Double-arm punching device

Abstract

The invention provides a double-arm punching device, and relates to the technical field of punching, the double-arm punching device comprises a cabinet, the two sides of the cabinet are respectively provided with a deviation rectifying and tensioning mechanism and a second protection box, the second protection box is provided with a second air swelling shaft, the cabinet is internally provided with a bearing plate, the top of the bearing plate is provided with two third linear guide rails, and the top of the bearing plate is provided with a second air swelling shaft. And two punching arms are arranged at the tops of the two third linear guide rails, each punching arm comprises a first linear module arranged between the tops of the two third linear guide rails, a second linear module is arranged at the bottom of each first linear module, and a moving frame is arranged at the top of each first linear module. According to the device, the two devices are arranged and can freely move in the two horizontal directions, so that the device can punch multiple positions of a roll-shaped material at the same time, the punching efficiency is remarkably improved, meanwhile, flexible adjustment of the punching position is ensured through mobility, and the application range of the device is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of punching, in particular to a double-arm punching device. Background Art

[0002] In the field of material processing, especially in the process of processing roll materials, punching is a crucial process. In the existing technology, the punching of roll materials mostly relies on single-arm punching equipment or fixed-position punching devices. These methods are incapable of processing wide materials or when the punching position needs to be flexibly adjusted; single-arm punching equipment often has problems such as low punching efficiency and limited punching position, while fixed-position punching devices are difficult to meet diverse punching needs, especially when precise punching of different parts of the material is required, its flexibility and applicability are greatly reduced. Therefore, we made improvements to this and proposed a double-arm punching device. Summary of the invention

[0003] The purpose of the present invention is to address the problem that the existing single-arm punching equipment often has the problems of low punching efficiency and limited punching position, while the fixed-position punching device is difficult to meet the diverse punching needs.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention provides a double-arm punching device to improve the above-mentioned problem.

[0005] The specific application is as follows: A double-arm punching device comprises a cabinet, wherein a deviation correction and material stretching mechanism and a second protective box are respectively arranged on both sides of the cabinet, a second air expansion shaft is arranged on the second protective box, a carrying plate is installed in the cabinet, two third linear guides are installed on the top of the carrying plate, two punching arms are arranged on the top of the two third linear guides, the punching arm comprises a first linear module arranged between the tops of the two third linear guides, a second linear module is arranged at the bottom of the first linear module, a moving frame is arranged on the top of the first linear module, an opening is arranged on the moving frame, a protective cover is installed on the top of the moving frame, and a plurality of punching components located in the protective cover are installed on the top of the moving frame.

[0006] As a preferred technical solution of the present application, the punching assembly includes a supporting frame installed on the top of the mobile frame, a first servo motor is installed on the side of the supporting frame, the output shaft of the first servo motor penetrates into the supporting frame and is connected to an eccentric wheel, a connecting shaft is connected to the eccentric wheel, the bottom end of the connecting shaft passes through the mobile frame and extends into the opening and is connected to a punching head, and a base located below the punching head is installed at the bottom of the open inner cavity.

[0007] As a preferred technical solution of the present application, a CCD camera is installed on the top of the movable frame, and the CCD camera is located on one side of the supporting frame.

[0008] As a preferred technical solution of the present application, two fourth center guide rails are installed on the top of the supporting plate, which are respectively located on both sides of a number of punching arms, and two columns are arranged on each of the fourth center guide rails. A C-shaped frame is installed on the top of the column, and a first cylinder is installed on the top of the C-shaped frame. The piston rod of the first cylinder passes through the C-shaped frame and extends into the C-shaped frame and is connected to a pressure plate.

[0009] As a preferred technical solution of the present application, a second cylinder is installed on the side of the column, the piston rod of the second cylinder is fixedly connected to a cushion block, and the cushion block is in contact with the top of the bearing plate.

[0010] As a preferred technical solution of the present application, a material pressing mechanism is provided on the top of the carrying plate, and the position of the material pressing mechanism is close to the second protection box; The pressing mechanism comprises two third support plates mounted on the top of the carrier plate, an active roller is rotatably connected between the two third support plates through a bearing, a second servo motor is mounted on the side of one of the third support plates, and an output shaft of the second servo motor is connected to the active roller; A slide groove is provided on the top of the two third support plates, and a third cylinder is installed on the top of the two third support plates. The piston rods of the two third cylinders extend into the two slide grooves respectively and are fixedly connected to the second connecting seat. A driven roller is rotatably connected between the two second connecting seats through a bearing.

[0011] As a preferred technical solution of the present application, a third feeding roller is connected between the two third support plates on one side close to the second protection box; A reduction motor is installed in the second protective box, the reduction motor is connected to a magnetic powder separator, and the magnetic powder separator is connected to the second air expansion shaft.

[0012] As a preferred technical solution of the present application, the deviation correction and material stretching mechanism includes a support frame installed on a cabinet, a plurality of first material transfer rollers are installed in the support frame, second linear guide rails are provided on the inner walls on both sides of the support frame, and a gravity roller located below the first material transfer roller is connected between the two second linear guide rails.

[0013] As a preferred technical solution of the present application, a detection structure is provided on the support frame, and the detection structure includes a support member installed on the support frame, a sleeve is slidably connected to the support member, and a correction sensor is connected to the sleeve.

[0014] As a preferred technical solution of the present application, a correction structure is provided on one side of the support frame, and the correction structure includes a correction component located on one side of the support frame, and a discharge component is provided on the correction component.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: In order to solve the problems of low punching efficiency and limited punching position in the single-arm punching equipment in the prior art, and the problem that the fixed-position punching device is difficult to meet the diverse punching needs, the present application sets two and relies on and can move freely in two horizontal directions, so that the present invention can punch holes in multiple positions of the roll material at the same time, which significantly improves the punching efficiency. At the same time, the mobility ensures the flexible adjustment of the punching position, thereby improving the scope of application of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the double-arm punching device provided in this application; Figure 2 A schematic diagram of the front view of the double-arm punching device provided in this application; Figure 3 A schematic diagram of the structure of the deviation correction and material stretching mechanism of the double-arm punching device provided in this application; Figure 4 A schematic diagram of the structure of the hand-tightened bolt of the double-arm punching device provided in this application; Figure 5 The double-arm punching device provided in this application Figure 4 A rear view structural diagram of ; Figure 6 A schematic diagram of the side structure of the mounting plate of the double-arm punching device provided in the present application; Figure 7 A schematic diagram of the structure of the correction sensor of the double-arm punching device provided in this application; Figure 8 A schematic diagram of the structure of the supporting plate, punching arm and material pressing mechanism of the double-arm punching device provided in this application; Fig. 9 A schematic diagram of the structure of the top of the mobile frame of the double-arm punching device provided in this application; Fig.10 The double-arm punching device provided in this application Fig. 9 A schematic diagram of the front view structure of Fig.11 A schematic diagram of the structure of the connecting shaft and the punching head of the double-arm punching device provided in this application; Fig.12 A schematic structural diagram of the material pressing mechanism of the double-arm punching device provided in this application.

[0017] Indicated in the figure: 1. Cabinet; 2. Correction and tensioning mechanism; 201. First mounting seat; 202. First air expansion shaft; 203. First linear guide rail; 204. Mounting plate; 205. Connecting port; 206. Correction device; 207. Second mounting seat; 208. First connecting seat; 209. Driving motor; 210. Support frame; 211. First feeding roller; 212. First supporting plate; 213. Correction sensor; 214. Second linear guide rail; 215. Gravity roller; 216. Sensor; 217. First protective box; 218. Sleeve; 219. Hand screw bolt; 220. Connecting rod; 221. Second supporting plate; 222. Second feeding roller; 3. Second protective box; 301. Second air expansion shaft; 4. Load-bearing plate; 401. Third Linear guide; 402, column; 403, C-shaped frame; 404, first cylinder; 405, pressure plate; 406, fourth center guide; 407, second cylinder; 408, cushion block; 5, punching arm; 501, first linear module; 502, second linear module; 503, moving frame; 504, open; 505, protective cover; 506, bearing frame; 507, first servo motor; 508, eccentric wheel; 509, connecting shaft; 510, punching head; 511, base; 512, CCD camera; 6, pressing mechanism; 601, third support plate; 602, active roller; 603, second servo motor; 604, third cylinder; 605, driven roller; 606, second connecting seat; 607, third feeding roller. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] Example 1, please refer to Figure 1-2 , Figure 8-Figure 10The double-arm punching device comprises a cabinet 1, a deviation correction and material stretching mechanism 2 and a second protection box 3 are respectively arranged on both sides of the cabinet 1, a second air expansion shaft 301 is arranged on the second protection box 3, a bearing plate 4 is installed in the cabinet 1, two third linear guide rails 401 are installed on the top of the bearing plate 4, two punching arms 5 are arranged on the top of the two third linear guide rails 401, the punching arm 5 comprises a first linear module 501 arranged between the tops of the two third linear guide rails 401, a second linear module 502 is arranged at the bottom of the first linear module 501, and a movable The movable frame 503 is provided with an opening 504, a protective cover 505 is installed on the top of the movable frame 503, and a plurality of punching components located in the protective cover 505 are installed on the top of the movable frame 503; the present application sets two punching arms 5, and the punching arms 5 can realize free movement in two horizontal directions by relying on the first linear module 501 and the second linear module 502, so that the present invention can punch holes in multiple positions of the roll material at the same time, which significantly improves the punching efficiency. At the same time, the mobility of the punching arm 5 ensures the flexible adjustment of the punching position, thereby improving the scope of application of the present application.

[0022] Further, such as Figure 9-11 As shown, the punching assembly includes a supporting frame 506 installed on the top of the movable frame 503, a first servo motor 507 is installed on the side of the supporting frame 506, the output shaft of the first servo motor 507 penetrates into the supporting frame 506 and is connected to an eccentric wheel 508, a connecting shaft 509 is connected to the eccentric wheel 508, the bottom end of the connecting shaft 509 passes through the movable frame 503 and extends into the opening 504 and is connected to a punching head 510, a base 511 located below the punching head 510 is installed at the bottom of the inner cavity of the opening 504, the first servo motor 507 drives the eccentric wheel 508 to rotate, and can drive the connecting shaft 509 and the punching head 510 to move up and down, and the punching head 510 can punch holes in the material during the downward movement.

[0023] Further, such as Figure 9-11 As shown, a CCD camera 512 is installed on the top of the movable frame 503, and the CCD camera 512 is located on one side of the support frame 506. The support frame 506 is transparent. The CCD camera 512 can detect the position of the connecting shaft 509 and then confirm the position of the punching head 510.

[0024] Further, such as Figure 8As shown, two fourth center rails 406 are installed on the top of the supporting plate 4, which are respectively located on both sides of a number of punching arms 5. Two columns 402 are arranged on each of the fourth center rails 406. A C-shaped frame 403 is installed on the top of the column 402. A first cylinder 404 is installed on the top of the C-shaped frame 403. The piston rod of the first cylinder 404 passes through the C-shaped frame 403 and extends into the C-shaped frame 403 and is connected to a pressing plate 405. The C-shaped frame 403 is for materials to be punched to pass through. When punching, the pressing plate 405 is driven by the first cylinder 404 to press and fix the material, which can reduce the loosening of the material during the punching process and improve the quality of the punching.

[0025] Further, such as Figure 8 As shown, a second cylinder 407 is installed on the side of the column 402, and the piston rod of the second cylinder 407 is fixedly connected to a cushion block 408, and the cushion block 408 contacts the top of the supporting plate 4. The column 402 is arranged on the fourth center guide rail 406, so that the position of the column 402 can be adjusted to meet the use requirements of materials of different widths. The second cylinder 407 pushes the cushion block 408 to contact the top of the supporting plate 4 to fix the position of the second cylinder 407, and the second cylinder 407 drives the cushion block 408 to rise, so that after the cushion block 408 is separated from the supporting plate 4, the column 402 can be pushed to move.

[0026] Example 2 further optimizes the double-arm punching device provided in Example 1. Specifically, Figure 8 and Fig.12 As shown, a material pressing mechanism 6 is provided on the top of the carrying plate 4, and the position of the material pressing mechanism 6 is close to the second protective box 3. The material can be tensioned by the material pressing mechanism 6, so that the second air expansion shaft 301 is more compact when winding the punched material, and the looseness of the material during the winding process is reduced; The material pressing mechanism 6 includes two third support plates 601 installed on the top of the carrier plate 4, and an active roller 602 is rotatably connected between the two third support plates 601 through a bearing, and a second servo motor 603 is installed on the side of one of the third support plates 601, and the output shaft of the second servo motor 603 is connected to the active roller 602, and the active roller 602 is driven to rotate by the second servo motor 603 to assist the movement of the material; A slide groove is provided on the top of the two third support plates 601, and a third cylinder 604 is installed on the top of the two third support plates 601. The piston rods of the two third cylinders 604 extend into the two slide grooves respectively and are fixedly connected to the second connecting seat 606. A driven roller 605 is rotatably connected between the two second connecting seats 606 through a bearing. The third cylinder 604 can drive the driven roller 605 to move up and down through the second connecting seat 606 to adjust the distance between the driven roller 605 and the active roller 602, thereby adjusting the force of the driven roller 605 and the active roller 602 on the material clamping.

[0027] Furthermore, a third feeding roller 607 is connected between the two third support plates 601 on one side close to the second protection box 3, and the third feeding roller 607 can assist in guiding the material; A reduction motor is installed in the second protective box 3, and the reduction motor is connected to a magnetic powder separator, which is connected to the second air expansion shaft 301. The reduction motor can drive the second air expansion shaft 301 to rotate through the magnetic powder separator, and then the punched material is rolled up through the second air expansion shaft 301.

[0028] Embodiment 3 further optimizes the double-arm punching device provided in Embodiment 1 or 2. Specifically, Figure 1-Figure 7 As shown, the deviation-correcting and stretching mechanism 2 includes a support frame 210 installed on the cabinet 1, and a plurality of first feed rollers 211 are installed in the support frame 210. The inner walls on both sides of the support frame 210 are provided with second linear guide rails 214, and a gravity roller 215 located below the first feed roller 211 is connected between the two second linear guide rails 214; in the processing and handling of rolled materials, such as textile, papermaking, plastic film and metal strip industries, the material unloading stage is a crucial link, and the material tension during the unloading process directly affects the quality and efficiency of subsequent processes; in the prior art, in order to ensure the flatness of the material, Pneumatic / hydraulic tensioning systems are often used for stable material release and proper tensioning. However, these traditional methods often have problems with complex structures and high maintenance costs. The present application sets two second linear guides 214 on the support frame 210 and sets a gravity roller 215 between the two second linear guides 214. The weight of the gravity roller 215 itself is used as the source of tensioning force without the need for an additional power source, thereby greatly reducing energy consumption and maintenance costs, and reducing complex mechanical structures and electrical control systems. It is easy to install and maintain, and the world in which the gravity of the gravity roller 215 is used for tensioning does not require manual intervention and is easy to use.

[0029] Two second support plates 221 are fixedly installed on one side of the support frame 210, and a second feeding roller 222 located below the first feeding roller 211 is fixedly connected between the two second support plates 221. The second support plates 221 can support the second feeding roller 222, and the second feeding roller 222 can guide the material; A sensor 216 located below the gravity roller 215 is installed on the support frame 210 . The sensor 216 can sense the position of the gravity roller 215 to confirm the tightness of the material.

[0030] Furthermore, a detection structure is provided on the support frame 210, and the detection structure includes a support member installed on the support frame 210, a sleeve 218 is slidably connected to the support member, and a correction sensor 213 is connected to the sleeve 218. The support member can support the sleeve 218 and the correction sensor 213, and the correction sensor 213 is used to detect whether the conveyed material is deviated; A hand bolt 219 is threadedly connected to the sleeve 218, and one end of the hand bolt 219 is inserted into the sleeve 218 and contacts the support member. When the hand bolt 219 is tightened, the position of the sleeve 218 can be fixed, and then the position of the correction sensor 213 can be fixed. After loosening the hand bolt 219, pushing the sleeve 218 can adjust the position of the correction sensor 213.

[0031] The support member includes two first support plates 212 installed on the support frame 210, and a connecting rod 220 is fixedly connected between the two first support plates 212. The sleeve 218 is sleeved on the outer surface of the connecting rod 220, and the end of the hand-tightening bolt 219 is in contact with the outer surface of the connecting rod 220. The connecting rod 220 can be supported by the first support plate 212, and the sleeve 218 can be supported by the connecting rod 220.

[0032] Furthermore, a correction structure is provided on one side of the support frame 210, and the correction structure includes a correction component located on one side of the support frame 210, and a material discharge component is provided on the correction component, and the correction component can move the material discharge component so that the material can be adjusted after being deviated; The deviation correction component includes a mounting plate 204 mounted on the cabinet 1 and located on one side of the support frame 210, a first linear guide rail 203 is mounted on the mounting plate 204, the first linear guide rail 203 is connected to the material discharge component, and the first linear guide rail 203 can connect the mounting plate 204 and the material discharge component together, and enable the material discharge component to move, so as to adjust the position of the material to achieve deviation correction; The mounting plate 204 is provided with a connecting port 205, and a first connecting seat 208 is inserted in the connecting port 205. One end of the first connecting seat 208 is connected to the material discharge assembly, and the other end of the first connecting seat 208 is connected to the deviation corrector 206. The deviation corrector 206 is connected to the second mounting seat 207, and the second mounting seat 207 is connected to the cabinet 1. The deviation corrector 206 adopts a hydraulic cylinder or a pneumatic cylinder. The deviation corrector 206 can drive the material discharge assembly to move through the first connecting seat 208, and can adjust the material discharge position to achieve deviation correction; The discharge assembly includes a first mounting seat 201 connected to a first linear guide rail 203, a first protective box 217 and a drive motor 209 located in the first protective box 217 are installed on the first mounting seat 201, a first pneumatic shaft 202 is connected between the output shaft of the drive motor 209 and the first mounting seat 201, and the drive motor 209 drives the first pneumatic shaft 202 to rotate to discharge the rolled material.

[0033] The use process of the double-arm punching device provided by the present invention is as follows: The rolled material is sleeved on the outer surface of the first air expansion shaft 202. The first air expansion shaft 202 is tightened, and one end of the material is led out and passes through the second feeding roller 222, the deviation correction sensor 213, the gravity roller 215 and the first feeding roller 211. Figure 1 and Figure 3 As shown, one end of the material passes through the cabinet 1, then passes through the C-shaped frame 403 on one side of the punching arm 5, passes through the open mouth 504, passes through the C-shaped frame 403 on the other side of the punching arm 5, then passes between the active roller 602 and the driven roller 605, passes through the third feeding roller 607, and then passes out of the cabinet 1. An empty reel is fixed on the second air expansion shaft 301, and the material is connected to the empty reel. The reduction motor can drive the second air expansion shaft 301 to rotate through the magnetic powder separator, and then the punched material is reeled up through the second air expansion shaft 301. At the same time, the driving motor 209 drives the first air expansion shaft 202 to rotate to release the material. During the release process, the deviation correction sensor 213 detects whether the material is If it is misaligned, the deviation corrector 206 drives the first mounting seat 201 to move through the first connecting seat 208, and then drives the roll material to move to correct the deviation of the material. When punching is required, the drive motor 209 and the reduction motor stop, the first cylinder 404 pushes the pressure plate 405 down to clamp the material, and the first linear module 501 and the second linear module 502 drive the moving frame 503 to move to the punching position, and the first servo motor 507 drives the connecting shaft 509 and the punching head 510 to move up and down through the eccentric wheel 508 to perform punching. After the punching is completed, the first cylinder 404 drives the pressure plate 405 to rise to release the clamping of the material, and the drive motor 209 and the reduction motor can be started again.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. Double-arm punching device, characterized in that: The invention comprises a cabinet (1), wherein two sides of the cabinet (1) are respectively provided with a deviation correction and material stretching mechanism (2) and a second protective box (3), the second protective box (3) is provided with a second air expansion shaft (301), a carrying plate (4) is installed in the cabinet (1), two third linear guide rails (401) are installed on the top of the carrying plate (4), two punching arms (5) are installed on the top of the two third linear guide rails (401), the punching arms (5) comprise a first linear module (501) arranged between the tops of the two third linear guide rails (401), a second linear module (502) is arranged at the bottom of the first linear module (501), a moving frame (503) is arranged on the top of the first linear module (501), an opening (504) is arranged on the moving frame (503), a protective cover (505) is installed on the top of the moving frame (503), and a plurality of punching components located in the protective cover (505) are installed on the top of the moving frame (503).

2. The double-arm punching device according to claim 1, characterized in that: The punching assembly comprises a support frame (506) mounted on the top of a movable frame (503); a first servo motor (507) is mounted on a side of the support frame (506); an output shaft of the first servo motor (507) penetrates into the support frame (506) and is connected to an eccentric wheel (508); a connecting shaft (509) is connected to the eccentric wheel (508); a bottom end of the connecting shaft (509) penetrates through the movable frame (503) and extends into the opening (504) and is connected to a punching head (510); a base (511) located below the punching head (510) is mounted at the bottom of the inner cavity of the opening (504).

3. The double-arm punching device according to claim 2, characterized in that: A CCD camera (512) is installed on the top of the movable frame (503), and the CCD camera (512) is located on one side of the supporting frame (506).

4. The double-arm punching device according to claim 1, characterized in that: Two fourth central guide rails (406) are installed on the top of the carrier plate (4) and are respectively located on both sides of the plurality of punching arms (5). Two upright posts (402) are arranged on each of the fourth central guide rails (406). A C-shaped frame (403) is installed on the top of the upright posts (402). A first cylinder (404) is installed on the top of the C-shaped frame (403). The piston rod of the first cylinder (404) passes through the C-shaped frame (403) and extends into the C-shaped frame (403) and is connected to a pressing plate (405).

5. The double-arm punching device according to claim 4, characterized in that: A second cylinder (407) is installed on the side of the column (402), and a piston rod of the second cylinder (407) is fixedly connected to a cushion block (408), and the cushion block (408) is in contact with the top of the bearing plate (4).

6. The double-arm punching device according to claim 1, characterized in that: A material pressing mechanism (6) is provided on the top of the carrying plate (4), and the position of the material pressing mechanism (6) is close to the second protection box (3); The material pressing mechanism (6) comprises two third support plates (601) mounted on the top of the carrier plate (4), an active roller (602) being rotatably connected between the two third support plates (601) via a bearing, a second servo motor (603) being mounted on the side of one of the third support plates (601), and an output shaft of the second servo motor (603) being connected to the active roller (602); The tops of the two third support plates (601) are each provided with a slide groove, and the tops of the two third support plates (601) are each installed with a third cylinder (604), the piston rods of the two third cylinders (604) respectively extend into the two slide grooves and are both fixedly connected to a second connecting seat (606), and a driven roller (605) is rotatably connected between the two second connecting seats (606) via a bearing.

7. The double-arm punching device according to claim 6, characterized in that: A third material transfer roller (607) is connected between one side of the two third support plates (601) close to the second protection box (3); A reduction motor is installed in the second protection box (3), the reduction motor is connected to a magnetic powder separator, and the magnetic powder separator is connected to the second air expansion shaft (301).

8. The double-arm punching device according to claim 1, characterized in that: The deflection correcting and material stretching mechanism (2) comprises a support frame (210) mounted on the cabinet (1), a plurality of first material feeding rollers (211) being mounted in the support frame (210), second linear guide rails (214) being provided on inner walls on both sides of the support frame (210), and a gravity roller (215) located below the first material feeding rollers (211) being connected between two of the second linear guide rails (214).

9. The double-arm punching device according to claim 8, characterized in that: The support frame (210) is provided with a detection structure, the detection structure comprising a support member mounted on the support frame (210), a sleeve (218) being slidably connected to the support member, and a deviation correction sensor (213) being connected to the sleeve (218).

10. The double-arm punching device according to claim 9, characterized in that: A deviation correction structure is provided on one side of the support frame (210), and the deviation correction structure comprises a deviation correction component located on one side of the support frame (210), and a material discharge component is provided on the deviation correction component.

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