JPS6257776A - Rotary type automatic welding equipment - Google Patents

Abstract

PURPOSE:To make welding works more stable and efficient, by fixing a chucking means to a main spindle and, at the same time, providing a freely rotatable cylinder main body around the main spindle, and then, revolving a torch around an object to be welded fixed by means of the chuck. CONSTITUTION:A chucking means 3 is provided at the upper end of a main spindle 2 stood on a base board 1 and a cylinder main body 4 is provided around the main spindle 2 by means of a ball bearing under a freely rotatable condition. At the back of the cylinder main body 4, a welding wire 42 is pivotally supported by means of an arm 40 and fed to a torch pipe line 43 at a fixed rate. By using this mechanism, the wire 42 is fed by rotating the cylinder main body 4 at a rotating speed set in accordance with the diameter of a flange 45. Therefore, the front end of a torch 18 can make precise and stable welding, and thus, welding works can be made more stable and efficient.

Description

[Detailed description of the invention] The non-invention relates to a rotary automatic welding device.

Conventionally, flange welding of curved pipes and the like has been carried out exclusively by holding a torch by hand, but this results in uneven welding and poor work efficiency due to the inconsistent working posture. To improve this, it has been proposed to use a mechanical gripping device to fix the gripped item, but this requires a large amount of space as the gripped item itself rotates, and is unstable and dangerous. There are some problems.

The present invention aims to solve the above problems,
That is, according to the present invention, the article itself is fixed at a fixed height position via a chuck means, and the torch itself is made to rotate around this, so that the article is fixed at a fixed position. For example, if the length of the curved pipe is 5 m,
Even if the length is 10 m, there is no need to prepare a large area, the device itself can be made compact, and it is extremely efficient in terms of work efficiency.

Hereinafter, the F1 invention will be explained based on the drawings.

Figure 1 is a front perspective view of the entire device, and Figure 2 is the I--
3 is a sectional view taken along the n-+ line, FIG. 4 is a sectional view taken along the ■-■ line, FIG. 5 is a partially exploded perspective view of the chuck means, and FIG. It is a sectional view taken along the line X-X.

In the drawings, reference numeral 1 denotes a base plate, and 2 a main shaft erected on the base plate, with a chuck means 3 horizontally attached to the upper end.

4 is a ball bearing (not shown) attached to the outer periphery of the main shaft 2.
It is a cylindrical main body which is rotatably arranged through a cylindrical body, and a holding plate 6 serving as a stand for a torch support means 5 for holding the torch at a constant height is provided in the upper half of the front part. Two guide rails/L/7a and 7b are installed in the horizontal direction of the holding plate 6 in a length range, and are slidably moved by fitting with these guide rails 7a and 7b. A sliding plate 8 is provided for this purpose.

Therefore, a horizontal bar 9 is attached to the upper part of the sliding plate 8 and further protrudes in parallel thereto, and the lower surface of the protruding portion is formed into a rack tooth S. A master bracket 10 having an inverted U-shaped cross section and having a gear K meshing with the rack iS on the lower surface thereof is provided over the main bracket 10 (see FIG. 2).
By rotating the gear K by the appropriate F rotation, the arrow (A)
It is designed to move in the left and right direction of (b). Note that 12 is a knob for fixing it to any desired position.

On the other hand, a child bracket 13 having an opening-shaped cross section is fixed to one end edge of the parent bracket 10 in a perpendicular manner.
(See Fig. 3) and a vertical bar 14 having rack teeth S on one side thereof is vertically fitted into the mouth-shaped interior, and the child bracket (13) is provided with a gear that meshes with the rack teeth S°. By attaching a knob 15 equipped with a knob 15 and appropriately rotating the teeth by rotating the knob 15, it is possible to move vertically in the direction of arrow C4). Note that 16 is a knob that allows the device to be fixed at any moved position. A holder 17 is attached to the upper end of the vertical beam 14, and a torch 18 is held via the holder 17.

Reference numeral 19 is a link for limiting the sliding range of the sliding plate 7, and the r end is connected to an L-shaped bracket 20 fixed to the center of the cylinder body 4 (rotating via a pin 21). A slit 22 is formed in the upper end over a certain length range, and the slit 22 and a roller 23 fixed to the sliding plate 8 are slidably engaged with each other. The limit position at which the sliding plate 8 moves laterally is automatically fixed by the command action of the V7C7-fling.Specifically, when the link 19 swings in the arrow (E) (E) direction, Contrary to this rocking, the cam plate 25 is
(g) By making it swing in one direction, and at this time, by forcing the spring 28 between the locking pins 26 and 27 provided on the back side of the cam plate 25 and the back side of the link 19. It will be done. (See Fig. 4) Reference numeral 29 denotes a K-shaped roller so that the cam plate swings smoothly on the upper edge of the bracket.

A pulley 30 is fixedly installed near the center of the cylinder body 4 to rotate the cylinder body 4, and is connected to a motor 31 separately provided on the base plate 1 via a belt 32.

On the other hand, the rotation of the pulley 30 causes the encoder 34 to rotate via a single belt 33, which is inputted to a separate operation panel 36 so that the drive of the motor 31 is stopped at a constant rotation. It has become.

Reference numeral 37 denotes a slip ring means disposed in the lower part of the cylinder body 4, and the cylinder frame 38 rotates integrally with the pulley 30.
In contrast, in the illustrated example, a slip ring 37a for receiving welding current and a slip ring 37 for C○2 gas inflow are inserted from above.
b1 Welding wire feed motor current receiving slip ring 37C. In addition, 39a, 39b, 39Q
is a cable that is introduced from the outside to the fixed side of the main shaft l.

On the other hand, an arm 40 is fixed to the rear part of the cylinder body 4 so as to project horizontally, and a welding wire 42 wound around a pobbin 4 is pivotally supported at the tip of the arm 40, and a motor (not shown) and It is designed to be quantitatively delivered to the torch conduit 43 by driving the delivery roller.

On the other hand, as shown in FIGS. 5 and 6, the chuck means 3 rotates the spiral screw plate 3C housed inside the base board 3b clockwise or counterclockwise by rotating the hand/I/3a clockwise or counterclockwise. The gripping claw 3d is rotated clockwise, and the gripping claw 3d is accordingly moved forward and backward (Z). Specifically, slits 3e are formed at three locations in the radial direction of the pace board 3b. A male screw is integrally fixed to the bottom surface of the gripping claw 3CL using a set screw m-' to the screw groove of the spiral screw plate 3c exposed to the surface side at each slit position. This is done by engaging the members 3g. In addition, in the drawing, 3f is a retaining ring for holding the spiral screw plate 3c at a constant height position on the axis side of the base plate 3b, and 3b is a hand 1v8a, which engages with the spiral screw plate 3C with a certain play relationship. It is a retaining pin.

Next, to explain the operation, first move the sliding plate 8 in the direction of the arrow (A) so that the torch 18 is removed from the upper position of the chuck means 3, and then rotate the hand v3a counterclockwise. The gripping claws 3C are moved on the base board 3b, and the flange portion 45 of the curved pipe 44 temporarily attached to the center of the chuck is placed, and the handle 3a is rotated clockwise to move the gripping claws 3C between each claw. Tighten and fix.

Then, move the sliding plate 8 in the direction of the arrow (B) and rotate the knob 12.15 appropriately so that the tip of the torch 18 is located at the welding point on the upper surface of the flange 45 to move it in the horizontal or vertical direction. I will make it happen.

In the device of the present invention, the cylinder body 4 is rotated based on a preset rotational speed according to the size and diameter of the flange 45, and the welding wire 42 is sent out. This can be achieved by selecting the scale appropriately.

The above is a manual scale setting, but the hand/L'3
At the tightening position of the gripping claw 3c by rotation a, the on/off button stored inside the pace board 3b is pressed, and the command current generated by this button automatically performs welding teaching corresponding to various flange members via the controller. This can be done as described in the Japanese Patent Publication No. 1983-1995, which the present inventor previously filed.
The technology shown in No. 20427 is adopted.

The invention has the above-mentioned configuration, and when the start button on the operation panel 36 is pressed, the cylinder body 4 rotates at a required constant speed, and the welding wire 42 is also fed out at the required feed speed, so that automatic welding work can be performed. It becomes something that is done.

According to the inventive device, the workpiece to be welded is fixed at the center and does not move or vibrate, so stable welding work is performed, and spatter is less likely to occur, resulting in a beautiful welded surface. Also, even if the curved pipe is long (if it is long, the other end of the curved pipe can be hung on a stand or a crane), no extra space is required to reach the initially set position. This allows for quick, safe and efficient welding work.

[Brief explanation of drawings]

Figure 1 is a front perspective view of the entire device, and Figure 2 is the I--
3 is a sectional view taken along the I line, Figure 3 is a sectional view taken along the same ■-■ line, and Figure 4 is a sectional view taken along the same ■
5 is a partially exploded perspective view of the chuck means, and FIG. 6 is a sectional view taken along line X-X in FIG. 5.

Claims (1)

[Claims] (1) The chuck means is fixed in a horizontal state at a constant height position of the main shaft erected on the base plate, and the cylinder body is rotatably held on the outer periphery of the main shaft below the chuck means, and the upper part of the cylinder body A torch support means and a welding wire feeding means for the torch support means are provided, and a pulley and a slip ring means are provided at the center and lower part of the cylinder body, and the torch is mounted around the workpiece fixed by the chuck means. A rotary automatic welding device characterized in that automatic welding is performed while rotating the device.