A corner protection device for photovoltaic module packaging

Abstract

The present invention relates to the field of packaging equipment, specifically to an upper corner protection device for packaging photovoltaic modules. It includes a conveyor, an upper corner protection mechanism and a corner protection sticking mechanism; the conveyor is used to convey packaging boxes horizontally; the upper corner protection mechanism is distributed in four groups around the conveyor, including a support frame, a material box arranged on the support frame and having a push port at the bottom end, a propulsion assembly for tensioning and pushing a plurality of L-shaped corner protectors placed in the material box, a lifting device vertically arranged on the support frame, a lifting plate arranged at the bottom end of the lifting device, an L-shaped push plate vertically arranged on the lifting plate and aligned with the push port, and a glue spraying mechanism that sprays glue toward the inner side of the L-shaped corner protector when the push plate pushes up the front end L-shaped corner protector on the inner side of the material box. The glue spraying mechanism includes a material blocking column, a glue outlet pipe and a glue feeding assembly. When the present invention adds the corner protector, the corner protector is directly glued to the packaging box, and the packaging box is further conveyed to the strapping machine station for strapping by the conveyor, saving time and improving the efficiency of the production line.

Description

Technical Field

[0001] The present invention relates to the field of packaging equipment, in particular to an upper corner protection device for packaging photovoltaic components. Background Art

[0002] After production, photovoltaic modules need to be packaged for subsequent transportation. The modules are stacked and then packaged. The packaging process includes applying corner protectors, taping, boxing, and laminating. Applying corner protectors can reduce damage to the packaging boxes during transportation and storage.

[0003] Chinese Patent Publication No. CN117246607A discloses a corner guard mechanism for photovoltaic module packaging and a photovoltaic module packaging line. The mechanism comprises a vertical corner guard buffering device, a corner guard gripper, and a first drive device. The first drive device is configured to drive the corner guard gripper in an X-direction, enabling the gripper to move relative to the vertical corner guard buffering device and the side edge of the photovoltaic module packaging box. The first drive device is configured to drive the corner guard gripper in a Y-direction, enabling the gripper to grasp the corner guard within the vertical corner guard buffering device and attach the corner guard to the side edge of the photovoltaic module packaging box. After grasping the corner guard, the gripper can directly align the long vertical corner guard with the side edge of the photovoltaic module packaging box through X- and Y-direction motions without twisting. This high degree of automation saves manpower and improves packaging efficiency.

[0004] However, the above technical solution has the following shortcomings: after the corner guards are installed, the clamping state needs to be maintained stationary, and then the tape is applied by a tape machine, resulting in low efficiency of the entire production line. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and propose a corner protection device for packaging photovoltaic modules. When installing the corner protectors, the corner protectors are directly glued to the packaging box, and the packaging box is further transported by a conveyor to the subsequent strapping machine station for strapping, which saves time and improves the efficiency of the production line.

[0006] The technical solution of the present invention is a corner protection device for packaging photovoltaic modules, comprising a conveyor, an upper corner protection mechanism and a corner protection sticking mechanism; the conveyor is used to horizontally transport packaging boxes; the upper corner protection mechanism is distributed in four groups around the conveyor, comprising a support frame, a material box provided on the support frame and having a material pushing port at the bottom end, a pushing assembly for tensioning and pushing a plurality of L-shaped corner protections placed in the material box, a lifting device vertically provided on the support frame, a lifting plate provided at the bottom end of the lifting device, a lifting plate vertically provided on the lifting plate and aligned with the material pushing port The glue sticking mechanism is arranged in a one-to-one correspondence with the upper corner guard mechanism, and is used for clamping and pushing the L-shaped corner guard forward.

[0007] Preferably, the glue delivery assembly includes a glue barrel arranged on a support frame, a fixed column arranged on a lifting plate, a guide rod arranged on the fixed column, a piston cylinder connected to the glue outlet pipe, a piston with a sliding seal arranged in the piston barrel, and a piston rod connected to the piston, the guide rod has a slide for sliding the piston rod, the slide includes a vertical channel and an inclined channel inclined outwardly and connected to the top of the vertical channel, the piston barrel has a feed section and a discharge section, the feed section is provided with a one-way valve 1 for one-way glue supply to the piston barrel, the discharge section is provided with a one-way valve 2 for one-way glue supply to the glue outlet pipe, and a glue feed pipe is connected between the glue barrel and the piston barrel feed section.

[0008] Preferably, two stops are provided on the piston rod, and the two stops are respectively located on both sides of the slideway.

[0009] Preferably, two grooves are provided on the right-angled surface of the material blocking column, and the glue outlet pipe is a "Y"-shaped pipe having a glue inlet end and two glue outlet ends.

[0010] Preferably, the propulsion assembly includes a bracket arranged on the support frame, a fixed cylinder arranged horizontally on the bracket, a sliding rod arranged slidably on the fixed cylinder, a pushing column arranged vertically at the front end of the sliding rod, and a spring arranged on the outer periphery of the fixed cylinder and the sliding rod and connected to the pushing column and the bracket at both ends respectively. The front end of the pushing column has a vertically distributed "V"-shaped surface.

[0011] Preferably, a connecting rod is provided on the pushing column, and a handle is provided at the outer end of the connecting rod.

[0012] Preferably, the corner guard sticking mechanism includes a mounting frame arranged on the support frame, a telescopic device horizontally arranged on the mounting frame, and a pushing mechanism connected to the front end of the telescopic device, and the pushing mechanism has a clamping space for clamping the L-shaped corner guard pushed by the pushing plate.

[0013] Preferably, the pushing mechanism includes an "L"-shaped push plate arranged at the front end of the telescopic device and two groups of clamping assemblies symmetrically arranged on the push plate, the clamping assembly includes a boss arranged at the end of the push plate, a rotating shaft rotatably arranged at the boss, a rotating plate arranged on the rotating shaft and having a notch, a sliding column slidably arranged on the rotating plate, a splint and an end plate respectively connected to the two ends of the sliding column, a spring 2 which is sleeved on the outer periphery of the sliding column and connected to the rotating plate and the end plate at both ends respectively, a torsion spring which is sleeved on the outer periphery of the rotating shaft and tensions the rotating plate outward, and a limit plate which is arranged at the outer end of the push plate and limits the outward rotation range of the rotating plate, the clamping space is located between the push plate and the splints at both ends, and the bottom end of the splint has a guide slope.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: when installing the corner guard, the present invention directly sticks the L-shaped corner guard to the packaging box, and uses a conveyor to continue to transport the packaging box to the subsequent strapping machine station for strapping, which saves time and improves the efficiency of the production line. When the lifting device drives the lifting plate to move up, on the one hand, the pushing plate is used to push the L-shaped corner guard at the front end of the material box upward, and on the other hand, the glue spraying mechanism is used to spray glue on the inner side of the L-shaped corner guard that moves upward. The corner guard sticking mechanism clamps the L-shaped corner guard with glue and pushes it forward to be bonded to the edge of the packaging box. After the corner guard sticking mechanism detaches from the L-shaped corner guard, the conveyor continues to transport the packaging box, and the strapping machine uses the strapping tape to further strap the L-shaped corner guard on the packaging box. The strapping tape has a large strapping range, is more secure in strapping, and has higher production line efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A partial structural cross-sectional view;

[0017] Figure 3 It is a partial structural cross-sectional view of the upward and forward-pushing L-shaped corner guard;

[0018] Figure 4 for Figure 3 A magnified view of the structure at point A;

[0019] Figure 5 Schematic diagram of the structure of the material box;

[0020] Figure 6 A cross-sectional view of the local structure of the push plate and the clamping plate clamping the L-shaped corner guard.

[0021] Figure 1: Conveyor; 2: Frame; 3: Slide rail; 4: Motor; 5: Screw; 6: Support frame; 7: Bracket; 8: Material box; 801: Pushing port; 9: Pushing column; 10: Fixed cylinder; 11: Slide bar; 12: Spring 1; 13: Connecting rod; 14: Handle; 15: Lifting device; 16: Lifting plate; 17: Pushing plate; 18: Stopping column; 181: Groove; 19: Fixed column; 20: Guide rod; 201: Slideway; 21: Movable Plug rod; 211, stopper; 22, piston; 23, piston cylinder; 231, one-way valve 1; 232, one-way valve 2; 24, rubber inlet hose; 25, rubber barrel; 26, rubber outlet hose; 27, mounting bracket; 28, telescopic device; 29, push plate; 30, sliding rod; 31, splint; 311, guide slope; 32, sliding column; 33, end plate; 34, spring 2; 35, rotating plate; 36, rotating shaft; 37, boss; 38, torsion spring; 39, limit plate. DETAILED DESCRIPTION

[0022] Example 1, as Figures 1-6 As shown, the present embodiment proposes an upper corner protection device for packaging photovoltaic modules, comprising a conveyor 1, an upper corner protection mechanism and a corner protection adhesive mechanism.

[0023] The conveyor 1 is used for horizontally conveying packaging boxes. The packaging boxes are rectangular parallelepiped structures with four vertical ridges on the outer periphery.

[0024] Four sets of upper corner guards are distributed around conveyor 1, two on either side of the width of conveyor 1. These four sets are used to install L-shaped corner guards along the four edges of the outer edges of the packaging box along an inclined direction. The upper corner guard mechanism includes a support frame 6, a magazine 8 mounted on the support frame 6 and having a push port 801 at its bottom end, a push assembly that tensions and pushes the multiple L-shaped corner guards placed in the magazine 8 into place, a lifting device 15 vertically mounted on the support frame 6, a lifting plate 16 at the bottom end of the lifting device 15, an L-shaped push plate 17 vertically mounted on the lifting plate 16 and aligned with the push port 801, and a glue spraying mechanism that sprays glue onto the inner surface of the L-shaped corner guard when the push plate 17 pushes the front end of the L-shaped corner guard upward. The push plate 17 is an L-shaped plate structure that can push each L-shaped corner guard upward at a time. The lifting device 15 can be a pneumatic or hydraulic cylinder. The rear end and top end of the magazine 8 are open, and a plurality of L-shaped corner guards are pre-placed horizontally in the magazine 8 and elastically tensioned by the propulsion assembly. The top end of the push plate 17 faces the frontmost L-shaped corner guard in the magazine 8 and can only push the frontmost L-shaped corner guard upward.

[0025] like Figure 2-Figure 4As shown, the glue spraying mechanism includes a material blocking column 18 arranged at the front end of the inner side of the material box 8, a glue outlet pipe 26 that runs through the material blocking column 18, and a glue feeding assembly that feeds glue to the glue outlet pipe 26. The material blocking column 18 is a right-angled triangular prism structure, and a groove 181 is provided on the right-angle surface of the material blocking column 18, specifically, a groove 181 is provided at each of the two surfaces, and the glue outlet pipe 26 is a "Y"-shaped pipe with a glue inlet end and two glue outlet ends, and the glue outlet end of the glue outlet pipe 26 is located at the groove 181. The glue feeding assembly supplies glue to the glue outlet pipe 26, and the glue is output from the glue outlet pipe 26 to the inner side of the L-shaped corner guard. Because the material blocking column 18 has the groove 181, the glue is located inside the groove 181, and when the L-shaped corner guard sprayed with glue moves upward, the glue will not adhere to the material blocking column 18.

[0026] The glue delivery assembly includes a glue barrel 25 mounted on the support frame 6, a fixed column 19 mounted on the lifting plate 16, a guide rod 20 mounted on the fixed column 19, a piston cylinder 23 connected to a glue outlet pipe 26, a piston 22 slidingly and sealably disposed within the piston cylinder 23, and a piston rod 21 connected to the piston 22. The top of the glue barrel 25 has a feeding plug and a vent. Opening the feeding plug allows glue to be added to the glue barrel 25. A heating pipe can be installed inside the glue barrel 25 to heat the glue and prevent it from solidifying. The guide rod 20 has a slideway 201 for the piston rod 21 to slide. The slideway 201 includes a vertical path and an inclined path that is inclined outward and connected to the top of the vertical path. The piston cylinder 23 has a feed section and a discharge section. The feed section is provided with a one-way valve 231 for one-way glue supply to the piston cylinder 23. The discharge section is provided with a one-way valve 232 for one-way glue supply to the glue outlet pipe 26. A glue feed pipe 24 is connected between the glue barrel 25 and the feed section of the piston cylinder 23.

[0027] When the lifting plate 16 moves upward, the guide rod 20 is driven upward by the fixed column 19. The guide rod 20 gradually pushes the piston rod 21 inward through the inclined path of the slideway 201. The piston rod 21 drives the piston 22 inward. At this time, the one-way valve 1 231 closes and the one-way valve 2 232 opens. The piston 22 squeezes the glue in the piston cylinder 23 into the glue outlet pipe 26, from which it is discharged onto the inner side of the L-shaped corner guard. When the piston rod 21 moves into the vertical path of the slideway 201, the glue outlet pipe 26 stops spraying glue to prevent glue from being sprayed onto the push plate 17. When the lifting plate 16 moves downward, the guide rod 20 moves downward, the piston rod 21 slides from the vertical path of the slideway 201 to the inclined path, and the piston 22 moves outward. The one-way valve 1 231 opens and the one-way valve 2 232 closes. The glue is then drawn from the glue barrel 25 into the piston cylinder 23 through the glue inlet pipe 24, ready for the next glue spraying process.

[0028] like Figure 4 As shown, two stops 211 are provided on the piston rod 21 , and the two stops 211 are respectively located on both sides of the slide 201 , so that the piston rod 21 can slide effectively along the slide 201 without being separated from the guide rod 20 .

[0029] like Figure 1 and Figure 2 As shown, the corner guard gluing mechanism corresponds to the upper corner guard mechanism, and is used to clamp and push the L-shaped corner guard forward. When the push plate 17 pushes the front-most L-shaped corner guard upward in the magazine 8, it is clamped by the corner guard gluing mechanism. The corner guard gluing mechanism then pushes the L-shaped corner guard forward to the side edge of the packaging box, where it is bonded to the packaging box using the glue on the inside of the L-shaped corner guard. The time the corner guard gluing mechanism keeps the L-shaped corner guard in contact with the packaging box is short, as long as the L-shaped corner guard is glued to the packaging box.

[0030] In this embodiment, when installing the corner guard, the L-shaped corner guard is directly glued to the packaging box, and the conveyor 1 is used to continue to transport the packaging box to the strapping machine station for strapping, which saves time and improves the efficiency of the production line. When the lifting device 15 drives the lifting plate 16 to move upward, on the one hand, the pushing plate 17 is used to push the L-shaped corner guard at the front end of the material box 8 upward, and on the other hand, the glue spraying mechanism is used to spray glue on the inner side of the L-shaped corner guard that moves upward. The L-shaped corner guard can be clamped on the corner guard gluing mechanism, and the corner guard gluing mechanism pushes the L-shaped corner guard with glue forward and adheres it to the edge of the packaging box. After the corner guard gluing mechanism is detached from the L-shaped corner guard, the conveyor 1 continues to transport the packaging box, and the strapping machine uses the strapping tape to further strap the L-shaped corner guard on the packaging box. The strapping tape has a large strapping range, the strapping is more secure, and the production line efficiency is higher.

[0031] Example 2, as Figures 1-6 As shown, this embodiment proposes a corner guard device for packaging photovoltaic modules. Compared with the first embodiment, in this embodiment, the propulsion assembly includes a bracket 7 arranged on the support frame 6, a fixed cylinder 10 arranged horizontally on the bracket 7, a slide rod 11 slidably arranged on the fixed cylinder 10, a push column 9 vertically arranged at the front end of the slide rod 11, and a spring 12 sleeved on the outer periphery of the fixed cylinder 10 and the slide rod 11 and connected to the push column 9 and the bracket 7 at both ends. The front end of the push column 9 has a vertically distributed "V"-shaped surface, which can adaptively push forward multiple L-shaped corner guards that are placed in a close relationship. When the push plate 17 pushes the frontmost L-shaped corner guard upward, the push plate 17 moves down and resets, and the spring 12 will push the push column 9 forward, and the push column 9 pushes the remaining L-shaped corner guards forward to achieve a single feeding of the L-shaped corner guards, so that the push plate 17 can be used to load the materials next time.

[0032] In addition, the push column 9 is also provided with a connecting rod 13, and a handle 14 is provided at the outer end of the connecting rod 13. By pulling the handle 14 outward, the connecting rod 13 can be driven to move outward, and the connecting rod 13 drives the push column 9 to move outward, compressing the spring 12. At this time, the L-shaped corner guard can be added to the material box 8.

[0033] In this embodiment, the pushing assembly can push the distance of one L-shaped corner guard at a time to replenish the L-shaped corner guard pushed upward for the pushing plate 17, thereby pushing one L-shaped corner guard upward each time.

[0034] Example 3, as Figures 1-6 As shown, this embodiment proposes a corner guard device for packaging photovoltaic modules. Compared with the first embodiment, in this embodiment, the corner guard mechanism includes a mounting frame 27 arranged on the support frame 6, a telescopic device 28 horizontally arranged on the mounting frame 27, and a pushing mechanism connected to the front end of the telescopic device 28. The telescopic device 28 can adopt an air cylinder, an oil cylinder, or an electric push rod. The pushing mechanism has a clamping space for clamping the L-shaped corner guard pushed up by the push plate 17. The mounting frame 27 includes a vertical rod portion and an inverted U-shaped plate portion connected to the bottom end of the vertical rod portion. The inverted U-shaped plate portion is connected to the top of the material box 8 and blocks the second L-shaped corner guard at the front end of the inner side of the material box 8, so that the push plate 17 can only push up one L-shaped corner guard at a time.

[0035] like Figure 3 and Figure 6 As shown, the pushing mechanism includes an L-shaped push plate 29 mounted at the front end of the telescopic mechanism 28 and two sets of clamping assemblies symmetrically mounted on the push plate 29. A sliding rod 30 is horizontally mounted on the push plate 29 and slidably connected to the mounting bracket 27. The clamping assembly includes a boss 37 at the end of the push plate 29, a rotating shaft 36 rotatably mounted on the boss 37, a rotating plate 35 mounted on the rotating shaft 36 and having a notch, a sliding post 32 slidably mounted on the rotating plate 35, a clamping plate 31 and an end plate 33 connected to the ends of the sliding post 32, a spring 34 mounted around the outer periphery of the sliding post 32 and connected to the rotating plate 35 and the end plate 33 at their respective ends, a torsion spring 38 mounted around the outer periphery of the rotating shaft 36 to tension the rotating plate 35 outward, and a limit plate 39 mounted on the outer end of the push plate 29 to limit the outward rotation range of the rotating plate 35. The ends of the torsion spring 38 abut against the push plate 29 and the rotating plate 35, respectively. The clamping space is located between the push plate 29 and the clamping plates 31 at either end. The clamping plates 31 protrude from the inner side of the push plate 29 and have a guide bevel 311 at their bottom ends. When the push plate 17 pushes the L-shaped corner guard upward, the L-shaped corner guard is directly clamped between the push plate 29 and the clamping plates 31 at both ends via the guide bevel 311. Spring 2 34 is compressed, and the L-shaped corner guard is clamped. When the push plate 29 is driven forward by the telescopic device 28, the L-shaped corner guard moves toward the side edge of the packaging box until it is adhered to the packaging box with glue. The glue also spreads between the L-shaped corner guard and the packaging box due to the squeezing effect, improving the adhesive strength.

[0036] When the telescopic device 28 contracts, the push plate 29 moves in the opposite direction, and the firmly adhered L-shaped corner guard will push the clamping plate 31 outward. The clamping plate 31, the sliding column 32 and the rotating plate 35 will rotate through the rotating shaft 36, twisting the torsion spring 38 until the clamping plate 31 is separated from the L-shaped corner guard. The torsion spring 38 then rotates the rotating plate 35 in the opposite direction to a position that fits with the limit plate 39, so that it can be used to clamp a new L-shaped corner guard again in the initial position.

[0037] This embodiment utilizes the clamping space formed by the push plate 29 and the clamping plate 31 to clamp the L-shaped corner protector, and the L-shaped corner protector is bonded to the packaging box by extending the telescopic device 28. When the push mechanism is reset, the clamping plate 31 releases its clamping force on the push mechanism and automatically returns to a state ready for clamping a new L-shaped corner protector.

[0038] Example 4, as Figures 1-6 As shown, the present embodiment proposes a corner protection device for packaging photovoltaic modules. Compared with the first embodiment, the present embodiment further includes a position adjustment component. The position adjustment component includes a frame 2, a slide rail 3 arranged on the top of the frame 2, a motor 4 arranged on the frame 2, a screw rod 5 connected to the output end of the motor 4 and rotatably arranged on the top of the frame 2, and a movable platform threadedly connected to the screw rod 5 and arranged at the bottom of the support frame 6. The support frame 6 is slidably arranged on the slide rail 3 and can be moved and adjusted in the horizontal direction.

[0039] In this embodiment, the output end of the motor 4 can rotate forward and reverse, and can drive the screw rod 5 to rotate. The screw rod 5 drives the movable platform to move, and the movable platform drives the support frame 6 to slide on the slide rail 3 to realize the position adjustment of the support frame 6, thereby realizing the position adjustment of the upper corner protection mechanism and the sticky corner protection mechanism to perform upper corner protection processing on packaging boxes of different specifications.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A corner protection device for packaging photovoltaic modules, characterized in that: include: Conveyor (1), horizontally conveying packaging boxes; The upper corner protection mechanism is distributed in four groups around the conveyor (1), including a support frame (6), a material box (8) arranged on the support frame (6) and having a push port (801) at the bottom end, a push assembly for tensioning and pushing a plurality of L-shaped corner protections placed in the material box (8), a lifting device (15) vertically arranged on the support frame (6), a lifting plate (16) arranged at the bottom end of the lifting device (15), an L-shaped push plate (17) vertically arranged on the lifting plate (16) and aligned with the push port (801), and a push plate (18) at the bottom end of the push plate (18). When the plate (17) pushes up the front end L-shaped corner guard on the inner side of the material box (8), a glue spraying mechanism sprays glue toward the inner side of the L-shaped corner guard. The glue spraying mechanism includes a material blocking column (18) arranged at the front end of the inner side of the material box (8), a glue outlet pipe (26) arranged on the material blocking column (18), and a glue feeding component for feeding glue to the glue outlet pipe (26). The material blocking column (18) is a right-angled triangular prism structure. A groove (181) is provided on the right-angled surface of the material blocking column (18), and the outlet of the glue outlet pipe (26) is located at the groove (181). The sticking corner guard mechanism is distributed one-to-one with the upper corner guard mechanism, and is used to clamp and push the L-shaped corner guard forward; The glue feeding assembly includes a glue barrel (25) arranged on a support frame (6), a fixed column (19) arranged on a lifting plate (16), a guide rod (20) arranged on the fixed column (19), a piston cylinder (23) connected to a glue outlet pipe (26), a piston (22) with a sliding seal arranged in the piston cylinder (23), and a piston rod (21) connected to the piston (22), the guide rod (20) having a slideway (201) for sliding the piston rod (21), the slideway (201) including a vertical path and an inclined path inclined outwardly and connected to the top of the vertical path, the piston cylinder (23) having a feed section and a discharge section, a one-way valve (231) for one-way glue supply to the piston cylinder (23) being provided on the feed section, a one-way valve (232) for one-way glue supply to the glue outlet pipe (26) being provided on the discharge section, and a glue feed pipe (24) being connected between the glue barrel (25) and the feed section of the piston cylinder (23); The corner guard sticking mechanism comprises a mounting frame (27) arranged on a support frame (6), a telescopic device (28) arranged horizontally on the mounting frame (27), and a pushing mechanism connected to the front end of the telescopic device (28), wherein the pushing mechanism has a clamping space for clamping the L-shaped corner guard pushed upward by the pushing plate (17); The pushing mechanism includes an "L"-shaped push plate (29) provided at the front end of the telescopic device (28) and two sets of clamping components symmetrically provided on the push plate (29), the clamping components including a boss (37) provided at the end of the push plate (29), a rotating shaft (36) rotatably provided at the boss (37), a rotating plate (35) provided on the rotating shaft (36) and having a notch, a sliding column (32) slidably provided on the rotating plate (35), and clamping plates (35) respectively connected to both ends of the sliding column (32). 1) and the end plate (33), a spring (34) sleeved on the outer periphery of the sliding column (32) and connected at both ends to the rotating plate (35) and the end plate (33), a torsion spring (38) sleeved on the outer periphery of the rotating shaft (36) and tensioning the rotating plate (35) outward, and a limit plate (39) arranged at the outer end of the push plate (29) and limiting the outward rotation range of the rotating plate (35), the clamping space is located between the push plate (29) and the clamping plates (31) at both ends, and the bottom end of the clamping plate (31) has a guiding inclined surface (311).

2. The photovoltaic module packaging upper corner protection device according to claim 1, characterized in that: Two stoppers (211) are provided on the piston rod (21), and the two stoppers (211) are respectively located on both sides of the slideway (201).

3. The photovoltaic module packaging upper corner protection device according to claim 1, characterized in that: Two grooves (181) are provided on the right-angled surface of the material blocking column (18), and the glue outlet pipe (26) is a "Y"-shaped pipe having a glue inlet end and two glue outlet ends.

4. The photovoltaic module packaging upper corner protection device according to claim 1, characterized in that: The propulsion assembly includes a bracket (7) arranged on a support frame (6), a fixed cylinder (10) arranged horizontally on the bracket (7), a slide rod (11) slidably arranged on the fixed cylinder (10), a push column (9) vertically arranged at the front end of the slide rod (11), and a spring (12) sleeved on the outer periphery of the fixed cylinder (10) and the slide rod (11) and connected to the push column (9) and the bracket (7) at both ends. The front end of the push column (9) has a vertically distributed "V"-shaped surface.

5. The photovoltaic module packaging upper corner protection device according to claim 4, characterized in that: A connecting rod (13) is provided on the pushing column (9), and a handle (14) is provided at the outer end of the connecting rod (13).

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