Riveting tool for aluminum vehicle body structural member

Abstract

The invention discloses a riveting tool for an aluminum vehicle body structural part, and particularly relates to the technical field of aluminum vehicle body structural part riveting. Through cooperation of a limiting clamping unit and a pushing part, the aluminum vehicle body structural part far away from a gluing area is preliminarily fixed through a first electric clamping jaw, and the aluminum vehicle body structural part is pushed and lifted upwards through the pushing part; meanwhile, the frame plate ascends along with the frame plate, and it is guaranteed that the aluminum vehicle body structural part is stably clamped; the rotating turning plate pushes the vehicle body structural part to turn over upwards, then the positioning head enters the positioning seat in a directional mode, and the state of the first electric clamping jaw is kept stable; the two groups of limiting pieces approach synchronously, so that the vehicle door outer plate and the vehicle door inner plate enter the riveting seat conveniently; according to the automatic riveting tool, the aluminum vehicle body structural part enters the riveting base to be tightly attached through the secondary rising action, the self-piercing riveting process is completed through the pressing riveting action, the integrated process of conveying, positioning, overturning, attaching and pressing riveting is achieved through the tool, manual intervention is reduced, the production takt is guaranteed, and the assembling quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the riveting technology field of aluminum vehicle body structural members, in particular to a riveting tool for an aluminum vehicle body structural member. BACKGROUND

[0002] Under the development trend of automobile light weight, aluminum alloy materials gradually replace traditional steel materials and are widely applied to the manufacturing of vehicle body skeletons and coverings; the aluminum materials have the advantages of low density, high strength, good corrosion resistance and the like.

[0003] Through the search, the utility model patent with the publication number CN216950758U discloses a riveting tool for an aluminum vehicle body structural member; the pushing block is lowered by the air cylinder, the pressing plate is pressed downward, the air compressor is supported, a certain distance is generated between the roller and the ground, and excessive collision caused by the vibration of the air compressor is avoided.

[0004] In the traditional riveting process, the positions of the inner and outer door plates in the tool cannot be accurately fixed, displacement or misplacement of the two plate pieces occurs during riveting, the rivets cannot be accurately aligned with the riveting positions due to unstable positioning and clamping, the riveting precision is reduced, the strength and sealing performance of the door connection are affected, the appearance of the door is poor or the structural strength is insufficient, the riveting precision and the connection quality are affected, and the riveting process needs more manual intervention, such as manual adjustment and positioning of the inner and outer door plates, which not only increases the human error but also causes slow production rhythm and affects the overall production efficiency. SUMMARY

[0005] The application aims to provide a riveting tool for an aluminum vehicle body structural member to solve the problems mentioned in the background.

[0006] The application mainly solves the technical problem that: The positions of the inner and outer door plates in the tool cannot be accurately fixed, displacement or misplacement of the two plate pieces occurs during riveting, the rivets cannot be accurately aligned with the riveting positions due to unstable positioning and clamping, the riveting precision is reduced, the strength and sealing performance of the door connection are affected, the appearance of the door is poor or the structural strength is insufficient, and the riveting precision and the connection quality are affected.

[0007] The application can be realized through the following technical scheme: A riveting tool for an aluminum vehicle body structural member, comprising a machining table, a missing groove is arranged on the middle surface of the machining table, conveying chain plates for positioning and conveying the inner and outer door plates are arranged on the two sides of the missing groove, a riveting seat is arranged above the missing groove, a pushing piece for lifting the corresponding aluminum vehicle body structural member upward is arranged at the end of the conveying chain plate inside the machining table. The inside of the processing table is provided with a multi-segment stroke limiting and clamping unit adjacent to one side of the conveying chain plate, which is used for fixed-point clamping of the glued aluminum vehicle body structure; The limiting and clamping unit comprises a frame plate, two groups of limiting members that move close to or away from each other are slidably installed on the frame plate, each group of limiting members comprises two fixed members, the top of each fixed member is hingedly connected with a positioning seat, a torsional spring is installed at the hinge connection between the fixed member and the positioning seat, and an electric clamp jaw I for clamping the corresponding vehicle body structure is installed on the positioning seat; During the first lifting, the limiting and clamping unit moves with the pushing member, and the aluminum vehicle body structure is kept to be separated upward from the conveying chain plate; The aluminum vehicle body structure is turned to a vertical state and is close to each other, and during the second lifting, the aluminum vehicle body structure is made to enter the riveting seat and is riveted after being attached; When descending, the aluminum vehicle body structure is completed to be attached and riveted; A torsional spring is installed at the hinge connection between each fixed member and the corresponding positioning seat; A positioning head driven by the electric clamp jaw is embedded in the upper part of each fixed member; The outer side of the end of each conveying chain plate is provided with a turning plate driven by a turning motor and pushing the corresponding vehicle body structure to turn upward.

[0008] Further technical improvements of the present application are that a segmented stroke air cylinder is installed below the frame plate, and the segmented stroke air cylinder is installed at a position adjacent to one side of the missing groove; The inside of the frame plate is provided with a bidirectional screw rod for driving the movement of the two groups of limiting members, and the surface of the frame plate is provided with a sliding rail in sliding cooperation with the limiting member.

[0009] Further technical improvements of the present application are that the pushing member comprises a jacking push rod installed adjacent to the end of the conveying chain plate in the processing table, and a pushing plate is installed at the pushing end of the jacking push rod and is in contact with the aluminum vehicle body structure.

[0010] Further technical improvements of the present application are that a pushing and adsorbing unit for fixing the aluminum vehicle body structure is installed in the inner cavity of the riveting seat, the pushing and adsorbing unit comprises a lateral push rod installed on the side wall of the riveting seat, a connecting plate is connected to the pushing end of the lateral push rod, a plurality of adsorbing members are installed on the inner side of the connecting plate, and the adsorbing members are connected to the air suction end of a negative pressure pump.

[0011] Further technical improvements of the present application are that a bottom plate is slidably arranged at the bottom of the connecting plate, a clamping plate protruding outward is arranged on the side of the bottom plate away from the adsorbing members, and a tension spring is sleeved on the side of the bottom plate close to the clamping plate.

[0012] Further technical improvements of the present application are that a rivet feeding seat for directional conveying of rivets is installed on the outer surface of the riveting seat adjacent to the conveying chain plate of the outer plate of the conveying vehicle door, and a storage opening is arranged on the upper surface of the rivet feeding seat. The end of the nail feeding seat extends to the inside of the riveting seat, and the inside of the nail feeding seat is provided with a pressing plate driven by a feeding cylinder; The middle part of the processing table is provided with a fixing frame fixed with the riveting seat.

[0013] Further technical improvements of the present application are that the top of the inner cavity of the riveting seat is provided with a top plate, the lower surface of the top plate is provided with a rotary motor, and the driving end of the rotary motor is provided with a second electric clamping jaw for clamping the riveted aluminum body structure.

[0014] Further technical improvements of the present application are that the lower part of the slot is provided with a positioning chain plate perpendicular to the feeding direction of the conveying chain plate, and a plurality of groups of positioning plates are installed on the positioning chain plate. The riveted aluminum body structure is driven by the second electric clamping jaw to drop to a certain position and enter any group of positioning plates.

[0015] Further technical improvements of the present application are that a plurality of groups of limiting members for cooperating with the holes and grooves on the inner and outer panels of the door are installed on each conveying chain plate, the limiting members include a plurality of bearing columns, and each bearing column is in convex structure.

[0016] Further technical improvements of the present application are that a glue applying chamber is arranged above the middle part of each conveying chain plate, a glue storage barrel is installed on the upper surface of the glue applying chamber, a shunt pipe is connected to the liquid outlet end of the glue storage barrel, and a plurality of liquid outlet ends of the shunt pipe are connected with communication pipes through hoses; A worm is rotatably installed in the inside of the glue applying chamber, the worm is engaged with a plurality of worm gears, and a fixing plate is arranged below the worm, and each worm gear is rotatably arranged with the fixing plate; The worm gear is threadedly connected with the corresponding communication pipe, the bottom of the communication pipe is provided with a glue applying head, and the lower surface of the glue applying head is provided with a sealing gasket for keeping the glue applying state of the aluminum body structure.

[0017] Compared with the prior art, the present application has the following advantages: 1. By setting the limiting clamping unit and the cooperation of the pusher, the electric clamp jaw one preliminarily fixes the aluminum body structure away from the glue area, and the pusher pushes the aluminum body structure upward to lift and separate from the conveying chain plate, while the frame plate follows the lifting to ensure the stable clamping of the electric clamp jaw one to the aluminum body structure; when the aluminum body structure is lifted as a whole, the corresponding body structure is pushed upward by the rotating flap to make the inner and outer panels of the door gradually change from horizontal to vertical and close to each other, which not only ensures the firm fixing position, but also avoids the concave marks or deformation of the aluminum plate caused by excessive compression; in this state, the positioning head enters the positioning seat, and the state of the electric clamp jaw one is stable; the two sets of limiting members move synchronously to close the door inner and outer panels, which is convenient for entering the riveting seat; the second lifting action makes the aluminum body structure closely fit into the riveting seat, and the self-punching riveting process is completed through the riveting action, so that the tool realizes the integrated process of conveying, positioning, turning, fitting and riveting, reduces manual intervention, ensures the production rhythm, avoids the misplacement and deformation of the aluminum plate during the connection process, and improves the assembly quality and production efficiency of the door assembly; 2. After entering the riveting seat, the height of the aluminum body structure is higher than that of the bottom plate, and then the lateral push rod moves inward to make the multiple suction members installed on the connecting plate closely adhere to the surface of the aluminum body structure, and the two bottom plates are forced to stretch elastically, and the structural glue of the aluminum body structure is aligned and adhered, the rivet is accurately sent to the end of the riveting seat by the push of the push plate, and is pressed into the body outer plate, through the body inner plate, to form a riveting connection, firmly fastening the inner and outer plates of the body together, and when the structural glue is not completely cured, the aluminum body structure is adhered and self-punching riveted, and the rivet will extrude part of the glue when punching, forming a sealing ring around the rivet point; the glue layer is compacted under the riveting force to ensure uniform distribution, and the electric clamp jaw two clamps the aluminum body structure downward, and after clamping, the aluminum body structure is pushed away from the inside of the riveting seat, and then the rotating motor starts to rotate the angle of the aluminum body structure, so that it can easily leave from below the missing slot; 3. The worm inside the glue chamber meshes with multiple worm gears, and since the worm gears are threadedly connected with the communication pipes, the corresponding multiple communication pipes are lowered synchronously and straightly, and the hose is elongated to ensure smooth glue feeding of the structural glue. When descending, the glue head is accurately positioned at the predetermined glueing position of the aluminum body structure, and the sealing gasket is used to keep close contact with the aluminum body structure, ensuring that the glue is evenly and accurately applied to the contact area of the aluminum body structure, and ensuring that the glueing thickness of the door inner and outer panels is consistent, accurately controlling the amount and distribution of each glueing, ensuring the uniformity of the glueing layer, thereby improving the quality of the riveting process and reducing the influence of poor glueing on door assembly; 4、Through setting the limiting piece, the hole and groove of the aluminum vehicle body structural member is accurately butted with the bearing column, the dislocation or instability of the structural member in the conveying process is avoided, the limiting piece of the aluminum vehicle body structural member is placed on the conveying chain plate on different sides, so that the aluminum vehicle body structural member and the conveying chain plate have an installation gap, and the electric clamping jaw on the corresponding side is conveniently inserted into the installation gap to clamp the aluminum vehicle body structural member. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to facilitate the understanding of those skilled in the art, the present application is further described below in combination with the drawings.

[0019] Figure 1 It is an external structure diagram of the present application; Figure 2 It is an internal structure connection diagram of the glue applying chamber of the present application; Figure 3 It is an installation structure diagram of the jacking push rod of the present application; Figure 4 It is a partial enlarged view of A in the present application Figure 3 Figure 5 It is a partial installation structure diagram of the electric clamping jaw one and the fixing piece of the present application; Figure 6 It is an internal structure diagram of the riveting seat of the present application; Figure 7 It is a three-dimensional installation structure diagram of the frame plate and the fixing piece of the present application.

[0020] In the figure: 1, machining table; 2, fixed frame; 3, riveting seat; 4, nail feeding seat; 5, conveying chain plate; 6, glue applying chamber; 7, turning plate; 8, positioning chain plate; 9, missing groove; 10, bearing column; 11, glue storage barrel; 12, communication pipe; 13, worm; 14, worm gear; 15, glue applying head; 16, sealing gasket; 17, shunt pipe; 18, frame plate; 19, fixing piece; 20, electric clamping jaw one; 21, segmented stroke air cylinder; 22, jacking push rod; 23, positioning seat; 24, positioning head; 25, suction accessory; 26, lateral push rod; 27, connecting plate; 28, bottom plate; 30, electric clamping jaw two; 31, rotary motor; 32, bidirectional screw rod. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purpose, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0022] Please refer to Figures 1-7 ​As shown, the present application provides a riveting tool for aluminum body structure, comprising a processing table 1, the middle surface of the processing table 1 is provided with a notch 9, both sides of the notch 9 are provided with a conveying chain plate 5 for positioning and conveying the inner and outer door panels, and the upper side of the notch 9 is provided with a riveting seat 3, the inside of the processing table 1 and the end of the conveying chain plate 5 are provided with a pushing piece for lifting the corresponding aluminum body structure upward; The inside of the processing table 1 adjacent to one side of the conveying chain plate 5 is provided with a multi-stroke limiting and clamping unit, which is used for the fixed-point clamping of the glued aluminum body structure; The limiting and clamping unit comprises a frame plate 18, two groups of limiting pieces that move close to or away from each other are slidingly installed on the frame plate 18, each group of limiting pieces comprises two fixed pieces 19, the top of each fixed piece 19 is hingedly connected with a positioning seat 23, a torsional spring is installed at the hinge connection between the fixed piece 19 and the positioning seat 23, and an electric clamp jaw I 20 for clamping the corresponding body structure is installed on the positioning seat 23; Once lifted, the limiting and clamping unit moves with the pushing piece, keeping the aluminum body structure upwardly separated from the conveying chain plate 5; The aluminum body structure is turned to a vertical state and moved close to each other, and is lifted again to enter the riveting seat 3 for bonding and riveting; When descending, the aluminum body structure is bonded and riveted; A torsional spring is installed at the hinge connection between each fixed piece 19 and the corresponding positioning seat 23; A positioning head 24 driven by the electric clamp jaw is embedded in the upper part of each fixed piece 19; A turning plate 7 driven by a turning motor and pushing the corresponding body structure upwardly is installed at the outside of the end of each conveying chain plate 5; During the working process of the tool, the inner and outer door panels are positioned and conveyed by the conveying chain plates 5 on both sides, and structural glue is applied at the fixed points during conveying; In the initial state, as shown, Figure 4 As shown, the electric clamp jaw I 20 in the limiting and clamping unit is in an open state, after gluing, the aluminum body structure reaches the end of the conveying chain plate 5, at this time, the end of the aluminum body structure enters the open electric clamp jaw I 20, and the aluminum body structure is preliminarily fixed by the electric clamp jaw I 20; Then, the aluminum body structure is pushed upwardly by the pushing piece to separate from the conveying restriction of the conveying chain plate 5, and at the same time, the frame plate 18 is lifted to ensure the stable clamping of the aluminum body structure by the electric clamp jaw I 20; When the aluminum body structure is lifted as a whole, and its height is higher than the height of the turnover plate 7, the turnover motor is driven to work, pushing the corresponding body structure upward to turn over, so that the inner and outer panels of the door gradually change from a horizontal state to a vertical state and approach each other, which not only ensures stable positioning, but also avoids indentation or deformation of the aluminum plate due to excessive compression. In this state, the positioning seat 23 and the fixing part 19 rotate around the hinge point, the angle changes, and then the positioning head 24 is oriented into the positioning seat 23, keeping the state of the electric clamping jaw 20 stable. The frame plate 18 of the limiting and clamping unit drives the two sets of limiting parts to move synchronously, and the fixing part 19 of each set of limiting parts is elastically connected to the positioning seat 23 through a torsional spring, so as to make the outer panel of the door and the inner panel of the door close to each other and ensure that the aluminum body structure does not dislocate during turnover and lamination, thereby improving the riveting accuracy. After the aluminum body structure enters the riveting seat 3 in the second lifting action, the aluminum body structure is closely laminated, and the self-punching riveting process is completed through the riveting action. The tool realizes the integrated process of conveying, positioning, turnover, lamination and riveting, reduces manual intervention, ensures the production rhythm, avoids dislocation and deformation of the aluminum plate during connection, and improves the assembly quality and production efficiency of the door assembly.

[0023] As shown in Figure 4 and Figure 7 , the lower part of the frame plate 18 is provided with a segmented stroke cylinder 21, which is installed on one side adjacent to the missing groove 9; The inside of the frame plate 18 is provided with a bidirectional screw 32 for driving the movement of the two sets of limiting parts, and the surface of the frame plate 18 is provided with a sliding rail for sliding cooperation with the limiting part; Initially, the segmented stroke cylinder 21 does not work, and in the first work, the frame plate 18 is pushed to move upward by a small distance, so that it follows the pushing path of the pushing part; When the electric clamping jaw 20 positions the aluminum body structure and is turned over by the external force, the state of the fixing part 19 and the positioning seat 23 is stable, and the two sets of limiting parts are close to the middle part, the frame plate 18 is moved upward again, and the aluminum body structure close to the middle part is conveyed upward into the riveting seat 3.

[0024] As shown in Figure 3 , the pushing part includes a jacking push rod 22 installed in the machining table 1 adjacent to the end of the conveying chain plate 5, and the pushing end of the jacking push rod 22 is provided with a pushing plate in contact with the aluminum body structure; After the aluminum body structure is conveyed to the end by the conveying chain plate 5, the jacking push rod 22 extends in the vertical direction, the pushing plate contacts the bottom of the aluminum body structure and applies an upward jacking force to the aluminum body structure, so that the aluminum body structure as a whole separates from the bearing of the conveying chain plate 5, and the aluminum body structure is lifted to the turnover operation height.

[0025] Referring to Figure 6 As shown in the drawings, the 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 comprises a lateral push rod 26 installed on the side wall of the riveting seat 3, the pushing end of the lateral push rod 26 is connected with a connecting plate 27, the inner side of the connecting plate 27 is provided with a plurality of adsorbing accessories 25, and the adsorbing accessories 25 are connected with the suction end of a negative pressure pump; The bottom of the connecting plate 27 is slidably provided with a bottom plate 28, the side of the bottom plate 28 away from the adsorbing accessories 25 is provided with an outwardly protruding clamping plate, and the side of the bottom plate 28 close to the clamping plate is sleeved with a tension spring; After the aluminum body structure is sent into the riveting seat 3 through the limiting and clamping unit and the height of the aluminum body structure is higher than the height of the bottom plate 28, the lateral push rod 26 is actuated to drive the connecting plate 27 to move inward, so that the plurality of adsorbing accessories 25 installed on the connecting plate 27 are tightly attached to the surface of the aluminum body structure, and the two bottom plates 28 are close to each other under the pushing, and the tension spring is forced to be elastically stretched to generate a restoring force, which not only limits the movement of the bottom plate 28, but also enables the bottom plate 28 to be quickly reset when released, so as to ensure the stable attachment and quick reset of the adsorbing accessories 25; At this time, the negative pressure pump is started to form a negative pressure adsorption force through suction, and the plurality of adsorbing accessories 25 simultaneously act on different regions of the aluminum body structure to reliably fix the aluminum body structure. The negative pressure adsorption can realize the fixation of the aluminum body structure without increasing excessive mechanical pressing force, thereby avoiding the surface indentation or deformation of the outer plate caused by excessive pressing. The plurality of adsorbing accessories 25 are arranged according to the geometric shape and distribution of the door structure, which can adapt to the needs of different vehicle models and different structures and enhance the universality of the tooling.

[0026] Referring to Figure 1 and Figure 6 As shown in the drawings, the outer surface of the riveting seat 3 is provided with a rivet feeding seat 4 for directional feeding of rivets near the conveying chain plate 5 conveying the door outer plate, and the upper surface of the rivet feeding seat 4 is provided with a storage opening; The end of the rivet feeding seat 4 extends to the inside of the riveting seat 3, and the inside of the rivet feeding seat 4 is provided with a pressing plate pushed by a feeding air 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; After the aluminum body structure is clamped and positioned, the rivet feeding seat 4 receives the rivets from the outside through the storage opening and feeds them into the working area of the riveting seat 3; The feeding cylinder drives the pressing plate to move, and the rivet is pushed into the riveting position in the riveting seat 3. At this time, the rivet is accurately sent to the end of the riveting seat 3 by the pushing of the pushing plate, and is pressed into the body outer plate and penetrates through the body inner plate to form a riveting connection. The tail of the rivet expands into a "mushroom head" shape on the body inner plate, tightly fastening the body inner and outer plates together, ensuring the connection strength and stability of the structural member. When the structural adhesive is not completely cured, the aluminum body structural member is attached and self-piercing riveted. The rivet will squeeze some glue when it is punched, forming a sealing ring around the rivet point. The glue layer is compacted under the action of riveting force, ensuring uniform distribution.

[0027] As shown in Figure 6 The top of the inner cavity of the riveting seat 3 is provided with a top plate, and the lower surface of the top plate is provided with a rotary motor 31. The driving end of the rotary motor 31 is provided with an electric clamping jaw two 30 for clamping the aluminum body structural member after riveting. After riveting is completed, the side pushing rod 26 is reset, the electric clamping jaw two 30 clamps the aluminum body structural member downward, and after clamping, the aluminum body structural member 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 aluminum body structural member by an angle, so that it is convenient to leave from below the missing slot 9.

[0028] As shown in Figure 3 The lower part of the missing 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 aluminum body structural member after riveting is pushed by the electric clamping jaw two 30 to drop at a fixed point, and is limited to enter any one of the positioning plates; The electric clamping jaw two 30 pushes the aluminum body structural member to fall vertically until the lower part of the aluminum body structural member is sunk into a certain group of positioning plates on the positioning chain plate 8, ensuring the stability of the position of the structural member, reducing manual intervention, improving work efficiency, ensuring accurate fixing of the aluminum body structural member, and preventing dislocation or asymmetry in the subsequent process.

[0029] As shown in Figure 4 Each conveying chain plate 5 is provided with a plurality of limiting members for cooperating with the holes and grooves on the inner and outer plates of the door, and the limiting members include a plurality of bearing columns 10, each bearing column 10 being a convex structure. The design of the limiting member makes the holes and grooves of the inner and outer plates of the door accurately butt against the bearing columns 10, avoiding dislocation or instability of the structural member during conveying. The aluminum body structural member is placed on the limiting members on the conveying chain plates 5 on different sides, so that there is an installation gap between the aluminum body structural member and the conveying chain plate 5, and the electric clamping jaw one 20 on the corresponding side can conveniently extend into the installation gap to clamp the aluminum body structural member.

[0030] As shown in Figure 1 With Figure 2As shown, 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 side of the worm 13 is provided with a fixed plate, and each worm gear 14 is rotatably arranged 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 in a glue applying and adhering state with the aluminum body structure; The structural glue in the glue storage barrel 11 is distributed to the plurality of communication pipes 12 through the shunt pipe 17, and the worm 13 and the plurality of worm gears 14 in the glue applying chamber 6 are engaged and rotated, and since the worm gear 14 is threadedly connected with the communication pipe 12, at this time, the plurality of corresponding communication pipes 12 are synchronously and linearly lowered, and the hose is elongated, so as to ensure smooth glue feeding of the structural glue, when being lowered, the glue applying head 15 is accurately positioned to the predetermined glue applying position of the aluminum body structure, and the sealing gasket 16 is used to keep adhering with the aluminum body structure, so as to ensure that the glue is uniformly and accurately applied to the contact area of the aluminum body structure when being applied, and at the same time, the glue applying effect (thickness) of the outer plate and the inner plate of the door is consistent, the amount and distribution of each glue applying are accurately controlled, the uniformity of the glue applying layer is ensured, so as to improve the quality of the riveting process and reduce the influence of poor glue applying on the door assembly.

[0031] In use, the aluminum body structure away from the glue applying area is preliminarily fixed by the electric clamping jaw one 20 through the cooperation of the limiting and clamping unit and the pushing piece, the aluminum body structure is pushed upward by the pushing piece, the conveying of the conveying chain plate 5 is limited, and at the same time, the frame plate 18 is lifted upward, so as to ensure the stable clamping of the electric clamping jaw one 20 to the aluminum body structure; when the aluminum body structure is lifted as a whole, the corresponding body structure is pushed upward by the rotating flap 7, so that the inner plate and the outer plate of the door are gradually changed from the horizontal state to the vertical state and are close to each other, so as to ensure the stable position and avoid the concave marks or deformation of the aluminum plate caused by excessive compression; in this state, the positioning head 24 is oriented into the positioning seat 23, and the state of the electric clamping jaw one 20 is kept stable; the two groups of limiting members are synchronously and closely moved, so as to make the outer plate and the inner plate of the door close to each other, and facilitate entering the riveting seat 3; the aluminum body structure is closely adhered into the riveting seat 3 through the secondary lifting action, the self-punching riveting process is completed through the riveting action, the tool realizes the integrated process of conveying, positioning, turning, adhering and riveting, reduces the manual intervention, ensures the production rhythm, avoids the misplacement and deformation of the aluminum plate in the connecting process, and improves the assembly quality and production efficiency of the door assembly. After entering into the riveting seat 3, the aluminum body structure is higher than the height of the bottom plate 28, then the side push rod 26 acts, drives the connecting plate 27 to move inward, makes the multiple suction accessories 25 installed on the connecting plate 27 close to the surface of the aluminum body structure, and the two bottom plates 28 are close to each other under the push, the tension spring is forced to be elastically stretched, the structural glue of the aluminum body structure is aligned and attached, the rivet is accurately sent to the end of the riveting seat 3 by the push of the push plate, and is pressed into the vehicle body outer plate, penetrates through the vehicle body inner plate, forms a riveting connection, firmly fastens the vehicle body inner and outer plates together, and when the structural glue is not completely cured, the aluminum body structure is attached and self-piercing riveting is carried out, the rivet will extrude part of the glue when it is punched, so that a sealing ring is formed around the rivet point; the glue layer is compacted under the riveting force, ensuring uniform distribution, the electric clamping jaw two 30 clamps the aluminum body structure downward, after clamping, the aluminum body structure is pushed away from the inside of the riveting seat 3 for the second time, then the rotating motor 31 starts, rotates the angle of the aluminum body structure, so that it is convenient to leave from below the lack of slot 9; The worm 13 inside the glue coating chamber 6 meshes with multiple worm gears 14 to rotate, since the worm gears 14 are threadedly connected with the communication pipes 12, at this time, the corresponding multiple communication pipes 12 are synchronously lowered in a straight line, and the hose is elongated, ensuring smooth glue feeding of the structural glue. When descending, the glue coating head 15 is accurately positioned to the predetermined glue coating position of the aluminum body structure, and the sealing gasket 16 is used to keep the attachment with the aluminum body structure, ensuring that the glue is uniformly and accurately coated to the contact area of the aluminum body structure during glue coating, while ensuring that the glue coating thickness of the vehicle door outer plate and inner plate is consistent, accurately controlling the amount and distribution of each glue coating, ensuring the uniformity of the glue coating layer, thereby improving the quality of the riveting process and reducing the influence of poor glue coating on vehicle door assembly; By setting the limiting piece, the hole and groove of the aluminum body structure are accurately interfaced with the bearing column 10, avoiding misplacement or instability of the structural member during conveying. The aluminum body structure is placed on the limiting piece on the conveying chain plate 5 on the different sides, so that there is an installation gap between the aluminum body structure and the conveying chain plate 5, which facilitates the extension of the electric clamping jaw one 20 on the corresponding side into the installation gap to clamp the aluminum body structure.

[0032] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application are still within the scope of the technical solution of the present application.

Claims

1. A riveting tool for aluminum vehicle body structural parts, comprising a processing table (1), characterized in that: A notch (9) is provided on the central surface of the processing table (1), and conveyor chains (5) for positioning and conveying the door inner panel and the door outer panel are provided on both sides of the notch (9), and a riveting seat (3) is provided above the notch (9). A pushing member for lifting the corresponding aluminum body structural part upward is provided inside the processing table (1) and at the end of the conveyor chain (5); A multi-stage limit locking unit is provided on one side of the processing table (1) adjacent to the conveyor chain plate (5), and the limit locking unit is used for fixed-point clamping of the glue-coated aluminum body structural parts; The position limiting unit includes a frame plate (18), on which two groups of limiting members that move toward or away from each other are slidably mounted, each group of limiting members including two fixing members (19), a positioning seat (23) being hinged to the top of each fixing member (19), and a torsion spring being mounted at the hinge between the fixing member (19) and the positioning seat (23), and an electric clamping claw (20) for clamping a corresponding vehicle body structural member being mounted on the positioning seat (23); During the first rise, the position limiting unit moves along with the pusher, keeping the aluminum body structure upward and away from the restriction of the conveying chain plate (5); The aluminum body structural parts are turned over to a vertical state and brought close to each other, and then raised a second time so that they enter the riveting seat (3) and fit together before being riveted; When descending, the aluminum body structure parts are bonded and riveted; A torsion spring is installed at the hinge between each fixing member (19) and the corresponding positioning seat (23); A positioning head (24) driven by an electric clamp is embedded in the upper part of each fixing member (19); A flap (7) driven by a flip motor and pushing the corresponding vehicle body structure to flip upward is installed on the outer side of the end of each conveying chain plate (5).

2. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: A segmented stroke cylinder (21) is installed below the frame plate (18), and the segmented stroke cylinder (21) is installed at a position on one side adjacent to the notch (9); A bidirectional screw (32) for driving the two sets of limiting members to move is provided inside the frame plate (18), and a slide rail for slidingly cooperating with the limiting members is provided on the surface of the frame plate (18).

3. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: The pushing member comprises a lifting push rod (22) installed in the processing table (1) at the end adjacent to the conveying chain plate (5), and a pushing plate in contact with the aluminum body structural member is installed at the pushing end of the lifting push rod (22).

4. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: The inner cavity of the riveting seat (3) is equipped with a pushing and adsorption unit for fixing the aluminum body structural member, and the pushing and adsorption unit includes a lateral push rod (26) installed on the side wall of the riveting seat (3), and the pushing end of the lateral push rod (26) is connected to a connecting plate (27), and a plurality of adsorption members (25) are installed on the inner side of the connecting plate (27), and the adsorption members (25) are connected to the suction end of the negative pressure pump.

5. The riveting tool for aluminum vehicle body structural parts according to claim 4, characterized in that: A bottom plate (28) is slidably provided at the bottom of the connecting plate (27), a side of the bottom plate (28) away from the adsorption member (25) is provided with an outwardly protruding clamping plate, and a tension spring is sleeved on a side of the bottom plate (28) close to the clamping plate.

6. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: A rivet delivery seat (4) for directionally delivering rivets is installed on the outer surface of the rivet delivery seat (3) on a side close to the delivery chain plate (5) for delivering the vehicle door outer panel, and a storage opening is provided on the upper surface of the rivet delivery seat (4); The end of the nail feeding seat (4) extends to the interior of the riveting seat (3), and a pressure plate pushed by a feeding cylinder is installed inside the nail feeding seat (4); 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).

7. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: A top plate is provided on the top of the inner cavity of the riveting seat (3) for lifting, and a rotating motor (31) is installed on the lower surface of the top plate. The driving end of the rotating motor (31) is equipped with two electric clamps (30) for clamping the aluminum body structure after pressure riveting.

8. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: A positioning chain plate (8) perpendicular to the feeding direction of the conveying chain plate (5) is provided below the notch (9), and a plurality of positioning plates are installed on the positioning chain plate (8); After riveting, the aluminum body structure is pushed down to a fixed point by the second electric clamp (30) and is limited to enter any set of positioning plates.

9. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: Each conveying chain plate (5) is equipped with a plurality of sets of position limiting members for use with the holes and grooves on the vehicle door inner panel and the vehicle door outer panel. The position limiting members include a plurality of bearing columns (10), and each bearing column (10) is a convex structure.

10. The riveting tool for aluminum vehicle body structural parts according to claim 1, characterized in that: A glue coating chamber (6) is provided above the middle of each conveying chain plate (5), a glue storage barrel (11) is installed on the upper surface of the glue coating chamber (6), a liquid outlet end of the glue storage barrel (11) is connected to a diversion pipe (17), and multiple liquid outlet ends of the diversion pipe (17) are connected to a connecting pipe (12) through a hose; A worm (13) is rotatably mounted inside the coating chamber (6), the worm (13) is meshed with a plurality of worm wheels (14), and a fixed plate is provided below the worm (13), and each worm wheel (14) is rotatably mounted with the fixed plate; The worm gear (14) is threadedly connected to the corresponding connecting pipe (12); a glue coating head (15) is installed at the bottom of the connecting pipe (12); and a sealing gasket (16) is provided on the lower surface of the glue coating head (15) for maintaining a glue-injected bonding state with the aluminum body structural component.

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