阅读说明：本技术 一种电池石墨极板生产用防护型辊压设备 (Protection type roll-in equipment is used in production of battery graphite polar plate ) 是由 张大陆 刘硕 刘敖移 于 2021-06-22 设计创作，主要内容包括：本发明涉及一种电池石墨极板生产用防护型辊压设备,包括安装架和可转动式的设于安装架内呈上下设置的上辊和下辊,所述上辊与下辊之间设有压板区域,所述安装架上设有位于上辊远离压板区域一侧的第一固定架,所述安装架上设有位于下辊远离压板区域一侧的第二固定架,所述第一固定架和第二固定架内侧均设有分别位于上辊和下辊外侧的表面清理组件；本发明对辊压过程中的辊压过程进行了改进,通过表面清理组件、传动组件和接渣盒的配合使用,在上辊和下辊进行辊压过程中,可对辊表面的杂质进行清理,并对杂质进行收集,避免了辊表面留有杂质对板材表面造成划伤,从而使板材在后续加工工艺中降低了气密性不好的情况发生的几率,提高了板材的成品率。(The invention relates to protective rolling equipment for producing a graphite polar plate of a battery, which comprises a mounting frame, and an upper roller and a lower roller which are rotatably arranged in the mounting frame in an up-and-down manner, wherein a pressing plate area is arranged between the upper roller and the lower roller; the invention improves the rolling process in the rolling process, and can clean impurities on the surface of the roller and collect the impurities in the rolling process of the upper roller and the lower roller by matching the surface cleaning assembly, the transmission assembly and the slag receiving box, thereby avoiding the surface of the plate from being scratched by the impurities left on the surface of the roller, reducing the probability of the plate with poor air tightness in the subsequent processing technology and improving the yield of the plate.)

1. The utility model provides a production of battery graphite polar plate is with protection type roll-in equipment, including mounting bracket (1) and rotatable formula locate last roller (2) and lower roll (3) that are the upper and lower setting in mounting bracket (1), its characterized in that, it is equipped with the clamp plate region to go up between roller (2) and lower roll (3), be equipped with on mounting bracket (1) and be located last roller (2) and keep away from the first mount (4) of clamp plate region one side, be equipped with on mounting bracket (1) and be located lower roll (3) and keep away from second mount (5) of clamp plate region one side, first mount (4) and second mount (5) inboard all are equipped with the surface cleaning subassembly (6) that are located the last roller (2) and lower roll (3) outside respectively, the rotation end of going up roller (2) and lower roll (3) all is equipped with drive assembly (7), drive assembly (7) and adjacent surface cleaning subassembly (6) link to each other and are used for driving surface cleaning subassembly (6) along circumferential direction, and the first fixing frame (4) and the second fixing frame (5) are respectively provided with a slag receiving box (8) positioned below the surface cleaning component (6).

2. The protective rolling device for producing graphite electrode plates of batteries according to claim 1, wherein: still including locating on mounting bracket (1) pressure adjustment subassembly (9) that link to each other with last roller (2), pressure adjustment subassembly (9) are used for adjusting the clamp plate region size between last roller (2) and lower roll (3), first mount (4) are followed last roller (2) moving direction movable locate on mounting bracket (1), just the one end of first mount (4) is passed through the bearing and is located last roller (2) and rotate and serve.

3. The protective rolling device for producing graphite electrode plates of batteries according to claim 2, wherein: the utility model discloses a unreeling device, including first mount (4) and second mount (5), unreel subassembly (10) and be equipped with of equal rotary type on first mount (4) and second mount (5), it links to each other with adjacent surface cleaning assembly (6) to unreel subassembly (10), be equipped with respectively on mounting bracket (1) and be mobile station (11) and fixed station (12) that set up about being located roller (2) department, on locating mounting bracket (1) of mobile station (11), one unreel rotatable locating mobile station (11) of subassembly (10) and link to each other with mobile station (11) unreel and be equipped with first transmission piece (13) between subassembly (10) and fixed station (12), first transmission piece (13) are used for driving and unreel subassembly (10) along circumferential direction, be equipped with first torsional spring (14) between first transmission piece (13) and the mobile station (11).

4. The protective rolling device for producing graphite electrode plates of batteries according to claim 3, wherein: the unwinding device is characterized by further comprising a second transmission piece (15) arranged between the transmission end of the first transmission piece (13) and the other unwinding assembly (10), wherein the second transmission piece (15) is used for driving the other unwinding assembly (10) to rotate along the circumferential direction, and a second torsion spring (16) is arranged between the second transmission piece (15) and the mounting frame (1).

5. The protected rolling apparatus for producing graphite electrode plates of batteries according to claim 4, wherein: unreel subassembly (10) including locating bearing frame (101) on first mount (4) and second mount (5), the inboard of bearing frame (101) is equipped with puts rope drum (102), it is equipped with first stay cord (103) to put between rope drum (102) and adjacent surface cleaning assembly (6).

6. The protected rolling apparatus for producing graphite electrode plates of batteries according to claim 5, wherein: the first transmission piece (13) comprises a first rope winding drum (131) arranged at the rotating end of the unwinding assembly (10), and a second rope (132) is arranged between the first rope winding drum (131) and the fixed table (12).

7. The protected rolling apparatus for producing graphite electrode plates of batteries according to claim 6, wherein: the second transmission piece (15) comprises a winding rod (151) and a second winding drum (152) which are respectively arranged on the first winding drum (131) and the other unwinding assembly (10), and a third pull rope (153) is arranged between the second winding drum (152) and the winding rod (151).

8. The protective rolling device for producing graphite electrode plates of batteries according to any one of claims 1 to 7, wherein: surface cleaning subassembly (6) are located and are equipped with expanding spring between first mount (4) internal connection frame (61) and first mount (4) including locating link (61) that first mount (4) and second mount (5) are inboard, the rotatable formula in inboard of link (61) is equipped with bull stick (62), bull stick (62) outside is equipped with clearance cylinder brush (63).

9. The protected roll apparatus for producing graphite electrode plates of batteries according to claim 8, wherein: drive assembly (7) are including locating rotation wheel (71) in last roller (2) and lower roll (3) outside, the outside of rotating wheel (71) is equipped with a plurality of inserted bars (72), be equipped with swiveling wheel (73) on swiveling lever (62), be equipped with a plurality of montants (74) on swiveling wheel (73), rotatable formula is equipped with transfer line (75) on link (61), the both ends of transfer line (75) are equipped with big drive wheel (76) and little drive wheel (77) respectively, the outside of big drive wheel (76) is equipped with a plurality of slots with inserted bar (72) looks adaptation, be equipped with a plurality of gomphosis grooves with montant (74) looks adaptation on little drive wheel (77).

10. The protected roll apparatus for producing graphite electrode plates for batteries according to claim 9, wherein: still including locating a plurality of bullet hitting spring (17) of link (61) inboard, the opposite side of bullet hitting spring (17) is equipped with bullet hitting ball (18), be equipped with a plurality of bullet hitting pieces (19) on bull stick (62), be equipped with one bullet hitting piece (19) between two adjacent bullet hitting ball (18).

Technical Field

The invention relates to the technical field of battery graphite pole plate production, in particular to protective type rolling equipment for producing a battery graphite pole plate.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, also called an electrochemical generator, and is a fourth power generation technology following hydroelectric power generation, thermal power generation, and atomic power generation, and the fuel cell mainly comprises the following components: electrodes, electrolyte membranes, current collectors, etc., wherein the bipolar plates are important components in fuel cells, and the flow field on the surface of the bipolar plates has a great influence on the performance of the fuel cells.

At present, the existing fuel cell bipolar plate usually needs to be formed into a bipolar plate finished product through processes such as forming, infiltration, vulcanization and the like, wherein a plate needs to be rolled in the forming process, so that the effects of controlling the thickness of the plate and rolling out a flow field on the surface of the plate are achieved, and when the existing equipment is used for rolling and processing the plate, if particle impurities adhere to the surface of a rolling mechanism, the impurities can easily scratch the surface of the plate, the problems of poor air tightness and the like of the plate are easily caused in the subsequent processing process, and meanwhile, the subsequent use of the plate is not facilitated.

In order to solve the problems, the invention provides protective rolling equipment for producing a graphite polar plate of a battery.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to overcome the defects of the prior art, adapt to the practical requirements and provide protective rolling equipment for producing a graphite polar plate of a battery so as to solve the technical problems.

(2) Technical scheme

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

the utility model provides a production of battery graphite polar plate is with protection type roll-in equipment, is last roller and lower roll that sets up from top to bottom including mounting bracket and rotatable formula locating in the mounting bracket, it is equipped with the clamp plate region to go up between roller and the lower roll, be equipped with the first mount that is located the roller and keeps away from clamp plate region one side on the mounting bracket, be equipped with the second mount that is located the lower roll and keeps away from clamp plate region one side on the mounting bracket, first mount and second mount inboard all are equipped with the surperficial clearance subassembly that is located the roller and the lower roll outside respectively, the rotation end of going up roller and lower roll all is equipped with drive assembly, drive assembly is with adjacent the surperficial clearance subassembly links to each other and is used for driving surperficial clearance subassembly along circumferential direction, all be equipped with the sediment box that connects that is located surperficial clearance subassembly below on first mount and the second mount.

Further, still including locating the pressure adjustment subassembly that links to each other with last roller on the mounting bracket, pressure adjustment subassembly is used for adjusting the regional size of clamp plate between last roller and the lower roll, first mount is along last roller moving direction movable locate the mounting bracket on, just the one end of first mount is located last roller through the bearing and is rotated and serve.

Further, what all can the rotary type be equipped with on first mount and the second mount unreels the subassembly, it links to each other with adjacent surface cleaning assembly to unreel the subassembly, be equipped with respectively on the mounting bracket and be the mobile station and the fixed station that set up about being located roller department, mobile station movable locates on the mounting bracket, one unreel rotatable formula of subassembly and locate on the mobile station, link to each other with the mobile station unreel and be equipped with first transmission piece between subassembly and the fixed station, first transmission piece is used for driving and unreels the subassembly and follow circumferential direction, be equipped with first torsional spring between first transmission piece and the mobile station.

Furthermore, the unwinding device further comprises a second transmission part arranged between the transmission end of the first transmission part and the other unwinding component, the second transmission part is used for driving the other unwinding component to rotate along the circumferential direction, and a second torsion spring is arranged between the second transmission part and the mounting frame.

Further, unreel the subassembly including locating the bearing frame on first mount and the second mount, the inboard of bearing frame is equipped with puts a rope section of thick bamboo, it is equipped with first stay cord to put between a rope section of thick bamboo and the adjacent surface cleaning assembly.

Furthermore, the first transmission piece comprises a first rope winding drum arranged at the rotating end of the unwinding assembly, and a second rope is arranged between the first rope winding drum and the fixed platform.

Furthermore, the second transmission part comprises a winding rod and a second winding drum which are respectively arranged on the first winding drum and the other unwinding assembly, and a third pull rope is arranged between the second winding drum and the winding rod.

Further, the surface cleaning assembly comprises a connecting frame arranged on the inner side of the first fixing frame and the inner side of the second fixing frame, a rotating rod is arranged on the inner side of the connecting frame in a rotatable mode, an expansion spring is arranged between the connecting frame and the first fixing frame inside the first fixing frame, and a cleaning roller brush is arranged on the outer side of the rotating rod.

Further, the transmission assembly is including locating the rotation wheel in the roller and the lower roll outside, the outside of rotating the wheel is equipped with a plurality of inserted bars, be equipped with the swiveling wheel on the swiveling wheel, be equipped with a plurality of montants on the swiveling wheel, the rotatable formula of being equipped with the transfer line on the link, the both ends of transfer line are equipped with big drive wheel and little drive wheel respectively, the outside of big drive wheel is equipped with a plurality of slots with inserted bar looks adaptation, be equipped with a plurality of gomphosis grooves with montant looks adaptation on the little drive wheel.

Furthermore, still including locating a plurality of bullet springs of hitting of link inboard, the opposite side of bullet spring is equipped with the bullet and hits the ball, be equipped with a plurality of bullets on the bull stick and hit the piece, two adjacent bullets hit and are equipped with a bullet between the ball and hit the piece.

(3) Has the advantages that:

A. the invention improves the rolling process in the rolling process, and can clean impurities on the surface of the roller and collect the impurities in the rolling process of the upper roller and the lower roller by matching the surface cleaning assembly, the transmission assembly and the slag receiving box, thereby avoiding the surface of the plate from being scratched by the impurities left on the surface of the roller, reducing the probability of the plate with poor air tightness in the subsequent processing technology and improving the yield of the plate.

B. In the roll-in process, panel can be suitable for different roll-in intensity, therefore, the clamp plate region between last roller and the lower roll can be adjusted, at this moment, the cooperation unreels the subassembly, the use of first driving medium and second driving medium, move down the in-process at last roller, by the first stay cord of first wire winding section of thick bamboo coiling, at this moment, it can unreel first stay cord to unreel the rope winding section of thick bamboo, can link the surface cleaning subassembly and be close to last roller under expanding spring's elastic potential energy, and simultaneously, also can link the third stay cord and be reeled by the wire winding, the first stay cord in below can unreeling to the second wire winding section of thick bamboo, make the surface cleaning subassembly of below also be close to the lower roll under expanding spring's elastic potential energy, when adjusting the clamp plate region between last roller and the lower roll, also can adjust the contact distance of surface cleaning subassembly and roller surface simultaneously, when clamp plate intensity increases, the cleaning intensity of surface cleaning subassembly and ability enhancement pair roller.

Drawings

FIG. 1 is a front sectional view of a protective rolling device for producing a graphite electrode plate of a battery according to the present invention;

FIG. 2 is a three-dimensional structure diagram of the transmission assembly of the protective rolling device for producing the graphite polar plate of the battery of the invention;

FIG. 3 is a three-dimensional view of the connection between the second transmission member and the first rope winding drum of the protective rolling device for producing graphite electrode plates of batteries according to the present invention;

FIG. 4 is a three-dimensional position relationship diagram of the spring, the bouncing ball and the bouncing sheet of the protective rolling device for producing the graphite polar plate of the battery;

FIG. 5 is a connection diagram of a large transmission wheel and a rotating wheel of the protective rolling device for producing the battery graphite polar plate;

FIG. 6 is a partial side view of the upper and lower rollers of the protective rolling device for producing graphite plates of batteries according to the present invention;

fig. 7 is an enlarged view of the protective rolling device A for producing the graphite electrode plate of the battery.

The reference numbers are as follows:

the device comprises a mounting frame 1, an upper roller 2, a lower roller 3, a first fixing frame 4, a second fixing frame 5, a surface cleaning assembly 6, a connecting frame 61, a rotating rod 62, a cleaning roller brush 63, a transmission assembly 7, a rotating wheel 71, an inserting rod 72, a rotating wheel 73, a vertical rod 74, a transmission rod 75, a large transmission wheel 76, a small transmission wheel 77, a slag receiving box 8, a pressure adjusting assembly 9, an unreeling assembly 10, a bearing seat 101, a rope unreeling barrel 102, a first rope 103, a moving platform 11, a fixed platform 12, a first transmission piece 13, a first rope reeling barrel 131, a second rope 132, a first torsion spring 14, a second transmission piece 15, a winding rod 151, a second rope reeling barrel 152, a third rope 153, a second torsion spring 16, an impact spring 17, an impact ball 18 and an impact piece 19.

Detailed Description

The invention will be further illustrated with reference to the following figures 1 to 7 and examples:

as shown in fig. 1, fig. 2, fig. 5, fig. 6 and fig. 7, a protective rolling device for producing a battery graphite polar plate comprises a mounting frame 1 and an upper roller 2 and a lower roller 3 which are rotatably arranged in the mounting frame 1, a pressing plate area is arranged between the upper roller 2 and the lower roller 3, the rolling device comprises a starting device, the starting device comprises a motor connected with the upper roller 2 and the lower roller 3, so as to drive the upper roller 2 and the lower roller 3 to rotate for rolling operation, a first fixing frame 4 positioned at one side of the upper roller 2 away from the pressing plate area is arranged on the mounting frame 1, a second fixing frame 5 positioned at one side of the lower roller 3 away from the pressing plate area is arranged on the mounting frame 1, surface cleaning assemblies 6 respectively positioned at the outer sides of the upper roller 2 and the lower roller 3 are arranged at the inner sides of the first fixing frame 4 and the second fixing frame 5, a transmission assembly 7 is arranged at the rotating ends of the upper roller 2 and the lower roller 3, the transmission assembly 7 is connected with the adjacent surface cleaning assemblies 6 for driving the surface cleaning assemblies 6 to rotate along the circumferential direction, the first fixing frame 4 and the second fixing frame 5 are both provided with a slag receiving box 8 positioned below the surface cleaning assembly 6;

through the matched use of the surface cleaning assembly 6, the transmission assembly 7 and the slag receiving box 8, impurities on the surface of the roller can be cleaned and collected in the rolling process of the upper roller 2 and the lower roller 3, and the surface of the plate is prevented from being scratched by impurities left on the surface of the roller, so that the probability of the plate with poor air tightness in the subsequent processing technology is reduced, and the yield of the plate is improved;

further, the surface cleaning assembly 6 comprises a connecting frame 61 arranged at the inner sides of the first fixing frame 4 and the second fixing frame 5, a rotating rod 62 is rotatably arranged at the inner side of the connecting frame 61, a telescopic spring is arranged between the connecting frame 61 and the first fixing frame 4 in the first fixing frame 4, and a cleaning roller brush 63 is arranged at the outer side of the rotating rod 62;

the transmission assembly 7 comprises a rotating wheel 71 arranged on the outer sides of the upper roller 2 and the lower roller 3, a plurality of inserted rods 72 are arranged on the outer side of the rotating wheel 71, a rotating wheel 73 is arranged on the rotating rod 62, a plurality of vertical rods 74 are arranged on the rotating wheel 73, a transmission rod 75 is rotatably arranged on the connecting frame 61, a large transmission wheel 76 and a small transmission wheel 77 are respectively arranged at two ends of the transmission rod 75, a plurality of inserting grooves matched with the inserted rods 72 are formed in the outer side of the large transmission wheel 76, and a plurality of embedding grooves matched with the vertical rods 74 are formed in the small transmission wheel 77;

in this embodiment, as shown in fig. 4 and 7, the elastic striking device further includes a plurality of elastic striking springs 17 disposed inside the connecting frame 61, an elastic striking ball 18 is disposed on the other side of the elastic striking spring 17, a plurality of elastic striking plates 19 are disposed on the rotating rod 62, and an elastic striking plate 19 is disposed between two adjacent elastic striking balls 18;

the impact sheet 19 rotates and is continuously contacted with a plurality of impact balls 18, the impact balls 18 impact the next impact sheet 19 under the energy storage of the impact spring 17 to generate vibration, so that the cleaning roller brush 63 is vibrated, and the impurities cleaned by the cleaning roller brush 63 are shaken off and fall into the slag receiving box 8.

In this embodiment, as shown in fig. 1 and 3, the device further includes a pressure adjusting assembly 9 disposed on the mounting frame 1 and connected to the upper roller 2, the pressure adjusting assembly 9 is used for adjusting the size of a pressing plate area between the upper roller 2 and the lower roller 3, the first fixing frame 4 is movably disposed on the mounting frame 1 along the moving direction of the upper roller 2, and one end of the first fixing frame 4 is disposed on the rotating end of the upper roller 2 through a bearing;

further, unwinding assemblies 10 can be rotatably arranged on the first fixing frame 4 and the second fixing frame 5, the unwinding assemblies 10 are connected with the adjacent surface cleaning assembly 6, a moving table 11 and a fixed table 12 which are located at the upper roller 2 and are arranged up and down are respectively arranged on the mounting frame 1, the moving table 11 is movably arranged on the mounting frame 1, one unwinding assembly 10 is rotatably arranged on the moving table 11, a first transmission piece 13 is arranged between the unwinding assembly 10 connected with the moving table 11 and the fixed table 12, the first transmission piece 13 is used for driving the unwinding assembly 10 to rotate along the circumferential direction, and a first torsion spring 14 is arranged between the first transmission piece 13 and the moving table 11;

the unwinding assembly 10 comprises a bearing seat 101 arranged on the first fixing frame 4 and the second fixing frame 5, a rope unwinding barrel 102 is arranged on the inner side of the bearing seat 101, and a first pull rope 103 is arranged between the rope unwinding barrel 102 and the adjacent surface cleaning assembly 6;

the first transmission member 13 includes a first rope winding drum 131 disposed at the rotation end of the unwinding assembly 10, and a second rope 132 is disposed between the first rope winding drum 131 and the fixed platform 12.

In this embodiment, as shown in fig. 3, the unreeling device further includes a second transmission member 15 disposed between the transmission end of the first transmission member 13 and the other unreeling assembly 10, the second transmission member 15 is used for driving the other unreeling assembly 10 to rotate along the circumferential direction, and a second torsion spring 16 is disposed between the second transmission member 15 and the mounting frame 1;

the second transmission member 15 includes a winding rod 151 and a second winding cylinder 152 respectively disposed on the first winding cylinder 131 and the other unwinding assembly 10, and a third rope 153 is disposed between the second winding cylinder 152 and the winding rod 151.

The invention has the beneficial effects that:

the invention improves the rolling process in the rolling process, and can clean impurities on the surface of the roller and collect the impurities in the rolling process of the upper roller 2 and the lower roller 3 by matching the surface cleaning assembly 6, the transmission assembly 7 and the slag receiving box 8, thereby avoiding the surface of the plate from being scratched by the impurities left on the surface of the roller, reducing the probability of the plate with poor air tightness in the subsequent processing technology and improving the yield of the plate.

In the rolling process, the plate can be suitable for different rolling strengths, so that the pressing plate area between the upper roller 2 and the lower roller 3 can be adjusted, at the moment, the unreeling component 10, the first transmission piece 13 and the second transmission piece 15 are matched for use, in the moving down process of the upper roller 2, the second pull rope 132 is reeled by the first rope reel 131, at the moment, the rope unreeling reel 102 unreels the first pull rope 103, namely, the surface cleaning component 6 can be linked to be close to the upper roller 2 under the elastic potential energy of the expansion spring, meanwhile, the third pull rope 153 can be linked to be reeled by the reeling rod 151, the second rope reel 152 unreels the first pull rope 103 below, so that the surface cleaning component 6 below is also close to the lower roller 3 under the elastic potential energy of the expansion spring, when the pressing plate area between the upper roller 2 and the lower roller 3 is adjusted, the contact distance between the surface cleaning component 6 and the roller surface can be adjusted at the same time, when the pressing plate strength is increased, the surface cleaning component 6 can enhance the cleaning strength of the roller.

The working principle is as follows: firstly, a plate is placed in a pressing plate area, and an opening device of a rolling device starts an upper roller 2 and a lower roller 3 to roll the plate;

in the process of rotating the upper roller 2 and the lower roller 3, the rotating ends of the upper roller 2 and the lower roller 3 drive the rotating wheels 71 to rotate, the large driving wheels 76 and the small driving wheels 77 are linked to rotate, the rotating wheels 73 are driven by the small driving wheels 77 to rotate, so that the upper roller 2 and the adjacent cleaning roller brushes 63 are in the same turnover direction, the lower roller 3 and the adjacent cleaning roller brushes 63 are also in the same turnover direction, even if the cleaning roller brushes 63 clean impurities on the surfaces of the upper roller 2 and the lower roller 3, the impacting sheets 19 can rotate along with the rotation and are continuously contacted with the impacting balls 18, the impacting balls 18 impact the next impacting sheet 19 under the energy storage of the impacting springs 17 to generate vibration, so that the cleaning roller brushes 63 are vibrated, the impurities cleaned by the cleaning roller brushes 63 are shaken off and fall into the slag receiving box 8, and the cleaning process of the upper roller 2 and the lower roller 3 is completed;

then, when the pressing plate area between the upper roller 2 and the lower roller 3 is adjusted, the pressure adjusting assembly 9 drives the upper roller 2 to move downwards, and synchronously drives the first fixing frame 5, the surface cleaning assembly 6, the transmission assembly 7, the slag receiving box 8, the unreeling assembly 10, the moving table 11, the first rope winding drum 131 and the winding rod 151 to integrally move downwards, at this time, the second rope winding 132 is in a loose state, the first torsion spring 14 can drive the first rope winding drum 131 to wind the second rope winding drum 132, and the winding rod 151 on the first rope winding drum 131 rotates to wind the third rope winding 153, so that the second rope winding drum 152 rotates along with the winding;

at this time, the rotation of the first rope winding drum 131 and the second rope winding drum 152 can drive the rope unwinding drums 102 at the upper and lower sides to unwind the first pull rope 103, so that the surface cleaning assemblies 6 at the upper and lower sides move in the direction close to the upper roller 2 and the lower roller 3 under the elastic potential energy of the expansion spring, the cleaning roller brush 63 is more attached to the upper roller 2 and the lower roller 3, meanwhile, the slot on the large transmission wheel 76 is matched with the inserted rod 72 on the rotating wheel 71, the inserted rod 72 can move along the slot in the moving process of the cleaning roller brush 63, and when the upper roller 2 is adjusted to a target position, the cleaning roller brush 63 and the inserted rod also stop moving, namely, the adjustment operation between the cleaning roller brush 63 and the upper roller 2 and the lower roller 3 is completed.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.