CN112059768A

CN112059768A - Polishing and cleaning equipment for metal plate

Info

Publication number: CN112059768A
Application number: CN202011035599.4A
Authority: CN
Inventors: 黄建顾
Original assignee: Pinghu Huadeng Cup Industry Co Ltd
Current assignee: Pinghu Huadeng Cup Industry Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2020-12-11

Abstract

The invention discloses polishing and cleaning equipment for metal plates, which comprises a machine body and a working cavity in the machine body, wherein a metal clamping device is arranged in the polishing and cleaning equipment, and a sliding rod II and a sliding rod I are respectively meshed with a spline of a threaded rod through driving, so that a sliding clamping block is driven to move forwards or backwards through rotating the threaded rod, and the sliding clamping block II can vertically clamp and fix the metal plates with different back degrees, so that the metal plates are polished and cleaned more conveniently; the polishing machine is provided with the moving driving device, and the metal plate can be driven to move towards the right side by driving the moving sliding block to move rightwards, so that the machine replaces the manual work, and the polishing efficiency is improved; the metal plate polishing device is provided with the polishing device, and the guide slide rod III can be driven to move forwards through the rotation of the rotating shaft III to adjust the position of the polishing wheel positioned on the rear side of the working cavity, so that the polishing device can adjust the polishing distance according to the thickness of a metal plate.

Description

Polishing and cleaning equipment for metal plate

Technical Field

The invention relates to the technical field related to metal plate processing, in particular to polishing and cleaning equipment for a metal plate.

Background

The metal plate is a commonly used plate, and can be processed into various metal products, so that convenience is provided for life or work of people; general metal sheet can produce deckle edge after processing, and the metal sheet generally can rust under humid environment for a long time, and these all need polish and wash the processing to the metal sheet, and current metal equipment of polishing is generally to overturning to the metal sheet of laying flat and polish, then carries out solitary washing again, and clear general inefficiency ratio is lower like this moreover, so need design a cleaning equipment of polishing for the metal sheet.

Disclosure of Invention

The object of the present invention is to provide a polishing and cleaning device for metal sheets, which overcomes the above-mentioned drawbacks of the prior art.

According to the invention, the polishing and cleaning equipment for the metal plate comprises a machine body, a working cavity is arranged in the machine body, clamping devices for clamping the metal plate are symmetrically arranged on the upper side and the lower side of the working cavity, the metal clamping devices comprise fixed plates which are symmetrically arranged on the upper side and the lower side of the working cavity and are used for clamping and fixing the metal plate, a fixed clamping plate is arranged on the front side of the fixed plate, a first guide sliding rod is fixedly arranged between the fixed clamping plate and the fixed plate, a threaded rod is rotatably arranged on the rear side of the fixed clamping plate and the fixed plate, a first sliding clamping block which is slidably arranged with the first guide sliding rod is arranged on the fixed clamping plate in a threaded manner, a second sliding clamping block which is used for clamping the metal plate is fixedly arranged on one side of the first sliding clamping block close to the working cavity, and a fixed clamping block which is used for clamping the metal plate is fixedly arranged on, an upper side chute in the side wall body, a lower side chute in the lower side wall body of the working cavity, a movable sliding block is arranged in the working cavity in a sliding manner, a first sliding clamping block positioned on the upper side of the working cavity is fixedly arranged on the lower side of the movable sliding block, a movable driving device for driving a metal plate to move is arranged on the left side of the movable sliding block, the movable driving device comprises a gear cavity arranged in the machine body on the left side of the upper side chute, a first belt wheel cavity is arranged on the rear side of the gear cavity, a second belt wheel cavity is arranged in the machine body between the first belt wheel cavity and the upper side chute, a first rotating shaft is rotatably arranged between the first belt wheel cavity and the gear cavity, an upper side threaded rod connected with the movable sliding block in a threaded engagement manner is rotatably arranged between the gear cavity and the upper side chute, and a second guide sliding rod slidably mounted with the movable sliding, the belt wheel type metal plate polishing device is characterized in that a motor is arranged on the inner side of the rear side wall of the belt wheel cavity in a sliding mode, a rotating shaft sleeve is fixedly arranged on a motor power output shaft and is slidably mounted with a rotating shaft, a first sliding cavity is arranged on the inner side of the front side wall of the belt wheel cavity in a sliding mode, the rotating shaft sleeve is slidably mounted in the first sliding cavity, a first electromagnet is fixedly arranged on the front side wall of the first sliding cavity, a second electromagnet is fixedly arranged on the wall body of the front side of the first sliding cavity, the first electromagnet and the second electromagnet can drive the rotating shaft sleeve to slide towards the front side when being powered on, the rotating shaft sleeve is connected with the rotating shaft through spline in a meshing mode, a clamping driving device used for driving clamping is arranged in the belt wheel cavity, a polishing device used for polishing a metal plate is arranged on the front side and.

On the basis of the technical scheme, the mobile driving device further comprises a first bevel gear fixedly arranged in the gear cavity and arranged on the first rotating shaft, a second bevel gear meshed with the first bevel gear is fixedly arranged on the upper threaded rod in the gear cavity, a lower sliding block is slidably arranged in the lower sliding groove, a first sliding clamping block and the lower sliding block which are arranged on the lower side of the working cavity are fixedly installed, and a first sliding clamping block and the mobile sliding block which are arranged on the upper side of the working cavity are fixedly installed.

On the basis of the technical scheme, the clamping driving device comprises a rotating shaft II which is rotatably arranged between the working cavity and the belt wheel cavity I, the rotating shaft sleeve in the belt wheel cavity I is connected with a left rotating belt wheel in a spline meshing manner, an intermediate belt wheel is fixedly arranged on the rotating shaft II in the belt wheel cavity I, a synchronous belt I is arranged between the intermediate belt wheel and the left rotating belt wheel, when the rotating shaft sleeve slides downwards, the rotating shaft sleeve is separated from the left rotating belt wheel in a meshing manner, the rotating shaft sleeve is connected with the rotating shaft I in a meshing manner, a sliding cavity II is rotatably arranged between the belt wheel cavity II and the working cavity, a synchronous belt wheel I is fixedly arranged on the sliding cavity II in the belt wheel cavity II, a synchronous belt II is arranged between the synchronous belt wheel I and the synchronous belt wheel II, and a sliding rod I installed by a spline is slidably arranged in the front side wall body of the sliding cavity II, slide bar one with the rear side with be equipped with electro-magnet three between the sliding chamber two, electro-magnet three can drive slide bar one back-and-forth movement, the internal sliding chamber three that is equipped with of two preceding lateral walls of pivot, it is equipped with slide bar two to slide in the sliding chamber three, two rear sides of slide bar are equipped with and can drive two gliding electro-magnets four around of slide bar, the internal spline chamber that is equipped with of lateral wall before the threaded rod, slide bar two can slide in and be located the working chamber upside in the spline chamber with the installation of threaded rod spline, slide bar one can slide in and be located the working chamber downside in the spline chamber with the installation of threaded rod spline.

On the basis of the technical scheme, the grinding device comprises a third rotating shaft which is rotatably arranged between a first belt wheel cavity and a rear grinding cavity, a right belt wheel is fixedly arranged on the third rotating shaft in the first belt wheel cavity, a third synchronous belt is arranged between the right belt wheel and a middle belt wheel, a rear grinding box which is meshed with the three rotating shafts in a threaded manner is arranged in the rear grinding cavity, a third guide sliding rod which is slidably arranged on the rear grinding box is fixedly arranged on the rear wall body of the rear grinding cavity, so that the rear grinding box can move back and forth, a grinding wheel which can move back and forth is rotatably arranged on the lower side of the rear grinding box, and a fixed grinding wheel which is used for grinding is arranged on the lower side of the front grinding box in the front grinding cavity.

On the basis of the technical scheme, the cleaning device comprises a symmetrical structure and is arranged on the front side and the rear side of the upper side sliding groove and a water tank in the machine body, a cleaning box of the symmetrical structure is fixedly arranged in the front side wall body and the rear side wall body of the working cavity, the cleaning box is close to the working cavity, a cleaning spray bar capable of cleaning the metal plate is fixedly arranged in the working cavity side wall body, a water pipe is arranged between the cleaning box and the water tank, and a collecting cavity used for collecting liquid after cleaning is arranged in the working cavity side wall body.

The invention has the beneficial effects that: the metal clamping device is arranged, the second sliding rod and the first sliding rod can be respectively meshed and connected with the spline of the threaded rod through driving, so that the sliding clamping block is driven to move forwards or backwards through rotating the threaded rod, the second sliding clamping block can vertically clamp and fix metal plates with different backsides, and the metal plates are more convenient to polish and clean; the polishing machine is provided with the moving driving device, and the metal plate can be driven to move towards the right side by driving the moving sliding block to move rightwards, so that the machine replaces the manual work, and the polishing efficiency is improved; the metal plate polishing device is provided with the polishing device, and the guide slide rod III can be driven to move forwards through the rotation of the rotating shaft III to adjust the position of the polishing wheel positioned on the rear side of the working cavity, so that the polishing device can adjust the polishing distance according to the thickness of a metal plate.

The metal plate cleaning device is provided with the cleaning device, the polished surface of the metal plate can be cleaned by spraying water forwards and backwards, and the cleaning liquid flows out of the collecting cavity for collection after cleaning, so that the cleaning efficiency is improved.

Drawings

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

FIG. 1 is a schematic view showing the overall construction of a polishing and cleaning apparatus for metal plates;

FIG. 2 is a cross-sectional view taken at "A-A" of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of the invention at B in FIG. 2;

FIG. 4 is an enlarged view of a portion of the invention at C in FIG. 2;

FIG. 5 is a cross-sectional view taken at "D-D" of FIG. 3 in accordance with the present invention;

FIG. 6 is a cross-sectional view taken at "E-E" of FIG. 1 in accordance with the present invention;

FIG. 7 is an enlarged fragmentary view at F of FIG. 6 of the present invention;

FIG. 8 is a cross-sectional view taken at "G-G" of FIG. 1 in accordance with the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 8, a polishing and cleaning apparatus for metal plates according to an embodiment of the present invention includes a machine body 10, a working chamber 18 in the machine body 10, clamping devices 901 symmetrically arranged on upper and lower sides of the working chamber 18 for clamping metal plates, the metal clamping devices 901 including fixing plates 70 symmetrically arranged on upper and lower sides of the working chamber 18 for clamping and fixing metal plates, a fixing clamping plate 60 arranged on a front side of the fixing plate 70, a first guide slide rod 61 fixedly arranged between the fixing clamping plate 60 and the fixing plate 70, a threaded rod 62 rotatably arranged on a rear side of the fixing clamping plate 60 and the fixing plate 70, a first sliding clamping block 35 slidably mounted with the first guide slide rod 61 and threadedly mounted on the fixing clamping plate 60, a second sliding clamping block 16 fixedly arranged on a side of the first sliding clamping block 35 close to the working chamber 18 for clamping metal plates, fixed grip block 60 is close to be equipped with the fixed clamp splice 63 that is used for the metal sheet centre gripping on one side of working chamber 18, the internal upside spout 28 of lateral wall, be equipped with downside spout 26 in the wall body of working chamber 18 downside, it is equipped with removal slider 14 to slide in working chamber 18, is located the 18 upside of working chamber slide grip block 35 set firmly in remove 14 downside of slider, it is equipped with and is used for driving the metal sheet to carry out the removal drive arrangement 902 that removes to remove 14 left side of slider, remove drive arrangement 902 including set up in upside spout 28 is left gear chamber 13 in the fuselage 10, gear chamber 13 rear side is equipped with band pulley chamber one 29, band pulley chamber one 29 with between the upside spout 28 be equipped with band pulley chamber two 43 in the fuselage 10, band pulley chamber one 29 with it is equipped with pivot one 64 to rotate between the gear chamber 13, gear chamber 13 with rotate between the upside spout 28 be equipped with remove 14 threaded engagement of slider and connect The upper side threaded rod 17, a guide sliding rod two 36 slidably mounted with the movable sliding block 14 is fixedly arranged on the left and right side wall bodies of the upper side sliding groove 28, a motor 37 is slidably arranged in the rear side wall body of the belt wheel cavity one 29, a rotating shaft sleeve 38 slidably mounted with the rotating shaft one 64 is fixedly arranged on a power output shaft of the motor 37, a sliding cavity one 66 is arranged in the front side wall body of the belt wheel cavity one 29, the rotating shaft sleeve 38 is slidably mounted in the sliding cavity one 66, an electromagnet one 65 is fixedly arranged on the front side of the rotating shaft sleeve 38, an electromagnet two 67 is fixedly arranged on the front side wall body of the sliding cavity one 66, when the electromagnet one 65 and the electromagnet two 67 are electrified, the rotating shaft sleeve 38 can be driven to slide towards the front side, the rotating shaft sleeve 38 is meshed and connected with the rotating shaft one 64, a clamping driving device 903 for driving clamping is arranged in the belt wheel cavity two 43, and grinding devices 904 for grinding metal plates are arranged on the front and rear sides of the working cavity 18, and a cleaning device 905 for cleaning the polished metal plate is arranged on the right side of the polishing device 904.

In addition, in an embodiment, the moving driving device 902 further includes a first bevel gear 12 fixedly disposed on the first rotating shaft 64 in the gear cavity 13, a second bevel gear 11 engaged with the first bevel gear 12 is fixedly disposed on the upper threaded rod 17 in the gear cavity 13, a lower sliding block 25 is slidably disposed in the lower sliding groove 26, the first sliding clamping block 35 located on the lower side of the working cavity 18 is fixedly mounted on the lower sliding block 25, and the first sliding clamping block 35 located on the upper side of the working cavity 18 is fixedly mounted on the moving sliding block 14.

In addition, in one embodiment, the clamping driving device 903 includes a second rotating shaft 42 rotatably disposed between the working chamber 18 and the first pulley chamber 29, a left rotating pulley 39 is spline-engaged with the second rotating shaft 38 in the first pulley chamber 29, an intermediate pulley 41 is fixedly disposed on the second rotating shaft 42 in the first pulley chamber 29, a first timing belt 40 is disposed between the intermediate pulley 41 and the left rotating pulley 39, when the rotating shaft sleeve 38 slides downward, the rotating shaft sleeve 38 is disengaged from the left rotating pulley 39, the rotating shaft sleeve 38 is engaged with the first rotating shaft 64, a second sliding chamber 57 is rotatably disposed between the second pulley chamber 43 and the working chamber 18, a first timing pulley 54 is fixedly disposed on the second sliding chamber 57 in the second pulley chamber 43, and a second timing belt 55 is disposed between the first timing pulley 54 and the second timing pulley 44, the sliding mechanism is characterized in that a first sliding rod 58 installed with a spline is arranged in the front side wall body of the second sliding cavity 57 in a sliding mode, a third electromagnet 56 is arranged between the first sliding rod 58 and the second sliding cavity 57, the third electromagnet 56 can drive the first sliding rod 58 to move back and forth, a third sliding cavity 51 is arranged in the front side wall body of the second rotating shaft 42, a second sliding rod 52 is arranged in the third sliding cavity 51 in a sliding mode, a fourth electromagnet 50 capable of driving the second sliding rod 52 to slide back and forth is arranged on the rear side of the second sliding rod 52, a spline cavity 53 is arranged in the front side wall body of the threaded rod 62, the second sliding rod 52 can slide into the upper side of the working cavity 18, the spline cavity 53 is arranged with the spline 62, and the first sliding rod 58 can slide into the lower side of the working cavity 18.

In addition, in one embodiment, the grinding device 904 includes a third shaft 46 rotatably disposed between the first pulley chamber 29 and the rear grinding chamber 49, a right belt wheel 45 is fixedly arranged on the rotating shaft III 46 in the belt wheel cavity I29, a synchronous belt III 30 is arranged between the right belt wheel 45 and the middle belt wheel 41, a rear side grinding box 47 which is in threaded engagement with the third rotating shaft 46 is arranged in the rear side grinding cavity 49, a third slide guiding rod 48 which is slidably arranged with the rear side grinding box 47 is fixedly arranged on the rear side wall body of the rear side grinding cavity 49, so that the rear side grinding box 47 can move forward and backward, the lower side of the rear side grinding box 47 is rotatably provided with a grinding wheel 21 capable of moving forward and backward, the lower side of the front side grinding box 33 in the front side grinding cavity 34 is provided with the fixed grinding wheel 21 for grinding, and the front side grinding box 33 is internally provided with the grinding wheel 21 driven by a driving motor.

In addition, in one embodiment, belt cleaning device 905 including the symmetry set up in upside spout 28 front and back side water tank 31 in the fuselage 10, the internal washing case 22 that has the symmetry that sets firmly of lateral wall before and after working chamber 18, wash case 22 be close to working chamber 18 lateral wall internal setting has can carry out abluent washing nozzle 23 to the metal sheet, wash case 22 with be equipped with water pipe 32 between the water tank 31, be equipped with the collection chamber 27 that is used for collecting the liquid after wasing in the working chamber 18 lower lateral wall body.

In the initial state, the spline rack on the outer side of the rotating shaft sleeve 38 is meshed with the spline rack on the inner side of the left rotating belt wheel 39, the spline rack on the inner side of the rotating shaft sleeve 38 is not meshed with the first rotating shaft 64, the first sliding rod 58 is not meshed with the spline cavity 53 on the lower side of the working cavity 18, and the second sliding rod 52 is not meshed with the spline cavity 53 on the upper side of the working cavity 18.

When the metal plate is clamped and fixed, firstly electrifying the electromagnet IV 50 and the electromagnet III 56, leading the sliding rod II 52 to slide forwards and be meshed and connected with the spline cavity 53 positioned at the upper side of the working cavity 18, leading the sliding rod I58 to slide forwards and be meshed and connected with the spline cavity 53 positioned at the lower side of the working cavity 18, then starting the motor 37, starting the motor 37 to drive the rotating shaft sleeve 38 to rotate, leading the rotating shaft sleeve 38 to rotate to drive the left rotating belt wheel 39 to rotate, leading the left rotating belt wheel 39 to rotate to drive the synchronous belt I40 to rotate, leading the synchronous belt I40 to rotate to drive the intermediate belt wheel 41 to rotate, leading the intermediate belt wheel 41 to rotate to drive the rotating shaft II 42 to rotate, leading the rotating shaft II 42 to rotate to drive the sliding rod II 52 to rotate, simultaneously leading the rotating shaft II 42 to rotate to drive the synchronous belt wheel II 44 to rotate, leading the synchronous belt wheel II 44 to rotate to drive the synchronous belt II 55, the second sliding cavity 57 rotates to drive the first sliding rod 58 to rotate, so as to drive the threaded rod 62 to rotate, the threaded rod 62 rotates to drive the first sliding clamping block 35 to move downwards or backwards, and when the first sliding clamping block 35 moves forwards, the first sliding clamping block cooperates with the fixed clamping plate 60 to clamp and fix the metal plate.

When the metal plate is moved and polished, firstly, the middle belt wheel 41 rotates to drive the synchronous belt three 30 to rotate, the synchronous belt three 30 rotates to drive the right belt wheel 45 to rotate, the right belt wheel 45 rotates to drive the rotating shaft three 46 to rotate, the rotating shaft three 46 rotates to drive the guide slide bar three 48 to move forwards to adjust the position of the polishing wheel 21 positioned at the rear side of the working cavity 18, so that the polishing device can adjust the polishing distance according to the thickness of the metal plate, then, the electromagnet one 65 and the electromagnet two 67 are electrified, the rotating shaft sleeve 38 moves downwards, so that the spline gear inside the rotating shaft sleeve 38 is meshed with the rotating shaft one 64, the rotating shaft sleeve 38 is disengaged from the rotating shaft one 64, then, the motor 37 is started, the motor 37 rotates to drive the rotating shaft sleeve 38 to rotate, the rotating shaft sleeve 38 rotates to drive the rotating shaft one 64 to rotate, the rotating shaft one 64 rotates to drive the bevel gear one 12 to rotate, the bevel gear II 11 rotates to drive the upper threaded rod 17 to rotate, the upper threaded rod 17 rotates to drive the movable sliding block 14 to move rightwards, so that the metal plate is driven to move rightwards, the driving motor drives the grinding wheel 21 to rotate, and the front and rear side wall bodies of the moved metal plate are ground in a rotating mode; when the polished metal plate is cleaned, the water tank 31 is started, cleaning liquid flowing out of the water tank 31 enters the cleaning tank 22 through the water pipe 32, then the metal plate is cleaned by spraying the cleaning spray bar 23, and the cleaning liquid flows out of the collecting cavity 27 after cleaning and is collected.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and scope of the present invention are intended to be included therein.

Claims

1. The utility model provides a cleaning equipment polishes for sheet metal, includes the fuselage, its characterized in that: the working chamber in the machine body, the upper side and the lower side of the working chamber are provided with symmetrical clamping devices for clamping a metal plate, each metal clamping device comprises a fixed plate which is symmetrically arranged on the upper side and the lower side of the working chamber and used for clamping and fixing the metal plate, the front side of the fixed plate is provided with a fixed clamping plate, a first guide sliding rod is fixedly arranged between the fixed clamping plate and the fixed plate, the rear side of the fixed clamping plate and the fixed plate are rotatably provided with a threaded rod, a first sliding clamping block which is slidably arranged with the first guide sliding rod is arranged on the fixed clamping plate in a threaded manner, a second sliding clamping block which is close to one side of the working chamber and used for clamping the metal plate is fixedly arranged on one side of the fixed clamping plate, a sliding chute is arranged on the inner upper side of the side wall body, and a sliding chute is arranged on the lower side of the working chamber, a movable sliding block is arranged in the working cavity in a sliding manner, a first sliding clamping block positioned on the upper side of the working cavity is fixedly arranged on the lower side of the movable sliding block, a movable driving device used for driving a metal plate to move is arranged on the left side of the movable sliding block, the movable driving device comprises a gear cavity arranged in the machine body on the left side of the upper sliding groove, a first belt wheel cavity is arranged on the rear side of the gear cavity, a second belt wheel cavity is arranged in the machine body between the first belt wheel cavity and the upper sliding groove, a first rotating shaft is rotatably arranged between the first belt wheel cavity and the gear cavity, an upper threaded rod in threaded engagement connection with the movable sliding block is rotatably arranged between the gear cavity and the upper sliding groove, a second guide slide bar in sliding installation with the movable sliding block is fixedly arranged on the left side wall body and the right side wall body of the upper sliding groove, a motor is slidably arranged in the rear side wall body of the first belt wheel cavity, and, the belt wheel type metal plate polishing device is characterized in that a first sliding cavity is formed in the front side wall body of the first belt wheel cavity, a rotating shaft sleeve is slidably mounted in the first sliding cavity, a first electromagnet is fixedly arranged on the front side wall body of the first sliding cavity, a second electromagnet is fixedly arranged on the front side wall body of the first sliding cavity, the first electromagnet and the second electromagnet can drive the rotating shaft sleeve to slide towards the front side when being electrified, the rotating shaft sleeve is connected with a rotating shaft spline in a meshed mode, a clamping driving device used for driving clamping is arranged in the second belt wheel cavity, a polishing device used for polishing a metal plate is arranged on the right side of a moving sliding block and on the front side and the rear side of a working cavity, and a cleaning device used for.

2. A sanding cleaning device for metal sheets as claimed in claim 1, characterised in that: the mobile driving device further comprises a first bevel gear fixedly arranged in the gear cavity and arranged on the first rotating shaft, a second bevel gear fixedly connected with the first bevel gear in a meshed mode is fixedly arranged on the upper side threaded rod in the gear cavity, a lower side sliding block is arranged in the lower side sliding groove in a sliding mode and located on the lower side of the working cavity, a first sliding clamping block is fixedly installed on the lower side sliding block, and a first sliding clamping block is fixedly installed on the upper side of the working cavity and fixedly installed on the mobile sliding block.

3. A sanding cleaning device for metal sheets as claimed in claim 1, characterised in that: the clamping driving device comprises a rotating shaft II which is rotatably arranged between the working cavity and the belt wheel cavity I, the rotating shaft sleeve in the belt wheel cavity I is connected with a left rotating belt wheel in a spline meshing manner, a middle belt wheel is fixedly arranged on the rotating shaft II in the belt wheel cavity I, a synchronous belt I is arranged between the middle belt wheel and the left rotating belt wheel, when the rotating shaft sleeve slides downwards, the rotating shaft sleeve is disengaged from the left rotating belt wheel and is connected with the rotating shaft I in a meshing manner, a sliding cavity II is rotatably arranged between the belt wheel cavity II and the working cavity, a synchronous belt wheel I is fixedly arranged on the sliding cavity II in the belt wheel cavity II, a synchronous belt II is arranged between the synchronous belt wheel I and the synchronous belt wheel II, a sliding rod I installed with a spline is arranged in the front side wall body of the sliding cavity II in a sliding manner, and an electromagnet III is arranged between the sliding rod I and the rear side and the sliding cavity II, the three electromagnets can drive the first slide bar to move back and forth, the three sliding cavities are formed in the two front side wall bodies of the rotating shaft, the two slide bars are arranged in the three sliding cavities in a sliding mode, the four electromagnets which can drive the two slide bars to slide back and forth are arranged on the rear sides of the two slide bars, spline cavities are formed in the two front side wall bodies of the threaded rod, the two slide bars can slide into the positions on the upper side of the working cavity, the spline cavities are internally provided with the threaded rod splines, and the one slide bars can slide into the positions on the lower side of the working cavity, the spline cavities are internally provided with.

4. A sanding cleaning device for metal sheets as claimed in claim 1, characterised in that: the grinding device comprises a third rotating shaft which is rotatably arranged between a first belt wheel cavity and a rear grinding cavity, a right belt wheel is fixedly arranged on the third rotating shaft in the first belt wheel cavity, a third synchronous belt is arranged between the right belt wheel and a middle belt wheel, a rear grinding box which is in threaded engagement with the three rotating shafts is arranged in the rear grinding cavity, a third guide slide bar which is in sliding installation with the rear grinding box is fixedly arranged on the rear wall body of the rear grinding cavity, so that the rear grinding box can move back and forth, a grinding wheel which can move back and forth is arranged on the lower side of the rear grinding box in a rotating mode, and a fixed grinding wheel which is used for grinding is arranged on the lower side of the front grinding box in the front grinding cavity.

5. A sanding cleaning device for metal sheets as claimed in claim 1, characterised in that: the belt cleaning device including the symmetry set up in side around the upside spout water tank in the fuselage, the internal washing case that has set firmly the symmetry of lateral wall around the working chamber, it is close to wash the case a lateral wall body internal setting has can carry out abluent washing to the metal sheet and spouts the strip, wash the case with be equipped with the water pipe between the water tank, be equipped with the collection chamber that is used for collecting the liquid after wasing in the working chamber lateral wall body.