CN209896204U

CN209896204U - Unwinding device and lamination machine

Info

Publication number: CN209896204U
Application number: CN201921003301.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-01-03
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses an unwinding device and a laminating machine, wherein the unwinding device comprises a first supporting plate; the unwinding assembly is mounted on a first plate surface of the first supporting plate and comprises a first driving mechanism, a clamping roller seat and a first clamping roller group, the first driving mechanism drives the clamping roller seat along a first direction parallel to the first plate surface, and the first clamping roller group is rotatably arranged on the clamping roller seat and comprises two first clamping rollers for clamping a film; the second supporting plate and the first supporting plate are arranged in parallel; the sensing assembly is installed on the second face of the second supporting plate and comprises a sensor installation seat and a sensor arranged on the sensor installation seat, the sensor installation seat extends to the clamping roller seat along the second direction, the sensor can further conduct position detection on the film clamped by the two first clamping rollers, the sensor installation seat is arranged to move along the first direction along with the clamping roller seat, the clamping roller seat slides relative to the sensor installation seat in the second direction, and the displacement of the film can be detected.

Description

Unwinding device and lamination machine

Technical Field

The utility model relates to an automation equipment technical field especially relates to an unwinding device and lamination machine.

Background

The lithium battery cell can be manufactured by a winding or lamination process, wherein the lamination mode has a Z-shaped lamination process. In the prior art, a diaphragm unwinding mechanism is used for unwinding a diaphragm, a Z-shaped lamination table in a Z-shaped lamination machine moves left and right to pull the diaphragm and move a pole piece to the lamination table, and Z-shaped lamination is completed. Because this mode lamination platform not only needs to move about and still need reciprocate simultaneously, this lamination mode can lead to the lamination inefficiency, so need a technical scheme that can solve above-mentioned technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a sensing element can unreel the subassembly relatively and carry out independent motion's unwinding device and lamination machine on the direction of rectifying.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides an unwinding device, unwinding device includes:

a first support plate;

the unwinding assembly is mounted on a first plate surface of the first supporting plate and comprises a first driving mechanism, a clamping roller seat and a first clamping roller group, the first driving mechanism drives the clamping roller seat along a first direction parallel to the first plate surface, the first clamping roller seat is arranged on the clamping roller seat and comprises two first clamping rollers for clamping a film, and rotating shafts of the two first clamping rollers are arranged along a second direction perpendicular to the first plate surface;

the second supporting plate is arranged in parallel with the first supporting plate;

the sensing assembly is installed on the second plate surface of the second supporting plate and comprises a sensor installation seat and a sensor arranged on the sensor installation seat, the sensor installation seat extends towards the roller clamping seat along the second direction, so that the sensor can detect the position of the film clamped by the two first clamping rollers, wherein the sensor installation seat is arranged to follow the roller clamping seat along the first direction and move along the second direction and the roller clamping seat move independently relatively.

The unwinding device further comprises a deviation rectifying mechanism, and the deviation rectifying mechanism is used for conveying the first supporting plate to move relative to the second supporting plate along the second direction according to the deviation of the actual position of the film, detected by the sensor, relative to the preset position.

Further, the sensor mounting seat extends along the second direction and is connected with the second supporting plate in a sliding mode, the sensor mounting seat is arranged on the first direction and is opposite to the second supporting plate in a sliding mode, a first sliding block and a first linear guide rail are arranged on the sensor mounting seat and the roller clamping seat respectively, the first linear guide rail extends along the second direction, the first sliding block is connected with the first linear guide rail in a sliding mode, so that when the first driving mechanism drives the roller clamping seat in the first direction, the first sliding block and the first linear guide rail move synchronously in the first direction, and when the deviation rectifying mechanism drives the first supporting plate in the second direction, the first sliding block and the first linear guide rail slide oppositely in the second direction.

Still further, be provided with respectively on the first face with the second face along second linear guide and the third linear guide that first direction extends, press from both sides the roller seat with the decibel is provided with second slider and third slider on the sensor mount pad, second slider and third slider be used for with press from both sides the roller seat with the sensor mount pad sliding connection respectively to second linear guide and third linear guide.

The sensing assembly further comprises a sensor support which is vertically connected with the sensor mounting seat, a notch for the edge of the film to pass through is formed in the end part, far away from the sensor mounting seat, of the sensor support, and the sensor is arranged on at least one side of the notch to detect the position information of the edge of the film.

Furthermore, a waist-shaped hole is formed in the sensor support, the length direction of the waist-shaped hole is arranged along the second direction, the sensor support is fixedly connected with the sensor mounting seat through the waist-shaped hole and a fastening piece, and the position of the sensor support can be adjusted relative to the sensor support along the second direction.

The unwinding assembly further comprises a second clamping roller group arranged on the clamping roller seat, and the second clamping roller group is rotatably arranged on the clamping roller seat and is spaced from the first clamping roller group; the first pinch roll combination is still provided with at least one first roller between the second pinch roll group, first roller setting is crossed on the pinch roll seat, first pinch roll combination the film between the second pinch roll group is around passing through a plurality of first rollers.

Unreel the subassembly and include:

the unwinding roller is arranged on the first plate surface and used for unwinding the film;

tension adjustment mechanism, tension adjustment mechanism is located unreel the roller with between the pinch-roller seat, including a plurality of seconds cross the roller and at least one tension pendulum roller, a plurality of seconds are crossed the roller interval and are set up on the first face, the film that unreels the roller and release is in proper order around passing through a plurality of seconds cross the roller, tension pendulum roller sets up on the first face, be used for the adjustment the rate of tension of film.

Further, the unwinding assembly comprises a buffer assembly, the buffer assembly is located between the clamping roller seat and the tension adjusting mechanism and comprises a vertical plate, and a second driving mechanism, a moving block, a buffer roller, a third roller and a third clamping roller group which are arranged on the vertical plate, the film sequentially passes through the third roller, the buffer roller and the third clamping roller group, the buffer roller is arranged on the moving block, the second driving mechanism drives the moving block to enable the buffer roller to change the position relative to the third roller and the third clamping roller group, and then the length of the film buffered between the third roller and the third clamping roller group is changed to enable the film between the buffer assembly and the first clamping roller group to keep a preset tension degree.

In order to solve the technical problem, the utility model discloses a technical scheme be: providing a lamination machine, wherein the lamination machine comprises a lamination assembly and an unwinding device, the lamination assembly comprises a lamination table and a lamination table driving assembly used for driving the lamination table, and the lamination table driving assembly is used for driving the lamination table to move in a third direction perpendicular to the first direction and the second direction;

the unwinding device is used for unwinding a film to the laminating table for laminating, and the unwinding device is the unwinding device.

The utility model has the advantages that: be different from prior art's condition, the utility model discloses a be provided with by the sensing subassembly that unreels the subassembly linkage in the first direction, the independent motion that relative sensing subassembly can be done to the subassembly of unreeling in the second direction is in order to rectify a deviation to the film, and with sensing subassembly motion mutually independent unwinding device, when having realized rectifying a deviation to the film, it does not link sensing subassembly to unreel the subassembly in the second direction, and then make sensing subassembly carry out more accurate position detection to the film, can also adapt to the product structure of the novel lamination machine that includes only carry out the lamination platform that removes in vertical direction simultaneously, good technological effect has been played.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of an unwinding device of the present invention;

fig. 2 is a schematic structural view of another embodiment of the unwinding device of the present invention;

fig. 3 is a schematic structural view of another embodiment of the unwinding device of the present invention;

fig. 4 is a schematic structural diagram of an embodiment of the lamination stacking machine of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "comprising" and "having," as well as any variations thereof, in the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an unwinding device of the present invention. The unwinding device 100 in the current embodiment includes a first support plate 10, an unwinding assembly 20, a second support plate 30, and a sensing assembly 40.

Wherein, the first supporting plate 10 is used for supporting the unwinding assembly 20. Specifically, the unwinding assembly 20 is mounted on the first panel surface of the first support plate 10, and includes a first driving mechanism 21, a nip roller holder 22 and a first nip roller set 23. The first nip roller group 23 is rotatably disposed on the nip roller holder 22 and includes two

first nip rollers

231 and 232 for nipping the film 1, and rotation shafts of the two

first nip rollers

231 and 232 are disposed in a second direction perpendicular to the first plate surface. The first driving mechanism 21 drives the nip roller holder 22 and the first nip roller set 23 disposed on the nip roller holder 22 along a first direction parallel to the first plate surface, so as to drive the film 1 held by the

first nip rollers

231 and 232 to move along the moving direction of the nip roller holder 22. Further, in another embodiment, the surfaces of the two

first nip rollers

231 and 232 are adjacent, and the film 1 passes between the two

first nip rollers

231 and 232, preferably, the rotation centers of the two

first nip rollers

231 and 232 are in the same horizontal line. Wherein the membrane 1 comprises at least a membrane for lamination.

The first driving mechanism 21 includes a linear motor, the first direction is a direction parallel to the first plate surface of the first support plate 10, and the second direction is a direction perpendicular to the first plate surface. The second support plate 30 is disposed in parallel with the first support plate 10, and at least serves to support the sensing assembly 40. Further, in another embodiment, the second supporting plate 30 and the first supporting plate 10 are spaced apart by a predetermined distance in the second direction and are disposed in parallel, so that the deviation rectifying assembly does not touch the second supporting plate 30 when driving the first supporting plate 10 to reciprocate in the second direction during the deviation rectifying process. Still further, the second support plate 30 does not overlap with the first support plate 10 in the front view direction. Wherein, the distance between the first support plate 10 and the second support plate 30 can be set according to the parameters of the product.

Please refer to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the unwinding device of the present invention, and fig. 2 specifically shows a top view structure of the sensing component 40. The sensing assembly 40 is installed on the second plate surface of the second supporting plate 30, and is configured to detect the position of the film 1 to determine whether the film 1 deviates, and feed back the detection result to the control system, so that the control system (not shown) determines whether the deviation correction processing needs to be performed on the film 1 according to the detection result of the sensing assembly 40. The second plate surface is an end surface of the second support plate 30 in the same direction as the first plate surface of the first support plate 10. Specifically, the sensing assembly 40 includes a sensor mount 41 and a sensor 42 disposed on the sensor mount 41.

In different embodiments, the sensor 42 may be directly mounted on the sensor mounting seat 41, or may be indirectly mounted on the sensor mounting seat 41, and is specifically configured according to needs, and is not limited herein. The sensor 42 may include a photoelectric sensor, an infrared sensor, and the specific type of the sensor 42 is not limited in the current embodiment.

Still further, in yet another embodiment, the number of sensors 42 included in the sensing assembly 40 is not limited. As illustrated in fig. 2, the sensing assembly 40 may include two sensors 42 for detecting the position information of the film 1, and further determining whether the position of the film 1 is shifted from the predetermined position, so as to achieve more accurate position detection.

The sensor mount 41 extends in the second direction toward the nip roller holder 22, so that the sensor 42 can detect the position of the film 1 nipped by the two first nip

rollers

231 and 232. Wherein, sensor mount pad 41 sets to and follows pinch roll seat 22 along the first direction and moves, and pinch roll seat 22 can slide in the second direction relative to sensor mount pad 41 on the second direction, can realize when pinch roll seat 22 moves along the first direction, can link sensor mount pad 41 and move along the first direction to unreel film 1 to the lamination bench, when pinch roll seat 22 moved along the second direction, then can not link sensor mount pad 41 and move on the second direction.

In the embodiment corresponding to fig. 1, the sensing assembly linked by the unwinding assembly is arranged in the first direction, the unwinding assembly can independently move relative to the sensing assembly in the second direction to correct the deviation of the film, and the unwinding device is independent of the sensing assembly, so that the unwinding assembly does not link the sensing assembly in the second direction when the deviation of the film is corrected, the sensing assembly can accurately detect the position of the film, and meanwhile, the unwinding device can be well adapted to the product structure of a novel laminating machine comprising a laminating table which moves only in the vertical direction, and a good technical effect is achieved.

Further, the utility model provides an unwinding device further includes the mechanism of rectifying (fig. 1 not shown), and the mechanism of rectifying is used for rectifying to the film 1 that takes place the skew and handles. Further, the deviation rectifying mechanism is used for driving the first supporting plate 10 in the second direction according to the deviation amount of the actual position of the film 1 detected by the sensor 42 relative to the preset position, so that the first supporting plate 10 moves relative to the second supporting plate 30 to rectify the deviation of the film 1 clamped by the

first clamping rollers

231 and 232.

The deviation correcting mechanism at least comprises a cylinder, an electric cylinder or a motor and other structures capable of outputting driving force, so that the first supporting plate 10 is driven to reciprocate relative to the second supporting plate 30 along the second direction, and the deviation correction of the film 1 is realized. Still further, the deviation rectifying mechanism can also output deviation rectifying driving forces with different sizes according to the deviation amount of the film 1 detected by the sensing assembly 40 so as to rectify deviation with different amplitudes.

Referring to fig. 2, fig. 2 mainly shows a sensing assembly 40 of the unwinding device and an enlarged structure thereof. In the present embodiment, the sensor mount 41 is slidably coupled to the nip roller 22. The sensor mounting seat 41 and the roller clamping seat 22 are respectively provided with a first slider 44 and a first linear guide rail 45, the first linear guide rail 45 extends along the second direction, the first linear guide rail 45 is fixedly connected with the roller clamping seat 22, the first slider 44 is fixedly connected with the sensor mounting seat 41, and the first slider 44 is connected with the first linear guide rail 45 in a sliding manner, so that when the first driving mechanism 21 drives the roller clamping seat 22 along the first direction, the first slider 44 and the first linear guide rail 45 synchronously move along the first direction, when the deviation correcting mechanism drives the first supporting plate 10 along the second direction, the first slider 44 and the first linear guide rail 45 relatively slide along the second direction, and in the sliding process, the positions of the sensor mounting seat 41 connected with the first slider 44 and the structure arranged on the sensor mounting seat 41 are unchanged in the second direction.

Referring to fig. 1 and 2, the first plate surface and the second plate surface are respectively provided with a second linear guide 101 and a third linear guide 102 extending along the first direction. The pinch roller holder 22 and the sensor mount 41 are provided with a second slider (not shown) and a third slider (not shown), respectively, for slidably connecting the pinch roller holder 22 and the sensor mount 41 to the second linear guide 101 and the third linear guide 102, respectively.

The sensing assembly 40 further comprises a sensor support 43 vertically connected with the sensor mounting seat 41, a slot 46 for the edge of the film 1 to pass through is formed in the end part of the sensor support 43 away from the sensor mounting seat 41, and the sensor 42 is arranged on at least one side of the slot 46 to detect the position information of the edge of the film 1.

Furthermore, a waist-shaped hole 47 is formed in the sensor support 43, the longitudinal direction of which is along the second direction, and the sensor support 43 is fixedly connected with the sensor mounting seat 41 through the waist-shaped hole 47 and a fastener (not shown), and can be adjusted in position relative to the sensor support 43 along the second direction.

With continued reference to fig. 1, the unwinding assembly 20 includes a second nip roller set 24 disposed on the nip roller seat 22, the second nip roller set 24 is rotatably disposed on the nip roller seat 22, and the second nip roller set 24 and the second nip roller set are spaced apart from each other. Wherein the second nip roller group 24 includes two second nip

rollers

241 and 242, and the rotation axes of the two second nip

rollers

241 and 242 are arranged in a second direction perpendicular to the first plate surface. In the current embodiment, the surfaces of the two second nip

rollers

241 and 242 are close, and the film 1 passes between the two second nip

rollers

241 and 242, and preferably, the rotation centers of the two second nip

rollers

241 and 242 are in the same horizontal line.

Further, please refer to fig. 3, wherein fig. 3 is a schematic structural diagram of another embodiment of the unwinding device of the present invention. In yet another embodiment, at least one first passing roller 201 is further disposed between the first nip roller set 23 and the second nip roller set 24, the first passing roller 201 is disposed on the nip roller seat 22, and the film 1 between the first nip roller set 23 and the second nip roller set 24 passes through a plurality of first passing rollers 201 to increase the wrap angle of the film 1 between the first nip roller set 23 and the second nip roller set 24, so as to avoid the slip phenomenon of the film 1. Further, the first passing roller 201 is vertically disposed on the nip roller holder 22.

Unreeling assembly 20 includes: an unwinding roller 26 and a tension adjusting mechanism 25.

Wherein, unreeling roller 26 is arranged on the first face for unreeling film 1. Wherein the unwinding roller 26 can actively or passively unwind the film 1 at a set speed.

The tension adjusting mechanism 25 is located between the unreeling roller 26 and the roller holder 22, and includes a plurality of second rollers 251 and at least one tension swing roller 252, the plurality of second rollers 251 are disposed on the first plate surface at intervals, the film 1 released by the unreeling roller 26 sequentially passes through the plurality of second rollers 251, and the tension swing roller 252 is disposed on the first plate surface for adjusting the tension of the film 1.

Further, the unwinding assembly 20 further includes a buffer assembly 27. The buffer assembly 27 is located between the pinch roller seat 22 and the tension adjusting mechanism 25, and comprises a vertical plate 274, and a second driving mechanism 271, a moving block 272, a buffer roller 273, a third roller 275 and a third pinch roller set 276 which are arranged on the vertical plate 274, the film 1 sequentially passes through the third roller 275, the buffer roller 273 and the third pinch roller set 276, the buffer roller 273 is arranged on the moving block 272, the second driving mechanism 271 enables the buffer roller 273 fixedly connected with the moving block 272 to be subjected to position change relative to the third roller 275 and the third pinch roller set 276 by driving the moving block 272, and the length of the buffer film 1 between the third roller 275 and the third pinch roller set 276 is changed, so that the film 1 between the buffer assembly 27 and the first pinch roller set 23 is kept at a preset tension degree. Wherein the second driving mechanism 271 comprises a linear motor arranged vertically.

When the second driving mechanism 271 drives the moving block 272 to be far away from the third nip roller set 276, the second driving mechanism 271 is used for buffering the film 1, when the second driving mechanism 271 drives the moving block 272 to be close to the third nip roller set 276, the buffered film 1 is released, and the second driving mechanism 271 drives the moving block 272 to be close to or far away from the third nip roller set 276 in a reciprocating manner, so that the film 1 can be buffered or released according to the lamination rhythm of the lamination table on the premise of ensuring the tension degree of the film 1.

Further, in another embodiment, the driving speed of the second driving mechanism 271 for the moving block 272 and the buffer roller 273 arranged on the moving block 272 is matched with the driving speed of the first driving mechanism 21 for the nip roller holder 22, so that the film 1 can be stably supplied to the lamination table on the premise of ensuring that the film 1 between the buffer assembly 27 and the first nip roller set 23 maintains the preset tension.

Please refer to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of a lamination stacking machine according to the present invention. In the current embodiment, the lamination stacking machine 1000 includes a lamination assembly 200 and the unwinding device 100, the lamination assembly 200 includes a lamination table 210 and a lamination table driving assembly 220 for driving the lamination table 210, and the lamination table driving assembly 220 is for driving the lamination table 210 to move in a third direction perpendicular to the first direction and the second direction. Specifically, the stacking table driving assembly 220 is configured to drive the uppermost layer of the stacking table 210 to be always kept at a predetermined height, so as to ensure that the stacking table 210 can accurately receive the pole piece or the film 1 when other structures for conveying the pole piece or the film 1 onto the stacking table 210 are lowered to the same height, that is, the height of the uppermost layer when the stacking table 210 receives the pole piece or the film 1 is the same.

Wherein the first direction is a direction parallel to the first support plate 10, and the second direction is a direction perpendicular to the first support plate 10.

Further, when the unwinding device 100 is disposed above the lamination assembly 200 in the vertical direction, the third direction is the vertical direction.

The unwinding device 100 is used for unwinding the film 1 to the lamination station 210 for lamination, and the unwinding device 100 is a device as described in any one of the embodiments corresponding to fig. 1 to 3, which can be specifically referred to the description of the corresponding parts above, and will not be described in detail herein.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides an unwinding device, its characterized in that, unwinding device includes:

a first support plate;

the unwinding assembly is mounted on a first plate surface of the first supporting plate and comprises a first driving mechanism, a clamping roller seat and a first clamping roller group, the first driving mechanism drives the clamping roller seat along a first direction parallel to the first plate surface, the first clamping roller group is rotatably arranged on the clamping roller seat and comprises two first clamping rollers for clamping a film, and rotating shafts of the two first clamping rollers are arranged along a second direction perpendicular to the first plate surface;

the sensing assembly is installed on the second plate surface of the second supporting plate and comprises a sensor installation seat and a sensor arranged on the sensor installation seat, the sensor installation seat extends towards the roller clamping seat along the second direction, so that the sensor can detect the position of the film clamped by the two first clamping rollers, the sensor installation seat is arranged to follow the first direction, the roller clamping seat moves, and the roller clamping seat is opposite to the sensor installation seat in the second direction in a sliding mode.

2. The unwinding device as claimed in claim 1, further comprising a deviation correcting mechanism, wherein the deviation correcting mechanism is configured to drive the first support plate to move relative to the second support plate along the second direction according to an offset of the actual position of the film detected by the sensor relative to a preset position.

3. The unwinding device of claim 2, wherein the sensor mount extends in the second direction and is slidably coupled to the second support plate, the sensor mounting seat slides relative to the second supporting plate in the first direction, a first sliding block and a first linear guide rail are respectively arranged on the sensor mounting seat and the pinch roller seat, the first linear guide rail extends along the second direction, the first sliding block is connected with the first linear guide rail in a sliding way, so that the first slide block and the first linear guide rail move synchronously along the first direction when the first driving mechanism drives the pinch roller seat along the first direction, when the deviation rectifying mechanism drives the first supporting plate along the second direction, the first sliding block and the first linear guide rail slide relatively along the second direction.

4. The unwinding device of claim 3, wherein the first board surface and the second board surface are respectively provided with a second linear guide rail and a third linear guide rail extending along the first direction, the nip roller seat and the sensor mounting seat are respectively provided with a second slider and a third slider, and the second slider and the third slider are used for slidably connecting the nip roller seat and the sensor mounting seat to the second linear guide rail and the third linear guide rail respectively.

5. The unwinding device as claimed in claim 1, wherein the sensing assembly further includes a sensor support vertically connected to the sensor mounting base, an end of the sensor support, which is away from the sensor mounting base, is provided with a slot for the edge of the film to pass through, and the sensor is disposed on at least one side of the slot to detect the position information of the edge of the film.

6. The unwinding device as claimed in claim 5, wherein the sensor support is provided with a waist-shaped hole having a length direction along the second direction, and the sensor support is fixedly connected to the sensor mounting base through the waist-shaped hole and a fastening member, and can be adjusted in position relative to the sensor support along the second direction.

7. The unwinding device of claim 1, wherein the unwinding assembly further comprises a second pinch roller set disposed on the pinch roller base, the second pinch roller set being rotatably disposed on the pinch roller base and spaced apart from the first pinch roller set;

at least one first roller is further arranged between the first roller clamping group and the second roller clamping group, the first roller is arranged on the roller clamping seat, and the film between the first roller clamping group and the second roller clamping group is wound through the first rollers.

8. The unwinding device of claim 1, wherein the unwinding assembly comprises:

9. The unwinding device of claim 8, wherein the unwinding assembly comprises a buffer assembly located between the nip roller base and the tension adjusting mechanism, and comprises a vertical plate, a second driving mechanism, a moving block, a buffer roller, a third roller and a third roller clamping group which are arranged on the vertical plate, the film sequentially passes through the third roller, the buffer roller and the third pinch roller group, the buffer roller is arranged on the moving block, the second driving mechanism enables the position of the buffer roller to be changed relative to the third roller passing and clamping roller group by driving the moving block, and then the film between the buffer assembly and the first clamping roller group is kept at a preset tension degree by changing the length of the film buffered between the third roller and the third clamping roller group.

10. A laminator, comprising a lamination assembly and an unwinding device, the lamination assembly comprising a lamination table and a lamination table drive assembly for driving the lamination table, the lamination table drive assembly for driving the lamination table to move in a third direction perpendicular to the first and second directions;

the unwinding device is used for unwinding a film to the laminating table for laminating, and the unwinding device is the device according to any one of claims 1 to 9.