A riveting fixture for aluminum car body structural components

Abstract

The application discloses a riveting tool for an aluminum vehicle body structure, and particularly relates to the technical field of aluminum vehicle body structure riveting. The riveting tool is characterized in that the aluminum vehicle body structure is preliminarily fixed by the first electric clamping jaw away from a rubber coating area, and the aluminum vehicle body structure is pushed upward by the pushing member, so that the frame plate is lifted, and the stable clamping of the aluminum vehicle body structure is ensured. The vehicle body structure is pushed upward by the rotating flap, and then the positioning head is oriented into the positioning seat, so that the state of the first electric clamping jaw is stable. The two groups of limiting members are synchronously close, so that the outer door plate and the inner door plate are conveniently positioned into the riveting seat. The aluminum vehicle body structure is closely fitted into the riveting seat through a secondary lifting action, and the self-punching riveting process is completed through a press riveting action. The tool realizes the integrated process of conveying, positioning, overturning, fitting and press riveting, reduces manual intervention, ensures the production rhythm, and improves the assembly quality and the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of riveting technology for aluminum car body structural components, specifically to a riveting fixture for aluminum car body structural components. Background Technology

[0002] With the trend of lightweighting in automobiles, aluminum alloys are gradually replacing traditional steel and are widely used in the manufacture of vehicle body frames and body panels; aluminum has advantages such as low density, high strength and good corrosion resistance.

[0003] A search revealed that utility model patent CN216950758U discloses a riveting fixture for aluminum car body structural parts. The fixture uses a cylinder to drive a push block to descend, causing a pressure plate to press down, thereby supporting the air compressor and creating a certain distance between the rollers and the ground to avoid excessive collisions caused by the vibration of the air compressor.

[0004] In traditional riveting processes, the positions of the inner and outer panels of the car door cannot be precisely fixed in the tooling, causing displacement or misalignment of the two panels during riveting. Due to unstable positioning and clamping, the rivets cannot be accurately aligned with the riveting position, resulting in reduced riveting accuracy. This affects the strength and sealing of the car door connection, causing poor appearance or insufficient structural strength of the car door, thus affecting riveting accuracy and connection quality. The riveting process requires a lot of manual intervention, such as manual adjustment and positioning of the inner and outer panels of the car door. This not only increases human error but also leads to a slower production cycle, affecting overall production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a riveting fixture for aluminum car body structural components to solve the problems mentioned in the background art.

[0006] The main technical problem solved by this invention is:

[0007] The inability to precisely fix the inner and outer panels of the car door in the tooling causes displacement or misalignment of the two panels during riveting. Due to unstable positioning and clamping, the rivets cannot be precisely aligned with the riveting position, resulting in reduced riveting accuracy. This affects the strength and sealing of the car door connection, causing poor appearance or insufficient structural strength of the car door, and affecting the riveting accuracy and connection quality.

[0008] This invention can be achieved through the following technical solutions:

[0009] A riveting fixture for aluminum body structural parts includes a processing table, a notch on the middle surface of the processing table, conveyor chain plates for positioning and conveying the inner door panel and the outer door panel respectively on both sides of the notch, and a riveting seat above the notch. Inside the processing table and at the end of the conveyor chain plate, a pusher is provided to lift the corresponding aluminum body structural parts upward.

[0010] The processing table is equipped with a multi-segment travel limit locking unit on one side adjacent to the conveyor chain plate. The limit locking unit is used to clamp the coated aluminum body structural parts at fixed points.

[0011] The limiting and locking unit includes a frame plate, on which two sets of limiting members that move simultaneously toward or away from each other are slidably mounted. Each set of limiting members includes two fixing members. The top of each fixing member is hinged to a positioning seat, and a torsion spring is installed at the hinge between the fixing member and the positioning seat. An electric gripper that clamps the corresponding vehicle body structural member is installed on the positioning seat.

[0012] As the aluminum body structure rises, the limiting and locking unit follows the movement of the pushing component, keeping the aluminum body structure component moving upwards and freeing it from the restriction of the conveyor chain plate.

[0013] The aluminum body structural components are flipped to a vertical position and brought closer together. They are then raised a second time to enter the rivet seat for fitting and riveting.

[0014] During descent, the aluminum body structural components are attached and riveted.

[0015] Each fastener is fitted with a torsion spring at the hinge point between itself and its corresponding positioning seat.

[0016] Each fastener has a positioning head embedded in its upper part, driven by an electric gripper;

[0017] Each conveyor chain plate has a flip plate installed on the outer end of its end, which is driven by a flip motor and pushes the corresponding body structural component to flip upward.

[0018] A further technical improvement of the present invention is that a segmented stroke cylinder is installed below the frame plate, and the segmented stroke cylinder is installed on the side adjacent to the notch.

[0019] The frame plate is provided with a bidirectional screw for driving the movement of two sets of limiting members inside, and the surface of the frame plate is provided with a slide rail that slides in cooperation with the limiting members.

[0020] A further technical improvement of the present invention is that the pushing component includes a lifting push rod installed in the processing table near the end of the conveyor chain plate, and the pushing end of the lifting push rod is equipped with a push plate that contacts the aluminum body structural component.

[0021] A further technical improvement of the present invention is that: the inner cavity of the riveting seat is equipped with a pushing and adsorption unit for fixing aluminum body structural parts. The pushing and adsorption unit includes a lateral push rod installed on the side wall of the riveting seat. The pushing end of the lateral push rod is connected to a connecting plate. Multiple adsorption components are installed on the inner side of the connecting plate. The adsorption components are connected to the suction end of the negative pressure pump.

[0022] A further technical improvement of the present invention is that: a bottom plate is slidably provided at the bottom of the connecting plate, and an outwardly protruding clamping plate is provided on the side of the bottom plate away from the adsorption member, and a tension spring is sleeved on the side of the bottom plate near the clamping plate.

[0023] A further technical improvement of the present invention is that: a rivet feeding seat for directional rivet feeding is installed on the side of the outer surface of the riveting seat near the conveyor chain plate of the outer panel of the conveyor door, and the upper surface of the rivet feeding seat is provided with a storage opening;

[0024] The end of the feeding seat extends into the interior of the riveting seat, and a pressure plate driven by a feeding cylinder is installed inside the feeding seat.

[0025] A fixing frame is installed in the middle of the processing table, and the fixing frame is fixed to the riveting seat.

[0026] A further technical improvement of the present invention is that: a top plate is provided at the top of the inner cavity of the riveting seat, a rotary motor is installed on the lower surface of the top plate, and an electric gripper is installed at the drive end of the rotary motor to hold the riveted aluminum body structural parts.

[0027] A further technical improvement of the present invention is that: a positioning chain plate perpendicular to the feeding direction of the conveyor chain plate is provided below the notch, and several sets of positioning plates are installed on the positioning chain plate;

[0028] After being pressed and riveted, the aluminum body structural component is pushed down to a fixed point by the electric gripper II and limited to enter any set of positioning plates.

[0029] A further technical improvement of the present invention is that: each conveyor chain plate is equipped with multiple sets of limiting members that cooperate with the holes and grooves on the inner and outer panels of the car door. The limiting members include multiple bearing columns, each of which is a convex structure.

[0030] A further technical improvement of the present invention is that: each of the conveyor chain plates is provided with a glue coating chamber above the middle part, a glue storage tank is installed on the upper surface of the glue coating chamber, the liquid outlet end of the glue storage tank is connected to a diversion pipe, and multiple liquid outlet ends of the diversion pipe are connected to a connecting pipe through a flexible hose;

[0031] The inside of the glue coating chamber is rotatably installed with a worm gear, which meshes with multiple worm wheels, and a fixed plate is provided below the worm gear, with each worm wheel rotatably set with the fixed plate;

[0032] The worm gear is threadedly connected to the corresponding connecting pipe. A glue applicator is installed at the bottom of the connecting pipe. The lower surface of the glue applicator is provided with a sealing gasket that maintains glue adhesion with the aluminum body structural parts.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. By setting up a limit locking unit and a pushing component, the electric gripper initially fixes the aluminum body structure component away from the glue application area. The pushing component then pushes and lifts the aluminum body structure component upwards, freeing it from the conveyor chain's conveying restriction. Simultaneously, the frame plate rises along with it, ensuring stable clamping of the aluminum body structure component by the electric gripper pair. As the entire aluminum body structure component rises, a rotating flip plate pushes the corresponding body structure component upwards, causing the inner and outer door panels to gradually change from a horizontal to a vertical state and move closer together. This ensures secure positioning while preventing dents in the aluminum panels due to excessive pressure. If there is a scratch or deformation, the positioning head will be oriented into the positioning seat to keep the electric gripper stable. The two sets of limiting parts will move closer together to bring the outer door panel and the inner door panel closer together, making it easier to enter the riveting seat. In the second lifting action, the aluminum body structural parts will enter the riveting seat and fit tightly together. The self-piercing riveting process will be completed through the pressing action. The tooling realizes the integrated process of conveying, positioning, flipping, fitting and pressing, reducing manual intervention, ensuring production cycle, and avoiding misalignment and deformation of aluminum sheet parts during the connection process, thereby improving the assembly quality and production efficiency of the door assembly.

[0035] 2. Upon entering the riveting seat, the aluminum body structural component is higher than the base plate. The lateral push rod then moves the connecting plate inward, causing multiple adsorption components mounted on the connecting plate to adhere tightly to the surface of the aluminum body structural component. The two base plates are pushed closer together, forcing the tension spring to stretch elastically. After the structural adhesive of the aluminum body structural component is aligned and bonded, the rivet is precisely delivered to the end of the riveting seat by the push plate and pressed in by the outer body panel, passing through the inner body panel to form a riveting connection. This firmly secures the inner and outer body panels together. While the structural adhesive is not fully cured, the aluminum body structural component is bonded and self-piercing riveted. The rivet squeezes out some adhesive during insertion, forming a sealing ring around the rivet point. The adhesive layer is compacted under the riveting force, ensuring even distribution. The electric gripper clamps the aluminum body structural component downwards. After clamping, the aluminum body structural component is pushed out of the riveting seat a second time. Then, the rotary motor starts, rotating the angle of the aluminum body structural component to facilitate its exit from below the notch.

[0036] 3. Inside the glue application chamber, the worm gear meshes with and rotates with multiple worm wheels. Due to the threaded connection between the worm wheels and the connecting pipes, the corresponding multiple connecting pipes descend synchronously in a straight line, causing the hoses to extend and ensuring smooth glue delivery. During descent, the glue application head is precisely positioned at the predetermined glue application position on the aluminum body structural component, and a sealing gasket is used to maintain contact with the aluminum body structural component. This ensures that the glue is applied evenly and accurately to the contact area of ​​the aluminum body structural component, while ensuring that the glue thickness of the outer and inner panels of the door is consistent. The amount and distribution of glue applied each time are precisely controlled to ensure the uniformity of the glue layer, thereby improving the quality of the riveting process and reducing the impact of poor glue application on door assembly.

[0037] 4. By setting limiting components, the holes and slots of the aluminum body structural components are precisely aligned with the bearing columns, avoiding misalignment or instability of the structural components during transportation. The aluminum body structural components are placed on the limiting components on the conveyor chain plates on different sides, so that there is an installation gap between the aluminum body structural components and the conveyor chain plates, which makes it convenient for the electric grippers on the corresponding sides to extend into the installation gap to clamp the aluminum body structural components. Attached Figure Description

[0038] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the internal structure of the coating chamber of the present invention;

[0041] Figure 3 This is a schematic diagram of the installation structure of the lifting push rod of the present invention;

[0042] Figure 4 For the present invention Figure 3 A magnified view of a section at point A in the middle;

[0043] Figure 5 This is a schematic diagram of the partial installation structure of the electric gripper and the fixing member of the present invention;

[0044] Figure 6 This is a schematic diagram of the internal structure of the riveting seat of the present invention;

[0045] Figure 7 This is a three-dimensional installation structure diagram of the frame plate and the fastener of the present invention.

[0046] In the diagram: 1. Processing table; 2. Fixing frame; 3. Riveting seat; 4. Rivet feeding seat; 5. Conveyor chain plate; 6. Glue application chamber; 7. Flip plate; 8. Positioning chain plate; 9. Groove; 10. Bearing column; 11. Glue storage tank; 12. Connecting pipe; 13. Worm gear; 14. Worm wheel; 15. Glue application head; 16. Sealing gasket; 17. Diverter pipe; 18. Frame plate; 19. Fixing component; 20. Electric gripper one; 21. Segmented stroke cylinder; 22. Lifting push rod; 23. Positioning seat; 24. Positioning head; 25. Adsorption component; 26. Lateral push rod; 27. Connecting plate; 28. Base plate; 30. Electric gripper two; 31. Rotary motor; 32. Bidirectional screw. Detailed Implementation

[0047] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0048] Please see Figures 1-7 As shown, the present invention provides a riveting fixture for aluminum body structural parts, including a processing table 1, a notch 9 on the middle surface of the processing table 1, a conveyor chain plate 5 for positioning and conveying the inner door panel and the outer door panel on both sides of the notch 9, and a riveting seat 3 above the notch 9. Inside the processing table 1 and at the end of the conveyor chain plate 5, a pusher is provided to lift the corresponding aluminum body structural parts upward.

[0049] The processing table 1 has a multi-segment travel limit locking unit on one side adjacent to the conveyor chain plate 5. The limit locking unit is used to clamp the glued aluminum body structural parts at fixed points.

[0050] The limiting and locking unit includes a frame plate 18. Two sets of limiting members that move simultaneously toward or away from each other are slidably installed on the frame plate 18. Each set of limiting members includes two fixing members 19. A positioning seat 23 is hinged to the top of each fixing member 19. A torsion spring is installed at the hinge between the fixing member 19 and the positioning seat 23. An electric gripper 20 that clamps the corresponding body structural member is installed on the positioning seat 23.

[0051] As the aluminum body structure rises, the limit locking unit follows the movement of the pusher, keeping the aluminum body structure component upward and free from the restriction of the conveyor chain plate 5.

[0052] The aluminum body structural parts are flipped to a vertical position and brought closer to each other. They are then raised a second time so that they enter the riveting seat 3 and are then pressed together.

[0053] During descent, the aluminum body structural components are attached and riveted.

[0054] Each fastener 19 is fitted with a torsion spring at the hinge joint with the corresponding positioning seat 23;

[0055] Each fastener 19 has a positioning head 24 driven by an electric gripper embedded in its upper part;

[0056] Each conveyor chain plate 5 has a flip plate 7 installed on the outer end of its end, which is driven by a flip motor and pushes the corresponding body structural component to flip upward.

[0057] During the tooling process, the inner door panel and the outer door panel are respectively positioned and conveyed by the conveyor chain plates 5 on both sides, and structural adhesive is applied at fixed points during conveying;

[0058] In the initial state, such as Figure 4 As shown, the electric gripper 20 in the limit locking unit is in the open state. After the glue is applied, the aluminum body structure reaches the end of the conveyor chain plate 5. At this time, the end of the aluminum body structure enters the open electric gripper 20, and the electric gripper 20 initially fixes the aluminum body structure.

[0059] Then, the pusher pushes the aluminum body structure component upward and lifts it out of the conveying restriction of the conveyor chain plate 5. At the same time, the frame plate 18 rises along with it to ensure that the electric gripper 20 stably clamps the aluminum body structure component.

[0060] When the aluminum body structure component rises as a whole, its height is higher than that of the flip plate 7. The flipping motor works to push the corresponding body structure component to flip upward, so that the inner and outer panels of the door gradually change from a horizontal state to a vertical state and move closer to each other. This ensures a firm positioning and avoids dents or deformation of the aluminum plate due to excessive pressure. In this state, the positioning seat 23 and the fixing part 19 rotate around the hinge point and the angle changes. Then, the positioning head 24 is oriented into the positioning seat 23 to keep the electric gripper 20 stable.

[0061] The frame plate 18 of the limit locking unit drives the two sets of limiting parts to move closer together synchronously. The fixing part 19 of each set of limiting parts is elastically connected to the positioning seat 23 through the torsion spring, so as to bring the outer door panel and the inner door panel closer together, ensuring that the aluminum body structure parts do not misalign during the flipping and bonding process, and improving the riveting accuracy.

[0062] During the second lifting action, when the aluminum body structural component enters the riveting seat 3, the aluminum body structural component achieves a tight fit and completes the self-piercing riveting process through the pressing riveting action. The tooling realizes the integrated process of conveying, positioning, flipping, fitting and pressing riveting, reducing manual intervention, ensuring production cycle, and avoiding misalignment and deformation of aluminum sheet parts during the connection process, thereby improving the assembly quality and production efficiency of the door assembly.

[0063] See Figure 4 and Figure 7 As shown, a segmented stroke cylinder 21 is installed below the frame plate 18, and the segmented stroke cylinder 21 is installed on one side adjacent to the notch 9.

[0064] The frame plate 18 is provided with a bidirectional screw 32 for driving the movement of two sets of limiting members, and the surface of the frame plate 18 is provided with a slide rail that slides in cooperation with the limiting members.

[0065] Initially, the segmented stroke cylinder 21 does not work. During each operation, it pushes the frame plate 18 upward a short distance, so that it follows the pushing path of the pusher.

[0066] When the electric gripper 20 positions the aluminum body structure component and is pushed by an external force to rotate and flip it, after the state of the fixing component 19 and the positioning seat 23 is stable, the two sets of limiting components approach the middle and are moved upward by the frame plate 18 for a second time, conveying the approaching aluminum body structure component upward into the riveting seat 3.

[0067] See Figure 3As shown, the pushing component includes a lifting push rod 22 installed in the processing table 1 near the end of the conveyor chain plate 5, and the pushing end of the lifting push rod 22 is equipped with a push plate that contacts the aluminum body structural component;

[0068] After the aluminum body structure is conveyed to the end by the conveyor chain plate 5, the lifting push rod 22 extends vertically, the push plate contacts the bottom of the aluminum body structure and applies an upward lifting force to it, so that the aluminum body structure is completely removed from the support of the conveyor chain plate 5 and the aluminum body structure is raised to the flipping operation height.

[0069] See Figure 6 As shown, the inner cavity of the riveting seat 3 is equipped with a push adsorption unit for fixing aluminum body structural parts. The push adsorption unit includes a lateral push rod 26 installed on the side wall of the riveting seat 3. The push end of the lateral push rod 26 is connected to a connecting plate 27. Multiple adsorption components 25 are installed on the inner side of the connecting plate 27. The adsorption components 25 are connected to the suction end of the negative pressure pump.

[0070] A bottom plate 28 is slidably provided at the bottom of the connecting plate 27. A protruding clamping plate is provided on the side of the bottom plate 28 away from the adsorption member 25, and a tension spring is sleeved on the side of the bottom plate 28 near the clamping plate.

[0071] After the aluminum body structural component is fed into the riveting seat 3 through the limiting and locking unit, making the height of the aluminum body structural component higher than the height of the base plate 28, the lateral push rod 26 moves, causing the connecting plate 27 to move inward, so that the multiple adsorption components 25 installed on the connecting plate 27 are in close contact with the surface of the aluminum body structural component. The two base plates 28 are pushed and brought close together, and the tension spring is forced to elastically stretch, generating a restoring force. This restoring force not only limits the movement of the base plate 28, but also allows the base plate 28 to quickly return to its original position when released, thereby ensuring the stable contact and rapid return of the adsorption components 25.

[0072] At this time, the negative pressure pump starts and forms a negative pressure adsorption force by pumping air. Multiple adsorption components 25 act on different areas of the aluminum body structure at the same time, and reliably fix the aluminum body structure. Negative pressure adsorption can fix the aluminum body structure without increasing the mechanical clamping force, and avoids dents or deformation on the outer panel surface due to excessive clamping.

[0073] Multiple adsorption components 25 are arranged according to the geometry and distribution of the door structural components to adapt to the needs of different vehicle models and different structural components, thereby enhancing the versatility of the tooling.

[0074] See Figure 1 and Figure 6 As shown, a rivet feeding seat 4 for directional rivet feeding is installed on the outer surface of the riveting seat 3 near the conveyor chain plate 5 of the outer panel of the conveyor door. The upper surface of the rivet feeding seat 4 is provided with a storage opening.

[0075] The end of the nail feeder 4 extends into the interior of the riveting base 3, and a pressure plate driven by a feeding cylinder is installed inside the nail feeder 4.

[0076] A fixing frame 2 is installed in the middle of the processing table 1, and the fixing frame 2 is fixed to the riveting seat 3;

[0077] After the aluminum body structural parts are clamped and positioned, the rivet feeder 4 receives the rivets from the outside through the storage port and feeds them into the working area of ​​the riveting seat 3.

[0078] The feeding cylinder drives the pressure plate to push the rivet into the riveting position in the riveting seat 3. At this time, the rivet is precisely delivered to the end of the riveting seat 3 by the push plate and pressed in by the outer body panel, passing through the inner body panel to form a riveting connection. The tail of the rivet expands into a "mushroom head" shape on the inner body panel, firmly fastening the inner and outer body panels together to ensure the connection strength and stability of the structural components. While the structural adhesive is not fully cured, the aluminum body structural components are attached and self-piercing riveted. When the rivet is pierced, it will squeeze out some adhesive, forming a sealing ring around the rivet point.

[0079] The adhesive layer is compacted under the riveting force to ensure uniform distribution.

[0080] See Figure 6 As shown, a top plate is provided at the top of the inner cavity of the riveting seat 3. A rotary motor 31 is installed on the lower surface of the top plate. An electric gripper 30 for clamping the riveted aluminum body structural parts is installed at the drive end of the rotary motor 31.

[0081] After riveting is completed, the lateral push rod 26 is reset, and the electric gripper 30 clamps the aluminum body structure component downwards. After clamping, the aluminum body structure component is pushed away from the inside of the riveting seat 3 for the second time. Then, the rotary motor 31 is started to rotate the angle of the aluminum body structure component so that it can easily leave from under the notch 9.

[0082] See Figure 3 As shown, a positioning chain plate 8 is provided below the slot 9, which is perpendicular to the feeding direction of the conveyor chain plate 5. Several sets of positioning plates are installed on the positioning chain plate 8.

[0083] After being pressed and riveted, the aluminum body structural parts are pushed down to a fixed point by the electric gripper 30 and limited to enter any set of positioning plates;

[0084] The electric gripper 30 pushes the aluminum body structure component vertically downwards until its lower part is embedded in a set of positioning plates on the positioning chain plate 8, ensuring the stability of the component's position, reducing manual intervention, improving work efficiency, ensuring accurate fixing of the aluminum body structure component, and preventing misalignment or asymmetry in subsequent processes.

[0085] See Figure 4As shown, each conveyor chain plate 5 is equipped with multiple sets of limiting components that cooperate with the holes and slots on the inner and outer panels of the door. The limiting components include multiple bearing columns 10, each bearing column 10 being a convex structure.

[0086] The design of the limiting component ensures that the holes and slots of the inner and outer panels of the car door are precisely aligned with the support column 10, preventing misalignment or instability of the structural components during transportation. The aluminum body structural components are placed on the limiting components on the conveyor chain plates 5 on different sides, creating an installation gap between the aluminum body structural components and the conveyor chain plates 5. This allows the electric gripper 20 on the corresponding side to extend into the installation gap and clamp the aluminum body structural components.

[0087] See Figure 1 and Figure 2 As shown, each conveyor chain plate 5 is provided with a glue coating chamber 6 above the middle part. A glue storage tank 11 is installed on the upper surface of the glue coating chamber 6. The liquid outlet end of the glue storage tank 11 is connected to a diversion pipe 17. Multiple liquid outlet ends of the diversion pipe 17 are connected to a connecting pipe 12 through a flexible hose.

[0088] The inside of the glue application chamber 6 is rotatably mounted with a worm gear 13, which meshes with multiple worm wheels 14. A fixed plate is provided below the worm gear 13, and each worm wheel 14 is rotatably mounted with the fixed plate.

[0089] The worm gear 14 is threadedly connected to the corresponding connecting pipe 12. A glue applicator 15 is installed at the bottom of the connecting pipe 12. The lower surface of the glue applicator 15 is provided with a sealing gasket 16 that maintains glue adhesion with the aluminum body structural parts.

[0090] The structural adhesive in the storage tank 11 is distributed to multiple connecting pipes 12 through the distribution pipe 17. Inside the adhesive application chamber 6, the worm gear 13 meshes with multiple worm wheels 14 and rotates. Due to the threaded connection between the worm wheels 14 and the connecting pipes 12, the corresponding multiple connecting pipes 12 descend synchronously in a straight line, causing the hoses to extend and ensuring smooth delivery of the structural adhesive. During descent, the adhesive application head 15 is precisely positioned at the predetermined adhesive application position of the aluminum body structural component, and the sealing gasket 16 is used to maintain contact with the aluminum body structural component, ensuring that the adhesive is evenly and accurately applied to the contact area of ​​the aluminum body structural component. At the same time, it ensures that the adhesive application effect (thickness) of the outer and inner panels of the car door is consistent, and the amount and distribution of adhesive applied each time are precisely controlled to ensure the uniformity of the adhesive layer, thereby improving the quality of the riveting process and reducing the impact of poor adhesive application on the assembly of the car door.

[0091] In use, this invention, through the cooperation of a limiting and locking unit and a pushing component, uses an electric gripper 20 to initially fix the aluminum body structure component away from the adhesive application area. The pushing component then lifts the aluminum body structure component upwards, freeing it from the conveying restriction of the conveyor chain 5. Simultaneously, the frame plate 18 rises, ensuring stable clamping of the aluminum body structure component by the electric gripper 20. As the entire aluminum body structure component rises, a rotating flip plate 7 pushes the corresponding body structure component upwards, causing the inner and outer door panels to gradually change from a horizontal to a vertical state and move closer together. This ensures secure positioning while preventing damage to the aluminum panels due to excessive pressure. When dents or deformations occur, the positioning head 24 is oriented into the positioning seat 23 to keep the electric gripper 20 stable. The two sets of limiting parts move closer together synchronously, bringing the outer door panel and the inner door panel closer together to facilitate entry into the riveting seat 3. In the second upward movement, the aluminum body structural parts enter the riveting seat 3 and fit tightly together. The self-piercing riveting process is completed through the pressing riveting action. The tooling realizes the integrated process of conveying, positioning, flipping, fitting and pressing riveting, reducing manual intervention, ensuring production cycle, and avoiding misalignment and deformation of aluminum sheet parts during the connection process, thereby improving the assembly quality and production efficiency of the door assembly.

[0092] Upon entering the riveting seat 3, the aluminum body structural component is higher than the base plate 28. Then, the lateral push rod 26 moves, causing the connecting plate 27 to move inward. This causes multiple adsorption components 25 mounted on the connecting plate 27 to adhere tightly to the surface of the aluminum body structural component. Simultaneously, the two base plates 28 are pushed closer together, forcing the tension spring to stretch elastically. After the structural adhesive of the aluminum body structural component aligns and adheres, the rivet is precisely delivered to the end of the riveting seat 3 by the push plate, pressed in by the outer body panel, and passes through the inner body panel to form a secure riveted connection. The inner and outer panels of the car body are fastened together, and while the structural adhesive is not fully cured, the aluminum body structural parts are attached and self-piercing riveted. When the rivets are driven in, they will squeeze out some adhesive, forming a sealing ring around the rivet point. The adhesive layer is compacted under the riveting force to ensure uniform distribution. The electric gripper 30 clamps the aluminum body structural parts downwards. After clamping, the aluminum body structural parts are pushed out of the riveting seat 3 for the second time. Then, the rotary motor 31 is started to rotate the angle of the aluminum body structural parts so that they can easily leave from under the notch 9.

[0093] Inside the gluing chamber 6, the worm gear 13 meshes with and rotates with multiple worm wheels 14. Due to the threaded connection between the worm wheels 14 and the connecting pipe 12, the corresponding multiple connecting pipes 12 descend synchronously in a straight line, causing the hose to extend and ensuring the smooth delivery of structural adhesive. During descent, the gluing head 15 is precisely positioned at the predetermined gluing position of the aluminum body structural component, and the sealing gasket 16 is used to maintain contact with the aluminum body structural component, ensuring that the adhesive is applied evenly and accurately to the contact area of ​​the aluminum body structural component. At the same time, it ensures that the adhesive thickness of the outer and inner panels of the door is consistent, and the amount and distribution of adhesive applied each time are precisely controlled to ensure the uniformity of the adhesive layer, thereby improving the quality of the riveting process and reducing the impact of poor adhesive application on door assembly.

[0094] By setting limiting components, the holes and slots of the aluminum body structure components are precisely aligned with the bearing column 10, avoiding misalignment or instability of the components during transportation. The aluminum body structure components are placed on the limiting components on the conveyor chain plates 5 on different sides, so that there is an installation gap between the aluminum body structure components and the conveyor chain plates 5, which makes it convenient for the electric gripper 20 on the corresponding side to extend into the installation gap to clamp the aluminum body structure components.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A riveting tool for an aluminum body structure member, comprising a processing table (1), characterized in that: The aluminum body structure includes a door inner plate and a door outer plate, a middle surface of the processing table (1) is provided with a slot (9), both sides of the slot (9) are respectively provided with a conveying chain plate (5) for positioning and conveying the door inner plate and the door outer plate, and an upper portion of the slot (9) is provided with a riveting seat (3), an inside of the processing table (1) and a terminal end of the conveying chain plate (5) are provided with a pushing member for lifting the corresponding aluminum body structure upward; An inside of the processing table (1) and a side adjacent to the conveying chain plate (5) are provided with a multi-segment stroke limiting and clamping unit, and the limiting and clamping unit is used for clamping the glued aluminum body structure at a fixed point; The limiting and clamping unit includes a frame plate (18), the frame plate (18) is slidably provided with two groups of limiting members which are simultaneously close to or away from each other, each group of limiting members includes two fixed members (19), a top of each fixed member (19) is hingedly provided with a positioning seat (23), a hinge joint between the fixed member (19) and the positioning seat (23) is provided with a torsion spring, and the positioning seat (23) is provided with an electrically-operated clamping jaw (20) for clamping the corresponding aluminum body structure; In a first lifting, the limiting and clamping unit moves with the pushing member, and the aluminum body structure is kept to be lifted upward and separated from the conveying chain plate (5); The aluminum body structure is turned to be close to each other in a vertical state, and in a second lifting, the aluminum body structure is made to enter the riveting seat (3) to be adhered and riveted; In a descending, the aluminum body structure is completed to be adhered and riveted; A top of each fixed member (19) is embedded with a positioning head (24) driven by the electrically-operated clamping jaw; A terminal end of each conveying chain plate (5) is provided with a turning plate (7) driven by a turning motor and pushing the corresponding body structure upward to be turned upward; A lower portion of the frame plate (18) is provided with a segmented stroke air cylinder (21), and the segmented stroke air cylinder (21) is installed at a side position adjacent to the slot (9); An inside of the frame plate (18) is provided with a bidirectional screw rod (32) for driving the two groups of limiting members to move, and a surface of the frame plate (18) is provided with a sliding rail in sliding cooperation with the limiting member; The pushing member includes a jacking push rod (22) installed at a terminal end of the conveying chain plate (5) adjacent to the processing table (1), and a pushing plate is installed at a pushing end of the jacking push rod (22) and in contact with the aluminum body structure.

2. A riveting tool for use in an aluminum vehicle body structure according to claim 1, wherein An inner cavity of the riveting seat (3) is provided with a pushing and adsorbing unit for fixing the aluminum body structure, the pushing and adsorbing unit includes a lateral push rod (26) installed on a side wall of the riveting seat (3), a pushing end of the lateral push rod (26) is connected with a connecting plate (27), a plurality of adsorbing members (25) are installed on an inner side of the connecting plate (27), and the adsorbing members (25) are connected with a suction end of a negative pressure pump.

3. A riveting tool for use in an aluminium vehicle body structure according to claim 2, wherein A bottom of the connecting plate (27) is slidably provided with a bottom plate (28), a side of the bottom plate (28) away from the adsorbing members (25) is provided with a clamping plate protruding outward, and a side of the bottom plate (28) close to the clamping plate is sleeved with a tension spring.

4. The riveting tool for an aluminum body structural member according to claim 1, wherein An outer surface of the riveting seat (3) is provided with a rivet feeding seat (4) for feeding a rivet in a direction, and an upper surface of the rivet feeding seat (4) is provided with a storage opening. The end of the nail feeding seat (4) extends to the inside of the riveting seat (3), and the inside of the nail feeding seat (4) is provided with a pressing plate driven by a feeding cylinder; The middle part of the processing table (1) is provided with a fixing frame (2), and the fixing frame (2) is fixed with the riveting seat (3).

5. The riveting tool for an aluminum body structural member according to claim 1, wherein The top of the inner cavity of the riveting seat (3) is provided with a top plate, the lower surface of the top plate is provided with a rotary motor (31), and the driving end of the rotary motor (31) is provided with an electric clamp jaw two (30) for clamping the riveted aluminum body structure.

6. A riveting tool for use in connection with an aluminum vehicle body structure member as defined in claim 1, wherein The lower part of the slot (9) is provided with a positioning chain plate (8) perpendicular to the feeding direction of the conveying chain plate (5), and a plurality of positioning plates are installed on the positioning chain plate (8). The riveted aluminum body structure is driven by the electric clamp jaw two (30) to drop at a fixed point and is limited to enter any one of the positioning plates.

7. A riveting tool for use in connection with an aluminum vehicle body structure member as defined in claim 1, wherein Each conveying chain plate (5) is provided with a plurality of limiting pieces for cooperating with the holes and grooves on the inner and outer panels of the door, and the limiting pieces include a plurality of bearing columns (10).

8. A riveting tool for use in connection with an aluminum vehicle body structure member as defined in claim 1, wherein The middle part of each conveying chain plate (5) is provided with a glue applying chamber (6), the upper surface of the glue applying chamber (6) is provided with a glue storage barrel (11), the liquid outlet end of the glue storage barrel (11) is connected with a shunt pipe (17), and the liquid outlet end of the shunt pipe (17) is connected with a communication pipe (12) through a hose. The inside of the glue applying chamber (6) is rotatably provided with a worm (13), the worm (13) is engaged with a plurality of worm gears (14), and the lower part of the worm (13) is provided with a fixed plate, and each worm gear (14) is rotatably provided with the fixed plate; The worm gear (14) is threadedly connected with the corresponding communication pipe (12), the bottom of the communication pipe (12) is provided with a glue applying head (15), and the lower surface of the glue applying head (15) is provided with a sealing gasket (16) for keeping the glue injection and the aluminum body structure in a bonded state.

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