CN108214304A

CN108214304A - The grinding device that a kind of sanding block is vertically movable

Info

Publication number: CN108214304A
Application number: CN201810016235.8A
Authority: CN
Inventors: 曹婉丽; 刘祖仑; 火元辰
Original assignee: Individual
Current assignee: Jieyang Hesheng Machinery Stone Co Ltd
Priority date: 2018-01-08
Filing date: 2018-01-08
Publication date: 2018-06-29
Anticipated expiration: 2038-01-08
Also published as: CN108214304B

Abstract

The invention discloses the grinding devices that a kind of sanding block is vertically movable, including housing, the upper surface of the inner walls is fixedly connected with the fuselage of the first motor, the surface of first motor output shaft is fixedly connected with first gear, the first gear is engaged with second gear, the second gear is fixedly connected on the surface of thread barrel, and the position that the thread barrel surface is located above second gear is fixedly connected with clutch shaft bearing.The grinding device that the sanding block is vertically movable, pass through the first motor, thread barrel, threaded post, the second motor, sanding block, placement plate, telescopic device, third motor, cam and collection box, it is adjusted so as to the height to sanding block, so as to so that the people of different heights more easily polishes to workpiece, the polishing speed to workpiece can be improved, more easily scrap can be cleared up using collection box simultaneously, thereby may be ensured that the polishing effect to workpiece.

Description

The grinding device that a kind of sanding block is vertically movable

Technical field

The present invention relates to grinding technique field, grinding device that specially a kind of sanding block is vertically movable.

Background technology

Polishing operation is the more commonly used process means of no machining, and existing last one of the technique of work pieces process is also equal It is sanding and polishing, technique for grinding can obtain relatively good smooth surface；Existing technique for grinding is according to product size and type Difference can be divided into manual grinding and machine polishing, good pincers worker can polish than machine also than good shiny surface, still Manual grinding operating efficiency is low, it is impossible to meet the needs of industrial mass；With the development of science and technology, more grinding apparatus It is developed, but is not easy to adjust on most grinding apparatus vertical direction in the market, and lack abrasive dust remove device, beat After grinding operation, the removing that purging process completes abrasive dust is usually relied on, is not easy to the promotion of working efficiency, and the abrasive dust purged also can Undesirable influence is brought on factory work environment.

Invention content

(1) the technical issues of solving

In view of the deficiencies of the prior art, it the present invention provides the grinding device that a kind of sanding block is vertically movable, solves Grinding device currently on the market adjust vertically it is dumb, abrasive dust be not easy to cleaning the problem of.

(2) technical solution

To achieve the above object, the present invention provides following technical solution：The grinding device that a kind of sanding block is vertically movable, Including housing, the upper surface of the inner walls is fixedly connected with the fuselage of the first motor, the table of first motor output shaft Face is fixedly connected with first gear, and the first gear is engaged with second gear, and the second gear is fixedly connected on thread barrel Surface, the position that the thread barrel surface is located above second gear is fixedly connected with clutch shaft bearing, the clutch shaft bearing Two sides are fixedly connected by two the first fixed blocks with the upper surface of inner walls, and the thread barrel internal thread is connected with screw thread Column, the bottom end of the threaded post are fixedly connected with the upper surface of support plate, the two sides of the support plate and the phase of two sliding blocks Opposite is fixedly connected, and two sliding blocks are slidably connected at respectively in two sliding slots that inner walls two sides open up, the support The upper surface of plate is fixedly connected by two the second fixed blocks with the fuselage of the second motor, the output shaft of second motor and The top of one shaft is fixedly connected, and the surface of the first rotating shaft is socketed with second bearing, and the second bearing is connected to support The upper surface of plate, the second bearing are located at the left side of threaded post, and the surface of the first rotating shaft is fixedly connected with driving wheel, institute Driving wheel to be stated to be sequentially connected by belt and driven wheel, the driven wheel is fixedly connected on the surface of the second shaft, and described second The surface of shaft is socketed with 3rd bearing, and the 3rd bearing is connected to the lower surface of support plate, and the bottom end of the shaft is with beating The upper surface of abrading block is fixedly connected.

Placement plate is provided in the housing, the upper surface of the placement plate offers several through-holes, the placement plate Lower surface be fixedly connected by upper surface of four telescopic devices respectively with two supporting blocks, and four telescopic devices difference positions In placement plate lower surface close to the position of quadrangle, the front of the inner walls is fixedly connected with the one end at the supporting rod back side, institute The upper surface for stating supporting rod is fixedly connected with the fuselage of third motor, and the surface of the third motor output shaft is fixedly connected with convex Wheel, is provided with collection box in the housing, the lower surface of the collection box by two third fixed blocks respectively with two sliding sleeves Upper surface be fixedly connected and slide bar be both provided in two sliding sleeves, the both ends of the slide bar are opposite with two link blocks respectively Face is fixedly connected, and the lower surface of two link blocks is fixedly connected with the lower surface of inner walls, the following table of the collection box Face and the upper surface of two idler wheels overlap, and the lower surface of two idler wheels is fixedly connected with the lower surface of inner walls, and two A idler wheel is symmetricly set on the left and right sides of two slide bars, and two idler wheels are respectively positioned on inner walls lower surface close to housing front Position.

Preferably, the lower surface of the collection box offers material taking mouth, and the collection box lower surface corresponds to the position of material taking mouth It installs and is equipped with baffle.

Preferably, the lower surface of the housing is provided with supporting leg, and the quantity of the supporting leg is four, and four supports Leg is located at housing lower surface close to the position of quadrangle respectively.

Preferably, the left and right sides of the inner walls are both provided with limited block, and two limited blocks are respectively positioned on support Position between plate and placement plate.

Preferably, the upper surface of the inner walls is provided with accumulator, and the accumulator is located at the right side of the first motor.

Preferably, the left side of the housing is provided with control panel, the input terminal of the control panel and accumulator Output terminal is electrically connected, and the output terminal of the control panel is electric with the input terminal of the first motor, the second motor and third motor respectively Connection.

Preferably, the telescopic device includes telescopic rod and spring, and the spring is socketed in the surface of telescopic rod, described to stretch Opposite face of the both ends of contracting bar and spring respectively with placement plate and supporting block is fixedly connected.

Preferably, the shape of the sliding block is T-shaped, and the shape of the sliding slot is T-shaped.

(3) advantageous effect

The present invention provides the grinding devices that a kind of sanding block is vertically movable, and have following advantageous effect：

(1), the grinding device that the sanding block is vertically movable, by the first motor, thread barrel, threaded post, the second motor, Sanding block, placement plate, telescopic device, third motor, cam and collection box, the work of the first motor of control rotate thread barrel, Threaded post can move in thread barrel, the rotation direction of the first motor output shaft be controlled, so as to control the upper of threaded post Lower movement, the output shaft of the second motor can rotate sanding block, and third motor can make cam intermittent with putting when working Plate contact is put, so as to can preferably be shaken with telescopic device cooperation to placement plate, while collection box can be made from housing It moves, so as to more easily clear up scrap, is adjusted so as to the height to sanding block from inside to outside, so as to The people of different heights can be made more easily to polish workpiece, the polishing speed to workpiece can be improved, while can profit More easily scrap can be cleared up with collection box, thereby may be ensured that the polishing effect to workpiece.

(2), the grinding device that the sanding block is vertically movable, can using sliding block by setting sliding block, slide bar and limited block So as to more stablize when support plate moves up and down, slide bar can be supported sliding sleeve, so as to preferably to receiving Collection box is supported, while it is more convenient to move collection box, and support plate can be prevented to moving down using limited block Threaded post detaches, and which has a compact structure and a reasonable design of the present invention with thread barrel when dynamic, highly practical.

Description of the drawings

Fig. 1 is the cross-sectional view that the present invention faces；

Fig. 2 is the cross-sectional view that sliding slot of the present invention is overlooked.

In figure：1 housing, 2 first motors, 3 first gears, 4 second gears, 5 thread barrels, 6 clutch shaft bearings, 7 first are fixed Block, 8 threaded posts, 9 support plates, 10 sliding blocks, 11 sliding slots, 12 second fixed blocks, 13 second motors, 14 first rotating shafts, 15 second axis Hold, 16 driving wheels, 17 belts, 18 driven wheels, 19 second shafts, 20 3rd bearings, 21 sanding blocks, 22 placement plates, 23 through-holes, 24 Telescopic device, 241 telescopic rods, 242 springs, 25 supporting blocks, 26 supporting rods, 27 third motors, 28 cams, 29 collection boxes, 30 Three fixed blocks, 31 sliding sleeves, 32 slide bars, 33 link blocks, 34 idler wheels, 35 material taking mouths, 36 baffles, 37 supporting legs, 38 limited blocks, 39 store Battery, 40 control panels.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work Embodiment shall fall within the protection scope of the present invention.

As shown in Figs. 1-2, the present invention provides a kind of technical solution：The grinding device that a kind of sanding block is vertically movable, packet Housing 1 is included, the upper surface of 1 inner wall of housing is fixedly connected with the fuselage of the first motor 2, and the surface of 2 output shaft of the first motor is fixed First gear 3 is connected with, by setting the first motor 2, the output shaft of the first motor 2 can make the second tooth by first gear 3 4 rotation of wheel, so as to which second gear 4 can drive thread barrel 5 to be rotated, first gear 3 is engaged with second gear 4, the second tooth Wheel 4 is fixedly connected on the surface of thread barrel 5, and the position that 5 surface of thread barrel is located at 4 top of second gear is fixedly connected with first axle 6 are held, by setting clutch shaft bearing 6, thread barrel 5 can be fixed, while thread barrel 5 can be made more easily to be turned Dynamic, the two sides of clutch shaft bearing 6 are fixedly connected by two the first fixed blocks 7 with the upper surface of 1 inner wall of housing, in thread barrel 5 Threaded post 8 is threaded with, by being threaded cylinder 5 and threaded post 8, threaded post 8 can be made when thread barrel 5 rotates in screw thread It is moved in cylinder 5, controls the rotation direction of the output shaft of the first motor 2, the rotation direction of thread barrel 5 can be controlled, so as to Moving up and down for threaded post 8 can be controlled, the bottom end of threaded post 8 is fixedly connected with the upper surface of support plate 9, and the two of support plate 9 Side is fixedly connected with the opposite face of two sliding blocks 10, by setting support plate 9, can to the second motor 13 and sanding block 21 into Row support, while support plate 9 can be driven to move up and down when threaded post 8 moves up and down, so as to the height to sanding block 21 Degree is adjusted, and two sliding blocks 10 are slidably connected at respectively in two sliding slots 11 that 1 inner wall two sides of housing open up, sliding block 10 Shape to be T-shaped, the shape of sliding slot 11 is T-shaped, and by setting sliding block 10 and sliding slot 11, supporting block 25 can be consolidated It is fixed, support plate 9 can be made more easily to move up and down, the upper surface of support plate 9 passes through two the second fixed blocks 12 and the second electricity The fuselage of machine 13 is fixedly connected, and the output shaft of the second motor 13 is fixedly connected with the top of first rotating shaft 14, passes through setting second Motor 13, the output shaft of the second motor 13 can be rotated driving wheel 16 by first rotating shaft 14, the table of first rotating shaft 14 Surface cover is connected to second bearing 15, and second bearing 15 is connected to the upper surface of support plate 9, and second bearing 15 is located at a left side for threaded post 8 Side, the surface of first rotating shaft 14 are fixedly connected with driving wheel 16, and driving wheel 16 is sequentially connected by belt 17 and driven wheel 18, from Driving wheel 18 is fixedly connected on the surface of the second shaft 19, by setting driving wheel 16 and driven wheel 18, when driving wheel 16 passes through skin Band 17 can drive driven wheel 18 to rotate, and driven wheel 18 can be rotated sanding block 21 by the second shaft 19, second turn The surface of axis 19 is socketed with 3rd bearing 20, and 3rd bearing 20 is connected to the lower surface of support plate 9, the bottom end of shaft and sanding block 21 upper surface is fixedly connected, can be better when the drive rotation of sanding block 21 of the second shaft 19 by setting sanding block 21 It polishes workpiece.

Placement plate 22 is provided in housing 1, by setting placement plate 22, workpiece can be placed, worker can be made It more easily polishes workpiece, the left and right sides of 1 inner wall of housing are both provided with limited block 38, and two limited blocks 38 are equal Position between support plate 9 and placement plate 22, by setting limited block 38, when can prevent from moving down under support plate 9 Threaded post 8 is detached with thread barrel 5, and the upper surface of placement plate 22 offers several through-holes 23, by setting through-hole 23, using logical Hole 23 can be such that the scrap in placement plate 22 preferably falls into collection box 29, and the lower surface of placement plate 22 passes through four flexible dresses It puts 24 upper surface respectively with two supporting blocks 25 to be fixedly connected, and four telescopic devices 24 are located at 22 lower surface of placement plate respectively Close to the position of quadrangle, telescopic device 24 includes telescopic rod 241 and spring 242, by setting telescopic rod 241 and spring 242, stretches Placement plate 22 and spring 242 can be fixed in contracting bar 241, using the elastic reaction of spring 242, when cam 28 is from third electricity Placement plate 22 rises to highest position when the farthest one end of 27 output shaft of machine is contacted with placement plate 22, when cam 28 is from third electricity The shortening of spring 242 moves down placement plate 22 when the farthest one end of 27 output shaft of machine is detached with placement plate 22, and spring 242 is socketed On the surface of telescopic rod 241, the opposite face of the both ends of telescopic rod 241 and spring 242 respectively with placement plate 22 and supporting block 25 is consolidated Fixed connection, the front of 1 inner wall of housing are fixedly connected with the one end at 26 back side of supporting rod, upper surface and the third motor of supporting rod 26 27 fuselage is fixedly connected, and the surface of 27 output shaft of third motor is fixedly connected with cam 28, by setting third motor 27, the Three motors 27 can make being contacted with placement plate 22 for 28 interval of cam when working, and intermittent can push up placement plate 22 upwards It rises, collection box 29 is provided in housing 1, the lower surface of collection box 29 offers material taking mouth 35, and 29 lower surface of collection box corresponds to and takes The position of material mouth 35 is provided with baffle 36, can be preferably to feeding using baffle 36 by setting material taking mouth 35 and baffle 36 Mouth 35 is closed, and more easily collection box 29 can be collected using material taking mouth 35, the lower surface of collection box 29 passes through Two third fixed blocks 30 are fixedly connected with the upper surface of two sliding sleeves 31 and are both provided with slide bar 32 in two sliding sleeves 31 respectively, Opposite face of the both ends of slide bar 32 respectively with two link blocks 33 is fixedly connected, by setting slide bar 32 and sliding sleeve 31, slide bar 32 Sliding sleeve 31 can be supported, so as to be preferably supported to collection box 29, while can move collection box 29 It is more convenient, and lower surface of the lower surface of two link blocks 33 with 1 inner wall of housing is fixedly connected, the following table of collection box 29 Face and the upper surface of two idler wheels 34 overlap, and lower surface of the lower surface of two idler wheels 34 with 1 inner wall of housing is fixedly connected, And two idler wheels 34 are symmetricly set on the left and right sides of two slide bars 32, and two idler wheels 34 are respectively positioned on 1 interior lower surface of housing Close to 1 positive position of housing, by setting idler wheel 34, the frictional force of sliding sleeve 31 and slide bar 32 can be reduced, can be more convenient Collection box 29 is moved, the lower surface of housing 1 is provided with supporting leg 37, and the quantity of supporting leg 37 is four, and four Supporting leg 37 is located at 1 lower surface of housing close to the position of quadrangle respectively, and by setting supporting leg 37, housing 1 can be propped up Support, can more easily polish to workpiece, and the upper surface of 1 inner wall of housing is provided with accumulator 39, and accumulator 39 is located at the The right side of one motor 2, the left side of housing 1 is provided with control panel 40, by setting accumulator 39, can more easily make One motor 2, the second motor 13 and 27 electricity consumption of third motor work, the input terminal of control panel 40 and the output of accumulator 39 End electrical connection, the input terminal of the output terminal of control panel 40 respectively with the first motor 2, the second motor 13 and third motor 27 are electrically connected It connects, by setting control panel 40, can preferably control the work of the first motor 2, the second motor 13 and third motor 27, it can More easily the height of sanding block 21 to be adjusted, while more easily the scrap in placement plate 22 can be carried out clear Reason.

Operation principle：When needing to be adjusted the height of sanding block 21, the first motor 2 is controlled by control panel 40 Work makes the output shaft of the first motor 2 pass through first gear 3 to drive the rotation of second gear 4 positive direction, so as to make thread barrel 5 the It is rotated in one bearing 6, so as to which so that threaded post 8 moves down in thread barrel 5, the output shaft for controlling the first motor 2 is reversed Rotation so as to which threaded post 8 is controlled to be moved up in thread barrel 5, passes through after being adjusted to the height of sanding block 21 Control panel 40 controls the first motor 2 to be stopped, and controls second by control panel 40 when needing to polish to workpiece Motor 13 works, and the output shaft of the second motor 13 drives driving wheel 16 to rotate by first rotating shaft 14, so as to which driving wheel 16 passes through Belt 17 can rotate driven wheel 18, so as to which driven wheel 18 can drive sanding block 21 to be rotated by the second shaft 19, The second motor 13 is controlled to be stopped by control panel 40 after to grinding workpieces, when needing to useless in placement plate 22 When bits are cleared up, third motor 27 is controlled to work by control panel 40, output shaft 28 turns of the moving cam of band of third motor 27 It is dynamic, when the one end farthest from 27 output shaft of third motor of cam 28 is contacted with placement plate 22 can gradually by placement plate 22 upwards It jacks up, so as to which placement plate 22 can drive telescopic device 24 to extend, when the one end farthest from 27 output shaft of third motor of cam 28 When gradually being detached with placement plate 22, telescopic device 24, which shortens, drives placement plate 22 to move down, so as to pass through one end of cam 28 It can make 22 vertical tremor of placement plate with the intermittent contact of placement plate 22, so as to so that the scrap in placement plate 22 is passed through and led to Hole 23 is dropped into collection box 29, and passing through control panel 40 after to the cleaning of placement plate 22 well controls third motor 27 to stop work Make, when needing to be collected the scrap in collection box 29, pull collection box 29 that third fixed block 30 is made to drive sliding sleeve 31 in cunning The surface forward slip of bar 32, to a certain degree when stop drag collection box 29, then can open baffle 36 makes in collection box 29 Scrap can be leaked out from material taking mouth 35, closed after being cleaned out to collection box 29 and baffle 36 and collection box 29 pushed to make collection Box 29 is moved into housing 1.

Can to sum up obtain, the grinding device which is vertically movable, by the first motor 2, thread barrel 5, threaded post 8, Second motor 13, sanding block 21, placement plate 22, telescopic device 24, third motor 27, cam 28 and collection box 29, control first The work of motor 2 rotates thread barrel 5, and threaded post 8 can move in thread barrel 5, controls the rotation of 2 output shaft of the first motor Direction, so as to control moving up and down for threaded post 8, the output shaft of the second motor 13 can rotate sanding block 21, third Motor 27 can make cam 28 is intermittent to be contacted with placement plate 22 when working, can be better so as to coordinate with telescopic device 24 Placement plate 22 is shaken, while collection box 29 can be made to be moved from inside to outside from housing 1, so as to more easily to scrap Cleared up, be adjusted so as to the height to sanding block 21, so as to so that the people of different height more easily to work Part is polished, and can improve the polishing speed to workpiece, at the same can utilize collection box 29 can more easily to scrap into Row cleaning, thereby may be ensured that the polishing effect to workpiece.

Meanwhile the grinding device that the sanding block is vertically movable, by setting sliding block 10, slide bar 32 and limited block 38, profit Support plate 9 can be made more to stablize when moving up and down with sliding block 10, slide bar 32 can be supported sliding sleeve 31, so as to Preferably collection box 29 can be supported, while it is more convenient to move collection box 29, it can using limited block 38 It is practical to prevent the threaded post 8 when moving down of support plate 9 from being detached with thread barrel 5, and which has a compact structure and a reasonable design of the present invention Property is strong.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is defined by the appended.

Claims

1. a kind of grinding device that sanding block is vertically movable, including housing (1), it is characterised in that：Housing (1) inner wall Upper surface is fixedly connected with the fuselage of the first motor (2), and the surface of the first motor (2) output shaft is fixedly connected with the first tooth It takes turns (3), the first gear (3) is engaged with second gear (4), and the second gear (4) is fixedly connected on the table of thread barrel (5) Face, the position that thread barrel (5) surface is located above second gear (4) are fixedly connected with clutch shaft bearing (6), the first axle The two sides for holding (6) are fixedly connected by two the first fixed blocks (7) with the upper surface of housing (1) inner wall, the thread barrel (5) Internal thread is connected with threaded post (8), and the bottom end of the threaded post (8) is fixedly connected with the upper surface of support plate (9), the support The two sides of plate (9) are fixedly connected with the opposite face of two sliding blocks (10), and two sliding blocks (10) are slidably connected at housing respectively (1) in two sliding slots (11) that inner wall two sides open up, the upper surface of the support plate (9) passes through two the second fixed blocks (12) It is fixedly connected with the fuselage of the second motor (13), the output shaft of second motor (13) and the top of first rotating shaft (14) are fixed Connection, the surface of the first rotating shaft (14) are socketed with second bearing (15), and the second bearing (15) is connected to support plate (9) Upper surface, the second bearing (15) is fixedly connected with positioned at the left side of threaded post (8), the surface of the first rotating shaft (14) Driving wheel (16), the driving wheel (16) are sequentially connected by belt (17) and driven wheel (18), and the driven wheel (18) is fixed The surface of the second shaft (19) is connected to, the surface of second shaft (19) is socketed with 3rd bearing (20), the third axis The lower surface that (20) are connected to support plate (9) is held, the bottom end of the shaft is fixedly connected with the upper surface of sanding block (21)；

Placement plate (22) is provided in the housing (1), the upper surface of the placement plate (22) offers several through-holes (23), The lower surface of the placement plate (22) is fixed by four telescopic devices (24) with the upper surface of two supporting blocks (25) respectively to be connected It connects, and four telescopic devices (24) are located at placement plate (22) lower surface close to the position of quadrangle respectively, housing (1) inner wall Front is fixedly connected with the one end at supporting rod (26) back side, the upper surface of the supporting rod (26) and the fuselage of third motor (27) It is fixedly connected, the surface of third motor (27) output shaft is fixedly connected with cam (28), and receipts are provided in the housing (1) Collect box (29), the lower surface of the collection box (29) passes through two third fixed blocks (30) upper table with two sliding sleeves (31) respectively Face is fixedly connected and slide bar (32) is both provided in two sliding sleeves (31), the both ends of the slide bar (32) respectively with two link blocks (33) opposite face is fixedly connected, and lower surface of the lower surface of two link blocks (33) with housing (1) inner wall is fixedly connected, The lower surface of the collection box (29) and the upper surface of two idler wheels (34) overlap, and the lower surface of two idler wheels (34) is and shell The lower surface of body (1) inner wall is fixedly connected, and two idler wheels (34) are symmetricly set on the left and right sides of two slide bars (32), and two A idler wheel (34) is respectively positioned on housing (1) interior lower surface close to housing (1) positive position；

The upper surface of housing (1) inner wall is provided with accumulator (39), and the accumulator (39) is positioned at the right side of the first motor (2) Side；The left side of the housing (1) is provided with control panel (40), input terminal and the accumulator (39) of the control panel (40) Output terminal electrical connection, the output terminal of the control panel (40) is electric with the first motor (2), the second motor (13) and third respectively The input terminal electrical connection of machine (27).

2. the grinding device that a kind of sanding block according to claim 1 is vertically movable, it is characterised in that：The collection box (29) lower surface offers material taking mouth (35), and the position that collection box (29) lower surface corresponds to material taking mouth (35) is provided with gear Plate (36).

3. the grinding device that a kind of sanding block according to claim 1 is vertically movable, it is characterised in that：The housing (1) lower surface is provided with supporting leg (37), and the quantity of the supporting leg (37) is four, and four supporting legs (37) difference positions In housing (1) lower surface close to the position of quadrangle.

4. the grinding device that a kind of sanding block according to claim 1 is vertically movable, it is characterised in that：The housing (1) left and right sides of inner wall are both provided with limited block (38), and two limited blocks (38) are respectively positioned on support plate (9) and placement plate (22) position between.

5. the grinding device that a kind of sanding block according to claim 1 is vertically movable, it is characterised in that：The flexible dress It puts (24) and includes telescopic rod (241) and spring (242), the spring (242) is socketed in the surface of telescopic rod (241), described to stretch Opposite face of the both ends of contracting bar (241) and spring (242) respectively with placement plate (22) and supporting block (25) is fixedly connected.

6. the grinding device that a kind of sanding block according to claim 1 is vertically movable, it is characterised in that：The sliding block (10) shape is T-shaped, and the shape of the sliding slot (11) is T-shaped.