Tool for spraying solar cell array substrate fastening part and spraying method

Abstract

The invention relates to a tool for spraying a fastening part of a solar cell array substrate and a spraying method, the tool for spraying comprises a workbench, a clamping device and a water cooling device, the clamping device is vertically fixed on the front side of the workbench, a tool hole is formed in the clamping device, a water cooling channel for cooling the fastening part fixed at the tool hole is arranged in the clamping device, and the water cooling channel is used for cooling the fastening part fixed at the tool hole. The water cooling channel is connected with the water cooling device, a baffle used for protecting the clamping device is arranged on the front side of the clamping device, and the size of the baffle is larger than that of the clamping device. The tool for spraying is simple and reasonable in structure, convenient to disassemble and assemble and long in service life, the spraying method is convenient to operate, the spraying quality is good, the problems that the production efficiency is low, and the assembly precision is reduced due to thermal deformation caused by unreasonable tool design can be effectively solved, resources can be saved, continuous spraying operation can be achieved, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of supersonic flame spraying tooling, and relates to a tooling and a spraying method for spraying fastening parts of a solar cell array substrate. Background Art

[0002] The solar array is the main energy source of the spacecraft, and the solar array substrate is the main carrier of the solar cell. The solar array is generally designed as a folding structure to reduce the space occupied by the rocket system during the launch phase, and unfold after entering orbit. The clamping release mechanism folds the solar array and fixes it on the satellite during the launch phase, and releases the constraint after the satellite enters orbit. The clamping device is provided with two upper and lower clamping bushings to ensure that the solar array substrate fits correctly when folded.

[0003] When the solar cell array substrate body is unfolded, in order to prevent cold welding between the two clamping bushings, a 0.2mm thick tungsten carbide coating is usually plated on the surface of the clamping bushing. The accuracy of the gluing position of the clamping bushing is an important factor in ensuring that the clamping release device can work reliably, which puts high demands on the coating.

[0004] The existing spraying method requires the design of a wrapping tool, and both disassembly and assembly require a lot of manpower. In addition, due to the unreasonable design of the tool, the bushing will be thermally deformed, resulting in a decrease in assembly accuracy. The use of special tooling to facilitate the disassembly and assembly of the bushing greatly improves production efficiency, and the water cooling device can completely avoid the problem of decreased assembly accuracy caused by thermal deformation. The baffle is also convenient for later replacement, avoiding the waste of resources caused by the overall scrapping of the tooling. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a tool for spraying fastening parts of a solar cell array substrate which has a reasonable structure, is convenient for assembly and disassembly and has high precision.

[0006] The second technical problem to be solved by the present invention is to provide a method for spraying fastening parts of a solar cell array substrate which is easy to operate and has good spraying quality, and can realize continuous spraying and improve production efficiency.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a tool for spraying fastening parts of a solar cell array substrate, characterized in that: the spraying tool includes a workbench, a clamping device and a water cooling device, the clamping device is vertically fixed on the front side of the workbench, the clamping device is provided with a tooling hole, the clamping device is provided with a water cooling channel for cooling the fastening parts fixed at the tooling hole, the water cooling channel is connected to the water cooling device, and the front side of the clamping device is provided with a baffle for protecting the clamping device, and the size of the baffle is larger than the clamping device.

[0008] As an improvement, the workbench is rectangular, the clamping device is made of aluminum alloy, and the clamping device is a rectangular plate structure assembled by bolts of an upper tooling, a middle tooling and a lower tooling. The clamping device is vertically fixed to the front side of the workbench along the length direction of the workbench. A row of semicircular holes are respectively recessed at the lower end of the upper tooling, the upper end of the lower tooling, and the upper and lower ends of the middle tooling. After the upper tooling, the middle tooling and the lower tooling are assembled, two rows of circular tooling holes are formed. The diameter of the tooling hole is larger than the outer diameter of the fastening part, and the difference between the two is 0.02±0.005mm.

[0009] Furthermore, first positioning grooves are respectively provided on the left and right sides of the lower end of the lower tooling, corresponding second positioning grooves are provided on the left and right sides of the lower end of the baffle, corresponding positioning holes are provided on the front side of the workbench, positioning bolts are convexly provided on the front side of the middle tooling, and corresponding positioning bolt holes are provided on the baffle. The baffle is vertically arranged on the front side of the clamping device through the cooperation of the positioning bolts and the positioning bolt holes, and the baffle, the lower tooling and the workbench are fixedly connected by bolts passing through the second positioning groove, the first positioning groove and the positioning holes, and two rows of circular holes corresponding to the two rows of tooling holes of the clamping device are provided on the baffle.

[0010] Furthermore, a water cooling channel is provided inside the middle tooling, and a water inlet interface and a water outlet interface are provided on the left and right sides of the middle tooling, and the water inlet interface and the water outlet interface are connected to the water cooling device through a water inlet pipe and a water outlet pipe respectively.

[0011] Furthermore, the water cooling device includes a water pump and a thermometer. The thermometer is installed near the fastening parts. Both ends of the water pump are connected to the water inlet interface and the water outlet interface at both ends of the middle tooling through the water inlet pipe and the water outlet pipe respectively. When the thermometer measures that the surface temperature of the fastening parts is lower than 50°C, the next spraying is carried out.

[0012] The technical solution adopted by the present invention to solve the above second technical problem is: a method for spraying fastening parts of a solar cell array substrate, characterized in that: spraying is performed using the spraying tool described in claim 5, comprising the following steps:

[0013] 1) Before spraying, first connect and position the baffle plate and the middle tooling with positioning bolts, place the fastening parts in the tooling holes of the clamping device, and connect and fix the upper tooling, middle tooling, and lower tooling with bolts;

[0014] 2) Install the clamping device and baffle of the fastened parts and fix them to the workbench with bolts, then connect one end of the water inlet and outlet pipes to the water pump, and the other end to the water inlet and outlet interfaces at the left and right ends of the middle tooling to cool down the entire clamping device. Measure the surface temperature of the fastened parts by adjusting the position of the thermometer. When the temperature is below 50°C, proceed with the next spraying.

[0015] 3) Turn on the water pump before starting the supersonic flame spraying equipment for spraying, and use the spray gun to fully spray the surface of the fastened parts as the equipment moves.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. Fixing the fastening parts by three-and-a-half-type clamping fixture can facilitate the disassembly and assembly of the workpiece, save time and improve production efficiency. In addition, the fixture fits the fastening parts and the water cooling device can take away the heat well, preventing the fastening parts from thermal deformation during the spraying process, making the surface quality of the sprayed fastening parts better and more precise.

[0018] 2. The addition of the baffle can prevent the high-temperature jet from directly spraying onto the joint of the clamping tooling to destroy its combination accuracy, and can also prevent the fastening parts from sticking to the clamping device during the spraying process, effectively avoiding the generation of waste, and can also protect the water inlet and outlet pipes, effectively prolonging the service life of the tooling, and the baffle can be replaced at any time, saving costs and avoiding waste;

[0019] 3. The positioning grooves of the workbench and the clamping device are fixedly connected by bolts, which is convenient for replacing multiple sets of clamping devices, saving disassembly and assembly time, and can realize continuous spraying operation and improve production efficiency;

[0020] The spraying tooling structure of the present invention is simple and reasonable, easy to assemble and disassemble, and has a long service life. The spraying method is easy to operate and has good spraying quality. It can effectively solve the problems of low production efficiency and reduced assembly accuracy caused by thermal deformation due to unreasonable tooling design. It can also save resources, realize continuous spraying operations, and greatly improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a tool for spraying fastening parts of a solar cell array substrate provided by the present invention;

[0022] Figure 2 It is a side view of a tool for spraying fastening parts of a solar cell array substrate provided by the present invention;

[0023] Figure 3 It is a structural schematic diagram of a tooling for spraying fastening parts of a solar cell array substrate provided by the present invention;

[0024] Figure 4 is an exploded view of the baffle, the clamping device and the workbench of the present invention;

[0025] Figure 5 It is a cross-sectional view of the water cooling channel in the clamping device of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 5 As shown, a tool for spraying fastening parts of a solar cell array substrate, the spraying tool comprises a workbench 1, a clamping device 2 and a water cooling device A, the clamping device 2 is vertically fixed on the front side of the workbench 1, the clamping device 2 is provided with a tooling hole 20, the clamping device 2 is provided with a water cooling channel 221 for cooling the fastening parts fixed at the tooling hole 20, the water cooling channel 221 is connected to the water cooling device A, the front side of the clamping device 2 is provided with a baffle 3 for protecting the clamping device 2, and the size of the baffle 3 is larger than the clamping device 2.

[0028] The specific structure is as follows: the workbench 1 of this embodiment is rectangular, the clamping device 2 is made of aluminum alloy, the clamping device 2 is a rectangular plate structure assembled by an upper tooling 21, a middle tooling 22 and a lower tooling 23 through bolts 5, and the clamping device is vertically fixed to the front side of the workbench 1 along the length direction of the workbench 1, and a row of semicircular holes are respectively recessed at the lower end of the upper tooling 21, the upper end of the lower tooling 23, and the upper and lower ends of the middle tooling 22. After the upper tooling 21, the middle tooling 22 and the lower tooling 23 are assembled, two rows of circular tooling holes 20 are formed. In order to better fit the fastening parts, the diameter of the tooling hole 20 is larger than the outer diameter of the fastening parts, and the difference between the two is 0.02±0.005mm, which is convenient for disassembly of the workpiece.

[0029] The lower end of the lower tooling 23 is provided with first positioning grooves 231 on both sides, the lower end of the baffle plate 3 is provided with corresponding second positioning grooves 32 on both sides, the front side of the workbench 1 is provided with corresponding positioning holes 11, the front side of the middle tooling 22 is provided with positioning bolts 224, the baffle plate 3 is provided with corresponding positioning bolt holes, the baffle plate 3 is vertically arranged on the front side of the clamping device 2 through the cooperation of the positioning bolts 224 and the positioning bolt holes, the baffle plate 3 and the lower tooling 23 are fixedly connected to the workbench 1 through the bolts 4 passing through the second positioning grooves 32, the first positioning grooves 231, and the positioning holes 11, and the baffle plate 3 is provided with two rows of circular holes 31 corresponding to the two rows of tooling holes 20 of the clamping device 2. A water cooling channel 221 is provided inside the middle tooling 22, and a water inlet interface 223 and a water outlet interface 222 are provided on the left and right sides of the middle tooling 22, and the water inlet interface 223 and the water outlet interface 222 are connected to the water cooling device A through the water inlet pipe 7 and the water outlet pipe 8 respectively.

[0030] The water cooling device A includes a water pump 6 and a thermometer 9. The thermometer 9 is installed near the fastener and is used to measure the surface stability of the fastener. The two ends of the water pump 6 are connected to the water inlet interface 223 and the water outlet interface 222 at the two ends of the middle tooling 22 through the water inlet pipe 7 and the water outlet pipe 8 respectively. When the thermometer 9 measures that the surface temperature of the fastener is lower than 50°C, the next spraying is carried out.

[0031] The clamping device 2 is processed by a precision wire cutting machine. The size of the baffle 3 is larger than the clamping device 2 and can block the water inlet pipe 7 and the water outlet pipe 8, which can prevent high-temperature powder from being directly sprayed onto the clamping device 2 to destroy its bonding accuracy, and can also avoid adhesion between the parts and the clamping device 2 during the spraying process. It can also protect the water inlet pipe 7 and the water outlet pipe 8 and extend the service life of the tooling.

[0032] A method for spraying fastening parts of a solar cell array substrate, using the above-mentioned spraying tool for spraying, comprises the following steps:

[0033] 1) Before spraying, first connect and position the baffle 3 and the middle tooling 22 through the positioning bolts 224, place the fastening parts in the tooling holes 20 of the clamping device 2, and connect and fix the upper tooling 21, the middle tooling 22, and the lower tooling 23 through the bolts 5;

[0034] 2) The clamping device 2 and baffle 3 with the fastened parts installed are connected and fixed to the workbench 1 by bolts 4, and then one end of the water inlet pipe 7 and the water outlet pipe 8 are connected to the water pump 6, and the other end is connected to the water inlet interface 223 and the water outlet interface 222 at the left and right ends of the middle tooling 22 to cool the entire clamping device 2. Usually, the water pump 6, the water inlet pipe 7, the clamping device 2, and the water outlet pipe 8 are connected in series to form a cooling self-circulating loop. And by adjusting the position of the thermometer 9, the surface temperature of the fastened parts is measured, and the next spraying is carried out when the temperature is below 50°C.

[0035] 3) Before starting the supersonic flame spraying equipment for spraying, turn on the water pump 6, and as the equipment moves, use the spray gun to fully spray the surface of the fastened parts.

[0036] The spraying tooling of the present embodiment is not only convenient for assembly and disassembly, but also the tooling fits the fastening parts and cooperates with the water cooling device to take away heat well, preventing the fastening parts from thermal deformation during the spraying process. The surface quality of the fastening parts is better and the precision is higher, and continuous spraying operations can be realized, which greatly improves production efficiency.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tool for spraying fastening parts of a solar cell array substrate, characterized in that: The spraying tooling includes a workbench, a clamping device and a water cooling device. The clamping device is vertically fixed on the front side of the workbench. The clamping device is provided with a tooling hole. The clamping device is provided with a water cooling channel for cooling the fastening parts fixed at the tooling hole. The water cooling channel is connected to the water cooling device. A baffle for protecting the clamping device is provided on the front side of the clamping device, and the size of the baffle is larger than the clamping device.

2. The tooling for spraying fastening parts of a solar cell array substrate according to claim 1, characterized in that: The workbench is rectangular, and the clamping device is made of aluminum alloy. The clamping device is a rectangular plate structure assembled by upper tooling, middle tooling and lower tooling through bolts. The clamping device is vertically fixed to the front side of the workbench along the length direction of the workbench. A row of semicircular holes are respectively recessed at the lower end of the upper tooling, the upper end of the lower tooling, and the upper and lower ends of the middle tooling. After the upper tooling, the middle tooling and the lower tooling are assembled, two rows of circular tooling holes are formed. The diameter of the tooling hole is larger than the outer diameter of the fastening part, and the difference between the two is 0.02±0.005mm.

3. The tooling for spraying fastening parts of a solar cell array substrate according to claim 2, characterized in that: The left and right sides of the lower end of the lower tooling are respectively provided with first positioning grooves, the left and right sides of the lower end of the baffle are provided with corresponding second positioning grooves, the front side of the workbench is provided with corresponding positioning holes, the front side surface of the middle tooling is convexly provided with positioning bolts, and the baffle is provided with corresponding positioning bolt holes. The baffle is vertically arranged on the front side of the clamping device through the cooperation of the positioning bolts and the positioning bolt holes, and the baffle, the lower tooling and the workbench are fixedly connected by bolts passing through the second positioning groove, the first positioning groove and the positioning holes, and the baffle is provided with two rows of circular holes corresponding to the two rows of tooling holes of the clamping device.

4. The tooling for spraying fastening parts of a solar cell array substrate according to claim 3, characterized in that: A water cooling channel is arranged inside the middle tooling, and a water inlet interface and a water outlet interface are arranged on the left and right sides of the middle tooling, and the water inlet interface and the water outlet interface are connected to the water cooling device through a water inlet pipe and a water outlet pipe respectively.

5. The tooling for spraying fastening parts of a solar cell array substrate according to claim 4, characterized in that: The water cooling device includes a water pump and a thermometer. The thermometer is installed near the fastening parts. The two ends of the water pump are connected to the water inlet interface and the water outlet interface at the two ends of the middle tooling through the water inlet pipe and the water outlet pipe respectively. When the thermometer measures that the surface temperature of the fastening parts is lower than 50°C, the next spraying is carried out.

6. A method for spraying fastening parts of a solar cell array substrate, characterized in that: The spraying tool according to claim 5 is used for spraying, comprising the following steps: 1) Before spraying, first connect and position the baffle plate and the middle tooling with positioning bolts, place the fastening parts in the tooling holes of the clamping device, and connect and fix the upper tooling, middle tooling, and lower tooling with bolts; 2) Install the clamping device and baffle of the fastened parts and fix them to the workbench with bolts, then connect one end of the water inlet and outlet pipes to the water pump, and the other end to the water inlet and outlet interfaces at the left and right ends of the middle tooling to cool down the entire clamping device. Measure the surface temperature of the fastened parts by adjusting the position of the thermometer. When the temperature is below 50°C, proceed with the next spraying. 3) Turn on the water pump before starting the supersonic flame spraying equipment for spraying, and use the spray gun to fully spray the surface of the fastened parts as the equipment moves.

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