A retraction device in the polarizer cutting process

Abstract

The present invention discloses a retraction device for a polaroid film cutting process, relating to the field of polaroid film production technology. The device comprises a fixing assembly and a driving assembly, wherein the fixing assembly comprises a top seat, an upper clamping block, and a lower clamping block. The top seat is provided with a through slot, the upper clamping block and the lower clamping block are arranged inside the through slot, and the upper clamping block is arranged above the lower clamping block. A first telescopic rod is driven to retract, causing the top seat to descend, thereby driving the polaroid film between the upper clamping block and the lower clamping block to descend. Then, a first piston head is controlled to slide inside a cavity, driving a first magnet to move. The first magnet can drive a second magnet to move under the action of a magnetic field. The second magnet can drive a sliding seat to slide to a position away from a cutting blade, retracting the polaroid film to be removed to a position away from the cutting blade, and removing the polaroid film without stopping the entire conveyor belt. Subsequent polaroid films can still be moved to the position of the cutting blade for cutting, thereby saving time and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of polaroid production, and in particular to a retraction device used in a polaroid cutting process. Background Art

[0002] Polaroids, or polarizing films, are essentially a film structure consisting of a central PVA layer, two layers of TAC film, a pressure-sensitive adhesive (PSA), a release film, and a protective film. The PSA is the adhesive that bonds the polarizer to the panel and determines its adhesion and processing performance. Polaroids, a key raw material for liquid crystal display (LCD) imaging technology, are primarily used in the production of LCD modules and are used in consumer electronics such as televisions, computers, and mobile phones, as well as other LCD imaging applications.

[0003] The Chinese invention patent application CN 111470368A discloses a polarizer cutting device, which aims to provide a device capable of cutting polarizers of different sizes and fixing the polarizers.

[0004] During the processing, the entire large polarizer needs to be cut into small pieces of raw material, and then the small pieces of raw material are cut according to specific sizes. At present, the polarizer is generally fixed on a conveyor belt for automatic loading, and then the conveyor belt transports the polarizer to the cutter position in turn. The cutter cuts the four sides of the polarizer in turn. During the cutting process, due to equipment failure or operating principles, the polarizer cutting is offset or damaged, and the polarizer needs to be removed. However, since the position of the polarizer on the conveyor belt is fixed, the entire conveyor belt needs to be stopped for operation, which will waste a lot of time and affect work efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that during the automatic cutting of polarizers, since the positions of the polarizers on the conveyor belt are fixed, when one of the polarizers needs to be removed, the entire conveyor belt needs to be stopped for operation, which wastes a lot of time and affects work efficiency.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a retraction device for the polarizer cutting process, which includes a fixing component and a first driving component, the fixing component includes a top seat, an upper clamping block and a lower clamping block, the top seat is provided with a through slot, the upper clamping block and the lower clamping block are arranged inside the through slot, and the upper clamping block is arranged above the lower clamping block; the first driving component includes a sliding seat, a first telescopic rod, a guide rail and a fixed seat, the upper surface of the sliding seat is fixedly connected to one end of the first telescopic rod, the other end of the first telescopic rod is fixedly connected to the lower surface of the top seat, the bottom of the sliding seat is slidably connected to the top of the guide rail, and the bottom of the guide rail is fixedly connected to the fixed seat.

[0007] As a preferred solution of the retraction device in the polarizer cutting process of the present invention, wherein: a cavity is provided inside the guide rail, and the first piston head is slidably connected inside the cavity, the first piston head is fixedly connected to the first magnet, and a second magnet is provided inside the sliding seat corresponding to the first magnet, and a first limit block and a second limit block are fixedly installed on the upper surface of the guide rail.

[0008] As a preferred solution of the retraction device in the polarizer cutting process described in the present invention, it further includes: a second driving assembly, the second driving assembly includes a cylinder, a second piston head, a first spring, a first connecting tube and a second connecting tube, the outer wall of the cylinder is fixedly connected to the top of the sliding seat, an air intake pipe is provided at one end of the cylinder, and a through hole is provided at the other end of the cylinder, the cylinder is fixedly connected to one end of the first connecting tube, the other end of the first connecting tube is fixedly connected to the first telescopic rod, the cylinder is fixedly connected to one end of the second connecting tube, the other end of the second connecting tube is fixedly connected to the inside of the cavity, and the inner wall of the cylinder is slidably connected to the second piston head, the second piston head is fixedly connected to one end of the first spring, and the other end of the first spring is fixedly connected to the inner end wall of the cylinder.

[0009] As a preferred solution of the retraction device in the polarizer cutting process described in the present invention, the second driving assembly also includes a control component, which includes a fixed cylinder, a third piston head, a movable rod and a fixed tube. The fixed cylinder is fixedly connected to the inner end wall of the cylinder, the inner wall of the fixed cylinder is slidably connected to the third piston head, the third piston head is fixedly connected to the movable rod, the movable rod passes through the fixed cylinder, and the other end of the fixed cylinder is fixedly connected to the second piston head, the fixed cylinder is fixedly connected to one end of the fixed tube, and the other end of the fixed tube passes through the second piston head.

[0010] As a preferred solution of the retraction device in the polarizer cutting process described in the present invention, the fixing assembly also includes a first rotating shaft, a second rotating shaft, a second telescopic rod and a third rotating shaft, one end of the first rotating shaft is rotatably connected to the bottom wall of the through groove, the other end of the first rotating shaft is fixedly connected to the lower clamping block, the second rotating shaft is rotatably connected to the top of the top seat, the bottom of the second rotating shaft is fixedly connected to one end of the second telescopic rod, the other end of the second telescopic rod is fixedly connected to one end of the third rotating shaft, the other end of the third rotating shaft is fixedly connected to the upper clamping block, the second rotating shaft is fixedly connected to a limiting ring, and there are two limiting rings, one of which is slidably connected to the top wall of the through groove, and the other limiting ring is slidably connected to the upper surface of the top seat.

[0011] As a preferred solution of the retraction device in the polarizer cutting process described in the present invention, it further includes a rotating assembly, which includes a first gear, a second gear, a third gear, a fourth gear, a drive shaft, a fifth gear, a tooth plate, a cylinder and a fixed block. The two ends of the drive shaft are rotatably connected to the inner wall of the through groove, the first gear, the second gear and the third gear are fixedly connected to the drive shaft, and the second gear is meshed with the fourth gear, the fourth gear is fixedly connected to the third rotating shaft, the third gear is meshed with the fifth gear, and the fifth gear is fixedly connected to the first rotating shaft; the first gear is meshed with the tooth plate, the tooth plate is fixedly connected to one end of the cylinder, the other end of the cylinder is fixedly connected to the fixed block, and the fixed block is fixedly connected to the upper surface of the top seat.

[0012] As a preferred solution of the retraction device in the polarizer cutting process of the present invention, the top of the sliding seat is fixedly connected to one end of the third telescopic rod, the other end of the third telescopic rod is fixedly connected to the lower surface of the top seat, and a second spring is sleeved on the third telescopic rod, one end of the second spring is fixedly connected to the top of the sliding seat, and the other end of the second spring is fixedly connected to the lower surface of the top seat.

[0013] As a preferred solution of the retraction device in the polarizer cutting process described in the present invention, wherein: one end of the guide rod is fixedly connected to the third rotating shaft, the other end of the guide rod is fixedly connected to the limiting shaft, a limiting groove is provided on the second rotating shaft corresponding to the limiting shaft, and the limiting shaft is slidably connected to the inner wall of the limiting groove.

[0014] As a preferred solution of the retraction device in the polarizer cutting process of the present invention, the two sides of the top of the guide rail are fixedly connected to the limit bars, and the limit bars are slidably connected to the bottom of the sliding seat.

[0015] The beneficial effects of the present invention are as follows: when the polarizer needs to be removed, the first telescopic rod is driven to contract, the top seat is lowered, and the polarizer between the upper clamping block and the lower clamping block is driven to descend, and then the first piston head is controlled to slide inside the cavity, driving the first magnet to move. The first magnet can drive the second magnet to move under the action of the magnetic field, and the second magnet can drive the sliding seat to slide to a position away from the cutting knife, so that the polarizer to be removed is retracted to a position away from the cutting knife, and the polarizer is removed without stopping the entire conveyor belt. The subsequent polarizers can still be moved to the position of the cutting knife for cutting in sequence, which is conducive to saving time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of the embodiment of the present disclosure.

[0017] Figure 2 2 is a cross-sectional view of the guide rail in an embodiment of the present disclosure.

[0018] Figure 3 In the embodiment of the present disclosure Figure 1A is an enlarged schematic diagram.

[0019] Figure 4 2 is a cross-sectional view of the cylinder in an embodiment of the present disclosure.

[0020] Figure 5 It is a cross-sectional view of the fixing cylinder in the embodiment of the present disclosure.

[0021] Figure 6 Schematic diagram of the top seat structure in the embodiment of the present disclosure.

[0022] Figure 7 Schematic diagram of the explosion of the upper clamping block, the lower clamping block and related structures in the embodiment of the present disclosure.

[0023] Figure 8 Schematic diagram of the second rotating shaft and the third rotating shaft in the embodiment of the present disclosure.

[0024] Reference numerals: fixing assembly 1, top seat 11, through slot 111, upper clamping block 12, lower clamping block 13, first rotating shaft 14, second rotating shaft 15, limiting ring 151, limiting slot 152, second telescopic rod 16, third rotating shaft 17, guide rod 171, limiting shaft 172, first driving assembly 2, sliding seat 21, second magnet 211, iron plate 212, first telescopic rod 22, guide rail 23, cavity 231, first piston head 232, first magnet 233, limiting strip 234, fixing seat 24, third telescopic rod 25 , second spring 26, second drive assembly 3, cylinder 31, intake pipe 311, through hole 312, second piston head 32, first spring 33, first connecting pipe 34, second connecting pipe 35, control member 36, fixed cylinder 361, third piston head 362, movable rod 363, fixed pipe 364, rotating assembly 4, first gear 41, second gear 42, third gear 43, fourth gear 44, drive shaft 45, fifth gear 46, tooth plate 47, cylinder 48, fixed block 49, conveyor belt 5, cutting knife 6. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example

[0026] Reference Figure 1 and Figure 6 This embodiment provides a retraction device for a polarizer cutting process, which includes a fixing component 1 and a first driving component 2. The fixing component 1 includes a top seat 11, an upper clamping block 12 and a lower clamping block 13. A through slot 111 is provided on the top seat 11. The upper clamping block 12 and the lower clamping block 13 are arranged inside the through slot 111, and the upper clamping block 12 is arranged above the lower clamping block 13.

[0027] In this embodiment, preferably, the upper clamping block 12 and the lower clamping block 13 are close to each other so as to clamp and fix the polarizer.

[0028] The first driving assembly 2 includes a sliding seat 21, a first telescopic rod 22, a guide rail 23 and a fixed seat 24. The upper surface of the sliding seat 21 is fixedly connected to one end of the first telescopic rod 22, the other end of the first telescopic rod 22 is fixedly connected to the lower surface of the top seat 11, the bottom of the sliding seat 21 is slidably connected to the top of the guide rail 23, and the bottom of the guide rail 23 is fixedly connected to the fixed seat 24.

[0029] In this embodiment, preferably, the first telescopic rod 22 can drive the top seat 11 to move up and down when performing telescopic movement, the sliding seat 21 can slide on the top of the guide rail 23, and the fixed seat 24 is used to fix the bottom of the guide rail 23.

[0030] When in use, the fixing seat 24 can be fixed on the existing conveyor belt 5, and multiple sets of fixing components 1 and first driving components 2 can be set on the conveyor belt 5. A cutting knife 6 is set above the conveyor belt 5, and the position of each cutting knife 6 is adjusted and fixed according to the size of the polarizer to be cut. The upper clamping block 12 and the lower clamping block 13 can be driven to move closer to each other by means of an existing electric push rod, etc. When the upper clamping block 12 and the lower clamping block 13 move closer to each other, the polarizer can be clamped and fixed. When the upper edge of the conveyor belt 5 is moved closer to the lower clamping block 13, the polarizer can be clamped and fixed. Figure 1 By moving in the direction of the middle arrow, the fixing assembly 1, the first driving assembly 2 and the polarizer can be driven to the position of the cutting knife 6, and the tip of the cutting knife 6 cuts the polarizer. During the cutting process, due to equipment failure or operating principle, the polarizer is offset or damaged. When the polarizer needs to be removed, the first telescopic rod 22 is driven to retract, so that the top seat 11 is lowered, and the polarizers of the upper clamping block 12 and the lower clamping block 13 are driven to descend. Then, the first piston head 232 is controlled to slide inside the cavity 231, driving the first magnet 233 to move. Under the action of the magnetic field, the first magnet 233 can drive the second magnet 211 to move, and the second magnet 211 can drive the sliding seat 21 to slide to a position away from the cutting knife 6, so that the polarizer to be removed is retracted to a position away from the cutting knife 6, and the polarizer is removed without stopping the entire conveyor belt. The subsequent polarizers can still be moved to the position of the cutting knife 6 for cutting, which is beneficial to saving time and improving work efficiency. Example

[0031] Reference Figures 1 to 8 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that.

[0032] Reference Figure 2A cavity 231 is provided inside the guide rail 23, and the first piston head 232 is slidably connected inside the cavity 231. The first piston head 232 is fixedly connected to the first magnet 233, and a second magnet 211 is provided inside the sliding seat 21 corresponding to the first magnet 233. A first limit block 235 and a second limit block 236 are fixedly installed on the upper surface of the guide rail 23.

[0033] In this embodiment, when the first piston head 232 slides inside the cavity 231, it can drive the first magnet 233 to move. Under the action of the magnetic field, the first magnet 233 can drive the second magnet 211 to move. The second magnet 211 can drive the sliding seat 21 to slide. The first limit block 235 and the second limit block 236 can limit the sliding seat 21 to prevent the sliding seat 21 from separating from the guide rail 23. When assembling, move the guide rail 23 along the guide rail 23. Figure 2 The cross section shown is cut open, and then the first piston head 232 and the first magnet 233 are placed into the cavity 231, and then the cut guide rails 23 are welded together.

[0034] Reference Figure 4 , also includes a second driving assembly 3, the second driving assembly 3 includes a cylinder 31, a second piston head 32, a first spring 33, a first connecting tube 34 and a second connecting tube 35, the outer wall of the cylinder 31 is fixedly connected to the top of the sliding seat 21, one end of the cylinder 31 is provided with an air intake pipe 311, and the other end of the cylinder 31 is provided with a through hole 312, the cylinder 31 is fixedly connected to one end of the first connecting tube 34, the other end of the first connecting tube 34 is fixedly connected to the first telescopic rod 22, the cylinder 31 is fixedly connected to one end of the second connecting tube 35, and the other end of the second connecting tube 35 is fixedly connected to the inside of the cavity 231, and the inner wall of the cylinder 31 is slidably connected to the second piston head 32, the second piston head 32 is fixedly connected to one end of the first spring 33, and the other end of the first spring 33 is fixedly connected to the inner end wall of the cylinder 31.

[0035] In this embodiment, the sliding seat 21 can play a role in fixing the cylinder 31. When the air is extracted from the cylinder 31 by the existing air pump, the air inside the first telescopic rod 22 enters the cylinder 31 through the first connecting pipe 34. After the air inside the first telescopic rod 22 is extracted, the first telescopic rod 22 contracts, and the air inside the cavity 231 enters the cylinder 31 through the second connecting pipe 35. After the air inside the cavity 231 is extracted, the first piston head 232 moves to a position close to the first limit block 235. When assembling, first move the cylinder 31 along the Figure 4 The cross section shown is cut open, and then the parts inside the cylinder 31 are assembled, and the cut cylinder 31 is welded together.

[0036] Reference Figure 4 and Figure 5The second drive assembly 3 also includes a control member 36, which includes a fixed cylinder 361, a third piston head 362, a movable rod 363 and a fixed tube 364. The fixed cylinder 361 is fixedly connected to the inner end wall of the cylinder 31, and the inner wall of the fixed cylinder 361 is slidably connected to the third piston head 362. The third piston head 362 is fixedly connected to the movable rod 363, and the movable rod 363 passes through the fixed cylinder 361, and the other end of the fixed cylinder 361 is fixedly connected to the second piston head 32. The fixed cylinder 361 is fixedly connected to one end of the fixed tube 364, and the other end of the fixed tube 364 passes through the second piston head 32. When assembling, first install the fixed cylinder 361 along the Figure 5 The cross section shown is cut open, and then the parts inside the fixing cylinder 361 are assembled, and then the cut fixing cylinder 361 is welded together.

[0037] When the air inside the first telescopic rod 22 is extracted, the first telescopic rod 22 contracts, and the air inside the fixed cylinder 361 is extracted through the fixed tube 364, and the air pressure inside the fixed cylinder 361 is reduced. When the contraction force of the movable rod 363 is greater than the elastic force of the first spring 33, when the third piston head 362 drives the movable rod 363 to contract, the movable rod 363 drives the second piston head 32 to move toward the direction close to the through hole 312, and discharges the air near the through hole 312 inside the cylinder 31. When the second piston head 32 is exposed to the second connecting tube 35, the air inside the cavity 231 enters the cylinder 31 through the second connecting tube 35. After the air inside the cavity 231 is extracted, the first piston head 232 moves to a position close to the first limit block 235.

[0038] Reference Figure 6 The fixing assembly 1 also includes a first rotating shaft 14, a second rotating shaft 15, a second telescopic rod 16 and a third rotating shaft 17. One end of the first rotating shaft 14 is rotatably connected to the bottom wall of the through groove 111, and the other end of the first rotating shaft 14 is fixedly connected to the lower clamping block 13. The second rotating shaft 15 is rotatably connected to the top of the top seat 11. The bottom of the second rotating shaft 15 is fixedly connected to one end of the second telescopic rod 16, and the other end of the second telescopic rod 16 is fixedly connected to one end of the third rotating shaft 17. The other end of the third rotating shaft 17 is fixedly connected to the upper clamping block 12. The second rotating shaft 15 is fixedly connected to a limiting ring 151, and there are two limiting rings 151, one of which is slidably connected to the top wall of the through groove 111, and the other limiting ring 151 is slidably connected to the upper surface of the top seat 11.

[0039] In this embodiment, the first rotating shaft 14 preferably rotates the lower clamp 13, and the third rotating shaft 17 rotates the upper clamp 12, thereby rotating the polarizer held between the upper and lower clamps 12, 13. Air is pumped into the second telescopic rod 16. When the second telescopic rod 16 extends, it pushes the third rotating shaft 17 downward, which in turn drives the upper clamp 12 downward, bringing the upper and lower clamps 12, 13 closer together and securing the polarizer. The upper and lower clamps 12, 13 are preferably made of soft rubber to prevent scratches on the polarizer, prevent suction cups from gripping the polarizer, and prevent annular halo marks on the polarizer. The second rotating shaft 15 rotates on top of the top base 11, and two retaining rings 151 prevent axial movement of the second rotating shaft 15.

[0040] Reference Figure 6 and Figure 7 , also includes a rotating component 4, the rotating component 4 includes a first gear 41, a second gear 42, a third gear 43, a fourth gear 44, a driving shaft 45, a fifth gear 46, a tooth plate 47, a cylinder 48 and a fixed block 49, the two ends of the driving shaft 45 are rotatably connected to the inner wall of the through groove 111, the driving shaft 45 is fixedly connected to the first gear 41, the second gear 42 and the third gear 43, and the second gear 42 is meshed with the fourth gear 44, the fourth gear 44 is fixedly connected to the third rotating shaft 17, the third gear 43 is meshed with the fifth gear 46, and the fifth gear 46 is fixedly connected to the first rotating shaft 14; the first gear 41 is meshed with the tooth plate 47, the tooth plate 47 is fixedly connected to one end of the cylinder 48, the other end of the cylinder 48 is fixedly connected to the fixed block 49, and the fixed block 49 is fixedly connected to the upper surface of the top seat 11.

[0041] Preferably in this embodiment, when the cylinder 48 performs telescopic movement, it can drive the gear plate 47 to move, the gear plate 47 drives the first gear 41 to rotate, the first gear 41 drives the drive shaft 45 to rotate, the drive shaft 45 drives the second gear 42 and the third gear 43 to rotate, the second gear 42 drives the fourth gear 44 to rotate, the fourth gear 44 drives the third rotating shaft 17 to rotate, the third rotating shaft 17 drives the upper clamping block 12 to rotate, and at the same time the third gear 43 drives the fifth gear 46 to rotate, the fifth gear 46 drives the first rotating shaft 14 to rotate, the first rotating shaft 14 drives the lower clamping block 13 to rotate, the upper clamping block 12 and the lower clamping block 13 rotate at the same time, thereby driving the polarizer clamped and fixed between the upper clamping block 12 and the lower clamping block 13 to rotate.

[0042] Reference Figure 3 The top of the sliding seat 21 is fixedly connected to one end of the third telescopic rod 25, and the other end of the third telescopic rod 25 is fixedly connected to the lower surface of the top seat 11, and a second spring 26 is sleeved on the third telescopic rod 25, and one end of the second spring 26 is fixedly connected to the top of the sliding seat 21, and the other end of the second spring 26 is fixedly connected to the lower surface of the top seat 11.

[0043] Preferably, in this embodiment, the first telescopic rod 22 can drive the top seat 11 to move up and down when performing telescopic movement, and the third telescopic rod 25 will telescope along with the top seat 11, and the third telescopic rod 25 can prevent relative rotation between the top seat 11 and the sliding seat 21.

[0044] Reference Figure 8 One end of the guide rod 171 is fixedly connected to the third rotating shaft 17, and the other end of the guide rod 171 is fixedly connected to the limiting shaft 172. A limiting groove 152 is provided on the second rotating shaft 15 corresponding to the limiting shaft 172, and the limiting shaft 172 is slidably connected to the inner wall of the limiting groove 152.

[0045] Preferably in this embodiment, when the second telescopic rod 16 is extended, it can push the third rotating shaft 17 to move downward, and the third rotating shaft 17 drives the limiting shaft 172 to slide inside the limiting groove 152 through the guide rod 171, which can prevent relative rotation between the third rotating shaft 17 and the second rotating shaft 15, and at the same time prevent the second telescopic rod 16 from being over-extended, causing the polarizer to be crushed.

[0046] Reference Figure 2 The two sides of the top of the guide rail 23 are fixedly connected to the limiting bars 234, and the limiting bars 234 are slidably connected to the bottom of the sliding seat 21.

[0047] In this embodiment, the limiting strip 234 is preferably used to improve the stability of the sliding seat 21 when sliding on the top of the guide rail 23 .

[0048] Reference Figure 2 An iron plate 212 is provided inside the sliding seat 21 , and the iron plate 212 is located above the second magnet 211 .

[0049] In this embodiment, the iron plate 212 can block the magnetic field of the second magnet 211 to prevent the polarizer from being magnetized. Figure 1 The cross section shown is cut open, and then the iron plate 212 and the second magnet 211 are embedded in the sliding seat 21, and then the cut sliding seat 21 is welded together.

[0050] During use, the fixing base 24 can be fixed to an existing conveyor belt 5, and multiple sets of fixing assemblies 1 and first drive assemblies 2 are arranged on the conveyor belt 5. A cutting blade 6 is arranged above the conveyor belt 5. The position of each cutting blade 6 is adjusted and fixed according to the size of the polaroid to be cut. Preferably, there are four cutting blades 6 to correspond to the four edges of the polaroid. The second telescopic rod 16 is controlled to extend, pushing the third rotating shaft 17 downward. The third rotating shaft 17 drives the upper clamping block 12 downward, and the upper clamping block 12 and the lower clamping block 13 approach each other, clamping and fixing the polaroid. The initial position of the first piston head 232 and the first magnet 233 within the cavity 231 is near the second limit block 236. The second limit block 236 engages the sliding base 21, limiting the position of the sliding base 21. When the sliding base 21 moves with the conveyor belt 5 to the position of the first cutting blade 6, the tip of the cutting blade 6 cuts the first edge of the polaroid.

[0051] Then, the control cylinder 48 is extended, and the cylinder 48 drives the gear plate 47 to move, and the gear plate 47 drives the first gear 41 to rotate, and the first gear 41 drives the driving shaft 45 to rotate, and the driving shaft 45 drives the second gear 42 and the third gear 43 to rotate, and the second gear 42 drives the fourth gear 44 to rotate, and the fourth gear 44 drives the third rotating shaft 17 to rotate, and the third rotating shaft 17 drives the upper clamping block 12 to rotate. At the same time, the third gear 43 drives the fifth gear 46 to rotate, and the fifth gear 46 drives the first rotating shaft 14 to rotate, and the first rotating shaft 14 drives the lower clamping block 13 to rotate, and the upper clamping block 12 and the lower clamping block 13 rotate at the same time, thereby driving the polarizer clamped and fixed between the upper clamping block 12 and the lower clamping block 13 to rotate 90°. When the sliding seat 21 moves to the position of the second cutting knife 6 with the conveyor belt 5, the tip of the cutting knife 6 cuts the second edge of the polarizer, and then completes the cutting of the third edge and the fourth edge of the polarizer in sequence.

[0052] When the polarizer is offset or damaged during cutting due to equipment failure or operating principle, and the polarizer needs to be removed, the air is extracted from the cylinder 31 through the existing air pump, and the air inside the first telescopic rod 22 enters the cylinder 31 through the first connecting pipe 34. After the air inside the first telescopic rod 22 is extracted, the first telescopic rod 22 contracts and drives the top seat 11 to descend, so as to prevent the top seat 11 from hitting the cutting knife 6 when moving horizontally. At the same time, the air inside the fixed cylinder 361 is extracted through the fixed pipe 364, and the air inside the fixed cylinder 361 is The pressure decreases. When the contraction force of the movable rod 363 is greater than the elastic force of the first spring 33, when the third piston head 362 drives the movable rod 363 to contract, the movable rod 363 drives the second piston head 32 to move toward the direction close to the through hole 312, and discharges the air near the through hole 312 inside the cylinder 31. When the second piston head 32 exposes the second connecting pipe 35, the air inside the cavity 231 enters the cylinder 31 through the second connecting pipe 35. After the air inside the cavity 231 is extracted, the first piston head 232 moves to a position close to the first limit block 235.

[0053] When the first piston head 232 slides inside the cavity 231, it can drive the first magnet 233 to move. The first magnet 233 can drive the second magnet 211 to move under the action of the magnetic field. The second magnet 211 can drive the sliding seat 21 to slide to a position away from the cutting knife 6, and the polarizer to be removed is retracted to a position away from the cutting knife 6, and the polarizer is removed without stopping the entire conveyor belt. The subsequent polarizers can still be moved to the position of the cutting knife 6 for cutting in sequence, which is conducive to saving time and improving work efficiency.

Claims

1. A retraction device for polarizer cutting, characterized by: include A fixing assembly (1), the fixing assembly (1) comprising a top seat (11), an upper clamping block (12) and a lower clamping block (13), the top seat (11) being provided with a through slot (111), the upper clamping block (12) and the lower clamping block (13) being arranged inside the through slot (111), and the upper clamping block (12) being arranged above the lower clamping block (13); A first driving assembly (2), comprising a sliding seat (21), a first telescopic rod (22), a guide rail (23) and a fixed seat (24), wherein the upper surface of the sliding seat (21) is fixedly connected to one end of the first telescopic rod (22), the other end of the first telescopic rod (22) is fixedly connected to the lower surface of the top seat (11), the bottom of the sliding seat (21) is slidably connected to the top of the guide rail (23), and the bottom of the guide rail (23) is fixedly connected to the fixed seat (24); a cavity (231) is provided inside the guide rail (23), and the cavity (231) is slidably connected to the first piston head (232), the first piston head (232) is fixedly connected to the first magnet (233), and a second magnet (211) is provided inside the sliding seat (21) corresponding to the first magnet (233); a first limit block (235) and a second limit block (236) are fixedly mounted on the upper surface of the guide rail (23); A second drive assembly (3), the second drive assembly (3) comprises a cylinder (31), a second piston head (32), a first spring (33), a first connecting pipe (34) and a second connecting pipe (35), the outer wall of the cylinder (31) is fixedly connected to the top of the sliding seat (21), one end of the cylinder (31) is provided with an air intake pipe (311), the other end of the cylinder (31) is provided with a through hole (312), the cylinder (31) is fixedly connected to one end of the first connecting pipe (34), the other end of the first connecting pipe (34) is fixedly connected to the first telescopic rod (22), the cylinder (31) is fixedly connected to one end of the second connecting pipe (35), the other end of the second connecting pipe (35) is fixedly connected to the inside of the cavity (231), and the inner wall of the cylinder (31) is slidably connected to the second piston head (32), the second piston head (32) is fixedly connected to one end of the first spring (33), and the other end of the first spring (33) is fixedly connected to the inner end wall of the cylinder (31).

2. The polarizer cutting device according to claim 1, wherein: The second drive assembly (3) further includes a control member (36), the control member (36) including a fixed cylinder (361), a third piston head (362), a movable rod (363) and a fixed tube (364), the fixed cylinder (361) being fixedly connected to the inner end wall of the cylinder (31), the inner wall of the fixed cylinder (361) being slidably connected to the third piston head (362), the third piston head (362) being fixedly connected to the movable rod (363), the movable rod (363) passing through the fixed cylinder (361), and the other end of the fixed cylinder (361) being fixedly connected to the second piston head (32), the fixed cylinder (361) being fixedly connected to one end of the fixed tube (364), and the other end of the fixed tube (364) passing through the second piston head (32).

3. The polarizer cutting device according to claim 1, wherein: The fixing assembly (1) further comprises a first rotating shaft (14), a second rotating shaft (15), a second telescopic rod (16) and a third rotating shaft (17), wherein one end of the first rotating shaft (14) is rotatably connected to the bottom wall of the through slot (111), the other end of the first rotating shaft (14) is fixedly connected to the lower clamping block (13), the second rotating shaft (15) is rotatably connected to the top of the top seat (11), the bottom of the second rotating shaft (15) is fixedly connected to one end of the second telescopic rod (16), the other end of the second telescopic rod (16) is fixedly connected to one end of the third rotating shaft (17), the other end of the third rotating shaft (17) is fixedly connected to the upper clamping block (12), the second rotating shaft (15) is fixedly connected to a limiting ring (151), and there are two limiting rings (151), one of which is slidably connected to the top wall of the through slot (111), and the other limiting ring (151) is slidably connected to the upper surface of the top seat (11).

4. The retraction device during polarizer cutting according to claim 3, wherein: The invention also includes a rotating assembly (4), wherein the rotating assembly (4) includes a first gear (41), a second gear (42), a third gear (43), a fourth gear (44), a driving shaft (45), a fifth gear (46), a tooth plate (47), a cylinder (48) and a fixed block (49), wherein both ends of the driving shaft (45) are rotatably connected to the inner wall of the through groove (111), the driving shaft (45) is fixedly connected to the first gear (41), the second gear (42) and the third gear (43), and the second gear (42) is meshedly connected to the fourth gear (44), the fourth gear (44) is fixedly connected to the third rotating shaft (17), the third gear (43) is meshedly connected to the fifth gear (46), and the fifth gear (46) is fixedly connected to the first rotating shaft (14); The first gear (41) is meshedly connected to a toothed plate (47), the toothed plate (47) is fixedly connected to one end of a cylinder (48), the other end of the cylinder (48) is fixedly connected to a fixed block (49), and the fixed block (49) is fixedly connected to the upper surface of the top seat (11).

5. The retraction device during polarizer cutting according to claim 1, wherein: The top of the sliding seat (21) is fixedly connected to one end of a third telescopic rod (25), the other end of the third telescopic rod (25) is fixedly connected to the lower surface of the top seat (11), and a second spring (26) is sleeved on the third telescopic rod (25), one end of the second spring (26) is fixedly connected to the top of the sliding seat (21), and the other end of the second spring (26) is fixedly connected to the lower surface of the top seat (11).

6. The retraction device during polarizer cutting according to claim 3, wherein: One end of the guide rod (171) is fixedly connected to the third rotating shaft (17), and the other end of the guide rod (171) is fixedly connected to the limiting shaft (172). A limiting groove (152) is provided on the second rotating shaft (15) corresponding to the limiting shaft (172), and the limiting shaft (172) is slidably connected to the inner wall of the limiting groove (152).

7. The polarizer cutting device according to claim 1, wherein: The two sides of the top of the guide rail (23) are fixedly connected to the limiting bars (234), and the limiting bars (234) are slidably connected to the bottom of the sliding seat (21).

8. The polarizer cutting device according to claim 1, wherein: An iron plate (212) is provided inside the sliding seat (21), and the iron plate (212) is located above the second magnet (211).

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