KR101246302B1 - Apparatus for setting the welding feeder - Google Patents

Abstract

The present invention relates to an apparatus for fixing a weld feeder in a required position on a three-dimensional space. According to an embodiment of the present invention, a mechanical part having a first clamp to which a welding feeder can be detachably coupled, and a first mounting block to which the first clamp can be rotatably coupled, is transferred to the front and rear direction. The present invention provides a fixing device for a welding feeder including a forward and backward transfer unit, a shanghai transport unit capable of transporting the forward and backward transport unit in a vertical direction, and a left and right transport unit capable of transporting the Shanghai transport unit in left and right directions.

Description

Apparatus for setting the welding feeder}

The present invention relates to an apparatus for fixing a weld feeder in a required position on a three-dimensional space.

Conventionally, in the case of welding a workpiece such as iron pieces, a worker performs a welding operation by moving a welding feeder along a welding surface. When multiple welding is required, such as when the workpiece is thick, additional welding operations on the same welding surface are repeated after the first welding operation on the welding surface. Therefore, the repetitive welding work on the same welding surface has a disadvantage in that the progress of the entire work is slow.

On the other hand, the welding jig has been developed in consideration of the convenience of welding, the prior art has a problem that the versatility of the welding machine is greatly limited by the change in the position of the welding machine according to the shape characteristics of the workpiece such as the automobile chassis.

On the other hand, in order to increase the versatility, a welding device using a robot arm has been developed, but it is difficult to be widely used because it is too expensive due to the complicated programming and the need for dedicated programming for motion control of joints.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and is intended to enable free positioning of at least one weld feeder in space.

In particular, when using a pair of weld feeders, it is possible to fix the position of the weld feeders at a specific position in three dimensions and to change the relative position of another weld feeder with respect to one weld feeder. .

In accordance with an aspect of the present invention, a mechanical part having a first clamp to which a welding feeder can be detachably coupled and a first mounting block to which the first clamp is rotatably coupled may be provided. The present invention provides a fixing device for a weld feeder including a front and rear conveying unit which can be transferred in the front and rear direction, a shanghai conveying unit which can transport the front and rear conveying unit in the vertical direction, and a left and right conveying unit which can transport the shanghai conveying unit in the left and right directions.

Further, the mechanism unit is slidably coupled to the second mounting block and the second mounting block, which is slid from one side of the first supporting block and is capable of adjusting the separation distance with respect to the first supporting block, and the other welding feeder is separated. Possibly combined.

Here, the first hole and the second block block is formed so that the first hole and the second hole is spaced apart, the first clamp or the second clamp and the hinge hole formed at a position corresponding to the first hole and And a rotation block corresponding to the second hole and spaced apart from the hinge hole, the rotating block having an arc-shaped long hole centered on the hinge hole, and coupled to the first hole and the hinge hole to form a rotating shaft of the rotating block. Passing through the hinge pin and the long hole is coupled to the second hole, it may include an angle adjusting device for fixing the rotary block by pressing the periphery of the long hole.

In this case, at least one of the front and rear conveying unit, the left and right conveying unit, and the shanghai conveying unit is disposed in parallel with the guide rail between the support, a pair of parallel guide rails fixed to the support, and the guide rails, and a thread is formed on an outer circumferential surface thereof. It may include a screw rod and a slider movable in the longitudinal direction of the screw rod by riding the guide rail by the rotation of the screw rod.

In addition, the left and right conveying portion, a support rod, a pair of side-by-side guide rail provided in the support, the screw rod is disposed on the support parallel to the guide rail between the guide rails, the thread is formed on the outer peripheral surface, the The guide rod is movable in the longitudinal direction of the screw rod by the rotation of the screw rod, the front surface is coupled to the slider to extend to the rear of the slider and the slider provided with the shanghai sending portion, the front and rear conveying portion and the mechanism portion And, it may include a weight for reducing the moment generated in the slider by the load of the shanghai sending unit, the front and rear conveying unit and the mechanism.

Furthermore, the weight may be a shelf woven into a frame.

According to the embodiment of the present invention, the cost is low by not using the articulated robot, but it has a general purpose that is not largely bound to the specific shape of the workpiece.

In addition, since a pair of welding feeders can be used, there is an advantage that can quickly process a repeated welding operation. Furthermore, the installation position of these welding feeders can be fixed at any position on the three-dimensional space, and in particular, the spacing between the welding feeders and the electrode direction can be changed, thereby increasing the versatility.

1 is a perspective view schematically showing a fixing device of a welding feeder according to an embodiment of the present invention.
Figure 2 is an enlarged perspective view of the main part of Figure 1;
Figure 3 is an exploded perspective view of the mechanism portion employed in the embodiment shown in FIG.
Figure 4 is a schematic cross-sectional view of the left and right transfer unit employed in the embodiment shown in FIG.
5 is a conceptual diagram showing the positional relationship of the weld feeder installed in the embodiment shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described the configuration, function and operation of the fixing device of the welding feeder according to the present invention.

In the following description, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. Also, the singular forms “a”, “an” and “the” include plural forms unless the context clearly indicates otherwise. In addition, for convenience of description, a three-dimensional coordinate system is described in the drawings, and the direction will be described based on the drawing.

The fixing device of the welding feeder according to the present invention includes a mechanism portion having a first clamp to which the welding feeder can be detachably coupled, and a first mounting block to which the first clamp can be rotatably coupled. It includes a front and rear conveying unit capable of transferring in the front and rear direction, a Shanghai conveying unit capable of conveying the front and rear conveying unit in the vertical direction, and a left and right conveying unit capable of conveying the Shanghai conveying unit in the left and right direction.

The mechanism part may fix one welding feeder through the first clamp. As described later, the mechanism part may further include a second clamp for fixing another welding feeder, thereby fixing the two welding feeders together. In the following description, an embodiment in which two welding feeders are installed will be described. The front and rear conveying part, the shanghai conveying part, and the left and right conveying part are each capable of linearly moving the mechanism part in any one axial direction on three dimensions. In addition to the specific configuration described below, these transfer unit may be a linear movement means such as an EL guide of a known configuration.

1 to 2, the fixing device 10 of the welding feeder according to the embodiment is installed on the shelf type work platform 20. This worktable 20 can be changed to a structure of a different shape, it can be omitted depending on the selection.

The mechanism part 1 is movable by the front-back conveying part 2 in the front-back direction (x-axis). In addition, the front and rear conveying unit 2 is movable in the vertical direction (z-axis) by the shanghai conveying unit 3, accordingly, the vertical height of the mechanism unit 1 is also adjusted. Similarly, the front and rear conveying part 2 can be conveyed in the left and right direction (y-axis) by the left and right conveying part 4, and consequently, the mechanism part 1 can also be conveyed in the left and right direction. Therefore, the mechanical part 1 and the welding feeders W1 and W2 coupled thereto by the front and rear conveying part 2, the shanghai conveying part 3, and the left and right conveying part 4 can be moved to any position in the three-dimensional space.

2 to 3, the mechanism part 1 includes a first mounting block 11 coupled to the slider of the front and rear transfer unit, and a first clamp 12 rotatably coupled to the first mounting block 11. Is provided. In addition, in the structure which can be omitted, the mechanism part 1 is shown with the 2nd clamp 14 provided in parallel with the 1st clamp 12. As shown in FIG.

The first clamp is a plate member rotatably coupled to the front surface of the first mounting block. In addition, the welding feeder is detachably fixed to the first clamp. In detail, in the illustrated embodiment, the first clamp 12 includes a rotary block 121, a hinge pin 122, and an angle adjuster 123.

Specifically, referring to FIG. 3, a first hole 111 and a second hole 112 spaced apart from each other are formed on the front surface of the first mounting block 11. The inner circumferential surface of the first hole 111 or the second hole 112 may be threaded. In the drawing, the first hole 111 and the second hole 112 are formed side by side at the same height, but the second hole may be formed at a height higher or lower than the first hole.

The rotating block may be a plate member facing the front of the first mounting block 11.

The hinge block 121a is formed in the rotary block 121 to correspond to the first hole 111, and also corresponds to the second hole 112, and an arc-shaped long hole 121b spaced apart from the hinge hole 121a. Is formed. At this time, the arc of the long hole (121b) has a radius from the center of the first hole 111 to the center of the second hole 112, the center point is the same as the imaginary arc that is the center of the hinge hole (121a) Do. The length of the long hole may vary according to a user's selection, and the length of the long hole in which the rotating block can be rotated is limited according to the length of the long hole.

The hinge pin 122 is coupled to the first hole 111 by passing through the hinge hole 121a. The hinge pin 122 may be replaced with a bolt or an equivalent thereof that is screwed to the thread formed on the inner peripheral surface of the first hole (111). Hinge pin 122 is a rotation center of the rotary block 121.

The angle adjusting opening 123 is coupled to the second hole 112 through the long hole 121b, and when rotated in any direction, the main block part of the long hole 121b is rotated to rotate at a predetermined angle. To fix to the first mounting block (11). The angle adjusting device 123 includes a bolt body 123a and a head 123b having an area larger than the width of the long hole at the end of the bolt body, and the bolt body is screwed into the second hole to rotate the head. Depending on the direction, it is possible to press or release the rotary block to the first mounting block.

Furthermore, a semi-cylindrical recessed groove 121c is formed on one side of the rotary block 121 to face a welding feeder having a substantially cylindrical shape. In addition, the fixing block 16 is detachably coupled to the rotary block 121 and presses and fixes the welding feeder applied to the recessed groove 121c. The fixing block 16 has a semi-cylindrical corresponding groove 161 corresponding to the recessed groove 121c. The recessed groove 121c and the corresponding groove 161 meet with each other to form an elliptical cross section or a circular cross section. At this time, the inner side of the recessed groove or the corresponding groove can be elastically deformed so as to securely fix the welding feeder, and a sheet member (not shown) having a non-slip surface may be further coupled. Such sheet members may be synthetic rubber.

Since the first clamp 12 is rotatably coupled on the front surface of the first mounting block 11, the first clamp 12 may rotate the angle of the electrode of the welding feeder on the y-z plane.

In an additional element that can be omitted, the mechanism part is slidably coupled to the second support block and the second support block, which is slid from one side of the first support block to allow a spaced interval adjustment to the first support block, and the other A second clamp is provided to which the weld feeder can be detachably coupled.

2 to 3 again, the sliding means 15 is provided at one side of the first mounting block 11. This sliding means 15 can move the slider 151 in the left-right direction (y-axis). The sliding means 15 may have the same configuration as the left and right conveying portions described later, or may be replaced with a linear movement means of another known configuration.

The second mounting block 13 and the second clamp 14 are coupled to the front surface of the slider 151. If the front area of the slider is large enough, the slider itself may be the second mounting block.

Meanwhile, the second mounting block 13 and the second clamp 14 are symmetrical to the first mounting block 11 and the first clamp 11, respectively, and have the same configuration. Therefore, a weld feeder is detachably coupled to the second clamp 14, and the weld feeder coupled to the second clamp 14 is rotatable on the front surface (y-z plane) of the second mounting block 13.

On the other hand, the sliding means 15 is shown that the operating direction of the left and right direction (y-axis), the sliding means of the sliding means according to the user's choice of the up and down direction (z-axis) or the front-rear direction (x-axis) It can be made of).

By having the second mounting block and the second clamp, there is an advantage that a pair of welding feeder can be fixed at the same time. A pair of welding feeders enable two welding operations on the same welding surface or welding two welding surfaces spaced apart from each other, thereby improving welding efficiency of the workpiece.

In addition, as the second spacer block can be adjusted in the first spacer block, the electrode spacing of the parallel welding feeder is adjustable. In addition, as the welding feeder is rotatable in each clamp, the electrode direction of each welding feeder can be adjusted. Therefore, it is possible to set the position and electrode direction of each welding feeder with respect to the welding surface of various formations, thereby increasing the versatility.

In this case, the clamps may be rotatable on the front surface of the mounting block, may maintain a specific angle rotated, and if the welding feeder can be fixed, it may have a configuration other than the above-described embodiment. For example, the clamp is in a state of being pressed to the mounting block by the elastic member, and may be configured to maintain a predetermined angle by the frictional force of the contact surface between the clamp and the mounting block. In addition, as a means for fixing the welding feeder, mechanical gripping means such as forceps, magnetic means such as magnetic holders may be dedicated.

At least one of the front and rear conveying unit, the left and right conveying unit and the shanghai conveying unit of the present invention is disposed in parallel with the guide rail between the support, a pair of parallel guide rails fixed to the support, and the guide rails, It comprises a screw rod and a slider that is movable in the longitudinal direction of the screw rod by the guide rail by the rotation of the screw rod is formed.

Looking at the configuration of the left and right transfer unit 4 with reference to Figures 1, 2 and 4, the support 44 is provided on the upper and left sides of the work table 20. Both ends of the support 44 are formed with a pair of reinforcing plates 45 side by side toward the front.

A pair of guide rails 41 are coupled to each support 44 at different heights so as to protrude from the support. The cross section of this guide rail 41 does not necessarily need to be circular.

Between the guide rails 41 is disposed a screw rod 42, both ends rotatably coupled to each reinforcing plate. A thread is formed on the outer circumferential surface of the screw rod 42. The guide rails and the threaded rods are parallel to each other while being spaced apart from each other. In addition, one end of the screw rod 42 protrudes through the reinforcing plate 45, and this one end is connected to the driving motor 421. At this time, the driving motor 421 is capable of changing the rotation direction, the screw rod 42 is rotatable clockwise or counterclockwise in accordance with the rotation of the drive motor 421.

Alternatively, in place of the drive motor 421, a worker may be provided with a handle (see H in FIG. 2) for rotating the screw rod.

Referring to FIGS. 2 and 4, the slider 43 surrounds the outer circumferential surface of the guide rail 41, and is screwed to the gripper 431 sliding with respect to the guide rail 41 and the screw rod 42. A spline 432 is provided. The gripper 431 surrounds at least a portion of the guide rail 41 so that the slider 43 is not separated from the guide rail 41 during the sliding process. Since the slider 43 is hung on each guide rail 41 by a pair of grippers 431, the slider 43 is moved from the guide rail 41 by the load of the slider and other components attached to the slider. Do not let go. On the other hand, the spline 432 moves the slider 43 in the longitudinal direction of the screw rod 42 according to the rotation direction of the screw rod.

The configuration of the left and right conveying unit is applicable to the shanghai conveying unit or the front and rear conveying unit by changing the direction in which the sliding is made. It is also applicable to sliding means for conveying the second mounting block relative to the first mounting block.

Furthermore, the above-mentioned shanghai conveying part 3, the front and rear conveying part 2, and the mechanism part 1 are coupled to the front surface of the slider of the left and right conveying part 4 in order. Therefore, a large moment acts on the slider 43 of the left and right conveying unit 4 by these components provided to protrude from the front of the right and left conveying unit 4, thereby bringing about deformation of the guide rail 41 of the left and right conveying unit 4, and the like. There is a concern.

In order to solve this, in the embodiment of the present invention is coupled to the slider 43 so as to extend to the rear of the slider 43 of the left and right transfer unit 4, and the shanghai conveying unit 3, the front and rear conveying unit 2 and the It further includes a weight (5) for reducing the moment generated in the slider 43 by the load of the mechanism (1).

The weight 5 is located at the rear side of the slider by brackets 433 coupled to the top and rear ends of the slider 43. That is, as shown in FIG. 4, components such as the shanghai sending part 3 are mounted on the left side of the slider 43 based on the left and right moving parts 4, and the weight 5 is mounted on the right side.

The moment generated in the slider generated by the weight cancels the moment acting on the slider by the shanghai sending part or the like to reduce the deformation of the slider and the guide rail.

Furthermore, as shown in FIG. 1, the weight 5 may be a shelf 51 woven into a frame. The shelf 51 can be equipped with a wire winding roll (not shown) supplied to the welding feeder. This makes it possible to improve the space utilization while reducing the moment acting on the slider.

Hereinafter, with reference to Figure 5, look at the action of the fixing device of the welding feeder according to an embodiment of the present invention.

Figure 5 shows a schematic illustration of the degree of position deformation of the pair of welding feeder relative to the worktable. Hereinafter, for convenience of description, the welding feeder coupled to the first clamp will be referred to as the first welding feeder W1, and the welding feeder coupled to the second clamp will be referred to as the second welding feeder W2.

1 and 5, the left and right transfer unit 4 may transfer both welding feeders W1 and W2 in the y-axis direction V2 and the shanghai transfer unit 3 coupled to the left and right transfer unit 4. ) May transfer both welding feeders W1 and W2 in the z-axis direction V3. In addition, the front and rear conveying unit 2 coupled to the shanghai conveying unit 3 may transfer both welding feeders W1 and W2 in the x-axis direction V1. As a result, by properly operating the left and right transfer unit 4, the shanghai transfer unit 3, or the front and rear transfer unit 2, both welding feeders W1 and W2 can be moved to any position in the three-dimensional space.

The second welding feeder W2 moves in the y-axis direction V2 with respect to the first welding feeder W1 by the operation of the sliding means in the mechanism part, thereby adjusting the distance between the first and second welding feeders. Will be. In addition, the first welding feeder (W1) and the second welding feeder (W2) in the electrode direction (V4) of each welding feeder by the rotation of each of the first clamp and the second clamp inclined close to each other or far from each other Can be installed at an angle.

In the mechanism, adjustment of the separation interval between the first welding feeder and the second welding feeder and the deformation of the inclination of the electrode direction are performed on the y-z plane. As a result, the three-dimensional movement by the left and right transfer unit, the shanghai transfer unit, and the front and rear transfer unit and the separation interval of the welding feeders by the mechanism unit and the inclination deformation of the electrode direction are combined, thereby greatly increasing the accessibility of the weld feeder to various welding surfaces of the workpiece. It can be improved.

10: fixing device
1: Mechanical part
Reference Signs List 11: first mounting block 111: first hole 112: second hole 12: first clamp
121: rotating block 121a: hinge hole 121b: long hole 121c: recessed groove
122: hinge pin 123: angle control 123a: bolt body 123b: head
13: second support block
14: second clamp
15: sliding means 151: slider 16: fixed block 161: corresponding groove
2: before and after transfer
3: Shanghai Shipping
4: left and right transfer unit
41: guide rail 42: screw rod 421: drive motor
43: slider 431: gripper 432: spline 433: bracket
44: support 45: reinforcement plate H: handle
5: weight
W1, W2: Welding Feeder
V1: x-axis direction V2: y-axis direction V3: z-axis direction V4: electrode direction
20: work table

Claims (6)

A mechanical part having a first clamp to which the welding feeder can be detachably coupled, and a first mounting block to which the first clamp can be rotatably coupled;
A front and rear conveying part capable of conveying the mechanism part in a forward and backward direction,
Shanghai sending unit which can transfer the front and rear transfer unit in the vertical direction and
And a left and right transport unit capable of transporting the shanghai transport unit in a left and right direction, wherein the mechanism unit is slid from one side of the first mounting block to allow a distance between the first mounting block and the second mounting block to be adjusted. It is rotatably coupled to the two-row block, and further includes a second clamp that can be detachably coupled to the other welding feeder,
A first hole and a second hole are formed spaced apart from the first support block or the second support block,
The first clamp or the second clamp
A hinge block formed at a position corresponding to the first hole, a rotating block spaced apart from the hinge hole corresponding to the second hole, and having an arc-shaped hole centered on the hinge hole;
A hinge pin coupled to the first hole and the hinge hole to form a rotating shaft of the rotating block;
Passing through the long hole is coupled to the second hole, the fixing device of the welding feeder including an angle adjusting device for fixing the rotary block by pressing the periphery of the long hole. delete delete In claim 1,
At least one of the front and rear transfer unit, left and right transfer unit, Shanghai transfer unit
support fixture,
A pair of side-by-side guide rails fixed to the support,
A screw rod disposed in parallel with the guide rail between the guide rails and having a thread formed on an outer circumferential surface thereof;
And a slider movable along the guide rails in the longitudinal direction of the screw rod by rotation of the screw rod. In claim 1,
The left and right transfer unit
A pair of side by side guide rails fixed at each support,
A screw rod disposed on the support parallel to the guide rail between the guide rails and having a thread formed on an outer circumferential surface thereof;
The slider is movable in the longitudinal direction of the screw rod by the rotation of the screw rod, the front surface is provided with the shanghai sending portion, the front and rear conveying portion and the mechanism portion and
And a weight coupled to the slider so as to extend rearwardly of the slider, the weight reducing the moment generated in the slider by loads of the shanghai sending part, the front and rear conveying part, and the mechanism part. The method of claim 5,
The weight is a fixture of the welding feeder is a shelf woven into the frame.

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