阅读说明：本技术 一种瓦楞纸板生产用压合装置及方法 (Pressing device and method for corrugated board production ) 是由 徐伟 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种瓦楞纸板生产用压合装置及方法,包括机体,机体内转动连接有压合辊,压合辊下方设有瓦楞辊；还包括设于机体上的胶水箱；贴胶组件,用于将胶水箱内的胶水贴合到经瓦楞辊处理的芯纸的折叠点上的贴胶组件设于瓦楞辊侧面；挤压组件,用于间隔挤压胶水至芯纸的折叠点上的挤压组件设于贴胶组件上,通过伸缩杆和第一限位杆以及限位框的作用,使接触板贴合到瓦楞辊并随之转动,避免常规的刮取胶水工艺使芯纸的折弯点的侧面上刮到到胶水,又胶水呈间隔的挤压到芯纸,配合接触板呈前后方向的往复移动,将接触板上的胶水充分的抹匀在芯纸上,有利于节约成本。(The invention discloses a pressing device and a pressing method for corrugated board production, which comprise a machine body, wherein a pressing roller is rotatably connected in the machine body, and a corrugated roller is arranged below the pressing roller; the glue tank is arranged on the machine body; the rubberizing component is used for attaching the glue in the glue tank to the folding point of the medium paper processed by the corrugating roller and is arranged on the side surface of the corrugating roller; the extrusion subassembly for on the folding point of interval extrusion glue to core paper extrusion subassembly locates the rubberizing subassembly, through the effect of telescopic link and first gag lever post and spacing frame, make the contact plate laminate the corrugating roller and rotate thereupon, avoid the conventional glue technology of getting of scraping to scrape on the side of the point of bending that makes the core paper and scrape glue, glue is the spaced extrusion core paper again, the cooperation contact plate is the reciprocating motion of fore-and-aft direction, the glue on the contact plate is abundant smears evenly on the core paper, be favorable to practicing thrift the cost.)

1. A laminating arrangement for corrugated board production, comprising:

the corrugated roller press comprises a machine body (1), wherein a press roller (2) is rotationally connected in the machine body (1), and a corrugated roller (3) is arranged below the press roller (2);

it is characterized by also comprising:

a glue tank (4) arranged on the machine body (1);

the rubberizing component (5) is used for applying the glue in the glue tank (4) to a folding point of the medium paper processed by the corrugating roller (3), and the rubberizing component (5) is arranged on the side surface of the corrugating roller (3);

and the extruding assembly (18) is used for extruding glue to the folding point of the core paper at intervals, and the extruding assembly (18) is arranged on the rubberizing assembly (5).

2. A laminating device for corrugated cardboard production according to claim 1, characterised in that: rubberizing subassembly (5) include with organism (1) outside is connected fixed motor (6), motor (6) output shaft fixedly connected with penetrates bull stick (7) in organism (1), organism (1) inner wall is two spacing frames (8) of symmetrical structure fixedly connected with, two it is to arrange between spacing frame (8) and is equipped with hollow movable block (9) of a plurality of inside, movable block (9) outside sliding fit have with corrugated roller (3) support press fit's contact plate (10), be evenly distributed on contact plate (10) and seted up a plurality of through-holes, glue tank (4) with bull stick (7) with movable block (9) communicate each other through the activity hose, movable block (9) both sides rotate be connected with spacing frame (8) sliding fit's first gag lever post (11), first gag lever post (11) outer fixed surface be connected with bull stick (7) are connected fixed telescopic link (12) And a stability maintaining component (13) used for ensuring the relative position of the movable block (9) and the corrugated roller (3) is arranged on the telescopic rod (12).

3. A laminating device for corrugated cardboard production according to claim 2, characterised in that: the stability maintaining component (13) comprises a first fixing plate (14) fixedly connected with a telescopic rod (12), a first limiting rod (11) is located at the top of a movable block (9), a limiting sleeve (15) is fixedly connected to the bottom of the movable block (9), a second limiting rod (16) is connected to the limiting sleeve (15) in a rotating mode, and a first pressure spring (17) is hung and matched between the second limiting rod (16) and the first fixing plate (14).

4. A laminating device for corrugated cardboard production according to claim 1, characterised in that: the extrusion assembly (18) comprises a plurality of first clamping teeth (19) fixedly connected with one side of the outer surface of the rotating rod (7), the movable block (9) is internally and rotatably connected with a rotating plate (20), the end part of the rotating plate (20) is fixedly connected with a third limiting rod (21) penetrating out of the movable block (9), the third limiting rod (21) is fixedly connected with a first rotating wheel (22), the outer surfaces of the rotating rod (7) and the first rotating wheel (22) are provided with a first transmission belt (23), the middle part of the first transmission belt (23) has elastic tensioning performance, the outer surface of the first transmission belt (23) is fixedly connected with a second fixing plate (24), a second pressure spring (25) is hung and matched between the second fixing plate (24) and the first fixing plate (14), and one end inner wall of the first transmission belt (23) is meshed and contacted with the first rotating wheel (22), the inner wall of the other end of the first transmission belt (23) is fixedly connected with a plurality of second clamping teeth (26) which are distributed at intervals and meshed with the first clamping teeth (19), and the third limiting rod (21) is provided with a uniform smearing component (27) which is used for moving the contact plate (10) in a reciprocating mode.

5. A laminating device for corrugated cardboard production according to claim 4, characterised in that: the troweling component (27) comprises a fourth limiting rod (28) which is rotatably connected with the movable block (9) and the first limiting rod (11) at the same time, the middle part of the fourth limiting rod (28) is fixedly connected with a first gear (29), the outer surface of the first transmission belt (23) is fixedly connected with a third latch (30) which is in meshing transmission with the first gear (29), the end part of the fourth limiting rod (28) is fixedly connected with a first bevel gear (31), the first bevel gear (31) is in meshing transmission with a second bevel gear (32), the middle shaft of the second bevel gear (32) is fixedly connected with a second gear (33) which is in rotating fit with the limiting sleeve (15), the second gear (33) is in meshing transmission with a rack (34), and the end part of the rack (34) is fixedly connected with a movable plate (35) which penetrates into the movable block (9), the end part of the movable plate (35) is in press fit with the contact plate (10).

6. A laminating device for corrugated cardboard production according to claim 4, characterised in that: the even subassembly (27) of wiping still include with third gag lever post (21) end connection fixed second runner (36), second runner (36) side is equipped with third runner (37), second runner (36) and third runner (37) surface toothing have second drive belt (38), third runner (37) axis fixedly connected with penetrates lead screw (39) inside movable block (9), contact plate (10) inboard fixedly connected with lead screw (39) screw-thread fit's threaded sleeve (40).

7. A laminating device for corrugated cardboard production according to claim 5, characterised in that: the end part of the movable plate (35) is fixedly connected with a fifth limiting rod (41), and a limiting groove (42) in sliding fit with the fifth limiting rod (41) is formed in the inner side of the contact plate (10).

8. A laminating device for corrugated cardboard production according to claim 2, characterised in that: the shape of the upper part of the limiting frame (8) is adapted to the shape of the corrugated roller (3).

9. A method of pressing for corrugated board production according to any one of claims 1 to 8, comprising the steps of;

s1, bunching, namely enabling the liner paper to pass through a roller wheel at the upper part and pass through a space between the corrugated rollers (3) and the press-fit roller (2), and enabling the paper of the core paper layer to sequentially pass through a space between the two corrugated rollers (3), a space between the corrugated rollers (3) and the contact plate (10), and a space between the press-fit roller (2) and the corrugated rollers (3), and simultaneously enabling the paper of the liner paper and the paper of the core paper layer to be attached between the corrugated rollers (3) and the press-fit roller (2) and adjusting the positions of the two;

s2, pre-starting equipment, namely enabling the pressing roller (2) and the corrugated roller (3) to rotate at a low speed, simultaneously preheating the glue tank (4), adjusting the positions of the liner paper and the core paper layer, and adjusting the condition of glue;

and S3, starting, namely starting the equipment comprehensively to enable the pressing roller (2) and the corrugated roller (3) to rotate normally, and starting the motor (6) to keep the rotating speeds of the rotating rod (7) and the corrugated roller (3) consistent.

Technical Field

The invention relates to the technical field of corrugated board pressing devices, in particular to a pressing device and a pressing method for corrugated board production.

Background

The corrugated paper is formed by bonding facing paper and core paper, the core paper is rolled into a wave shape through the corrugated rollers at a certain temperature and humidity, the corrugated paper is generally pressed by a positive pressure card box type single corrugating machine, the top of the corrugated paper is conveyed with the facing paper through a pressure roller, the core paper is bent into a corrugated shape through the corrugated rollers and a lower corrugated roller, the core paper bending part is bonded with glue through a paste roller, the driven core paper is bonded with the facing paper, and the facing paper and the core paper are bonded and formed and conveyed out under the extrusion of the corrugated rollers and the pressure roller.

In the operation process of the existing corrugating machine, the driven core paper and the pasting roller are in mutual contact, when the corrugated core paper scrapes glue, the glue is easily scraped on the side surface of a bending point of the core paper, the redundant waste of the glue is caused, the economic cost is increased, the glue content is too much, and the environment-friendly function of corrugated paper is not facilitated.

Disclosure of Invention

The invention aims to provide a pressing device and a pressing method for producing corrugated boards, which can save glue and solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a pressing device for corrugated board production comprises a machine body, wherein a pressing roller is rotationally connected in the machine body, and a corrugated roller is arranged below the pressing roller; the glue tank is arranged on the machine body; the rubberizing component is used for attaching the glue in the glue tank to a folding point of the medium paper processed by the corrugating roller and is arranged on the side surface of the corrugating roller; and the extruding assembly is used for extruding glue to the folding point of the core paper at intervals and is arranged on the rubberizing assembly.

Preferably, the rubberizing component comprises a motor fixedly connected with the outer side of the machine body, an output shaft of the motor is fixedly connected with a rotating rod penetrating into the machine body, the inner wall of the machine body is in a symmetrical structure and is fixedly connected with two limiting frames, a plurality of movable blocks with hollow interiors are arranged between the two limiting frames, a contact plate which is in abutting fit with the corrugated roller is in sliding fit with the outer side of the movable block, a plurality of through holes are uniformly distributed on the contact plate, the glue tank is communicated with the rotating rod and the movable block through movable hoses, two sides of the movable block are rotatably connected with first limiting rods in sliding fit with the limiting frames, the outer surface of the first limiting rod is fixedly connected with a telescopic rod fixedly connected with the rotating rod, and a stability maintaining component used for ensuring the relative position of the movable block and the corrugated roller is arranged on the telescopic rod. Preferably, the stability maintaining component comprises a first fixing plate fixedly connected with the telescopic rod, the first limiting rod is located at the top of the movable block, a limiting sleeve is fixedly connected to the bottom of the movable block, a second limiting rod is rotatably connected to the limiting sleeve, and a first pressure spring is hung and matched between the second limiting rod and the first fixing plate.

Preferably, the extrusion assembly comprises a plurality of first latch teeth fixedly connected with one side of the outer surface of the rotating rod, a rotating plate is rotatably connected inside the movable block, the end part of the rotating plate is fixedly connected with a third limiting rod which penetrates out of the movable block, a first rotating wheel is fixedly connected on the third limiting rod, a first transmission belt is arranged on the outer surfaces of the rotating rod and the first rotating wheel, the middle part of the first transmission belt has elastic tension performance, the outer surface of the first transmission belt is fixedly connected with a second fixing plate, a second pressure spring is hung and matched between the second fixing plate and the first fixing plate, the inner wall of one end of the first transmission belt is meshed and contacted with the first rotating wheel, the inner wall of the other end of the first transmission belt is fixedly connected with a plurality of second clamping teeth which are distributed at intervals and meshed with the first clamping teeth, and the third limiting rod is provided with a uniform smearing component used for moving the contact plate in a reciprocating mode.

Preferably, the uniform smearing component comprises a fourth limiting rod which is rotatably connected with the movable block and the first limiting rod, a first gear is fixedly connected to the middle of the fourth limiting rod, a third clamping gear in meshing transmission with the first gear is fixedly connected to the outer surface of the first transmission belt, a first bevel gear is fixedly connected to the end portion of the fourth limiting rod, the first bevel gear is in meshing transmission with a second bevel gear, a second bevel gear shaft is fixedly connected with a second gear in rotating fit with the limiting sleeve, a rack is in meshing transmission with the second gear, the end portion of the rack is fixedly connected with a movable plate penetrating into the movable block, and the end portion of the movable plate is in press fit with the contact plate.

Preferably, the uniform smearing assembly further comprises a second rotating wheel fixedly connected with the end of the third limiting rod, a third rotating wheel is arranged on the side of the second rotating wheel, a second transmission belt is meshed with the outer surfaces of the second rotating wheel and the third rotating wheel, a screw rod penetrates through the inner part of the movable block, and a threaded sleeve in threaded fit with the screw rod is fixedly connected to the inner side of the contact plate.

Preferably, a fifth limiting rod is fixedly connected to the end portion of the movable plate, and a limiting groove in sliding fit with the fifth limiting rod is formed in the inner side of the contact plate, so that the movable plate is prevented from being adjusted and the screw rod is prevented from being adjusted. Preferably, the shape of the upper part of the limiting frame is matched with the shape of the corrugated roller, so that the movable block positioned at the lower part is smoothly attached to the corrugated roller in the process of moving to the upper part.

A pressing method for corrugated board production comprises the following steps;

s1, bundling, namely enabling the liner paper to pass through a roller on the upper part and pass through the space between the corrugated rollers and the press-fit roller, and enabling the paper of the core paper layer to sequentially pass through the space between the two corrugated rollers, the space between the corrugated rollers and the contact plate and the space between the press-fit roller and the corrugated rollers, and enabling the liner paper and the paper of the core paper layer to be attached between the corrugated rollers and the press-fit roller and adjusting the positions of the two rollers;

s2, pre-starting equipment, namely enabling the pressing roller and the corrugated roller to rotate at a low speed, simultaneously preheating the glue tank, adjusting the positions of the liner paper and the core paper layer, and adjusting the glue condition;

and S3, starting, namely starting the equipment comprehensively to enable the pressing roller and the corrugated roller to rotate normally, and starting the motor to keep the rotating speeds of the rotating rod and the corrugated roller consistent.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the contact plate is attached to the corrugating roller and rotates along with the corrugating roller under the action of the telescopic rod, the first limiting rod and the limiting frame, the phenomenon that the glue is scraped on the side surface of the bending point of the core paper by a conventional glue scraping process to cause redundant waste of the glue is avoided, in addition, the self-adaptive adjustment can be realized in the up-and-down moving process of the movable block, the collision of the movable block and the corrugating roller in the adjustment process is avoided, the glue is extruded to the core paper at intervals, and the glue on the contact plate is fully smeared on the core paper in a reciprocating manner in the front-and-back direction in cooperation with the contact plate, so that the cost is favorably saved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the structure of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of FIG. 3;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4;

FIG. 6 is a schematic side view of the structure of FIG. 5;

FIG. 7 is a schematic side view of the structure of FIG. 6;

FIG. 8 is a schematic diagram of FIG. 7 with the structure broken away;

FIG. 9 is a schematic diagram illustrating a partial structure test in FIG. 8;

FIG. 10 is an enlarged view of the structure in area A of FIG. 9;

FIG. 11 is a schematic view of FIG. 10 with the structure broken away;

FIG. 12 is a schematic cross-sectional view of the upper structure of FIG. 9;

FIG. 13 is a schematic view of the structure of FIG. 12, shown disassembled;

FIG. 14 is a side view of the partial structure of FIG. 13;

fig. 15 is a schematic sectional view of the structure in the region B in fig. 14.

In the figure: 1-body; 2-a press-fit roller; 3-corrugating rollers; 4-glue water tank; 5-rubberizing components; 6, a motor; 7-rotating the rod; 8-a limit frame; 9-a movable block; 10-a contact plate; 11-a first stop bar; 12-a telescopic rod; 13-a dimensionally stable component; 14-a first fixing plate; 15-a limit sleeve; 16-a second stop bar; 17-a first compression spring; 18-a pressing assembly; 19-a first latch; 20-rotating the plate; 21-a third stop lever; 22-a first wheel; 23-a first drive belt; 24-a second fixing plate; 25-a second pressure spring; 26-a second latch; 27-a troweling component; 28-a fourth stop bar; 29-a first gear; 30-a third latch; 31-a first bevel gear; 32-a second bevel gear; 33-a second gear; 34-a rack; 35-a movable plate; 36-a second wheel; 37-a third wheel; 38-a second drive belt; 39-a screw rod; 40-a threaded sleeve; 41-a fifth limiting rod; 42-limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 and 5, a pressing device for corrugated board production in the drawings includes a machine body 1, a pressing roller 2 is rotatably connected to the machine body 1, and a corrugating roller 3 is arranged below the pressing roller 2; the glue machine also comprises a glue tank 4 arranged on the machine body 1; the rubberizing component 5 is used for attaching the glue in the glue box 4 to the folding point of the core paper processed by the corrugating roller 3, and the rubberizing component 5 is arranged on the side surface of the corrugating roller 3; a squeezing assembly 18, a squeezing assembly 18 for squeezing glue to the folding point of the core paper at intervals is arranged on the rubberizing assembly 5.

Referring to fig. 2-6, the illustrated rubberizing assembly 5 includes a motor 6 fixedly connected to an outer side of the machine body 1, an output shaft of the motor 6 is fixedly connected to a rotating rod 7 penetrating into the machine body 1, an inner wall of the machine body 1 is fixedly connected to two limiting frames 8 in a symmetrical structure, a plurality of movable blocks 9 having hollow interiors are arranged between the two limiting frames 8, a contact plate 10 in press fit with the corrugated roller 3 is slidably fitted to an outer side of the movable blocks 9, a plurality of through holes are uniformly distributed on the contact plate 10, the glue tank 4 is communicated with the rotating rod 7 and the movable blocks 9 through movable hoses, first limiting rods 11 slidably fitted to the limiting frames 8 are rotatably connected to two sides of the movable blocks 9, telescopic rods 12 fixedly connected to outer surfaces of the first limiting rods 11 and fixedly connected to the rotating rod 7, and stabilizing assemblies 13 for ensuring relative positions of the movable blocks 9 and the corrugated roller 3 are disposed on the telescopic rods 12.

Referring to fig. 6-8, the stabilizing assembly 13 shown in the drawings includes a first fixing plate 14 connected and fixed with the telescopic rod 12, a first limiting rod 11 is located at the top of the movable block 9, a limiting sleeve 15 is fixedly connected to the bottom of the movable block 9, a second limiting rod 16 is rotatably connected to the limiting sleeve 15, and a first pressure spring 17 is hooked and matched between the second limiting rod 16 and the first fixing plate 14.

Referring to fig. 9-13, the illustrated extrusion assembly 18 includes a plurality of first latches 19 fixedly connected to one side of an outer surface of the rotating rod 7, a rotating plate 20 rotatably connected to an inside of the movable block 9, a third limiting rod 21 penetrating through the movable block 9 and fixedly connected to an end of the rotating plate 20, a first rotating wheel 22 fixedly connected to the third limiting rod 21, a first driving belt 23 disposed on an outer surface of the rotating rod 7 and the first rotating wheel 22, a middle portion of the first driving belt 23 having an elastic tensioning performance, a second fixing plate 24 fixedly connected to an outer surface of the first driving belt 23, a second compression spring 25 engaged between the second fixing plate 24 and the first fixing plate 14, an inner wall of one end of the first driving belt 23 engaging with the first rotating wheel 22, a plurality of second latches 26 spaced apart from and engaged with the first latches 19 and fixedly connected to an inner wall of the other end of the first driving belt 23, and a leveling assembly 27 for leveling the reciprocating movable contact plate 10 disposed on the third limiting rod 21.

Referring to fig. 1 and 3, the upper part of the limiting frame 8 is shaped to match the shape of the corrugating roll 3. In addition, the pressing method for producing the corrugated board comprises the following steps;

s1, bundling, namely enabling the liner paper to pass through a roller wheel on the upper part and pass through a space between a corrugated roller 3 and a press roller 2, and enabling the paper of a core paper layer to sequentially pass through a space between the two corrugated rollers 3, a space between the corrugated roller 3 and a contact plate 10 and a space between the press roller 2 and the corrugated roller 3, and enabling the liner paper and the paper of the core paper layer to be attached between the corrugated roller 3 and the press roller 2 and adjusting the positions of the two;

s2, pre-starting equipment to enable the pressing roller 2 and the corrugated roller 3 to rotate at a low speed, and meanwhile, preheating a glue water tank 4 to adjust the positions of the liner paper and the core paper layer and adjust the glue condition;

and S3, starting the equipment comprehensively to enable the pressing roller 2 and the corrugated roller 3 to rotate normally, and starting the motor 6 at the same time.

In the embodiment, the motor 6 is started to drive the rotating rod 7 to rotate, the glue in the glue tank 4 enters the movable block 9 through the rotating rod 7 and the movable hose, and the first limiting rod 11 drives the movable block 9 to move along the limiting frame 8 through the telescopic rod 12 which is extended in a self-adaptive manner, so that the contact plate 10 is attached to the corrugating roller 3, the contact plate 10 and the corrugating roller 3 are enabled to rotate coaxially, the two do not move mutually, the situation that the glue is scraped on the side surface of the bending point of the core paper by a conventional glue scraping process to cause unnecessary waste of the glue is avoided, during the movement, the movable block 9 can conveniently and smoothly move from the limiting frame 8 under the action of the first pressure spring 17, the movable block 9 in the sliding process is prevented from rotating excessively and colliding with the corrugating roller 3, the rotating rod 7 drives the first clamping teeth 19 to rotate and be meshed with the second clamping teeth 26 which are distributed at intervals, the first transmission belt 23 and the third limiting rod 21 are rotated, when the first latch 19 and the second latch 26 are separated from contact, the position without the first latch 19 on the rotating rod 7 is overlapped with the position without the second latch 26 on the first transmission belt, under the action of the second pressure spring 25, the first transmission belt is rotated in a return mode, so that the third limiting rod 21 drives the rotating plate 20 to rotate back and forth, the glue in the movable block 9 is pressed and extruded from the through hole in the contact plate 10 and coated on the folding position of the core paper, finally, at the top end of the limiting frame 8, the movable block 9 drives the contact plate 10 to be separated from the laminating relation with the corrugated roller 3, and the core paper and the hanging paper which are adhered with the glue are adhered and formed under the action of the corrugated roller 3 and the laminating roller 2.

Example two

Referring to fig. 13-14, the leveling assembly 27 shown in the figure includes a fourth limiting rod 28 rotatably connected to the movable block 9 and the first limiting rod 11, a first gear 29 fixedly connected to a middle portion of the fourth limiting rod 28, a third latch 30 fixedly connected to an outer surface of the first transmission belt 23 and engaged with the first gear 29, a first bevel gear 31 fixedly connected to an end portion of the fourth limiting rod 28, a second bevel gear 32 engaged with the first bevel gear 31, a second gear 33 rotatably engaged with the limiting sleeve 15 and fixedly connected to a middle shaft of the second bevel gear 32, a rack 34 engaged with the second gear 33, a movable plate 35 penetrating into the movable block 9 and fixedly connected to an end portion of the rack 34, and a contact plate 10 press-fitted to an end portion of the movable plate 35.

In this embodiment, while the first transmission belt rotates reciprocally, the third latch 30 is meshed with the first gear 29 for transmission, so that the fourth limiting rod 28 drives the first bevel gear 31 to rotate reciprocally, and the rack 34 drives the movable plate 35 and the contact plate 10 to reciprocate back and forth under the action of the second bevel gear 32, so as to sufficiently and evenly spread the glue on the contact plate 10 on the core paper in cooperation with the glue extruded from the through hole.

EXAMPLE III

Referring to fig. 13-14, the troweling assembly 27 shown in the figure further includes a second rotating wheel 36 connected and fixed to the end of the third limiting rod 21, a third rotating wheel 37 is disposed on the side of the second rotating wheel 36, a second transmission belt 38 is engaged with the outer surfaces of the second rotating wheel 36 and the third rotating wheel 37, a screw rod 39 penetrating into the movable block 9 is fixedly connected to the center shaft of the third rotating wheel 37, and a threaded sleeve 40 in threaded engagement with the screw rod 39 is fixedly connected to the inner side of the contact plate 10.

Referring to fig. 15, a fifth limiting rod 41 is fixedly connected to an end of the movable plate 35, and a limiting groove 42 slidably engaged with the fifth limiting rod 41 is formed on an inner side of the contact plate 10.

In this embodiment, the first transmission belt rotates reciprocally and drives the second rotating wheel 36, the third rotating wheel 37 and the second rotating belt to perform reciprocating rotation, so as to drive the screw rod 39 to rotate in the threaded sleeve 40, and the threaded sleeve 40 drives the contact plate 10 to perform reciprocating motion by matching with the sliding limitation of the movable block 9 on the contact plate 10, so as to enhance the uniform wiping effect, and avoid the difference between the amplitude adjusted by the movable plate 35 and the amplitude adjusted by the screw rod 39 and the interference caused by the movable fit of the fifth limiting rod 41 and the limiting groove 42.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.