CN220127253U

CN220127253U - Numerical control hexagonal square straightener

Info

Publication number: CN220127253U
Application number: CN202320551291.8U
Authority: CN
Inventors: 陈炳昌
Original assignee: Foshan Fanshun Machinery Co ltd
Current assignee: Foshan Fanshun Machinery Co ltd
Priority date: 2023-03-18
Filing date: 2023-03-18
Publication date: 2023-12-05
Anticipated expiration: 2033-03-18

Abstract

The numerical control hexagonal square straightener comprises a horizontal numerical control straightener unit for straightening a metal bar in the horizontal direction, a vertical numerical control straightener unit for straightening the metal bar in the vertical direction and a base for installing the horizontal numerical control straightener unit and the vertical numerical control straightener unit, wherein the horizontal numerical control straightener unit and the vertical numerical control straightener unit are installed and connected on the base; the numerical control servo motor is used for adjusting the pressure of the pressing wheels, only one stepping value is needed to be input, each numerical control servo motor can push the pressing wheels for a required distance, each pressing wheel is not needed to be adjusted, the difficulty of hand feeding is small, the operation process is simple and convenient, and the alignment precision is improved.

Description

Numerical control hexagonal square straightener

Technical Field

The utility model belongs to the technical field of metal bar processing, and particularly relates to a numerical control hexagonal tetragonal straightener.

Background

In the processing process of the square bar and the hexagon bar, a straightener is required to straighten the straightness of the metal bar to ensure that the metal bar meets the requirements. Straightening machines generally employ a reverse bend straightening method in which a bent metal bar is subjected to reverse bending. In order to eliminate elastic recovery caused by bending internal stress and secondary bending caused by overlarge bending quantity, the bent metal bar is required to be bent back for a plurality of times, and therefore, a straightening sleeve composed of a plurality of groups of fixed traction wheels, movable pinch wheels and other components is arranged for straightening the metal bar to roll. As the number of times of bending the metal bar increases, the amount of bending required for further straightening decreases, so that the amount of pressing the pressing wheel of each set of straightening sleeve needs to be adjusted.

As shown in the chinese patent document of patent No. 202022482979.4, it discloses a bar straightener, which comprises a machine body, a feeding end and a discharging end respectively arranged on two sides of the machine body along the length direction, a driving pinch roller and a driven pinch roller rotatably connected to one side wall of the machine body, the driving pinch roller positioned on the lower side of the driven pinch roller, and an adjusting device arranged on the machine body to make the driven pinch roller approach to or far from the driving pinch roller; the adjusting device comprises a mounting block and a screw rod, a mounting groove is formed in the machine body, the mounting block is arranged in the mounting groove, and the driven pinch roller is rotationally connected to one side of the mounting block, which faces the opening of the mounting groove; the screw rod is screwed with the top wall of the mounting groove, the bottom of the screw rod is rotationally connected with the top wall of the mounting block, and the top end of the screw rod is positioned above the top wall of the machine body. And the top end of the screw rod is fixedly connected with a hand wheel.

The pressing amount of the pinch roller of the straightener is pushed by a hand wheel screw rod to be regulated, when the straightening machine is regulated, the straightening precision of the metal bar is regulated and controlled completely by the experience of an operator, the problem of poor regulation and control stability exists, and the manual adjustment operation is required to be carried out on a plurality of pinch rollers for straightening the metal bar in different batches, so that the steps are complicated.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the numerical control hexagonal square straightener which is small in upper hand difficulty, simple and convenient to operate and high in straightening precision.

The technical scheme adopted for solving the technical problems is as follows:

the numerical control hexagonal square straightener comprises a horizontal numerical control straightener unit for straightening a metal bar in the horizontal direction, a vertical numerical control straightener unit for straightening the metal bar in the vertical direction and a base for installing the horizontal numerical control straightener unit and the vertical numerical control straightener unit, wherein the horizontal numerical control straightener unit and the vertical numerical control straightener unit are installed and connected on the base; the horizontal numerical control straightening unit and the vertical numerical control straightening unit are respectively provided with a first feeding channel and a second feeding channel which can be used for the metal bar to enter straightening processing, and the first feeding channel is communicated with the second feeding channel. The horizontal numerical control straightening unit and the vertical numerical control straightening unit are respectively provided with a pressing wheel front-back moving mechanism which is horizontally arranged and a pressing wheel up-down moving mechanism which is vertically arranged, and the pressing wheel front-back moving mechanism and the pressing wheel up-down moving mechanism are respectively provided with a numerical control servo motor for automatic adjustment in the horizontal direction and the vertical direction.

In the utility model, the horizontal numerical control straightening unit further comprises a first pressing wheel set, a first traction wheel set, a horizontal machine box and a first traction driving mechanism; the first pressing wheel set and the first traction wheel set are arranged at intervals front and back to form a first feeding channel; the first pressing wheel set is connected with the pressing wheel forward-backward moving mechanism, and the pressing wheel forward-backward moving mechanism is connected with the horizontal chassis; the first traction wheel set is in transmission connection with the first traction driving mechanism; the first traction driving mechanism comprises a first traction motor and a first traction reduction gearbox, the first traction motor is in transmission connection with the first traction reduction gearbox, and the first traction reduction gearbox is in transmission connection with the first traction wheel set.

In the utility model, the first pinch roller group comprises a plurality of first pinch rollers, and the first pinch rollers are arranged in rows at intervals; the first traction wheel set comprises a plurality of first traction wheels, and the first traction wheels are arranged in rows at intervals; the first pinch rollers and the first traction wheels are alternately arranged in a staggered mode one by one, the first pinch rollers and the two adjacent first traction wheels form a back reverse bending working area, and the first traction wheels and the two adjacent first pinch rollers form a front reverse bending working area.

In the utility model, the pinch roller forward-backward movement mechanism comprises a pinch roller forward-backward adjustment mechanism and a forward-backward adjustment driving mechanism, and the pinch roller forward-backward adjustment mechanism is in transmission connection with the forward-backward adjustment driving mechanism.

In the utility model, the front-rear adjustment driving mechanism comprises a plurality of first numerical control servo motors and a plurality of front-rear adjustment reduction boxes, and the first numerical control servo motors are in transmission connection with the front-rear adjustment reduction boxes; the pinch roller front-rear adjusting mechanism comprises a first sliding block, a first guide groove and a first pushing screw rod; the first guide groove is horizontally arranged; the first sliding block is movably arranged in the first guide groove; the upper part of the first sliding block is connected with the first pinch roller, the lower part of the first sliding block is provided with a first wire groove, one end of the first pushing screw rod is meshed with the first wire groove, and the other end of the first pushing screw rod is in transmission connection with the front-back adjusting reduction gearbox.

In the utility model, the vertical numerical control straightening unit further comprises a second pressing wheel set, a second traction wheel set, a vertical machine box and a second traction driving mechanism; the second pressing wheel set and the second traction wheel set are arranged at an upper-lower interval to form a second feeding channel; the second pressing wheel set is connected with a pressing wheel up-and-down moving mechanism, and the pressing wheel up-and-down moving mechanism is connected with the vertical chassis; the second traction wheel set is in transmission connection with a second traction driving mechanism; the second traction driving mechanism comprises a second traction motor and a second traction reduction gearbox, the second traction motor is in transmission connection with the second traction reduction gearbox, and the second traction reduction gearbox is in transmission connection with the second traction wheel set.

In the utility model, the second pressing wheel group comprises a plurality of second pressing wheels, and the second pressing wheels are arranged in rows at intervals; the second traction wheel set comprises a plurality of second traction wheels, and the second traction wheels are arranged in rows at intervals; the second pinch rollers and the second traction wheels are alternately arranged in a staggered mode one by one, the second pinch rollers and the two adjacent second traction wheels form a lower reverse bending working area, and the second traction wheels and the two adjacent second pinch rollers form an upper reverse bending working area.

In the utility model, the pinch roller up-down moving mechanism comprises a pinch roller up-down adjusting mechanism and an up-down adjusting driving mechanism, and the pinch roller up-down adjusting mechanism is in transmission connection with the up-down adjusting driving mechanism.

In the utility model, the first traction wheel, the first pinch roller, the second traction wheel and the second pinch roller are all provided with a plurality of clamping grooves with different specifications on the circumferential outer side surfaces, and the cross section of each clamping groove is of a V-shaped groove structure.

The beneficial effects of the utility model are as follows: according to the utility model, the pressure of the pinch roller is regulated by adopting the numerical control servo motor, only one stepping value is required to be input, each numerical control servo motor can push the pinch roller for a required distance, each pinch roller is not required to be regulated, the difficulty of hand lifting is small, the operation process is simple and convenient, and the alignment precision is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a front view of the present embodiment;

FIG. 2 is a top view of the present embodiment;

FIG. 3 is a side view of the present embodiment;

FIG. 4 is a schematic view of a partial cross-sectional structure of the puck forward and backward movement mechanism;

fig. 5 is a schematic view of a metal bar straightening process in the horizontal direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1-5, the embodiment discloses a numerical control hexagonal tetragonal straightener, which comprises a horizontal numerical control straightener 1 for straightening a metal bar in a horizontal direction, a vertical numerical control straightener 2 for straightening the metal bar in a vertical direction, and a base 3 for installing the horizontal numerical control straightener 1 and the vertical numerical control straightener 2, wherein the horizontal numerical control straightener 1 and the vertical numerical control straightener 2 are installed and connected on the base 3; the horizontal numerical control straightening unit 1 and the vertical numerical control straightening unit 2 are respectively provided with a first feeding channel 11 and a second feeding channel 21 which can be used for metal bars to enter straightening processing, and the first feeding channel 11 is communicated with the second feeding channel 21. The horizontal numerical control straightening unit 1 and the vertical numerical control straightening unit 2 are respectively provided with a pressing wheel forward-backward movement mechanism 12 which is horizontally arranged and a pressing wheel up-down movement mechanism 22 which is vertically arranged, and the pressing wheel forward-backward movement mechanism 12 and the pressing wheel up-down movement mechanism 22 are respectively provided with a numerical control servo motor for automatic adjustment in the horizontal direction and the vertical direction. The metal bar passes through the first feeding channel 11 of the horizontal numerical control straightening unit 1 or the second feeding channel 21 of the vertical numerical control straightening unit 2, the reverse bending amount is adjusted by the numerical control servo motor, and after the straightening in the horizontal or vertical direction is completed, the metal bar continuously enters the other numerical control straightening unit forwards to complete the straightening in the other direction.

As a preferred embodiment, the horizontal numerical control straightening unit 1 further comprises a first pressing wheel set 13, a first traction wheel set 14, a horizontal chassis 15 and a first traction driving mechanism 16; the first pressing wheel set 13 and the first traction wheel set 14 are arranged at intervals in the front-back direction to form a first feeding channel 11; the first pressing wheel set 13 is connected with the pressing wheel forward and backward moving mechanism 12, and the pressing wheel forward and backward moving mechanism 12 is connected with the horizontal machine box 15; the first traction wheel set 14 is in transmission connection with a first traction drive mechanism 16; the first traction driving mechanism 16 comprises a first traction motor 161 and a first traction reduction box 162, the first traction motor 161 is in transmission connection with the first traction reduction box 162, and the first traction reduction box 162 is in transmission connection with the first traction wheel set 14. The first traction driving mechanism 16 provides power for the first traction wheel set 14 and enables the first traction wheel set 14 to rotate at the same speed, the metal bar is drawn to advance along the first feeding channel 11, the metal bar is subjected to reverse bending alignment from the first pressing wheel set 13 and the first traction wheel set 14 for many times in the horizontal direction during advancing, the bending state of the metal bar in the feeding channel is like an attenuated sine wave, the bending amount is close to zero, and finally the metal bar exits the first feeding channel 11 in a relatively flat state in the horizontal direction.

As a preferred embodiment, the first pinch roller set 13 includes a plurality of first pinch rollers 131, and the first pinch rollers 131 are arranged in a row at intervals; the first traction wheel set 14 comprises a plurality of first traction wheels 141, and the first traction wheels 141 are arranged in rows at intervals; the first pinch rollers 131 and the first traction rollers 141 are alternately arranged in a staggered manner one by one, the first pinch rollers 131 and the two adjacent first traction rollers 141 form a back reverse bending working area 17, and the first traction rollers 141 and the two adjacent first pinch rollers 131 form a front reverse bending working area 18. When the metal bar enters the first feeding channel 11 and passes through the backward bending work area 17, the first pinch roller 131 and two adjacent first traction wheels 141 are respectively used as a pressure head and a pivot to bend the metal bar backward once; when the metal bar passes through the front reverse bending working area 18, the first traction wheel 141 and the two adjacent first pinch rollers 131 are respectively used as a pressure head and a pivot to bend the metal bar forwards for one time, and after the internal stress of the metal bar is bent in the first feeding channel 11 in a plurality of alternating ways, the bending internal stress value is reduced, and finally, the bending internal stress value is close to zero.

As a preferred embodiment, the pinch roller back-and-forth movement mechanism 12 comprises a pinch roller back-and-forth adjustment mechanism 121 and a back-and-forth adjustment driving mechanism 122, wherein the pinch roller back-and-forth adjustment mechanism 121 is in transmission connection with the back-and-forth adjustment driving mechanism 122; the front-back adjustment driving mechanism 122 drives the pinch roller front-back adjustment mechanism 121 to realize the front-back movement of the first pinch roller 131; the front-rear adjustment driving mechanism 122 includes a plurality of first nc servo motors 1221 and a plurality of front-rear adjustment reduction boxes 1222, and the first nc servo motors 1221 are in transmission connection with the front-rear adjustment reduction boxes 1222; the pinch roller front-rear adjusting mechanism 121 comprises a first slider 1211, a first guide slot 1212 and a first pushing screw 1213; the first guide slot 1212 is horizontally disposed; the first slider 1211 is movably mounted in the first guide slot 1212; the upper part of the first slider 1211 is connected with the first pinch roller 131, the lower part is provided with a first wire groove 1214, one end of the first pushing screw 1213 is meshed with the first wire groove 1214, and the other end is in transmission connection with the front-back adjusting reduction gearbox 1222. As the number of times of bending the metal bar increases, the amount of bending required for further straightening decreases, and therefore the press-in amount of each first press wheel 131 needs to be adjusted by the press-in forward/backward movement mechanism 12. The first numerical control servo motor 1221 receives the control electric signal, and drives the first pushing screw 1213 to rotate after being decelerated by the front-back adjustment reduction gearbox 1222, and the first slider 1211 provided with the first wire slot 1214 slides forward in the first guide slot 1212 for a required distance, so as to complete adjustment of the pressing amount of the first pressing wheel 131. The numerical control servo motor can accurately control each pinch roller to move to the required pressing-in amount, high-precision straightening is achieved, and the process that the traditional straightener manually adjusts the pinch rollers one by one is avoided, so that the steps are complicated, and the straightening precision of the pinch rollers is low is avoided.

As a preferred embodiment, the vertical numerically controlled straightening unit 2 further comprises a second pressing wheel set 23, a second traction wheel set 24, a vertical chassis 25 and a second traction driving mechanism 26; the second pressing wheel set 23 and the second traction wheel set 24 are arranged at an upper-lower interval to form a second feeding channel 21; the second pressing wheel set 23 is connected with the pressing wheel up-and-down moving mechanism 22, and the pressing wheel up-and-down moving mechanism 22 is connected with the vertical chassis 25; the second traction wheel set 24 is in transmission connection with a second traction drive mechanism 26; the second traction driving mechanism 26 comprises a second traction motor 261 and a second traction reduction gearbox 262, the second traction motor 261 is in transmission connection with the second traction reduction gearbox 262, and the second traction reduction gearbox 262 is in transmission connection with the second traction wheel set 24. The second traction driving mechanism 26 provides power for the second traction wheel set 24 and makes the second traction wheel set 24 rotate at the same speed, the metal bar is drawn to advance along the second feeding channel 21, the metal bar is subjected to multiple times of reverse bending alignment from the second pressing wheel set 23 and the second traction wheel set 24 in the vertical direction during advancing, the bending state of the metal bar in the feeding channel is like an attenuated sine wave, the bending amount tends to zero, and finally the metal bar exits the second feeding channel 21 in a relatively straight state in the vertical direction.

As a preferred embodiment, the second pressing wheel set 23 includes a plurality of second pressing wheels 231, and the second pressing wheels 231 are arranged in rows at intervals; the second traction wheel set 24 comprises a plurality of second traction wheels 241, and the second traction wheels 241 are arranged in rows at intervals; the second pinch rollers 231 and the second traction rollers 241 are alternately arranged in a staggered manner one by one, the second pinch rollers 231 and two adjacent second traction rollers 241 form a lower reverse bending working area 27, and the second traction rollers 241 and two adjacent second pinch rollers 231 form an upper reverse bending working area 28. When the metal bar enters the second feeding channel 21 and passes through the lower reverse bending work area 27, the second pressing wheel 231 and two adjacent second traction wheels 241 are respectively used as a pressing head and a supporting point to bend the metal bar downwards once; when the metal bar passes through the upper reverse bending working area 28, the second traction wheel 241 and the two adjacent second pinch wheels 231 respectively serve as a pressure head and a pivot point to bend the metal bar upwards once, and the bending internal stress value of the metal bar is reduced and finally approaches zero under the condition that the internal stress of the metal bar is bent in the second feeding channel 21 in a plurality of alternating modes.

As a preferred embodiment, the structure of the wheel up-and-down movement mechanism 22 is substantially the same as that of the wheel up-and-down movement mechanism 12, and the only difference is that: the pinch roller up-down moving mechanism 22 is vertically arranged, and the pinch roller forward-backward moving mechanism 12 is horizontally arranged. Specifically, the pinch roller up-down moving mechanism 22 includes a pinch roller up-down adjusting mechanism 221 and an up-down adjusting driving mechanism 222, where the pinch roller up-down adjusting mechanism 221 is in transmission connection with the up-down adjusting driving mechanism 222; the up-down adjusting driving mechanism 222 drives the pinch roller up-down adjusting mechanism 221 to realize up-down movement of the second pinch roller 231; the up-down adjustment driving mechanism 222 includes a plurality of second digital servo motors 2221 and a plurality of up-down adjustment reduction boxes 2222, where the second digital servo motors are in transmission connection with the up-down adjustment reduction boxes; the pinch roller up-down adjusting mechanism 221 comprises a second sliding block, a second guide groove and a second pushing screw rod; the second guide groove is vertically arranged; the second sliding block is movably arranged in the second guide groove; the upper part of the second sliding block is connected with a second pinch roller 231, the lower part of the second sliding block is provided with a second wire groove, one end of the second pushing screw rod is meshed with the second wire groove, and the other end of the second pushing screw rod is in transmission connection with the up-down adjusting reduction gearbox. As the number of times the metal bar is subjected to the bending back increases, the amount of bending back required for further straightening decreases accordingly, and thus the pinch roller up-and-down movement mechanism 22 is required to adjust the amount of pressing in each second pinch roller 231. The second numerical control servo motor 2221 receives the control electric signal, and drives the second pushing screw rod to rotate after being decelerated by the up-down adjusting reduction gearbox 2222, and the second sliding block provided with the second wire groove slides downwards in the second guide groove for a required distance, so that adjustment of the pressing-in amount of the second pressing wheel 231 is completed.

As a preferred embodiment, the circumferential outer sides of the first traction wheel 141, the first pressing wheel 131, the second traction wheel 241 and the second pressing wheel 231 are provided with a plurality of clamping grooves with different specifications, and the cross section of each clamping groove is in a V-shaped groove structure, so that the clamping grooves are suitable for metal bars with different specifications.

The foregoing is only a preferred embodiment of the present utility model, and all technical solutions for achieving the object of the present utility model by substantially the same means are included in the scope of the present utility model.

Claims

1. A numerical control hexagonal square straightener is characterized in that: the metal bar straightening device comprises a horizontal numerical control straightening unit (1) for straightening a metal bar in the horizontal direction, a vertical numerical control straightening unit (2) for straightening the metal bar in the vertical direction and a base (3) for installing the horizontal numerical control straightening unit (1) and the vertical numerical control straightening unit (2), wherein the horizontal numerical control straightening unit (1) and the vertical numerical control straightening unit (2) are installed and connected on the base (3); the horizontal numerical control straightening unit (1) and the vertical numerical control straightening unit (2) are respectively provided with a first feeding channel (11) and a second feeding channel (21) which can be used for enabling metal bars to enter straightening processing, and the first feeding channel (11) is communicated with the second feeding channel (21); the horizontal numerical control straightening unit (1) and the vertical numerical control straightening unit (2) are respectively provided with a pressing wheel front-back moving mechanism (12) which is horizontally arranged and a pressing wheel up-down moving mechanism (22) which is vertically arranged, and the pressing wheel front-back moving mechanism (12) and the pressing wheel up-down moving mechanism (22) are respectively provided with a numerical control servo motor for automatic adjustment of the horizontal direction and the vertical direction.

2. The numerical control hexagonal square straightener of claim 1, characterized in that: the horizontal numerical control straightening unit (1) further comprises a first pressing wheel set (13), a first traction wheel set (14), a horizontal machine box (15) and a first traction driving mechanism (16); the first pressing wheel set (13) and the first traction wheel set (14) are arranged at intervals in the front-back direction to form a first feeding channel (11); the first pressing wheel set (13) is connected with the pressing wheel forward and backward moving mechanism (12), and the pressing wheel forward and backward moving mechanism (12) is connected with the horizontal machine box (15); the first traction wheel set (14) is in transmission connection with a first traction driving mechanism (16); the first traction driving mechanism (16) comprises a first traction motor (161) and a first traction reduction gearbox (162), the first traction motor (161) is in transmission connection with the first traction reduction gearbox (162), and the first traction reduction gearbox (162) is in transmission connection with the first traction wheel set (14).

3. A numerically controlled hexagonal tetragonal straightener in accordance with claim 2, further comprising: the first pressing wheel group (13) comprises a plurality of first pressing wheels (131), and the first pressing wheels (131) are arranged in rows at intervals; the first traction wheel set (14) comprises a plurality of first traction wheels (141), and the first traction wheels (141) are arranged in rows at intervals; the first pinch rollers (131) and the first traction rollers (141) are alternately arranged in a staggered mode one by one, the first pinch rollers (131) and the two adjacent first traction rollers (141) form a back reverse bending working area (17), and the first traction rollers (141) and the two adjacent first pinch rollers (131) form a front reverse bending working area (18).

4. A numerically controlled hexagonal tetragonal straightener in accordance with claim 3, further comprising: the pinch roller back-and-forth movement mechanism (12) comprises a pinch roller back-and-forth adjustment mechanism (121) and a back-and-forth adjustment driving mechanism (122), and the pinch roller back-and-forth adjustment mechanism (121) is in transmission connection with the back-and-forth adjustment driving mechanism (122).

5. The numerical control hexagonal square straightener of claim 4, further characterized by: the front-rear adjustment driving mechanism (122) comprises a plurality of first numerical control servo motors (1221) and a plurality of front-rear adjustment reduction boxes (1222), and the first numerical control servo motors (1221) are in transmission connection with the front-rear adjustment reduction boxes (1222); the pinch roller front-rear adjusting mechanism (121) comprises a first sliding block (1211), a first guide groove (1212) and a first pushing screw rod (1213); the first guide groove (1212) is horizontally arranged; the first sliding block (1211) is movably arranged in the first guide groove (1212); the upper part of the first sliding block (1211) is connected with the first pinch roller (131), the lower part is provided with a first wire groove (1214), one end of the first pushing screw rod (1213) is meshed with the first wire groove (1214), and the other end is in transmission connection with the front-back adjusting reduction gearbox (1222).

6. A numerically controlled hexagonal tetragonal straightener in accordance with claim 3, further comprising: the vertical numerical control straightening unit (2) further comprises a second pressing wheel set (23), a second traction wheel set (24), a vertical machine box (25) and a second traction driving mechanism (26); the second pressing wheel set (23) and the second traction wheel set (24) are arranged at an upper-lower interval to form a second feeding channel (21); the second pressing wheel set (23) is connected with a pressing wheel up-and-down moving mechanism (22), and the pressing wheel up-and-down moving mechanism (22) is connected with a vertical chassis (25); the second traction wheel set (24) is in transmission connection with a second traction driving mechanism (26); the second traction driving mechanism (26) comprises a second traction motor (261) and a second traction reduction gearbox (262), the second traction motor (261) is in transmission connection with the second traction reduction gearbox (262), and the second traction reduction gearbox (262) is in transmission connection with the second traction wheel set (24).

7. The numerical control hexagonal square straightener of claim 6, further characterized by: the second pressing wheel group (23) comprises a plurality of second pressing wheels (231), and the second pressing wheels (231) are arranged in rows at intervals; the second traction wheel set (24) comprises a plurality of second traction wheels (241), and the second traction wheels (241) are arranged in rows at intervals; the second pinch rollers (231) and the second traction wheels (241) are alternately arranged in a staggered mode one by one, the second pinch rollers (231) and two adjacent second traction wheels (241) form a lower reverse bending work area (27), and the second traction wheels (241) and two adjacent second pinch rollers (231) form an upper reverse bending work area (28).

8. The numerical control hexagonal square straightener of claim 1, characterized in that: the pinch roller up-and-down moving mechanism (22) comprises a pinch roller up-and-down adjusting mechanism (221) and an up-and-down adjusting driving mechanism (222), and the pinch roller up-and-down adjusting mechanism (221) is in transmission connection with the up-and-down adjusting driving mechanism (222).

9. The numerically controlled hexagonal tetragonal straightener of claim 7, further comprising: the clamping grooves with different specifications are formed in the circumferential outer side surfaces of the first traction wheel (141), the first pressing wheel (131), the second traction wheel (241) and the second pressing wheel (231), and the cross sections of the clamping grooves are of V-shaped groove structures.