CN118904950A - Automatic wire drawing equipment for steel strand production and wire drawing method thereof - Google Patents

Abstract

The present invention relates to a metal wire drawing technology, and specifically to an automated wire drawing equipment for steel strand production and a wire drawing method thereof. The automated wire drawing equipment for steel strand production comprises a frame, a wire drawing roller and a wire drawing die; the wire drawing rollers are arranged in pairs, including a central roller, a transmission structure, fixed clamps respectively fixedly sleeved on the two ends of the central roller, and a plurality of movable clamps located between the two fixed clamps and with adjustable diameters, and the two central rollers are parallel and tapered with the axis horizontal. The steel strands alternately bypass the clamps and the wire drawing dies of the two wire drawing rollers in the direction from the small end to the large end of the central roller. During the winding process, when the linear speed of the movable clamp does not match the moving speed of the steel strand, the transmission structure adjusts the position of the movable clamp so that the linear speed of the movable clamp is equal to the moving speed of the steel strand, thereby avoiding local slack or over-tightening of the steel strand, ensuring the wire drawing effect of the steel strand, and increasing the adaptability range of the movable clamp to the wire drawing die, with good versatility.

Description

Automated wire drawing equipment and wire drawing method for steel strand production

Technical Field

The invention relates to the technical field of metal wire drawing, and in particular to an automated wire drawing device for producing steel strands and a wire drawing method thereof.

Background Art

Stranded steel wire is a steel product composed of multiple steel wires twisted together. Its manufacturing process is divided into single-wire manufacturing and stranded wire manufacturing. Wire drawing technology is used to make single wires, specifically: the metal is forced through the die under the action of external force, and the metal cross section is compressed to change its shape. In the prior art, the twin-tower wire drawing machine adapts to the change of line speed before and after wire drawing by setting wire grooves of different diameters on the tower wheel. However, after the wire drawing die and single wire are replaced, the limited wire grooves of the tower wheel itself cannot adapt to the new specifications of the wire drawing die and single wire size, which will cause the metal single wire tension to be too large or too small, and then a new size of tower wheel needs to be matched, which makes the existing twin-tower wire drawing machine have a small adaptation working range and poor versatility.

Summary of the invention

The invention provides an automated wire drawing device for producing steel strands and a wire drawing method thereof, so as to solve the problem of poor versatility of existing wire drawing machines.

The present invention provides an automated wire drawing device for producing steel strands and a wire drawing method thereof, which adopts the following technical solutions:

An automated wire drawing equipment for producing steel strands, comprising a frame, a wire drawing roller and a wire drawing die; a pay-off roller and a take-up roller are installed on the frame; the wire drawing rollers are arranged in pairs, including a center roller and a plurality of clamping rings, the center rollers of the two wire drawing rollers are parallel and are tapered with their axes horizontal, the two center rollers are both mounted on the frame around their own axes, and the small ends of the two center rollers are located on the same side; the plurality of clamping rings include fixed clamping rings and movable clamping rings; there are two fixed clamping rings, which are respectively fixedly mounted on the two ends of the center roller; there are a plurality of movable clamping rings, which are all mounted outside the center roller and are located between the two fixed clamping rings, each movable clamping ring rotates synchronously with the center roller and is positionally adjustable within a preset range in the axial direction of the center roller, and the outer diameters of the plurality of clamping rings decrease successively from the large end to the small end of the center roller, wherein the diameter of the movable clamping ring is adjustable, and thus when moving along the axial direction of the center roller, its outer diameter It increases with the increase of the outer circumferential diameter of the center roller; a transmission structure is arranged between the movable clamping ring and the center roller, and when there is a speed difference between the steel strand and the movable clamping ring, the transmission structure makes the movable clamping ring move along the axial direction of the center roller, and when the moving speed of the steel strand is greater than the linear speed of the movable clamping ring, the movable clamping ring moves to the side close to the large end of the center roller; there are multiple wire drawing dies installed on the frame, and are divided into two groups, each group corresponding to a wire drawing roller; each wire drawing die corresponds to a clamping ring, and along the direction from the small end to the large end of the center roller, the die hole diameters of multiple wire drawing dies in the same group gradually decrease; after the steel strand extends from the pay-off roller, it goes along the direction from the small end to the large end of the center roller, alternately passes around the clamping rings of the two wire drawing rollers in turn, and is then fixed to the take-up roller; and the steel strand passing through one wire drawing roller passes through a wire drawing die corresponding to another wire drawing roller and is then wound around the clamping ring of the other wire drawing roller.

Optionally, the movable clamping ring includes a plurality of ring segments distributed circumferentially around the center roller, two adjacent ring segments are fixedly connected, and each ring segment is retractable in the circumferential direction of the center roller.

Optionally, the transmission structure includes a thread groove arranged outside the center roller and a thread block located between two adjacent ring segments, the thread groove extends along the generatrix direction of the outer peripheral surface of the center roller; the thread block is rotatably installed between the two adjacent ring segments and cooperates with the thread of the thread groove; the thread block is connected to a friction wheel for contacting the steel strand, and the friction wheel can rotate around its own axis while revolving around the axis of the center roller with the movable clamp, and can also rotate around its own axis under the friction contact of the steel strand, thereby enabling the thread block to drive the movable clamp ring to move axially along the center roller under the cooperation of the thread of the thread groove.

Optionally, each ring segment includes at least two segments distributed circumferentially around the central roller, and two adjacent segments are connected by a flexible connecting piece.

Optionally, a plurality of slide grooves are provided outside the center roller, and the plurality of slide grooves are distributed circumferentially around the center roller, and each segment corresponds to a slide groove for sliding cooperation; along the large end to the small end of the center roller, the spacing between the plurality of slide grooves corresponding to the plurality of segments of the same ring segment gradually decreases, so that when the movable retaining ring moves axially along the center roller, the two adjacent segments extrude or stretch the connecting piece; the slide grooves corresponding to the two adjacent segments of different ring segments are parallel to the axial direction of the center roller.

Optionally, two adjacent segments of two adjacent ring segments are connected via a fixing plate, and the threaded block and the friction wheel are both rotatably mounted on the fixing plate.

Optionally, a receiving groove for receiving the steel strand is provided on one side of each segment away from the outer circumference of the central roller.

Optionally, a side of the connecting member away from the outer circumference of the center roller is not higher than the bottom of the accommodating groove.

Optionally, the wire inlet opening of the wire drawing die is larger than the wire outlet opening.

An automated wire drawing method for producing steel strands, using the automated wire drawing equipment for producing steel strands, comprising:

S10, after the steel strand is pulled out from the pay-off roller, it is wound around the clamping rings of the two wire drawing rollers and the corresponding wire drawing dies from the small end to the large end of the center roller in sequence and then fixed to the take-up roller; during the winding process, when there is a speed difference between the steel strand and the movable clamping ring, the transmission structure causes the movable clamping ring to move axially along the center roller, and the diameter of the movable clamping ring increases with the increase of the outer circumference diameter of the center roller, thereby making the linear speed of the movable clamping ring and the steel strand adaptable;

S20, driving the two center rollers to rotate synchronously in the same direction, thereby driving the multiple clamping rings to rotate synchronously to stretch the steel strand, while the pay-off roller rotates to release the steel strand, and the take-up roller rotates to reel in the steel strand.

The beneficial effects of the present invention are as follows: the automated wire drawing equipment for steel strand production of the present invention, by setting a transmission structure, can adjust the position of the active clamping ring so that the linear speed of the active clamping ring and the moving speed of the steel strand tend to be equal when the diameter of the active clamping ring and the die hole diameter of the corresponding wire drawing die do not completely match, resulting in a mismatch between the linear speed of the active clamping ring and the moving speed of the steel strand, thereby avoiding local relaxation or overtightening of the steel strand, ensuring the wire drawing effect of the clamping ring and the wire drawing die on the steel strand, and being able to increase the adaptability range of the active clamping ring to the wire drawing die, with good versatility.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic diagram of the overall structure of an embodiment of an automated wire drawing device for producing steel strands according to the present invention;

FIG2 is an enlarged schematic diagram of point A in FIG1 ;

FIG3 is a front view of the overall structure of an embodiment of an automated wire drawing device for producing steel strands of the present invention;

FIG4 is a top view of the overall structure of an embodiment of an automated wire drawing device for producing steel strands of the present invention;

FIG5 is a schematic structural diagram of a wire drawing roller in an embodiment of an automated wire drawing device for producing steel strands of the present invention;

FIG6 is an enlarged schematic diagram of point B in FIG5;

FIG7 is a cross-sectional schematic diagram of a wire drawing roller in an embodiment of an automated wire drawing device for producing steel strands of the present invention;

FIG8 is an enlarged schematic diagram of point C in FIG7;

FIG. 9 is a schematic diagram of a partial structure of a movable clamping ring in an embodiment of an automated wire drawing device for producing steel strands of the present invention.

In the figure: 100, frame; 110, pay-off roller; 120, take-up roller; 200, drawing roller; 210, center roller; 211, slide groove; 220, fixed snap ring; 230, movable snap ring; 231, segment; 232, connector; 233, fixed plate; 234, slider; 240, transmission structure; 241, thread groove; 242, thread block; 243, friction wheel; 300, drawing die.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

An embodiment of an automated wire drawing device for producing steel strands according to the present invention, as shown in FIGS. 1 to 9 , includes a frame 100 , a wire drawing roller 200 and a wire drawing die 300 .

A pay-off roller 110 and a take-up roller 120 are mounted on the frame 100 .

The wire drawing rollers 200 are arranged in pairs, including a center roller 210 and a plurality of snap rings. The center rollers 210 of the two wire drawing rollers 200 are parallel and are tapered with their axes horizontal. Both center rollers 210 are installed on the frame 100 to rotate around their own axes, and the small ends of the two center rollers 210 are located on the same side. Specifically, the two center rollers 210 can be driven by two motors respectively, or one of them is driven by the motor and the other is connected to the motor through gear transmission to achieve synchronous rotation of the two center rollers 210. The plurality of snap rings include a fixed snap ring 220 and a movable snap ring 230; there are two fixed snap rings 220, which are fixedly sleeved on the two ends of the center roller 210 respectively. There are multiple movable snap rings 230, all of which are mounted outside the center roller 210 and located between the two fixed snap rings 220. Each movable snap ring 230 rotates synchronously with the center roller 210 and is positionally adjustable within a preset range in the axial direction of the center roller 210. Specifically, multiple clamping blocks (not shown in the figure) can be arranged at intervals outside the center roller 210, and each movable snap ring 230 is located between two adjacent clamping blocks. The two adjacent clamping blocks define a preset range of movement of the movable snap ring 230 in the axial direction of the center roller 210. Along the direction from the large end to the small end of the center roller 210, the outer diameters of the multiple clamping rings decrease successively; among them, the diameter of the movable clamping ring 230 is adjustable, and when it moves axially along the center roller 210, its outer diameter increases with the increase of the outer circumferential diameter of the center roller 210; a transmission structure 240 is arranged between the movable clamping ring 230 and the center roller 210, and when there is a speed difference between the steel strand and the movable clamping ring 230, the transmission structure 240 makes the movable clamping ring 230 move axially along the center roller 210, and when the moving speed of the steel strand is greater than the linear speed of the movable clamping ring 230, the movable clamping ring 230 moves toward the side close to the large end of the center roller 210.

There are multiple wire drawing dies 300 that are detachably installed on the frame 100 and are divided into two groups, each group corresponds to a wire drawing roller 200, and each wire drawing die 300 corresponds to a clamping ring, and along the direction from the small end to the large end of the center roller 210, the die hole diameters of the multiple wire drawing dies 300 in the same group gradually decrease; after the steel strand extends from the pay-off roller 110, along the direction from the small end to the large end of the center roller 210, it alternately passes around the clamping rings of the two wire drawing rollers 200 in turn and is fixed to the take-up roller 120; and the steel strand passing through one wire drawing roller 200 passes through a wire drawing die 300 corresponding to another wire drawing roller 200 and is then wound around the clamping ring of another wire drawing roller 200, and the wire inlet opening of the wire drawing die 300 is larger than the wire outlet opening.

The steel strand is wound in sequence from the small end to the large end of the center roller 210, and the outer diameters of the multiple clasps decrease in sequence along the direction from the large end to the small end of the center roller 210. When the center roller 210 rotates, the clasps closer to the large end rotate at a greater speed, and the corresponding die hole diameter of the wire drawing die 300 is smaller, and the steel strand wound outside the clasp is gradually stretched. During the steel strand winding process, the die hole diameter of the wire drawing die 300 corresponding to the fixed clasp 220 located at the small end of the center roller 210 is the size of the steel strand required to be stretched, and the die hole diameter of the wire drawing die 300 corresponding to the fixed clasp 220 located at the large end of the center roller 210 is the initial diameter of the steel strand. When the diameter of the movable clamping ring 230 does not completely match the die hole diameter of the corresponding wire drawing die 300, there is a speed difference between the linear speed of the steel strand driven by other movable clamping rings 230 or the fixed clamping ring 220 to move and the linear speed of the movable clamping ring 230 to rotate. If the linear speed of the movable clamping ring 230 during rotation is greater than the moving speed of the steel strand, the steel strand will be locally too tight. At this time, the transmission structure 240 causes the movable clamping ring 230 to move toward the side close to the small end of the center roller 210, and the diameter of the movable clamping ring 230 decreases accordingly, and then the linear speed of its rotation decreases, and tends to be equal to the moving speed of the steel strand; if the linear speed of the movable clamping ring 230 during rotation is less than the moving speed of the steel strand, the steel strand is prone to local relaxation. At this time, the transmission structure 240 causes the movable clamping ring 230 to move toward the side close to the large end of the center roller 210, and the diameter of the movable clamping ring 230 increases accordingly, and then the linear speed of its rotation increases, and tends to be equal to the moving speed of the steel strand. After the steel strand is wound, the position of each movable clamping ring 230 is adjusted, and then each movable clamping ring 230 is fixed to the center roller 210, and the center roller 210, the pay-off roller 110 and the take-up roller 120 are started to rotate for wire drawing.

By setting the transmission structure 240, when the diameter of the movable clamping ring 230 does not completely match the die hole diameter of the corresponding wire drawing die 300, resulting in a mismatch between the linear speed of the movable clamping ring 230 and the moving speed of the steel strand, the position of the movable clamping ring 230 is adjusted to make the linear speed of the movable clamping ring 230 tend to be equal to the moving speed of the steel strand, thereby avoiding local relaxation or over-tightening of the steel strand, ensuring the wire drawing effect of the clamping ring and the wire drawing die 300 on the steel strand, and increasing the adaptation range of the movable clamping ring 230 to the wire drawing die 300, with good versatility.

In this embodiment, the movable clamping ring 230 includes a plurality of ring segments distributed circumferentially around the center roller 210, two adjacent ring segments are fixedly connected, and each ring segment is retractable in the circumferential direction of the center roller 210. Each ring segment includes at least two segments 231 distributed circumferentially around the center roller 210, and two adjacent segments 231 are connected by a flexible connector 232. A receiving groove for receiving the steel strand is provided on one side of each segment 231 away from the outer circumference of the center roller 210, and the side of the connector 232 away from the outer circumference of the center roller 210 is not higher than the bottom of the receiving groove.

In this embodiment, the transmission structure 240 includes a thread groove 241 disposed outside the center roller 210 and a thread block 242 located between two adjacent ring segments. The thread groove 241 extends along the generatrix direction of the outer peripheral surface of the center roller 210; specifically, the center roller 210 is provided with a mounting groove along its generatrix direction, a rack is fixedly installed in the mounting groove, and the thread groove 241 is provided on the side of the rack away from the axis of the center roller 210. In some other embodiments, the thread groove 241 can also be directly provided outside the center roller 210. The thread block 242 is rotatably installed between two adjacent ring segments and is threadedly matched with the thread groove 241. The thread block 242 is connected to a friction wheel 243 for contacting the steel strand. While the friction wheel 243 revolves around the axis of the center roller 210 with the movable snap ring 230, it can also rotate around its own axis under the friction contact of the steel strand, thereby driving the movable snap ring 230 to move axially along the center roller 210 under the threaded match between the thread block 242 and the thread groove 241. Specifically, by configuring the rotation direction of the threaded fit between the threaded block 242 and the threaded groove 241, when the moving speed of the steel strand is greater than the linear speed of the friction wheel 243 orbiting around the axis of the center roller 210 along with the movable snap ring 230, the friction wheel 243 can drive the movable snap ring 230 to move toward the large end of the center roller 210. Among them, the adjacent two segments 231 of the adjacent two ring segments are connected by a fixed plate 233, and the threaded block 242 and the friction wheel 243 are both rotatably mounted on the fixed plate 233.

In this embodiment, a plurality of slide grooves 211 are provided outside the center roller 210, and the plurality of slide grooves 211 are distributed circumferentially around the center roller 210, and each segment 231 corresponds to a slide groove 211 for sliding cooperation, so that the movable snap ring 230 as a whole rotates synchronously with the center roller 210; along the large end to the small end of the center roller 210, the spacing between the plurality of slide grooves 211 corresponding to the plurality of segments 231 of the same ring segment gradually decreases, so that when the movable snap ring 230 moves axially along the center roller 210, the adjacent two segments 231 squeeze or stretch the connecting piece 232; the slide grooves 211 corresponding to the adjacent two segments 231 of different ring segments are parallel to the axial direction of the center roller 210. The restriction of the slide groove 211 can further ensure the change of the diameter of the movable snap ring 230 when it moves axially along the center roller 210. Specifically, each segment 231 is provided with a slider 234 on the side close to the center roller 210. The slider 234 slides with the slide groove 211, and a countersunk hole is opened on the slider 234 for installing bolts that abut against the side wall of the slide groove 211, so that the position of the slider 234 and the center roller 210 is fixed, and then the movable retaining ring 230 is locked to prevent it from shaking during the normal wire drawing process.

In some other embodiments, the fixed snap ring 220 and the movable snap ring 230 have the same structure and are diameter-adjustable structures, and the fixed snap ring 220 can slide with the slide groove 211. By adjusting the distance between the two fixed snap rings 220 on the center roller 210, the diameter ratio of the two fixed snap rings 220 can be adjusted to adapt to different wire drawing ratios. Before winding the steel strand, the position of the fixed snap ring 220 needs to be adjusted and then fixed to the center roller 210.

When in use, the automated wire drawing equipment for steel strand production of the present invention pulls one end of the steel strand from the pay-off roller 110, and along the direction from the small end of the center roller 210 to the large end, alternately passes around the clamping rings of the two wire drawing rollers 200 in sequence and is fixed to the take-up roller 120; and the steel strand passing through one wire drawing roller 200 passes through a wire drawing die 300 corresponding to the other wire drawing roller 200 and is then wound around the clamping ring of the other wire drawing roller 200.

During the winding process, when the diameter of the movable snap ring 230 does not completely match the die hole diameter of the corresponding wire drawing die 300, the linear velocity of the steel strand driven by other movable snap rings 230 or the fixed snap ring 220 to move and the linear velocity of the movable snap ring 230 to rotate are differentially generated. If the linear velocity of the movable snap ring 230 during rotation is greater than the moving speed of the steel strand, the friction wheel 243 will rotate synchronously with the movable snap ring 230 around the axial direction of the center roller 210, which will produce a positive rotation relative to the steel strand, so that the thread block 242 drives the movable snap ring 230 as a whole to move toward the small end of the center roller 210 under the cooperation with the thread of the thread groove 241, and the multiple segments 231 of the same ring segment of the movable snap ring 230 approach each other under the restriction of the slide groove 211, the diameter of the movable snap ring 230 is reduced, and the linear velocity when rotating with the center roller 210 is reduced, so that the linear velocity of the movable snap ring 230 and the moving speed of the steel strand tend to be equal. On the contrary, if the linear speed of the movable snap ring 230 during rotation is less than the moving speed of the steel strand, the friction wheel 243 will rotate inversely relative to the steel strand when it rotates synchronously with the movable snap ring 230 around the center roller 210 axially, so that the thread block 242 drives the movable snap ring 230 as a whole to move toward the large end of the center roller 210 under the thread cooperation with the thread groove 241, and the multiple segments 231 of the same ring segment of the movable snap ring 230 move away from each other under the restriction of the slide groove 211, and the diameter of the movable snap ring 230 increases, and the linear speed when rotating with the center roller 210 increases, so that the linear speed of the movable snap ring 230 is equal to the moving speed of the steel strand. After the winding is completed, the slider 234 is fixed to the slide groove 211 with bolts, and then the movable snap ring 230 is fixed to the center roller 210.

Afterwards, when the center roller 210 rotates, the take-up roller 120 rotates to wind up the steel strand, the closer the clamping ring is to the large end, the greater the rotation speed is, and the corresponding die hole diameter of the wire drawing die 300 is smaller, and the steel strand wound outside the clamping ring is gradually stretched.

An automated wire drawing method for producing steel strands, using the automated wire drawing equipment for producing steel strands, comprising:

S10, after the steel strand is pulled out from the pay-off roller 110, it is wound around the clamping rings of the two wire drawing rollers 200 and the corresponding wire drawing dies 300 from the small end to the large end of the center roller 210 in sequence and then fixed to the take-up roller 120; during the winding process, when there is a speed difference between the steel strand and the movable clamping ring 230, the transmission structure 240 makes the movable clamping ring 230 move axially along the center roller 210, and the diameter of the movable clamping ring 230 increases with the increase of the outer circumferential diameter of the center roller 210, so that the movable clamping ring 230 is adapted to the linear speed of the steel strand;

S20, driving the two center rollers 210 to rotate synchronously in the same direction, thereby driving the multiple clamping rings to rotate synchronously to stretch the steel strands, while the pay-off roller 110 rotates to release the steel strands, and the take-up roller 120 rotates to reel in the steel strands.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Automatic wire drawing equipment is used in steel strand wires production, its characterized in that: comprises a frame, a wire drawing roller and a wire drawing die;

A wire releasing roller and a wire collecting roller are arranged on the frame;

The wire drawing rollers are arranged in pairs and comprise a central roller and a plurality of clamping rings, the central rollers of the two wire drawing rollers are parallel and are conical with horizontal axes, the two central rollers are rotatably arranged on the frame around the axes of the two central rollers, and the small ends of the two central rollers are positioned on the same side; the plurality of snap rings comprise fixed snap rings and movable snap rings; the two fixed clamping rings are respectively and fixedly sleeved at the two ends of the central roller; the movable clamping rings are sleeved outside the central roller and positioned between the two fixed clamping rings, each movable clamping ring synchronously rotates along with the central roller and is adjustable in position in a preset range in the axial direction of the central roller, the outer diameters of the plurality of clamping rings are sequentially reduced along the direction from the big end to the small end of the central roller, the diameters of the movable clamping rings are adjustable, and then when the movable clamping rings axially move along the central roller, the outer diameters of the movable clamping rings are increased along with the increase of the outer circumference diameter of the central roller; a transmission structure is arranged between the movable clamping ring and the central roller, when the steel stranded wires and the movable clamping ring are subjected to differential speed, the movable clamping ring axially moves along the central roller, and when the moving speed of the steel stranded wires is higher than the linear speed of the movable clamping ring, the movable clamping ring moves towards the side close to the large end of the central roller;

The wire drawing die is provided with a plurality of wire drawing rollers which are all arranged on the frame and are divided into two groups, and each group corresponds to one wire drawing roller; each wire drawing die corresponds to one clamping ring, and the diameters of die holes of a plurality of wire drawing dies in the same group gradually decrease along the direction from the small end to the large end of the center roller; after the steel strands extend out from the wire releasing roller, the steel strands are fixed on the wire collecting roller after sequentially and alternately bypassing the clamping rings of the two wire drawing rollers along the direction from the small end to the large end of the center roller; and the steel strand passing through one wire drawing roller passes through one wire drawing die corresponding to the other wire drawing roller and then winds the clamping ring of the other wire drawing roller.

2. The automated wire drawing equipment for steel strand production according to claim 1, wherein: the movable snap ring comprises a plurality of ring segments circumferentially distributed around the central roller, two adjacent ring segments are fixedly connected, and each ring segment is telescopic in the circumferential direction of the central roller.

3. The automated wire drawing equipment for steel strand production according to claim 2, wherein: the transmission structure comprises a thread groove arranged outside the central roller and a thread block positioned between two adjacent ring segments, and the thread groove extends along the direction of a generatrix of the peripheral surface of the central roller; the thread blocks are rotatably arranged between two adjacent ring segments and are in threaded fit with the thread grooves; the friction wheel used for being in contact with the steel strand wires is connected to the thread block, and can rotate around the axis of the thread block under the friction contact of the steel strand wires when the friction wheel revolves around the axis of the central roller along with the movable clamping ring, so that the movable clamping ring is driven to axially move along the central roller under the threaded fit of the thread block and the thread groove.

4. An automated wire drawing apparatus for steel strand production according to claim 3, wherein: each ring segment comprises at least two segments circumferentially distributed around the central roller, and adjacent segments are connected by flexible connectors.

5. The automated wire drawing equipment for steel strand production of claim 4, wherein: a plurality of sliding grooves are formed outside the central roller, the sliding grooves are circumferentially distributed around the central roller, and each segment is correspondingly matched with one sliding groove in a sliding way; the intervals between a plurality of sliding grooves corresponding to a plurality of segments of the same ring section are gradually reduced along the large end of the center roller to the small end of the center roller, so that when the movable clamping ring moves along the axial direction of the center roller, the adjacent two segments squeeze or stretch the connecting piece; the corresponding sliding grooves of two adjacent segments of different ring segments are parallel to the axial direction of the central roller.

6. The automated wire drawing equipment for steel strand production of claim 4, wherein: two adjacent segments of two adjacent ring segments are connected through a fixed plate, and the thread blocks and the friction wheels are rotatably arranged on the fixed plate.

7. The automated wire drawing equipment for steel strand production of claim 4, wherein: and one side of each segment, which is far away from the outer circumferential surface of the central roller, is provided with a containing groove for containing the steel strand.

8. The automated wire drawing equipment for steel strand production of claim 7, wherein: the side of the connecting piece far away from the outer peripheral surface of the central roller is not higher than the bottom of the accommodating groove.

9. The automated wire drawing equipment for steel strand production according to claim 1, wherein: the wire inlet end opening of the wire drawing die is larger than the wire outlet end opening.

10. An automatic wire drawing method for steel strand production, using an automatic wire drawing apparatus for steel strand production as claimed in any one of claims 1 to 9, characterized by comprising:

S10, after the steel stranded wires are pulled out from the paying-off roller, the steel stranded wires are sequentially wound on the clamping rings of the two wire drawing rollers and the corresponding wire drawing dies from the small end to the large end of the center roller and then fixed on the wire collecting roller; in the winding process, when the steel strand and the movable clamp ring are subjected to differential speed, the movable clamp ring moves axially along the central roller, the diameter of the movable clamp ring increases along with the increase of the outer circumferential diameter of the central roller, and the linear speed of the movable clamp ring and the steel strand is further adapted;

S20, driving the two central rollers to synchronously rotate along the same direction, further driving the plurality of clamping rings to synchronously rotate to stretch the steel strand, simultaneously enabling the wire releasing roller to rotate to release the steel strand, and enabling the wire collecting roller to rotate to collect the steel strand.