Thermocompression welding device for LED module processing

Abstract

The invention discloses a thermocompression welding device for LED module processing, which is applied to the technical field of thermocompression welding processing of LED modules, and is characterized in that a protection structure is arranged, so that a sealed space can be quickly formed around a welding position during thermocompression welding, air is effectively blocked, a welding spot is prevented from being in contact with oxygen at a high temperature to generate an oxidation reaction, and the service life of the welding spot is prolonged. Meanwhile, the access control assembly fills protective gas, it is ensured that a low-oxygen environment is always kept in the sealed space, the resistance of the welding spots is remarkably reduced, the conductivity and mechanical strength of the welding spots are enhanced, the LED module can be stably fixed to the workbench in the welding process through the design of the abutting assembly, and the welding quality of the LED module is improved. Module displacement caused by pressing of the hot pressing head is avoided, and the accuracy of the welding position is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of hot pressing welding processing for LED modules, and in particular relates to a hot pressing welding device for processing LED modules. Background Art

[0002] LED module is a product that arranges a certain number of light-emitting diodes together in a regular pattern, packages them together, and adds some waterproofing treatment.

[0003] In the production and processing of LED modules, hot pressing welding is an extremely critical process, and its welding quality directly determines the performance and service life of the LED module;

[0004] However, during the welding process of the existing hot pressing welding device, since the solder joints of the LED module are directly exposed to the air during high-temperature welding, they are very likely to undergo oxidation reactions with oxygen. After the solder joints are oxidized, not only does the resistance increase significantly, resulting in a significant decrease in the conductivity, affecting the luminous stability and brightness uniformity of the LED module, but the mechanical strength of the solder joints is also reduced. In the subsequent use process, the solder joints are prone to cracking, falling off, and other problems, greatly shortening the service life of the LED module.

[0005] Combining the above-mentioned problem points, it can be found that it is difficult to avoid the above-mentioned problems when the existing devices on the market are in use, and even if they can be solved, they are independent of the hot pressing process and cannot work closely together, thus failing to achieve the desired effect. Therefore, we propose a hot pressing welding device for LED module processing that can seal the welding position to form a protective cavity and fill the cavity with protective gas to avoid high-temperature oxidation of the solder joint and ensure the welding quality. Summary of the invention

[0006] The purpose of the present invention is to target an existing hot pressing welding device for LED module processing. The device has the advantage that a protective structure is provided so that a sealed space can be quickly formed around the welding position during hot pressing welding, effectively blocking the air and preventing the welding point from coming into contact with oxygen at high temperature to produce an oxidation reaction. At the same time, the passage control component fills the protective gas to ensure that a low-oxygen environment is always maintained in the sealed space, significantly reducing the resistance of the welding point, and enhancing the conductivity and mechanical strength of the welding point. The design of the pressing component ensures that the LED module can be firmly fixed on the workbench during the welding process, avoiding displacement of the module due to pressure from the hot pressing head, and ensuring the accuracy of the welding position.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A hot pressing welding device for LED module processing, comprising a processing table, a workbench is slidably arranged on the top of the processing table, a bracket is bolted between the two sides of the processing table, a hydraulic cylinder is penetrated inside the bracket, and a hot pressing head is bolted to the bottom of the hydraulic cylinder, and a protective structure is sleeved on the surface of the hot pressing head;

[0008] The protection structure includes a sealing cover, which is slidably sleeved on the surface of the hot pressure head. A pressing assembly is arranged inside the sealing cover, and the pressing assembly is connected to the hot pressure head at a side thereof. A sleeve is arranged in an annular shape on the top of the surface of the sealing cover, and a fixing rod is slidably arranged inside the sleeve, and the fixing rod is bolted to the hydraulic cylinder at a side thereof close to the output end. An injection pipe is connected to the surface of the sealing cover in an annular shape, and a passage control assembly is sleeved on the surface of the injection pipe, and the passage control assembly is used in conjunction with the sleeve.

[0009] By adopting the above technical scheme, a protective structure is set up, and a sealing cover is slidably sleeved on the surface of the hot pressing head. During the downward movement of the hot pressing head, the sealing cover can quickly fit tightly with the workbench to form a sealed space, effectively blocking external air from entering the welding area and preventing oxidation of the solder joints. The passage control component can accurately control the passage of the protective gas according to the position of the hot pressing head. When the hot pressing head moves down to a suitable position, the protective gas can smoothly enter the welding area in the sealing cover through the injection pipe. In addition, by setting a pressing component, during hot pressing welding, the pressing component will move with the hot pressing head and apply downward pressure to the LED module placed on the workbench, firmly fix it on the workbench, and simultaneously drive the pusher to move, so that the pusher contacts the LED module, further stabilize the LED module, prevent the module from displacement during hot pressing, and ensure the accuracy of the welding position.

[0010] The present invention is further configured as follows: the passage control component includes a sliding sleeve and a connecting tube, the connecting tube is arranged at the top inside the sliding sleeve, the sliding sleeve is sleeved between the surfaces of the connecting tube and the injection tube, the injection tube and the connecting tube are both slidably provided with movable plates, a connecting rod is bolted between the opposite sides of the two movable plates, a fixed sleeve is sleeved on the surface of the connecting rod, and the fixed sleeve is connected to the sliding sleeve on the side close to the inner wall of the sliding sleeve, a circulation groove is opened inside the opposite side of the injection tube and the connecting tube, and the movable plate is used in conjunction with the circulation groove, and an air ring is connected between the tops of several connecting tubes.

[0011] By adopting the above technical scheme, a passage control component is set up. When the hot pressing head drives the sealing cover to move down and contact with the workbench, the sealing cover will move relative to the hot pressing head and drive the sleeve to move on the surface of the fixed rod, thereby driving the sliding sleeve to move on the surface of the injection pipe and the connecting pipe, and at the same time driving the fixed sleeve and the connecting rod to move up, so that the two movable plates respectively release the sealing of the injection pipe and the connecting pipe, thereby opening the flow groove inside the injection pipe and the connecting pipe, and the protective gas enters the sealing cover from the injection pipe. When the hot pressing head rises, the above components move in the opposite direction, the movable plate closes the flow groove, and the gas passage is closed. Through the design of the passage control component, automatic control of the gas passage is realized, which is closely coordinated with the movement of the hot pressing head, ensuring timely supply of protective gas during hot pressing welding, and timely closing of the gas passage after welding, thereby improving gas utilization efficiency and the degree of automation of the welding process.

[0012] The present invention is further configured as follows: a connecting ring is sleeved on the top of the sleeve surface and a connecting ring is sleeved on the bottom of the sliding sleeve surface, and a telescopic member is rotatably connected between the two connecting rings.

[0013] By adopting the above technical solution, through the setting of the telescopic parts and the connecting ring, the effect of driving the passage control component to open and close is achieved, and the passage control component can work reliably during the frequent up and down movement of the hot pressing head, thereby improving the reliability and durability of the device.

[0014] The present invention is further configured such that: the top moving plate is located at the bottom of the top circulation slot, and the bottom moving plate is located at the bottom of the bottom circulation slot.

[0015] By adopting the above technical solution, in the initial state, the top movable plate is at the bottom of the top circulation groove, and the bottom movable plate is at the bottom of the bottom circulation groove. At this time, the gas passage is closed. When the hot pressure head drives the sealing cover to move downward, the passage control component is activated, the movable plate moves upward to open the circulation groove, and the gas begins to flow; when the hot pressure head rises, the movable plate falls back to the initial position, closes the circulation groove, and clarifies the initial position of the movable plate, thereby ensuring the accuracy and stability of the gas passage control, avoiding accidental opening or closing of the gas passage due to inaccurate initial position of the movable plate, and ensuring the reliability of gas protection during welding.

[0016] The present invention is further configured as follows: a first return spring is arranged inside the sleeve, and the top of the first return spring is connected to the fixing rod.

[0017] By adopting the above technical solution, the first reset spring is set to provide power for resetting the sleeve and the passage control assembly, ensuring that the gas passage can be closed in time after the hot pressing welding is completed, avoiding gas leakage and waste, and simplifying the structural design of the device.

[0018] The present invention is further configured as follows: the pressure assembly includes two fixed plates, the fixed plates are bolted to both sides of the hot pressure head, a support rod passes through the interior of the fixed plate, and a pressure plate is bolted to the bottom of the support rod, the front and rear sides of the bottom of the pressure plate are bolted to pressure rods, a pressure spring is sleeved on the surface of the support rod, and the pressure spring is respectively connected to the pressure plate and the fixed plate on one side, a contact plate is slidably arranged inside the workbench, and a pushing member is arranged at the bottom of the contact plate, and the pushing member is used in conjunction with the pressure rod.

[0019] By adopting the above technical solution, a pressing component is set up. After the hot pressing head drives the sealing cover to move down and contact with the workbench, the hot pressing head will continue to move down and drive the pressing rod to enter the interior of the workbench and contact with the pushing member, so that the pressing plate will contact and apply pressure to the LED module mainboard to fix it on the workbench. As the pressing plate is pressed down, the contact plate will be pushed up by the pushing member, so that the contact plate contacts the bottom of the LED module mainboard. Therefore, the contact plate and the pressing plate relatively fix the LED module mainboard, thereby realizing double fixation of the LED module mainboard, ensuring the stability of the module during the hot pressing welding process, and improving the welding quality.

[0020] The present invention is further configured as follows: the pushing member includes a moving column, the moving column is slidably arranged inside the workbench, a shell is arranged inside the workbench, and a lifting plate is slidably arranged inside the shell, a lifting column is arranged on the top of the lifting plate, the top of the lifting column extends to the top of the shell and is bolted with a connecting plate, the top of the connecting plate is connected to the contact plate, the surface of the lifting column is sleeved with an elastic sleeve, and the top and bottom of the elastic sleeve are respectively connected to the shell and the lifting plate.

[0021] By adopting the above technical solution, a pushing member is set up. Since the interior of the shell and the connecting hole are filled with compressed gas, when the pressure rod pushes the movable column to move in the connecting hole, the gas in the connecting hole will be squeezed into the shell, causing the air pressure in the shell to increase, and pushing the lifting plate and the lifting column to move. At the same time, the contact plate is pushed up through the connecting plate, thereby realizing the linkage between the pressure rod and the contact plate and enhancing the fixing effect on the LED module mainboard.

[0022] The present invention is further configured as follows: a step groove is opened at the top of the workbench, and the pushing member is located inside the step groove; connecting holes are opened at the four corners of the workbench, and the flow holes are connected to the step groove; the shell is connected to the connecting hole through a pipe, and the movable column is slidably arranged inside the connecting hole.

[0023] By adopting the above technical solution, by setting the step groove, the processing position of the LED module mainboard is limited, and by setting the connecting hole, the movement of the movable column allows the gas to be transmitted to the lifting plate inside the shell, thereby realizing the linkage between the pressure rod and the contact plate.

[0024] The present invention is further configured as follows: a hollow support plate is arranged inside the connecting hole, and a guide column is bolted to the top of the hollow support plate, and the guide column is slidably arranged inside the moving column, a second return spring is sleeved on the surface of the guide column, and the top and bottom of the second return spring are respectively connected to the moving column and the hollow support plate.

[0025] By adopting the above technical solution, during the sliding process of the moving column, it slides along the surface of the guide column inside the connecting hole, and the second return spring provides a return force for the moving column. When the pressure rod no longer pushes the moving column, the moving column is reset to the initial position under the action of the second return spring. Through the arrangement of the hollow support plate, the guide column and the second return spring, the stable sliding of the moving column in the connecting hole is guaranteed, and a return function is provided for it, so that the pushing member can work reliably multiple times during the hot pressing welding process.

[0026] The present invention is further configured as follows: a sealing ring is arranged at the bottom of the sealing cover, and the sealing ring is used in conjunction with the workbench, and a Y-shaped notch is arranged at the bottom of the sealing ring.

[0027] By adopting the above technical solution, the sealing performance between the sealing cover and the workbench is enhanced through the design of the sealing ring and its Y-shaped groove, the integrity of the gas protection space is ensured, the gas protection effect is improved, and thus the welding quality is improved.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. By setting up a protective structure, the sealing cover is slidably sleeved on the surface of the hot pressing head. When the hot pressing head moves down, the sealing ring set at the bottom of the sealing cover can quickly fit closely with the workbench to form a sealed space, effectively blocking the outside air from entering the welding area and preventing the solder joint from oxidizing. The passage control component can accurately control the passage of the protective gas according to the position of the hot pressing head. When the hot pressing head moves down to a suitable position, the protective gas can smoothly enter the welding area in the sealing cover through the injection pipe; when the hot pressing head rises, the passage is automatically closed to avoid gas waste, while ensuring the timeliness and accuracy of gas protection;

[0030] 2. By setting up a pressing component, during hot pressing welding, the pressing component will move along with the hot pressing head and apply downward pressure to the LED module placed on the workbench, firmly fix it on the workbench, and simultaneously drive the pushing member to move, so that the pushing member contacts the LED module, further stabilize the LED module, prevent the module from shifting during the hot pressing process, and ensure the accuracy of the welding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the connection between the protection structure and the thermal pressure head of the present invention;

[0033] Figure 3 It is a schematic diagram of the connection between the passage control component and the sleeve of the present invention;

[0034] Figure 4 It is a schematic diagram of the connection between the sleeve and the fixing rod of the present invention;

[0035] Figure 5 It is a schematic diagram of the connection between the pressing assembly and the workbench of the present invention;

[0036] Figure 6 It is a schematic diagram of the connection between the pusher and the workbench of the present invention;

[0037] Figure 7 The present invention Figure 6 Enlarged schematic diagram at point A in the middle.

[0038] Figure numerals: 1, processing table; 2, workbench; 3, bracket; 4, hydraulic cylinder; 5, hot pressing head; 6, protective structure; 61, sealing cover; 62, pressing assembly; 621, fixing plate; 622, support rod; 623, pressing plate; 624, pressing rod; 625, pressing spring; 626, contact plate; 627, pushing member; 627a, moving column; 627b, housing; 627c, lifting plate; 627d, lifting column; 627e, connecting plate; 6 27f, elastic sleeve; 63, sleeve; 64, fixed rod; 65, injection pipe; 66, passage control assembly; 661, sliding sleeve; 662, movable plate; 663, connecting rod; 664, fixed sleeve; 665, circulation groove; 666, connecting pipe; 7, air ring; 8, connecting ring; 9, telescopic member; 10, first return spring; 11, step groove; 12, connecting hole; 13, hollow support plate; 14, guide column; 15, second return spring; 16, sealing ring. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] Embodiment 1:

[0041] refer to Figure 1-4 A hot pressing welding device for processing LED modules comprises a processing table 1, a workbench 2 is slidably arranged on the top of the processing table 1, a bracket 3 is bolted between the two sides of the processing table 1, a hydraulic cylinder 4 is penetrated inside the bracket 3, and a hot pressing head 5 is bolted to the bottom of the hydraulic cylinder 4, and a protective structure 6 is sleeved on the surface of the hot pressing head 5;

[0042] The protective structure 6 includes a sealing cover 61, which is slidably sleeved on the surface of the hot pressing head 5. A sleeve 63 is provided on the top of the surface of the sealing cover 61 in an annular shape. A fixing rod 64 is slidably provided inside the sleeve 63. The fixing rod 64 is bolted to the output end of the hydraulic cylinder 4 on one side of the fixing rod 64. The surface of the sealing cover 61 is annularly connected to an injection pipe 65. The surface of the injection pipe 65 is sleeved with a passage control component 66, and the passage control component 66 is used in conjunction with the sleeve 63. By setting the protective structure 6, the sealing cover 61 is slidably sleeved on the surface of the hot pressing head 5. During the downward movement of the hot pressing head 5, the sealing ring 16 arranged at the bottom of the sealing cover 61 can quickly fit tightly with the workbench 2 to form a sealed space, effectively blocking external air from entering the welding area and preventing oxidation of the weld. The passage control component 66 can accurately control the passage of the protective gas according to the position of the hot pressing head 5. When the hot pressing head 5 moves down to a suitable position, the protective gas can smoothly pass through the injection pipe 65 into the welding area in the sealing cover 61; when the hot pressing head 5 rises, the passage is automatically closed to avoid gas waste, while ensuring the timeliness and accuracy of gas protection.

[0043] like Figure 3 As shown, the passage control component 66 includes a sliding sleeve 661 and a connecting pipe 666. The connecting pipe 666 is arranged at the top inside the sliding sleeve 661. The sliding sleeve 661 is sleeved between the surfaces of the connecting pipe 666 and the injection pipe 65. The injection pipe 65 and the connecting pipe 666 are both slidably provided with a moving plate 662. A connecting rod 663 is bolted between the opposite sides of the two moving plates 662. A fixed sleeve 664 is sleeved on the surface of the connecting rod 663, and the fixed sleeve 664 is connected to the sliding sleeve 661 on the side close to the inner wall of the sliding sleeve 661. A circulation groove 665 is opened inside the opposite side of the injection pipe 65 and the connecting pipe 666, and the moving plate 662 is used in conjunction with the circulation groove 665. The tops of several connecting pipes 666 are connected with an air ring 7. By setting the passage control component 66, when the hot pressing head 5 drives the sealing cover 61 to move down and contact with the workbench 2, the sealing cover 61 will It moves relative to the hot pressing head 5 and drives the sleeve 63 to move on the surface of the fixed rod 64, thereby driving the sliding sleeve 661 to move on the surfaces of the injection pipe 65 and the connecting pipe 666, and at the same time drives the fixed sleeve 664 and the connecting rod 663 to move upward, so that the two movable plates 662 respectively release the sealing of the injection pipe 65 and the connecting pipe 666, thereby opening the flow groove 665 inside the injection pipe 65 and the connecting pipe 666, and the protective gas enters the sealing cover 61 from the injection pipe 65. When the hot pressing head 5 rises, the above-mentioned components move in the opposite direction, the movable plate 662 closes the flow groove 665, and the gas passage is closed. Through the design of the passage control component 66, automatic control of the gas passage is realized, which is closely coordinated with the movement of the hot pressing head 5, ensuring timely supply of protective gas during hot pressing welding, and timely closing of the gas passage after welding, thereby improving the gas use efficiency and the degree of automation of the welding process.

[0044] like Figure 3 As shown, the top of the sleeve 63 surface and the bottom of the sliding sleeve 661 surface are both sleeved with a connecting ring 8, and a telescopic member 9 is rotatably connected between the two connecting rings 8. Through the setting of the telescopic member 9 and the connecting ring 8, the effect of driving the passage control component 66 to open and close is achieved, and the passage control component 66 can work reliably during the frequent up and down movements of the hot pressing head 5, thereby improving the reliability and durability of the device.

[0045] like Figure 3 As shown, the top movable plate 662 is at the bottom of the top circulation groove 665, and the bottom movable plate 662 is at the bottom of the bottom circulation groove 665. In the initial state, the top movable plate 662 is at the bottom of the top circulation groove 665, and the bottom movable plate 662 is at the bottom of the bottom circulation groove 665. At this time, the gas passage is closed. When the hot pressing head 5 drives the sealing cover 61 to move downward, the passage control component 66 is activated, and the movable plate 662 moves upward to open the circulation groove 665, and the gas begins to circulate; when the hot pressing head 5 rises, the movable plate 662 falls back to the initial position, closes the circulation groove 665, and clarifies the initial position of the movable plate 662, thereby ensuring the accuracy and stability of the gas passage control, avoiding the gas passage from being opened or closed by mistake due to the inaccurate initial position of the movable plate 662, and ensuring the reliability of gas protection during welding.

[0046] like Figure 4 As shown, a first return spring 10 is arranged inside the sleeve 63, and the top of the first return spring 10 is connected to the fixing rod 64. The setting of the first return spring 10 provides power for resetting the sleeve 63 and the passage control assembly 66, ensuring that the gas passage can be closed in time after the hot pressing welding is completed, avoiding gas leakage and waste, and simplifying the structural design of the device.

[0047] like Figure 2 As shown, a sealing ring 16 is provided at the bottom of the sealing cover 61, and the sealing ring 16 is used in conjunction with the workbench 2. A Y-shaped groove is provided at the bottom of the sealing ring 16. Through the design of the sealing ring 16 and its Y-shaped groove, the sealing performance between the sealing cover 61 and the workbench 2 is enhanced, the integrity of the gas protection space is ensured, the gas protection effect is improved, and thus the welding quality is improved.

[0048] Brief description of the use process: Place the LED module mainboard on the workbench 2, then slide the workbench 2 to the bottom of the sealing cover 61, and start the hot pressing welding program. The hydraulic cylinder 4 drives the hot pressing head 5 to move downward, and the sealing cover 61 moves downward synchronously with the hot pressing head 5. During the downward movement of the sealing cover 61, since a sealing ring 16 with a Y-shaped notch is provided at the bottom of the sealing cover 61, when the sealing cover 61 approaches the workbench 2, the sealing ring 16 first contacts the workbench 2. As the hot pressing head 5 continues to move downward, the sealing cover 61 is resisted by the workbench 2 and begins to slide upward relative to the hot pressing head 5, compressing the first A return spring 10, the sealing cover 61 slides upward relative to the hot pressing head 5, and drives the sleeve 63 to move upward on the surface of the fixed rod 64. The sleeve 63 is connected to the telescopic member 9 through the connecting ring 8. The telescopic member 9 then drives the sliding sleeve 661 to move upward on the surface of the injection pipe 65 and the connecting pipe 666. When the sliding sleeve 661 moves upward, it drives the fixed sleeve 664 and the connecting rod 663 to move upward, so that the two moving plates 662 move upward from the bottom of the flow groove 665 of the injection pipe 65 and the connecting pipe 666 respectively, and the sealing of the flow groove 665 is released. At this time, the protective gas enters the connecting pipe 666 from the gas ring 7. , and then enters the injection pipe 65 through the opened flow slot 665, and finally enters the sealing cover 61 through the injection pipe 65. As the protective gas is continuously filled, the air in the sealing cover 61 is gradually discharged from the valve structure preset at the top of the sealing cover 61 to form a gas protection space, creating an oxygen-free or low-oxygen environment for hot pressing welding. In the environment where the protective gas fills the sealing cover 61, the hot pressing head 5 continues to move down to the working position to perform hot pressing welding on the LED module motherboard on the workbench 2. During the entire welding process, the protective gas continues to enter the sealing cover 61 through the passage control component 66 to maintain the gas protection state. To prevent oxidation of the weld spot and ensure welding quality, after the hot pressing welding is completed, the hydraulic cylinder 4 drives the hot pressing head 5 to rise. As the hot pressing head 5 rises, the sealing cover 61 slides downward relative to the hot pressing head 5 and resets under the action of the first reset spring 10, and the sleeve 63, sliding sleeve 661 and other components also move in the opposite direction. The movable plate 662 moves downward driven by the fixed sleeve 664 and the connecting rod 663, and the flow groove 665 of the injection pipe 65 and the connecting pipe 666 is re-closed. The gas passage is closed, the protective gas supply is stopped, and the sealing cover 61 gradually leaves the workbench 2 and returns to the initial state, preparing for the next hot pressing welding operation.

[0049] Embodiment 2:

[0050] refer to Figure 5-7, including a protective structure 6, the protective structure 6 includes a sealing cover 61, the sealing cover 61 is slidably sleeved on the surface of the hot pressing head 5, a pressing component 62 is arranged inside the sealing cover 61, and the pressing component 62 is connected to the hot pressing head 5 on one side thereof. By setting the pressing component 62, during hot pressing welding, the pressing component 62 will move with the hot pressing head 5 and apply downward pressure to the LED module placed on the workbench 2, firmly fix it on the workbench 2, and simultaneously drive the pushing member 627 to move, so that the pushing member 627 contacts with the LED module, further stabilizes the LED module, prevents the module from displacement during the hot pressing process, and ensures the accuracy of the welding position.

[0051] like Figure 5 As shown, the pressing assembly 62 includes two fixed plates 621, which are bolted to both sides of the hot pressing head 5, a support rod 622 is passed through the interior of the fixed plate 621, and a pressing plate 623 is bolted to the bottom of the support rod 622, and a pressing rod 624 is bolted to the front and rear sides of the bottom of the pressing plate 623, a pressing spring 625 is sleeved on the surface of the support rod 622, and the side of the pressing spring 625 close to the pressing plate 623 and the fixed plate 621 is respectively connected to the two, a contact plate 626 is slidably provided inside the workbench 2, and a pusher 627 is provided at the bottom of the contact plate 626, and the pusher 627 is used in conjunction with the pressing rod 624. By setting the pressing assembly 62 After the hot pressing head 5 drives the sealing cover 61 to move down and contact with the workbench 2, the hot pressing head 5 will continue to move down and drive the pressure rod 624 to enter the interior of the workbench 2 and contact with the pushing member 627, so that the pressure plate 623 will contact and apply pressure to the LED module mainboard to fix it on the workbench 2. As the pressure plate 623 is pressed down, the pushing member 627 will push the contact plate 626 up, so that the contact plate 626 contacts the bottom of the LED module mainboard. Therefore, the contact plate 626 and the pressure plate 623 relatively fix the LED module mainboard, realizing double fixation of the LED module mainboard, ensuring the stability of the module during the hot pressing welding process, and improving the welding quality.

[0052] like Figure 6As shown, the pusher 627 includes a moving column 627a, which is slidably arranged inside the workbench 2, a shell 627b is arranged inside the workbench 2, and a lifting plate 627c is slidably arranged inside the shell 627b, and a lifting column 627d is arranged on the top of the lifting plate 627c, and the top of the lifting column 627d extends to the top of the shell 627b and is bolted with a connecting plate 627e, and the top of the connecting plate 627e is connected to the contact plate 626, and the surface of the lifting column 627d is sleeved with an elastic sleeve 627f, and the top and bottom of the elastic sleeve 627f are respectively connected to the shell 627b. 27b is connected to the lifting plate 627c. By setting a pushing member 627, since the inside of the shell 627b and the connecting hole 12 are filled with compressed gas, when the pressure rod 624 pushes the moving column 627a to move in the connecting hole 12, the gas in the connecting hole 12 will be squeezed into the shell 627b, so that the air pressure in the shell 627b increases, and the lifting plate 627c and the lifting column 627d are pushed to move. At the same time, the contact plate 626 is pushed upward through the connecting plate 627e, thereby realizing the linkage between the pressure rod 624 and the contact plate 626, and enhancing the fixing effect on the LED module motherboard.

[0053] like Figure 6 As shown, a step groove 11 is provided at the top of the interior of the workbench 2, and the pushing member 627 is located inside the step groove 11. Connecting holes 12 are provided at the four corners inside the workbench 2, and the flow holes are connected to the step groove 11. The shell 627b is connected to the connecting hole 12 through a pipeline, and the movable column 627a is slidably arranged inside the connecting hole 12. By setting the step groove 11, the processing position of the LED module mainboard is limited. By setting the connecting hole 12, the movement of the movable column 627a allows the gas to be transmitted to the lifting plate 627c inside the shell 627b, thereby realizing the linkage between the pressure rod 624 and the contact plate 626.

[0054] like Figure 7 As shown, a hollow support plate 13 is provided inside the connecting hole 12, and a guide column 14 is bolted to the top of the hollow support plate 13, and the guide column 14 is slidably arranged inside the moving column 627a, and a second return spring 15 is sleeved on the surface of the guide column 14, and the top and bottom of the second return spring 15 are respectively connected to the moving column 627a and the hollow support plate 13. During the sliding process of the moving column 627a, it slides inside the connecting hole 12 along the surface of the guide column 14, and the second return spring 15 provides a return force for the moving column 627a. When the pressure rod 624 no longer pushes the moving column 627a, the moving column 627a is reset to the initial position under the action of the second return spring 15. Through the arrangement of the hollow support plate 13, the guide column 14 and the second return spring 15, the stable sliding of the moving column 627a in the connecting hole 12 is guaranteed, and a return function is provided for it, so that the pushing member 627 can work reliably for many times during the hot pressing welding process.

[0055] Brief description of the use process: When the hot pressing head 5 drives the sealing cover 61 to move down and contact the workbench 2, the hot pressing head 5 continues to move down. At this time, the fixed plate 621 in the pressing assembly 62 drops together with the hot pressing head 5. The support rod 622 running through the inside of the fixed plate 621 moves downward under the drive of the fixed plate 621, and the pressing plate 623 bolted to the bottom of the support rod 622 approaches the LED module motherboard on the workbench 2. At the same time, the pressing rods 624 bolted to the front and rear sides of the bottom of the pressing plate 623 also move down together. As the hot pressing head 5 continues to move down, the pressing plate 623 contacts the LED module motherboard and, under the action of the pressing spring 625, The LED module mainboard applies downward pressure to fix it on the workbench 2. At this time, the pressure spring 625 is compressed to store elastic potential energy, and the pressure rod 624 continues to move downward, enters the interior of the workbench 2, and contacts the moving column 627a in the pusher 627. With the push of the pressure rod 624, the moving column 627a slides in the connecting hole 12 inside the workbench 2. Since the connecting hole 12 is connected to the shell 627b through a pipeline, and the connecting hole 12 and the shell 627b are filled with compressed gas, the sliding of the moving column 627a squeezes the gas in the connecting hole 12 into the shell 627b, so that the shell 627 b, the air pressure in the shell 627b increases, and the increased air pressure in the shell 627b pushes the lifting plate 627c to slide upward in the shell 627b, and the lifting column 627d on the top of the lifting plate 627c moves upward accordingly, and the lifting column 627d drives the contact plate 626 to rise through the connecting plate 627e, and the contact plate 626 gradually contacts the bottom of the LED module motherboard and applies an upward supporting force to it. At this time, the contact plate 626 and the pressure plate 623 relatively fix the LED module motherboard from the upper and lower sides to ensure that the module will not move during the hot pressing welding process. After the hot pressing welding is completed, the hot pressing head 5 rises, and the pressure rod 624 rises with the hot pressing head 5 , gradually leaving the moving column 627a, the moving column 627a is reset to the initial position along the surface of the guide column 14 under the action of the hollow support plate 13, the guide column 14 and the second reset spring 15 arranged in the connecting hole 12, and the air pressure in the connecting hole 12 returns to normal. At the same time, the air pressure in the shell 627b is also reduced as the gas flows back to the connecting hole 12, and the lifting plate 627c and the contact plate 626 move downward and reset under the action of the elastic sleeve 627f. Under the action of the elastic potential energy of the pressing spring 625, the pressing plate 623 returns to the initial position as the hot pressing head 5 rises, and the pressing assembly 62 is ready for the next hot pressing welding.

[0056] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A hot pressing welding device for LED module processing, comprising a processing table (1), characterized in that: A workbench (2) is slidably provided on the top of the processing table (1), a bracket (3) is bolted between the two sides of the processing table (1), a hydraulic cylinder (4) penetrates the interior of the bracket (3), and a hot pressing head (5) is bolted to the bottom of the hydraulic cylinder (4), and a protective structure (6) is sleeved on the surface of the hot pressing head (5); The protective structure (6) comprises a sealing cover (61), wherein the sealing cover (61) is slidably mounted on the surface of the hot pressing head (5), a pressing assembly (62) is arranged inside the sealing cover (61), and the pressing assembly (62) is connected to the hot pressing head (5) at a side close to the hot pressing head (5), a sleeve (63) is arranged in an annular shape on the top of the surface of the sealing cover (61), a fixing rod (64) is slidably mounted inside the sleeve (63), and the fixing rod (64) is bolted to the hydraulic cylinder (4) at a side close to the output end thereof, the surface of the sealing cover (61) is connected to an injection pipe (65) in an annular shape, a passage control assembly (66) is sleeved on the surface of the injection pipe (65), and the passage control assembly (66) is used in conjunction with the sleeve (63).

2. A hot pressing welding device for LED module processing according to claim 1, characterized in that: The passage control component (66) comprises a sliding sleeve (661) and a connecting pipe (666). The connecting pipe (666) is arranged at the top inside the sliding sleeve (661). The sliding sleeve (661) is sleeved between the surfaces of the connecting pipe (666) and the injection pipe (65). Moving plates (662) are slidably arranged inside the injection pipe (65) and the connecting pipe (666). A connecting rod (663) is bolted between the opposite sides of the two moving plates (662). A fixed sleeve (664) is sleeved on the surface of the connecting rod (663), and the fixed sleeve (664) is connected to the sliding sleeve (661) at a side close to the inner wall of the sliding sleeve. A circulation groove (665) is opened inside the opposite side of the injection pipe (65) and the connecting pipe (666), and the moving plate (662) is used in conjunction with the circulation groove (665). An air ring (7) is connected between the tops of a plurality of connecting pipes (666).

3. A hot pressing welding device for LED module processing according to claim 2, characterized in that: The top of the surface of the sleeve (63) and the bottom of the surface of the sliding sleeve (661) are both sleeved with a connecting ring (8), and a telescopic member (9) is rotatably connected between the two connecting rings (8).

4. The hot pressing welding device for LED module processing according to claim 2, characterized in that: The top moving plate (662) is located at the bottom of the top circulation slot (665), and the bottom moving plate (662) is located at the bottom of the bottom circulation slot (665).

5. The hot pressing welding device for LED module processing according to claim 1, characterized in that: A first return spring (10) is arranged inside the sleeve (63), and the top of the first return spring (10) is connected to the fixing rod (64).

6. The hot pressing welding device for LED module processing according to claim 1, characterized in that: The pressing assembly (62) comprises two fixed plates (621), the fixed plates (621) are bolted to the two sides of the hot pressing head (5), a support rod (622) passes through the interior of the fixed plate (621), and a pressing plate (623) is bolted to the bottom of the support rod (622), and a pressing rod (624) is bolted to the front and rear sides of the bottom of the pressing plate (623), a pressing spring (625) is sleeved on the surface of the support rod (622), and the side of the pressing spring (625) close to the pressing plate (623) and the fixed plate (621) is respectively connected to the two, a contact plate (626) is slidably arranged inside the workbench (2), and a pushing member (627) is arranged at the bottom of the contact plate (626), and the pushing member (627) is used in conjunction with the pressing rod (624).

7. A hot pressing welding device for LED module processing according to claim 6, characterized in that: The pushing member (627) includes a movable column (627a), and the movable column (627a) is slidably arranged inside the workbench (2). A shell (627b) is arranged inside the workbench (2), and a lifting plate (627c) is slidably arranged inside the shell (627b). A lifting column (627d) is arranged on the top of the lifting plate (627c). The top of the lifting column (627d) extends to the top of the shell (627b) and is bolted with a connecting plate (627e). The top of the connecting plate (627e) is connected to the contact plate (626). The surface of the lifting column (627d) is sleeved with an elastic sleeve (627f), and the top and bottom of the elastic sleeve (627f) are respectively connected to the shell (627b) and the lifting plate (627c).

8. The hot pressing welding device for LED module processing according to claim 7, characterized in that: A step groove (11) is provided at the top of the workbench (2), and the pushing member (627) is located inside the step groove (11). Connecting holes (12) are provided at the four corners inside the workbench (2), and the flow holes are connected to the step groove (11). The shell (627b) is connected to the connecting hole (12) through a pipeline, and the movable column (627a) is slidably arranged inside the connecting hole (12).

9. A hot pressing welding device for LED module processing according to claim 8, characterized in that: A hollow support plate (13) is arranged inside the connecting hole (12), and a guide column (14) is bolted to the top of the hollow support plate (13), and the guide column (14) is slidably arranged inside the moving column (627a), and a second return spring (15) is sleeved on the surface of the guide column (14), and the top and bottom of the second return spring (15) are respectively connected to the moving column (627a) and the hollow support plate (13).

10. The hot pressing welding device for LED module processing according to claim 1, characterized in that: A sealing ring (16) is provided at the bottom of the sealing cover (61), and the sealing ring (16) is used in conjunction with the workbench (2), and a Y-shaped notch is provided at the bottom of the sealing ring (16).

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