CNC straightening and shearing machine

Abstract

The invention discloses a numerical control straightening shearing machine, which comprises a frame, a feeding length measuring 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 and straightening device. The conveying and straightening device straightens the material and then conveys it. At the same time, 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 cooperates with the transmission eccentric wheel to realize the linkage slide seat to move backward on the linear slide rail. The speed at which the shearing device moves backward with the slide seat is consistent with the feeding speed of the conveying and straightening device, so that the cutting knife of the shearing device and the material are relatively still. Subsequently, the shearing eccentric wheel pushes the cutting knife of the shearing device to perform a cutting action, so that the shearing action is performed while feeding the material. The entire straightening, feeding and shearing action is smooth and has no pauses, which greatly improves the shearing work efficiency and effectively guarantees the shearing accuracy, which is conducive to wide promotion and application.

Description

Technical Field

[0001] The invention relates to the technical field of shearing machines, and in particular to a numerically controlled straightening shearing machine. Background Art

[0002] Traditional steel cutting generally adopts the method of manual punching. Manual punching has the following disadvantages: 1. High labor intensity for workers; 2. High production cost and poor efficiency; 3. Low precision and high product scrap rate; 4. High noise and certain danger. With the continuous improvement of industrial automation, the traditional manual shearing method can no longer meet the development needs of society. With the continuous increase of labor costs and social competitiveness, in order to occupy a place in the fierce competition, it must be backed by strong industrial automation to avoid being eliminated.

[0003] The invention with publication number "CN202070908U" and name "Fully Automatic Steel Straightening and Shearing Machine" discloses a fully automatic steel straightening and shearing machine, including a straightening and feeding part, a cylinder part, a cutting part, and a feeding rack; the output end of the feeding rack is provided with a straightening and feeding part, and the output end of the straightening and feeding part is provided with a cutting part, and the upper part of the cutting part is connected to the cylinder part. Although it can achieve the purpose of straightening and shearing, it is necessary to stop feeding and then shear during cutting, and the work efficiency is low. If shearing is performed while feeding, the cutter will be subjected to a horizontal force, which is easy to damage the cutter, and when the steel is pressed on the cutter, it will cause the steel to deform, affecting the shearing accuracy. Summary of the invention

[0004] In view of the above-mentioned shortcomings, the object of the present invention is to provide a CNC straightening and shearing machine with ingenious and reasonable structural design, high working efficiency and good shearing effect.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a CNC straightening and shearing machine, which also includes a feeding and length measuring 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 and straightening device. The conveying and straightening device, the feeding and length measuring 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 and straightening device, the slide 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 slide seat at a position below the shearing eccentric wheel, and can push the shearing device to perform a wire cutting action when the shearing eccentric wheel rotates, one end of the swing arm is hinged on the slide seat, and the other end is provided with a wheel ring that can be sleeved on the transmission eccentric wheel; the driving device drives the transmission shaft to rotate.

[0006] As a preferred solution of the present invention, the feeding length measuring device includes a length measuring frame, an encoder, a transmission wheel, a wire pressing wheel, an incoming wire guide seat and an outgoing wire guide seat, the transmission wheel is arranged at the lower part of the length measuring frame, the encoder is arranged on the length measuring frame and is connected to the transmission wheel, the wire pressing wheel is arranged on the length measuring frame through an adjusting mechanism, a material passing passage is formed between the wire pressing wheel and the transmission wheel, and the incoming wire guide seat and the outgoing wire guide seat are correspondingly arranged at both sides of the middle part of the length measuring frame at the entrance and exit of the feeding passage.

[0007] As a preferred solution of the present invention, the driving device includes a driving motor, a driving wheel, a flywheel and a belt, the flywheel is arranged at the end of the transmission wheel, the driving motor is arranged on the frame, the driving wheel is arranged on the driving shaft of the driving motor, and is connected to the flywheel through the belt.

[0008] As a preferred solution of the present invention, a needle bearing is provided between the transmission eccentric wheel and the wheel rim.

[0009] As a preferred solution of the present invention, a roller is provided on the raised portion of the shear eccentric wheel.

[0010] As a preferred embodiment of the present invention, the shearing device includes a base, a wire straightening die, a cutter, a cutting seat and a reset elastic component. The wire straightening die is arranged on the base, and a knife groove corresponding to the outlet position of the wire straightening die is vertically provided on the base and matched with the cutter. The cutter is inserted into the knife groove, and the lower end of the cutter extends to the outlet position of the wire straightening die. The reset elastic component is sleeved on the cutter, and the lower end presses on the base to force the cutter to reset upward. The cutting seat includes a vertical guide portion and a horizontal pressing portion horizontally connected to the upper end of the vertical guide portion. The base is provided with a guide groove matched with the vertical guide portion, and the horizontal pressing portion presses on the upper end surface of the cutter.

[0011] As a preferred solution of the present invention, the wire straightening die is a round rod, a through hole is axially arranged on the round rod, and an entrance end of the through hole is trumpet-shaped.

[0012] As a preferred solution of the present invention, a vertical through slot is provided in the middle of the cutter, and a guide column penetrating the vertical through slot is provided on the base.

[0013] As a preferred solution of the present invention, a screw hole is provided on the surface of the horizontal pressing portion facing the cutter, and an adjusting bolt is screwed into the screw hole.

[0014] As a preferred solution of the present invention, a locking nut is screwed onto the adjusting bolt.

[0015] As a preferred embodiment of the present invention, the conveying and straightening device includes a front conveying component, a rear conveying component, a conveying motor, a straightening component and a straightening motor. The front conveying component, the straightening component and the rear conveying component are arranged in sequence on a frame. The conveying motor is arranged at the bottom of the frame, and drives the front conveying component and the rear conveying component to synchronously rotate and convey materials through a chain transmission component; the straightening motor is arranged at the bottom of the frame, and drives the straightening component through a belt transmission component to automatically straighten the material.

[0016] As a preferred scheme of the present invention, the front conveying assembly includes a feeding rack, a driving wheel, a driven wheel, a lower pressure seat, an upper pressure seat, a return spring, a pressure spring and a feeding handle. The driving wheel is arranged at the lower part of the feeding rack through the lower pressure seat, and the upper pressure seat is movably arranged at the upper part of the feeding rack corresponding to the upper position of the lower pressure seat. The return spring is arranged between the lower pressure seat and the upper pressure seat. The top of the feeding rack is provided with a threaded hole matched with the feeding handle. The feeding handle is screwed into the threaded hole and pressed against the upper pressure seat by the pressure spring. The driven wheel is arranged on the upper pressure seat, and a feeding channel is formed between the driven wheel and the driving wheel. The driven wheel is connected to the driving wheel through a synchronous gear to achieve synchronous rotation.

[0017] As a preferred embodiment of the present invention, the straightening assembly includes a bearing seat, a rotating drum and a straightening block. The two bearing seats are symmetrically arranged. One end of the rotating drum is arranged on one of the bearing seats through a straightening guide shaft, and the other end is arranged on the other bearing seat through a straightening guide shaft. A plurality of straightening blocks are arranged in the rotating drum in an alternating manner along the central axis of the rotating drum, and a straightening groove is provided on a surface of the straightening block facing the central axis of the rotating drum.

[0018] The beneficial effects of the present invention are as follows: the structural design of the present invention is ingenious and reasonable, the material is straightened by the conveying and straightening device and then conveyed, and at the same time, the driving device synchronously drives the transmission shaft to drive the transmission eccentric wheel and the shearing eccentric wheel to rotate simultaneously, and the swing arm cooperates with the transmission eccentric wheel to realize the backward movement of the linkage slide on the linear slide rail, and the speed at which the shearing device moves backward with the slide is consistent with the feeding speed of the conveying and straightening device, so that the cutter of the shearing device and the material are relatively still; then, the shearing eccentric wheel pushes the cutter of the shearing device to cut the material, so that the shearing action is performed while feeding the material, and the entire straightening, feeding and shearing actions are smooth and without pause, which greatly improves the shearing work efficiency, and effectively solves the problems that the traditional cutter is easily damaged by force and the material deformation affects the shearing quality, thereby ensuring the shearing accuracy and facilitating wide promotion and application.

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the conveying and straightening device in the present invention.

[0022] Figure 3 It is a structural schematic diagram of the front conveying component in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the straightening assembly in the present invention.

[0024] Figure 5 It is a structural schematic diagram of the straightening block in the present invention.

[0025] Figure 6 It is a partial structural schematic diagram of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the feeding length measuring device in the present invention.

[0027] Figure 8 The internal structure of the present invention is shown in FIG. Figure 1 .

[0028] Fig. 9 The internal structure of the present invention is shown in FIG. Figure 2 .

[0029] Fig.10 It is a partial cross-sectional structural schematic diagram of the present invention.

[0030] Fig.11 It is a structural schematic diagram of the floating support device in the present invention. DETAILED DESCRIPTION

[0031] For example, see Figures 1 to 11 The present embodiment provides a CNC straightening and shearing machine, which includes a frame 1, a feeding length measuring device 2, a bracket 3, a driving device 4, a shearing device 5, a transmission shaft 6, a transmission eccentric wheel 7, a shearing eccentric wheel 8, a swing arm 9, a linear slide rail 10, a slide seat 11 and a conveying and straightening device 12.

[0032] Preferably, a plurality of through holes are provided on the transmission eccentric wheel 7, so as to reduce the material and weight while ensuring the structural strength, reduce the shaking during high-speed operation, and improve the operating stability.

[0033] The conveying and straightening device 12, the feeding length measuring device 2 and the bracket 3 are arranged on the frame 1 in sequence, the linear slide 10 is arranged on the frame 1 along the feeding track of the conveying and straightening device 12, the slide 11 is movably arranged on the linear slide 10, the transmission shaft 6 is arranged on the bracket 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 11 at the lower position corresponding to the shearing eccentric wheel 8, and can push the shearing device 5 to cut the line when the shearing eccentric wheel 8 rotates, one end of the swing arm 9 is hinged on the slide 11, and the other end is provided with a wheel rim 91 that can be sleeved on the transmission eccentric wheel 7; preferably, a needle bearing 92 is provided between the transmission eccentric wheel 7 and the wheel rim 91, so that the transmission eccentric wheel 7 and the wheel rim 91 cooperate more smoothly. The driving device 4 drives the transmission shaft 6 to rotate.

[0034] See also Figure 2 The conveying and straightening device 12 includes a front conveying component 121, a rear conveying component 122, a conveying motor 123, a straightening component 124 and a straightening motor 125. The front conveying component 121, the straightening component 124 and the rear conveying component 122 are arranged in sequence on the frame 1. The conveying motor 123 is arranged at the bottom of the frame 1, and drives the front conveying component 121 and the rear conveying component 122 to rotate synchronously and convey materials through a chain transmission component 126; the straightening motor 125 is arranged at the bottom of the frame 1, and drives the straightening component 124 through a belt transmission component 127 to automatically straighten the material.

[0035] See also Figure 3 The front conveying assembly 121 includes a feeding frame 1211, a driving wheel 1212, a driven wheel 1213, a lower pressing seat 1214, an upper pressing seat 1215, a return spring 1216, a pressure spring 1217 and a feeding handle 1218. The driving wheel 1212 is arranged at the lower part of the feeding frame 1211 through the lower pressing seat 1214, and the upper pressing seat 1215 is movably arranged at the upper part of the feeding frame 1211 corresponding to the upper position of the lower pressing seat 1214. The return spring 1216 is arranged at the lower pressing seat 1214 and The top of the feeding frame 1211 is provided with a threaded hole adapted to the feeding handle 1218 between the upper pressing seats 1215, the feeding handle 1218 is screwed into the threaded hole and pressed on the upper pressing seat 1215 by the pressure spring 1217, the driven wheel 1213 is arranged on the upper pressing seat 1215, and a feeding channel is formed between the driven wheel 1213 and the driving wheel 1212, the driven wheel 1213 and the driving wheel 1212 are connected by a synchronous gear 1219 to realize synchronous rotation. The structure of the rear conveying assembly 122 is consistent with that of the front conveying assembly 121.

[0036] See also Figure 4The straightening assembly 124 includes a bearing seat 1241, a rotating drum 1242 and a straightening block 1243. The two bearing seats 1241 are symmetrically arranged. One end of the rotating drum 1242 is arranged on one of the bearing seats 1241 through a straightening introduction shaft 1244, and the other end is arranged on the other bearing seat 1241 through a straightening outlet shaft 1245. The rotating drum 1242 is provided with a pulley groove 1246. A plurality of straightening blocks 1243 are arranged in sequence and staggered along the central axis of the rotating drum 1242 in the rotating drum 1242. A straightening groove 12431 is provided on the side of the straightening block 1243 facing the central axis of the rotating drum 1242. The outer peripheral surface of the steel bar 13 is pressed by the straightening groove 12431, and the rotation of the rotating drum 1242 drives the plurality of straightening blocks 1243 to press the outer peripheral surface of the steel bar 13 in all directions at the same time, so as to achieve the purpose of straightening.

[0037] For details, see Figure 7 The feeding length measuring device 2 includes a length measuring frame 21, an encoder 22, a transmission wheel 23, a wire pressing wheel 24, an incoming wire guide seat 25 and an outgoing wire guide seat 26. The transmission wheel 23 is arranged at the lower part of the length measuring frame 21. The encoder 22 is arranged on the length measuring frame 21 and connected to the transmission wheel 23. Specifically, the rotating shaft of the encoder 22 is connected to the wheel axle of the transmission wheel 23 through a coupling. The wire pressing wheel 24 is arranged on the length measuring frame 21 through an adjusting mechanism 27. A material passage is formed between the wire pressing wheel 24 and the transmission wheel 23. The adjusting mechanism 27 can be a spring, a screw, etc., which is used to adjust the force of the wire pressing wheel 24 pressing against the transmission wheel 23. The incoming wire guide seat 25 and the outgoing wire guide seat 26 are arranged at the middle two sides of the length measuring frame 21 corresponding to the entrance and exit of the feeding passage.

[0038] The driving device 4 includes a driving motor 41, a driving wheel 42, a flywheel 43 and a belt 44. The flywheel 43 is arranged at the end of the transmission 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 to the flywheel 43 through the belt 44.

[0039] A roller 81 is provided at the raised portion of the shear eccentric wheel 8, and the sliding friction between the raised portion of the shear eccentric wheel 8 and the cutting seat is converted into rolling friction through the roller 81, thereby reducing friction and extending the service life.

[0040] See also Figure 8 , Fig. 9 and Fig.10The shearing device 5 includes a base 51, a wire straightening die 52, a cutter 53, a cutting seat 54 and a resetting elastic component. The wire straightening die 52 is arranged on the base 51. A knife groove matching the cutter 53 is vertically arranged on the base 51 corresponding to the outlet position of the wire straightening die 52. The cutter 53 is inserted into the knife groove, and the lower end of the cutter 53 extends to the outlet position of the wire straightening die 52. The resetting elastic component is sleeved on the cutter 53, and the lower end presses on the base 51 to force the cutter 53 to reset upward. The resetting elastic component can be a spring or an elastic rubber sleeve. The upper end of the cutter 53 is radially enlarged to form a convex protrusion. The upper end of the resetting elastic component presses on the convex protrusion, and the cutter 53 is reset by the elastic force of the resetting elastic component.

[0041] The cutting seat 54 includes a vertical guide portion and a horizontal pressing portion horizontally connected to the upper end of the vertical guide portion. The base 51 is provided with a guide groove adapted to the vertical guide portion, and the horizontal pressing portion presses on the upper end surface of the cutter 53. Preferably, a screw hole is provided on the surface of the horizontal pressing portion facing the cutter 53, and an adjusting bolt 55 is screwed into the screw hole. A locking nut is screwed on the adjusting bolt 55. The height position of the cutter 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 press against the bottom surface of the horizontal pressing portion to achieve the purpose of locking.

[0042] In this embodiment, the wire straightening mold 52 is a round rod, and a through hole is axially arranged on the round rod, and the entrance end of the through hole is trumpet-shaped to facilitate the wire to pass through. At the same time, the through hole has a certain length and has a straightening function.

[0043] A vertical through slot is provided in the middle of the cutter 53 , and a guide post 56 penetrating the vertical through slot is provided on the base 51 , which can limit and guide the lifting and lowering action of the cutter 53 and improve the shearing accuracy.

[0044] During operation, this embodiment takes the shearing of steel bars 13 as an example. The steel bars 13 are straightened by the conveying and straightening device 12 and then conveyed forward. The steel bars 13 pass through the through hole of the wire straightening die 52 after passing through the feeding length measuring device 2; at this time, the driving motor 41 drives the transmission shaft 6 to rotate, and the transmission shaft 6 simultaneously drives the transmission eccentric wheel 7 and the shearing eccentric wheel 8 to rotate, and the swing arm 9 cooperates with the transmission eccentric wheel 7 to realize the linkage slide 11 to move backward on the linear slide rail 10, and the encoder 22 is used to detect the conveying speed of the steel bars 13 and feed it back to the controller, and the controller calculates the conveying speed per unit time to obtain the conveying length, and adjusts the conveying motor 123 and the driving motor 41 accordingly according to the conveying speed. The rotation speed makes the speed of the shearing device 5 moving backward with the slide 11 consistent with the speed of the steel bar 13 being sent forward, so that the cutter 53 of the shearing device 5 and the steel bar 13 are relatively still; when the steel bar 13 passes through the through hole of the wire straightening die 52 to a predetermined length, the roller on the raised part of the shearing eccentric wheel 8 just presses on the cutting seat 54, forcing the cutter 53 to quickly move downward to shear the steel bar 13, and to perform the shearing action while feeding; after the shearing is completed, after the roller leaves the cutting seat 54, the elastic force of the reset elastic component is used to quickly reset the cutter 53. At this time, the corresponding linkage slide 11 moves forward to the predetermined position on the linear slide rail 10 through the swing arm 9 and the transmission eccentric wheel 7, waiting for a new round of backward shearing process; the entire straightening, feeding and shearing action is smooth and without pause, which greatly improves the shearing work efficiency, and has good shearing effect and high precision. Preferably, when the swing arm 9 moves up to the highest position, the angle between the swing arm 9 and the linear slide rail 10 is 60 to 68 degrees, ensuring smooth sliding and avoiding jamming.

[0045] In addition, in order to further improve the shearing effect, a floating support device 14 is provided on the base 51 corresponding to the lower position of the cutter 53, see Fig.10 and Fig.11The floating support device 14 can support the steel bar 13 extending from the through hole of the wire straightening die 52, ensuring that the steel bar 13 can be placed straight and flat, avoiding the oblique shearing phenomenon caused by the bending of the steel bar 13 due to its own gravity. When the cutter 53 moves downward quickly to start shearing the steel bar 13, the floating support device 14 moves downward synchronously due to the force, achieving the purpose of shearing. After the shearing is completed, the cutter 53 retracts, and the floating support device 14 resets to support the steel bar 13 newly extending from the through hole of the wire straightening die 52, ensuring the straightness of the steel bar 13 and the shearing accuracy. Specifically, the floating supporting device 14 includes a supporting block 141, a spring 142 and a limiting plate 143. An installation cavity 511 is provided on the base 51 at a position below the cutter 53. A vertical slot 1411 is provided at the lower portion of the supporting block 141. A recess connected to the vertical slot 1411 is provided in the upper portion of the supporting block 141. The base 51 is movably located in the installation cavity. One end of the limiting plate 143 is fixed on the base 51, and the other end extends into the vertical slot 1411 to form a supporting portion. The spring 142 is located in the recess, and the lower end presses on the limiting plate 143 to force the supporting block 141 to move upward as a whole to achieve the purpose of supporting the steel bar 13.

[0046] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also change and modify the above embodiments. 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 also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. The use of the same or similar machinery is within the protection scope of the present invention.

Claims

1. A CNC straightening and shearing machine, comprising a frame, characterized in that: It also includes a feeding length measuring 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 and straightening device. The conveying and straightening device, the feeding length measuring 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 and straightening device. The slide 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 slide seat at a position below the shearing eccentric wheel, and can push the shearing device to perform a wire cutting action when the shearing eccentric wheel rotates. One end of the swing arm is hinged on the slide seat, and the other end is provided with a wheel ring that can be sleeved on the transmission eccentric wheel; the driving device drives the transmission shaft to rotate; The feeding length measuring device comprises a length measuring frame, an encoder, a transmission wheel, a wire pressing wheel, an inlet wire guide seat and an outlet wire guide seat, wherein the transmission wheel is arranged at the lower part of the length measuring frame, the encoder is arranged on the length measuring frame and connected to the transmission wheel, the wire pressing wheel is arranged on the length measuring frame through an adjustment mechanism, a material passing passage is formed between the wire pressing wheel and the transmission wheel, and the inlet wire guide seat and the outlet wire guide seat are arranged at both sides of the middle part of the length measuring frame corresponding to the inlet and outlet of the feeding passage; The shearing device comprises a base, a wire straightening die, a cutter, a cutting seat and a reset elastic component. The wire straightening die is arranged on the base, and a knife groove matching the cutter is vertically arranged on the base corresponding to the outlet position of the wire straightening die. The cutter is inserted into the knife groove, and the lower end of the cutter extends to the outlet position of the wire straightening die. The reset elastic component is sleeved on the cutter, and the lower end presses on the base to force the cutter to reset upward. The cutting seat comprises a vertical guide part and a horizontal pressing part horizontally connected to the upper end of the vertical guide part. A guide groove matching the vertical guide part is arranged on the base, and the horizontal pressing part presses the upper end surface of the cutter. A vertical through slot is provided in the middle of the cutter, and a guide column penetrating the vertical through slot is provided on the base; the conveying and straightening device comprises a front conveying assembly, a rear conveying assembly, a conveying motor, a straightening assembly and a straightening motor, the front conveying assembly, the straightening assembly and the rear conveying assembly are arranged in sequence on the frame, the conveying motor is arranged at the bottom of the frame, and the front conveying assembly and the rear conveying assembly are driven by a chain transmission assembly to synchronously rotate and convey the material; the straightening motor is arranged at the bottom of the frame, and the straightening assembly is driven by a belt transmission assembly to automatically straighten the material; The front conveying assembly includes a feeding frame, a driving wheel, a driven wheel, a lower pressure seat, an upper pressure seat, a return spring, a pressure spring and a feeding handle. The driving wheel is arranged at the lower part of the feeding frame through the lower pressure seat. The upper pressure seat is movably arranged at the upper part of the feeding frame corresponding to the upper position of the lower pressure seat. The return spring is arranged between the lower pressure seat and the upper pressure seat. The top of the feeding frame is provided with a threaded hole matched with the feeding handle. The feeding handle is screwed into the threaded hole and pressed against the upper pressure seat by the pressure spring. The driven wheel is arranged on the upper pressure seat, and a feeding channel is formed between the driven wheel and the driving wheel.

2. The CNC straightening and shearing machine according to claim 1, characterized in that: The driving device comprises a driving motor, a driving wheel, a flywheel and a belt. The flywheel is arranged at the end of the transmission wheel, the driving motor is arranged on the frame, the driving wheel is arranged on the driving shaft of the driving motor and is connected to the flywheel through the belt.

3. The CNC straightening and shearing machine according to claim 1, characterized in that: A needle bearing is arranged between the transmission eccentric wheel and the wheel rim.

4. The CNC straightening and shearing machine according to claim 1, characterized in that: A roller is arranged on the raised portion of the shear eccentric wheel.

5. The CNC straightening and shearing machine according to claim 1, characterized in that: The straightening assembly includes a bearing seat, a rotating drum and a straightening block. The two bearing seats are symmetrically arranged. One end of the rotating drum is arranged on one of the bearing seats through a straightening guide shaft, and the other end is arranged on the other bearing seat through a straightening guide shaft. A plurality of straightening blocks are arranged in the rotating drum in an alternating manner along the central axis of the rotating drum, and a straightening groove is provided on a surface of the straightening block facing the central axis of the rotating drum.

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