CN111962084A

CN111962084A - Surface treatment process for metal wire after stretch forming

Info

Publication number: CN111962084A
Application number: CN202010843858.XA
Authority: CN
Inventors: 汪煜; 胡峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2020-11-20

Abstract

The invention provides a surface treatment process after metal wire rod stretch forming, which is characterized in that the surface treatment after the metal wire rod stretch forming is finished by matching a bottom cylinder, an auxiliary device, a fixing device and coiled wire rods; the pickling device can solve the problems that the pickling liquid in the inner part is stirred in order to improve the pickling effect of the metal wire in the pickling process of the existing coiled wire, but the pickling liquid is easy to overflow in the pickling process promoted by the stirring and shaking of the pickling liquid, and an inner sleeve is easy to shake in the rotating pickling process, so that the pickling effect of the metal wire is influenced; and the inner sleeve is easy to deflect in the pickling shaking process, so that the pickling solution in the inner part overflows and the like.

Description

Surface treatment process for metal wire after stretch forming

Technical Field

The invention relates to the technical field of metal wire processing, in particular to a surface treatment process after metal wire stretching forming.

Background

The wire rod is one of the steel products with large consumption. After rolling, the product can be directly used for reinforcing bars of reinforced concrete and welding structural members, and can also be reprocessed for use. Drawing the steel wire into steel wires with various specifications, twisting the steel wires into steel wire ropes, weaving the steel wire ropes into steel wire meshes, winding the steel wire meshes, forming the steel wire meshes, and performing heat treatment to obtain springs; hot forging and cold forging to form rivets, cold forging and rolling to form bolts, screws and the like; cutting into mechanical parts or tools by heat treatment; the metal wire rod can be formed by drawing, splicing, welding and other methods.

After the metal wire is formed by drawing, the surface of the metal wire needs to be subjected to operations such as acid washing and the like; however, the prior coiled wire pickling process mainly has the following problems; in order to improve the pickling effect of the metal wire rod during pickling, the pickling solution inside the metal wire rod is stirred, but the pickling solution overflows easily during the pickling process promoted by the stirring and shaking of the existing pickling solution, and an inner sleeve is easily shaken during the rotating pickling process, so that the pickling effect of the metal wire rod is influenced; and the inner sleeve is easy to deflect during the pickling shaking process, so that the internal pickling liquid overflows.

In order to improve the pickling effect on the metal wire; the stability of the inner sleeve in the rotating process is kept; and ensuring that the pickling solution does not overflow; the invention provides a surface treatment process after metal wire rod stretch forming.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme that the surface treatment process after the metal wire rod is stretched and formed comprises the following specific steps of:

s1, acid washing solution injection: stirring a proper amount of pickling solution uniformly, injecting the pickling solution into the inner sleeve, and driving the inner sleeve to rotate uniformly in the circumferential direction under the action of the adjusting motor so as to stir the pickling solution uniformly;

s2, fixing the wire: manually placing the coiled wires needing pickling on a fixing device in sequence for fixing, and firmly fixing the coiled wires which are fixed intermittently by the fixing device;

s3, pickling the wire: placing a plurality of coils of wire to be pickled, which are fixed at the upper end, in the inner sleeve through a fixing device, and pickling the wire at the upper end through a pickling solution in the inner sleeve; thereby keeping the surface of the coiled wire clean;

the surface treatment after metal wire stretch forming in the steps S1-S3 of the surface treatment after metal wire stretch forming needs to be composed of a bottom cylinder, an auxiliary device, a fixing device and a coiled wire; wherein:

the lower end of the bottom barrel is provided with a flow guide hole, the inner wall of the bottom end of the bottom barrel is provided with an auxiliary device, the side wall of the bottom barrel is provided with a fixing device, and the fixing device is matched with the top end of the bottom barrel; and the fixing device is uniformly provided with coiled wires to be pickled; the auxiliary device is internally provided with pickling solution.

The auxiliary device comprises a support column, an outer sleeve, an inner sleeve, a protection unit, a flow guide pipe, a flow guide convex ring, a limiting cylinder, a limiting ring, an adjusting motor, a fixing unit and a plug-in module; the support columns are uniformly arranged on the inner wall of the bottom end of the bottom barrel, the upper ends of the support columns are provided with outer sleeves, the outer sleeves are sleeved inside the bottom barrel, the guide holes of the outer sleeves and the bottom barrel are connected through guide pipes, the inner wall of the bottom end of the outer sleeves is provided with an adjusting motor through a motor base, the top end of the adjusting motor is connected to the outer wall of the bottom end of the inner sleeves through a flange, the inner sleeves are sleeved inside the outer sleeves, the outer wall of the bottom end of the inner sleeves is provided with a limiting ring, the outer wall of the lower end of the limiting ring is uniformly provided with balls in a movable fit mode, the lower end of the limiting ring is arranged at the bottom end of the outer sleeves in a sliding fit mode, the limiting barrel is arranged at the bottom end of the outer sleeves and sleeved on the outer wall of the limiting, the side wall of the outer sleeve is uniformly provided with fixing units in a sliding fit mode, and the fixing units are matched with the outer side wall of the inner sleeve; the inner side wall of the bottom end of the inner sleeve is provided with a protection unit in a sliding fit mode; the plug-in module is arranged at a material leakage hole at the bottom end of the inner sleeve; through the auxiliary device splendid attire a quantitative pickle that sets up, and when the inside pickle of needs evacuation, through the splendid attire and the emission of the inside pickle of grafting module operation control inner skleeve to keep the stability of inner skleeve rotation in-process through spacing ring and fixed unit.

The fixing device comprises a lower clamping plate, an adjusting cylinder, an upper clamping plate, a supporting seat, a wire bundling column, a clamping cover unit and a coil clamping unit; the upper end of the lower clamping plate is symmetrically provided with adjusting cylinders, the top end of each adjusting cylinder is provided with an upper clamping plate, the outer wall of the middle part of the lower end of the upper clamping plate is provided with a supporting seat, the lower end of the supporting seat is provided with a wire bundling column, the clamping cover unit is sleeved on the outer wall of the upper end of the wire bundling column, and the clamping cover unit is connected with the lower end of the supporting seat; coil clamping units are uniformly arranged on the outer wall of the lower end of the wire bundling column; the bottom end of the bunch column is uniformly provided with balls in a movable connection mode; the lifting adjustment of the adjusting cylinder enables the coiled wire to be placed into the inner sleeve filled with the pickling solution, and then the pickling of the coiled wire is fully completed.

The protection unit comprises a limiting column, a limiting spring, a clamping jaw and a protection disc; the limiting columns are uniformly arranged on the inner wall of the lower end of the inner sleeve, the outer wall of each limiting column is sleeved with a limiting spring, the clamping jaws are sleeved on the outer wall of each limiting column in a sliding fit mode, and the top ends of the clamping jaws are connected through a protective disc; the lower extreme of pencil post is fixed with the upper end cooperation of protection dish to the inner skleeve that the lower extreme and the inner skleeve bottom inner wall contact friction that effectively prevents the pencil post through the effect of spacing spring jacking jack catch caused rotates inhomogeneously.

The fixing unit comprises a fixing loop bar, a fixing spring and a fixing disc, the fixing loop bar is arranged on the outer sleeve in a sliding fit mode, one end of the fixing loop bar positioned on the outer wall of the outer sleeve is connected with the fixing disc, the outer wall of the fixing loop bar in the outer sleeve is sleeved with the fixing spring, one end of the fixing loop bar positioned in the outer sleeve is provided with a ball in a movable connection mode, and one end of the fixing loop bar in the outer sleeve is matched with the side wall of the inner sleeve in a sliding fit mode; the top end of the fixed loop bar is matched with the side wall of the inner sleeve through the action that the fixed spring is abutted against the fixed loop bar, so that the stability of the inner sleeve in the rotating process is kept; the overflow of the internal pickling solution caused by the rotation deflection of the inner sleeve is effectively prevented.

The cover clamping unit comprises a lifting cylinder, a guide post rod, a guide wire spring, an L-shaped claw, a cover plate and an inner sleeve cover; the lifting cylinders are uniformly arranged at the lower end of the supporting seat, the top ends of the lifting cylinders are respectively connected to the L-shaped claws, the L-shaped claws are arranged on the outer walls of the guide posts in a sliding fit mode, the outer walls of the guide posts are sleeved with wire springs, and the guide posts are uniformly arranged on the side walls of the wire bundling posts; the lower end of the L-shaped claw is connected to the outer wall of the upper end of the cover plate through a bearing, and an inner sleeve cover is arranged on the outer wall of the lower end of the cover plate; the side wall of the cover plate is uniformly provided with balls in a movable connection mode; the cover plate is pushed to be covered with the top end of the outer sleeve through the lifting cylinder, and the upper end of the inner sleeve is kept covered through the inner sleeve cover; thereby preventing the overflow of the pickling solution in the inner sleeve in the process of pickling the coiled wire by rotating and stirring.

The coil clamping unit comprises a fixed clamping bolt, a U-shaped clamping jaw, a connecting loop bar, an arc-shaped chuck, an actuating spring and a pull rope; the fixed clamping bolt is uniformly arranged on the outer wall of the bunching column in a threaded connection mode, a U-shaped clamping jaw is arranged on the outer wall of the fixed clamping bolt, the top end of the U-shaped clamping jaw is sleeved in a clamping groove of the connecting sleeve rod, an actuating spring is sleeved on the outer wall of the connecting sleeve rod, and the top end of the connecting sleeve rod is connected with an arc-shaped chuck; the pull rope sequentially penetrates through the wire bundling column, the connecting sleeve rod and the U-shaped clamping jaw to be connected to the outer wall of the arc-shaped chuck; the distance between two relative arc chucks is adjusted to the pulling stay cord, passes through the fixed stability of loosening the further maintenance lapping wire of stay cord of arc chuck joint with the lapping wire through the manual work afterwards.

The plug-in module comprises a plug-in bolt and an electric sliding block; the electric sliding block is arranged on the inner wall of the bottom end of the inner sleeve, and the electric sliding block is provided with a plug bolt; when the pickling solution in the inner sleeve needs to be discharged and removed, the electric sliding block drives the plug bolt to move to open the diversion hole at the lower end of the inner sleeve, and then the pickling solution in the inner sleeve is completely discharged.

Preferably; the outer wall of the bottom end of the inner sleeve is of a structure with a slightly raised middle part; the middle part of the outer wall of the bottom end of the inner sleeve is provided with a slightly convex structure, so that the pickling solution in the inner sleeve can be completely emptied; further ensuring the cleanness of the inner part of the inner sleeve.

The invention has the beneficial effects that:

the auxiliary device is used for containing a certain amount of pickling solution, when the pickling solution in the inner sleeve needs to be emptied, the inserting module is operated to control the containing and the discharging of the pickling solution in the inner sleeve, and the stability of the inner sleeve in the rotating process is kept through the limiting ring and the fixing unit;

the lower end of the wire bundling column is matched and fixed with the upper end of the protective disc, and the inner sleeve is prevented from rotating unevenly due to contact friction between the lower end of the wire bundling column and the inner wall of the bottom end of the inner sleeve under the action of the limiting spring jacking clamping jaw;

thirdly, the top end of the fixed loop bar is matched with the side wall of the inner sleeve through the action that the fixed spring props against the fixed loop bar, so that the stability of the inner sleeve in the rotating process is kept; the overflow of the internal pickling solution caused by the rotation deflection of the inner sleeve is effectively prevented.

Drawings

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

FIG. 1 is a flow chart of the surface treatment process after the metal wire is drawn and formed according to the present invention;

FIG. 2 is a front sectional view of the present invention in position between the base cylinder, the auxiliary device, the fixing device and the coiled wire;

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

fig. 4 is a partial enlarged view of the invention at B in fig. 2.

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 4, a surface treatment process after metal wire rod stretch forming, specifically, the surface treatment process after metal wire rod stretch forming includes the following steps:

s1, acid washing solution injection: after being uniformly stirred, a proper amount of pickling solution is injected into the inner sleeve 23, and the inner sleeve 23 is driven to circumferentially and uniformly rotate under the action of the adjusting motor 29, so that the pickling solution in the inner sleeve is uniformly stirred;

s2, fixing the wire: manually placing the coiled wires 4 to be pickled on the fixing device 3 in sequence for fixing, and firmly fixing the coiled wires 4 which are intermittently and fixedly arranged through the fixing device 3;

s3, pickling the wire: placing a plurality of coils 4 to be pickled, which are fixed at the upper end, in the inner sleeve 23 through the fixing device 3, and pickling the coils 4 at the upper end through a pickling solution in the inner sleeve 23; thereby keeping the surface of the coiled wire 4 clean;

the surface treatment after metal wire stretch forming in the steps of the surface treatment after metal wire stretch forming S1-S3 needs to be composed of a bottom cylinder 1, an auxiliary device 2, a fixing device 3 and a coiled wire 4; wherein:

the lower end of the bottom barrel 1 is provided with a flow guide hole, the inner wall of the bottom end of the bottom barrel 1 is provided with an auxiliary device 2, the side wall of the bottom barrel 1 is provided with a fixing device 3, and the fixing device 3 is matched with the top end of the bottom barrel 1; and the fixing device 3 is uniformly provided with coiled wires 4 to be pickled; the auxiliary device 2 is internally provided with pickling solution.

The auxiliary device 2 comprises a support column 21, an outer sleeve 22, an inner sleeve 23, a protection unit 24, a flow guide pipe 25, a flow guide convex ring 26, a limiting cylinder 27, a limiting ring 28, an adjusting motor 29, a fixing unit 20 and a plug-in module 2X; the utility model discloses a spacing ring of a motor vehicle engine, including support column 21, outer sleeve 22, adjusting motor 29, inner sleeve 23, spacer sleeve 23, spacing ring 27, outer wall of spacing ring 28, the bottom inner wall of outer sleeve 22 is installed to the bottom inner wall of support column 21, outer sleeve 22 cover establish at end 1 inside, outer sleeve 22 and end 1 the water conservancy diversion hole between be connected through honeycomb duct 25, adjusting motor 29 is installed through the motor cabinet to the bottom inner wall of outer sleeve 22, flange joint is passed through at the bottom outer wall of inner sleeve 23 on the top of adjusting motor 29, inner sleeve 23 cover establish in the inside of outer sleeve 22, and the bottom outer wall installation spacing ring 28 of inner sleeve 23, spacing ring 28 lower extreme outer wall evenly be provided with the ball through the clearance fit mode, and the lower extreme of spacing ring 28 passes through the sliding fit mode and installs in the bottom of outer sleeve 22, the bottom that is located, the flow guide convex ring 26 is positioned on the outer ring of the limiting cylinder 27, the fixing units 20 are uniformly arranged on the side wall of the outer sleeve 22 in a sliding fit manner, and the fixing units 20 are matched with the outer side wall of the inner sleeve 23; the inner side wall of the bottom end of the inner sleeve 23 is provided with a protection unit 24 in a sliding fit mode; the outer wall of the bottom end of the inner sleeve 23 is of a slightly convex structure at the middle part; the middle part of the outer wall of the bottom end of the inner sleeve 23 is provided with a slightly convex structure, so that the pickling solution in the inner part can be completely emptied; the cleanness of the inner part of the inner sleeve 23 is further ensured; the plug-in module 2X is arranged at a material leakage hole at the bottom end of the inner sleeve 23; through the auxiliary device 2 splendid attire a certain amount of pickle that sets up, and when the inside pickle of needs evacuation, through the splendid attire and the discharge of the inside pickle of grafting module 2X operation control inner sleeve 23 to keep the stability of inner sleeve 23 rotation in-process through spacing ring 28 and fixed unit 20.

The protection unit 24 comprises a limiting column 241, a limiting spring 242, a clamping jaw 243 and a protection disc 244; the limiting columns 241 are uniformly arranged on the inner wall of the lower end of the inner sleeve 23, the limiting springs 242 are sleeved on the outer walls of the limiting columns 241, the clamping jaws 243 are sleeved on the outer walls of the limiting columns 241 in a sliding fit mode, and the top ends of the clamping jaws 243 are connected through the protective disc 244; the lower end of the wire binding post 35 is fixed with the upper end of the protection disc 244 in a matching way, and the action of the jacking claws 243 of the limiting springs 242 effectively prevents the inner sleeve 23 from rotating unevenly due to the contact friction between the lower end of the wire binding post 35 and the inner wall of the bottom end of the inner sleeve 23.

The fixing unit 20 comprises a fixing loop bar 201, a fixing spring 202 and a fixing disc 203, the fixing loop bar 201 is arranged on the outer sleeve 22 in a sliding fit mode, one end of the fixing loop bar 201, which is positioned on the outer wall of the outer sleeve 22, is connected with the fixing disc 203, the outer wall of the fixing loop bar 201 in the outer sleeve 22 is sleeved with the fixing spring 202, one end of the fixing loop bar 201 in the outer sleeve 22 is provided with a ball in a movable connection mode, and one end of the fixing loop bar 201 in the outer sleeve 22 is matched with the side wall of the inner sleeve 23 in a sliding fit mode; the top end of the fixed loop bar 201 is matched with the side wall of the inner sleeve 23 through the action of the fixed spring 202 abutting against the fixed loop bar 201, so that the stability of the inner sleeve 23 in the rotating process is kept; the overflow of the internal pickling solution caused by the rotational deflection of the inner sleeve 23 is effectively prevented.

The fixing device 3 comprises a lower clamping plate 31, an adjusting cylinder 32, an upper clamping plate 33, a supporting seat 34, a wire bundling column 35, a clamping cover unit 36 and a coil clamping unit 37; the upper end of the lower clamping plate 31 is symmetrically provided with adjusting cylinders 32, the top end of each adjusting cylinder 32 is provided with an upper clamping plate 33, the outer wall of the middle part of the lower end of each upper clamping plate 33 is provided with a supporting seat 34, the lower end of each supporting seat 34 is provided with a wire bundling column 35, the clamping cover unit 36 is sleeved on the outer wall of the upper end of each wire bundling column 35, and the clamping cover unit 36 is connected with the lower end of each supporting seat 34; the outer wall of the lower end of the wire bundling column 35 is uniformly provided with coil clamping units 37; the bottom ends of the wire harness columns 35 are uniformly provided with balls in a movable connection mode; the coiled wire 4 is placed into the inner sleeve 23 containing the pickling solution through the lifting adjustment of the adjusting cylinder 32, and the pickling of the coiled wire 4 is fully completed.

The cover clamping unit 36 comprises a lifting cylinder 361, a guide post 362, a wire spring 363, an L-shaped claw 364, a cover plate 365 and an inner sleeve cover 366; the lifting cylinders 361 are uniformly arranged at the lower end of the supporting seat 34, the top ends of the lifting cylinders 361 are respectively connected to the L-shaped claws 364, the L-shaped claws 364 are arranged on the outer wall of the guide post rod 362 in a sliding fit manner, the outer wall of the guide post rod 362 is sleeved with a lead spring 363, and the guide post rods 362 are uniformly arranged on the side wall of the wire binding post 35; the lower end of the L-shaped claw 364 is connected with the outer wall of the upper end of the cover plate 365 through a bearing, and the outer wall of the lower end of the cover plate 365 is provided with an inner sleeve cover 366; the side wall of the cover plate 365 is uniformly provided with balls in a movable connection mode; the cover plate 365 is pushed to be covered with the top end of the outer sleeve 22 through the lifting air cylinder 361, and the upper end of the inner sleeve 23 is kept covered through the inner sleeve cover 366; thereby preventing the overflow of the pickling solution in the inner sleeve 23 during the pickling of the coiled wire 4 by rotating and stirring the pickling solution.

The coil clamping unit 37 comprises a fixed clamping bolt 371, a U-shaped clamping jaw 372, a connecting sleeve rod 373, an arc-shaped clamping chuck 374, an actuating spring 375 and a pull rope 376; the fixed clamping bolt 371 is uniformly arranged on the outer wall of the wire harness column 35 in a threaded connection mode, a U-shaped clamping jaw 372 is arranged on the outer wall of the fixed clamping bolt 371, the top end of the U-shaped clamping jaw 372 is sleeved in a clamping groove of a connecting sleeve rod 373, an actuating spring 375 is sleeved on the outer wall of the connecting sleeve rod 373, and an arc-shaped clamping chuck 374 is connected to the top end of the connecting sleeve rod 373; the pull rope 376 sequentially penetrates through the wire bundling column 35, the connecting sleeve rod 373 and the U-shaped clamping jaw 372 and is connected to the outer wall of the arc-shaped clamping chuck 374; the pulling rope 376 is pulled to adjust the distance between the two opposite arc-shaped chucks 374, and then the pulling rope 376 is manually clamped and fixed by the arc-shaped chucks 374 to release the stability of the coiled wire 4.

The plug-in module 2X comprises a plug-in bolt 2X1 and an electric slider 2X 2; the electric sliding block 2X2 is arranged on the inner wall of the bottom end of the inner sleeve 23, and the electric sliding block 2X2 is provided with a plug bolt 2X 1; when the pickling solution in the inner sleeve 23 needs to be discharged and removed, the electric slider 2X2 drives the plug 2X1 to move to open the diversion hole at the lower end of the inner sleeve 23, so that the pickling solution in the inner sleeve is completely discharged.

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.

Claims

1. A surface treatment process after metal wire drawing forming is characterized in that: the specific steps of surface treatment after the metal wire rod is stretched and formed are as follows:

s1, acid washing solution injection: after being uniformly stirred, a proper amount of pickling solution is injected into the inner sleeve (23), and the inner sleeve (23) is driven to rotate uniformly in the circumferential direction under the action of the adjusting motor (29), so that the pickling solution in the inner part is uniformly stirred;

s2, fixing the wire: manually placing the coiled wires (4) to be pickled on the fixing device (3) in sequence for fixing, and firmly fixing the coiled wires (4) which are intermittently and fixedly arranged through the fixing device (3);

s3, pickling the wire: placing a plurality of coils (4) to be pickled, which are fixed at the upper end, in the inner sleeve (23) through the fixing device (3), and pickling the coils (4) at the upper end through a pickling solution in the inner sleeve (23); thereby keeping the surface of the coiled wire (4) clean;

the surface treatment after metal wire drawing forming in the steps S1-S3 of the surface treatment after metal wire drawing forming needs to be composed of a bottom cylinder (1), an auxiliary device (2), a fixing device (3) and a coiled wire (4); wherein:

the lower end of the bottom barrel (1) is provided with a flow guide hole, the inner wall of the bottom end of the bottom barrel (1) is provided with an auxiliary device (2), the side wall of the bottom barrel (1) is provided with a fixing device (3), and the fixing device (3) is matched with the top end of the bottom barrel (1); and the fixing device (3) is uniformly provided with coiled wires (4) to be pickled; a pickling solution is arranged in the auxiliary device (2);

the auxiliary device (2) comprises a support column (21), an outer sleeve (22), an inner sleeve (23), a protection unit (24), a flow guide pipe (25), a flow guide convex ring (26), a limiting cylinder (27), a limiting ring (28), an adjusting motor (29), a fixing unit (20) and an inserting module (2X); the utility model discloses a spacing device of a motor vehicle, including support column (21), outer sleeve (22), motor seat, regulating motor (29), flange joint, inner sleeve (23), spacing ring (28) is installed to the bottom outer wall of inner sleeve (28) through the clearance fit mode, and the lower extreme of spacing ring (28) installs the bottom of outer sleeve (22) through the sliding fit mode in the bottom of outer sleeve (22), the upper end of support column (21) evenly set up at end section of thick bamboo (1) bottom inner wall, and the outer sleeve (22) is installed to the upper end of support column (21), outer sleeve (22) cover establish at end section of thick bamboo (1) inside, the bottom inner wall of outer sleeve (22) between be connected through honeycomb duct (25), regulating motor (29) is installed through the motor cabinet to the bottom inner wall of outer sleeve (22), the bottom outer wall installation spacing ring (28) of inner sleeve (23), spacing ring (28) lower extreme outer wall, the limiting cylinder (27) is sleeved on the outer wall of the limiting ring (28), a flow guide convex ring (26) is arranged on the inner wall of the bottom end of the outer sleeve (22), the flow guide convex ring (26) is arranged on the outer ring of the limiting cylinder (27), fixing units (20) are uniformly arranged on the side wall of the outer sleeve (22) in a sliding fit mode, and the fixing units (20) are matched with the outer side wall of the inner sleeve (23); the inner side wall of the bottom end of the inner sleeve (23) is provided with a protection unit (24) in a sliding fit mode; the plug-in module (2X) is arranged at a material leakage hole at the bottom end of the inner sleeve (23);

the fixing device (3) comprises a lower clamping plate (31), an adjusting cylinder (32), an upper clamping plate (33), a supporting seat (34), a wire binding column (35), a clamping cover unit (36) and a coil clamping unit (37); adjusting cylinders (32) are symmetrically arranged at the upper end of the lower clamping plate (31), an upper clamping plate (33) is mounted at the top end of each adjusting cylinder (32), a supporting seat (34) is mounted on the outer wall of the middle of the lower end of each upper clamping plate (33), a wire bundling column (35) is mounted at the lower end of each supporting seat (34), the clamping cover unit (36) is sleeved on the outer wall of the upper end of each wire bundling column (35), and the clamping cover unit (36) is connected with the lower ends of the supporting seats (34); the outer wall of the lower end of the wire bundling post (35) is uniformly provided with a coil clamping unit (37); the bottom end of the wire harness column (35) is uniformly provided with balls in a movable connection mode.

2. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: the protection unit (24) comprises a limiting column (241), a limiting spring (242), a clamping jaw (243) and a protection disc (244); spacing post (241) evenly set up the lower extreme inner wall of interior sleeve (23), and the outer wall cover of spacing post (241) is equipped with spacing spring (242), jack catch (243) establish the outer wall at spacing post (241) through sliding fit mode, and the top of jack catch (243) is connected through protection dish (244).

3. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: fixed unit (20) including fixed loop bar (201), fixed spring (202) and fixed disk (203), fixed loop bar (201) set up on outer sleeve (22) through the sliding fit mode, fixed loop bar (201) one end that is located outer sleeve (22) outer wall is connected with fixed disk (203), the inside fixed loop bar (201) outer wall cover of outer sleeve (22) is equipped with fixed spring (202), is located fixed loop bar (201) one end of outer sleeve (22) inside and installs the ball through the swing joint mode, and fixed loop bar (201) one end of outer sleeve (22) inside mutually supports through the sliding fit mode with inner sleeve (23) lateral wall through the sliding fit mode.

4. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: the clamping cover unit (36) comprises a lifting cylinder (361), a guide post rod (362), a lead spring (363), an L-shaped claw (364), a cover plate (365) and an inner sleeve cover (366); the lifting cylinders (361) are uniformly arranged at the lower end of the supporting seat (34), the top ends of the lifting cylinders (361) are respectively connected onto the L-shaped claws (364), the L-shaped claws (364) are arranged on the outer wall of the guide post rod (362) in a sliding fit mode, the outer wall of the guide post rod (362) is sleeved with a wire spring (363), and the guide post rod (362) is uniformly arranged on the side wall of the wire binding post (35); the lower end of the L-shaped claw (364) is connected to the outer wall of the upper end of the cover plate (365) through a bearing, and the outer wall of the lower end of the cover plate (365) is provided with an inner sleeve cover (366); the side wall of the cover plate (365) is evenly provided with balls in a movable connection mode.

5. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: the coil clamping unit (37) comprises a fixed clamping bolt (371), a U-shaped clamping jaw (372), a connecting sleeve rod (373), an arc-shaped clamping chuck (374), an actuating spring (375) and a pull rope (376); the fixed clamping bolt (371) is uniformly arranged on the outer wall of the wire bundling column (35) in a threaded connection mode, a U-shaped clamping jaw (372) is arranged on the outer wall of the fixed clamping bolt (371), the top end of the U-shaped clamping jaw (372) is sleeved in a clamping groove of a connecting sleeve rod (373), an actuating spring (375) is sleeved on the outer wall of the connecting sleeve rod (373), and an arc-shaped clamping chuck (374) is connected to the top end of the connecting sleeve rod (373); the pull rope (376) sequentially penetrates through the wire bundling column (35), the connecting sleeve rod (373), the U-shaped clamping jaw (372) and is connected to the outer wall of the arc-shaped clamping chuck (374).

6. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: the plug-in module (2X) comprises a plug-in bolt (2X1) and an electric slider (2X 2); the electric sliding block (2X2) is arranged on the inner wall of the bottom end of the inner sleeve (23), and the electric sliding block (2X2) is provided with a plug bolt (2X 1).

7. The surface treatment process for the metal wire rod after the stretching forming according to claim 1, wherein: the outer wall of the bottom end of the inner sleeve (23) is of a structure with a slightly raised middle part.