CN113523852A

CN113523852A - Intelligent processing system

Info

Publication number: CN113523852A
Application number: CN202110810304.4A
Authority: CN
Inventors: 王雨; 申艳婷; 陈中华; 索利巧; 杨晨星; 张锴轩
Original assignee: Zhengzhou Railway Vocational and Technical College
Current assignee: Zhengzhou Railway Vocational and Technical College
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-10-22
Anticipated expiration: 2041-07-19
Also published as: CN113523852B

Abstract

An intelligent processing system comprises two supporting mechanisms which are arranged in a mirror symmetry mode and can adjust the distance between the two supporting mechanisms for clamping a workpiece, and each supporting mechanism comprises a static part which can be independently started and used for supporting a movable part and a static part which can be independently started. The supporting mechanism comprises a protecting cylinder with a right/lower opening and a supporting frame for supporting and fixing the protecting cylinder; the movable part comprises a roller seat, a movable roller and an electric cylinder I, wherein the movable roller is rotatably connected to the upper part of the roller seat, and the electric cylinder I is used for driving the roller seat to realize lifting; the static part comprises a positioning roller and an electric cylinder II for driving the positioning roller to lift; wherein electronic jar I and electronic jar II are all installed on the support frame, the axis of activity roller, registration roller and the axis and the level/perpendicular of a protection section of thick bamboo are parallel, and activity roller and the setting of registration roller a left and right sides just can be located the inside and the below of a protection section of thick bamboo through going up and down. The large-scale columnar workpiece can be flexibly supported and adjusted.

Description

Intelligent processing system

Technical Field

The invention relates to industrial processing, in particular to an intelligent processing system.

Background

For large columnar workpieces, a crane or other hoisting equipment is usually adopted to hoist, turn over and position and clamp the large workpieces through a hoisting tool on a production site, but the operation is troublesome, the time consumption is long, and even accidents can be caused. Because the size of the large-sized workpiece is also larger, manual pushing and overturning are needed in the operation, and the working strength and difficulty are increased. Obviously, the hoisting tool for machining large-sized workpieces in the prior art has the problems of easiness in causing accidents, difficulty in machining, high working strength and the like.

Disclosure of Invention

The invention provides an intelligent processing system, aiming at flexibly supporting and adjusting a large columnar workpiece.

The above purpose is realized by the following technical scheme:

an intelligent processing system comprises two supporting mechanisms which are arranged in a mirror symmetry mode and can adjust the distance between the two supporting mechanisms for clamping a workpiece, and each supporting mechanism comprises a static part which can be independently started and used for supporting a movable part and a static part which can be independently started.

The supporting mechanism comprises a protecting cylinder with a right/lower opening and a supporting frame for supporting and fixing the protecting cylinder; the movable part comprises a roller seat, a movable roller and an electric cylinder I, wherein the movable roller is rotatably connected to the upper part of the roller seat, and the electric cylinder I is used for driving the roller seat to realize lifting; the static part comprises a positioning roller and an electric cylinder II for driving the positioning roller to lift; wherein electronic jar I and electronic jar II are all installed on the support frame, the axis of activity roller, registration roller and the axis and the level/perpendicular of a protection section of thick bamboo are parallel, and activity roller and the setting of registration roller a left and right sides just can be located the inside and the below of a protection section of thick bamboo through going up and down.

Drawings

FIG. 1 shows a monolithic structure;

FIG. 2 shows a protective sleeve and a ring platform;

FIG. 3 shows a support mechanism;

FIG. 4 shows a partial structure of a support mechanism;

FIG. 5 shows a frame II, a rail I and a rail II;

FIG. 6 shows a speed reducing motor, a clamp spring, an auxiliary wheel, a reset rod I, a compression spring I and a limiting part I;

FIG. 7 shows the mounting of the wheel carrier and spacing wheels;

FIG. 8 shows a frame II, a reset rod II, a bending plate, a compression spring II and a limiting part II;

figure 9 shows the inner tube, connector i, outer tube and connector ii.

Detailed Description

Referring to fig. 1 to 4, the system includes a supporting mechanism, the supporting mechanism includes a protection cylinder 21, a supporting frame 23, a movable portion and a static portion, the right side of the protection cylinder 21 is open, openings are also provided at the upper and lower ends of the protection cylinder 21, the protection cylinder 21 is fixedly connected to the supporting frame 23, the movable portion includes an electric cylinder i 24, a roller seat 25 and a movable roller 26, the movable end of the electric cylinder i 24 is disposed upward, the roller seat 25 is fixedly connected to the movable end of the electric cylinder i 24, two movable rollers 26 are disposed at the same height, the two movable rollers 26 are rotatably connected to the roller seat 25 in tandem, the electric cylinder i 24 is fixedly connected to the lower end of the supporting frame 23, the movable end of the electric cylinder i 24 passes through the supporting frame 23 from bottom to top, the static portion includes an electric cylinder ii 27 and a positioning roller 28, the electric cylinder ii 27 is fixedly connected to the lower end of the supporting frame 23, the movable end of the electric cylinder ii 27 passes through the supporting frame 23 from bottom to top, the positioning roller 28 is fixedly connected to the electric cylinder ii 27, and the axes of the movable roller 26, the positioning roller 28 and the protective cylinder 21 are parallel to a virtual horizontal plane and parallel to a virtual vertical plane. The left and right mirror images of the supporting mechanism are symmetrically provided with two supporting mechanisms. The movable roller 26 in each support mechanism is located outside the positioning roller 28, inside between the adjacent support mechanisms and outside between the remote support mechanisms.

In the initial state, the movable roller 26 is located below the registration roller 28, and the axis of the registration roller 28 is preferably located at the bottom of the virtual circle on the circumferential wall surface of the protection cylinder 21. When processing post, the large-scale work piece of pipe class, utilize the hoist to hoist the work piece earlier to two protection section of thick bamboos 21 directly over, because of protection section of thick bamboos 21 is the upper shed, make the hoist transfer the work piece, descend the work piece to on the registration roller 28 of the left and right sides, two registration rollers 28 of unilateral are convenient for the work piece that the bearing diameter is different, the hoist breaks away from the work piece, protection section of thick bamboo 21 can prevent that the work piece accident from dropping, avoid the work piece damage or avoid the work piece to drop and hinder people and other properties, heavier work piece utilizes the static friction to be convenient for keep motionless on unable pivoted registration roller 28, be convenient for cooperate anchor clamps to carry out fixed processing. The distance between the two supporting mechanisms is adjusted so as to support workpieces with different lengths. The movable roller 26 is raised by activating the electric cylinder i 24, and when the movable roller 26 is flush with the registration roller 28, the registration roller 28 is lowered so that the movable roller 26 takes over the registration roller 28. Then, the rotation of the workpiece on the movable roller 26 can be facilitated to facilitate the flexible surface processing or surface inspection.

Referring to fig. 5 to 7, the system further includes a frame i 11, a wheel rail 12, a frame ii 31, a convex rail i 32, a convex rail ii 33, a speed reducing motor 41, a snap spring 42, an auxiliary wheel 43, a reset rod i 44, a compression spring i 45, a limiting portion i 46, an electric push rod i 51, a contact portion 52, a wheel frame 61 and a limiting wheel 62, wherein the front and rear sides of the right end of the upper end of the frame i 11 are respectively fixedly connected with one wheel rail 12, the frame ii 31 is fixedly connected with the left end of the upper end of the frame i 11, the convex rail i 32 is integrally connected with the horizontal plane of the upper end of the frame ii 31, the convex rail ii 33 is fixedly connected with the left end of the frame ii 31 and is located right above the convex rail i 32, a clamping groove is arranged on an output shaft of the speed reducing motor 41, the snap spring 42 is clamped in the clamping groove, the auxiliary wheel 43 is rotatably connected with a mounting base, the mounting base is fixedly connected with the lower end of the speed reducing motor 41, the auxiliary wheel 43 is arranged to roll between the convex rail i 32 and the convex rail ii 33, the convex rail II 33 penetrates through the mounting seat, the reset rod I44 is fixedly connected to the left end of the speed reducing motor 41, the compression spring I45 is sleeved on the reset rod I44, the left end of the reset rod I44 is fixedly connected with the limiting part I46, the left end formed by the limiting part I46 is an arc end face, the output shaft of the speed reducing motor 41 penetrates through the left part of the left protection barrel 21, the right end of the clamp spring 42 abuts against the left end of the left protection barrel 21, the reset rod I44 is connected to the rack II 31 in a sliding mode, two ends of the compression spring I45 are respectively in contact with the speed reducing motor 41 and the rack II 31, and the right end of the limiting part I46 is in contact with the left end of the rack II 31; the electric push rod I51 is fixedly connected to the right end of the right side protection barrel 21, the movable end of the electric push rod I51 penetrates through the protection barrel 21 from right to left, the contact part 52 is rotatably connected to the movable end of the electric push rod I51, the wheel carrier 61 is fixedly connected to the front end and the rear end of the lower end of the right side support frame 23, and the left side and the right side of each wheel carrier 61 are respectively rotatably connected with one limiting wheel 62. The front limiting wheel 62 rolls in the front wheel rail 12, and the rear limiting wheel 62 rolls in the rear wheel rail 12. The inner end of the wheel rail 12 is provided with a convex part for being clamped at the corresponding inner end of the wheel rail 12. The outer end of the protective cylinder 21 is integrally connected with a ring platform 22.

When the rotation of the workpiece needs to be assisted, the height of the movable roller 26 is adjusted, so that the movable roller 26 supports the workpiece to be lifted, the axis of the workpiece is overlapped with the axis of the protective cylinder 21, the contact part 52 clamps the workpiece with the right end of the output shaft of the speed reduction motor 41, the speed reduction motor 41 is started to drive the workpiece to rotate, and at the moment, the movable roller 26 rotates along with the workpiece. The mode clamping force of adjusting the workpiece is small, and scratch to the workpiece caused by holding and clamping is avoided.

The system further comprises an inner pipe 81, a connecting piece I82, an outer pipe 83 and a connecting piece II 84, the left end of the inner pipe 81 is fixedly connected with the connecting piece I82, the connecting piece I82 is fixedly connected onto the mounting seat, the connecting piece I82 is slidably connected onto the frame II 31, the inner pipe 81 is slidably connected into the outer pipe 83, a plurality of holes I and a plurality of holes II are formed in the inner pipe 81 and the outer pipe 83 respectively, the inner pipe 81 and the outer pipe 83 are fixed by penetrating through any one of the holes I and the holes II through a bolt and nut assembly, the connecting piece II 84 is fixedly connected with the right end of the outer pipe 83, and the connecting piece II 84 is fixedly connected with the right supporting frame 23.

Referring to fig. 9, when the workpiece is lifted by the lifting appliance, the workpiece is located between the two protection cylinders 21, then the workpiece enters the protection cylinders 21 from right to left to push the output shaft of the speed reduction motor 41 to move leftwards, so that the speed reduction motor 41, the mounting seat and the reset rod i 44 move leftwards, the connecting piece i 82 moves leftwards, the protection cylinder 21 located on the right side moves leftwards to cover the right side of the workpiece, meanwhile, the contact part 52 abuts against the right side of the workpiece, and finally, the position of the speed reduction motor 41 is fixed, so that the workpiece can be automatically covered and buckled at two ends of the workpiece and fixed when entering the protection cylinder 21. The total length of the inner pipe 81 and the outer pipe 83 is adjustable to adapt to workpieces with different lengths, and the electric push rod I51 is used for driving the contact part 52 to move left and right, so that fine adjustment, compensation fixation or adjustment fixation force can be realized.

Referring to fig. 8, the system further includes a frame ii 71, two reset rods ii 72, a bending plate 73, a compression spring ii 74 and a limiting portion ii 75, the upper portion of the frame ii 71 is slidably connected with the two reset rods ii 72, the bending plate 73 is fixedly connected to the lower end of the reset rod ii 72, the compression spring ii 74 is sleeved on the reset rod ii 72, two ends of the compression spring ii 74 are respectively contacted with the upper portion of the frame ii 71 and the bending plate 73, and the limiting portion ii 75 is fixedly connected to the upper end of the reset rod ii 72.

When the speed reducing motor 41 moves leftwards, the limiting part I46 moves leftwards, the bending plate 73 is provided with an inclined plane which is low at the left side and high at the right side, the limiting part I46 pushes the inclined plane to enable the bending plate 73 to rise until the bottom of the bending plate 73 is clamped at the right end of the limiting part I46, and the speed reducing motor 41 is positioned. Then, the cylindrical workpiece with a large weight can be subjected to double-end buckling cover and clamping positioning only by being hoisted into the protection barrel 21 positioned on the left side, or can be converted into a mode of flexibly adjusting rotation. By inputting workpiece data into the computer platform in advance, the computer platform generates commands to control the system to effect the movement of the movable rollers 26,

The fine adjustment of the registration roller 28 and the contact portion 52 achieves an intelligent fit.

Claims

1. An intelligent processing system comprises two supporting mechanisms which are arranged in a mirror symmetry mode and can adjust the distance between the two supporting mechanisms for clamping a workpiece, and each supporting mechanism comprises a static part which can be independently started and used for supporting a movable part and a static part which can be independently started.

2. The system according to claim 1, wherein the support mechanism comprises a right/lower open protection cylinder (21), and a support frame (23) to support the fixed protection cylinder (21); the movable part comprises a roller seat (25), a movable roller (26) rotatably connected to the upper part of the roller seat (25), and an electric cylinder I (24) for driving the roller seat (25) to lift; the static part comprises a positioning roller (28) and an electric cylinder II (27) for driving the positioning roller (28) to lift; wherein electronic jar I (24) and electronic jar II (27) are all installed on support frame (23), the axis of activity roller (26), registration roller (28) and the axis of a protection section of thick bamboo (21) are parallel with level/perpendicular face, and activity roller (26) and registration roller (28) one left side right side set up and can be located the inside and the below of a protection section of thick bamboo (21) through going up and down.

The system comprises a supporting mechanism, the supporting mechanism comprises a protection cylinder (21), a supporting frame (23), a movable part and a static part, the right side of the protection cylinder (21) is opened, openings are also arranged at the upper end and the lower end of the protection cylinder (21), the protection cylinder (21) is fixedly connected on the supporting frame (23), the movable part comprises an electric cylinder I (24), a roller seat (25) and movable rollers (26), the movable end of the electric cylinder I (24) is arranged upwards, the roller seat (25) is fixedly connected at the movable end of the electric cylinder I (24), the movable rollers (26) are arranged in two same height, the two movable rollers (26) are connected on the roller seat (25) in a tandem way, the electric cylinder I (24) is fixedly connected at the lower end of the supporting frame (23), the movable end of the electric cylinder I (24) passes through the supporting frame (23) from bottom to top, the static part comprises an electric cylinder II (27) and a positioning roller (28), the electric cylinder II (27) is fixedly connected to the lower end of the support frame (23), the movable end of the electric cylinder II (27) penetrates through the support frame (23) from bottom to top, the positioning roller (28) is fixedly connected to the electric cylinder II (27), and the axes of the movable roller (26), the positioning roller (28) and the protection cylinder (21) are parallel to a virtual horizontal plane and parallel to a virtual vertical plane. The left and right mirror images of the supporting mechanism are symmetrically provided with two supporting mechanisms. The movable roller (26) in each support mechanism is positioned on the outer side of the positioning roller (28), the position between the adjacent two support mechanisms is inner, and the position between the far away two support mechanisms is outer.

In the initial state, the movable roller (26) is positioned below the positioning roller (28), and the axis of the positioning roller (28) is preferably positioned at the bottom of the virtual circle on the circumferential wall surface of the protection cylinder (21). When processing post, the large-scale work piece of pipe class, utilize the hoist to hoist the work piece to two protection section of thick bamboos (21) directly over earlier, because of protection section of thick bamboos (21) are the upper shed, make the hoist transfer the work piece, descend the work piece to on the registration roller (28) of the left and right sides, two registration roller (28) of unilateral are convenient for the work piece that the bearing diameter is different, the hoist breaks away from the work piece, protection section of thick bamboo (21) can prevent that the work piece accident from dropping, avoid the work piece damage or avoid the work piece to drop and hinder people and other properties, heavier work piece utilizes static friction to be convenient for keep motionless on unable pivoted registration roller (28), be convenient for cooperate anchor clamps to carry out fixed processing. The distance between the two supporting mechanisms is adjusted so as to support workpieces with different lengths. The electric cylinder I (24) is started to drive the movable roller (26) to rise, and when the movable roller (26) is level with the positioning roller (28), the positioning roller (28) is lowered, so that the movable roller (26) takes over the positioning roller (28). Then, the workpiece can be facilitated to spin on the movable roller (26) for flexible surface machining or surface inspection.

3. System according to claim 2, wherein said protective cylinder (21) is open.

4. The system according to claim 3, further comprising a frame I (11) and two wheel rails (12) fixed at the right side of the upper end of the frame I (11) and distributed in the front and back direction, a rack II (31) fixedly connected on the left side of the upper end of the rack I (11), and a convex rail I (32) fixedly connected on the rack II (31), and a convex rail II (33) which is fixedly connected with the left end of the frame II (31) and is positioned right above the convex rail I (32), a speed reducing motor (41), and a clamp spring (42) arranged on an output shaft of the speed reducing motor (41), an auxiliary wheel (43) rotationally connected below the speed reducing motor (41), and two resetting rods I (44) fixedly connected at the left end of the speed reducing motor (41), a compression spring I (45) sleeved on the two reset rods I (44) and a limiting part I (46) fixedly connected to the left end of the reset rods I (44); the output shaft of the speed reducing motor (41) is connected to the protection barrel (21) on the left side in a sliding mode, the outer end of the protection barrel (21) is integrally connected with the annular table (22), the clamp spring (42) is in contact with the annular table (22) on the left side, the auxiliary wheel (43) is provided with a clamping groove used for achieving linear rolling between the convex rail I (32) and the convex rail II (33), the reset rod I (44) is connected to the left end of the rack II (31) in a sliding mode, and the right end of the limiting portion I (46) is in contact with the left end of the rack II (31);

the system also comprises wheel frames (61) fixedly connected to the right supporting frame (23), the wheel frames (61) are distributed front and back, the left side and the right side of each wheel frame (61) are respectively connected with a limiting wheel (62) in a rotating mode, and the limiting wheels (62) roll on the corresponding wheel rails (12).

The system also comprises a rack I (11), wheel rails (12), a rack II (31), a convex rail I (32), a convex rail II (33), a speed reducing motor (41), clamp springs (42), auxiliary wheels (43), a reset rod I (44), a compression spring I (45), a limiting part I (46), an electric push rod I (51), a contact part (52), a wheel carrier (61) and a limiting wheel (62), wherein the front side and the rear side of the right end of the upper end of the rack I (11) are fixedly connected with the wheel rails (12), the rack II (31) is fixedly connected at the left end of the upper end of the rack I (11), the convex rail I (32) is integrally connected on the horizontal plane of the upper end of the rack II (31), the convex rail II (33) is fixedly connected at the left end of the rack II (31) and is positioned right above the convex rail I (32), a clamping groove is arranged on an output shaft of the speed reducing motor (41), the clamp springs (42) are fixedly clamped in the clamping groove, the auxiliary wheels (43) are connected on the mounting seat through rotation, the mounting seat is fixedly connected to the lower end of the speed reducing motor (41), a clamping groove is formed in the auxiliary wheel (43) and used for rolling between the convex rail I (32) and the convex rail II (33), the convex rail II (33) penetrates through the mounting seat, the reset rod I (44) is fixedly connected to the left end of the speed reducing motor (41), the compression spring I (45) is sleeved on the reset rod I (44), the left end of the reset rod I (44) is fixedly connected with the limiting portion I (46), the left end formed by the limiting portion I (46) is an arc end face, the output shaft of the speed reducing motor (41) penetrates through the left portion of the left protection barrel (21), the right end of the clamp spring (42) abuts against the left end of the left protection barrel (21), the reset rod I (44) is slidably connected to the rack II (31), two ends of the compression spring I (45) are respectively in contact with the speed reducing motor (41) and the rack II (31), and the right end of the limiting portion I (46) is in contact with the left end of the rack II (31); the electric push rod I (51) is fixedly connected to the right end of the right side protection barrel (21), the movable end of the electric push rod I (51) penetrates through the protection barrel (21) from right to left, the contact part (52) is rotatably connected to the movable end of the electric push rod I (51), the wheel frames (61) are fixedly connected to the front end and the rear end of the lower end of the right side supporting frame (23), and the left side and the right side of each wheel frame (61) are rotatably connected with one limiting wheel (62). The limiting wheel (62) positioned on the front side rolls in the wheel rail (12) positioned on the front side, and the limiting wheel (62) positioned on the rear side rolls in the wheel rail (12) positioned on the rear side. The inner end of the wheel rail (12) is provided with a convex part for being clamped at the corresponding inner end of the wheel rail (12). The outer end of the protective cylinder (21) is integrally connected with a ring platform (22).

When the workpiece rotation needs to be assisted, the height of the movable roller (26) is adjusted, so that the movable roller (26) supports the workpiece to be lifted, the axis of the workpiece is overlapped with the axis of the protective cylinder (21), the contact part (52) clamps the workpiece with the right end of the output shaft of the speed reducing motor (41), the speed reducing motor (41) is started to drive the workpiece to rotate, and the movable roller (26) rotates along with the workpiece. The mode clamping force of adjusting the workpiece is small, and scratch to the workpiece caused by holding and clamping is avoided.

5. The system according to claim 4, further comprising a connecting member I (82) slidably connected to the left end of the frame II (31) and fixedly connected to the lower portion of the speed reduction motor (41), an outer tube (82) fixedly connected to the connecting member I (82), an inner tube (81) connected to the outer tube (82), and a connecting member II (84) fixedly connected to the inner tube (81) and the right supporting frame (23).

The system further comprises an inner pipe (81), a connecting piece I (82), an outer pipe (83) and a connecting piece II (84), the left end of the inner pipe (81) is fixedly connected with the connecting piece I (82), the connecting piece I (82) is fixedly connected on the mounting seat, the connecting piece I (82) is slidably connected onto the rack II (31), the inner pipe (81) is slidably connected into the outer pipe (83), the inner pipe (81) and the outer pipe (83) are respectively provided with a plurality of holes I and a plurality of holes II, the inner pipe (81) and the outer pipe (83) are fixed by penetrating through any one of the holes I and the holes II through a bolt and nut assembly, the connecting piece II (84) is fixedly connected with the right end of the outer pipe (83), and the connecting piece II (84) is fixedly connected with a support frame (23) located on the right side.

When the workpiece is lifted by the lifting appliance, the workpiece is located between the two protection cylinders (21), then the workpiece enters the protection cylinders (21) from right to left to push the output shaft of the speed reducing motor (41) to move leftwards, the speed reducing motor (41), the mounting seat and the reset rod I (44) move leftwards, the connecting piece I (82) moves leftwards, the protection cylinders (21) on the right side move leftwards to cover the right side of the workpiece, meanwhile, the contact parts (52) are abutted to the right side of the workpiece, and finally the position of the speed reducing motor (41) is fixed, so that the two ends of the workpiece are automatically covered and buckled when the workpiece enters the protection cylinders (21) and the workpiece is fixed. The total length of the inner pipe (81) and the outer pipe (83) is adjustable to adapt to workpieces with different lengths, and the electric push rod I (51) is used for driving the contact part (52) to move left and right, so that fine adjustment, compensation fixation or fixed force adjustment can be realized.

6. The system of claim 5, wherein the inner tube (81) is provided with a plurality of holes I, the outer tube (83) is provided with at least one hole II, and the inner tube (81) and the outer tube (83) are fixed by a bolt and nut assembly passing through any one of the holes I and II.

7. The system as claimed in claim 6, further comprising an electric push rod I (51) arranged on the right support frame (23), and a contact part (52) rotatably connected to the movable end of the electric push rod I (51), wherein the contact part (52) is arranged in the right support frame (23).

8. The system as claimed in any one of claims 4 to 7, further comprising a frame II (71) arranged at the left side of the frame I (11), a reset rod II (72) connected to the upper part of the frame II (71) in a sliding manner, a bending plate (73) fixedly connected to the lower end of the reset rod II (72), a compression spring II (74) sleeved on the reset rod II (72), and a limiting part II (75) fixedly connected to the upper end of the reset rod II (72); the compression spring II (74) is located between the upper portion of the machine frame II (71) and the bending plate (73), the left portion of the limiting portion I (46) is in an arc shape, and the limiting portion I (46) moves leftwards and can extrude the bending plate (73) to move upwards.

The system further comprises a rack II (71), two reset rods II (72), a bending plate (73), a compression spring II (74) and a limiting part II (75), the upper portion of the rack II (71) is connected with the two reset rods II (72) in a sliding mode, the bending plate (73) is fixedly connected to the lower end of the reset rod II (72), the compression spring II (74) is sleeved on the reset rod II (72), two ends of the compression spring II (74) are respectively in contact with the upper portion of the rack II (71) and the bending plate (73), and the limiting part II (75) is fixedly connected to the upper end of the reset rod II (72).

When gear motor (41) moved left, spacing portion I (46) moved left, and bending plate (73) have the low inclined plane of right side height in a left side, and spacing portion I (46) promote bending plate (73) risees on the inclined plane, and the bottom card of bending plate (73) is at the right-hand member of spacing portion I (46) until, realizes gear motor (41)'s location. Then, the cylindrical workpiece with larger weight can be covered by the double-end buckle and clamped and positioned only by being hoisted into the protection barrel (21) positioned on the left side, or can be converted into a mode of flexibly adjusting rotation.

9. The system of claim 2, wherein the outer surface of the positioning roller (28) is provided with an annular non-slip texture.

10. The system according to claim 4, wherein a rubber pad is fixedly connected to the right end of the output shaft of the speed reduction motor (41).