CN212530243U

CN212530243U - Screen plate rotating device for plastic uptake machine

Info

Publication number: CN212530243U
Application number: CN202021364983.4U
Authority: CN
Inventors: 缪静安
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-02-12
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a sieve tray rotating device for a plastic uptake machine, which comprises an installation platform (1), wherein a positioning disk (2) is arranged on the installation platform (1); a lifting device (3) is arranged on the bottom surface of the positioning disc (2), and adjusting seats (4) positioned on the mounting platform (1) are arranged on the two sides of the positioning disc (2); each adjusting seat (4) is provided with a clamping device (5), and the end part of one clamping device (5) is connected with a rotating device (6); the bottom surface of each clamping device (5) is connected with a moving device. The utility model discloses not only can improve work efficiency, still have low in labor strength, stability height, convenient to use, low in production cost, long service life, application scope are wide, the operation precision is high, occupation space is little, simple to operate and the high advantage of stability in use.

Description

Screen plate rotating device for plastic uptake machine

Technical Field

The utility model relates to an auxiliary assembly for plastic uptake machine, especially sieve tray rotary device for plastic uptake machine.

Background

When the rhinestones are packaged, firstly, a flat drill, a rhinestone and the like are placed on a sucker, then a sieve plate is placed above the sucker, then the sieve plate is turned over manually, so that the rhinestones on the sucker fall onto a suction plate, then a plastic film is laid above the suction plate, and finally hot pressing and vacuumizing are performed, so that the whole package is completed; the sucker is manually operated to turn back and forth, the sucker has heavier weight, and the weight of the whole body is increased again after the rhinestone and the sieve plate are ironed, so that the whole labor intensity is higher; and because all are accomplished by manual operation, can produce tired sense when using for a long time, lead to the holistic work efficiency lower. Therefore, the problems of low working efficiency and high labor intensity exist in the existing manual overturning process of the sucker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sieve tray rotary device for plastic uptake machine. The utility model discloses not only can improve work efficiency, still have the advantage that intensity of labour is low.

The technical scheme of the utility model: the sieve tray rotating device for the plastic uptake machine comprises an installation platform, wherein a positioning disk is arranged on the installation platform; a lifting device is arranged on the bottom surface of the positioning disc, and adjusting seats positioned on the mounting platform are arranged on the two sides of the positioning disc; each adjusting seat is provided with a clamping device, and the end part of one clamping device is connected with a rotating device; and a moving device is connected to the bottom surface of each clamping device.

In the sieve tray rotating device for the plastic uptake machine, the clamping device comprises a clamping cylinder, and a clamping push rod is installed on the clamping cylinder; the clamping push rod is fixedly sleeved with a shaft sleeve, and two linkage parts which are symmetrically distributed and obliquely arranged are rotatably arranged at the end part of the shaft sleeve close to the clamping cylinder; the end of each linkage piece is fixedly provided with a gripper.

In the sieve tray rotating device for the plastic uptake machine, the rotating device comprises a rotating motor, and a cam divider is connected to the rotating motor; the cam divider is fixedly connected with the end part of the shaft sleeve; the shaft sleeve is sleeved on the clamping cylinder.

In the sieve tray rotating device for the plastic uptake machine, the moving device comprises a moving plate which is positioned on the adjusting seat and far away from the side surface of the positioning plate, and a fixed moving seat is arranged on the top surface of the moving plate; the fixed moving seat is connected with a moving cylinder which is fixedly arranged on the adjusting seat; one side of the fixed movable seat is provided with a movable connecting piece, and the end part of the movable connecting piece is provided with a movable sleeve; the movable sleeve is sleeved on the shaft sleeve; two bearings which are symmetrically arranged are arranged between the movable sleeve and the shaft sleeve; the rotating device is fixedly arranged on the surface of the moving plate.

In the sieve tray rotating device for the plastic uptake machine, two symmetrically arranged slide rails are arranged at the position, corresponding to the moving plate, on the top surface of the adjusting seat, and the moving plate is arranged between the two slide rails in a sliding manner.

In the sieve tray rotating device for the plastic uptake machine, the lifting device comprises a ball screw, and the bottom end part of the ball screw is connected with a servo motor; a movable nut is arranged at the top end part of the ball screw in a threaded manner, and a lifting platform is fixedly arranged on the movable nut; the top surface of the lifting platform is fixedly provided with a lifting rod, and the end part of the lifting rod is fixedly connected with the middle part of the bottom surface of the positioning disk.

In the sieve tray rotating device for the plastic uptake machine, the surface of the lifting rod is sleeved with the dustproof telescopic sleeve; a bottom fixing disc is fixedly arranged on the servo motor corresponding to the position connected with the ball screw, and supporting rods are fixedly arranged between the four corners of the bottom fixing disc and the bottom surface of the mounting platform; through holes are formed in the positions, corresponding to the support rods, of the lifting platform, and a fixing piece is arranged in each through hole; the fixing piece is sleeved on the supporting rod in a sliding mode.

In the sieve tray rotating device for the plastic uptake machine, a cavity is formed in the position, corresponding to the clamping cylinder, of the shaft sleeve, and a mounting window is formed in the position, corresponding to the clamping cylinder, of the side face of the shaft sleeve.

In the sieve tray rotating device for the plastic uptake machine, the middle part of the top surface of the positioning tray is provided with the positioning sheet, and the middle part of the positioning sheet is provided with the positioning groove; an electromagnetic sensor is arranged in the positioning groove.

In the sieve tray rotating device for the plastic uptake machine, the bottom surface of the adjusting seat is provided with a plurality of uniformly distributed waist holes, and the side surface of the adjusting seat close to the positioning disk is provided with a plurality of uniformly distributed positioning holes; each positioning hole is provided with a positioning rod, and each positioning rod is provided with a fixing block; and a fixing strip is arranged on the surface of the mounting platform at a position corresponding to the waist hole.

Compared with the prior art, the utility model improves the existing screen tray overturning mode, and through arranging two symmetrically arranged clamping devices on the mounting platform, one of the clamping devices is connected with a rotating device, the two sides of the screen tray are clamped through the clamping devices, and then the rotating device drives the clamping device on one side to rotate so as to drive the screen tray to overturn, and the clamping device on the other side can be driven to rotate along with the clamping devices, so that the automatic overturning work of the screen tray is realized, the screen tray overturning work is replaced by the manual work in the past, the working efficiency is improved, and the working intensity is reduced; two ends of the sieve tray can be indefinite by arranging the two clamping devices, so that the overturning stability is improved; the positioning disc is arranged on the mounting platform, and the bottom surface of the screen disc can be fixed by the positioning disc, so that the screen disc can be kept stable when not clamped, and the subsequent work is facilitated; simultaneously, through installing elevating gear on the bottom surface at the positioning disk, utilize elevating gear to drive the positioning disk and can reciprocate to in the upset, the positioning disk can not stop in the distance of sieve dish upset, further made things convenient for the use. In addition, the utility model is also provided with a clamping cylinder and a clamping push rod, and the clamping push rod is driven to be pushed to move by the cylinder, so that the clamping push rod can drive the linkage piece to move forwards, and the linkage piece drives one end of the gripper to move downwards, thereby realizing the clamping action; the arrangement of the clamping push rod reduces the requirement on the clamping cylinder, facilitates production and further reduces production cost; the shaft sleeve is sleeved on the clamping push rod, and the shaft sleeve can be used for supporting and protecting the outer side of the whole clamping device, so that the strength of the whole structure is improved, the damage and the like of the clamping device can be reduced, and the service life is prolonged; by arranging the cam divider, the kinetic energy of the rotation of the rotating motor can be transferred to the shaft sleeve by the cam divider, and meanwhile, the rotating angle of the shaft sleeve can be accurately controlled, so that the overturning precision is improved; the movable air cylinder is arranged on the adjusting seat, and the movable air cylinder drives the whole movable seat to move back and forth so as to drive the clamping device to move back and forth, so that the screen tray is convenient to move out and in, and the use is further convenient; the two sliding rails are arranged on the adjusting seat, and the moving plate is arranged between the two sliding rails in a sliding manner, so that the moving stability of the clamping device is improved; the lifting device is set to be a ball screw and a servo motor, so that the moving accuracy of the positioning disc is improved; the dustproof telescopic sleeve is sleeved on the lifting rod, and a protective shell can be formed on the surface of the lifting rod by using the dustproof telescopic sleeve, so that the service life is further prolonged; the top end part of the dustproof telescopic sleeve is fixedly connected with the bottom surface of the positioning disc, so that the positioning disc can be supported to a certain extent in moving, and the stability is further improved; by arranging the supporting rod and the bottom fixing disc, a supporting frame is formed between the lifting platform and the servo motor, so that the stability of the whole structure is further improved; the cavity for installing the clamping cylinder is formed in the shaft sleeve, and the installation window is formed in the cavity, so that the clamping device can be arranged in the rotating device, the size of the whole structure is reduced, the structure is more compact, and the occupied space is reduced; the installation of the air pipe of the clamping cylinder can be facilitated due to the arrangement of the installation window; the positioning plate is arranged on the top surface of the positioning disc, the positioning groove is formed in the middle of the positioning plate, and the positioning plate and the positioning groove can be used for accurately positioning the position of the placed sieve plate, so that the circle center of the sieve plate can coincide with the circle center of the aluminum plate, and the working stability is further improved; the electromagnetic sensor is arranged in the positioning groove, so that the positioning accuracy can be judged by using the electromagnetic sensor, and the working precision is further improved; the adjusting seats are provided with a plurality of uniformly distributed waist holes, the mounting platform is provided with the fixing strips, and the distance between the two adjusting seats can be adjusted by utilizing the waist holes and the fixing strips, so that the clamping device can be suitable for clamping sieve trays with different sizes, and the application range is expanded; through setting up locating hole, locating lever and fixed block, can carry on spacingly to the removal of adjusting seat, guaranteed the stationarity of removal. Therefore, the utility model discloses not only can improve work efficiency, still have low in labor strength, stability is high, convenient to use, low in production cost, long service life, application scope are wide, the operation precision is high, occupation space is little, simple to operate and the high advantage of stability in use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

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

fig. 3 is a cross-sectional view a-a of fig. 2.

The labels in the figures are: 1-mounting platform, 2-positioning plate, 3-lifting device, 4-adjusting seat, 5-clamping device, 6-rotating device, 7-clamping cylinder, 8-clamping push rod, 9-shaft sleeve, 10-linkage piece, 11-gripper, 12-rotating motor, 13-cam divider, 14-moving plate, 15-fixed moving seat, 16-moving cylinder, 17-moving connecting piece, 18-moving sleeve, 19-sliding rail, 20-ball screw, 21-servo motor, 22-moving nut, 23-lifting platform, 24-lifting rod, 15-dustproof telescopic sleeve, 26-bottom fixing plate, 27-supporting rod, 28-fixing piece, 29-mounting window, 31-positioning plate, 32-positioning groove, 34-waist hole, 36-positioning rod, 37-fixing block.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. The sieve tray rotating device for the plastic uptake machine is shown in figures 1 to 3 and comprises an installation platform 1, wherein a positioning disk 2 is arranged on the installation platform 1; a lifting device 3 is arranged on the bottom surface of the positioning disc 2, and adjusting seats 4 positioned on the mounting platform 1 are arranged on both sides of the positioning disc 2; each adjusting seat 4 is provided with a clamping device 5, and the end part of one clamping device 5 is connected with a rotating device 6; a moving device is connected to the bottom surface of each clamping device 5.

The clamping device 5 comprises a clamping cylinder 7, and a clamping push rod 8 is installed on the clamping cylinder 7; a shaft sleeve 9 is fixedly sleeved on the clamping push rod 8, and two linkage pieces 10 which are symmetrically distributed and obliquely arranged are rotatably arranged at the end part, close to the clamping cylinder 7, of the shaft sleeve 9; the end part of each linkage piece 10 is fixedly provided with a gripper 11; the rotating device 6 comprises a rotating motor 12, and a cam divider 13 is connected to the rotating motor 12; the cam divider 13 is fixedly connected with the end part of the shaft sleeve 9; the shaft sleeve 9 is sleeved on the clamping cylinder 7; the moving device comprises a moving plate 14 which is positioned on the adjusting seat 4 and far away from the side surface of the positioning disc 2, and a fixed moving seat 15 is arranged on the top surface of the moving plate 14; the fixed moving seat 15 is connected with a moving cylinder 16, and the moving cylinder 16 is fixedly arranged on the adjusting seat 4; a movable connecting piece 17 is arranged on one side of the fixed movable seat 15, and a movable sleeve 18 is arranged at the end part of the movable connecting piece 17; the movable sleeve 18 is sleeved on the shaft sleeve 9; two bearings which are symmetrically arranged are arranged between the movable sleeve 18 and the shaft sleeve 9; the rotating device 6 is fixedly arranged on the surface of the moving plate 14; two symmetrically arranged slide rails 19 are arranged on the top surface of the adjusting seat 4 at positions corresponding to the moving plate 14, and the moving plate 14 is arranged between the two slide rails 19 in a sliding manner; the lifting device 3 comprises a ball screw 20, and the bottom end part of the ball screw 20 is connected with a servo motor 21; a movable nut 22 is screwed on the top end part of the ball screw 20, and an elevating platform 23 is fixedly arranged on the movable nut 22; a lifting rod 24 is fixedly arranged on the top surface of the lifting platform 23, and the end part of the lifting rod 24 is fixedly connected with the middle part of the bottom surface of the positioning disk 2; a dustproof telescopic sleeve 25 is sleeved on the surface of the lifting rod 24; a bottom fixing disc 26 is fixedly arranged on the servo motor 21 corresponding to the position connected with the ball screw 20, and supporting rods 27 are fixedly arranged between four corners of the bottom fixing disc 26 and the bottom surface of the mounting platform 1; through holes are formed in the positions, corresponding to the support rods 27, of the lifting platform 23, and a fixing piece 28 is arranged in each through hole; the fixing piece 28 is sleeved on the supporting rod 27 in a sliding manner; a cavity is arranged on the shaft sleeve 9 at a position corresponding to the clamping cylinder 7, and a mounting window 29 is arranged on the side surface of the shaft sleeve 9 at a position corresponding to the clamping cylinder 7; a positioning sheet 31 is arranged in the middle of the top surface of the positioning disc 2, and a positioning groove 32 is arranged in the middle of the positioning sheet 31; an electromagnetic sensor is arranged in the positioning groove 32; a plurality of uniformly distributed waist holes 34 are formed in the bottom surface of the adjusting seat 4, and a plurality of uniformly distributed positioning holes are formed in the side surface, close to the positioning disc 2, of the adjusting seat 4; each positioning hole is provided with a positioning rod 36, and each positioning rod 36 is provided with a fixing block 37; the surface of the mounting platform 1 is provided with a fixing strip at the position corresponding to the waist hole 34.

The working principle is as follows: when the device is used, the whole device is connected with an external commercial power, then the movable air cylinder 16 is started, the movable air cylinder 16 pushes the fixed movable seat 15 to move towards the side edge of the mounting platform 1 after being started, and the fixed movable seat 15 is fixedly mounted on the movable plate 14, so that the movable air cylinder 16 pushes the fixed movable seat 15 to move and simultaneously drives the movable plate 14 to move, and the movable plate 14 can move on the adjusting seat 4 according to the slide rail 19; because the clamping devices 5 and the rotating devices 6 are both mounted on the moving plate 14, when the moving plate 14 moves, the clamping devices 5 and the rotating devices 6 are simultaneously driven to move simultaneously, and the two clamping devices 5 are further away from each other; then, a sucker to be turned over is placed right above the positioning disc 2 (the positioning disc 2 can be an aluminum disc), the circle center of the positioning disc 2 is overlapped with the circle center of the sucker, the movable air cylinder 16 is controlled to stop after the sucker is placed, the movable air cylinder 16 drives the movable plate 14 and the clamping device 5 and the rotating device 6 on the movable plate 14 to be close to each other after stopping, and after the moving strokes of the clamping device 5 and the rotating device 6 reach, the two end parts of the sucker are located between the two grippers 11; at this time, the clamping cylinder 7 is controlled to start, the clamping cylinder 7 drives the push rod on the clamping cylinder 7 to move towards the gripper 11 after starting, the clamping push rod 8 is pushed to move in the moving process of the push rod, since the hand grip 11 is rotatably mounted on the end of the sleeve 9 by means of the link 10, and the end of the link 10 is connected to the clamping pusher 8, so that when the clamping push rod 8 moves towards the gripper 11, one end of the linkage 10 is pushed outwards, the linkage member 10 is inclined, so that when one end of the linkage member 10 moves outwards, the other end moves upwards, and because the hand grip 11 is mounted on the other end of the linkage 10, so that the upward movement of the hand grip 11 drives the hand grip 11 to move toward the other hand grip 11, therefore, the two grippers 11 on the two sides can fix and clamp the end part of the sucker, and the whole clamping work is completed.

After the clamping work is finished, the servo motor 21 is controlled to be started reversely, the servo motor 21 can drive the ball screw 20 to rotate reversely after being started reversely, the ball screw 20 can drive the moving nut 22 to move towards the servo motor 21 when rotating reversely, the lifting platform 23 is fixedly installed on the moving nut 22, the lifting platform 23 can be synchronously driven to move towards the servo motor 21 when the moving nut 22 moves, the lifting platform 23 can drive the lifting rod 24 to move when moving, the end part of the lifting rod 24 is fixedly connected with the bottom surface of the positioning disk 2, so that the lifting rod 24 can synchronously drive the positioning disk 2 to move together when moving, and the positioning disk 2 is separated from the sucker to suspend the sucker; because the lifting platform 23 is slidably connected with each supporting rod 27 through the fixing piece 28, the supporting rods 27 can play a certain role in guiding the movement of the lifting platform 23 in the movement process of the lifting platform 23; because the surface of the lifting rod 24 is sleeved with the dustproof telescopic sleeve 25, one end part of the telescopic sleeve 25 is fixedly connected with the surface of the mounting platform 1, the lifting rod 24 can drive the dustproof telescopic sleeve 25 to contract or stretch when moving, a good dustproof effect on the lifting rod 24 is achieved, and the service life is prolonged.

When the bottom surface of the positioning disk 2 contacts with the bottom surface of the mounting platform 1, the servo motor 21 is controlled to stop working, then the rotating motor 12 is controlled to start, the cam divider 13 is driven to rotate after the rotating motor 12 is started, the shaft sleeve 9 is driven to rotate after the cam divider 13 rotates, since the whole clamping device 5 and the hand grip 11 are mounted on the sleeve 9, so that the rotation of the sleeve 9 will simultaneously drive the clamping device 5 and the hand grip 11 to rotate, so that the clamping device 5 and the gripper 11 connected with the rotating motor can rotate actively, the gripper 11 can drive the sucker to turn synchronously when rotating, the gripper 11 on the other side can be driven to rotate when turning, the shaft sleeves 9 on the two sides are rotatably arranged on the adjusting seat 4, so that the shaft sleeves 9 can rotate along with the hand grip 11 in a driven manner, and the sucker can be stably turned; and the cam divider 13 can ensure that the rotation angle of the shaft sleeve 9 is 180 degrees in forward rotation or 180 degrees in reverse rotation.

After the sucker is turned over, the servo motor 21 is controlled to be started in the forward direction, the servo motor 21 can drive the ball screw 20 to rotate in the forward direction after being started in the forward direction, the ball screw 20 can drive the moving nut 22 to move towards the mounting platform 1 when rotating in the forward direction, the lifting table 23 can be synchronously driven to move when the moving nut 22 moves, the lifting table 23 can drive the lifting rod 24 to move when moving, the end part of the lifting rod 24 is fixedly connected with the bottom surface of the positioning disc 2, so that the lifting rod 24 can synchronously drive the positioning disc 2 to move together when moving, the positioning disc 2 is contacted with the bottom surface of the turned sucker again, and the sucker is supported; the lifting rod 24 can drive the dustproof telescopic sleeve 15 to be pulled up while moving; after the positioning disc 2 is overturned and the bottom surface of the sucking disc is contacted, the clamping cylinder 7 is controlled to stop, the clamping cylinder 7 can drive the push rod arranged on the clamping cylinder 7 to move towards the direction opposite to the gripper 11 after stopping, the clamping push rod 8 can be pushed to move in the process of moving the push rod, since the hand grip 11 is rotatably mounted on the end of the sleeve 9 by means of the link 10, and the end of the link 10 is connected to the clamping pusher 8, so that when the clamping push rod 8 moves towards the direction opposite to the hand grip 11, one end of the linkage 10 is pushed inwards, the linkage member 10 is inclined, so that when one end of the linkage member 10 moves inwards, the other end moves downwards, the gripper 11 is arranged at the other end of the linkage 10, so that the gripper 11 is driven to move in the opposite direction of the other gripper 11 in the downward moving process, and the two grippers 11 at the two sides can release the end of the sucker; after the gripper 11 releases the suction cup, the moving cylinder 16 is controlled to start, and the moving cylinder 16 pushes the fixed moving seat 15 to move towards the side of the mounting platform 1 after starting, because the fixed moving seat 15 is fixedly mounted on the moving plate 14, the moving cylinder 16 drives the moving plate 14 to move while pushing the fixed moving seat 15 to move, so that the moving plate 14 can move on the adjusting seat 4 according to the slide rail 19; because clamping device 5 and rotating device 6 are all installed on movable plate 14 again to can drive clamping device 5 and rotating device 6 simultaneously and remove when making movable plate 14 remove, and then make two clamping device 5 keep away from each other, accomplish a upset work, later just can take out the sucking disc that the upset is good, then place another sucking disc that needs the upset on positioning disk 2, thereby can carry out next upset work.

When the diameter of the sucker needing to be turned over needs to be changed, in order to ensure that the gripper 11 can grasp the sucker and the turning space of the sucker, the waist hole 34 can be changed to be in contact with the fixing strips at different positions, so that the area of the adjusting seat 4 coinciding with the mounting platform 1 is changed, the distance between the two adjusting seats 4 is adjusted, the sucker can be adapted to the turning work of the suckers with different sizes, and the application range is enlarged.

Claims

1. Plastic uptake machine sieve dish rotary device, its characterized in that: comprises an installation platform (1), wherein a positioning disc (2) is arranged on the installation platform (1); a lifting device (3) is arranged on the bottom surface of the positioning disc (2), and adjusting seats (4) positioned on the mounting platform (1) are arranged on the two sides of the positioning disc (2); each adjusting seat (4) is provided with a clamping device (5), and the end part of one clamping device (5) is connected with a rotating device (6); the bottom surface of each clamping device (5) is connected with a moving device.

2. The sieve tray rotating device for a plastic uptake machine according to claim 1, wherein: the clamping device (5) comprises a clamping cylinder (7), and a clamping push rod (8) is installed on the clamping cylinder (7); a shaft sleeve (9) is fixedly sleeved on the clamping push rod (8), and two linkage parts (10) which are symmetrically distributed and obliquely arranged are rotatably arranged at the end part, close to the clamping cylinder (7), of the shaft sleeve (9); the end part of each linkage piece (10) is fixedly provided with a handle (11).

3. The sieve tray rotating device for a plastic uptake machine according to claim 2, wherein: the rotating device (6) comprises a rotating motor (12), and a cam divider (13) is connected to the rotating motor (12); the cam divider (13) is fixedly connected with the end part of the shaft sleeve (9); the shaft sleeve (9) is sleeved on the clamping cylinder (7).

4. The sieve tray rotating device for a plastic uptake machine according to claim 2, wherein: the moving device comprises a moving plate (14) which is positioned on the adjusting seat (4) and is far away from the side surface of the positioning disc (2), and a fixed moving seat (15) is arranged on the top surface of the moving plate (14); the fixed moving seat (15) is connected with a moving cylinder (16), and the moving cylinder (16) is fixedly arranged on the adjusting seat (4); a movable connecting piece (17) is arranged on one side of the fixed movable seat (15), and a movable sleeve (18) is arranged at the end part of the movable connecting piece (17); the movable sleeve (18) is sleeved on the shaft sleeve (9); two bearings which are symmetrically arranged are arranged between the movable sleeve (18) and the shaft sleeve (9); the rotating device (6) is fixedly arranged on the surface of the moving plate (14).

5. The sieve tray rotating device for a plastic uptake machine according to claim 4, wherein: two slide rails (19) which are symmetrically arranged are arranged on the top surface of the adjusting seat (4) at positions corresponding to the moving plate (14), and the moving plate (14) is arranged between the two slide rails (19) in a sliding manner.

6. The sieve tray rotating device for a plastic uptake machine according to claim 1, wherein: the lifting device (3) comprises a ball screw (20), and the bottom end part of the ball screw (20) is connected with a servo motor (21); a movable nut (22) is installed at the top end part of the ball screw (20) in a threaded mode, and a lifting platform (23) is fixedly installed on the movable nut (22); a lifting rod (24) is fixedly arranged on the top surface of the lifting platform (23), and the end part of the lifting rod (24) is fixedly connected with the middle part of the bottom surface of the positioning disk (2).

7. The sieve tray rotating device for a plastic uptake machine according to claim 6, wherein: a dustproof telescopic sleeve (25) is sleeved on the surface of the lifting rod (24); a bottom fixing disc (26) is fixedly arranged on the servo motor (21) corresponding to the position connected with the ball screw (20), and supporting rods (27) are fixedly arranged between four corners of the bottom fixing disc (26) and the bottom surface of the mounting platform (1); through holes are formed in the positions, corresponding to the support rods (27), of the lifting platform (23), and a fixing piece (28) is arranged in each through hole; the fixing piece (28) is sleeved on the supporting rod (27) in a sliding mode.

8. The sieve tray rotating device for a plastic uptake machine according to claim 3, wherein: a cavity is arranged on the shaft sleeve (9) at a position corresponding to the clamping cylinder (7), and a mounting window (29) is arranged on the side surface of the shaft sleeve (9) at a position corresponding to the clamping cylinder (7).

9. The sieve tray rotating device for a plastic uptake machine according to claim 1, wherein: a positioning sheet (31) is arranged in the middle of the top surface of the positioning disc (2), and a positioning groove (32) is arranged in the middle of the positioning sheet (31); an electromagnetic sensor is arranged in the positioning groove (32).

10. The sieve tray rotating apparatus for a plastic sucking machine according to any one of claims 1 to 9, wherein: a plurality of uniformly distributed waist holes (34) are formed in the bottom surface of the adjusting seat (4), and a plurality of uniformly distributed positioning holes are formed in the side surface, close to the positioning disc (2), of the adjusting seat (4); each positioning hole is provided with a positioning rod (36), and each positioning rod (36) is provided with a fixing block (37); and a fixing strip is arranged on the surface of the mounting platform (1) at a position corresponding to the waist hole (34).