fixture, and the fixture is connected to the negative pole of the power supply, and the fixture and the cell are immersed in the electroplating tank to realize the electroplating process.

[0003] In the existing clamps, the conductive clamps are rotatably connected to the frame of the clamps through a rotating shaft. After the conductive clamps are rotated and opened, the battery cell is placed on the frame, and then the conductive clamps are rotated and pressed on the battery cell, so that the conductive clamping points of the conductive clamps are in contact with the battery cell. This has the following problems: first, the operator needs to manually drive the rotating shafts of each conductive clamp to rotate for installation, which is inefficient; second, since the clamping force at each conductive clamping point cannot be adjusted, the contact between the conductive clamping point of the conductive clamp and the battery cell cannot be guaranteed to be reliable during the entire electroplating process; third, the resistance from each conductive clamping point to the power-on point at the top of the clamp cannot be well uniform, which affects the quality of electroplating processing.

[0004] It should be stated that the above background technology content is only used to assist in understanding the inventive concept and technical solution of this patent application. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the invention

[0005] A first aspect of the present invention is to provide a new electroplating fixture to solve one or more problems of the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a plating fixture, comprising a fixed frame for mounting a product to be electroplated, a clamping frame detachably fixed on at least one of two different sides of the fixed frame in the thickness direction, and a conductive frame clamped between the clamping frame and the fixed frame; a first opening is provided on the fixed frame, a second opening is provided on the conductive frame, and a third opening is provided on the clamping frame, and the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixed frame at least partially overlap; the fixed frame is an insulator, the clamping frame is an insulator, the conductive frame is a conductor, and a conductive pressing piece is provided on the conductive frame.

[0007] Preferably, the electroplating fixture includes a disassembled state and an assembled state. In the disassembled state, the conductive frame and the clamping frame are separated, and the clamping frame and the fixed frame are separated; in the assembled state, the conductive frame is detachably fixedly connected to the clamping frame, and the clamping frame is detachably fixedly connected to the fixed frame.

[0008] Preferably, a supporting platform is provided on the side wall of the first opening; during electroplating, the edge of the first surface of the product to be electroplated overlaps the supporting platform, and the conductive pressing member at least presses on the area to be electroplated on the second surface of the product to be electroplated, wherein the first surface and the second surface are two opposite surfaces of the product to be electroplated.

[0009] Preferably, the conductive frame comprises a frame body, a plurality of second openings penetrating along the thickness direction are formed on the frame body, each of the second openings has two side portions arranged opposite to each other, at least one of the side portions is fixedly provided with the conductive pressing member, each of the conductive pressing members comprises a connecting portion, a plurality of pressing portions arranged on the connecting portion and having a pressing end, the connecting portion extends along the length direction of the side portion, a plurality of pressing portions located on the same side portion are distributed at intervals along the length extension direction of the side portion, and the pressing end cantilevers in the second opening, wherein the frame body and the conductive pressing member are both conductors, the connecting portion is fixedly connected to the frame body and is conductively connected to the frame body.

[0010] In some embodiments, two of the pressing ends are provided on the side portion between any two adjacent second openings distributed along a direction perpendicular to the length extension of the side portion, and the two pressing ends are respectively cantilevered in the two second openings.

[0011] In some embodiments, in the conductive pressing member, each of the pressing portions includes an extension section and a clamping section bent and extended from one end of the extension section, wherein the extension direction of the extension section is perpendicular to the length extension direction of the connecting portion, the clamping section extends along the thickness direction of the frame, and the pressing end is arranged on one end of the clamping section away from the extension section.

[0012] In some embodiments, the frame includes a plurality of horizontal plates extending along a first direction and a plurality of vertical plates extending along a second direction, the first direction and the second direction are perpendicular to each other, all of the horizontal plates are spaced apart along the second direction, all of the vertical plates are spaced apart along the first direction, a second opening is formed between two adjacent horizontal plates and two adjacent vertical plates, the conductive pressure piece is fixedly provided on each of the vertical plates, and the connecting portion of the conductive pressure piece extends along the second direction.

[0013] In some embodiments, an anti-plating coating is provided on the frame.

[0014] Preferably, when the two clamping frames are detachably fixed on different sides of the fixed frame in the thickness direction, the conductive frame is clamped between each clamping frame and the fixed frame; during electroplating, the conductive pressing members on the two conductive frames can clamp the two side surfaces of the product to be electroplated placed in the first opening in the thickness direction, and the orthographic projections of the conductive pressing members on the two conductive frames on the surface of the product to be electroplated completely overlap or partially overlap.

[0015] Preferably, a plurality of adjustment components are provided on the clamping frame, each of the adjustment components comprises a pushing member capable of adjusting a position along a thickness direction of the clamping frame, and the pushing member abuts against the pressing portion.

[0016] In some embodiments, the adjustment assembly also includes a sleeve, which extends along the thickness direction of the clamping frame, and the sleeve has a hollow cavity. The push member is arranged in the hollow cavity along its own axial sliding fit, and the push member has at least a contact end located outside the hollow cavity and used to abut against the pressing portion. The adjustment assembly also includes an elastic member that provides the force required for the push member to move toward the pressing portion, and an adjustment member for adjusting the position of the sleeve on the clamping frame.

[0017] In some embodiments, the adjustment component adopts any one of the following structures or a combination of any two structures:

[0018] (1) A limiting member is fixedly provided on the sleeve, the elastic member is a spring, the spring is located in the hollow cavity, and the spring abuts between the limiting member and the pushing member;

[0019] (2) The number of the adjustment components and the pressing parts is the same and their positions correspond one to one;

[0020] (3) The adjusting member is an adjusting nut, an external thread is provided on the outer circumference of the sleeve, the adjusting nut is sleeved on the outer circumference of the sleeve and is threadedly connected to the sleeve, wherein the adjusting nut can be rotatably arranged on the clamping frame around its own axis.

[0021] In some embodiments, a positioning structure is further provided between the clamping frame and the fixing frame; and / or a locking structure for locking the fixing frame and the clamping frame to each other is further provided between the fixing frame and the clamping frame.

[0022] In some embodiments, a buckle assembly is further provided between the clamping frame and the fixed frame, and the buckle assembly includes a buckle part and a mating part that can be connected with each other, and the buckle part and the mating part are respectively provided on the clamping frame and the fixed frame. When the buckle part and the mating part are connected with each other, there is a gap between the fixed frame and the clamping frame along the thickness direction.

[0023] In some embodiments, one end of the fastener is rotatably connected to one of the fixed frame and the clamping frame, the other end of the fastener has a slot, and the mating piece is arranged on the other of the fixed frame and the clamping frame, and the slot can be matingly engaged with the mating piece, so that the fastener is matingly connected with the mating piece.

[0024] In some embodiments, the fixed frame is provided with a relief structure for accommodating the conductive pressing member. Specifically, the relief structure includes a plurality of relief grooves, which penetrate along the thickness direction of the fixed frame, and when the electroplating fixture is taken out of the electroplating solution, the relief grooves form guide grooves for allowing the electroplating solution to flow out; and / or, the conductive pressing member is fixedly connected to the conductive frame by a fastening screw, and the relief structure includes a mounting groove for accommodating the head of the fastening screw.

[0025] A second aspect of the present invention is to provide an electroplating device, which includes the electroplating jig as described above.

[0026] A third aspect of the present invention provides a photovoltaic cell manufacturing device, including an electroplating device, wherein the electroplating device also includes the electroplating fixture as described above.

[0027] A fourth aspect of the present invention provides an electroplating method, comprising the following steps:

[0028] Mounting the product to be electroplated on a fixing frame having a first opening, so that the edge of the first surface of the product to be electroplated overlaps the edge of the first opening, and the area to be electroplated on the product to be electroplated is exposed from the first opening;

[0029] A conductive frame having a second opening and a clamping frame having a third opening are fixedly connected to form a conductive clamping assembly, so that the orthographic projection of the second opening on the third opening completely overlaps or partially overlaps, and a conductive pressing member cantilevered into the second opening is provided at the edge of the second opening;

[0030] The conductive clamping assembly is fixedly connected to the fixed frame containing the product to be electroplated from the second surface direction of the product to be electroplated to form an electroplating fixture containing the product to be electroplated, so that the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixed frame at least partially overlap, so that the free end of the conductive pressing member presses against the area to be electroplated on the second surface of the product to be electroplated; or, the two conductive clamping assemblies are respectively fixedly connected to the fixed frame containing the product to be electroplated from the two surface directions of the product to be electroplated to form an electroplating fixture containing the product to be electroplated, so that the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixed frame at least partially overlap, so that the free ends of the conductive pressing members on the two conductive clamping assemblies are respectively pressed against the areas to be electroplated on both sides of the product to be electroplated;

[0031] placing the electroplating fixture carrying the product to be electroplated into an electroplating tank;

[0032] Energizing the anode in the electroplating tank and the conductive frame to electroplate the product to be electroplated;

[0033] The first surface and the second surface are two opposite surfaces of the product to be electroplated, the fixing frame is an insulator, the clamping frame is an insulator, and the conductive frame is a conductor.

[0034] Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the electroplating fixture provided by the embodiment of the present invention, in which a conductive frame is provided, and the conductive frame is clamped between the clamping frame and the fixed frame, so that the conductive pressing piece on the conductive frame is pressed against the area to be electroplated of the product to be electroplated, and the conductive frame is connected to an external conductive device or a power supply device through a wire, and the installation is relatively simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Attached Figure 1 It is a schematic diagram of the overall structure of an electroplating fixture according to a specific embodiment of the present invention;

[0036] Attached Figure 2 For attachment Figure 1 Schematic diagram of the structural decomposition of the electroplating fixture;

[0037] Attached Figure 3 For attachment Figure 1 Schematic diagram of the overall structure of the conductive frame in the electroplating fixture;

[0038] Attached Figure 4 For attachment Figure 3 A magnified schematic diagram of the middle part;

[0039] Attached Figure 5 For attachment Figure 1A schematic diagram of the structural breakdown of the adjustment components in the electroplating fixture;

[0040] Attached Figure 6 For attachment Figure 1 A front view of the adjustment assembly in the electroplating fixture;

[0041] Attached Figure 7 For the attachment Figure 6 Schematic diagram of the three-dimensional structure viewed from the middle BB direction;

[0042] Attached Figure 8 For attachment Figure 1 Schematic diagram of the clamping position of the electroplating fixture when clamping the battery cell;

[0043] Attached Fig. 9 For attachment Figure 1 A schematic diagram of the front view structure of a fixed frame in an electroplating fixture;

[0044] Attached Fig.10 For the attachment Fig. 9 Schematic diagram of the cross-sectional structure in CC direction;

[0045] Attached Fig.11 For attachment Fig.10 The enlarged schematic diagram of the middle E part;

[0046] Attached Fig.12 For the attachment Fig. 9 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0047] Attached Fig.13 For attachment Fig.12 Enlarged schematic diagram of the middle F part;

[0048] Attached Fig.14 For attachment Figure 1 A schematic diagram of the three-dimensional structure of a fixing frame in an electroplating fixture;

[0049] Attached Fig.15 For attachment Fig.14 Enlarged schematic diagram of the middle G section;

[0050] Attached Fig.16 For attachment Figure 1 A schematic diagram of the front view structure of the electroplating fixture;

[0051] Attached Fig.17 For the attachment Fig.16 Schematic diagram of the cross-sectional structure in the middle HH direction;

[0052] Attached Fig.18 For the attachment Fig.16 Schematic diagram of the cross-sectional structure in the middle II direction;

[0053] Attached Fig.19 For attachment Figure 1 Enlarged schematic diagram of the middle P part;

[0054] Attached Fig. 20 It is a schematic diagram of the overall structure of an electroplating fixture according to another embodiment of the present invention;

[0055] Wherein: 1. fixed frame; 10. first opening; 11. positioning pin; 12. buckle; 121. card slot; 13. rotating shaft; 14. mounting slot; 15. avoidance slot; 16. supporting platform;

[0056] 2. conductive frame; 20. second opening;

[0057] 21, frame; 21a, horizontal plate; 21b, vertical plate; 22, conductive pressing member; 221, connecting portion; 222, pressing portion; 222a, extension section; 222b, clamping section; 222c, pressing end;

[0058] 3. Clamping frame; 30. Third opening; 31. Handle; 32. Matching piece;

[0059] 4. Locking parts;

[0060] 5. Adjustment assembly; 51. Pushing member; 51a. Sliding portion; 51b. Abutment end; 51c. Position limiting portion; 52. Sleeve; 53. Elastic member; 54. Position limiting member; 55. Adjustment member; 6. Conductive plate; 7. Wire; 8. Fastening screw; 81. Head;

[0061] 100. Products to be electroplated. DETAILED DESCRIPTION

[0062] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0063] Example 1

[0064] See also Figure 1 to Figure 2 The electroplating fixture shown is used to clamp and fix the product 100 to be electroplated, and place it in the electroplating solution for electroplating in a rack plating manner. The product 100 to be electroplated can be a photovoltaic cell.

[0065] See also Figure 1 , Figure 2As shown, the electroplating fixture includes a fixed frame 1 for mounting a product 100 to be electroplated, two clamping frames 3 detachably fixed on two sides of the fixed frame 1 in different thickness directions, and a conductive frame 2 clamped between the clamping frame 3 and the fixed frame 1, wherein a first opening 10 is provided on the fixed frame 1, a second opening 20 is provided on the conductive frame 2, and a third opening 30 is provided on the clamping frame 3, and the orthographic projections of the first opening 10, the second opening 20, and the third opening 30 in the thickness direction of the fixed frame 1 at least partially overlap, wherein the fixed frame 1 is an insulator, the clamping frame 3 is also an insulator, the conductive frame 2 is a conductor, and a conductive pressing member 22 is provided on the conductive frame 2.

[0066] The electroplating fixture has a disassembled state and Figure 1 In the assembly state shown, in the disassembled state, the conductive frame 2 is separated from the clamping frame 3, and the clamping frame 3 is separated from the fixed frame 1; in the assembled state, the conductive frame 2 is detachably fixedly connected to the clamping frame 3, and the clamping frame 3 is detachably fixedly connected to the fixed frame 1. During electroplating, the product 100 to be electroplated is arranged on the fixed frame 1 and located in the first opening 10, and the conductive pressing members 22 of the two sets of conductive frames 2 respectively clamp and conductively connect the product 100 to be electroplated in the thickness direction of the product 100 to be electroplated, so as to perform electroplating processing on the two surfaces of the product 100 to be electroplated in the thickness direction.

[0067] See also Figure 2 As shown, a supporting platform 16 is provided on the side wall of the first opening 10. During electroplating, the edge of the first surface of the product 100 to be electroplated overlaps the supporting platform 16, and the conductive pressing member 22 on the conductive frame 2 on one side presses on the area to be electroplated on the first surface of the product 100 to be electroplated, and the conductive pressing member 22 on the conductive frame 2 on the other side presses on the area to be electroplated on the second surface of the product 100 to be electroplated. The first surface and the second surface of the product 100 to be electroplated are electroplated respectively, wherein the first surface and the second surface are two opposite surfaces of the product 100 to be electroplated.

[0068] In this embodiment, see Figures 1 to 4As shown, the conductive frame 2 also includes a frame body 21, and a conductive pressing member 22 is arranged on the frame body 21, and the frame body 21 and the conductive pressing member 22 are both conductors. The frame body 21 is provided with a plurality of second openings 20 penetrating along the thickness direction, and each second opening 20 has two side portions arranged opposite to each other, and a conductive pressing member 22 is fixedly arranged on each side portion. For example, the product 100 to be electroplated is rectangular, and the second opening 20 is also rectangular. The above-mentioned two side portions are the side portions where the two long sides of the rectangle in the second opening 20 are located, so that the two conductive pressing members 22 can respectively form a clamping of the product 100 to be electroplated on the two long sides of the product 100 to be electroplated. In other embodiments, the product 100 to be electroplated can also be a square or other polygon, and the second opening 20 is correspondingly also a square or other polygon.

[0069] Each conductive pressing member 22 includes a connecting portion 221 and a plurality of pressing portions 222 disposed on the connecting portion 221 and having pressing ends 222c. The connecting portion 221 extends along the length direction of the side portion, and all the pressing portions 222 are distributed at intervals along the length extension direction of the connecting portion 221. The frame 21 and the conductive pressing member 22 are each made of a conductive material, and the connecting portion 221 is fixedly connected to the frame 21 and is conductively connected to the frame 211. The frame 21 is also provided with an anti-plating coating, which can be made of Teflon material.

[0070] In the conductive frame 21, all the conductive pressing members 22 are fixed on the same side in the thickness direction of the frame 21, and all the pressing ends 222c of the two conductive pressing members 22 fixed on the two opposite side portions of the same second opening 20 are cantilevered in the second opening 20. Specifically, in any conductive pressing member 22, each pressing portion 222 includes an extension section 222a, and a clamping section 222b extending from one end of the extension section 222a, the extension direction of the extension section 222a is perpendicular to the length extension direction of the connecting portion 221, the clamping section 222b extends along the thickness direction of the frame 21, and extends in a direction away from the frame 21; the pressing end 222c is arranged on the end of the clamping section 222b away from the extension section 222a, and the pressing end 222c is specifically a pointed end, which contacts the surface of the product 100 to be electroplated, thereby forming a clamping and conductive connection with the product 100 to be electroplated.

[0071] In this embodiment, the connecting portion 221 is plate-shaped, and the connecting portion 221 has the same thickness as the extension section 212a, and is made of the same elastic metal material. The frame 21 includes a plurality of transverse plates 21a extending along a first direction, and a plurality of vertical plates 21b extending along a second direction, all of the transverse plates 21a are spaced apart along the second direction, and all of the vertical plates 21b are spaced apart along the first direction, and the first direction and the second direction are perpendicular to each other. A second opening 20 is formed between two adjacent transverse plates 21a and two adjacent vertical plates 21b, and a conductive pressing member 22 is fixed on each vertical plate 21b, and the two conductive pressing members 22 on both sides of the second opening 20 form a clamp for the product 100 to be electroplated in the second opening 20.

[0072] In this embodiment, along any two adjacent second openings 20 distributed in a direction perpendicular to the length extension direction of the side portion, two pressing ends 222c are provided on the side portion located between the two second openings 20, and the two pressing ends 222c are respectively suspended in the two second openings 20. That is to say, along the first direction, in the conductive pressing members 22 located on the two outermost vertical plates 21b, only one side of the connecting portion 221 is provided with a pressing portion 222 with a pressing end 222c; in the conductive pressing members 22 provided on the other vertical plates 21b, both sides of the connecting portion 221 are provided with a pressing portion 222 with a pressing end 222c, so as to respectively be suspended in the second openings 20 on both sides.

[0073] In the conductive frame 2, the frame body 21 and the conductive pressing member 22 are made of different materials, and the thickness of the frame body 21 is greater than the thickness of the connecting portion 221. In a preferred embodiment, the frame body 21 is made of a stainless steel plate, and the conductive pressing member 22 is made of other elastic metal materials. The connecting portion 221 of the conductive pressing member 22 is fixed to the frame body 21 by ultrasonic welding and forms a conductive connection with the frame body 21. The conductive frame 2 as a whole is fixedly connected to one side of the clamping frame 3 in the thickness direction in a detachable manner. In this embodiment, the conductive frame 2 is fixedly connected to the clamping frame 3 by a plurality of fastening screws 8. In this way, the overall rigidity of the conductive frame 2 can be ensured, so that the connection between it and the fixed frame 1 is stable and reliable, the deformation of the conductive pressing member 22 after the overall welding can be guaranteed, and it is also conducive to determining the position of the pressing end 222c of each conductive pressing member 22.

[0074] When the electroplating fixture is in an assembled state, the conductive frame 2 is fixedly connected to the clamping frame 3, wherein the clamping section 222b of the conductive pressing member 22 extends away from the clamping frame 3. Figure 1 , Figure 2 and Figure 8As shown, when the two clamping frames 3 are detachably fixed on different sides of the fixed frame 1 in the thickness direction, a conductive frame 2 is provided between each clamping frame 3 and the fixed frame 1; during electroplating, the conductive pressing members 22 on the two conductive frames 2 can clamp the two side surfaces in the thickness direction of the product to be electroplated 100 placed in the first opening 10, and the positive projections of the conductive pressing members 22 on the two conductive frames 2 on the surface of the product to be electroplated 100 completely overlap or partially overlap, that is, the positions of the clamping points formed by the pressing ends 222c on the two side surfaces of the product to be electroplated 100 correspond one to one.

[0075] See also Figure 1 to Figure 2 As shown, a conductive plate 6 is also provided on the fixed frame 1, and the conductive frames 2 on both sides are connected to the conductive plate 6 through wires 7 to achieve conductive connection, and the conductive plate 6 is conductively connected to the external power supply device. In this way, each pressing portion 222 is connected to the conductive plate 6 through the above-mentioned wires 7, which can make the resistance of each pressing portion 222 from the clamping point on the product 100 to be electroplated to the external power supply uniform, which is conducive to ensuring the uniformity of the electroplating quality on the product 100 to be electroplated and improving the electroplating quality.

[0076] As shown in the accompanying drawings, each clamping frame 3 is provided with a plurality of adjustment components 5, and each adjustment component 5 includes a pushing member 51 capable of adjusting the position along the thickness direction of the clamping frame 3, and the pushing member 51 abuts against the pressing portion 222, and is used to push the pressing portion 222 toward the product 100 to be electroplated so that the pressing portion 222 is pressed onto the product 100 to be electroplated.

[0077] Specifically, see Figures 5 to 8 As shown, the adjustment assembly 5 further includes a sleeve 52, which extends in the thickness direction of the clamping frame 3, and has a hollow cavity. The push member 51 can be slidably arranged in the hollow cavity of the sleeve 52 along its own axial direction; the push member 51 has a contact end 51b, which extends out of the hollow cavity and is used to abut against the pressing portion 222. The adjustment assembly 5 further includes an elastic member 53 that provides the force required for the push member 51 to move toward the pressing portion 222, and an adjustment member 55 for adjusting the position of the sleeve 52 on the clamping frame 3.

[0078] In this embodiment, the hollow cavity of the sleeve 52 penetrates axially, and the pushing member 51 has a columnar sliding portion 51a, a limiting portion 51c located at one end of the sliding portion 51a, and a contact end 51b located at the other end of the sliding portion 51a. The outer diameter of the limiting portion 51c is larger than the outer diameter of the sliding portion 51a, and the contact end 51b is conical; the pushing member 51 is slidably arranged in the hollow cavity, part of the sliding portion 51a and the contact end 51b extend out of the hollow cavity, and the other part of the sliding portion 51a and the limiting portion 51c are located in the hollow cavity, and a limiting surface for limiting the limiting portion 51c from sliding out is also formed in the hollow cavity. The sleeve 52 is also fixedly provided with a limiting member 54, which is a compression screw fixed in the hollow cavity. The elastic member 53 is a spring, which is arranged in the hollow cavity, one end of which abuts against the limiting portion 51c of the push member 51, and the other end of which abuts against the limiting member 54. Under the action of the elastic member 53, the end of the push member 51 where the abutting end 51b is located protrudes out of the hollow cavity.

[0079] Here, the adjusting part 55 is specifically an adjusting nut, and an external thread is provided on the outer periphery of the sleeve 52. The adjusting nut is sleeved on the outer periphery of the sleeve 52 and is threadedly connected with the sleeve 52. The adjusting nut can be rotatably set on the frame 22 around its own axis, but cannot move relative to the clamping frame 3 along the thickness direction of the clamping frame 3. In this way, when the contact end 51b is against the pressing portion 222, it is only necessary to drive the adjusting nut to rotate around its own axis to drive the sleeve 52 to move toward the pressing portion 222 or away from the pressing portion 222, so that the spring is squeezed and the pressing force of the pushing member 51 on the pressing portion 222 increases, or the spring is released and the pressing force of the pushing member 51 on the pressing portion 222 decreases, thereby adjusting the pressing force of the pressing portion 222 pressing the product 100 to be electroplated, avoiding the pressing end 222c not pressing against the product 100 to be electroplated and forming a floating contact, or the pressing end 222c pressing against the product 100 to be electroplated with a large pressure and forming an over-pressure contact.

[0080] In this embodiment, the number of adjustment components 5 and the pressing parts 222 are the same and their positions correspond one to one, that is, an adjustment component 5 is provided at each pressing part 222, so that the clamping force of the conductive pressing member 22 at each clamping point position on the product 100 to be electroplated can be adjusted.

[0081] See also Figure 1 to Figure 2As shown, a positioning structure is also provided between the clamping frame 3 and the fixed frame 1, and a locking structure for locking the two clamping frames 3 to each other is also provided between the fixed frame 1 and the two clamping frames 3. Specifically, in the present embodiment, the positioning structure includes a plurality of positioning pins 11 provided on the two side surfaces in the thickness direction of the fixed frame 1, and each clamping frame 3 is provided with a plurality of positioning holes corresponding to the positioning pins 11. During installation, the positioning holes are correspondingly inserted into the corresponding positioning pins 11 to achieve positioning between the clamping frame 3 and the fixed frame 1. The locking structure includes a plurality of locking members 4, which are provided on the clamping frame 3 and are used to lock the corresponding clamping frame 3 on the fixed frame 1. The locking members 4 here adopt a rotary quick lock structure. The specific structure of the locking members 4 is not the focus of the present invention and will not be described in detail here. Specifically, the locking members 4 in the prior art can be used.

[0082] See also Figure 1 , Figure 2 As shown, on the electroplating fixture, handles 31 are provided on both sides of one of the clamping frames 3 to facilitate lifting the clamping frame 3, or to lift the entire fixture when the clamping frame 3 is locked on the fixed frame 1.

[0083] See also Figure 1 , Figure 2 and Fig.19 As shown, a buckle assembly is further provided between one of the clamping frames 3 and the fixed frame 1, and the buckle assembly includes a buckle 12 and a matching piece 32 that can be matched and connected with each other. In this embodiment, the buckle assembly is provided with two groups, and the two buckle 12 are respectively provided on the two opposite side portions of the fixed frame 1, and the two matching pieces 32 are respectively provided on the two side portions of the clamping frame 3. Here, one end of the buckle 12 is rotatably connected to the fixed frame 1 through a rotating shaft 13 provided on the fixed frame 1, and a clamping groove 121 is provided on the other end of the buckle 12, and the matching piece 32 is specifically columnar, and the buckle 121 can be matched and buckled on the matching piece 32. When the buckle 121 on the buckle 12 is matched and buckled on the matching piece 32, a gap is formed between the fixed frame 1 and the clamping frame 3 in the thickness direction, so as to facilitate the cleaning of the electroplating fixture. When the fastener 12 and the fitting 32 are separated from each other, the clamping frame 3 can be locked relative to the fixing frame 1 , so that the conductive frame 2 is clamped between the clamping frame 3 and the fixing frame 1 for electroplating processing.

[0084] In other embodiments, the fastener 12 may be disposed on the clamping frame 3 and the mating member 32 may be disposed on the fixed frame 1. The fastener 12 and the mating member 32 may also adopt other structural forms. It is only necessary that when the two are connected with each other, the fixed frame 1 and the clamping frame 3 can be stretched apart in the thickness direction so that a certain gap is formed between the two.

[0085] See also Figures 12 to 18As shown, the fixing frame 1 is also provided with an avoidance structure for accommodating the conductive pressing member 22, and the avoidance structure includes a plurality of avoidance grooves 15 and a mounting groove 14, wherein the mounting groove 14 is used to accommodate the head 81 of the fastening screw 8, so that after the conductive frame 2 is fixed to the clamping frame 3 by the fastening screw 8, the head 81 of the fastening screw 8 will not cause a gap between the fixing frame 1 and the conductive frame 2. The mounting groove 14 specifically extends along the second direction of the conductive frame 2, so that the heads 81 of all the fastening screws 8 that are installed and fixed with the same conductive pressing member 22 are accommodated in the same mounting groove 14. The number of the avoidance grooves 15 is the same as the number of the pressing portions 222 on the conductive pressing member 22, and each avoidance groove 15 penetrates along the thickness direction of the fixing frame 1. When the electroplating fixture is taken out of the electroplating solution, these avoidance grooves 15 can form a guide groove for the electroplating solution to flow out, thereby preventing the electroplating solution from forming liquid accumulation in the electroplating fixture.

[0086] When the electroplating fixture is used for electroplating, the following steps can be followed:

[0087] The product to be plated 100 is mounted in the first opening 10 of the fixing frame 1, so that the edge of the first surface of the product to be plated 100 overlaps the edge of the first opening 10 and is supported on the supporting platform 16, and the area to be plated on the product to be plated 100 is exposed from the first opening 10;

[0088] The conductive frame 2 is fixedly connected to the clamping frame 3 to form a conductive clamping assembly, and during installation, the orthographic projection of the second opening 20 of the conductive frame 2 and the third opening 30 of the clamping frame 3 on the third opening 30 completely overlaps or partially overlaps;

[0089] The two conductive clamping assemblies assembled as described above are respectively fixedly connected to the fixing frame 1 on which the product 100 to be electroplated is mounted from the two sides of the product 100 to be electroplated, so as to form a plating fixture carrying the product 100 to be electroplated, so that the orthographic projections of the first opening 10, the second opening 20 and the third opening 30 in the thickness direction of the fixing frame 1 at least partially overlap, so that the free ends (i.e., the pressing ends 222c) of the conductive pressing members 22 on the two conductive clamping assemblies are respectively pressed against the areas to be electroplated on the two sides of the product 100 to be electroplated;

[0090] Place the electroplating fixture carrying the product 100 to be electroplated into the electroplating tank;

[0091] The anodes and the conductive frame 2 in the electroplating tank are energized to electroplate the product 100 to be electroplated.

[0092] Example 2

[0093] like Fig. 20As shown, the difference between the electroplating fixture of this embodiment and the embodiment 1 is mainly that in the electroplating fixture of this embodiment, a clamping frame 3 and a conductive frame 2 are provided on one side of the fixed frame 1, and the conductive pressing member 22 of the conductive frame 2 on the side forms a clamping and conductive connection for the product 100 to be electroplated on the side surface in the thickness direction of the product 100 to be electroplated, and only the side surface is electroplated during electroplating. Specifically, the edge of the first surface of the product 100 to be electroplated overlaps the support platform 16, and the conductive pressing member 22 on the conductive frame 2 presses on the area to be electroplated on the second surface of the product 100 to be electroplated, so as to electroplating the second surface.

[0094] When the electroplating fixture is used for electroplating, the following steps can be followed:

[0095] The product to be plated 100 is mounted in the first opening 10 of the fixing frame 1, so that the edge of the first surface of the product to be plated 100 overlaps the edge of the first opening 10 and is supported on the supporting platform 16, and the area to be plated on the product to be plated 100 is exposed from the first opening 10;

[0096] The conductive frame 2 is fixedly connected to the clamping frame 3 to form a conductive clamping assembly, and during installation, the orthographic projection of the second opening 20 of the conductive frame 2 and the third opening 30 of the clamping frame 3 on the third opening 30 completely overlaps or partially overlaps;

[0097] The above-mentioned conductive clamping assembly formed by the installation is fixedly connected to the fixing frame 1 on which the product 100 to be electroplated is mounted from the second surface direction of the product 100 to be electroplated, so as to form a plating fixture carrying the product 100 to be electroplated, so that the orthographic projections of the first opening 10, the second opening 20 and the third opening 30 in the thickness direction of the fixing frame 1 at least partially overlap, so that the free end (i.e., the pressing end 222c) of the conductive pressing member 22 on the above-mentioned conductive clamping assembly presses against the area to be electroplated on the second surface of the product 100 to be electroplated;

[0098] Place the electroplating fixture carrying the product 100 to be electroplated into the electroplating tank;

[0099] The anodes and the conductive frame 2 in the electroplating tank are energized to electroplate the product 100 to be electroplated.

[0100] Example 3

[0101] Not shown in the figure, an electroplating equipment, the main improvement of which lies in the electroplating fixture, wherein the electroplating fixture is as described in Example 1 and Example 2.

[0102] Example 4

[0103] Not shown in the figure, a photovoltaic cell manufacturing device includes an electroplating device for electroplating one side surface or both sides surface of the cell, wherein the main improvement lies in the electroplating fixture, wherein the electroplating fixture is as described in Example 1 and Example 2.

[0104] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An electroplating fixture, characterized in that: It includes a fixing frame for mounting the product to be electroplated, a clamping frame detachably fixed on at least one of two sides of the fixing frame in different thickness directions, and a conductive frame clamped between the clamping frame and the fixing frame; The fixing frame is provided with a first opening, the conductive frame is provided with a second opening, and the clamping frame is provided with a third opening, and the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixing frame at least partially overlap; The fixing frame is an insulator, the clamping frame is an insulator, the conductive frame is a conductor, and a conductive pressing piece is arranged on the conductive frame.

2. The electroplating fixture according to claim 1, characterized in that: The electroplating fixture includes a disassembled state and an assembled state. In the disassembled state, the conductive frame and the clamping frame are separated, and the clamping frame and the fixed frame are separated; in the assembled state, the conductive frame is detachably fixedly connected to the clamping frame, and the clamping frame is detachably fixedly connected to the fixed frame.

3. The electroplating fixture according to claim 1, characterized in that: A supporting platform is arranged on the side wall of the first opening; during electroplating, the edge of the first surface of the product to be electroplated overlaps the supporting platform, and the conductive pressing member at least presses on the area to be electroplated on the second surface of the product to be electroplated, wherein the first surface and the second surface are two opposite surfaces of the product to be electroplated.

4. The electroplating fixture according to claim 1, characterized in that: The conductive frame includes a frame body, and a plurality of second openings penetrating along the thickness direction are opened on the frame body, each of the second openings has two side portions arranged opposite to each other, and at least one of the side portions is fixedly provided with the conductive pressing member, and each of the conductive pressing members includes a connecting portion, and a plurality of pressing portions arranged on the connecting portion and having pressing ends, the connecting portion extends along the length direction of the side portion, and the plurality of pressing portions located on the same side portion are distributed at intervals along the length extension direction of the side portion, and the pressing ends are cantilevered in the second openings, wherein the frame body and the conductive pressing member are both conductors, and the connecting portion is fixedly connected to the frame body and is conductively connected to the frame body.

5. The electroplating fixture according to claim 4, characterized in that: Two pressing ends are arranged on the side portion between any two adjacent second openings distributed along a direction perpendicular to the length extension direction of the side portion, and the two pressing ends are respectively cantilevered in the two second openings.

6. The electroplating fixture according to claim 4, characterized in that: In the conductive pressing member, each pressing portion includes an extension section and a clamping section bent and extended from one end of the extension section, wherein the extension direction of the extension section is perpendicular to the length extension direction of the connecting portion, the clamping section extends along the thickness direction of the frame, and the pressing end is arranged on one end of the clamping section away from the extension section.

7. The electroplating fixture according to claim 4, characterized in that: The frame includes a plurality of horizontal plates extending along a first direction and a plurality of vertical plates extending along a second direction, the first direction and the second direction are perpendicular to each other, all of the horizontal plates are spaced apart along the second direction, all of the vertical plates are spaced apart along the first direction, a second opening is formed between two adjacent horizontal plates and two adjacent vertical plates, the conductive pressing member is fixedly provided on each of the vertical plates, and the connecting portion of the conductive pressing member extends along the second direction.

8. The electroplating fixture according to claim 4, characterized in that: The frame is provided with an anti-plating coating.

9. The electroplating fixture according to claim 1, characterized in that: When the two clamping frames are detachably fixed on different sides of the fixed frame in the thickness direction, the conductive frame is clamped between each clamping frame and the fixed frame; during electroplating, the conductive pressing members on the two conductive frames can clamp the two side surfaces of the product to be electroplated placed in the first opening in the thickness direction, and the orthographic projections of the conductive pressing members on the two conductive frames on the surface of the product to be electroplated completely overlap or partially overlap.

10. The electroplating fixture according to any one of claims 4 to 9, characterized in that: The clamping frame is provided with a plurality of adjustment components, each of which comprises a pushing member capable of adjusting the position along the thickness direction of the clamping frame, and the pushing member abuts against the pressing portion.

11. The electroplating fixture according to claim 10, characterized in that: The adjustment assembly also includes a sleeve, which extends along the thickness direction of the clamping frame. The sleeve has a hollow cavity. The pushing member is slidably arranged in the hollow cavity along its own axial direction. The pushing member has at least a contact end located outside the hollow cavity and used to abut against the pressing portion. The adjustment assembly also includes an elastic member that provides the force required for the pushing member to move toward the pressing portion, and an adjusting member for adjusting the position of the sleeve on the clamping frame.

12. The electroplating fixture according to claim 11, characterized in that: The adjustment component adopts any one of the following structures or a combination of any two structures: (1) A limiting member is fixedly provided on the sleeve, the elastic member is a spring, the spring is located in the hollow cavity, and the spring abuts between the limiting member and the pushing member; (2) The number of the adjustment components and the pressing parts is the same and their positions correspond one to one; (3) The adjusting member is an adjusting nut, an external thread is provided on the outer circumference of the sleeve, the adjusting nut is sleeved on the outer circumference of the sleeve and is threadedly connected to the sleeve, wherein the adjusting nut can be rotatably arranged on the clamping frame around its own axis.

13. The electroplating fixture according to claim 1, characterized in that: A positioning structure is further provided between the clamping frame and the fixing frame; and / or a locking structure for locking the fixing frame and the clamping frame is further provided between the fixing frame and the clamping frame.

14. The electroplating fixture according to claim 1, characterized in that: A buckle assembly is also provided between the clamping frame and the fixed frame, and the buckle assembly includes a buckle part and a mating part that can be connected with each other, and the buckle part and the mating part are respectively provided on the clamping frame and the fixed frame. When the buckle part and the mating part are connected with each other, there is a gap between the fixed frame and the clamping frame along the thickness direction.

15. The electroplating fixture according to claim 14, characterized in that: One end of the fastener is rotatably connected to one of the fixed frame and the clamping frame, and the other end of the fastener has a slot. The mating piece is arranged on the other of the fixed frame and the clamping frame, and the slot can be matingly engaged with the mating piece, so that the fastener is matingly connected with the mating piece.

16. The electroplating fixture according to claim 1, characterized in that: The fixing frame is provided with an avoidance structure for accommodating the conductive pressing member.

17. The electroplating fixture according to claim 16, characterized in that: The avoidance structure includes a plurality of avoidance grooves, which penetrate along the thickness direction of the fixing frame. When the electroplating fixture is taken out of the electroplating solution, the avoidance grooves form guide grooves for allowing the electroplating solution to flow out. And / or, the conductive pressing member is fixedly connected to the conductive frame via a fastening screw, and the avoidance structure includes a mounting groove for accommodating the head of the fastening screw.

18. An electroplating device, characterized in that: Comprising the electroplating fixture as described in any one of claims 1 to 17.

19. A photovoltaic cell manufacturing device, including an electroplating device, characterized in that: The electroplating equipment also includes an electroplating fixture as described in any one of claims 1 to 17.

20. An electroplating method, characterized in that: The following steps are involved: Mounting the product to be electroplated on a fixing frame having a first opening, so that the edge of the first surface of the product to be electroplated overlaps the edge of the first opening, and the area to be electroplated on the product to be electroplated is exposed from the first opening; A conductive frame having a second opening and a clamping frame having a third opening are fixedly connected to form a conductive clamping assembly, so that the orthographic projection of the second opening on the third opening completely overlaps or partially overlaps, and a conductive pressing member cantilevered into the second opening is provided at the edge of the second opening; The conductive clamping assembly is fixedly connected to the fixed frame containing the product to be electroplated from the second surface direction of the product to be electroplated to form an electroplating fixture containing the product to be electroplated, so that the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixed frame at least partially overlap, so that the free end of the conductive pressing member presses against the area to be electroplated on the second surface of the product to be electroplated; or, the two conductive clamping assemblies are respectively fixedly connected to the fixed frame containing the product to be electroplated from the two surface directions of the product to be electroplated to form an electroplating fixture containing the product to be electroplated, so that the orthographic projections of the first opening, the second opening and the third opening in the thickness direction of the fixed frame at least partially overlap, so that the free ends of the conductive pressing members on the two conductive clamping assemblies are respectively pressed against the areas to be electroplated on both sides of the product to be electroplated; placing the electroplating fixture carrying the product to be electroplated into an electroplating tank; Energizing the anode in the electroplating tank and the conductive frame to electroplate the product to be electroplated; The first surface and the second surface are two opposite surfaces of the product to be electroplated, the fixing frame is an insulator, the clamping frame is an insulator, and the conductive frame is a conductor.

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