Cutter structure capable of automatically winding and unwinding

Abstract

The invention relates to the technical field of cutting devices, and particularly discloses an automatic winding and unwinding cutter structure which comprises an electric heating wire cutter and two driving devices horizontally and oppositely distributed. The driving device comprises a linear motion mechanism, a swing mechanism, a tightening mechanism and a support; the linear motion mechanism is rotationally connected with the support, and the linear motion mechanism is used for driving the swing mechanism and the tightening mechanism to do linear motion; the swinging mechanism is used for driving the tightening mechanism to swing; the end part of the electric heating wire cutter is connected with the tightening mechanism, and the tightening mechanism is used for adjusting the tension degree of the electric heating wire cutter; according to the automatic winding and unwinding cutter structure, the tension degree is convenient to adjust, the whole mechanism is small in size, and the problems that during automatic winding and unwinding, cut film materials are uneven, and an electric heating wire cutter is prone to loosening or losing efficacy are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, and in particular to a cutter structure for automatically retracting and unreeling a roll. Background Art

[0002] The automatic rewinding and unwinding equipment for lithium battery isolation, when the rewinding and unwinding material roll is about to be full or empty, the rewinding and unwinding turret, approach roller and cutter cooperate to quickly connect the film to the new material roll to complete the automatic reel change. With the continuous development and progress of technology, the automatic rewinding and unwinding cutter device of the micro-concave coating equipment has been optimized from the bulky swing arm steel cutter to the current simple flat push rotary hot melt cutter, which improves the film splicing speed and success rate, improves the film cut flatness and the problem of easy relaxation or failure of the electric heating wire tension. With the increase in speed, the stability and problem points of the equipment are gradually exposed.

[0003] The specific issues are as follows:

[0004] 1. The actual size of the new roll cannot be measured correctly. Only the approximate roll diameter can be detected by edge sensing, which can easily lead to the inability of the new roll to synchronize with the main machine line speed, sudden changes in tension when changing rolls, and uneven material connection, which is easy to wrinkle.

[0005] 2. The cylinder and large swing arm structure have certain position requirements for the turret and swing arm rotation fulcrum. Due to the extremely large rotation distance, the equipment cost and the occupied site area are increased.

[0006] 3. The large swing arm cutter uses a traditional steel cutter, which will make the cutting edge of the film uneven. When the tail material is rolled up, the material roll will be wrinkled and creased.

[0007] 4. The spring-type tensioning mechanism of the hot melt cutter will easily become loose and fail due to fatigue after being used for a period of time, thereby reducing the rigidity of the hot cutting blade and causing the diaphragm to be unable to be cut. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides an automatic retractable cutter structure, the tension of the electric heating wire cutter is easy to adjust, the whole structure is small in size, and the problems of uneven film cutting during automatic retractable film cutting and easy loosening or failure of the electric heating wire cutter are solved.

[0009] To solve the above problems, the present invention adopts the following technical solutions:

[0010] A cutter structure for automatic rewinding and unwinding comprises an electric heating wire cutter and two driving devices which are horizontally opposite to each other.

[0011] The driving device comprises a linear motion mechanism, a swing mechanism, a tensioning mechanism and a support.

[0012] The linear motion mechanism is rotatably connected to the support, and is used to drive the swing mechanism and the tensioning mechanism to move linearly.

[0013] The swing mechanism is used to drive the tensioning mechanism to swing.

[0014] The end of the electric heating wire cutter is connected to the tightening mechanism, and the tightening mechanism is used to adjust the tension of the electric heating wire cutter.

[0015] In the automatic retractable cutter structure provided in at least one embodiment of the present disclosure, the tightening mechanism includes a first linear drive and an insulating block.

[0016] The output end of the first linear drive is fixedly connected to the insulating block.

[0017] The insulating block is fixedly connected to the electric heating wire cutter.

[0018] In the automatic retractable cutter structure provided by at least one embodiment of the present disclosure, the swing mechanism includes a front fixed seat, a rear fixed seat, a swing arm and a second linear drive.

[0019] The front fixing seat is rotatably connected to the swing arm.

[0020] Two ends of the second linear actuator are rotatably connected to the swing arm and the rear fixed seat respectively.

[0021] In the automatic retractable and rewindable cutter structure provided in at least one embodiment of the present disclosure, a mounting block is provided at the front end of the front fixing seat, and anti-collision rubber is arranged on the mounting block.

[0022] The anti-collision rubber is located on one side of the swing arm, and there is a gap between the anti-collision rubber and the swing arm.

[0023] In the automatic retractable cutter structure provided in at least one embodiment of the present disclosure, the linear motion mechanism includes a third linear drive, a linear guide rail, a slider, a mounting plate and a push plate.

[0024] The slider is slidably arranged on the linear guide rail, and the slider is fixedly connected to the mounting plate.

[0025] The push plate is fixedly connected to the mounting plate.

[0026] The two ends of the third linear drive are rotatably connected to the push plate and the support respectively.

[0027] The front fixing seat and the rear fixing seat are both fixedly connected to the mounting plate.

[0028] In the automatic retractable cutter structure provided by at least one embodiment of the present disclosure, the first linear drive, the second linear drive and the third linear drive are all servo cylinders.

[0029] In the automatic retractable cutter structure provided by at least one embodiment of the present disclosure, the second linear drive is fixedly provided with a first fisheye joint.

[0030] The swing arm is provided with a first pin shaft, and the second linear drive and the swing arm are rotationally connected through the first fisheye joint and the first pin shaft.

[0031] In the automatic retractable and rewindable cutter structure provided in at least one embodiment of the present disclosure, the third linear drive is fixedly provided with a second fisheye joint.

[0032] The push plate is provided with a second pin shaft, and the third linear drive and the push plate are rotatably connected via the second fisheye joint and the second pin shaft.

[0033] In the automatic retractable and rewindable cutter structure provided in at least one embodiment of the present disclosure, the third linear drive is parallel to the mounting plate.

[0034] In the automatic retractable and rewindable cutter structure provided in at least one embodiment of the present disclosure, a connecting frame is provided on the swing arm.

[0035] The swing arm and the first linear drive are both fixedly connected to the connecting frame, and the first linear drive is suspended below the swing arm.

[0036] The beneficial effects of the present invention are: simple structure, easy operation, simple and convenient adjustment of the tension of the electric heating wire cutter, which solves the problems of uneven diaphragm cuts and easy relaxation or failure of the electric heating wire cutter when the diaphragm roll is automatically reeled and unreeled.

[0037] Compatible with different length and width specifications of membranes, easy to disassemble and assemble, greatly reducing equipment costs.

[0038] The phenomenon of bottom wrinkles during winding is reduced, and the diaphragm loss is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 The present invention is a schematic structural diagram of a cutter structure for automatic rewinding and unwinding.

[0041] Figure 2A schematic diagram of the structure of the driving device.

[0042] Figure 3 Schematic diagram of the component distribution of the linear motion mechanism.

[0043] Figure 4 Schematic diagram of the component distribution of the swing mechanism.

[0044] Figure 5 It is a schematic diagram of the connection between the electric heating wire cutter and the insulating block.

[0045] Figure 6 Schematic diagram of the component distribution of the tensioning mechanism.

[0046] Figure 7 This is a schematic diagram of the structure of the drive device after some components are disassembled.

[0047] Figure 8 This is a schematic diagram of the structure after the two drive devices are assembled to the frame.

[0048] In the figure:

[0049] 10. Heating wire cutter; 11. Wiring terminal;

[0050] 20. Driving device; 21. Linear motion mechanism; 22. Swinging mechanism; 23. Tensioning mechanism; 24. Support; 231. First linear drive; 232. Insulating block; 221. Front fixed seat; 222. Rear fixed seat; 223. Swing arm; 224. Second linear drive; 225. Mounting block; 226. Anti-collision rubber; 227. First fisheye joint; 211. Third linear drive; 212. Linear guide rail; 213. Slider; 214. Mounting plate; 215. Push plate; 216. Second fisheye joint.

[0051] 30. Connecting frame;

[0052] 40. Rack. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0054] like Figure 1 As shown, this embodiment provides an automatic retractable cutter structure, comprising: an electric heating wire cutter 10 and two drive devices 20 arranged horizontally opposite to each other.

[0055] like Figure 2 and 3 As shown, in this embodiment, the driving device 20 includes a linear motion mechanism 21 , a swing mechanism 22 , a tensioning mechanism 23 and a support 24 .

[0056] Specifically, the linear motion mechanism 21 is rotatably connected to the support 24, and the linear motion mechanism 21 is used to drive the swing mechanism 22 and the tensioning mechanism 23 to move linearly. The swing mechanism 22 is used to drive the tensioning mechanism 23 to swing. The end of the electric heating wire cutter 10 is connected to the tensioning mechanism 23, and the tensioning mechanism 23 is used to adjust the tension of the electric heating wire cutter 10.

[0057] The specific structure of the tensioning mechanism 23 will be further described below in conjunction with the accompanying drawings.

[0058] like Figure 5 and 6 As shown, the tensioning mechanism 23 includes a first linear drive 231 and an insulating block 232. The output end of the first linear drive 231 is fixedly connected to the insulating block 232. The insulating block 232 is fixedly connected to the electric heating wire cutter 10.

[0059] Specifically, a terminal 11 is fixedly provided at the end of the electric heating wire cutter 10, a screw hole (not shown) is provided on the insulating block 232, and the terminal has a through hole (not shown). The terminal 11 and the insulating block 232 are fixedly connected by bolts, and are easy to disassemble and assemble.

[0060] The active stroke of the first linear drive 231 replaces the compression stroke of the spring in the traditional structure, which can solve the problem of easy relaxation or failure of tensioning. The electric heating wire cutter 10 is tensioned by the first linear drive 231. The first linear drive 231 can not only tension the electric heating wire cutter 10, but also reduce the workload of installing the electric heating wire cutter 10.

[0061] The specific structure of the swing mechanism 22 will be further described below in conjunction with the accompanying drawings.

[0062] like Figure 4 , 6 As shown in FIG. 7 , the swing mechanism 22 includes a front fixed seat 221, a rear fixed seat 222, a swing arm 223 and a second linear actuator 224. The front fixed seat 221 is rotatably connected to the swing arm 223. Both ends of the second linear actuator 224 are rotatably connected to the swing arm 223 and the rear fixed seat 222, respectively.

[0063] Specifically, the output end of the second linear driver 224 is fixedly provided with a first fisheye joint 227. The swing arm 223 is provided with a first pin shaft, and the second linear driver 224 and the swing arm 223 are rotatably connected through the first fisheye joint 227 and the first pin shaft, and the first fisheye joint 227 is limited and fixed by the pin shaft shoulder of the first pin shaft.

[0064] Specifically, a mounting block 225 is disposed at the front end of the front fixing seat 221, and an anti-collision rubber 226 is disposed on the mounting block 225. The anti-collision rubber 226 is located at one side of the swing arm 223, and there is a gap between the anti-collision rubber 226 and the swing arm 223.

[0065] Specifically, a connecting frame 30 is provided on the swing arm 223. The swing arm 223 and the first linear driver 231 are both fixedly connected to the connecting frame 30, and the first linear driver 231 is suspended below the swing arm 223.

[0066] The swing mechanism 22 is similar to a crank rocker mechanism as a whole. By controlling the second linear drive 224, the swing arm 223 is swung rapidly clockwise around the rotation axis. At this time, the tensioned electric heating wire cutter 10 can cut the membrane to be cut, so that the membrane forms a smooth incision.

[0067] The specific structure of the linear motion mechanism 21 will be further described below in conjunction with the accompanying drawings.

[0068] like Figure 3 , 6 As shown in Figure 7, the linear motion mechanism 21 includes a third linear driver 211, a linear guide rail 212, a slider 213, a mounting plate 214 and a push plate 215. The slider 213 is slidably disposed on the linear guide rail 212, and the slider 213 is fixedly connected to the mounting plate 214. The push plate 215 is fixedly connected to the mounting plate 214. The two ends of the third linear driver 211 are rotatably connected to the push plate 215 and the support 24 respectively. The front fixed seat 221 and the rear fixed seat 222 are both fixedly connected to the mounting plate 214.

[0069] Specifically, the output end of the third linear driver 211 is fixedly provided with a second fisheye joint 216. The push plate 215 is provided with a second pin shaft, and the third linear driver 211 and the push plate 215 are rotatably connected through the second fisheye joint 216 and the second pin shaft, and the second fisheye joint 216 is limited and fixed by the pin shaft shoulder of the second pin shaft.

[0070] Specifically, the third linear drive 211 is parallel to the mounting plate 214 .

[0071] The linear motion mechanism 21 and the swing mechanism 22 form a hinged structure. The swing mechanism 22 can be reciprocated along the linear guide rail 212 by controlling the linear motion mechanism 21. The swing mechanism 22 can be positioned to the pre-cutting position of the diaphragm by the linear motion mechanism 21.

[0072] In some embodiments, the first linear drive 231 , the second linear drive 224 , and the third linear drive 211 are all servo cylinders.

[0073] In some embodiments, the first linear drive 231 , the second linear drive 224 , and the third linear drive 211 are all electric telescopic rods.

[0074] like Figure 8 As shown, in some embodiments, the automatic rewinding and unwinding cutter structure further includes a frame 40, and the support and the linear guide rail are both fixedly connected to the frame.

[0075] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless explicitly stated, any elements, actions or instructions used in this document should not be interpreted as critical or necessary.

Claims

1. A cutter structure for automatic rewinding and unwinding, characterized in that: include: Electric heating wire cutter and two drive devices arranged horizontally opposite to each other; The driving device comprises a linear motion mechanism, a swing mechanism, a tensioning mechanism and a support; The linear motion mechanism is rotatably connected to the support, and the linear motion mechanism is used to drive the swing mechanism and the tensioning mechanism to move linearly; The swing mechanism is used to drive the tensioning mechanism to swing; The end of the electric heating wire cutter is connected to the tightening mechanism, and the tightening mechanism is used to adjust the tension of the electric heating wire cutter.

2. The automatic rewinding and unwinding cutter structure according to claim 1, characterized in that: The tightening mechanism includes a first linear drive and an insulating block; The output end of the first linear drive is fixedly connected to the insulating block; The insulating block is fixedly connected to the electric heating wire cutter.

3. The cutter structure for automatic rewinding and unwinding of claim 2, characterized in that: The swing mechanism comprises a front fixed seat, a rear fixed seat, a swing arm and a second linear drive; The front fixing seat is rotatably connected to the swing arm; Two ends of the second linear actuator are rotatably connected to the swing arm and the rear fixed seat respectively.

4. The automatic retractable cutter structure according to claim 3, characterized in that: A mounting block is provided at the front end of the front fixing seat, and an anti-collision rubber is arranged on the mounting block; The anti-collision rubber is located on one side of the swing arm, and there is a gap between the anti-collision rubber and the swing arm.

5. The cutter structure for automatic rewinding and unwinding according to claim 3, characterized in that: The linear motion mechanism comprises a third linear drive, a linear guide rail, a slider, a mounting plate and a push plate; The slider is slidably arranged on the linear guide rail, and the slider is fixedly connected to the mounting plate; The push plate is fixedly connected to the mounting plate; The two ends of the third linear drive are rotatably connected to the push plate and the support respectively; The front fixing seat and the rear fixing seat are both fixedly connected to the mounting plate.

6. The cutter structure for automatic rewinding and unwinding according to claim 5, characterized in that: The first linear drive, the second linear drive and the third linear drive are all servo cylinders.

7. The automatic retractable cutter structure according to claim 3, characterized in that: The second linear drive is fixedly provided with a first fisheye joint; The swing arm is provided with a first pin shaft, and the second linear drive and the swing arm are rotationally connected through the first fisheye joint and the first pin shaft.

8. The automatic retractable cutter structure according to claim 7, characterized in that: The third linear drive is fixedly provided with a second fisheye joint; The push plate is provided with a second pin shaft, and the third linear drive and the push plate are rotatably connected via the second fisheye joint and the second pin shaft.

9. The cutter structure for automatic rewinding and unwinding according to claim 5, characterized in that: The third linear drive is parallel to the mounting plate.

10. The cutter structure for automatic rewinding and unwinding of claim 3, characterized in that: A connecting frame is provided on the swing arm; The swing arm and the first linear drive are both fixedly connected to the connecting frame, and the first linear drive is suspended below the swing arm.

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