1. A heat treatment method for manufacturing prestressed steel strands is characterized in that: the specific manufacturing heat treatment steps of the prestressed steel strand are as follows:

s1, fixing the steel strand: manually placing the coiled steel strand on an unreeling device, pulling out one end of the coiled steel strand, sequentially passing through an outer limiting unit (1), a straightening unit (2), a heating unit (3) and a cooling unit (4), and fixing the steel strand on a reeling device; and the straightening unit (2) is operated to adjust the tightness degree of the steel strand inside;

s2, heat treatment of the steel strand: the height of the heating unit (3) is manually adjusted, and the heating unit (3) is used for quickly and uniformly heating the steel strand inside;

s3, water quenching of steel strands: after the steel strand is heated, the steel strand is wound by a winding device, a section of the heated steel strand is moved to the lower end of a cooling unit (4), and water quenching treatment is carried out on the section of the heated steel strand by the cooling unit (4);

s4, winding the steel strand: the winding equipment works to drive the coiled steel strand on the unwinding equipment to unwind, and the unwound steel strand is sequentially subjected to heat treatment and water quenching treatment and finally wound into the coiled steel strand;

the manufacturing heat treatment of the prestressed steel strand in the steps of the prestressed steel strand S1-S4 needs to be completed by the cooperation of an outer limiting unit (1), a straightening unit (2), a heating unit (3) and a cooling unit (4); wherein:

a cooling unit (4) is arranged on the outer wall of the right side of the outer limiting unit (1), and straightening units (2) are symmetrically arranged inside the outer limiting unit (1); the heating unit (3) is arranged inside the outer limiting unit (1), and the heating unit (3) is positioned in the middle of the straightening unit (2);

the outer limiting unit (1) comprises a limiting frame (11), a sliding block (12), an auxiliary spring (13), a limiting roller (14) and a supporting rod (15); spacing frame (11) bilateral symmetry be provided with the rectangle through-hole, the inner wall symmetry is provided with the spout around the rectangle through-hole that is located spacing frame (11), bracing piece (15) set up in the spout of spacing frame (11), sliding block (12) set up in the spout of spacing frame (11) through sliding fit mode longitudinal symmetry respectively, and sliding block (12) cover is established on bracing piece (15), auxiliary spring (13) longitudinal symmetry cover establish the outer wall at bracing piece (15), sliding block (12) cooperate with auxiliary spring (13) that set up, sliding block (12) that the rectangle through-hole inside longitudinal symmetry of spacing frame (11) set up are connected through the axostylus axostyle that sets up, spacing roller (14) establish the outer wall at the axostylus axostyle through the bearing housing.

2. The method for manufacturing and heat treating the prestressed steel strand as recited in claim 1, wherein: the heating unit (3) comprises an adjusting cylinder (31), a fixed sleeve (32), a fixed ring (33), a limiting sleeve (34), an electric rotating ring (35) and a heating module (36); the adjusting cylinder (31) is symmetrically arranged on the inner wall of the bottom end of the limiting frame (11), the fixing sleeve (32) is installed at the top end of the adjusting cylinder (31), the fixing ring (33) is uniformly arranged inside the fixing sleeve (32), the limiting sleeve (34) is of a symmetrical separable structure, the limiting sleeve (34) is uniformly installed on the fixing ring (33), the inner wall of the limiting sleeve (34) is provided with a sliding groove, the electric rotating ring (35) is arranged in the sliding groove of the limiting sleeve (34), the heating module (36) is arranged inside the limiting sleeve (34) in a sliding fit mode, and the heating module (36) is connected with the electric rotating ring (35); the inner wall of the curled edge of the limiting sleeve (34) is uniformly provided with mounting holes.

3. The method for manufacturing and heat treating the prestressed steel strand as recited in claim 1, wherein: the straightening unit (2) comprises a first frame (21), a first adjusting rod (22), a U-shaped frame (23), a first roller (24), a second frame (25), a second adjusting rod (26), a pressing plate (27), a limiting column (28), a limiting spring (29), a sliding frame (20) and a second roller (201); the first frame (21) and the second frame (25) are respectively arranged in the outer limiting unit (1), and the first frame (21) is positioned on the outer side of the second frame (25); sliding grooves are symmetrically formed in the front inner wall and the rear inner wall of the first frame (21), the U-shaped frame (23) is installed in the sliding grooves of the first frame (21) in a sliding fit mode, the first adjusting rod (22) is installed on the first frame (21) in a threaded connection mode, the lower end of the first adjusting rod (22) is connected with the outer wall of the upper end of the U-shaped frame (23) through a bearing, a shaft rod is arranged in the U-shaped frame (23) through a bearing, and first rollers (24) are uniformly arranged on the shaft rod; the inner wall symmetry is provided with the rectangular channel around No. two frame (25), spacing post (28) symmetry set up in the rectangular channel of No. two frame (25), the outer wall that is located spacing post (28) from last down in proper order the cover be equipped with press plate (27) and carriage (20), press plate (27) and carriage (20) between spacing post (28) outer wall cover be equipped with spacing spring (29), the inside of carriage (20) is provided with the axostylus axostyle through the bearing, and the outer wall of axostylus axostyle evenly is provided with No. two cylinders (201), No. two adjust pole (26) and set up on No. two frame (25) through the threaded connection mode, and the lower extreme of No. two regulation pole (26) passes through the bearing and connects on press plate (27).

4. The method for manufacturing the prestressed steel strand as recited in claim 2, wherein: the heating module (36) comprises a supporting block (361), a supporting spring (362), a ring-shaped cylinder (363), a tungsten wire rod (364), a guide rod (365), a guide spring (366), a telescopic block (367) and an execution roller (368); the supporting blocks (361) are uniformly arranged in the mounting holes of the limiting sleeve (34) in a sliding fit mode, the supporting blocks (361) are connected with the inner wall of the mounting hole of the limiting sleeve (34) through the arranged supporting springs (362), the annular cylinder (363) is arranged in the limiting sleeve (34) in a sliding fit mode, an annular groove is formed in the inner wall of the annular cylinder (363), and the top end of each supporting block (361) is matched with the annular groove of the annular cylinder (363); the outer wall of an annular cylinder (363) is connected on electronic change (35), an annular cylinder (363) inner wall evenly be provided with tungsten filament stick (364), and the inner wall of an annular cylinder (363) evenly is provided with the guide hole, be located guide hole of an annular cylinder (363) and be provided with guide bar (365), guide bar (365) outer wall cover be equipped with guide spring (366), flexible piece (367) is established at the outer wall of guide bar (365) through sliding fit mode cover, and flexible piece (367) is installed in the guide hole of an annular cylinder (363) through sliding fit mode, the lower extreme that is located flexible piece (367) is provided with execution roller (368) through the bearing.

5. The method for manufacturing and heat treating the prestressed steel strand as recited in claim 1, wherein: the cooling unit (4) comprises a cooling box (41), a fixing plate (42), a self-sucking pump (43), a spray head (44), a guide roller (45) and a water outlet pipe (46); a rectangular hole is formed in the cooling box (41); the inside of cooler bin (41) is provided with fixed plate (42), and the lower extreme of fixed plate (42) evenly is provided with drenches shower nozzle (44), and the upper end of fixed plate (42) is provided with self priming pump (43), and the delivery port of self priming pump (43) is connected on drenching shower nozzle (44), and the water inlet of self priming pump (43) is located the outside of cooler bin (41), the inside of cooler bin (41) evenly is provided with deflector roll (45) through the bearing, and the rectangular hole lower extreme position that is located cooler bin (41) right side is provided with outlet pipe (46).

6. The method for manufacturing the prestressed steel strand as recited in claim 2, wherein: the two ends of the limiting sleeve (34) are respectively provided with an inwards concave curled edge, the curled edge of the limiting sleeve (34) is provided with a chamfer, and the outer wall of the curled edge of the limiting sleeve (34) is uniformly provided with balls in a movable connection mode.

7. The method for manufacturing the prestressed steel strand as recited in claim 4, wherein: the top end of the supporting block (361) is provided with balls in a movable connection mode.

8. The method for manufacturing the prestressed steel strand as recited in claim 5, wherein: the guide rollers (45) are arranged in a T-shaped structure.

Background

The stranded wire is a steel product formed by stranding a plurality of steel wires and can be divided into a prestressed steel stranded wire, an unbonded steel stranded wire, a galvanized steel stranded wire and the like. The surface of the carbon steel can be added with a zinc coating, a zinc-aluminum alloy layer, an aluminum coating layer, a copper coating layer, epoxy resin coating and the like according to requirements.

In order to improve the structural strength of the steel strand, the surface of the steel strand needs to be subjected to heat treatment; the existing steel strand mainly has the following problems in the process of heat treatment: the surface of the steel strand is bent to a certain degree, so that the treatment effect of the steel strand is influenced during heat treatment; the bending of the outer wall of the steel strand can influence the moving effect of the steel strand in the rolling and finishing process; the outer wall of the steel strand is difficult to be heated uniformly in the process of carrying out heat treatment on the surface of the steel strand, and the outer wall of the steel strand cannot be completely cooled through one-time soaking type water cooling in the water quenching and cooling process.

Therefore, in order to improve the heat treatment effect of the steel strand and ensure the structural quality of the outer wall of the steel strand; the invention provides a heat treatment method for manufacturing a prestressed steel strand.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme that the manufacturing heat treatment method of the prestressed steel strand comprises the following specific manufacturing heat treatment steps of:

s1, fixing the steel strand: manually placing the coiled steel strand on an unreeling device, pulling out one end of the coiled steel strand, sequentially passing through an outer limiting unit, a straightening unit, a heating unit and a cooling unit, and fixing the coiled steel strand on a reeling device; and operating the straightening unit to adjust the tightness degree of the steel strand inside;

s2, heat treatment of the steel strand: the height of the heating unit is adjusted, and the steel strand inside the heating unit is quickly and uniformly heated;

s3, water quenching of steel strands: after the steel strand is heated, the steel strand is wound by a winding device, a section of the heated steel strand is moved to the lower end of a cooling unit, and water quenching treatment is carried out on the section of the heated steel strand by the cooling unit;

s4, winding the steel strand: the winding equipment works to drive the coiled steel strand on the unwinding equipment to unwind, and the unwound steel strand is sequentially subjected to heat treatment and water quenching treatment and finally wound into the coiled steel strand;

the manufacturing heat treatment of the prestressed steel strand in the steps of the prestressed steel strand S1-S4 is completed by the cooperation of an external limiting unit, a straightening unit, a heating unit and a cooling unit; wherein:

a cooling unit is arranged on the outer wall of the right side of the outer limiting unit, and straightening units are symmetrically arranged inside the outer limiting unit; the heating unit is arranged in the outer limiting unit and is positioned in the middle of the straightening unit.

The outer limiting unit comprises a limiting frame, a sliding block, an auxiliary spring, a limiting roller and a supporting rod; the limiting frame is provided with rectangular through holes in bilateral symmetry, sliding grooves are symmetrically formed in the front and rear inner walls of the rectangular through holes of the limiting frame, the supporting rod is arranged in the sliding grooves of the limiting frame, the sliding blocks are respectively arranged in the sliding grooves of the limiting frame in an up-down symmetry mode in a sliding fit mode, the sliding blocks are sleeved on the supporting rod, the auxiliary springs are sleeved on the outer wall of the supporting rod in an up-down symmetry mode, the sliding blocks are matched with the arranged auxiliary springs, the sliding blocks which are symmetrically arranged in the front and rear direction in the rectangular through holes of the limiting frame are connected through the arranged shaft rods, and the limiting rollers are sleeved on the outer wall of the shaft rods through bearings; the steel strands penetrate through the limiting frame, the outer walls of the steel strands are limited and fixed through the upper limiting roller and the lower limiting roller respectively, so that a plurality of steel strands are kept stable in the winding and unwinding processes, and the adjacent two steel strands cannot be wound under the limiting effect; the winding and unwinding effect of the steel strand is ensured.

Preferably; the heating unit comprises an adjusting cylinder, a fixed sleeve, a fixed ring, a limiting sleeve, an electric rotating ring and a heating module; the adjusting cylinder is symmetrically arranged on the inner wall of the bottom end of the limiting frame, the top end of the adjusting cylinder is provided with a fixing sleeve, a fixing ring is uniformly arranged in the fixing sleeve, the limiting sleeve is of a symmetrical separable structure and is uniformly arranged on the fixing ring, the inner wall of the limiting sleeve is provided with a sliding groove, an electric rotating ring is arranged in the sliding groove of the limiting sleeve, the heating module is arranged in the limiting sleeve in a sliding fit manner, and the heating module is connected with the electric rotating ring; mounting holes are uniformly formed in the inner wall of the turned edge of the limiting sleeve; the adjusting cylinder works to drive the fixed sleeve to be lifted to a proper height, the electric rotating ring rotates to drive the heating module inside to rotate at a constant speed, and the heating processing of the steel strand is realized through the heating module.

Preferably; the straightening unit comprises a first frame, a first adjusting rod, a U-shaped frame, a first roller, a second frame, a second adjusting rod, a pressing plate, a limiting column, a limiting spring, a sliding frame and a second roller; the first frame and the second frame are respectively arranged in the outer limiting unit, and the first frame is positioned on the outer side of the second frame; sliding grooves are symmetrically formed in the front inner wall and the rear inner wall of the first frame, the U-shaped frame is installed in the sliding grooves of the first frame in a sliding fit mode, the first adjusting rod is installed on the first frame in a threaded connection mode, the lower end of the first adjusting rod is connected with the outer wall of the upper end of the U-shaped frame through a bearing, a shaft rod is arranged in the U-shaped frame through the bearing, and first rollers are uniformly arranged on the shaft rod; rectangular grooves are symmetrically formed in the front inner wall and the rear inner wall of the second frame, the limiting columns are symmetrically arranged in the rectangular grooves of the second frame, a pressing plate and a sliding frame are sequentially sleeved on the outer wall of each limiting column from top to bottom, a limiting spring is sleeved on the outer wall of each limiting column between the corresponding pressing plate and the corresponding sliding frame, a shaft rod is arranged inside the corresponding sliding frame through a bearing, a second roller is uniformly arranged on the outer wall of the shaft rod, the second adjusting rod is arranged on the second frame in a threaded connection mode, and the lower end of the second adjusting rod is connected to the corresponding pressing plate through the bearing; the straightening unit is convenient to adjust through the first adjusting rod and the second adjusting rod according to the thickness of the steel strand so as to control the tensile strength of the steel strand, and further quickly finish the trimming of the bent part of the outer wall of the steel strand; the treatment effect of the outer wall of the steel strand is ensured; in addition, in the process of trimming the steel strand, the friction resistance of the steel strand in the winding process is reduced through the rotation of the first roller and the second roller respectively, and the moving effect of the steel strand is ensured.

Preferably; the heating module comprises a supporting block, a supporting spring, an annular cylinder, a tungsten wire rod, a guide spring, a telescopic block and an execution roller; the supporting blocks are uniformly arranged in the mounting holes of the limiting sleeve in a sliding fit mode, the supporting blocks are connected with the inner wall of the mounting hole of the limiting sleeve through the arranged supporting springs, the annular cylinder is arranged inside the limiting sleeve in a sliding fit mode, the inner wall of the annular cylinder is provided with an annular groove, and the top end of each supporting block is matched with the annular groove of the annular cylinder; the outer wall of the annular cylinder is connected to the electric rotating ring, tungsten wire rods are uniformly arranged on the inner wall of the annular cylinder, guide holes are uniformly formed in the inner wall of the annular cylinder, guide rods are arranged in the guide holes of the annular cylinder, guide springs are sleeved on the outer walls of the guide rods, the telescopic blocks are sleeved on the outer walls of the guide rods in a sliding fit mode, the telescopic blocks are installed in the guide holes of the annular cylinder in a sliding fit mode, and execution rollers are arranged at the lower ends of the telescopic blocks through bearings; the stability of the annular cylinder is kept under the action of the supporting spring jacking and supporting block, when the annular cylinder rotates, the guide spring jacking and stretching telescopic block enables the execution roller to be attached to the outer wall of the steel strand, so that steel wires on the outer wall of the steel strand are pressed and maintained under the action of the execution roller, the structural quality of the outer wall of the steel strand is improved, in addition, in the rotating process of the annular cylinder, the tungsten wire rod generates heat, the heat generated by the tungsten wire rod quickly heats the steel strand inside, the tungsten wire rod rotates along with the tungsten wire rod, the heating effect of the steel strand is improved, and the uniform heating of the outer wall of the steel strand is ensured; the heating module adopts the circumferential uniform rotation heating to improve the heating efficiency of the heating module on the steel strand and ensure the uniform heating of the outer wall of the steel strand in the uniform rotation process, and the plastic molding effect of the outer wall of the steel strand is ensured by the action of the execution roller because the steel strand is heated and the structural strength is reduced in the process of heating the steel strand.

Preferably; the cooling unit comprises a cooling box, a fixing plate, a self-priming pump, a spray head, a guide roller and a water outlet pipe; a rectangular hole is formed in the cooling box; a fixed plate is arranged in the cooling box, a spraying nozzle is uniformly arranged at the lower end of the fixed plate, a self-priming pump is arranged at the upper end of the fixed plate, a water outlet of the self-priming pump is connected to the spraying nozzle, a water inlet of the self-priming pump is positioned outside the cooling box, a guide roller is uniformly arranged in the cooling box through a bearing, and a water outlet pipe is arranged at the lower end of a rectangular hole on the right side of the cooling box; the self-priming pump works to spray external cold water through the spraying nozzle, so that the heated steel strand is rapidly quenched and cooled, the water sprayed by the spraying nozzle is collected in the cooling box after quenching the steel strand, and the water in the cooling box can cool the steel strand at the bottom of the cooling box for the second time, so that the surface temperature of the steel strand is thoroughly reduced, the water collected in the cooling box flows out through the water outlet pipe after exceeding a certain capacity, the water collected in the cooling box is replaced, and the water quality in the cooling box is ensured; the cooling unit adopts flowing water flow to carry out quick water quenching cooling on the heated steel strand, so that the water quenching effect of the steel strand is ensured, and the steel strand is soaked and cooled through collected water after being subjected to flowing cold water quenching, so that the surface of the steel strand is completely cooled.

Preferably; the two ends of the limiting sleeve are respectively provided with an inwards concave turned edge, the turned edge of the limiting sleeve is provided with a chamfer, and the outer wall of the turned edge of the limiting sleeve is uniformly provided with balls in a movable connection mode; the two ends of the limiting sleeve are respectively provided with an inwards concave turned edge for facilitating the penetration of the steel strand, and the turned edge of the limiting sleeve is provided with a chamfer for preventing the steel strand from being scraped with the corner of the limiting sleeve to cause the burr generation of the steel strand; the outer wall of the curling part of the limiting sleeve is evenly provided with balls in a movable connection mode, so that the mobility of the steel strand in the winding process is improved.

Preferably; the top end of the supporting block is provided with a ball in a movable connection mode; the top of the supporting block is provided with balls through a movable connection mode, so that the supporting block is matched with the annular cylinder conveniently, and the annular cylinder keeps stable in the rotating process.

Preferably; the deflector roll be T type structure and arrange, the deflector roll is T type and arranges and is convenient for immerse cold aquatic rapid cooling around the lower extreme of rolling up steel strand wires when deflector roll upper end, and the upper end of steel strand wires drenches through the cold water that flows and spouts the assurance shrend effect.

The invention has the beneficial effects that:

the straightening unit is convenient to adjust through a first adjusting rod and a second adjusting rod according to the thickness of the steel strand so as to control the tensile strength of the steel strand, and further, the bent part of the outer wall of the steel strand is quickly trimmed; the treatment effect of the outer wall of the steel strand is ensured; in the process of trimming the steel strand, the friction resistance of the steel strand in the winding process is reduced through the rotation of the first roller and the second roller respectively, and the moving effect of the steel strand is ensured;

the heating module provided by the invention adopts circumferential uniform rotation heating to improve the heating efficiency of the heating module on the steel strand, and ensures uniform heating of the outer wall of the steel strand in the uniform rotation process;

the cooling unit provided by the invention adopts flowing water flow to rapidly quench and cool the heated steel strand, so that the water quenching effect of the steel strand is ensured, and the steel strand is soaked and cooled by the collected water after being quenched by flowing cold water, so that the surface of the steel strand is completely cooled.

Drawings

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

FIG. 1 is a flow chart of the heat treatment process for manufacturing prestressed steel strands according to the present invention;

FIG. 2 is a front view position cross-sectional view between the outer limit unit, the straightening unit, the heating unit and the cooling unit of the present invention;

FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;

FIG. 4 is a side sectional view of the first frame, the first adjusting rod, the U-shaped frame and the first roller of the present invention;

FIG. 5 is a side sectional view of the present invention between the second frame, the second adjustment lever, the pressing plate, the limiting post, the limiting spring, the sliding bracket and the second roller;

FIG. 6 is a side sectional view of the cooling unit of the present invention;

FIG. 7 is a schematic structural view of an external spacing unit of the present invention;

FIG. 8 is a side view of the heating unit of the present invention;

fig. 9 is a schematic structural view of the spacing sleeve of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.

As shown in fig. 1 to 9, a manufacturing heat treatment method of a prestressed steel strand includes the following steps:

s1, fixing the steel strand: manually placing the coiled steel strand on an unreeling device, pulling out one end of the coiled steel strand, sequentially passing through an outer limiting unit 1, a straightening unit 2, a heating unit 3 and a cooling unit 4, and fixing the coiled steel strand on a reeling device; the first adjusting rod 22 and the second adjusting rod 26 are respectively operated to control the relative height between the U-shaped frame 23 and the sliding frame 20;

s2, heat treatment of the steel strand: the fixed sleeve 32 is lifted to a proper height by the operation of the adjusting cylinder 31, the stability of the annular cylinder 363 is kept under the action of the supporting spring 362 jacking the supporting block 361, the electric rotating ring 35 rotates to drive the annular cylinder 363 to rotate, the guide spring 366 jacks the telescopic block 367 to enable the execution roller 368 to be attached to the outer wall of the steel strand, so that the steel wire on the outer wall of the steel strand is pressed and trimmed under the action of the execution roller 368, the structural quality of the outer wall of the steel strand is improved, in the rotating process of the annular cylinder 363, the tungsten wire rod 364 heats, the heat generated by the tungsten wire rod 364 quickly heats the steel strand inside, the tungsten wire rod 364 rotates along with the tungsten wire rod to improve the heating effect of the steel strand, and the outer wall of the steel strand is guaranteed to be uniformly heated;

s3, water quenching of steel strands: after the steel strand is heated, the steel strand is wound through a winding device, when the heated section of the steel strand moves to the lower end of the spraying nozzle 44, the self-sucking pump 43 works to spray external cold water through the spraying nozzle 44, so that the heated steel strand is rapidly quenched and cooled, the water sprayed by the spraying nozzle 44 is concentrated and collected in the cooling box 41 after quenching the steel strand, the water in the cooling box 41 is subjected to secondary water cooling on the steel strand at the bottom of the cooling box 41 again, the temperature on the surface of the steel strand is ensured to be completely reduced, the water collected in the cooling box 41 flows out through the water outlet pipe 46 after exceeding a certain capacity, so that the water collected in the cooling box 41 is replaced, and the water quality in the cooling box 41 is ensured;

s4, winding the steel strand: after the steel strand is treated, winding the steel strand by winding equipment, and then taking down the steel strand which is treated and coiled to be put in storage and stacked;

the manufacturing heat treatment of the prestressed steel strand in the steps of the prestressed steel strand S1-S4 needs to be completed by the cooperation of the outer limiting unit 1, the straightening unit 2, the heating unit 3 and the cooling unit 4; wherein:

a cooling unit 4 is arranged on the outer wall of the right side of the outer limiting unit 1, and straightening units 2 are symmetrically arranged inside the outer limiting unit 1; the heating unit 3 is arranged inside the outer limiting unit 1, and the heating unit 3 is positioned in the middle of the straightening unit 2;

the outer limiting unit 1 comprises a limiting frame 11, a sliding block 12, an auxiliary spring 13, a limiting roller 14 and a supporting rod 15; the limiting frame 11 is symmetrically provided with rectangular through holes in the left and right direction, sliding grooves are symmetrically formed in the front and rear inner walls of the rectangular through holes of the limiting frame 11, the supporting rod 15 is arranged in the sliding grooves of the limiting frame 11, the sliding blocks 12 are respectively and symmetrically arranged in the sliding grooves of the limiting frame 11 in the up-down direction through a sliding fit mode, the sliding blocks 12 are sleeved on the supporting rod 15, the auxiliary springs 13 are symmetrically sleeved on the outer wall of the supporting rod 15 in the up-down direction, the sliding blocks 12 are matched with the auxiliary springs 13, the sliding blocks 12 symmetrically arranged in the front and rear direction in the rectangular through holes of the limiting frame 11 are connected through shaft rods, and the limiting rollers 14 are sleeved on the outer wall of the shaft rods through bearings; the steel strands penetrate through the limiting frame 11, the outer walls of the steel strands are limited and fixed through the upper limiting roller 14 and the lower limiting roller 14, so that a plurality of steel strands are kept stable in the winding and unwinding processes, and the adjacent two steel strands cannot be wound under the limiting effect; the winding and unwinding effect of the steel strand is ensured.

The straightening unit 2 comprises a first frame 21, a first adjusting rod 22, a U-shaped frame 23, a first roller 24, a second frame 25, a second adjusting rod 26, a pressing plate 27, a limiting column 28, a limiting spring 29, a sliding frame 20 and a second roller 201; the first frame 21 and the second frame 25 are respectively installed inside the outer limiting unit 1, and the first frame 21 is positioned outside the second frame 25; sliding grooves are symmetrically formed in the front inner wall and the rear inner wall of the first frame 21, the U-shaped frame 23 is installed in the sliding grooves of the first frame 21 in a sliding fit mode, the first adjusting rod 22 is installed on the first frame 21 in a threaded connection mode, the lower end of the first adjusting rod 22 is connected with the outer wall of the upper end of the U-shaped frame 23 through a bearing, a shaft rod is arranged inside the U-shaped frame 23 through the bearing, and first rollers 24 are uniformly arranged on the shaft rod; rectangular grooves are symmetrically formed in the front inner wall and the rear inner wall of the second frame 25, the limiting columns 28 are symmetrically arranged in the rectangular grooves of the second frame 25, a pressing plate 27 and a sliding frame 20 are sequentially sleeved on the outer wall of each limiting column 28 from top to bottom, a limiting spring 29 is sleeved on the outer wall of each limiting column 28 between the corresponding pressing plate 27 and the corresponding sliding frame 20, a shaft rod is arranged inside the corresponding sliding frame 20 through a bearing, a second roller 201 is uniformly arranged on the outer wall of the shaft rod, a second adjusting rod 26 is arranged on the second frame 25 in a threaded connection mode, and the lower end of the second adjusting rod 26 is connected to the corresponding pressing plate 27 through a bearing; the first adjusting rod 22 and the second adjusting rod 26 are respectively operated to control the relative height between the U-shaped frame 23 and the sliding frame 20, the straightening treatment of the bent part of the steel strand is realized through the action of the first roller 24 and the second roller 201, the steel strand is subjected to tension and is respectively matched with the outer walls of the first roller 24 and the second roller 201 in the process of winding and unwinding the steel strand, the straightening of the outer bent part of the steel strand is quickly realized, in order to improve the mobility of the steel strand, the friction force between the steel strand and the first roller 24 and the second roller 201 is reduced through the rotation of the first roller 24 and the second roller 201, the straightening unit 2 is convenient to further control the tension strength of the steel strand through the adjustment of the first adjusting rod 22 and the adjustment of the second adjusting rod 26 according to the thickness of the steel strand, and further quickly realize the trimming of the bent part of the outer wall of the steel strand; the treatment effect of the outer wall of the steel strand is ensured; in addition, in the process of trimming the steel strand, the first roller 24 and the second roller 201 rotate respectively to reduce the friction resistance of the steel strand in the winding process, and the moving effect of the steel strand is ensured.

The heating unit 3 comprises an adjusting cylinder 31, a fixed sleeve 32, a fixed ring 33, a limiting sleeve 34, an electric rotating ring 35 and a heating module 36; the adjusting cylinder 31 is symmetrically arranged on the inner wall of the bottom end of the limiting frame 11, the fixing sleeve 32 is installed at the top end of the adjusting cylinder 31, the fixing ring 33 is uniformly arranged inside the fixing sleeve 32, the limiting sleeve 34 is of a symmetrical separable structure, the limiting sleeve 34 is uniformly installed on the fixing ring 33, the inner wall of the limiting sleeve 34 is provided with a sliding groove, the electric rotating ring 35 is arranged in the sliding groove of the limiting sleeve 34, the heating module 36 is arranged inside the limiting sleeve 34 in a sliding fit mode, and the heating module 36 is connected with the electric rotating ring 35; the two ends of the limiting sleeve 34 are respectively provided with an inwards concave turned edge, the turned edge of the limiting sleeve 34 is provided with a chamfer, and the outer wall of the turned edge of the limiting sleeve 34 is uniformly provided with balls in a movable connection mode; the two ends of the limiting sleeve 34 are respectively provided with an inwards concave turned edge for facilitating the penetration of the steel strand, and the turned edge of the limiting sleeve 34 is provided with a chamfer for preventing the steel strand from rubbing with the corner of the limiting sleeve 34 to generate burrs; the balls are uniformly arranged on the outer wall of the curling part of the limiting sleeve 34 in a movable connection mode, so that the mobility of the steel strand in the winding process is improved; mounting holes are uniformly formed in the inner wall of the turned edge of the limiting sleeve 34; the adjusting cylinder 31 works to drive the fixing sleeve 32 to be lifted to a proper height, the electric rotating ring 35 rotates to drive the internal heating module 36 to rotate at a constant speed, and the heating treatment of the steel strand is realized through the heating module 36.

The heating module 36 comprises a supporting block 361, a supporting spring 362, a ring type cylinder 363, a tungsten wire rod 364, a guide rod 365, a guide spring 366, a telescopic block 367 and an execution roller 368; the supporting blocks 361 are uniformly arranged in the mounting holes of the limiting sleeves 34 in a sliding fit mode, the supporting blocks 361 are connected with the inner walls of the mounting holes of the limiting sleeves 34 through supporting springs 362, and balls are arranged at the top ends of the supporting blocks 361 in a movable connection mode; balls are arranged at the top ends of the supporting blocks 361 in a movable connection mode, so that the supporting blocks 361 are matched with the annular cylinder 363, and the annular cylinder 363 keeps stable in the rotating process; the annular cylinder 363 is arranged inside the limit sleeve 34 in a sliding fit manner, an annular groove is formed in the inner wall of the annular cylinder 363, and the top end of the supporting block 361 is matched with the annular groove of the annular cylinder 363; the outer wall of the annular cylinder 363 is connected to the electric rotating ring 35, the inner wall of the annular cylinder 363 is uniformly provided with tungsten wire rods 364, the inner wall of the annular cylinder 363 is uniformly provided with guide holes, a guide rod 365 is arranged in the guide hole of the annular cylinder 363, the outer wall of the guide rod 365 is sleeved with a guide spring 366, a telescopic block 367 is sleeved on the outer wall of the guide rod 365 in a sliding fit manner, the telescopic block 367 is arranged in the guide hole of the annular cylinder 363 in a sliding fit manner, and the lower end of the telescopic block 367 is provided with an execution roller 368 through a bearing; the stability of the annular cylinder 363 is kept under the action of the supporting spring 362 jacking and supporting block 361, when the annular cylinder 363 rotates, the guide spring 366 jacks and stretches the telescopic block 367 to enable the execution roller 368 to be attached to the outer wall of the steel strand, so that the steel wire on the outer wall of the steel strand is pressed and trimmed under the action of the execution roller 368, the structural quality of the outer wall of the steel strand is improved, in the rotating process of the annular cylinder 363, the tungsten wire rod 364 generates heat, the heat generated by the tungsten wire rod 364 quickly heats the steel strand inside, the tungsten wire rod 364 rotates along with the steel strand to improve the heating effect of the steel strand, and the outer wall of the steel strand is guaranteed to be uniformly heated; the heating module 36 adopts circumferential uniform rotation heating to improve the heating efficiency of the steel strand and ensure uniform heating of the outer wall of the steel strand in the uniform rotation process, and in the process of heating the steel strand, because the steel strand is heated, the structural strength is reduced, and the plastic molding effect of the outer wall of the steel strand is ensured by executing the roller 368.

The cooling unit 4 comprises a cooling box 41, a fixing plate 42, a self-priming pump 43, a shower nozzle 44, a guide roller 45 and a water outlet pipe 46; a rectangular hole is formed in the cooling box 41; the cooling box 41 is internally provided with a fixing plate 42, the lower end of the fixing plate 42 is uniformly provided with a spray head 44, the upper end of the fixing plate 42 is provided with a self-sucking pump 43, the water outlet of the self-sucking pump 43 is connected to the spray head 44, the water inlet of the self-sucking pump 43 is positioned outside the cooling box 41, the inside of the cooling box 41 is uniformly provided with guide rollers 45 through bearings, the guide rollers 45 are arranged in a T-shaped structure, so that the lower end of a steel strand is immersed in cold water for rapid cooling when the steel strand is wound on the upper end of the guide rollers 45, and the upper end of the steel strand is sprayed with flowing cold water to ensure a water quenching effect; a water outlet pipe 46 is arranged at the lower end of the rectangular hole on the right side of the cooling box 41; the self-priming pump 43 works to spray external cold water through the spraying nozzle 44, so that the heated steel strand is rapidly quenched and cooled, the water sprayed from the spraying nozzle 44 is collected in the cooling tank 41 after quenching the steel strand, and the water in the cooling tank 41 is cooled for the second time again for the steel strand at the bottom of the cooling tank 41, so that the surface temperature of the steel strand is completely reduced, the water collected in the cooling tank 41 flows out through the water outlet pipe 46 after exceeding a certain capacity, so that the water collected in the cooling tank 41 is replaced, and the water quality in the cooling tank 41 is ensured; the cooling unit 4 adopts flowing water flow to rapidly perform water quenching cooling on the heated steel strand, so that the water quenching effect of the steel strand is ensured, and the steel strand is soaked and cooled through collected water after flowing cold water quenching is performed, so that the surface of the steel strand is completely cooled.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.