KR20220153252A - Position device for welding and a rotary type welding apparatus with the same - Google Patents

Abstract

Disclosed is a rotary welding device including a device for fixing a position for welding. The device for fixing a position for welding includes: a casing through which a shaft hole is formed to receive a rotating shaft therein; the rotating shaft in which a hollow portion is formed in the longitudinal direction, and which is inserted into the shaft hole of the casing, and has a threaded portion at one end and a flange portion at the other end; and a rotating plate coupled to the flange portion to rotate together with the rotating shaft. A nut and a bearing are sequentially coupled from the outside toward the inside of the threaded portion to the rotating shaft between the end thereof, wherein the threaded portion is formed on the end, and the casing. A drive gear and a bearing are coupled to the rotating shaft between the casing and the flange portion and an external drive motor is connected to the drive gear so that rotational force is delivered to the rotating shaft. The device for fixing a position for welding further includes a jig that is of a certain length, is inserted through the hollow portion of the rotating shaft, and has a threaded portion at one end and a jig portion at the other end to fix and support an object to be welded. Accordingly, the position welding device with an internal hollow portion for a rotary welding device enables efficient welding processing of various shapes of workpieces.

Description

Position fixing device for welding and rotary welding device including the same {Position device for welding and a rotary type welding apparatus with the same}

The present invention relates to a rotary welding device.

In general, a welding device is a technology for bonding the same material or different materials, and its utilization is gradually increasing in various industrial fields including automobile and home appliance manufacturing.

As a welding device, Republic of Korea Utility Model Registration No. 20-0248918, a welding device (registration date: September 19, 2001) is disclosed.

The welding device first fixes the object to be welded with a chuck or the like on a turntable rotatably connected to an external drive motor, and then welds the object to be welded with a torch while rotating the rotating plate. When the object to be welded is placed on the rotating plate, manually After vertically moving the material pressure support device fixed to the frame downward along the support rod to approach the object to be welded, the material pressure support device connected to the air cylinder is moved to support and fix the upper portion of the object to be welded. In addition, an angle adjusting device is provided inside the fuselage so that welding can be performed by changing the inclination angle of the turntable by manipulating the handle.

In such a conventional rotary welding device, it is not suitable for welding cylindrical members having various diameters, and in the case of welding a metallic flexible hose, the long hose is twisted as the turntable rotates, making it impossible to weld. Occurs. Moreover, in the case of welding the inner surface of the flange or the like, it is difficult to fix the location of the torch in close proximity to the inner surface of the flange or the like. In addition, there is a problem in that it is difficult to weld a base material having an empty interior such as a hollow cylinder due to a fixed position of the torch.

Republic of Korea Utility Model Registration No. 20-0248918, welding device (registration date: September 19, 2001)

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to efficiently process various types of welded objects according to the situation by providing a position welding device having a structure in which a hollow part is formed inside a rotary welding device. is to make it possible

Another object of the present invention is to provide a position fixing device having an improved structure so as to maintain straightness of upper and lower jigs supporting a weld even when the inclination angle of the welding position fixing device is changed.

Another object of the present invention is to provide a rotary welding device having a position fixing device for welding having the above characteristics.

As an embodiment, the position fixing device for welding of the rotary welding device includes a casing through which a shaft hole is formed so as to insert a rotating shaft therein; A hollow part is formed in the longitudinal direction inside and inserted into the shaft hole of the casing, a threaded part is formed at one end and a flange part is formed at the other end, and a nut and a bearing are formed on the rotary shaft between the casing and one end where the screw part of the rotating shaft is formed. A rotating shaft coupled in order from the outside to the inside of the screw portion, a bearing and a drive gear coupled to the rotation shaft between the casing and the flange portion, and an external drive motor connected to the drive gear to receive rotational force; And a jig including a rotating plate coupled to the flange portion to rotate together with the rotating shaft, having a certain length and being inserted through the hollow of the rotating shaft, having a threaded portion formed at one end and a jig portion formed at the other end to support and fix the welded object. more includes

The jig of the position fixing device for welding is formed with a hollow part penetrating the inside in the longitudinal direction, and is configured to be connected to the casing as supporting and fixing another jig part positioned opposite to the jig, so that when the inclination angle of the casing changes, It further includes a jig frame that rotates together with the casing.

In the rotary welding device according to the present invention, the lower jig can be easily replaced according to the shape and size of the object to be welded, and if necessary, the lower jig is removed and a welding torch or a long straight object to be welded is introduced into the rotating shaft to perform welding. can be conveniently performed.

In addition, there is an advantage in that the welding condition of the welding surface can be improved by properly supplying the protective gas to the welding part of the rotating object to be welded by inserting the protective gas hose through the inner through hole of the lower jig during the welding operation.

In addition, according to the present invention, the jig frame supporting and fixing the upper jig is configured to be directly connected to the casing, so that the jig frame rotates with the casing when the inclination angle is changed, thereby maintaining the straightness of the upper and lower jigs, so that the upper jig needs to be readjusted after the inclination angle changes. The advantage of not having it is that the overall efficiency of the welding operation can be greatly improved.

1 is an exploded perspective view showing the internal configuration of a position fixing device for welding according to an embodiment of the present invention.
Figure 2 is a front view showing an example of a rotary welding device having a position fixing device for welding according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing a state in which the jig according to an embodiment of the present invention is inserted into the inner rotating shaft of the position fixing device for welding.

The present invention described below may apply various transformations and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description.

However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In addition, terms such as first and second may be used to classify and describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

In addition, when at least one different embodiment is described in this application, all or part of the components of each embodiment can be merged and mixed with each other, even if there is no special description, within the scope of not departing from the technical spirit of the present invention. .

1 is an exploded perspective view showing the internal configuration of a position fixing device for welding according to an embodiment of the present invention, Figure 2 is a front view showing an example of a rotary welding device having a position fixing device for welding according to an embodiment of the present invention Figure 3 is an exploded perspective view showing a state in which the jig according to an embodiment of the present invention is inserted into the inner rotating shaft of the position fixing device for welding.

As shown, the position fixing device 100 for welding of the present invention is largely composed of a casing 1, a rotating shaft 6 inserted into the casing 1 and rotated, and a rotating plate 7. The casing 1 has a shaft hole formed therein so that the rotary shaft 6 is inserted through it, and is usually made of casting, but is not limited thereto.

The rotating shaft 6 is rotated by receiving rotational force from an external drive motor 11, etc., and has a threaded portion 6a at one end and a flange portion 6b at the other end. A bearing 2 and a drive gear 5 are coupled on the rotary shaft 6 between the flange part 6b of the rotary shaft 6 and the casing 1, and the other end of the rotary shaft where the threaded part 6a is located has a bearing A nut (3) and a bearing (2) are coupled to the rotation shaft. For example, in which the bearing nut 3 and the bearing 2 are coupled, the outer nut 3a, the bearing washer 4, the inner nut 3b, and the bearing 2 from the outside to the inside of the threaded portion 6a. may be coupled in sequence, and the bearing is preferably a tapered roller bearing.

The power of the drive motor 11 is transmitted to the drive gear 5 through the reduction gear 15, and it is preferable that the drive gear 5 is connected to the encoder gear 16 connected to the encoder 16a. do.

An angle adjusting shaft 9 is coupled to both sides of the casing 1, and a fan-shaped angle adjusting gear 13 is rotatably coupled to the angle adjusting shaft 9. The power gear 14 for angle adjustment configured to rotate by the manipulation of the angle adjustment handle 57 is meshed with the angle adjustment gear 13 to receive power for adjusting the inclination angle.

Reference numeral 10 not described in FIG. 1 denotes a unit bearing for supporting and fixing the angle adjusting shaft 9 to the position body 54 of FIG. 2 .

The rotating plate 7 is for seating and supporting the object to be welded and is coupled to the flange portion 6b with a screw or the like.

A lower jig 56 as shown in FIG. 3 may be inserted into the inner hollow of the rotary shaft 6, and the lower jig 56 includes a jig base shaft 56a, a screw part 56b, and a jig part. (56c) is preferred. A bushing 58 is interposed between the lower jig 56 and the rotary shaft 6, and after the lower jig 56 is inserted into the rotary shaft 6, the threaded portion 56b of the lower jig 56 The jig shaft length adjusting nut 59 and the anti-loosening nut 60 are coupled in order. When the jig shaft length adjustment nut 59 is turned, the lower jig 56 moves forward and backward due to screw rotation with the screw part 56b of the lower jig 56, so that the position of the jig part 56c can be adjusted.

It is preferable that a through hole is formed in the inside of the lower jig 56 in the longitudinal direction, and a shielding gas hose for welding may be inserted into the through hole.

The operating principle of the position fixing device according to the present invention having the above configuration and the rotary welding device having the position fixing device will be described in detail.

First, the lower jig 56 is positioned at an appropriate height using the jig shaft length adjustment nut 59 in consideration of the size of the object to be welded 70, and then connected to the lower jig 56 and the casing 1 The object to be welded 70 is fixed using the upper jig 55 fixedly supported on the jig frame 53 configured to be. The upper jig 55 is provided at a position opposite to the lower jig 56 . The upper jig 55 is preferably configured to be connected to the air cylinder 52 to move forward and backward. In the present invention, when the jig frame 53 supporting the upper jig 55 is connected to the casing 1 and the inclination angle of the casing 1 is changed by operating the angle adjusting handle 57, the Since the jig frame 53 also rotates by a given inclination angle, the straightness of the upper and lower jigs 55 and 56 is accurately maintained. Conventionally, the upper jig 55 is supported and fixed by a separate frame, etc., and when the inclination angle of the position fixing device is changed, the straightness of the lower jig 56 and the upper jig 55 is misaligned, causing the upper jig 55 to It solved the inconvenience of having to readjust.

When the object to be welded 70 is supported and fixed to the upper and lower jigs 55 and 56, the welding torch 80 is moved near the welding work target part of the object to be welded 70 and the rotating plate 7 is driven. welding work will be performed. At this time, the lower jig 56 rotates together with the rotating plate 7.

If it is necessary to change the angle of the position fixing device 100, when the angle adjusting handle 57 is turned, the rotational force of the angle adjusting handle 57 is transmitted to the angle adjusting power gear 14, and then the angle adjusting power By rotating the gear 13 for angle adjustment, which is engaged with the gear 14, the position fixing device 100 rotates by a desired angle.

Since a hollow part penetrating in the longitudinal direction is formed inside the lower jig 56, when welding the object to be welded 70 having a cylinder shape, etc., a shielding gas hose for welding is inserted into the lower jig 56. There is an advantage in that a protective gas can be supplied to the inside of the object to be welded 70 by drawing in. At this time, since the protective gas hose inserted into the lower jig 56 does not rotate even if the rotary plate 7 rotates, the protective gas can be stably supplied to the welding portion of the object to be welded 70 without fear of twisting the hose.

In the above, the configuration in which the lower jig 56 is inserted into the rotating shaft 6 has been described as an example, but the same welding operation may be performed with the lower jig 56 removed. In this case, one end of the object to be welded 70 is supported by the upper jig 55, and the other end can be supported by a fixing means such as a chuck, jig, or clamp on the rotating plate 7, and the object to be welded has a certain length as shown in the drawing. In the case of a member having a cylindrical shape, it can be discharged through a hollow shaft formed through the rotating plate 7 and the rotating shaft 6 after completion of the welding operation.

Also, after removing the lower jig 56, the welding torch 80 may be inserted into the rotating shaft 6. In the conventional welding device, the torch is mainly fixed to the upper part of the welding device. When trying to weld the inner surface of the flange, etc., which is a welded object fixed and supported by a chuck on the top of the rotating plate, etc. There were limits.

That is, there was a problem that it was difficult and cumbersome to accurately position the welding torch on the welding portion of the inner surface of the flange or the like. According to the present invention, since the welding torch 80 can be inserted through the inside of the rotating shaft 6, the welding operation can be performed accurately and conveniently at the desired position of the object to be welded with a flange or a blind spot inconvenient for welding. do.

In the case of welding an object having a long shape in the longitudinal direction, such as a flexible hose, the welding operation may be performed after inserting the flexible hose, which is the object to be welded, into the inside of the rotating shaft 6.

The lower jig 56 may be manufactured in various shapes as needed, and in some cases, only the jig part 56c of the lower jig 56 may be replaced with a desired shape. Therefore, it is easy to install and replace the lower jig 56 according to the shape and size of the object to be welded.

According to the above described in detail, the rotary welding apparatus according to the present invention can easily replace the lower jig according to the shape and size of the object to be welded, and if necessary, remove the lower jig and insert a welding torch or a long straight line into the rotating shaft. Welding work can be performed conveniently by retracting the object to be welded on the upper part.

In addition, there is an advantage in that the welding condition of the welding surface can be improved by properly supplying the protective gas to the welding part of the rotating object to be welded by inserting the protective gas hose through the inner through hole of the lower jig during the welding operation.

In addition, according to the present invention, the jig frame supporting and fixing the upper jig is configured to be directly connected to the casing, so that the jig frame rotates with the casing when the inclination angle is changed, thereby maintaining the straightness of the upper and lower jigs, so that the upper jig needs to be readjusted after the inclination angle changes. The advantage of not having it has the effect of greatly improving the efficiency of the welding operation as a whole.

On the other hand, the embodiments disclosed in the drawings are only presented as specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that other modified examples based on the technical idea of the present invention can be implemented in addition to the embodiments disclosed herein.

1...casing 2...roller bearing
3...bearing nut 4...bearing washer
5...drive gear 6...rotational shaft
7...Rotating plate 9...Axis for angle adjustment
10 ... unit bearing 11 ... drive motor
13... gear for angle adjustment 14... power gear for angle adjustment
15 ... reduction gear 16 ... gear for encoder
53 ... jig frame 54 ... position body
55 ... upper jig 56 ... lower jig
60 ... anti-loosening nut 70 ... welded object
80... welding torch 100... positioning device

Claims (3)

A casing through which a shaft hole is formed so that a rotating shaft can be inserted therein;
A hollow part is formed in the longitudinal direction inside and inserted into the shaft hole of the casing, a threaded part is formed at one end and a flange part is formed at the other end, and a nut and a bearing are formed on the rotary shaft between the casing and one end where the screw part of the rotating shaft is formed. A rotating shaft coupled in order from the outside to the inside of the screw portion, a bearing and a drive gear coupled to the rotation shaft between the casing and the flange portion, and an external drive motor connected to the drive gear to receive rotational force; and
And a rotating plate coupled to the flange portion to rotate together with the rotating shaft,
Position fixing device for welding, which has a predetermined length and is inserted through the hollow of the rotating shaft, and further comprises a jig having a threaded portion formed at one end and a jig portion formed at the other end to support and fix the object to be welded. According to claim 1,
The jig has a hollow part penetrating the inside of the jig in the longitudinal direction, supports and fixes another jig part positioned opposite to the jig, and is configured to be connected to the casing and rotated together with the casing when the inclination angle of the casing changes. Positioning device for welding further comprising a frame. Claims 1 and 2 of any one of the rotary welding device comprising a position fixing device for welding.

Images