Punching device and method based on metal plate production

Abstract

The invention discloses a punching device and method based on sheet metal production, and relates to the technical field of sheet metal punching. The punching device and method based on sheet metal production comprise a punching machine tool, a center console fixed to the punching machine tool, a material preparation table fixed to the side face of the punching machine tool, an upper die plate, a lower die plate and a punch, wherein the upper die plate and the lower die plate are installed on the punching machine tool and used for punching, and the punch is installed on the upper die plate and used for punching. A lubricating assembly used for increasing the roundness of a punched hole and an adjusting assembly used for changing the position of the lubricating assembly are arranged on the punching machine tool, and the lubricating assembly comprises a supporting plate fixed to the side wall of an upper die plate and used for providing supporting force for the lubricating assembly. Lubricating oil is smeared on the position, needing to be punched, of the sheet metal part before punching, friction is reduced, the service life of a die is prolonged, the punching quality is improved, and the situation that the roundness of holes is affected or materials are deformed due to uneven stress distribution during punching is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal punching, and specifically relates to a punching device and method based on sheet metal production. Background Art

[0002] Sheet metal is a comprehensive cold working process for metal sheets, including shearing, punching / cutting / combining, folding, welding, riveting, splicing, forming, etc. Its remarkable feature is that the thickness of the same part is consistent. Currently, during the punching process of sheet metal parts, a stamping machine tool is usually used. During the punching process, due to the non-uniformity of the material, the stress distribution during punching is uneven, which in turn affects the roundness of the hole or causes material deformation. Currently, in order to avoid this situation, the punching speed is usually controlled or the sheet metal part is heat-treated before punching to reduce the stress concentration of the material. However, controlling the punching speed reduces the work efficiency and there is still a large friction between the die and the sheet metal part, resulting in uneven pressure distribution and non-uniform stress distribution, which in turn affects the roundness of the hole or causes material deformation; For example, a punching device for the steel back of an automotive brake pad disclosed in the patent with the publication number CN209407203U can improve the flatness of the processing target, but only ensures that the steel back of the automotive brake pad does not move during the punching process through a slip ring, and cannot ensure the roundness of the punched hole. A hydraulic multi-head three-dimensional punching device disclosed in the patent with the publication number CN103447376A also has the problem of uneven stress distribution during punching, which in turn affects the roundness of the hole or causes material deformation; Therefore, a punching device and method based on sheet metal production are proposed. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a punching device and method based on sheet metal production, which solves the problem that during the punching process, due to the non-uniformity of the material, the stress distribution during punching is uneven, which in turn affects the roundness of the hole or causes material deformation.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A punching device based on sheet metal production includes a stamping machine tool, a central control console fixed on the stamping machine tool, a stock preparation table fixed on the side of the stamping machine tool, an upper template and a lower template installed on the stamping machine tool for punching, and a punch installed on the upper template for punching. A lubrication component for increasing the roundness of the punched hole and an adjustment component for changing the position of the lubrication component are provided on the stamping machine tool. The lubrication component includes: A support plate fixed on the side wall of the upper template to provide a supporting force for the lubrication component. A storage box is fixed on the top of the support plate. A piston plate is slidably connected in the storage box. An electric push rod is fixed on the top of the piston plate; A fixed plate, fixed on the side wall of the punching machine to provide support for the electric push rod; A material delivery pipe connected to the material storage box for delivering lubricating oil, one end of which is fixed with a coating plate; The adjustment assembly comprises a fixing ring fixed on the side wall of the material storage box, a guide rod is fixed at the bottom of the fixing ring, and a mounting shaft is fixed at the bottom of the guide rod.

[0005] Preferably, a rubber bag is fixed on the side wall of the material storage box, a downward pressure rod is fixed on the bottom of the support plate, a guide column is fixed in the lower template, a power plate is slidably passed through the guide column, a spring 1 is fixed at the bottom of the power plate, the other end of the spring 1 is fixed in the lower template, one end of the power plate is located directly below the downward pressure rod, a guide plate is fixed on the side wall of the power plate, and a mounting plate is slidably passed through the guide plate.

[0006] Preferably, a positioning plate is fixed on the side wall of the guide plate, a spring 2 is fixed on the top of the positioning plate, the other end of the spring 2 is fixed to the bottom of the mounting plate, an insertion rod is fixed on the top of the mounting plate, and one end of the insertion rod is slidably inserted into the lower template.

[0007] Preferably, a connecting rod is fixed on the side wall of the mounting plate, a pull rope is fixed on the top of the connecting rod, a toggle rod is fixed to the other end of the pull rope, the toggle rod is installed on the bottom of the support plate through a fixed axis, a limiting rod is abutted on the side wall of the toggle rod, a pawl is fixed on the top of the limiting rod, and one end of the limiting rod is slidably inserted into the support plate.

[0008] Preferably, a movable shaft is fixed to the top of the support plate through a connecting plate, a ratchet is fixed to one end of the movable shaft, a pawl is abutted on the ratchet, a push rod is fixed to the side wall of the movable shaft, a sliding rod 1 is abutted on the push rod, one end of the sliding rod 1 is slidably passed through the material storage box, a limit plate is passed through one end of the sliding rod 1, one end of the limit plate is fixed in the material storage box, a spring 3 is fixed to the side wall of the sliding rod 1, and the other end of the spring 3 is fixed to the sliding rod 2.

[0009] Preferably, a sliding rod 2 is slidably penetrated in the limiting plate, a plug is fixed at one end of the sliding rod 2, one end of the plug abuts against the material storage box, a sliding rod 3 abuts on the side wall of the sliding rod 2, one end of the sliding rod 3 slidably penetrates in the material storage box, a pressing rod abuts on the sliding rod 3, a spring 4 is fixed on the pressing rod, a positioning rod is fixed at one end of the spring 4, one end of the positioning rod is fixed on the side wall of the fixing plate, and one end of the pressing rod slidably penetrates in the positioning rod.

[0010] Preferably, a magnetic ring is fixed on the side wall of the mounting shaft. A magnet is magnetically connected to the bottom of the magnetic ring. A telescopic plate is installed at the bottom of the mounting shaft. One end of the magnet is fixed on the side wall of the telescopic plate. A spring five is fixed inside the telescopic plate. One end of the spring five is fixed with a fixed block, and the fixed block slidably penetrates through the telescopic plate.

[0011] Preferably, a material conveying pipe is fixed on the telescopic plate through a fixing sleeve. An adjusting plate is fixed on the fixing sleeve. An adjusting ring is connected to the adjusting plate through a bolt. A connecting rope is fixed to the bottom of the adjusting ring. One end of the connecting rope is fixed to the top of the coating plate.

[0012] The present invention also provides a punching method applicable to a punching device for sheet metal production, including the following steps: S1. Place the sheet metal part to be punched on the stock table, and transfer the sheet metal part lubricated by the lubricating component to the lower template. S2. Control the operation of the punching machine tool and the lubricating component through the central control console. S3. Perform punching operations on the sheet metal part through the punching machine tool, and at the same time lubricate the sheet metal part at the stock table through the lubricating component. S4. Detect the punched sheet metal part through the lubricating component located in the lower template, and adjust the oil output of the lubricating component located at the stock table. S5. When switching sheet metal parts of different models, adjust the position of the lubricating component located at the stock table through the adjusting component, and directly replace the lower template and the internal lubricating component.

[0013] Preferably, the adjustment range of the oil output of the lubricating component is between 10 - 20 ml.

[0014] The present invention provides a punching device and method for sheet metal production. Compared with the prior art, the following beneficial effects are achieved: (1) The punching device and method based on sheet metal production, by setting a stamping machine, a central control table, a material preparation table, an upper template, a punch, a lower template, a fixed plate, a material storage box, an electric push rod, a piston plate, a rubber bag, a material delivery pipe, a coating plate, and a support plate, the sheet metal parts to be punched are placed on the material preparation table, and the prepared sheet metal parts are placed in the lower template, and the stamping machine is controlled by the central control table to run a stroke, and the stamping machine drives the upper template to move downward, and the upper template drives the punch to move downward, and the punch punches the sheet metal parts to punch the required holes, and during the downward movement of the stamping machine, the coating plate synchronously moves to the sheet metal parts to be punched on the material preparation table. Apply lubricating oil or lubricating liquid to the sheet metal parts before punching to reduce friction, increase mold life and improve punching quality. Precise lubrication does not require lubrication of the entire sheet metal parts, saving lubricating oil while avoiding excessive lubricating oil, which leads to poor surface cleanliness of the sheet metal parts after punching. It also avoids the situation where the pressure on the material at different parts during the punching process is inconsistent, resulting in material deformation or irregular hole shape. It effectively improves the uneven stress distribution during punching, which in turn affects the roundness of the hole or causes material deformation.

[0015] (2) The punching device and method based on sheet metal production, by setting a lower pressure rod, a power plate, a guide column, a spring 1, a guide plate, a mounting plate, a positioning plate, a spring 2, a plug rod, a connecting rod, a pull rope, a toggle rod, a limit rod, a pawl, a ratchet, a movable shaft, a push rod, a sliding rod 1, a spring 3, a limit plate, a sliding rod 2, a plug, a sliding rod 3, a squeeze rod, a spring 4, and a positioning rod, when the support plate moves downward, the lower pressure rod will be driven to move synchronously. When the upper template and the lower template are closed, the disc produced during the punching process falls into the discharge trough and slides to the side along one end of the inclined surface of the plug rod. At this time, if the hole punched by the punch is a perfect circle, the next round of punching is continued. During hole operation, if the hole punched by the punch is not a perfect circle, after the upper template is reset upward, the lubrication component is adaptively adjusted to increase the total amount of lubricating oil or curing liquid entering the feed pipe through the feed port, so that when the stamping machine performs the next stroke, the lubricating oil or curing liquid attached to the coating plate increases, so that the surface of the sheet metal to be punched on the preparation table can be more fully lubricated; each sheet metal to be punched can be lubricated, and the lubrication degree of the next sheet metal can be adjusted according to the punching condition of the previous sheet metal, and the lubrication degree at a single hole can be accurately adjusted to improve the operation accuracy. At the same time, there is no need for electrical signal control, and it is easy to troubleshoot the fault point.

[0016] (3) The punching device and method based on sheet metal production are provided with a fixing ring, a guide rod, a mounting shaft, a magnetic ring, a magnet, a telescopic plate, a fixing block, a spring, an adjusting plate, an adjusting ring, and a connecting rope. When punching operations are required on sheet metal parts of other models, the length of the telescopic plate is adjusted and the telescopic plate is rotated so that the telescopic plate is flipped around the mounting shaft as the axis. After being adjusted to the required position, the telescopic plate is fixed at the adjusted position under the magnetic attraction between the magnet and the magnetic ring. The position and contact area of ​​the coating plate can be adjusted by adjusting the assembly according to the model of the punched sheet metal part and the size of the punched hole diameter to adapt to the punching operations of sheet metal parts of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Another perspective view of the overall structure of the present invention; Figure 3 It is the overall structure diagram of the lubrication assembly of the present invention; Figure 4 It is a cross-sectional view of the material storage box of the present invention; Figure 5 For the present invention Figure 3 The enlarged view of point A in the middle; Figure 6 For the present invention Figure 3 The enlarged view of point B in the middle; Figure 7 For the present invention Figure 4 Enlarged view of point C in the middle; Figure 8 is a cross-sectional view of the lower template of the present invention; Figure 9 It is a schematic diagram of the combined state of the guide plate of the present invention; Figure 10 It is a schematic diagram of the decomposed state of the guide plate of the present invention; Figure 11 It is a schematic diagram of the position of the toggle lever of the present invention; Figure 12 It is a schematic diagram of the disassembled state of the sliding rod 2 of the present invention; Figure 13 It is a schematic diagram of the exploded state of the extrusion rod of the present invention; Figure 14 It is a partial structural diagram of the regulating assembly of the present invention; Figure 15 It is a schematic diagram of the combined state of the regulating assembly of the present invention; Figure 16 It is a schematic diagram of the exploded state of the regulating component of the present invention.

[0018] In the figure: 1. Stamping machine tool; 11. Central control console; 12. Stock preparation table; 13. Upper template; 131. Punch head; 14. Lower template; 2. Fixed plate; 21. Stock storage box; 22. Electric push rod; 23. Piston plate; 24. Rubber bladder; 25. Feeding pipe; 26. Coating plate; 3. Support plate; 31. Lower pressure rod; 32. Power plate; 33. Guide post; 34. First spring; 35. Guide plate; 36. Mounting plate; 37. Positioning plate; 38. Second spring; 39. Insert rod; 310. Connecting rod; 311. Pulling rope; 312. Poking rod; 313. Limiting rod; 314. Pawl; 315. Ratchet wheel; 316. Movable shaft; 317. Push rod; 318. First sliding rod; 319. Third spring; 320. Limiting plate; 321. Second sliding rod; 322. Plug; 323. Third sliding rod; 324. Extrusion rod; 325. Fourth spring; 326. Positioning rod; 4. Fixed ring; 41. Guide rod; 42. Mounting shaft; 43. Magnetic ring; 44. Magnet; 45. Telescopic plate; 46. Fixed block; 47. Fifth spring; 48. Adjusting plate; 49. Adjusting ring; 410. Connecting rope. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 16 , the present invention provides the following technical solutions: Embodiment 1: A punching device based on sheet metal production, including a stamping machine tool 1, a central control console 11 fixedly installed on the stamping machine tool 1, a stock preparation table 12 fixedly installed on the side of the stamping machine tool 1, an upper template 13 and a lower template 14 detachably installed on the stamping machine tool 1 for punching, and a punch head 131 detachably installed on the upper template 13 for punching. A lubricating assembly for increasing the roundness of the punched hole is provided on the stamping machine tool 1. The lubricating assembly includes: One end of the support plate 3 is fixedly installed on the side wall of the upper template 13 to provide a supporting force for the lubricating assembly. A stock storage box 21 is fixedly installed on the top of the support plate 3. A rubber bladder 24 is fixedly installed on the side wall of the stock storage box 21. A piston plate 23 is slidably connected in the stock storage box 21. An electric push rod 22 is fixedly installed on the top of the piston plate 23; One end of the fixed plate 2 is fixedly installed on the side wall of the stamping machine tool 1 to provide a supporting force for the electric push rod 22; One end of the material conveying pipe 25 is connected to the material storage box 21 for conveying lubricating oil. A coating plate 26 is fixedly installed at one end of the material conveying pipe 25, and the coating plate 26 is made of porous material.

[0021] During use, place the sheet metal part to be punched on the stock preparation table 12, and place the prepared sheet metal part into the lower template 14. Control the punching machine 1 to run one stroke through the central control console 11. Drive the upper template 13 to move downward through the punching machine 1, and drive the punch 131 to move downward through the upper template 13. Punch the required holes in the sheet metal part through the punch 131. During the downward movement of the punching machine 1, drive the support plate 3 to move downward synchronously. The support plate 3 drives the material storage box 21 to move downward, the material storage box 21 drives the material conveying pipe 25 to move downward, and the material conveying pipe 25 drives the coating plate 26 to move downward. The support plate 3 provides a supporting force for the material storage box 21, and the fixing plate 2 provides a supporting force for the electric push rod 22. Before controlling the punching machine 1 to run one stroke through the central control console 11, first control the electric push rod 22 to move downward a small fixed distance A. Drive the piston plate 23 to move downward through the electric push rod 22, so that a small part of the lubricating oil or chemical solution stored in the material storage box 21 flows out through the material conveying pipe 25 to the coating plate 26. When the punch 131 punches the sheet metal part placed on the lower template 14, the coating plate 26 synchronously applies lubricating oil or chemical solution to the sheet metal part to be punched on the stock preparation table 12. The material storage box 21 and the piston plate 23 will separate until the material storage box 21 is reset to Figure 2 the position shown. The piston plate 23 will enter the material storage box 21 again, and then the electric push rod 22 drives the piston plate 23 to move downward a small fixed distance A again. Adjust the pressure in the material storage box 21 through the rubber bladder 24, so that the additional pressure brought by the air pressed between the lubricating oil in the material storage box 21 and the piston plate 23 drives the rubber bladder 24 to expand until the next stroke, the piston plate 23 moves out of the material storage box 21, and the rubber bladder 24 contracts again.

[0022] Embodiment 2. The technical solution of this embodiment different from that of Embodiment 1 includes: The lubrication assembly further includes: A downward pressure rod 31 is fixedly installed at the bottom of the support plate 3, a guide post 33 is fixedly installed in the lower template 14, a power plate 32 is slidably penetrated through the guide post 33, a first spring 34 is fixedly installed at the bottom of the power plate 32, and the other end of the first spring 34 is fixedly installed in the lower template 14. One end of the power plate 32 is located directly below the downward pressure rod 31; The number of guide plate 35, mounting plate 36, positioning plate 37, spring 2 38, insert rod 39, connecting rod 310, pull rope 311, toggle rod 312, limit rod 313, pawl 314, ratchet 315, movable shaft 316, push rod 317, sliding rod 1 318, spring 319, limit plate 320, sliding rod 2 321, plug 322, sliding rod 323, extrusion rod 324, spring 4 325, and positioning rod 326 are all four groups, and the connection relationship of each part in a single group is as follows: A guide plate 35 is fixedly installed on the side wall of the power plate 32, a mounting plate 36 is slidably installed on the guide plate 35, a positioning plate 37 is fixedly installed on the side wall of the guide plate 35, a spring 38 is fixedly installed on the top of the positioning plate 37, the other end of the spring 38 is fixedly installed on the bottom of the mounting plate 36, a plug rod 39 is fixedly installed on the top of the mounting plate 36, one end of the plug rod 39 is slidably installed in the lower template 14, and the end of the plug rod 39 located in the lower template 14 is inclined; A connecting rod 310 is fixedly installed on the side wall of the mounting plate 36, a pull rope 311 is fixedly installed on the top of the connecting rod 310, a toggle rod 312 is fixedly installed on the other end of the pull rope 311, the toggle rod 312 is movably installed on the fixed shaft through a bearing, one end of the fixed shaft is fixedly installed on the bottom of the support plate 3, a limit rod 313 is slidably abutted on the side wall of the toggle rod 312, a ratchet 314 is fixedly installed on the top of the limit rod 313, and one end of the limit rod 313 slides through The support plate 3 is provided in the support plate 3, and a movable shaft 316 is fixedly installed on the top of the support plate 3 through a connecting plate, and a ratchet 315 is fixedly installed on one end of the movable shaft 316, and the ratchet 315 abuts against the pawl 314. A push rod 317 is fixedly installed on the side wall of the movable shaft 316, and a sliding rod 318 abuts on the push rod 317. One end of the sliding rod 318 is slidably penetrated in the material storage box 21 and the connection is sealed. One end of the sliding rod 318 is penetrated in the limiting plate 320, and the limiting plate 320 is provided. One end of the plate 320 is fixedly installed in the material storage box 21, a spring 319 is fixedly installed on the side wall of the sliding rod 1 318, and a sliding rod 2 321 is fixedly installed on the other end of the spring 319. A sliding rod 2 321 is slidably arranged in the limit plate 320, and one end of the sliding rod 2 321 is fixed with a plug 322. One end of the plug 322 abuts against the material storage box 21 for blocking the feed port. A sliding rod 323 abuts against the side wall of the sliding rod 2 321. One end of rod three 323 is slidably inserted into the storage box 21, and the sliding rod three 323 abuts against an extrusion rod 324, and a spring four 325 is fixedly installed on the extrusion rod 324, one end of the spring four 325 is fixedly installed on the positioning rod 326, and one end of the positioning rod 326 is fixedly installed on the side wall of the fixed plate 2, and one end of the extrusion rod 324 is slidably inserted into the positioning rod 326, and one end of the extrusion rod 324 close to the sliding rod three 323 is provided with two inclined surfaces, and the two inclined surfaces are staggered.

[0023] When in use, the support plate 3 moves downward and the lower pressure rod 31 is driven to move synchronously. When the upper template 13 and the lower template 14 are closed, the lower pressure rod 31 squeezes the power plate 32 to move. Through the sliding cooperation between the power plate 32 and the guide column 33, the power plate 32 moves linearly along the guide column 33 under the action of the lower pressure rod 31. The power plate 32 drives the guide plate 35 to move, the guide plate 35 drives the positioning plate 37 to move, the positioning plate 37 drives the spring 2 38 to move, the spring 2 38 drives the mounting plate 36 to move, and the mounting plate 36 drives the insertion rod 39 to move downward, so that the insertion rod 39 moves from the lower template 14 to the discharge trough, and the discs produced during the punching process fall into the discharge trough and slide to the side along the inclined insertion rod 39; At this time, if the hole punched by the punch is a perfect circle, after the upper template 13 is reset upward, the lower pressure rod 31 no longer applies pressure to the power plate 32, and the power plate 32 is reset upward under the action of the spring 1 34, and the insertion rod 39 can also be smoothly inserted into the lower template 14 and the sheet metal after the hole is punched. The punched sheet metal is removed, and the sheet metal coated with lubricating oil or liquid on the preparation table 12 is placed on the lower template 14, and the previous operation is repeated again; If the hole punched by the punch is not a perfect circle, after the upper template 13 is reset upward, the power plate 32 is reset upward, driving the guide plate 35 to reset upward, and the guide plate 35 drives the spring 2 38 to move upward through the positioning plate 37. At this time, the insertion rod 39 cannot be smoothly inserted into the sheet metal after the hole is punched, resulting in the installation plate 36 not being able to reset upward. The installation plate 36 drives the connecting rod 310 to move synchronously, so that the connecting rod 310 is also not restored to its position. The connecting rod 310 provides a supporting force for the pull rope 311, so that the distance between the end of the pull rope 311 close to the toggle rod 312 and the end close to the connecting rod 310 becomes longer, so that as the upper template 13 is successfully reset, the support plate 3 drives the toggle rod 312 to move to the initial state, and the pull The rope 311 will be tightened, so that the pull rope 311 drives the toggle rod 312 to flip around the fixed axis, and the toggle rod 312 squeezes the limit rod 313 to move upward, and the limit rod 313 drives the pawl 314 to move upward, and the pawl 314 pushes the ratchet wheel 315 to rotate, so that the ratchet wheel 315 drives the movable shaft 316 to rotate, and the movable shaft 316 drives the push rod 317 to deflect 3°, and the push rod 317 squeezes the sliding rod 1 318 to move, and the sliding rod 1 318 moves a short distance along the limit plate 320 to the end away from the plug 322, and the spring 319 provides the sliding rod 2 321 with elastic force away from the side where the sliding rod 1 318 is located, so that the sliding rod 2 321 can drive the plug 322 to block the feed inlet of the feed pipe 25; At this time, as the storage box 21 is reset, the fixed plate 2 provides a supporting force to the positioning rod 326, and the positioning rod 326 provides a supporting force to the extrusion rod 324 while guiding it.Figure 2 After reaching the position shown, the extrusion rod 324 will first push the third sliding rod 323, causing the third sliding rod 323 to slide towards the side where the storage box 21 is located until the extrusion rod 324 completely moves below the third sliding rod 323. The third sliding rod 323 will first push the second sliding rod 321 to also move linearly along the limiting plate 320. The second sliding rod 321 drives the plug 322 to move, enabling the lubricating oil or chemical liquid in the storage box 21 to enter the material conveying pipe 25 through the feed port. The moving distance of the second sliding rod 321 is the limit amount that the third spring 319 can deform within the distance between the second sliding rod 321 and the first sliding rod 318. By adjusting the distance between the first sliding rod 318 and the second sliding rod 321, the moving distance that the third sliding rod 323 can move is increased. At this time, it just reaches the step where the central control console 11 controls the electric push rod 22 to continue moving downward a small fixed distance A. This makes the total amount of lubricating oil or chemical liquid entering the material conveying pipe 25 through the feed port during the downward movement of the piston plate 23 increase. When the stamping machine 1 performs the next stroke, the amount of lubricating oil or chemical liquid attached to the coating plate 26 increases, enabling the surface of the sheet metal parts to be punched on the stock preparation table 12 to be lubricated more fully; When the stamping machine 1 performs the next stroke, the third sliding rod 323 will push the extrusion rod 324, causing the extrusion rod 324 to move towards the side where the fourth spring 325 is located until the third sliding rod 323 is completely below the extrusion rod 324. Then, under the action of the fourth spring 325, the extrusion rod 324 resets to Figure 5 the position shown, waiting to push the third sliding rod 323 next time. By setting four groups of lubricating components, the lubricating components can adjust the lubrication conditions at the stock preparation table 12 according to the punching conditions of each hole.

[0024] Embodiment 3. The technical solution that this embodiment is different from Embodiment 2 includes: The number of adjusting components is adapted to the number of coating plates 26 in the lubricating components; The adjusting components include a fixing ring 4 fixedly installed on the side wall of the storage box 21. A guiding rod 41 is fixedly installed at the bottom of the fixing ring 4. An installation shaft 42 is fixedly installed at the bottom of the guiding rod 41. A magnetic ring 43 is fixedly installed on the side wall of the installation shaft 42. A magnet 44 is magnetically connected to the bottom of the magnetic ring 43. A telescopic plate 45 is installed at the bottom of the installation shaft 42. The telescopic plate 45 consists of two parts. One end of the magnet 44 is fixed on the side wall of one of the telescopic plates 45. A fifth spring 47 is fixedly installed inside this telescopic plate 45. One end of the fifth spring 47 is fixedly installed with a fixing block 46. One end of the fixing block 46 slides through the two telescopic plates 45; Another telescopic plate 45 is fixedly installed with a material conveying pipe 25 through a fixing sleeve. A regulating plate 48 is fixedly installed on the fixing sleeve. A regulating ring 49 is connected to the regulating plate 48 by bolts. A connecting rope 410 is fixedly installed at the bottom of the regulating ring 49. One end of the connecting rope 410 is fixedly installed at the top of the coating plate 26. The coating plate 26 is a deformable porous material, which is sponge in this embodiment.

[0025] During use, the storage box 21 provides a supporting force for the fixing ring 4, the fixing ring 4 provides a supporting force for the guide rod 41, the guide rod 41 provides a supporting force for the mounting shaft 42, the mounting shaft 42 provides a supporting force for the telescopic plate 45 and the magnetic ring 43. The magnet 44 and the magnetic ring 43 attract each other magnetically. The telescopic plate 45 provides a supporting force for the fixing sleeve, and the fixing sleeve provides a supporting force for the material conveying pipe 25 and the coating plate 26. The spring five 47 provides a downward elastic force for the fixing block 46, so that the fixing block 46 can pop out from one of the telescopic plates 45 and snap into the other telescopic plate 45, so that the telescopic plate 45 maintains a fixed length, so that the coating plate 26 is maintained at the coating position without deviation. When punching operations need to be performed on sheet metal parts of other models, the length of the telescopic plate 45 is adjusted and the telescopic plate 45 is rotated to make the telescopic plate 45 flip around the mounting shaft 42. After adjusting to the required position, it is fixed at the adjusted position under the magnetic attraction between the magnet 44 and the magnetic ring 43. The fixing sleeve provides a supporting force for the regulating plate 48, the regulating plate 48 provides a supporting force for the regulating ring 49, the regulating ring 49 provides a supporting force for the connecting rope 410, and the connecting rope 410 pulls the coating plate 26. The regulating ring 49 is fixed to the regulating plate 48 with bolts. When punching holes of different diameters are required, by fixing the regulating ring 49 at different heights on the regulating plate 48, the connecting rope 410 pulls the coating plate 26 to deform, so that the contact area between the coating plate 26 and the brake pad steel plate is reduced or increased each time. By replacing different punching heads 131, the lower template 14 and some lubrication components in the lower template 14, the punching operations for different models of sheet metal parts can be adapted.

[0026] The embodiment of the present invention also provides a punching method applicable to a punching device based on sheet metal production, including the following steps: S1. Place the sheet metal part to be punched on the stock preparation table 12, and transfer the sheet metal part lubricated by the lubrication component into the lower template 14. S2. Control the operation of the punching machine tool 1 and the lubrication component through the central control console 11. S3. Perform punching operations on the sheet metal part through the punching machine tool 1, and at the same time lubricate the sheet metal part at the stock preparation table 12 through the lubrication component. S4. Detect the sheet metal parts after punching through the lubrication assembly located inside the lower template 14, and adjust the oil output of the lubrication assembly at the stock preparation table 12. The adjustment range of the oil output of the lubrication assembly is between 10 - 20 ml. S5. When switching to sheet metal parts of different models, adjust the position of the lubrication assembly at the stock preparation table 12 through the adjustment assembly, and directly replace the lower template 14 and the internal lubrication assembly.

[0027] Meanwhile, the content not detailedly described in this specification belongs to the known prior art of those skilled in the art.

[0028] It should be noted that, in this text, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for sheet metal production, comprising a punching machine (1), a central control table (11) fixed to the punching machine (1), a material preparation table (12) fixed to the side of the punching machine (1), an upper template (13) and a lower template (14) installed on the punching machine (1) for punching, and a punch (131) installed on the upper template (13) for punching, characterized in that: The punching machine (1) is provided with a lubrication component for increasing the roundness of punching holes and an adjustment component for changing the position of the lubrication component, wherein the lubrication component comprises: A support plate (3) is fixed on the side wall of the upper mold plate (13) to provide support force for the lubrication assembly, wherein a material storage box (21) is fixed on the top of the support plate (3), a piston plate (23) is slidably connected inside the material storage box (21), and an electric push rod (22) is fixed on the top of the piston plate (23); A fixed plate (2) fixed to a side wall of the punching machine (1) and used to provide support force for the electric push rod (22); A material delivery pipe (25) connected to the material storage box (21) for delivering lubricating oil, wherein a coating plate (26) is fixed to one end of the material delivery pipe (25); The adjustment assembly comprises a fixing ring (4) fixed on the side wall of the material storage box (21), a guide rod (41) is fixed at the bottom of the fixing ring (4), and a mounting shaft (42) is fixed at the bottom of the guide rod (41).

2. A punching device based on sheet metal production according to claim 1, characterized in that: A rubber bag (24) is fixed on the side wall of the material storage box (21), a pressing rod (31) is fixed on the bottom of the support plate (3), a guide column (33) is fixed in the lower template (14), a power plate (32) is slidably penetrated on the guide column (33), a spring (34) is fixed on the bottom of the power plate (32), the other end of the spring (34) is fixed in the lower template (14), one end of the power plate (32) is located directly below the pressing rod (31), a guide plate (35) is fixed on the side wall of the power plate (32), and a mounting plate (36) is slidably penetrated on the guide plate (35).

3. A punching device based on sheet metal production according to claim 2, characterized in that: A positioning plate (37) is fixed on the side wall of the guide plate (35), a second spring (38) is fixed on the top of the positioning plate (37), the other end of the second spring (38) is fixed to the bottom of the mounting plate (36), an insertion rod (39) is fixed on the top of the mounting plate (36), and one end of the insertion rod (39) is slidably inserted into the lower template (14).

4. A punching device based on sheet metal production according to claim 3, characterized in that: A connecting rod (310) is fixed on the side wall of the mounting plate (36); a pull rope (311) is fixed on the top of the connecting rod (310); a toggle rod (312) is fixed on the other end of the pull rope (311); the toggle rod (312) is mounted on the bottom of the support plate (3) via a fixed shaft; a limiting rod (313) is abutted on the side wall of the toggle rod (312); a ratchet (314) is fixed on the top of the limiting rod (313); and one end of the limiting rod (313) is slidably inserted into the support plate (3).

5. The punching device based on sheet metal production according to claim 1, characterized in that: A movable shaft (316) is fixed to the top of the support plate (3) via a connecting plate, a ratchet (315) is fixed to one end of the movable shaft (316), a ratchet (314) is abutted against the ratchet (315), a push rod (317) is fixed to the side wall of the movable shaft (316), a sliding rod (318) is abutted against the push rod (317), one end of the sliding rod (318) is slidably inserted into the material storage box (21), a limiting plate (320) is inserted into one end of the sliding rod (318), one end of the limiting plate (320) is fixed in the material storage box (21), a spring (319) is fixed to the side wall of the sliding rod (318), and a sliding rod (321) is fixed to the other end of the spring (319).

6. A punching device based on sheet metal production according to claim 5, characterized in that: A second sliding rod (321) is slidably inserted into the limiting plate (320), a plug (322) is fixed to one end of the second sliding rod (321), one end of the plug (322) is abutted against the material storage box (21), a third sliding rod (323) is abutted against the side wall of the second sliding rod (321), one end of the third sliding rod (323) is slidably inserted into the material storage box (21), a pressing rod (324) is abutted against the third sliding rod (323), a spring fourth (325) is fixed to the pressing rod (324), a positioning rod (326) is fixed to one end of the spring fourth (325), one end of the positioning rod (326) is fixed to the side wall of the fixing plate (2), and one end of the pressing rod (324) is slidably inserted into the positioning rod (326).

7. The punching device based on sheet metal production according to claim 1, characterized in that: A magnetic ring (43) is fixed on the side wall of the installation shaft (42); a magnet (44) is magnetically connected to the bottom of the magnetic ring (43); a telescopic plate (45) is installed at the bottom of the installation shaft (42); one end of the magnet (44) is fixed to the side wall of the telescopic plate (45); a spring five (47) is fixed inside the telescopic plate (45); a fixing block (46) is fixed to one end of the spring five (47); and the fixing block (46) is slidably arranged inside the telescopic plate (45).

8. The punching device based on sheet metal production according to claim 7, characterized in that: A material conveying pipe (25) is fixed to the telescopic plate (45) via a fixing sleeve, an adjusting plate (48) is fixed to the fixing sleeve, an adjusting ring (49) is connected to the adjusting plate (48) via bolts, a connecting rope (410) is fixed to the bottom of the adjusting ring (49), and one end of the connecting rope (410) is fixed to the top of the coating plate (26).

9. A punching method for a punching device based on sheet metal production according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, placing the sheet metal part to be punched on the material preparation table (12), and transferring the sheet metal part lubricated by the lubrication assembly to the lower template (14); S2, controlling the operation of the stamping machine (1) and the lubrication component through the central control console (11); S3, punching the sheet metal part by means of a punching machine (1), and lubricating the sheet metal part on the material preparation table (12) by means of a lubrication component; S4, inspecting the punched sheet metal part through the lubrication component located in the lower template (14), and adjusting the oil output of the lubrication component located at the material preparation table (12); S5. When switching to a sheet metal part of a different model, the position of the lubrication component located at the material preparation table (12) is adjusted by adjusting the component, and the lower template (14) and the internal lubrication component are directly replaced.

10. A punching method based on a punching device for sheet metal production according to claim 9, characterized in that: The oil output of the lubrication component can be adjusted within a range of 10-20 ml.

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