JPH0211988Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting angle adjustment mechanism for a welding or fusing torch.

Conventionally, adjustment of the advancing angle or receding angle of the torch with respect to the welding line was performed by providing individual adjustment mechanisms and adjusting the mechanisms, but with this method, the number of adjustment mechanisms increases and the overall It has the disadvantage of being large and heavy. The present invention aims to improve these points and provide a torch angle adjustment mechanism that can set and fix the torch angle (inclination angle with respect to the welding surface) and forward/backward advance angle with a single mechanism. Next, this will be explained with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which numeral 10 denotes a torch holder, as shown in the figure, a pentagonal annular body 12, a short round rod-shaped shaft 14 and a nut 16 fixed to it, and a screw hole in the nut portion. Screw into the annular body 1
2 and a screw 18 projecting into it. Reference numeral 20 denotes a torch, and the torch 20 can be fixed to or removed from the holder 10 by holding the butterfly wing portion at the tip of the screw 18 and turning it to screw it in or unscrew it. Reference numeral 22 denotes a torch angle adjustment fitting, which has a box shape with an opening at the bottom and has a hole through which the shaft 14 and the like pass. 24 is a tightening metal fitting, and the cylindrical part 24
a and a bolt portion 24b, the cylindrical portion fits inside the adjustment fitting 22, and the bolt portion penetrates and protrudes through a hole on the top surface of the adjustment fitting. 26 is a base member fixed to a welding cart or the like, 28 is a collar, and 30 is a spring washer. The bolt portion 24b of the fastening fitting passes through these in sequence, and a thumbscrew 32 is screwed into the tip.

Since the torch angle adjustment mechanism is configured as described above, the torch angle can be changed in various ways with a simple operation. That is, when each member is assembled as shown in FIG.
is pressed against the upper peripheral surface of the side wall opening of the adjustment fitting 22 to make the shaft 14 non-rotatable, and at the same time, the torch holder 10, the adjustment fitting 22, the collar 28, etc. are fixed to the base member 26. When the butterfly screw 32 is loosened, this fixation is released, so that the adjustment fitting 22 rotates relative to the fixed base member 26 about the bolt portion 24b as shown by arrow _F1 . Further, the torch holder 10 rotates relative to the adjustment fitting 22 about the shaft 14 as shown by arrow _F2 .

Thus, the torch holder 10 can freely rotate about two axes that differ by 90 degrees, and the position of the torch 20 relative to the holder 10 can be freely moved back and forth and rotated by operating the screw 18. This forward and backward movement is
Change the wire protrusion length.

The cylindrical portion 24a of the fastening fitting 24 has a notch 24c as shown in FIG. 2b. In this way, when the thumbscrew 32 is tightened to lift the shaft 14 and press it against the opening top surface of the adjustment fitting 22, both edges 24d of the notch strongly press against the shaft 14 and prevent the shaft from rotating. Without this notch, the shaft 14 and the cylindrical part 2
The contact with 4a is only at one tangential part since they are circles, and there is a risk of sliding, which prevents rotation and makes the angle setting unstable. Note that since the purpose of the notch is to make contact between the cylindrical portion 24a and the shaft 14 at a plurality of locations, there is no notch, and the outer peripheral portion may be connected to form a recess as shown by the dotted line.

FIG. 3 shows an example of application of the adjustment mechanism of the present invention. 40
is a welding cart, which includes a guide wheel 42 for the welding line 50 and a base member 26 in the direction orthogonal to the welding line.
The position adjustment unit 44 for moving forward and backward, its knob 4
6. Control unit 4 for welding power source, trolley traveling mechanism, etc.
8. Arrow F ₃ indicates the welding direction. As described above, by loosening the wing screw 32 and rotating the torch holder 10 around the bolt portion 24b of the fastening fitting, the advancing angle θ ₁ and the receding angle θ ₂ of the torch 20 can be changed as desired. The dashed line shows the torch rotated to have a swept angle. Running surface 52 of trolley 40
The inclination angle of the torch 20 relative to the holder 10 can be changed arbitrarily by rotating the holder 10 about the shaft 14. This state is shown in FIG. By rotating about the shaft 14, the torch 20 is erected from the solid line state to the chain line state, and the torch angle with respect to the running surface (one base material for fillet welding) 52 can be changed from θ ₃ to θ ₄ .
In FIG. 4, the torch position is also adjusted by the position adjustment section 44, as shown by the chain line.

As explained above, according to the present invention, butterfly nuts 3
By simply turning 2, the torch angle with respect to the horizontal plane and the torch advancing and receding angles with respect to the welding line can be arbitrarily changed and fixed in the changed state. Therefore, the operation is easy, and the adjustment mechanism can be made simple, compact, and lightweight. Note that the torch 20 may be used not only for welding but also for fusing.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, with a portion showing a cross section. 2a and 2b are a side view and a front view of the fastening fitting, and FIGS. 3 and 4 are a plan view and an end view showing an example of application of the present invention. In the drawing, 10 is a torch holder, 14 is its shaft,
22 is an angle adjustment fitting, 24 is a tightening fitting, 24a is a cylindrical part thereof, 24b is a bolt part, 32 is a nut,
26 is a fixed base member.

Claims (1)

[Claims for Utility Model Registration] (1) A torch holder equipped with a protruding round rod-shaped shaft, a hollow angle adjustment fitting into which the shaft of the torch holder is inserted, and a tightening fitting consisting of a bolt part and a cylindrical part; The cylindrical part of the tightening fitting is fitted into the hollow part of the angle adjusting fitting and is penetrated by the shaft of the torch holder together with the angle adjusting fitting. 1. A torch angle adjustment mechanism, characterized in that the nut passes through an angle adjustment fitting and a fixed base member, and the nut is screwed into the protruding end thereof. (2) The torch angle adjustment mechanism according to claim 1, wherein the cylindrical part of the fastening fitting is provided with a notch or a recess on the side opposite to the side where the bolt part is located. .