Pre-deformation device

Abstract

The utility model relates to a pre-deformation device which is arranged on a stranding machine among four pay-off wheels and comprises a support, a front wire passing wheel set, a middle wire passing wheel unit and a pre-deformation unit, the front wire passing wheel set is arranged in front of the support, and the front wire passing wheel set comprises two front wire passing wheels which are arranged in an up-down rotating mode; a middle wire passing wheel unit is arranged in the middle of the support and comprises a mounting plate and middle wire passing wheel sets, the mounting plate is arranged on the support in a front-back moving mode, the mounting plate and the support are perpendicularly arranged, the middle wire passing wheel sets are arranged at the left end and the right end of the mounting plate, and each middle wire passing wheel set comprises two middle wire passing wheels arranged in an up-down rotating mode; a pre-deformation unit is arranged behind the support and comprises a wide-groove wire feeding wheel, a deformation roller and a V-groove wire discharging wheel which are sequentially arranged from front to back, and the deformation roller is arranged on the support in an up-down adjustable mode. The full mechanical deformation of the cord thread can be realized, various stresses are eliminated, and the quality of a steel cord thread product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pre - deformer, in particular to a pre - deformation device. Background Art

[0002] UT cord is a kind of super - high - strength steel cord. Before the cord is payed off on a stranding machine and twisted into shape, it needs to be pre - deformed first. The pre - deformation is carried out by a pre - deformer. After the cord passes through the pre - deformer, the cord can be fully mechanically deformed and various internal stresses can be eliminated, thereby reducing the twisting stress and residual stress generated during the twisting process, and thus improving the quality of the steel cord.

[0003] When our unit developed super - high - strength steel cord, four electroplated brass steel wires were used. The electroplated brass steel wires were respectively wound around four pay - off wheels. After the electroplated brass steel wires on the pay - off wheels were led out, they were uniformly bypassed through the pre - deformer and then introduced into the stranding machine. The authorized publication number CN201031324Y discloses a steel cord stranding rolling pre - deformer, which can realize the pre - deformation of the steel cord, but it is difficult to uniformly bypass four electroplated brass steel wires through the pre - deformer for unified pre - deformation. Summary of the Invention

[0004] The utility model aims to solve the problem that a conventional pre - deformer is difficult to realize the unified pre - deformation of multiple cords, and provides a pre - deformation device, which can realize the simultaneous introduction of four cords into the pre - deformer, realize the unified deformation of the cords, and meet the uniformity requirement of the cord to reach the openness index.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A pre - deformation device is arranged on a stranding machine between four pay - off wheels, and includes a support, a front wire - passing wheel group, a middle wire - passing wheel unit and a pre - deformation unit. The front wire - passing wheel group is arranged in front of the support, and the front wire - passing wheel group includes two front wire - passing wheels arranged to rotate up and down.

[0007] The middle wire - passing wheel unit is arranged in the middle of the support. The middle wire - passing wheel unit includes a mounting plate and a middle wire - passing wheel group. The mounting plate is movably arranged on the support in the front - rear direction. The mounting plate and the support are vertically arranged. The middle wire - passing wheel group is arranged at both the left and right ends of the mounting plate. The middle wire - passing wheel group includes two middle wire - passing wheels arranged to rotate up and down.

[0008] The pre - deformation unit is arranged behind the support. The pre - deformation unit includes a wide - groove wire - feeding wheel, a deformation roller and a V - groove wire - discharging wheel arranged in sequence from front to back. The deformation roller is arranged on the support in an adjustable up - and - down manner, which is convenient for changing the pre - deformation amount. The wide - groove wire - feeding wheel and the V - groove wire - discharging wheel are arranged at the same height and protrude from the upper surface of the support to avoid the support interfering with the cord entering the wide - groove wire - feeding wheel.

[0009] Further, the support is of a linear frame structure with a certain length. The support includes a front support plate and a rear seat plate connected integrally front and back. The rear seat plate includes a top plate and a bottom plate. The cross-section of the top plate is in an "L" shape, the top plate is horizontally arranged, the bottom plate is horizontally arranged below the top plate, and the front support plate is horizontally arranged at one end of the top plate.

[0010] Further, at one end of the front support plate away from the rear seat plate, a front wire passing wheel set is arranged. Both of the two front wire passing wheels in the front wire passing wheel set are of V-groove bearing structures, and the two front wire passing wheels are respectively an upper front wire passing wheel and a lower front wire passing wheel.

[0011] A front support column is further arranged at the end of the front support plate. The upper front wire passing wheel and the lower front wire passing wheel are arranged in parallel up and down above the front support column. The front support column connects the upper front wire passing wheel and the lower front wire passing wheel through bolts, which facilitates the installation of the front wire passing wheel set and the rotation of the front wire passing wheels.

[0012] Further, an adjustment hole is formed in the front support plate. The adjustment hole is an elongated hole and is arranged along the length direction of the front support plate, which facilitates the movement of the installation plate. The installation plate is movably arranged on the front support plate, and the installation plate is perpendicular to the front support plate.

[0013] A clamping groove is formed on the lower end surface of the installation plate. The clamping groove is clamped on the front support plate and moves back and forth along the front support plate, which is convenient for preventing the installation plate from rotating and restricting the installation plate to always be perpendicular to the front support plate. An adjustment bolt is arranged between the installation plate and the front support plate. The adjustment bolt vertically passes through the adjustment hole, which facilitates the fixation of the installation plate.

[0014] Further, both of the two middle wire passing wheels in the middle wire passing wheel set are of V-groove bearing structures. The two middle wire passing wheels located at the left end of the installation plate are respectively an upper left middle wire passing wheel and a lower left middle wire passing wheel, and the two middle wire passing wheels located at the right end of the installation plate are respectively an upper right middle wire passing wheel and a lower right middle wire passing wheel.

[0015] Further, a left support column and a right support column are respectively arranged at the left and right ends of the installation plate. The upper left middle wire passing wheel and the lower left middle wire passing wheel are arranged up and down above the left support column, and the left support column connects the upper left middle wire passing wheel and the lower left middle wire passing wheel through bolts;

[0016] The upper right middle wire passing wheel and the lower right middle wire passing wheel are arranged up and down above the right support column, and the right support column connects the upper right middle wire passing wheel and the lower right middle wire passing wheel through bolts. The installation method of the middle wire passing wheel set and the installation plate is the same as that of the front wire passing wheel set and the front support plate.

[0017] Further, the pre-deformation unit is arranged on the rear seat plate, and a wide-groove wire inlet wheel, a deformation roller, and a V-groove wire outlet wheel arranged in a straight line are sequentially arranged in the front and rear of the top plate. The wide-groove wire inlet wheel is of a trapezoidal groove bearing structure and is fixedly connected to the top plate by bolts. The V-groove wire outlet wheel is of a V-shaped groove bearing structure, and the groove width of the V-groove wire outlet wheel is smaller than that of the wide-groove wire inlet wheel, which facilitates the entry of cord wires in different directions into the wide-groove wire inlet wheel together. The V-groove wire outlet wheel is fixedly connected to the top plate by bolts. The positions of the V-groove wire outlet wheel and the wide-groove wire inlet wheel are fixed, and they can rotate themselves.

[0018] Further, an adjustment groove is opened on the top plate. The adjustment groove is a rectangular groove and is arranged between the wide-groove wire inlet wheel and the V-groove wire outlet wheel, which facilitates providing a position space for the movement of the deformation roller. A scale line for indicating the depth of the adjustment groove is also provided on the top plate;

[0019] A deformation slider is slidably arranged up and down in the adjustment groove, and the scale line also facilitates indicating the position of the deformation slider. The cross-section of the deformation slider is in the shape of a "work" character. A locking bolt is arranged on the deformation slider, and the head of the locking bolt abuts against the side wall of the top plate, which facilitates the fixing of the position of the deformation slider. The deformation roller is rotatably arranged on the deformation slider, and the deformation roller, the wide-groove wire inlet wheel, and the V-groove wire outlet wheel are arranged in an isosceles triangle in the up and down direction.

[0020] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0021] The structure of the present utility model is reasonably designed. The position of the front wire passing wheel group is fixed, and the position of the middle wire passing wheel unit is adjustable. The mounting plate bears the two middle wire passing wheel groups, and the mounting plate can move back and forth on the front support plate, which facilitates adjusting its position. The mounting plate and the front support plate are perpendicular to each other. Using the front wire passing wheel group and the two middle wire passing wheel groups can conveniently introduce four cord wires in different directions into the pre-deformation unit and match the best routing path for each cord wire.

[0022] The pre-deformation unit of the present utility model can fully cause the cord wire to undergo a certain amount of bending deformation. The wide-groove wire inlet wheel has a relatively large groove width and can introduce cord wires from different directions into the pre-deformation unit. At the same time, the wide-groove wire inlet wheel protrudes upward from the upper plane of the support seat, which can avoid the interference of the support seat on the cord wire and ensure the normal operation of the cord wire. The cord wire sequentially bypasses the wide-groove wire inlet wheel, the deformation roller, and the V-groove wire outlet wheel. The position of the deformation roller is adjustable up and down, which facilitates changing the deformation amount of the cord wire. The deformation roller can rotate, reducing the friction between the cord wire and the deformation roller. Description of the Drawings

[0023] Figure 1 It is a top view of the installation state of a pre-deformation device of the present utility model.

[0024] Figure 2It is the top view of a pre-deformation device of the present utility model.

[0025] Figure 3 It is the side view of a pre-deformation device of the present utility model.

[0026] Figure 4 It is the top view of the middle wire-passing wheel unit of a pre-deformation device of the present utility model.

[0027] Figure 5 It is the front view of the middle wire-passing wheel unit of a pre-deformation device of the present utility model.

[0028] Figure 6 It is the split top view of the pre-deformation unit of a pre-deformation device of the present utility model.

[0029] Figure 7 It is the schematic diagram of the cord winding on the first wire-passing wheel of a pre-deformation device of the present utility model.

[0030] Figure 8 It is the schematic diagram of the cord winding on the second wire-passing wheel of a pre-deformation device of the present utility model.

[0031] Figure 9 It is the schematic diagram of the cord winding on the third wire-passing wheel of a pre-deformation device of the present utility model.

[0032] Figure 10 It is the schematic diagram of the cord winding on the fourth wire-passing wheel of a pre-deformation device of the present utility model.

[0033] Figure 11 It is the schematic diagram of the cord winding on the pre-deformation unit of a pre-deformation device of the present utility model.

[0034] The reference numerals in the drawings are: 1 wire pay-off reel, 2 support, 21 front support plate, 22 rear seat plate, 221 top plate, 222 bottom plate, 3 front wire-passing wheel group, 31 front wire-passing wheel, 311 upper front wire-passing wheel, 312 lower front wire-passing wheel, 4 middle wire-passing wheel unit, 41 mounting plate, 42 middle wire-passing wheel group, 5 pre-deformation unit, 51 wide-groove wire-inlet wheel, 52 deformation roller, 53 V-groove wire-outlet wheel, 6 front support column, 7 adjustment hole, 8 adjustment bolt, 9 clamping groove, 10 middle wire-passing wheel, 101 upper left middle wire-passing wheel, 102 lower left middle wire-passing wheel, 103 upper right middle wire-passing wheel, 104 lower right middle wire-passing wheel, 11 left support column, 12 right support column, 13 adjustment slot, 14 scale line, 15 deformation slider, 16 locking bolt. Specific embodiments

[0035] The following makes a detailed description of the specific embodiments of the present utility model in conjunction with the drawings:

[0036] As Figures 1 to 11As shown in the figure, a pre-deformation device is arranged on a stranding machine between four pay-off reels 1, and can introduce the electroplated brass wires on the four pay-off reels 1 together and perform unified pre-deformation. The pre-deformation device includes a support 2, a front wire-passing wheel group 3, a middle wire-passing wheel unit 4 and a pre-deformation unit 5, as Figure 1 and Figure 2 shown.

[0037] The support 2 is the foundation of the entire pre-deformation device, which is used to carry the front wire-passing wheel group 3, the middle wire-passing wheel unit 4 and the pre-deformation unit 5. The functions of the front wire-passing wheel group 3 and the middle wire-passing wheel unit 4 are to wind the cord on the four pay-off reels 1 and introduce the four cords into the pre-deformation unit 5 uniformly.

[0038] In this embodiment, the support 2 is of a straight-frame structure, which can be understood as the support 2 being long-strip-shaped. The support 2 includes a front support plate 21 and a rear seat plate 22 that are connected together front and back, as Figure 3 shown. The rear seat plate 22 includes a top plate 221 and a bottom plate 222. The cross-section of the top plate 221 is in an "L" shape, the top plate 221 is horizontally arranged, and the bottom plate 222 is horizontally arranged below the top plate 221, which is equivalent to enclosing the lower part of the top plate 221. One end of the top plate 221 is horizontally provided with the front support plate 21.

[0039] The front wire-passing wheel group 3 is arranged in front of the support 2, that is, the front wire-passing wheel group 3 is arranged at the end of the front support plate 21 away from the rear seat plate 22. The front wire-passing wheel group 3 includes two front wire-passing wheels 31 that are arranged to rotate up and down. Both of the two front wire-passing wheels 31 in the front wire-passing wheel group 3 are of V-groove bearing structures, and the two front wire-passing wheels 31 are respectively an upper front wire-passing wheel 311 and a lower front wire-passing wheel 312.

[0040] When the front wire-passing wheel group 3 is installed, a front support column 6 is also provided at the end of the front support plate 21. The upper front wire-passing wheel 311 and the lower front wire-passing wheel 312 are arranged parallel to each other up and down above the front support column 6. The front support column 6 connects the upper front wire-passing wheel 311 and the lower front wire-passing wheel 312 through bolts, and both the upper front wire-passing wheel 311 and the lower front wire-passing wheel 312 can rotate on the bolts. At the same time, a shaft sleeve is arranged on the bolt between the upper front wire-passing wheel 311 and the lower front wire-passing wheel 312, and the purpose is to separate the upper front wire-passing wheel 311 and the lower front wire-passing wheel 312 up and down.

[0041] The middle wire-passing wheel unit 4 is arranged in the middle of the support 2, that is, the middle wire-passing wheel unit 4 is arranged on the front support plate 21. The middle wire-passing wheel unit 4 includes a mounting plate 41 and a middle wire-passing wheel group 42. The mounting plate 41 is movably arranged front and back on the support 2, and thus the position of the mounting plate 41 is adjustable front and back. The mounting plate 41 and the support 2 are arranged vertically. When the mounting plate 41 is installed, an adjustment hole 7 is opened on the front support plate 21. The adjustment hole 7 is an elongated hole, and the adjustment hole 7 is arranged along the length direction of the front support plate 21. The mounting plate 41 is movably arranged on the front support plate 21, and the mounting plate 41 and the front support plate 21 are perpendicular to each other.

[0042] To fix the mounting plate 41, the mounting plate 41 and the front support plate 21 are provided with adjusting bolts 8. The adjusting bolts 8 are equipped with nuts, and the adjusting bolts 8 vertically pass through the adjusting holes 7. After tightening the adjusting bolts 8, the fixation of the mounting plate 41 can be ensured. Once the adjusting bolts 8 are loosened, the mounting plate 41 can move forward and backward within the range of the adjusting holes 7 to adjust its position. Meanwhile, a clamping groove 9 is formed on the lower end surface of the mounting plate 41. The clamping groove 9 is clamped on the front support plate 21 and moves forward and backward along the front support plate 21, ensuring that the mounting plate 41 does not rotate and ensuring the perpendicular state of the mounting plate 41 and the front support plate 21.

[0043] Middle wire passing wheel sets 42 are arranged at both the left and right ends of the mounting plate 41. The middle wire passing wheel sets 42 are at the same height as the front wire passing wheel set 3. The middle wire passing wheel set 42 includes two middle wire passing wheels 10 arranged to rotate up and down. Both of the two middle wire passing wheels 10 in the middle wire passing wheel set 42 are of V-groove bearing structure, as Figure 4 and Figure 5 shown. Specifically, the two middle wire passing wheels 10 at the left end of the mounting plate 41 are respectively the upper left middle wire passing wheel 101 and the lower left middle wire passing wheel 102, and the two middle wire passing wheels 10 at the right end of the mounting plate 41 are respectively the upper right middle wire passing wheel 103 and the lower right middle wire passing wheel 104.

[0044] When installing the upper left middle wire passing wheel 101 and the lower left middle wire passing wheel 102, left support pillars 11 and right support pillars 12 are respectively arranged at both the left and right ends of the mounting plate 41. The upper left middle wire passing wheel 101 and the lower left middle wire passing wheel 102 are arranged vertically above the left support pillar 11, and the left support pillar 11 connects the upper left middle wire passing wheel 101 and the lower left middle wire passing wheel 102 through bolts. Here, the installation structure of the upper left middle wire passing wheel 101 and the lower left middle wire passing wheel 102 is the same as that of the aforementioned front wire passing wheel set 3 and the front support pillar 6, and will not be elaborated here.

[0045] When installing the upper right middle wire passing wheel 103 and the lower right middle wire passing wheel 104, the upper right middle wire passing wheel 103 and the lower right middle wire passing wheel 104 are arranged vertically above the right support pillar 12, and the right support pillar 12 connects the upper right middle wire passing wheel 103 and the lower right middle wire passing wheel 104 through bolts. Here, the installation structure of the upper right middle wire passing wheel 103 and the lower right middle wire passing wheel 104 is the same as that of the aforementioned front wire passing wheel set 3 and the front support pillar 6, and will not be elaborated here.

[0046] A pre-deformation unit 5 is arranged behind the support 2, that is, the pre-deformation unit 5 is arranged on the rear seat plate 22. The pre-deformation unit 5 includes a wide-groove wire feeding wheel 51, a deformation roller 52, and a V-groove wire outlet wheel 53 arranged in sequence from front to back. Specifically, on the top plate 221, the wide-groove wire feeding wheel 51, the deformation roller 52, and the V-groove wire outlet wheel 53 are arranged in sequence in a straight line.

[0047] The wide-groove wire feeding wheel 51 has a trapezoidal groove bearing structure. The wide-groove wire feeding wheel 51 is fixedly connected to the top plate 221 by bolts and can rotate. The V-groove wire outlet wheel 53 has a V-shaped groove bearing structure. The V-groove wire outlet wheel 53 is fixedly connected to the top plate 221 by bolts and can rotate. The groove width of the V-groove wire outlet wheel 53 is smaller than that of the wide-groove wire feeding wheel 51, and the wide-groove wire feeding wheel 51 and the V-groove wire outlet wheel 53 are arranged at the same height. The cord first passes through the wide-groove wire feeding wheel 51, then bypasses the deforming roller 52, and finally passes through the V-groove wire outlet wheel 53 and then enters the stranding machine.

[0048] The positions of the wide-groove wire feeding wheel 51 and the V-groove wire outlet wheel 53 are both fixed and protrude upward from the upper plane of the top plate 221. The deforming roller 52 is arranged on the support 2 in an up-and-down adjustable manner. Therefore, the up-and-down position of the deforming roller 52 can be adjusted. In this way, the deforming roller 52, the wide-groove wire feeding wheel 51, and the V-groove wire outlet wheel 53 are arranged in an isosceles triangle in the up-and-down direction.

[0049] When the deforming roller 52 is installed, an adjusting groove 13 is formed on the top plate 221. The adjusting groove 13 is a rectangular groove and is arranged between the wide-groove wire feeding wheel 51 and the V-groove wire outlet wheel 53. A scale line 14 for indicating the depth of the adjusting groove 13 is also provided on the top plate 221. At the same time, a deforming slider 15 is slidably arranged up and down in the adjusting groove 13, and the scale line 14 can also indicate the height position where the deforming slider 15 is located.

[0050] To prevent the deforming slider 15 from moving left and right, the cross-section of the deforming slider 15 is in the shape of a "worker". Therefore, one end of the deforming slider 15 is stuck on the inner wall of the top plate 221, and the other end is stuck on the outer wall of the top plate 221. At the same time, the width of the middle part of the deforming slider 15 is equal to the width of the adjusting groove 13. Therefore, the deforming slider 15 can only move up and down in the adjusting groove 13, as Figure 6 shown.

[0051] To fix the deforming slider 15, locking bolts 16 are arranged on both sides of the other end of the deforming slider 15. After the two locking bolts 16 are tightened, their heads tightly abut against the side wall of the top plate 221, and thus the deforming slider 15 can be fixed. After the locking bolts 16 are loosened, the position of the deforming slider 15 can be adjusted up and down. The deforming roller 52 is rotatably arranged on the deforming slider 15, and the deforming roller 52 has an I-shaped roller structure.

[0052] The principle of the present utility model is as follows: The pre-deformation device is installed on the stranding machine and is arranged between the four pay-off wheels 1. The four pay-off wheels 1 respectively lead out the cord, bypass the pre-deformation device, and then enter the stranding machine. When the cord is wound: After the cord on one of the pay-off wheels 1 is led out, it successively bypasses the upper left middle pay-off wheel 1 and the upper front wire passing wheel 311 and then enters the pre-deformation unit 5, as Figure 7As shown in the figure; after the cord on the second pay-off reel 1 is led out, it successively bypasses the upper right middle thread-passing reel 103 and the lower front thread-passing reel 312, and then is introduced into the pre-deformation unit 5, as Figure 8 shown in the figure; thirdly, after the cord on the pay-off reel 1 is led out, it bypasses the lower left middle pay-off reel 1 and then is introduced into the pre-deformation unit 5, as Figure 9 shown in the figure; fourthly, after the cord on the pay-off reel 1 is led out, it bypasses the lower right middle thread-passing reel 104 and then is introduced into the pre-deformation unit 5, as Figure 10 shown in the figure.

[0053] After the cords on the four pay-off reels 1 enter the pre-deformation unit 5 together, they first bypass the wide-groove wire-feeding wheel 51 above the support 2, then bypass the deformation roller 52 downward, and finally bypass the V-groove wire-outlet wheel 53 upward, as Figure 11 shown in the figure. During the process of the cord passing through the pre-deformation device, the front thread-passing reel group 3 and the middle thread-passing reel unit 4 can guide the cords on the four pay-off reels 1 in different directions into the pre-deformation unit 5. By the pre-deformation unit 5, the cord tension fluctuation can be reduced, and at the same time, the cord can generate a certain amount of bending deformation, fully eliminating the stress inside the cord and improving the product quality of the cord.

[0054] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included within the scope of the patent application of the present invention.

Claims

1. A pre-deformation device, arranged on a stranding machine between four pay-off wheels (1), characterized in that: It comprises a support (2), a front wire-passing wheel group (3), a middle wire-passing wheel unit (4) and a pre-deformation unit (5), wherein the front wire-passing wheel group (3) is arranged in front of the support (2), and the front wire-passing wheel group (3) comprises two front wire-passing wheels (31) arranged to rotate up and down; The middle portion of the support (2) is provided with the middle wire wheel unit (4), the middle wire wheel unit (4) comprising a mounting plate (41) and a middle wire wheel group (42), the mounting plate (41) being movably arranged on the support (2) in a forward and backward manner, the mounting plate (41) and the support (2) being arranged vertically, the middle wire wheel groups (42) being arranged at both left and right ends of the mounting plate (41), the middle wire wheel groups (42) being two groups in number, the middle wire wheel groups (42) comprising two middle wire wheels (10) arranged to rotate up and down, the middle wire wheel group (42) and the front wire wheel group (3) being of the same structure; The pre-deformation unit (5) is arranged behind the support (2), and comprises a wide groove wire feeding wheel (51), a deformation roller (52) and a V-groove wire outlet wheel (53) arranged in sequence in front and back, the deformation roller (52) being arranged on the support (2) in an adjustable manner in the upper and lower directions, and the wide groove wire feeding wheel (51) and the V-groove wire outlet wheel (53) being arranged at the same height.

2. A pre-deformation device according to claim 1, characterized in that: The support (2) is a straight-line frame structure. The support (2) comprises a front support plate (21) and a rear seat plate (22) connected together in a front-rear manner. The rear seat plate (22) comprises a top plate (221) and a bottom plate (222). The top plate (221) has an L-shaped cross section. The top plate (221) is arranged horizontally. The bottom plate (222) is arranged horizontally below the top plate (221). The front support plate (21) is arranged horizontally at one end of the top plate (221).

3. A pre-deformation device according to claim 2, characterized in that: A front wire-passing wheel group (3) is arranged at one end of the front support plate (21) away from the rear seat plate (22), and two front wire-passing wheels (31) in the front wire-passing wheel group (3) are both V-groove bearing structures, and the two front wire-passing wheels (31) are respectively an upper front wire-passing wheel (311) and a lower front wire-passing wheel (312); A front support column (6) is also provided at the end of the front support plate (21); the upper front wire passing wheel (311) and the lower front wire passing wheel (312) are arranged in parallel above and below the front support column (6); the front support column (6) is connected to the upper front wire passing wheel (311) and the lower front wire passing wheel (312) by bolts.

4. A pre-deformation device according to claim 2, characterized in that: The front support plate (21) is provided with an adjustment hole (7), the adjustment hole (7) is a waist-shaped hole, the adjustment hole (7) is arranged along the length direction of the front support plate (21), the mounting plate (41) is movably arranged on the front support plate (21), and the mounting plate (41) and the front support plate (21) are perpendicular to each other; A slot (9) is provided on the lower end surface of the mounting plate (41), the slot (9) is clamped on the front support plate (21) and moves forward and backward along the front support plate (21), and the mounting plate (41) and the front support plate (21) are provided with adjustment bolts (8), and the adjustment bolts (8) vertically pass through the adjustment holes (7).

5. A pre-deformation device according to claim 1, characterized in that: The two middle wire passing wheels (10) in the middle wire passing wheel group (42) are both V-groove bearing structures. The two middle wire passing wheels (10) located at the left end of the mounting plate (41) are respectively an upper left middle wire passing wheel (101) and a lower left middle wire passing wheel (102), and the two middle wire passing wheels (10) located at the right end of the mounting plate (41) are respectively an upper right middle wire passing wheel (103) and a lower right middle wire passing wheel (104).

6. A pre-deformation device according to claim 5, characterized in that: The left and right ends of the mounting plate (41) are respectively provided with a left support (11) and a right support (12); the upper left middle wire wheel (101) and the lower left middle wire wheel (102) are arranged vertically above the left support (11); the left support (11) is connected to the upper left middle wire wheel (101) and the lower left middle wire wheel (102) by bolts; The upper right middle wire wheel (103) and the lower right middle wire wheel (104) are arranged vertically above the right pillar (12), and the right pillar (12) is connected to the upper right middle wire wheel (103) and the lower right middle wire wheel (104) by bolts.

7. A pre-deformation device according to claim 2, characterized in that: The pre-deformation unit (5) is arranged on the rear seat plate (22); a wide groove wire feed wheel (51), a deformation roller (52) and a V-groove wire outlet wheel (53) are arranged in a straight line in front and back of the top plate (221); the wide groove wire feed wheel (51) is a trapezoidal groove bearing structure; the wide groove wire feed wheel (51) is fixed to the top plate (221) by bolt connection; the V-groove wire outlet wheel (53) is a V-groove bearing structure; the groove width of the V-groove wire outlet wheel (53) is smaller than the groove width of the wide groove wire feed wheel (51); and the V-groove wire outlet wheel (53) is fixed to the top plate (221) by bolt connection.

8. A pre-deformation device according to claim 7, characterized in that: The top plate (221) is provided with an adjustment groove (13), the adjustment groove (13) being a rectangular groove, the adjustment groove (13) being arranged between the wide groove wire feeding wheel (51) and the V groove wire outlet wheel (53), and the top plate (221) is also provided with a scale line (14) for indicating the depth of the adjustment groove (13); A deformable slider (15) is slidably disposed in the adjustment groove (13) up and down, the deformable slider (15) having an I-shaped cross section, a locking bolt (16) being disposed on the deformable slider (15), the head of the locking bolt (16) being tightly pressed against the side wall of the top plate (221), the deformable roller (52) being rotatably disposed on the deformable slider (15), and the deformable roller (52), the wide groove wire feeding wheel (51) and the V-groove wire outlet wheel (53) being arranged up and down to form an isosceles triangle.

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