Film drawing equipment

Abstract

The invention relates to the technical field of leveling equipment, in particular to film drawing equipment which comprises a rack, a conveying roller and multiple sets of film drawing structures, and the conveying roller is rotationally arranged on the rack; each group of film drawing structure comprises two film drawing devices, and the two film drawing devices are arranged on the two sides of the rack respectively; each film drawing device comprises two stretching and flattening blocks and an adjusting mechanism; the adjusting mechanism is arranged on the machine frame, and the two stretching and flattening blocks are both connected with the adjusting mechanism. The method has the effect of ensuring the quality of subsequent products.

Description

Technical Field

[0001] The present application relates to the technical field of flattening equipment, and in particular to a film drawing equipment. Background Art

[0002] The sound-transmitting membrane is formed by laminating a flexible film and a slightly sticky plastic film on a rolling machine.

[0003] When wrinkles exist before the flexible film and the plastic film are pressed together, the product quality of the sound-transmitting film will be affected. Summary of the invention

[0004] In order to ensure the quality of subsequent products, the present application provides a film drawing device.

[0005] The present application provides a film drawing device, which adopts the following technical solution: A film-drawing device comprises a frame, a conveying roller and a plurality of groups of film-drawing structures, wherein the conveying roller is rotatably arranged on the frame; each group of the film-drawing structures comprises two film-drawing devices, and the two film-drawing devices are respectively arranged on both sides of the frame; each of the film-drawing devices comprises a stretching block and an adjusting mechanism, and there are two stretching blocks; the adjusting mechanism is arranged on the frame, and the two stretching blocks are connected to the adjusting mechanism.

[0006] By adopting the above technical solution, the flexible film is located between the two stretching blocks in the film pulling device, and then the adjusting mechanism is started, the adjusting mechanism drives the two stretching blocks to move, and the two stretching blocks drive the flexible film to move; in this way, the flexible film will be unfolded in the two film pulling devices, reducing the phenomenon of wrinkles on the flexible film, thereby ensuring the quality of subsequent products.

[0007] Optionally, the adjustment mechanism includes a first adjustment block, a second adjustment block, a first adjustment cylinder, a third adjustment block, a pneumatic finger, a first adjustment assembly and a second adjustment assembly, the first adjustment block is slidably arranged on the frame through the first adjustment assembly; the second adjustment block is arranged on the first adjustment block through the second adjustment assembly; the first adjustment cylinder is arranged on the second adjustment block, and the third adjustment block is connected to the piston rod of the first adjustment cylinder; the pneumatic finger is arranged on the third adjustment block, and the two stretching blocks are respectively arranged on the two jaws of the pneumatic finger.

[0008] By adopting the above technical solution, the second adjusting component is first started, and the second adjusting component drives the second adjusting block to move, and the position of the second adjusting block relative to the first adjusting block is adjusted; then when the flexible film needs to be flattened, the pneumatic fingers are first started, and the pneumatic fingers drive the two stretching blocks to move towards each other, so that the two stretching blocks are respectively pressed against the two sides of the flexible film; then the first adjusting cylinder and the first adjusting component are started, the first adjusting component drives the first adjusting block to move, and the first adjusting block drives the second adjusting block to move; the first adjusting cylinder is started, the piston rod of the first adjusting cylinder drives the third adjusting block to move, and the third adjusting block drives the pneumatic fingers to move, and the pneumatic fingers will drive the two stretching blocks to move, and the two stretching blocks will realize stretching the flexible film.

[0009] Optionally, a limiting assembly is provided on the second adjusting block, and the limiting assembly includes a first connecting block, a second connecting block, a connecting rod and a first spring, the first connecting block is arranged on the second adjusting block; the second connecting block is arranged on the third adjusting block, and a first through hole is opened on the second connecting block; one end of the connecting rod is fixedly provided on the first connecting block and the other end can pass through the first through hole; the first spring is sleeved on the connecting rod, one end of the first spring is connected to the first connecting block and the other end is connected to the second connecting block.

[0010] By adopting the above technical solution, when the first adjusting cylinder is just started, the air pressure of the first adjusting cylinder is unstable, which will cause the piston rod of the first adjusting cylinder to shake, thereby causing the third adjusting block to reciprocate; the first spring is always in a compressed state, so that the force of the first spring can act on the third adjusting block, which can reduce the phenomenon of reciprocating motion of the third adjusting block when the first adjusting cylinder is started.

[0011] Optionally, a plurality of combing structures are provided on the frame, each of the combing structures includes two combing devices, and the two combing devices are respectively provided on both sides of the frame; the combing device includes a first fixed block, a second fixed block, a moving block, a slider, a combing block, a moving assembly, a first adjustment mechanism, and a second adjustment mechanism, and the first fixed block is provided on the frame; the second fixed block is slidably provided on the first fixed block through the moving assembly; two moving blocks are provided, and both of the two moving blocks are slidably provided on the second fixed block through the first adjustment mechanism; the slider is slidably provided on the moving block, and the combing block is provided on the slider; the second adjustment mechanism is provided on the moving block, and the slider and the first fixed block are both connected to the second adjustment mechanism.

[0012] By adopting the above technical solution, the first adjustment mechanism is first started, and the first adjustment mechanism drives the two moving blocks to move towards each other, so that the combing blocks on the two moving blocks respectively contact the two sides of the flexible film; then the moving component and the second adjustment mechanism are started, and the moving component drives the second fixed block to slide on the first fixed block; the second adjustment mechanism drives the slider to move, and the slider drives the combing block to move, and the combing blocks on the two moving blocks will comb the flexible film to reduce the winding phenomenon at the edge of the flexible film; the set combing structure can comb the flexible film, thereby reducing the winding phenomenon at the edge of the flexible film.

[0013] Optionally, a sliding hole is provided on the second fixed block, and the two moving blocks are slidably set in the sliding hole; a sliding groove for the sliding block to slide is provided on the side where the two moving blocks are close to each other; the second adjustment mechanism includes an adjusting screw, a first gear, an adjusting block, a second gear, a first rack and a first adjustment assembly, the adjusting screw is rotatably set on the moving block, the adjusting screw passes through the sliding block and is threadedly connected to the sliding block; the first gear key is connected to the adjusting screw; the adjusting block is slidably set on the first fixed block, the second gear is rotatably set on the adjusting block, and the second gear is meshed with the first gear; the first rack is set on the first fixed block and meshed with the second gear; the first adjustment assembly is connected to the first fixed block, and the adjusting block and the moving block are both connected to the first adjustment assembly.

[0014] By adopting the above technical solution, when the second fixed block of the moving component moves on the first fixed block, the second gear will move relative to the first rack, so the second gear will rotate, the rotating second gear drives the first gear to rotate, the first gear drives the adjusting screw to rotate, the adjusting screw drives the slider to slide in the slide groove, and the slider drives the combing block to move.

[0015] Optionally, the first adjustment assembly includes a second rack, a first adjustment shaft, a third gear, a fourth gear and a third rack, the second rack being arranged on the adjustment block; the first adjustment shaft being rotatably arranged on the first fixed block, the third gear key being connected to the first adjustment shaft and meshing with the second rack; the fourth gear key being connected to the first adjustment shaft; the third rack being arranged on the moving block and meshing with the fourth gear.

[0016] By adopting the above technical solution, when the two moving blocks move away from or towards each other, the third rack on the moving block drives the fourth gear to rotate, the fourth gear drives the first adjustment shaft to rotate, the first adjustment shaft drives the third gear to rotate, the third gear drives the second rack to move, and the second rack will drive the adjustment block to move, and the position of the adjustment block relative to the first fixed block changes, so that the second gear on the adjustment block always remains in meshing with the first gear, and the second gear always remains in meshing with the first rack.

[0017] Optionally, the first adjustment mechanism includes a bidirectional screw, a driving block and a second adjustment component, the bidirectional screw is rotatably set on the second fixed block, the bidirectional screw passes through the two moving blocks, and the two moving blocks are respectively threadedly connected to the two ends of the bidirectional screw; there are two driving blocks, and the two driving blocks are respectively set at the two ends of the bidirectional screw; there are two second adjustment components, both of which are set on the first fixed block, and the two second adjustment components respectively drive the two driving blocks to rotate.

[0018] By adopting the above technical solution, when the second fixed block moves to one end of the first fixed block, one of the second adjustment components will drive one of the driving blocks to rotate, the driving block will drive the bidirectional screw to rotate, and the bidirectional screw will drive the two moving blocks to move towards each other; when the second fixed block moves to the other end of the first fixed block, the other second adjustment component will drive the other driving block to rotate, the driving block will drive the bidirectional screw to rotate, and the bidirectional screw will drive the two moving blocks to move away from each other.

[0019] Optionally, a first groove is formed on the first fixing block, and each of the second adjustment components includes a sliding block, a second spring, a limiting block and a pushing block. The sliding block is slidably arranged in the first groove, one end of the second spring is connected to the sliding block and the other end is connected to the first fixed block; the limiting block is arranged on one side of the sliding block, the pushing block is arranged on the sliding block and is on the same side as the limiting block, and both the limiting block and the pushing block can contact the driving block; the pushing block in the second adjustment component is located on the side of the limiting block away from the other second adjustment component.

[0020] By adopting the above technical solution, when the second fixed block moves to the vicinity of one of the second adjustment components and continues to move in the direction away from the other second adjustment component, the driving block will first contact the limiting block, and the limiting block will block the driving block. When the second fixed block continues to move, the driving block will rotate relative to the limiting block, so that the driving block crosses the limiting block and the pushing block; when the driving block rotates, it will drive the bidirectional screw rod to rotate.

[0021] Optionally, a locking mechanism connected to the bidirectional screw is provided on the first fixed block, and the locking mechanism includes a ratchet, a second adjusting shaft, a pawl, a torsion spring, a fifth gear, an unlocking block and a fourth rack, and the ratchet key is connected to the bidirectional screw; the second adjusting shaft is rotatably set on the second fixed block, and the pawl is connected to the second adjusting shaft and cooperates with the ratchet; the torsion spring is sleeved on the second adjusting shaft, one end of the torsion spring is connected to the second fixed block and the other end is connected to the second adjusting shaft; the fifth gear key is connected to the second adjusting shaft; the unlocking block is fixed on the first fixed block; the fourth rack is arranged on the unlocking block and can mesh with the fifth gear.

[0022] By adopting the above technical solution, when the second fixed block moves, the fourth rack on the unlocking block engages with the fifth gear and drives the fifth gear to rotate, the fifth gear drives the second adjustment shaft to rotate, and the second adjustment shaft drives the pawl to rotate, so that the pawl is no longer separated from the ratchet, so that the bidirectional screw can rotate as needed.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The two film-drawing devices provided in the present application can reduce the phenomenon of wrinkles on the flexible film, thereby ensuring the quality of subsequent products; 2. The combing structure is capable of combing the flexible film, thereby reducing the phenomenon of winding at the edge of the flexible film. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the film drawing device in the embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the adjustment mechanism in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the limiting component in the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the combing device in the embodiment of the present application; Figure 5 This is a schematic diagram of the structure of the second adjustment mechanism in the embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the first adjustment component in the embodiment of the present application; Figure 7 Schematic diagram of the structure of the locking mechanism in the embodiment of the present application.

[0025] Figure numerals: 11, frame; 12, conveying roller; 2, film pulling device; 21, stretching block; 3, adjustment mechanism; 31, first adjustment block; 32, second adjustment block; 33, third adjustment block; 34, first adjustment cylinder; 35, pneumatic finger; 36, first adjustment assembly; 361, support block; 362, second adjustment cylinder; 37, second adjustment assembly; 371, fourth adjustment block; 372, rotating cylinder; 38, limiting assembly; 381, first connecting block; 382, ​​second connecting block; 383, connecting rod; 384, first spring; 4, combing device; 41, first fixed block; 411, second groove; 42, second fixed block; 421, sliding hole; 422, second through hole; 43, moving block; 4 31. slide groove; 44. slider; 45. combing block; 46. third fixed block; 5. first adjustment mechanism; 51. bidirectional screw; 52. drive block; 53. second adjustment assembly; 531. sliding block; 532. second spring; 533. limiting block; 534. pushing block; 6. second adjustment mechanism; 61. adjusting screw; 62. first gear; 63. adjusting block; 64. second gear; 65. first rack; 66. first adjustment assembly; 661. second rack; 662. third gear; 663. fourth gear; 664. third rack; 7. locking mechanism; 71. ratchet; 72. second adjustment shaft; 73. pawl; 74. torsion spring; 75. fifth gear; 76. unlocking block; 77. fourth rack. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-7 This application is described in further detail.

[0027] The embodiment of the present application discloses a film drawing device.

[0028] refer to Figure 1 A film-drawing device includes a frame 11, on which a plurality of conveying rollers 12 are rotatably connected; a group of film-drawing structures are arranged at the feeding end and the discharging end of the frame 11, and a combing structure is arranged on the frame 11 between the two groups of film-drawing structures.

[0029] refer to Figure 1 and Figure 2 Each group of film-drawing structures includes two film-drawing devices 2 , which are respectively arranged on two side walls of the frame 11 , and the flexible film passes through the two film-drawing devices 2 .

[0030] Each film-drawing device 2 includes a first adjustment component 36, which includes a support block 361 fixedly connected to the upper side wall of the frame 11, and a second adjustment cylinder 362 is arranged on the support block 361. The first adjustment block 31 is slidably connected to the support block 361, and the piston rod of the second adjustment cylinder 362 is connected to the first adjustment block 31.

[0031] The first adjusting block 31 is provided with a second adjusting assembly 37, which includes a fourth adjusting block 371 slidably connected to the first adjusting block 31; the first adjusting block 31 is provided with a third adjusting cylinder, and the piston rod of the third adjusting cylinder is connected to the fourth adjusting block 371. The fourth adjusting block 371 is provided with a rotating cylinder 372, and the piston rod of the rotating cylinder 372 is connected to the second adjusting block 32.

[0032] refer to Figure 2 and Figure 3 Two first adjusting cylinders 34 are arranged on the second adjusting block 32, and the piston rod of each first adjusting cylinder 34 is connected to the third adjusting block 33, and the third adjusting block 33 is connected to the pneumatic finger 35, and a stretching block 21 is fixed on the two clamping jaws of the pneumatic finger 35.

[0033] Start the second adjusting cylinder 362, and the piston rod of the second adjusting cylinder 362 drives the first adjusting block 31 to slide on the supporting block 361; start the third adjusting cylinder, and the piston rod of the third adjusting cylinder drives the fourth adjusting block 371 to slide on the first adjusting block 31; start the rotating cylinder 372, and the piston rod of the rotating cylinder 372 drives the second adjusting block 32 to rotate; start the first adjusting cylinder 34, and the piston rod of the first adjusting cylinder 34 drives the third adjusting block 33 to move; start the pneumatic finger 35, and the two clamping jaws of the pneumatic finger 35 drive the two stretching blocks 21 to move toward or away from each other.

[0034] refer to Figure 2 and Figure 3 A limiting assembly 38 is provided on the second adjusting block 32, and the limiting assembly 38 includes a first connecting block 381 fixedly connected to the second adjusting block 32, and a connecting rod 383 is fixedly connected to the first connecting block 381; a second connecting block 382 is fixedly connected to the third adjusting block 33, and a first through hole is provided on the second connecting block 382 for the connecting rod 383 to pass through; a first spring 384 is sleeved on the connecting rod 383, one end of the first spring 384 is connected to the first connecting block 381 and the other end is connected to the second connecting block 382, ​​and the first spring 384 is always in a compressed state.

[0035] When the third adjusting block 33 moves on the second adjusting block 32 toward the direction close to the first adjusting block 31, the second connecting block 382 on the third adjusting block 33 will move toward the direction close to the first connecting block 381, and the second connecting block 382 will squeeze the first spring 384, and the elastic force formed by the first spring 384 will be applied to the third connecting block, thereby reducing the phenomenon of the third adjusting block 33 shaking back and forth due to the unstable air pressure when the first adjusting cylinder 34 is started. In this embodiment, a limiting assembly 38 connected to the first adjusting block 31 can also be provided on the support block 361, and the first connecting block 381 in the limiting assembly 38 is connected to the support block 361, and the second connecting block 382 is connected to the first adjusting block 31; a limiting assembly 38 connected to the fourth adjusting block 371 can also be provided on the first adjusting block 31, and the first connecting block 381 in the limiting assembly 38 is connected to the first adjusting block 31, and the second connecting block 382 is connected to the fourth adjusting block 371.

[0036] refer to Figure 1 and Figure 4 The combing structure includes two combing devices 4, which are respectively arranged on both sides of the frame 11. Each combing device 4 includes a first fixed block 41 fixedly connected to the frame 11, and a second fixed block 42 is slidably connected to the first fixed block 41. The first fixed block 41 is provided with a moving component connected to the second fixed block 42 and driving the second fixed block 42 to slide on the first fixed block 41. The moving component includes any one of a cylinder, an electric push rod or a linear motor module.

[0037] refer to Figure 4 and Figure 5 A sliding hole 421 is provided on the second fixed block 42, and two moving blocks 43 are slidably connected in the sliding hole 421 of the second fixed block 42. A sliding groove 431 is provided on the side where the two moving blocks 43 are close to each other, and a slider 44 is slidably connected in the sliding groove 431, and a combing block 45 is fixedly connected to the slider 44.

[0038] refer to Figure 4 , Figure 5 and Figure 6 A second groove 411 is formed on the first fixed block 41 , and a third fixed block 46 is fixedly connected to the side wall of the second groove 411 . The third fixed block 46 is located between the two moving blocks 43 , and the two moving blocks 43 are symmetrically arranged about the third fixed block 46 .

[0039] A second adjusting mechanism 6 is provided on the moving block 43, and the second adjusting mechanism 6 includes an adjusting screw 61 rotatably connected to the moving block 43, the adjusting screw 61 passes through the slider 44 and is threadedly connected to the slider 44, one end of the adjusting screw 61 passes through the second fixed block 42 and is located in the second groove 411, and a first gear 62 is key-connected to the adjusting screw 61 located in the second groove 411; an adjusting block 63 is slidably connected to the third fixed block 46, and a second gear 64 meshing with the first gear 62 is rotatably connected to the adjusting block 63; a first rack 65 meshing with the second gear 64 is fixedly connected to one side of the third fixed block 46.

[0040] A first adjustment component 66 is provided on the moving block 43, and the first adjustment component 66 includes a second rack 661 fixedly connected to the moving block 43; a first adjustment shaft is rotatably connected to the third fixed block 46, one end of the first adjustment shaft is keyed to a third gear 662 meshing with the second rack 661, and one end of the first adjustment shaft away from the third gear 662 is keyed to a fourth gear 663; a third rack 664 meshing with the fourth gear 663 is fixedly connected to the adjustment block 63.

[0041] When the second fixed block 42 moves on the first fixed block 41, the second gear 64 will move relative to the first rack 65, so the second gear 64 will rotate, the second gear 64 drives the first gear 62 to rotate, the first gear 62 drives the adjusting screw 61 to rotate, and the adjusting screw 61 drives the slider 44 to slide in the sliding groove 431.

[0042] When the two moving blocks 43 are slidably connected in the sliding hole 421 of the second fixed block 42, the second rack 661 on the moving block 43 drives the third gear 662 to rotate, the third gear 662 drives the first adjusting shaft to rotate, the first adjusting shaft drives the second adjusting shaft 72 to rotate, the second adjusting shaft 72 drives the fourth gear 663 to rotate, the fourth gear 663 drives the third rack 664 to move, the third rack 664 drives the adjusting block 63 to move, and the adjusting block 63 drives the second gear 64 to move; in this way, when the moving block 43 moves, the adjusting block 63 moves synchronously, so that the second gear 64 always remains in a state of meshing with the first gear 62, and the second gear 64 also always remains in a state of meshing with the first rack 65.

[0043] refer to Figure 4 and Figure 5A cavity connected to the sliding hole 421 is opened in the second fixed block 42, and a first adjustment mechanism 5 is arranged on the second fixed block 42. The first adjustment mechanism 5 includes a bidirectional screw 51 rotatably connected in the cavity, the bidirectional screw 51 passes through the two moving blocks 43, and the two moving blocks 43 are respectively threadedly connected to the two ends of the bidirectional screw 51; the ends of both ends of the bidirectional screw 51 extend out of the second fixed block 42, and the ends of both ends of the bidirectional screw 51 are fixedly connected with a driving block 52, and the cross-section of the driving block 52 is cross-shaped.

[0044] A plurality of first grooves are provided on the first fixed block 41, and two second adjustment components 53 are provided on the first fixed block 41. The two second adjustment components 53 correspond to the two driving blocks 52 respectively, and the two second adjustment components 53 are respectively located at the two ends of the first fixed block 41 and also respectively located on both sides of the first fixed block 41, that is, the two second adjustment components 53 are diagonally arranged.

[0045] The second adjustment assembly 53 includes a sliding block 531 that is slidably connected to the first groove, a second spring 532 is arranged in the first groove, one end of the second spring 532 is connected to the sliding block 531 and the other end is connected to the first fixed block 41; there are multiple sliding blocks 531 in each second adjustment assembly 53, and one sliding block 531 corresponds to one first groove. A limiting block 533 is fixedly connected to one side of each sliding block 531 away from one end of the second spring 532, and a pushing block 534 with an arc-shaped cross section is fixedly connected to the sliding block 531, and the pushing block 534 and the limiting block 533 are located on both sides of the same end of the sliding block 531. The pushing block 534 in one of the second adjustment assemblies 53 is located on the side of the limiting block 533 away from the other second adjustment assembly 53.

[0046] The two second adjustment components 53 are divided into a first second adjustment component 53 and a second second adjustment component 53. When the second fixed block 42 moves to the vicinity of the first second adjustment component 53 and continues to move in a direction away from the second second adjustment component 53, the driving block 52 will first contact the limiting block 533, and the limiting block 533 will block the driving block 52. When the second fixed block 42 continues to move, the driving block 52 will rotate relative to the limiting block 533, so that the driving block 52 crosses the limiting block 533 and the pushing block 534; when the driving block 52 rotates, it will drive the bidirectional screw to rotate, and the bidirectional screw drives the two moving blocks 43 to move toward or away from each other.

[0047] After the second fixed block 42 moves to a certain position, the second fixed block 42 moves toward the direction close to the second second adjustment component 53, and the driving block 52 on the second fixed block 42 will resist the pushing block 534, and the pushing block 534 will push the sliding block 531 to move, and the sliding block 531 will drive the driving block 52 and the limiting block 533 to move; when the driving block 52 resists the end of the pushing block 534 away from the sliding block 531, the second fixed block 42 that continues to move will cause the driving block 52 to resist the end of the limiting block 533 away from the sliding block 531.

[0048] refer to Figure 4 , Figure 5 and Figure 7 , two locking mechanisms 7 are arranged on the second fixed block 42, and the two locking mechanisms 7 correspond to the two ends of the bidirectional screw 51. Each locking mechanism 7 includes a ratchet 71 keyed to the bidirectional screw 51, and the ratchet teeth on the ratchet 71 in the two locking mechanisms 7 are in opposite directions; a second adjustment shaft 72 is rotatably connected in the cavity of the second fixed block 42, and a pawl 73 cooperating with the ratchet 71 is keyed to the second adjustment shaft 72; a torsion spring 74 is sleeved on the second adjustment shaft 72, and one end of the torsion spring 74 is connected to the second adjustment shaft 72 and the other end is connected to the second fixed block 42. A fifth gear 75 is keyed to the second adjustment shaft 72.

[0049] The first fixed block 41 is fixedly connected with an unlocking block 76. The unlocking blocks 76 of the two locking mechanisms 7 are respectively located at both ends of the first fixed block 41 and also respectively located on both sides of the first fixed block 41, that is, the two unlocking blocks 76 of the two locking mechanisms 7 are arranged diagonally. The second fixed block 42 is provided with a second through hole 422 communicating with the cavity, and the locking block can pass through the second through hole 422; the locking block is provided with a fourth rack 77 meshing with the fifth gear 75.

[0050] The locking mechanism 7 close to the first second adjustment component 53 is the first locking mechanism 7, and the locking mechanism 7 close to the second second adjustment component 53 is the second locking mechanism 7. The locking blocks in the first second adjustment component 53 and the first locking mechanism 7 are located at the same end of the first fixing block 41 and are respectively located on both sides of the first fixing block 41.

[0051] When the second fixing block 42 is located between the first second adjustment assembly 53 and the second second adjustment assembly 53 , the bidirectional screw 51 is in a locked state under the cooperation of the ratchet 71 and the pawl 73 in the first locking mechanism 7 and the second locking mechanism 7 .

[0052] When the second fixed block 42 moves in the direction away from the second second adjustment component 53 to the vicinity of the first second adjustment component 53, the locking block in the first locking mechanism 7 will pass through the second through hole 422 on the second fixed block 42, and the fourth rack 77 on the locking block in the first locking mechanism 7 drives the fifth gear 75 to rotate, and the fifth gear 75 drives the second adjustment shaft 72 to rotate, so that the pawl 73 on the second adjustment shaft 72 no longer engages with the ratchet 71; because the ratchet 71 and the pawl 73 in the second locking mechanism 7 are still in a state of interference and cooperation at this time, the rotation direction of the driving block 52 and the bidirectional screw 51 can only be in one direction. Therefore, when the second fixed block 42 continues to move in the direction away from the second second adjustment component 53, the limiting block 533 will drive the driving block 52 to rotate; when the second fixed block 42 moves to a certain position, the second fixed block 42 moves in the direction close to the second second adjustment component 53. Because the ratchet 71 and the pawl 73 in the second locking mechanism 7 are still in a state of abutment and cooperation, the second fixed block 42 drives the driving block 52 to move in the direction close to the second adjustment component. The driving block 52 can push the limiting block 533 and the pushing block 534 on the same sliding block 531 into the first groove, and the driving block 52 will not rotate.

[0053] The implementation principle of a film-drawing device in an embodiment of the present application is: the two film-drawing devices 2 in the film-drawing structure are divided into a first film-drawing device 2 and a second film-drawing device 2 .

[0054] When one side of the flexible film in the width direction is located between the two stretching blocks 21 on the third adjustment block 33 in the first film-drawing device 2, and the other side of the flexible film in the width direction is located between the two stretching blocks 21 on the third adjustment block 33 in the second film-drawing device 2; start the pneumatic finger 35, and the two clamping claws of the pneumatic finger 35 drive the two stretching blocks 21 to move towards each other, so that the two stretching blocks 21 clamp the two sides of the flexible film respectively. Then start the third adjustment cylinder and the first adjustment cylinder 34, so that the two stretching blocks 21 can drive the flexible film to move in the width direction while following the movement of the flexible film. Therefore, the film-drawing mechanism can first perform a flattening process on the flexible film.

[0055] Then, one side of the flexible film passing through the film pulling structure at the feed end in the width direction will be located between the two moving blocks 43 in a combing device 4, and the other side of the flexible film in the width direction will be located between the two moving blocks 43 in another combing device 4; at this time, the combing block 45 does not interfere with the flexible film, and the second fixed block 42 is located on the side of the first second adjustment component 53 away from the second second adjustment component 53.

[0056] Then, the second fixed block 42 drives the driving block 52 to move toward the direction close to the second second adjustment assembly 53. When the second fixed block 42 moves to the vicinity of the second second adjustment assembly 53, the locking block in the second locking mechanism 7 will pass through the second through hole 422 on the second fixed block 42, and the pawl 73 in the second locking mechanism 7 will no longer engage with the ratchet 71; because the ratchet 71 and the pawl 73 in the first locking mechanism 7 are still in a state of conflicting cooperation, the rotation direction of the driving block 52 and the bidirectional screw 51 can only be one direction. Therefore, when the second fixed block 42 continues to move in the direction away from the first second adjustment assembly 53, the limiting block 533 drives the driving block 52 to rotate; the driving block 52 drives the bidirectional screw 51 to move, the bidirectional screw 51 drives the two moving blocks 43 to move toward each other, and the two moving blocks 43 drive the two combing blocks 45 to move toward each other, so that the two combing blocks 45 both conflict with the flexible film.

[0057] When the second fixed block 42 moves to a certain position, the second fixed block 42 moves toward the direction close to the first second adjustment component 53. Because the ratchet 71 and the pawl 73 in the first locking mechanism 7 are still in a state of abutment and cooperation, and the ratchet 71 and the pawl 73 in the second locking mechanism 7 are not matched together, when the second fixed block 42 drives the driving block 52 to move toward the direction close to the second adjustment component, the driving block 52 can push the limiting block 533 and the pushing block 534 on the same sliding block 531 into the first groove, and the driving block 52 will not rotate.

[0058] When the second fixed block 42 drives the driving block 52 to move to the first second adjustment assembly 53 position, the two moving blocks 43 will move in opposite directions, and the two moving blocks 43 drive the two combing blocks 45 to move, so that the two combing blocks no longer conflict with the flexible film.

[0059] When the second fixed block 42 drives the driving block 52 to move toward the direction close to the second second adjustment assembly 53, the adjusting screw drives the slider 44 to move, and the slider 44 drives the combing block 45 to move away from the first fixed block 41. When the second fixed block 42 drives the driving block 52 to move toward the direction close to the first second adjustment assembly 53, the combing block 45 will move toward the direction close to the first fixed block 41, and the curling of the flexible film can be unfolded under the two combing blocks 45. And the direction of the second fixed block 42 moving toward the first second adjustment assembly is the moving conveying direction of the flexible film.

[0060] Finally, the first film-drawing device 2 and the second film-drawing device 2 at the discharge end of the frame 11 are used to flatten the flexible film again.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A film drawing device, characterized in that: It comprises a frame (11), a conveying roller (12) and a plurality of film-drawing structures, wherein the conveying roller (12) is rotatably arranged on the frame (11); Each group of the film-drawing structures comprises two film-drawing devices (2), and the two film-drawing devices (2) are respectively arranged on two sides of the frame (11); Each of the film-stretching devices (2) comprises a stretching block (21) and an adjustment mechanism (3). The stretching blocks (21) are provided with two; The adjusting mechanism (3) is arranged on the frame (11), and the two stretching blocks (21) are both connected to the adjusting mechanism (3).

2. A film drawing device according to claim 1, characterized in that: The adjusting mechanism (3) comprises a first adjusting block (31), a second adjusting block (32), a first adjusting cylinder (34), a third adjusting block (33), a pneumatic finger (35), a first adjusting component (36) and a second adjusting component (37). The first adjustment block (31) is slidably arranged on the frame (11) via the first adjustment assembly (36); The second adjustment block (32) is arranged on the first adjustment block (31) via the second adjustment component (37); The first adjusting cylinder (34) is arranged on the second adjusting block (32), and the third adjusting block (33) is connected to the piston rod of the first adjusting cylinder (34); The pneumatic finger (35) is arranged on the third adjustment block (33), and the two stretching blocks (21) are respectively arranged on two clamping claws of the pneumatic finger (35).

3. A film drawing device according to claim 2, characterized in that: The second adjustment block (32) is provided with a limiting assembly (38), the limiting assembly (38) comprising a first connecting block (381), a second connecting block (382), a connecting rod (383) and a first spring (384). The first connecting block (381) is arranged on the second adjusting block (32); The second connecting block (382) is arranged on the third adjusting block (33), and a first through hole is provided on the second connecting block (382); One end of the connecting rod (383) is fixedly arranged on the first connecting block (381) and the other end is capable of passing through the first through hole; The first spring (384) is sleeved on the connecting rod (383), one end of the first spring (384) is connected to the first connecting block (381) and the other end is connected to the second connecting block (382), and the first spring (384) is always in a compressed state.

4. A film drawing device according to claim 3, characterized in that: A plurality of combing structures are arranged on the frame (11), each of the combing structures comprises two combing devices (4), and the two combing devices (4) are arranged on two sides of the frame (11) respectively; The combing device (4) comprises a first fixed block (41), a second fixed block (42), a moving block (43), a sliding block (44), a combing block (45), a moving assembly, a first adjustment mechanism (5) and a second adjustment mechanism (6). The first fixing block (41) is arranged on the frame (11); The second fixed block (42) is slidably arranged on the first fixed block (41) through the moving assembly; Two movable blocks (43) are provided, and both movable blocks (43) are slidably arranged on the second fixed block (42) via the first adjustment mechanism (5); The slider (44) is slidably arranged on the moving block (43), and the combing block (45) is arranged on the slider (44); The second adjustment mechanism (6) is arranged on the moving block (43), and the sliding block (44) and the first fixed block (41) are both connected to the second adjustment mechanism (6).

5. A film drawing device according to claim 4, characterized in that: The second fixed block (42) is provided with a sliding hole (421), and the two movable blocks (43) are both slidably arranged in the sliding hole (421); and a sliding groove (431) for the sliding block (44) to slide is provided on one side of the two movable blocks (43) close to each other; The second adjustment mechanism (6) comprises an adjustment screw (61), a first gear (62), an adjustment block (63), a second gear (64), a first rack (65) and a first adjustment assembly (66). The adjusting screw rod (61) is rotatably disposed on the moving block (43), and the adjusting screw rod (61) passes through the sliding block (44) and is threadedly connected to the sliding block (44); The first gear (62) is key-connected to the adjusting screw rod (61); The adjustment block (63) is slidably disposed on the first fixed block (41), the second gear (64) is rotatably disposed on the adjustment block (63), and the second gear (64) is meshed with the first gear (62); The first rack (65) is arranged on the first fixed block (41) and meshes with the second gear (64); The first adjustment component (66) is connected to the first fixed block (41), and the adjustment block (63) and the movable block (43) are both connected to the first adjustment component (66).

6. A film drawing device according to claim 5, characterized in that: The first adjustment assembly (66) comprises a second rack (661), a first adjustment shaft, a third gear (662), a fourth gear (663) and a third rack (664). The second rack (661) is arranged on the adjustment block (63); The first adjustment shaft is rotatably arranged on the first fixed block (41); the third gear (662) is key-connected to the first adjustment shaft and meshes with the second rack (661); the fourth gear (663) is key-connected to the first adjustment shaft; The third rack (664) is arranged on the moving block (43) and meshes with the fourth gear (663).

7. A film drawing device according to claim 4, characterized in that: The first adjustment mechanism (5) comprises a bidirectional screw (51), a drive block (52) and a second adjustment assembly (53). The bidirectional screw (51) is rotatably mounted on the second fixed block (42), the bidirectional screw (51) passes through the two moving blocks (43), and the two moving blocks (43) are respectively threadedly connected to two ends of the bidirectional screw (51); Two driving blocks (52) are provided, and the two driving blocks (52) are respectively arranged at two ends of the bidirectional screw rod (51); Two second adjustment components (53) are provided, and the two second adjustment components (53) are both provided on the first fixed block (41), and the two second adjustment components (53) respectively drive the two driving blocks (52) to rotate.

8. The film drawing device according to claim 7, characterized in that: The first fixing block (41) is provided with a first groove. Each of the second adjustment components (53) comprises a sliding block (531), a second spring (532), a limiting block (533) and a pushing block (534). The sliding block (531) is slidably disposed in the first groove, one end of the second spring (532) is connected to the sliding block (531) and the other end is connected to the first fixed block (41); The limiting block (533) is arranged on one side of the sliding block (531), the pushing block (534) is arranged on the sliding block (531) and is located on the same side as the limiting block (533), and both the limiting block (533) and the pushing block (534) are capable of contacting the driving block (52); The pushing block (534) in the second adjustment component (53) is located on a side of the limiting block (533) away from another second adjustment component (53).

9. A film drawing device according to claim 8, characterized in that: The first fixing block (41) is provided with a locking mechanism (7) connected to the bidirectional screw (51), the locking mechanism (7) comprising a ratchet (71), a second adjustment shaft (72), a pawl (73), a torsion spring (74), a fifth gear (75), an unlocking block (76) and a fourth rack (77). The ratchet wheel (71) is key-connected to the bidirectional screw (51); The second adjustment shaft (72) is rotatably disposed on the second fixed block (42), and the ratchet (73) is connected to the second adjustment shaft (72) and cooperates with the ratchet wheel (71); The torsion spring (74) is sleeved on the second adjustment shaft (72), one end of the torsion spring (74) is connected to the second fixing block (42) and the other end is connected to the second adjustment shaft (72); The fifth gear (75) is key-connected to the second adjustment shaft (72); The unlocking block (76) is fixed on the first fixing block (41); The fourth rack (77) is arranged on the unlocking block (76) and is capable of meshing with the fifth gear (75).

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