CN114558955A

CN114558955A - Full-automatic precision straightening device with stepless adjustment function

Info

Publication number: CN114558955A
Application number: CN202210200838.XA
Authority: CN
Inventors: 刘文平
Original assignee: Dongguan Acupuncture Technology Co ltd
Current assignee: Dongguan Acupuncture Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-05-31

Abstract

The invention discloses an electrodeless regulation full-automatic precise straightening device which comprises a rotating body, a correction wheel set, a movable limiting part and a motion conversion device, wherein the correction wheel set is concentrically arranged in the rotating body, the movable limiting part synchronously drives the correction wheel set, and the motion conversion device drives the movable limiting part. The correcting wheel set is provided with a rolling curved surface which is used for being matched and abutted with the cylindrical surface of the metal wire, the movable limiting part is provided with a track surface for limiting the motion of the correcting wheel set, and the motion conversion device is provided with a device for converting the rotary motion into the linear reciprocating motion. The invention has the advantages of exquisite structural design, more reasonable control principle, structural configuration and operation mode and high automation degree. Has the advantages that: 1. the surface of the straightened metal wire is smooth and has no problem of appearance damage; 2. the device is beneficial to the miniaturization of the volume, and is particularly suitable for simultaneously straightening a plurality of metal wires by using a plurality of same devices. 3. The motion conversion device is used for providing stable straightening moment, realizing the precise compensation of the moment in the straightening process and meeting the modern production standard.

Description

Full-automatic precision straightening device with stepless adjustment function

Technical Field

The invention relates to the technical field of automation equipment, in particular to an electrodeless regulation full-automatic precise straightening device.

Background

In the needle making industry, coiled steel wires for needle making need to be straightened, and are cut according to requirements after being straightened, and then enter the next processing procedure. In the current straightening process, the straightening and cutting machine is usually used for processing. The prior art of the rotary hub straightener and the horizontal and vertical roller composite straightener is limited in use effect due to the phenomena of forced torsion, deformation, coiling and wire breakage of wire rods/steel wires in the production process. Specific existing problems are as follows: in the straightening process, along with the increase of load (unwinding process), the acting force (such as pulling force) borne by the wire rod is increased, so that the wire diameter of the wire rod is easy to change; and the straightening contact part is easy to damage the outer surface of the wire. In summary, there is no ideal solution in the industry as to how to maintain a certain straightening clamping force and straightening torque on the wire and how to solve the process requirement. Further problems are found in: the wire needs to maintain certain straightening clamping force and straightening torque, and the wire needs to be adjusted once and then works correctly and repeatedly, so that the working efficiency of equipment is restricted, and the process effect is directly influenced.

Disclosure of Invention

Aiming at the defects, the invention aims to provide an electrodeless adjustment full-automatic precise straightening device which is convenient to use and is used for straightening wires.

The invention provides a full-automatic precise straightening device without polar adjustment, which is formed into a straightening device of a metal wire for needle making and comprises a rotating body, at least one group of correcting wheel sets which are arranged in the rotating body and are used for concentrically rotating by taking the central axis of the rotating body as a rotating axis, movable limiting parts which are arranged in the rotating body and are used for rotating along with the rotating body in the same direction, and the movable limiting parts are synchronously connected with the correcting wheel sets in a transmission way and a motion conversion device which is in driving connection with the movable limiting parts; the metal wire penetrates through the end opening of the rotating body along the central axis, the correcting wheel set comprises a sliding block and a rolling wheel arranged on the sliding block, the sliding blocks are parallel to each other and are movably arranged at preset positions in the rotating body in an upright state, and both ends of the sliding block are provided with end surfaces for sliding and abutting, the rolling wheel is arranged in the rotating body along the central axis through the sliding block, the rolling wheel is provided with a rolling curved surface which is matched and abutted with the cylindrical surface of the metal wire, the movable limiting parts are strip-shaped bodies which are symmetrically arranged, the strip-shaped bodies are provided with mutually matched track surfaces, the end surfaces are movably abutted against the track surfaces, the track surface is a smooth curved surface used for synchronously adjusting the relative position of the adjacent sliding blocks, and the rolling curved surfaces are synchronously close to or far away from the central axis; the motion conversion device is provided with a rotary motion conversion part and a power output part for providing stable torque for the rotary motion conversion part, wherein the rotary motion conversion part is used for converting rotary motion into linear reciprocating motion, driving the strip-shaped body to do the linear reciprocating motion and enabling pushing pressure transmitted to the sliding block to be stable pressure.

As a further elaboration of the invention:

in the above technical scheme, the rotator has the body, sets up two at least spacing holes in the body, sets up in the body and is the spout structure of mutual symmetry to and set up in the both ends of body and follow the dabber of the reverse extension of the central axis, the end opening runs through the rotation axis of dabber, the body is hollow cylinder, is provided with a plurality of hollow out construction that run through the body along the radial of body, spacing hole set up in preset position, for the intercommunication the trompil of the inner space of spout structure, spacing hole is followed the direction of central axis is arranged, the spout structure is for supplying the bar sliding installation constitutes the spacing recess of linear motion in it, the tank bottom of recess is provided with avoids the discontinuous plane of the drill way position of trompil, discontinuous plane all is in same plane.

In the above technical scheme, the rotator is provided with at least two ring bodies, the ring bodies are sleeved at the preset positions of the rotator, and the inner ring of the ring bodies is provided with through holes matched with the strip bodies in a penetrating manner.

In the above technical solution, the sliding block includes two terminal movable blocks and a plurality of middle movable blocks, both of which are formed by a rectangular body and a hollow area formed in the middle of the rectangular body, the end surface includes a first inclined surface, a second inclined surface, a third inclined surface and a fourth inclined surface, both ends of the terminal movable blocks are provided with the first inclined surface and the second inclined surface which are connected, both ends of the middle movable blocks are provided with the third inclined surface and the fourth inclined surface, and an intersecting angle of the first inclined surface and the second inclined surface is different from an intersecting angle of the third inclined surface and the fourth inclined surface; the rolling wheel is positioned in the hollow area, the axis of the rolling wheel is intersected with the central axis, and the intersection comprises an obtuse included angle with a preset angle.

In the above technical solution, the first inclined plane, the second inclined plane, the third inclined plane and the fourth inclined plane are all smooth planes, the number of the sliding blocks and the rolling wheels is equal, and is six, and the axes of two adjacent rolling wheels are all set at the same preset intersection angle; the two ends of the rectangular body penetrate through the limiting holes, and the first inclined plane, the second inclined plane, the third inclined plane and the fourth inclined plane are located in the space in the groove.

In the above technical scheme, the striatum body includes that two are equidirectional rectilinear motion's square rectangular, two square rectangular is parallel and normal phase is to setting up, the orbit face all sets up in two the relative side of square rectangular, the orbit face comprises end part and the middle section part that is connected, the end part has first direction plane, first direction inclined plane, second direction plane and locking step, the middle section part has third direction plane, second direction inclined plane, fourth direction plane and third direction inclined plane, so the crossing contained angle in first direction plane and first direction inclined plane is greater than the crossing contained angle in third direction plane and second direction inclined plane, fourth direction plane all with discontinuity plane looks slip is contradicted.

In the above technical solution, the rotational motion conversion part has a transmission positioning member, an axial force application member, a rotating shaft seat, a supporting seat and a linear motion conversion device, the transmission positioning member is integrally a ring body, an inner ring of the transmission positioning member is provided with a clamping structure for movably connecting one end of the square strip, the transmission positioning member is movably sleeved at one end of the body, the axial force application member is a disc body which seals one port of the transmission positioning member and seals the clamping structure, the axial force application member is movably sleeved on the mandrel, and is arranged on the rotating shaft seat through a bearing member, and the body is transversely installed on the corresponding supporting seat and the linear motion conversion device through the mandrel; the linear motion conversion device is provided with a mounting seat, a bearing hole, a first conversion device and a second conversion device, the bearing hole is located in the middle of the mounting seat, the first conversion device and the second conversion device are provided with a driven sprocket and a linear motion assembly which is in the same rotating axis with the driven sprocket, and one end of the linear motion assembly is in transmission connection with the rotating shaft seat.

In one embodiment of the present invention, the linear motion assembly is one of a face cam mechanism or a spiral cam mechanism.

In the above technical scheme, the power output part has a motor, a speed reducer and a gear box, a driving sprocket is arranged in the gear box, the motor drives the driving sprocket through the speed reducer and a torque amplifying gear set, and the torque amplifying gear set is installed in the gear box.

In the above technical scheme, the rotating shaft seat and the mounting seat are both provided with independent cooling liquid flow channels. The rotating shaft seat and the mounting seat are respectively merged into corresponding cooling liquid circulating systems.

Compared with the prior art, the invention has the following beneficial effects:

the invention has the advantages of exquisite structural design, more reasonable control principle, structural configuration and operation mode and high automation degree. The advantages of the utility model are as follows:

1. the surface of the straightened metal wire is smooth and has no problem of appearance damage;

2. the device is beneficial to the miniaturization of the volume, and is particularly suitable for simultaneously straightening a plurality of metal wires by using a plurality of same devices.

3. The motion conversion device is provided with a rotary motion conversion part and a power output part for providing stable torque for the rotary motion conversion part, and is used for ensuring the constant pressure at the contact part of the metal wire to be straightened and the rolling curved surface of the rolling wheel. In the operation process, the automatic detection and adjustment functions are realized, stable straightening torque is provided, the operation is simple, the use is safe and convenient, the practicability is high, and the modern production standard is met.

The invention is further described with reference to the following figures and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention.

FIG. 1 is a schematic view of the final assembly structure of the present invention.

Fig. 2 is a schematic structural view of a movable limiting part in the invention.

Fig. 3 is a schematic structural diagram of fig. 2 from another view angle.

Fig. 4 is a schematic view of the overall assembly structure of the motion conversion apparatus of the present invention.

Fig. 5 is a power output portion of the motion conversion apparatus in fig. 4.

Fig. 6 is a schematic exploded view of the present invention.

Fig. 7 is an enlarged schematic view of a portion a of fig. 6.

Fig. 8 is an enlarged structural view of a portion B of fig. 6.

Fig. 9 is a schematic view of the structure of fig. 6 from another perspective.

Detailed Description

The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from the description herein, and one skilled in the art can make similar generalizations and deductions based on the practical application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of this specific embodiment.

An infinitely adjustable fully automatic precision straightening device according to an embodiment of the invention is described in detail below with reference to the accompanying drawings. Referring to fig. 1, the overall structure of the present invention is shown. Wherein the needle-making wire (not shown) mentioned in the specification is in a coiled state before being straightened. The diameter range of the metal wire is phi 0.15 mm-phi 8.5 mm.

Referring to fig. 6 and 7, an infinitely adjustable full-automatic precise straightening device according to an embodiment of the present invention includes a rotating body 1, three sets of aligning wheel sets 2 installed in the rotating body 1 and configured to concentrically rotate with a central axis of the rotating body 1 as a rotation axis, a movable limiting member 3 installed in the rotating body 1 and configured to rotate along with the rotating body 1 in the same direction, and the movable limiting member 3 is synchronously connected to the aligning wheel sets 2 in a transmission manner, and a motion conversion device 4 drivingly connected to the movable limiting member 3. The rotating body 1 of the present embodiment is driven to rotate by a separate asynchronous motor 410 (not shown) through a belt driving assembly. The overall structure of the rotary body 1 is a hollow cylinder extending along its axis of rotation. Each group of the correcting wheel sets 2 is provided with two rolling wheels 20 which are arranged up and down and are arranged in a staggered manner, the two rolling wheels 20 are arranged at preset positions of the hollow cylinder, and are driven to synchronously vertically move up and down in operation, the moving directions of the two adjacent rolling wheels 20 are opposite, and the two rolling wheels 20 rotate in the same direction around the rotation axis of the hollow cylinder. The movable limiting part 3 is a linear motion part for driving the rolling wheel 20, and is driven by the hollow cylinder to rotate in the same direction and the same rotating axis during operation. The motion conversion device 4 is configured to convert a rotational motion into a linear motion for driving the movable stopper 3 to make a linear reciprocating motion.

Referring to fig. 1 to 9, a metal wire penetrates through an end opening 100 of the rotating body 1 along the central axis, the correcting wheel group 2 includes sliding blocks 21 and rolling wheels 20 installed on the sliding blocks 21, the number of the sliding blocks 21 corresponds to that of the rolling wheels 20, the sliding blocks 21 are six, the sliding blocks 21 are parallel to each other and are movably installed at preset positions in the rotating body 1 in an upright state, end surfaces for sliding contact are respectively provided at both ends of the sliding blocks 21, the rolling wheels 20 are installed in the rotating body 1 along the central axis through the sliding blocks 21, the rolling wheels 20 have rolling curved surfaces 200 for adaptively contacting cylindrical surfaces of the metal wire, the movable limiting members 3 are symmetrically arranged strip-shaped bodies, each strip-shaped body is provided with track surfaces 30 which are mutually adapted, the end surfaces are movably contacted with the track surfaces 30, the track surfaces 30 are smooth curved surfaces for synchronously adjusting relative positions of the adjacent sliding blocks 21, and for the rolling surfaces 200 to be simultaneously close to or far from the central axis. In practice, the rotating body 1 is a high-speed rotating body 1, and in order to ensure the rotation balance, the structure and the symmetry relationship of the rotating body 1 are the primary conditions with the symmetry relationship of the central axis. The sliding blocks 21 are thus all provided with the same structural dimensions, and likewise the rolling wheels 20 are all provided with the same structural dimensions. Further, friction force is formed at the contact position of the metal wire to be straightened and the rolling curved surface 200; according to the technical purpose of the present invention, the outer circumferential surface of the wire to be straightened contacts the curved rolling surface 200 as much as possible, so as to increase the contact area therebetween. Firstly, oxide and attached dirt on the outer surface of the metal wire are eliminated, so that the metal wire is exposed out of the smooth outer surface; secondly, because the contact area is large, the purpose of not damaging the wire rod is favorably achieved.

Further, the track surface 30 is provided with a plurality of connected planes and an inclined plane with a predetermined inclination angle, and the planes and the inclined plane of the track surface 30 are used for transmitting the linear motion of the bar-shaped body through the sliding fit with the sliding block 21. During operation, the sliding blocks 21 are driven to move vertically and vertically synchronously, and the moving directions of two adjacent sliding blocks 21 are opposite.

Still further, the motion converting device 4 has a rotational motion converting part 40 and a power output part 41 for providing a stable torque to the rotational motion converting part 40, and the rotational motion converting part 40 is configured to convert the rotational motion into a linear reciprocating motion, drive the bar-shaped body to make the linear reciprocating motion, and make the pushing pressure transmitted to the slider 21 a stable pressure for ensuring a constant pressure at the contact position of the wire to be straightened and the curved rolling surface 200.

As a further elaboration of the invention:

the rotating body 1 of the present embodiment has a body 11, six limiting holes 110 disposed in the body 11, and sliding slot structures 111 disposed in the body 11 and symmetrical to each other, and mandrels 112 provided at both ends of the body 11 and extending in opposite directions along the central axis, the end opening 100 penetrates through the rotation axis of the mandrel 112, the body 11 is a hollow cylinder, a plurality of hollow structures 113 penetrating through the body 11 are arranged along the radial direction of the body 11, the limiting holes 110 are arranged at the preset positions and distributed at equal intervals, are open holes communicated with the inner space of the chute structure 111, the limiting holes 110 are arranged along the direction of the central axis, the sliding groove structure 111 is a groove for the strip-shaped body to be slidably arranged therein to form linear motion limiting, the groove bottom of the groove is provided with a discontinuous plane 1110 avoiding the position of the hole opening, and the discontinuous plane 1110 is in the same plane. The body 11 is provided with a space-avoiding position (not shown) for the metal wire to pass through, and the space-avoiding position corresponds to the position between the two rows of rolling wheels 20 which are arranged up and down.

Further, the rotating body 1 of this embodiment is provided with at least two ring bodies 12, the ring body 12 is sleeved in the preset position of the body 11, and the inner ring of the ring body 12 is provided with a via hole adapted to the strip body to penetrate therethrough, so that the strip body is limited in movement and is movably positioned in the sliding groove structure 111.

In a specific embodiment, the sliding block 21 includes two end movable blocks 210 and a plurality of middle movable blocks 211, each of which is formed by a rectangular body and a hollow area 212 formed in the middle of the rectangular body, the end movable blocks 210 are respectively located at two end positions of the body 11, and the middle movable blocks 211 are located at a middle position of the body 11. The terminal surface includes first inclined plane 213, second inclined plane 214, third inclined plane 215 and fourth inclined plane 216, the both ends of terminal movable block 210 all are provided with and are connected first inclined plane 213 and second inclined plane 214, the both ends of middle part movable block 211 all are provided with third inclined plane 215 and fourth inclined plane 216, first inclined plane 213 with the crossing angle of second inclined plane 214 is greater than third inclined plane 215 with the crossing angle of fourth inclined plane 216. The rolling wheel 20 is located in the hollow area 212, and the axis of the rolling wheel 20 intersects with the central axis, and the intersection includes an obtuse included angle of a predetermined angle, in this embodiment, the obtuse included angle is one hundred and ten degrees.

Specifically, the first inclined surface 213, the second inclined surface 214, the third inclined surface 215 and the fourth inclined surface 216 are all smooth planes, the number of the sliders 21 and the rolling wheels 20 is equal to each other, and is six, and the axes of two adjacent rolling wheels 20 are all arranged at the same preset intersection angle, which is forty degrees in one embodiment. Two ends of the rectangular body penetrate through the limiting hole 110, and the first inclined surface 213, the second inclined surface 214, the third inclined surface 215 and the fourth inclined surface 216 are located in the space in the groove. The limiting holes 110 form a limiting structure in which the sliding block 21 is installed in a linear motion manner.

The strip-shaped body of this embodiment includes two square strips that are the same direction linear motion, two the square strips are parallel and positive relative setting, track face 30 all sets up in two the opposite side of square strip, track face 30 comprises terminal section part and the middle section part that is connected, the terminal section part has first direction plane 300, first direction inclined plane 301, second direction plane 302 and locking step 303, the middle section part has third direction plane 304, second direction inclined plane 305, fourth direction plane 306 and third direction inclined plane 307, so the crossing contained angle of first direction plane 300 and first direction inclined plane 301 is greater than the crossing contained angle of third direction plane 304 and second direction inclined plane 305, fourth direction plane 306 all with discontinuity plane 1110 looks sliding conflict.

In a specific embodiment, the rotary motion converting portion 40 has a transmission positioning element 400, an axial force applying element 401, a rotating shaft seat 402, a supporting seat 403, and a linear motion converting device 404, the transmission positioning element 400 is integrally a ring, an inner ring of the transmission positioning element 400 is provided with a clamping structure 4001 for movably connecting one end of the square strip, and the clamping structures 4001 are symmetrically arranged. Clamping structure 4001 has through groove part and bayonet socket part, through groove part with square rectangular one end looks adaptation, the bayonet socket part sets up in two inboard positions of through groove part symmetry. One end of the square strip is arranged in the through groove part through a pin shaft, and two ends of the pin shaft are clamped in the bayonet part. The structure is simple and reasonable, and the assembly is simple and convenient.

Further, the transmission positioning member 400 is movably sleeved at one end of the body 11, and the axial force application member 401 is a disk body that seals one port of the transmission positioning member 400 and seals the through groove portion and the bayonet portion. Synchronously, one end of the square strip is fixed in the through groove part through the disc body.

The axial force application member 401 is movably sleeved on the core shaft 112, the axial force application member 401 is disposed on the rotating shaft seat 402 through a bearing member, and the body 11 is transversely disposed on the corresponding supporting seat 403 and the linear motion conversion device 404 through the core shaft 112.

The linear motion conversion device 404 of this embodiment is provided with mount pad 4040, dead eye 4041, first conversion equipment and second conversion equipment, dead eye 4041 is located the middle part position of mount pad 4040, first conversion equipment and second conversion equipment all have driven sprocket 4042 and with driven sprocket 4042 the same rotation axis's linear motion subassembly 4043, the one end transmission of linear motion subassembly 4043 is connected pivot seat 402.

As a preferred embodiment of the present invention, the linear motion component 4043 is one of a face cam mechanism or a spiral cam mechanism. The structure has high transmission efficiency, is used for fine adjustment of linear feeding motion and has stable work.

In one embodiment, the power output part 41 has a motor 410, a reducer 411 and a gear box, a driving sprocket 412 is disposed in the gear box, the motor 410 is a servo motor 410, the driving sprocket 412 is driven by the reducer 411 and a torque amplifying gear set 413, and the torque amplifying gear set 413 is mounted in the gear box. Optionally, the motor 410 is connected to a variable frequency driver (not shown), and during operation, the output torque of the motor 410 is adjusted in real time according to the real-time torque change during the alignment operation of the body 11, so that the torque is maintained at a stable preset value for automatic synchronous torque compensation. The work is reasonable and stable, the action is rapid, and the efficiency is high.

Preferably, the rotating shaft base 402 and the mounting base 4040 of the present embodiment are provided with independent cooling fluid channels (not shown). The spindle base 402 and the mounting base 4040 each incorporate a corresponding coolant circulation system (not shown). The structure is used for emitting the working temperature to the outside environment, and is a protective measure.

The working process is as follows:

the metal wire penetrates into the body 11 through the end opening 100, penetrates through the rolling wheels 20 which are arranged in a staggered mode, and is pressed and straightened by the rolling wheels 20. Referring to fig. 1, 6 and 7, during the straightening operation, the linear motion component 4043 drives two square strips to be synchronously and slidably disposed in the sliding groove structure 111, and synchronously drives the sliding block 21 to perform a dislocation adjustment, so that the curved rolling surface 200 of the rolling wheel 20 is in good contact with the outer circumferential surface of the metal wire, and a stable pressure is applied to the contact position between the metal wire to be straightened and the curved rolling surface 200. Under the high-speed rotation of the body 11, the friction force formed at the contact position of the wire to be straightened and the curved rolling surface 200 generates heat, so that the wire is quickly straightened. According to the actual moment change that produces in the alignment process, servo motor 410 passes through frequency conversion driver real-time adjustment output moment, and then drives each slider 21 synchronous motion of two square rectangular drives, makes two adjacent sliders 21 dislocation adjustment, under the rotatory application of force of body 11, has realized the automatic quick alignment of wire.

Under the variable moment control of the motor 410, the straightening of the metal wires with different toughness is adapted, and under the working mode, the straightening speed is automatically tracked, automatic synchronous precision compensation is performed, the production efficiency is effectively improved, the outer surface quality of the metal wires is guaranteed, the follow-up high-quality product process is favorably realized, the waste of raw materials is reduced, and the problems of complex procedures and material waste of the traditional operation are improved.

The full-automatic precision straightening device with stepless adjustment has lasting continuous operation performance, automatic detection and adjustment functions in the operation process of equipment, stable straightening torque, simple operation, safe and convenient use, low requirement on the skill of an operator, capability of realizing a multi-machine operation single management operation mode, high practicability and accordance with the modern production standard.

While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in a variety of fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concepts defined by the claims and the equivalents thereof.

Claims

1. An electrodeless regulation full-automatic precise straightening device is composed of a straightening device of a metal wire for needle making, and is characterized by comprising a rotating body, at least one group of correcting wheel sets which are arranged in the rotating body and are used for concentrically rotating by taking the central axis of the rotating body as a rotating axis, movable limiting parts which are arranged in the rotating body and are used for rotating along with the rotating body in the same direction, and the movable limiting parts are synchronously connected with the correcting wheel sets in a transmission way, and a motion conversion device which is in driving connection with the movable limiting parts;

the metal wire penetrates through the end opening of the rotating body along the central axis, the correcting wheel set comprises a sliding block and a rolling wheel arranged on the sliding block, the sliding blocks are parallel to each other and are movably arranged at preset positions in the rotating body in an upright state, and both ends of the sliding block are provided with end faces for sliding contact, the rolling wheel is arranged in the rotating body along the central axis through the sliding block, the rolling wheel is provided with a rolling curved surface which is matched and abutted with the cylindrical surface of the metal wire, the movable limiting parts are strip-shaped bodies which are symmetrically arranged, the strip-shaped bodies are provided with mutually matched track surfaces, the end surfaces are movably abutted against the track surfaces, the track surface is a smooth curved surface used for synchronously adjusting the relative position of the adjacent sliding blocks, and the rolling curved surfaces are synchronously close to or far away from the central axis;

the motion conversion device is provided with a rotary motion conversion part and a power output part for providing stable torque for the rotary motion conversion part, wherein the rotary motion conversion part is used for converting rotary motion into linear reciprocating motion, driving the strip-shaped body to do the linear reciprocating motion and enabling pushing pressure transmitted to the sliding block to be stable pressure.

2. The full-automatic stepless adjustment precise straightening device according to claim 1, wherein the rotating body has a body, at least two limiting holes disposed in the body, sliding groove structures disposed at two ends of the body and extending oppositely along the central axis, the end openings penetrate through the rotation axis of the core shaft, the body is a hollow cylinder, a plurality of hollow structures penetrating through the body are disposed along the radial direction of the body, the limiting holes are disposed at the preset positions and are open holes communicated with the inner space of the sliding groove structures, the limiting holes are arranged along the direction of the central axis, the sliding groove structures are grooves for the strip-shaped bodies to be slidably disposed therein to limit the linear motion, the groove bottoms of the grooves are provided with discontinuous planes avoiding the positions of the openings of the open holes, the discontinuous planes are all in the same plane.

3. The full-automatic precise straightening device for electrodeless regulation according to claim 2, characterized in that the rotating body is provided with at least two ring bodies, the ring bodies are sleeved at preset positions of the body, and the inner ring of the ring bodies is provided with through holes which are matched with the strip bodies to penetrate through.

4. The full-automatic stepless adjustment precise straightening device according to claim 2, wherein the sliding block comprises two end movable blocks and a plurality of middle movable blocks, each of the end movable blocks and the middle movable blocks is composed of a rectangular body and a hollow area formed in the middle of the rectangular body, the end surface comprises a first inclined surface, a second inclined surface, a third inclined surface and a fourth inclined surface, the first inclined surface and the second inclined surface are connected to each other and are arranged at two ends of each of the end movable blocks, the third inclined surface and the fourth inclined surface are arranged at two ends of each of the middle movable blocks, and the intersection angle of the first inclined surface and the second inclined surface is different from the intersection angle of the third inclined surface and the fourth inclined surface;

the rolling wheel is positioned in the hollow area, the axis of the rolling wheel is intersected with the central axis, and the intersection comprises an obtuse included angle with a preset angle.

5. The stepless adjustment full-automatic precise straightening device according to claim 4, characterized in that the first inclined plane, the second inclined plane, the third inclined plane and the fourth inclined plane are smooth planes, the number of the sliding blocks and the rolling wheels is equal and is six, and the axes of two adjacent rolling wheels are arranged at the same preset intersection angle;

the two ends of the rectangular body penetrate through the limiting holes, and the first inclined plane, the second inclined plane, the third inclined plane and the fourth inclined plane are located in the space in the groove.

6. The full-automatic precision straightening device without pole adjustment according to claim 3, the strip-shaped body comprises two square strips which do the same-direction linear motion, the two square strips are parallel and are arranged in a positive-phase opposite manner, the track surfaces are arranged on opposite side edges of the two square strips, each track surface consists of an end section part and a connected middle section part, the end section has a first guide plane, a first guide slope, a second guide plane and a stop step, the middle section part is provided with a third guide plane, a second guide inclined plane, a fourth guide plane and a third guide inclined plane, therefore, the angle of the intersection angle between the first guide plane and the first guide inclined plane is larger than the angle of the intersection angle between the third guide plane and the second guide inclined plane, and the fourth guide plane is in sliding interference with the discontinuous plane.

7. The fully-automatic stepless adjustment precise straightening device according to claim 6, characterized in that the rotary motion conversion part is provided with a transmission positioning piece, an axial force application piece, a rotating shaft seat, a supporting seat and a linear motion conversion device, wherein the transmission positioning piece is integrally a ring body, a clamping structure for movably connecting one end of the square strip is arranged on an inner ring of the transmission positioning piece, the transmission positioning piece is movably sleeved on one end of the body, the axial force application piece is a disc body which seals one port of the transmission positioning piece and seals the clamping structure, the axial force application piece is movably sleeved on the mandrel, is arranged on the rotating shaft seat through a bearing piece, and the body is transversely arranged on the corresponding supporting seat and the linear motion conversion device through the mandrel;

the linear motion conversion device is provided with a mounting seat, a bearing hole, a first conversion device and a second conversion device, the bearing hole is located in the middle of the mounting seat, the first conversion device and the second conversion device are provided with a driven sprocket and a linear motion assembly which is in the same rotating axis with the driven sprocket, and one end of the linear motion assembly is in transmission connection with the rotating shaft seat.

8. The fully automatic precision straightening device with stepless adjustment according to claim 7, characterized in that the linear motion component is one of a face cam mechanism or a spiral cam mechanism.

9. The full-automatic precision straightening device of claim 7, wherein the power output part is provided with a motor, a speed reducer and a gear box, a driving sprocket is arranged in the gear box, the motor drives the driving sprocket through the speed reducer and a torque amplifying gear set, and the torque amplifying gear set is arranged in the gear box.

10. The full-automatic precision straightening device without pole adjustment according to claim 7, characterized in that the rotating shaft seat and the mounting seat are provided with independent cooling liquid flow passages.