KR101374066B1 - Linkage apparatus for torch - Google Patents

Abstract

The present invention relates to a torch rod angle adjusting device comprising: a holder for gripping a torch rod; a link part connected to the holder to rotate-guide the torch rod forwards and backwards based on the lower side of the torch rod with the holder; and a link operating part to operate the link part forwards and backwards. The link part is connected to the rear of the holder. The present invention can increase a rotating radius of a torch rod by connecting a link to rotate a torch rod to the rear of the torch rod in contrast with conventional technology, and prevents a torch rod from interfering with equipment in cutting or welding of a steel pipe by changing an arrangement and form of a link.

Description

Torch Rod Angle Adjuster {LINKAGE APPARATUS FOR TORCH}

The present invention relates to an angle adjusting device of the torch rod, and more particularly, by connecting a link to rotate the torch rod to the rear side of the torch rod, the rotation radius of the torch rod can be increased, and the shape and arrangement of the link can be changed to the torch rod. The present invention relates to an angle adjusting device for a torch rod that can prevent interference with a facility when cutting or welding a steel pipe.

When cutting figures including straight lines and curves from cutting materials such as steel sheets or stainless steel sheets using the torch rods of the plasma cutting torch, the movement path of the torch rods is controlled so as to be the outline of the target figure. The cutting of the rod by driving the rod is performed.

The cutting device for performing the die cutting is a traveling bogie that runs in the y-axis direction along the laid rail, and transversely runs in a direction perpendicular to the laying direction of the rail (x-axis direction) mounted on the traveling bogie, and at the same time It has a transverse trolley with rods and is configured to control the speed and direction of movement of the torch rod by controlling the speed and direction of each trolley.

In particular, in a large cutting device, it is generally configured as an NC cutting device which controls the moving control of the cutting program including the movement control of each bogie corresponding to the shape of the figure to be cut and the progress of the cutting process by the NC device.

When a product cut from the material to be cut is welded with another product, an improvement may be made in the outer circumference of the product.

In the case of improvement cutting, it is necessary to incline the torch rod corresponding to the desired improvement angle and to control the inclination direction of the torch rod to always be directed to the normal direction with respect to the direction of cutting.

Therefore, in mold cutting, it is necessary to turn the torch rod inclined according to the change of cutting progress direction.

For this reason, the mold cutting device includes a torch block configured to set the torch rod at a predetermined angle, a torch turning device for turning the torch block, a torch rotating device for rotating the torch according to the turning of the torch block, and the like. It has a cutting device, and as cutting progresses, by controlling the torch turning device corresponding to the traveling direction of the torch rod, it is configured to form an improvement with a predetermined angle on the side of the product.

In an improved cutting device, when the torch rod is perpendicular to the surface of the material to be cut, the axis of the torch rod is in the extension of the torch turning device pivot axis.

In addition, when the torch rod is inclined, the rotation center is set on the extension line of the torch rod axis. When the torch rod is inclined, the intersection point between the extension line of the torch rod axis and the pivot axis extension line is in the surface or thickness direction of the cutting material. It is adjusted to be at a predetermined position.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

The welding device is proposed in Korean Patent Registration No. 10-0739109 (name of invention: TIG automatic welding device of steel pipe).

Existing steel pipe welding device has a problem that the link portion hits the cutting object when the torch rod is rotated more than a certain angle by connecting the link to the circumferential surface corresponding to the direction of rotation of the bundle to fix the torch rod.

Therefore, there is a need to improve this.

The present invention has been made in order to improve the above problems, by connecting the link to the torch rod to the rear side of the torch rod to be welded or the to-be-cut by the corresponding part of the link connected to the torch rod during the left and right rotation of the torch rod Another object is to provide an angle adjusting device of the torch rod to increase the turning radius that does not interfere with other equipment.

In addition, an object of the present invention is to provide an angle adjusting device of a torch rod for changing the shape and arrangement of the link to prevent interference with the to-be-welded object or the cut object as a torch rod.

Torch rod angle adjusting device according to the present invention includes: a holder for holding a torch rod, a link portion connected to the holder for guiding forward and backward rotation of the torch rod relative to the lower side of the torch rod with the holder, and the link portion back and forth And a link actuating unit for operating the link, wherein the link unit is connected to the rear side of the holder.

The link unit may include a first main link member linked to an upper portion of a rear side of the holder, a second main link member linked to a lower rear side of the holder, an end portion of the first main link member, and a second main link member. A first sub link member linked to an edge and connected to a first pivot shaft fixed in position, and a second sub link member connected to a second pivot shaft fixed in position and linked to an end of the second main link member. It includes.

The first sub link member may include: a first upper linear link connecting the first main link member and the second main link member; a first curved link extending in a direction of the holder from a lower portion of the first upper linear link; And a first lower linear link extending parallel to the first upper linear link at an end of the first curved link and connected to the first pivot axis.

The second sub link member is linked to an end of the second main link member and is arranged in parallel with the first upper linear link, and the first bend below the second upper linear link. And a second curved link extending parallel to the link and connected to the second pivot axis.

The link operating portion includes a first external gear group fixed to the second pivot shaft fixed to the second sub link member, and a second external gear group composed of a plurality of second external gears externally and fixed to the first external gear. A worm gear coupled to the second outermost gear of the second external gear group and having a first spur gear, and a second spur gear that is external to the first spur gear, thereby rotating the first external gear bidirectionally. It includes a front and rear movable motor for rotating the first main link member and the second main link member back and forth with respect to the first pivot axis and the second pivot axis as it rotates.

The link unit is preferably reciprocated left and right with the torch rod by the left and right operating unit.

The left and right operating portions, the bracket for supporting the link portion while fixing the first pivot shaft and the second pivot shaft, a rotary bushing fixed to the bracket, the power to generate a force for rotating the rotary bushing wound on the rotary bushing And a transmission member, a gear member connected to the power transmission member, and a left and right movable motor for rotating the link member left and right by rotating the gear member.

The rotating bush is inserted into the front and rear movable motor included in the link operation unit, the front and rear movable motor is preferably fixed to the bracket.

As described above, the angle adjusting device of the torch rod according to the present invention, unlike the prior art by connecting the link to rotate the torch rod to the rear side of the torch rod by the corresponding portion of the link connected to the torch rod during the left and right rotation of the torch rod It is possible to increase the radius of rotation that does not interfere with welds, cuttings or other equipment.

In addition, the present invention can prevent the interference with the to-be-welded object or the to-be-cut object to the maximum by changing the shape and arrangement of the link.

1 is a perspective view of the initial state of the angle adjusting device of the torch rod according to an embodiment of the present invention.
Figure 2 is a rear perspective view of the initial state of the angle adjusting device of the torch rod according to an embodiment of the present invention.
3 is an exploded perspective view of a link unit according to an embodiment of the present invention.
4 is an exploded perspective view of an operation unit for operating a link unit according to an embodiment of the present invention.
5 is a perspective view of main parts of an operation unit for operating the link unit back and forth according to an embodiment of the present invention.
Figure 6 is a perspective view showing a state in which the link portion is rotated rear side according to an embodiment of the present invention.
Figure 7 is a perspective view of the main portion of the operating unit for operating the left and right link portion according to an embodiment of the present invention.
8 is a perspective view showing a state in which the link unit is rotated to the left according to an embodiment of the present invention.
9 and 10 are schematic diagrams showing a link connection structure according to an embodiment of the present invention.
Figure 11 is a perspective view of the initial state of the angle adjusting device of the torch rod according to another embodiment of the present invention.
12 and 13 are schematic views showing a link connection structure according to another embodiment of the present invention.
Figure 14 is a perspective view of the initial state of the angle adjusting device of the torch rod according to another embodiment of the present invention.
15 is an exploded perspective view of the link unit of FIG. 14.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the angle adjusting device of the torch rod according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a perspective view of the initial state of the angle adjusting device of the torch rod according to an embodiment of the present invention, Figure 2 is a rear perspective view of the initial state of the angle adjusting device of the torch rod according to an embodiment of the present invention.

3 is an exploded perspective view of the link unit according to an embodiment of the present invention, Figure 4 is an exploded perspective view of the operation unit for operating the link unit according to an embodiment of the present invention.

5 is a perspective view illustrating main parts of an operation unit for operating the link unit back and forth according to an embodiment of the present invention, and FIG. 6 is a perspective view illustrating a state in which the link unit is rear-rotated according to an embodiment of the present invention.

7 is a perspective view illustrating main parts of an operation unit for left and right operating a link unit according to an embodiment of the present invention, and FIG. 8 is a perspective view showing a state in which the link unit is left rotated according to an embodiment of the present invention.

9 and 10 are schematic diagrams showing a link connection structure according to an embodiment of the present invention.

Figure 11 is a perspective view of the initial state of the angle adjusting device of the torch rod according to another embodiment of the present invention, Figures 12 and 13 is a schematic view showing a link connection structure according to another embodiment of the present invention.

Figure 14 is a perspective view of the initial state of the angle adjusting device of the torch rod according to another embodiment of the present invention, Figure 15 is an exploded perspective view of the link portion of FIG.

1 to 4, the angle adjusting device 100 of the torch rod 10 according to an embodiment of the present invention includes a holder 200, a link unit 300, and a link operation unit 400. It is done by

The holder 200 serves to hold and fix the torch rod 10. The holder 200 may be changed into various shapes, and clamped to fix the circumferential surface of the torch rod 10 in various ways.

At this time, the torch rod 10 serves to cut the workpiece (not shown) or to weld the workpiece (not shown).

And, the link unit 300 is connected to the holder 200 serves to guide the forward and backward rotation of the torch rod 10 relative to the lower side of the torch rod 10 together with the holder 200. That is, the torch rod 10 is inclined in the front-rear direction by the link unit 300 on the basis of the lower side adjacent to or in contact with the workpiece or the workpiece.

In particular, when the torch rod 10 moves forward (-Y direction), the torch rod 10 is inclined to the rear side (+ Y direction) by the link unit 300.

On the contrary, when the torch rod 10 reverses (+ Y direction), the torch rod 10 is inclined to the front side (-Y direction) by the link unit 300.

This is to minimize the interference (resistance) with the workpiece or the workpiece to be moved when the torch rod 10 moves.

Here, the link unit 300 includes a first main link member 310, a second main link member 320, a first sub link member 330, and a second sub link member 340.

The first main link member 310 is linked to the rear upper portion of the holder 200, and the second main link member 320 is linked to the rear lower portion of the holder 200. That is, the first main link member 310 and the second main link member 320 are located above the second main link member 320 along the axial direction of the holder 200. ) Is linked to the holder 200.

In addition, the first main link connecting member includes a first straight link 312 directly connected to the holder 200, and a first bent link 314 extending and bent at one edge of the first straight link 312. It includes.

In addition, the second main link member 320 may include a second front bent link 322 directly connected to the holder 200, a second straight link 324 bent and extended at one edge of the second bent link, And a second rear bent link 326 extending bent at an end of the second straight link 324.

In this case, the first straight link 312 and the second straight link 324 are arranged in parallel with each other, the first bent link 314 and the second front bent link 322 and the second rear bent link 326 is Placed next to each other.

In addition, the first straight link 312 and the second straight link 324 is formed to be inclined rightward (θ) toward the rear side from the torch rod 10. Thus, the torch rod 10, the link unit 300 and the link operation unit 400 is as possible to surround the steel pipe of the cutting object or the welded object as possible to increase the contact area, stable welding work or cutting operation is possible. .

Therefore, the link connecting portion of the torch rod 10 is located below the link rotation center.

In addition, the first sub link member 330 is linked to the end of the first main link member 310 and the edge of the second main link member 320 together.

In other words, the upper side of the first sub-link member 330 is the end of the first bent link 314 of the first main link member 310 and the second rear bend of the second main link member 320 which are arranged in parallel with each other. Linked to the central portion with respect to the axial direction of the link 326.

The first sub link member 330 is connected to the first pivot shaft 332 which is fixed in position. At this time, the first pivot axis 332 'to be described later, is inserted into the bracket 510 is fixed.

Of course, the first sub link member 330 may be changed into various shapes.

In addition, the second sub link member 340 is linked to an end of the second main link member 320.

In other words, the second sub link member 340 is connected to the end of the second rear bent link 326 of the second main link member 320. At this time, a part of the second sub link member 340 is the same as the corresponding length of the first sub link member 330 connecting the first main link member 310 and the second main link member 320, and are parallel to each other. Is placed.

The second sub link member 340 is connected to the second pivot shaft 342 fixed to the bracket 510.

Accordingly, when the second sub link member 340 is rotated bidirectionally with respect to the second pivot shaft 342 by the link operation unit 400, the first main link member constrained to the first sub link member 330. The 310 and the second main link member 320 may tilt the holder 200 forward, backward, left and right.

Accordingly, the torch rod 10 is tilted back, front, left, and right.

Here, the link unit 300 is preferably connected to the rear side of the holder 200. That is, the first linear link 312 of the first main link member 310 and the second front bent link 322 of the second main link member 320 are not located on both sides of the holder 200 but are positioned up and down on the rear circumferential surface. Link to is connected. Thus, the holder 200 can be tilted as much as possible until the side-bottom direction is in contact with the object to be welded or the object to be welded, and thus the torch rod 10 can be tilted as much as possible in the left and right directions.

In addition, as the first linear link 312 of the first main link member 310 and the second linear link 324 of the second main link member 320 are formed to be inclined with respect to the horizontal line (θ), The object to be welded or the object to be bonded can be accommodated as much as possible between the torch rod 10 and the bracket 510.

In addition, the first sub link member 330 and the second sub link member 340 are formed in a straight line type, and the first main link member 310 and the second main link member 320 are disposed on the rear side of the holder 200. In the link-connected state, when the second main link member 320 is rotated, the torch rod 10 is inclined differently from the upright position and the position of the lower end portion is moved.

Accordingly, the first sub link member 330 and the second sub link member 340 are preferably formed to be bent by the inclination of the first bent link 314.

That is, the first sub link member 330 includes a first upper linear link 331, a first bent link 333, and a first lower linear link 335.

The first upper linear link 331 connects the first main link member 310 and the second main link member 320. More specifically, the first upper linear link 331 connects the first bent link 314 and the second rear bent link 326 parallel to each other.

In addition, the first bending link 333 extends bent in the direction of the holder 200 at the lower portion of the first upper linear link 331. In this case, the first bent link 333 is formed to be inclined at an inclination θ with respect to the first upper linear link 331 by the inclination θ of the first straight link 312 with respect to the horizontal line.

In addition, the first lower linear link 335 extends in parallel with the first upper linear link 331 at the end of the first curved link 333 and is connected to the first pivot shaft 332.

In addition, the second sub link member 340 includes a second upper linear link 341 and a second bent link 343.

The second upper linear link 341 is linked to an end of the second main link member 320, and is disposed in parallel with the first upper linear link 331.

The second bent link 343 extends in parallel with the first bent link 333 at a lower portion of the second upper linear link 341 and is connected to the second pivot shaft 342.

That is, the first bending link 333 and the second bending link 343 is formed to be inclined at the same angle as the first linear link 312, so that the torch rod 10 is inclined in a fixed position However, the contact portion and the contact portion are the same.

In particular, it is preferable that the first main link member 310 and the second main link member 320 are connected to and restrained by a connecting link member 350 parallel to the axial direction of the torch rod 10. This is because the first sub link member 330 and the connecting link member 350 distributes the force to operate the first main link member 310 and the second main link member 320, so that the first sub link member ( 330 is to improve the durability.

Meanwhile, as shown in FIG. 5, the link operation unit 400 includes a first external gear 410, a second external gear group 420, a worm gear 430, and a front and rear movable motor 440.

The first external gear 410 is fixedly connected to the second pivot shaft 342. At this time, the second pivot shaft 342 is fixedly connected to the lower side of the second sub-link member 340. Therefore, when the first external gear 410 rotates in both directions, the second pivot shaft 342 and the second sub link member 340 rotate in the same direction as the first external gear 410.

The first external gear 410 may be modified in various shapes.

The second external gear group 420 may be one second external gear 422 circumscribed to the first external gear 410, but is preferably made of a plurality of second external gears 422. This is to reduce the load on the second external gear 422 by reducing the number of second external gears 422.

For convenience, the second external gear group 420 is shown as two second external gear 422 is external to each other.

That is, any one second external gear 422 is meshed with the first external gear 410 so as to be externally engaged, and the other second external gear 422 is connected to any one of the second external gear 422. Gears are engaged externally.

In particular, the other second external gear 422 includes a driven gear 424. At this time, each of the second external gear 422 is fixed to the bracket 510 is connected to rotate.

In addition, the worm gear 430 is gear-coupled to another second external gear 422 located on the outermost side of the second external gear group 420. That is, the driven gear 424 of the other second external gear 422 is screwed to the worm gear 430. Thus, the power transmission direction is changed.

In addition, one side of the worm gear 430 is rotatably connected to the bracket 510 in the axial direction, and the other side includes a first spur gear 432.

In addition, the front and rear movable motor 440 includes a second spur gear 442 geared to be externally connected to the first spur gear 432.

As the worm gear 430 is gear-coupled to the driven gear 424, the front and rear movable motor 440 may be disposed in parallel with the first main link member 310 on a plane, according to an embodiment of the present invention. The width (width) of the angle adjusting device 100 can be reduced.

Therefore, as shown in FIG. 6, when the front and rear movable motor 440 is operated, the worm gear 430, the second external gear group 420, and the first external gear 410 are rotated in order. The second pivot shaft 342 and the second sub link member 340 are rotated in the same direction in association with the first external gear 410.

As the second sub link member 340 is rotated based on the second pivot shaft 342, the second main link member 320 is rotated with respect to the second sub link member 340.

In particular, the first main link member 310 is constrained to the second main link member 320 by the first sub link member 330 and the connecting link member 350 to be the same trajectory as the second main link member 320. As long as it is rotated in the same direction.

Therefore, the holder 200 is inclined, and the torch rod 10 is inclined in the front-rear direction based on the lower side.

At this time, the front and rear movable motor 440 is preferably a step motor.

On the other hand, the link unit 300 is preferably reciprocated left and right with the torch rod 10 by the left and right operating unit 500.

In particular, when the torch rod 10 moves to the right side (+ X direction), the torch rod 10 is inclined to the right side (+ X direction) by the left and right operating part 500.

On the contrary, when the torch rod 10 moves to the left side (-X direction), the torch rod 10 is inclined to the left side (-X direction) by the left and right operating unit 500.

Here, as shown in FIG. 7, the left and right operating parts 500 include a bracket 510, a rotating bush 520, a power transmission member 530, a gear member 540, and a left and right movable motor 550.

The bracket 510 serves to fix the first pivot shaft 332 and the second pivot shaft 342 in a rotatable position. Thus, the bracket 510 serves to support the link unit 300 from the front side.

In this case, the bracket 510 may be modified in various shapes.

In addition, the rotary bush 520 is fixed to the rear side of the bracket 510. That is, the rotating bush 520 is integrally manufactured or integrally welded to the bracket 510.

The power transmission member 530 is wound around the circumferential surface of the rotary bush 520 to generate a force for rotating the rotary bush 520. At this time, the power transmission member 530 may be variously applied, such as a belt or a chain.

In addition, the gear member 540 is fixed to the housing 560 to be rotatable. In addition, the power transmission member 530 is rotated indefinitely in a state in which the rotary bush 520 and the gear member 540 are wound.

At this time, the housing 560 is fixedly installed in any fixed body (not shown).

In particular, the rotary bush 520 is rotatably mounted to the housing 560.

The left and right movable motors 550 include a primary wheel gear 552. In addition, the driving wheel gear 552 is gear-coupled with the gear member 540. For convenience, the driving wheel gear 552 and the gear member 540 is shown as a spur gear shape, the number of the gear member 540 is shown one, but is not limited to the number.

Therefore, as shown in FIG. 8, when the left and right movable motors 550 are operated, the main wheel gear 552 is rotated to rotate the outer gear member 540 in the opposite direction.

As the gear member 540 is connected to the rotary bush 520 by the power transmission member 530, the rotary bush 520 is rotated in the same direction as the gear member 540.

In addition, as the bracket 510 is connected to the rotating bush 520, the bracket 510 is rotated in one direction based on the connecting portion of the rotating bush 520.

Therefore, the link part 300 supported by the bracket 510 is reciprocated in the left (+ X) direction and the right (-X) direction.

In particular, the rotating bush 520 is made of a cylindrical shape is inserted into the front and rear movable motor 440 therein, the front and rear movable motor 440 is preferably supported by the bracket 510 is connected.

Thus, it is possible to reduce the volume of the angle adjusting device 100 according to an embodiment of the present invention.

9 schematically shows the link unit 300 in the initial state of the angle adjusting device 100 according to an embodiment of the present invention. The reference numerals not described are replaced with those described above.

In addition, Figure 10 schematically shows the link unit 300 is operated to be inclined in the rear (+ Y) direction the upper side of the torch rod 10 in the angle adjusting device 100 according to an embodiment of the present invention. The reference numerals not described are replaced with those described above.

On the other hand, as shown in Figure 11, the angle adjusting device 100 of the torch rod 10 according to another embodiment of the present invention comprises a holder 200 and the link portion 300.

In particular, the link unit 300 includes a first main link member 310, a second main link member 320, a first sub link member 330, a second sub link member 340, and a connecting link member 350. )

In addition, the first main link member 310 and the second main link member 320 are formed in a straight line as a whole and are disposed in parallel with each other. The first main link member 310 and the second main link member 320 are provided horizontally with respect to the ground.

Thus, the link rotation center and the corresponding link connecting portion of the torch rod 10 are arranged in a straight line. Even when the link rotation center and the corresponding link connecting portion of the torch rod 10 are arranged in a straight line, when the welded object or the joined object is a flat plate type, the link portion 300 or the torch rod 10 can be tilted as much as possible. have.

Of course, the first main link member 310 and the second main link member 320 are linked to the rear side of the holder 200.

The first main link member 310 and the second main link member 320 may be modified in various shapes, and the number is not limited thereto.

The reference numerals not described are replaced with those described above.

12 schematically shows the link unit 300 in the initial state of the angle adjusting device 100 according to another embodiment of the present invention. The reference numerals not described are replaced with those described above.

In addition, Figure 13 schematically shows the link portion 300 is operated to be inclined in the rear (+ Y) direction the upper side of the torch rod 10 in the angle adjusting device 100 according to another embodiment of the present invention. The reference numerals not described are replaced with those described above.

14 and 15, the angle adjusting device 100 of the torch rod 10 according to another embodiment of the present invention includes a holder 200 and a link unit 300.

In particular, the link unit 300 includes a first main link member 310, a second main link member 320, a first sub link member 330, a second sub link member 340, and a connecting link member 350. )

In addition, the first main link member 310 and the second main link member 320 are formed in a straight line as a whole and are disposed in parallel with each other. In addition, the first main link member 310 is formed to be gently curved at the bent portion of the first main link member 310 according to an embodiment, the second main link member 320 according to an embodiment 2 is formed to be gently curved in the bending portion of the main link member (320).

This is to maximize the amount of forward and backward reciprocation of the first main link member 310 and the second main link member 320.

Of course, the first main link member 310 and the second main link member 320 are linked to the rear side of the holder 200.

The first main link member 310 and the second main link member 320 may be modified in various shapes, and the number is not limited thereto.

The reference numerals not described are replaced with those described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10: torch rod 100: angle adjustment device
200: holder 300: link portion
310: first main link member 320: second main link member
330: first sub link member 340: second sub link member
350: connecting link member 400: link operating portion
410: first external gear 420: second external gear group
422: second external gear 430: worm gear
440: front and rear operation motor 500: left and right operating parts
510: bracket 520: rotating bush
530: power transmission member 540: gear member
550: left and right movable motor 560: housing

Claims (7)

A holder for holding the torch rod;
A link unit connected to the rear side of the holder and guiding the torch rod forward and backward with respect to the lower side of the torch rod together with the holder; And
It includes a link operation unit for operating the link unit forward and backward,
The link unit may include: a first main link member linked to an upper portion of a rear side of the holder;
A second main link member linked to a lower rear side of the holder;
A first sub link member linked to an end of the first main link member and an edge of the second main link member, and connected to a first pivot shaft fixed in position; And
A second sub link member connected to an end of the second main link member and connected to a position pivoted second pivot shaft,
The link unit, the angle adjusting device of the torch rod further comprises a connecting link member which is connected to both sides of the link to the first main link member and the second main link member in parallel with the axial direction of the torch rod.
delete The method of claim 1,
The first sub link member may include: a first upper linear link connecting the first main link member and the second main link member;
A first curved link extending bent from the lower portion of the first upper linear link toward the holder; And
A first lower linear link extending parallel to the first upper linear link at an end of the first curved link and connected to the first pivot axis;
The second sub link member is linked to an end of the second main link member, the second upper linear link disposed in parallel with the first upper linear link; And
And a second bending link extending parallel to the first bending link at a lower portion of the second upper linear link and connected to the second pivot shaft.
The method of claim 1, wherein the link operation portion,
A first external gear fixed to the second pivot shaft which fixes the second sub link member;
A second external gear group circumscribed to the first external gear and composed of a plurality of second external gears fixed in position;
A worm gear that is gear-coupled to the second outer gear of the second outer gear group and has a first spur gear; And
By rotating the first external gear bidirectionally by rotating the second spur gear that is circumscribed with the first spur gear, the first main link member and the second main link with respect to the first pivot axis and the second pivot axis. Torch rod angle control device comprising a front and rear movable motor for rotating the link member back and forth.
The method of claim 1,
The link unit is an angle adjusting device of the torch rod, characterized in that the left and right reciprocating rotation with the torch rod.
According to claim 5, The left and right operating portion,
A bracket for supporting the link portion while fixing the first pivot shaft and the second pivot shaft;
A rotating bush fixed to the bracket;
A power transmission member wound around the rotation bush and generating a force to rotate the rotation bush;
A gear member connected to the power transmission member; And
And a left and right movable motor configured to rotate the gear member to reciprocate the link part left and right.
The method according to claim 6,
The rotary bush inserts the front and rear movable motor included in the link operation unit therein;
The front and rear movable motor is an angle adjusting device of the torch rod, characterized in that fixed to the bracket.

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