SPR (Surface Plasmon Resonance) self-punching riveting equipment for integrally die-cast vehicle body and

Abstract

The invention discloses SPR (Surface Plasmon Resonance) self-punching riveting equipment for an integrally die-cast vehicle body and a machining method. The advancing and retreating plate is connected to the machining table through a driving mechanism; the at least one clamping mechanism is arranged on the top surface of the advancing and retreating plate; the at least one self-punching-riveting mechanism is detachably connected to the machining table; a vehicle body is fixed through the clamping mechanism and conveyed to the self-punching-riveting mechanism through the driving mechanism via the advancing and retreating plate, and the vehicle body is riveted and fixed through the self-punching-riveting mechanism. According to the SPR self-punching riveting equipment, accurate movement of a single vehicle body can be achieved, riveting machining can be conducted on multiple positions of the vehicle body at the same time, the machining efficiency and precision of the SPR self-punching riveting equipment are greatly improved, the labor intensity of manual operation is reduced, meanwhile, multiple vehicle bodies can be selected to be riveted at the same time according to the sizes of the vehicle bodies, and use is flexible and convenient.

Description

Technical Field

[0001] The invention relates to SPR self-piercing riveting equipment and a processing method for an integrated die-casting vehicle body. Background Art

[0002] In recent years, with the gradual rise of new energy vehicles, "lightweight" has become a development trend. Lightening the car body is very beneficial to the energy consumption of the whole vehicle, vehicle control stability and collision safety.

[0003] SPR (Self-piercing Rivet) self-piercing riveting is an important connection technology for automobiles to achieve lightweight, energy conservation and emission reduction, and increase the range of new energy vehicles. Self-piercing riveting is a process in which SPR rivets penetrate the plate under the action of external force, flow and extend in the underlying material, and form a mutually embedded plastic deformation rivet connection process. The riveted point has high tensile strength and shear strength. The self-piercing riveting process solves the problem that aluminum spot welding technology cannot meet the connection performance requirements, and overcomes the problems of insufficient fatigue strength, incompatibility between rivet coating and aluminum.

[0004] However, due to defects in structural design, the self-piercing riveting equipment in the prior art can generally only process car bodies of the same size and shape, which has poor practicality and low processing efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a technical solution of SPR self-piercing riveting equipment and processing method for an integrated die-casting car body in view of the deficiencies in the prior art. Not only can the precise movement of a single car body be achieved, but also riveting processing can be performed on multiple positions of the car body at the same time, which greatly improves the processing efficiency and precision of the SPR self-piercing riveting equipment and reduces the labor intensity of manual operation. At the same time, multiple car bodies can be selected according to the size of the car body for riveting processing at the same time, which is flexible and convenient to use. The processing method has simple steps and can meet the riveting processing of not only a single car body but also the simultaneous riveting processing of multiple parts. It is flexible and convenient to use, which greatly reduces the labor intensity of manual operation and improves the riveting quality.

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

[0007] The SPR self-piercing riveting equipment for integrated die-casting car bodies is characterized by:

[0008] Processing table;

[0009] An advance and retreat plate, which is connected to the processing table through a driving mechanism;

[0010] At least one clamping mechanism, the clamping mechanism is arranged on the top surface of the advancing and retreating plate;

[0011] and at least one self-piercing riveting mechanism, the self-piercing riveting mechanism being detachably connected to the processing table;

[0012] The car body is fixed by a clamping mechanism and transported to a self-piercing riveting mechanism by a driving mechanism through an advance and retreat plate, where the car body is riveted and fixed by the self-piercing riveting mechanism;

[0013] Through the design of the above structure, not only can the precise movement of a single car body be achieved, but also riveting processing can be performed on multiple positions of the car body at the same time, which greatly improves the processing efficiency and accuracy of the SPR self-piercing riveting equipment and reduces the labor intensity of manual operation. At the same time, multiple car bodies can be selected for riveting processing at the same time according to the size of the car body, which is flexible and convenient to use.

[0014] Furthermore, the driving mechanism includes a first motor, a first screw and a baffle, the first motor and the baffle are both arranged on the bottom surface of the processing table, the first motor is connected to the baffle through the first screw, a first guide groove is provided on the processing table, the first guide groove is located above the first screw, a first booster block is provided on the bottom surface of the advance and retreat plate, the first booster block is connected to the first screw through the first guide groove; the first screw is driven to rotate by the first motor, and then the advance and retreat plate can be driven to move by the first booster block, thereby meeting the movement requirements of the vehicle body, and the first guide groove improves the stability and reliability of the first booster block during movement.

[0015] Furthermore, the processing table is symmetrically provided with first slide grooves on both sides of the first guide groove, and the bottom surface of the advance and retreat plate is symmetrically provided with sliders, which move along the first slide grooves. The advance and retreat plate can be supported by the first slide grooves and the sliders, thereby improving the stability and reliability of the advance and retreat plate during movement.

[0016] Furthermore, the clamping mechanism includes a support table, a turntable, a cantilever and a clamping assembly. The support table is fixed on the advance and retreat plate, the turntable is rotatably connected to the support table, the cantilevers are distributed in a ring shape on the outside of the turntable, and each cantilever is movably connected to a clamping assembly. A driving motor can be installed in the support table to drive the turntable to rotate by the driving motor to achieve synchronous rotation of the cantilever and the clamping assembly. The clamping assembly can move along the cantilever to meet the clamping requirements for car bodies of different sizes. At the same time, the clamping assembly can be installed on the cantilever according to the shape requirements of the car body to meet the riveting processing requirements of car bodies of different sizes.

[0017] Furthermore, the clamping assembly includes a base plate, a column, a lower clamping plate and an upper clamping plate, side plates are symmetrically arranged on both sides of the base plate, the side plates slide along the sides of the cantilever, the cantilever is provided with a second guide groove, a second motor is provided at the end of the cantilever, the second motor is connected to the second screw, the second screw is located in the second guide groove, the base plate is connected to the second screw through a second booster block, the column is arranged on the top surface of the base plate, the lower clamping plate is movably connected to the column through a first telescopic rod, first hydraulic cylinders are symmetrically arranged on both sides of the column, the first hydraulic cylinder is connected to the lower clamping plate through a piston rod, the upper clamping plate is movably connected to the lower clamping plate through a guide rod, and fasteners are provided on the sides of the lower clamping plate. Through the design of the base plate and the side plates, it is possible to improve The high clamping assembly has stability and reliability when moving along the cantilever, the second motor drives the second screw to rotate, and then the second booster block can drive the clamping assembly to move horizontally to meet the clamping requirements of vehicle bodies of different sizes, and the first hydraulic cylinder drives the lower clamping plate to move up and down through the piston rod, so as to meet the clamping requirements of vehicle bodies at different heights. The first telescopic rod improves the stability and reliability of the lower clamping plate and the upper clamping plate when moving, and the upper clamping plate can move up and down along the lower clamping plate through the guide rod. After moving to the required height, the guide rod and the lower clamping plate can be fixedly connected through fasteners to achieve clamping of the vehicle body, thereby improving the stability and reliability during riveting.

[0018] Furthermore, the self-piercing riveting mechanism includes a C-shaped frame, a lower die, a second hydraulic cylinder, a self-piercing riveting assembly and a rivet retracting and releasing mechanism. The C-shaped frame is connected to the processing table through a detachable assembly, the lower die is arranged at the lower part of the C-shaped frame, a boss is arranged at the upper part of the C-shaped frame, the self-piercing riveting assembly is connected to the bottom of the boss and is located directly above the lower die, the second hydraulic cylinder is arranged at the top of the boss, the rivet retracting and releasing mechanism is connected to the C-shaped frame, and a feed pipe and a discharge pipe are respectively arranged on both sides of the boss. The design of the detachable assembly facilitates the installation and disassembly between the self-piercing riveting mechanism and the processing table, improves the flexibility and reliability of the SPR self-piercing riveting equipment during use, drives the rivets in the self-piercing riveting assembly to move downward through the second hydraulic cylinder, so that the upper die cooperates with the lower die, realizes the riveting of the multi-layer plate body of the car body by the rivets, and improves the riveting quality. The rivet retracting and releasing mechanism is conducive to automatic feeding of rivets, and the used material strips can be recycled.

[0019] Furthermore, the detachable component includes a guide bar, a second slide groove and a guide groove. The guide bar is symmetrically arranged on both sides of the bottom of the C-shaped frame, the second slide groove is located on the processing table, and the guide grooves are symmetrically distributed on both sides of the second slide groove. The C-shaped frame matches the second slide groove, the guide bar matches the guide groove, the guide groove is provided with a first fixing hole, and the guide bar is provided with a second fixing hole. The guide bar, the second slide groove and the guide groove improve the stability and reliability when the self-piercing riveting mechanism is connected to the processing table, and the installation and disassembly are convenient and quick.

[0020] Furthermore, the self-piercing riveting assembly includes a fixed cylinder, a feeding cylinder and a guide cylinder. The guide cylinder is connected to the fixed cylinder through the feeding cylinder. The fixed cylinder is connected to the boss. A horizontal channel is provided on the feeding cylinder. An upper mold is movably connected in the feeding cylinder. The upper mold is connected to the second hydraulic cylinder through a piston rod. The feeding cylinder is provided with a transmission assembly. The transmission assembly includes two symmetrically arranged fourth motors. The output shafts of the fourth motors are respectively connected to gear plates. The bottom of the fixed cylinder is located on both sides of the feeding cylinder and tensioning assemblies are respectively provided. The tensioning assembly includes a hanging block, a second telescopic rod, a bracket and a guide roller. The hanging block is connected to the fixed cylinder. One end of the second telescopic rod is connected to the hanging block. The second telescopic rod The other end of the retracted rod is connected to the bracket, and the bracket is connected to the guide roller. The two sides of the guide roller are provided with inclined surfaces; the material belt is driven to move horizontally through the transmission component in the feeding barrel, so that the rivet can be transported to the set position of the horizontal channel, and then the rivet is pressed onto the body through the guide barrel by the upper mold downward pressure, and finally pressed into the body to rivet the multi-layer plate on the body. The fourth motor can drive the material belt to move at a uniform speed through the gear plate, and the tensioning component can ensure that the material belt drives the rivet to be transported horizontally, so that the rivet feeding is smoother. The guide roller can adjust the length through the second telescopic rod, and the inclined surface facilitates the material belt to enter the horizontal channel in the set direction, thereby improving the riveting efficiency.

[0021] Furthermore, the rivet releasing and retracting mechanism includes a fixed frame, a discharge tray and a receiving tray. The discharge tray and the receiving tray are both rotatably connected to the fixed frame via a rotating shaft. A third motor is provided on the fixed frame, and the third motor is connected to the rotating shaft via a gear set. A material belt is wound on the discharge tray, and rivet holes for installing rivets are evenly provided on the material belt. Toothed grooves are evenly provided on both sides of the rivet holes along the length direction of the material belt. The discharge tray and the receiving tray can be driven to rotate respectively by the third motor via the gear set, so that the rivet transportation can be realized while satisfying the recycling of the material belt.

[0022] The processing method of the SPR self-piercing riveting equipment for the integrated die-casting vehicle body as described above is characterized by comprising the following steps:

[0023] S1. Clamping mechanism installation

[0024] a. Firstly, a suitable support platform and turntable are processed, the turntable is rotatably connected to the top of the support platform, and a cantilever with a second guide groove is installed in a ring shape on the outer side of the turntable;

[0025] b. Then, install a second motor and a second screw on each cantilever, so that the second screw is located in the second guide groove;

[0026] c. Then assemble the clamping assembly and install the clamping assembly on each cantilever, so that the clamping assembly is connected to the second screw rod through the second booster block;

[0027] S2. Installation of advance and retreat plate

[0028] a. First, install the processed clamping mechanism on the top surface of the advance and retreat plate to ensure that there is no collision between two adjacent clamping mechanisms when they rotate;

[0029] b. Then install the first boost block and the slider on the bottom surface of the advance and retreat plate, so that the slider is embedded in the first slide groove of the processing table, and the first boost block passes through the first guide groove on the processing table;

[0030] c. Then, a first motor and a first screw are installed on the bottom surface of the processing table, so that the first boosting block is connected to the first screw;

[0031] S3. Installation of self-piercing riveting mechanism

[0032] a. First, install the lower mold at the bottom of the C-shaped frame, keep the lower mold vertical, and install guide strips symmetrically on both sides of the lower part of the C-shaped frame, and evenly open the second fixing holes along the guide strips;

[0033] b. Then install the second hydraulic cylinder on the upper boss of the C-shaped frame, install the self-piercing rivet assembly along the bottom of the boss, install the transmission assembly on the feeding cylinder of the self-piercing rivet assembly, and install the tensioning assembly along both sides of the fixing cylinder of the self-piercing rivet assembly;

[0034] c. Then install the rivet retracting and releasing mechanism on the C-shaped frame, and install the feed pipe and the discharge pipe on both sides of the boss respectively. Wind the material belt with rivets on the discharge tray of the rivet retracting and releasing mechanism, pass the material belt through the feed pipe and enter the feed barrel through the tensioning assembly on one side. Under the action of the transmission assembly, the material belt moves horizontally along the feed barrel. After the rivet is pressed with the car body, the material belt is sent out from the tensioning assembly on the other side and enters the receiving tray of the rivet retracting and releasing mechanism through the discharge pipe;

[0035] S4. Self-piercing riveting mechanism assembly

[0036] Install the installed self-piercing riveting mechanism on the processing table, move the C-shaped frame along the second slide groove, and move the guide bar along the guide groove until the C-shaped frame is fully pushed in, and then fix the guide bar and the guide groove by tightening screws to achieve fixed cooperation between the self-piercing riveting mechanism and the processing table;

[0037] S5, body processing

[0038] a. First, clamp the car body on the clamping mechanism, and use the driving mechanism to transport the advance and retreat plate to the side close to the self-piercing riveting mechanism;

[0039] b. Then, according to the requirements of the body processing, the body is driven to rotate to the processing position by rotating the clamping mechanism, and the self-piercing riveting mechanism is started to achieve riveting and fixing of the body.

[0040] The processing method has simple steps and can meet not only the riveting processing of a single car body, but also the simultaneous riveting processing of multiple parts. It is flexible and convenient to use, greatly reduces the labor intensity of manual operation, and improves the riveting quality.

[0041] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0042] 1. The present invention can not only realize the precise movement of a single car body, but also can perform riveting processing on multiple positions of the car body at the same time, which greatly improves the processing efficiency and precision of the SPR self-piercing riveting equipment, reduces the labor intensity of manual operation, and can select multiple car bodies for riveting processing at the same time according to the size of the car body, which is flexible and convenient to use.

[0043] 2. The clamping assembly can move along the cantilever to meet the clamping requirements for car bodies of different sizes. At the same time, the clamping assembly can be installed on the cantilever according to the shape requirements of the car body to meet the riveting processing requirements of car bodies of different sizes.

[0044] 3. Through the design of the bottom plate and the side plate, the stability and reliability of the clamping assembly when moving along the cantilever can be improved. The second motor drives the second screw to rotate, and then the clamping assembly can be driven to move horizontally through the second booster block to meet the clamping requirements of vehicle bodies of different sizes. The lower clamping plate is driven up and down by the first hydraulic cylinder through the piston rod, so as to meet the clamping requirements of vehicle bodies at different heights. The first telescopic rod improves the stability and reliability of the lower clamping plate and the upper clamping plate when moving. The upper clamping plate can move up and down along the lower clamping plate through the guide rod. After moving to the required height, the guide rod and the lower clamping plate can be fixedly connected through fasteners to achieve clamping of the vehicle body, thereby improving the stability and reliability during riveting.

[0045] 4. The design of detachable components facilitates the installation and disassembly between the self-piercing riveting mechanism and the processing table, improves the flexibility and reliability of the SPR self-piercing riveting equipment when in use, and drives the rivets in the self-piercing riveting assembly to move downward through the second hydraulic cylinder, so that the upper die and the lower die cooperate to achieve riveting of the multi-layer panels of the car body with rivets, thereby improving the riveting quality. The rivet retracting and releasing mechanism is conducive to the automatic loading of rivets, and the used material strips can be recycled.

[0046] 5. This processing method has simple steps and can not only meet the riveting processing of a single car body, but also meet the simultaneous riveting processing of multiple parts. It is flexible and convenient to use, greatly reducing the labor intensity of manual operation and improving the riveting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below in conjunction with the accompanying drawings:

[0048] Figure 1It is a rendering of the SPR self-piercing riveting device in the SPR self-piercing riveting device and processing method of the integrated die-casting vehicle body of the present invention;

[0049] Figure 2 for Figure 1 Structural schematic diagram of the middle A direction;

[0050] Figure 3 It is a structural schematic diagram of the processing table in the present invention;

[0051] Figure 4 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0052] Figure 5 It is a schematic diagram of the connection between the clamping assembly and the cantilever in the present invention;

[0053] Figure 6 It is a structural schematic diagram of the self-piercing riveting mechanism in the present invention;

[0054] Figure 7 for Figure 6 Schematic diagram of the structure in the B direction;

[0055] Figure 8 It is a structural schematic diagram of the self-piercing riveting assembly in the present invention;

[0056] Fig. 9 It is a structural schematic diagram of the transmission assembly in the present invention;

[0057] Fig.10 The figure is a flow chart of the SPR self-piercing riveting equipment processing method in the present invention.

[0058] In the figure: 1-processing table; 2-advance and retraction plate; 3-clamping mechanism; 4-self-piercing riveting mechanism; 5-control box; 6-slider; 7-first motor; 8-baffle; 9-first screw; 10-first booster block; 11-first slide groove; 12-first guide groove; 13-second slide groove; 14-guide groove; 15-first fixing hole; 16-support table; 17-turntable; 18-cantilever; 19-clamping assembly; 20-second guide groove; 21-second motor; 22-second screw; 23-side plate; 24-bottom plate; 25-second booster block; 26-column; 27-lower clamping plate; 28-upper clamping plate; 29-first telescopic rod; 30-first hydraulic cylinder; 31- Guide rod; 32-C-shaped frame; 33-lower die; 34-guide strip; 35-second fixing hole; 36-boss; 37-second hydraulic cylinder; 38-self-piercing rivet assembly; 39-feeding pipe; 40-discharging pipe; 41-rivet retracting and releasing mechanism; 42-fixed frame; 43-discharging tray; 44-receiving tray; 45-third motor; 46-gear set; 47-fixing cylinder; 48-feeding cylinder; 49-guide cylinder; 50-horizontal channel; 51-material belt; 52-suspension block; 53-second telescopic rod; 54-bracket; 55-guide roller; 56-inclined surface; 57-transmission assembly; 58-fourth motor; 59-gear plate; 60-rivet hole; 61-tooth groove. DETAILED DESCRIPTION

[0059] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0060] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0062] like Figures 1 to 9 As shown, the SPR self-piercing riveting equipment for the integrated die-casting vehicle body of the present invention comprises a processing table 1, an advance and retreat plate 2, at least one clamping mechanism 3 and at least one self-piercing riveting mechanism 4. A control box 5 is provided on the bottom surface of the processing table 1.

[0063] The advance and retreat plate 2 is connected to the processing table 1 through a driving mechanism; the driving mechanism includes a first motor 7, a first screw 9 and a baffle 8, the first motor 7 and the baffle 8 are both arranged on the bottom surface of the processing table 1, the first motor 7 is connected to the baffle 8 through the first screw 9, a first guide groove 12 is provided on the processing table 1, the first guide groove 12 is located above the first screw 9, a first booster block 10 is provided on the bottom surface of the advance and retreat plate 2, the first booster block 10 passes through the first guide groove 12 and is connected to the first screw 9; the first screw 9 is driven to rotate by the first motor 7, and then the advance and retreat plate 2 can be driven to move by the first booster block 10, so as to meet the movement requirements of the vehicle body, and the first guide groove 12 improves the stability and reliability of the first booster block 10 when moving.

[0064] The processing table 1 is symmetrically provided with first slide grooves 11 on both sides of the first guide groove 12, and the bottom surface of the advance and retreat plate 2 is symmetrically provided with sliders 6. The sliders 6 move along the first slide grooves 11. The advance and retreat plate 2 can be supported by the first slide grooves 11 and the sliders 6, thereby improving the stability and reliability of the advance and retreat plate 2 when moving.

[0065] The clamping mechanism 3 is arranged on the top surface of the advance and retreat plate 2; the clamping mechanism 3 includes a support table 16, a turntable 17, a cantilever 18 and a clamping assembly 19. The support table 16 is fixed on the advance and retreat plate 2, the turntable 17 is rotatably connected to the support table 16, the cantilever 18 is distributed in a ring shape on the outside of the turntable 17, and each cantilever 18 is movably connected with a clamping assembly 19. A driving motor can be installed in the support table 16, and the turntable 17 is driven by the driving motor to rotate, so as to realize the synchronous rotation of the cantilever 18 and the clamping assembly 19. The clamping assembly 19 can move along the cantilever 18 to meet the clamping requirements for car bodies of different sizes. At the same time, the clamping assembly 19 can be installed on the cantilever 18 according to the shape requirements of the car body to meet the riveting processing requirements of car bodies of different sizes.

[0066] The clamping assembly 19 includes a bottom plate 24, a column 26, a lower clamping plate 27 and an upper clamping plate 28. Side plates 23 are symmetrically arranged on both sides of the bottom plate 24. The side plates 23 slide along the sides of the cantilever 18. The cantilever 18 is provided with a second guide groove 20. A second motor 21 is provided at the end of the cantilever 18. The second motor 21 is connected to the second screw 22. The second screw 22 is located in the second guide groove 20. The bottom plate 24 is connected to the second screw 22 through a second booster block 25. The column 26 is arranged on the top surface of the bottom plate 24. The lower clamping plate 27 is movably connected to the column 26 through a first telescopic rod 29. First hydraulic cylinders 30 are symmetrically arranged on both sides of the column 26. The first hydraulic cylinder 30 is connected to the lower clamping plate 27 through a piston rod. The upper clamping plate 28 is movably connected to the lower clamping plate 27 through a guide rod 31. Fasteners are provided on the sides of the lower clamping plate 27. The design of the bottom plate 24 and the side plate 23 can improve the stability and reliability of the clamping assembly 19 when it moves along the cantilever 18. The second motor 21 drives the second screw 22 to rotate, and then the second booster block 25 can drive the clamping assembly 19 to move horizontally to meet the clamping requirements of vehicle bodies of different sizes. The lower clamping plate 27 is driven up and down by the first hydraulic cylinder 30 through the piston rod, so as to meet the clamping requirements of vehicle bodies at different heights. The first telescopic rod 29 improves the stability and reliability of the lower clamping plate 27 and the upper clamping plate 28 when they move. The upper clamping plate 28 can move up and down along the lower clamping plate 27 through the guide rod 31. After moving to the required height, the guide rod 31 and the lower clamping plate 27 can be fixedly connected by fasteners to achieve clamping of the vehicle body, thereby improving the stability and reliability during riveting.

[0067] The self-piercing riveting mechanism 4 is detachably connected to the processing table 1; the self-piercing riveting mechanism 4 includes a C-shaped frame 32, a lower die 33, a second hydraulic cylinder 37, a self-piercing riveting assembly 38 and a rivet retracting mechanism 41, the C-shaped frame 32 is connected to the processing table 1 through a detachable assembly, the lower die 33 is arranged at the lower part of the C-shaped frame 32, a boss 36 is arranged at the upper part of the C-shaped frame 32, the self-piercing riveting assembly 38 is connected to the bottom of the boss 36 and is located directly above the lower die 33, the second hydraulic cylinder 37 is arranged at the top of the boss 36, and the rivet retracting mechanism 41 is connected to the C-shaped frame 3 2. A feed pipe 39 and a discharge pipe 40 are respectively provided on both sides of the boss 36. The design of the detachable assembly facilitates the installation and disassembly between the self-piercing riveting mechanism 4 and the processing table 1, thereby improving the flexibility and reliability of the SPR self-piercing riveting equipment when in use. The rivets in the self-piercing riveting assembly 38 are driven downward by the second hydraulic cylinder 37, so that the upper die and the lower die 33 cooperate to achieve riveting of the multi-layer plate body of the vehicle body by the rivets, thereby improving the riveting quality. The rivet retracting and releasing mechanism 41 is conducive to the automatic feeding of the rivets, and the used material belt 51 can be recycled.

[0068] The detachable components include a guide bar 34, a second slide groove 13 and a guide groove 14. The guide bar 34 is symmetrically arranged on both sides of the bottom of the C-shaped frame 32. The second slide groove 13 is located on the processing table 1. The guide grooves 14 are symmetrically distributed on both sides of the second slide groove 13. The C-shaped frame 32 matches the second slide groove 13, and the guide bar 34 matches the guide groove 14. The guide groove 14 is provided with a first fixing hole 15, and the guide bar 34 is provided with a second fixing hole 35. The guide bar 34, the second slide groove 13 and the guide groove 14 improve the stability and reliability of the self-piercing riveting mechanism 4 when connected to the processing table 1, and the installation and disassembly are convenient and quick.

[0069] The self-piercing riveting assembly 38 includes a fixed cylinder 47, a feeding cylinder 48 and a guide cylinder 49. The guide cylinder 49 is connected to the fixed cylinder 47 through the feeding cylinder 48. The fixed cylinder 47 is connected to the boss 36. A horizontal channel 50 is provided on the feeding cylinder 48. An upper mold is movably connected in the feeding cylinder 48. The upper mold is connected to the second hydraulic cylinder 37 through a piston rod. The feeding cylinder 48 is provided with a transmission assembly 57. The transmission assembly 57 includes two symmetrically arranged fourth motors 58. The output shafts of the fourth motor 58 are respectively connected to gear plates 59. The bottom of the fixed cylinder 47 is located on both sides of the feeding cylinder 48 and tensioning assemblies are respectively provided. The tensioning assembly includes a hanging block 52, a second telescopic rod 53, a bracket 54 and a guide roller 55. The hanging block 52 is connected to the fixed cylinder 47. One end of the second telescopic rod 53 is connected to the hanging Block 52, the other end of the second telescopic rod 53 is connected to the bracket 54, the bracket 54 is connected to the guide roller 55, and the two sides of the guide roller 55 are provided with inclined surfaces 56; the transmission component 57 in the feeding cylinder 48 drives the material belt 51 to move horizontally, so that the rivet can be transported to the set position of the horizontal channel 50, and then the rivet is pressed against the car body through the guide cylinder 49 by the upper mold downward pressure, and finally pressed into the car body to rivet the multi-layer plate on the car body, the fourth motor 58 can drive the material belt 51 to move at a uniform speed through the gear plate 59, the tensioning component can ensure that the material belt 51 drives the rivet to be transported horizontally, so that the rivet feeding is smoother, the guide roller 55 can adjust the length through the second telescopic rod 53, and the inclined surface 56 facilitates the material belt 51 to enter the horizontal channel 50 in the set direction, thereby improving the riveting efficiency.

[0070] The rivet taking-up and releasing mechanism 41 comprises a fixed frame 42, a discharge tray 43 and a receiving tray 44. The discharge tray 43 and the receiving tray 44 are both rotatably connected to the fixed frame 42 via a rotating shaft. A third motor 45 is provided on the fixed frame 42. The third motor 45 is connected to the rotating shaft via a gear set 46. A material belt 51 is wound on the discharge tray 43. Rivet holes 60 for installing rivets are evenly provided on the material belt 51. Toothed grooves 61 are evenly provided on both sides of the rivet holes 60 along the length direction of the material belt 51. The discharge tray 43 and the receiving tray 44 can be driven to rotate respectively by the third motor 45 via the gear set 46, so that the rivet conveying can be realized while satisfying the recycling of the material belt 51.

[0071] The car body is fixed by the clamping mechanism 3 and transported by the driving mechanism through the advance and retreat plate 2 to the self-piercing riveting mechanism 4, where the car body is riveted and fixed by the self-piercing riveting mechanism 4;

[0072] Through the design of the above structure, not only can the precise movement of a single car body be achieved, but also riveting processing can be performed on multiple positions of the car body at the same time, which greatly improves the processing efficiency and accuracy of the SPR self-piercing riveting equipment and reduces the labor intensity of manual operation. At the same time, multiple car bodies can be selected for riveting processing at the same time according to the size of the car body, which is flexible and convenient to use.

[0073] like Fig.10 As shown, the processing method of the SPR self-piercing riveting equipment of the integrated die-casting vehicle body of the present invention comprises the following steps:

[0074] S1. Installation of clamping mechanism 3

[0075] a. Firstly, a suitable support platform 16 and a turntable 17 are processed, the turntable 17 is rotatably connected to the top of the support platform 16, and a cantilever 18 with a second guide groove 20 is installed in a ring shape on the outer side of the turntable 17;

[0076] b. Then, install the second motor 21 and the second screw rod 22 on each cantilever 18 so that the second screw rod 22 is located in the second guide groove 20;

[0077] c. Then assemble the clamping assembly 19 and install the clamping assembly 19 on each cantilever 18, so that the clamping assembly 19 is connected to the second screw rod 22 through the second boosting block 25;

[0078] S2, installation of advance and retreat plate 2

[0079] a. First, install the processed clamping mechanism 3 on the top surface of the advance and retreat plate 2 to ensure that there is no collision between two adjacent clamping mechanisms 3 when they rotate;

[0080] b. Then install the first boosting block 10 and the sliding block 6 on the bottom surface of the advance and retreat plate 2, so that the sliding block 6 is embedded in the first slide groove 11 of the processing table 1, and the first boosting block 10 passes through the first guide groove 12 on the processing table 1;

[0081] c. Then, the first motor 7 and the first screw 9 are installed on the bottom surface of the processing table 1, so that the first boosting block 10 is connected to the first screw 9;

[0082] S3, installation of self-piercing riveting mechanism 4

[0083] a. First, install the lower mold 33 at the lower part of the C-shaped frame 32, keep the lower mold 33 vertical, and install the guide strips 34 symmetrically along the two sides of the lower part of the C-shaped frame 32, and evenly open the second fixing holes 35 on the guide strips 34;

[0084] b. Then install the second hydraulic cylinder 37 on the upper boss 36 of the C-shaped frame 32, install the self-piercing rivet assembly 38 along the bottom of the boss 36, install the transmission assembly 57 on the feeding cylinder 48 of the self-piercing rivet assembly 38, and install the tensioning assembly along both sides of the fixing cylinder 47 of the self-piercing rivet assembly 38;

[0085] c. Then, a rivet collecting and releasing mechanism 41 is installed on the C-shaped frame 32, and a feed pipe 39 and a discharge pipe 40 are installed along both sides of the boss 36 respectively. A material belt 51 with rivets is wound on the discharge tray 43 of the rivet collecting and releasing mechanism 41, and the material belt 51 passes through the feed pipe 39 and enters the feed cylinder 48 through a tensioning assembly on one side. Under the action of the transmission assembly 57, the material belt 51 moves horizontally along the feed cylinder 48. After the rivet is pressed against the vehicle body, the material belt 51 is sent out from the tensioning assembly on the other side and enters the receiving tray 44 of the rivet collecting and releasing mechanism 41 through the discharge pipe 40;

[0086] S4, self-piercing riveting mechanism 4 assembly

[0087] Install the installed self-piercing riveting mechanism 4 on the processing table 1, move the C-shaped frame 32 along the second slide groove 13, and move the guide bar 34 along the guide groove 14 until the C-shaped frame 32 is fully pushed in, and then fix the guide bar 34 and the guide groove 14 by tightening screws to achieve fixed cooperation between the self-piercing riveting mechanism 4 and the processing table 1;

[0088] S5, body processing

[0089] a. First, clamp the car body on the clamping mechanism 3, and transport the advance and retreat plate 2 to the side close to the self-piercing riveting mechanism 4 through the driving mechanism;

[0090] b. Then, according to the requirements of the body processing, the body is driven to rotate to the processing position by rotating the clamping mechanism 3, and the self-piercing riveting mechanism 4 is started to achieve riveting and fixing of the body.

[0091] The processing method has simple steps and can meet not only the riveting processing of a single car body, but also the simultaneous riveting processing of multiple parts. It is flexible and convenient to use, greatly reduces the labor intensity of manual operation, and improves the riveting quality.

[0092] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. SPR self-piercing riveting equipment for integrated die-casting car bodies, characterized by: include Processing table; An advance and retreat plate, the advance and retreat plate being connected to the processing table through a driving mechanism; At least one clamping mechanism, the clamping mechanism is arranged on the top surface of the advance and retreat plate; and at least one self-piercing riveting mechanism, the self-piercing riveting mechanism being detachably connected to the processing table; The vehicle body is fixed by the clamping mechanism and transported to the self-piercing riveting mechanism by the driving mechanism through the advancing and retreating plate, and the vehicle body is riveted and fixed by the self-piercing riveting mechanism.

2. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 1, characterized in that: The driving mechanism includes a first motor, a first screw and a baffle, the first motor and the baffle are both arranged on the bottom surface of the processing table, the first motor is connected to the baffle through the first screw, a first guide groove is provided on the processing table, the first guide groove is located above the first screw, and a first booster block is provided on the bottom surface of the advance and retreat plate, and the first booster block is connected to the first screw through the first guide groove.

3. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 2, characterized in that: The processing table is provided with first slide grooves symmetrically on both sides of the first guide groove, and the bottom surface of the advance and retreat plate is provided with sliding blocks symmetrically, and the sliding blocks move along the first slide grooves.

4. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 1, characterized in that: The clamping mechanism includes a support table, a turntable, a cantilever and a clamping assembly. The support table is fixed on the advance and retreat plate, the turntable is rotatably connected to the support table, the cantilever is distributed in a ring shape on the outside of the turntable, and each cantilever is movably connected to the clamping assembly.

5. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 4, characterized in that: The clamping assembly includes a base plate, a column, a lower clamping plate and an upper clamping plate, side plates are symmetrically provided on both sides of the base plate, the side plates slide along the sides of the cantilever, the cantilever is provided with a second guide groove, a second motor is provided at the end of the cantilever, the second motor is connected to the second screw, the second screw is located in the second guide groove, the base plate is connected to the second screw through a second booster block, the column is provided on the top surface of the base plate, the lower clamping plate is movably connected to the column through a first telescopic rod, first hydraulic cylinders are symmetrically provided on both sides of the column, the first hydraulic cylinder is connected to the lower clamping plate through a piston rod, the upper clamping plate is movably connected to the lower clamping plate through a guide rod, and fasteners are provided on the sides of the lower clamping plate.

6. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 1, characterized in that: The self-piercing riveting mechanism includes a C-shaped frame, a lower die, a second hydraulic cylinder, a self-piercing riveting assembly and a rivet retracting and releasing mechanism. The C-shaped frame is connected to the processing table through a detachable assembly, the lower die is arranged at the lower part of the C-shaped frame, a boss is arranged at the upper part of the C-shaped frame, the self-piercing riveting assembly is connected to the bottom of the boss and is located directly above the lower die, the second hydraulic cylinder is arranged at the top of the boss, the rivet retracting and releasing mechanism is connected to the C-shaped frame, and a feed pipe and a discharge pipe are respectively arranged on both sides of the boss.

7. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 6, characterized in that: The detachable component includes a guide bar, a second slide groove and a guide groove, the guide bar is symmetrically arranged on both sides of the bottom of the C-shaped frame, the second slide groove is located on the processing table, the guide grooves are symmetrically distributed on both sides of the second slide groove, the C-shaped frame matches the second slide groove, the guide bar matches the guide groove, the guide groove is provided with a first fixing hole, and the guide bar is provided with a second fixing hole.

8. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 6, characterized in that: The self-piercing riveting assembly includes a fixed cylinder, a feeding cylinder and a guide cylinder. The guide cylinder is connected to the fixed cylinder through the feeding cylinder. The fixed cylinder is connected to the boss. A horizontal channel is provided on the feeding cylinder. An upper mold is movably connected in the feeding cylinder. The upper mold is connected to the second hydraulic cylinder through a piston rod. The feeding cylinder is provided with a transmission assembly. The transmission assembly includes two symmetrically arranged fourth motors. The output shafts of the fourth motors are respectively connected to gear plates. The bottom of the fixed cylinder is located on both sides of the feeding cylinder and tensioning assemblies are respectively provided. The tensioning assembly includes a hanging block, a second telescopic rod, a bracket and a guide roller. The hanging block is connected to the fixed cylinder, one end of the second telescopic rod is connected to the hanging block, and the other end of the second telescopic rod is connected to the bracket. The bracket is connected to the guide roller, and inclined surfaces are provided on both sides of the guide roller.

9. The SPR self-piercing riveting equipment for the integrated die-casting vehicle body according to claim 6, characterized in that: The rivet retracting and releasing mechanism includes a fixed frame, a material discharge tray and a material receiving tray. The material discharge tray and the material receiving tray are both rotatably connected to the fixed frame via a rotating shaft. The fixed frame is provided with a third motor, and the third motor is connected to the rotating shaft via a gear set. A material belt is wound on the material discharge tray, and rivet holes for installing rivets are evenly arranged on the material belt, and toothed grooves are evenly arranged on both sides of the rivet holes along the length direction of the material belt.

10. The processing method of the SPR self-piercing riveting equipment of the integrated die-casting vehicle body according to any one of claims 1 to 9, characterized in that The following steps are involved: S1. Clamping mechanism installation a. Firstly, a suitable support platform and turntable are processed, the turntable is rotatably connected to the top of the support platform, and a cantilever with a second guide groove is installed in a ring shape on the outer side of the turntable; b. Then, install a second motor and a second screw on each cantilever, so that the second screw is located in the second guide groove; c. Then assemble the clamping assembly and install the clamping assembly on each cantilever, so that the clamping assembly is connected to the second screw rod through the second booster block; S2. Installation of advance and retreat plate a. First, install the processed clamping mechanism on the top surface of the advance and retreat plate to ensure that there is no collision between two adjacent clamping mechanisms when they rotate; b. Then install the first boost block and the slider on the bottom surface of the advance and retreat plate, so that the slider is embedded in the first slide groove of the processing table, and the first boost block passes through the first guide groove on the processing table; c. Then, a first motor and a first screw are installed on the bottom surface of the processing table, so that the first boosting block is connected to the first screw; S3. Installation of self-piercing riveting mechanism a. First, install the lower mold at the bottom of the C-shaped frame, keep the lower mold vertical, and install guide strips symmetrically on both sides of the lower part of the C-shaped frame, and evenly open the second fixing holes along the guide strips; b. Then install the second hydraulic cylinder on the upper boss of the C-shaped frame, install the self-piercing rivet assembly along the bottom of the boss, install the transmission assembly on the feeding cylinder of the self-piercing rivet assembly, and install the tensioning assembly along both sides of the fixing cylinder of the self-piercing rivet assembly; c. Then install the rivet retracting and releasing mechanism on the C-shaped frame, and install the feed pipe and the discharge pipe on both sides of the boss respectively. Wind the material belt with rivets on the discharge tray of the rivet retracting and releasing mechanism, pass the material belt through the feed pipe and enter the feed barrel through the tensioning assembly on one side. Under the action of the transmission assembly, the material belt moves horizontally along the feed barrel. After the rivet is pressed with the car body, the material belt is sent out from the tensioning assembly on the other side and enters the receiving tray of the rivet retracting and releasing mechanism through the discharge pipe; S4. Self-piercing riveting mechanism assembly Install the installed self-piercing riveting mechanism on the processing table, move the C-shaped frame along the second slide groove, and move the guide bar along the guide groove until the C-shaped frame is fully pushed in, and then fix the guide bar and the guide groove by tightening screws to achieve fixed cooperation between the self-piercing riveting mechanism and the processing table; S5, body processing a. First, clamp the car body on the clamping mechanism, and use the driving mechanism to transport the advance and retreat plate to the side close to the self-piercing riveting mechanism; b. Then, according to the requirements of the body processing, the body is driven to rotate to the processing position by rotating the clamping mechanism, and the self-piercing riveting mechanism is started to achieve riveting and fixing of the body.

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