Bending tool retracting assembly for metal plate machining

Abstract

The invention relates to the technical field of metal plate machining, in particular to a bending tool retracting assembly for metal plate machining, which comprises a tool fixing seat, upper transverse plates are fixedly connected to two sides of the lower end face of the tool fixing seat, and an adjusting tool is movably connected between the two upper transverse plates. A third air cylinder is fixedly connected to the position, corresponding to the adjusting cutter, of the rear end face of the cutter fixing base, the bottom output end of the third air cylinder is fixedly connected with the top of the adjusting cutter, a cutter pressing mechanism is arranged at the position, located on one side of the adjusting cutter, of the lower side of the upper transverse plate, and a fixing plate is fixedly connected to one side of the cutter fixing base. The lower side of the fixing plate is fixedly connected with a first air cylinder and a second air cylinder. According to the designed tool retracting assembly structure, the length of the pressing tool can be adaptively adjusted according to the size of the metal plate, adaptive adjustment is conducted according to the bending shape change of the edge of the metal plate in the bending process, the requirement for pressing and fixing in the bending process of the metal plate is met, and the bending efficiency and quality of the metal plate are improved.

Description

Technical Field

[0001] This invention relates to the field of metal sheet processing technology, and in particular to a bending tool retraction assembly for metal sheet processing. Background Technology

[0002] During the production and processing of metal sheets, rectangular raw material sheets of corresponding sizes need to be cut according to the customized size of the product. Then, the edges of the metal sheets are bent into different angles and shapes through a feeding mechanism and a bending mechanism. In the process of bending the edge of a metal sheet, the bending machine mechanism includes at least a pressure knife for pressing and fixing the metal edge and a bending knife for squeezing the metal edge, which work together to achieve the bending operation. In actual operation, it is necessary to bend the four sides of the metal plate. Since the four sides of the metal plate have different dimensions, and the dimensions of some edges change after bending, such as the change of the shape of the bending area, the pressing assembly composed of fifty pressing knives needs to change its length in real time. In this process, the pressing knives need to be retracted through the retraction mechanism to change the size of the pressing knives. However, the existing technology for adjusting the pressing knives is complicated and cumbersome, and cannot make rapid changes according to the needs of the metal plate bending process, which has great limitations in practical use.

[0003] To address this, a bending tool retraction assembly for metal sheet processing is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a retraction tool assembly for bending metal sheet processing. The retraction tool assembly structure designed in this application can adaptively adjust the length of the pressing tool according to the size of the metal sheet, and can also adaptively adjust to the changes in the bending shape of the metal sheet edge during the bending process, thereby meeting the pressing and fixing requirements of metal sheet bending processing, improving the bending efficiency and quality of metal sheets, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bending tool retraction assembly for metal sheet processing, comprising a tool fixing seat, upper horizontal plates fixedly connected to both sides of the lower end face of the tool fixing seat, an adjusting tool movably connected between the two upper horizontal plates, a cylinder three fixedly connected to the rear end face of the tool fixing seat corresponding to the adjusting tool, the bottom output end of the cylinder three fixedly connected to the top of the adjusting tool, a pressing mechanism provided on the lower side of the upper horizontal plate at one side of the adjusting tool, a fixing plate fixedly connected to one side of the tool fixing seat, and cylinder one and cylinder two fixedly connected to the lower side of the fixing plate respectively, with cylinder one located below cylinder two, both cylinder one and cylinder two being drivenly connected to the pressing mechanism, cylinder one driving the pressing mechanism to rise and lift the adjusting tool to both sides in conjunction with cylinder three, cylinder two driving the pressing mechanism after tool change to descend and reset the adjusting tool displacement, thereby realizing the combination of the pressing mechanism and the adjusting tool after tool change, realizing the adjustment of the common length dimension of the pressing mechanism, and meeting the edge pressing requirements of the metal sheet under the required dimensions during the metal sheet bending process.

[0006] Preferably, the pressing mechanism includes a fixed horizontal plate movably connected to the lower end face of the upper horizontal plate, and a passive pressing plate is tenon-jointed inside the fixed horizontal plate. An adjusting seat is movably connected to the lower side of the fixed horizontal plate and the passive pressing plate. The output end of the cylinder is fixedly connected to one end of the adjusting seat, and a limiting plate is fixedly connected to the end of the adjusting seat near the adjusting tool. The length of the limiting plate is the same as the length of the adjusting tool.

[0007] Preferably, an adjustment seat two is movably connected to the lower side of the adjustment seat one near the front end. A fixed side plate is movably connected to the front side of the adjustment seat one, the adjustment seat two, and the fixed horizontal plate. A self-locking lever is movably connected to the front side of the fixed side plate. A pressure knife body is movably connected to the lower side of the adjustment seat two. An ear plate is fixed to the front side of the pressure knife body at a position corresponding to the self-locking lever. The self-locking lever is rotatably connected to the ear plate. Two holes are opened on the front side of the pressure knife body, one above the other. An ejector rod is connected to the upper hole. A spring is fixed between the ejector rod and the hole. The front end of the ejector rod extends from the hole to the bottom of the self-locking lever.

[0008] Preferably, the number of the pressing body, the self-locking lever, and the ejector lever is several. The lower hole is a disassembly hole that cooperates with an external knife retraction device to disassemble and use the pressing body. The top of the self-locking lever is designed with a hook-shaped structure to engage with the front end face of the fixed side plate.

[0009] Preferably, several extrusion seats are distributed between the first adjustment seat and the second adjustment seat. Each extrusion seat has a self-made micro cylinder. The self-made micro cylinder extends and cooperates with the extrusion seat to extrude and expand the installation gap between the first adjustment seat and the second adjustment seat, thereby cooperating with the fixed side plate to support and fix the lower pressure knife body.

[0010] Preferably, the upper horizontal plate, fixed side plate, fixed horizontal plate, adjusting seat one, adjusting seat two, and pressing knife body are all connected and fixed by mortise and tenon joints. The lower end face of adjusting seat one is movably connected to a side knife on the side away from the adjusting knife. The side knife is connected to the pressing knife body and adjusting seat one in the same way. The side of the side knife is connected to the output end of cylinder one. The side knife, in conjunction with the output displacement of cylinder one, presses several pressing knife bodies towards the direction of the adjusting knife until all pressing knife bodies are in contact with each other. The pressing knife body away from the side knife is in contact with the limiting plate to realize the reset operation after the common length adjustment of the knife.

[0011] Preferably, the end of the adjusting seat away from the adjusting tool has a hole, and the interior of the adjusting seat has an air passage that is connected to the air chamber of the self-made micro cylinder, so that the input of an external air source drives the self-made micro cylinder to expand and squeeze the adjusting seat.

[0012] Preferably, a gas connector is fixedly connected to the middle of the rear side of the upper horizontal plate. A connecting branch connector connected to the gas connector is provided on the upper horizontal plate. Several air passages connected to the branch connectors are also opened in the fixed horizontal plate. A self-made miniature cylinder II is provided in the fixed horizontal plate. The air passages are connected to the air chamber of the self-made miniature cylinder II. The self-made miniature cylinder II is inflated and expanded. The output end is located at the compression passive compression plate. It expands outward through the passive compression plate and the fixed horizontal plate to compress and fix the lower adjustment seat I.

[0013] Preferably, a spring push rod is provided between adjacent self-made miniature cylinders, that is, a movable groove is opened between the adjustment seats between adjacent self-made miniature cylinders, the push rod is located in the movable groove, a spring is installed between the push rod and the movable groove, and one end of the push rod extends out of the adjustment seat and abuts against the adjustment seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The retraction assembly structure designed in this application can adaptively adjust the length of the pressing knife according to the size of the metal sheet, and can also adaptively adjust to the changes in the bending shape of the metal sheet edge during the bending process, so as to meet the pressing and fixing requirements of the metal sheet bending process and improve the bending efficiency and quality of the metal sheet. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a rear view of the overall structure of the present invention; Figure 3 This is a front view of the overall structure of the present invention; Figure 4 This is a side view of the overall structure of the present invention; Figure 5 This is a structural view of the pressing mechanism of the present invention; Figure 6 For the present invention Figure 5 Section at point BB; Figure 7 This is a side view of the pressing mechanism of the present invention; Figure 8 This is a partial cross-sectional view of the pressing mechanism of the present invention; Figure 9 This is a partial view of the pressing mechanism of the present invention; Figure 10 This is a cross-sectional view of the adjusting seat of the pressing mechanism of the present invention; Figure 11 This is an enlarged cross-sectional view of the adjusting seat of the pressing mechanism of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Tool holder; 2. Tool pressing body; 3. Tool adjusting; 4. Cylinder 1; 5. Cylinder 2; 6. Fixing plate; 7. Cylinder 3; 8. Limiting plate; 9. Self-locking lever; 10. Upper horizontal plate; 11. Fixed side plate; 12. Fixed horizontal plate; 13. Adjusting seat 1; 14. Extrusion seat; 15. Self-made miniature cylinder 1; 16. Ejector rod; 17. Ear plate; 18. Self-made miniature cylinder 2; 19. Gas connector; 20. Disassembly hole; 21. Branch connector; 22. Spring push rod; 23. Side tool; 24. Passive extrusion plate; 25. Adjusting seat 2. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 11 The present invention provides a technical solution: A bending and retraction tool assembly for processing metal sheets includes a tool holder 1. Upper horizontal plates 10 are fixedly connected to both sides of the lower end face of the tool holder 1. An adjusting tool 3 is movably connected between the two upper horizontal plates 10. A cylinder 3 7 is fixedly connected to the rear end face of the tool holder 1 at a position corresponding to the adjusting tool 3. The bottom output end of the cylinder 3 7 is fixedly connected to the top of the adjusting tool 3. A tool pressing mechanism is provided on the lower side of the upper horizontal plates 10, located on one side of the adjusting tool 3. A fixing plate 6 is fixedly connected to one side of the tool holder 1. Cylinder 4 and cylinder 5 are fixedly connected to the lower side of the fixed plate 6, with cylinder 4 located below cylinder 5. Both cylinder 4 and cylinder 5 are connected to the pressing mechanism. Cylinder 4 drives the pressing mechanism to move to both sides to cooperate with cylinder 7 to lift the adjusting tool 3. Cylinder 25 drives the pressing mechanism after tool change to move the adjusting tool 3 after it has been reset. This allows the pressing mechanism and adjusting tool 3 to be combined after tool change, and the common length dimension of the pressing mechanism to be adjusted to meet the edge pressing requirements of the metal plate under the required dimensions during the bending process.

[0020] Specifically, the pressing mechanism includes a fixed horizontal plate 12 movably connected to the lower end face of the upper horizontal plate 10, and a passive pressing plate 24 is tenon-jointed inside the fixed horizontal plate 12. An adjusting seat 13 is movably connected to the lower side of the fixed horizontal plate 12 and the passive pressing plate 24. The output end of the cylinder 2 5 is fixedly connected to one end of the adjusting seat 13, and a limiting plate 8 is fixedly connected to the end of the adjusting seat 13 near the adjusting cutter 3. The length of the limiting plate 8 is the same as the length of the adjusting cutter 3.

[0021] Specifically, an adjustment seat 25 is movably connected to the lower side of the adjustment seat 13 near its front end. A fixed side plate 11 is movably connected to the front side of the adjustment seat 13, the adjustment seat 25, and the fixed horizontal plate 12. A self-locking lever 9 is movably connected to the front side of the fixed side plate 11. A pressure knife body 2 is movably connected to the lower side of the adjustment seat 25, and an ear plate 17 is fixed to the front side of the pressure knife body 2 at a position corresponding to the self-locking lever 9. The self-locking lever 9 is rotatably connected to the ear plate 17, and the pressure... Two holes are opened on the front side of the blade body 2, one above the other. An ejector rod 16 is connected to the upper hole, and a spring is fixed between the ejector rod 16 and the hole. The front end of the ejector rod 16 extends from the hole to the bottom of the self-locking lever 9. There are several blade pressing bodies 2, self-locking levers 9 and ejector rods 16. The lower hole is a disassembly hole 20, which is used in conjunction with an external blade retraction device to disassemble the blade pressing body 2. The top of the self-locking lever 9 is designed with a hook-like structure and is locked onto the front end face of the fixed side plate 11.

[0022] Specifically, several extrusion seats 14 are distributed between the first adjustment seat 13 and the second adjustment seat 25. Each extrusion seat 14 has a self-made miniature cylinder 15 inside. The self-made miniature cylinder 15 extends and cooperates with the extrusion seat 14 to extrude and expand the installation gap between the first adjustment seat 13 and the second adjustment seat 25, thereby cooperating with the fixed side plate 11 to support and fix the lower pressure knife body 2. A spring push rod 22 is provided between adjacent self-made miniature cylinders 15. That is, a movable groove is opened between the first adjustment seat 13 between adjacent self-made miniature cylinders 15, the push rod is located in the movable groove, and a spring is installed between the push rod and the movable groove. One end of the push rod extends out of the first adjustment seat 13 and abuts against the second adjustment seat 25.

[0023] Specifically, the upper horizontal plate 10, fixed side plate 11, fixed horizontal plate 12, adjusting seat 13, adjusting seat 25, and pressing knife body 2 are all connected and fixed by tenon and mortise joints. The lower end face of the adjusting seat 13, away from the adjusting knife 3, is movably connected to the side knife 23. The side knife 23 is connected to the pressing knife body 2 and the adjusting seat 13 in the same way. The side of the side knife 23 is connected to the output end of the cylinder 4. The side knife 23 cooperates with the cylinder 4 to output displacement and press several pressing knife bodies 2 towards the adjusting knife 3 until all pressing knife bodies 2 are in contact with each other. The pressing knife body 2 away from the side knife 23 is in contact with the limiting plate 8 to realize the reset operation after the common length adjustment of the knife.

[0024] Specifically, the adjusting seat 13 has a hole at the end away from the adjusting cutter 3, and an air passage is provided inside the adjusting seat 13. The air passage is connected to the air chamber of the self-made micro cylinder 15, so that the external air source input drives the self-made micro cylinder 15 to expand and squeeze the adjusting seat 25. A gas connector 19 is fixedly connected to the middle of the rear side of the upper horizontal plate 10. A connecting branch connector 21 connected to the gas connector 19 is provided on the upper horizontal plate 10. Several air passages connected to the branch connector 21 are also provided in the fixed horizontal plate 12. The self-made micro cylinder 28 is provided in the fixed horizontal plate 12. The air passage is connected to the air chamber of the self-made micro cylinder 28. The self-made micro cylinder 28 is inflated and expanded. The output end is located at the compression passive compression plate 24. The lower adjusting seat 13 is squeezed and fixed by the expansion outward through the passive compression plate 24 and the fixed horizontal plate 12.

[0025] Working principle: During operation, the machine is equipped with an industrial camera and numerous sensor components. The system controls the operation of the external tool retraction device based on the bending dimensions of the metal plate. The tool retraction device removes or installs a new tool pressing body 2 from the tool fixing seat 1, mainly through the insertion and disassembly hole 20. During the insertion process, the tool retraction device is also equipped with a pressing block that inserts synchronously. The pressing block presses the self-locking lever 9. The bottom of the self-locking lever 9 is pressed and rotates through the connection of the ear plate 17. The top hook-shaped structure disengages from the locking area designed by the fixed side plate 11. Then, it continues to drive the tool retraction assembly to move backward. At this time, the rear side of the tool pressing body 2 disengages from the tenon-and-mortise locking point on the rear side of the adjustment seat 13. At this time, the tool pressing body 2 can be disassembled. The installation of the tool pressing body 2 is done in the opposite way. The specific operating process of the equipment in this application is as follows: Step 1: The tool holder 1 is lifted upward by the drive mechanism so that the bottom pressure body 2 does not contact the metal plate; The second step is that the blade is then moved to the sides by the second cylinder 25, which in turn moves all the bottom pressing blade bodies 2 to the sides. At this time, the adjusting blade 3 located between the two limit plates 8 is lifted upward by the third cylinder 7. The third step is to drive the side cutter 23 to move using the cylinder 4. The external tool retraction device can install a new pressure body 2 or disassemble the pressure body 2, thereby adjusting the common length of the pressure body composed of all the pressure bodies 2 to adapt to the next bending operation. Step 4: After the main body 2 of the blade is disassembled or installed, cylinder 4 moves in the reverse direction to reset. Then cylinder 5 also moves in the direction of the blade 3 to press and fit all the blades together. At this time, the adjustment is completed and the subsequent bending operation can be carried out.

[0026] In the second step of the operation, it is necessary to first "unlock" the adjusting seat 13, the fixed horizontal plate 12, and the passive pressing plate 24. Therefore, the adjusting seat 13 is fixed by the self-made miniature cylinder 18 designed between the passive pressing plate 24 and the fixed horizontal plate 12 through the extension of the pressing effect and the tenon and mortise structure. At this time, the cylinder 25 cannot drive the adjusting seat 25 to move. Therefore, the gas pipeline of the self-made miniature cylinder 18 in the control box needs to be stopped. Then, control the gas connector 19 to exhaust. At this time, the self-made miniature cylinder 18 no longer presses the passive pressing plate 24. The cylinder 25 can smoothly drive the adjusting seat 13 to move. Then, with the help of the limit plate 8, it drives the bottom whole pressing knife body 2 to move. When the second step is completed, the third step also requires "unlocking" the pressure knife body 2, the adjusting seat 13, and the adjusting seat 25. This is because the adjusting seat 13 and the adjusting seat 25 are also expanded and squeezed outward by the expansion of the self-made micro cylinder 15 to achieve expansion and compression tenon fixation of the bottom pressure knife body 2. The unlocking method is the same as above, which is to cut off the air supply to the self-made micro cylinder 15, and then reset it under the action of the spring push rod 22 to achieve unlocking. Then proceed to the fourth step.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bending tool retraction assembly for processing metal sheets, comprising a tool holder (1), characterized in that: The lower end face of the tool holder (1) is fixedly connected to both sides of an upper horizontal plate (10). An adjusting tool (3) is movably connected between the two upper horizontal plates (10). A cylinder three (7) is fixedly connected to the rear end face of the tool holder (1) at a position corresponding to the adjusting tool (3). The bottom output end of the cylinder three (7) is fixedly connected to the top of the adjusting tool (3). A pressing mechanism is provided on the lower side of the upper horizontal plate (10) at a position on one side of the adjusting tool (3). A fixing plate (6) is fixedly connected to one side of the tool holder (1), and the lower side of the fixing plate (6) is respectively fixedly connected to... There are cylinder 1 (4) and cylinder 2 (5), and cylinder 1 (4) is located below cylinder 2 (5). Both cylinder 1 (4) and cylinder 2 (5) are connected to the pressing mechanism. Cylinder 1 (4) drives the pressing mechanism to move to both sides to cooperate with cylinder 3 (7) to lift the adjusting tool (3). Cylinder 2 (5) drives the pressing mechanism after tool change to move down to reset the adjusting tool (3), so as to realize the combination of the pressing mechanism and the adjusting tool (3) after tool change, and realize the common length dimension adjustment of the pressing mechanism to meet the edge pressing requirements of the metal plate under the required size in the bending process of the metal plate.

2. The bending tool retraction assembly for processing metal sheets according to claim 1, characterized in that: The pressing mechanism includes a fixed horizontal plate (12) movably connected to the lower end face of the upper horizontal plate (10), and a passive pressing plate (24) is tenon-jointed inside the fixed horizontal plate (12). An adjusting seat (13) is movably connected to the lower side of the fixed horizontal plate (12) and the passive pressing plate (24). The output end of the cylinder (5) is fixedly connected to one end of the adjusting seat (13), and a limiting plate (8) is fixedly connected to one end of the adjusting seat (13) near the adjusting cutter (3). The length of the limiting plate (8) is the same as the length of the adjusting cutter (3).

3. The bending tool retraction assembly for processing metal sheets according to claim 2, characterized in that: Adjusting seat 1 (13) is movably connected to adjusting seat 2 (25) near the front end. Adjusting seat 1 (13), adjusting seat 2 (25), and fixed horizontal plate (12) are movably connected to fixed side plate (11). Fixed side plate (11) is movably connected to the front side of fixed side plate (11). Self-locking lever (9) is movably connected to the front side of adjusting seat 2 (25). Pressure knife body (2) is movably connected to the lower side of adjusting seat 2 (25). Ear plate (17) is fixed to the front side of pressure knife body (2) at the position corresponding to self-locking lever (9). Self-locking lever (9) is rotatably connected to ear plate (17). Pressure knife body (2) has two holes on the front side, one above the other. Ejector rod (16) is connected to the upper hole. Spring is fixed between ejector rod (16) and hole. The front end of ejector rod (16) extends from hole to the bottom of self-locking lever (9).

4. The bending tool retraction assembly for processing metal sheets according to claim 3, characterized in that: The number of the pressing body (2), the self-locking lever (9) and the ejector lever (16) is several. The lower hole is a disassembly hole (20) to cooperate with the external knife retraction device to realize the disassembly and use of the pressing body (2). The top of the self-locking lever (9) is designed with a hook-shaped structure to engage with the front end face of the fixed side plate (11).

5. The bending tool retraction assembly for processing metal sheets according to claim 4, characterized in that: Several extrusion seats (14) are distributed between the first adjustment seat (13) and the second adjustment seat (25). The extrusion seat (14) has a self-made micro cylinder (15) inside. The self-made micro cylinder (15) extends and cooperates with the extrusion seat (14) to extrude and expand the installation gap between the first adjustment seat (13) and the second adjustment seat (25) outward, thereby cooperating with the fixed side plate (11) to support and fix the lower pressure knife body (2).

6. The bending tool retraction assembly for processing metal sheets according to claim 5, characterized in that: The upper horizontal plate (10), fixed side plate (11), fixed horizontal plate (12), adjustment seat one (13), adjustment seat two (25) and pressure knife body (2) are all connected and fixed by tenon and mortise. The lower end face of the adjustment seat one (13) away from the adjustment knife (3) is movably connected to the side knife (23). The side knife (23) is connected to the pressure knife body (2) and the adjustment seat one (13) in the same way. The side of the side knife (23) is connected to the output end of the cylinder one (4). The side knife (23) cooperates with the cylinder one (4) to output displacement and squeeze several pressure knife bodies (2) towards the adjustment knife (3) until all pressure knife bodies (2) are in contact with each other. The pressure knife body (2) away from the side knife (23) is in contact with the limiting plate (8) to realize the reset operation after the common length adjustment of the knife.

7. The bending tool retraction assembly for processing metal sheets according to claim 6, characterized in that: The adjusting seat 1 (13) has a hole at the end away from the adjusting cutter (3), and an air passage is provided inside the adjusting seat 1 (13). The air passage is connected to the air chamber of the self-made micro cylinder 1 (15), so that the external air source input drives the self-made micro cylinder 1 (15) to expand and squeeze the adjusting seat 2 (25).

8. The bending tool retraction assembly for processing metal sheets according to claim 7, characterized in that: A gas connector (19) is fixedly connected to the middle of the rear side of the upper horizontal plate (10). A connecting branch connector (21) connected to the gas connector (19) is provided on the upper horizontal plate (10). Several air passages connected to the branch connector (21) are also opened in the fixed horizontal plate (12). A self-made miniature cylinder two (18) is provided in the fixed horizontal plate (12). The air passage is connected to the air chamber of the self-made miniature cylinder two (18). The self-made miniature cylinder two (18) is inflated and expanded. The output end is located on the compression passive compression plate (24). The lower adjustment seat one (13) is compressed and fixed by the expansion outward through the passive compression plate (24) and the fixed horizontal plate (12).

9. A bending tool retraction assembly for processing metal sheets according to claim 8, characterized in that: A spring push rod (22) is provided between adjacent self-made micro cylinders (15). That is, a movable groove is opened between the adjustment seat (13) between adjacent self-made micro cylinders (15), the push rod is located in the movable groove, a spring is installed between the push rod and the movable groove, and one end of the push rod goes out of the adjustment seat (13) and abuts against the adjustment seat (25).

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