CN112077426A - Automatic projection welding system and projection welding method for workpiece - Google Patents
Automatic projection welding system and projection welding method for workpiece Download PDFInfo
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- CN112077426A CN112077426A CN202010957673.1A CN202010957673A CN112077426A CN 112077426 A CN112077426 A CN 112077426A CN 202010957673 A CN202010957673 A CN 202010957673A CN 112077426 A CN112077426 A CN 112077426A
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/14—Projection welding
Abstract
An automatic projection welding system and a projection welding method for workpieces belong to the technical field of workpiece welding, and the automatic feeding projection welding system comprises a fixed rack, a storage feeding part, a welding positioning part and a projection welding part, wherein the fixed rack is provided with the storage feeding part and the welding positioning part; the welding positioning part comprises a conveying rail and a telescopic positioning mechanism, the telescopic positioning mechanism is arranged below the conveying rail, and the upper part of the telescopic positioning mechanism is opposite to a welding head of the projection welding part.
Description
Technical Field
The invention relates to the technical field of workpiece welding, in particular to an automatic projection welding system and method for a workpiece.
Background
The nut welding is an operation which often appears in the industry, the conventional automatic nut projection welding machine is divided into a single station and a plurality of stations, the plurality of stations utilize a rotating disc for feeding, the automatic nut projection welding machine is mainly suitable for welding small workpieces, when workpieces needing to be welded are large in the production process, for example, large plates, only one station is arranged on the used projection welding machine, the workpieces need to be manually put in for welding, the workpieces need to be manually taken out after being welded, and the workpieces need to be manually taken out due to the fact that holes in the workpieces need to be aligned with positioning pins when the workpieces are put in, so that a long time is needed to be consumed during feeding and discharging, the work of the automatic nut projection welding machine is stopped, and the production efficiency. In order to improve the working efficiency of the automatic nut projection welding machine, some devices realize automatic positioning welding, but a workpiece needs to be manually placed on a clamp before welding, a worker needs to observe the welding state beside the nut during welding, the workpiece is continuously and manually placed on the clamp according to the welding process, the labor intensity of the worker is increased, and the personnel cost is increased.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic projection welding system for workpieces, which realizes automatic stacking feeding of the workpieces, and after the workpieces to be projection welded are pushed to a welding position, projection welding nuts are automatically aligned to the projection welding positions of the workpieces, and the workpieces after welding can be automatically pushed and transported to an appointed position, so that the continuity of projection welding operation is ensured, the projection welding efficiency is improved, the labor intensity of workers is reduced, and the labor cost is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the automatic projection welding system for the workpieces comprises a fixed rack, a storage feeding part, a welding positioning part and a projection welding part, wherein the storage feeding part and the welding positioning part are arranged on the fixed rack; welding location portion includes delivery track and flexible positioning mechanism, the delivery track sets up the discharge end at storage locating component, delivery track's below sets up flexible positioning mechanism, flexible positioning mechanism's top with the soldered connection of projection welding portion is relative.
Further, store material loading portion still includes material level switching part, material level switching part includes slide rail and switching cylinder, multiunit storage locating component sliding connection be in on the slide rail, the one end of slide rail be provided with the switching cylinder that storage locating component is relative, the piston rod that switches the cylinder links to each other with push rod II, the other end of slide rail is provided with the location dog that prevents the roll-off of storage locating component.
Furthermore, the storage positioning component comprises a sliding plate, limiting columns and a guide frame, the sliding plate is connected to the sliding rail in a sliding mode, the guide frame is arranged at each of two ends of the sliding plate, the guide frame is connected with the sliding plate to form a guide channel, the guide channel is in clearance fit with the push rod I, a plurality of limiting columns are arranged at the upper end of the sliding plate along the circumferential direction of the sliding plate, and a plurality of limiting columns surround to form a storage space for stacking and storing the workpieces to be projection-welded.
Further, the height of the guide channel is larger than half of the thickness of the workpiece to be projection welded.
Further, the conveying track comprises a positioning straight section and a conveying inclined section which are sequentially connected, a positioning hole which is opposite to a projection welding position of a workpiece to be projection welded is formed in the positioning straight section, the telescopic positioning mechanism is arranged below the positioning straight section, a welding head of the projection welding portion is arranged above the positioning straight section, and a storage bin is arranged below an outlet of the conveying inclined section.
Further, flexible positioning mechanism includes locating rack, location cylinder, connecting rod and nut locating pin, the locating rack is installed the bottom of fixed rack, install on the locating rack the location cylinder, the piston rod of location cylinder links to each other with the connecting rod, the end connection of connecting rod the nut locating pin, the nut locating pin passes in proper order the locating hole cup joints the location with the projection welding nut after waiting the projection welding position of projection welding work piece.
Furthermore, the positioning frame comprises two positioning plates arranged in parallel and a supporting rod connected between the two positioning plates along the circumferential direction of the positioning frame, the positioning cylinder is fixed at the center of the positioning plate at the bottom, and the connecting rod penetrates through the two positioning plates; the positioning frame is further provided with a telescopic guide assembly, the telescopic guide assembly comprises a guide rod and a connecting plate, the guide rod is installed on the positioning plate at the bottom, one end, extending out of the bottom positioning plate, of the guide rod is connected with the movable end of the positioning cylinder through the connecting plate, and the upper end of the connecting plate is fixedly connected with the connecting rod.
Furthermore, a fixed block is connected to the movable end of the positioning cylinder and connected with a connecting plate, a signal detection plate extending out of the positioning plate is mounted on one side of the fixed block, a strip-shaped hole is formed in the upper portion of the signal detection plate, a motion sensor is arranged on one side of the mounting plate close to the signal detection plate and comprises a transmitter and a receiver, the transmitter and the receiver are mounted on two sides of the signal detection plate, and a connecting line between a signal transmitting end of the transmitter and a signal receiving end of the receiver and a central line of the strip-shaped hole are in the same plane.
A projection welding method of a workpiece, an automatic projection welding system using the workpiece, comprising the following steps:
1) stacking and positioning a workpiece to be projection-welded on the material storage positioning component, switching the action of the air cylinder, and pushing the material storage positioning component at the corresponding position through the push rod II to enable a guide channel on the material storage positioning component to be opposite to the push rod I;
2) the material pushing cylinder acts to enable the push rod I to penetrate through the guide channel and extend into the bottommost end of the material storage positioning component, the workpiece to be projection welded placed on the bottommost end of the material storage positioning component is pushed to the positioning straight section, and meanwhile the workpiece to be projection welded on the upper portion falls;
3) the positioning cylinder acts to drive the connecting rod and the nut positioning pin to extend upwards, the nut positioning pin extends into the positioning hole in the positioning straight section and then penetrates out of the projection welding position of the workpiece to be projection welded, and the projection welding nut is conveyed to the nut positioning pin by the nut conveyor;
4) the welding head of the projection welding part moves downwards, the nut positioning pin and the connecting rod are pressed downwards for a certain distance, the signal detection board moves downwards, after a signal sent by a transmitter on one side of the signal detection board is received by a receiver on the other side of the signal detection board through the strip-shaped hole, the projection welding nut is positioned on a projection welding position of a workpiece to be projection welded, and the position of a piston rod of the positioning cylinder is fixed;
5) the welding head of the projection welding part welds the projection welding nut on the projection welding position of the workpiece to be projection welded, after the welding is finished, the welding head of the projection welding part is lifted, and meanwhile, the positioning cylinder acts to drive the connecting rod and the nut positioning pin to retract and reset downwards;
6) the material pushing cylinder acts to enable the push rod I to penetrate through the guide channel to stretch into the bottommost end of the material storage positioning component, the material storage positioning component falls on the bottommost end to push a workpiece to be welded to the positioning straight section, meanwhile, the workpiece to be welded is pushed to the conveying inclined section on the positioning straight section, and the welded workpiece falls into the material storage bin due to dead weight.
The invention has the beneficial effects that:
1. the invention can store the workpiece to be projection welded on the storage positioning component in advance in a stacking and positioning way, the push rod I is driven by the push cylinder to extend into the storage position at the bottom of the storage positioning component, thereby realizing automatic stacking and feeding from bottom to top, pushing the workpiece to be projection welded to a welding position, then, after the projection welding position of the workpiece to be projection welded is positioned by the telescopic positioning mechanism, the projection welding nut is sleeved and positioned at the upper end of the telescopic positioning mechanism, the welding head of the projection welding part is pressed downwards to position the projection welding nut on the projection welding position, then, automatic welding is carried out, after welding is finished, the push cylinder drives the push rod I to continue to act, the workpiece to be projection welded is pushed to a designated position by the workpiece to be projection welded, thus, the intermittent automatic feeding of the workpiece, the automatic positioning and welding of the projection welding nut and the intermittent conveying of finished products are realized in a reciprocating way, the continuity of projection welding operation is ensured, and the projection, moreover, the labor intensity of workers is reduced, and the labor cost is reduced.
2. Specifically, storage material loading portion wherein still includes material level switching part, this material level switching part includes slide rail and switching cylinder, and multiunit storage locating component sliding connection drives II extensions of push rod through switching cylinder on the slide rail, makes II promotion multiunit storage locating component of push rod slide on the slide rail, and the direction passageway that makes on the storage locating component that needs the material loading is relative with push rod I on the material pushing cylinder, has realized the free switching of material loading station, has further guaranteed the continuity of projection welding operation.
3. Specifically, the telescopic positioning mechanism comprises a positioning frame, a positioning cylinder, a connecting rod, a nut positioning pin, a signal detection plate and a motion sensor, when a workpiece to be projection-welded is pushed onto a positioning straight section, a projection welding position of the projection-welded workpiece is opposite to a positioning hole of the positioning straight section, at the moment, the positioning cylinder acts to drive the connecting rod and the nut positioning pin to extend upwards, the nut positioning pin penetrates out of the projection welding position of the workpiece to be projection-welded, after the projection-welded nut is conveyed onto the nut positioning pin, a welding head of a projection welding part is pressed for a certain distance, the signal detection plate moves downwards simultaneously, when a signal sent by a transmitter on one side of the signal detection plate is received by a receiver on the other side of the signal detection plate through a strip-shaped hole, the projection-welded nut is positioned on the projection welding position of the workpiece to be projection-welded, then later-stage welding operation is carried out, further improving the quality of projection welding.
In conclusion, the automatic projection welding system for the workpiece realizes intermittent automatic feeding of the workpiece, free switching of feeding stations, automatic positioning welding of projection welding nuts and intermittent conveying of finished products, guarantees continuity of projection welding operation, improves projection welding efficiency, reduces labor intensity of workers and reduces labor cost.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the storage loading part of the present invention disposed on the fixed rack;
FIG. 3 is a schematic structural view of the telescopic positioning mechanism of the present invention;
the labels in the above figures are: 1. the device comprises a fixed rack, 2, a storage feeding part, 21, a storage positioning component, 211, a sliding plate, 212, a limiting column, 213, a guide frame, 214, a guide channel, 22, a material pushing cylinder, 23, a push rod I, 24, a material level switching component, 241, a sliding rail, 242, a switching cylinder, 243, a push rod II, 25, a positioning stop block, 3, a welding positioning part, 31, a conveying rail, 311, a positioning straight section, 312, a conveying inclined section, 32, a telescopic positioning mechanism, 321, a positioning frame, 322, a positioning cylinder, 323, a connecting rod, 324, a nut positioning pin, 325, a guide rod, 326, a connecting plate, 327, a fixed block, 328, a signal detection plate, 329, a motion sensor, 4, a projection welding part, 41, a welding head and 5, a storage bin.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific implementation scheme of the invention is as follows: as shown in fig. 1 to 3, an automatic projection welding system for workpieces comprises a fixed rack 1, a storage feeding part 2, a welding positioning part 3 and a projection welding part 4, wherein the storage feeding part 2 and the welding positioning part 3 are arranged on the fixed rack 1, the projection welding part 4 is arranged on one side of the fixed rack 1, the storage feeding part 2 comprises a storage positioning part 21 and a pushing cylinder 22, workpieces to be projection welded are stacked on the storage positioning part 21, a piston rod of the pushing cylinder 22 is connected with a push rod i 23, the push rod i 23 penetrates through the bottommost part of a storage position of the storage positioning part 21, and pushing is performed through the pushing cylinder 22, so that automatic stacking feeding from bottom to top is realized; the welding positioning part 3 comprises a conveying rail 31 and a telescopic positioning mechanism 32, the conveying rail 31 is arranged at the discharge end of the material storage positioning part 21, the telescopic positioning mechanism 32 is arranged below the conveying rail 31, the upper part of the telescopic positioning mechanism 32 is opposite to a welding head 41 of the projection welding part 4, the projection welding part 4 is the existing welding equipment, after a workpiece to be projection welded is pushed onto the conveying rail 31, the telescopic positioning mechanism 32 acts to position the projection welding position of the workpiece to be projection welded, a projection welding nut is conveyed to the upper end of the telescopic positioning mechanism 32 through the existing nut conveyor, the welding head 41 of the projection welding part 4 is pressed downwards to enable the projection welding nut to be positioned on the projection welding position of the workpiece, the projection welding nut is welded on the projection welding position of the workpiece through the welding head 41, after welding is completed, the air cylinder 22 drives the push rod I23 to continue to act, the workpiece to be projection welded is pushed out from the material storage positioning part 21, the workpiece to be projection welded pushes the welded workpiece to be transported to a designated position, so that intermittent automatic feeding of the workpiece, automatic positioning welding of a projection welding nut and intermittent conveying of a finished product are realized in a reciprocating manner, the continuity of projection welding operation is ensured, the projection welding efficiency is improved, the labor intensity of workers is reduced, and the labor cost is reduced.
Specifically, the material storing and feeding part 2 further comprises a material level switching component 24, the material level switching component 24 comprises a sliding rail 241 and a switching cylinder 242, a plurality of groups of storage positioning components 21 are slidably connected to the sliding rail 241, two groups of storage positioning components 21 are shown in the figure, one end of the sliding rail 241 is provided with the switching cylinder 242 opposite to the storage positioning components 21, a piston rod of the switching cylinder 242 is connected with a push rod ii 243, the other end of the sliding rail 241 is provided with a positioning stop 25 for preventing the storage positioning components 21 from sliding out, when one group of storage positioning components 21 close to the positioning stop 25 is abutted to the positioning stop 25, one end of the outermost group of storage positioning components 21 far away from the positioning stop 25 is opposite to the push rod i 23 on the material pushing cylinder 22, so that all the storage positioning components 21 can be opposite to the push rod i 23 on the material pushing cylinder 22 under the pushing of, the material level can be freely switched, and all the material storage positioning components 21 can complete the feeding operation.
Specifically, the storage positioning component 21 comprises a sliding plate 211, limiting columns 212 and a guide frame 213, the sliding plate 211 is slidably connected to a sliding rail 241, the guide frame 213 is respectively arranged at two ends of the sliding plate 211, a guide channel 214 is formed by connecting the guide frame 213 and the sliding plate 211, the guide channel 214 is in clearance fit with a push rod i 23, the guide channel 214 plays a role in guiding and pushing materials, so that the pushing materials are more stable, the height of the guide channel 214 is greater than half of the thickness of a workpiece to be projection welded, the push rod i 23 is ensured to act on the center of the thickness of the workpiece to be projection welded, the warping or skewing of the workpiece to be projection welded in the pushing process is prevented, the stability of pushing and feeding the workpiece to be projection welded is further improved, the plurality of limiting columns 212 are arranged at the upper end of the sliding plate 211 along the circumferential direction thereof, a storage space for stacking and storing the workpiece to be projection welded is defined between the plurality of limiting, a plurality of threaded holes may be circumferentially provided at the upper end of the sliding plate 211, and the stopper posts 212 may be selectively installed in the corresponding threaded holes according to the size difference of the workpiece.
Specifically, the conveying track 31 therein includes a positioning straight section 311 and a conveying inclined section 312 which are connected in sequence, a positioning hole which is opposite to the projection welding position of the workpiece to be projection welded is arranged on the positioning straight section 311, the positioning hole can be a round hole or a strip-shaped hole, a telescopic positioning mechanism 32 is arranged below the positioning straight section 311, the telescopic positioning mechanism 32 can be positioned on the projection welding position of the workpiece to be projection welded after extending out of the positioning hole, the movement of the workpiece is prevented, and the projection welding nut can be positioned in a sleeved manner, a welding head 41 of a projection welding part 4 is arranged above the positioning straight section 311, the projection welding nut is welded on the projection welding position of the workpiece through the welding head 41, and a storage bin 5 is arranged below an outlet of the conveying inclined section 312 and used for storing a welded finished product.
Specifically, the telescopic positioning mechanism 32 includes a positioning frame 321, a positioning cylinder 322, a connecting rod 323 and a nut positioning pin 324, the positioning frame 321 is installed at the bottom of the fixed rack 1, the positioning cylinder 322 is installed on the positioning frame 321, a piston rod of the positioning cylinder 322 is connected with the connecting rod 323, the end of the connecting rod 323 is connected with the nut positioning pin 324, and the nut positioning pin 324 sequentially penetrates through the positioning hole and the projection welding position of the workpiece to be projection welded and then is sleeved with the projection welding nut for positioning. The positioning frame 321 comprises two positioning plates arranged in parallel and a supporting rod connected between the two positioning plates along the circumferential direction of the positioning frame, the positioning cylinder 322 is fixed at the center of the bottom positioning plate, and the connecting rod 323 passes through the two positioning plates; the positioning frame 321 is further provided with a telescopic guide assembly, the telescopic guide assembly comprises a guide rod 325 and a connecting plate 326, the guide rod 325 is installed on the positioning plate at the bottom, one end of the guide rod 325, extending out of the positioning plate at the bottom, is connected with the movable end of the positioning cylinder 322 through the connecting plate 326, the upper end of the connecting plate 326 is fixedly connected with the connecting rod 323, when a piston rod of the positioning cylinder 322 extends out or retracts, the guide rod 325 and the connecting plate 326 play a role in guiding, and the action of the positioning cylinder 322 is more stable.
Specifically, the movable end of the positioning cylinder 322 is connected with a fixed block 327, the fixed block 327 is connected with a connecting plate 326, one side of the fixed block 327 is provided with a signal detection plate 328 extending out of the positioning plate, the upper portion of the signal detection plate 328 is provided with a strip-shaped hole, one side of the mounting plate close to the signal detection plate 328 is provided with a motion sensor 329, the motion sensor 329 comprises a transmitter and a receiver, the transmitter and the receiver are arranged on two sides of the signal detection plate 328, and a connecting line between a signal transmitting end of the transmitter and a signal receiving end of the receiver and a central line of the strip-shaped. When a workpiece to be projection-welded is pushed onto the positioning straight section 311, the projection welding position of the projection-welded workpiece is opposite to the positioning hole of the positioning straight section 311, at the moment, the positioning cylinder 322 acts to drive the connecting rod 323 and the nut positioning pin 324 to extend upwards, so that the nut positioning pin 324 penetrates out of the projection welding position of the workpiece to be projection-welded, after the projection-welded nut is conveyed onto the nut positioning pin 324, the welding head 41 of the projection welding part 4 is pressed down for a certain distance, and the signal detection plate 328 moves downwards, after a signal sent by a transmitter on one side of the signal detection plate 328 is received by a receiver on the other side of the signal detection plate 328 through a strip-shaped hole, the projection-welded nut is positioned on the projection welding position of the workpiece to be projection-welded, and then later-stage welding operation is performed, so that the projection-welded nut is positioned more stably, the positioning.
The method for projection welding the workpiece by using the automatic feeding projection welding system comprises the following steps:
1) the workpieces to be projection welded are stacked and positioned on the sliding plate 211, the periphery of the workpieces is stopped and limited by the limiting columns 212, the air cylinder 242 is switched to act, the material storage positioning component 21 filled with the workpieces is pushed by the push rod II 243, and the guide channel 214 on the material storage positioning component 21 is opposite to the push rod I23.
2) The pushing cylinder 22 acts to enable the push rod I23 to penetrate through the guide channel 214 and extend into the bottommost end of the storage positioning component 21, the workpiece to be subjected to projection welding placed at the bottommost end of the storage positioning component 21 is pushed to the positioning straight section 311, and meanwhile the workpiece to be subjected to projection welding above the storage positioning component 21 falls to the bottommost end to perform pushing and feeding in the next step.
3) The positioning cylinder 322 acts to drive the connecting rod 323 and the nut positioning pin 324 to extend upwards, the nut positioning pin 324 extends into the positioning hole on the positioning straight section 311 and then penetrates out of the projection welding position of the workpiece to be projection welded, and the projection welding nut is conveyed to the nut positioning pin 324 by the existing nut conveyor.
4) The welding head 41 of the projection welding part 4 moves downwards, the nut positioning pin 324 and the connecting rod 323 are pressed for a certain distance, the signal detection plate 328 moves downwards, when a signal sent by a transmitter on one side of the signal detection plate 328 is received by a receiver on the other side of the signal detection plate 328 through the strip-shaped hole, the projection welding nut is positioned on the projection welding position of a workpiece to be projection welded, and the position of the piston rod of the positioning cylinder 322 is fixed.
5) The welding head 41 of the projection welding part 4 welds the projection welding nut on the projection welding position of the workpiece to be projection welded, after the welding is completed, the welding head 41 of the projection welding part 4 is lifted, and the positioning cylinder 322 acts at the same time to drive the connecting rod 323 and the nut positioning pin 324 to retract and reset downwards.
6) The pushing cylinder 22 acts to enable the push rod I23 to penetrate through the guide channel 214 and extend into the bottommost end of the storage positioning component 21, a workpiece to be subjected to projection welding, which falls onto the bottommost end of the storage positioning component 21, is pushed to the positioning straight section 311, meanwhile, the workpiece to be subjected to projection welding pushes a welded workpiece located on the positioning straight section 311 to the conveying inclined section 312, and the welded workpiece falls into the storage bin 5 due to self weight. The intermittent automatic feeding of the workpieces, the automatic positioning welding of the projection welding nuts and the intermittent conveying of finished products are realized, the continuity of projection welding operation is ensured, the projection welding efficiency is improved, the labor intensity of workers is reduced, and the labor cost is reduced.
In conclusion, the automatic projection welding system for the workpiece realizes intermittent automatic feeding of the workpiece, free switching of feeding stations, automatic positioning welding of projection welding nuts and intermittent conveying of finished products, guarantees continuity of projection welding operation, improves projection welding efficiency, reduces labor intensity of workers and reduces labor cost.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (9)
1. The automatic projection welding system for the workpieces is characterized by comprising a fixing rack (1), a storage feeding part (2), a welding positioning part (3) and a projection welding part (4), wherein the storage feeding part (2) and the welding positioning part (3) are arranged on the fixing rack (1), the projection welding part (4) is arranged on one side of the fixing rack (1), the storage feeding part (2) comprises a storage positioning component (21) and a material pushing cylinder (22), the workpieces to be projection welded are stacked on the storage positioning component (21), a piston rod of the material pushing cylinder (22) is connected with a push rod I (23), and the push rod I (23) penetrates through the bottommost part of a storage position of the storage positioning component (21); welding position portion (3) are including delivery track (31) and flexible positioning mechanism (32), delivery track (31) set up the discharge end at storage locating component (21), the below of delivery track (31) sets up flexible positioning mechanism (32), the top of flexible positioning mechanism (32) with soldered connection (41) of projection welding portion (4) are relative.
2. An automated projection welding system for workpieces according to claim 1, wherein: store material loading portion (2) and still include material level switching part (24), material level switching part (24) include slide rail (241) and switch cylinder (242), multiunit material storage locating component (21) sliding connection be in on slide rail (241), the one end of slide rail (241) be provided with material storage locating component (21) relative switch cylinder (242), the piston rod that switches cylinder (242) links to each other with push rod II (243), the other end of slide rail (241) is provided with location dog (25) that prevent material storage locating component (21) roll-off.
3. An automated projection welding system for workpieces according to claim 2, wherein: the storage positioning component (21) comprises a sliding plate (211), limiting columns (212) and a guide frame (213), the sliding plate (211) is connected to the sliding rail (241) in a sliding mode, the two ends of the sliding plate (211) are respectively provided with the guide frame (213), the guide frame (213) is connected with the sliding plate (211) to form a guide channel (214), the guide channel (214) is in clearance fit with the push rod I (23), the upper end of the sliding plate (211) is provided with a plurality of limiting columns (212) along the circumferential direction of the upper end, and a plurality of limiting columns (212) are enclosed to be stacked and stored in a storage space of workpieces to be projection-welded.
4. An automated projection welding system for workpieces according to claim 3, wherein: the height of the guide channel (214) is more than half of the thickness of the workpiece to be projection welded.
5. The automatic projection welding system of a workpiece according to any one of claims 1 to 4, characterized in that: the conveying track (31) comprises a positioning straight section (311) and a conveying inclined section (312) which are sequentially connected, a positioning hole which is opposite to a projection welding position of a workpiece to be projection welded is arranged on the positioning straight section (311), the lower portion of the positioning straight section (311) is provided with the telescopic positioning mechanism (32), the welding head (41) of the projection welding part (4) is arranged above the positioning straight section (311), and the storage bin (5) is arranged below an outlet of the conveying inclined section (312).
6. An automated projection welding system for workpieces according to claim 5, wherein: the telescopic positioning mechanism (32) comprises a positioning frame (321), a positioning cylinder (322), a connecting rod (323) and a nut positioning pin (324), the positioning frame (321) is installed at the bottom of the fixed rack (1), the positioning cylinder (322) is installed on the positioning frame (321), a piston rod of the positioning cylinder (322) is connected with the connecting rod (323), the connecting rod (323) is connected with the end of the nut positioning pin (324), and the nut positioning pin (324) penetrates through the positioning hole and the projection welding position of the workpiece to be projection welded and then is sleeved with the projection welding nut for positioning.
7. An automated projection welding system for workpieces according to claim 6, wherein: the positioning frame (321) comprises two positioning plates which are arranged in parallel and a supporting rod which is connected between the two positioning plates along the circumferential direction of the positioning frame, the positioning cylinder (322) is fixed at the center of the positioning plate at the bottom, and the connecting rod (323) penetrates through the two positioning plates; still be provided with flexible direction subassembly on locating rack (321), flexible direction subassembly includes guide arm (325) and connecting plate (326), install on the locating plate of bottom guide arm (325), the one end that bottom locating plate was stretched out in guide arm (325) is passed through connecting plate (326) and is linked to each other with the expansion end of location cylinder (322), the upper end and the connecting rod (323) of connecting plate (326) are fixed continuous.
8. An automated projection welding system for workpieces according to claim 6, wherein: the movable end of the positioning cylinder (322) is connected with a fixed block (327), the fixed block (327) is connected with a connecting plate (326), one side of the fixed block (327) is provided with a signal detection plate (328) extending out of the positioning plate, the upper portion of the signal detection plate (328) is provided with a strip-shaped hole, a motion sensor (329) is arranged on one side of the mounting plate close to the signal detection plate (328), the motion sensor (329) comprises a transmitter and a receiver, the transmitter and the receiver are arranged on two sides of the signal detection plate (328), and a connecting line between a signal transmitting end of the transmitter and a signal receiving end of the receiver and a central line of the strip-shaped hole are in the same plane.
9. A projection welding method of a workpiece using the automatic projection welding system of a workpiece as set forth in any one of claims 1 to 8, characterized in that: the method comprises the following steps:
1) stacking and positioning a workpiece to be projection welded on the storage positioning component (21), switching the cylinder (242) to act, pushing the storage positioning component (21) at the corresponding position through the push rod II (243), and enabling a guide channel (214) on the storage positioning component (21) to be opposite to the push rod I (23);
2) the material pushing cylinder (22) acts to enable the push rod I (23) to penetrate through the guide channel (214) and extend into the bottommost end of the material storage positioning component (21), the workpiece to be projection welded placed on the bottommost end of the material storage positioning component (21) is pushed to the positioning straight section (311), and meanwhile the workpiece to be projection welded above the material storage positioning component falls;
3) the positioning cylinder (322) acts to drive the connecting rod (323) and the nut positioning pin (324) to extend upwards, the nut positioning pin (324) extends into the positioning hole in the positioning straight section (311) and then penetrates out of the projection welding position of the workpiece to be projection welded, and the projection welding nut is conveyed to the nut positioning pin (324) by the nut conveyor;
4) a welding head (41) of the projection welding part (4) moves downwards, a nut positioning pin (324) and a connecting rod (323) are pressed for a certain distance, a signal detection plate (328) moves downwards, when a signal sent by a transmitter on one side of the signal detection plate (328) is received by a receiver on the other side of the signal detection plate (328) through a strip-shaped hole, a projection welding nut is positioned on a projection welding position of a workpiece to be projection welded, and the position of a piston rod of a positioning cylinder (322) is fixed;
5) the welding head (41) of the projection welding part (4) welds the projection welding nut on the projection welding position of the workpiece to be projection welded, after the welding is finished, the welding head (41) of the projection welding part (4) is lifted, and meanwhile, the positioning cylinder (322) acts to drive the connecting rod (323) and the nut positioning pin (324) to retract and reset downwards;
6) the material pushing cylinder (22) acts to enable the push rod I (23) to penetrate through the guide channel (214) to stretch into the bottommost end of the material storage positioning component (21), the material storage positioning component (21) is dropped onto the bottommost to-be-projection-welded workpiece to be pushed to the positioning straight section (311), and meanwhile, the to-be-projection-welded workpiece is located on the positioning straight section (311), the workpiece after welding is pushed to the conveying inclined section (312), and the welded workpiece drops downwards into the material storage bin (5) due to dead weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010957673.1A CN112077426A (en) | 2020-09-11 | 2020-09-11 | Automatic projection welding system and projection welding method for workpiece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010957673.1A CN112077426A (en) | 2020-09-11 | 2020-09-11 | Automatic projection welding system and projection welding method for workpiece |
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| CN112077426A true CN112077426A (en) | 2020-12-15 |
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| CN202010957673.1A Pending CN112077426A (en) | 2020-09-11 | 2020-09-11 | Automatic projection welding system and projection welding method for workpiece |
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| CN115178844A (en) * | 2022-07-12 | 2022-10-14 | 江苏北人智能制造科技股份有限公司 | Upper and lower piece automation device of resistance welding part and resistance welding device comprising same |
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Application publication date: 20201215 |