A multifunctional semi-automatic hemming device controlled by PLC

Abstract

The present invention relates to the technical field of metal sheet hemming processing, and specifically to a multifunctional semi-automatic hemming device controlled by a PLC, comprising a base, a fixed platform is rotatably installed on the upper end of the base, a hemming wheel is arranged on the right side of the fixed platform, a linear motor is rotatably installed on the upper end of the hemming wheel, a bracket is arranged on the outer side of the linear motor, and a lower end of the bracket is fixedly installed on the base. In the present invention, as the driving plate drives the suction cup rod to continue to descend, the suction cup rod is stopped until it is tightly adsorbed and fitted on the surface of the metal plate, and the rotation of the screw rod is stopped. The provided suction cup rod is conducive to fixing both sides of the metal plate, thereby avoiding the situation that when the subsequent hemming wheel hems the metal plate fixed by the pressing plate, the metal plate is subjected to excessive pressure from the hemming wheel due to the single fixing method of the pressing plate, causing the metal plate to deviate, thereby ensuring that the metal plate is firmly fixed and will not deviate, thereby ensuring the hemming quality of the metal plate.

Description

Technical Field

[0001] The invention relates to the technical field of metal plate hemming processing, and in particular to a multifunctional semi-automatic hemming device controlled by a PLC. Background Art

[0002] Metalworking, also known as metalworking, refers to the production activities of humans processing materials with metal characteristics that are composed of metal elements or mainly metal elements. It is a process technology that processes metal materials into objects, parts, and components, including large parts of bridges and ships, as well as tiny components of engines, jewelry, and watches. It is widely used in different fields such as science, industry, art, and handicrafts.

[0003] After searching, the patent with application number CN201920121189.8 discloses a "hydraulic rolling machine for metal processing", which includes a workbench, and brackets are provided at both ends of the top outer wall of the workbench, and the top outer walls of the two brackets are provided with electric guide rails.

[0004] However, the above-mentioned rolling machine has the following disadvantages during use: 1. The fixing method of the metal sheet is single, and the angle of the metal sheet cannot be adjusted according to actual needs, and the curling curvature of the metal sheet cannot be adjusted, which causes inconvenience in use; 2. Although the electromagnet and the push plate are provided to effectively fix the metal sheet and prevent the sheet from sliding during rolling, thus affecting the quality of rolling, in the on-site working environment, foreign debris is easily adhered to the metal sheet, and there is a gap between the push plates when fixing and clamping the metal sheet, resulting in the metal sheet being unable to completely fit with the push plates, resulting in the clamping not being firm and stable enough, thus affecting the subsequent rolling quality. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art that 1. the metal sheet is fixed in a single way, and the angle of the metal sheet cannot be adjusted according to actual needs, and the curling curvature of the metal sheet cannot be adjusted, causing inconvenience in use; 2. although an electromagnet and a push plate are provided to effectively fix the metal sheet and prevent the sheet from sliding during hemming, thereby affecting the quality of hemming, in the on-site working environment, foreign debris is easily adhered to the metal sheet, and there is a gap between the push plates when the metal sheet is fixedly clamped, resulting in the metal sheet being unable to completely fit with the push plates, resulting in the clamping being not firm and stable enough, thereby affecting the subsequent hemming quality. A multifunctional semi-automatic hemming device controlled by PLC is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A multifunctional semi-automatic hemming device controlled by a PLC comprises a base, a fixed platform is rotatably mounted on the upper end of the base, a hemming wheel is arranged on the right side of the fixed platform, a linear motor is rotatably mounted on the upper end of the hemming wheel, a bracket is arranged on the outer side of the linear motor, and a lower end of the bracket is fixedly mounted on the base;

[0008] A fixing mechanism for fixing the metal plate on the fixing table is also provided, the fixing mechanism includes a pressing plate arranged on the upper side of the fixing table, a connecting rod 1 is fixedly installed on the upper end of the pressing plate, a driving plate is slidably installed through the upper end of the connecting rod 1, a spring 1 is sleeved on the outer side of the connecting rod 1, and the upper and lower ends of the spring 1 are respectively fixedly connected to the driving plate and the pressing plate, a fixing frame is slidably installed on the left end of the driving plate, the lower end of the fixing frame is fixedly installed on the fixing table, a screw is rotatably installed on the upper end of the driving plate, and the upper side of the screw is threadedly installed on the fixing frame;

[0009] An adjusting mechanism for adjusting the metal plate hemming angle is also provided, the adjusting mechanism comprising a worm wheel fixedly mounted on the front end of the fixed platform, a worm is meshed at the lower end of the worm wheel, and the left end of the worm is rotatably mounted on the base platform.

[0010] Preferably, a scraper is abutted against the right end of the pressure plate, a connecting plate is fixedly installed on the upper end of the scraper, and a second connecting rod is slidably installed through the left side of the connecting plate.

[0011] Preferably, the lower end of the second connecting rod is fixedly mounted on the pressure plate, a second spring is sleeved on the outer side of the second connecting rod, the upper and lower ends of the second spring are respectively fixedly connected to the second connecting rod and the connecting plate, an airbag is fixedly mounted on the upper end of the connecting plate, the upper end of the airbag is fixedly connected to the second connecting rod, and the right end of the airbag is fixedly connected to a cleaning nozzle.

[0012] Preferably, support sliders are slidably installed on the upper end of the fixed platform symmetrically in front and back, and sliding grooves are opened on the upper end of the fixed platform corresponding to the support sliders, and drag blocks are provided on the upper sides of the support sliders.

[0013] Preferably, the upper end of the drag block is fixedly installed with a connecting rod three, and a sliding plate is slidably installed on the upper end of the connecting rod three. A spring three is sleeved on the outer side of the connecting rod three. The upper and lower ends of the spring three are respectively fixedly connected to the sliding plate and the drag block, and the ends of the sliding plates close to each other are slidably connected to the pressure plate.

[0014] Preferably, an inclined block is provided at the upper end of the sliding plate to abut against and fit against the upper end, and the inclined block is fixedly connected to the front and rear ends of the driving plate respectively.

[0015] Preferably, a limiting block 1 is fixedly installed on the left side of the upper end of the supporting sliding block, and a limiting block 2 is provided on the left side of the limiting block 1 at the upper end of the fixed platform.

[0016] Preferably, suction cup rods are fixedly mounted on both the front and rear ends of the driving plate, sweep strips are provided on the lower sides of the suction cup rods, and a gear shaft is fixedly mounted on the middle of the sweep strips.

[0017] Preferably, the left end of the gear shaft is meshed with a rack plate, the lower end of the rack plate is fixedly mounted on the pressure plate, the upper end of the gear shaft is rotatably mounted with a magnetic plate, the left end of the magnetic plate is slidably mounted with a bracket two, the lower end of the bracket two is fixedly mounted on the pressure plate, and magnetic blocks are fixedly mounted corresponding to the magnetic plates at the front and rear ends of the drive plate.

[0018] Preferably, a water spray pipe is provided on the right side of the suction cup rod, the right end of the water spray pipe is fixedly connected to a micro water pump, the right end of the micro water pump is fixedly connected to a water tank, and the lower end of the water tank is fixedly installed on the pressure plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, a metal plate to be rolled is placed on a fixed table so that the left end of the metal plate is kept in contact with the limit block 1, and the screw rod is rotated to drive the driving plate to slide and descend, and the driving plate drives the connecting rod 1, the spring 1 and the pressure plate to descend synchronously, and the pressure plate drives the sliding plate, the connecting rod 3, the drag block and the spring 3 to descend synchronously, and the pressure plate also drives the connecting rod 2, the connecting plate, the spring 2 and the scraper to descend synchronously, and the lower ends of the scraper and the drag block are lower than the lower end of the pressure plate, and the lower end of the drag block is also lower than the lower end of the scraper, so the drag block will first contact the upper surface of the metal plate, and as the driving plate and the pressure plate continue to descend, the diameter of the spring 1 is larger than that of the spring 3 and the spring 2, so the spring 3 will be compressed first, and the drag block drives the connecting rod 2, the connecting plate, the spring 2 and the scraper to descend synchronously. Rod three slides on the sliding plate, and the drag block gradually and tightly clamps the metal plate and fixes it on the supporting slider. At this time, the lower end of the scraper blade will gradually fit the upper surface of the metal plate. As the pressure plate continues to descend, the scraper blade and the connecting plate will slide upward on the connecting rod two, compressing the spring two. As the spring three is gradually compressed and the driving plate continues to descend, the spring one will be squeezed to make the driving plate slide and descend on the connecting rod one. When the driving plate descends, the inclined block will also be driven to descend synchronously. The inclined block squeezes the sliding plate on the lower side, forcing the sliding plate to slide to the left on the pressure plate. The sliding plate will also drive the connecting rod three, the drag block and the spring three to slide to the left synchronously. Since the drag block and the supporting slider have already held the metal plate The metal plate is tightly fixed, and when the drag block slides to the left, it will drive the metal plate and the supporting slider to slide to the left synchronously. A number of ball bearings can be set between the supporting slider and the fixed platform to reduce friction and make the metal plate slide to the left more smoothly. When the metal plate slides to the left, the lower end of the scraper has been tightly fitted with the upper surface of the metal plate, and the scraper can be used to scrape off the impurities and debris on the upper surface of the metal plate in advance. The impurities and debris on the lower surface of the metal plate will be scraped off by the right end corner of the fixed platform, thereby ensuring the cleanliness of the upper and lower surfaces of the metal plate. The scraped and cleaned metal plate area will stop between the right side of the pressure plate and the fixed platform, avoiding the adhesion of impurities and debris on the surface of the metal plate, which will cause the pressure plate to subsequently press the metal. When the plate is fixed, impurities and debris will cause a gap between the metal plate and the pressure plate and the fixing table, resulting in insufficient fixation, which will cause the metal plate to deviate during the subsequent metal plate rolling. To ensure the subsequent rolling quality of the metal plate, the continued leftward movement of the drag block and the supporting slider will gradually separate the metal plate from between the drag block and the supporting slider. After separation, the lower end of the pressure plate will tightly press and fix the metal plate on the fixing table under the action of spring 1, completing the fixing of the metal plate. The whole process reduces the situation of manual dragging of the metal plate, saves manual labor, and improves the fixing efficiency of the metal plate. The two processes of fixing and removing can be completed in a unified manner, thereby improving work efficiency.

[0021] 2. In the present invention, the connecting plate and the second connecting rod will squeeze the airbag, so that the gas inside the airbag is ejected from the cleaning nozzle, which is beneficial to the subsequent removal of impurities and debris by the scraper blade, thereby ensuring the scraping quality of the subsequent scraper blade.

[0022] 3. In the present invention, when the inclined block squeezes the sliding plate, the connecting rod three, the drag block, the metal plate and the supporting slider to move to the left, the left end of the metal plate will be blocked by the limit block two and stop moving, which is beneficial to the automatic alignment of the metal plate.

[0023] 4. In the present invention, when the pressing plate fixes the metal plate on the fixed platform, since the lower end of the sweeping strip and the lower end of the pressing plate are located on the same horizontal line, the lower end of the sweeping strip will also fit on the metal plate. When the driving plate continues to descend, it will drive the suction cup rod and the magnetic block to descend synchronously. When the magnetic block descends to the side close to the magnetic plate, it will generate a magnetic repulsive force on the magnetic plate, pushing the magnetic plate to slide on the bracket 2 in a direction away from each other. The magnetic plate will also drive the gear shaft and the sweeping strip to move synchronously. The gear shaft will rotate under the meshing action of the rack plate, and then drive the sweeping strip to rotate. The arranged sweeping strip is convenient for removing impurities from the surface of the metal plate located on the lower side of the suction cup rod (the sweeping strip will quickly pass through the surface of the metal plate on the lower side of the suction cup rod before the suction cup rod descends and fits the surface of the metal plate, and will not cause motion interference). The rotating sweeping strip will improve the cleaning quality of impurities, ensure that the subsequent suction cup rod can be tightly adsorbed and fixed on the surface of the metal plate, and ensure the subsequent fixing quality of the suction cup rod.

[0024] 5. In the present invention, when the suction cup rod does not contact the surface of the metal plate, the built-in PLC controller starts the micro water pump to spray the water in the water tank through the water spray pipe and spray it on the surface area of ​​the metal plate on the lower side of the suction cup rod, thereby ensuring the firmness of the subsequent suction cup rod.

[0025] 6. In the present invention, as the driving plate drives the suction cup rod to continue to descend, the screw rod is stopped until the suction cup rod is tightly adsorbed and fits on the surface of the metal plate. The provided suction cup rod is conducive to fixing both sides of the metal plate, thereby avoiding the situation in which the metal plate is subjected to excessive pressure from the rolling wheel when the metal plate fixed by the pressing plate is rolled. Since the metal plate is only fixed by the pressing plate, the metal plate is subjected to excessive pressure from the rolling wheel, causing the metal plate to deviate. This ensures that the metal plate is firmly fixed and will not deviate, thereby ensuring the rolling quality of the metal plate.

[0026] 7. In the present invention, the rotating worm drives the worm wheel and the fixed platform to rotate on the base platform, which is conducive to adjusting the hemming angle and curvature of the metal plate according to actual needs and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall front left three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall front right three-dimensional structure of the present invention;

[0029] Figure 3 For the present invention Figure 1 The structural diagram at A in the middle;

[0030] Figure 4 For the present invention Figure 1 The structural diagram at B in the middle;

[0031] Figure 5 For the present invention Figure 1 Schematic diagram of the structure at C in the middle;

[0032] Figure 6 For the present invention Figure 1 The structural diagram at D in the middle;

[0033] Figure 7 For the present invention Figure 1 Schematic diagram of the structure at E in the middle;

[0034] In the figure: 1. Base; 2. Fixed platform; 3. Rolling wheel; 4. Linear motor; 5. Bracket 1;

[0035] Fixing mechanism: 6, pressing plate; 7, connecting rod 1; 8, driving plate; 9, spring 1; 10, fixing frame; 11, screw; 12, scraper; 13, connecting plate; 14, connecting rod 2; 15, spring 2; 16, supporting slider; 17, drag block; 18, connecting rod 3; 19, sliding plate; 20, spring 3; 21, oblique block; 22, limit block 1; 23, limit block 2; 24, suction cup rod; 25, sweeping strip; 26, gear shaft; 27, rack plate; 28, magnetic plate; 29, bracket 2; 30, magnetic block; 31, water spray pipe; 32, water tank; 33, micro water pump; 34, cleaning nozzle; 35, air bag;

[0036] Adjusting mechanism: 36, worm wheel; 37, worm. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Reference Figure 1-Figure 7A multifunctional semi-automatic hemming device controlled by a PLC comprises a base 1, a fixed table 2 is rotatably mounted on the upper end of the base 1, a hemming wheel 3 is arranged on the right side of the fixed table 2, a linear motor 4 is rotatably mounted on the upper end of the hemming wheel 3, a bracket 5 is arranged on the outer side of the linear motor 4, and the lower end of the bracket 5 is fixedly mounted on the base 1; a fixing mechanism for fixing a metal plate on the fixed table 2 is also provided, and the fixing mechanism comprises a pressing plate 6 arranged on the upper side of the fixed table 2, a connecting rod 7 is fixedly mounted on the upper end of the pressing plate 6, a driving plate 8 is slidably mounted through the upper end of the connecting rod 7, a spring 9 is sleeved on the outer side of the connecting rod 7, and the upper and lower ends of the spring 9 are fixedly connected to the driving plate 8 and the pressing plate 6 respectively, a fixing frame 10 is slidably mounted on the left end of the driving plate 8, and the fixing frame 10 The lower end is fixedly mounted on the fixed platform 2, and a screw rod 11 is rotatably mounted on the upper end of the driving plate 8. The upper side of the screw rod 11 is threadedly mounted on the fixed frame 10. The right end of the pressing plate 6 is abutted and fitted with a scraper 12, and a connecting plate 13 is fixedly mounted on the upper end of the scraper 12. A second connecting rod 14 is slidably mounted on the left side of the connecting plate 13. The lower end of the second connecting rod 14 is fixedly mounted on the pressing plate 6, and a second spring 15 is sleeved on the outer side of the second connecting rod 14. The upper and lower ends of the second spring 15 are respectively fixedly connected to the second connecting rod 14 and the connecting plate 13. An airbag 35 is fixedly mounted on the upper end of the connecting plate 13. The upper end of the airbag 35 is fixedly connected to the second connecting rod 14, and the right end of the airbag 35 is fixedly connected to a cleaning nozzle 34. The upper end of the fixed platform 2 is symmetrically slidably mounted with a supporting slider 16, and the upper end of the fixed platform 2 is provided with a slide groove corresponding to the supporting slider 16, and the upper side of the supporting slider 16 is provided with a drag block 17, and the upper end of the drag block 17 is fixedly installed with a connecting rod 3 18, and the upper end of the connecting rod 3 18 is penetrated and slidably installed with a sliding plate 19, and the outer side of the connecting rod 3 18 is sleeved with a spring 3 20, and the upper and lower ends of the spring 3 20 are respectively fixedly connected with the sliding plate 19 and the drag block 17, and the ends of the sliding plates 19 close to each other are slidably connected with the pressure plate 6, and the upper end of the sliding plate 19 is abutted and fitted with an inclined block 21, and the inclined block 21 is respectively fixedly connected with the front and rear ends of the driving plate 8, The left side of the upper end of the supporting slider 16 is fixedly installed with a limit block 1 22, and the upper end of the fixed platform 2 is located on the left side of the limit block 1 22. A limit block 23 is provided on the left side of the limit block 1 22. Suction cup rods 24 are fixedly installed at both front and rear ends of the driving plate 8, and sweep strips 25 are provided on the lower side of the suction cup rods 24. A gear shaft 26 is fixedly installed on the middle part of the sweep strip 25. The left end of the gear shaft 26 is meshed with a rack plate 27, and the lower end of the rack plate 27 is fixedly installed on the pressing plate 6. A magnetic plate 28 is rotatably installed on the upper end of the gear shaft 26, and a bracket 29 is slidably installed on the left end of the magnetic plate 28. The lower end of the bracket 29 is fixedly installed on the pressing plate 6, and a magnetic block 30 is fixedly installed at the front and rear ends of the driving plate 8 corresponding to the magnetic plate 28. A water spray pipe 31 is provided on the right side of the suction cup rod 24, and a micro water pump 33 is fixedly connected at the right end of the water spray pipe 31. A water tank 32 is fixedly connected at the right end of the micro water pump 33, and the lower end of the water tank 32 is fixedly installed on the pressing plate 6;

[0040] During operation, the metal plate to be rolled is placed on the fixed platform 2 so that the left end of the metal plate is kept in contact with the limit block 1 22, and the screw 11 is rotated to drive the driving plate 8 to slide and descend, and the driving plate 8 drives the connecting rod 1 7, the spring 1 9 and the pressure plate 6 to descend synchronously, and the pressure plate 6 drives the sliding plate 19, the connecting rod 3 18, the drag block 17 and the spring 3 20 to descend synchronously, and the pressure plate 6 will also drive the connecting rod 2 14, the connecting plate 13, the spring 2 15 and the scraper 12 to descend synchronously, and the lower ends of the scraper 12 and the drag block 17 are lower than the lower end of the pressure plate 6, and the lower end of the drag block 17 is also lower than the lower end of the scraper 12, so the drag block 17 will first contact the upper surface of the metal plate, and as the driving plate 8 and the pressure plate 6 continue to descend, the diameter of the spring 1 9 is larger than the spring 3 20 and the spring 2 15, so the spring The third 20 will be compressed first, and the drag block 17 drives the connecting rod 3 18 to slide on the sliding plate 19. The drag block 17 gradually and tightly clamps the metal plate and fixes it on the supporting slider 16. At this time, the lower end of the scraper 12 will gradually fit the upper surface of the metal plate. As the pressure plate 6 continues to descend, the scraper 12 and the connecting plate 13 will slide upward on the connecting rod 2 14, compressing the spring 2 15. At the same time, the connecting plate 13 and the connecting rod 2 14 will squeeze the airbag 35, so that the gas inside the airbag 35 will be ejected from the cleaning nozzle 34, which is conducive to the subsequent scraping of impurities and debris by the scraper 12, thereby ensuring the scraping quality of the subsequent scraper 12. As the spring 3 20 is gradually compressed and the driving plate 8 continues to descend, the spring 1 9 will be squeezed, so that the driving plate 8 When the driving plate 8 slides down on the connecting rod 1 7 and descends, the inclined block 21 will also be driven to descend synchronously. The inclined block 21 squeezes the sliding plate 19 on the lower side, forcing the sliding plate 19 to slide to the left on the pressure plate 6. The sliding plate 19 will also drive the connecting rod 3 18, the drag block 17 and the spring 3 20 to slide to the left synchronously. Since the drag block 17 and the supporting slider 16 have already tightly fixed the metal plate, the sliding of the drag block 17 to the left will drive the metal plate and the supporting slider 16 to slide to the left synchronously. A number of balls can be arranged between the supporting slider 16 and the fixed platform 2 to reduce friction and make the metal plate slide to the left more smoothly. When the metal plate slides to the left, the lower end of the scraper 12 is already in close contact with the upper surface of the metal plate, and the scraper 12 can be used to remove impurities on the upper surface of the metal plate in advance. The scraped debris will be scraped off, and the impurities and debris on the lower surface of the metal plate will be scraped off by the right end corner of the fixed platform 2, so as to ensure the cleanliness of the upper and lower surfaces of the metal plate. The scraped and cleaned metal plate area will stop between the right side of the pressure plate 6 and the fixed platform 2, avoiding the adhesion of impurities and debris on the surface of the metal plate. As a result, when the pressure plate 6 fixes the metal plate later, the impurities and debris will cause a gap between the metal plate and the pressure plate 6 and the fixed platform 2, resulting in insufficient fixation, causing the metal plate to deviate during the subsequent metal plate hemming, thereby ensuring the subsequent hemming quality of the metal plate. When the inclined block 21 squeezes the sliding plate 19, the connecting rod three 18, the drag block 17, the metal plate and the supporting slider 16 to move to the left, the left end of the metal plate will be blocked by the limit block two 23 and stop moving, which is conducive to the automatic alignment of the metal plate.At this time, the drag block 17 and the support slider 16 continue to move left, which will gradually separate the metal plate from between the drag block 17 and the support slider 16. After separation, the lower end of the pressing plate 6 will tightly press and fix the metal plate on the fixed platform 2 under the action of the spring 9, completing the fixing of the metal plate. The whole process reduces the situation of manually dragging the metal plate, saving manual labor and improving the fixing efficiency of the metal plate. When the pressing plate 6 fixes the metal plate on the fixed platform 2, since the lower end of the sweeping strip 25 is on the same horizontal line as the lower end of the pressing plate 6, the lower end of the sweeping strip 25 will also fit on the metal plate. When the driving plate 8 continues to When descending, the suction cup rod 24 and the magnetic block 30 will be driven to descend synchronously. When the magnetic block 30 descends to the side close to the magnetic plate 28, it will generate a magnetic repulsive force on the magnetic plate 28, pushing the magnetic plate 28 to slide on the bracket 29 in a direction away from each other. The magnetic plate 28 will also drive the gear shaft 26 and the sweep bar 25 to move synchronously. Under the meshing action of the rack plate 27, the gear shaft 26 will rotate, thereby driving the sweep bar 25 to rotate. The sweep bar 25 is arranged to facilitate the removal of impurities from the surface of the metal plate located on the lower side of the suction cup rod 24 (the sweep bar 25 will quickly pass through the suction cup rod 24 before the suction cup rod 24 descends and fits the surface of the metal plate). The surface of the metal plate on the lower side will not produce motion interference), the rotating sweeping bar 25 will improve the cleaning quality of impurities, ensure that the subsequent suction cup rod 24 can be tightly adsorbed and fixed on the surface of the metal plate, ensure the subsequent fixing quality of the suction cup rod 24, at the same time, while the suction cup rod 24 is not in contact with the surface of the metal plate, the built-in PLC controller starts the micro water pump 33 to spray the water in the water tank 32 through the water spray pipe 31, and sprays it on the surface area of ​​the metal plate on the lower side of the suction cup rod 24, ensuring the firmness of the subsequent suction cup rod 24, as the driving plate 8 drives the suction cup rod 24 to continue to descend, until the suction cup rod 24 is tightly fixed. After being tightly adsorbed and attached to the surface of the metal plate, the screw 11 stops rotating, and the suction cup rod 24 is arranged to fix both sides of the metal plate, thereby avoiding the situation that when the subsequent hemming wheel 3 hems the metal plate fixed by the pressing plate 6, the metal plate is subjected to excessive pressure from the hemming wheel 3, which causes the metal plate to deviate due to the single fixing method of the pressing plate 6. This ensures that the metal plate is firmly fixed and will not deviate, thereby ensuring the hemming quality of the metal plate. The built-in PLC controller starts the linear motor 4 to drive the hemming wheel 3 to reciprocate back and forth, and the hemming operation can be performed on the fixed metal plate.

[0041] As an embodiment of the present invention, an adjustment mechanism for adjusting the hemming angle of the metal plate is further provided, the adjustment mechanism comprising a worm gear 36 fixedly mounted on the front end of the fixed platform 2, a worm 37 is meshed at the lower end of the worm gear 36, and the left end of the worm 37 is rotatably mounted on the base 1;

[0042] During operation, the rotating worm 37 drives the worm wheel 36 and the fixed platform 2 to rotate on the base platform 1, which is beneficial for adjusting the hemming angle and curvature of the metal plate according to actual needs and has wide applicability.

[0043] Working principle:

[0044] When the present invention is used, the metal plate to be rolled is placed on the fixed platform 2, so that the left end of the metal plate is kept in contact with the limit block 1 22, and the screw rod 11 is rotated to drive the driving plate 8 to slide and descend, and the driving plate 8 drives the connecting rod 1 7, the spring 1 9 and the pressure plate 6 to descend synchronously, and the pressure plate 6 drives the sliding plate 19, the connecting rod 3 18, the drag block 17 and the spring 3 20 to descend synchronously, and the pressure plate 6 will also drive the connecting rod 2 14, the connecting plate 13, the spring 2 15, and the scraper 12 to descend synchronously, and the lower ends of the scraper 12 and the drag block 17 are lower than the lower end of the pressure plate 6, and the lower end of the drag block 17 is also lower than the lower end of the scraper 12, so the drag block 17 will first contact the upper surface of the metal plate, and as the driving plate 8 and the pressure plate 6 continue to descend, the diameter of the spring 1 9 is larger than the spring 3 20 and the spring 2 15, so, The spring three 20 will be compressed first, and the drag block 17 will drive the connecting rod three 18 to slide on the sliding plate 19. The drag block 17 will gradually and tightly clamp the metal plate and fix it on the supporting slider 16. At this time, the lower end of the scraper 12 will gradually fit the upper surface of the metal plate. As the pressure plate 6 continues to descend, the scraper 12 and the connecting plate 13 will slide upward on the connecting rod two 14, compressing the spring two 15. At the same time, the connecting plate 13 and the connecting rod two 14 will squeeze the airbag 35, so that the gas inside the airbag 35 will be ejected from the cleaning nozzle 34, which is conducive to the subsequent scraping of impurities and debris by the scraper 12, thereby ensuring the scraping quality of the subsequent scraper 12. As the spring three 20 is gradually compressed and the driving plate 8 continues to descend, the spring one 9 will be squeezed, so that the driving plate 8 slides down on the connecting rod 1 7. When the driving plate 8 descends, the inclined block 21 will also be driven to descend synchronously. The inclined block 21 squeezes the sliding plate 19 on the lower side, forcing the sliding plate 19 to slide to the left on the pressure plate 6. The sliding plate 19 will also drive the connecting rod 3 18, the drag block 17 and the spring 3 20 to slide to the left synchronously. Since the drag block 17 and the supporting slider 16 have already tightly fixed the metal plate, the sliding of the drag block 17 to the left will drive the metal plate and the supporting slider 16 to slide to the left synchronously. A number of balls can be arranged between the supporting slider 16 and the fixed platform 2 to reduce friction and make the metal plate slide to the left more smoothly. When the metal plate slides to the left, the lower end of the scraper 12 has been closely attached to the upper surface of the metal plate, and the scraper 12 can be used to remove impurities on the upper surface of the metal plate in advance. The scraped debris will be scraped off, and the impurities and debris on the lower surface of the metal plate will be scraped off by the right end corner of the fixed platform 2, so as to ensure the cleanliness of the upper and lower surfaces of the metal plate. The scraped and cleaned metal plate area will stop between the right side of the pressure plate 6 and the fixed platform 2, avoiding the adhesion of impurities and debris on the surface of the metal plate. As a result, when the pressure plate 6 fixes the metal plate later, the impurities and debris will cause a gap between the metal plate and the pressure plate 6 and the fixed platform 2, resulting in insufficient fixation, causing the metal plate to deviate during the subsequent metal plate hemming, thereby ensuring the subsequent hemming quality of the metal plate. When the inclined block 21 squeezes the sliding plate 19, the connecting rod three 18, the drag block 17, the metal plate and the supporting slider 16 to move to the left, the left end of the metal plate will be blocked by the limit block two 23 and stop moving, which is conducive to the automatic alignment of the metal plate.At this time, the drag block 17 and the supporting slider 16 continue to move left, which will gradually separate the metal plate from between the drag block 17 and the supporting slider 16. After separation, the lower end of the pressing plate 6 will tightly press and fix the metal plate on the fixing platform 2 under the action of the spring 9, completing the fixing of the metal plate. The whole process reduces the situation of manual dragging of the metal plate, saves manual labor, and improves the fixing efficiency of the metal plate. When the pressing plate 6 fixes the metal plate on the fixing platform 2, since the lower end of the sweeping strip 25 is on the same horizontal line as the lower end of the pressing plate 6, the lower end of the sweeping strip 25 will also fit on the metal plate. When the driving plate 8 continues to descend, it will drive the suction cup rod 24 and The magnetic block 30 descends synchronously. When the magnetic block 30 descends to the side close to the magnetic plate 28, it will generate a magnetic repulsive force on the magnetic plate 28, pushing the magnetic plate 28 to slide on the bracket 29 in a direction away from each other. The magnetic plate 28 will also drive the gear shaft 26 and the sweep bar 25 to move synchronously. The gear shaft 26 will rotate under the meshing action of the rack plate 27, and then drive the sweep bar 25 to rotate. The sweep bar 25 is arranged to facilitate the removal of impurities from the surface of the metal plate located on the lower side of the suction cup rod 24 (the sweep bar 25 will quickly pass through the surface of the metal plate on the lower side of the suction cup rod 24 before the suction cup rod 24 descends and fits the surface of the metal plate, and will not cause motion interference). The rotating sweep bar 2 5 will improve the cleaning quality of impurities, ensure that the subsequent suction cup rod 24 can be tightly adsorbed and fixed on the surface of the metal plate, ensure the subsequent fixing quality of the suction cup rod 24, at the same time, while the suction cup rod 24 is not in contact with the surface of the metal plate, the built-in PLC controller starts the micro water pump 33 to spray the water in the water tank 32 through the water spray pipe 31, and sprays it on the surface area of ​​the metal plate under the suction cup rod 24, ensuring the firmness of the subsequent suction cup rod 24, as the driving plate 8 drives the suction cup rod 24 to continue to descend, until the suction cup rod 24 is tightly adsorbed and attached to the surface of the metal plate, the screw 11 is stopped. The set suction cup rod 24 is conducive to the metal plate The two sides are fixed to avoid the situation that when the subsequent hemming wheel 3 hems the metal plate fixed by the pressing plate 6, the metal plate is subjected to excessive pressure from the hemming wheel 3, which causes the metal plate to deviate because the metal plate is only fixed by the pressing plate 6. This ensures that the metal plate is firmly fixed and will not deviate, thereby ensuring the hemming quality of the metal plate. The built-in PLC controller starts the linear motor 4 to drive the hemming wheel 3 to reciprocate back and forth, so that the fixed metal plate can be hemmed. The rotating worm 37 drives the worm wheel 36 and the fixed platform 2 to rotate on the bottom platform 1, which is conducive to adjusting the hemming angle and curvature of the metal plate according to actual needs, and has a wide range of applicability.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional semi-automatic hemming device controlled by a PLC, comprising a base (1), characterized in that: A fixed platform (2) is rotatably mounted on the upper end of the base (1), a rolling wheel (3) is provided on the right side of the fixed platform (2), a linear motor (4) is rotatably mounted on the upper end of the rolling wheel (3), a bracket (5) is provided on the outer side of the linear motor (4), and the lower end of the bracket (5) is fixedly mounted on the base (1); A fixing mechanism for fixing the metal plate on the fixing platform (2) is also provided, the fixing mechanism comprising a pressing plate (6) arranged on the upper side of the fixing platform (2), a connecting rod (7) being fixedly mounted on the upper end of the pressing plate (6), a driving plate (8) being slidably mounted through the upper end of the connecting rod (7), a spring (9) being sleeved on the outer side of the connecting rod (7), the upper and lower ends of the spring (9) being fixedly connected to the driving plate (8) and the pressing plate (6) respectively, a fixing frame (10) being slidably mounted on the left end of the driving plate (8), the lower end of the fixing frame (10) being fixedly mounted on the fixing platform (2), and the driving plate ( 8) A screw rod (11) is rotatably mounted on the upper end, and the upper side of the screw rod (11) is threadedly mounted on the fixed frame (10). A scraper (12) is abutted and fitted on the right end of the pressure plate (6). A connecting plate (13) is fixedly mounted on the upper end of the scraper (12). A second connecting rod (14) is slidably mounted on the left side of the connecting plate (13). The lower end of the second connecting rod (14) is fixedly mounted on the pressure plate (6). A second spring (15) is sleeved on the outer side of the second connecting rod (14). The upper and lower ends of the second spring (15) are fixedly connected to the second connecting rod (14) and the connecting plate (13) respectively. The connecting plate ( 13) is fixedly installed with an airbag (35) at the upper end, the upper end of the airbag (35) is fixedly connected to the second connecting rod (14), and the right end of the airbag (35) is fixedly connected to a cleaning nozzle (34), the upper end of the fixed platform (2) is symmetrically slidably installed with a support slider (16), and the upper end of the fixed platform (2) is provided with a slide groove corresponding to the support slider (16), and the upper side of the support slider (16) is provided with a drag block (17), and the upper end of the drag block (17) is fixedly installed with a third connecting rod (18), and the upper end of the third connecting rod (18) is penetrated and slidably installed with a sliding plate (19), and the third connecting rod (18) is slidably installed. (18) are sleeved with spring three (20) on the outer side, the upper and lower ends of spring three (20) are respectively fixedly connected to the sliding plate (19) and the drag block (17), and the ends of the sliding plate (19) close to each other are slidably connected to the pressure plate (6), the upper end of the sliding plate (19) is abutted and fitted with an inclined block (21), and the inclined block (21) is respectively fixedly connected to the front and rear ends of the driving plate (8), the upper left side of the supporting sliding block (16) is fixedly installed with a limit block one (22), and the upper end of the fixed platform (2) is located on the left side of the limit block one (22) and is provided with a limit block two (23); An adjustment mechanism for adjusting the metal plate hemming angle is also provided, the adjustment mechanism comprising a worm wheel (36) fixedly mounted on the front end of the fixed platform (2), a worm (37) meshing at the lower end of the worm wheel (36), and a left end of the worm (37) rotatably mounted on the base platform (1).

2. A multifunctional semi-automatic hemming device controlled by PLC according to claim 1, characterized in that: Suction cup rods (24) are fixedly mounted on both front and rear ends of the driving plate (8), sweep bars (25) are arranged on the lower side of the suction cup rods (24), a gear shaft (26) is fixedly mounted on the middle part of the sweep bar (25), a rack plate (27) is meshed at the left end of the gear shaft (26), the lower end of the rack plate (27) is fixedly mounted on the pressing plate (6), a magnetic plate (28) is rotatably mounted on the upper end of the gear shaft (26), a bracket 2 (29) is slidably mounted on the left end of the magnetic plate (28), the lower end of the bracket 2 (29) is fixedly mounted on the pressing plate (6), and magnetic blocks (30) are fixedly mounted on both front and rear ends of the driving plate (8) corresponding to the magnetic plates (28).

3. The multifunctional semi-automatic hemming device controlled by PLC according to claim 2 is characterized in that: The right side of the suction cup rod (24) is provided with a water spray pipe (31), the right end of the water spray pipe (31) is fixedly connected to a micro water pump (33), the right end of the micro water pump (33) is fixedly connected to a water tank (32), and the lower end of the water tank (32) is fixedly mounted on the pressing plate (6).

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