Film slitting machine

Abstract

A film slitting machine, comprising an unwinding device (800); a slitting device (200); first offset measurement assemblies (300), which are configured to measure the offset of a portion of strip-shaped films; first rotary drums (540) around which a portion of the strip-shaped films are wound; first linear driving assemblies (510), which are configured to drive the first rotary drums (540) to move in a front-rear direction; a first slip shaft (110), which is configured to wind the strip-shaped films; second offset measurement assemblies (400), which are configured to measure the offset of the other portion of the strip-shaped films; second rotary drums (610) around which the other portion of the strip-shaped films are wound; second linear driving assemblies, which are configured to drive the second rotary drums (610) to move in the front-rear direction; and a second slip shaft (120), which is configured to wind the other portion of the strip-shaped films. The film slitting machine can control the offset of each strip-shaped film, thereby helping to improve the yield of the strip-shaped films.

Description

Film slitting machine TECHNICAL FIELD

[0001] The present application relates to the technical field of film processing, in particular to a film slitting machine. BACKGROUND

[0002] The film slitting machine is a crucial equipment in the coating industry, which can accurately cut large rolls of film as needed to realize the size customization of the film, thereby improving the subsequent production efficiency of the film and optimizing the utilization rate of the film material. The film slitting machine plays a key role in the fields of packaging, printing, electronics, etc., and is one of the indispensable important tools in modern industrial production. In the prior art, the film slitting machine usually includes multiple blades for cutting a whole film into multiple strip films. Since the wear degrees of the multiple blades are different, the forces of the multiple blades on the multiple strip films are also different, which causes the strip films to easily deviate due to uneven tension, and further causes the strip films to easily collide with each other. When the deviation of the strip films exceeds the qualified deviation range, the colliding strip films will cause the size of the cut strip films to not meet the specification requirements, thereby reducing the yield of the cut strip films. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a film slitting machine which can avoid the collision of strip films and is beneficial to improve the yield of the cut strip films.

[0004] The film slitting machine according to the embodiments of the present application comprises:

[0005] A film unwinding device for unwinding a whole film from left to right;

[0006] A rack arranged on the right of the film unwinding device;

[0007] A film slitting device arranged on the rack, the film slitting device being configured to slit the whole film into multiple strip films;

[0008] A plurality of first deviation detecting assemblies arranged on the right of the film slitting device, the plurality of first deviation detecting assemblies being distributed on the rack along the front-rear direction, each of the plurality of first deviation detecting assemblies being provided with a qualified deviation range, and each of the plurality of first deviation detecting assemblies being configured to detect the deviation of a part of the strip films;

[0009] A plurality of first traction assemblies are distributed on the frame in the front-rear direction, each of the first traction assemblies comprises a first rotating drum and a first mounting cylinder, the first rotating drum is rotatably sleeved on the first mounting cylinder, and each of the first rotating drums is used for winding a part of the strip film;

[0010] A plurality of first linear drive assemblies are respectively arranged in the first mounting cylinders, each of the first linear drive assemblies is electrically connected with the first offset detection assembly, and each of the first linear drive assemblies is used for driving the first rotating drum to move in the front-rear direction, so that the offset of the part of the strip film wound on the first rotating drum falls within the qualified offset range.

[0011] A first differential shaft is arranged on the right of the first traction assemblies, the front and rear ends of the first differential shaft are rotatably connected to the frame, and the first differential shaft is used for winding a part of the strip film.

[0012] A plurality of second offset detection assemblies are arranged on the right of the slitting device, the second offset detection assemblies are distributed on the frame in the front-rear direction, the qualified offset range is arranged in each of the second offset detection assemblies, and each of the second offset detection assemblies is used for detecting the offset of another part of the strip film.

[0013] A plurality of second traction assemblies are distributed on the frame in the front-rear direction, each of the second traction assemblies comprises a second rotating drum and a second mounting cylinder, the second rotating drum is rotatably sleeved on the second mounting cylinder, and each of the second rotating drums is used for winding another part of the strip film.

[0014] A plurality of second linear drive assemblies are respectively arranged in the second mounting cylinders, each of the second linear drive assemblies is electrically connected with the second offset detection assembly, and each of the second linear drive assemblies is used for driving the second rotating drum to move in the front-rear direction, so that the offset of another part of the strip film wound on the second rotating drum falls within the qualified offset range.

[0015] A second differential shaft is arranged on the right of the second traction assemblies and below the first differential shaft, the front and rear ends of the second differential shaft are rotatably connected to the frame, and the second differential shaft is used for winding another part of the strip film.

[0016] The method has at least the following beneficial effects:

[0017] When the film in roll needs to be slitting, the operator can place the film in roll to be slit on the unwinding device. The unwinding device unwinds the whole film from left to right, and after the whole film moves to the slitting device, the slitting device can slit the whole film into a plurality of strip films. Part of the strip films and another part of the strip films continue to move from left to right, and the part of the strip films are wound around a plurality of first rotating cylinders respectively, and the another part of the strip films are wound around a plurality of second rotating cylinders respectively. The first slip shafts wind the part of the strip films, and the second slip shafts wind the another part of the strip films, so as to complete the separate winding of the plurality of strip films. The plurality of first offset detection assemblies can respectively detect the offset of the part of the strip films in real time. When any one or all of the part of the strip films are offset and the offset exceeds the qualified offset range, the plurality of first linear drive assemblies respectively drive the plurality of first rotating cylinders to move in the front-back direction, so that the plurality of first rotating cylinders can respectively drive the part of the strip films to move forward and backward, and thus the part of the strip films can all fall within the qualified offset range. The plurality of second offset detection assemblies can respectively detect the offset of the another part of the strip films in real time. When any one or all of the another part of the strip films are offset and the offset exceeds the qualified offset range, the plurality of second linear drive assemblies respectively drive the plurality of second rotating cylinders to move in the front-back direction, so that the plurality of second rotating cylinders can respectively drive the another part of the strip films to move forward and backward, and thus the another part of the strip films can all fall within the qualified offset range. The film slitting machine can control the offset of each strip film after slitting, so that the offset of each strip film after slitting in the slitting process can all fall within the qualified offset range, effectively avoiding the collision between the plurality of strip films, and thus the size of each strip film after slitting meets the specification requirements, which is beneficial to improve the yield of the strip film after slitting.

[0018] The film slitting machine according to the embodiment of the present application further comprises a first mounting plate, both ends of the first mounting plate in front and back are connected with the rack, and a plurality of first traction assemblies are connected to the first mounting plate in the front-back direction.

[0019] The film slitting machine according to the embodiment of the present application further comprises a first mounting plate, both ends of the first mounting plate in front and back are connected with the rack, and a plurality of first traction assemblies are connected to the first mounting plate in the front-back direction.

[0020] According to the film slitting machine provided by the embodiment of the present application, the first traction assembly further comprises a first adapter sleeve, the first adapter sleeve is sleeved on the first mounting sleeve, the first rotating sleeve is rotatably sleeved on the first adapter sleeve, the first mounting sleeve is provided with a first guide hole parallel to the front-rear direction, the first linear driving assembly comprises a first motor, a first screw rod, a first nut and a first connecting rod, the first screw rod is parallel to the front-rear direction, one end of the first screw rod is rotatably connected to the first mounting sleeve, the other end of the first screw rod is connected to the output end of the first motor, the first nut is threadedly connected with the first screw rod, the first connecting rod is arranged in the first guide hole, the upper end of the first connecting rod is connected with the first adapter sleeve, and the lower end of the first connecting rod is connected with the first nut.

[0021] According to the film slitting machine provided by the embodiment of the present application, the first installation rod parallel to the front-rear direction is connected with the rack, and the first offset detection assemblies are slidably connected to the first installation rod in the front-rear direction.

[0022] According to the film slitting machine provided by the embodiment of the present application, the front-rear ends of the first installation rod are detachably connected to the rack, the first offset detection assembly comprises a first connecting piece, a first mounting block and a first distance sensor, one end of the first connecting piece is slidably sleeved on the first installation rod in the front-rear direction, the first mounting block is rotatably connected to the other end of the first connecting piece, the first mounting block is provided with a first mounting opening, the first distance sensor is arranged on the inner wall of the first mounting opening, and the area in the first mounting opening corresponding to the first distance sensor is used for allowing one of the strip-shaped films to pass through.

[0023] According to the film slitting machine provided by the embodiment of the present application, the slitting device comprises a cutter shaft, a cutter holder, a plurality of blades and a plurality of round-bottom knives, the cutter shaft is parallel to the front-rear direction, the front-rear ends of the cutter shaft are rotatably connected to the rack, the round-bottom knives are linearly arranged on the cutter shaft in the front-rear direction, the cutter holder is arranged on the rack, the cutter holder is arranged above the cutter shaft, the blades are linearly arranged on the cutter holder in the front-rear direction, the blades and the round-bottom knives are one-to-one correspondingly arranged, the gap between the blades and the round-bottom knives is used for allowing the whole film to pass through, so that the blades and the round-bottom knives can cut the whole film into a plurality of strip-shaped films.

[0024] According to the film slitting machine provided by the embodiment of the present application, the heating device is arranged on the rack, and the heating device is used for heating part of the whole film between the blades and the round-bottom knives.

[0025] According to the film slitting machine provided in the embodiment of the present application, the heating device is an infrared heater.

[0026] According to the film slitting machine provided in the embodiment of the present application, the unwinding device comprises an expansion roller and a rotary driving mechanism, the expansion roller is used for sleeving the whole film roll, and the rotary driving mechanism is used for driving the expansion roller to rotate, so that the whole film roll can be unwound from left to right. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0028] Fig. 1 is a structural schematic diagram of the film slitting machine according to the embodiment of the present application;

[0029] Fig. 2 is a partial structural schematic diagram of the film slitting machine according to the embodiment of the present application;

[0030] Fig. 3 is a structural schematic diagram of the whole film, a part of the strip film and another part of the strip film according to the embodiment of the present application;

[0031] Fig. 4 is a structural schematic diagram of the first traction assembly tractioning a part of the strip film and the second traction assembly tractioning another part of the strip film in the film slitting machine according to the embodiment of the present application;

[0032] Fig. 5 is a partial enlarged schematic diagram of C in Fig. 4;

[0033] Fig. 6 is a side structural schematic diagram of the first traction assembly tractioning a part of the strip film and the second traction assembly tractioning another part of the strip film in the film slitting machine according to the embodiment of the present application;

[0034] Fig. 7 is a structural schematic diagram of the first traction assembly in the film slitting machine according to the embodiment of the present application;

[0035] Fig. 8 is a sectional structural schematic diagram of the first traction assembly in the film slitting machine according to the embodiment of the present application;

[0036] Fig. 9 is a structural schematic diagram of the first mounting block in the film slitting machine according to the embodiment of the present application;

[0037] Reference numerals: Frame 100; First differential shaft 110; Second differential shaft 120; First mounting plate 130; First slide rail 131; First slider 132; Second mounting plate 140; First mounting rod 150; Second mounting rod 160; Cutting device 200; Blade shaft 210; Round bottom blade 211; Blade holder 220; Blade 221; First offset detection component 300; First connector 310; First mounting block 320; First mounting port 321; First distance sensor 330; Second offset detection component 400; First traction component 500; First linear drive component 510; First motor 511; First nut 512; First screw 513; First connecting rod 514; First mounting cylinder 520; First guide hole 521; First adapter cylinder 530; First rotating cylinder 540; First mounting base 550; Second traction component 600; Second rotating cylinder 610; Heating device 700; Unwinding device 800; expansion and contraction roller 810. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0041] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0042] Referring to Figures 1 to 4, a film slitting machine according to an embodiment of this application includes:

[0043] The unwinding device 800 is used for unwinding the whole film from left to right;

[0044] The rack 100 is arranged at the right of the unwinding device 800;

[0045] The slitting device 200 is arranged on the rack 100, and is used for slitting the whole film, so that the whole film is slitted into a plurality of strip films;

[0046] The plurality of first offset detection assemblies 300 are arranged at the right of the slitting device 200, and are distributed on the rack 100 along the front-rear direction, and each of the plurality of first offset detection assemblies 300 is provided with a qualified offset range, and each of the plurality of first offset detection assemblies 300 is used for detecting the offset of a part of the strip films;

[0047] The plurality of first traction assemblies 500 are distributed on the rack 100 along the front-rear direction, and each of the first traction assemblies 500 comprises a first rotating cylinder 540 and a first mounting cylinder 520, the first rotating cylinder 540 is rotatably sleeved on the first mounting cylinder 520, and each of the plurality of first rotating cylinders 540 is used for winding a part of the strip films;

[0048] The plurality of first linear drive assemblies 510 are arranged in the plurality of first mounting cylinders 520 respectively, the plurality of first linear drive assemblies 510 are electrically connected with the plurality of first offset detection assemblies 300 respectively, and each of the plurality of first linear drive assemblies 510 is used for driving the plurality of first rotating cylinders 540 to move along the front-rear direction, so that the offset of the part of the strip films wound on the plurality of first rotating cylinders 540 can fall within the qualified offset range;

[0049] The first slip shaft 110 is arranged at the right of the plurality of first traction assemblies 500, and the front-rear ends of the first slip shaft 110 are rotatably connected to the rack 100, and the first slip shaft 110 is used for winding a part of the strip films;

[0050] The plurality of second offset detection assemblies 400 are arranged at the right of the slitting device 200, and are distributed on the rack 100 along the front-rear direction, and each of the plurality of second offset detection assemblies 400 is provided with a qualified offset range, and each of the plurality of second offset detection assemblies 400 is used for detecting the offset of another part of the strip films;

[0051] a plurality of second traction assemblies 600 distributed on the frame 100 along the front-rear direction, each of the second traction assemblies 600 comprising a second rotating drum 610 and a second mounting cylinder, the second rotating drum 610 being rotatably sleeved on the second mounting cylinder, and each of the plurality of second rotating drums 610 being used for winding another part of the strip-shaped film thereon;

[0052] a plurality of second linear driving assemblies, each of the plurality of second linear driving assemblies being arranged in one of the plurality of second mounting cylinders, each of the plurality of second linear driving assemblies being electrically connected with one of the plurality of second offset detection assemblies 400, and each of the plurality of second linear driving assemblies being used for driving the corresponding second rotating drum 610 to move along the front-rear direction, so that the offset of the another part of the strip-shaped film wound on the corresponding second rotating drum 610 falls within the qualified offset range;

[0053] a second differential shaft 120 arranged to the right of the plurality of second traction assemblies 600 and below the first differential shaft 110, both front and rear ends of the second differential shaft 120 being rotatably connected to the frame 100, and the second differential shaft 120 being used for winding the another part of the strip-shaped film.

[0054] It can be understood that when the film wound into a roll needs to be slitted, the operator can place the film to be slit on the unwinding device 800. The unwinding device 800 unwinds the whole film from left to right, and after the whole film moves to the slitting device 200, the slitting device 200 can slit the whole film into a plurality of strip-shaped films. The part of the strip-shaped films and the another part of the strip-shaped films continue to move from left to right, the part of the strip-shaped films are wound on the plurality of first rotating drums 540 respectively, and the another part of the strip-shaped films are wound on the plurality of second rotating drums 610 respectively. The first differential shaft 110 winds the part of the strip-shaped films, and the second differential shaft 120 winds the another part of the strip-shaped films, so as to complete the separate winding of the plurality of strip-shaped films.

[0055] The plurality of first offset detection assemblies 300 can respectively detect the offset of the partial strip-shaped films in real time. When any one or all of the partial strip-shaped films are offset and the offset exceeds the qualified offset range, the plurality of first linear drive assemblies 510 respectively drive the corresponding plurality of first rotating cylinders 540 to move in the front-back direction, so that the plurality of first rotating cylinders 540 can respectively drive the partial strip-shaped films to move forward and backward, and thus the partial strip-shaped films can all fall within the qualified offset range. The plurality of second offset detection assemblies 400 can respectively detect the offset of the other partial strip-shaped films in real time. When any one or all of the other partial strip-shaped films are offset and the offset exceeds the qualified offset range, the plurality of second linear drive assemblies respectively drive the corresponding plurality of second rotating cylinders 610 to move in the front-back direction, so that the plurality of second rotating cylinders 610 can respectively drive the other partial strip-shaped films to move forward and backward, and thus the other partial strip-shaped films can all fall within the qualified offset range. The film slitting machine can control the offset of each strip-shaped film after slitting, so that the offset of each strip-shaped film after slitting in the slitting process can all fall within the qualified offset range, effectively avoiding collision between the plurality of strip-shaped films, and thus the size of each strip-shaped film after slitting meets the specification requirements, which is beneficial to improve the yield of the strip-shaped film after slitting.

[0056] It should be explained that, with reference to FIGS. 3 and 4, in the embodiment of the present application, after the whole film is cut by the slitting device 200, the whole film is cut into partial strip-shaped films and other partial strip-shaped films, and the partial strip-shaped films and the other partial strip-shaped films are arranged alternately, as shown in A in the figure, which is the partial strip-shaped film, and B in the figure, which is the other partial strip-shaped film. The first differential shaft 110 and the second differential shaft 120 respectively wind the strip-shaped film A (i.e., the partial strip-shaped film) and the strip-shaped film B (i.e., the other partial strip-shaped film), so that the first differential shaft 110 and the second differential shaft 120 can complete the separate winding of the strip-shaped film A and the strip-shaped film B after slitting. For the convenience of explanation, in the embodiment of the present application, the whole film is cut into a plurality of strip-shaped films A and a plurality of strip-shaped films B, and the strip-shaped film A is used to represent the partial strip-shaped film, and the strip-shaped film B is used to represent the other partial strip-shaped film. The plurality of strip-shaped films A are respectively wound on the plurality of first rotating cylinders 540, and the strip-shaped film A is pressed with the first rotating cylinder 540. When the first rotating cylinder 540 moves forward and backward, the first rotating cylinder 540 can drive the strip-shaped film A to move forward and backward under the action of friction. The plurality of strip-shaped films B are respectively wound on the plurality of second rotating cylinders 610, and the strip-shaped film B is pressed with the second rotating cylinder 610. When the second rotating cylinder 610 moves forward and backward, the second rotating cylinder 610 can drive the strip-shaped film B to move forward and backward under the action of friction.

[0057] On the other hand, the film slitting machine can control the offset of each strip-shaped film after slitting, so that the offset of each strip-shaped film after slitting in the slitting process can fall within the qualified offset range, avoiding collision between the plurality of strip-shaped films A and the plurality of strip-shaped films B, and facilitating improvement of the yield of the strip-shaped films after slitting.

[0058] In the embodiment of the present application, referring to FIGS. 3, 4 and 6, the lengths of the first rotating cylinders 540 and the second rotating cylinders 610 in the front-back direction are the same, the widths of the strip-shaped films A and the strip-shaped films B are the same, the distance between the adjacent two first rotating cylinders 540 is equal to the width of the strip-shaped film A, the distance between the adjacent two second rotating cylinders 610 is equal to the width of the strip-shaped film B, and the first rotating cylinders 540 and the second rotating cylinders 610 are staggered with each other.

[0059] It should be explained that the slip shaft is a component for winding the film, and the function of the slip shaft is to allow a certain degree of relative movement between the winding core of the slip shaft and the film during winding, so as to ensure that the film can be tightly wound smoothly without generating excessive tension during winding.

[0060] Referring to FIG. 4, the film slitting machine further comprises a first mounting plate 130, both ends of the first mounting plate 130 in the front-back direction are connected with the rack 100, and the plurality of first traction assemblies 500 are slidably connected with the first mounting plate 130 in the front-back direction. It can be understood that the plurality of first traction assemblies 500 are slidably connected with the first mounting plate 130 in the front-back direction, so that the first rotating cylinders 540 in the plurality of first traction assemblies 500 can adjust the relative position with the whole film according to the slitting condition of the whole film, so that the plurality of first rotating cylinders 540 can adapt to the plurality of strip-shaped films A, and the applicability of the first traction assembly 500 is improved.

[0061] Referring to FIG. 7, the film slitting machine further comprises a first sliding rail 131 and a first sliding block 132, both ends of the first mounting plate 130 in the front-back direction are detachably connected with the rack 100, the first traction assembly 500 further comprises a first mounting seat 550, the first mounting seat 550 is connected with the first mounting cylinder 520, the first sliding rail 131 is parallel to the front-back direction and is arranged on the first mounting plate 130, the first sliding block 132 is connected with the first mounting seat 550, and the first sliding block 132 is slidably connected with the first sliding rail 131. It can be understood that both ends of the first mounting plate 130 in the front-back direction are detachably connected with the rack 100, the first mounting seat 550 is slidably connected with the first sliding rail 131 through the first sliding block 132, the operator can detach the first mounting plate 130 from the rack 100 and detach the first mounting seat 550 from the first sliding rail 131, so that the operator can increase or reduce the number of the first traction assemblies 500 according to the slitting condition of the whole film, so as to improve the applicability of the film slitting machine.

[0062] Referring to FIGS. 7 and 8, the first traction assembly 500 further comprises a first adapter sleeve 530 sleeved on the first mounting sleeve 520, and a first rotating sleeve 540 rotatably sleeved on the first adapter sleeve 530. The first mounting sleeve 520 is provided with a first guide hole 521 parallel to the front-rear direction. The first linear drive assembly 510 comprises a first motor 511, a first screw rod 513, a first nut 512 and a first connecting rod 514. The first screw rod 513 is parallel to the front-rear direction. One end of the first screw rod 513 is rotatably connected to the first mounting sleeve 520, and the other end of the first screw rod 513 is connected to the output end of the first motor 511. The first nut 512 is threadedly connected to the first screw rod 513. The first connecting rod 514 is arranged in the first guide hole 521. The upper end of the first connecting rod 514 is connected to the first adapter sleeve 530, and the lower end of the first connecting rod 514 is connected to the first nut 512.

[0063] It can be understood that the first motor 511 drives the first screw rod 513 to rotate, and the first screw rod 513 drives the first nut 512 and the first connecting rod 514 to move along the front-rear direction, so that the first connecting rod 514 can drive the first adapter sleeve 530 to move along the front-rear direction, and then the first adapter sleeve 530 drives the first rotating sleeve 540 to move along the front-rear direction. As an embodiment of the present application, the first rotating sleeve 540 is rotatably sleeved on the first adapter sleeve 530 through a first bearing.

[0064] In the embodiment of the present application, the film slitting machine further comprises a second mounting plate 140, both front and rear ends of the second mounting plate 140 are detachably connected to the rack 100, and the second mounting plate 140 is provided with a second sliding rail parallel to the front-rear direction. The second traction assembly 600 is slidably connected to the second sliding rail through a second sliding block. The second traction assembly 600 is completely identical in structure to the first traction assembly 500, and the first linear drive assembly 510 is completely identical in structure to the second linear drive assembly. The difference lies in that a plurality of second traction assemblies 600 are used to traction a plurality of strip-shaped films B, and the beneficial effects brought by the second traction assembly 600 and the first traction assembly 500 are also the same, which will not be discussed here.

[0065] Referring to FIG. 4, the film slitting machine further comprises a first mounting rod 150 parallel to the front-rear direction, both front and rear ends of the first mounting rod 150 are connected with the rack 100, and a plurality of first offset detection assemblies 300 are slidably connected to the first mounting rod 150 in the front-rear direction. It can be understood that the plurality of first offset detection assemblies 300 are slidably connected to the first mounting rod 150 in the front-rear direction, so that the first offset detection assembly 300 can adjust the position of the first offset detection assembly 300 on the first mounting rod 150 according to the slitting condition of the whole film, so that the plurality of first offset detection assemblies 300 can respectively and accurately detect the offset of the plurality of strip-shaped films, which is beneficial to improve the applicability of the first offset detection assembly 300.

[0066] Referring to FIGS. 4, 5 and 9, both front and rear ends of the first mounting rod 150 are detachably connected to the rack 100, the first offset detection assembly 300 comprises a first connecting piece 310, a first mounting block 320 and a first distance sensor 330, one end of the first connecting piece 310 is slidably sleeved on the first mounting rod 150 in the front-rear direction, the first mounting block 320 is rotatably connected to the other end of the first connecting piece 310, the first mounting block 320 is provided with a first mounting opening 321, and the first distance sensor 330 is arranged on the inner wall of the first mounting opening 321. The area in the first mounting opening 321 corresponding to the first distance sensor 330 is used for allowing one of the strip-shaped films to pass through. It can be understood that both front and rear ends of the first mounting rod 150 are detachably connected to the rack 100, the operator can detach the first mounting rod 150 from the rack 100, and can detach the first connecting piece 310 from the first mounting rod 150, so that the operator can increase or reduce the number of offset detection assemblies according to the slitting condition of the whole film, so as to improve the applicability of the film slitting machine.

[0067] It can be understood that the single strip-shaped film A is arranged in the first mounting opening 321 on the first mounting block 320, and the first distance sensor 330 is used to detect the distance from the first distance sensor 330 to the side surface of the single strip-shaped film A. When the distance value detected by the first distance sensor 330 falls within the qualified offset range, it means that the position of the strip-shaped film A currently detected is qualified. When the strip-shaped film A is offset in the front-rear direction, and the distance value detected by the first distance sensor 330 falls outside the qualified offset range, it means that the offset distance of the strip-shaped film A is too large, at this time the first rotating cylinder 540 drives the strip-shaped film A to move in the front-rear direction, so that the distance value detected by the first distance sensor 330 can fall within the qualified offset range. The distance sensor is used to detect the offset of the film, which is a common way, and will not be described further here.

[0068] In the embodiment of the present application, the film slitting machine further comprises a second mounting rod 160, both front and rear ends of the second mounting rod 160 are detachably connected to the rack 100, and a plurality of second offset detection assemblies 400 are slidably connected to the second mounting rod 160 in the front-rear direction. The second offset detection assembly 400 is completely identical in structure to the first offset detection assembly 300, and the difference lies in that the second offset detection assembly 400 is used for detecting the offset of the strip-shaped film B, and the beneficial effects brought by the second offset detection assembly 400 and the first offset detection assembly 300 are also the same, which will not be discussed here.

[0069] Referring to FIGS. 1 and 2, the slitting device 200 comprises a knife shaft 210, a knife holder 220, a plurality of blades 221 and a plurality of round-bottom knives 211, the knife shaft 210 is parallel to the front-rear direction, both front and rear ends of the knife shaft 210 are rotatably connected to the rack 100, the plurality of round-bottom knives 211 are linearly arrayed on the knife shaft 210 in the front-rear direction, the knife holder 220 is arranged on the rack 100, the knife holder 220 is arranged above the knife shaft 210, the plurality of blades 221 are linearly arrayed on the knife holder 220 in the front-rear direction, the plurality of blades 221 are arranged one by one corresponding to the plurality of round-bottom knives 211, and the gap between the plurality of blades 221 and the plurality of round-bottom knives 211 is used for the whole film to pass through, so that the plurality of blades 221 and the plurality of round-bottom knives 211 can cut the whole film into a plurality of strip-shaped films. It can be understood that the gap between the plurality of blades 221 and the plurality of round-bottom knives 211 is used for the whole film to pass through, the knife shaft 210 drives the plurality of round-bottom knives 211 to rotate, so that the plurality of round-bottom knives 211 and the plurality of blades 221 can slit the whole film to obtain a plurality of strip-shaped films.

[0070] Referring to FIGS. 1 and 2, the film slitting machine further comprises a heating device 700, the heating device 700 is arranged on the rack 100, and the heating device 700 is used for heating part of the whole film between the plurality of blades 221 and the plurality of round-bottom knives 211. It can be understood that under the action of the round-bottom knife 211 and the blade 221, the whole film will accumulate internal stress during slitting, especially near the cutting area of the round-bottom knife 211 and the blade 221, the whole film and the plurality of strip-shaped films will appear uneven tension due to internal stress accumulation, and then the plurality of strip-shaped films will appear offset. The heating device 700 can heat part of the whole film between the plurality of blades 221 and the plurality of round-bottom knives 211, so that the internal stress of the whole film and the plurality of strip-shaped films in the area of the round-bottom knife 211 and the blade 221 can be released and relaxed, and then the tension distribution of the whole film and the plurality of strip-shaped films is more uniform, and then it is beneficial to improve the yield of the slitted strip-shaped film.

[0071] As an embodiment of the present application, the heating device 700 is an infrared heater. It can be understood that the infrared heater directly transmits heat energy to the surface of the whole film by using the principle of converting electric energy into infrared radiation heat energy, so that the whole film and the plurality of strip films at the area of the plurality of round-bottom knives 211 and the plurality of blades 221 can be uniformly heated.

[0072] Referring to FIG. 1, the unwinding device 800 comprises a stretching and shrinking roller 810 for sleeving the whole film in a roll and a rotary driving mechanism for driving the stretching and shrinking roller 810 to rotate, so that the whole film in a roll can be unwound from left to right.

[0073] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0074] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A film slitter, characterized by, The application relates to a film cutting and winding device. The device comprises: a film unwinding device for unwinding a whole film from left to right; a frame arranged on the right of the film unwinding device; a film cutting device arranged on the frame, the film cutting device being used for cutting the whole film so that the whole film is cut into a plurality of strip films; a plurality of first offset detection assemblies, each of the first offset detection assemblies being arranged on the right of the film cutting device, the first offset detection assemblies being distributed on the frame in the front-rear direction, and each of the first offset detection assemblies being used for detecting the offset of a part of the strip films; a plurality of first traction assemblies, the first traction assemblies being distributed on the frame in the front-rear direction, each of the first traction assemblies comprising a first rotating drum and a first mounting cylinder, the first rotating drum being rotatably sleeved on the first mounting cylinder, and each of the first rotating drums being used for winding a part of the strip films; a plurality of first linear drive assemblies, each of the first linear drive assemblies being arranged in the first mounting cylinder, each of the first linear drive assemblies being electrically connected with the first offset detection assemblies, and each of the first linear drive assemblies being used for driving the first rotating drums to move in the front-rear direction so that the offsets of the parts of the strip films wound on the first rotating drums can all fall within a qualified offset range; a first slip shaft arranged on the right of the first traction assemblies, the front and rear ends of the first slip shaft being rotatably connected with the frame, and the first slip shaft being used for winding a part of the strip films; a plurality of second offset detection assemblies, each of the second offset detection assemblies being arranged on the right of the film cutting device, the second offset detection assemblies being distributed on the frame in the front-rear direction, and each of the second offset detection assemblies being used for detecting the offset of another part of the strip films; a plurality of second traction assemblies, the second traction assemblies being distributed on the frame in the front-rear direction, each of the second traction assemblies comprising a second rotating drum and a second mounting cylinder, the second rotating drum being rotatably sleeved on the second mounting cylinder, and each of the second rotating drums being used for winding another part of the strip films; a plurality of second linear drive assemblies, each of the second linear drive assemblies being arranged in the second mounting cylinder, each of the second linear drive assemblies being electrically connected with the second offset detection assemblies, and each of the second linear drive assemblies being used for driving the second rotating drums to move in the front-rear direction so that the offsets of the other parts of the strip films wound on the second rotating drums can all fall within the qualified offset range; a second slip shaft arranged on the right of the second traction assemblies, the second slip shaft being arranged below the first slip shaft, the front and rear ends of the second slip shaft being rotatably connected with the frame, and the second slip shaft being used for winding another part of the strip films.

2. The film slitter according to claim 1, characterized in that: The first installation plate is connected with the rack at both front and back ends, and the first traction assembly is slidably connected with the first installation plate in the front-back direction.

3. The film slitter according to claim 2, wherein: The first installation plate is detachably connected with the rack at both front and back ends, the first traction assembly further comprises a first mounting seat connected with the first installation cylinder, the first sliding rail is parallel to the front-back direction and arranged on the first installation plate, and the first sliding block is connected with the first mounting seat and slidably connected with the first sliding rail.

4. The film slitter according to claim 2, wherein: The first traction assembly further comprises a first adapter cylinder sleeved on the first installation cylinder, the first rotating cylinder is rotatably sleeved on the first adapter cylinder, a first guide hole parallel to the front-back direction is formed in the first installation cylinder, the first linear driving assembly comprises a first motor, a first screw rod, a first nut and a first connecting rod, the first screw rod is parallel to the front-back direction, one end of the first screw rod is rotatably connected with the first installation cylinder, the other end of the first screw rod is connected with the output end of the first motor, the first nut is threadedly connected with the first screw rod, the first connecting rod is arranged in the first guide hole, the upper end of the first connecting rod is connected with the first adapter cylinder, and the lower end of the first connecting rod is connected with the first nut.

5. The film slitter according to claim 1, wherein: The first installation rod is parallel to the front-back direction, and the first installation rod is connected with the rack at both front and back ends.

6. The film slitter according to claim 5, wherein: The first installation rod is detachably connected with the rack at both front and back ends, the first offset detection assembly comprises a first connecting piece, a first mounting block and a first distance sensor, one end of the first connecting piece is slidably sleeved on the first installation rod in the front-back direction, the first mounting block is rotatably connected to the other end of the first connecting piece, a first mounting opening is formed in the first mounting block, the first distance sensor is arranged on the inner wall of the first mounting opening, and the area in the first mounting opening corresponding to the first distance sensor is used for allowing one of the strip-shaped films to pass through.

7. The film slitter according to claim 1, wherein: The slitting device comprises a knife shaft, a knife holder, a plurality of blades and a plurality of round-bottom knives, the knife shaft is parallel to the front-back direction, the front and back ends of the knife shaft are rotatably connected with the rack, the round-bottom knives are linearly arranged on the knife shaft in the front-back direction, the knife holder is arranged on the rack, the knife holder is arranged above the knife shaft, the blades are linearly arranged on the knife holder in the front-back direction, the blades and the round-bottom knives are arranged one by one, the gap between the blades and the round-bottom knives is used for allowing the whole film to pass through, so that the blades and the round-bottom knives can cut the whole film into a plurality of strip-shaped films.

8. The film slitter according to claim 7, wherein: The heating device is arranged on the rack, and the heating device is used for heating part of the whole film between the blades and the round-bottom knives.

9. The film slitter according to claim 8, wherein: The heating device is an infrared heater.

10. The film slitter according to claim 1, wherein: The unwinding device comprises an expanding and contracting roller for accommodating the whole film roll and a rotating driving mechanism for driving the expanding and contracting roller to rotate to unwind the whole film roll.

Images