CN214723660U

CN214723660U - Measuring and positioning scratch-proof device

Info

Publication number: CN214723660U
Application number: CN202120998593.0U
Authority: CN
Inventors: 张林明
Original assignee: Dawei Huizhou Technology Co ltd
Current assignee: Dawei Huizhou Technology Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-16
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a measuring location prevents fish tail device, including first scale plate, the device mainboard, first gasket, first spring, the side cap, first tight post of clamp, first connecting rod, first slider, first closing cap, the second gasket, first gear, the second connecting rod, the rubber pad, press from both sides tight slide bar, the second spring, the second gear, the third spring, the second slider, the second closing cap, L type piece, the fixture block, the reset key, third connecting rod and second scale plate, the utility model discloses a through the contact of first gasket, the second gasket, third gasket and rubber pad and work piece, prevent that the work piece from being the fish tail, thereby drive third gear, the second gear, second connecting rod and first gear through the twist grip and drive the tight piece of clamp and press from both sides tightly the work piece, be favorable to pressing from both sides tightly the work piece, fixed first scale plate and second scale plate are favorable to measuring the work piece, drive first slider through the effect of first spring, the device mainboard, The first connecting rod, the first clamping column and the first sealing cover fix the gasket, and replacement of the gasket is facilitated.

Description

Measuring and positioning scratch-proof device

Technical Field

The utility model relates to a measuring and positioning prevents fish tail technical field, specifically is a measuring and positioning prevents fish tail device.

Background

Along with the continuous progress of production, the processing requirement on the workpiece is higher and higher, so the measurement positioning treatment is carried out on the workpiece in the actual production, so that the quality of the workpiece is inspected, in the measurement positioning process, the scratch is easily generated on the surface of the workpiece due to the movement of the workpiece, the qualified rate of the workpiece is reduced, meanwhile, the gasket arranged in the measurement positioning process is easy to wear after long-time use and needs to be replaced, but the gasket is bonded by the adhesive when being arranged, so that the gasket is not easy to detach, and the replacement difficulty in the later period is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a measure location and prevent fish tail device to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a measuring and positioning scratch-proof device comprises a first scale plate, a device main plate, a first gasket, a first spring, a side cover, a first clamping column, a first connecting rod, a first sliding block, a first sealing cover, a second gasket, a through groove, a first gear, a second connecting rod, a sliding groove, a rubber pad, a clamping sliding rod, a second spring, a second gear, a connecting rod, a handle, a third gear, a second clamping column, a pointer, a third spring, a second sliding block, a second sealing cover, a clamping block, an L-shaped block, a fourth spring, a bayonet groove, a clamping block, a reset key, a connecting column, a fifth spring, a third connecting rod, a handle, a second scale plate, a third gasket, a first cavity, a second cavity and a rack, wherein one side of the top of the device main plate is fixedly connected with the second scale plate through screws, one side of the device main plate is uniformly provided with the first cavity, and one side of the device main plate is provided with through holes, the through hole penetrates through the center of the first cavity, the first clamping column slides in the through hole, one end of the first clamping column is positioned outside one side of the device main board, the other end of the first clamping column penetrates through the through hole formed in one side of the device main board and is connected with one end of a first sealing cover through threads, the first sealing cover is positioned in a groove uniformly formed in one side of a first gasket, the other side of the first gasket is tightly attached to the device main board, two sides of the center of the first clamping column are respectively hinged with one end of a first connecting rod, the other end of the first connecting rod is respectively hinged with one end of a first sliding block, the other end of the first sliding block is provided with a groove, the groove is fixedly connected with one end of a first spring, two sides of the first cavity are provided with cylindrical grooves, the first sliding block slides in the cylindrical grooves, and the other end of the first spring is fixedly connected with the cylindrical grooves formed in two sides of the first cavity, the side of the device main board adjacent to the first gasket is fixedly connected with the second gasket, a through groove is formed in the side of the device main board adjacent to the first gasket, an L-shaped block is placed in the through groove, a sliding groove is formed in the lower portion of the L-shaped block, one end of a clamping block is positioned in the sliding groove and slides, a bayonet groove is formed in one side of the center of the side face of the L-shaped block, a clamping block is positioned in the bayonet groove, one end, close to the L-shaped block, of the clamping block is fixedly connected with one end of a fifth spring, a cavity is formed in the joint of the device main board and the bayonet groove, the other end of the fifth spring is fixedly connected with the groove formed in the cavity, a connecting column is rotatably connected in the cavity through a bearing, the center of the connecting column is fixedly sleeved with a through hole formed in one end of the center of the clamping block, the other end of the clamping block is attached to one end of a reset key, and the other end of the reset key is positioned outside the cavity formed in the joint of the device main board and the bayonet groove, a through hole is arranged at the joint of the device main board and the reset key, a rack is arranged at the other side of the center of the side surface of the L-shaped block, a first gear is meshed with the rack, one end of the first gear is fixedly connected with one end of a second connecting rod, the other end of the second connecting rod penetrates through the through hole arranged at the center of one side of the device main board adjacent to the first gasket and is fixedly connected with one end of a second gear, the second gear is meshed with a third gear, one end of the third gear is fixedly connected with one end of a connecting rod, second cavities are respectively arranged at two sides of the center of the clamping slide rod, through holes are respectively arranged at two sides of the center of the clamping slide rod and are coaxial with the second cavities, a second clamping column is positioned in the through hole to slide, one end of the second clamping column is positioned outside the second cavity, and the other end of the second clamping column penetrates through the second cavity and is connected with one end of a second sealing cover through threads, the second sealing cover is respectively positioned in a groove formed in one side of the rubber pad, the other side of the rubber pad is tightly attached to one side of the clamping slide rod, two sides of the center of the second clamping column are respectively hinged to one end of a third connecting rod, the other end of the third connecting rod is respectively hinged to one end of a second sliding block, the other end of the second sliding block is provided with a groove, the groove is fixedly connected with one end of a third spring, cylindrical grooves are respectively formed in two sides of a second cavity, the second sliding block slides in the cylindrical grooves, the other end of the third spring is fixedly connected with the cylindrical grooves formed in two sides of the second cavity, a first scale plate is fixedly mounted on the device main board, and the first scale plate is perpendicular to the side cover.

Furthermore, one side of the bottom of the L-shaped block is fixedly connected with one end of a fourth spring, the other end of the fourth spring is fixedly connected with two sides of the top end of the clamping block, and the bottom of the clamping block is fixedly connected with a third gasket.

Furthermore, one side of the main board of the device, which is far away from the first gasket, is fixedly connected with the side cover through a bolt, a through hole is formed in one side of the side cover, a through hole is formed in the joint of the side cover and the connecting rod, and the other end of the connecting rod is fixedly connected with the handle through a bolt.

Furthermore, the adjacent two sides of the main board and the first gasket of the device are respectively provided with a sliding groove, the two ends of the clamping slide bar are respectively positioned in the sliding grooves to slide, the two ends of one side, close to the side cover, of the clamping slide bar are respectively fixedly connected with one end of a second spring, and the second spring is positioned in the sliding groove.

Furthermore, the center of one side of the clamping slide bar is fixedly connected with a handle, one end of the clamping slide bar is fixedly connected with the pointer through threads, and the pointer is matched and connected with the first scale plate.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model is beneficial to protecting the workpiece and avoiding the scratch phenomenon of the workpiece through the first gasket, the second gasket, the third gasket and the rubber pad, the rotation of the third gear is driven by shaking the handle, the second gear is meshed with the second gear by means of the mutual meshing of the third gear and one end of the third gear, the two ends of the second connecting rod are respectively and fixedly connected with one end of the second gear and one end of the third gear, the first gear is meshed with the rack, thereby controlling the movement of the L-shaped block and further clamping the workpiece, simultaneously, the clamping block is attached to the bayonet groove by utilizing the action of the fifth spring on the clamping block, the clamping block is prevented from rebounding and loosening to clamp the workpiece, the workpiece is beneficial to clamping the workpiece, the workpiece is beneficial to measuring the size of the clamped workpiece through the first scale plate, the second scale plate and the pointer, the action of the first spring on the first slider is realized, because the two ends of the first connecting rod are respectively hinged with the first slider and one side of the center of the first connecting column, thereby the atress acts on first tight post of clamp for first closing cap is fixed with first gasket, is favorable to preventing that the work piece from by the fish tail, is convenient for change the gasket simultaneously, through the effect of third spring to the second slider, because the both ends of third connecting rod are articulated with center one side of second slider and second spliced pole respectively, thereby the tight post of atress effect second clamp for the second closing cap is fixed the rubber pad, and then is convenient for change the rubber pad.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a top sectional view of the present invention;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is an enlarged view of area B of FIG. 3;

fig. 6 and 7 are left side sectional views of the partial structure of the present invention;

in the figure: 1. a first scale plate; 2. a device main board; 3. a first gasket; 4. a first spring; 5. a side cover; 6. a first clamping post; 7. a first link; 8. a first slider; 9. a first cover; 10. a second gasket; 11. a through groove; 12. a first gear; 13. a second link; 14. a sliding groove; 15. a rubber pad; 16. clamping the sliding rod; 17. a second spring; 18. a second gear; 19. a connecting rod; 20. a handle; 21. a third gear; 22. a second clamping post; 23. a pointer; 24. a third spring; 25. a second slider; 26. a second cover; 27. a clamping block; 28. an L-shaped block; 29. a fourth spring; 30. a bayonet slot; 31. a clamping block; 32. a reset key; 33. connecting columns; 34. a fifth spring; 35. a third link; 36. a handle; 37. a second scale plate; 38. a third gasket; 39. a first cavity; 40. a second cavity; 41. a rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a measuring and positioning scratch-proof device comprises a first scale plate 1, a device main plate 2, a first gasket 3, a first spring 4, a side cover 5, a first clamping column 6, a first connecting rod 7, a first sliding block 8, a first sealing cover 9, a second gasket 10, a through groove 11, a first gear 12, a second connecting rod 13, a sliding groove 14, a rubber pad 15, a clamping sliding rod 16, a second spring 17, a second gear 18, a connecting rod 19, a handle 20, a third gear 21, a second clamping column 22, a pointer 23, a third spring 24, a second sliding block 25, a second sealing cover 26, a clamping block 27, an L-shaped block 28, a fourth spring 29, a bayonet groove 30, a clamping block 31, a reset key 32, a connecting column 33, a fifth spring 34, a third connecting rod 35, a handle 36, a second scale plate 37, a third gasket 38, a first cavity 39, a second cavity 40 and a rack 41, wherein one side of the top of the device main plate 2 is fixedly connected with the second scale plate 37 through a screw, one side of the device main board 2 is uniformly provided with a first cavity 39, one side of the device main board 2 is provided with a through hole, the through hole penetrates through the center of the first cavity 39, meanwhile, the first clamping column 6 slides in the through hole, one end of the first clamping column 6 is positioned outside one side of the device main board 2, the other end of the first clamping column 6 penetrates through the through hole formed in one side of the device main board 2 and is connected with one end of a first sealing cover 9 through screw threads, the first sealing cover 9 is positioned in a groove uniformly formed in one side of a first gasket 3, the other side of the first gasket 3 is tightly attached to the device main board 2, two sides of the center of the first clamping column 6 are respectively hinged with one end of a first connecting rod 7, the other end of the first connecting rod 7 is respectively hinged with one end of a first sliding block 8, the other end of the first sliding block 8 is provided with a groove, the groove is fixedly connected with one end of a first spring 4, two sides of the first cavity 39 are provided with cylindrical grooves, the first sliding block 8 slides in the cylindrical groove, the other end of the first spring 4 is fixedly connected with the cylindrical groove arranged at two sides of the first cavity 39, one side of the device main board 2 adjacent to the first gasket 3 is fixedly connected with the second gasket 10, one side of the device main board 2 adjacent to the first gasket 3 is provided with a through groove 11, an L-shaped block 28 is placed in the through groove 11, one side of the bottom of the L-shaped block 28 is respectively and fixedly connected with one end of a fourth spring 29, the other end of the fourth spring 29 is respectively and fixedly connected with two sides of the top end of a clamping block 27, the bottom of the clamping block 27 is fixedly connected with a third gasket 38, the workpiece is clamped conveniently, meanwhile, the third gasket 38 is in contact with the workpiece to clamp and is favorable for preventing the workpiece from being scratched, the lower part of the L-shaped block 28 is provided with a sliding groove, one end of the clamping block 27 is positioned in the sliding groove, one side of the center of the side surface of the L-shaped block 28 is provided with a bayonet groove 30, the fixture block 31 is located in the bayonet groove 30, one end of the fixture block 31 close to the L-shaped block 28 is fixedly connected with one end of the fifth spring 34, a cavity is formed in the joint of the device main board 2 and the bayonet groove 30, the other end of the fifth spring 34 is fixedly connected with the inside of a groove formed in the cavity, meanwhile, a connecting column 33 is rotatably connected into the cavity through a bearing, the center of the connecting column 33 is fixedly sleeved with a through hole formed in one end of the center of the fixture block 31, the other end of the fixture block 31 is attached to one end of a reset key 32, the other end of the reset key 32 is located outside the cavity formed in the joint of the device main board 2 and the bayonet groove 30, a through hole is formed in the joint of the device main board 2 and the reset key 32, a rack 41 is formed in the other side of the side surface of the L-shaped block 28, the first gear 12 is meshed with the rack 41, one end of the first gear 12 is fixedly connected with one end of the second connecting rod 13, and the other end of the second connecting rod 13 penetrates through hole and the center formed in the side of the adjacent to the first gasket 3 of the device main board 2 and the through hole One end of a second gear 18 is fixedly connected, the second gear 18 is meshed with a third gear 21, one end of the third gear 21 is fixedly connected with one end of a connecting rod 19, one side of a device main board 2, which is far away from a first gasket 3, is fixedly connected with a side cover 5 through a bolt, one side of the side cover 5 is provided with a through hole, the connecting part of the side cover 5 and the connecting rod 19 is provided with a through hole, the other end of the connecting rod 19 is fixedly connected with a handle 20 through a bolt, the connecting rod 19 is limited through the through hole of the side cover 5, the handle 20 and the connecting rod 19 are utilized to operate gears inside the device main board 2, which is beneficial to positioning and clamping a workpiece, two adjacent sides of the device main board 2 and the first gasket 3 are respectively provided with a sliding groove 14, two ends of a clamping slide bar 16 are respectively positioned in the sliding grooves 14, and two ends of one side, which is close to the side cover 5, of the clamping slide bar 16 are respectively fixedly connected with one end of a second spring 17, and the second spring 17 is positioned in the sliding groove 14, the clamping slide bar 16 is pushed to slide in the sliding groove 14 by the elasticity of the second spring 17, so that one side of the workpiece is attached to the first gasket 3 to facilitate the preliminary positioning and clamping of the workpiece, the handle 36 is fixedly connected to the center of one side of the clamping slide bar 16, one end of the clamping slide bar 16 is fixedly connected to the pointer 23 through threads, the pointer 23 is connected to the first scale plate 1 in a mutually matched manner, the position of the clamping slide bar 16 is conveniently adjusted through the handle 36 to facilitate the preliminary positioning and clamping of the workpiece, meanwhile, the pointer 23 is combined with the first scale plate 1 to facilitate the measurement of the clamped workpiece, the second cavities 40 are respectively formed on two sides of the center of the clamping slide bar 16, the two sides of the center of the clamping slide bar 16 are respectively formed with through holes, the through holes are coaxial with the second cavities 40, and the second clamping columns 22 are positioned in the through holes to slide, one end of the second clamping column 22 is located outside the second cavity 40, the other end of the second clamping column 22 penetrates through the second cavity 40 and is connected with one end of the second sealing cover 26 through threads, the second sealing cover 26 is respectively located in a groove formed in one side of the rubber pad 15, the other side of the rubber pad 15 is tightly attached to one side of the clamping slide bar 16, two sides of the center of the second clamping column 22 are respectively hinged with one end of the third connecting rod 35, the other end of the third connecting rod 35 is respectively hinged with one end of the second sliding block 25, the other end of the second sliding block 25 is provided with a groove, and the groove is fixedly connected with one end of the third spring 24, the two sides of the second cavity 40 are respectively provided with a cylindrical groove, the second slider 25 slides in the cylindrical groove, the other end of the third spring 24 is fixedly connected with the cylindrical groove formed in the two sides of the second cavity 40, the first scale plate 1 is fixedly installed on the device main board 2, and the first scale plate 1 is perpendicular to the side cover 5; in the specific operation of the utility model, firstly, the reset key 32 is pressed down to make the fixture block 31 rotate around the connection column 33, the fixture block 31 extrudes the fifth spring 34 to make one end of the fixture block 31 separate from the bayonet groove 30, at this time, the handle 20 is rotated to fixedly connect with one end of the third gear 21 through the connection rod 19, the third gear 21 is meshed with the second gear 18, two ends of the second connection rod 13 are respectively fixedly connected with one ends of the first gear 12 and the second gear 18, the first gear 12 is meshed with the rack 41, and further the position of the L-shaped block 28 is driven to move upwards, then the clamping block 27 is driven to move under the pulling of the fourth spring 29, then the handle 36 is pulled to make the clamping slide bar 16 slide along the sliding groove 14, the workpiece is placed on the device main board 2, one side of the workpiece is attached to the second gasket 10, then the clamping slide bar 16 is pushed by the second spring 17, the rubber pad 15 is used to make the workpiece be attached to the first gasket 3, finishing the preliminary positioning of the workpiece, then rotating the handle 20 to make the L-shaped block 28 move downwards along the through groove 11 under the driving of the rack 41, driving the clamping block 27 and the third gasket 38 to move downwards along with the downward movement of the L-shaped block 28, when the third gasket 38 comes into contact with the workpiece, the third gasket 38 starts to be pressed in the direction of the workpiece, then starts to press the clamping block 27, and the fourth spring 29 is gradually pressed, when the workpiece is completely clamped, stopping rotating the handle 20, and at the same time the fixture block 31 rotates around the connecting post 33 under the action of the fifth spring 34 to make the fixture block 31 clamped in the bayonet groove 30, so as to realize the locking of the L-shaped block 28 and finish the clamping of the workpiece, and at this time, the first gasket 3, the second gasket 10, the third gasket 38 and the rubber pad 15 prevent the workpiece from being scratched, and finishing the measurement of the workpiece in one direction through the second scale plate 37 fixed on the top of one side of the device main plate 2, meanwhile, the measurement in the other direction of the workpiece is completed through the pointer 23 connected with one end of the clamping slide bar 16, after the operation is completed, the reset key 32 is pressed down, the fixture block 31 rotates around the connecting column 33, the fixture block 31 extrudes the fifth spring 34 to enable one end of the fixture block 31 to be separated from the bayonet groove 30, at the moment, the L-shaped block 28 can move upwards along the through groove 11, then the handle 20 is rotated to drive the L-shaped block 28 to move upwards along the through groove 11, then under the pulling of the fourth spring 29, the clamping block 27 drives the third gasket 38 to be separated from the workpiece to release the clamping of the workpiece, then the handle 36 is pulled to drive the clamping slide bar 16 and the rubber gasket 15 to be separated from the workpiece to release the positioning of the workpiece, when the first gasket 3 is replaced, the first sealing cover 9 is rotated to release the fixing with the first clamping column 6, at the moment, under the extrusion of the first spring 4, the first slide block 8 is driven to slide in the direction of being separated from the groove, and then the first connecting rod 7 is driven, then the first clamping column 6 is driven to slide towards the outer side of the device mainboard 2, then the first gasket 3 is taken out for replacement, then the first clamping column 6 is pressed to pass through the action of the first connecting rod 7, the first sliding block 8 extrudes the first spring 4 along the direction of the groove, then the first sealing cover 9 is put into the groove arranged at one side of the replaced first gasket 3, the position is adjusted to fix the first sealing cover 9 and one end of the first clamping column 6 again, the replacement of the first gasket 3 is completed, when the rubber gasket 15 is replaced, the second sealing cover 26 is firstly rotated to be released from the fixation with the second clamping column 22, at the moment, the second sliding block 25 is driven to slide towards the direction of separating from the groove under the extrusion of the third spring 24, then the third connecting rod 35 is driven, then the second clamping column 22 is driven to slide towards the outer side of the device mainboard 2, then the rubber gasket 15 is taken out for replacement, then the second clamping column 22 is pressed to pass through the action of the third connecting rod 35, the second slider 25 presses the third spring 24 along the groove direction, then the second sealing cover 26 is placed in the groove formed in one side of the replaced rubber pad 15, the position is adjusted to fix the second sealing cover 26 and one end of the second clamping column 22 again, and the replacement of the rubber pad 15 is completed.

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.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a measure location and prevent fish tail device, includes first scale plate (1), device mainboard (2), first gasket (3), first spring (4), side cap (5), first clamp post (6), first connecting rod (7), first slider (8), first closing cap (9), second gasket (10), logical groove (11), first gear (12), second connecting rod (13), sliding tray (14), rubber pad (15), press from both sides tight slide bar (16), second spring (17), second gear (18), connecting rod (19), handle (20), third gear (21), second clamp post (22), pointer (23), third spring (24), second slider (25), second closing cap (26), press from both sides tight piece (27), L type piece (28), fourth spring (29), bayonet socket groove (30), fixture block (31), reset key (32), Spliced pole (33), fifth spring (34), third connecting rod (35), handle (36), second scale plate (37), third gasket (38), first cavity (39), second cavity (40) and rack (41), its characterized in that: one side of the top of the device main board (2) is fixedly connected with the second scale plate (37) through screws, one side of the device main board (2) is uniformly provided with a first cavity (39), one side of the device main board (2) is provided with a through hole, the through hole penetrates through the center of the first cavity (39), meanwhile, a first clamping column (6) slides in the through hole, one end of the first clamping column (6) is positioned outside one side of the device main board (2), the other end of the first clamping column (6) penetrates through the through hole formed in one side of the device main board (2) and is connected with one end of a first sealing cover (9) through threads, the first sealing cover (9) is positioned in a groove uniformly formed in one side of a first gasket (3), the other side of the first gasket (3) is tightly attached to the device main board (2), two sides of the center of the first clamping column (6) are respectively hinged with one end of a first connecting rod (7), the other end of the first connecting rod (7) is hinged with one end of a first sliding block (8) respectively, the other end of the first sliding block (8) is provided with a groove, the groove is fixedly connected with one end of a first spring (4), two sides of the first cavity (39) are provided with cylindrical grooves, the first sliding block (8) slides in the cylindrical grooves, the other end of the first spring (4) is fixedly connected with the cylindrical grooves formed in the two sides of the first cavity (39), one side of the device main board (2) adjacent to the first gasket (3) is fixedly connected with a second gasket (10), one side of the device main board (2) adjacent to the first gasket (3) is provided with a through groove (11), an L-shaped block (28) is placed in the through groove (11), the lower part of the L-shaped block (28) is provided with a sliding groove, and one end of the clamping block (27) is positioned in the sliding groove, a bayonet groove (30) is formed in one side of the center of the side face of the L-shaped block (28), the clamping block (31) is located in the bayonet groove (30), one end, close to the L-shaped block (28), of the clamping block (31) is fixedly connected with one end of a fifth spring (34), a cavity is formed in the joint of the device main board (2) and the bayonet groove (30), the other end of the fifth spring (34) is fixedly connected with a groove formed in the cavity, a connecting column (33) is rotatably connected into the cavity through a bearing, the center of the connecting column (33) is fixedly sleeved with a through hole formed in one end of the center of the clamping block (31), the other end of the clamping block (31) is attached to one end of a reset key (32), the other end of the reset key (32) is located outside the cavity formed in the joint of the device main board (2) and the bayonet groove (30), and a through hole is formed in the joint of the device main board (2) and the reset key (32), the other side of the center of the side face of the L-shaped block (28) is provided with a rack (41), a first gear (12) is meshed with the rack (41), one end of the first gear (12) is fixedly connected with one end of a second connecting rod (13), the other end of the second connecting rod (13) penetrates through a through hole formed in the center of one side of the device main board (2) adjacent to the first gasket (3) and is fixedly connected with one end of a second gear (18), the second gear (18) is meshed with a third gear (21), one end of the third gear (21) is fixedly connected with one end of a connecting rod (19), two sides of the center of the clamping slide bar (16) are respectively provided with a second cavity (40), two sides of the center of the clamping slide bar (16) are respectively provided with a through hole which is coaxial with the second cavity (40), and a second clamping column (22) is positioned in the through hole to slide, one end of the second clamping column (22) is located outside the second cavity (40), the other end of the second clamping column (22) penetrates through the second cavity (40) and is connected with one end of the second sealing cover (26) through threads, the second sealing cover (26) is located in a groove formed in one side of a rubber pad (15) respectively, the other side of the rubber pad (15) is tightly attached to one side of the clamping slide rod (16), two sides of the center of the second clamping column (22) are hinged to one end of a third connecting rod (35) respectively, the other end of the third connecting rod (35) is hinged to one end of a second sliding block (25) respectively, a groove is formed in the other end of the second sliding block (25) and is fixedly connected with one end of a third spring (24) in the groove, cylindrical grooves are formed in two sides of the second cavity (40) respectively, and the second sliding block (25) slides in the cylindrical grooves, the other end of the third spring (24) is fixedly connected with the inside of a cylindrical groove formed in two sides of the second cavity (40), a first scale plate (1) is fixedly mounted on the device main plate (2), and the first scale plate (1) is perpendicular to the side cover (5).

2. The measuring and positioning scratch-proof device according to claim 1, wherein: one side of the bottom of the L-shaped block (28) is fixedly connected with one end of a fourth spring (29), the other end of the fourth spring (29) is fixedly connected with two sides of the top end of the clamping block (27), and the bottom of the clamping block (27) is fixedly connected with a third gasket (38).

3. The measuring and positioning scratch-proof device according to claim 1, wherein: one side of the main board (2) far away from the first gasket (3) is fixedly connected with the side cover (5) through a bolt, a through hole is formed in one side of the side cover (5), the connecting position of the side cover (5) and the connecting rod (19) is provided with a through hole, and the other end of the connecting rod (19) is fixedly connected with the handle (20) through a bolt.

4. The measuring and positioning scratch-proof device according to claim 1, wherein: the device mainboard (2) and the adjacent both sides of first gasket (3) have seted up sliding tray (14) respectively, and press from both sides the both ends of pressing from both sides tight slide bar (16) and lie in sliding tray (14) respectively and slide, press from both sides one side both ends that tight slide bar (16) are close to side cap (5) and respectively with the one end fixed connection of second spring (17), and second spring (17) lie in sliding tray (14).

5. The measuring and positioning scratch-proof device according to claim 1, wherein: the handle (36) is fixedly connected to the center of one side of the clamping sliding rod (16), one end of the clamping sliding rod (16) is fixedly connected with the pointer (23) through threads, and the pointer (23) is connected with the first scale plate (1) in a matched mode.