CN111992868B - Multi-head automatic welding device for sealing gasket of large automobile - Google Patents
Multi-head automatic welding device for sealing gasket of large automobile Download PDFInfo
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- CN111992868B CN111992868B CN202010755501.6A CN202010755501A CN111992868B CN 111992868 B CN111992868 B CN 111992868B CN 202010755501 A CN202010755501 A CN 202010755501A CN 111992868 B CN111992868 B CN 111992868B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K13/00—Welding by high-frequency current heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention discloses an automatic welding device for a large automobile sealing gasket multi-welding clamp, which comprises a machine body and is characterized in that an XY moving assembly, a C-shaped welding clamp assembly, a tooling positioning assembly, a welding electrode grinding assembly, a pneumatic assembly, a water path assembly and an electric control system are arranged on the machine body; the pneumatic assembly provides pneumatic power for the whole device; the waterway assembly provides a cooling function of the whole device; the electric control system controls the action of the whole device and provides a human-computer communication interface; the invention integrates product combination, positioning, welding and electrode timing polishing into one device, can automatically weld the production requirement of the sealing gasket with dozens of welding points, improves the production efficiency, reduces the labor intensity and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of sealing gasket welding devices, in particular to a multi-head automatic welding device for a sealing gasket of a large automobile.
Background
With the development of the automobile industry, customers put more and more strict requirements on the quality of automobiles, and the sealing technology of the cylinder gasket of the automobile engine is also changed day by day as the main sealing product of the automobile engine. The newly-appeared sealing structure needs to weld and assemble a plurality of sealing materials together, and for a large-sized sealing cylinder gasket, the traditional method is to weld point by point on a medium-frequency welding machine after manual assembly until the large-sized sealing cylinder gasket is completed. The welding mode has the following defects:
1. because the gasket is large, the weight is heavy, and the point positions are frequently moved, the loss and the dislocation of the sealing element are easily caused, and great hidden danger is brought to the product quality;
2. the labor intensity of manual point-by-point welding workers is high, and the labor efficiency is low;
3. welding process parameters are not fixed, and the possibility that operators change the welding process parameters at will exists, so that the product quality is influenced, and the qualification rate is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-head automatic welding device for a large automobile sealing gasket; the problems of low operation efficiency, unstable product quality, high cost and low efficiency of the conventional single machine are mainly solved.
The technical scheme provided by the invention is as follows: the multi-head automatic welding device for the large automobile sealing gasket comprises a machine body and is characterized in that an XY moving assembly, a C-shaped welding clamp assembly, a tooling positioning assembly, a welding electrode grinding assembly, a pneumatic assembly, a water path assembly and an electrical control system are arranged on the machine body; the pneumatic assembly provides pneumatic power for the whole device; the waterway assembly provides a cooling function of the whole device; the electric control system controls the action of the whole device and provides a human-computer communication interface;
the XY moving assembly consists of 3X-direction assemblies and 3Y-direction assemblies, each Y-direction assembly is fixedly connected with a pressing block fixed on the X-direction assembly through a pressing plate, each Y-direction assembly is provided with an anti-collision block, each Y-direction assembly is connected with 2 first linear guide rail sliding blocks through 2 connecting plates, the 2 first linear guide rail sliding blocks are matched with 2 first linear guide rails shared by the 3Y-direction assemblies and slide freely, and the 2 first linear guide rails are fixed on the machine body; each X-direction component is fixed on the machine body through an X-direction fixing seat, an X-direction supporting seat and a motor fixing seat;
the C-shaped welding clamp assembly comprises a fixed block, the fixed block is fixedly connected to the front end of a Y-direction moving assembly of the XY moving assembly, 2 second linear guide rail sliding blocks are arranged on the fixed block, the second linear guide rail sliding blocks are assembled with the second linear guide rails, the second linear guide rails are fixedly connected to a C-shaped lower welding electrode sliding block, a third linear guide rail is arranged on the C-shaped lower welding electrode sliding block, 2 third linear guide rail sliding blocks are arranged on the third linear guide rail, the third linear guide rail sliding blocks are fixedly connected with an upper welding electrode sliding block, a cylinder mounting plate is fixedly connected above the C-shaped lower welding electrode sliding block, a driving cylinder is arranged on the cylinder mounting plate, the head of a piston rod of the driving cylinder is connected with the upper welding electrode sliding block through a joint bearing, and the upper welding electrode sliding block is fixedly connected with an upper limit; the upper limiting sliding block is fixedly connected with the upper electrode limiting rod; the upper electrode limiting fixed plate is fixedly connected with the fixed block, the tail part of the driving cylinder is fixedly connected with the lower electrode limiting plate, the lower electrode limiting plate is provided with a guide rod, the lower end of the guide rod is fixedly connected with the upper electrode limiting fixed plate, and the guide rod is provided with an auxiliary spring; the lower welding electrode is sleeved on the guide rod in an adjusting way; used for adjusting the ascending position of the lower welding electrode; the lower end of the lower welding electrode limiting screw is fixedly connected with the upper welding electrode limiting fixing plate, a copper gasket and a buffer gasket are arranged on the lower welding electrode limiting screw, and the descending position of the lower welding electrode is adjusted through the matching of a nut, the copper gasket and the buffer gasket on the lower welding electrode limiting screw; the upper electrode limiting block is fixedly connected to the C-shaped lower electrode sliding block, the lower electrode limiting block slides in the C-shaped lower electrode sliding block groove through an adjusting screw, the upper end of the adjusting screw is fixed on the fixing block, and the position of the C-shaped lower electrode sliding block when falling is limited through the adjusting screw; the upper welding electrode connecting copper strip and the lower welding electrode connecting copper strip are respectively connected with the positive electrode and the negative electrode of the welding transformer; the upper welding electrode assembly is separated from the whole machine body by the insulating plate; the upper welding electrode is fixedly connected with an upper welding electrode fixing block, and the right side of the upper welding electrode fixing block is fixedly connected with an upper welding electrode copper strip connecting block; the upper end of the upper welding electrode fixing block is fixedly connected with an upper welding electrode sliding block through an insulating plate, and the lower welding electrode assembly is fixedly connected with a C-shaped lower welding electrode sliding block; the C-shaped welding clamp assembly is fixedly connected with the front end of the Y-direction moving assembly of the XY moving assembly through a fixing block;
the tool positioning assembly comprises a tool fixing seat, four corners of the tool fixing seat are respectively provided with a bearing with a seat, the bearing with the seat is provided with a transmission shaft, the transmission shaft is fixedly provided with a pressure rod through a key-free expansion sleeve, two ends of the transmission shaft are provided with transmission gears through gear expansion sleeves, the transmission gears are meshed with a transmission rack, the transmission rack is fixed on a moving block, the moving block is connected with one end of a floating joint, and the other end of the floating joint is in threaded connection with the head of a piston rod of a clamping cylinder; the clamping cylinder is arranged on a cylinder support which is fixedly connected with the tool fixing seat; a product positioning jig is arranged on the tool fixing seat and is positioned and installed through a guide pillar and a guide sleeve; the tool positioning component is fixedly connected with the machine body through a tool fixing seat;
the welding electrode grinding assembly comprises a grinding assembly fixing plate, and a grinding assembly bracket is fixedly connected onto the grinding assembly fixing plate; the electrode tip sharpener is fixedly connected with a sharpener moving plate, the sharpener moving plate is fixedly connected with 2 fourth linear guide rail sliding blocks, and the fourth linear guide rail sliding blocks and the fourth linear guide rails are installed together; the fourth linear guide rail is fixedly installed with the grinding assembly bracket; 2 lug plates are arranged at the middle position of the coping device moving plate, the lug plates are hinged with a cylinder lower connecting assembly through a pin shaft, and the cylinder lower connecting assembly is fixedly connected with moving blocks on 2 rodless driving cylinders; buffer mounting plates are mounted at four corners of the grinding assembly bracket, and hydraulic buffers are mounted on the buffer mounting plates; the welding electrode grinding assembly is fixedly connected with the machine body through a grinding assembly fixing plate.
Furthermore, the X-direction assembly comprises an X-direction fixing seat and an X-direction supporting seat, a ball screw is arranged between the X-direction fixing seat and the X-direction supporting seat, the head of the ball screw is connected with one side of a coupler, the other side of the coupler is connected with a first servo motor, the first servo motor is fixed on the motor fixing seat, and the motor fixing seat is fixed on the machine body; a pressing block is arranged on the screw nut and fixedly connected with a pressing plate on the XY moving assembly, and the pressing plate is fixedly connected with the Y-direction assembly; the first servo motor drives the Y-direction component to move through the screw nut, the pressing block and the pressing plate on the XY moving component; the guard shield is fixedly arranged on the X-direction fixed seat and the X-direction supporting seat, and the coupler guard shield is fixed on the machine body to play a role in protection.
Furthermore, the Y-direction assembly comprises a Y-direction fixing bottom plate, the Y-direction fixing seat and the Y-direction supporting seat are both fixed on the Y-direction fixing bottom plate, a screw rod is arranged between the Y-direction fixing seat and the Y-direction supporting seat, the front end of the screw rod is connected with the right side of the Y-direction coupling, the left side of the Y-direction coupling is connected with a second servo motor, the second servo motor is fixedly connected with a motor fixing plate, and the motor fixing plate is fixedly connected with the Y-direction fixing bottom plate; the screw is assembled on the screw rod, a transmission connecting block is arranged on the screw rod, the transmission connecting block is fixedly connected with the Y-direction moving assembly, the front end of the Y-direction moving assembly is provided with a welding transformer, the bottom of the Y-direction moving assembly is fixedly connected with a fifth linear guide rail, the fifth linear guide rail is assembled with 2 fifth linear guide rail sliding blocks, the fifth linear guide rail sliding blocks are fixedly arranged on a Y-direction fixed bottom plate, a second servo motor drives the Y-direction moving assembly to move back and forth, and the Y-direction moving direction is kept by the fifth linear guide rail; the left end of the Y-direction switch bracket is fixed on the motor fixing plate, and the right end of the Y-direction switch bracket is fixed on the Y-direction fixing bottom plate and used for installing a travel switch; the left end of the Y-direction shield is fixedly connected with the motor fixing plate, the right end of the Y-direction shield is fixedly connected with the Y-direction moving assembly and used for protecting the lead screw, the Y-direction assembly is fixedly connected with 2 connecting plates through the bottom of the Y-direction fixing bottom plate, and the side surface of the Y-direction shield is fixedly connected with a pressing block fixed on the X-direction assembly through a pressing plate; the device is pushed by the X-direction assembly, and the X-direction movement direction is kept by the first linear guide rail.
Furthermore, the lower welding electrode assembly comprises a welding electrode holder body, and the central pipe support is assembled with the welding electrode holder body and is fixed in position through the elastic check ring; the central pipe is fixedly connected with a central pipe support through threads, the phi 6 high-temperature resistant pipe is inserted with the central pipe support, the phi 4 high-temperature resistant pipe is inserted on the phi 6 high-temperature resistant pipe, the electrode connecting rod is assembled on the welding electrode holder body through threads, the electrode tip is assembled with an inner taper hole of the electrode connecting rod through an excircle with a taper per se, and the electrode cap is assembled on the electrode connecting rod in a pressing mode; the cooling water is introduced into the center of the whole lower welding electrode assembly during working, the temperature of the welding electrode is guaranteed to fluctuate within a certain range during long-term working, and the welding quality is kept.
The invention has the beneficial effects that: 1. the processing technology of simultaneously welding large sealing gaskets in different areas by a plurality of welding tongs is adopted for the first time in the industry; 2. the welding head automatic grinding technology is adopted, the electrode is ground for a fixed time, and the reduction of welding quality caused by electrode oxidation is prevented; meanwhile, the size of the grinding welding heads is consistent, so that the stability of the quality of welding spots can be ensured. 3. The device integrates the process steps of product combination, positioning, welding and the like into one device, completes the automatic operation of the working procedures of feeding, automatic welding and discharging, and greatly improves the production efficiency; 4. due to the fact that one-time clamping is adopted, the assembled product is placed on the positioning assembly, the situations of loss of product elements, inaccurate positioning and the like are effectively avoided, and quality risks are reduced; 5. the welding requirement for the large sealing gasket effectively reduces the labor intensity of operators.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic view of the structure of the XY moving assembly of the present invention;
FIG. 4 is a cross-sectional view taken along line M-M of FIG. 3;
FIG. 5 is a schematic structural view of the X-moving assembly of the present invention;
FIG. 6 is a schematic diagram of the structure of the Y-shift assembly of the present invention;
FIG. 7 is a schematic structural view of a C-clamp assembly of the present invention;
FIG. 8 is a rear view of FIG. 7;
FIG. 9 is a schematic structural view of the tool positioning assembly of the present invention;
FIG. 10 is a schematic view of the electrode thinning assembly of the present invention;
FIG. 11 is an isometric view of the electrode sharpening assembly of the present invention;
FIG. 12 is a block diagram of a lower electrode assembly of the present invention.
In the figure: 1-machine body, 2-XY moving component, 21-direction component, 210-coupler shield, 211-X direction fixing seat, 212-X direction supporting seat, 213-screw nut, 214-pressing block, 215-motor fixing seat, 216-coupler, 217-shield, 218-first servo motor, 219-ball screw, 22-Y direction component, 2201-second servo motor, 2202-Y direction coupler, 2203-Y direction fixing seat, 2204-screw rod, 2205-screw nut, 2206-transmission connecting block, 2207-Y direction moving component, 2208-Y direction supporting seat, 2209-welding transformer, 2210-fifth linear guide rail sliding block, 2211-Y direction fixing bottom plate, 2212-fifth linear guide rail, 2213-motor fixing plate, 2214-Y direction switch bracket, 2215-Y direction shield, 23-press plate, 24-collision block, 25-connecting plate, 26-first linear guide rail, 27-first linear guide rail slide block, 3-C type welding clamp component, 301-C type lower welding electrode slide block, 302-lower welding electrode component, 3021-welding electrode holder component, 3022-central tube support, 3023-central tube, 3024-phi 6 high temperature resistant tube, 3025-phi 4 high temperature resistant tube, 3026-electrode extension rod, 3027-electrode head, 3028-electrode cap, 3029-elastic retainer ring, 303-upper welding electrode, 304-upper welding electrode fixing block, 305-upper welding electrode slide block, 306-upper welding electrode copper strip connecting block, 307-cylinder mounting plate, 308-driving cylinder, 309-lower welding electrode limiting plate, 310-auxiliary spring, 311-lower welding electrode adjusting sleeve, 312-a guide rod, 313-a fixed block, 314-a second linear guide rail slide block, 315-a second linear guide rail, 316-a third movable slide block, 317-a third linear guide rail, 318-an upper welding electrode limit, 319-an upper welding electrode limit block, 320-an adjusting screw, 321-an upper welding electrode connecting copper strip, 322-a lower welding electrode connecting copper strip, 327-a knuckle bearing, 328-an upper welding electrode limit rod, 329-an upper welding electrode limit sleeve, 330-an upper welding electrode adjusting washer, 331-a nut, 332-a flat key, 333-an upper limit slide block, 334-an upper welding electrode limit fixed plate, 335-a lower welding electrode adjusting screw rod, 336-a copper gasket, 337-a buffer gasket, a 4-tooling positioning component, 401-a seated bearing, 402-a tooling fixed seat, 404-a floating joint, 405-a pressure rod, 406-a cylinder support, 407-a moving block, 408-a key-free expansion sleeve, 409-a transmission shaft, 410-a transmission gear, 411-a gear expansion sleeve, 412-a transmission rack, 413-a clamping cylinder, 414-a product positioning jig, 415-a guide column, 416-a guide sleeve, 5-a welding electrode grinding component, 501-a buffer mounting plate, 502-a welding electrode grinding device, 503-a grinding component bracket, 504-a grinding component fixing plate, 505-a grinding device moving plate, 506-a fourth linear guide rail sliding block, 507-a fourth linear guide rail, 508-a cylinder lower connecting component, 509-a rodless driving cylinder, 510-a cylinder fixing plate, 511-an ear plate, 512-a pin shaft and 6-a pneumatic component, 7-waterway assembly, 8-electric control system.
Detailed Description
For a better understanding and appreciation of the invention, reference will now be made in detail to specific embodiments thereof, which are illustrated in the accompanying drawings; the examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12, a multi-head automatic welding device for a large automobile gasket comprises a machine body 1, wherein an XY moving assembly 2, a C-shaped welding clamp assembly 3, a tool positioning assembly 4, an electrode grinding assembly 5, a pneumatic assembly 6, a water path assembly 7, and an electrical control system 8 are mounted on the machine body 1;
the XY moving assembly 2 comprises 3X-direction assemblies 21 and 3Y-direction assemblies 22, each Y-direction assembly 22 is fixedly connected with a pressing block 214 fixed on the X-direction assembly 21 through a pressing plate 23, and an anti-collision block 24 is arranged on each Y-direction assembly 22 to prevent the two Y-direction assemblies 22 from colliding; each Y-direction component 22 is connected with 2 first linear guide rail sliding blocks 27 through 2 connecting plates 25, the 2 first linear guide rail sliding blocks 27 are matched with 2 first linear guide rails 26 shared by 3Y-direction components 22 and freely slide, and the 2 first linear guide rails 26 are fixed on the machine body 1; each X-direction component 21 is fixed on the machine body 1 through an X-direction fixing seat 211, an X-direction supporting seat 212 and a motor fixing seat 215; each Y-direction component 22 and the C-shaped welding clamp component 3 are fixedly connected with the fixed block 313 and the upper electrode limiting fixed plate 334 through a Y-direction moving component 2207; the welding electrode can complete the motion track of any point in the plane;
the X-direction assembly 21 comprises an X-direction fixing seat 211 and an X-direction supporting seat 212, a ball screw 219 is installed between the two, the head of the ball screw 219 is connected with one end of a coupler 216, the other end of the coupler 216 is connected with a first servo motor 218, the first servo motor 218 is fixed on a motor fixing seat 215, and the motor fixing seat 215 is fixed on the machine body 1; the nut 213 is fixedly connected with the pressing block 214, the pressing block 214 is fixedly connected with the pressing plate 23 on the XY moving component 2 through bolts, and the pressing plate 23 is fixedly connected with the Y-direction component 22, so that the first servo motor 218 drives the Y-direction component 22 to move through the nut 213, the pressing block 214 and the pressing plate 23; the shield 217 is fixedly arranged on the X-direction fixed seat 211 and the X-direction supporting seat 212, and the coupler shield 210 is fixed on the machine body 1 for protection;
the Y-direction assembly 22 comprises a Y-direction fixing bottom plate 2211, a Y-direction fixing seat 2203 and a Y-direction supporting seat 2208 are both fixed on the Y-direction fixing bottom plate 2211, a screw 2204 is installed between the Y-direction fixing seat 2203 and the Y-direction supporting seat 2208, the front end of the screw 2204 is connected with the right side of a Y-direction coupling 2202, the left side of the Y-direction coupling 2202 is connected with a second servo motor 2201, the second servo motor 2201 is fixedly connected with a motor fixing plate 2213, and the motor fixing plate 2213 is fixedly connected with the Y-direction fixing bottom plate 2211; a screw 2205 is assembled on a screw 2204, a transmission connecting block 2206 is installed on the screw 2204, the transmission connecting block 2206 is fixedly assembled with a Y-direction moving assembly 2207, a welding transformer 2209 is installed at the front end of the Y-direction moving assembly 2207, a fifth linear guide rail 2212 is installed at the bottom of the Y-direction moving assembly 2207, the fifth linear guide rail 2212 is assembled with 2 fifth linear guide rail sliding blocks 2210, the fifth linear guide rail sliding blocks 2210 are fixedly installed on a Y-direction fixed base plate 2211, and a second servo motor 2201 drives the Y-direction moving assembly 2207 to move back and forth and is kept in the Y-direction moving direction by the fifth linear guide rail 2212; the left end of the Y-direction switch support 2214 is fixed on the motor fixing plate 2213, and the right end is fixed on the Y-direction fixing bottom plate 2211 and used for mounting a travel switch; the left end of the Y-direction shield 2215 is fixedly connected with the motor fixing plate 2213, the right end of the Y-direction shield is fixedly connected with the Y-direction moving assembly 2207 and used for protecting a lead screw, the Y-direction assembly 22 is fixedly connected with 2 connecting plates 25 through the bottom of the Y-direction fixing bottom plate 2211, and the side surface of the Y-direction assembly is fixedly connected with the pressing block 214 fixed on the X-direction assembly 21 through the pressing plate 23; the pushing of the X-direction component 21 is realized, and the X-direction moving direction is kept by the first linear guide rail 26;
the C-shaped welding clamp assembly 3 comprises a fixed block 313, the fixed block 313 is fixedly connected to the front end of a Y- direction moving assembly 2207, 2 second linear guide rail sliding blocks 314 are installed on the fixed block 313, the second linear guide rail sliding blocks 314 are assembled with second linear guide rails 315 in a matching mode, the second linear guide rails 315 are fixedly connected to a C-shaped lower welding electrode sliding block 301, a third linear guide rail 317 is further installed on the C-shaped lower welding electrode sliding block 301, 2 third moving sliding blocks 316 are installed on the third linear guide rail 317, the third moving sliding blocks 316 are fixedly connected with an upper welding electrode sliding block 305, a cylinder mounting plate 307 is fixedly connected above the C-shaped lower welding electrode sliding block 301, a driving cylinder 308 is installed on the cylinder mounting plate 307, the head of a piston rod of the driving cylinder 308 is connected with the upper welding electrode sliding block 305 through a knuckle bearing 327, the upper welding electrode sliding block 305 is fixedly connected with an upper limiting sliding block 333, and a flat key 332 is adopted for preventing the two from moving relatively; the upper part of the upper limiting sliding block 333 is fixedly connected with an upper welding electrode limiting rod 328 through threads, an upper welding electrode limiting sleeve 329 plays a role in buffering, and an upper welding electrode adjusting washer 330 and a nut 331 play a role in adjusting and locking; the upper welding electrode limiting fixing plate 334 is fixedly connected with the fixing block 313, the tail of the driving cylinder 308 is fixedly connected with the lower welding electrode limiting plate 309, the lower welding electrode limiting plate 309 is provided with a guide rod 312, the lower end of the guide rod 312 is fixedly connected with the upper welding electrode limiting fixing plate 334, the guide rod 312 is provided with an auxiliary spring 310 which plays an auxiliary lifting role, and the lower welding electrode adjusting sleeve 311 is arranged on the guide rod 312 and is used for adjusting the lifting position of the lower welding electrode; a lower welding electrode adjusting screw rod 335 is arranged on the upper welding electrode limiting fixing plate 334, the lower end of the lower welding electrode adjusting screw rod 335 is connected with the upper welding electrode limiting fixing plate 334 through threads, a copper gasket 336 and a buffer gasket 337 are arranged on the lower welding electrode adjusting screw rod 335, and the descending position of the lower welding electrode is adjusted through the cooperation of a nut on the lower welding electrode limiting screw rod 335, the copper gasket 336 and the buffer gasket 337; the upper welding electrode limit 318 is fixedly connected to the C-shaped lower welding electrode slide block 301, and the position of the upper welding electrode is limited to the maximum; the upper welding electrode limiting block 319 slides in the groove of the C-shaped lower welding electrode sliding block 301 through an adjusting screw 320, the upper end of the adjusting screw 320 is fixed on the fixing block 313, and the lowest position of the C-shaped lower welding electrode sliding block 301 during falling can be limited through the adjusting screw 320; the upper welding electrode connecting copper strip 321 and the lower welding electrode connecting copper strip 322 are respectively connected with the anode and the cathode of the welding transformer; the upper welding electrode assembly is separated from the whole machine body by the insulating plate; the upper welding electrode 303 is fixedly connected with an upper welding electrode fixing block 304, and the right side of the upper welding electrode fixing block 304 is fixedly connected with an upper welding electrode copper strip connecting block 306; the upper end of an upper welding electrode fixing block 304 is fixedly connected with an upper welding electrode sliding block 305 through an insulating plate, and a lower welding electrode assembly 302 is fixedly connected with a C-shaped lower welding electrode sliding block 301; the C-shaped welding clamp assembly 3 is fixedly connected with the front end of the Y-direction moving assembly 2207 through a fixed block 313;
the lower electrode assembly 302 includes an electrode holder body 3021, a center tube support 3022 assembled with the electrode holder body 3021 and secured in place by a circlip 3029; the central pipe 3023 is fixedly connected with a central pipe support 3022 through threads, the phi 6 high-temperature resistant pipe 3024 is inserted into the central pipe support 3022, the phi 4 high-temperature resistant pipe 3025 is inserted into the phi 6 high-temperature resistant pipe 3024, the electrode connecting rod 3026 is assembled on the welding electrode holder body 3021 through threads, the electrode tip 3027 is assembled together with the inner taper hole of the electrode connecting rod 3026 through the outer circle with a taper, and the electrode cap 3028 is press-fitted onto the electrode connecting rod 3026; the lower welding electrode assembly 302 is hollow and is provided with a water cooling element, so that the temperature of the welding electrode is in a reasonable range in the welding process, and the welding quality is ensured; when the center of the whole lower welding electrode assembly 302 works, cooling water is introduced, and the temperature of the welding electrode is guaranteed to fluctuate within a certain range when the welding electrode assembly works for a long time; the parts are also provided with corresponding water valves, induction switch frames and other matching elements;
when the driving cylinder 308 acts, the piston rod pushes the upper welding electrode slide block 305 downwards along the third linear guide rail 317 through the joint bearing 327, and after the piston rod is pushed to the position set by the upper welding electrode limiting rod 328, the C-shaped lower welding electrode slide block 301 is pushed by the tail of the driving cylinder 308 to ascend along the second linear guide rail 315, and after the piston rod ascends to the position set by the lower welding electrode adjusting sleeve 311, the piston rod stops; completing the clamping action of the welding tongs;
the tooling positioning assembly 4 comprises a tooling fixing seat 402, 4 belt seat bearings 401 are fixed at four corners of the tooling fixing seat 402, a transmission shaft 409 is arranged on each belt seat bearing 401, a pressing rod 405 is fixed on each transmission shaft 409 through a key-free expansion sleeve 408, transmission gears 410 are arranged at two ends of each transmission shaft 409 through gear expansion sleeves 411, the transmission gears 410 are meshed with transmission racks 412, the transmission racks 412 are fixed on movable blocks 407, the movable blocks 407 are connected with floating joints 404, and the other ends of the floating joints 404 are in threaded connection with the heads of piston rods of clamping cylinders 413; the clamping cylinder 413 is installed on the cylinder support 406, and the cylinder support 406 is fixedly connected with the tool fixing seat 402 through a screw; a product positioning jig 414 is arranged on the tool fixing seat 402, and the product positioning jig 414 is positioned and installed through a guide post 415 and a guide sleeve 416; the tool positioning assembly 4 is fixedly connected with the machine body 1 through a tool fixing seat 402 and is used for supporting, positioning and pressing the cylinder gasket in welding processing, so that the cylinder gasket is kept in a fixed position during welding;
the electrode grinding assembly 5 is arranged below the tool positioning assembly 4, an oxide layer is easily generated in the welding process of the upper electrode and the lower electrode, the oxide layer has poor electric conduction capacity and can influence the welding quality, and the electrode grinding assembly 5 automatically rises after specified welding times and is matched with the C-shaped welding clamp assembly 3 to move so as to finish the grinding work of the upper electrode and the lower electrode; the grinding assembly 5 comprises a grinding assembly fixing plate 504, a grinding assembly bracket 503 is fixedly connected onto the grinding assembly fixing plate, buffer mounting plates 501 are mounted at four corners of the grinding assembly bracket 503, and buffers are mounted on the buffer mounting plates; the front surface of the tip dresser moving plate 505 is fixedly connected with the welding electrode tip dresser 502, the back surface of the tip dresser moving plate 505 is fixedly connected with 2 fourth linear guide rail sliders 506, and the fourth linear guide rail sliders 506 are matched and installed with a fourth linear guide rail 507; the fourth linear guide 507 is fixedly installed with the coping component bracket 503; the middle position of the coping moving plate 505 is provided with 2 ear plates 511, the ear plates 511 are hinged with the cylinder lower connecting assembly 508 through a pin shaft 512, and the cylinder lower connecting assembly 508 is fixedly connected with moving blocks on 2 rodless driving cylinders 509; two ends of the rodless driving cylinder 509 are mounted on a cylinder fixing plate 510, and the cylinder fixing plate 510 is fixed on the coping assembly bracket 503 through screws; the welding electrode grinding assembly 5 is fixedly connected with the machine body 1 through a grinding assembly fixing plate 504;
when the electrode sharpening device works, under the action of the rodless driving cylinder 509, the cylinder lower connecting assembly 508 moves up and down to drive the sharpening device moving plate 505 to move up and down along the fourth linear guide 507, so that the electrode sharpening device 502 is driven to move up and down, the XY moving assembly 2 moves in a matched mode to drive a welding electrode to be positioned at the sharpening device, and the positioning task of sharpening the electrode is completed;
the pneumatic assembly 6, the waterway assembly 7 and the electric control system 8 are the prior art; the pneumatic component 6 provides pneumatic power for the whole device and has the functions of filtering and depressurizing; the water path component 7 provides a cooling function of the whole device, so that the temperature of the upper welding electrode and the lower welding electrode is controlled within a reasonable range when the upper welding electrode and the lower welding electrode work; the electric control system 8 controls the action of the whole device and provides a man-machine communication interface, so that an operator can conveniently modify parameters such as welding and action and monitor the running condition of the whole device in real time.
The invention relates to a multi-head automatic welding device for a large automobile sealing gasket, which has the working principle that:
accurately positioning the large automobile sealing gasket in an X-Y plane by using servo control, dividing the large automobile sealing gasket into a plurality of areas, independently arranging medium-frequency welding tongs in each area, simultaneously working the welding tongs, and quickly welding the positioned gasket; and a water cooling device and an automatic electrode grinding system are provided, so that the labor intensity is greatly reduced, the production efficiency is improved, and the product quality is ensured.
It should be understood that technical features not described in detail in the specification belong to the prior art. Although the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A multi-head automatic welding device for a large automobile sealing gasket comprises a machine body (1), and is characterized in that an XY moving assembly (2), a C-shaped welding clamp assembly (3), a tooling positioning assembly (4), a welding electrode grinding assembly (5), a pneumatic assembly (6), a water path assembly (7) and an electric control system (8) are arranged on the machine body (1); the pneumatic component (6) provides pneumatic power for the whole device; the waterway assembly (7) provides a cooling function of the whole device; the electric control system (8) controls the action of the whole device and provides a human-computer communication interface;
the XY moving assembly (2) consists of 3X-direction assemblies (21) and 3Y-direction assemblies (22), each Y-direction assembly (22) is fixedly connected with a pressing block (214) fixed on the X-direction assembly (21) through a pressing plate (23), each Y-direction assembly (22) is provided with an anti-collision block (24), each Y-direction assembly (22) is connected with 2 first linear guide rail sliding blocks (27) through 2 connecting plates (25), the 2 first linear guide rail sliding blocks (27) are matched with 2 first linear guide rails (26) shared by the 3Y-direction assemblies (22) and can freely slide, and the 2 first linear guide rails (26) are fixed on the machine body (1); each X-direction component (21) is fixed on the machine body (1) through an X-direction fixing seat (211), an X-direction supporting seat (212) and a motor fixing seat (215);
the C-shaped welding clamp assembly (3) comprises a fixed block (313), the fixed block (313) is fixedly connected to the front end of a Y-direction moving assembly (2207) of the XY moving assembly (2), 2 second linear guide rail sliding blocks (314) are arranged on the fixed block (313), the second linear guide rail sliding blocks (314) are assembled with second linear guide rails (315), the second linear guide rails (315) are fixedly connected to C-shaped lower welding electrode sliding blocks (301), third linear guide rails (317) are arranged on the C-shaped lower welding electrode sliding blocks (301), 2 third linear guide rail sliding blocks (316) are arranged on the third linear guide rails (317), the third linear guide rail sliding blocks (316) are fixedly connected with upper welding electrode sliding blocks (305), a cylinder mounting plate (307) is fixedly connected above the C-shaped lower welding electrode sliding blocks (301), a driving cylinder (308) is arranged on the cylinder mounting plate (307), the head of a piston rod of the driving cylinder (308) is connected with the upper welding electrode sliding blocks (305) through joint bearings (327), the upper welding electrode sliding block (305) is fixedly connected with an upper limiting sliding block (333); the upper part of the upper limiting sliding block (333) is fixedly connected with an upper electrode limiting rod (328); an upper electrode limiting fixing plate (334) is fixedly connected with a fixing block (313), the tail of a driving cylinder (308) is fixedly connected with a lower electrode limiting plate (309), a guide rod (312) is arranged on the lower electrode limiting plate (309), the lower end of the guide rod (312) is fixedly connected with the upper electrode limiting fixing plate (334), and an auxiliary spring (310) is arranged on the guide rod (312); the lower electrode adjusting sleeve (311) is arranged on the guide rod (312); used for adjusting the ascending position of the lower welding electrode; the lower end of the lower electrode limiting screw (335) is fixedly connected with the upper electrode limiting fixing plate (334), a copper gasket (336) and a buffer gasket (337) are arranged on the lower electrode limiting screw (335), and the descending position of the lower electrode is adjusted through the matching of a nut on the lower electrode limiting screw (335), the copper gasket (336) and the buffer gasket (337); an upper electrode limit block (318) is fixedly connected to the C-shaped lower electrode slide block (301), a lower electrode limit block (319) slides in a groove of the C-shaped lower electrode slide block (301) through an adjusting screw (320), the upper end of the adjusting screw (320) is fixed on a fixed block (313), and the position of the C-shaped lower electrode slide block (301) during falling is limited through the adjusting screw (320); the upper welding electrode connecting copper strip (321) and the lower welding electrode connecting copper strip (322) are respectively connected with the anode and the cathode of the welding transformer; the upper welding electrode assembly is separated from the whole machine body by the insulating plate; the upper welding electrode (303) is fixedly connected with an upper welding electrode fixing block (304), and the right side of the upper welding electrode fixing block (304) is fixedly connected with an upper welding electrode copper strip connecting block (306); the upper end of the upper welding electrode fixing block (304) is fixedly connected with an upper welding electrode sliding block (305) through an insulating plate, and the lower welding electrode assembly (302) is fixedly connected with a C-shaped lower welding electrode sliding block (301); the C-shaped welding clamp assembly (3) is fixedly connected with the front end of a Y-direction moving assembly (2207) of the XY moving assembly (2) through a fixing block (313);
the tool positioning assembly (4) comprises a tool fixing seat (402), four corners of the tool fixing seat (402) are respectively provided with a bearing with a seat (401), the bearing with a seat (401) is provided with a transmission shaft (409), the transmission shaft (409) is fixedly provided with a pressure lever (405) through a key-free expansion sleeve (408), two ends of the transmission shaft (409) are provided with transmission gears (410) through gear expansion sleeves (411), the transmission gears (410) are meshed with transmission racks (412), the transmission racks (412) are fixed on a movable block (407), the movable block (407) is connected with one end of a floating joint (404), and the other end of the floating joint (404) is in threaded connection with the head of a piston rod of a clamping cylinder (413); the clamping cylinder (413) is installed on a cylinder support (406), and the cylinder support (406) is fixedly connected with the tool fixing seat (402); a product positioning jig (414) is arranged on the tool fixing seat (402), and the product positioning jig (414) is positioned and installed through a guide post (415) and a guide sleeve (416); the tool positioning assembly (4) is fixedly connected with the machine body (1) through a tool fixing seat (402);
the welding electrode grinding assembly (5) comprises a grinding assembly fixing plate (504) which is fixedly connected with a grinding assembly bracket (503); the electrode tip sharpener (502) is fixedly connected with a sharpener moving plate (505), the sharpener moving plate (505) is fixedly connected with 2 fourth linear guide rail sliders (506), and the fourth linear guide rail sliders (506) are mounted together with a fourth linear guide rail (507); the fourth linear guide rail (507) is fixedly installed with the coping component bracket (503); 2 ear plates (511) are arranged in the middle of the coping device moving plate (505), the ear plates (511) are hinged with a cylinder lower connecting assembly (508) through a pin shaft (512), and the cylinder lower connecting assembly (508) is fixedly connected with moving blocks on 2 rodless driving cylinders (509); buffer mounting plates (501) are mounted at four corners of the grinding assembly bracket (503), and hydraulic buffers are mounted on the buffer mounting plates; the welding electrode grinding assembly (5) is fixedly connected with the machine body (1) through a grinding assembly fixing plate (504).
2. The multi-head automatic welding device for the sealing gaskets of the large automobiles according to claim 1, wherein the X-direction assembly (21) comprises an X-direction fixing seat (211) and an X-direction supporting seat (212), a ball screw (219) is arranged between the X-direction fixing seat and the X-direction supporting seat, the head of the ball screw (219) is connected with one side of a coupler (216), the other side of the coupler (216) is connected with a first servo motor (218), the first servo motor (218) is fixed on a motor fixing seat (215), and the motor fixing seat (215) is fixed on the machine body (1); a pressing block (214) is arranged on the screw nut (213), the pressing block (214) is fixedly connected with a pressing plate (23) on the XY moving component (2), and the pressing plate (23) is fixedly connected with the Y-direction component (22); the first servo motor (218) drives the Y-direction component (22) to move through a nut (213), a pressing block (214) and a pressing plate (23) on the XY moving component (2); the shield (217) is fixedly arranged on the X-direction fixed seat (211) and the X-direction supporting seat (212), and the coupler shield (210) is fixed on the machine body (1) to play a role in protection.
3. The multi-head automatic welding device for the large automobile gasket according to claim 1, wherein the Y-direction assembly (22) comprises a Y-direction fixing base plate (2211), a Y-direction fixing seat (2203) and a Y-direction supporting seat (2208) are both fixed on the Y-direction fixing base plate (2211), a screw rod (2204) is installed between the Y-direction fixing seat (2203) and the Y-direction supporting seat (2208), the front end of the screw rod (2204) is connected with the right side of a Y-direction coupling (2202), the left side of the Y-direction coupling (2202) is connected with a second servo motor (2201), the second servo motor (2201) is fixedly connected with a motor fixing plate (2213), and the motor fixing plate (2213) is fixedly connected with the Y-direction fixing base plate (2211); the screw nut (2205) is assembled on the screw rod (2204), a transmission connecting block (2206) is installed on the screw nut, the transmission connecting block (2206) is fixedly connected with the Y-direction moving assembly (2207), the front end of the Y-direction moving assembly (2207) is provided with a welding transformer (2209), the bottom of the Y-direction moving assembly (2207) is fixedly connected with a fifth linear guide rail (2212), the fifth linear guide rail (2212) is assembled with 2 fifth linear guide rail sliding blocks (2210), the fifth linear guide rail sliding block (2210) is fixedly installed on a Y-direction fixed bottom plate (2211), the Y-direction moving assembly (2207) is driven by the second servo motor (2201) to move back and forth, and the Y-direction moving direction is kept by the fifth linear guide rail (2212); the left end of the Y-direction switch support (2214) is fixed on the motor fixing plate (2213), and the right end of the Y-direction switch support is fixed on the Y-direction fixing bottom plate (2211) and is used for installing a travel switch; the left end of a Y-direction shield (2215) is fixedly connected with a motor fixing plate (2213), the right end of the Y-direction shield is fixedly connected with a Y-direction moving assembly (2207) and used for protecting a lead screw, a Y-direction assembly (22) is fixedly connected with 2 connecting plates (25) through the bottom of a Y-direction fixing bottom plate (2211), and the side surface of the Y-direction assembly is fixedly connected with a pressing block (214) fixed on an X-direction assembly (21) through a pressing plate (23); the device is pushed by the X-direction assembly (21), and the X-direction movement direction is kept by the first linear guide rail (26).
4. A large automobile gasket multi-head automatic welding device according to claim 1, characterized in that, the lower welding electrode assembly (302) comprises an electrode holder body (3021), a central tube support (3022) is assembled with the electrode holder body (3021) and is fixed by a circlip (3029); the central pipe (3023) is fixedly connected with a central pipe support (3022) through threads, a phi 6 high-temperature resistant pipe (3024) is inserted into the central pipe support (3022), a phi 4 high-temperature resistant pipe (3025) is inserted into the phi 6 high-temperature resistant pipe (3024), an electrode connecting rod (3026) is assembled on a welding electrode holder body (3021) through threads, an electrode tip (3027) is assembled together with an inner taper hole of the electrode connecting rod (3026) through an excircle with a taper, and an electrode cap (3028) is pressed on the electrode connecting rod (3026); when the center of the whole lower welding electrode assembly (302) works, cooling water is introduced, the temperature of the welding electrode is guaranteed to fluctuate within a certain range when the welding electrode assembly works for a long time, and the welding quality is kept.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010755501.6A CN111992868B (en) | 2020-07-31 | 2020-07-31 | Multi-head automatic welding device for sealing gasket of large automobile |
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| CN202010755501.6A CN111992868B (en) | 2020-07-31 | 2020-07-31 | Multi-head automatic welding device for sealing gasket of large automobile |
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| CN111992868B true CN111992868B (en) | 2021-09-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6338765B1 (en) * | 1998-09-03 | 2002-01-15 | Uit, L.L.C. | Ultrasonic impact methods for treatment of welded structures |
| CN106077930B (en) * | 2016-06-29 | 2019-02-15 | 上汽通用五菱汽车股份有限公司 | A kind of automatic welding device |
| CN106425175A (en) * | 2016-08-30 | 2017-02-22 | 烟台石川密封科技股份有限公司 | Automatic welding device for automobile sealing pad |
| CN109108527A (en) * | 2017-06-22 | 2019-01-01 | 天津玛斯特车身装备技术有限公司 | The spot welding automated system and working method of body of a motor car thermoforming sheet metal component |
| CN108637445A (en) * | 2018-06-22 | 2018-10-12 | 义乌中科机电设备有限公司 | A kind of robot C type servo electrode holder assembly |
| CN111390365A (en) * | 2020-02-21 | 2020-07-10 | 宁波信泰机械有限公司 | Double-end spot welding machine |
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