JPS6032936Y2 - Flux receiving belt pressure adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure adjustment device for a flux receiver belt in a horizontal submerged arc automatic welding device, and particularly relates to a pressure adjustment mechanism in the device.

When horizontal welding is performed by submerged arc welding, a flux receiver member is required to support the sprinkled flux.

Although the flux receiver is sometimes fixed to the base metal, it is troublesome to remove it, so it is desirable to have a flux receiver that moves as welding progresses.

Conventionally, as a member of such a movable flux receiver, a belt is used for a rotary flux receiver.

A heat-resistant cloth belt or a somewhat flexible rubber belt is used as the belt (see Figure 1), and the mechanism for supporting and rotating these belts is a traveling carriage together with a welding torch, etc. Fixed.

For this purpose, the shape of the object to be welded (for example, the inside or outside of a tank)
This method has a disadvantage in that it has poor adhesion and followability against distortion, distortion, or variations in groove shape, and flux leaks and falls during welding, causing problems in welding.

The present invention was developed with the aim of eliminating such conventional drawbacks, and the gist of the configuration of the present invention is that the torch is installed at the bottom of a traveling carriage carrying a horizontal submerged arc welding device, and In a pressure adjustment device that presses the belt against the workpiece, the flux receiver, which is stretched between two pulleys placed at positions sandwiching the torch, has two guide rods attached to a support member that pivotally supports the pulleys. a sliding block capable of sliding along the guide rod is fixedly installed, and a fill spring is interposed between the sliding block and a moving block configured to forcibly reciprocate while being guided by the guide rod, Furthermore, a guide roller which is located approximately in the middle of the two pulleys and abuts on the inside of the belt is biased toward the pressing side of the support member.

The present invention will be explained below based on drawings that are examples of the invention, but the drawings only show one representative side, and the design may be partially changed, or the shape or parts may be changed for the purpose stated above and below. Anything that is included in the technical scope of the present invention.

Figure 1 shows a cross section of the main parts showing the welding state in horizontal submerged arc welding, where 1 and 2 are the objects to be welded, 3 is the welding torch, 4 is the welding wire, and 5 is the rubber-like shape for receiving and stopping the flux 6. It's a belt.

2 is a plan view of a flux receiver and belt pressure adjustment device (hereinafter simply referred to as 1 device) 40 according to the present invention, FIG. 3 is a partially cutaway front view thereof, and FIG. A broken side view is shown, respectively.

In the following description, FIGS. 5 to 7 showing enlarged partial cross-sectional views of FIGS. 2 to 4 will be referred to as necessary.

In FIGS. 3 and 4, an elevating handle mounting base 9 is fixed to the lower end frame 8 of the traveling carriage, and a mount 10 is further provided on the upper surface of the mounting base 9. As shown in FIGS.

The handle mounting base 9 is provided with a bearing 12 , and a shaft rod 14 formed integrally with the lifting handle 13 fits into the bearing 12 , and further penetrates the side wall of the mounting base 9 to penetrate inside the mounting base 9 . stand out.

A bevel gear 15 is attached to the tip of the shaft rod 14.

A bearing 16 is provided penetrating through the center of the bottom of the pedestal 10, and guide rods 17, 17 are vertically attached to both ends of the pedestal 10, respectively.

A threaded rod 18 is fitted into the bearing 16, and the top surface of the threaded rod 18 extends close to the top surface of the pedestal 10.

On the other hand, the lower end of the threaded rod 18 penetrates the upper wall of the mounting base 9 and protrudes into the interior of the base 9. Furthermore, a bevel gear 15' is attached to the lower end of the threaded rod 18, and the lifting handle 1
It meshes with a bevel gear 15 provided at the tip of the shaft rod of No. 3.

On the other hand, on the upper surface of the elevating slider 19, which is formed by holding through-hole portions 19a, 19a at both ends and holding a threaded bearing portion 19b at the center, there are projecting rods 2G, 20 at positions sandwiching the bearing portion 19b. It is erected.

The bearing portion 19b of the elevating slider 19 is connected to the threaded rod 1.
8, and the penetrating portions 19a, 19a are screwed together with the frame 10.
The protruding rods 20, 20 are inserted into and engaged with two guide rods 17.degree.

That is, by rotating the handle 13, the shaft rod 14, bevel gears 15, 15', and threaded rod 18 are rotated, and the elevating slider 19 and the protruding rod 20 are further rotated via the threaded bearing portion 19b.
A mechanism for raising and lowering the pressure adjustment mechanism freely by raising and lowering the pressure adjustment mechanism is constructed here.

Furthermore, a pedestal 21 that moves forward and backward in a direction perpendicular to the welding line is placed in contact with the upper ends of the thrust rods 20, 20, and the pedestal 21 has two sides on the workpiece 2 side (hereinafter referred to as 1 front side) and the opposite side thereof. (
As shown in FIG. 5 (an enlarged sectional view of the main part of the V section in FIG. 4), the brackets 22 and 22 are respectively provided on the rear side (hereinafter referred to as 1 rear side), and have a handle 23 for advancing and retracting at the rear end. A threaded rod 24 is pivotally supported at the center of each of the brackets 22, 22, and guide rods 25, 25 are provided at the same height as the center height of the threaded rod 24 and equidistantly sandwiching the threaded rod 24. (See Figures 2 and 3).

The threaded rod 24 and both guide rods 25 and 25 have a threaded hole 26a in the center and through holes 2 at both ends.
Moving block 2 formed to have 6b and 26b
6 are provided so as to be threaded and slidably engaged with the threaded rod 24 and both guide rods 25, 25, respectively.

Similarly, there is a stepped through hole 27a in the center, and through holes 27b at both ends.

27b (see FIG. 6, which shows an enlarged cross-section of the sliding block 27 taken along the line VI-Vl in FIG. 3), the sliding block 27 is formed to have a threaded rod 24 and both guide rods 25, 25. Furthermore, a spring 28 is wound around the threaded rod 24 between the moving block 26 and the sliding block 27, and the moving block 26 and the sliding block 27 are engaged with the connecting plate 30 by the pins 29 and 29. Furthermore, the pin hole on the front side of the connecting plate 30 is formed as a long hole in the advance/retreat direction, and forms a so-called play part 30a.

Further, the upper surface of the sliding block 27 is fixed to the lower surface of the support member 31.

Furthermore, the rear end of the support member 31 and the upper end of the rear bracket 22 are connected by a leaf spring 42, and the front bottom surface of the support member 31 is slidably abutted on the top surface of the front bracket 22.

Furthermore, two fixed pulleys 32 are pivotally supported at both ends of the support member 31 at positions equidistant from the center of the handle 23, and a screw type adjustment mechanism 81a is screwed onto one end of the support member 31. Accordingly, the distance between the axes of both pulleys 32 can be freely adjusted.

The belt 5 is wrapped around both pulleys 32, 32, and a guide bearing 33, 33 is provided in the center of the support member 31 to support the belt 5 and to smooth the rotation of the belt 5. It is attached so as to come into contact with the lower surface of the belt 5.

Further, as shown in FIGS. 2 and 7 (cross-sectional view of the main part taken along the line ■-■ in FIG. The hole 34a is installed so that its vertical center coincides with the center of the threaded rod 24, and its horizontal center coincides with the center line of the belt 5 in the height direction.

Further, a piston shaft 35 is inserted through the through hole 34a, and a roller holding member 36 is attached to the front end of the piston shaft 35, and the two guide rollers 37 and 37 are respectively attached to the belt by the holding member 36. It is pivotally supported in contact with the inside of 5.

Also, the bracket 34 and the holding member 36 of the piston shaft 35
A spring 38 is wound between the guide roller 3 and the guide roller 3.
7.37 is biased and pressed forward.

That is, by rotating the handle 23, the threaded rod 24,
Not only does the entire belt 5 move forward and backward through the moving block 26, the sliding block 27, the support member 31, and the boots IJ-32, 32, but a constant pressing force is maintained, and the belt 5
A pressure adjustment mechanism is constructed here that can freely adjust the degree of pressure applied to the front central portion of the front side.

Now, as shown in FIG. 8, the belt adjusting device configured as described above is installed at the lower part of the torch 3 of the traveling carriage 60 on which the welding device is mounted, and then is attached to both front end faces at the lower part of the traveling carriage 60. By adjusting the attached guide rollers (not shown), the main body of the apparatus is set at an appropriate welding position with respect to the workpiece 2 to be welded.

Next, turn the lifting handle 13 to move the belt 5 to the workpiece 2.
Bring it close to just in front of.

Subsequently, the forward/backward handle 23 is turned to bring the belt 5 into contact with the workpiece 2 to be welded.

In this case, even if the belt 5 comes into contact with the workpiece 2 to be welded, if the handle 23 is continued to be turned, as shown in FIGS. 4 and 5, the sliding The block 27 moves backward along the guide rods 25, 25 (see FIG. 6), and the pin 29 hits the rear inner surface of the play portion 30a, stopping the movement of the block 27 from moving backward.

At this point, the rotation of the handle 23 also stops.

In this way, of the contact portion of the belt 5 with the workpiece 2, a constant pressing force is guaranteed by the spring pressure with a margin corresponding to the distance between the axes.

Furthermore, as described above, two guide rollers 37, 37 are inscribed in the center of the belt 5 and are urged forward by the spring 38, so that when the surface to be welded is concave, The guide rollers 37.37 move forward, forming the belt 5 in a concave shape so that it easily and reliably follows the concave surface to be welded.

Incidentally, when the surface to be welded is convex, the guide rollers 37, 37 move backward to effect a similar follow-up operation.

However, as described above, due to the constant belt pressing force loading action and the belt shape following action acting simultaneously, the belt 5
The contact portion is maintained at approximately the distance between the axes and is always pressed against the surface to be welded, so there is no flux falling out.

Since the present invention is constructed as outlined above, the flux receiver has extremely good belt adhesion and followability even when the shape of the surface to be welded (for example, the inside or outside of a tank, etc.), distortion, and groove shape change. Therefore, flux will not spill from the belt during welding, ensuring good welding and improving economic efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partial sectional view showing a welded state, Fig. 2 is a partially cutaway plan view of the belt adjustment device, Fig. 3 is a partially cutaway front view thereof, and Fig. 4 The figure is a partially cutaway side view, FIG. 5 is an enlarged cross-sectional view of the v section of FIG. 4, and FIG.
, FIG. 7 is a cross-sectional view of a main part taken along the line ■--■ in FIG. 2, and FIG. 8 is a schematic perspective view of the device of the present invention suspended from a traveling carriage. 1.2...Object to be welded, 5...Rubber belt, 13...Elevating handle, 15.15'
...Bevel gear, 17, 17, 25.25...
...Guide rod, 18.24 ...Threaded rod, 19
...Elevating slider, 23... Handle for advancing and retreating, 26... Moving block, 27...
...Sliding block, 28, 28... Spring, 29, 29... Zen, 30... Connecting plate, 30a... Play part, 31. ...Support member, 32, 32...Pulley, 34...
... Bracket, 35 ... Piston shaft, 37.
37---Guide roller, 42...Plate spring.

Claims (1)

[Scope of utility model registration request] The flux receiver, which is installed at the bottom of the torch of the traveling carriage that carries the horizontal submerged arc welding device and is placed between two pulleys that sandwich the torch, is a pressure adjustment device that presses the belt against the workpiece. A sliding block capable of sliding along two fixed guide rods is fixed to a support member that pivotally supports the pulley, and the sliding block is configured to forcibly reciprocate while being guided by the guide rods. A coil spring is interposed between the movable block and the sliding block configured as shown in FIG. The flux receiver is equipped with a belt pressure adjustment device.