Punching machine for metal band processing

Abstract

The application belongs to the technical field of metal strip processing, and particularly relates to a punching machine for metal strip processing. In view of the problem that the existing metal strip punching machine cannot directly remove burrs during punching, the following scheme is proposed. The scheme comprises a main frame, six support frames are fixed on the bottom of the main frame through bolts, a horizontally arranged first feeding supporting roller and a second feeding supporting roller are fixed on one end position between the inner walls of the two sides of the main frame through bearings, a side support is fixed on one end position of the bottom of the main frame through a bolt, and a supporting roller is fixed on the bottom between the two sides of the side support through a bearing. When the punching bottom rotating cylinder rotates, the metal scrap produced by punching will be adhered. After the punching action is completed, the driving ring rotates, the burr scraper in contact with the inner wall of the punching bottom rotating cylinder swings and sweeps the punching groove, the metal scrap formed by punching is scraped, and the long burrs at the punching position of the metal strip body are scraped.

Description

Technical Field

[0001] This invention relates to the field of metal strip processing technology, and in particular to a punching machine for metal strip processing. Background Technology

[0002] Metal strip is a strip of metal material with uniform thickness obtained by repeatedly pressing metal raw materials. The preparation of metal strip can be used as raw material for sheet metal parts. The metal strip package has the advantages of being a semi-finished product that is easy to transport and can be directly reprocessed after cutting. In the metal strip processing, there is a punching process.

[0003] Existing metal strip punching equipment has the following problems: During the punching process, long metal burrs are generated at the punching location due to the extrusion process. However, current equipment cannot directly remove the burrs at the punching location during the punching process, and existing technologies cannot easily solve this problem. Therefore, there is an urgent need for a metal strip punching machine to solve the above problems. Summary of the Invention

[0004] To address the technical problem that current metal strip punching machines cannot directly remove burrs during punching, this invention proposes a punching machine for metal strip processing.

[0005] This invention discloses a punching machine for metal strip processing, comprising a main frame, six support frames fixed to the bottom of the main frame by bolts, a first and second feed roller horizontally arranged fixed at one end between the inner walls of both sides of the main frame by bearings, a side bracket fixed to one end of the bottom of the main frame by bolts, a support roller fixed to the bottom between the two sides of the side bracket by bearings, a limit roller fixed to the top of the support roller between the inner walls of both sides of the side bracket by bearings, a punching mechanism disposed at the middle of the top of the main frame, a material straightening mechanism disposed at the other end of the top of the main frame, and a horizontally arranged take-up roller fixed to the other end of the inner walls of both sides of the main frame by bearings. Both support frames at the other end have roll grooves, and the same roll roller is rotatably disposed within the roll grooves of the two support frames at the other end.

[0006] Preferably, the material straightening mechanism includes a material straightening machine box fixed to the top of the main frame by bolts, two material straightening upper pressure rollers fixed to the top inner wall of the material straightening machine box by bolts, and material straightening lower pressure rollers fixed to the bottom positions of the two material straightening upper pressure rollers by bearings between the inner walls on both sides of the main frame.

[0007] Preferably, the punching mechanism includes a punching machine housing fixed to the top of the main frame by bolts. Three vertically arranged electric push rods are fixed to the top inner wall of the punching machine housing by bolts. The output shafts of the three electric push rods face the bottom, and the bottom output shafts of the three electric push rods are fixed to the same rotary drum fixing top frame by bolts. A punching top rotary drum is fixed between the two inner walls of the rotary drum fixing top frame by bearings. A punching cutter head is fixed to the outer circumference of the punching top rotary drum by bolts.

[0008] Preferably, a drive motor is bolted to one side of the top of the rotating drum fixing frame, and a drive gear is bolted to the output shaft of the drive motor. The bottom of the drive gear is embedded in the inner wall of one side of the rotating drum fixing frame but not in contact with it. A driven gear is bolted to one side of the punching top rotating drum located on the inner wall of the rotating drum fixing frame, and the driven gear coincides with the axis of the punching top rotating drum. The driven gear is meshed with the drive gear.

[0009] Preferably, the punching mechanism further includes a punching bottom rotating cylinder fixed between the inner walls of the two sides of the main frame by bearings. The outer circumference of the punching bottom rotating cylinder is provided with punching slots that match the punching cutter head. An inner rotating rod is provided between the inner walls of the two sides of the punching bottom rotating cylinder. The axis of the inner rotating rod coincides with the axis of the punching bottom rotating cylinder. A drive ring is sleeved on the outer circumference of the inner rotating rod by bearings. Five burr scrapers distributed in a circumferential array are fixed on the outer circumference of two adjacent drive rings by bolts.

[0010] Preferably, the outer circumferential wall of the burr scraper is fixed with annular groove sliders on both sides, and the inner circumferential wall of the punching bottom rotating cylinder is provided with inner annular grooves on both sides of the punching slot. The two annular groove sliders are respectively slidably engaged with the inner annular grooves on both sides. The outer circumferential wall of the inner rotating rod is fixed with a circumferentially arrayed discharge slurry plate between the two driving rings by bolts.

[0011] Preferably, a first feeding roller is fixed to one end of the punching mechanism between the two inner walls of the main frame via bearings. A support plate is fixed to the two inner walls of the main frame between the punching mechanism and the material preparation mechanism via bolts. The upper surface of the support plate is not higher than the top of the circumference of the material preparation lower pressure roller and the punching bottom rotating cylinder. Four horizontally arrayed pressure rollers are fixed to the two inner walls of the main frame between the two inner walls of the main frame at one end of the punching mechanism via bearings.

[0012] Preferably, a metal strip body is threaded between the two ends of the main frame.

[0013] Preferably, the outer circumferential wall of the receiving roller has five circumferentially arrayed receiving drum outer grooves. An inner shaft is fixed to the axis between the inner walls on both sides of the receiving roller by bolts. Five pneumatic push rod mechanisms are arranged in a circumferential array on the inner shaft. The pneumatic push rod mechanism includes a push rod groove opened on the inner circumferential wall of the inner shaft. A vertically arranged push rod is slidably engaged with the inner wall of the push rod groove. A push rod base is provided at the bottom of the push rod, and a push rod rubber head is provided at the top of the push rod.

[0014] Preferably, a magnetic base is fixed to the bottom inner wall of the push rod groove. The push rod base is made of magnetic material and attracts each other with the magnetic base. A horizontal air inlet channel is opened on the circumferential inner wall of the inner shaft at the position of the pneumatic push rod mechanism. A through air inlet slot is opened between the top and bottom of the magnetic base. The bottom of the air inlet slot is connected to the air inlet channel. The push rod base and the push rod groove are sealed and slidably arranged. The air inlet channel is set as a through structure on one side of the inner shaft. An air outlet pipe matching the air inlet channel is provided on one side inner wall of the main frame. The air outlet pipe is connected to an external air pump. The rotation of the receiving roller aligns the topmost air inlet channel with the air outlet pipe.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. In this metal strip processing punching machine, when the punching bottom drum rotates, the metal scrap generated during punching will stick together. After the punching action is completed, the drive ring rotates, causing the burr scraper that contacts the inner wall of the punching bottom drum to swing and sweep across the punching slot, thus scraping off the metal scrap generated during punching. It also scrapes off the longer burrs at the punching position of the metal strip body. As the internal rotating rod rotates, the oblique setting of the discharge paddle can recover the metal scrap to one side of the punching bottom drum, and the metal scrap can be discharged directly or manually.

[0017] 2. The punching machine for metal strip processing currently uses two close-to-each clamping rollers to hold the metal strip for discharge. This surface clamping method compresses the surface thickness of the metal strip, resulting in inconsistent overall thickness. The rotating take-up roller, located at the top, receives high-pressure airflow from one side into the air inlet slot. The thrust generated by this air pressure exceeds the attraction between the magnetic base and the push rod base, causing the push rod to extend beyond the outer wall of the take-up roller. The holes on the surface of the metal strip do not obstruct the push rod's rubber head. At this position, the push rod extends beyond the metal strip body. In areas without holes, the push rod's rubber head is blocked and does not extend beyond the metal strip body. Therefore, the metal strip is pulled out through the passage and rotation of the push rod, rather than through compression, thus effectively protecting the overall thickness of the metal strip. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a punching machine for metal strip processing proposed in this invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the test structure of a punching machine for metal strip processing proposed in this invention;

[0020] Figure 3 This is a schematic diagram of the punching mechanism of a punching machine for metal strip processing proposed in this invention;

[0021] Figure 4 This is a schematic diagram of the punching bottom drum structure of a punching machine for metal strip processing proposed in this invention;

[0022] Figure 5 This is a partial schematic diagram of the punching bottom drum structure of a punching machine for metal strip processing proposed in this invention;

[0023] Figure 6 This is a schematic diagram of the receiving drum structure of a punching machine for metal strip processing proposed in this invention;

[0024] Figure 7 This invention proposes a punching machine for metal strip processing. Figure 6 An enlarged schematic diagram of part A of the structure.

[0025] In the diagram: 1. Coiling roller; 2. Main frame; 3. Material handling machine housing; 4. Punching machine housing; 5. Pressure roller; 6. Metal strip body; 7. Upper limiting roller; 8. Side support; 9. Support roller; 10. Support frame; 11. Coiling roller slot; 12. Take-up roller; 13. Upper material handling pressure roller; 14. Punching top roller; 15. Lower material handling pressure roller; 16. Punching bottom roller; 17. First feed roller; 18. Second feed roller; 19. Drive gear; 20. 21. Drive motor; 22. Electric push rod; 23. Rotary drum fixed top frame; 24. Punching cutter head; 25. Punching slot; 26. Burr scraper; 27. Inner ring groove; 28. Ring groove slider; 29. ​​Drive ring; 30. Inner rotating rod; 31. Discharge slurry plate; 32. Outer groove of receiving rotary drum; 33. Inner shaft; 34. Air inlet channel; 35. Air inlet slot; 36. Magnetic base; 37. Push rod slide groove; 38. Push rod base; 39. Push rod rubber head. Detailed Implementation

[0026] Reference Figures 1-7A punching machine for metal strip processing includes a main frame 2. Six support frames 10 are bolted to the bottom of the main frame 2. A first feeding roller 17 and a second feeding roller 18 are horizontally arranged and fixed at one end between the inner walls of both sides of the main frame 2 via bearings. A side bracket 8 is bolted to one end of the bottom of the main frame 2. A support roller 9 is fixed to the bottom between the two sides of the side bracket 8 via bearings. A limit roller 7 is fixed to the top of the support roller 9 between the inner walls of both sides of the side bracket 8 via bearings. A punching mechanism is arranged at the middle of the top of the main frame 2. A material straightening mechanism is arranged at the other end of the top of the main frame 2. A horizontally arranged take-up roller 12 is fixed to the other end of the inner walls of both sides of the main frame 2 via bearings. The two support frames 10 at the other end are each provided with a roll groove 11. The same roll roller 1 is rotatably arranged in the roll groove 11 of the two support frames 10 at the other end.

[0027] Furthermore, the material straightening mechanism includes a material straightening machine box 3 that is bolted to the top of the main frame 2. Two material straightening upper pressure rollers 13 are bolted to the top inner wall of the material straightening machine box 3. Material straightening lower pressure rollers 15 are fixed to the bottom of the two material straightening upper pressure rollers 13 between the inner walls on both sides of the main frame 2 via bearings.

[0028] Furthermore, the punching mechanism includes a punching machine box 4 fixed to the top of the main frame 2 by bolts. Three vertically arranged electric push rods 21 are fixed to the top inner wall of the punching machine box 4 by bolts. The output shafts of the three electric push rods 21 face the bottom, and the bottom output shafts of the three electric push rods 21 are fixed to the same rotary drum fixing top frame 22 by bolts. A punching top rotary drum 14 is fixed between the inner walls of the two sides of the rotary drum fixing top frame 22 by bearings. A punching cutter head 23 is fixed to the outer circumference of the punching top rotary drum 14 by bolts.

[0029] Furthermore, a drive motor 20 is bolted to one side of the top of the rotating drum fixing top frame 22, and a drive gear 19 is bolted to the output shaft of the drive motor 20. The bottom of the drive gear 19 is embedded in the inner wall of one side of the rotating drum fixing top frame 22 but does not contact it. A driven gear is bolted to one side of the punching top rotating drum 14 located on the inner wall of the rotating drum fixing top frame 22, and the driven gear coincides with the axis of the punching top rotating drum 14. The driven gear is meshed with the drive gear 19.

[0030] Furthermore, the punching mechanism also includes a punching bottom cylinder 16 fixed between the inner walls of the two sides of the main frame 2 by bearings. The outer circumference of the punching bottom cylinder 16 is provided with punching slots 24 that match the punching cutter head 23. An inner rotating rod 29 is provided between the inner walls of the two sides of the punching bottom cylinder 16. The axis of the inner rotating rod 29 coincides with the axis of the punching bottom cylinder 16. A drive ring 28 is sleeved on the outer circumference of the inner rotating rod 29 by bearings. Five burr scrapers 25 distributed in a circular array are fixed on the outer circumference of two adjacent drive rings 28 by bolts.

[0031] Furthermore, annular groove sliders 27 are fixed on both sides of the outer circumference of the burr scraper 25, and inner annular grooves 26 are opened on both sides of the punching slot 24 on the inner circumference of the punching bottom rotating cylinder 16. The two annular groove sliders 27 are respectively slidably engaged with the inner annular grooves 26 on both sides. The outer circumference of the inner rotating rod 29 is fixed with a circumferentially arrayed discharge slurry plate 30 between the two drive rings 28 by bolts.

[0032] Furthermore, a first feeding roller 17 is fixed to one end of the punching mechanism between the two inner walls of the main frame 2 via bearings. A support plate is fixed to the two inner walls of the main frame 2 between the punching mechanism and the material preparation mechanism via bolts. The upper surface of the support plate is not higher than the top of the circumference of the material preparation lower pressure roller 15 and the punching bottom rotating cylinder 16. Four horizontally arrayed pressure rollers 5 are fixed to the two inner walls of the main frame 2 between the two inner walls of the main frame 2 at one end of the punching mechanism via bearings.

[0033] Furthermore, a metal strip body 6 is threaded between the two ends of the main frame 2;

[0034] Furthermore, the outer circumferential wall of the receiving roller 12 is provided with five circumferentially arrayed receiving roller outer groove holes 31. The axis between the inner walls on both sides of the receiving roller 12 is fixed with an inner shaft rod 32 by bolts. Five circumferentially arrayed pneumatic push rod mechanisms are provided on the circumference of the inner shaft rod 32. The pneumatic push rod mechanism includes a push rod groove 36 opened on the inner circumferential wall of the inner shaft rod 32. A vertically arranged push rod 38 is slidably engaged on the inner wall of the push rod groove 36. A push rod base 37 is provided at the bottom of the push rod 38. A push rod rubber head 39 is provided at the top of the push rod 38.

[0035] Furthermore, a magnetic base 35 is fixed to the bottom inner wall of the push rod slide 36, and the push rod base 37 is made of magnetic material and attracts each other with the magnetic base 35. The inner circumference of the inner shaft 32 is provided with a horizontal air inlet channel 33 at the position of the pneumatic push rod mechanism. A through air inlet slot 34 is provided between the top and bottom of the magnetic base 35. The bottom of the air inlet slot 34 is connected to the air inlet channel 33. The push rod base 37 and the push rod slide 36 are sealed and slidably arranged. The air inlet channel 33 is provided with a through structure on one side of the inner shaft 32, and an air outlet pipe matching the air inlet channel 33 is provided on one side inner wall of the main frame 2. The air outlet pipe is connected to an external air pump. The rotation of the receiving roller 12 makes the topmost air inlet channel 33 aligned with the air outlet pipe.

[0036] In use, the metal strip body 6 is fed through one end of the main frame 2 and passes through the punching mechanism and the shaping mechanism in sequence via the various rotating rollers. The rotating take-up roller 12 winds the punched metal strip into the winding roller 1. During the operation of the punching mechanism, the height of the top punching roller 14 is adjusted by the electric push rod 21, causing it to descend and approach the bottom punching roller 16, allowing the punching cutter head 23 to engage with the punching slot 24. Thus, the metal strip body 6 can directly undergo the extrusion punching process as it passes between the top punching roller 14 and the bottom punching roller 16. When the bottom punching roller 16 rotates, the metal scrap generated during punching will adhere together, thus preventing further impact. After the punching action is completed, the drive ring 28 rotates, causing the burr scraper 25, which is in contact with the inner wall of the punching bottom drum 16, to swing and sweep across the punching slot 24, so that the metal scrap formed by punching is scraped off, and the longer burrs at the punching position of the metal strip body 6 are also scraped off. As the internal rotating rod 29 rotates, the oblique setting of the discharge paddle 30 can recover the metal scrap to one side of the punching bottom drum 16, and the metal scrap can be discharged directly or manually. The punched metal strip body 6 continues to run into the interior of the material setter box 3. The rotation of the two material setter upper pressure rollers 13 and the bottom material setter lower pressure roller 15 inside the material setter box 3 can remove the tiny burrs on the surface of the metal strip body 6 more thoroughly.During the unloading of the metal strip after punching the 6-hole body, current equipment uses two close-to-each-adjacent clamping rollers to hold the metal strip for discharge. This surface clamping discharge method compresses the thickness of the metal strip surface, resulting in inconsistent overall thickness. When the take-up roller 12 rotates, when the air pump is not in operation, the push rod 38 inside the one-sided air inlet pipe is attracted to the magnetic base 35 due to the magnetism of the push rod base 37 at the bottom. This keeps the push rod 38 inside the push rod groove 36, and the push rod rubber head 39 does not protrude from the outer wall of the take-up roller 12. The outer wall of the take-up roller 12 runs smoothly during rotation and does not generate any driving effect. When the air pump generates high-pressure airflow to the air outlet pipe, the rotating take-up roller 12, at this time, receives the high-pressure airflow from one side into the air inlet slot 34, and the thrust generated by the air pressure is greater than that of the magnetic base. The attraction between seat 35 and push rod base 37 causes push rod 38 to extend out of the outer wall of take-up roller 12. The holes on the surface of the metal strip body 6 do not obstruct the push rod head 39. At this position, push rod 38 extends outside the metal strip body 6, while the push rod head 39 at the un-holeed positions is blocked and does not extend outside the metal strip body 6. Therefore, the metal strip is pulled out through the passage and rotation of push rod 38, rather than through compression, thus providing excellent protection for the overall thickness of the metal strip. During rotation, the air inlet duct 33 disengages from the air outlet, and the push rod groove 36 loses air pressure. Due to the magnetic attraction, push rod 38 returns to its lowest position. This take-up roller 12 can be matched with punched holes at any position on the metal strip for the discharge process, and the pulling method provides better protection for the uniform thickness of the metal strip body 6 compared to the clamping method.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A punching machine for processing metal strips, comprising a main frame (2), wherein six support frames (10) are bolted to the bottom of the main frame (2), characterized in that, The first feeding roller (17) and the second feeding roller (18) are horizontally fixed at one end of the inner wall between the two sides of the main frame (2) by bearings. The side bracket (8) is fixed at one end of the bottom of the main frame (2) by bolts. The support roller (9) is fixed at the bottom between the two sides of the side bracket (8) by bearings. The upper limit roller (7) is fixed at the top of the support roller (9) between the inner walls of the two sides of the side bracket (8) by bearings. The punching mechanism is provided at the middle of the top of the main frame (2). The material straightening mechanism is provided at the other end of the top of the main frame (2). The receiving roller (12) is horizontally fixed at the other end of the inner wall between the two sides of the main frame (2) by bearings. The two support frames (10) at the other end are both provided with roller slots (11). The same material roller (1) is rotatably arranged in the roller slots (11) of the two support frames (10) at the other end. The outer circumferential wall of the receiving roller (12) is provided with five circumferentially arrayed receiving drum outer grooves (31). The inner shaft (32) is fixed to the axis between the inner walls on both sides of the receiving roller (12) by bolts. Five circumferentially arrayed pneumatic push rod mechanisms are provided on the circumference of the inner shaft (32). The pneumatic push rod mechanism includes a push rod groove (36) opened on the inner circumferential wall of the inner shaft (32). A vertically arranged push rod (38) is slidably engaged on the inner wall of the push rod groove (36). A push rod base (37) is provided at the bottom of the push rod (38). A push rod rubber head (39) is provided at the top of the push rod (38). A magnetic base (35) is fixed on the bottom inner wall of the push rod groove (36). The push rod base (37) is set as The magnetic material attracts each other with the magnetic base (35). The inner wall of the inner shaft (32) is provided with a horizontal air inlet channel (33) at the position of the pneumatic push rod mechanism. The top and bottom of the magnetic base (35) are provided with a through air inlet slot (34). The bottom of the air inlet slot (34) is connected to the air inlet channel (33). The push rod base (37) and the push rod slide (36) are sealed and slidably arranged. The air inlet channel (33) is provided with a through structure at one side of the inner shaft (32). The inner wall of one side of the main frame (2) is provided with an air outlet pipe that matches the air inlet channel (33). The air outlet pipe is connected to an external air pump. The rotation of the receiving roller (12) makes the top air inlet channel (33) and the air outlet pipe aligned.

2. The punching machine for metal strip processing according to claim 1, characterized in that, The material straightening mechanism includes a material straightening machine box (3) fixed to the top of the main frame (2) by bolts. The top inner wall of the material straightening machine box (3) has two material straightening upper pressure rollers (13) fixed by bolts. The two inner walls on both sides of the main frame (2) are each fixed with a material straightening lower pressure roller (15) at the bottom position of the two material straightening upper pressure rollers (13) by bearings.

3. A punching machine for metal strip processing according to claim 2, characterized in that, The punching mechanism includes a punching machine box (4) fixed to the top of the main frame (2) by bolts. Three vertically arranged electric push rods (21) are fixed to the top inner wall of the punching machine box (4) by bolts. The output shafts of the three electric push rods (21) face the bottom, and the bottom output shafts of the three electric push rods (21) are fixed to the same rotating drum fixing top frame (22) by bolts. A punching top rotating drum (14) is fixed between the inner walls of the two sides of the rotating drum fixing top frame (22) by bearings. A punching cutter head (23) is fixed to the outer circumference of the punching top rotating drum (14) by bolts.

4. A punching machine for metal strip processing according to claim 3, characterized in that, A drive motor (20) is bolted to one side of the top of the rotating drum fixing bracket (22). The output shaft of the drive motor (20) is bolted to a drive gear (19). The bottom of the drive gear (19) is embedded in the inner wall of one side of the rotating drum fixing bracket (22) but not in contact with it. A driven gear is bolted to one side of the punching top rotating drum (14) located on the inner wall of the rotating drum fixing bracket (22). The driven gear coincides with the axis of the punching top rotating drum (14). The driven gear meshes with the drive gear (19).

5. A punching machine for metal strip processing according to claim 3, characterized in that, The punching mechanism also includes a punching bottom cylinder (16) fixed between the inner walls of the two sides of the main frame (2) by bearings. The outer circumference of the punching bottom cylinder (16) is provided with punching slots (24) that match the punching cutter head (23). An inner rotating rod (29) is provided between the inner walls of the two sides of the punching bottom cylinder (16). The axis of the inner rotating rod (29) coincides with the axis of the punching bottom cylinder (16). The outer circumference of the inner rotating rod (29) is sleeved with a drive ring (28) by bearings. The outer circumference of two adjacent drive rings (28) is fixed with five burr scrapers (25) arranged in a circumferential array by bolts.

6. A punching machine for metal strip processing according to claim 5, characterized in that, The outer circumferential wall of the burr scraper (25) is fixed with annular groove sliders (27) on both sides. The inner circumferential wall of the punching bottom rotating cylinder (16) is provided with inner annular grooves (26) on both sides of the punching slot (24). The two annular groove sliders (27) are respectively slidably engaged with the inner annular grooves (26) on both sides. The outer circumferential wall of the inner rotating rod (29) is fixed with a circumferentially arrayed discharge slurry plate (30) between the two driving rings (28) by bolts.

7. A punching machine for metal strip processing according to claim 1, characterized in that, The first feeding roller (17) is fixed by bearings between the inner walls of the two sides of the main frame (2) at one end of the punching mechanism. The support plate is fixed by bolts between the inner walls of the two sides of the main frame (2) at the position of the punching mechanism and the material preparation mechanism. The upper surface of the support plate is not higher than the top of the circumference of the material preparation lower pressure roller (15) and the punching bottom rotating cylinder (16). Four horizontally arrayed pressure rollers (5) are fixed by bearings between the inner walls of the two sides of the main frame (2) at one end of the punching mechanism.

8. A punching machine for metal strip processing according to claim 7, characterized in that, A metal strip body (6) is threaded between the two ends of the main frame (2).

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