A cover welding device supported on a car

Abstract

The present invention provides a cover welding device supported on a car, comprising a conveyor chain and a frame strip symmetrically arranged front and back, a connecting plate equidistantly arranged on the conveyor chain driven by a servo motor, a hinge plate hinged on the connecting plate, a cover seat rotatably arranged in the middle of the hinge plate, a spot welder arranged on the rear side of the conveyor chain, a left support frame and a right support frame arranged on the right side of the spot welder, a cylinder longitudinally arranged between the left support frame and the right support frame, a longitudinal moving part connected to the piston rod end of the cylinder, a lifting assembly and a pressing assembly connected to the right support frame arranged on the left support frame. The advantages of the present invention are: it can continuously and automatically convey the cover seat, complete the welding of the cover and press the bushing up and down through the longitudinal moving part, and then drive the cover seat to rotate to complete the detection, with a high degree of automation and meeting the needs of assembly line production.

Description

Technical Field

[0001] The invention relates to the technical field of automobile upper supports, and in particular to a cover welding device for automobile upper supports. Background Art

[0002] The upper support on the automobile shock absorber is an important part of the shock absorber strut and the car body in the automobile chassis system. Its main function is to connect the chassis suspension system and the car body, transfer loads, and attenuate vibration and noise, thereby effectively attenuating the vibration and noise transmitted from the road surface through the wheels. It can be used in new energy vehicles and self-driving cars. The shock-absorbing upper support requires welding the cup body to the upper end of the support cover, then press-fitting the bushing in the lower groove of the support cover, and then welding the cover under the support cover, such as Figure 6 , Figure 8 As shown, currently the staff places the cover on the lower electrode of the spot welding machine, and then places the support cover with the bushing installed on the cover. The upper electrode of the spot welding machine presses down the support cover to complete the spot welding. After removing the upper support, the tightness between the bushing and the support cover must be tested. Most of the upper supports are tested manually, which has many steps and is time-consuming and labor-intensive, and it is difficult to meet the needs of assembly line production. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a cover welding device supported on a car, which can continuously and automatically convey the cover seat, complete the welding of the cover and press the bushing up and down through the longitudinal moving part, and then drive the cover seat to rotate to complete the detection. It has a high degree of automation and meets the needs of assembly line production.

[0004] The present invention provides a cover welding device supported on an automobile, comprising a conveyor chain 2 and a frame strip 4 symmetrically arranged front and rear, the conveyor chain 2 driven by a servo motor 3 is equidistantly provided with connecting plates 5, the connecting plates 5 are hinged with hinge plates 6, a cover seat 7 is rotatably arranged in the middle of the hinge plates 6, a spot welder 1 is arranged on the rear side of the conveyor chain 2, a left support frame 14 and a right support frame 15 are arranged on the right side of the spot welder 1, a cylinder 8 is longitudinally arranged between the left support frame 14 and the right support frame 15, and a longitudinal moving member 9 is connected to the end of the piston rod of the cylinder 8 The left support frame 14 is provided with a lifting component 10 and a pressing component 11 connected to the right support frame 15. The right support frame 15 is provided with a detection component 13. The longitudinal moving member 9 drives the lower electrode to rise to press the sealing cover through the lifting component 10, and the upper electrode of the spot welding machine 1 presses down the support cover to complete the spot welding. At the same time, the lifting component 10 drives the pressing component 11 to elastically press down the bushing, and the lifting component 10 drives the detection component 13 to press up the bushing, and then the longitudinal moving member 9 drives the sealing seat 7 to rotate and completes the detection through the detection component 13.

[0005] Furthermore, the capping seat 7 is composed of a central rotating drum connected to an upper inclined plate and a lower ring gear, and positioning columns are evenly distributed around the upper end of the inclined plate.

[0006] Furthermore, the longitudinal moving member 9 is composed of a middle connecting strip connecting the long strip 9.1 on the lower side and the rack 9.3 on the upper side. The rack 9.3 cooperates with the ring gear. The rear side of the lower end of the long strip 9.1 is provided with partial teeth 9.2. The front end of the connecting strip is longitudinally provided with a sliding rod 9.4 that is slidably fitted between the left support frame 14 and the right support frame 15.

[0007] Furthermore, the lifting assembly 10 includes a locking gear 10.1 that cooperates with the long strip 9.1 and the partial teeth 9.2. The center of the locking gear 10.1 is keyed with a long shaft 10.2, and the left end of the long shaft 10.2 is keyed with a first cam 10.3. The left side of the left support frame 14 is slidably equipped with a guide column 10.4 that is supported on the working surface of the first cam 10.3, and the lower electrode is arranged above the guide column 10.4.

[0008] Furthermore, the lower electrode is insulated and connected to the guide pillar 10.4 via a connector 10.5.

[0009] Furthermore, the down-pressing assembly 11 includes a first guide rod 11.1 longitudinally arranged on the front and rear sides of the connecting member 10.5, a connecting rod 11.2 is rotatably arranged on the left support frame 14, and guide grooves are opened on the left and right sides of the connecting rod 11.2 along its length direction, and a sliding column 11.3 is slidably arranged on the right support frame 15 so as to move up and down, and an upper pressure column 12 is elastically and telescopically arranged on the lower end of the sliding column 11.3, and second guide rods 11.4 are symmetrically arranged on the front and rear sides of the sliding column 11.3, and the first guide rod 11.1 and the second guide rod 11.4 are slidably fitted in the left and right guide grooves respectively.

[0010] Furthermore, a telescopic groove is provided at the bottom of the slide column 11.3, and the upper pressure column 12 is slidably fitted in the telescopic groove so as to move up and down, and an elastic member is provided between the slide column 11.3 and the upper pressure column 12.

[0011] Furthermore, the detection component 13 includes a second cam 13.1 keyed to the right end of the long axis 10.2, a flat plate is longitudinally arranged at the right support frame 15, a pressing piece 13.2 is slidably and rotatably arranged at the flat plate, a slider 13.3 is slidably and rotatably arranged on the right side of the pressing piece 13.2 and abuts against the lower end surface of the flat plate, a torsion spring is connected between the slider 13.3 and the flat plate, a limit block 13.4 is arranged at the lower end of the flat plate for accommodating the side abutment of the slider 13.3, and a sensor 13.5 is arranged on the right side of the flat plate.

[0012] Furthermore, the pressing member 13.2 comprises a stepped column 13.2.1, the right side of which is vertically provided with a sliding groove 13.2.2 for the sliding block 13.3 to slide, and the lower end of the stepped column 13.2.1 extends to the right rear side to form a sensing strip 13.2.3 for the sensor 13.5 to sense.

[0013] Furthermore, an L-shaped lifting block 16 is provided on the right side of the upper end of the hinged plate 6 , and a guide block 17 is provided on the front frame strip 4 and is located below the spot welding machine 1 and is used to lift the lifting block 16 and the hinged plate 6 .

[0014] The advantages of the present invention are: it can continuously and automatically convey the sealing seat, complete the welding of the sealing cover and press the bushing up and down through the longitudinal moving piece, and then drive the sealing seat to rotate to complete the inspection, with a high degree of automation and meeting the needs of assembly line production; the upper support is continuously and automatically conveyed by the conveying chain and automatically falls down; the long strip can lock the locking gear, part of the teeth can drive the locking gear to rotate, the rack can drive the ring gear and the sealing seat to rotate, and the sliding rod can ensure the forward and backward movement of the longitudinal moving piece; part of the teeth of the longitudinal moving piece drives the locking gear to rotate, and the locking gear rotates with the first cam and the second cam through the long shaft, the first cam drives the guide column to carry the lower electrode to rise to press the sealing cover, the second cam drives the lower pressing piece to rise, the lower pressing piece presses down the lower end surface of the bushing, and at the same time the guide column brings the first guide rod to rise, The first guide rod drives the second guide rod to descend through the connecting rod, and the second guide rod sliding column descends, and the sliding column drives the upper pressure column to elastically press the upper end surface of the bushing. At this time, the bushing is in a vertical state, and the long strip of the longitudinal moving part locks the locking gear, and the upper electrode presses down the support cover to complete the spot welding; the rack of the longitudinal moving part drives the ring gear to rotate, and the ring gear drives the sealing seat, the sealing cover, and the support cover to rotate, so as to detect the tightness of the bushing and the support cover. If it is tight, the bushing, the upper pressure column, and the lower pressure piece rotate with the support cover, and the sensor can sense the sensing bar that has turned into place. If it is not tight, the bushing, the upper pressure column, and the lower pressure piece cannot rotate into place, and the sensor cannot sense the sensing bar; the step column rises to press down the lower end surface of the bushing, and the slider slides along the slide groove and does not move relative to the plate. When the column rotates with the support cover, the slider and the sensing strip rotate with the stepped column. When the column rotates into place, the sensor senses the sensing strip, and when the column cannot rotate into place, the sensor senses the motionless sensing strip. The support cover and the sealing cover with the bushing installed are positioned on the sealing cover seat by the positioning column, and the rotating cylinder can allow the lower electrode and the lower pressure piece to pass through. The rack of the longitudinal moving piece drives the ring gear to rotate, thereby rotating the sealing cover seat, the sealing cover, and the support cover. The hinged plate and the lifting fast pass through the guide block, and the guide block lifts the lifting block, the hinged plate, and the shock-absorbing upper support. At this time, the upper support bushing on the hinged plate is in an inclined state, but the sealing cover and the support cover are in a horizontal state, so that the lower electrode can press against the sealing cover. When the hinged plate and the connecting plate are attached together, the upper support bushing on the hinged plate is in a vertical state, so as to press the bushing up and down and detect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the present invention;

[0017] Figure 3 It is a front view of the present invention;

[0018] Figure 4 A top view of the present invention;

[0019] Figure 5 for Figure 3 AA section view;

[0020] Figure 6 It is a schematic diagram of the structure of the support cover of the present invention when the cover is placed and the bushing is installed;

[0021] Figure 7 It is a front view of the longitudinal moving member of the present invention when it moves backward and is welded and pressed against the bushing;

[0022] Figure 8 It is a cross-sectional view of the longitudinal moving member of the present invention when it moves backward and is welded and pressed against the bushing;

[0023] Fig. 9 for Figure 2 A magnified view of part B;

[0024] Fig.10 for Figure 8 Enlarged view of part C;

[0025] Fig.11 It is a structural schematic diagram of the longitudinal moving member of the present invention;

[0026] Fig.12 It is a schematic structural diagram of the pressing member and the sliding block of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] See also Figures 1 to 12The present invention provides a cover welding device supported on an automobile, which includes a conveyor chain 2 and a frame bar 4 symmetrically arranged front and back. The cross section of the frame bar is concave, so that the upper section of the conveyor chain maintains horizontal transportation. The conveyor chain 2 driven by a servo motor 3 is equidistantly provided with connecting plates 5, and the connecting plates 5 are hinged with hinge plates 6. Magnets are provided at the joints between the hinge plates and the connecting plates, so that the hinge plates and the connecting plates can be magnetically attracted together. At this time, the upper supporting bushing on the hinge plate is in a vertical state, and a cover seat 7 is rotatably provided in the middle of the hinge plate 6. The rotation between the cover seat and the hinge plate has friction, and the cover seat will not rotate during the conveying process. A spot welder 1 is provided on the rear side of the conveyor chain 2, and a spot welder 1 is provided on the right side of the spot welder 1. There are a left support frame 14 and a right support frame 15, and a cylinder 8 is longitudinally arranged between the left support frame 14 and the right support frame 15. The piston rod end of the cylinder 8 is connected to a longitudinal moving part 9. A lifting component 10 and a pressing component 11 connected to the right support frame 15 are arranged on the left support frame 14, and a detection component 13 is arranged on the right support frame 15. The longitudinal moving part 9 drives the lower electrode to rise up to press the sealing cover through the lifting component 10, and the lower electrode is electrically connected to the spot welding machine. The upper electrode of the spot welding machine 1 presses down the support cover to complete the spot welding. At the same time, the lifting component 10 drives the pressing component 11 to elastically press down the bushing, and the lifting component 10 drives the detection component 13 to press up the bushing. Then the longitudinal moving part 9 drives the sealing seat 7 to rotate and completes the detection through the detection component 13. Place the cover on the cover seat on the leftmost side at the top, and then place the support cover with the bushing on the cover, the servo motor drives the conveying chain to convey the connecting plate to the right, and the connecting plate moves right with the hinge plate and the cover seat, and two of the cover seats are respectively at the spot welding machine and the pressing assembly, the cylinder drives the longitudinal moving part to move backward, and the longitudinal moving part drives the lower electrode to rise through the lifting assembly to press the cover, and the upper electrode of the spot welding machine presses down the support cover to complete the spot welding, and at the same time, the lifting assembly drives the pressing assembly to elastically press down the upper end surface of the bushing, and the lifting assembly drives the detection assembly to press the upper end surface of the bushing, and the longitudinal moving part drives the cover seat and the cover and support cover thereon to rotate and complete the detection through the detection assembly; then the longitudinal moving part moves forward and resets, and the longitudinal moving part drives the cover seat and the cover and support cover thereon to reverse and reset, and the longitudinal moving part drives the lower electrode to descend and reset through the lifting assembly, and at the same time, the lifting assembly drives the pressing assembly and the detection assembly to reset, and the conveying chain continues to convey the support cover seat to the right, and the upper support that has completed welding and detection will automatically fall down.

[0029] The capping seat 7 is composed of a rotating drum in the middle connected to an inclined plate on the upper side and a ring gear on the lower side. Positioning posts are evenly distributed around the upper end of the inclined plate. The positioning posts are made of insulating material, such as plastic. The support cover and the capping cover with bushings are positioned on the capping seat through the positioning posts. The rotating drum can allow the lower electrode and the lower pressure piece to pass through. The rack of the longitudinal moving piece drives the ring gear to rotate, thereby rotating the capping seat, the capping cover and the supporting cover.

[0030] See also Fig. 9 , Fig.11The longitudinal moving member 9 is composed of a middle connecting strip connected to a lower strip 9.1 and an upper rack 9.3. The rack 9.3 cooperates with the ring gear. The rear side of the lower end of the strip 9.1 is provided with partial teeth 9.2. The front end of the connecting strip is longitudinally provided with a slide bar 9.4 that is slidably matched between the left support frame 14 and the right support frame 15. The strip can lock the locking gear, the partial teeth can drive the locking gear to rotate, the rack can drive the ring gear and the capping seat to rotate, and the slide bar can ensure the forward and backward movement of the longitudinal moving member.

[0031] The lifting assembly 10 includes a locking gear 10.1 matched with the long strip 9.1 and part of the teeth 9.2. The center of the locking gear 10.1 is keyed with a long shaft 10.2. The left end of the long shaft 10.2 is keyed with a first cam 10.3. The left side of the left support frame 14 is slidably equipped with a guide column 10.4 that is supported on the working surface of the first cam 10.3. The lower electrode is arranged above the guide column 10.4. The longitudinal moving member moves backward, and part of the teeth of the longitudinal moving member drives the locking gear to rotate. The locking gear drives the first cam to rotate through the long shaft. The first cam drives the guide column to carry the lower electrode up to resist the cover (the cover is lifted but not separated from the positioning column). The long strip of the longitudinal moving member locks the locking gear, and the upper electrode presses the support cover down to complete the spot welding. Then the longitudinal moving member moves forward to reset, and part of the teeth of the longitudinal moving member drives the locking gear to reverse. The guide column under the action of gravity brings the lower electrode down to reset, and the upper electrode rises to reset. The support cover and the cover are welded together and fall onto the cover seat.

[0032] The lower electrode is insulatedly connected to the guide post 10.4 through a connector 10.5. The connector is composed of an upper post cover on the upper side connected to a lower post cover on the lower side, the lower electrode is clamped to the insulating upper post cover, and the guide post is clamped to the lower post cover.

[0033] The down-pressing assembly 11 comprises a first guide rod 11.1 longitudinally arranged on the front and rear sides of the connecting member 10.5, a connecting rod 11.2 is rotatably arranged on the left support frame 14, guide grooves are provided on the left and right sides of the connecting rod 11.2 along its length direction, a sliding column 11.3 is slidably arranged on the right support frame 15 so as to move up and down, an upper pressure column 12 is elastically and telescopically arranged on the lower end of the sliding column 11.3, and a second guide rod 11.4 is symmetrically arranged on the front and rear sides of the sliding column 11.3, and the first guide rod 11.1 and the second guide rod 11.4 are slidably fitted in the left and right guide grooves respectively. When the longitudinal moving part moves backward, some teeth of the longitudinal moving part drive the locking gear to rotate. When the guide column carries the lower electrode and the first guide rod to rise, the first guide rod drives the second guide rod to descend through the connecting rod. The second guide rod sliding column descends, and the sliding column drives the upper pressure column to elastically press the upper end surface of the bushing. The inspection component presses down the lower end surface of the bushing. At this time, the bushing is in a vertical state. Then the rack of the longitudinal moving part drives the ring gear to rotate, and the ring gear drives the sealing seat, the sealing cover, and the support cover to rotate. The tightness of the bushing and the support cover is detected by the detection component. If it is tight, the bushing, the upper pressure column, and the lower pressure piece rotate with the support cover. If it is not tight, the bushing, the upper pressure column, and the lower pressure piece cannot rotate into place.

[0034] The bottom of the slide column 11.3 is provided with a telescopic groove, and the upper pressure column 12 is slidably fitted in the telescopic groove to move up and down, and an elastic member is arranged between the slide column 11.3 and the upper pressure column 12. The upper pressure column is rotatably arranged on the slide column, and the upper pressure column elastically presses the upper end surface of the bushing through the elastic member.

[0035] See also Fig. 9 , Fig.12 The detection component 13 includes a second cam 13.1 keyed to the right end of the long axis 10.2, a flat plate is longitudinally arranged at the right support frame 15, a pressing piece 13.2 is slidably and rotatably arranged at the flat plate, a slider 13.3 is slidably arranged on the right side of the pressing piece 13.2 and abuts against the lower end surface of the flat plate, a torsion spring is connected between the slider 13.3 and the flat plate, a limit block 13.4 is arranged at the lower end of the flat plate to accommodate the side abutment of the slider 13.3, and a sensor 13.5 is arranged on the right side of the flat plate. When the longitudinal moving part moves backward, some teeth of the longitudinal moving part drive the locking gear to rotate, the long shaft drives the second cam to rotate, the second cam drives the lower pressing part to rise, the lower pressing part presses the lower end surface of the bushing, the upper pressing column and the lower pressing part press the bushing, and then the locking gear is locked by the long strip of the longitudinal moving part, and the rack of the longitudinal moving part drives the ring gear to rotate, and the ring gear rotates with the sealing seat, the sealing cover, and the supporting cover to detect the tightness of the bushing and the supporting cover. If it is tight, the bushing, the upper pressing column, and the lower pressing part rotate with the supporting cover, and the sensor can sense the lower pressing part that has turned into place. If If it is not tight, the bushing, upper pressure column, and lower pressure piece cannot rotate in place, the sensor cannot sense the lower pressure piece, and the product is unqualified. The sensor transmits the signal to the external sound and light alarm or driver. The driver can drive the marker to mark the unqualified product. The sound and light alarm can be used by the staff to remove the unqualified product. Then the longitudinal moving part moves forward and resets. The rack of the longitudinal moving part drives the ring gear, the cover seat, the cover, and the support cover to reverse. The tightly connected bushing brings the upper pressure column and the lower pressure piece to reverse and reset. The loosely connected bushing and the lower pressure piece are reversed and reset through the torsion spring. The large circles of the first cam and the second cam are both coaxially arranged with the long axis.

[0036] The pressing member 13.2 includes a step column 13.2.1, and a slide groove 13.2.2 for sliding the slider 13.3 is vertically opened on the right side of the step column 13.2.1. The lower end of the step column 13.2.1 extends to the right rear side to form a sensing bar 13.2.3 for sensing by the sensor 13.5. The step column rises to press the lower end surface of the bushing, and the slider slides along the slide groove and does not move relative to the plate. When the bushing and the step column rotate with the support cover, the slider and the sensing bar rotate with the step column. When the sensor is in place, the sensor senses the sensing bar, and when the sensor is not in place, the sensor senses the motionless sensing bar.

[0037] An L-shaped lifting block 16 is provided on the right side of the upper end of the hinge plate 6, and a guide block 17 is provided on the front side frame strip 4, which is located below the spot welding machine 1 and is used to lift the lifting block 16 and the hinge plate 6. The conveyed hinge plate and the lifting block pass through the guide block, and the guide block lifts the lifting block, the hinge plate, and the shock-absorbing upper support. At this time, the upper support bushing on the hinge plate is in an inclined state, but the cover and the support cover are in a horizontal state, so that the lower electrode can press against the cover.

[0038] The specific working process of the present invention is as follows: the cover is placed on the cover seat on the upper leftmost side, and then the support cover with the bushing installed is placed on the cover. The servo motor drives the conveyor chain to convey the connecting plate to the right, and the connecting plate moves right with the hinge plate and the cover seat. Two of the cover seats are respectively at the spot welding machine and the upper pressure column. The hinge plate and the lifting fast pass through the guide block. The guide block lifts the lifting block, the hinge plate, and the shock-absorbing upper support. At this time, the upper support bushing on the hinge plate is in an inclined state, but the cover and the support cover are in a horizontal state, so that the lower electrode can press against the cover. Figure 6 As shown, the cylinder drives the longitudinal moving part to move backward, and some teeth of the longitudinal moving part drive the locking gear to rotate. The locking gear rotates with the first cam and the second cam through the long shaft. The first cam drives the guide column to carry the lower electrode up to resist the sealing cover (the sealing cover is lifted but not separated from the positioning column). The long strip of the longitudinal moving part locks the locking gear, and the upper electrode presses down the support cover to complete the spot welding. The second cam drives the lower pressure part to rise, and the lower pressure part presses down the lower end surface of the bushing. At the same time, the guide column brings the first guide rod to rise, and the first guide rod drives the second guide rod to descend through the connecting rod. The second guide rod sliding column descends, and the sliding column drives the upper pressure column to elastically press the upper end surface of the bushing. At this time, the bushing is in a vertical state, the upper pressure column and the lower pressure part press the bushing, and the locking gear is locked by the long strip of the longitudinal moving part. Figure 7 , 8As shown, then the rack of the longitudinal moving part drives the ring gear to rotate, and the ring gear rotates with the sealing seat, the sealing cover, and the supporting cover to detect the tightness of the bushing and the supporting cover. If it is tight, the bushing, the upper pressure column, and the lower pressure piece rotate with the supporting cover, and the sensor can sense the sensing bar that has turned into place. If it is not tight, the bushing, the upper pressure column, and the lower pressure piece cannot rotate into place, the sensor cannot sense the sensing bar, and the product is unqualified. The sensor transmits a signal to an external sound and light alarm or driver, and the driver can drive the marker to mark the unqualified product. The sound and light alarm can be used by the staff to remove the unqualified product, and then the longitudinal moving part moves forward and resets, and the rack of the longitudinal moving part drives the ring gear and the sealing seat to rotate. The seat, cover and support cover are reversed, the tightly connected bushing brings the upper pressure column and the lower pressure piece to reverse and reset, the loosely connected bushing and the lower pressure piece are reversed and reset through the torsion spring, then some teeth of the longitudinal moving piece drive the locking gear, the first cam and the second cam to reverse, the guide column under the action of gravity brings the lower electrode down to reset (the gravity on the guide column side is much greater than the gravity on the slide column side), the upper electrode rises and resets, the support cover and the cover are welded together and fall onto the cover seat, at the same time the lower pressure piece descends and resets under the action of gravity, the guide column drives the slide column and the upper pressure column to rise and reset through the guide rod and the connecting rod, the conveyor chain continues to transport the cover seat to the right, and the upper support that has completed welding and testing will automatically fall down.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cover welding device supported on a car, characterized in that: It includes a conveyor chain and frame strips symmetrically arranged front and back, the conveyor chain driven by a servo motor is equidistantly provided with connecting plates, the connecting plate is hinged with a hinge plate, a sealing seat is rotatably arranged in the middle of the hinge plate, a spot welder is arranged on the rear side of the conveyor chain, a left support frame and a right support frame are arranged on the right side of the spot welder, a cylinder is longitudinally arranged between the left support frame and the right support frame, a longitudinal moving part is connected to the end of the piston rod of the cylinder, a lifting assembly and a pressing assembly connected to the right support frame are arranged on the left support frame, a detection assembly is arranged on the right support frame, the longitudinal moving part drives the lower electrode to rise up to press the sealing cover through the lifting assembly, the upper electrode of the spot welder presses down the support cover to complete the spot welding, and at the same time the lifting assembly The pressing assembly is driven to elastically press down the bushing, and the lifting assembly drives the detection assembly to press up the bushing, and then the longitudinal moving part drives the sealing seat to rotate and complete the detection through the detection assembly. The sealing seat is composed of a middle rotating cylinder connecting the upper inclined plate and the lower ring gear, and the upper end of the inclined plate is circumferentially evenly provided with positioning columns, and the longitudinal moving part is composed of a middle connecting strip connecting the lower long strip and the upper rack, and the rack cooperates with the ring gear, and the rear side of the lower end of the long strip is provided with partial teeth, and the front end of the connecting strip is longitudinally provided with a sliding rod that is slidably matched between the left support frame and the right support frame, and the lifting assembly includes a locking gear that cooperates with the long strip and the partial teeth, and the center of the locking gear is keyed with a long shaft. The left end of the long shaft is keyed to a first cam, and the left side of the left support frame is slidably equipped with a guide column that is pressed against the working surface of the first cam so as to move up and down. The lower electrode is arranged above the guide column, and the lower electrode is insulated and connected to the guide column through a connecting piece. The pressing down assembly includes a first guide rod longitudinally arranged on the front and rear sides of the connecting piece, a connecting rod is rotatably arranged on the left support frame, and guide grooves are opened on the left and right sides of the connecting rod along the length direction thereof, and a sliding column is slidably equipped with a sliding column that moves up and down at the right support frame, and an upper pressure column is elastically and telescopically arranged at the lower end of the sliding column, and a second guide rod is symmetrically arranged on the front and rear sides of the sliding column, and the first guide rod and the second guide rod are respectively slidably equipped in the left and right guide grooves, and the detection assembly includes a first guide rod keyed to the right side of the long shaft The second cam at the end, a flat plate is longitudinally arranged at the right support frame, a pressing piece is slidably and rotatably arranged at the flat plate, the right side of the pressing piece is slidably equipped with a slider that is against the lower end surface of the flat plate and moves up and down, a torsion spring is connected between the slider and the flat plate, a limit block is arranged at the lower end of the flat plate for the side abutment of the slider, a sensor is arranged on the right side of the flat plate, the pressing piece includes a step column, a sliding groove for accommodating the sliding of the slider is vertically opened on the right side of the step column, the lower end of the step column extends to the right rear side to form a sensing strip for accommodating the sensor sensing, an L-shaped lifting block is arranged on the right side of the upper end of the hinged plate, and a guide block located below the spot welding machine and used to lift the lifting block and the hinged plate is arranged on the front frame bar.

2. A cover welding device for a vehicle support as claimed in claim 1, characterized in that: A telescopic groove is provided at the bottom of the sliding column, and the upper pressure column is slidably fitted in the telescopic groove so as to move up and down, and an elastic member is provided between the sliding column and the upper pressure column.

Images