CN220702766U - Deviation correcting device and coating machine - Google Patents

Abstract

The utility model discloses a deviation correcting device and a coating machine. The deviation correcting device comprises a fixing piece, a floating piece, deviation correcting rollers, a guiding mechanism and a power mechanism, wherein the floating piece and the fixing piece are arranged side by side and are arranged at intervals along the transmission direction of the transmission belt piece, the floating piece is rotationally connected to the fixing piece, the deviation correcting rollers are rotationally arranged on the floating piece, the deviation correcting rollers are used for guiding the transmission belt piece, the guiding mechanism comprises a guiding piece and a guiding arc groove, one of the guiding piece and the guiding arc groove is arranged on the fixing piece, the other one of the guiding piece and the guiding arc groove is arranged on the floating piece, and the guiding piece is arranged in the guiding arc groove. Because the power mechanism can drive the floating piece to rotate relative to the fixed piece, the deviation correcting roller positioned on the floating piece can synchronously deflect, so that deviation correction of the conveying belt piece can be realized. And the deviation correcting device can improve the rotation precision of the floating piece relative to the fixed piece by arranging the guide mechanism, thereby improving the deviation correcting precision of the deviation correcting roller on the transmission belt piece.

Description

Deviation correcting device and coating machine

Technical Field

The utility model relates to the technical field of carbon-coated foil winding equipment, in particular to a deviation correcting device and a coating machine.

Background

The surface treatment of the battery conductive substrate by utilizing the functional coating is a breakthrough technical innovation, and the carbon-coated aluminum foil or the carbon-coated copper foil is characterized in that the dispersed nano conductive graphite and carbon coated particles are uniformly and finely coated on the aluminum foil or the copper foil, and the carbon-coated aluminum foil and the carbon-coated copper foil are collectively called as carbon-coated foil. The carbon-coated foil can provide excellent static conductive performance and collect micro-current of active substances, so that contact resistance between the anode material and the cathode material and between the anode material and the current collector can be greatly reduced, adhesion capability between the anode material and the current collector can be improved, usage amount of a binder is reduced, and overall performance of the battery is remarkably improved.

In the production process of the carbon-coated foil, the carbon-coated foil is easy to shift when entering a coating machine, so that the tension in the carbon-coated foil is influenced, the production quality of the carbon-coated foil is further influenced, even if the carbon-coated foil shifts to a larger position, the whole transmission system is stopped, and the production efficiency of the carbon-coated foil is seriously influenced.

Therefore, how to provide a deviation correcting device for correcting the deviation of the carbon-coated foil is a technical problem to be solved.

Disclosure of Invention

The utility model aims to provide a deviation correcting device which has a deviation correcting function, can improve the transmission precision of a transmission belt piece and improves the transmission efficiency of the transmission belt piece.

To achieve the purpose, the utility model adopts the following technical scheme:

a deviation-correcting device for correcting a deviation of a conveyor belt, the deviation-correcting device comprising: a fixing member; the floating piece and the fixing piece are arranged side by side and are arranged at intervals along the transmission direction of the transmission belt piece, and the floating piece is rotationally connected to the fixing piece; the deviation correcting roller is rotatably arranged on the floating piece and is used for guiding the conveying belt piece; the guide mechanism comprises a guide piece and a guide arc groove, one of the guide piece and the guide arc groove is arranged on the fixing piece, the other guide piece is arranged on the floating piece, and the guide piece is arranged in the guide arc groove; and the output end of the power mechanism is connected with the floating piece and is used for driving the floating piece to rotate relative to the fixed piece, so that the guide piece moves in the guide arc groove.

Preferably, the deviation correcting device further comprises a deviation correcting sensor, and the deviation correcting sensor is used for detecting whether the transmission belt piece deviates.

Preferably, the deviation correcting device further comprises a connecting frame, the deviation correcting sensor is fixedly connected to the floating piece through the connecting frame, and in the transmission direction of the transmission belt piece, the deviation correcting sensor is located at the front side of the deviation correcting roller.

Preferably, the power mechanism comprises a direct-pushing hydraulic cylinder, the cylinder end of the direct-pushing hydraulic cylinder is rotatably connected to the fixing piece, and the cylinder end of the direct-pushing hydraulic cylinder is rotatably connected to the floating piece.

Preferably, the power mechanism further comprises a first mounting seat and a first rotating shaft piece, the first mounting seat is connected to the fixing piece, the first mounting seat comprises two first mounting plates arranged at intervals, each first mounting plate is provided with a first shaft hole, the cylinder body end of the direct-pushing hydraulic cylinder is convexly provided with a second mounting plate, the second mounting plate is provided with a second shaft hole, the second mounting plate is arranged between the two first mounting plates, and the first rotating shaft piece is arranged in the first shaft hole and the second shaft hole in a penetrating mode.

Preferably, the power mechanism further comprises a second mounting seat and a second rotating shaft piece, the second mounting seat is connected to the floating piece, the second mounting seat comprises two third mounting plates arranged at intervals, each third mounting plate is provided with a third shaft hole, the cylinder rod end of the direct-pushing hydraulic cylinder is convexly provided with a fourth mounting plate, the fourth mounting plate is provided with a fourth shaft hole, the fourth mounting plate is arranged between the two third mounting plates, and the second rotating shaft piece is arranged in the third shaft hole in a penetrating mode and the fourth shaft hole.

Preferably, the fixing piece comprises a fixing plate and a first bump, the first bump is convexly arranged at the top end of the fixing plate, and a first through hole is formed in the first bump in a penetrating manner; the floating piece comprises a floating plate and a second bump, a hollow structure is arranged on the floating plate, the second bump is arranged in the hollow structure, and a second through hole is formed in the bump in a penetrating mode; the deviation correcting device further comprises a rotating piece, and the rotating piece is arranged in the first through hole and the second through hole in a penetrating mode.

Preferably, the floating piece further comprises two roller mounting plates arranged at intervals, the roller mounting plates are connected with the floating plates in an included angle mode, roller mounting holes are formed in each roller mounting plate, and two ends of the deviation correcting roller are inserted into the two roller mounting holes in a one-to-one correspondence mode.

Preferably, the number of the guide mechanisms is plural, and the plurality of guide pieces are inserted into the plurality of guide arc grooves in one-to-one correspondence.

The coating machine comprises a roller conveying device and the deviation correcting device, wherein the roller conveying device comprises a plurality of conveying rollers which are arranged at intervals, and the deviation correcting device is arranged between two adjacent conveying rollers.

The utility model has the beneficial effects that:

the utility model provides a deviation correcting device which comprises a fixing piece, a floating piece, a deviation correcting roller, a guide mechanism and a power mechanism, wherein the floating piece and the fixing piece are arranged side by side and are arranged at intervals along the transmission direction of a transmission belt piece, the floating piece is rotationally connected to the fixing piece, the deviation correcting roller is rotationally arranged on the floating piece, the deviation correcting roller is used for guiding the transmission belt piece, the guide mechanism comprises a guide piece and a guide arc groove, one of the guide piece and the guide arc groove is arranged on the fixing piece, the other one of the guide piece and the guide arc groove is arranged on the floating piece, and the guide piece is arranged in the guide arc groove. Because the power mechanism can drive the floating piece to rotate relative to the fixed piece, the deviation correcting roller positioned on the floating piece can synchronously deflect, so that deviation correction of the conveying belt piece can be realized. And the deviation correcting device can improve the rotation precision of the floating piece relative to the fixed piece by arranging the guide mechanism, thereby improving the deviation correcting precision of the deviation correcting roller on the transmission belt piece.

Drawings

FIG. 1 is a schematic view of a part of a coater provided by the present utility model;

FIG. 2 is a schematic structural diagram of the deviation correcting device according to the present utility model under a certain view angle;

FIG. 3 is a schematic structural diagram of the deviation correcting device according to the present utility model under another view angle;

FIG. 4 is a schematic structural diagram of the deviation correcting device according to the present utility model at a further view angle;

fig. 5 is a schematic view of a fixing member of the deviation correcting device provided by the utility model.

In the figure:

10. a deviation correcting device; 20. a conveyor belt member; 30. a conveying roller;

100. a fixing member; 101. a fixing plate; 102. a first bump; 103. support legs; 104. a guide arc groove;

200. a floating member; 201. a floating plate; 202. a second bump; 203. a roller mounting plate;

300. a correction roller; 400. a power mechanism; 500. a guide member;

600. a correction sensor; 610. a connecting frame;

700. a first mount; 800. a second mounting base; 900. a second shaft member; 110. a rotating member; 120. a first shaft member.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the present utility model provides a deviation rectifying device 10, and the deviation rectifying device 10 can rectify the carbon-coated foil when the carbon-coated foil is inclined. Of course, the deviation rectifying device 10 can be used for rectifying deviation of other foils or strips besides carbon-coated foils. For convenience of description, the structure to be corrected will be hereinafter referred to as a conveying belt member 20.

As shown in fig. 2 to 5, the deviation rectifying device 10 includes a fixed member 100, a floating member 200, a deviation rectifying roller 300, a guide mechanism, and a power mechanism 400. The fixing member 100 is an installation component of the deviation correcting device 10, the floating member 200 is installed on the fixing member 100, the fixing member 100 is fixedly arranged relative to the ground, the bottom end of the fixing member 100 is directly supported on the ground or other equipment which is fixed relative to the ground, and the fixing member 100 is kept fixed relative to the ground when the deviation correcting device 10 corrects the deviation of the transmission belt member 20. The floating member 200 and the fixing member 100 are arranged side by side and are spaced along the conveying direction of the conveying belt member 20, the floating member 200 is rotatably connected to the fixing member 100, and a certain gap is formed between the bottom end of the floating member 200 and the bottom end of the fixing member 100, so that the floating member 200 is in a suspended state, and the floating member 200 can rotate relative to the fixing member 100. The deviation correcting roller 300 is used for guiding the conveying belt 20, the deviation correcting roller 300 is rotatably arranged on the floating member 200, and when the floating member 200 deflects relative to the fixing member 100, the deviation correcting roller 300 can synchronously deflect along with the floating member 200, so that the deviation correcting roller 300 deflects the guiding direction of the conveying belt 20, and the deflected conveying belt 20 is corrected. The power mechanism 400 is used for driving the floating member 200 to rotate relative to the floating member 200, and an output end of the power mechanism 400 is connected with the floating member 200.

The guide mechanism is used for guiding the rotation of the floating member 200 to improve the rotation precision and the rotation stability of the floating member 200, and specifically, the guide mechanism comprises a guide member 500 and a guide arc groove 104, one of the guide member 500 and the guide arc groove 104 is arranged on the fixing member 100, the other is arranged on the floating member 200, the guide member 500 is arranged in the guide arc groove 104, and the guide member 500 can move in the guide arc groove 104 when the floating member 200 rotates relative to the fixing member 100. In some embodiments, the guide 500 is disposed on the fixed member 100 and the guide arc slot 104 is disposed on the floating member 200; in some side-by-side embodiments, the guide arc slot 104 is provided on the mount 100 and the guide 500 is provided on the float 200. The guide mechanism is spaced from the rotation axis of the float member 200 when it rotates, so that the movement track of the guide member 500 is an arc when the float member 200 rotates.

The conveying belt member 20 takes a carbon-coated foil as an example, and the carbon-coated foil is easy to deflect to one side when entering the coating machine, so that the tension in the carbon-coated foil is influenced, the production quality of the carbon-coated foil is reduced, and even when the deflection position is large, the conveying system of the coating machine is stopped, so that the production efficiency of the carbon-coated foil is seriously influenced. By providing the deviation correcting device 10, the deviation of the carbon-coated foil which is deviated can be corrected, so that the influence is eliminated. Specifically, if the deviation of the carbon-coated foil is found, the power mechanism 400 of the deviation correcting device 10 works, the floating member 200 rotates relative to the fixed member 100, and the deviation correcting roller 300 connected to the floating member 200 synchronously deflects, so that the deviation correcting roller 300 and the carbon-coated foil positioned on the deviation correcting roller 300 deflect reversely, and the carbon-coated foil is conveyed according to a correct angle.

The fixing member 100 may be a plate member or a frame structure. The fixing member 100 may be an integrally formed member or may be a spliced member composed of a plurality of members.

In some embodiments, as shown in fig. 2, the fixing member 100 includes a fixing plate 101 and a first bump 102, a supporting leg 103 is formed at the bottom end of the fixing plate 101, the bottom end of the supporting leg 103 supports the ground, the number of the supporting legs 103 can be one, two or more, the first bump 102 is convexly arranged at the top end of the fixing plate 101, and a first through hole is arranged on the first bump 102 in a penetrating manner. In some embodiments, the fixing plate 101 is provided with a plurality of weight-reducing holes, so that the weight of the fixing plate 101 is effectively reduced for the purpose of reducing the cost. The shape of the lightening holes can be set to be regular holes such as rectangular holes, circular holes and the like or irregular holes according to the requirements. In some specific embodiments, the first bump 102 is a rectangular block, and the first bump 102 is protruding in the middle of the top end of the fixing plate 101.

The floating member 200 may be a plate member or a frame structure. The floating member 200 may be an integral member or a spliced member composed of a plurality of members.

In some embodiments, as shown in fig. 2, the floating member 200 includes a floating plate 201 and a second bump 202, the floating plate 201 is provided with a hollow structure, the second bump 202 is disposed in the hollow structure, and a second through hole is disposed through the bump. The hollow structure can be set as regular through holes such as rectangular through holes, circular through holes and the like according to requirements, and also can be irregular through holes. The through hole deviation correcting device 10 further comprises a rotating piece 110, and the rotating piece 110 is arranged in the first through hole and the second through hole in a penetrating mode. In some embodiments, the float 200 is generally rectangular in shape. Through protruding the setting of first lug 102 on the top of fixed plate 101, and set up the inside at floating plate 201 with second lug 202 for the height of floating piece 200 is greater than the height of mounting 100, thereby makes the structure of whole deviation correcting device 10 compacter, and floating piece 200 is difficult for taking place to interfere with mounting 100 in the rotation process.

With continued reference to fig. 2, the floating member 200 further includes two roller mounting plates 203 disposed at intervals, each of the two roller mounting plates 203 is connected with the floating plate 201 by an included angle, each of the roller mounting plates 203 is provided with a roller mounting hole, each of the roller mounting holes is a circular hole, the deviation rectifying roller 300 is cylindrical, and two ends of the deviation rectifying roller 300 are inserted into the two roller mounting holes in a one-to-one correspondence manner. In some embodiments, the roller mounting plate 203 is vertically connected to the floating plate 201, and when the deviation rectifying device 10 is in an operating state, the floating plate 201 is disposed to extend in a vertical direction, and the roller mounting plate 203 is disposed to extend in a horizontal direction.

In order to improve the guiding accuracy of the floating member 200, the number of the guiding mechanisms is plural, and the plurality of guiding members 500 are inserted into the plurality of guiding arc grooves 104 in one-to-one correspondence. In a specific embodiment, the deviation correcting device 10 is provided with two sets of guiding mechanisms, two guiding arc grooves 104 are arranged on the end face of the fixed plate 101 facing the floating piece 200 at intervals, the guiding piece 500 is in a shaft-shaped structure, one end of the guiding piece 500 is arranged on the floating plate 201 of the floating piece 200 in a penetrating way, and the other end of the guiding piece 500 is arranged in the corresponding guiding arc groove 104.

The power mechanism 400 includes a direct-push hydraulic cylinder, the cylinder end of which is rotatably connected to the fixing member 100, and the cylinder end of which is rotatably connected to the floating member 200. The structure of the direct-pushing hydraulic cylinder is in the prior art, and is driven by an electric power signal, and the driving principle is in the prior art. Of course, instead of a direct-push hydraulic cylinder, the power mechanism 400 may use other mechanisms capable of outputting rotational motion, thereby enabling the floating member 200 to rotate relative to the fixed member 100, for example, the power mechanism 400 employs a combination of a driving motor and a gear mechanism.

In order to realize the rotation connection of the cylinder body end of the direct-push hydraulic cylinder, and with continued reference to fig. 1, the power mechanism 400 further comprises a first mounting seat 700 and a first rotating shaft member 120, the first mounting seat 700 is connected to the fixing member 100, the first mounting seat 700 comprises two first mounting plates arranged at intervals, each first mounting plate is provided with a first shaft hole, the cylinder body end of the direct-push hydraulic cylinder is convexly provided with a second mounting plate, the second mounting plate is provided with a second shaft hole, the second mounting plate is arranged between the two first mounting plates, and the first rotating shaft member 120 is arranged in the first shaft hole and the second shaft hole in a penetrating manner.

In order to realize the rotation connection of the cylinder rod end of the direct-push hydraulic cylinder, and with continued reference to fig. 1, the power mechanism 400 further comprises a second mounting seat 800 and a second rotating shaft member 900, the second mounting seat 800 is connected to the floating member 200, the second mounting seat 800 comprises two third mounting plates arranged at intervals, each third mounting plate is provided with a third shaft hole, the cylinder rod end of the direct-push hydraulic cylinder is convexly provided with a fourth mounting plate, the fourth mounting plate is provided with a fourth shaft hole, the fourth mounting plate is arranged between the two third mounting plates, and the second rotating shaft member 900 is arranged in the third shaft hole and the fourth shaft hole in a penetrating manner.

To determine whether the conveyor 20 is deflected, and with continued reference to fig. 1, the deviation-correcting device 10 further includes a deviation-correcting sensor 600, where the deviation-correcting sensor 600 is configured to detect whether the conveyor 20 is deflected. The specific structure of the deviation correcting sensor 600 is the prior art, and will not be described herein.

With continued reference to fig. 1, the deviation rectifying device 10 further includes a connecting frame 610, the deviation rectifying sensor 600 is fixedly connected to the floating member 200 through the connecting frame 610, and the deviation rectifying sensor 600 is located at the front side of the deviation rectifying roller 300 in the conveying direction of the conveying belt member 20.

The utility model also provides a coating machine, which comprises a roller conveying device and the deviation correcting device 10, wherein the roller conveying device comprises a plurality of conveying rollers 30 which are arranged at intervals, and the deviation correcting device 10 is arranged between two adjacent conveying rollers 30. It should be noted that the structure of the roller conveying device is the prior art, so that the description thereof is omitted here.

When the coating machine normally produces the running belt, the state of the carbon-coated foil is detected in real time by the deviation correcting sensor 600, when the carbon-coated foil deviates to one side, the deviation correcting sensor 600 can instantly detect and feed back a deviation signal to a control mechanism of the coating machine, a processor of the control mechanism calculates an angle needing to reversely incline in real time according to the data such as the deviation amount, the intensity and the like, and sends an electric signal to a direct-pushing hydraulic cylinder, and the direct-pushing hydraulic cylinder receives the electric signal to control the hydraulic rod to stretch out or retract. Because the fixing member 100 is fixed on the machine and can not move, and the floating member 200 is floating and can rotate, the floating member 200 moves in an arc shape by taking the rotating member 110 as a rotating shaft under the driving of the direct-pushing hydraulic cylinder, so that the deviation correcting roller 300 mounted on the floating member 200 moves synchronously. Due to the inclination of the deviation correcting roller 300, the carbon coated foil in the running belt of the coating machine runs to one side under the action of gravity due to the inclination of the deviation correcting roller 300. Specifically, if the carbon-coated foil is initially deflected to the right, the deviation correcting device 10 deflects the whole to the right, so that the carbon-coated foil is corrected to the left; otherwise, the carbon-coated foil is deviated leftwards, and the deviation correcting device 10 is deviated leftwards as a whole, so that the carbon-coated foil is corrected rightwards. The deviation correcting device 10 can be operated well due to the advantages of high corresponding speed of the electric signals, strong overload capacity of the direct-pushing hydraulic cylinder and the like.

It should be noted that, the control mechanism of the coating machine may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer, or may be a distributed multi-chip microcomputer, where a control program may be run in the single-chip microcomputer, so as to control the deviation correcting sensor 600, the direct-pushing hydraulic cylinder, and the like to implement the functions thereof.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A deviation correcting device for correcting a deviation of a conveyor belt (20), the deviation correcting device comprising:

a fixing member (100);

the floating pieces (200) are arranged side by side with the fixing pieces (100) and are arranged at intervals along the transmission direction of the transmission belt piece (20), and the floating pieces (200) are rotationally connected to the fixing pieces (100);

the deviation correcting roller (300) is rotatably arranged on the floating piece (200), and the deviation correcting roller (300) is used for guiding the conveying belt piece (20);

the guide mechanism comprises a guide piece (500) and a guide arc groove (104), one of the guide piece (500) and the guide arc groove (104) is arranged on the fixed piece (100), the other guide piece is arranged on the floating piece (200), and the guide piece (500) is arranged in the guide arc groove (104);

and the output end of the power mechanism (400) is connected with the floating piece (200) and is used for driving the floating piece (200) to rotate relative to the fixed piece (100) so that the guide piece (500) moves in the guide arc groove (104).

2. The deviation correcting device according to claim 1, wherein,

the deviation correcting device further comprises a deviation correcting sensor (600), and the deviation correcting sensor (600) is used for detecting whether the conveying belt piece (20) deviates.

3. The deviation correcting device according to claim 2, wherein,

the correcting device further comprises a connecting frame (610), the correcting sensor (600) is fixedly connected to the floating piece (200) through the connecting frame (610), and is positioned on the front side of the correcting roller (300) in the transmission direction of the transmission belt piece (20).

4. The deviation correcting device according to claim 1, wherein,

the power mechanism (400) comprises a direct-pushing hydraulic cylinder, the cylinder body end of the direct-pushing hydraulic cylinder is rotationally connected to the fixing piece (100), and the cylinder rod end of the direct-pushing hydraulic cylinder is rotationally connected to the floating piece (200).

5. The deviation correcting device of claim 4, wherein,

the power mechanism (400) further comprises a first mounting seat (700) and a first rotating shaft piece (120), the first mounting seat (700) is connected to the fixing piece (100), the first mounting seat (700) comprises two first mounting plates arranged at intervals, each first mounting plate is provided with a first shaft hole, the cylinder body end of the direct-pushing hydraulic cylinder is convexly provided with a second mounting plate, the second mounting plate is provided with a second shaft hole, the second mounting plate is arranged between the two first mounting plates, and the first rotating shaft piece (120) is arranged in the first shaft hole and the second shaft hole in a penetrating mode.

6. The deviation correcting device of claim 4, wherein,

the power mechanism (400) further comprises a second mounting seat (800) and a second rotating shaft piece (900), the second mounting seat (800) is connected to the floating piece (200), the second mounting seat (800) comprises two third mounting plates arranged at intervals, each third mounting plate is provided with a third shaft hole, the end of a cylinder rod of the direct-pushing hydraulic cylinder is convexly provided with a fourth mounting plate, the fourth mounting plate is provided with a fourth shaft hole, the fourth mounting plate is arranged between the two third mounting plates, and the second rotating shaft piece (900) is arranged in the third shaft hole in a penetrating mode and the fourth shaft hole in a penetrating mode.

7. The deviation correcting device according to claim 1, wherein,

the fixing piece (100) comprises a fixing plate (101) and a first lug (102), wherein the first lug (102) is convexly arranged at the top end of the fixing plate (101), and a first through hole is formed in the first lug (102) in a penetrating mode;

the floating piece (200) comprises a floating plate (201) and a second lug (202), wherein a hollowed-out structure is arranged on the floating plate (201), the second lug (202) is arranged in the hollowed-out structure, and a second through hole is formed in the lug in a penetrating mode;

the deviation correcting device further comprises a rotating piece (110), and the rotating piece (110) is arranged in the first through hole and the second through hole in a penetrating mode.

8. The apparatus according to claim 7, wherein,

the floating piece (200) further comprises two roller mounting plates (203) which are arranged at intervals, the roller mounting plates (203) are connected with the floating plates (201) in an included angle mode, roller mounting holes are formed in each roller mounting plate (203), and two ends of the deviation correcting roller (300) are inserted into the two roller mounting holes in a one-to-one correspondence mode.

9. The apparatus according to any one of claims 1 to 8, wherein,

the number of the guide mechanisms is a plurality, and a plurality of the guide pieces (500) are inserted into a plurality of the guide arc grooves (104) in a one-to-one correspondence manner.

10. A coater comprising a roller conveyor and a correction device according to any one of claims 1-9, said roller conveyor comprising a plurality of spaced conveyor rollers (30), said correction device being arranged between adjacent two of said conveyor rollers (30).