Upper angle bead device for packaging photovoltaic module

Abstract

The invention relates to the field of packaging equipment, in particular to an upper angle bead device for packaging a photovoltaic module. The device comprises a conveyor, an upper angle bead mechanism and an angle bead sticking mechanism, the conveyor is used for horizontally conveying the packaging box; four groups of upper angle bead mechanisms are distributed around the conveyor; comprising a supporting frame, a material box, a pushing assembly, a lifting device and a lifting plate, wherein the material box is arranged on the supporting frame, and a material pushing opening is formed in the bottom end of the material box; the pushing assembly tensions and pushes a plurality of L-shaped angle beads placed in the material box in an attached mode; the L-shaped material pushing plate is vertically arranged on the lifting plate and is aligned with the material pushing opening; and the glue spraying mechanism is used for spraying glue to the inner side surface of the L-shaped angle bead when the L-shaped angle bead at the foremost end of the inner side of the material box is pushed upwards by the material pushing plate. The glue spraying mechanism comprises a material blocking column, a glue outlet pipe and a glue feeding assembly. When the angle bead is additionally arranged, the angle bead is directly adhered to the packaging box, and the packaging box is continuously conveyed to the station of the strapping machine for strapping by using the conveyor, so that the time is saved, and the production line efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of packaging equipment, and particularly to an upper corner protector device for photovoltaic module packaging. Background Art

[0002] After the production of photovoltaic modules, they need to be packaged for subsequent transportation. Photovoltaic modules need to be stacked in a stack during packaging and then packaged. The packaging process includes steps such as installing upper corner protectors, strapping, boxing, and film covering. Installing upper corner protectors can reduce the damage of packaging boxes during transportation and storage.

[0003] Chinese Patent Publication No. CN117246607A discloses an upper corner protector mechanism for photovoltaic module packaging and a photovoltaic module packaging line, including: a vertical corner protector buffer device, a corner protector gripper, and a first driving device; the first driving device is used to drive the corner protector gripper to move along the X direction, and the corner protector gripper can be opposite to the vertical corner protector buffer device and opposite to the edge of the side of the photovoltaic module packaging box by moving along the X direction; the first driving device is used to drive the corner protector gripper to move along the Y direction, and the corner protector gripper can grab the corner protector in the vertical corner protector buffer device and install the corner protector on the edge of the side of the photovoltaic module packaging box by moving along the Y direction. After the corner protector gripper grabs the corner protector, it can directly cooperate with the edge of the side of the photovoltaic module packaging box by moving in the X and Y directions without twisting, with high automation, saving manpower, and improving the packaging efficiency at the same time.

[0004] However, the above technical solution has the following deficiencies: after installing the corner protector, it is necessary to maintain the clamping state and keep still, and then strap with a strapping machine, resulting in a low efficiency of the entire production line. Summary of the Invention

[0005] The object of the present invention is to address the problems in the background art and propose an upper corner protector device for photovoltaic module packaging. When installing the corner protector, the corner protector is directly adhered to the packaging box, and the packaging box is continuously conveyed by a conveyor to the subsequent strapping machine station for strapping, saving time and improving the production line efficiency.

[0006] Technical solution of the present invention: An upper corner guard device for photovoltaic module packaging, comprising a conveyor, an upper corner guard mechanism and an angle guard sticking mechanism; the conveyor is used for horizontally conveying packaging boxes; there are four groups of upper corner guard mechanisms distributed around the conveyor, including a support frame, a material box arranged on the support frame and having a material pushing port at the bottom end, a propulsion component for tensioning and pushing a plurality of L-shaped corner guards placed in the material box in a fitting manner, a lifting device vertically arranged on the support frame, a lifting plate arranged at the bottom end of the lifting device, an L-shaped material pushing plate vertically arranged on the lifting plate and aligned with the material pushing port, and a glue spraying mechanism for spraying glue onto the inner side surface of the L-shaped corner guard when the material pushing plate pushes up the frontmost L-shaped corner guard in the inner side of the material box. The glue spraying mechanism includes a material blocking column arranged at the front end of the inner side of the material box, a glue outlet pipe penetrating through the material blocking column, and a glue feeding component for feeding glue to the glue outlet pipe. The material blocking column is a right-angled triangular prism structure, and a groove is arranged on the right-angled surface of the material blocking column. The outlet of the glue outlet pipe is located at the groove; the angle guard sticking mechanism is distributed in one-to-one correspondence with the upper corner guard mechanism and is used for clamping and pushing forward the L-shaped corner guard.

[0007] Preferably, the glue feeding component includes a glue bucket arranged on the support frame, a fixed column arranged on the lifting plate, a guide rod arranged on the fixed column, a piston cylinder communicated with the glue outlet pipe, a piston slidably and sealingly arranged in the piston cylinder, and a piston rod connected to the piston. The guide rod has a slideway for the piston rod to slide. The slideway includes a vertical channel and an inclined channel obliquely communicating with the top end of the vertical channel outward. The piston cylinder has a feeding section and a discharging section. A one-way valve one for unidirectionally feeding glue to the piston cylinder is arranged on the feeding section, and a one-way valve two for unidirectionally feeding glue to the glue outlet pipe is arranged on the discharging section. A glue inlet pipe is communicated between the glue bucket and the feeding section of the piston cylinder.

[0008] Preferably, two retaining platforms are arranged on the piston rod, and the two retaining platforms are respectively located on both sides of the slideway.

[0009] Preferably, two grooves are arranged on the right-angled surface of the material blocking column in total. The glue outlet pipe is a "Y" - shaped pipe with one glue inlet end and two glue outlet ends.

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

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

[0012] Preferably, the angle 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. The pushing mechanism has a clamping space for clamping the L-shaped corner guard pushed up by the material 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 components symmetrically arranged on the push plate. The clamping component 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, clamping plates and end plates respectively connected to both ends of the sliding column, a second spring 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 sleeved on the outer periphery of the rotating shaft and tensioning the rotating plate outwards, and a limiting plate arranged at the outer end of the push plate and limiting the outer rotation range of the rotating plate. The clamping space is located between the push plate and the clamping plates at both ends, and the bottom end of the clamping plate has a guiding inclined surface.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: When installing the corner guards in the present invention, the L-shaped corner guards are directly adhered to the packaging box, and the conveyor is used to continue transporting the packaging box to the subsequent strapping machine station for strapping, saving time and improving the production line efficiency. When the lifting device drives the lifting plate to move upwards, on the one hand, the pusher plate is used to push the frontmost L-shaped corner guard in the cartridge upwards, and on the other hand, the glue spraying mechanism sprays glue on the inner side of the upward-moving L-shaped corner guard. The corner guard sticking mechanism clamps the L-shaped corner guard with glue and pushes it forward to bond it at the edge line of the packaging box. After the corner guard sticking mechanism disengages from the L-shaped corner guard, the conveyor continues to transport the packaging box, and the strapping machine uses the packing tape to further pack the L-shaped corner guard on the packaging box. The packing range of the packing tape is large, the packing is more secure, and the production line efficiency is higher. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 is Figure 1 a partial structural cross-sectional view of Figure 3 is a partial structural cross-sectional view of pushing the L-shaped corner guard upwards and forwards; Figure 4 is Figure 3 an enlarged view of the structure at A in Figure 5 is a schematic structural diagram of the cartridge; Figure 6 is a partial structural cross-sectional view of the push plate and the clamping plate clamping the L-shaped corner guard.

[0016] Reference numerals: 1, conveyor; 2, frame; 3, slide rail; 4, motor; 5, lead screw; 6, support frame; 7, bracket; 8, material box; 801, material pushing port; 9, material pushing column; 10, fixed cylinder; 11, slide bar; 12, first spring; 13, connecting rod; 14, handle; 15, lifting device; 16, lifting plate; 17, material pushing plate; 18, material blocking column; 181, groove; 19, fixed column; 20, guide rod; 201, slideway; 21, piston rod; 211, retaining platform; 22, piston; 23, piston cylinder; 231, first one-way valve; 232, second one-way valve; 24, glue inlet pipe; 25, glue bucket; 26, glue outlet pipe; 27, mounting frame; 28, telescopic device; 29, pushing plate; 30, sliding rod; 31, clamping plate; 311, guiding inclined surface; 32, sliding column; 33, end plate; 34, second spring; 35, rotating plate; 36, rotating shaft; 37, convex platform; 38, torsion spring; 39, limiting plate. Detailed implementation manners

[0017] Example 1, as Figures 1 - 6 shown, a top corner protector device for photovoltaic module packaging proposed in this example includes a conveyor 1, a top corner protection mechanism, and an adhesive corner protection mechanism.

[0018] The conveyor 1 is used for horizontally conveying packaging boxes. The packaging box is a cuboid structure with four vertical edges on its outer periphery.

[0019] Four groups of top corner protection mechanisms are distributed around the conveyor 1. Specifically, two groups are arranged on each side in the width direction of the conveyor 1. The four groups of top corner protection mechanisms are respectively used to install L-shaped corner protectors at the four edges of the outer periphery of the packaging box along an inclined direction. The top corner protection mechanism includes a support frame 6, a material box 8 provided on the support frame 6 and having a material pushing port 801 at the bottom end, a propulsion assembly for elastically tensioning a plurality of L-shaped corner protectors placed in the material box 8 in a fitting manner, 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 material pushing plate 17 vertically arranged on the lifting plate 16 and aligned with the material pushing port 801, and a glue spraying mechanism for spraying glue onto the inner side surface of the L-shaped corner protector when the material pushing plate 17 pushes the frontmost L-shaped corner protector in the material box 8 upward. The material pushing plate 17 is an "L"-shaped plate structure and can push one L-shaped corner protector upward at a time. The lifting device 15 can adopt a cylinder or an oil cylinder. The rear end and the top end of the material box 8 are open. A plurality of L-shaped corner protectors are pre-placed in the material box 8 in a fitting manner along the horizontal direction and are elastically tensioned by the propulsion assembly. The top end of the material pushing plate 17 faces the frontmost L-shaped corner protector in the material box 8 and can only push the frontmost L-shaped corner protector upward.

[0020] As Figures 2 - 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 delivery component that delivers glue to the glue outlet pipe 26. The material blocking column 18 is a right-angled triangular prism structure, and a groove 181 is arranged on the right-angle surface of the material blocking column 18, specifically, one groove 181 is arranged at each of the two surfaces, and the glue outlet pipe 26 is a "Y"-shaped pipe, having 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 delivery component 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 a groove 181, the glue is located on the inner side of 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.

[0021] The glue delivery assembly includes a glue barrel 25 disposed on the support frame 6, a fixed column 19 disposed on the lifting plate 16, a guide rod 20 disposed on the fixed column 19, a piston cylinder 23 connected to a glue outlet pipe 26, a piston 22 provided in the piston cylinder 23 with a sliding seal, and a piston rod 21 connected to the piston 22. The top of the glue barrel 25 is provided with a feeding plug and a vent hole. After the feeding plug is opened, glue can be added to the glue barrel 25. A heating pipe can be provided in the glue barrel 25 to heat the glue to prevent the glue from solidifying. The guide rod 20 has a slideway 201 for the piston rod 21 to slide, and 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 feeding section and a discharging section. A one-way valve 231 is provided on the feeding section for one-way glue supply to the piston cylinder 23, and a one-way valve 232 is provided on the discharging section 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 feeding section of the piston cylinder 23.

[0022] When the lifting plate 16 moves upward, the guide rod 20 is driven upward by the fixed column 19, and 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 to move inward. At this time, the one-way valve 1 231 is closed, the one-way valve 232 is opened, and the piston 22 squeezes the glue in the piston cylinder 23 to the glue outlet pipe 26, and discharges it from the glue outlet pipe 26 to the inner side of the L-shaped corner guard. When the piston rod 21 moves to the vertical path of the slideway 201, the glue outlet pipe 26 stops spraying glue to prevent the 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, the piston 22 moves outward, the one-way valve 1 231 is opened, the one-way valve 232 is closed, and the glue is extracted from the glue barrel 25 to the piston cylinder 23 through the glue inlet pipe 24 to prepare for the next glue spraying process.

[0023] like Figure 4 As shown, 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 , so that the piston rod 21 can slide effectively along the slideway 201 without being separated from the guide rod 20 .

[0024] As Figure 1 and Figure 2 shown, the adhesive corner protection mechanism and the upper corner protection mechanism are distributed in one-to-one correspondence, and are used to clamp and push forward the L-shaped corner protection. When the pushing plate 17 pushes the frontmost L-shaped corner protection in the material box 8 upward, it can be clamped by the adhesive corner protection mechanism. Then, the adhesive corner protection mechanism pushes the L-shaped corner protection forward to the side edge line of the packaging box, and uses the glue inside the L-shaped corner protection to bond it to the packaging box. The time when the adhesive corner protection mechanism abuts the L-shaped corner protection against the packaging box is short, as long as it can meet the purpose of bonding the L-shaped corner protection to the packaging box with glue.

[0025] In this embodiment, when adding the corner protection, the L-shaped corner protection is directly bonded to the packaging box, and the conveyor 1 is used to continue transporting the packaging box to the strapping machine station for strapping, saving time and improving the production line efficiency. 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 frontmost L-shaped corner protection in the material box 8 upward, and on the other hand, the glue spraying mechanism sprays glue on the inner side surface of the upward-moving L-shaped corner protection. The L-shaped corner protection can be clamped on the adhesive corner protection mechanism, and the adhesive corner protection mechanism pushes the L-shaped corner protection with glue forward and bonds it to the edge line of the packaging box. After the adhesive corner protection mechanism disengages from the L-shaped corner protection, the conveyor 1 continues to transport the packaging box, and the strapping machine uses the packing tape to further pack the L-shaped corner protection on the packaging box. The packing range of the packing tape is large, the packing is more secure, and the production line efficiency is higher.

[0026] Embodiment 2, as Figures 1 - 6 shown, a kind of upper corner protection device for photovoltaic module packing proposed in this embodiment. Compared with Embodiment 1, in this embodiment, the pushing component includes a bracket 7 arranged on the support frame 6, a fixed cylinder 10 horizontally arranged on the bracket 7, a sliding rod 11 slidably arranged on the fixed cylinder 10, a pushing column 9 vertically arranged at the front end of the sliding rod 11, and a first spring 12 sleeved on the outer circumferences of the fixed cylinder 10 and the sliding rod 11 and connected to the pushing column 9 and the bracket 7 at both ends respectively. The front end of the pushing column 9 has a vertically distributed "V" shape surface, which can adaptively push forward and fit a plurality of placed L-shaped corner protections. After the pushing plate 17 pushes the frontmost L-shaped corner protection upward, the pushing plate 17 moves downward and resets, and the first spring 12 will push the pushing column 9 forward, and the pushing column 9 will push the remaining L-shaped corner protections forward to realize the single feeding of the L-shaped corner protections, so as to facilitate the next feeding by the pushing plate 17.

[0027] In addition, a connecting rod 13 is also arranged on the pushing column 9, and a handle 14 is arranged 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 pushing column 9 to move outward, compressing the first spring 12. At this time, L-shaped corner protections can be replenished into the material box 8.

[0028] This embodiment can push the distance of one L-shaped corner protection at a time through the pushing component to supply the L-shaped corner protection pushed upward by the pushing plate 17, so as to push out one L-shaped corner protection upward each time.

[0029] Example 3, as Figures 1 - 6 shown, a upper corner protector device for photovoltaic module packaging proposed in this embodiment. Compared with Example 1, in this embodiment, the adhesive corner protector mechanism includes a mounting frame 27 provided 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 a cylinder or an oil cylinder or an electric push rod. The pushing mechanism has a clamping space for clamping the L-shaped corner protector pushed up by the pushing 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 above the second L-shaped corner protector at the front end inside the material box 8, so that the pushing plate 17 can only push up one L-shaped corner protector at a time.

[0030] As Figure 3 and Figure 6 shown, the pushing mechanism includes an "L"-shaped push plate 29 provided at the front end of the telescopic device 28 and two groups of clamping components symmetrically arranged on the push plate 29. A sliding rod 30 slidably connected to the mounting frame 27 is horizontally arranged on the push plate 29. The clamping component includes a boss 37 provided at the end of the push plate 29, a rotating shaft 36 rotatably arranged at the boss 37, a rotating plate 35 provided on the rotating shaft 36 and having a notch, a sliding column 32 slidably arranged on the rotating plate 35, clamping plates 31 and end plates 33 respectively connected to both ends of the sliding column 32, a second spring 34 sleeved on the outer periphery of the sliding column 32 and connected to the rotating plate 35 and the end plate 33 at both ends, a torsion spring 38 sleeved on the outer periphery of the rotating shaft 36 and outwardly tensioning the rotating plate 35, and a limiting plate 39 provided at the outer end of the push plate 29 and limiting the outer rotation range of the rotating plate 35. Both ends of the torsion spring 38 respectively abut against the push plate 29 and the rotating plate 35. The clamping space is located between the push plate 29 and the clamping plates 31 at both ends. The clamping plates 31 protrude to one side of the inner surface of the push plate 29, and the bottom end of the clamping plate 31 has a guiding inclined surface 311. When the pushing plate 17 pushes up the L-shaped corner protector, the L-shaped corner protector directly snaps into the space between the push plate 29 and the clamping plates 31 at both ends through the guiding inclined surface 311, the second spring 34 is compressed, and the L-shaped corner protector is clamped. When the telescopic device 28 drives the push plate 29 to move forward, the L-shaped corner protector moves towards the side edge line of the packaging box until it is glued to the packaging box. The glue will also spread between the L-shaped corner protector and the packaging box due to the extrusion effect, improving the bonding reliability.

[0031] When the telescopic device 28 contracts, the push plate 29 moves in the reverse direction. The firmly glued L-shaped corner protector will push the clamping plate 31 outwards. 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 disengages from the L-shaped corner protector, and then the torsion spring 38 will reversely rotate the rotating plate 35 to the position where it fits with the limiting plate 39 to be reused for clamping a new L-shaped corner protector at the initial position.

[0032] In this embodiment, the clamping space formed by the push plate 29 and the clamping plate 31 can be used to clamp the L-shaped corner guard, and the L-shaped corner guard can be bonded to the packaging box by the elongation of the telescopic device 28. When the pushing mechanism resets, the clamping plate 31 can release the clamping of the pushing mechanism and automatically return to the state where it can be used to clamp a new L-shaped corner guard next time.

[0033] Embodiment 4, as Figures 1 - 6 shown, a top corner guard device for photovoltaic module packaging proposed in this embodiment. Compared with Embodiment 1, in this embodiment, it further includes a position adjustment component. The position adjustment component includes a frame 2, a slide rail 3 provided at the top of the frame 2, a motor 4 provided on the frame 2, a lead screw 5 connected to the output end of the motor 4 and rotatably provided at the top of the frame 2, and a moving table provided at the bottom of the support frame 6 and threadedly connected to the lead screw 5. The support frame 6 is slidably provided on the slide rail 3 and can be adjusted for movement in the horizontal direction.

[0034] In this embodiment, the output end of the motor 4 can rotate forward and backward, which can drive the lead screw 5 to rotate. The lead screw 5 drives the moving table to move, and the moving table drives the support frame 6 to slide on the slide rail 3, realizing the position adjustment of the support frame 6, thereby realizing the position adjustment of the top corner guard mechanism and the corner guard bonding mechanism, so as to perform top corner guard treatment on packaging boxes of different specifications.

[0035] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. An upper corner protection device for photovoltaic module packaging, characterized in that, Comprising: A conveyor (1) for horizontally conveying packing boxes; An upper corner protector mechanism, with four groups distributed around the conveyor (1), including a support frame (6), a material box (8) arranged on the support frame (6) and having a material pushing opening (801) at the bottom end, a propulsion assembly for tightly pushing and placing a plurality of L-shaped corner protectors 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 material pushing plate (17) vertically arranged on the lifting plate (16) and aligned with the material pushing opening (801), and a glue spraying mechanism for spraying glue onto the inner side surface of the L-shaped corner protector when the material pushing plate (17) pushes up the frontmost L-shaped corner protector inside the material box (8). The glue spraying mechanism includes a material blocking column (18) arranged at the front end inside the material box (8), a glue outlet pipe (26) penetrating through the material blocking column (18), and a glue feeding assembly for feeding glue to the glue outlet pipe (26). The material blocking column (18) is of a right-angled triangular prism structure, and a groove (181) is arranged on the right-angled surface of the material blocking column (18). The outlet of the glue outlet pipe (26) is located at the groove (181); A corner protector sticking mechanism, distributed in one-to-one correspondence with the upper corner protector mechanism, for clamping and pushing forward the L-shaped corner protector.

2. The upper corner guard device for photovoltaic module packaging according to claim 1, characterized in that, The glue feeding assembly includes a glue bucket (25) arranged on the support frame (6), a fixed column (19) arranged on the lifting plate (16), a guide rod (20) arranged on the fixed column (19), a piston cylinder (23) communicated with the glue outlet pipe (26), a piston (22) slidably and sealingly arranged inside the piston cylinder (23), and a piston rod (21) connected to the piston (22). The guide rod (20) has a sliding track (201) for the piston rod (21) to slide. The sliding track (201) includes a vertical track and an inclined track obliquely communicating with the top end of the vertical track. The piston cylinder (23) has a feeding section and a discharging section. A one-way valve one (231) for unidirectionally feeding glue to the piston cylinder (23) is arranged on the feeding section, and a one-way valve two (232) for unidirectionally feeding glue to the glue outlet pipe (26) is arranged on the discharging section. A glue inlet pipe (24) is communicated between the glue bucket (25) and the feeding section of the piston cylinder (23).

3. The upper corner protector device for photovoltaic module packaging according to claim 2, characterized in that Two retaining platforms (211) are arranged on the piston rod (21), and the two retaining platforms (211) are respectively located on both sides of the sliding track (201).

4. The upper corner protection device for photovoltaic module packaging according to claim 2, characterized in that, Two grooves (181) are arranged on the right-angled surface of the material blocking column (18) in total. The glue outlet pipe (26) is a "Y"-shaped pipe, having one glue inlet end and two glue outlet ends.

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

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

7. The upper corner protector device for photovoltaic module packaging according to claim 1, characterized in that, The corner sticking mechanism includes a mounting bracket (27) arranged on the support frame (6), a telescopic device (28) horizontally arranged on the mounting bracket (27), and a pushing mechanism connected to the front end of the telescopic device (28). The pushing mechanism has a clamping space for clamping the L-shaped corner guard pushed by the pushing plate (17).

8. The upper corner protector device for packaging a photovoltaic module according to claim 7, characterized in that, The pushing mechanism includes an "L"-shaped pushing plate (29) arranged at the front end of the telescopic device (28) and two groups of clamping components symmetrically arranged on the pushing plate (29). The clamping component includes a boss (37) arranged at the end of the pushing plate (29), a rotating shaft (36) rotatably arranged at the boss (37), a rotating plate (35) arranged on the rotating shaft (36) and having a notch, a sliding column (32) slidably arranged on the rotating plate (35), clamping plates (31) and end plates (33) respectively connected to both ends of the sliding column (32), a second spring (34) sleeved on the outer periphery of the sliding column (32) and connected to the rotating plate (35) and the end plate (33) at both ends, a torsion spring (38) sleeved on the outer periphery of the rotating shaft (36) and outwardly tensioning the rotating plate (35), and a limiting plate (39) arranged at the outer end of the pushing plate (29) and limiting the outer rotation range of the rotating plate (35). The clamping space is located between the pushing 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).

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