Riveting device for automobile assembly

Abstract

The invention relates to the technical field of riveting devices, in particular to a riveting device for an automobile assembly, which comprises a workbench and a vertically arranged rack, and is characterized in that a riveting machine head is arranged on the front side surface of the rack, a pressing rod is arranged in the riveting machine head along the vertical direction, a jig is arranged on the workbench, the jig is used for clamping a workpiece, and the pressing rod is used for pressing the workpiece. An oil injection assembly is arranged on the right side of the outer surface of the pressing rod, and when the pressing rod presses downwards to extrude the rivet, the oil injection assembly injects oil at the same time. According to the riveting device, the jig, the oil spraying assembly and the riveting machine head are arranged, when the riveting device is used and the riveting machine head controls a pressing rod to press and extrude a rivet, the oil spraying assembly sprays oil at the same time, lubricating oil is sprayed to the rivet and the side wall of a rivet hole, so that the oil permeates into the space between the rivet and the rivet hole in a workpiece, and when the rivet is pressed to move downwards, the oil is sprayed to the side wall of the rivet hole; the friction force between the rivet and the rivet hole is reduced, and the workpiece is prevented from being excessively damaged to affect the riveting quality and the service life of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of riveting devices, and in particular to a riveting device for automobile components. Background Art

[0002] Riveting machine is a new type of riveting equipment developed based on the principle of cold rolling, which refers to mechanical equipment that can rivet objects together with rivets. Riveting machines mainly rely on rotation and pressure to complete assembly. They are mainly used in occasions where rivets (hollow rivets, hollow rivets, solid rivets, etc.) are required. Common models include pneumatic, hydraulic and electric, single-head and double-head models. The most common types are automatic riveting machines.

[0003] In the production process of automobile components, riveting is a commonly used connection process. However, existing riveting devices have some shortcomings. On the one hand, during the riveting process, due to the large friction between the rivet and the rivet hole, it is easy to cause wear of the rivet and the rivet hole, affecting the riveting quality and the service life of the workpiece. In order to reduce friction, it is usually necessary to lubricate the rivet or rivet hole before riveting, but the existing lubrication methods are often not accurate and efficient enough, and it is impossible to accurately spray the lubricating oil into the rivet hole while riveting. On the other hand, after the riveting is completed, the operation of removing the workpiece from the fixture is not convenient enough, and it is often necessary to manually disassemble it with the help of additional tools, which not only increases the labor intensity, but may also cause damage to the workpiece due to improper operation, affecting production efficiency and product quality.

[0004] Through searching, Chinese patent announcement number CN217252558U discloses a riveting manufacturing equipment for special-shaped lock parts of automobile door locks, including a protective box, a moving device is provided on the side wall of the protective box, a lifting device is provided in the middle of the protective box, and a material receiving device is provided in the middle of the protective box. The material receiving device includes a material receiving component and an extraction component, and the material receiving component is arranged below the extraction component. The beneficial effects of the utility model are: when the riveting manufacturing is carried out, the electric fan is working, and the material residues on the workbench can be extracted into the material receiving box for unified recycling, and when the riveting manufacturing is carried out, lubricating oil can be sprayed at any time to facilitate the riveting manufacturing, and the use of a push rod can facilitate the movement of the protective box, and the push rod can also be placed in the placement groove for hiding, thereby reducing the floor space and facilitating use.

[0005] The above scheme has the problems that the injection timing of the lubricating oil spray is not easy to control and the operation of removing the riveted parts from the fixture is not convenient enough, and manual disassembly with the help of additional tools is often required, which not only increases the labor intensity, but may also cause damage to the workpiece due to improper operation, affecting production efficiency and product quality. Summary of the invention

[0006] In order to solve the problem of high friction between rivets and riveting holes in the prior art, the present application provides a riveting device for automobile components.

[0007] The present application provides a riveting device for automobile components, which adopts the following technical solution: it includes a workbench and a vertically arranged frame, and is characterized in that a riveting head is arranged on the front side of the frame, a pressure rod is arranged in the vertical direction inside the riveting head, a fixture is arranged on the workbench, the fixture is used to clamp the workpiece, and an oil injection assembly is arranged on the right side of the outer surface of the pressure rod. When the pressure rod presses down to extrude the rivet, the oil injection assembly sprays oil at the same time.

[0008] Optionally, the oil injection assembly includes an adapter block fixedly arranged with a pressure rod, a hose is connected to the rear side of the adapter block, the other end of the hose is connected to a pressure oil tank, the pressure oil tank can continuously provide lubricating oil of a set constant pressure, a pressure cylinder is fixedly arranged on the lower end face of the adapter block, both the hose and the pressure cylinder are connected to a accommodating cavity opened inside the adapter block, an inner tube is sleeved inside the pressure cylinder, a first one-way valve is fixedly arranged on the upper end face of the inner tube, an oil injection nozzle is fixedly arranged on the bottom of the outer surface of the inner tube, the pressure oil tank is connected to the oil injection nozzle through the hose, the adapter block, the pressure cylinder and the inner tube in sequence, and a first return spring is arranged in the pressure cylinder above the inner tube; the opening pressure of the first one-way valve is greater than the set pressure of the pressure oil tank.

[0009] Optionally, a second one-way valve is fixedly provided at the junction of the pressure cylinder and the adapter block to connect the interior of the pressure cylinder with the accommodating chamber of the adapter block, and the opening pressure of the second one-way valve is less than the set pressure of the pressure oil tank.

[0010] Optionally, the jig includes a frame, a supporting box is fixedly provided on the lower end surface of the frame, and a through hole compatible with the interior of the frame is opened on the supporting box at a position corresponding to the frame; the lower end surface of the supporting box is fixedly provided to the workbench, a push plate is slidingly provided in the frame along the up and down directions, a guide rod is fixedly provided on the lower end surface of the push plate, the bottom end of the guide rod is sleeved in a sleeve fixedly provided on the upper end surface of the workbench, a second return spring is fixedly provided between the bottom end of the guide rod and the workbench, the second return spring always pushes the guide rod to move upward, and a limit plate is fixedly provided on the outer surface of the guide rod.

[0011] Optionally, an L-plate is provided on the upper end surface of the workbench inside the supporting box for sliding along the left and right directions, a control plate is fixedly provided at the end of the horizontal part of the L-plate, a limiting hole is provided inside the control plate, a first inclined surface is provided at the left end of the control plate, and a second inclined surface is provided at the right end of the control plate; the guide rod is located in the limiting hole of the control plate, and the limiting plate is located below the control plate; the area of ​​the left part of the limiting hole is smaller than the horizontal cross-sectional area of ​​the limiting plate, and the right part of the limiting hole is larger than the horizontal cross-sectional area of ​​the limiting plate; a first trigger rod is fixedly provided on the left side of the outer surface of the pressure rod, and a second trigger rod is fixedly provided on the right side of the outer surface of the pressure rod; the bottom end of the first trigger rod moves downward and drives the control plate to move to the right through cooperation with the first inclined surface; the bottom end of the second trigger rod moves upward and drives the control plate to move to the left through cooperation with the second inclined surface.

[0012] Optionally, the right part of the limiting hole is a trapezoidal hole that is larger on the right and smaller on the left, and the left part of the limiting hole is a rectangular hole connected to the trapezoidal hole; the area of ​​the trapezoidal hole is smaller than the horizontal cross-sectional area of ​​the limiting plate, and the area of ​​the rectangular hole is larger than the horizontal cross-sectional area of ​​the limiting plate.

[0013] Optionally, the bottom end of the first trigger rod is provided with a first driving surface adapted to the first inclined surface; a driving block is fixedly provided on the left side of the bottom end of the second trigger rod, and the upper end surface of the driving block is provided with a second driving surface adapted to the second inclined surface.

[0014] Optionally, a recovery hole is provided on the upper end surface of the push plate at a position corresponding to the guide rod, and the recovery hole extends downward into the interior of the guide rod. A piston is slidably arranged in the recovery hole along the up and down directions, and a fixing rod is radially fixedly arranged on the lower end surface of the piston through the piston rod, and the fixing rod passes through the guide rod to the left and is fixed to the frame; a sliding hole matching the fixing rod is provided on the outer surface of the guide rod along the up and down directions, and a sealing plate is fixedly arranged on the guide rod located in the recovery hole, and the outer side surface of the sealing plate fits with the inner side wall of the recovery hole; a third one-way valve connecting the space above the piston and the space below the piston is installed on the upper end surface of the piston; an oil drain pipe connected to the space below the piston is fixedly arranged on the right side of the outer surface of the guide rod.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. The present invention provides a jig, an oil spraying assembly and a riveting machine head. When the device is used, when the riveting machine head controls the pressure rod to press down and extrude the rivet, the oil spraying assembly sprays oil at the same time, spraying the lubricating oil on the rivet and the side wall of the rivet hole, so that the oil penetrates between the rivet and the rivet hole on the workpiece. When the rivet moves downward under pressure, the friction between the rivet and the rivet hole is reduced, thereby avoiding excessive damage to the workpiece and affecting the riveting quality and the service life of the workpiece.

[0017] 2. The present invention is provided with a pressure oil tank, a transfer block, a pressure cylinder, an inner tube and an oil spray nozzle. When the device is used, the riveting machine head controls the pressure rod to press down to drive the transfer block and the pressure cylinder to move downward, and the pressure cylinder drives the inner tube to move downward. When the bottom end of the inner tube contacts the workpiece, the inner tube starts to move into the pressure cylinder, so that the top end of the inner tube compresses the pressure oil in the pressure cylinder, and the pressure of the pressure oil in the pressure cylinder increases until the first one-way valve is opened. The pressure oil in the pressure cylinder enters the inner tube through the first one-way valve and is sprayed out from the oil spray nozzle, so that the rivet is squeezed by the pressure rod and sprayed on the rivet and the rivet hole. Oil lubrication, the lubricating oil attached to the rivet moves downward with the rivet and enters between the rivet and the rivet hole of the workpiece; when the pressure rod moves upward, the inner tube moves downward under the push of the first return spring, so that the space in the cylinder above the inner tube becomes larger, the pressure is reduced, and the back pressure of the second one-way valve is reduced. At this time, the lubricating oil in the pressure oil tank pushes the second one-way valve into the pressure cylinder, and the first one-way valve is closed due to the pressure reduction, so as to achieve the purpose of refilling the lubricating oil in the pressure cylinder and prepare for the next riveting, so as to achieve the purpose of the oil injection assembly starting to spray oil when the pressure rod squeezes the rivet and stopping the oil injection when the pressure rod is separated from the rivet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure in the embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of the embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressure oil tank in the embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure inside the support box in the embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the front view of the internal structure of the support box in the embodiment of the present application;

[0023] Figure 6 3D structure diagram of the L-plate in the embodiment of the present application;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure inside the guide rod in the embodiment of the present application;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure inside the pressing cylinder in the embodiment of the present application;

[0026] Fig. 9 This is a schematic diagram of the three-dimensional structure inside the frame in the embodiment of the present application;

[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of the control panel in the embodiment of the present application;

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure inside the guide rod and sleeve in the embodiment of the present application.

[0029] Figure numerals: 1, workbench; 2, frame; 3, riveting machine head; 4, pressure rod; 5, fixture; 6, workpiece; 7, rivet; 8, oil injection assembly; 9, rivet hole; 10, adapter block; 11, hose; 12, pressure oil tank; 13, pressure cylinder; 14, accommodating chamber; 15, inner tube; 16, first one-way valve; 17, oil injection nozzle; 18, first return spring; 19, second one-way valve; 20, frame; 21, support box; 22, push plate; 23 , guide rod; 24, sleeve; 25, second return spring; 26, limit plate; 27, L plate; 28, control plate; 29, limit hole; 30, first inclined surface; 31, second inclined surface; 32, first trigger rod; 33, second trigger rod; 34, drive block; 35, second drive surface; 36, recovery hole; 37, piston; 38, piston rod; 39, fixed rod; 40, sliding hole; 41, sealing plate; 42, third one-way valve; 43, oil drain pipe. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-11 This application is described in further detail.

[0031] The embodiment of the present application discloses a riveting device for automobile components, including a workbench 1 and a vertically arranged frame 2, a riveting head 3 is arranged on the front side of the frame 2, a pressure rod 4 is arranged in the vertical direction inside the riveting head 3, a fixture 5 is arranged on the workbench 1, the fixture 5 is used to clamp the workpiece 6, so that the riveting head 3 can control the pressure rod 4 to press down to apply pressure to the rivet 7 on the workpiece 6 to rivet the two workpieces 6, and an oil spraying assembly 8 is arranged on the right side of the outer surface of the pressure rod 4. When the pressure rod 4 presses down to squeeze the rivet 7, the oil spraying assembly 8 sprays oil at the same time, and sprays lubricating oil on the rivet 7 and the side wall of the rivet hole 9, so that the oil penetrates between the rivet 7 and the rivet hole 9 on the workpiece 6, and when the rivet 7 moves downward under pressure, the friction between the rivet 7 and the rivet hole 9 is reduced to avoid excessive damage to the workpiece 6.

[0032] In order to achieve the purpose that the oil spraying assembly 8 starts to spray oil when the pressure rod 4 squeezes the rivet 7, and stops spraying oil when the pressure rod 4 is separated from the rivet 7, in this embodiment, the oil spraying assembly 8 includes a transfer block 10 fixedly arranged with the pressure rod 4, the rear side of the transfer block 10 is connected to a hose 11, and the other end of the hose 11 is connected to a pressure oil tank 12, and the pressure oil tank 12 can continuously provide lubricating oil with a set constant pressure, and the lower end surface of the transfer block 10 is fixedly provided with a pressure cylinder 13, and the hose 11 and the pressure cylinder 13 are both connected to the pressure rod 4. The accommodating chamber 14 opened inside the adapter block 10 is connected, an inner tube 15 is sleeved in the pressure cylinder 13, a first one-way valve 16 is fixedly arranged on the upper end surface of the inner tube 15, and an oil nozzle 17 is fixedly arranged on the bottom of the outer surface of the inner tube 15. The pressure oil tank 12 is connected to the oil nozzle 17 through the hose 11, the adapter block 10, the pressure cylinder 13 and the inner tube 15 in sequence, and a first return spring 18 is arranged in the pressure cylinder 13 above the inner tube 15; when not in use, the pressure oil in the pressure oil tank 12 is filled in the hose 11, the adapter block 10, the pressure cylinder 13 and the inner tube 15. In the pressing cylinder 13 above the connecting block 10 and the inner tube 15, the opening pressure of the first one-way valve 16 is greater than the set pressure of the pressure oil tank 12, and the pressure oil in the pressing cylinder 13 is insufficient to open the first one-way valve 16; when in use, the riveting machine head 3 controls the pressing rod 4 to press down to drive the connecting block 10 and the pressing cylinder 13 to move downward, and the pressing cylinder 13 drives the inner tube 15 to move downward. When the bottom end of the inner tube 15 contacts the workpiece 6, the inner tube 15 starts to move into the pressing cylinder 13, so that the top end of the inner tube 15 contacts the inside of the pressing cylinder 13. The pressure oil is compressed, and the pressure of the pressure oil in the pressing cylinder 13 increases until the first one-way valve 16 is opened. The pressure oil in the pressing cylinder 13 enters the inner tube 15 through the first one-way valve 16 and is sprayed out from the oil nozzle 17, so that the rivet 7 is lubricated by oil spraying while being squeezed by the pressing rod 4. The lubricating oil attached to the rivet 7 moves downward with the rivet 7 and enters between the rivet 7 and the rivet hole 9 of the workpiece 6, thereby achieving the purpose of reducing the friction between the rivet 7 and the rivet hole 9 of the workpiece 6 during riveting.

[0033] In this embodiment, a second one-way valve 19 is fixedly provided at the junction of the pressing cylinder 13 and the adapter block 10, which connects the inside of the pressing cylinder 13 and the accommodating chamber 14 of the adapter block 10. The opening pressure of the second one-way valve 19 is less than the set pressure of the pressure oil tank 12. When in use, when the pressing rod 4 is pressed downward, it drives the adapter block 10, the pressing cylinder 13, the inner tube 15 and the oil nozzle 17 to move downward. When the bottom end of the pressing rod 4 contacts the top end of the rivet 7, the bottom end of the inner tube 15 contacts the workpiece 6 at the same time, and the inner tube 15 moves upward in the pressing cylinder 13, compressing the lubricating oil inside the pressing cylinder 13. The pressure of the lubricating oil inside the pressing cylinder 13 increases to close the second one-way valve 19 and open the first one-way valve 16. The lubricating oil in the pressing cylinder 13 is sprayed out from the inner tube 15 and the oil nozzle 17, penetrates between the rivet 7 and the rivet hole 9 of the workpiece 6, and makes the outer surface of the rivet 7 adhere to the lubricating oil, and the rivet 7 moves downward. While moving, the lubricating oil on the outer surface is brought into the rivet hole 9 to lubricate the rivet 7 and the rivet hole 9, preventing excessive damage to the workpiece 6; as the pressure rod 4 continues to press downward, the lubricating oil in the pressure cylinder 13 is continuously squeezed out, and when the pressure rod 4 is pressed down to the position and stops, the lubricating oil pressure in the pressure cylinder 13 is reduced, the first one-way valve 16 is closed, and the oil spraying is stopped; then the pressure rod 4 moves upward, driving the adapter block 10, the pressure cylinder 13 and the inner tube 15 to move upward, and the inner tube 15 moves downward under the push of the first return spring 18, so that the space in the pressure cylinder 13 above the inner tube 15 becomes larger, the pressure is reduced, and the back pressure of the second one-way valve 19 is reduced. At this time, the lubricating oil in the pressure oil tank 12 pushes open the second one-way valve 19 and enters the pressure cylinder 13, and the first one-way valve 16 is closed due to the pressure reduction in the pressure cylinder 13, so as to achieve the purpose of refilling the lubricating oil in the pressure cylinder 13 and prepare for the next riveting.

[0034] The lubricating oil pressure inside the pressure cylinder 13 increases and closes the second one-way valve 19. The working principle of the second one-way valve 19 being closed is that the opening pressure of the second one-way valve 19 is actually the pressure difference on both sides of the second one-way valve 19. When the lubricating oil pressure inside the pressure cylinder 13 increases, the pressure difference on both sides of the second one-way valve 19 decreases to less than the opening pressure, and the second one-way valve 19 is closed. This principle is the working principle of the one-way valve and is the prior art.

[0035] In order to realize that the workpiece 6 can be automatically lifted from the jig 5 when the riveting is completed, so as to facilitate the material removal, in the present embodiment, the jig 5 comprises a frame 20, a support box 21 is fixedly provided on the lower end surface of the frame 20, and a through hole matching the interior of the frame 20 is opened on the support box 21 at a position corresponding to the frame 20; the lower end surface of the support box 21 is fixedly provided with the workbench 1, a push plate 22 is slidingly provided in the frame 20 along the up and down directions, a guide rod 23 is fixedly provided on the lower end surface of the push plate 22, the bottom end of the guide rod 23 is sleeved in a sleeve 24 fixedly provided with the upper end surface of the workbench 1, a second return spring 25 is fixedly provided between the bottom end of the guide rod 23 and the workbench 1, the second return spring 25 always pushes the guide rod 23 to move upward, and a limited When the limit plate 26 moves downward to contact with the upper end surface of the sleeve 24, the pressure rod 4 is pressed down to start to apply pressure to the rivet 7, and the riveting of the workpiece 6 is completed.

[0036] In this embodiment, an L-plate 27 is slidably provided on the upper end surface of the workbench 1 inside the supporting box 21 along the left-right direction, a control plate 28 is fixedly provided at the end of the horizontal portion of the L-plate 27, a limiting hole 29 is provided inside the control plate 28, a first inclined surface 30 is provided at the left end of the control plate 28, and a second inclined surface 31 is provided at the right end of the control plate 28; the guide rod 23 is located in the limiting hole 29 of the control plate 28, and the limiting plate 26 is located below the control plate 28; the area of ​​the left part of the limiting hole 29 is smaller than the horizontal cross-sectional area of ​​the limiting plate 26, and the right part of the limiting hole 29 is larger than the horizontal cross-sectional area of ​​the limiting plate 26; a first trigger rod 32 is fixedly provided on the left side of the outer surface of the pressure rod 4, and a second trigger rod 33 is fixedly provided on the right side of the outer surface of the pressure rod 4; the bottom end of the first trigger rod 32 moves downward and drives the control plate 28 to move rightward by cooperating with the first inclined surface 30; the bottom end of the second trigger rod 33 moves upward and drives the control plate 28 to move leftward by cooperating with the second inclined surface 31.

[0037] When in use, the pressure rod 4 moves downward to apply pressure to the rivet 7, and the workpiece 6 is pressed to push the push plate 22 downward, and the push plate 22 drives the guide rod 23 to move downward to compress the second return spring 25, and at the same time the limit plate 26 moves downward. When the lower end surface of the limit plate 26 contacts the upper end surface of the sleeve 24, the push plate 22 stops moving downward, and the pressure rod 4 starts to squeeze and rivet the rivet 7, and the riveting is completed; in this process, the pressure rod 4 drives the first trigger rod 32 to move downward, so that the bottom end of the first trigger rod 32 drives the control plate 28 to move to the right, so that the left part of the limiting hole 29 is located above the limiting plate 26; after the riveting is completed, the pressure rod 4 is lifted up, and the pressure rod 4 drives the second trigger rod 33 to move upward, so that the bottom end of the second trigger rod 33 drives the control plate 28 to move to the left, thereby making the limiting hole 2 9 moves to the left; the second return spring 25 pushes the guide rod 23 and then pushes the push plate 22 to move upward. The push plate 22 moves upward a set distance, and the limit plate 26 contacts the lower end surface of the control plate 28 and stops moving upward. At this time, although the pressure rod 4 moves upward, the push plate 22 stops moving upward; the pressure rod 4 continues to move upward, and the bottom end of the second trigger rod 33 drives the control plate 28 to move to the left a set distance until the right side portion of the limit hole 29 is completely located above the limit plate 26, and the right side portion of the limit plate 26 is larger than the limit plate 26, the second return spring 25 can push the guide rod 23 to drive the limit plate 26 to move upward, and the limit plate 26 passes through the right side portion of the limit hole 29 and pops up upward, thereby causing the push plate 22 to pop up upward, ejecting the workpiece 6 in the frame 20, making it easier to take out the material. The next time the pressure rod 4 is pressed downward, it drives the first trigger rod 32 and the second trigger rod 33 to be pressed downward synchronously. When the second trigger rod 33 is located below the control board 28 and the right part of the limit plate 26 passing through the limit hole 29 is located below the control board 28, the bottom end of the first trigger rod 32 contacts the first inclined surface 30 of the control board 28, driving the control board 28 to move rightward to perform the next working cycle.

[0038] In this embodiment, the right side portion of the limiting hole 29 is a trapezoidal hole that is larger on the right and smaller on the left, and the left side portion of the limiting hole 29 is a rectangular hole connected to the trapezoidal hole. The trapezoidal hole enables the limiting plate 26 to pass through and move in the up and down directions, and the area of ​​the rectangular hole is smaller than the horizontal cross-sectional area of ​​the limiting plate 26; in the initial stage of the upward movement of the pressure rod 4, the bottom end of the second trigger rod 33 begins to drive the control plate 28 to move to the left. At this time, the limiting plate 26 is restricted above the control plate 28. When the control plate 28 moves to the right to the right side portion of the limiting hole 29, that is, the trapezoidal hole, the second return spring 25 pushes the guide rod 23 and the limiting plate 26 to bounce upward, so that the limiting plate 26 passes through the trapezoidal hole, and then the push plate 22 pops up, popping up the workpiece 6 to facilitate material removal.

[0039] In this embodiment, a first driving surface adapted to the first inclined surface 30 is provided at the bottom end of the first trigger rod 32. When the first trigger rod 32 moves downward, the bottom end of the first trigger rod 32 contacts the first inclined surface 30 through the first driving surface to drive the control board 28 to move rightward; a driving block 34 is fixedly provided on the left side of the bottom end of the second trigger rod 33. A second driving surface 35 adapted to the second inclined surface 31 is provided on the upper end surface of the driving block 34. When the second trigger rod 33 moves upward, it drives the driving block 34 to move upward, so that the driving block 34 contacts the second inclined surface 31 through the second driving surface 35 to drive the control board 28 to move leftward.

[0040] During use, when the pressure rod 4 moves downward to apply pressure to the rivet 7, the rivet 7 moves downward in the workpiece 6, and part of the lubricating oil is brought to the bottom along with the rivet 7. In order to realize the recovery of the lubricating oil below, in this embodiment, a recovery hole 36 is opened at the position corresponding to the upper end surface of the push plate 22 and the guide rod 23. The recovery hole 36 extends downward into the interior of the guide rod 23. A piston 37 is slidably arranged in the recovery hole 36 along the up and down directions. A fixing rod 39 is fixedly arranged radially on the lower end surface of the piston 37 through a piston rod 38. The fixing rod 39 passes through the guide rod 23 to the left and is fixed to the frame 20; The outer surface of the rod 23 is provided with a sliding hole 40 adapted to the fixed rod 39 in the up-down direction. A sealing plate 41 is fixedly provided on the guide rod 23 located in the recovery hole 36. The outer side surface of the sealing plate 41 fits with the inner side wall of the recovery hole 36. When the guide rod 23 moves up and down, the fixed rod 39 slides up and down in the sliding hole 40, and the sealing plate 41 keeps the sliding hole 40 sealed. A third one-way valve 42 is installed on the upper end surface of the piston 37 to connect the space above the piston 37 with the space below the piston 37. An oil drain pipe 43 connected to the space below the piston 37 is fixedly provided on the right side of the outer surface of the guide rod 23. When in use, the pressure rod 4 moves downward and contacts the head of the rivet 7. First, the workpiece 6 pushes the push plate 22 downward, and the push plate 22 drives the guide rod 23 and the limit plate 26 to move downward, compressing the second return spring 25. At this time, the piston 37 is fixed to the frame 20 by the fixing rod 39, and the piston 37 remains stationary. The piston 37 moves upward relative to the guide rod 23, and the space above the piston 37 becomes smaller, and the pressure increases. The lubricating oil of the previous working cycle collected in the space above the piston 37 pushes open the third one-way valve 42 and enters the space below the piston 37 and is then discharged from the oil drain pipe 43. The lubricating oil is collected and processed in a centralized manner; when riveting is completed and the pressure rod 4 moves upward, the second return spring 25 pushes the guide rod 23 to move upward, and at this time the piston 37 in the recovery hole 36 moves downward relative to the guide rod 23, and the space above the piston 37 becomes larger to form a negative pressure, thereby extracting the lubricating oil that flows to the lower end surface of the workpiece 6 during riveting; when the next workpiece 6 is riveted, when the pressure rod 4 moves downward, the lubricating oil of the previous working cycle collected in the space above the piston 37 pushes open the third one-way valve 42 and enters the space below the piston 37 and then is discharged from the oil drain pipe 43, thereby collecting and processing the lubricating oil in a centralized manner.

[0041] The implementation principle of one embodiment of the present application is as follows: when in use, the workpiece 6 is placed in the frame 20 and fixed, and then the rivet 7 is inserted into the workpiece 6, and the riveting machine head 3 is started to control the pressure rod 4 to move downward, and the pressure rod 4 moves downward to apply pressure to the rivet 7, and the workpiece 6 is pressed to push the push plate 22 to move downward, and the push plate 22 drives the guide rod 23 to move downward to compress the second return spring 25, and at the same time the limit plate 26 moves downward, and when the lower end surface of the limit plate 26 contacts the upper end surface of the sleeve 24, the push plate 22 stops moving downward, and at this time the pressure rod 4 starts to squeeze and rivet the rivet 7, and the riveting is completed; after the riveting is completed, the pressure rod 4 is lifted up, and the pressure rod 4 drives the second trigger rod 33 to move upward, so that the bottom end of the second trigger rod 33 drives the control plate 28 to move left, thereby making the limit plate 26 move downward. The positioning hole 29 moves to the left; the second return spring 25 pushes the guide rod 23 and then pushes the push plate 22 to move upward. The push plate 22 moves upward a set distance, and the limit plate 26 contacts the lower end surface of the control plate 28 and stops moving upward. At this time, although the pressure rod 4 moves upward, the push plate 22 stops moving upward; the pressure rod 4 continues to move upward, and the bottom end of the second trigger rod 33 drives the control plate 28 to move to the left a set distance until the right side part of the limiting hole 29, that is, the trapezoidal hole, is completely located above the limiting plate 26. The second return spring 25 pushes the guide rod 23 to drive the limiting plate 26 to move upward, and the limiting plate 26 passes through the right side of the limiting hole 29 and pops up upward, thereby causing the push plate 22 to pop up upward, ejecting the workpiece 6 in the frame 20 to facilitate material removal. The next time the pressing rod 4 is pressed downward, the first trigger rod 32 and the second trigger rod 33 are pressed downward synchronously. When the second trigger rod 33 is located below the control board 28, the bottom end of the first trigger rod 32 contacts the first inclined surface 30 of the control board 28, driving the control board 28 to move rightward to perform the next working cycle.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A riveting device for automobile components, comprising a workbench (1) and a vertically arranged frame (2), characterized in that: A riveting machine head (3) is arranged on the front side of the frame (2), a pressure rod (4) is arranged in the vertical direction inside the riveting machine head (3), a jig (5) is arranged on the workbench (1), the jig (5) is used to clamp the workpiece (6), and an oil spraying assembly (8) is arranged on the right side of the outer surface of the pressure rod (4). When the pressure rod (4) presses down to extrude the rivet (7), the oil spraying assembly (8) sprays oil at the same time.

2. A riveting device for automobile components according to claim 1, characterized in that: The oil injection assembly (8) comprises an adapter block (10) fixedly arranged with a pressure rod (4); a hose (11) is connected to the rear side of the adapter block (10); the other end of the hose (11) is connected to a pressure oil tank (12); the pressure oil tank (12) can continuously provide lubricating oil of a set constant pressure; a pressure cylinder (13) is fixedly arranged on the lower end surface of the adapter block (10); the hose (11) and the pressure cylinder (13) are both connected to a receiving chamber (14) provided inside the adapter block (10); and the pressure cylinder (13) is provided with a An inner tube (15) is provided, the upper end surface of the inner tube (15) is fixedly provided with a first one-way valve (16), the bottom of the outer surface of the inner tube (15) is fixedly provided with an oil injection nozzle (17), the pressure oil tank (12) is connected with the oil injection nozzle (17) through a hose (11), a switching block (10), a pressure cylinder (13) and the inner tube (15) in sequence, and a first return spring (18) is provided in the pressure cylinder (13) above the inner tube (15); the opening pressure of the first one-way valve (16) is greater than the set pressure of the pressure oil tank (12).

3. A riveting device for automobile components according to claim 2, characterized in that: A second one-way valve (19) is fixedly provided at the joint between the pressure cylinder (13) and the adapter block (10) to connect the interior of the pressure cylinder (13) and the accommodating chamber (14) of the adapter block (10), and the opening pressure of the second one-way valve (19) is less than the set pressure of the pressure oil tank (12).

4. A riveting device for automobile components according to claim 1, characterized in that: The fixture (5) comprises a frame (20), a support box (21) is fixedly arranged on the lower end surface of the frame (20), and a through hole matching the interior of the frame (20) is opened on the support box (21) at a position corresponding to the frame (20); the lower end surface of the support box (21) is fixedly arranged on the workbench (1), a push plate (22) is slidably arranged in the frame (20) along the up-down direction, a guide rod (23) is fixedly arranged on the lower end surface of the push plate (22), the bottom end of the guide rod (23) is sleeved in a sleeve (24) fixedly arranged on the upper end surface of the workbench (1), a second return spring (25) is fixedly arranged between the bottom end of the guide rod (23) and the workbench (1), the second return spring (25) always pushes the guide rod (23) to move upward, and a limit plate (26) is fixedly arranged on the outer surface of the guide rod (23).

5. A riveting device for automobile components according to claim 4, characterized in that: An L-plate (27) is provided on the upper end surface of the workbench (1) inside the supporting box (21) so as to slide in the left-right direction. A control plate (28) is fixedly provided at the end of the horizontal portion of the L-plate (27). A limiting hole (29) is provided inside the control plate (28). A first inclined surface (30) is provided at the left end of the control plate (28), and a second inclined surface (31) is provided at the right end of the control plate (28). The guide rod (23) is located in the limiting hole (29) of the control plate (28), and the limiting plate (26) is located below the control plate (28). The left side of the limiting hole (29) is provided with a first inclined surface (30). The area of ​​the limiting hole (29) is smaller than the horizontal cross-sectional area of ​​the limiting plate (26), and the right side portion of the limiting hole (29) is larger than the horizontal cross-sectional area of ​​the limiting plate (26); a first trigger rod (32) is fixedly arranged on the left side of the outer surface of the pressing rod (4), and a second trigger rod (33) is fixedly arranged on the right side of the outer surface of the pressing rod (4); the bottom end of the first trigger rod (32) moves downwards and drives the control plate (28) to move rightwards through cooperation with the first inclined surface (30); the bottom end of the second trigger rod (33) moves upwards and drives the control plate (28) to move leftwards through cooperation with the second inclined surface (31).

6. A riveting device for automobile components according to claim 5, characterized in that: The right side portion of the limiting hole (29) is a trapezoidal hole that is larger on the right and smaller on the left, and the left side portion of the limiting hole (29) is a rectangular hole connected to the trapezoidal hole; the area of ​​the trapezoidal hole is smaller than the horizontal cross-sectional area of ​​the limiting plate (26), and the area of ​​the rectangular hole is larger than the horizontal cross-sectional area of ​​the limiting plate (26).

7. A riveting device for automobile components according to claim 5, characterized in that: A first driving surface adapted to the first inclined surface (30) is provided at the bottom end of the first trigger rod (32); a driving block (34) is fixedly arranged on the left side of the bottom end of the second trigger rod (33); and a second driving surface (35) adapted to the second inclined surface (31) is provided on the upper end surface of the driving block (34).

8. A riveting device for automobile components according to claim 4, characterized in that: A recovery hole (36) is provided on the upper end surface of the push plate (22) at a position corresponding to the guide rod (23). The recovery hole (36) extends downward into the interior of the guide rod (23). A piston (37) is slidably arranged in the recovery hole (36) along the up-down direction. A fixing rod (39) is fixedly arranged in the radial direction on the lower end surface of the piston (37) through a piston rod (38). The fixing rod (39) passes through the guide rod (23) to the left and is fixedly arranged with the frame (20). The outer surface of the guide rod (23) is provided with a fixing rod (39) along the up-down direction. A sliding hole (40) adapted to the rod (39) is provided, a sealing plate (41) is fixedly arranged on the guide rod (23) located in the recovery hole (36), and the outer side surface of the sealing plate (41) is in contact with the inner side wall of the recovery hole (36); a third one-way valve (42) for connecting the space above the piston (37) and the space below the piston (37) is installed on the upper end surface of the piston (37); and an oil discharge pipe (43) is fixedly arranged on the right side of the outer surface of the guide rod (23) and is connected to the space below the piston (37).

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