CN211387662U

CN211387662U - Numerical control straightening shearing machine

Info

Publication number: CN211387662U
Application number: CN201922051641.0U
Authority: CN
Inventors: 李勇
Original assignee: Dongguan Tianhe Intelligent Machinery Co ltd
Current assignee: Dongguan Tianhe Intelligent Machinery Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-09-01
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a numerical control alignment shearing machine, it includes frame, pay-off meter length device, support, drive arrangement, shearing mechanism, transmission shaft, transmission eccentric wheel, shearing eccentric wheel, swing arm, linear slide rail, slide and carries the aligning device. The conveying straightening device straightens the material and then conveys the material, the driving device synchronously drives the transmission shaft to drive the transmission eccentric wheel and the shearing eccentric wheel to rotate simultaneously, the swing arm is matched with the transmission eccentric wheel to realize that the linkage sliding seat moves backwards on the linear sliding rail, the backward moving speed of the shearing device along with the sliding seat is consistent with the feeding speed of the conveying straightening device, and the relative rest of a cutting knife of the shearing device and the material is realized; subsequently, the shearing eccentric wheel pushes a cutter of the shearing device to perform a material shearing action, the shearing action is performed while feeding is performed, the whole straightening feeding and shearing action are smooth, no pause exists, the shearing working efficiency is greatly improved, the shearing precision is effectively guaranteed, and the wide popularization and application are facilitated.

Description

Numerical control straightening shearing machine

Technical Field

The utility model relates to a cutter technical field, concretely relates to numerical control alignment cutter.

Background

The traditional steel shearing method generally adopts a manual punching method. The manual punching has the following disadvantages: 1. the labor intensity of workers is high; 2. the production cost is high, and the efficiency is poor; 3. the precision is low, and the product rejection rate is high; 4. the noise is large and there is a certain danger. With the continuous improvement of the industrial automation degree, the traditional manual shearing method can not meet the development requirements of the society, and with the continuous improvement of the labor cost and the continuous improvement of the social competitiveness, the traditional manual shearing method needs to have a strong industrial automation to do a backdrop in the fierce competition, and can not be eliminated.

The utility model discloses a full-automatic steel straightening and shearing machine, which is named as the full-automatic steel straightening and shearing machine with the publication number of CN202070908U, and comprises a straightening and feeding part, an oil cylinder part, a material cutting part and a feeding frame; the output end of the feeding frame is provided with a straightening feeding part, the output end of the straightening feeding part is provided with a material cutting part, and the upper part of the material cutting part is connected with an oil cylinder part. Although the straightening and shearing purposes can be achieved, when the shear is conducted, feeding needs to be stopped, then the shear is conducted, and the working efficiency is low. If the shearing is carried out while feeding, the cutter is subjected to a horizontal acting force, the cutter is easy to damage, and the steel is pressed against the cutter, so that the steel deforms, and the shearing precision is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide a structural design is ingenious, reasonable, and work efficiency is high, cuts effectual numerical control alignment cutter.

In order to achieve the above purpose, the utility model provides a technical scheme is: a numerical control straightening and shearing machine further comprises a feeding length counting device, a support, a driving device, a shearing device, a transmission shaft, a transmission eccentric wheel, a shearing eccentric wheel, a swing arm, a linear slide rail, a slide seat and a conveying straightening device, wherein the conveying straightening device, the feeding length counting device and the support are sequentially arranged on a rack; the driving device drives the transmission shaft to rotate.

As an optimal scheme of the utility model, pay-off meter length device includes meter length frame, encoder, drive wheel, fabric wheel, income line guide holder and the guide holder of being qualified for the next round of competitions, the drive wheel sets up the lower part at the meter length frame, the encoder sets up on the meter length frame, and with the drive wheel is connected, the fabric wheel passes through adjustment mechanism and sets up on the meter length frame, forms the punishment in advance passageway between this fabric wheel and the drive wheel, go into the line guide holder and correspond the import department in pay-off passageway and the corresponding setting in middle part both sides position of exit in the meter length frame of the guide holder of being qualified for the next round of competitions.

As a preferred scheme of the utility model, drive arrangement includes driving motor, action wheel, flywheel and belt, the flywheel sets up the tip at the drive wheel, driving motor sets up in the frame, the action wheel sets up in driving motor's drive shaft, and passes through the belt with the flywheel is connected.

As a preferred scheme of the utility model, be equipped with bearing between transmission eccentric wheel and the wheel rim.

As an optimized proposal of the utility model, the convex part of the shearing eccentric wheel is provided with a roller.

As an optimized scheme of the utility model, shearing mechanism includes base, wire alignment mould, cutter, cuts seat and the elastic component that resets, wire alignment mould sets up on the base, and the exit position that corresponds wire alignment mould is in be equipped with perpendicularly on the base with the sword groove of cutter looks adaptation, the cutter inserts the sword groove, and the lower extreme of cutter extends to the exit position of wire alignment mould, the elastic component cover that resets is established on the cutter, and the lower extreme roof pressure forces the cutter to go upward to reset on the base, the seat includes perpendicular guide part and the horizontal splenium of horizontal connection in this perpendicular guide part upper end, be equipped with on the base with the guide way of perpendicular guide part looks adaptation, horizontal splenium is pressed the up end of cutter.

As an optimized proposal of the utility model, the wire straightening module is a round bar body, a through hole is axially arranged on the round bar body, and the inlet end of the through hole is trumpet-shaped.

As an optimized proposal of the utility model, the middle part of the cutter is provided with a vertical through groove, and the base is provided with a guide pillar which runs through the vertical through groove.

As a preferred scheme of the utility model, horizontal splenium establishes the screw towards the cutter on the surface, twists adjusting bolt on this screw.

As an optimized proposal of the utility model, the adjusting bolt is screwed with a locking nut.

As a preferred scheme of the utility model, the conveying straightening device comprises a front conveying assembly, a rear conveying assembly, a conveying motor, a straightening assembly and a straightening motor, wherein the front conveying assembly, the straightening assembly and the rear conveying assembly are sequentially arranged on the rack, the conveying motor is arranged at the bottom of the rack, and the front conveying assembly and the rear conveying assembly are driven by a chain transmission assembly to synchronously rotate for conveying materials; the straightening motor is arranged at the bottom of the rack and is driven by the belt transmission assembly to automatically straighten the materials.

As a preferred scheme of the utility model, preceding conveying assembly includes pay-off frame, drive wheel, follows the driving wheel, pushes down the seat, goes up and presses seat, reset spring, pressure spring and pay-off handle, the drive wheel sets up the lower part at the pay-off frame through pushing down the seat, it corresponds the top position activity that pushes down the seat and sets up on the upper portion of pay-off frame to go up to press the seat, reset spring sets up and pushes down between the seat and the last seat of pressing, the top of pay-off frame be equipped with the screw hole of pay-off handle looks adaptation, the pay-off handle twists the screw hole and pass through pressure spring pushes up on last pressing the seat, set up on last pressing the seat from the driving wheel, and should form the pay-off passageway from the driving wheel between driving wheel and the drive wheel, should follow the driving wheel with the drive wheel is connected.

As a preferred scheme of the utility model, the alignment subassembly includes bearing frame, rotary drum and alignment piece, and two bearing frame symmetries set up, the leading-in axle setting of alignment is passed through on one of them bearing frame to the one end of rotary drum, and the other end is led out the axle through the alignment and is set up on another bearing frame, and a plurality of alignment pieces are followed the central axis of rotary drum is staggered arrangement in proper order and is set up in the rotary drum, should straighten the piece and be equipped with the alignment groove in the one side of the central axis of rotary drum.

The utility model has the advantages that: the utility model has the advantages of ingenious and reasonable structural design, carry the straightening back to the material by carrying the aligning device, carry by the synchronous drive transmission shaft of drive arrangement drive transmission eccentric wheel and shearing eccentric wheel and rotate simultaneously, cooperate with the transmission eccentric wheel by the swing arm and realize linking the slide and do the backward motion on the linear slide rail, the speed that the shearing mechanism moved backward along with the slide is unanimous with the material feeding speed of carrying the aligning device, realize that the cutter of shearing mechanism is static relatively with the material; subsequently, the shearing eccentric wheel pushes the cutter of the shearing device to perform a material shearing action, the shearing action is performed while feeding, the whole straightening feeding and the shearing action are smooth, no pause exists, the shearing working efficiency is greatly improved, the problems that the traditional cutter is easy to damage due to stress and the shearing quality is influenced due to material deformation are effectively solved, the shearing precision is ensured, and the wide popularization and application are facilitated.

The present invention will be further explained with reference to the drawings and the embodiments.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic structural view of the middle conveying straightening device of the present invention.

Fig. 3 is a schematic structural view of the middle-front conveying assembly of the present invention.

Fig. 4 is a schematic structural diagram of the middle straightening assembly of the present invention.

Fig. 5 is a schematic structural diagram of the middle straightening block of the present invention.

Fig. 6 is a schematic view of a partial structure of the present invention.

Fig. 7 is a schematic structural view of the middle feeding length measuring device of the present invention.

Fig. 8 is an internal structure diagram 1 of the present invention.

Fig. 9 is an internal structure diagram 2 of the present invention.

Fig. 10 is a partial sectional structural schematic view of the present invention.

Fig. 11 is a schematic structural view of the floating support device of the present invention.

Detailed Description

Embodiment, referring to fig. 1 to 11, the numerically controlled straightening and shearing machine provided in this embodiment includes a frame 1, a feeding length measuring device 2, a support 3, a driving device 4, a shearing device 5, a transmission shaft 6, a transmission eccentric 7, a shearing eccentric 8, a swing arm 9, a linear slide rail 10, a sliding base 11, and a conveying straightening device 12.

Preferably, the transmission eccentric wheel 7 is provided with a plurality of through holes, so that on the basis of ensuring the structural strength, the material consumption and the weight are reduced, the eccentric shaking in high-speed operation is reduced, and the operation stability is good.

The conveying straightening device 12, the feeding length counting device 2 and the support 3 are sequentially arranged on the rack 1, the linear slide rail 10 is arranged on the rack 1 along a feeding track of the conveying straightening device 12, the slide seat 11 is movably arranged on the linear slide rail 10, the transmission shaft 6 is arranged on the support 3, the transmission eccentric wheel 7 and the shearing eccentric wheel 8 are arranged on the transmission shaft 6, the shearing device 5 is arranged on the slide seat 11 corresponding to the lower position of the shearing eccentric wheel 8 and can push the shearing device 5 to do a wire shearing action when the shearing eccentric wheel 8 rotates, one end of the swing arm 9 is hinged on the slide seat 11, and the other end of the swing arm is provided with a rim 91 which can be sleeved on the transmission eccentric wheel 7; preferably, a needle bearing 92 is provided between the driving eccentric 7 and the rim 91, so that the driving eccentric 7 and the rim 91 can be smoothly matched. The driving device 4 drives the transmission shaft 6 to rotate.

Referring to fig. 2, the conveying straightening device 12 includes a front conveying assembly 121, a rear conveying assembly 122, a conveying motor 123, a straightening assembly 124 and a straightening motor 125, the front conveying assembly 121, the straightening assembly 124 and the rear conveying assembly 122 are sequentially arranged on the rack 1, the conveying motor 123 is arranged at the bottom of the rack 1, and the front conveying assembly 121 and the rear conveying assembly 122 are driven by a chain transmission assembly 126 to synchronously rotate and convey materials; the straightening motor 125 is disposed at the bottom of the machine frame 1, and drives the straightening assembly 124 to straighten the material automatically through a belt transmission assembly 127.

Referring to fig. 3, the front feed assembly 121 includes a feed carriage 1211, a drive wheel 1212, a driven wheel 1213, a lower pressure seat 1214, an upper pressure seat 1215, a return spring 1216, a pressure spring 1217, and a feed handle 1218, the driving wheel 1212 is disposed at a lower portion of the feeding frame 1211 through the pressing base 1214, the upper press seat 1215 is movably arranged at the upper part of the feeding frame 1211 corresponding to the upper position of the lower press seat 1214, the return spring 1216 is disposed between the lower anchor 1214 and the upper anchor 1215, the top of the feeding frame 1211 is provided with a threaded hole matched with the feeding handle 1218, the feed handle 1218 is threaded into the threaded bore and is urged against the upper seat 1215 by the pressure spring 1217, the driven wheel 1213 is arranged on the upper press seat 1215, and a feeding channel is formed between the driven wheel 1213 and the driving wheel 1212, the driven wheel 1213 is connected to the driving wheel 1212 via a synchronizing gear 1219 to rotate synchronously. The rear conveying assembly 122 and the front conveying assembly 121 are identical in structure.

Referring to fig. 4, the straightening assembly 124 includes bearing seats 1241, a rotating cylinder 1242 and a straightening block 1243, the two bearing seats 1241 are symmetrically disposed, one end of the rotating cylinder 1242 is disposed on one of the bearing seats 1241 through a straightening lead-in shaft 1244, the other end is disposed on the other bearing seat 1241 through a straightening lead-out shaft 1245, and a pulley groove 1246 is disposed on the rotating cylinder 1242. A plurality of straightening blocks 1243 are arranged in the rotary drum 1242 in a staggered manner in sequence along the central axis of the rotary drum 1242, and a surface of the straightening blocks 1243 facing the central axis of the rotary drum 1242 is provided with straightening grooves 12431. The outer peripheral surface of the steel bar 13 is pressed through the straightening grooves 12431, and the plurality of straightening blocks 1243 are driven to simultaneously press the outer peripheral surface of the steel bar 13 in all directions through the rotation of the rotary drum 1242, so that the straightening purpose is realized.

Specifically, referring to fig. 7, the feeding length measuring device 2 includes a length measuring frame 21, an encoder 22, a driving wheel 23, a wire pressing wheel 24, a wire inlet guide seat 25 and a wire outlet guide seat 26, the driving wheel 23 is disposed at the lower portion of the length measuring frame 21, the encoder 22 is disposed on the length measuring frame 21 and connected to the driving wheel 23, and specifically, a rotating shaft of the encoder 22 is connected to a wheel shaft of the driving wheel 23 through a coupling. The wire pressing wheel 24 is arranged on the length counting frame 21 through an adjusting mechanism 27, a material passing passage is formed between the wire pressing wheel 24 and the driving wheel 23, and the adjusting mechanism 27 can be a spring, a screw rod and the like and is used for adjusting the force of the wire pressing wheel 24 pressing to the driving wheel 23. The wire inlet guide seat 25 and the wire outlet guide seat 26 are correspondingly arranged at the two sides of the middle part of the length measuring frame 21 corresponding to the inlet and the outlet of the feeding passage.

The driving device 4 comprises a driving motor 41, a driving wheel 42, a flywheel 43 and a belt 44, wherein the flywheel 43 is arranged at the end of the driving wheel, the driving motor 41 is arranged on the frame 1, and the driving wheel 42 is arranged on the driving shaft of the driving motor 41 and is connected with the flywheel 43 through the belt 44.

The roller 81 is arranged at the convex part of the shearing eccentric wheel 8, and the sliding friction between the convex part of the shearing eccentric wheel 8 and the cutting seat is converted into rolling friction through the roller 81, so that the friction force is reduced, and the service life is prolonged.

Referring to fig. 8, 9 and 10, the shearing apparatus 5 includes a base 51, a wire straightening die 52, a cutting knife 53, a cutting seat 54 and a return elastic member, the wire straightening die 52 is disposed on the base 51, a knife slot adapted to the cutting knife 53 is vertically disposed on the base 51 corresponding to an outlet position of the wire straightening die 52, the cutting knife 53 is inserted into the knife slot, a lower end of the cutting knife 53 extends to the outlet position of the wire straightening die 52, the return elastic member is sleeved on the cutting knife 53, and a lower end of the return elastic member is pressed against the base 51 to force the cutting knife 53 to move upward and return, and the return elastic member may be a spring or an elastic rubber sleeve. The upper end of the cutter 53 is radially enlarged to form a clamping protrusion, the upper end of the reset elastic component is pressed against the clamping protrusion, and the cutter 53 is reset through the self elasticity of the reset elastic component.

The cutting seat 54 comprises a vertical guide part and a horizontal pressing part horizontally connected to the upper end of the vertical guide part, a guide groove matched with the vertical guide part is formed in the base 51, and the horizontal pressing part presses the upper end face of the cutting knife 53. Preferably, a screw hole is provided on a surface of the horizontal pressing portion facing the cutter 53, and an adjusting bolt 55 is screwed into the screw hole. A lock nut is screwed on the adjusting bolt 55. The height position of the cutting knife 53 can be adjusted by controlling the length of the adjusting bolt 55 screwed into the screw hole, and then the locking nut is rotated to be pressed against the bottom surface of the horizontal pressing part to achieve the purpose of locking.

In this embodiment, the wire straightening module 52 is a round rod body, a through hole is axially formed in the round rod body, and an inlet end of the through hole is in a horn shape, so that a wire rod can conveniently pass through the through hole. Meanwhile, the through hole has a certain length and has a straightening function.

A vertical through groove is formed in the middle of the cutter 53, and a guide post 56 penetrating through the vertical through groove is arranged on the base 51, so that the lifting action of the cutter 53 can be limited and guided, and the shearing precision is improved.

In operation, the present embodiment takes the shearing bar 13 as an example. The reinforcing steel bar 13 is conveyed forwards after being straightened by the conveying straightening device 12. The reinforcing steel bars 13 pass through the feeding and length measuring device 2 and then penetrate out of the through holes of the wire straightening dies 52; at this time, the driving motor 41 drives the driving shaft 6 to rotate, the driving shaft 6 drives the driving eccentric wheel 7 and the shearing eccentric wheel 8 to rotate at the same time, the swing arm 9 is matched with the driving eccentric wheel 7 to realize that the linkage sliding seat 11 moves backwards on the linear slide rail 10, the encoder 22 is used for detecting the conveying speed of the steel bar 13 and feeding the conveying speed back to the controller, the controller calculates the conveying speed in unit time to obtain the conveying length, and simultaneously the rotating speeds of the conveying motor 123 and the driving motor 41 are correspondingly adjusted according to the conveying speed, so that the backward moving speed of the shearing device 5 along with the sliding seat 11 is consistent with the forward conveying speed of the steel bar 13, and the cutter 53 of the shearing device 5 is relatively static with the steel bar 13; when the reinforcing steel bars 13 penetrate out of the through holes of the wire straightening die 52 by a preset length, the rollers on the convex parts of the shearing eccentric wheel 8 just prop against the cutting seats 54, so that the cutting knife 53 is forced to rapidly move downwards to realize the action of shearing the reinforcing steel bars 13, and the shearing action is realized while feeding; after the cutting is completed, the cutter 53 is rapidly restored by the elastic force of the restoring elastic member after the roller is separated from the cutter base 54. At the moment, the swing arm 9 is matched with the transmission eccentric wheel 7 to correspondingly link the sliding seat 11 to move forwards on the linear sliding rail 10 to a preset position, and a new backward moving shearing process is waited; the whole straightening feeding and shearing actions are smooth and have no pause, the shearing working efficiency is greatly improved, the shearing effect is good, and the precision is high. Preferably, when the swing arm 9 moves upward to the highest position, the included angle between the swing arm 9 and the linear slide rail 10 is 60-68 degrees, so that smooth sliding is ensured, and the phenomenon of locking is avoided.

In addition, for further promoting the shearing effect, still corresponding the below position of cutter 53 and arranging be equipped with unsteady supporting device 14 on the base 51, see fig. 10 and 11, this unsteady supporting device 14 can support the reinforcing bar 13 that stretches out from the through-hole of wire alignment mould 52, ensures that reinforcing bar 13 can the straight line and keep flat, avoids bending down because of reinforcing bar 13 self gravity and leads to oblique shearing phenomenon. When the cutter 53 rapidly descends to cut the reinforcing steel bars 13, the floating supporting device 14 synchronously descends due to stress, and the purpose of cutting is achieved. After the shearing is finished, the cutter 53 retracts, and the floating supporting device 14 resets to support the reinforcing steel bars 13 which newly extend out of the through holes of the wire straightening die 52, so that the straightness of the reinforcing steel bars 13 is ensured, and the shearing precision is ensured. Specifically, the floating supporting device 14 includes a supporting block 141, a spring 142 and a limiting plate 143, a mounting cavity 511 is provided on the base 51 below the cutter 53, a vertical slot 1411 is provided on the lower portion of the supporting block 141, a concave position communicated with the vertical slot 1411 is provided in the upper portion of the supporting block 141, the base 51 is movably located in the mounting cavity, one end of the limiting plate 143 is fixed on the base 51, the other end of the limiting plate 143 extends into the vertical slot 1411 to form a supporting portion, the spring 142 is located in the concave position, and the lower end of the spring is pressed against the limiting plate 143 to force the supporting block 141 to move upward integrally to support the reinforcing steel bar 13.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are used in the description, these terms are used for convenience of description and do not limit the present invention in any way, and it is within the scope of the present invention to use the same or similar machines.

Claims

1. A numerical control straightening and shearing machine comprises a frame and is characterized by also comprising a feeding length counting device, a bracket, a driving device, a shearing device, a transmission shaft, a transmission eccentric wheel, a shearing eccentric wheel, a swing arm, a linear slide rail, a slide seat and a conveying straightening device, the conveying straightening device, the feeding length-counting device and the bracket are arranged on the frame in sequence, the linear slide rail is arranged on the frame along the feeding track of the conveying straightening device, the sliding seat is movably arranged on the linear slide rail, the transmission shaft is arranged on the bracket, the transmission eccentric wheel and the shearing eccentric wheel are arranged on the transmission shaft, the shearing device is arranged on the sliding seat corresponding to the lower position of the shearing eccentric wheel, when the shearing eccentric wheel rotates, the shearing device can be pushed to do a shearing action, one end of the swing arm is hinged on the sliding seat, and the other end of the swing arm is provided with a wheel rim which can be sleeved on the transmission eccentric wheel; the driving device drives the transmission shaft to rotate.

2. A numerically controlled straightening shear according to claim 1, characterized in that: the feeding length measuring device comprises a length measuring frame, an encoder, a driving wheel, a line pressing wheel, a line feeding guide seat and a line outgoing guide seat, wherein the driving wheel is arranged at the lower part of the length measuring frame, the encoder is arranged on the length measuring frame and connected with the driving wheel, the line pressing wheel is arranged on the length measuring frame through an adjusting mechanism, a material passing passageway is formed between the line pressing wheel and the driving wheel, and the line feeding guide seat and the line outgoing guide seat are correspondingly arranged at the two sides of the middle part of the length measuring frame corresponding to the inlet and the outlet of the feeding passageway.

3. A numerically controlled straightening shear according to claim 1, characterized in that: the driving device comprises a driving motor, a driving wheel, a flywheel and a belt, wherein the flywheel is arranged at the end part of the driving wheel, the driving motor is arranged on the rack, and the driving wheel is arranged on a driving shaft of the driving motor and is connected with the flywheel through the belt.

4. A numerically controlled straightening shear according to claim 1, characterized in that: and a needle bearing is arranged between the transmission eccentric wheel and the rim.

5. A numerically controlled straightening shear according to claim 1, characterized in that: and the convex part of the shearing eccentric wheel is provided with a roller.

6. A numerically controlled straightening shear according to claim 1, characterized in that: the shearing device comprises a base, a wire straightening die, a cutter, a cutting seat and a reset elastic part, wherein the wire straightening die is arranged on the base, the outlet position of the corresponding wire straightening die is positioned on the base, the cutter groove matched with the cutter is vertically arranged on the base, the cutter is inserted into the cutter groove, the lower end of the cutter extends to the outlet position of the wire straightening die, the reset elastic part is sleeved on the cutter, the lower end of the reset elastic part is jacked on the base to force the cutter to go upwards to reset, the cutting seat comprises a vertical guide part and a horizontal pressing part horizontally connected to the upper end of the vertical guide part, the base is provided with a guide groove matched with the vertical guide part, and the horizontal pressing part presses the upper end surface of the cutter.

7. A numerically controlled straightening shear according to claim 6, characterized in that: the middle part of the cutter is provided with a vertical through groove, and the base is provided with a guide post penetrating through the vertical through groove.

8. A numerically controlled straightening shear according to claim 1, characterized in that: the conveying straightening device comprises a front conveying assembly, a rear conveying assembly, a conveying motor, a straightening assembly and a straightening motor, wherein the front conveying assembly, the straightening assembly and the rear conveying assembly are sequentially arranged on the rack, the conveying motor is arranged at the bottom of the rack, and the front conveying assembly and the rear conveying assembly are driven by a chain transmission assembly to synchronously rotate and convey materials; the straightening motor is arranged at the bottom of the rack and is driven by the belt transmission assembly to automatically straighten the materials.

9. A numerically controlled straightening shear according to claim 8, characterized in that: the front conveying assembly comprises a feeding frame, a driving wheel, a driven wheel, a lower pressing seat, an upper pressing seat, a reset spring, a pressure spring and a feeding handle, the driving wheel is arranged on the lower portion of the feeding frame through the lower pressing seat, the upper pressing seat is movably arranged on the upper portion of the feeding frame corresponding to the upper position of the lower pressing seat, the reset spring is arranged between the lower pressing seat and the upper pressing seat, a threaded hole matched with the feeding handle is formed in the top of the feeding frame, the feeding handle is screwed into the threaded hole and is pressed on the upper pressing seat through the pressure spring in a jacking mode, the driven wheel is arranged on the upper pressing seat, and a feeding channel is formed between the driven wheel and the driving wheel.

10. A numerically controlled straightening shear according to claim 8, characterized in that: the straightening assembly comprises bearing seats, a rotary drum and straightening blocks, the two bearing seats are symmetrically arranged, one end of the rotary drum is arranged on one bearing seat through a straightening leading-in shaft, the other end of the rotary drum is arranged on the other bearing seat through a straightening leading-out shaft, the straightening blocks are sequentially arranged in the rotary drum in a staggered mode along the central axis of the rotary drum, and a straightening groove is formed in one surface, facing the central axis of the rotary drum, of each straightening block.