CN217764907U - Sieve tube length measuring device - Google Patents

Abstract

The utility model relates to the technical field of length measuring devices, in particular to a sieve tube length measuring device; the pipe feeding mechanism is added, so that the manual operation of carrying the pipe feeding mechanism is reduced, the manual use is reduced, and the use convenience of equipment is improved; including first backup pad, first backup pad top left side is provided with the measuring board, still include feed mechanism, unloading mechanism and measuring mechanism, feed mechanism includes the flitch, two sets of first threaded rods, two sets of screwed pipe and two sets of first motors, the fixed first fixed plate that is provided with in first backup pad front end, the fixed second fixed plate that is provided with of first fixed plate front end downside, unloading mechanism includes flitch and multiunit unloading axle down, measuring mechanism includes the second threaded rod, second screwed pipe and arrestment mechanism, the fixed second backup pad that is provided with in first backup pad top right side, the rotatable threaded rod of second sets up in second backup pad left end, second threaded pipe thread insert locates second threaded rod lateral wall.

Description

Sieve tube length measuring device

Technical Field

The utility model relates to a length measurement device's technical field especially relates to a screen pipe length measurement device.

Background

As is well known, a sieve tube length measuring device is a device used for measuring and detecting sieve tubes after the sieve tubes are processed, and is widely used in the field of measuring devices; the existing sieve tube length measuring device comprises a first supporting plate, wherein a measuring plate is arranged on the left side of the top end of the first supporting plate, a measuring groove is formed in the right side of the measuring plate, a first measuring machine body is fixedly arranged in the measuring groove, and a second measuring machine body is arranged on the upper right side of an operating plate; when the existing sieve tube length measuring device is used, a sieve tube to be measured is placed at the top end of a first supporting plate, the left end of the sieve tube is tightly attached to the right end of the measuring plate, a second measuring machine body is located at the right end of the sieve tube, the sieve tube can be measured by the first measuring machine body and the second measuring machine body, the first measuring machine body and the second measuring machine body are purchased from the market, and can be directly used after being measured by an infrared technology; the existing sieve tube length measuring device is found in use, when a sieve tube with a larger outer diameter is measured, the sieve tube needs to be moved up and down manually, meanwhile, manual measurement needs to be carried out on the sieve tube manually, the use convenience of equipment is poor, and more manpower is needed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides an it is not enough to prior art, the utility model provides an increase top tube mechanism reduces the artifical operation of carrying it, reduces the use of manpower, improve equipment's sieve pipe length measuring device of use convenience.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model discloses a sieve tube length measuring device, including first backup pad, first backup pad top left side is provided with the measuring plate, and the measuring plate right side is provided with the measuring groove, and the measuring groove internal fixation is provided with first measurement organism, and the upper right side of operation panel is provided with the second and measures the organism; the automatic feeding device also comprises a feeding mechanism, a discharging mechanism and a measuring mechanism;

the feeding mechanism comprises a feeding plate, two groups of first threaded rods, two groups of threaded pipes and two groups of first motors, wherein a first fixing plate is fixedly arranged at the front end of a first supporting plate, a second fixing plate is fixedly arranged on the lower side of the front end of the first fixing plate, the top ends of the two groups of first threaded rods are rotatably arranged on the left side and the right side of the top end of the second fixing plate, the first threaded pipes are sleeved on the outer side walls of the two groups of first threaded rods in a threaded manner, the feeding plate is fixedly arranged between the two groups of first threaded pipes, third fixing plates are fixedly arranged at the top ends of the two groups of first threaded rods, the rear sides of the bottom ends of the two groups of third fixing plates are respectively connected with the top ends of the first fixing plates, and the two groups of first motors are respectively fixedly arranged at the top ends of the two groups of third fixing plates and respectively connected with the top ends of the two groups of first threaded rods;

the blanking mechanism comprises blanking plates and a plurality of groups of blanking shafts;

the measuring mechanism comprises a second threaded rod, a second threaded pipe and a braking mechanism, a second supporting plate is fixedly arranged on the right side of the top end of the first supporting plate, the second threaded rod is rotatably arranged at the left end of the second supporting plate, the outer side wall of the second threaded rod is sleeved with the second threaded pipe in a threaded mode, the bottom end of the second threaded pipe is connected with the top end of the second measuring machine body through a first connecting plate, and the second threaded rod rotates through the braking mechanism.

Preferably, the brake mechanism includes second motor, two sets of transmission wheels and conveyer belt, and the fixed connecting axle that is provided with of second threaded rod right-hand member, the rotatable second backup pad upside that passes of connecting axle right-hand member, the second motor is fixed to be set up in first backup pad top right side, and two sets of transmission wheels are fixed respectively and are set up in second motor output and connecting axle right-hand member, and two sets of transmission wheels pass through the conveyer belt transmission and connect, and second screwed pipe top is provided with stop gear.

Preferably, stop gear includes gag lever post and spacing pipe, and the gag lever post is fixed to be set up in second backup pad left end upside, and the gag lever post lateral wall is located to spacing pipe box, and spacing pipe passes through the second connecting plate to be connected with second screwed pipe top.

Preferably, still include transmission device, first backup pad top left side is provided with the transmission groove, transmission device sets up in the transmission groove, transmission device includes multiunit transmission axle, multiunit transmission axle front end and rear end respectively with transmission groove front end and rear end rotatable coupling, multiunit transmission axle passes through the transmission band transmission and connects, the fixed third motor that is provided with in first backup pad rear end right side, third motor output is rotatable to be passed behind the first backup pad rear end and is connected with right side transmission axle rear end.

Preferably, still include two sets of limiting plates, the rear side limiting plate is fixed to be set up in first backup pad top rear side, and first backup pad top front side is provided with first elongated hole, and the front side limiting plate sets up in first elongated hole, and first backup pad bottom front side is fixed and is provided with two sets of first cylinders, and two sets of first cylinder output end is connected with the front side limiting plate bottom left and right sides respectively.

Preferably, still include the second cylinder, the second cylinder is fixed to be set up in first backup pad bottom left side, and first backup pad left side is provided with the long type hole of second, and the second cylinder output passes behind the long type hole of second and is connected with measuring board bottom middle part, and the flitch is fixed to be set up in first backup pad left end down, and the flitch top is provided with down the silo, and multiunit unloading axle is rotatable respectively to be set up in the silo down.

Preferably, the left front side, the left back side, the right front side and the right back side of the bottom end of the first supporting plate are all fixedly provided with supporting legs.

(III) advantageous effects

Compared with the prior art, the utility model provides a screen pipe length measuring device possesses following beneficial effect: when the sieve tube is fed, the sieve tube is placed at the top end of the feeding plate, the two groups of first motors rotate, under the connecting action, the two groups of first threaded rods rotate along with the sieve tube, under the screwing action of the threads, the two groups of first threaded tubes move upwards along with the sieve tube, under the connecting action, the feeding plate drives the sieve tube to move upwards, the sieve tube moves upwards to be at the normal height of the first supporting plate, at the moment, the sieve tube moves backwards to the top end of the first supporting plate to measure the sieve tube, during the measuring process, the sieve tube is moved to the left end of the sieve tube to be in contact with the right end of the sieve tube, at the moment, the braking mechanism drives the second threaded rods to rotate, under the screwing action of the threads, the second threaded tubes move towards the left side, the second measuring machine body is driven to move towards the left side, when the second measuring machine body moves towards the left side to be in contact with the right end of the sieve tube, the measuring operation of the sieve tube can be completed, after the measurement, the blanking can be carried out through a blanking mechanism, the manual operation of carrying is reduced, the use of manpower, and the convenience of the equipment is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the transmission mechanism and the measurement mechanism of the present invention;

fig. 3 is a schematic perspective view of the feeding mechanism of the present invention;

fig. 4 is a schematic perspective view of the conveying mechanism and the second cylinder, etc. of the present invention;

in the drawings, the reference numbers: 1. a first support plate; 2. measuring a plate; 3. a first measuring machine body; 4. a second measuring machine body; 5. feeding plates; 6. a first threaded rod; 7. a first threaded pipe; 8. a first motor; 9. a first fixing plate; 10. a second fixing plate; 11. a third fixing plate; 12. a blanking plate; 13. a blanking shaft; 14. a second threaded rod; 15. a second threaded pipe; 16. a second support plate; 17. a second motor; 18. a transmission wheel; 19. a conveyor belt; 20. a limiting rod; 21. a limiting pipe; 22. a transmission shaft; 23. a conveyor belt; 24. a third motor; 25. a limiting plate; 26. a first cylinder; 27. a second cylinder; 28. and (7) supporting legs.

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. 1-4, the sieve tube length measuring device of the present invention comprises a first supporting plate 1, a measuring plate 2 is disposed on the left side of the top end of the first supporting plate 1, a measuring groove is disposed on the right side of the measuring plate 2, a first measuring machine body 3 is fixedly disposed in the measuring groove, and a second measuring machine body 4 is disposed on the upper right side of the first supporting plate 1; the automatic feeding device also comprises a feeding mechanism, a discharging mechanism and a measuring mechanism;

the feeding mechanism comprises a feeding plate 5, two groups of first threaded rods 6, two groups of first threaded pipes 7 and two groups of first motors 8, a first fixing plate 9 is fixedly arranged at the front end of a first supporting plate 1, a second fixing plate 10 is fixedly arranged on the lower side of the front end of the first fixing plate 9, the top ends of the two groups of first threaded rods 6 are rotatably arranged on the left side and the right side of the top end of the second fixing plate 10, the first threaded pipes 7 are sleeved on the outer side walls of the two groups of first threaded rods 6 in a threaded mode, the feeding plate 5 is fixedly arranged between the two groups of first threaded pipes 7, third fixing plates 11 are fixedly arranged on the top ends of the two groups of first threaded rods 6, the rear sides of the bottom ends of the two groups of third fixing plates 11 are respectively connected with the top ends of the first fixing plates 9, and the two groups of first motors 8 are respectively fixedly arranged on the top ends of the two groups of third fixing plates 11 and are respectively connected with the top ends of the two groups of first threaded rods 6;

the blanking mechanism comprises a blanking plate 12 and a plurality of groups of blanking shafts 13;

measuring mechanism includes second threaded rod 14, second screwed pipe 15 and arrestment mechanism, and 1 top right side of first backup pad is fixed and is provided with second backup pad 16, and second threaded rod 14 is rotatable to be set up in 16 left ends of second backup pad, and 14 lateral walls of second threaded rod are located to 15 spiro union covers of second threaded pipe, and second threaded pipe 15 bottom is measured organism 4 tops through first connecting plate and second and is connected, and second threaded rod 14 rotates through arrestment mechanism.

In this application, when carrying out the material loading of screen pipe, place the screen pipe on flitch 5 top, two sets of first motors 8 rotate, under the connection effect, two sets of first threaded rods 6 rotate along with it, under the spiral shell dress of screw thread effect, two sets of first threaded pipes 7 along with the rebound, under the connection effect, flitch 5 drives the screen pipe rebound along with it, with screen pipe rebound to with first backup pad 1 height to normal time, at this moment, remove the screen pipe to first backup pad 1 top to the rear side can measure the screen pipe, in the measurement process, at first remove the screen pipe to the screen pipe left end and measure 2 right-hand members of board and contact, at this moment, brake mechanism drives second threaded rod 14 and rotates, under the spiral shell dress of screw thread effect, second threaded pipe 15 moves to the left side along with it, second threaded pipe 15 drives second and measures 4 and moves to the left side, when moving second measurement organism 4 to the left side and screen pipe and right-hand member contact, can accomplish the measurement operation of screen pipe, after the measurement, can carry out the unloading through the manual work to its unloading mechanism, reduce the operation of carrying, the use of the improvement of the transport equipment.

Specifically, the top end of the second fixing plate 10 is provided with a feeding groove, the depth of the feeding groove is the same as the thickness of the feeding plate 5, so that when the feeding plate 5 moves downwards to the bottommost end, the feeding plate 5 is level with the height of the second fixing plate 10, and the sieve tube can move conveniently.

Specifically, two sets of third fixed plates 11 all set up to the type of falling L, can realize that two sets of screwed pipes 7 drive flitch 5 rebound, can make flitch 5 height and first backup pad 1 highly parallel to each other on, the material loading of the sieve pipe of being convenient for.

In the embodiment of the application, arrestment mechanism includes second motor 17, two sets of transmission wheels 18 and conveyer belt 19, the fixed connecting axle that is provided with in second threaded rod 14 right-hand member, the connecting axle right-hand member is rotatable to pass 16 upsides in second backup pad, second motor 17 is fixed to be set up in 1 top right sides in first backup pad, two sets of transmission wheels 18 are fixed respectively to be set up in second motor 17 output and connecting axle right-hand member, two sets of transmission wheels 18 pass through conveyer belt 19 transmission and connect, 15 tops of second screwed pipe are provided with stop gear.

In this application, when the brake mechanism drives second threaded rod 14 and rotates, second motor 17 drives downside transmission wheel 18 and rotates, and under the transmission effect of conveyer belt 19, upside transmission wheel 18 rotates thereupon, and under the connection effect of connecting axle, second threaded rod 14 rotates thereupon to this braking that can realize second threaded rod 14.

Specifically, the second motor 17 can rotate reversely, and the second motor 17 can drive the second threaded rod 14 to rotate reversely while rotating reversely, so that the second threaded pipe 15 can move reversely, and convenience in measuring sieve pipes with different lengths can be realized.

In this application embodiment, stop gear includes gag lever post 20 and spacing pipe 21, and gag lever post 20 is fixed to be set up in the 16 left ends upside of second backup pad, and gag lever post 20 lateral wall is located to spacing pipe 21 cover, and spacing pipe 21 passes through the second connecting plate to be connected with second screwed pipe 15 top.

In this application, when second screwed pipe 15 removes from second threaded rod 14 lateral wall and moves, the spacing pipe 21 of being connected with second screwed pipe 15 removes from limiting rod 20 lateral wall thereupon, to this can realize measuring organism 4 spacing with the second to second screwed pipe 15, reduces second screwed pipe 15 and rotates thereupon when following second threaded rod 14 pivoted, improve equipment's use reliability.

In the embodiment of the application, still include transmission device, 1 top left side of first backup pad is provided with the transmission groove, transmission device sets up in the transmission groove, transmission device includes multiunit transmission axle 22, multiunit transmission axle 22 front end and rear end respectively with transmission groove front end and rear end rotatable coupling, multiunit transmission axle 22 passes through transmission band 23 transmission and connects, 1 rear end right side of first backup pad is fixed and is provided with third motor 24, the rotatable back that passes 1 rear end of first backup pad of third motor 24 output is connected with right side transmission axle 22 rear end.

In this application, when measuring the screen pipe, the screen pipe removes the transmission band 23 top to 1 top of first backup pad, and third motor 24 drives right side transmission shaft 22 and rotates this moment, under the transmission of transmission band 23, can drive the screen pipe and remove to measuring board 2 right-hand members to the left side, reducible artifical operation of moving left to the screen pipe, improve equipment's use convenience.

Specifically, third motor 24 and 1 rear end fixed connection of first backup pad, third motor 24 passes through bearing and 1 rotatable coupling of first backup pad simultaneously, can improve third motor 24's rotational stability.

In particular, the transmission belt 23 is level with the first support plate 1, which facilitates the screen moving operation.

In the embodiment of the present application, still include two sets of limiting plates 25, the rear side limiting plate 25 is fixed to be set up in first backup pad 1 top rear side, and first backup pad 1 top front side is provided with first elongated hole, and front side limiting plate 25 sets up in first elongated hole, and first backup pad 1 bottom front side is fixed and is provided with two sets of first cylinders 26, and two sets of first cylinders 26 output are connected with the left and right sides in front side limiting plate 25 bottom respectively.

In this application, two sets of limiting plates 25 all can carry on spacingly to the screen pipe that moves the in-process on a left side, reduce the phenomenon of rocking around taking place at the screen pipe and removing the in-process, and simultaneously after the screen pipe removed to the 23 tops of transmission band from last flitch 5 tops, two sets of first cylinders 26 can drive front side limiting plate 25 and upwards remove and carry on spacingly to the screen pipe.

Specifically, two sets of first cylinders 26 are connected through reinforcing frame and first backup pad 1 bottom, improve first cylinder 26's stability.

In the embodiment of the application, still include second cylinder 27, second cylinder 27 is fixed to be set up in 1 bottom left side of first backup pad, and 1 left side of first backup pad is provided with the long-type hole of second, and second cylinder 27 output passes behind the long-type hole of second and is connected with 2 bottom middle parts of measuring plate, and lower flitch 12 is fixed to be set up in 1 left end of first backup pad, and lower flitch 12 top is provided with down the silo, and multiunit unloading axle 13 is rotatable respectively to be set up in lower silo.

In this application, after measuring, second cylinder 27 drives and measures board 2 and moves down, makes and measures board 2 and move to the downthehole second elongated, measures board 2 height and first backup pad 1 this moment and is flat mutually, and at this moment under the effect of transmission band 23, the screen pipe moves and carries out the unloading to the left side, can carry out the unloading to the screen pipe through unloading axle 13.

In the embodiment of the present application, the left front side, the left back side, the right front side and the right back side of the bottom end of the first supporting plate 1 are all fixedly provided with the supporting legs 28.

In the present application, the legs 28 may improve the stability of the device.

When in use, firstly, the sieve tube is placed at the top end of the feeding plate 5, the two groups of first motors 8 rotate, under the connecting action, the two groups of first threaded rods 6 rotate along with the sieve tube, under the screw-mounting action of the threads, the two groups of first threaded tubes 7 move up along with the first threaded rods, under the connecting action, the feeding plate 5 drives the sieve tube to move up along with the sieve tube, when the sieve tube moves up to the height corresponding to the first supporting plate 1, the sieve tube moves to the rear side to the top end of the transmission belt 23, the two groups of first cylinders 26 can drive the front side limiting plate 25 to move up and limit the sieve tube, the third motor 24 drives the right side transmission shaft 22 to rotate, under the transmission action of the transmission belt 23, the sieve tube can be driven to move to the left side to the right end of the measuring plate 2, at the moment, the second motor 17 drives the lower side transmission wheel 18 to rotate, under the transmission action of the conveyor belt 19, the upper transmission wheel 18 rotates along with the conveyor belt, under the connection action of the connecting shaft, the second threaded rod 14 rotates along with the conveyor belt, under the screw assembly action of the threads, the second threaded pipe 15 moves towards the left side along with the conveyor belt, the second threaded pipe 15 drives the second measuring machine body 4 to move towards the left side, when the second measuring machine body 4 moves towards the left side to be in contact with the right end of the sieve pipe, the measurement operation of the sieve pipe can be completed, after the measurement is completed, the second air cylinder 27 drives the measuring plate 2 to move downwards, the measuring plate 2 is moved into the second long hole, the height of the measuring plate 2 is equal to that of the first supporting plate 1, at the moment, under the action of the conveyor belt 23, the sieve pipe moves towards the left side and performs blanking, and the blanking of the sieve pipe can be completed through the blanking shaft 13.

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.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

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

Claims (7)

1. A sieve tube length measuring device comprises a first supporting plate (1), wherein a measuring plate (2) is arranged on the left side of the top end of the first supporting plate (1), a measuring groove is formed in the right side of the measuring plate (2), a first measuring machine body (3) is fixedly arranged in the measuring groove, and a second measuring machine body (4) is arranged on the upper right side of the first supporting plate (1); the device is characterized by also comprising a feeding mechanism, a discharging mechanism and a measuring mechanism;

the feeding mechanism comprises a feeding plate (5), two groups of first threaded rods (6), two groups of first threaded pipes (7) and two groups of first motors (8), wherein a first fixing plate (9) is fixedly arranged at the front end of a first supporting plate (1), a second fixing plate (10) is fixedly arranged at the lower side of the front end of the first fixing plate (9), the top ends of the two groups of first threaded rods (6) are rotatably arranged at the left side and the right side of the top end of the second fixing plate (10), the first threaded pipes (7) are arranged on the outer side walls of the two groups of first threaded rods (6) in a sleeved mode in a screwed mode, the feeding plate (5) is fixedly arranged between the two groups of first threaded pipes (7), third fixing plates (11) are fixedly arranged at the top ends of the two groups of first threaded rods (6), the rear sides of the bottom ends of the two groups of third fixing plates (11) are respectively connected with the top ends of the first fixing plates (9), and the two groups of first motors (8) are respectively fixedly arranged at the top ends of the two groups of third fixing plates (11) and respectively connected with the top ends of the first threaded rods (6);

the blanking mechanism comprises a blanking plate (12) and a plurality of groups of blanking shafts (13);

measuring mechanism includes second threaded rod (14), second screwed pipe (15) and arrestment mechanism, first backup pad (1) top right side is fixed and is provided with second backup pad (16), second threaded rod (14) are rotatable to be set up in second backup pad (16) left end, second threaded pipe (15) spiral shell dress cover is located second threaded rod (14) lateral wall, second screwed pipe (15) bottom is measured organism (4) top through first connecting plate and second and is connected, second threaded rod (14) rotate through arrestment mechanism.

2. The sieve tube length measuring device of claim 1, wherein the brake mechanism comprises a second motor (17), two sets of transmission wheels (18) and a conveyor belt (19), a connecting shaft is fixedly arranged at the right end of the second threaded rod (14), the right end of the connecting shaft can rotatably penetrate through the upper side of the second support plate (16), the second motor (17) is fixedly arranged at the right side of the top end of the first support plate (1), the two sets of transmission wheels (18) are respectively and fixedly arranged at the output end of the second motor (17) and the right end of the connecting shaft, the two sets of transmission wheels (18) are in transmission connection through the conveyor belt (19), and a limiting mechanism is arranged at the top end of the second threaded pipe (15).

3. The screen pipe length measuring device of claim 2, wherein the limiting mechanism comprises a limiting rod (20) and a limiting pipe (21), the limiting rod (20) is fixedly arranged on the upper side of the left end of the second supporting plate (16), the limiting pipe (21) is sleeved on the outer side wall of the limiting rod (20), and the limiting pipe (21) is connected with the top end of the second threaded pipe (15) through a second connecting plate.

4. The screen pipe length measuring device of claim 3, further comprising a transmission mechanism, wherein a transmission groove is formed in the left side of the top end of the first support plate (1), the transmission mechanism is arranged in the transmission groove and comprises a plurality of groups of transmission shafts (22), the front ends and the rear ends of the plurality of groups of transmission shafts (22) are rotatably connected with the front ends and the rear ends of the transmission groove respectively, the plurality of groups of transmission shafts (22) are in transmission connection through a transmission belt (23), a third motor (24) is fixedly arranged on the right side of the rear end of the first support plate (1), and the output end of the third motor (24) can rotatably penetrate through the rear end of the first support plate (1) and then is connected with the rear end of the right transmission shaft (22).

5. The screen pipe length measuring device of claim 4, further comprising two sets of limiting plates (25), wherein the rear limiting plate (25) is fixedly arranged at the rear side of the top end of the first supporting plate (1), a first elongated hole is formed in the front side of the top end of the first supporting plate (1), the front limiting plate (25) is arranged in the first elongated hole, two sets of first cylinders (26) are fixedly arranged at the front side of the bottom end of the first supporting plate (1), and the output ends of the two sets of first cylinders (26) are respectively connected with the left side and the right side of the bottom end of the front limiting plate (25).

6. The screen pipe length measuring device of claim 5, further comprising a second cylinder (27), wherein the second cylinder (27) is fixedly arranged on the left side of the bottom end of the first support plate (1), a second elongated hole is formed in the left side of the first support plate (1), an output end of the second cylinder (27) penetrates through the second elongated hole and then is connected with the middle of the bottom end of the measuring plate (2), the blanking plate (12) is fixedly arranged at the left end of the first support plate (1), a blanking groove is formed in the top end of the blanking plate (12), and a plurality of groups of blanking shafts (13) are respectively and rotatably arranged in the blanking groove.

7. The screen length measuring device of claim 6, wherein the bottom end of the first support plate (1) is fixedly provided with support legs (28) at the left front side, the left rear side, the right front side and the right rear side.

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