Pneumatic rivet pressing device for double-station scissor jack rivet

Abstract

The pneumatic rivet pressing device comprises a C-shaped frame, the C-shaped frame comprises a C-shaped supporting plate, a frame upper top plate is welded to the top of the C-shaped supporting plate, a frame bottom plate is welded to the bottom of the C-shaped supporting plate, and an inner concave cavity used for die installation and part rivet pressing areas is formed in the center of the C-shaped frame. A top hook rivet pressing power mechanism and a base rivet pressing power mechanism are mounted above the C-shaped frame; the top hook rivet pressing power mechanism comprises a gas-liquid pressure cylinder, a square flange, a left pressing plate, four guide sleeves, four guide columns and four limiting nuts, a cylinder body of the gas-liquid pressure cylinder is fixed to the upper top plate of the frame, the lower end of a piston rod of the gas-liquid pressure cylinder is in threaded connection with the square flange, the square flange is fixedly connected with the upper end of the left pressing plate through four screws, and the lower end of the left pressing plate is fixedly connected with the lower end of the right pressing plate through four screws. The left pressing plate is located in the left side of the inner concave cavity, and round holes are formed in the four corners of the upper top plate of the frame respectively.

Description

Technical Field

[0001] The utility model relates to the field of scissor-type jack assembly technology and riveting tooling, and in particular to a double-station scissor-type jack rivet pneumatic riveting device. Background Art

[0002] The scissor jack is light and quick to use. It is currently an essential on-board product for major domestic automobile factories. In the process of producing and assembling this scissor jack, it is an indispensable process to rivet the top hook rivet and the base rivet after completing the process of inserting the top hook rivet and the base rivet. At present, in the scissor jack manufacturing industry, the pressure riveting of the top hook rivet and the base rivet of the scissor jack requires a huge investment and has low flexibility. It is only suitable for the production of ultra-large quantities of jacks in the same series. In addition to automatic pressure riveting on the fully automatic assembly line, most of them still use traditional belt conveyor lines. The pressure riveting station is equipped with a 16-ton punch and a mold with two stations on the left and right. The top hook rivet part and the base rivet part of the jack are manually placed on the left and right stations for secondary riveting operations. This mode is not very cost-effective. The invention has low investment and high flexibility, and is suitable for the assembly and production of almost all types of jacks. Although the mold with two left and right stations can reduce labor costs, the punching and riveting force lines of the left and right stations deviate greatly from the punching pressure line of the punch press, which makes the punching and riveting size unstable. At the same time, the guide rails of the punch press wear quickly, resulting in high equipment maintenance costs. In addition, the left and right stations share a punching stroke, so that the punching sizes of the top hook rivets and the base rivets cannot be adjusted separately on the punch press. The height of the lower positioning columns on the left and right stations of the mold can only be adjusted, which makes it very inconvenient to debug the punching and riveting size. At the same time, with the improvement of people's requirements for the production environment, the vibration and noise generated by the punch press during each punching process are very large, and they also need to be optimized or replaced. Therefore, it is necessary to provide a double-station scissor-type jack rivet pneumatic riveting device to solve the above problems. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a double-station scissor-type jack rivet pneumatic riveting device to solve at least one of the above technical problems.

[0004] The technical solution of the utility model is: a double-station scissor-type jack rivet pneumatic riveting device, comprising a C-shaped frame, characterized in that the C-shaped frame comprises a C-shaped support plate, the top of the C-shaped support plate is welded with a frame top plate, the bottom of the C-shaped support plate is welded with a frame bottom plate, the center of the C-shaped frame is provided with an inner concave cavity for mold installation and component riveting area, and a top hook rivet riveting power mechanism and a base rivet riveting power mechanism are installed above the C-shaped frame;

[0005] The top hook rivet riveting power mechanism comprises a gas-liquid booster cylinder, a square flange, a left pressure plate, four guide sleeves, four guide pillars and four limit nuts, the cylinder body of the gas-liquid booster cylinder is fixed on the upper top plate of the frame, the lower end of the piston rod of the gas-liquid booster cylinder is threadedly connected to the square flange, the square flange is fixedly connected to the upper end of the left pressure plate by four screws, the left pressure plate is located on the left side of the inner concave cavity, the four corners of the upper top plate of the frame are respectively provided with circular holes, and the center of the upper top plate of the frame is provided with four circular holes, the outer circles of the four guide sleeves are respectively matched with the two circular holes on the left sides of the upper top plate of the frame and the two circular holes in the center of the upper top plate of the frame, and the guide sleeves are fixed to the upper top plate of the frame through an elastic retaining ring, the lower ends of the four guide pillars are respectively fixed to the four corners of the left pressure plate by threads, and at the same time, the inner holes of the four guide sleeves are respectively matched with the four guide pillars, and the four limit nuts are respectively fixed to the upper ends of the four guide pillars;

[0006] The base rivet riveting power mechanism includes a gas-liquid booster cylinder, a square flange, a right pressure plate, three guide sleeves, three guide pillars and three limit nuts. A groove is provided in the middle of the right side of the left pressure plate, and a boss is provided in the middle of the left side of the right pressure plate. The boss of the right pressure plate is located in the groove of the left pressure plate, and a gap of 6 mm is left on the opposite sides. The outer circles of the three guide sleeves respectively cooperate with a circular hole in the center of the upper top plate of the frame and two circular holes on the right side of the upper top plate of the frame, and the guide sleeves are fixed to the upper top plate of the frame by an elastic retaining ring. The lower ends of the three guide pillars are respectively fixed to the middle of the left side and the two corners on the right side of the right pressure plate with threads, and the inner holes of the three guide sleeves respectively cooperate with the three guide pillars.

[0007] The utility model adds a guide device to the riveting power mechanism to ensure that the direction of the force does not change during the riveting, so as to ensure the horizontal stability of the left and right pressure plates when they move up and down. In addition, seven limit nuts are respectively fixed on the upper ends of the seven guide pillars to prevent the left and right pressure plates from falling freely after the pneumatic press is assembled, which plays a limiting role. The left and right pressure plates have different shapes and different numbers of guide pillars and guide sleeves. Such different structures are mainly to minimize the center distance of the riveting force lines of the left and right stations as much as possible under the premise of selecting the same specification of the gas-liquid booster cylinder, ensure that the structural size of the pneumatic riveting device is as compact as possible, minimize the moving distance when manually operating the two stations, and thus reduce the labor intensity of the workers.

[0008] Preferably, the upper end of the piston rod of the gas-liquid booster cylinder is provided with an adjusting nut and a locking nut. The up and down stroke of the piston rod of the booster cylinder can be adjusted by first loosening the locking nut and then rotating the adjusting nut, that is, the riveting size of the rivet can be adjusted. After the stroke adjustment is completed, the locking nut is locked to limit the position of the adjusting nut, thereby ensuring the consistency of the riveting size of the rivet.

[0009] Further preferably, the C-shaped frame also includes a work table, the work table includes an upper work table and a lower work table, the upper work table is used to install the upper mold and the lower work table is used to install the lower mold, the upper work table is provided with two, the lower surface of the left pressure plate and the lower plane of the right pressure plate are the upper work table, the upper end of the lower platform plate of the inner concave cavity is fixed with a pad by screws, the upper surface of the pad is the lower work table, the transverse centers of the two upper work tables are each provided with an upper T-shaped groove, the longitudinal centers of the two upper work tables are each engraved with an upper center line, the transverse center of the lower work table is provided with a lower T-shaped groove, and the lower work table is respectively engraved with two lower center lines at the longitudinal positions of the pressure action lines corresponding to the left and right workstations.

[0010] The T-slot on the upper work table is used to fix the upper mold. The center line of the upper work table is convenient for centering the upper mold. The T-slot on the lower work table is used to fix the lower mold. The lower molds of the left and right stations share a lower work table. The lower work table has two center lines engraved on it at the longitudinal position corresponding to the pressure action line of the left and right stations, which is convenient for centering the left and right lower molds.

[0011] Further preferably, a top hook rivet riveting die and a base rivet riveting die are provided between the upper work table and the lower work table, and the top hook rivet riveting die and the base rivet riveting die are die with the same structure, and the die comprises an upper die and a lower die, and the lower die comprises a lower die bottom plate, a lower die fixing plate, two lower positioning columns, a rear positioning plate, a side positioning plate, a stripping plate, two die guide columns and a plurality of hexagon sockets, and the upper die comprises an upper die top plate, an upper die fixing plate, two rivet heads, two die guide sleeves and a plurality of hexagon sockets, and the top hook rivet riveting die is installed on the left side of the C-shaped frame, the bottom plate of the lower die of the top hook rivet riveting die is affixed to the lower work table and fixed with screws, the top plate of the upper die of the top hook rivet riveting die is affixed to the upper left work surface and fixed with screws, and the base rivet riveting die is installed on the right side of the C-shaped frame in the same way.

[0012] Each set of riveting dies is equipped with a pair of die guide posts and guide sleeves on the left and right sides. On the one hand, it is convenient for automatic centering when installing the upper and lower dies. On the other hand, it can improve the accuracy of the motion guide of the riveting power mechanism when riveting two rivets, making the riveting size more stable. In the top hook rivet riveting die, the end faces of the two lower positioning column pits are used to place the big end faces of the lower ends of the two top hook rivets, which can limit the three degrees of freedom of Z-direction movement, X-direction rotation and Y-direction rotation. The front end face of the top hook is flush with the front of the rear positioning plate to limit the two degrees of freedom of Y-direction movement and Z-direction rotation. The left side of the top hook is flush with the right side of the side positioning plate, which can limit one degree of freedom of X-direction movement. In this way, the six degrees of freedom of the jack are completely restricted, making the positioning reliable and ensuring the stability and consistency of the riveting size.

[0013] Preferably, a stripping plate is provided on the upper end of the rear positioning plate. During the riveting process, the rivet head and the rivet will generate a small bonding force, so that when the rivet head just rises, it will bond the rivet and the jack upwards. At this time, the stripping plate blocks the upper end surface of the top hook, so that the rivet head and the rivet are separated, thus completing the automatic demoulding. The working principle of the base rivet riveting mold is the same.

[0014] Further preferably, the top hook rivet riveting power mechanism and the base rivet riveting power mechanism each include a set of pneumatic-electric linkage control systems, each set of pneumatic-electric linkage control systems has the same structure, and the pneumatic-electric linkage control system is mainly composed of a pneumatic triplet, an intelligent controller, an electromagnetic reversing valve and a foot switch. The pneumatic triplet of each set of pneumatic-electric linkage control system is respectively fixed on the left and right sides of the C-shaped frame, and the pneumatic triplet includes an air pressure reducing valve, a filter and an oil mist device. The pressure reducing valve can stabilize the air source to keep the air source in a constant state, which can reduce the damage to hardware such as valves or actuators caused by sudden changes in the air pressure of the air source. At the same time, the pressure required for riveting or pressing the parts can be adjusted by adjusting the air pressure of the air pressure reducing valve. The filter is used to clean the air source and can filter the moisture in the compressed air to prevent moisture from entering the device with the gas. The oil mist device can lubricate the moving parts of the body, and can lubricate the parts that are inconvenient to add lubricating oil, greatly extending the service life of the body.

[0015] Further preferably, the intelligent controller is installed in front of the upper end of the C-shaped frame, the electromagnetic reversing valves are respectively located at the rear side of the gas-liquid booster cylinder, and the foot switch is arranged near the operator's foot.

[0016] The intelligent controller uses AC220V input / DC24V output voltage, and the working mode is optional: manual / semi-automatic / fully automatic operation, with functions such as adjusting riveting time and counting. The reversing valve is used to control the working direction and working mode of the gas-liquid booster cylinder. The foot switch is used to start or stop the two sets of gas-liquid booster cylinders. The two sets of gas-electric linkage control systems can realize the linkage of the top hook rivet riveting power mechanism and the base rivet riveting power mechanism according to the program through the connection of the two sets of intelligent controllers, and can also be controlled and operated independently. At present, the top hook rivet riveting station and the base rivet riveting station adopt independent semi-automatic mode.

[0017] Further preferably, the gas-liquid booster cylinder is a gas-liquid booster cylinder with a pressure of 15 tons, a total stroke of 100, and a pressure stroke of 20. This specification is available in the market, which can meet the riveting requirements and is convenient for procurement and manufacturing.

[0018] Further preferably, the guide sleeve is a flangeless linear bearing LM30UU with a size of 30*45*64, and the guide column is a guide column made of 40Cr steel. This guide sleeve is also available on the market, with the characteristics of compact structure, high guiding accuracy, friction resistance, durability, long life and low maintenance cost. High-quality 40Cr steel, carburized heat treatment, strong and durable, not easy to deform.

[0019] Further preferably, the thickness of the top plate of the frame is 45 mm, and U-shaped plates are welded at the four corners of the bottom plate of the frame. The U-shaped plates are subsequently used to fix to the workbench, and the C-shaped frame has the advantages of large mold installation space and operation space.

[0020] During operation, according to the die installation requirements, the top hook rivet riveting die and the base rivet riveting die are correctly installed on both sides of the C-shaped frame. At this time, the riveting force lines of the left and right workstations coincide with the left and right pneumatic pressure lines respectively. Then, according to the process size requirements, the top hook rivet part of the jack is correctly placed on the lower die of the top hook rivet riveting die according to the positioning requirements of the die. The lowest position of the cylinder stroke is adjusted by adjusting the nut to debug the riveting until it meets the riveting size of the part and then the locking nut is locked. Similarly, the base rivet riveting die is adjusted according to the process size requirements, and then the two sets of intelligent controllers are switched to independent semi-automatic operation mode. At this time, the top hook rivet part of the jack is manually placed correctly on the lower die of the top hook rivet riveting die on the left. Then, step on the left foot switch with your left foot and release it. At this time, the top hook riveting power mechanism drives the two rivet heads of the upper die of the top hook rivet riveting die through the upper left working platform, and completes the rapid descent to touch the top hook rivet, pressurize the riveting and rise according to the program time set by the intelligent controller. The rivet head and the rivet are automatically separated through the stripping plate on the mold. Then the jack is manually changed in direction, and the rivet part of the jack base is correctly placed on the lower mold of the base rivet riveting mold on the right. Then, step on the right foot switch with your right foot and release it. At this time, the base riveting power mechanism drives the two rivet heads of the upper mold of the base rivet riveting mold through the upper right working platform. According to the program time set by the intelligent controller, the three processes of rapid descent to touch the base rivet, pressurized riveting and returning to the initial position are completed. At the same time, the rivet head and the rivet are automatically separated through the stripping plate on the mold. In this way, the riveting of the top hook rivet and the base rivet of the jack are completed. Then the work can be repeated to carry out batch riveting of the top hook rivet and the base rivet of the jack.

[0021] The utility model discloses a double-station scissor-type jack rivet pneumatic riveting device, which can complete the riveting and demoulding of the top hook rivet and the base rivet by manual operation. With this riveting device, the riveting size of the top hook rivet and the base rivet can be adjusted respectively. In addition, the riveting force lines of the left and right stations coincide with the left and right pneumatic pressure lines respectively, so that the riveting size of the rivet is stable. At the same time, there are demoulding plates on the left and right station molds, so that the rivet head and the rivet are automatically separated. This device has stable riveting during operation, and the vibration and noise generated are very small. It has a long service life, and at the same time, it has a compact structure and is easy to operate. In addition, the modified device can be promoted and applied to similar parts with double-station riveting requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a perspective schematic diagram of the front side of the general assembly of an embodiment of the utility model.

[0023] Figure 2 It is a three-dimensional schematic diagram of the rear side of the general assembly of the utility model.

[0024] Figure 3 It is a three-dimensional schematic diagram of the connection structure between the left and right pressure plates and the guide pillars in an embodiment of the utility model.

[0025] Figure 4 It is a partial schematic diagram of the positioning of the top hook rivet before riveting in an embodiment of the utility model.

[0026] Figure 5 It is a partial schematic diagram of the top hook rivet during riveting in the embodiment of the utility model.

[0027] Figure 6 It is a three-dimensional schematic diagram of a scissor jack according to an embodiment of the utility model.

[0028] The reference numerals and components involved in the drawings are as follows:

[0029] 1. C-shaped frame, 11. Frame top plate, 12. C-shaped support plate, 13. U-shaped plate, 2. Top hook rivet riveting power mechanism, 21. Gas-liquid booster cylinder, 22. Square flange, 23. Left pressure plate, 24. Guide sleeve, 25. Guide column, 26. Limit nut, 27. Adjustment nut, 28. Locking nut, 29. Upper T-slot, 3. Base rivet riveting power mechanism, 30. Upper center line, 33. Right pressure plate, 4. Top hook rivet riveting mold, 40. Mold guide sleeve, 41. Lower die bottom plate, 42. Lower die fixing plate, 43. Lower positioning column, 44. Rear positioning plate, 45. Side positioning plate, 46. Stripping plate, 47. Die guide column, 48. Upper die fixing plate, 49. Riveting head, 5. Base rivet riveting die, 50. Upper die top plate, 6. Pneumatic triplex, 7. Intelligent controller, 8. Pad, 81. Pad T-slot, 82. Pad center line, 9. Jack, 91. Top hook rivet, 92. Top hook, 93. Base rivet, 94 Jack base. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

[0031] Example 1

[0032] Please refer to the attached Figure 1-Figure 6 A double-station scissor-type jack rivet pneumatic riveting device comprises a C-shaped frame 1, the C-shaped frame comprises a C-shaped supporting plate 12, a frame upper top plate 11 is welded on the top of the C-shaped supporting plate, a frame bottom plate is welded on the bottom of the C-shaped supporting plate, an inner concave cavity for mold installation and component riveting area is provided in the center of the C-shaped frame, a top hook rivet riveting power mechanism 2 and a base rivet riveting power mechanism 3 are installed above the C-shaped frame; the top hook rivet riveting power mechanism comprises a gas-liquid booster cylinder 21, a square flange 22, a left pressure plate 23, four guide sleeves 24, four guide pillars 25 and four limit nuts 26, the cylinder body of the gas-liquid booster cylinder is fixed on the frame upper top plate, the lower end of the piston rod of the gas-liquid booster cylinder is threadedly connected to the square flange, the square flange is fixedly connected to the upper end of the left pressure plate by four screws, the left pressure plate is located on the left side of the inner concave cavity, four corners of the frame upper top plate are respectively provided with circular holes, and four circular holes are provided in the center of the frame upper top plate, and the outer circles of the four guide sleeves are respectively provided with circular holes. The rivet pressing and riveting power mechanism of the base comprises a gas-liquid booster cylinder, a square flange, a right pressing plate 33, three guide sleeves, three guide sleeves and three limit nuts. A groove is provided in the middle of the right side of the left pressing plate, a boss is provided in the middle of the left side of the right pressing plate, and a gap of 6 mm is left on the opposite sides. The outer circles of the three guide sleeves are respectively matched with a circular hole in the center of the top plate of the frame and two circular holes on the right side of the top plate of the frame, and the guide sleeve is fixed to the top plate of the frame through an elastic retaining ring. The lower ends of the three guide sleeves are respectively fixed with threads at the middle of the left side and the two corners of the right side of the right pressing plate, and the inner holes of the three guide sleeves are respectively matched with the three guide sleeves.

[0033] The utility model adds a guide device to the riveting power mechanism to ensure that the direction of the force does not change during the riveting, so as to ensure the horizontal stability of the left and right pressure plates when they move up and down. In addition, seven limit nuts are respectively fixed on the upper ends of the seven guide pillars to prevent the left and right pressure plates from falling freely after the pneumatic press is assembled, which plays a limiting role. The left and right pressure plates have different shapes and different numbers of guide pillars and guide sleeves. Such different structures are mainly to minimize the center distance of the riveting force lines of the left and right stations as much as possible under the premise of selecting the same specification of the gas-liquid booster cylinder, ensure that the structural size of the pneumatic riveting device is as compact as possible, minimize the moving distance when manually operating the two stations, and thus reduce the labor intensity of the workers.

[0034] Further preferably, the upper end of the piston rod of the gas-liquid booster cylinder is provided with an adjusting nut 27 and a locking nut 28. By first loosening the locking nut and then rotating the adjusting nut, the up and down stroke of the piston rod of the booster cylinder can be adjusted, that is, the riveting size of the rivet can be adjusted. After the stroke adjustment is completed, the locking nut is locked to limit the position of the adjusting nut, thereby ensuring the consistency of the riveting size of the rivet.

[0035] Further preferably, the C-shaped frame also includes a work surface, the work surface includes an upper work surface and a lower work surface, the upper work surface is used to install the upper mold and the lower work surface is used to install the lower mold, there are two upper work surfaces, the lower surface of the left pressure plate and the lower plane of the right pressure plate are the upper work surfaces, the upper end of the lower platform plate of the inner concave cavity is fixed with a pad 8 by screws, the upper surface of the pad is the lower work surface, the transverse center of the two upper work surfaces is provided with an upper T-shaped groove 29, the longitudinal center of the two upper work surfaces is engraved with an upper center line 30, the transverse center of the lower work surface is provided with a lower T-shaped groove 81, and the lower work surface is engraved with two lower center lines 82 at the longitudinal positions corresponding to the pressure action lines of the left and right workstations. The T-slot on the upper work table is used to fix the upper mold. The center line of the upper work table is convenient for centering the upper mold. The T-slot on the lower work table is used to fix the lower mold. The lower molds of the left and right stations share a lower work table. The lower work table is engraved with two center lines at the longitudinal position corresponding to the pressure action line of the left and right stations to facilitate centering the left and right lower molds.

[0036] Further preferably, a top hook rivet riveting mold 4 and a base rivet riveting mold 5 are provided between the upper work table and the lower work table. The top hook rivet riveting mold and the base rivet riveting mold are molds with the same structure. The mold includes an upper mold and a lower mold. The lower mold includes a lower mold bottom plate 41, a lower mold fixing plate 42, two lower positioning columns 43, a rear positioning plate 44, a side positioning plate 45, a stripping plate 46, two mold guide columns 47 and a number of hexagonal sockets. The upper mold includes an upper mold top plate 50, an upper mold fixing plate 48, two rivet heads 49, two mold guide sleeves 40 and a number of hexagonal sockets. The top hook rivet riveting mold is installed on the left side of the C-shaped frame, the bottom plate of the lower mold of the top hook rivet riveting mold is attached to the lower work table and fixed with screws, the top plate of the upper mold of the top hook rivet riveting mold is attached to the upper left work surface and fixed with screws, and the base rivet riveting mold is installed on the right side of the C-shaped frame in the same way. Each set of riveting dies is provided with a pair of die guide posts and guide sleeves on the left and right sides, which, on the one hand, facilitates automatic centering when installing the upper and lower dies, and on the other hand, can improve the accuracy of the motion guide of the riveting power mechanism when riveting the two rivets, making the riveting size more stable. In the top hook rivet riveting die, the end faces of the two lower positioning post pits are used to place the lower end faces of the two top hook rivets 91, which can limit the three degrees of freedom of Z-direction movement, X-direction rotation and Y-direction rotation. The front end face of the top hook 92 is flush with the front of the rear positioning plate to limit the two degrees of freedom of Y-direction movement and Z-direction rotation. The left side of the top hook is flush with the right side of the side positioning plate, which can limit one degree of freedom of X-direction movement. In this way, the six degrees of freedom of the jack are completely restricted, making the positioning reliable and ensuring the stability and consistency of the riveting size.

[0037] Preferably, a stripping plate is provided on the upper end of the rear positioning plate. During the riveting process, the rivet head and the rivet will generate a small bonding force, so that when the rivet head just rises, it will bond the rivet and the jack upwards. At this time, the stripping plate blocks the upper end surface of the top hook, so that the rivet head and the rivet are separated, thus completing the automatic demoulding. The working principle of the base rivet riveting mold is the same.

[0038] Further preferably, the top hook rivet riveting power mechanism and the base rivet riveting power mechanism each include a set of pneumatic-electric linkage control systems, each set of pneumatic-electric linkage control systems has the same structure, and the pneumatic-electric linkage control systems are mainly composed of a pneumatic triplet 6, an intelligent controller 7, an electromagnetic reversing valve and a foot switch. The pneumatic triplet of each set of pneumatic-electric linkage control systems is respectively fixed on the left and right sides of the C-shaped frame, and the pneumatic triplet includes an air pressure reducing valve, a filter, and an oil mist collector. The pressure reducing valve can stabilize the air source to keep the air source in a constant state, which can reduce the damage to hardware such as valves or actuators caused by sudden changes in the air pressure of the air source. At the same time, the pressure required for riveting or pressing the parts can be adjusted by adjusting the air pressure of the air pressure reducing valve. The filter is used to clean the air source and can filter the moisture in the compressed air to prevent moisture from entering the device with the gas. The oil mist collector can lubricate the moving parts of the body, and can lubricate the parts that are inconvenient to add lubricating oil, greatly extending the service life of the body.

[0039] Further preferably, the intelligent controller is installed in front of the upper end of the C-shaped frame, the electromagnetic reversing valves are respectively located on the rear side of the gas-liquid booster cylinder, and the foot switch is arranged near the operator's feet. The intelligent controller uses AC220V input / DC24V output, and the working mode is optional: manual / semi-automatic / fully automatic operation, with functions such as adjusting the riveting time and counting. The reversing valve is used to control the working direction and working mode of the gas-liquid booster cylinder. The foot switch is used to start or stop the two sets of gas-liquid booster cylinders respectively. The two sets of gas-electric linkage control systems are connected through the connection of two sets of intelligent controllers, which can realize the linkage of the top hook rivet riveting power mechanism and the base rivet riveting power mechanism according to the program, and can also be controlled and operated independently. At present, the top hook rivet riveting station and the base rivet riveting station adopt independent semi-automatic modes.

[0040] Further preferably, the gas-liquid booster cylinder is a gas-liquid booster cylinder with a pressure of 15 tons, a total stroke of 100, and a pressure stroke of 20. This specification is available on the market, which can meet the riveting requirements and is convenient for procurement and manufacturing.

[0041] Further preferably, the guide sleeve is a flangeless linear bearing LM30UU with a size of 30*45*64, and the guide column is a guide column made of 40Cr steel. This guide sleeve is also available on the market, with the characteristics of compact structure, high guiding accuracy, friction resistance, durability, long life and low maintenance cost. High-quality 40Cr steel, carburized heat treatment, strong and durable, not easy to deform.

[0042] Further preferably, the thickness of the top plate of the frame is 45 mm, and the four corners of the frame bottom plate are respectively welded with U-shaped plates 13. The U-shaped plates are subsequently used to fix to the workbench, and the C-shaped frame has the advantages of large mold installation space and operation space.

[0043] During operation, according to the die installation requirements, the top hook rivet press riveting mold and the base rivet press riveting mold are correctly installed on both sides of the C-shaped frame. At this time, the riveting force lines of the left and right workstations coincide with the left and right pneumatic pressure lines respectively. Then, according to the process size requirements, the top hook rivet part of the jack is correctly placed on the lower die of the top hook rivet press riveting mold according to the positioning requirements of the mold. The lowest position of the cylinder stroke is adjusted by adjusting the nut to debug the riveting until it meets the riveting size of the part and then the locking nut is locked. Similarly, the base rivet press riveting mold is adjusted according to the process size requirements, and then the two sets of intelligent controllers are switched to independent semi-automatic operation mode. At this time, the top hook rivet part of the jack is manually placed correctly on the lower die of the top hook rivet press riveting mold on the left. Then, step on the left foot switch with your left foot and release it. At this time, the top hook press riveting power mechanism drives the two rivet heads of the upper die of the top hook rivet press riveting mold through the upper left working platform, and completes the rapid descent to touch the top hook rivet, pressurize the press riveting, and return to the initial position according to the program time set by the intelligent controller. The rivet head and the rivet are automatically separated through the stripping plate on the mold. Then the jack 9 is manually changed in another direction, and the rivet part of the jack base 94 is correctly placed into the lower mold of the base rivet 93 riveting mold on the right. Then the right foot switch is stepped on with the right foot and released. At this time, the base riveting power mechanism drives the two rivet heads of the upper mold of the base rivet riveting mold through the upper right working platform. According to the program time set by the intelligent controller, the three processes of rapid descent to touch the base rivet, pressurized riveting and returning to the initial position are completed. At the same time, the rivet head and the rivet are automatically separated through the stripping plate on the mold. In this way, the riveting of the top hook rivet and the base rivet of the jack are completed. Then the work can be repeated to carry out batch riveting of the top hook rivet and the base rivet of the jack.

[0044] The utility model discloses a double-station scissor-type jack rivet pneumatic riveting device, which can complete the riveting and demoulding of the top hook rivet and the base rivet by manual operation. With this riveting device, the riveting size of the top hook rivet and the base rivet can be adjusted respectively. In addition, the riveting force lines of the left and right stations coincide with the left and right pneumatic pressure lines respectively, so that the riveting size of the rivet is stable. At the same time, there are demoulding plates on the left and right station molds, so that the rivet head and the rivet are automatically separated. This device has stable riveting during operation, and the vibration and noise generated are very small. It has a long service life, and at the same time, it has a compact structure and is easy to operate. In addition, the modified device can be promoted and applied to similar parts with double-station riveting requirements.

[0045] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the principles of the present invention. These improvements and supplements should also be regarded as the protection scope of the present invention.

Claims

1. A double-station scissor jack rivet pneumatic riveting device, comprising a C-shaped frame, characterized in that: The C-shaped frame comprises a C-shaped support plate, a frame top plate is welded to the top of the C-shaped support plate, a frame bottom plate is welded to the bottom of the C-shaped support plate, an inner concave cavity for mold installation and component riveting area is provided in the center of the C-shaped frame, and a top hook rivet riveting power mechanism and a base rivet riveting power mechanism are installed above the C-shaped frame; The top hook rivet riveting power mechanism comprises a gas-liquid booster cylinder, a square flange, a left pressure plate, four guide sleeves, four guide pillars and four limit nuts, the cylinder body of the gas-liquid booster cylinder is fixed on the upper top plate of the frame, the lower end of the piston rod of the gas-liquid booster cylinder is threadedly connected to the square flange, the square flange is fixedly connected to the upper end of the left pressure plate by four screws, the left pressure plate is located on the left side of the inner concave cavity, the four corners of the upper top plate of the frame are respectively provided with circular holes, and the center of the upper top plate of the frame is provided with four circular holes, the outer circles of the four guide sleeves are respectively matched with the two circular holes on the left sides of the upper top plate of the frame and the two circular holes in the center of the upper top plate of the frame, and the guide sleeves are fixed to the upper top plate of the frame through an elastic retaining ring, the lower ends of the four guide pillars are respectively fixed to the four corners of the left pressure plate by threads, and at the same time, the inner holes of the four guide sleeves are respectively matched with the four guide pillars, and the four limit nuts are respectively fixed to the upper ends of the four guide pillars; The base rivet riveting power mechanism includes a gas-liquid booster cylinder, a square flange, a right pressure plate, three guide sleeves, three guide pillars and three limit nuts. A groove is provided in the middle of the right side of the left pressure plate, and a boss is provided in the middle of the left side of the right pressure plate. The boss of the right pressure plate is located in the groove of the left pressure plate, and a gap of 6 mm is left on the opposite sides. The outer circles of the three guide sleeves respectively cooperate with a circular hole in the center of the upper top plate of the frame and two circular holes on the right side of the upper top plate of the frame, and the guide sleeves are fixed to the upper top plate of the frame by an elastic retaining ring. The lower ends of the three guide pillars are respectively fixed to the middle of the left side and the two corners on the right side of the right pressure plate with threads, and the inner holes of the three guide sleeves respectively cooperate with the three guide pillars.

2. A double-station scissor jack rivet pneumatic riveting device according to claim 1, characterized in that: The C-shaped frame also includes a work surface, which includes an upper work surface and a lower work surface, the upper work surface is used to install the upper mold and the lower work surface is used to install the lower mold, and the upper work surface is provided with two, the lower surface of the left pressure plate and the lower plane of the right pressure plate are the upper work surfaces, the upper end of the lower platform plate of the inner concave cavity is fixed with a pad by screws, and the upper surface of the pad is the lower work surface, the transverse centers of the two upper work surfaces are each provided with an upper T-shaped groove, the longitudinal centers of the two upper work surfaces are each engraved with an upper center line, the transverse center of the lower work surface is provided with a lower T-shaped groove, and the lower work surface is respectively engraved with two lower center lines at the longitudinal positions of the pressure action lines corresponding to the left and right workstations.

3. A double-station scissor jack rivet pneumatic riveting device according to claim 2, characterized in that: A top hook rivet riveting die and a base rivet riveting die are provided between the upper work table and the lower work table. The top hook rivet riveting die and the base rivet riveting die are die with the same structure. The die comprises an upper die and a lower die. The lower die comprises a lower die bottom plate, a lower die fixing plate, two lower positioning columns, a rear positioning plate, a side positioning plate, a stripping plate, two guide columns and a plurality of hexagon sockets. The upper die comprises an upper die top plate, an upper die fixing plate, two rivet heads, two guide sleeves and a plurality of hexagon sockets. The top hook rivet riveting die is installed on the left side of the C-shaped frame. The bottom plate of the lower die of the top hook rivet riveting die is affixed to the lower work table and fixed with screws. The top plate of the upper die of the top hook rivet riveting die is affixed to the upper left work surface and fixed with screws. The base rivet riveting die is installed on the right side of the C-shaped frame in the same way.

4. A double-station scissor jack rivet pneumatic riveting device according to claim 1, characterized in that: The top hook rivet riveting power mechanism and the base rivet riveting power mechanism respectively include a set of pneumatic-electric linkage control systems, and each set of pneumatic-electric linkage control systems has the same structure. The pneumatic-electric linkage control systems are mainly composed of a pneumatic triplet, an intelligent controller, an electromagnetic reversing valve and a foot switch. The pneumatic triplet of each set of pneumatic-electric linkage control systems is respectively fixed on the left and right sides of the C-shaped frame, and the pneumatic triplet includes an air pressure reducing valve, a filter, and an oil mist collector.

5. A double-station scissor jack rivet pneumatic riveting device according to claim 4, characterized in that: The thickness of the top plate of the frame is 45 mm, and U-shaped plates are welded at the four corners of the bottom plate of the frame.

6. A double-station scissor jack rivet pneumatic riveting device according to claim 1, characterized in that: An adjusting nut and a locking nut are arranged on the upper end of the piston rod of the gas-liquid booster cylinder.

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