Glue supply device for photovoltaic cell production

Abstract

The application discloses a glue supply device for photovoltaic cell production, which comprises a storage glue chamber formed between the lower part of a movable sleeve and the sealing plate of a glue passing sleeve, a convex part radially outward formed on the lower part of a connecting rod, the upper surface of the convex part being in sealing cooperation with the lower end of the movable sleeve, so that a glue outlet chamber is formed between the movable sleeve and the connecting rod, the glue passing through holes on the sealing plate being used to connect the glue inlet chamber and the storage glue chamber, a glue outlet hole on the side wall of the upper part of the movable sleeve being used to communicate with the glue outlet chamber, the glue outlet hole and the glue outlet on the cylinder sleeve having a glue outlet flow channel, the upper surface of the convex part on the connecting rod being a tapered surface with the lower end being open, and the lower end of the movable sleeve being provided with an inner chamfer surface which is in close contact with the tapered surface. The glue supply device can continuously supply glue outward with large flow, can ensure the stability of the output glue pressure and flow, and can provide uniform and stable pressure for the glue liquid, so as to ensure the continuity and stability of the glue supply.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a glue supply device for photovoltaic cell production used for gluing in a photovoltaic processing production line. Background Art

[0002] A solar cell, or photovoltaic cell, is an electrical device that converts light energy directly into electricity through the photovoltaic effect. The photovoltaic effect is a physical and chemical phenomenon. It is a form of photocell, defined as a device whose electrical properties, such as current, voltage, or resistance, change when exposed to light. Individual solar cell devices can be combined into modules, also known as solar panels. The glue supply equipment used for photovoltaic cell glue application often suffers from high glue pressure and flow, resulting in unstable and uneven glue output, which affects glue application quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a glue supply device for photovoltaic cell production, which can not only realize the continuous outflow of glue at a large flow rate, but also ensure the stability of the output glue pressure and flow rate, and can also provide uniform and stable pressure for the glue liquid, thereby ensuring the continuity and stability of the glue supply.

[0004] The cam is secured to the upper edge of the cam and secured to the lower edge of the cam.

[0005] The lower end of the cylinder sleeve is sealed and connected with a glue passing sleeve, and the lower end of the glue passing sleeve with a sealing plate at the upper end is sealed and connected with a glue suction cylinder, and the lower end of the glue suction cylinder is embedded in the glue inlet through hole on the pressure plate, and the lower end of the upper link shaft is connected to the lower link shaft through a connecting rod, and the lower end of the vertically extending lower link shaft passes through the glue passing sleeve and is equipped with a glue scraper spoon, and a glue scraper seal is provided above the glue scraper spoon, and the glue scraper seal includes a lower annular portion, an upper annular portion with an outer diameter smaller than the inner diameter of the lower annular portion, and a connecting rib portion. The lower annular portion and the upper annular portion are concentrically arranged. The annular portions are connected by two symmetrically arranged connecting ribs, the upper annular portion is slidably fitted on the lower link shaft, and a stop protrusion extending outward is provided on the lower link shaft and above the upper annular portion. When the scraper seal slides to the lowest position along the lower link shaft, the lower inner wall of the lower annular portion is in sealing contact with the upper outer wall of the scraper spoon. The inner wall of the upper end of the glue suction cylinder is an inner conical surface open downward. When the scraper seal moves to the highest position along the lower link shaft, the upper outer wall of the lower annular portion is in sealing contact with the lower part of the inner conical surface.

[0006] The cam is secured to the bottom of the sleeve and has an camming element which allows it to move in a vertical direction, and the camming element is secured to the bottom of the sleeve and has a locking mechanism which allows it to be unlocked when the camming element is unlocked. The lower part has a radially outward protrusion, and the lower end of the movable sleeve can be sealed with the upper surface of the protrusion, thereby forming a glue discharge chamber between the movable sleeve and the connecting rod. The glue inlet chamber and the glue storage chamber are connected through a number of glue through holes opened on the sealing plate. A glue discharge hole connected to the glue discharge chamber is opened on the side wall of the upper part of the movable sleeve, and a glue discharge flow channel is provided between the glue discharge hole and the glue outlet on the cylinder sleeve. The upper surface of the protrusion on the connecting rod is a conical surface with an open lower end, and the lower end of the movable sleeve is provided with an inner chamfered surface that can fit with the conical surface.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above solution, the upper portion of the glue inlet hole is cylindrical, and the lower portion is trumpet-shaped and open outward.

[0009] 2. In the above embodiment, the inner wall of the cylinder liner is provided with a radially inward inner flange. Above the inner flange, and between the cylinder liner and the upper connecting shaft, are provided an upper metal ring, a lower metal ring, and a plurality of first and second sealing rings vertically staggered between the upper and lower metal rings.

[0010] The upper metal ring, the first sealing ring and the second sealing ring each have a V-shaped groove extending in the circumferential direction on their lower surfaces, and the upper end surfaces of the first sealing ring, the second sealing ring and the lower metal ring are each a V-shaped inclined surface that can cooperate with the V-shaped groove above them. A clamping nut is connected to the inner wall of the upper end of the cylinder sleeve through a thread, and the lower end surface of the clamping nut is in compression contact with the upper surface of the upper metal ring and causes the lower surface of the lower metal ring to be in compression contact with the upper surface of the inner flange portion.

[0011] 3. In the above scheme, a gap layer is formed between the inner wall of the lower end of the clamping nut and the outer wall of the upper link shaft, and a spacing layer connected to the gap layer is formed between the inner wall of the upper end of the clamping nut and the outer wall of the upper link shaft, and the spacing layer is filled with grease.

[0012] 4. In the above solution, the barrel is set between two lifting cylinders.

[0013] 5. In the above solution, the lower surface of the movable plate and the upper surface of the pressure plate are connected by two vertical connecting rods symmetrically arranged on both sides of the cylinder sleeve, so that the pressure plate can move in the vertical direction with the movable plate.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. The glue supply device for photovoltaic cell production, a glue sleeve is sealingly connected to the lower end of the cylinder sleeve, the lower end of the glue sleeve with a sealing plate is sealingly connected to a glue suction cylinder, the lower end of the glue suction cylinder is embedded into the glue inlet hole on the pressure plate, the lower end of the upper connecting shaft is connected to a lower connecting shaft through a connecting rod, the lower end of the vertically extending lower connecting shaft passes through the glue sleeve and is installed with a glue scraping spoon, a movable part that can move in the vertical direction is arranged in the glue sleeve below the sealing plate, the lower part of the movable part sealingly connected to the lower connecting shaft can be sealingly connected to the upper end of the glue suction cylinder, so that a glue inlet chamber is formed between the glue sleeve, the glue suction cylinder and the movable part, an active sleeve is sleeved on the outer side of the connecting rod, a stop portion is arranged above the active sleeve that can move in the vertical direction, the outer surface of the lower part of the active sleeve is sealingly connected to the inner wall of the cylinder sleeve, so that a glue storage chamber is formed between the lower part of the active sleeve and the sealing plate of the glue sleeve, the lower part of the connecting rod has a radially outward protruding portion, the lower end of the active sleeve can be sealingly connected to the upper surface of the protruding portion, so that a glue outlet chamber is formed between the active sleeve and the connecting rod, the glue inlet chamber and the glue storage chamber are communicated through a plurality of glue passing holes opened on the sealing plate, a glue outlet hole that communicates with the glue outlet chamber is opened on the side wall of the upper part of the active sleeve, and the glue outlet hole and the glue outlet on the cylinder sleeve have a glue outlet flow channel, through the reciprocating movement of the upper and lower connecting shafts, the staggered communication between the glue inlet chamber, the glue storage chamber and the glue outlet chamber is driven, so that the glue is continuously supplied outward with a large flow rate, so as to ensure the demand for the amount of glue on the photovoltaic production line, and also can ensure the stability of the output glue pressure and flow, so as to ensure the quality of the final glue dispensing.

[0016] 2. The glue supply device for photovoltaic cell production, further comprising a glue scraping sealing part arranged above the glue scraping spoon, the glue scraping sealing part comprises a lower annular part, an upper annular part with an outer diameter smaller than the inner diameter of the lower annular part, and a connecting rib part, the concentrically arranged lower annular part and the upper annular part are connected through the two symmetrically arranged connecting rib parts, the upper annular part is slidably sleeved on the lower connecting shaft, a outwardly extending stop protrusion is arranged on the lower connecting shaft above the upper annular part, when the glue scraping sealing part slides to the lowermost position along the lower connecting shaft, the lower end inner wall of the lower annular part is sealingly contacted with the upper end outer wall of the glue scraping spoon, the inner wall of the upper end of the glue suction cylinder is an open downward inner conical surface, when the glue scraping sealing part moves to the uppermost position along the lower connecting shaft, the upper end outer wall of the lower annular part is sealingly contacted with the lower part of the inner conical surface, which can provide uniform and stable pressure for the glue liquid to push away the movable part into the glue storage chamber when the glue scraping spoon moves upward, and can compress the space in the glue suction cylinder when the glue scraping spoon moves downward, so as to maintain the upward flowing trend of the glue liquid, thereby ensuring the continuity and stability of glue supply.

[0017] 3. The glue supply device for photovoltaic cell production of the present invention has an inner flange portion radially inwardly provided on the inner wall of the cylinder sleeve and above the glue outlet, and an upper metal ring, a lower metal ring and a plurality of first sealing rings and second sealing rings arranged vertically and staggered between the upper metal ring and the lower metal ring are provided on the outer side of the upper link shaft and above the inner flange portion, and the upper metal ring, the first sealing ring and the second sealing ring are each provided with a V-shaped groove extending in the circumferential direction on the lower surface facing the inner cavity of the cylinder sleeve, and the upper end surfaces of the first sealing ring, the second sealing ring and the lower metal ring are each capable of being engaged with the upper metal ring. The V-groove cooperates with the V-shaped inclined surface, and a clamping nut is connected to the inner wall of the upper end of the cylinder sleeve through a threaded connection. The lower end face of the clamping nut is squeezed into contact with the upper surface of the upper metal ring and the lower surface of the lower metal ring is squeezed into contact with the upper surface of the inner flange. On the basis of continuously outputting the high-viscosity glue from the cylinder body through the glue outlet on the cylinder sleeve through the pressure plate, the stability of the seal at the upper end of the glue outlet can be always maintained during the long-term reciprocating movement of the upper connecting shaft, avoiding the situation where the high glue pressure in the inner cavity of the cylinder sleeve caused by the high viscosity of the glue liquid leads to unstable sealing performance and greatly shortened sealing service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 This is a schematic diagram of the overall structure of the glue supply device for photovoltaic cell production according to the present invention;

[0019] Attachment Figure 2 This is a partial structural diagram of a glue supply device for photovoltaic cell production according to the present invention;

[0020] Attachment Figure 3 For attachment Figure 2 Schematic diagram of the cross section along AA;

[0021] Attachment Figure 4 For attachment Figure 3 A magnified schematic diagram of point B in the middle;

[0022] Attachment Figure 5 For attachment Figure 3 Enlarged schematic diagram of point C in the middle;

[0023] Attachment Figure 6 For attachment Figure 3 The enlarged schematic diagram of point D in the middle;

[0024] Attachment Figure 7 This is a schematic structural diagram of a scraper seal of a glue supply device for photovoltaic cell production according to the present invention;

[0025] Attachment Figure 8 Schematic diagram of the extended piston rod of the glue supply device for photovoltaic cell production according to the present invention;

[0026] Attachment Figure 9 For attachment Figure 8Schematic cross-section along EE;

[0027] Attachment Figure 10 For attachment Figure 9 Enlarged schematic diagram of point F in the middle.

[0028] In the above drawings: 1. Cylinder; 101. Main body; 102. Piston rod; 2. Cylinder sleeve; 3. Pressure plate; 301. Glue inlet hole; 4. Upper connecting shaft; 41. Stopper; 51. Round nut; 52. Fixing plate; 53. Positioning column; 54. Support plate; 6. Glue outlet; 7. Inner flange; 81. Upper metal ring; 82. Lower metal ring; 83. First sealing ring; 84. Second sealing ring; 85. V-groove; 9. Pressing nut; 91. Gap layer; 92. Spacer layer; 93. Extension; 94. Wrench groove; 10. Retaining ring; 11. Lower nut; 111. First flange; 12. Connecting sleeve; 13. Flange ring; 14. Sealing gasket; 15. Glue scraper seal; 151. Lower annular portion; 152. Upper annular portion; 153. Connecting rib portion; 16. Stop protrusion; 17. Glue feeding sleeve; 171. Closing plate; 172. Glue feeding through hole; 18. Glue suction cylinder; 181. Second flange portion; 19. Connecting rod; 191. Protrusion; 20. Lower connecting shaft; 21. Glue scraper spoon; 22. Movable part; 23. Movable sleeve; 231. Glue outlet hole; 241. Glue inlet chamber; 242. Glue storage chamber; 243. Glue outlet chamber; 25. Glue outlet channel; 100. Barrel; 200. Carrier plate; 300. Lifting cylinder; 400. Movable plate; 500. Vertical connecting rod. DETAILED DESCRIPTION

[0029] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0030] Example 1: A glue supply device for photovoltaic cell production, comprising: a carrier plate 200 for placing a barrel 100, at least two lifting cylinders 300 vertically mounted on the upper surface of the carrier plate 200, a movable plate 400 connected between the upper ends of the piston rods of the lifting cylinders 300, and a pressure plate 3 connected to the movable plate 400 via at least two vertical connecting rods 500, wherein a vertically arranged cylinder 1 is mounted on the lower surface of the movable plate 400, a cylinder sleeve 2 is connected to the main body 101 of the cylinder 1, and the pressure plate 3 is arranged directly below the vertically extending cylinder sleeve 2. A vertically extending upper link shaft 4 is installed at the lower end of the piston rod 102 of the cylinder 1. The lower end of the upper link shaft 4 penetrates into the cylinder sleeve 2. The center of the pressure plate 3 for sealing connection with the inner side wall of the barrel 100 is provided with a glue inlet through hole 301 communicating with the inner cavity of the cylinder sleeve 2. A glue outlet 6 is provided on the side wall of the upper end of the cylinder sleeve 2. A sealing ring 8 is provided above the glue outlet 6 and between the inner wall of the cylinder sleeve 2 and the outer wall of the upper link shaft 4.

[0031] The lower end of the cylinder sleeve 2 is sealed with a glue passing sleeve 17, and the lower end of the glue passing sleeve 17 with a sealing plate 171 at the upper end is sealed with a glue suction cylinder 18. The lower end of the glue suction cylinder 18 is embedded in the glue inlet through hole 301 on the pressure plate 3. The lower end of the upper link shaft 4 is connected to a lower link shaft 20 through a connecting rod 19. The lower end of the vertically extending lower link shaft 20 passes through the glue passing sleeve 17 and is equipped with a glue scraping spoon 21. A glue scraping seal 15 is provided above the glue scraping spoon 21. The glue scraping seal 15 includes a lower annular portion 151, an upper annular portion 152 whose outer diameter is smaller than the inner diameter of the lower annular portion 151, and a connecting rib portion 153. The lower annular portion 152 is concentrically arranged. The ring portion 151 is connected to the upper annular portion 152 by two symmetrically arranged connecting ribs 153. The upper annular portion 152 is slidably fitted on the lower link shaft 20. A stop protrusion 16 extending outward is provided on the lower link shaft 20 and above the upper annular portion 152. When the scraper seal 15 slides to the lowest position along the lower link shaft 20, the lower inner wall of the lower annular portion 151 is in sealing contact with the upper outer wall of the scraper spoon 21. The inner wall of the upper end of the glue suction cylinder 18 is an inner conical surface open downward. When the scraper seal 15 slides to the highest position along the lower link shaft 20, the upper outer wall of the lower annular portion 151 is in sealing contact with the lower part of the inner conical surface.

[0032] A movable part 22 that can move in the vertical direction is provided in the said glue sleeve 17 and is located below the sealing plate 171. The lower part of the movable part 22 is sealed on the lower connecting shaft 20 and can be sealed with the upper end of the glue suction cylinder 18, thereby forming a glue feeding chamber 241 between the glue sleeve 17, the glue suction cylinder 18 and the movable part 22. A movable sleeve 23 is provided on the outer side of the said connecting rod 19. A stopper 41 is provided above the movable sleeve 23 that can move in the vertical direction. The outer surface of the lower part of the movable sleeve 23 is sealed with the inner wall of the cylinder sleeve 2, thereby the lower part of the movable sleeve 23 is sealed with the glue sleeve 1 A glue storage chamber 242 is formed between the sealing plates 171 of the connecting rod 19. The lower part of the connecting rod 19 has a radially outward protrusion 191. The lower end of the movable sleeve 23 can be sealed with the upper surface of the protrusion 191, thereby forming a glue discharge chamber 243 between the movable sleeve 23 and the connecting rod 19. The glue feed chamber 241 and the glue storage chamber 242 are connected through a plurality of glue through holes 172 opened on the sealing plate 171. A glue discharge hole 231 connected to the glue discharge chamber 243 is opened on the side wall of the upper part of the movable sleeve 23. A glue discharge channel 25 is provided between the glue discharge hole 231 and the glue outlet 6 on the cylinder sleeve 2.

[0033] When the piston rod of the cylinder is in an extended state, the scraper spoon at the lower end of the lower connecting shaft is located below the glue liquid level in the glue inlet through hole. In the process of the scraper spoon moving upward with the lower connecting shaft, the glue moving upward with the scraper spoon pushes the movable part upward, causing the seal between the movable part and the glue suction cylinder to fail. The glue enters the glue inlet chamber area from the gap between the movable part and the glue suction cylinder and then enters the glue storage chamber through the glue through hole. In this process, the movable sleeve moves upward under the action of the protrusion on the connecting rod and maintains the seal between it and the protrusion. The volume of the glue storage chamber gradually increases until the piston rod of the cylinder switches to a contracted state.

[0034] The inner wall of the cylinder liner 2 is provided with an inner flange portion 7 extending radially inward. Above the inner flange portion 7 and between the cylinder liner 2 and the upper connecting shaft 4, an upper metal ring 81, a lower metal ring 82, and a plurality of first sealing rings 83 and second sealing rings 84 arranged alternately in the vertical direction between the upper metal ring 81 and the lower metal ring 82 are provided.

[0035] The upper metal ring 81, the first sealing ring 83, and the second sealing ring 84 each have a V-shaped groove 85 extending in the circumferential direction on their lower surfaces. The upper end surfaces of the first sealing ring 83, the second sealing ring 84, and the lower metal ring 82 each have a V-shaped inclined surface that can cooperate with the V-shaped groove 85 above them. A compression nut 9 is threadedly connected to the inner wall of the upper end of the cylinder sleeve 2. The lower end surface of the compression nut 9 is in press contact with the upper surface of the upper metal ring 81, and the lower surface of the lower metal ring 82 is in press contact with the upper surface of the inner flange portion 7.

[0036] First, the lower metal ring is put on the upper link shaft and its lower surface overlaps with the upper end face of the inner flange. Then, multiple first sealing rings and second sealing rings are staggered and put on the upper link shaft in sequence so that the V-grooves on them face downward to the area where glue pressure is generated. Finally, the upper metal ring is put on. The V-grooves on each ring body stacked in sequence match the V-shaped protrusions on the adjacent ring body to improve the stability and integrity of the overall structure. Then, the tightening nut is screwed into the cylinder sleeve so that its lower end face applies a downward extrusion force to the upper metal ring. The first sealing ring and the second sealing ring with the V-groove are radially outward after being squeezed, and are in close contact with the upper link shaft to achieve sealing. The combination of the staggered first sealing ring, the second sealing ring and the upper metal ring and the lower metal ring can not only improve the stability of the overall structure, but also improve its sealing performance and wear resistance. It can withstand high glue pressure for a long time and maintain good sealing, thereby extending its service life.

[0037] The inner walls of the first sealing ring 83 and the second sealing ring 84 are interference fit with the outer wall of the upper link shaft 4 .

[0038] A gap layer 91 is formed between the inner wall of the lower end of the above-mentioned clamping nut 9 and the outer wall of the upper link shaft 4, and a spacing layer 92 connected to the gap layer 91 is formed between the inner wall of the upper end of the clamping nut 9 and the outer wall of the upper link shaft 4, and the spacing layer 92 is filled with grease.

[0039] The stopper 41 is disposed at the lower portion of the upper link shaft 4 .

[0040] A retaining ring 10 is provided between the above-mentioned glue-passing sleeve 17 and the glue-absorbing tube 18. The upper surface of the retaining ring 10 is sealedly connected to the lower end surface of the glue-passing sleeve 17 by an O-ring, and the lower surface is sealedly connected to the upper end surface of the glue-absorbing tube 18 by an O-ring. The upper end of the retaining ring 10 is provided with an inner chamfer, and the inner chamfer surface is in sealing contact with the movable part 22.

[0041] A round nut 51 is mounted on the outer side of the upper end of the cylinder liner 2, and a fixing plate 52 is mounted below the round nut 51 threadedly connected to the cylinder liner 2 and on the outer side of the cylinder liner 2. The lower surface of the round nut 51 overlaps the upper surface of the fixing plate 52, and the fixing plate 52 is connected to the support plate 54 installed on the lower surface of the main body 101 of the cylinder 1 through at least two vertically arranged positioning columns 53.

[0042] The glue outlet 6 is located below the fixing plate 52 .

[0043] The barrel 100 is disposed between two lifting cylinders 300 .

[0044] The lower surface of the movable plate 400 and the upper surface of the pressure plate 3 are connected by two vertical connecting rods 500 symmetrically arranged on both sides of the cylinder sleeve 2, so that the pressure plate 3 can move in the vertical direction with the movable plate 400.

[0045] The inner walls of the upper metal ring 81 and the lower metal ring 82 are clearance-fitted with the outer wall of the upper link shaft 4 .

[0046] The first sealing ring 83 is a UPE sealing ring, the second sealing ring 84 is a polytetrafluoroethylene sealing ring, and the upper metal ring 81 and the lower metal ring 82 are both stainless steel rings.

[0047] The clamping nut 9 has an extension portion 93 extending upward from the upper end surface of the cylinder sleeve 2. The outer wall of the extension portion 93 is provided with a plurality of wrench grooves 94 arranged at intervals along the circumferential direction.

[0048] Example 2: A large flow glue supply system, comprising: a carrier plate 200 for placing a barrel 100, at least two lifting cylinders 300 vertically mounted on the upper surface of the carrier plate 200, a movable plate 400 connected between the upper ends of the piston rods of the lifting cylinders 300, and a pressure plate 3 connected to the movable plate 400 via at least two vertical connecting rods 500, wherein a vertically mounted cylinder 1 is mounted on the lower surface of the movable plate 400, a cylinder sleeve 2 is connected to the main body 101 of the cylinder 1, and the pressure plate 3 is arranged on the lower surface of the movable plate 400. Directly below the vertically extending cylinder sleeve 2, a vertically extending upper link shaft 4 is installed at the lower end of the piston rod 102 of the cylinder 1. The lower end of the upper link shaft 4 penetrates into the cylinder sleeve 2. The center of the pressure plate 3 for sealing connection with the inner side wall of the barrel 100 is provided with a glue inlet through hole 301 communicating with the inner cavity of the cylinder sleeve 2. The characteristic is that a glue outlet 6 is provided on the side wall of the upper end of the cylinder sleeve 2, and a sealing ring 8 is provided above the glue outlet 6 and between the inner wall of the cylinder sleeve 2 and the outer wall of the upper link shaft 4.

[0049] When in use, push the pressure plate that seals the outer wall and the inner wall of the barrel to below the liquid level in the barrel, so that the glue inlet hole on the pressure plate is filled with glue;

[0050] The lower end of the cylinder sleeve 2 is sealed with a glue passing sleeve 17, and the lower end of the glue passing sleeve 17 with a sealing plate 171 at the upper end is sealed with a glue suction cylinder 18. The lower end of the glue suction cylinder 18 is embedded in the glue inlet through hole 301 on the pressure plate 3. The lower end of the upper link shaft 4 is connected to a lower link shaft 20 through a connecting rod 19. The lower end of the vertically extending lower link shaft 20 passes through the glue passing sleeve 17 and is equipped with a glue scraping spoon 21. A glue scraping seal 15 is provided above the glue scraping spoon 21. The glue scraping seal 15 includes a lower annular portion 151, an upper annular portion 152 whose outer diameter is smaller than the inner diameter of the lower annular portion 151, and a connecting rib portion 153. The lower annular portion 152 is concentrically arranged. The ring portion 151 is connected to the upper annular portion 152 by two symmetrically arranged connecting ribs 153. The upper annular portion 152 can be slidably mounted on the lower link shaft 20. A stop protrusion 16 extending outward is provided on the lower link shaft 20 and above the upper annular portion 152. When the scraper seal 15 slides to the bottom along the lower link shaft 20, the lower inner wall of the lower annular portion 151 is in sealing contact with the upper outer wall of the scraper spoon 21. The inner wall of the upper end of the glue suction tube 18 is an inner conical surface open downward. When the scraper seal 15 slides to the top along the lower link shaft 20, the upper outer wall of the lower annular portion 151 is in sealing contact with the lower part of the inner conical surface.

[0051] A movable part 22 that can move in the vertical direction is provided in the said glue sleeve 17 and is located below the sealing plate 171. The lower part of the movable part 22 is sealed on the lower connecting shaft 20 and can be sealed with the upper end of the glue suction cylinder 18, thereby forming a glue feeding chamber 241 between the glue sleeve 17, the glue suction cylinder 18 and the movable part 22. A movable sleeve 23 is provided on the outer side of the said connecting rod 19. A stopper 41 is provided above the movable sleeve 23 that can move in the vertical direction. The outer surface of the lower part of the movable sleeve 23 is sealed with the inner wall of the cylinder sleeve 2, thereby the lower part of the movable sleeve 23 is sealed with the glue sleeve 1 A glue storage chamber 242 is formed between the sealing plates 171 of the connecting rod 19. The lower part of the connecting rod 19 has a radially outward protrusion 191. The lower end of the movable sleeve 23 can be sealed with the upper surface of the protrusion 191, thereby forming a glue discharge chamber 243 between the movable sleeve 23 and the connecting rod 19. The glue feed chamber 241 and the glue storage chamber 242 are connected through a plurality of glue through holes 172 opened on the sealing plate 171. A glue discharge hole 231 connected to the glue discharge chamber 243 is opened on the side wall of the upper part of the movable sleeve 23. A glue discharge channel 25 is provided between the glue discharge hole 231 and the glue outlet 6 on the cylinder sleeve 2.

[0052] The piston rod of the cylinder drives the coaxially arranged upper link shaft, connecting rod and lower link shaft to reciprocate in the vertical direction at a high frequency;

[0053] When the piston rod of the cylinder transitions from a contracted state to an extended state, the movable sleeve first moves downward along with the upper connecting shaft and the connecting rod, reducing the volume of the glue storage chamber. After the glue liquid in the glue storage chamber is squeezed, an upward reaction force is exerted on the movable sleeve, causing the movable sleeve to move upward, resulting in failure of the seal between the movable sleeve and the raised portion on the connecting rod. The glue liquid enters the glue discharge chamber area from the gap between the movable sleeve and the raised portion, and then passes through the glue discharge hole and the glue discharge channel and is output from the glue outlet on the cylinder sleeve.

[0054] A retaining ring 10 is provided between the above-mentioned glue-passing sleeve 17 and the glue-absorbing tube 18. The upper surface of the retaining ring 10 is sealedly connected to the lower end surface of the glue-passing sleeve 17 by an O-ring, and the lower surface is sealedly connected to the upper end surface of the glue-absorbing tube 18 by an O-ring. The upper end of the retaining ring 10 is provided with an inner chamfer, and the inner chamfer surface is in sealing contact with the movable part 22.

[0055] A round nut 51 is mounted on the outer side of the upper end of the cylinder liner 2, and a fixing plate 52 is mounted below the round nut 51 threadedly connected to the cylinder liner 2 and on the outer side of the cylinder liner 2. The lower surface of the round nut 51 overlaps the upper surface of the fixing plate 52, and the fixing plate 52 is connected to the support plate 54 installed on the lower surface of the main body 101 of the cylinder 1 through at least two vertically arranged positioning columns 53.

[0056] The upper surface of the raised portion 191 on the connecting rod 19 is a conical surface with an open lower end, and the lower end of the movable sleeve 23 is provided with an inner chamfered surface that can fit with the conical surface.

[0057] A lower nut 11 is threadedly connected to the outer wall of the lower end of the cylinder sleeve 2 . The lower nut 11 is sleeved on the outer side of the rubber sleeve 17 and is sealed with the outer wall of the rubber sleeve 17 .

[0058] The inner wall of the lower end of the above-mentioned lower nut 11 has a first flange portion 111 radially inward, and the outer wall of the upper end of the above-mentioned glue suction tube 18 has a second flange portion 181 radially outward. The lower surface of the second flange portion 181 overlaps and contacts the upper surface of the first flange portion 111, and the outer surface of the second flange portion 181 is sealed with the inner wall of the lower nut 11.

[0059] A connecting sleeve 12 is provided between the lower nut 11 and the pressure plate 3 and on the outside of the glue suction tube 18. The lower end of the connecting sleeve 12 is embedded in a flange ring 13 and is sealed with the inner wall of the flange ring 13. The flange ring 13 is connected to the upper surface of the pressure plate 3 by bolts, and the inner wall of the connecting sleeve 12 is sealed with the outer wall of the glue suction tube 18.

[0060] A sealing gasket 14 is provided between the flange ring 13 and the upper surface of the pressure plate 3 .

[0061] The upper portion of the glue inlet through hole 301 is cylindrical, and the lower portion is trumpet-shaped and open outward.

[0062] The working principle of the present invention is as follows:

[0063] During assembly, first put the lower metal ring on the upper link shaft and make its lower surface overlap with the upper end face of the inner flange part, then put multiple first sealing rings and second sealing rings on the upper link shaft in an alternating manner and make the V-grooves on them face downward to the area where glue pressure is generated, and finally put on the upper metal ring. The V-grooves on each ring body stacked in sequence match the V-shaped protrusions on the adjacent ring body to improve the stability and integrity of the overall structure, and then screw the clamping nut into the cylinder sleeve so that its lower end face applies a downward extrusion force to the upper metal ring. The first sealing ring and the second sealing ring with the V-groove are radially outward after being squeezed, and are in close contact with the upper link shaft to achieve sealing. The combination of the staggered first sealing ring, the second sealing ring and the upper metal ring and the lower metal ring can not only improve the stability of the overall structure, but also improve its sealing performance and wear resistance. It can withstand high glue pressure for a long time and maintain good sealing, thereby extending its service life.

[0064] When in use, push the pressure plate that seals the outer wall and the inner wall of the barrel to below the liquid level in the barrel, so that the glue inlet hole on the pressure plate is filled with glue;

[0065] The piston rod of the cylinder drives the coaxially arranged upper link shaft, connecting rod and lower link shaft to reciprocate in the vertical direction at a high frequency;

[0066] When the piston rod of the cylinder is in an extended state, the glue scraper spoon at the lower end of the lower connecting shaft is located below the glue liquid level in the glue inlet through hole. In the process of the glue scraper spoon moving upward with the lower connecting shaft, the glue liquid moving upward with the glue scraper spoon pushes the movable part to move upward, causing the seal between the movable part and the glue suction cylinder to fail. The glue enters the glue inlet chamber area through the gap between the movable part and the glue suction cylinder and then enters the glue storage chamber through the glue through hole. During this process, the movable sleeve moves upward under the action of the convex part on the connecting rod and maintains the seal between it and the convex part. The volume of the glue storage chamber gradually increases until the piston rod of the cylinder switches to a retracted state;

[0067] When the piston rod of the cylinder transitions from a contracted state to an extended state, the movable sleeve first moves downward along with the upper connecting shaft and the connecting rod, reducing the volume of the glue storage chamber. After the glue liquid in the glue storage chamber is squeezed, an upward reaction force is exerted on the movable sleeve, causing the movable sleeve to move upward, resulting in failure of the seal between the movable sleeve and the raised portion on the connecting rod. The glue liquid enters the glue discharge chamber area from the gap between the movable sleeve and the raised portion, and then passes through the glue discharge hole and the glue discharge channel and is output from the glue outlet on the cylinder sleeve.

[0068] The above-mentioned glue supply device for photovoltaic cell production drives the cross-connection between the glue inlet chamber, the glue storage chamber, and the glue outlet chamber through the reciprocating movement of the upper and lower link shafts, thereby achieving continuous glue supply at a large flow rate to meet the glue demand on the photovoltaic production line. It can also ensure the stability of the output glue pressure and flow rate, thereby ensuring the quality of the final glue dispensing.

[0069] Furthermore, when the scraper spoon moves upward, it can provide uniform and stable pressure for the glue liquid to push the movable part into the glue storage chamber, and when the scraper spoon moves downward, it can compress the space in the glue suction cylinder to keep the glue liquid flowing upward, thereby ensuring continuous and stable glue supply;

[0070] In addition, on the basis of realizing the continuous output of the high-viscosity glue from the cylinder through the glue outlet on the cylinder liner by the pressure plate, the stability of the seal at the upper end of the glue outlet can be always maintained during the long-term reciprocating movement of the upper connecting shaft, thereby avoiding the high glue pressure in the inner cavity of the cylinder liner caused by the high viscosity of the glue, resulting in unstable sealing performance and greatly shortened sealing service life.

[0071] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A glue supply device for photovoltaic cell production, comprising: A carrier plate (200) for placing a barrel (100), at least two lifting cylinders (300) vertically mounted on the upper surface of the carrier plate (200), a movable plate (400) connected between the upper ends of the piston rods of the lifting cylinders (300), and a pressure plate (3) connected to the movable plate (400) via at least two vertical connecting rods (500), wherein a vertically mounted cylinder (1) is mounted on the lower surface of the movable plate (400), a cylinder sleeve (2) is connected to the main body (101) of the cylinder (1), and the pressure plate (3) is mounted on the vertically extending cylinder sleeve (2). Directly below the cylinder (1), a vertically extending upper link shaft (4) is installed at the lower end of the piston rod (102) of the cylinder (1), and the lower end of the upper link shaft (4) penetrates into the cylinder sleeve (2). The center of the pressure plate (3) for sealing connection with the inner side wall of the barrel (100) is provided with a glue inlet through hole (301) communicating with the inner cavity of the cylinder sleeve (2), characterized in that: a glue outlet (6) is provided on the side wall of the upper end of the cylinder sleeve (2), and a sealing ring (8) is provided above the glue outlet (6) and between the inner wall of the cylinder sleeve (2) and the outer wall of the upper link shaft (4); The lower end of the cylinder sleeve (2) is sealedly connected to a glue passing sleeve (17), and the lower end of the glue passing sleeve (17) with a sealing plate (171) at the upper end is sealedly connected to a glue suction cylinder (18), and the lower end of the glue suction cylinder (18) is embedded in the glue inlet through hole (301) on the pressure plate (3). The lower end of the upper link shaft (4) is connected to a lower link shaft (20) through a connecting rod (19), and the lower end of the vertically extending lower link shaft (20) passes through the glue passing sleeve (17) and is equipped with a glue scraping spoon (21). A glue scraping seal (15) is provided above the glue scraping spoon (21), and the glue scraping seal (15) includes a lower annular portion (151), an upper annular portion (152) whose outer diameter is smaller than the inner diameter of the lower annular portion (151), and a connecting rib portion (153), which are concentrically arranged. The lower annular portion (151) and the upper annular portion (152) are connected by two symmetrically arranged connecting ribs (153), and the upper annular portion (152) can be slidably mounted on the lower link shaft (20). A stop protrusion (16) extending outward is provided on the lower link shaft (20) and above the upper annular portion (152). When the scraper seal (15) moves to the bottom along with the lower link shaft (20), the lower inner wall of the lower annular portion (151) is in sealing contact with the upper outer wall of the scraper spoon (21). The inner wall of the upper end of the glue suction tube (18) is an inner conical surface that is open downward. When the scraper seal (15) moves to the top along with the lower link shaft (20), the upper outer wall of the lower annular portion (151) is in sealing contact with the lower part of the inner conical surface. A movable part (22) movable in the vertical direction is provided inside the glue passing sleeve (17) and below the sealing plate (171). The lower part of the movable part (22) is sealed on the lower connecting shaft (20) and can be sealed with the upper end of the glue sucking cylinder (18), thereby forming a glue feeding chamber (241) between the glue passing sleeve (17), the glue sucking cylinder (18) and the movable part (22). A movable sleeve (23) is provided on the outer side of the connecting rod (19). A stopper (41) is provided above the movable sleeve (23) movable in the vertical direction. The outer surface of the lower part of the movable sleeve (23) is sealed with the inner wall of the cylinder sleeve (2), thereby forming a glue storage chamber (242) between the lower part of the movable sleeve (23) and the sealing plate (171) of the glue passing sleeve (17). The lower end of the connecting rod (19) The movable sleeve (23) has a radially outward protrusion (191), and the lower end of the movable sleeve (23) can be sealed with the upper surface of the protrusion (191), so that a glue discharge chamber (243) is formed between the movable sleeve (23) and the connecting rod (19). The glue feeding chamber (241) and the glue storage chamber (242) are connected through a plurality of glue through holes (172) provided on the sealing plate (171). A glue discharge hole (231) connected to the glue discharge chamber (243) is provided on the side wall of the upper part of the movable sleeve (23), and a glue discharge channel (25) is provided between the glue discharge hole (231) and the glue outlet (6) on the cylinder sleeve (2). The upper surface of the protrusion (191) on the connecting rod (19) is a conical surface with an open lower end, and the lower end of the movable sleeve (23) is provided with an inner chamfered surface that can fit with the conical surface.

2. The adhesive supply device for photovoltaic cell production according to claim 1, characterized in that: The upper portion of the glue inlet through hole (301) is cylindrical, and the lower portion is trumpet-shaped and open outwards.

3. The adhesive supply device for photovoltaic cell production according to claim 1, characterized in that: An inner flange portion (7) extending radially inward is provided on the inner wall of the cylinder sleeve (2); an upper metal ring (81), a lower metal ring (82), and a plurality of first sealing rings (83) and second sealing rings (84) arranged in a vertical direction and staggered between the upper metal ring (81) and the lower metal ring (82) are provided above the inner flange portion (7) and between the cylinder sleeve (2) and the upper link shaft (4); A V-shaped groove (85) extending in the circumferential direction is formed on the lower surface of each of the upper metal ring (81), the first sealing ring (83), and the second sealing ring (84). The upper end surfaces of each of the first sealing ring (83), the second sealing ring (84), and the lower metal ring (82) are V-shaped inclined surfaces that can cooperate with the V-shaped groove (85) above them. A clamping nut (9) is connected to the inner wall of the upper end of the cylinder sleeve (2) through a thread. The lower end surface of the clamping nut (9) is in compression contact with the upper surface of the upper metal ring (81) and causes the lower surface of the lower metal ring (82) to be in compression contact with the upper surface of the inner flange portion (7).

4. The adhesive supply device for photovoltaic cell production according to claim 3, characterized in that: A gap layer (91) is formed between the inner wall of the lower end of the clamping nut (9) and the outer wall of the upper link shaft (4), and a spacer layer (92) communicating with the gap layer (91) is formed between the inner wall of the upper end of the clamping nut (9) and the outer wall of the upper link shaft (4), and the spacer layer (92) is filled with grease.

5. The adhesive supply device for photovoltaic cell production according to claim 1, characterized in that: The barrel (100) is arranged between two lifting cylinders (300).

6. The adhesive supply device for photovoltaic cell production according to claim 1, characterized in that: The lower surface of the movable plate (400) and the upper surface of the pressure plate (3) are connected via two vertical connecting rods (500) symmetrically arranged on both sides of the cylinder sleeve (2), so that the pressure plate (3) can move in the vertical direction along with the movable plate (400).

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