CN219945976U

CN219945976U - Rotary positioning device

Info

Publication number: CN219945976U
Application number: CN202321390022.4U
Authority: CN
Inventors: 李�瑞; 黄启苗; 金雷
Original assignee: Cofco Package Kunshan Co ltd
Current assignee: Cofco Package Kunshan Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-11-03
Anticipated expiration: 2033-06-02

Abstract

The utility model relates to a rotary positioning device which comprises a mounting frame and a wire rail, wherein a righting cylinder is mounted at the top of the mounting frame in a matched manner, the output end of the righting cylinder is connected with a righting mechanism, a detection sensor is mounted at the middle part of the righting mechanism in a matched manner, a second mounting plate is mounted at the bottom of the wire rail in a matched manner, a square groove which is symmetrically arranged is formed in the end face of the second mounting plate, a first cylinder is mounted at the bottom of the second mounting plate in a matched manner, the output end of the first cylinder is connected with a turntable, transmission shafts which are symmetrically arranged are mounted at the bottom of the turntable, mounting seats are symmetrically mounted at the ends of the two transmission shafts, a first roller group which is connected with the output end of a servo motor is mounted at the top of one mounting seat in a matched manner, and a second roller group is mounted at the top of the other mounting seat in a matched manner. Through setting up righting mechanism, roller train, carousel and transmission shaft, can effectively restrict the degree of freedom of steel drum in horizontal direction and vertical direction to can improve detection accuracy and the detection efficiency of detecting sensor, improve steel drum machining efficiency.

Description

Rotary positioning device

Technical Field

The utility model relates to the technical field of steel drum processing auxiliary equipment, in particular to a rotary positioning device.

Background

The steel drum has excellent mechanical properties, and the steel drum container can be made into a thin-wall packaging container with high compressive strength and difficult damage, and can effectively ensure the safety and reliability of packaged products. The production process of the steel drum comprises the following steps: a barrel top, a barrel bottom and a barrel body stamping forming process, a steel barrel inner surface treatment process, a barrel top, a barrel bottom, a barrel body assembling process, a steel barrel outer surface treatment process and a barrel plug mounting process.

In the process of installing the bung, the bung can be installed at the bung opening only by positioning the bung opening of the steel drum. Bung hole positioner among the prior art makes the ladle rotatory through rotary mechanism, then monitors the bung hole position of ladle through detecting sensor real-time supervision ladle to the bung hole of location ladle. However, the problem that the ladle body rocks can appear in the rotary process for the position of bung hole can not be accurately detected to the detection sensor, can appear the condition of erroneous judgement even, and production efficiency and production precision are not high.

Disclosure of Invention

The inventor aims at the defects in the prior art, and provides the rotary positioning device, by arranging the righting mechanism, the roller group, the turntable and the transmission shaft, the freedom degree of the steel drum in the horizontal direction and the vertical direction can be effectively limited, the problem that the drum body of the steel drum shakes in the rotating process is prevented, and therefore the detection precision and the detection efficiency of the detection sensor can be effectively improved, and the processing efficiency of the steel drum is improved.

The technical scheme adopted by the utility model is as follows:

the rotary positioning device comprises a mounting frame, wherein a wire rail for transporting a steel drum is arranged at the bottom of the mounting frame, a righting cylinder is cooperatively arranged at the top of the mounting frame, the output end of the righting cylinder is connected with a righting mechanism, a first mounting plate is cooperatively arranged at the middle part of the righting mechanism, a detection sensor is cooperatively arranged at the bottom of the first mounting plate, and the righting cylinder drives the righting mechanism to do ascending or descending linear motion, so that the righting mechanism is attached to or far away from the top of the steel drum, and the degree of freedom of the steel drum in the horizontal direction is limited;

the bottom of the wire rail is provided with a second mounting plate in a matching way, the end face of the second mounting plate is provided with square grooves which are symmetrically arranged, the bottom of the second mounting plate is provided with a first cylinder in a matching way, the output end of the first cylinder is connected with a rotary table, the rotary table is rotationally arranged at the center position of the bottom of the second mounting plate, the bottom of the rotary table is provided with transmission shafts which are symmetrically arranged, the ends of the two transmission shafts are symmetrically provided with mounting seats, the two mounting seats are arranged at the two ends of the top of the second mounting plate through corresponding square grooves, the bottom of a single mounting seat is provided with a first sliding block in a matching way, and the first sliding block is matched with a first sliding rail arranged at the top of the second mounting plate;

the top of one mounting seat is provided with a first roller group in a matching way, the first roller group is connected with the output end of the servo motor, the top of the other mounting seat is provided with a second roller group in a matching way, the top of a second mounting plate between the two mounting seats is provided with symmetrically arranged guide blocks in a matching way, and the second mounting plate is arranged with the wire rail in a matching way through the two guide blocks;

the first cylinder rotates through the driving turntable, so that the two mounting seats are driven to do opposite or opposite linear motion along the first sliding rail through the transmission shaft, the first roller group and the second roller group are attached to or away from the outer circumferential surface of the steel drum, when the first roller group is attached to the outer circumferential surface of the steel drum, the servo motor drives the first roller group to rotate so as to drive the steel drum to rotate, and meanwhile, the detection sensor detects the position of a bung hole of the steel drum.

As a further improvement of the above technical scheme:

the structure of the righting mechanism is as follows: the hydraulic cylinder comprises a first connecting plate connected with the output end of a righting cylinder, wherein the bottom of the first connecting plate is installed at intervals through a plurality of spring plungers and a second connecting plate, a connecting shaft is installed at the center position of the bottom of the second connecting plate in a matched mode, a pressure plate is installed on the outer circumferential surface of the connecting shaft in a matched mode, and the bottom of the pressure plate corresponds to the top shape of a steel drum.

The top of pressure disk is provided with the axle sleeve, and the pressure disk passes through axle sleeve and connecting axle cooperation installation.

The connecting shaft penetrates through the through hole in the middle of the shaft sleeve and extends to the outside of the shaft sleeve, and the bottom surface of the connecting shaft is matched with the first mounting plate.

The first roller group has the structure that: including installing initiative gyro wheel and the first driven gyro wheel at a mount pad top, the output and the servo motor of initiative gyro wheel are connected, and the hold-in range is installed in the cooperation between initiative gyro wheel and the first driven gyro wheel, and initiative gyro wheel passes through drive wheel and hold-in range cooperation installation with first driven gyro wheel, and servo motor drive initiative gyro wheel is rotatory, and the initiative gyro wheel passes through the hold-in range and drives first driven gyro wheel rotation.

The output end of the servo motor is connected with the driving roller through a bevel gear transmission mechanism.

And a guide wheel is arranged beside the synchronous belt in a matched manner.

The second roller group comprises two second driven rollers arranged at the top of the other mounting seat, and the two second driven rollers, the driving roller and the first driven roller are symmetrically arranged at four corners of the top of the second mounting plate.

The wire rail is positioned between the two guide blocks, the bottom of the single guide block is provided with a second sliding block in a matched mode, the second sliding block is arranged in a matched mode with a second sliding rail, and the second sliding rail is arranged at the top of the second mounting plate;

the second air cylinder is mounted on the linear rail in a matched mode, the output end of the second air cylinder is connected with the second mounting plate, and the second air cylinder drives the second mounting plate to conduct linear motion along the second sliding rail.

The arrangement direction of the second sliding rail is parallel to the length direction of the linear rail.

The beneficial effects of the utility model are as follows:

the utility model has compact and reasonable structure and convenient operation, can ensure the motion stability of the steel drum in the rotating process by arranging the liftable pressure plate and the roller group which can move simultaneously, can effectively prevent the steel drum from shaking, and ensures that the rotating center and the detection sensor of the steel drum are kept relatively stable in the rotating process, thereby improving the detection precision and the detection efficiency of the detection sensor and ensuring the processing efficiency of the steel drum.

The utility model also has the following advantages:

(1) According to the utility model, the spring plunger is arranged in the centering mechanism, so that the pressure plate can float in a small range relative to the first connecting plate, the centering mechanism can compensate the height deviation of the steel drum, and the rotary positioning device can be suitable for steel drums with different processing standards.

(2) According to the utility model, through arranging the turntable, the synchronism of the horizontal movement of the two transmission shafts, the two mounting seats and the two roller sets is ensured, so that the steel drum is centered, the detection sensor can smoothly detect the bung hole of the steel drum, and the processing efficiency is ensured.

(3) According to the utility model, the second air cylinder, the second sliding rail and the second sliding block are arranged, so that the second mounting plate can move along the length direction of the linear rail, and the rotary positioning device can be matched with steel barrels of different types, and can be used for various use occasions.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a side view of fig. 1.

FIG. 4 is a schematic diagram of a righting mechanism according to the present utility model.

Fig. 5 is an exploded view of the righting mechanism in accordance with the present utility model.

Fig. 6 is a schematic structural view of a rotary positioning mechanism according to the present utility model.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is a front view of fig. 6.

Fig. 9 is a bottom view of fig. 6.

Fig. 10 is a schematic view of the present utility model in an operating state.

Wherein: 1. a mounting frame; 2. a wire rail; 3. centralizing the air cylinder; 4. a first mounting plate; 5. a detection sensor; 6. a righting mechanism; 7. a guide block; 8. a second mounting plate; 9. a first cylinder; 10. a turntable; 11. a transmission shaft; 12. a mounting base; 13. a square groove; 14. a first slider; 15. a first slide rail; 16. a first roller set; 17. a second roller set; 18. a servo motor; 19. a second cylinder; 20. a second slider; 21. a second slide rail; 22. a steel drum;

601. a first connection plate; 602. a second connecting plate; 603. a spring plunger; 604. a pressure plate; 605. a connecting shaft; 606. a shaft sleeve;

1601. a driving roller; 1602. a first driven roller; 1603. a synchronous belt; 1604. a driving wheel; 1605. a guide wheel;

1701. and a second driven roller.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

The structure and the function of the utility model are as follows:

as shown in fig. 1-10, a rotary positioning device comprises a mounting frame 1, wherein a wire rail 2 for transporting a steel drum 22 is arranged at the bottom of the mounting frame 1, a righting cylinder 3 is mounted at the top of the mounting frame 1 in a matched manner, an output end of the righting cylinder 3 is connected with a righting mechanism 6, a first mounting plate 4 is mounted at the middle part of the righting mechanism 6 in a matched manner, a detection sensor 5 is mounted at the bottom of the first mounting plate 4 in a matched manner, the righting cylinder 3 drives the righting mechanism 6 to perform ascending or descending linear motion, and the righting mechanism 6 is attached to or far away from the top of the steel drum 22 so as to limit the degree of freedom of the steel drum 22 in the horizontal direction. Through setting up righting mechanism 6, can assist righting steel drum 22 in the rotatory in-process of steel drum 22, with line rail 2 cooperation, restrict steel drum 22 in the degree of freedom of vertical direction to effectively prevent that steel drum 22 from rocking from top to bottom.

The second mounting plate 8 is installed in the bottom cooperation of linear rail 2, square groove 13 of symmetrical arrangement is opened to the terminal surface of second mounting plate 8, first cylinder 9 is fixed to the bottom of second mounting plate 8, carousel 10 is connected to the output of first cylinder 9, carousel 10 rotates the central point department of installing in second mounting plate 8 bottom, symmetrical arrangement's transmission shaft 11 is installed to the bottom of carousel 10, mount pad 12 is installed to the end symmetry of two transmission shafts 11, two mount pads 12 pass through the both ends at second mounting plate 8 top of corresponding square groove 13, first slider 14 is installed in the bottom cooperation of single mount pad 12, first slider 14 is installed with the first slide rail 15 cooperation of installing at second mounting plate 8 top. The two mounting seats 12 are respectively fixedly mounted with the ends of the two transmission shafts 11, and meanwhile, the two mounting seats 12 can be mounted on the top of the second mounting plate 8 through the square groove 13; the arrangement direction of the first slide rail 15 is perpendicular to the length direction of the wire rail 2.

The top cooperation of a mount pad 12 is installed first roller group 16, and first roller group 16 is connected with the output of servo motor 18, and the top cooperation of another mount pad 12 is installed second roller group 17, and the guide block 7 of symmetrical arrangement is installed to the cooperation of second mounting panel 8 top between two mount pads 12, and second mounting panel 8 passes through two guide blocks 7 and line rail 2 cooperation installation. The guide block 7 is used for connecting the second mounting plate 8 with the wire rail 2, and the guide block 7 is mounted in a matched manner with the wire rail 2 through a threaded connecting piece.

The first cylinder 9 rotates through driving the rotary table 10, so that the two mounting seats 12 are driven to do opposite or opposite linear motion along the first sliding rail 15 through the transmission shaft 11, the first roller set 16 and the second roller set 17 are attached to or away from the outer circumferential surface of the steel drum 22, when the first roller set 16 is attached to the outer circumferential surface of the steel drum 22, the servo motor 18 drives the first roller set 16 to rotate so as to drive the steel drum 22 to rotate, and meanwhile, the detection sensor 5 detects the position of a bung hole of the steel drum 22. When the first roller group 16 and the second roller group 17 are attached to the outer circumferential surface of the steel drum 22, the two roller groups restrict the degree of freedom of the steel drum 22 in the horizontal direction, thereby effectively preventing the displacement of the steel drum 22.

The structure of the righting mechanism 6 is as follows: the device comprises a first connecting plate 601 connected with the output end of a righting cylinder 3, wherein the bottom of the first connecting plate 601 is installed at intervals with a second connecting plate 602 through a plurality of spring plungers 603, a connecting shaft 605 is installed at the center of the bottom of the second connecting plate 602 in a matched mode, a pressure plate 604 is installed on the outer circumferential surface of the connecting shaft 605 in a matched mode, and the bottom of the pressure plate 604 corresponds to the top of a steel drum 22 in shape. The bottom of the pressure plate 604 is hollow disc-shaped, so that the contact area with the steel drum 22 can be increased, and the steel drum 22 is effectively prevented from shaking.

By providing a spring plunger 603 between the first connection plate 601 and the second connection plate 602, a telescopic buffering effect can be achieved, so that the rotary positioning device can be adapted to a steel drum 22 with a certain drum height deviation.

The top of the pressure plate 604 is provided with a shaft sleeve 606, and the pressure plate 604 is matched and installed with a connecting shaft 605 through the shaft sleeve 606; the connecting shaft 605 extends to the outside of the shaft sleeve 606 through a through hole in the middle of the shaft sleeve 606, and the bottom surface of the connecting shaft 605 is mounted in cooperation with the first mounting plate 4. The detection sensor 5 presses the lower part of the connecting shaft 605 through the first mounting plate 4, and meanwhile, the bottom of the pressure plate 604 is hollow, so that the detection sensor 5 is not blocked, and the detection sensor 5 can accurately find the bung hole position of the steel drum 22.

The rotary positioning mechanism comprises a second mounting plate 8 arranged at the bottom of the wire rail, a guide block 7, a first air cylinder 9, a rotary table 10, two transmission shafts 11, two mounting seats 12, a plurality of first sliding blocks 14, a plurality of first sliding rails 15 matched with the first sliding blocks 14, a first roller group 16, a second roller group 17, a plurality of second sliding blocks 20 and a plurality of second sliding rails 21 matched with the second sliding blocks, and also comprises a servo motor 18 and a second air cylinder 19, wherein the rotary positioning mechanism is used for enabling a steel drum 22 to rotate along the axis of the steel drum.

The first roller set 16 has the following structure: the device comprises a driving roller 1601 and a first driven roller 1602 which are arranged at the top of a mounting seat 12, wherein the output end of the driving roller 1601 is connected with a servo motor 18, a synchronous belt 1603 is arranged between the driving roller 1601 and the first driven roller 1602 in a matched manner, the driving roller 1601 and the first driven roller 1602 are arranged in a matched manner with the synchronous belt 1603 through a driving wheel 1604, the servo motor 18 drives the driving roller 1601 to rotate, and the driving roller 1601 drives the first driven roller 1602 to rotate through the synchronous belt 1603; the output end of the servo motor 18 is connected with the driving roller 1601 through a bevel gear transmission mechanism; a guide wheel 1605 is arranged beside the synchronous belt 1603 in a matched manner; the second roller group 17 includes two second driven rollers 1701 mounted on top of the other mounting base 12, and the two second driven rollers 1701, the driving roller 1601 and the first driven roller 1602 are symmetrically arranged at four corners of the top of the second mounting plate 8. The servo motor 18 is horizontally arranged, the driving roller 1601 is vertically installed, and the bevel gear transmission mechanism may convert the torque output from the horizontally arranged servo motor 18 into a torque for rotating the driving roller 1601 in the vertical direction.

The two roller groups are symmetrically arranged and synchronously move along the straight line of the first sliding rail 15; the driving roller 1601 and the first driven roller 1602 in the first roller group 16 are cooperatively provided with a synchronous belt 1603, so that the rotation movements of the two rollers are also synchronous; when the two roller sets are attached to the outer circumferential surface of the steel drum 22 and rotate the steel drum 22, the driving force for rotating the steel drum 22 is provided by the first roller set 16, and the second roller set 17 plays a role of assisting the rotation of the steel drum 22 so as to ensure the rotation stability of the steel drum 22.

The guide wheel 1605 is fixed to the mount 12 to which the first roller set 16 is mounted, and the guide wheel 1605 is rotatable for stabilizing the movement of the timing belt 1603.

Four rollers in the first roller group 16 and the second roller group 17 are rotatably mounted with the two mounting seats 12 through bearings.

The wire rail 2 is positioned between the two guide blocks 7, the bottom of each guide block 7 is provided with a second sliding block 20 in a matched mode, the second sliding block 20 is provided with a second sliding rail 21 in a matched mode, and the second sliding rail 21 is arranged at the top of the second mounting plate 8; the linear rail 2 is provided with a second air cylinder 19 in a matched mode, the output end of the second air cylinder 19 is connected with the second mounting plate 8, and the second air cylinder 19 drives the second mounting plate 8 to linearly move along a second sliding rail 21; the arrangement direction of the second slide rail 21 is parallel to the length direction of the wire rail 2. The second cylinder 19 is used to adjust the mounting position of the second mounting plate 8 on the wire rail 2 to match the different types of steel drums 22, due to deviations in the bung position of the different types of steel drums 22.

The working process of the utility model is as follows:

placing the steel drum 22 to be processed at a corresponding position on the top of the wire rail 2;

the first cylinder 9 stretches out to enable the rotary table 10 to rotate anticlockwise, the two mounting seats 12 are driven by the two transmission shafts 11 to do opposite linear motions simultaneously, so that the first roller group 16 and the second roller group 17 are close to the steel drum 22 simultaneously, the first cylinder 9 stops stretching until being attached to the outer circumferential surface of the steel drum 22, and the two roller groups are attached to the outer circumferential surface of the steel drum 22 to also play a role in centering the steel drum 22;

the centralizing cylinder 3 stretches out, and the pressure plate 604 is driven to move downwards through the first connecting plate 601, the second connecting plate 602 and the connecting shaft 605 until the centralizing cylinder 3 is attached to the top of the steel drum 22;

then, the servo motor 18 is started, the driving roller 1601 and the synchronous belt 1603 drive the first driven roller 1602 to rotate, so as to drive the steel drum 22 to rotate, and the two second driven rollers 1701 ensure the motion stability of the steel drum 22;

during the rotation of the steel drum 22, the detection sensor 5 detects the bung hole of the steel drum 22 in real time, when the detection sensor 5 detects the bung hole position of the steel drum 22, the servo motor 18 stops, and simultaneously the first roller group 16 and the second roller group 17 stop rotating, and the steel drum 22 stops rotating;

subsequently, the first air cylinder 9 is retracted, the rotary table 10 rotates anticlockwise, the transmission shaft 11 drives the two mounting seats 12 to do separated linear motion along the first sliding rail 15, so that the first roller group 16 and the second roller group 17 are driven to do separated linear motion until the first roller group and the second roller group return to the original positions, and meanwhile, the righting air cylinder 3 is retracted, and the pressure plate 604 is driven to ascend to the original positions;

after the rotary positioning device finds the bung hole of the steel drum 22, the steel drum 22 is conveyed to a subsequent station along the length direction of the line rail 2 for bung installation.

When the position of the second mounting plate 8 needs to be adjusted through the second air cylinder 19, the threaded connection piece between the guide block 7 and the wire rail 2 is firstly detached, and then the second air cylinder 19 is extended or retracted, so that the second mounting plate 8 moves linearly along the second sliding rail 21, the mounting position of the second mounting plate 8 on the wire rail 2 is adjusted, and in the moving process of the second mounting plate 8, the two guide blocks 7 play a guiding role.

The utility model can effectively limit the freedom degree of the steel drum 22 in the vertical direction by arranging the pressure plate 604, and can effectively prevent the problem of shaking and shifting of the steel drum 22 in the rotating process by arranging the two roller groups, thereby improving the detection accuracy of the detection sensor 5 and effectively improving the processing efficiency of the rotary positioning device.

The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.

Claims

1. The utility model provides a rotary positioning device, includes mounting frame (1), the bottom of mounting frame (1) is provided with wire rail (2) that are used for transporting steel drum (22), its characterized in that: the device is characterized in that a righting cylinder (3) is mounted on the top of the mounting frame (1) in a matched mode, the output end of the righting cylinder (3) is connected with a righting mechanism (6), a first mounting plate (4) is mounted on the middle of the righting mechanism (6) in a matched mode, a detection sensor (5) is mounted on the bottom of the first mounting plate (4) in a matched mode, the righting cylinder (3) drives the righting mechanism (6) to conduct ascending or descending linear motion, and therefore the righting mechanism (6) is attached to or far away from the top of the steel drum (22) so that the degree of freedom of the steel drum (22) in the horizontal direction is limited;

the wire rail is characterized in that a second mounting plate (8) is mounted at the bottom of the wire rail (2) in a matched manner, square grooves (13) which are symmetrically arranged are formed in the end face of the second mounting plate (8), a first air cylinder (9) is mounted at the bottom of the second mounting plate (8) in a matched manner, a rotary table (10) is connected to the output end of the first air cylinder (9), the rotary table (10) is rotatably mounted at the center position of the bottom of the second mounting plate (8), transmission shafts (11) which are symmetrically arranged are mounted at the bottom of the rotary table (10), mounting seats (12) are symmetrically mounted at the ends of the two transmission shafts (11), two mounting seats (12) are mounted at the two ends of the top of the second mounting plate (8) through corresponding square grooves (13), a first sliding block (14) is mounted at the bottom of a single mounting seat (12) in a matched manner, and the first sliding block (14) is mounted with a first sliding rail (15) mounted at the top of the second mounting plate (8).

The top of one mounting seat (12) is provided with a first roller group (16) in a matched manner, the first roller group (16) is connected with the output end of a servo motor (18), the top of the other mounting seat (12) is provided with a second roller group (17) in a matched manner, the top of a second mounting plate (8) between the two mounting seats (12) is provided with symmetrically arranged guide blocks (7) in a matched manner, and the second mounting plate (8) is arranged with a wire rail (2) in a matched manner through the two guide blocks (7);

the first cylinder (9) rotates through the driving turntable (10), so that the transmission shaft (11) drives the two mounting seats (12) to do opposite or opposite linear motion along the first sliding rail (15), the first roller group (16) and the second roller group (17) are attached to or away from the outer circumferential surface of the steel drum (22), when the first roller group (16) is attached to the outer circumferential surface of the steel drum (22), the servo motor (18) drives the first roller group (16) to rotate so as to drive the steel drum (22) to rotate, and meanwhile, the detection sensor (5) detects the position of a bunghole of the steel drum (22).

2. A rotary positioning device as set forth in claim 1, wherein: the structure of the righting mechanism (6) is as follows: including first connecting plate (601) of being connected with righting cylinder (3) output, the bottom of first connecting plate (601) is installed through several spring plunger (603) and second connecting plate (602) interval, and connecting axle (605) are installed in the central point of second connecting plate (602) bottom put cooperation, cooperation is installed on the outer periphery of connecting axle (605) pressure disk (604), the bottom of pressure disk (604) corresponds with the top shape of steel drum (22).

3. A rotary positioning device as set forth in claim 2, wherein: the top of pressure disk (604) is provided with axle sleeve (606), and pressure disk (604) are installed through axle sleeve (606) and connecting axle (605) cooperation.

4. A rotary positioning device as claimed in claim 3, wherein: the connecting shaft (605) penetrates through a through hole in the middle of the shaft sleeve (606) and extends to the outside of the shaft sleeve (606), and the bottom surface of the connecting shaft (605) is matched with the first mounting plate (4).

5. A rotary positioning device as set forth in claim 1, wherein: the first roller group (16) has the structure that: including installing initiative gyro wheel (1601) and first driven gyro wheel (1602) at mount pad (12) top, the output and the servo motor (18) of initiative gyro wheel (1601) are connected, cooperation between initiative gyro wheel (1601) and first driven gyro wheel (1602) is installed hold-in range (1603), initiative gyro wheel (1601) and first driven gyro wheel (1602) pass through drive wheel (1604) and hold-in range (1603) cooperation installation, servo motor (18) drive initiative gyro wheel (1601) are rotatory, initiative gyro wheel (1601) drive first driven gyro wheel (1602) through hold-in range (1603).

6. A rotary positioning device as set forth in claim 5, wherein: the output end of the servo motor (18) is connected with the driving roller (1601) through a bevel gear transmission mechanism.

7. A rotary positioning device as set forth in claim 5, wherein: a guide wheel (1605) is mounted beside the synchronous belt (1603) in a matched manner.

8. A rotary positioning device as set forth in claim 5, wherein: the second roller group (17) comprises two second driven rollers (1701) arranged at the top of the other mounting seat (12), and the two second driven rollers (1701), the driving roller (1601) and the first driven roller (1602) are symmetrically arranged at four corners of the top of the second mounting plate (8).

9. A rotary positioning device as set forth in claim 1, wherein: the wire rail (2) is positioned between the two guide blocks (7), a second sliding block (20) is arranged at the bottom of the single guide block (7) in a matched mode, the second sliding block (20) is arranged in a matched mode with a second sliding rail (21), and the second sliding rail (21) is arranged at the top of the second mounting plate (8);

the wire rail (2) is provided with a second air cylinder (19) in a matched mode, the output end of the second air cylinder (19) is connected with a second mounting plate (8), and the second air cylinder (19) drives the second mounting plate (8) to do linear motion along a second sliding rail (21).

10. A rotary positioning device as recited in claim 9, wherein: the arrangement direction of the second sliding rail (21) is parallel to the length direction of the linear rail (2).