KR101928021B1 - Driving method of automatic welding machine for stud - Google Patents

Abstract

The present invention is characterized in that a jig device for a stud in which a stud is seated and fixed on an upper surface of a work table and a ferruling jig device in which a ferrule is seated and fixed are provided, And a stud feeder unit for feeding a stud to the jig for a stud is provided on one side of the workbench. The automatic welding apparatus for a stud includes: And more particularly, the stud supply unit includes a first stage in which the stud is discharged from the stud reservoir in which the stud is stored; A second step in which the stud discharged from the stud reservoir is transported along the stud transfer rail; A third step in which the stud transferred along the stud feed rail is stopped by the stud stopper; A fourth step of pushing the stud stopped by the stud stopper by the first push cylinder and pushing it to the stud seating; And a stud mounted on the stud seating unit is supplied to the stud jig unit by a second push cylinder. The present invention relates to a method of driving an automatic welding apparatus for a stud.
INDUSTRIAL APPLICABILITY The method of driving an automatic welding apparatus for a stud according to the present invention has remarkable effects such as facilitating the transfer and welding of the stud and the ferrule by improving the productivity and facilitating the exchange of the jig for fixing the stud and the ferrule.

Description

Technical Field [0001] The present invention relates to a driving method of an automatic welding machine for stud,

The present invention is characterized in that a jig device for a stud in which a stud is seated and fixed on an upper surface of a work table and a ferruling jig device in which a ferrule is seated and fixed are provided, The present invention relates to a method of driving an automatic welding apparatus for a stud that grips a ferrule by a robot welding machine and fixes studs on one surface of a base material block by welding.

Stud is a bolt with stud bolts at both ends. Bolt is formed only at one end of the stud bolt, and the other end of the bolt is not threaded. , And can be welded to a metal base material.

[0003] A conventional technique for welding such a stud bolt (hereinafter referred to as a stud) to a metal base material is disclosed in Japanese Patent Publication No. 1110849, in which a discharge hole is formed at one side and a bolt A body formed with a holder; A welding gun installed to be reciprocally movable with respect to the bolt holder and moving the stud bolt loaded in the bolt holder toward the discharge hole; At least one bolt supply box coupled to the body and having a plurality of stud bolts received therein; A bolt loading unit loading the stud bolts supplied from the bolt supply box one by one into the bolt holder; And a linear motion device for reciprocating the welding gun.

Another prior art is disclosed in Korean Patent Registration No. 1370439, which is a device for welding a stud bolt into a cylindrical structure, comprising: a horizontal holder for movably mounting a welding gun for welding the stud bolt in an axial direction; A linear moving device for performing an axial movement of the welding gun relative to the horizontal holder; A distance measuring sensor for detecting an axial movement amount of the welding gun with respect to the horizontal holder; A rotation driving equipment for rotatably supporting the cylindrical structure in a state where the cylindrical structure is fitted to the outside of the horizontal cradle; A rotation angle detection sensor for detecting a circumferential rotation angle with respect to the cylindrical structure; And a controller for detecting an axial movement amount of the welding gun via the distance measuring sensor and controlling an operation of the linear movement device to adjust an axial fixing position of the stud bolt with respect to the cylindrical structure, A control unit for detecting a rotation angle of the cylindrical structure and adjusting the operation of the rotation support equipment to adjust a circumferential fixed position of the stud bolt with respect to the cylindrical structure and outputting a welding command to the welding gun Wherein the horizontal holder is provided so that both ends thereof are supported via a vertical holder and the position of the welding gun with respect to the axial center of the cylindrical structure is aligned using a centering device between the vertical holder and the vertical holder. A stud bolt welding device for a cylindrical structure is registered and disclosed.

As another conventional technique, a chuck member for supplying a stud bolt as a base material to the registered patent publication No. 1553217; A guiding unit installed outside the chuck member to surround the chuck member and supplying a shield gas to the outside of the chuck member; And a stopper extending in the longitudinal direction of the chuck member in the guide portion and contacting the chucking member to prevent the chucking member from being damaged prior to the chucking member, the guide portion being formed in a pipe shape, An inner passage for guiding movement of the shield gas is provided between the chuck member and the chuck member, and the stopper includes: a first stopper body of a pipe shape connected to the guide portion; A detent protruding from one end of the first stopper body facing the base material in a direction toward the base material; And an outlet through which the shield gas is discharged, wherein the chuck nut is connected to the chuck member; A connecting body to which the chuck nut is fastened; And a cooling conduit portion for supplying cooling water to the connection body, wherein the cooling conduit portion includes: a first conduit for supplying cooling water to the inside of the connection body and the body portion; And a second conduit for supplying cooling water to the inside of the chuck nut, wherein the first conduit is communicated with the second conduit to move the cooling water.

However, since the conventional stud welding apparatus is unnaturally moved in the X, Y, and Z directions, the accuracy and efficiency of welding are inferior and the visual appearance of the product due to the welded joint is not good .

The present applicant has disclosed in Japanese Patent No. 1452132 and No. 1667495 for a stud automatic welding apparatus which solves the disadvantages of the prior art described above. However, the patent already filed in the present application also discloses that the stud and the ferrule are fixed There is a disadvantage that replacement of the jig device is not easy.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a stud for easily exchanging a jig for fixing a stud and a ferrule, And to provide an automatic welding apparatus.

The present invention is characterized in that a jig device for a stud in which a stud is seated and fixed on an upper surface of a work table and a ferruling jig device in which a ferrule is seated and fixed are provided, And a stud feeder unit for feeding a stud to the jig for a stud is provided on one side of the workbench. The automatic welding apparatus for a stud includes: As a result,

Wherein the stud feeder unit includes: a first stage in which the stud is discharged from the stud reservoir in which the stud is stored; A second step in which the stud discharged from the stud reservoir is transported along the stud transfer rail; A third step in which the stud transferred along the stud feed rail is stopped by the stud stopper; A fourth step of pushing the stud stopped by the stud stopper by the first push cylinder and pushing it to the stud seating; And the stud mounted on the stud seat is fed to the stud jig device unit by the second push cylinder.

INDUSTRIAL APPLICABILITY The method of driving an automatic welding apparatus for a stud according to the present invention has remarkable effects such as facilitating the transfer and welding of the stud and the ferrule by improving the productivity and facilitating the exchange of the jig for fixing the stud and the ferrule.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan schematic view showing an operation state of an automatic welding apparatus for a stud according to the present invention. FIG.
2 is a side schematic view showing an operation state of an automatic welding apparatus for a stud according to the present invention;
3 is a front schematic view showing an operation state of an automatic welding apparatus for a stud according to the present invention.
4 is a photograph of an automatic welding apparatus for a stud according to the present invention.
5 is a schematic view showing a coupling relationship between a stud and a ferrule used in an automatic welding apparatus for a stud according to the present invention.
6 is a photograph of a stud feeder of an automatic welding apparatus for a stud according to the present invention.
7 is a partial enlarged view of the stud feeder portion of the present invention.
8 is a photograph of a jig device for a stud according to the present invention.
FIG. 9 is a photograph of a ferrule supply portion of an automatic welding apparatus for a stud according to the present invention. FIG.
10 is a photograph of the ferro-storage of the ferro-feed part of the present invention.
11 is a photograph of a ferro-storage and a ferro-transport rail of a ferro-feed part of the present invention.

There is provided a stud jig device part 130 on which a stud 10 is seated and fixed on an upper surface of a work table 110 and a ferrule jig device part 150 on which a ferrule 20 is seated and fixed, The stud 10 and the ferrule 20 that are seated on the ferrule 130 and the ferrule jig device 150 are gripped by the robot welder 160 to weld the stud 10 to one surface of the base material block 30 Wherein a stud feeder unit (120) for feeding a stud (10) to a stud jig device unit (130) is provided at one side of the work table (110)

The stud supply unit 120 includes a first stage in which the stud 10 is discharged from the stud reservoir 121 in which the stud 10 is stored; A second step in which the stud 10 discharged from the stud reservoir 121 is conveyed along the stud conveying rail 123; The stud 10 being conveyed along the stud conveying rail 123 is stopped by the stud stopper 124; A fourth step of pushing the stud 10 stopped by the stud stopper 124 by the first push cylinder 125 and pushing the stud 10 to the stud seat 126; And the stud 10 mounted on the stud mount 126 is supplied to the stud jig device 130 by the second push cylinder 127 in the fifth step.

A sensing sensor 128 for sensing the longitudinal direction of the linearly transferred stud 10 is mounted on the stud stopper 124. When the stud 10 is positioned in the reverse direction to the set direction, And the stud 10 is discharged to the lower portion without operating.

A ferrule feeder unit 140 for feeding the ferrule 10 to the ferrule jig device unit 150 is installed at the other side of the work table 110 on which the stud feeder unit 120 is installed. The unit 140 includes a ferro-storage 141 in which the ferro-storage 20 is stored, a ferro-transporting rail 142 for linearly transporting the ferro- A ferro stopper 143 provided at an end of the ferrule conveying rail 142 for stopping the feeding of the ferrole 20 and a ferro stopper 143 for stopping the feeding of the ferrole 20 by the ferro stopper 143, And a third push cylinder 144 which is seated on the perl jig device unit 150 by pushing in the direction of the arrow.

The ferrole feeder unit 140 includes a first stage in which the ferrole is discharged from the ferrolear store 141 in which the ferrole is stored; The ferrous material 20 discharged from the ferro-storage 141 is transported along the ferro-transporting rail 142; A third step of stopping the feeding of the ferrole 20 conveyed along the ferrole feed rail 142 by the ferrole stopper 143; And then the ferrous material 20 is stopped by the ferro stopper 143 and is then pushed by the third push cylinder 144 to be transferred to the jig device 150 for the ferrous material.

A method of driving an automatic welding apparatus for a stud according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan schematic view showing the working state of an automatic welding apparatus for a stud according to the present invention, FIG. 2 is a side outline view showing an operation state of an automatic welding apparatus for a stud according to the present invention, and FIG. Fig. 4 is a photograph of an automatic welding apparatus for a stud according to the present invention, and Fig. 5 is a schematic diagram showing a coupling relationship between a stud and a ferrule, which are used in an automatic welding apparatus for a stud according to the present invention.

1 to 4, the automatic welding apparatus 100 for a stud according to the present invention includes a stud jig device 130 in which a stud 10 is seated on an upper surface of a work table 110 and a ferrule 20 And the ferrule 20 and the stud 10 seated on the jig device unit 150 for the stud and the jig for the ferrules 150 are mounted on a robot welder 160 to fix the stud 10 to the one surface of the base block 30 by welding.

A stud feeder 120 for feeding the stud 10 to the stud jig 130 is provided at one side of the work table 110 and the stud feeder 120 On the other side of the installed workbench 110, there is provided a ferrole feeder unit 140 for feeding the ferrole 10 to the ferro jigger unit 150.

5, the stud 10 used in the automatic welding apparatus 100 for a stud according to the present invention includes a cylindrical support portion 11 and a support portion 12 in which a thread is formed on the outer periphery of the support portion 12 A screw member 11 is formed integrally with the base block 30 and a fusible material 13 is formed on an end face of the support portion 12 so as to be in contact with the base block 30 to facilitate welding when welding the base block 30 .

In addition, the ferrule 20 is coupled to the stud 10 by the robot welder 160 to restrict the formation of weld beads generated during the welding operation, and to prevent weld spots.

The ferrule 20 is in the form of a hollow body and comprises a lower body 22 having a large inner diameter and an upper body 21 having an inner diameter relatively smaller than an inner diameter of the lower body 22.

The inner diameter of the upper body 21 of the ferrule 20 is formed to correspond to the diameter of the support portion 12 of the stud 10 so that the stud 10 is inserted through the hollow hole of the upper body 21, A space is formed between the outer surface of the support portion 12 and the inner surface of the lower body 22. In this case,

The support member 12 formed on the end face of the support member 11 is inserted into the support member 11 through the upper body 21 of the ferrule 20 so as to be brought into contact with one surface of the base member block 30 A welding bead is formed in a space formed between the outer surface of the support portion 12 and the inner surface of the lower body 22 while being welded.

The ferrule 20 is preferably made of a ceramic material so that it can withstand high temperatures due to the characteristics of welding to be performed at a high temperature.

FIG. 6 is a photograph of a stud feeder of an automatic welding apparatus for a stud according to the present invention, and FIG. 7 is an enlarged view of a portion of the stud feeder of the present invention.

6 and 7, the stud feeder unit 120 of the present invention includes a stud reservoir 121 in which the stud 10 is stored, and a stud 10 which is discharged from the stud reservoir 121 to the outside And a stud feed rail 123 for feeding along the longitudinal direction of the stud 10 is provided.

A stud stopper 124 for stopping the conveyance of the stud 10 is formed at an end of the stud conveying rail 123. A stud stopper 124 is provided at one end of the end of the stud conveying rail 123, There is provided a first push cylinder 125 for transferring the stud 10 from which the feeding is stopped, in the lateral direction perpendicular to the stud feed rail 123.

Thus, the stud 10, which is rolled and conveyed by the first push cylinder 125, is seated on the stud seating base 126.

The stud seating 126 has a V-groove or a semicircular groove in its vertical cross section, so that the stud 10 to be rolled can be stably installed without being detached from the outside.

Between the stud conveying rail 123 and the stud seating 126 is mounted a rolling table 129 having a slope downward toward the stud seating 126 so as to facilitate the transfer of the stud 10 .

A second push cylinder 127 is mounted so as to linearly move the stud 10 in the longitudinal direction of the stud 10 after the stud 10 is seated on the stud seating 126. [

The stud 10 mounted on the stud seat 126 by the second push cylinder 127 is supplied to the stud jig device 130.

The applicants' prior arts 1452132 and 1667495 disclose similar techniques for the structure and operation of the stud jig device 130, so that detailed description has been omitted.

Similar techniques for transferring the robot welder 160 in the X axis, the Y axis, and the Z axis, and the means for welding the stud 10 and the base material block 30 are also disclosed in Japanese Patent No. 1452132 1667495, the detailed description has been omitted in the present invention.

A sensing sensor 128 for detecting the forward and backward directions of the linearly-transferred stud 10 is mounted on the stud stopper 124. When the stud 10 is positioned in a reverse direction to the set direction, The stud 10 is discharged to the lower portion without operating the cylinder 125.

The sensing sensor 128 sensing the longitudinal relationship of the stud 10 allows the laser sensor to be used.

A means for discharging the stud 10 downwardly is provided with a rotary plate (not shown) so as to vertically pivot on the end of the stud feed rail 123, The rotating plate is rotated downward, so that the stud 10 is discharged downward.

In summary, the stud feeder unit 120 includes a first stage in which the stud 10 is discharged from the stud reservoir 121 in which the stud 10 is stored; A second step in which the stud 10 discharged from the stud reservoir 121 is conveyed along the stud conveying rail 123; The stud 10 being conveyed along the stud conveying rail 123 is stopped by the stud stopper 124; A fourth step of pushing the stud 10 stopped by the stud stopper 124 by the first push cylinder 125 and pushing the stud 10 to the stud seat 126; And the stud 10 mounted on the stud mount 126 is supplied to the stud jig device 130 by the second push cylinder 127 in the fifth step.

8 is a photograph of a jig for a stud according to the present invention.

8, the stud jig device 130 includes a seating block 131 having a groove formed on an upper surface thereof so that the stud 10 is seated thereon, and a rotating unit (not shown) 132). ≪ / RTI >

More specifically, the pivoting means 132 includes a fixed block 110 fixed to the upper surface of the work table 110, and a fixed block 110-4 penetrating the fixed block 132-4 in the horizontal direction, A rotating shaft 132-1 fixed to the supporting block 132-6 supporting the block 131 and a linear motion 132-1 for rotating the rotating shaft 132-1 at one end of the rotating shaft 132-1. And a fourth push cylinder 132-3 for linearly moving the crank shaft 132-1.

That is, the support block 132-6 supporting the seating block 131 is coupled to one end of the rotation shaft 132-1 with respect to the support block 132-6, and the rotation shaft 132-1 is coupled to the other end. And a crankshaft 132-1 for rotating the crankshaft 132-1.

The crankshaft 132-1 is a shaft for changing a linear motion into a rotational motion, and serves to rotate the rotation shaft 132-1 in the present invention.

At this time, the rotation of the rotation shaft 132-1, through which the bearing 132-5 is mounted and passes through the fixed block 132-4, is transmitted to the rotation shaft 132-1 passing through the fixed block 132-4 Respectively.

When the fourth push cylinder 132-3 is operated, the crank shaft 132-1 hinged to the rod of the fourth push cylinder 132-3 linearly moves, and the crank shaft 132- 1 is rotated by the rotation of the rotating shaft 132-1.

Therefore, when the stud 10 is seated on the stud seat 126, the seating block 131 of the stud jig device 130 is positioned on the horizontal line with the stud 10, and the second push cylinder 127 When the stud 10 is inserted into the hole formed in the upper surface of the seating block 131 by the stud 10, the seating block 131 is positioned such that the stud 10 stands upright in the vertical direction, The clamping of the stud 10 is facilitated by the clamping means of FIG.

Fig. 9 is a photograph of a ferrule supply portion of the automatic welding apparatus for a stud according to the present invention, Fig. 10 is a photograph of a ferrol storage portion of a ferrule supply portion of the present invention, and Fig. 11 is a photograph of a ferrol storage portion and a ferrule transferring rail of the present invention.

9 to 11, the ferrule unit 140 of the present invention includes a ferrule reservoir 141 in which the ferrule 20 is stored, a ferrule 20 that is discharged from the ferror storage unit 141, A ferro stopper 143 for stopping the feeding of the ferrole 20 provided at an end of the ferrole feed rail 142 and a ferro stopper 143 for stopping the feeding by the ferro stopper 143 And a third push cylinder 144 for pushing the ferrole 20 in the lateral direction orthogonal to the perle feed rail 142 to seat the ferrole 20 on the ferro-jig device unit 150.

The ferroloc reservoir 141 has a cylindrical shape in which an inner space is formed and the ferrole 20 stored in the ferrole reservoir 141 rotates along the inner periphery of the ferrole reservoir 141 and is transported upward, Since the vertical direction of the ferrule 20 is properly positioned, the detailed description of the closed-loop storage 141 will be omitted.

On the other hand, a detection sensor (not shown) is installed on the upper part of the ferro stopper 143 to detect whether the vertically oriented ferrule 20 is correctly seated. A warning sound is generated by the detection sensor and a warning light The warning means and the warning lamp are actuated by the alarm means when the detection sensor senses that the ferror 20 has been moved in the opposite direction to the set direction by the notifying means (not shown) The erroneously mounted ferrule 20 can be removed or seated correctly, thereby reducing the defective rate occurring in the welding operation of the robot welder 160, which is a subsequent process.

In the first embodiment, a third 3-1 push cylinder (not shown) located at one side of the guide lane 151 to which the ferrules 20 are guided for conveyance, that is, at the side of the third push cylinder 144 And the other side of the third-first push cylinder is guided to the seating groove 152 to guide the feeding of the ferrule 20 to the other side of the conveying lane 151 on which the ferrule 20 is seated, An auxiliary guide lane which is another guide lane is formed.

When it is detected by the detection sensor that the vertical direction of the ferrule 20 is set in the reverse direction in the set direction, in this case, the third push cylinder 144 is not operated and the third-first push cylinder is operated So that the ferrule 20 can be fed and discharged to the auxiliary guide lane.

In addition, a seating plate (not shown) provided with a pivoting means for pivoting up and down by a hinge coupling is provided at the end of the conveyance lane 151 in the second embodiment, The seat plate is rotated downward by the turning means so that the ferrule 20 can be discharged to the outside.

The detection sensor uses a laser sensor in the same manner as the detection sensor 128 of the stud supply unit 120 described above.

In summary, the ferrole feeder unit 140 of the present invention includes a first stage in which the ferrole feeder 140 discharges the ferrolear from the ferrolear store 141 where the ferrole is stored; The ferrous material 20 discharged from the ferro-storage 141 is transported along the ferro-transporting rail 142; A third step of stopping the feeding of the ferrole 20 conveyed along the ferrole feed rail 142 by the ferrole stopper 143; And pushing the ferrule 20 stopped by the ferro stopper 143 to the third push cylinder 144 and transferring the ferrule 20 to the ferrule jig device unit 150.

The ferroloc reservoir 141 has a cylindrical shape in which an inner space is formed and the ferrole 20 stored in the ferrole reservoir 141 rotates along the inner periphery of the ferrole reservoir 141 and is transported upward, Since the vertical direction of the ferrule 20 is properly positioned, the detailed description of the closed-loop storage 141 will be omitted.

The stud 10 and the ferrule 20 supplied to the stud seating 126 and the seating groove 152 of the ferrule 20 by the stud feeder unit 120 and the ferrule feeder unit 140, Are clamped by the clamping means of the robot welder 160 and welded to the base block 30, respectively.

INDUSTRIAL APPLICABILITY The method of driving an automatic welding apparatus for a stud according to the present invention has remarkable effects such as facilitating the transfer and welding of the stud and the ferrule by improving the productivity and facilitating the exchange of the jig for fixing the stud and the ferrule.

10. Studs 11. Screws 12. Supports
13. Materials
20. Ferru 21. Top Body 22. Lower Body
23. Step
30. Base material block
100. Automatic welding device
110. Workbench
120. Stud feeder part 121. Storage 122. Sliding plate
122-1. Blocking plate 123. Stud feed rail 124. Stud stopper
125. First push cylinder 126. Stud seat 127. Second push cylinder
128. Detecting sensor 129. Roll Trolley
130. Jig unit for stud 131. Seat block 132. Rotating means
132-1. The rotation axis 132-2. Crank shaft 132-3. Fourth push cylinder
132-4. Fixed block 132-5. Bearings 132-6. Support block
140. Ferrol supply unit 141. Ferrol reservoir 142. Ferrol transferring rail
143. Ferro stopper 144. Third push cylinder
150. Jig Unit for Perl 151. Guide Lane 152. Seat Groove
160. Robot Welding Machine

Claims (3)

There is provided a stud jig device part 130 on which a stud 10 is seated and fixed on an upper surface of a work table 110 and a ferrule jig device part 150 on which a ferrule 20 is seated and fixed, The stud 10 and the ferrule 20 that are seated on the ferrule 130 and the ferrule jig device 150 are gripped by the robot welder 160 to weld the stud 10 to one surface of the base material block 30 Wherein a stud feeder unit (120) for feeding a stud (10) to a stud jig device unit (130) is provided at one side of the work table (110)
The stud supply unit 120 includes a first stage in which the stud 10 is discharged from the stud reservoir 121 in which the stud 10 is stored;
A second step in which the stud 10 discharged from the stud reservoir 121 is conveyed along the stud conveying rail 123;
The stud 10 being conveyed along the stud conveying rail 123 is stopped by the stud stopper 124;
A fourth step of pushing the stud 10 stopped by the stud stopper 124 by the first push cylinder 125 and pushing the stud 10 to the stud seat 126;
A fifth step of supplying the stud 10 seated on the stud mount 126 to the stud jig device 130 by the second push cylinder 127;
Wherein the driving of the automatic welding device for a stud is performed by a driving method.
The method according to claim 1,
A sensing sensor 128 for sensing the longitudinal direction of the linearly transferred stud 10 is mounted on the stud stopper 124. When the stud 10 is positioned in a reverse direction to the set direction, And the stud (10) is discharged to the lower portion without actuating the stud (125).
The method according to claim 1,
And a ferrule feeder unit 140 for feeding the ferrule 10 to the ferrule jig device unit 150 is provided on the other side of the work table 110 on which the stud feeder unit 120 is installed. A method of driving a device.

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