KR101668323B1 - Stud welding gun using the actuator - Google Patents

Stud welding gun using the actuator Download PDF

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Publication number
KR101668323B1
KR101668323B1 KR1020160056938A KR20160056938A KR101668323B1 KR 101668323 B1 KR101668323 B1 KR 101668323B1 KR 1020160056938 A KR1020160056938 A KR 1020160056938A KR 20160056938 A KR20160056938 A KR 20160056938A KR 101668323 B1 KR101668323 B1 KR 101668323B1
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KR
South Korea
Prior art keywords
stud
actuator
air cylinder
chuck
rod
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KR1020160056938A
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Korean (ko)
Inventor
이재용
Original Assignee
주식회사 지에스티
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Priority to KR1020160056938A priority Critical patent/KR101668323B1/en
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Publication of KR101668323B1 publication Critical patent/KR101668323B1/en

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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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • 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
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud welding
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Arc Welding In General (AREA)

Abstract

The present invention relates to a stud welding gun automatically welding a stud with a base material and, more specifically, to a technology about a stud welding gun using an actuator capable of improving the durability and stably welding a stud with a base material by using a chuck receiving a supply of the stud; an air cylinder moving the stud inputted in the chuck to a lower side of the chuck; and the actuator lifting an air cylinder to generate arc between the stud and the base material. In addition, the stud welding gun using actuator is capable of obtaining an effect of stably generating arc and compressing the stud by stably moving the first air cylinder upward and downward with the actuator and an effect of improving the durability of the device by hardly causing the abrasion of components even in the repeated upward and downward movement of the air cylinder.

Description

[0001] The present invention relates to a Stud welding gun using the actuator,

More particularly, the present invention relates to a welding gun for automatically welding a stud to a base material, and more particularly, to a welding gun that generates an arc between an air cylinder for moving the stud received in the chuck and a lower portion of the chuck, The present invention relates to a stud welding gun using an actuator capable of increasing the service life by using an actuator for lifting the air cylinder and stably welding the stud to the base material.

In general, stud welding refers to welding in which an arc is generated by using a stud or the like as an electrode, and the stud is pressed on the base material in a molten state.

The studs are typically relatively short-length steel rods that have threads at one end and are welded or welded to the base material, such as a plate or part, where the thread is not formed, and other plates or parts can be joined using threads . It is also referred to as a stud bolt in that a thread is formed on one side.

Such studs are being developed in a variety of forms, particularly stud welders that automatically weld studs as they are consumed in large quantities in automotive assembly processes. The stud welding gun can continuously weld studs to a plurality of points previously set on the base material while moving horizontally relative to the base material, which is usually a flat plate. It is usually said that the stud welding gun is placed upright in the vertical direction by horizontally arranging the base material, the stud is held in the lower chuck of the stud welding gun and then raised or lowered. It is desirable to express the forward / backward operation of the welding gun forward or backward with respect to the base material by raising and lowering it by operating the three axes by mounting the robot arm on the robot arm.

The stud welding gun according to the related art includes a large-sized gun base, a cylindrical housing fixed by the gun base, and a pushing rod which is installed inside the housing so as to be movable back and forth, An adapter provided at a front of the gun body and having a chuck for gripping the stud according to advancement of the pushing rod; a lifting module installed at the rear of the gun body for advancing or retracting the gun body; A main spring interposed between the gun body and the lifting module, and a stud supply unit for supplying the stud into the adapter.

An arc current flows through a gun body made of a conductive metal, a pushing rod, an adapter, and a chuck through an electric wire connected to a rear end of the gun body, thereby melting the contact surface of the stud held by the chuck.

The stud welding process using the above-described stud welding process is as follows: 1) contact, 2) backward and induced arc generation, 3) main arc generation, and 4) pressing by advancing.

First, the stud is automatically supplied to the inside of the adapter through the stud supply unit before the 1) contact process is performed, and the pushing rod provided inside the gun body advances by the provision of pneumatic pressure. As the pushing rod advances, the stud is held on the chuck of the adapter, and the stud is brought into contact with the base material while the stud welding gun is close to the base material.

1) In a state where the stud is initially in contact with the base material, the pushing rod is advanced to the front of the gun body, and the tip of the pushing rod is in contact with the rear end of the stud. In this case, regardless of whether the contact surface of the base material to which the stud is contacted is flat or embossed, the forward and backward strokes of the pushing rod by the air pressure are the same as the fully moved strokes. However, if there is embossing on the contact surface of the base material, the advance stroke by the pneumatic pressure of the pushing rod is completely performed, and the main body itself is pushed backward by the height of the embossing so that the main spring is compressed.

2) The lifting module operates from the process of backward and induced arc generation. If there is a gap between the stud and the base material before the arc is generated, no arc is generated. However, if the main arc is directly generated in the state where the stud and the base material are in contact with each other, the stud is not melted properly and the stud is welded to the base material with defects. Therefore, in the contact state, the induction arc is generated first, and the gun body is operated by operating the lifting module to make the optimal arc generating distance where the melting of the stud is optimized by the main arc described later. At this time, the optimum arc generation distance is about 1.5 mm as a widely known distance based on many experiments and experiences, and the lifting module is to pull back the gun body by 1.5 mm. The induced arc current is about 20A so that an arc is maintained between the stud and the base material before generating a main arc, which will be described later.

3) The main arc generation process is performed by the lifting module after the induction arc is generated, and the gun body is backward by 1.5 mm, that is, by the optimum arc generating distance. At this time, the main arc current flows from 200A to 1800A. As the main arc is generated, the contact surface of the stud and a part of the contact surface of the facing base material are melted.

4) In the pressing process by forward movement, when the main arc flows for a predetermined time and the contact surface of the stud and the base material is melted, when the lifting module is operated to advance the gun body, the molten contact surface of the stud is welded to the contact surface of the base material, Is completed.

As described in Korean Patent Registration No. 0729082, the conventional stud welding welding method as described above is a method in which a stud is brought into contact with a surface of a base material to fix a back body of the gun body using a lifting module, The main body is moved backward by actuating the lifting module, and then the stud body is welded due to the action of advancing the gun body by using the main spring. Therefore, the main part fixing the gun body by repeated operation is worn or damaged Frequent maintenance occurs, which leads to a decrease in work efficiency and an increase in manufacturing cost.

The main spring also has a problem in that the elastic force is lowered due to the repeated operation so that the forward movement of the key body is not smoothly performed and welding is bad in the pressing operation.

Korean Patent No. 1245429 Korean Patent No. 0729082

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems of the prior art. In the conventional stud welding gun, not only the components of the lifting module for fixing the gun body due to repeated operation are worn and damaged, The problem of welding is solved. The solution to this problem is that there is no wear of the components even in the repeated operation using the actuator, and even if there is no main spring, the first air cylinder, which corresponds to the conventional gun body, And a stud welded gun using the same.

In order to realize the above-described object, the present invention provides a stapler comprising: a staple chuck for gripping a stud; a stud supply member connected to a side surface of the staple chuck member to supply a stud; A first air cylinder having a pushing rod which is moved upward and downward, an actuator coupled to an upper portion of the first air cylinder, and a stopper and an actuator provided on the outer side of the first air cylinder, And a second air cylinder. The stud welding gun uses an actuator.

Further, the actuator of the present invention is characterized in that it further comprises an elastic member provided outside the rod and a position sensor for sensing the position of the rod.

The first air cylinder of the present invention may further include an air connection portion coupled to an upper portion of the first air cylinder and protruding to one side of the first air cylinder and coupled to a lower portion of the rod of the actuator, Wherein the stud chuck member comprises a plurality of first incisions and a plurality of second incisions extending from the lower end to the upper end, And a chuck extending from an upper portion of the incision and having a second incision portion inclined in one direction.

The stud welding gun using the actuator according to the present invention can stably move the first air cylinder up and down by using the actuator to stably generate the arc and compress the process, The lifetime of the device can be increased because there is no wear of the component even in repeated rising and falling operations.

Further, by using an actuator, frequent maintenance and repair demands can be reduced, manufacturing cost can be reduced, arc generation and compression can be performed more stably, and the surface of a curved base material can be easily The effect of welding studs can be obtained.

1 is a perspective view of a stud welding gun according to a preferred embodiment of the present invention;
2 is a perspective view of another angle of a stud welding gun according to a preferred embodiment of the present invention;
3 is a front view of a stud welding gun according to a preferred embodiment of the present invention.
4 is a rear view of a stud welding gun according to a preferred embodiment of the present invention.
5 is a front view of a first air cylinder and an actuator according to a preferred embodiment of the present invention.
6 is an exploded perspective view of a first air cylinder and an actuator according to a preferred embodiment of the present invention.
7 is a front view of a stuck chuck member according to a preferred embodiment of the present invention.
8 is a bottom perspective view of a stud welding gun according to a preferred embodiment of the present invention.
9 is a front view of the stud feed member according to a preferred embodiment of the present invention.

Stud welding gun using actuator (hereinafter referred to as 'welding gun')

The stud 1 to be described below refers to a stud 1 having a bolt head 1b formed at a lower portion thereof and a threaded portion 1a formed at an upper portion of the stud 1, The stud 1 is supplied so that the bolt head 1b faces downward, and the lower surface of the bolt head 1b is welded to the upper portion of the base material.

A staple chuck member 100 for holding the stud 1; a stud feed member 200 connected to a side surface of the stud chuck member 100 to supply the stud 1; A first air cylinder 300 provided at an upper portion of the stuck chuck member 100 and having a pushing rod 310 moved upward and downward into the interior of the stuck chuck member 100, An actuator 400 coupled to the rod 410 at an upper portion thereof, a stopper 600 installed at an outer side of the first air cylinder 300 and formed in a downward direction, And a second air cylinder 700 for moving the actuator 400 up and down.

The actuator 400 of the present invention further includes a position sensor 420 for sensing the position of the rod 410 and an elastic member 500 disposed outside the rod 410, The first air cylinder 300 further includes an air connection part 320 coupled to an upper portion of the first air cylinder 300 and coupled to a lower portion of the rod 410 of the actuator 400. The stopper 600 The stuck chuck member 100 further includes an inclined portion 610 bent in the direction of the lower portion of the stuck chuck member 100 and having a lower surface 612 parallel to the ground surface, A plurality of first incisions 112 formed in a lower portion of the lower end and protruding from the lower ends of the studs 1 and extending upward from the upper portion of the first incisions 112, And a chuck 110 on which a second cutout 114 is formed.

The stuck chuck member 100, which is a main component for achieving the present invention,

The stud 1 is gripped by the stud 1 for welding to the base material so that the stud 1 is received from the stud supply member 200 to be described later and grips the stud 1 at the lower end so as to weld the base material .

Specifically, as shown in FIG. 7, the stud chuck member 100 of the present invention includes a plurality of first incisions 112 formed by protruding and holding studs 1 at a lower portion and extending from a lower end to an upper end, And a chuck 110 formed on the upper portion of the first cutout portion 112 and having a second cutout portion 114 having a slope in one direction and the upper portion of the chuck 110, And an adapter 120 formed at a lower portion of the first air cylinder 300, which will be described later, formed with an inlet hole 122 into which the stud 1 supplied from the stud supply member 200 is inserted .

At this time, the chuck 110 is provided with a coupling part 116 which can be engaged with the lower part of the adapter 120, and the adapter 120 is coupled with the lower part of the first air cylinder 300 An adapter flange 124 is provided.

The chuck 110 is configured such that the stud 1 drawn into the adapter 120 through the inlet hole 122 is connected to the push rod 310 of the first air cylinder 300, The stud 1 is temporarily fixed after the bolt head 1b is protruded as the chuck 110 is opened by the tapered portion (not shown) formed at the lower portion.

That is, the upper portion of the chuck 110 is provided with an inlet portion (not shown) in which a hollow having a larger diameter than the diameter of the bolt head 1b of the stud 1 is formed and a bolt hole 1b, a tapered portion with a hollow having a diameter larger than the diameter of the thread 1a and a hollow formed with a hollow having a diameter smaller than the diameter of the thread 1a, The hollow portion of the tapered portion and the grip portion is expanded by the bolt head 1b of the stud 1 moved downward, and when the bolt head 1b passes through the grip portion, it is contracted again The gripping portion grasps the thread 1a of the stud 1.

The first incision 112 of the chuck 110 is formed to have a smaller width than that of the second incision 114 because the elastic force of the first incision 112 is smaller than that of the second incision 114. [ The elastic force of the first incision part 114 is smaller than the elastic force of the second incision part 114. The elastic force of the second incision part 114 is smaller than that of the first incision part 112, The second cut portion 114 has an inclination in one direction so as to prevent the first cut portion 114 from being easily broken when it is expanded by the bolt head 1b To achieve the effect.

When the second cut portion 114 is vertically formed, the second cut portion 114 is not formed at the interface (not shown) with the upper portion of the chuck 110 where the second cut portion 114 is not formed, The second cut portion 114 may have a shape that is inclined in one direction so that the second cut portion 114 can be easily broken by the repeated expansion and contraction. It is possible to prevent the torsion moment from being generated at the interface between the upper surface of the chuck 110 and the upper surface of the chuck 110,

The stud feed member 200, which is a main component for achieving the present invention,

The stud 1 is connected to the side surface of the stud chuck member 100 and is vertically formed so that a plurality of studs 1 can be sequentially supplied to the inlet hole 122 of the adapter 120, And a lower portion is connected to a side surface of the stud chuck member 100, that is, a side surface of the adapter 120. In this case,

Specifically, the stud supply member 200 of the present invention includes a moving part 210 installed to communicate with a side surface of the adapter 120 on which the inlet hole 122 is formed, and a connecting part 210 installed to communicate with the upper part of the moving part 210 And an upper body 240 spaced apart from the upper part of the lower body 220 and connected to the upper part of the lower body 220 by a second squeezing member 230.

The stud supply member 200 of the present invention is configured such that the stud 1 of the external supply member (not shown) is moved to the upper portion of the upper body 240 in sequence so that the head bolt 1b faces downward And is supplied to the inlet hole 122 of the adapter 120 through the upper body 240, the second relaxation member 230, the lower body 220, and the moving part 210.

In addition, the stud supply member 200 of the present invention is configured such that when the arc is generated, the first air cylinder 300 is moved up and down by the actuator 400 described below and the moving part 210 and the lower body 220 together And the second relaxation member 230 is relaxed and retracted, thereby realizing the effect that the arc can be efficiently generated.

At this time, the upper body 240 is coupled and fixed to the side of any one of the third base frames 13, which will be described later, using the second flange 32.

As shown in FIG. 9, the moving unit 210 includes a cylindrical hollow (not shown) in which the stud 1 is moved, is formed to be inclined upward, and a lower end And a lower portion of the lower body 220 is coupled to the lower body 220 by a flange (not shown) so that the upper portion of the moving portion 210 may surround the outer side of the adapter 120, 220, upper body 240 and hollow portion (not shown) of a cylindrical shape in which the stud 1 is moved, similarly to the moving portion 210.

As shown in FIG. 9, the lower body 220 has a tapered portion (not shown) so that the diameter of the hollow decreases in a downward direction, thereby moving the upper body 240 and the second relief member 230 The stud 1 can be smoothly moved to the moving part 210, and the second slackening member 230 is formed with wrinkles on its outer side to relax and contract.

The upper body 240 has an insertion portion (not shown) having an outer diameter smaller than the hollow upper diameter of the lower body 220 to move up and down the moving body 210 and the lower body 220 Not only the effect of increasing the distance but also the effect that the stud 1 can be moved more smoothly is realized.

The first air cylinder 300, which is a main component for achieving the present invention,

And a pushing rod 310 which is installed on the upper surface of the stud chuck member 100 and moves up and down into the stud chuck member 100. The lower portion of the adapter flange 124 of the adapter 120 And the pushing rod 310 is operated using air pressure so that the pushing rod 310 is pulled into the adapter 120 and the chuck 110 to move the stud 1 in the downward direction of the chuck 110 Push and move.

The first air cylinder 300 of the present invention is coupled to the lower portion of the rod 410 of the actuator 400 to be described later and is moved up and down according to the operation of the actuator 400, When the stud (1) is welded to the base material, it is raised for arc generation, and then dropped again for pressurization after arc generation.

The first air cylinder 300 of the present invention further includes a first relief member 330 provided between a lower end of the first air cylinder 300 and an upper end of an adapter flange 124 of the adapter 120, The relaxation member 330 relaxes and contracts when raised and lowered by using the actuator 400 for generating an arc, thereby realizing the effect that the first air cylinder 300 is stably raised and lowered.

 The first air cylinder 300 of the present invention further includes an air connection portion 320 coupled to the lower portion of the rod 410 of the actuator 400, .

Specifically, the air connection part 320 is coupled to the upper side of the first air cylinder 300 and protrudes in one direction, that is, in the direction of an actuator 400 to be described later, The lower portion of the first air cylinder 410 is coupled with the rod 410 to move upward and downward together with the rod 410 according to the operation of the actuator 400 while the injection portion 322 is provided outside, Is supplied and recovered.

That is, the air connection part 320 does not directly couple the first air cylinder 300 to the lower part of the rod 410 of the actuator 400, so that the entire upper and lower lengths of the welding gun of the present invention can be made compact In addition, the weight of the whole is divided into left and right to realize more stable operation effect.

In connection with the above, in the first air cylinder 300 of the present invention, the housing 340 is coupled to the outside of the first air cylinder 300 so that the outside of the first air cylinder 300 can be protected from external impact desirable.

The actuator 400, which is a main component for achieving the present invention,

A rod 410 is coupled to an upper portion of the first air cylinder 300 so that a lower portion of the rod 410 is coupled to an upper portion of one side of the air connection portion 320 of the first air cylinder 300, (300) is moved upward and downward.

Specifically, the actuator 400 of the present invention operates when the bolt head 1b of the stud 1 held by the chuck 110 comes into contact with the base material, raises the first air cylinder 300, And when the arc is generated between the base material and the base material, the stud 1 is lowered and pressed so that the stud 1 is welded to the upper portion of the base material.

That is, the lifting module used in the conventional stud welding gun is worn out due to repetitive use, which shortens the service life of the part, and the durability of the spring for lowering the structure such as the first air cylinder 300 of the present invention is gradually increasing However, the actuator 400 of the present invention is characterized in that such a problem can be solved through the upward and downward movement of the rod.

At this time, the actuator 400 of the present invention may be any actuator of any conventional electric, hydraulic, or pneumatic type, and it is preferable that the actuator 400 be operated in consideration of wear and life of the device. It is preferable to use an actuator.

The actuator 400 of the present invention further includes an elastic member 500 disposed on the outer side of the rod 410. The elastic member 500 is installed on the outer side of the rod 410, The lowering operation of the actuator 400 can be performed more smoothly.

In addition, the elastic member 500 does not greatly affect the operation of raising and lowering the first air cylinder 300. However, when the first air cylinder 300 is installed on the outer side of the rod 410, When the bolt head 1b of the stud 1 is brought into contact with the base material, the first air cylinder 300 is instantaneously raised for arc generation Thereby realizing an effect of stably supporting the above.

The actuator 400 of the present invention further includes a position sensor 420 that senses the position of the rod 410. The position sensor 420 detects the position of the bolt head 410 of the stud 1, The information about the position of the rod 410 at the time when the first air cylinder 300 is brought into contact with the actuator 400 is referred to as a control point for controlling the actuator 400 to recognize the position of the rod 410 as the origin, And realizes the effect of making it constant.

More specifically, assuming that the stud 1 has a top surface with a horizontal plane and a position higher than the horizontal plane on the base material to be welded, the welding gun of the present invention is mounted on the bolt head 1b of the stud 1 for welding The first air cylinder 300 is lifted by raising the rod 410 by actuating the actuator 400 to generate an arc after contacting the base surface of the base material and the distance by which the first air cylinder 300 is raised And is determined by the operation of the predetermined actuator 400.

However, since the welding gun according to the present invention has the entire structure, that is, the distance that the bolt head 1b of the stud 1 is lowered to contact the base material, the bolt head 1b of the stud 1 is formed on the upper surface of the base material. The first air cylinder 300 moves to a position higher than when the bolt head 1b of the stud 1 is in contact with the horizontal plane so that the operation of the predetermined actuator 400 causes the lead 410 to move, The rising distance of the first air cylinder 300 for arc generation is shortened.

In other words, the position sensor 420 of the present invention can position the bolt head 1 of the stud 1, that is, the position of the rod 410 when the lower portion of the stud 1 contacts the welding surface of the base material, And transmits the position information of the rod 410 to a control unit for controlling the actuator 400 to actuate the actuator 400 so that the rod 410 can be elevated by a predetermined rising distance from the origin Thereby realizing the effect that the stud 1 can be constantly welded even if the surface of the base material is bent.

In this case, the optimum rising distance for generating the arc, that is, the lifting distance is 1.2 to 1.5 mm. After the arc is generated, the pressing force by which the stud 1 is pressed against the surface of the base material by the actuator 400 is transmitted to the first air cylinder 300 So that the lower portion of the stud 1 is moved to the surface of the base material by -0.3 to -1.0 mm.

The pressing force is such that the lower surface 612 of the stopper 600 to be described later is located about 1 mm higher than the lower end of the bolt head 1b of the stud 1 held by the chuck 110 The lower surface 612 of the stopper 600 may be positioned on the chuck 110 so as to minimize the overload of the actuator 400. In order to minimize the overload of the actuator 400, It is most preferable that the pressing force is generated together with the actuator 400 by positioning the bolt head 1b of the stud 1 held by the bolt head 1b about 0.75 mm higher than the lower end of the bolt head 1b.

In connection with the above, the combination of the rod of the actuator 400 of the present invention and the air connection 320 is firmly coupled by the coupling bolt 326 and the support plate 430 shown in FIG.

The stopper 600, which is a main component for achieving the present invention,

The first air cylinder 300 is formed on the outer side of the first air cylinder 300 and is formed in a lower direction and includes a lower portion of the lower portion of the housing 340 of the first air cylinder 300, When the bolt head 1b of the stud 1 is brought into contact with the surface of the base material, the bolt head 1b is brought into contact with the surface of the base material, The first air cylinder 300, that is, the stud 1 can be stably lifted and lowered.

At this time, it is preferable that the stopper 600 of the present invention is made of a material which does not flow current, so that it does not affect arc generation between the stud 1 and the base material, and moreover, And the downward movement, but only one is desired for accurate contact.

More specifically, the stopper 600 of the present invention has an upper portion fixed to the lower portion of the first flange 31, a lower portion formed in the direction of the stuck chuck member 100, that is, bent in the direction of the chuck 110, And an inclined portion 610 having a lower surface 612.

The inclined portion 610 is formed at a lower portion of the stopper 600 so as to have a tilt in the direction of the chuck 110 so that the stud 1 is brought into contact with the surface at which the stud 1 is brought into contact with the base material as close as possible, Thereby realizing an effect that the welding gun can stably maintain the lowered position.

In this case, when the surface of the base material is bent, the stopper 600 of the present invention may be provided with an elastic member (not shown) such as a spring at its upper portion so as to be raised with the first air cylinder 300, As shown in FIG.

The second air cylinder 700, which is a main component for achieving the present invention,

The actuator 400 is moved up and down so that the bolt head 1b of the stud 1 is brought into contact with the surface of the base material and the actuator 400 is moved to grasp the position of the rod 410, 300 and the stud chuck member 100 are moved up and down.

In addition, the welding gun of the present invention further comprises a support frame 20 fixedly installed on a lower portion of a fixed frame (not shown) installed on an upper part where the base material is moved, And a cylinder rod (not shown) of the second air cylinder 700 is fixedly installed at a lower portion. In a preferred embodiment of the present invention, the upper portion of the support frame 20 is installed in the fixed frame, And the cylinder rod of the second air cylinder 700 is fixed to the lower surface formed horizontally.

At this time, a third relief member 710 is provided between the second air cylinder 700 and the support frame 20, that is, outside the cylinder rod, and the actuator 400 is stably As shown in Fig.

In the welding gun of the present invention, the first base frame 11 is vertically fixed to one side of the supporting frame 20 perpendicular to the paper surface, and when the second air cylinder 700 is operated, The cylinder 700 is moved upward and downward stably along the first base frame 11.

4, the cylinder rod of the second air cylinder 700 is not coupled to the actuator 400, but the second air cylinder 700 is coupled to the actuator 400. In this case, A sixth base frame 16 is fixed to the upper portion of the cylinder 700 and a second base frame 12 is fixed to the other side of the sixth base frame 16 in parallel with the first base frame 11 And a fifth base frame 15 to which the actuator 400 is coupled is fixedly installed on the other side of the second base frame 12 so that the sixth base frame 16 And the actuator 400 moves upward and downward simultaneously with the upward and downward movement.

The welding gun of the present invention includes a fourth base frame 14 fixed to the lower portion of the second base frame 12 so that the up and down movement of the actuator 400 can be stably performed, A pair of guide shafts 17 connected to the lower surface of the frame 16 to the upper surface of the fourth base frame 14 and a through hole (not shown) through which the guide shafts 17 pass are formed, And a pair of guide blocks 18 fitted to the other side of the base frame 11 and moved upward and downward together with the first base frame 11.

In addition, the welding gun of the present invention has an upper portion fixed to the lower portion of the other side of the fifth base frame 15 so that the first air cylinder 300 can be stably lifted and lowered by the actuator 400, And a pair of third base frames 13, one side of which is fixed to the other side of the base frame 14.

In addition, the welding gun of the present invention is characterized in that a semi-cylindrical protective cover 19 is further provided on the other side of the third base frame 13 for protecting the first air cylinder 300 from external impact and for stable movement do.

At this time, the actuator 400 of the present invention is coupled to the other side of the second base frame 12 using the bracket 430 to stably support the lower part.

Although the second air cylinder 700 is stably moved by the guide shaft 17 and the guide block 18, the second air cylinder 700 is formed in the second base frame 12 to have a long hole And protrusions (not shown) protruding from the lower portion of the second air cylinder 700 are inserted into the elongated holes.

That is, by using the actuator 400 in place of the conventional lifting module, the stud welding gun using the actuator of the present invention can reduce the frequent maintenance demand, and can generate an arc more stably, The stud 1 can be easily welded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

1: Stud 1a: Thread 1b: Bolt head
11: first base frame 12: second base frame 13: third base frame
14: fourth base frame 15: fifth base frame 16: sixth base frame
17: guide shaft 18: guide block 19: protective cover
20: support frame 31: first flange 32: second flange
100: stuck chuck member 110: chuck 112: first incision part
114: second incision part 116: fastening part 120: adapter
122: inlet hole 124: adapter flange 200: stud feed member
210: moving part 220: lower body 230: second relaxation member
240: upper body 300: first air cylinder 310: pushing rod
320: Air connection part 322: Injection part 324: Support plate
326: coupling bolt 330: first relaxation member 340: housing
400: actuator 410: rod 420: position sensor
430: bracket 500: elastic member 600: stopper
610: inclined portion 612: lower surface 700: second air cylinder
710: third relaxation member

Claims (7)

A stud chuck member 100 for holding the stud 1;
A stud supply member 200 connected to the side surface of the stud chuck member 100 to supply the stud 1;
A first air cylinder 300 provided at an upper portion of the stuck chuck member 100 and having a pushing rod 310 moved up and down into the stuck chuck member 100;
An actuator 400 coupled to a lower portion of the rod 410 to move up and down the first air cylinder 300 on an upper portion of the first air cylinder 300; And
And a second air cylinder 700 for vertically moving the actuator 400,
Wherein the first air cylinder (300) further comprises a first relieving member (330) provided between the first air cylinder (300) and the stud chuck member (100).
The method according to claim 1,
The actuator (400)
And a position sensor (420) for sensing the position of the rod (410).
The method according to claim 1,
The actuator (400)
And an elastic member (500) installed on the outer side of the rod (410).
The method according to claim 1,
The first air cylinder (300)
And an air connection portion 320 coupled to the upper portion of the rod 400 and protruding to one side and coupled to the lower portion of the rod 410 of the actuator 400 and having an injection portion 322 on the outer side thereof A stud welding gun using an actuator.
The method according to claim 1,
The stud welding gun using the actuator
And a stopper (600) provided on an outer side of the first air cylinder (300) and formed in a downward direction.
6. The method of claim 5,
The stopper 600
Further comprising an inclined portion (610) bent at a lower portion in the direction of the stud chuck member (100) and having a lower surface (612) parallel to the surface of the stud (610).
The method according to claim 1,
The stud chuck member (100)
A plurality of first incisions 112 formed in a lower portion of the lower end and protruding from the lower ends of the studs 1 and extending upward from the upper portion of the first incisions 112, And a chuck (110) on which a second cutout (114) is formed.
KR1020160056938A 2016-05-10 2016-05-10 Stud welding gun using the actuator KR101668323B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101971957B1 (en) * 2018-03-06 2019-04-24 (주)디웰코 Arc Stud Welding Gun Using Servo Motor
CN110640281A (en) * 2019-10-17 2020-01-03 浙江创利焊接科技股份有限公司 Intelligent self-adaptive device for workpiece height of stud welding device
KR102084546B1 (en) * 2018-10-12 2020-04-23 정원기 Stud welding gun

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619978U (en) * 1992-08-24 1994-03-15 ポップリベット・ファスナー株式会社 Stud welding gun
JP2002172465A (en) * 2000-12-05 2002-06-18 Asia Giken:Kk Stud welding gun
KR100729082B1 (en) 2006-09-30 2007-06-14 이재용 Lifting module for stud welding gun
KR101245429B1 (en) 2011-08-22 2013-03-19 조현규 Stud welding gun
KR101304089B1 (en) * 2013-03-19 2013-09-05 이재용 Stude bolt chuck and stude bolt supplying device having the same
JP5568287B2 (en) * 2009-11-26 2014-08-06 日本ドライブイット株式会社 Welding gun for capacitor discharge type stud welding

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619978U (en) * 1992-08-24 1994-03-15 ポップリベット・ファスナー株式会社 Stud welding gun
JP2002172465A (en) * 2000-12-05 2002-06-18 Asia Giken:Kk Stud welding gun
KR100729082B1 (en) 2006-09-30 2007-06-14 이재용 Lifting module for stud welding gun
JP5568287B2 (en) * 2009-11-26 2014-08-06 日本ドライブイット株式会社 Welding gun for capacitor discharge type stud welding
KR101245429B1 (en) 2011-08-22 2013-03-19 조현규 Stud welding gun
KR101304089B1 (en) * 2013-03-19 2013-09-05 이재용 Stude bolt chuck and stude bolt supplying device having the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101971957B1 (en) * 2018-03-06 2019-04-24 (주)디웰코 Arc Stud Welding Gun Using Servo Motor
KR102084546B1 (en) * 2018-10-12 2020-04-23 정원기 Stud welding gun
CN110640281A (en) * 2019-10-17 2020-01-03 浙江创利焊接科技股份有限公司 Intelligent self-adaptive device for workpiece height of stud welding device

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