KR101146712B1 - Automatic resistance welding apparatus and method for link rod - Google Patents

Abstract

The present invention relates to a resistance welding automation apparatus and method for a link rod that can reduce production costs and improve productivity by automating the welding of the sleeve to the pipe.
The present invention, in order to automate the welding of the sleeve and the pipe, the first clamper clamps the pipe from the pipe supply to the pipe loader, the pipe loader rotates the pipe 90 degrees and advances to load the lower electrode of the welder The left and right transfer shuttle receives the sleeve from the sleeve supply unit and loads the sleeve to the lower electrode of the welding machine, and the joint between the sleeve and the pipe is melted by the resistance heat generated by energizing the upper electrode and the lower electrode in the projection welding machine and the pressing force of the welding pressure cylinder. According to the welding, the pipe welded at both ends of the pipe is unloaded by the pipe loader and discharged by the second clamper to the product load, so that all processes from feeding, conveying and loading, welding and discharging the pipe and sleeve Provided are a resistance welding automation apparatus and method for a link rod that is automated.

Description

Automatic resistance welding apparatus and method for link rods

The present invention relates to an automated resistance welding apparatus and method for a link rod, and more particularly, an automatic resistance welding apparatus for a link rod that can reduce production costs and improve productivity by automating the welding of a sleeve to a pipe. It is about a method.

In general, a plurality of link rods are used in automobiles to connect parts and components. The link rod 10 has a structure in which cylindrical sleeves 12 are welded to both ends of the pipe 11 as shown in FIG. 1. consist of.

By the way, in the conventional welding method, the sleeve 12 is arc-welded and CO ₂ welded to both ends of the pipe 11 by hand, but in the case of manual welding in this way, the production cost is increased due to high wages, and the welding time and defect rate are There was a problem in that the productivity is reduced.

Invented in view of the above-mentioned point of the present invention, by automating the welding of the sleeve and the pipe by resistance welding, the resistance welding automation device and method for a link rod that can reduce the production cost due to automation, and improve the productivity The purpose is to provide.

The present invention to automate the welding operation of the sleeve and the pipe,

The first clamper clamps the pipe from the pipe supply and delivers it to the pipe loader.The pipe loader rotates the pipe 90 degrees and advances to load the lower electrode of the welder.The left and right transfer shuttle receives the sleeve from the sleeve supply and receives the sleeve from the lower part of the welder. The welding is performed by melting the junction of the sleeve and the pipe by the resistance heat generated by energizing the upper electrode and the lower electrode in the projection welding machine and the pressing pressure of the welding pressure cylinder in the projection welding machine. Provides a resistance welding automation device and method for a link rod, which is unloaded by a pipe loader and discharged to a product load by a second clamper, so that all processes from supplying, transferring and loading, welding, and discharging pipes and sleeves are automated. do.

According to the resistance welding automation device and method for a link rod according to the present invention, all processes from the supply, transfer, loading, welding and discharging of the pipe and sleeve are performed by using the automated equipment without the manpower, There are advantages to saving and improving productivity.

1 is a plan view and a side view showing a link rod
Figure 2 is a plan view of the welding automation device for a link rod according to an embodiment of the present invention
3 is a front view of FIG. 2
4 is a side view of FIG. 2
5 to 7 is a side view showing the supply state of the pipe according to the present invention
8 is a plan view showing a conveying direction of the first clamp according to the present invention
9 to 11 is a side view showing the operating state of the pipe loader according to the invention
12 to 16 is a front view showing the operating state of the welding machine according to the present invention
17 is a plan view showing a discharge state of the product after welding according to the present invention
18 is a flowchart schematically showing a welding automation method for a link rod according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to an apparatus for automatically welding the link rod 10 and the sleeve 12.

The present invention provides a pipe supply unit 100 for supplying a pipe 11, a sleeve supply unit 300 for supplying a sleeve 12, and a first clamper for clamping the pipe 11 to load the welder 500 ( 200 and the pipe loader 400, a carrier for transferring the sleeve 12 to the welding machine 500 to load the loading rod 550 of the welding machine 500, and the heat of the pipe 11 using a resistance heat Projection welder 500 (hereinafter referred to as “welder 500”) for welding the sleeve 12 to both ends, and the welded pipe 11 and the sleeve 12 to the product loading table 600. It includes a second clamper 250 for discharging.

Looking at the overall layout with reference to the plan view of the projection welding apparatus according to the present invention, the pipe supply unit 100 and the first clamper 200 on the right front side, the sleeve supply unit 300 on the right rear side, the pipe loader (in the middle front) 400, the welding machine 500 in the middle back, the product loading stand 600 in the left front, and the 2nd clamper 250 are arrange | positioned in the left middle.

The pipe supply unit 100 includes a storage container 110 in which a plurality of pipes 11 are stored, a lifter for receiving the pipe 11 from the storage container 110, and transporting the pipes 11 to the first clamper 200. It includes a lower moving unit 140, the reservoir 110, the lifter, the guide unit 130 and the elevating moving unit 140 is fixed to one worktable.

The reservoir 110 is composed of a bottom portion formed inclined downward in the conveying direction of the pipe 11, and a pair of side panels installed upright from the bottom portion.

The bottom portion is inclined downward with respect to the horizontal plane, the pipe 11 is formed in a circular shape, the pipe 11 is rolled down by gravity along the inclined surface of the bottom portion.

The side panel is movable left and right by the first ball screw 101 and the manual front wheel 102, when the manual front wheel 102 is turned in one direction, the right side screw coupled side panel and the left side screw coupled side panel are mutually The width of the storage container 110 is narrowed and the width of the storage container 110 is widened by turning the manual front wheel 102 to the other direction, thereby widening the width of the storage container 110 according to the length of the pipe 11. The width can be adjusted.

The lifter receives the first and second staircases 121 and 122 formed stepwise and the pipe 11 falling down from the storage container 110 and moves up and down to the top of the first and second staircases 121 and 122. The first and second lifters 120a and 120b are placed.

The first and second lifters 120a and 120b are lifted up and down by the first vertical movement cylinder 123, and the inclined surfaces of the first and second lifters 120a and 120b are pipes 11. It is formed to be inclined downward in the conveying direction of the first lifter (120a) located at the lower end of the reservoir 110, while receiving the pipe (11) falling off the reservoir 110, the first lifter (120a) ) Rises along the vertical plane of the first staircase 121 to place the pipe 11 up to the top of the first staircase 121.

The inclined surface is also formed to be inclined downward in the conveying direction of the pipe 11 at the upper end of the first staircase 121, so that the pipe 11 lifted by the first lifter 120a is the inclined surface of the first staircase 121 Rolling along the to move to the second lifter (120b), the second lifter (120b) rises along the vertical surface of the second staircase 122, the pipe 11 to the top of the second staircase 122 Put it up.

The guide unit 130 serves to transfer and guide the pipe 11 from the storage container 110 to the first clamper 200, and to be paired by two panels and side by side in pairs at regular intervals. Is placed.

First and second accommodating grooves 130a and 130b are formed at the upper end of the guide part 130, and one side of the accommodating groove is formed to be inclined at a predetermined angle so that the pipe 11 moves along the inclined surface of the accommodating groove. It is possible, and each receiving groove (130a, 130b) is used as a place to wait until the pipe 11 is transported by the first clamper (200).

The lifting unit 140 is disposed between the two panels in the guide unit 130, the first and second inclined surface is formed in the upper end of the lifting unit 140 in the wedge shape, the second upper and lower The pipe 11 is lifted up and down by the moving cylinder 141 to move from the first accommodation groove 130a of the guide portion 130 to the second accommodation groove 130b.

The pipe 11 accommodated in the second accommodating groove 130b is moved to the transfer lifter 150, and the transfer lifter 150 is moved up and down by the third vertical movement cylinder 151 and the transfer lifter 150. An inclined surface is formed at the upper end of the), and a stopper portion protruding upward from the end of the inclined surface is formed, and the pipe 11 moved to the transfer lifter 150 is rolled up by the inclined surface, and then hangs on the stopper portion to wait. It is conveyed by the first clamper 200.

The first clamper 200 includes a pair of first fingers 210 holding the pipe 11 by rotating around the rotation shaft 211, a fixing part 212 supporting the first fingers 210, and Supporting the guide bar 225 and the guide bar 225 for mounting the lifting unit 212 and the lifting and lowering of the Shanghai copper frame 230, the guide bar 225 to guide the transport of the Shanghai copper frame 230 in the vertical direction While moving to the left and right moving frame 224, and installed on the bottom of the left and right moving frame 224 includes an LM guide (LM guide; Linear Mmotion guide) to guide the transfer of the left and right moving frame 224 in the left and right direction do.

The rotating shaft 211 is connected to the motor is rotated in the vertical direction by the motor, so that the pair of first finger 210 is rotated 90 degrees by the rotating shaft 211, while the pipe 11 is opened and folded Clamp.

The left and right transfer motor 220 is mounted to the left and right moving frame 224, the pinion gear 221 is connected to the left and right transfer motor 220, and the pinion gear 221 is a rack gear installed on the base plate 223 ( 222 is coupled to the pinion gear 221 rotates and moves along the rack gear 222 when the motor is operated, so that the left and right moving frame 224 from the left and right feed motor 220 and the rack with the pinion gear 221 The driving force is transmitted to the left and right through the gear 222, and the left and right moving frame 224 is guided by the LM guide.

The shandong copper frame 230 is conveyed in the up and down direction by the shanghai copper cylinder 231, guided by a guide bar 225.

The first clamper 200 is moved vertically by the Shanghai copper frame 230, and is moved to the left and right by the left and right moving frame 224, receives the pipe 11 from the pipe supply unit 100 pipe loader ( 400).

The pipe loader 400 may include a second finger 410 receiving the pipe 11 from the first clamper 200, a support part 412 supporting the second finger 410, and the support part 412. It includes a Shanghai East Slider 480 and a Shanghai East Motor 470 to move the shanghai, and a rotation motor 450 and the forward and backward movement cylinder 420 to rotate and back and forth the support 412.

The second finger 410 of the pipe loader 400 is composed of two more pairs than the first finger 210 of the first clamper 200, the second conveying the pipe 11 lying down horizontally Clamping both sides of the pipe 11 with the first finger 210 of the first clamper 200 in the center, rotating the clamped pipe 11 by 90 degrees, and then moving forward to bring the welder 500 toward the welder 500.

The second finger 410 of the pipe loader 400 is clamped by two first rotary shafts 411 arranged in parallel and the pipe 11 is clamped, and the second finger 410 is unfolded and the pipe is unfolded. (11) is unclamped.

The second rotating shaft 430 is connected to the support portion 412, the second rotating shaft 430 is supported by the support block 440, and the front and rear movement cylinder 420 is mounted on the upper portion of the support block 440 The front and rear movement cylinder 420 is connected to the second rotary shaft 430 to advance the second rotary shaft 430.

In addition, the second rotating shaft 430 is connected to the motor through the belt, and is rotated by receiving the driving force through the belt as the motor is driven, and the front and rear movement frame 421 and the second by the front and rear movement cylinder 420. The rotating shaft 430 is moved in the front-rear direction, and the support part 412 rotates 180 degrees or 90 degrees by the second rotating shaft 430.

The support block 440 is supported by the vertical column 460, the vertical column 460 is supported by the Shanghai East slider 480.

A slide block is installed at the center of the shandong slider 480, a second ball screw 460 is screwed in a vertical direction to the slide block, and a shandong copper motor 470 is mounted on a base table. The lower end of the motor 470 and the second ball screw 460 is connected by a belt.

At this time, the second ball screw 460 is rotated by receiving the driving force through the belt from the Shanghai East Motor 470.

Then, both ends of the shandong slider 480 is guided by guide rods installed in the vertical direction, the slide block is screwed to the second ball screw 460, as the second ball screw 460 rotates, Shanghai East Slider 480 is raised and lowered.

As a result, the pipe loader 400 clamps the pipe 11 by the second finger 410 and is advanced back and forth by the front and rear movement cylinder 420 to the rotary motor 450 and the second rotary shaft 430. It is rotated by the Shanghai copper motor 470, the belt, the second ball screw 460 and Shanghai copper slider 480.

The pipe loader 400 receives and clamps the pipe 11 transferred horizontally from the first clamp to weld the sleeve 12 to one end of the pipe 11, and then clamps the pipe 11 by 90 degrees. After rotating and rising, the pipe 11 is advanced in a vertical state and loaded into the welder 500 to weld one end of the pipe 11 and the sleeve 12 to each other.

In addition, the pipe loader 400 reversely unloads the pipe 11 to weld the sleeve 12 to the other end of the pipe 11, rotates the pipe 11 by 180 degrees, and then moves the pipe in a vertical state. 11) is advanced again and loaded into the welder 500.

The sleeve supply unit 100 is a feeder for automatically supplying the sleeve 12 in sequence, and is operated together when the pipe 11 is supplied, conveyed, and loaded to supply the sleeve 12 to the welder 500. do.

The carrier is a front and rear conveying line for receiving the sleeve 12 from the sleeve supply unit 100 and conveys in the front and rear direction, and a Shanghai conveying line for receiving the sleeve 12 from the front and rear conveying line and conveying it in the vertical direction; Receiving the sleeve 12 from the line and transfers to the left and right direction includes a left and right conveying line for loading on the loading rod 550 of the welder 500.

The pusher is installed at the front end of the forward and backward transfer line from the front and rear transfer line to the shanghai transfer line, the middle portion of the pusher is coupled by a hinge pin, and the upper end of the pusher is rotated by the cylinder. The lower end of the mounted pusher is rotated to push the sleeve 12 downward.

The Shanghai Song Shuttle is mounted at the bottom of the Shanghai Song Line and moves up and down along the Shanghai Song Line.

The shanghai transport shuttle is formed with a V-groove-shaped mounting portion, so that the sleeve 12 is dropped by the pusher, and the sleeve 12 dropped by the pusher is pushed inward by the cylinder.

The driving unit for transporting the Shanghai transport shuttle in the vertical direction is composed of a motor for providing a driving force, and a rotation bar connected to the motor to rotate in the vertical direction.

A guide groove is formed at one side of the Shanghai transport shuttle, and one end of the rotary bar is slidably coupled to the guide groove by a bearing.

Looking at the operation state of the Shanghai Song Shuttle, when the Shanghai Song Shuttle is located at the lower end of the Shanghai Song Line, the rotary bar is positioned vertically downward, and one end of the rotary bar is rotated 180 degrees upward by the motor. The Shanghai Song Shuttle rises while reciprocating along, while the Shanghai Song Shuttle descends while the rotating bar rotates 180 degrees downward.

The left and right transfer shuttle 310 is mounted on the left and right transfer lines, and the left and right transfer shuttle 310 moves in the left and right directions along the left and right transfer line to load the sleeve 12 on the loading rod 550 of the welder 500. .

The U-shaped seating groove is formed in the left and right transfer shuttle 310, and the lower portion of the left and right transfer shuttle 310 is widened and narrowed. When the transfer to the left and right transfer shuttle 310, the width of the left and right transfer shuttle 310 is opened and closed to transfer the sleeve 12 in the left and right directions.

The welding machine 500 receives the rod 12 from the left and right transfer shuttle 310 and loads the rod 12 on the lower electrode 521, and the lower electrode on which the sleeve 12 and the pipe 11 are loaded. 521 and an upper electrode 511 which is joined by melting the junction between the sleeve 12 and the pipe 11 using resistance heat while pressing the sleeve 12.

The upper electrode 511 and the lower electrode 521 are fixed by upper and lower electrode holders 510 and 520, and the upper electrode holder 510 is electrically connected to the welding transformer 540 through a bus bar 512 (busbar). The lower electrode holder 520 is also electrically connected to the welding transformer 540 by the bus bar 522.

The loading rod 550 is a cylindrical copper pipe structure, and serves to support the sleeve 12, when the sleeve 12 is fitted to the loading rod 550, the loading rod 550 is the upper and lower cylinders by the LM guide The left and right cylinders and the front and rear cylinders are transportable in each direction to load the sleeve 12 into the lower electrode 521 of the welder 500.

The lower electrode 521 and the lower electrode holder 520 are separated from each other by a pair, and the lower electrode holder 520 is mounted on the left and right moving cylinders 530 on the left side and the right side, respectively, to be movable left and right. The upper end of the pipe 11 is chucked and unchucked by the lower electrode holder 520.

A sleeve groove is concave in the horizontal direction on the upper surface of the lower electrode 521, and a pipe groove is concave in the vertical direction on the vertical surface of the lower electrode holder 520.

When the lower electrode holders 520 open to each other, the pipe 11 is loaded vertically between the lower electrode holders 520 by the pipe loader 400, and then the lower electrode holders 520 are narrowed to each other. Chucking (11).

In addition, after the sleeve 12 is loaded into the sleeve groove of the lower electrode 521 by the loading rod 550, the upper electrode 511 is lowered while the upper pressure cylinder descends to lower the sleeve 12 and the loading rod 550. Pressurize).

In this case, when the upper electrode 511 and the lower electrode 521 are supplied with power from the welding transformer 540 and current is supplied through the sleeve 12 and the pipe 11, the pressing force and the current of the upper pressurizing cylinder are increased. The pipe 11 and the sleeve 12 are melted and welded to each other while sparking is concentrated at the junction of the pipe 11 and the sleeve 12.

The link rod 10 in which the sleeve 12 is welded to the top of the pipe 11 by the above method is reversed by the pipe loader 400 and then rotated 180 degrees to be loaded on the welder 500 again. In the same way, the sleeve 12 is welded to the pipe 11 and then backed by the pipeloader 400.

The pipe 11 reversed by the pipe loader 400 is vertically arranged, and the pipe 11 is rotated 90 degrees by the pipe loader 400 and is horizontally arranged again.

The discharge clamper receives the pipe 11 arranged horizontally from the pipe loader 400 and transports the product into the product loading stand 600 and then drops it.

The second clamper 250 has the same configuration and function as the first clamper 200, and is arranged on the same line as the first clamper 200 to move from side to side.

An inclined portion is formed to be inclined at a predetermined angle on one surface of the product loading stand 600 to receive the link rod 10 dropped from the second clamper 250 to fall into the product loading stand 600.

Referring to the welding method of the link rod 10 according to an embodiment of the present invention by such a configuration as follows.

1. Pipe (11) and sleeve (12) to be welded supply (S100)

When the pipe 11 descends along the inclined surface from the storage container 110, the first lifter 120a receives the pipe 11 and then ascends, places it on the top of the first staircase 121, and continuously the second lifter ( When 120b) is raised to receive the pipe 11 mounted on the first stepped part 121 and placed on the upper end of the second stepped part 122, the pipe 11 rolls along the inclined surface of the guide part 130. It is seated in the first accommodating groove 130a.

Then, as the lifting and lowering unit 140 moves up, the pipe 11 in the first accommodation groove 130a of the guide portion 130 is moved to the second accommodation groove 130b, and the second accommodation groove 130b is provided. Transfer to the transfer lifter 150 from.

The pipe 11 has a first lifter 120a, a first staircase 121, a second staircase 122, a first accommodating groove 130a, a second accommodating groove 130b, and a storage container 110. The transfer lifter 150 is positioned and transported in order.

Next, the first clamper 200 clamps the pipe 11 transferred to the delivery lifter 150, is then transferred to the left side by the LM guide, and then transfers the pipe 11 to the pipe loader 400. (S120), the pipe loader 400 rotates the pipe 11 conveyed in a horizontal state by 90 degrees, and then continuously moves the pipe 11 to the lower electrode 521 of the welder 500 in a vertical state. (S130).

The sleeve 12 is forwarded one by one from the sleeve supplying part 300 along the front and rear transfer line, and when the sleeve 12 falls to the seat of the shanghai transport shuttle by a pusher installed at the front end of the front and rear transfer line, the sleeve 12 is moved into the seating portion by the cylinder. It is settled down.

Then, the Shanghai transport shuttle raises the sleeve 12 along the Shanghai transport line to the left and right transport shuttle 310 and descends to the original position to prepare to receive the next sleeve 12 from the pusher, and the left and right transport shuttle ( 310 receives the sleeve 12 seated on the seating portion of the Shanghai Songshuttle and transports the sleeve 12 along the left and right transfer line and is inserted into the loading rod 550 of the welding machine 500, and then transferred to the original position Prepare to receive the next sleeve 12 from the Shanghai East Shuttle (S120).

2. Welding of the pipe 11 and the sleeve 12

When the pipe 11 is loaded between the lower electrode holders 520 while the pipe 11 is supported by the pipe loader 400, the lower electrode holder 520 is pinched to chuck the upper end of the pipe 11, and the loading rod is loaded. As the sleeve 12 fitted to the 550 is seated in the sleeve groove of the lower electrode 521, the lower surface of the sleeve 12 is seated on the upper end of the pipe 11.

Then, while the welding pressure cylinder 560 is lowered, the upper electrode 511 presses the sleeve 12 seated on the lower electrode 521 (S130), and the upper electrode 511 and the lower electrode 521 are welded. Resistor heat is generated by applying current from the transformer 540 through the sleeve 12 and the pipe 11, and the joining portion of the sleeve 12 and the pipe 11 melts by the pressing force and the resistance heat. While the sleeve 12 is welded to the top of the pipe 11 (S140).

When the sleeve 12 is welded to one end of the pipe 11, the loading rod 550 is pulled back to the original position, the welding pressure cylinder 560 is raised to move the upper electrode 511 to the original position, the lower electrode As the holder 520 opens, the pipe 11 is reversed by the pipe loader 400.

Next, the pipe loader 400 rotates 180 degrees to rotate one end of the pipe 11 to which the sleeve 12 is welded downward (S150), and then lowers the pipe 11 back to a vertical state. Loading between holders 520.

When the pipe 11 is loaded between the lower electrode holders 520, the lower electrode holder 520 is retracted to chuck the upper end of the pipe 11, and the new sleeve 12 is moved by the left and right transfer shuttle 310. ) Is fitted to the loading rod 550, the sleeve 12 is seated on the lower electrode 521 by the loading rod 550, the welding pressure cylinder 560 is lowered and the upper electrode 511 is the sleeve 12. After pressing (S160), while the upper electrode 511 and the lower electrode 521 is secondarily energized, the sleeve 12 is welded to the upper end of the pipe 11 (S170).

3. Product Discharge (S180)

The link rod 10, in which the sleeve 12 is welded to both ends of the pipe 11, is rotated 90 degrees by the pipe loader 400, and the second clamper 250, which is waiting, is connected to the pipe loader 400. After clamping the rod 10 is transported to the left and stored by dropping the link rod 10 in the interior of the product loading stand (600).

10: link load 11: pipe
12: sleeve 100: pipe supply
101: first ball screw 102: front wheel
110: reservoir 120a: first lifter
120b: second lifter 121: first stairs
122: second staircase 123: first vertical cylinder
130: guide portion 130a: first receiving groove
130b: second receiving groove 140: moving up and down
141: second vertical moving cylinder 150: transmission lifter
151: third vertical moving cylinder 200: first clamper
210: first finger 211: rotation axis
212: fixed part 220: left and right moving motor
221: Pinion Gear 222: Rack Gear
223: base plate 224: left and right moving frame
225: guide bar 230: Shanghai East frame
231: Shanghai East cylinder 250: the second clamper
300: sleeve supply 310: left and right transfer shuttle
400: pipe loader 410: second finger
411: first rotating shaft 412: support
420: front and rear movement cylinder 421: front and rear movement frame
430: second axis of rotation 440: support block
450: rotating motor 460: vertical pillar
470: Shanghai East Motor 480: Shanghai East Slider
500: projection welding machine 510: upper electrode holder
511: upper electrode 512: bus
520: lower electrode holder 521: lower electrode
522: mothership 530: left and right cylinder
540: welding transformer 550: loading rod
560: welding pressure cylinder

Claims (5)

delete A projection welder 500 including a welding transformer 540, a loading rod 550, an upper electrode 511, and a lower electrode 521, for welding the pipe 11 and the sleeve 12 using resistance heat;
Pipe supply unit 100 for supplying a pipe (11);
A first clamper (200) clamped by receiving the pipe (11) from the pipe supply unit (100) and conveyed from side to side by an EL guide;
A pipe loader 400 which receives the pipe 11 from the first clamper 200 and rotates and loads the pipe 11 on the lower electrode 521 of the welding machine 500;
Sleeve supply unit 300 for supplying a sleeve (12);
A left and right transfer shuttle 310 which receives the sleeve 12 from the sleeve supply part 300 and fits the loading rod 550 of the welder 500;
Including;
The projection welding machine (500) is a resistance welding automation device for a link rod, characterized in that the upper electrode 511 is mounted on the lower end to provide a pressing pressure cylinder 560 for providing a pressing force to the upper electrode (511).
The pipe supply unit 100 of claim 2, the bottom surface is formed to be inclined downward, a plurality of pipes (11) stored therein is discharged while rolling down;
First and second lifters (120a and 120b) receiving the pipe (11) rolled down from the reservoir (110) and raising them to the upper ends of the first and second staircases (121,122);
First and second accommodating grooves 130a and 130b are formed at the upper end, and the guide guides the pipe 11 mounted on the second staircase 122 to the first and second accommodating grooves 130a and 130b. Unit 130;
Lifting and lowering unit 140 for lifting the pipe (11) moved to the first receiving groove (130a) to transfer to the second receiving groove (130b);
A delivery lifter 150 which receives the pipe 11 transferred to the second accommodation groove 130b and delivers the pipe 11 to the first clamper 200;
Resistance welding automation device for a link rod comprising a.
The method of claim 2, wherein the pipe loader 400 is connected to the second finger 410 clamping the pipe 11, the support portion 412 for supporting the second finger 410, and the support portion 412 And a second rotary shaft 430 for rotating the support 412 so that the sleeve 12 can be welded to both ends of the pipe 11, and connected to the second rotary shaft 430 to move the support 412 forward and backward. Resistance welding automation device for a link rod, characterized in that it comprises a front and rear movable cylinder (420) for loading and unloading the pipe (11) to the lower electrode (521) of the welder (500).
Supplying a pipe (11) and a sleeve (12);
The first clamper 200 clamping and transporting the pipe 11 from the pipe supply unit 100;
The pipe loader 400 clamps and rotates the pipe 11 from the first clamper 200 and then advances and loads the pipe 11 onto the lower electrode 521 of the welder 500;
Chucking the pipe 11 loaded with the lower electrode 521 of the welder 500;
The left and right transfer shuttle 310 receives the sleeve 12 from the sleeve supply unit 300 and inserts the sleeve 12 into the loading rod 550 of the welding machine 500, and thus the sleeve 12 is moved by the loading rod 550 of the welding machine 500. Loading the lower electrode 521 of the welder 500;
Pressing the sleeve 12 by the upper electrode 511 of the welder 500 as the welding pressure cylinder 560 descends;
Welding the sleeve 12 to the top of the pipe 11 by resistance heat and pressing force generated when the upper electrode 511 and the lower electrode 521 receive current from the welding transformer 540 and are first energized;
The pipe 11 welded to the sleeve 12 by the pipe loader 400 is unloaded, the pipe 11 is rotated 180 degrees and reloaded, and the sleeve 12 is welded to the pipe 11. A new sleeve 12 is also welded to the opposite end;
A method of automating resistance welding for link rods comprising the two sleeves (12) discharging the pipe (11) welded at both ends and storing the pipe (11).

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