A graphite sheet card point automatic pressing device

Abstract

The present invention provides a graphite sheet card point automatic press-fitting device, including a workbench, a frame, a press-fitting platform, a mobile module, a suction cup assembly, a press-fitting assembly, a vibration plate feeding system and a control unit, wherein a frame fixing cover is arranged on the workbench; and a press-fitting platform is arranged on the workbench for placing graphite sheets. The present invention uses a control unit for electrical control, uses a vibration plate feeding system to supply card points, uses a mobile module to realize the front-back, left-right, and up-and-down movements of the suction cup assembly and the press-fitting assembly, uses a suction cup assembly for loading and unloading operations, and uses a press-fitting assembly to accurately press-fit the card points into the card holes on the graphite sheet. The camera in the press-fitting assembly can improve the press-fitting positioning accuracy and avoid mis-pressing. The pressure sensor can detect the pressure during press-fitting to avoid over-pressing, thereby improving the press-fitting qualified rate and the press-fitting efficiency.

Description

Technical Field

[0001] The invention relates to the field of solar cell manufacturing equipment, and in particular to a graphite sheet clamping point automatic pressing device. Background Art

[0002] In the production process of solar cells, the PECVD (Plasma Enhanced Chemical Vapor Deposition) coating process is an important part of the production process. PECVD uses microwaves or radio frequencies to ionize the gas containing the atoms that make up the film, forming plasma locally. The plasma is very chemically active and easily reacts to deposit the desired film on the substrate. When the silicon wafer is subjected to the surface coating process, the uncoated silicon wafer needs to be inserted into the wafer carrier of the PECVD vacuum coating equipment. At present, the wafer carrier usually uses a graphite boat. The specific operation process is: insert the silicon wafer into the graphite boat and position it on it through the graphite boat card point, then place the graphite boat carrying the silicon wafer in the PECVD vacuum coating equipment, and use the PECVD process to coat the silicon wafer.

[0003] In order to fix the silicon wafer in the graphite boat, the graphite sheet of the graphite boat is provided with a clamping point for fixing the silicon wafer. In order to press the clamping point to the corresponding position of the graphite sheet, a clamping point pressing device is required. The current clamping point pressing device has low positioning accuracy during operation, which is easy to cause mis-pressing and reduce the product qualification rate; the pressure during pressing cannot be accurately controlled, and over-pressing can easily cause damage to the graphite sheet. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose an automatic pressing device for graphite sheet card points, which automatically performs loading, card point pressing and unloading operations, accurately locates the card point pressing position to avoid wrong pressing; and detects the pressure during pressing to avoid damage to the graphite sheet caused by overpressure.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A graphite sheet card point automatic press-fitting device, comprising a workbench, a frame, a press-fitting platform, a mobile module, a suction cup assembly, a press-fitting assembly, a vibration plate feeding system and a control unit, wherein the frame fixing cover is arranged on the workbench; the press-fitting platform is arranged on the workbench for placing graphite sheets; the control unit is arranged on the outside of the frame, and the control unit is electrically connected to the mobile module, the suction cup assembly, the press-fitting assembly and the vibration plate feeding system;

[0007] The movable module comprises a first screw module, a second screw module, a third screw module and a fourth screw module, the first screw module is arranged on both sides of the inner wall of the frame along the first direction, the second screw module is arranged along the second direction, two ends of the second screw module are slidably connected to the first screw modules on both sides respectively, the third screw module can be slidably arranged on one side of the second screw module along the second direction, the fourth screw module can be slidably arranged on the other side of the second screw module along the second direction, and the length directions of the third screw module and the fourth screw module are both along the third direction; wherein, the first direction, the second direction and the third direction are perpendicular to each other;

[0008] The suction cup assembly comprises a first sliding plate, a first fixed plate and a suction cup, wherein the first sliding plate can be slidably arranged on the third screw rod module along the third direction, the first fixed plate is connected to the first sliding plate, and the suction cup is arranged on the bottom surface of the first fixed plate;

[0009] The press assembly includes a second sliding plate, a second fixed plate, a camera, a pressure sensor and a pressure head, wherein the second sliding plate can be slidably arranged on the fourth screw module along the third direction, the second fixed plate is connected to the second sliding plate, the camera is arranged on the second fixed plate, the pressure head is arranged on the bottom surface of the second fixed plate, and the pressure sensor is arranged at the connection between the pressure head and the second fixed plate;

[0010] The vibration plate feeding system is arranged on the workbench and is used for supplying clamping points for the press-fit assembly.

[0011] Preferably, the press-fitting platform is provided with a positioning groove matching the structure of the graphite sheet.

[0012] Preferably, a loading area and a unloading area are provided on the workbench, and the loading area is arranged between the unloading area and the press-fitting platform.

[0013] Preferably, positioning blocks are provided at both ends of the loading area and the unloading area, and the workbench is provided with an adjustment groove along the second direction, the lower end of the positioning block is embedded in the adjustment groove, and the positioning block is fixed by a locking piece.

[0014] Preferably, the first fixing plate is arranged along the second direction, and there are a plurality of suction cups, which are evenly spaced and arranged on the bottom surface of the first fixing plate.

[0015] Preferably, a plurality of clamping holes for pressing clamping points are provided around each silicon wafer installation position on the graphite sheet, and there are a plurality of pressing heads, and the position arrangement of the plurality of pressing heads matches the position arrangement of the plurality of clamping holes.

[0016] Preferably, the control unit comprises a display screen and an indicator light, the display screen is used to display the working status of the equipment, and the indicator light is used to send a prompt signal when overvoltage occurs.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention utilizes a control unit for electrical control, utilizes a vibration plate feeding system to supply card points, utilizes a mobile module to realize the front-and-rear, left-and-right, and up-and-down movements of a suction cup assembly and a press-fit assembly, utilizes a suction cup assembly for loading and unloading operations, utilizes a press-fit assembly to accurately press the card points into card holes on a graphite sheet, the camera in the press-fit assembly can improve the press-fit positioning accuracy and avoid mis-pressing, the pressure sensor can detect the pressure during press-fitting and avoid over-pressing, thereby improving the press-fitting qualified rate and the press-fitting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a graphite sheet clamping point automatic press-fitting device of the present invention;

[0019] Figure 2 It is a front view of a graphite sheet clamping point automatic press-fitting device of the present invention;

[0020] Figure 3 It is a rear view of a graphite sheet clamping point automatic press-fitting device of the present invention;

[0021] Figure 4 A top view of a graphite sheet clamping point automatic press-fitting device of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a press-fitting assembly in a graphite sheet clamping point automatic press-fitting device of the present invention;

[0023] Figure 6 Schematic diagram of the structure of the graphite sheet to be pressed into the card point.

[0024] In the figure, 100-pressing equipment, 10-workbench, 11-loading area, 12-unloading area, 13-positioning block, 14-adjusting groove, 15-locking piece, 20-frame, 30-pressing platform, 31-positioning groove, 40-moving module, 41-first screw module, 42-second screw module, 43-third screw module, 44-fourth screw module, 50-suction cup assembly, 51-first sliding plate, 52-first fixed plate, 53-suction cup, 60-pressing assembly, 61-second sliding plate, 62-second fixed plate, 63-camera, 64-pressure sensor, 65-pressure head, 70-vibration plate feeding system, 80-control unit, 81-display screen, 82-indicator light, 200-graphite sheet, 201-card hole, 202-silicon wafer installation position, 300-card point, X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0025] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0026] Please refer to Figures 1 to 6 , Figure 1 A three-dimensional diagram of a graphite sheet clamping point automatic press-fitting device of the present invention; Figure 2 It is a front view of a graphite sheet clamping point automatic press-fitting device of the present invention; Figure 3 It is a rear view of a graphite sheet clamping point automatic press-fitting device of the present invention; Figure 4 A top view of a graphite sheet clamping point automatic press-fitting device of the present invention; Figure 5 It is a structural schematic diagram of a press-fitting assembly in a graphite sheet clamping point automatic press-fitting device of the present invention; Figure 6 Schematic diagram of the structure of the graphite sheet to be pressed into the card point.

[0027] like Figure 6 As shown, a plurality of silicon wafer mounting positions 202 are provided on the graphite wafer 200 to be press-fitted with the clamping points, and a plurality of clamping holes 201 are provided around each silicon wafer mounting position 202 for press-fitting the clamping points.

[0028] Please refer to Figures 1 to 5 The present invention provides an automatic pressing device 100 for pressing points of graphite sheets, comprising a workbench 10, a frame 20, a pressing platform 30, a moving module 40, a suction cup assembly 50, a pressing assembly 60, a vibration plate feeding system 70 and a control unit 80. The frame 20 fixed cover is arranged on the workbench 10; the pressing platform 30 is arranged on the workbench 10 for placing graphite sheets; preferably, the pressing platform 30 is provided with a positioning groove 31 matching the structure of the graphite sheet, so as to facilitate accurate positioning of the graphite sheet when pressing the pressing points and avoid mis-pressing. The vibration plate feeding system 70 is arranged on the workbench 10 for supplying the pressing points to the pressing assembly 60. Please refer to Figure 1 or Figure 4The workbench 10 is also provided with a loading area 11 and a unloading area 12. In order to facilitate the unloading of the operator, the unloading area 11 is arranged at the front side of the workbench 10, and the loading area 11 is arranged between the unloading area 12 and the pressing platform 30. The control unit 80 is arranged on the outside of the frame 20, and the control unit 80 is electrically connected with the moving module 40, the suction cup assembly 50, the pressing assembly 60, and the vibration plate feeding system 70. Under the control of the control unit 80, the vibration plate feeding system 70 supplies the card points for the press-fitting assembly 60, and the mobile module 40 is used to realize the front-back, left-right, and up-and-down movements of the suction cup assembly 50 and the press-fitting assembly 60; with the assistance of the mobile module 40, the press-fitting assembly 60 can take out the card points from the vibration plate feeding system 70, and press-fit the card points onto the graphite sheet on the press-fitting platform 30, and the suction cup assembly 50 can transport the graphite sheet to be press-fitted with the card points from the loading area 11 to the positioning groove 31 in the press-fitting platform 30, or transport the graphite sheet with the card points pressed from the press-fitting platform 30 to the unloading area 12, so as to facilitate the operator to unload. In actual manufacturing, the control unit 80 can use a controller such as a PLC, and the various modules in the press-fitting equipment 100 can work together to realize the functions of automatic loading, precise press-fitting, and automatic unloading, thereby improving work efficiency and the press-fitting qualified rate.

[0029] Please refer to Figures 1 to 4 The movable module 40 includes a first screw module 41, a second screw module 42, a third screw module 43 and a fourth screw module 44. The first screw module 41 is arranged on both sides of the inner wall of the frame 20 along the first direction X, and the second screw module 42 is arranged along the second direction Y. The two ends of the second screw module 42 are slidably connected to the first screw modules 41 on both sides respectively. The third screw module 43 can be slidably arranged on one side of the second screw module 42 along the second direction Y, and the fourth screw module 44 can be slidably arranged on the other side of the second screw module 42 along the second direction Y. The length directions of the third screw module 43 and the fourth screw module 44 are both along the third direction Z; the suction cup assembly 50 can be slidably arranged on the third screw module 43 along the third direction Z, and the press-fitting assembly 60 can be slidably arranged on the fourth screw module 44 along the third direction Z. Under the action of the control unit 80, the second screw module 42 can move along the first direction X, the third screw module 43 and the fourth screw module 44 can move along the second direction Y respectively, the suction cup assembly 50 can move along the third direction Z on the third screw module 43, and the press-fitting assembly 60 can move along the third direction Z on the fourth screw module 44, thereby realizing the three-dimensional movement of the suction cup assembly 50 and the press-fitting assembly 60.

[0030] It should be noted that in Figures 1 to 4In the device placement state shown, the first direction X refers to the front-to-back direction of the press-fitting device 100, the second direction Y refers to the left-to-right direction of the press-fitting device 100, and the third direction Z refers to the up-down direction of the press-fitting device 100. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. In specific manufacturing, the moving module 40 can adopt a screw module sold on the market, and the three-dimensional movement of the moving module 40 can be achieved through the logic control of the control unit 80. The specific structure and working principle of the screw module belong to the prior art and will not be repeated here.

[0031] See also Figure 2 , the suction cup assembly 50 includes a first sliding plate 51, a first fixed plate 52 and a suction cup 53. The first sliding plate 51 can be slidably arranged on the third screw module 43 along the third direction Z. The first fixed plate 52 is connected to the first sliding plate 51, and the suction cup 53 is arranged on the bottom surface of the first fixed plate 52. With the assistance of the moving module 40, the suction cup assembly 50 can transport the graphite sheet in the loading area 11 to the pressing platform 30, and can also transport the graphite sheet after the pressing point from the pressing platform 30 to the unloading area 12. Preferably, the first fixed plate 52 is arranged along the second direction Y, and there are multiple suction cups 53. The multiple suction cups 53 are evenly spaced and arranged on the bottom surface of the first fixed plate, which can increase the stability of the suction cup 53 when grasping and avoid the graphite sheet from falling off during the loading and unloading process. Furthermore, the suction cup 53 is made of silicone material, which has a buffering effect and can prevent the graphite sheet from being crushed, deformed or falling during transportation.

[0032] Please refer to Figures 3 to 5 The press-fitting assembly 60 includes a second sliding plate 61, a second fixed plate 62, a camera 63, a pressure sensor 64 and a pressure head 65. The second sliding plate 61 can be slidably arranged on the fourth screw module 44 along the third direction Z. The second fixed plate 62 is connected to the second sliding plate 61. The camera 63 is arranged on the second fixed plate 62. The pressure head 65 is arranged on the bottom surface of the second fixed plate 62. The pressure sensor 64 is arranged at the connection between the pressure head 65 and the second fixed plate 62. Under the action of the control unit 80, the press-fitting assembly 60 takes out the card point 300 from the vibration plate feeding system 70. The camera 63 can accurately locate the press-fitting position. The pressure head 65 accurately presses the card point 300 into the multiple card holes 201 of the graphite sheet 200 on the press-fitting platform 30. The pressure sensor 64 is used to detect the pressure value of the pressure head 65 on the card point 300 to avoid damage to the graphite sheet 200 caused by excessive pressure.

[0033] Preferably, see Figure 1, positioning blocks 13 are provided at both ends of the loading area 11 and the unloading area 12, and an adjustment groove 14 is provided on the workbench 10 along the second direction Y, and the lower end of the positioning block 13 is embedded in the adjustment groove 14, and the positioning block 13 is fixed by a locking member 15. The positioning block 13 is used to roughly position the graphite sheet at both ends of the loading area 11 or the two ends of the unloading area 12, so as to facilitate the grabbing of the suction cup assembly 50. Specifically, the locking member 15 can be a screw, a screw or other parts, which can adjust the fixed position of the positioning block 13 in the adjustment groove 14.

[0034] Please refer to Figure 5 and Figure 6 , a plurality of clamping holes 201 for pressing the clamping points are arranged around each silicon wafer mounting position 202 on the graphite sheet 200, and there are a plurality of pressing heads 65, and the position arrangement of the plurality of pressing heads 65 matches the position arrangement of the plurality of clamping holes 201. In one embodiment, three clamping holes 201 are arranged around each silicon wafer mounting position 202 on the graphite sheet 200, and correspondingly, three pressing heads 65 are also arranged, and their arrangement matches the arrangement of the three clamping holes 201 on the graphite sheet 200, so that the function of accurately pressing the clamping points 300 into the clamping holes 201 on the graphite sheet 200 can be realized.

[0035] Preferably, the vibrating plate feeding system 70 can be provided in multiple groups, so as to provide different types of clamping points for the press-fit assembly 60. Figure 4 In one embodiment, there are two sets of vibration plate feeding systems 70, which are respectively arranged on both sides of the rear of the workbench 10 to supply clamping points for the press-fit assembly 60. In actual manufacturing, the vibration plate feeding system 70 can adopt a vibration plate feeding system sold on the market, and its specific structure and working principle belong to the prior art and will not be repeated here.

[0036] Please refer to Figure 1 and Figure 2 The control unit 80 includes a display screen 81 and an indicator light 82. The display screen 81 is used to display the working status of the equipment, which is convenient for operators to control and monitor the equipment; the indicator light 82 is used to send a prompt signal when overpressure occurs, which is convenient for operators to adjust or repair the equipment.

[0037] In summary, the present invention provides an automatic pressing device for graphite sheet card points, which uses a control unit for electrical control, uses a vibration plate feeding system to supply card points, uses a mobile module to realize the front and back, left and right, and up and down movements of a suction cup assembly and a pressing assembly, uses a suction cup assembly for loading and unloading operations, and uses a pressing assembly to accurately press the card points into card holes on the graphite sheet. The camera in the pressing assembly can improve the pressing positioning accuracy and avoid mispressing. The pressure sensor can detect the pressure during pressing to avoid overpressing, thereby improving the press-fitting pass rate and the press-fitting efficiency.

[0038] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A graphite sheet automatic pressing device, characterized in that: It includes a workbench, a frame, a press-fitting platform, a mobile module, a suction cup assembly, a press-fitting assembly, a vibration plate feeding system and a control unit, wherein the frame fixing cover is arranged on the workbench; the press-fitting platform is arranged on the workbench for placing graphite sheets; a loading area and a unloading area are arranged on the workbench, and the loading area is arranged between the unloading area and the press-fitting platform; the control unit is arranged on the outside of the frame, and the control unit is electrically connected to the mobile module, the suction cup assembly, the press-fitting assembly and the vibration plate feeding system; The movable module is used to realize the front-back, left-right, and up-and-down movements of the suction cup assembly and the press-fitting assembly; the movable module comprises a first screw module, a second screw module, a third screw module, and a fourth screw module, the first screw module is arranged on both sides of the inner wall of the frame along the first direction, the second screw module is arranged along the second direction, the two ends of the second screw module are slidably connected to the first screw modules on both sides respectively, the third screw module can be slidably arranged on one side of the second screw module along the second direction, the fourth screw module can be slidably arranged on the other side of the second screw module along the second direction, and the length directions of the third screw module and the fourth screw module are both along the third direction; wherein, the first direction, the second direction, and the third direction are perpendicular to each other; The suction cup assembly is used to transport the graphite sheet in the loading area to the pressing platform, or to transport the graphite sheet after the pressing point from the pressing platform to the unloading area; the suction cup assembly includes a first sliding plate, a first fixed plate and a suction cup, the first sliding plate can be slidably arranged on the third screw module along the third direction, the first fixed plate is connected to the first sliding plate, and the suction cup is arranged on the bottom surface of the first fixed plate; the suction cup is made of silicone; The press assembly includes a second sliding plate, a second fixed plate, a camera, a pressure sensor and a pressure head, wherein the second sliding plate can be slidably arranged on the fourth screw module along the third direction, the second fixed plate is connected to the second sliding plate, the camera is arranged on the second fixed plate, the pressure head is arranged on the bottom surface of the second fixed plate, the pressure sensor is arranged at the connection between the pressure head and the second fixed plate, and the pressure sensor is used to detect the pressure value of the pressure head on the card point; The vibration plate feeding system is arranged on the workbench and is used for supplying clamping points for the press-fit assembly.

2. The graphite sheet automatic pressing device according to claim 1, characterized in that: The press-fitting platform is provided with a positioning groove matching the structure of the graphite sheet.

3. The graphite sheet automatic pressing device according to claim 1, characterized in that: Positioning blocks are provided at both ends of the loading area and the unloading area, and an adjustment groove along the second direction is provided on the workbench. The lower end of the positioning block is embedded in the adjustment groove, and the positioning block is fixed by a locking piece.

4. The graphite sheet automatic pressing device according to claim 1, characterized in that: The first fixing plate is arranged along the second direction, and there are a plurality of suction cups, which are evenly spaced and arranged on the bottom surface of the first fixing plate.

5. The graphite sheet automatic pressing device according to claim 1, characterized in that: A plurality of clamping holes for pressing clamping points are arranged around each silicon wafer installation position on the graphite wafer. There are a plurality of pressing heads, and the position arrangement of the plurality of pressing heads matches the position arrangement of the plurality of clamping holes.

6. The graphite sheet automatic pressing device according to claim 1, characterized in that: The control unit includes a display screen and an indicator light, wherein the display screen is used to display the working status of the equipment, and the indicator light is used to send a prompt signal when overvoltage occurs.

Images