JPS6076279A - Automatic fillet welding machine - Google Patents

Abstract

PURPOSE:To provide a titled fillet welding machine which performs automatically fillet welding with less drop-out and with high reliability by providing a recess to a welding carriage to expand the range for adjusting the position of a torch and to reduce the size over the entire part and stopping automatically the device when the carriage travel deviates or the contact of the carriage with a corner part is detected. CONSTITUTION:A recess 8 is provided to a carriage 3 supported by four wheels 1 to expand the range for adjusting the position of the top end of a welding torch 7 and to reduce the size over the entire part. Deviation of the carriage 3 from a weld zone 15 is obviated with respect to the advancing direction by adjusting the projection of guide rollers 6 provided to the carriage 3. In case the carriage deviates from the weld zone, such deviation is detected with a detector 9. If the carriage 3 contacts with a corner part, such contact is detected with a limit switch 10. The travel and welding are then automatically stopped. The drop-out of welding in the corner part is decreased and the carriage is automatically stopped when the carriage travels abnormally, by which the reliability of welding is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fillet welding machine for welding vertical plates.

(Prior art) When there are several horizontal fillet welds on a ship, etc.
In order to improve welding efficiency and stabilize quality, welding was performed using several simple automatic welding machines per person.

Conventionally, small and simple automatic welding machines used in such cases have been configured to perform welding by clamping a welding torch at a position behind the cart with respect to the direction of welding progress.

In this case, at the welding stop point, there will be a welding residue equal to the length of the cart and the length of the welding torch clamp, and if there are many welding points on the standing plate, the total amount of welding residue will increase. Ta.

In addition, with conventional small simple automatic welding machines, the amount of movement gJI "Jl in the vertical direction or front and back direction on the welding torch is small,
Increasing the amount of adjustable movement increases the size of the truck, which also has the disadvantage of impairing workability.

Furthermore, there was a problem in that even if the welding machine detached from the standing plate for some reason, welding continued.

(Objective of the Invention) Therefore, the present invention improves the above-mentioned drawbacks of the conventional automatic welding machine, is small and lightweight, and is easy to handle, and also increases the adjustable range of the welding torch without increasing the size of the device. To provide an automatic fillet welding machine which reduces welding residue as much as possible and is equipped with a mechanism to stop welding and traveling of a truck at a welding stop point when detached from a standing plate being followed.

(Structure of the Invention) The automatic fillet welding machine according to the present invention has welding parts 1 and 2 adjustable in a recess provided on the vertical plate side of the truck, and a contact type vertical plate on the surface of the truck facing the vertical plate. It is characterized by the provision of a tracing separation detector and a contact-type automatic stop limit switch on the surface in the direction of carriage movement.

(Example) The present invention will be explained below using the illustrated example. Figure 1,
FIGS. 2 and 3 are partially cutaway sectional views of an embodiment of an automatic fillet welding machine according to the present invention.

A plan view and a rear view are shown.

This automatic fillet welding machine is equipped with a truck 3 having four wheels 1, and these wheels 1 are driven by a motor 13 provided on the truck 3, making the truck movable. A front arm 5 and a rear arm 4 are attached to the front and rear ends of the truck 3 on the side of the upright plate 15, respectively, so that their protrusion lengths from the truck 3 can be adjusted. Furthermore, guide rollers 6 are provided at the tips of these front and rear arms 4.5 and guide the movement of the truck 3 by rolling into contact with the standing plate 15. front, 1
! As mentioned above, the protruding length of the arm 4.5 is adjustable, and the protruding length of the front and rear arms 4, 5 can be adjusted depending on the welding conditions and the welding location to adjust the position of the carriage 3 relative to the standing plate 15. can be adjusted.

A contact-type standing plate copying and disengaging detector 9 is attached to the tip of the rear arm, and as will be explained in detail later, the beam at the tip of the detector comes into contact with the standing plate 15 and is pushed in, stopping welding and bogie travel. let

In addition, a welding torch 7 is arranged in a recess 8 provided on the vertical plate side of the cart 3, and a welding torch 7 is connected to a soil leveling slider 11 and a longitudinal adjustment slider 12 provided on the cart 3 via a support member 16. Supported. The vertical adjustment slider 11 adjusts the vertical position of the welding torch 7, and the longitudinal adjustment slider 12 adjusts the longitudinal position of the welding torch 7, so that the welding torch 7 can be positioned optimally for welding work.

Furthermore, an automatic stop limit switch 10 is provided on the side surface of the bogie 3 in the direction of travel, and if it comes into contact with a plate in front at a corner, etc., the automatic stop limit switch 10 is activated, stopping welding and the bogie running at the same time. let

In this automatic fillet welding machine, the motor 13 is controlled by a control box (not shown) installed on the trolley 3, and the trolley running 0N10FF, welding ○N/○FF, and speed adjustment 1 inch mechanism can be operated. It is configured.

(Function) When using the above configuration, the protruding lengths of the front arm 5 and rear arm 4 are adjusted, and the two guide rollers 6.
6 on the standing board 13 and cent.

Then, press the inching button on the control box to take out the welding wire, and move it forward so that the tip of the wire is aimed at the welding line.
& Adjust the adjustment slang 12 and the vertical adjustment slider 11 to move the torch.

When the welding torch 7 hits a narrow horizontal fillet welding, the aiming angle of the torch and the top and bottom.

By adjusting the amount of back and forth sliding and centering, it is possible to place a good weld bead even in narrow joints.

To start welding, arc start and dolly running are performed at the same time with just one simple operation. To finish welding, operate the stop button on the control box, or the automatic welding machine will move and stop automatically as shown in Figs. When it comes into contact with the welding and bogie running will stop at the same time.

In addition, as shown in FIGS. 6 and 7, when the automatic welding machine separates from the vertical plate 15 due to the welding cable being pulled for some reason, the rear guide roller 6 acts as a fulcrum to copy the vertical plate. The rond of the detachment detector is pushed in by the standing plate 15.

As a result, it is possible to prevent unnecessary welding of a bead that has come off the joint line due to a stop in welding and the running of the trolley.

In this embodiment, an independent standing plate tracing detachment detector 9 is connected to the ground at the tip of the rear arm 4, but when the cart 3 is detached from the standing plate 15, the guide roller 6 also comes off from the standing plate Fj, 15, so the guide It is also possible to adopt a configuration in which the contact state of the rollers 6 is detected and the welding and carriage traveling are automatically stopped.

(Effects of the Invention) The embodiment of automatic fillet welding according to the present invention is as described above, and can provide the following effects.

■ The distance between the guide roller and the welding torch clamped in the center is short, leaving approximately the same amount of welding residue at the welding start and end points, and overall less welding residue than conventional machines.

■ A concave part is formed in the dolly to increase the movable range of the welding torch clamped within the concave part, and the adjustment range of the aiming angle is also expanded, so there is no need to increase the dolly size (it is lightweight and compact). It is now possible to weld narrow fillet welds while holding the weld.

■ In addition, it has a function that stops welding and traveling when the cart detaches from the standing plate it was following or at the welding stop point, so the worker does not have to worry about producing a defective bead, and it is possible to automate the work and weld. It is effective in stabilizing the variety.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway cross-sectional view taken at the center, Fig. 2 is a plan view, Fig. 3 is a rear view, Figs. 4 and 5 are schematic diagrams showing the automatic stop operation, Fig. 6 and FIG. 7 is a schematic diagram showing a detachment detection state. 1. Wheel, 2. Axis, 3. Dolly, 4. Rear arm, 5. Front arm, 6. Guide roller, 7. Welding torch, 8. Recessed part, 9. Vertical plate copying. Disengagement detector, 10...Limiting switch for automatic stop, 11...Slider for vertical adjustment, 12...Slide for front/rear adjustment, 13...Motor, 14...Control hook, 15...1 stand. 6L'19! -'r3 deceased,'a;・ Figure 4 Figure 5 Figure 7 Procedural Sleeve Book Showa Party December 2g, 1981 Patent Application No. 183585 宕2, Title of Invention Automatic fillet welding machine 3 Amendment. Relationship with the case of the person who made the amendment Patent applicant 43 detailed explanation 〒107 6 Number of inventions increased by amendment 7 Target of amendment 1: The entire text of the specification is corrected as shown in the attached sheet. Description 1, Name of the invention Automatic fillet welding machine 2, Claims A cart movable along a standing plate and having a concave portion on the side of the standing plate; On the other hand, a welding torch is supported in a vertically and longitudinally adjustable manner, a standing plate cold separation detector is provided on the vertical plate side of the truck, and an automatic stop detector is provided on the side surface of the truck. An automatic fillet welding machine characterized by being equipped with a device. 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a fillet welding machine for welding vertical plates. (Prior art) When there are several horizontal fillet welds on a ship, etc.
In order to improve welding efficiency and stabilize quality, one person carried out welding using several simple automatic welding machines. Conventionally, small and simple automatic welding machines used in such cases have been configured to perform welding by clamping a welding torch at a position behind the cart with respect to the welding progress direction. In this case, at the welding stop point, there will be a welding residue equal to the length of the truck multiplied by the length of the welding torch clamp section, and if there are many welding points on the standing plate, the total amount of welding residue will increase. Ta. In addition, in conventional small and simple automatic welding machines, there is a small amount of movement adjustment in the vertical direction or front and back direction on the welding torch, and if this movement adjustment amount is increased, the cart becomes larger and work efficiency deteriorates. Furthermore, there was a problem in that if the welding machine detached from the standing plate for some reason, welding would continue for an additional period of time. (Objective of the Invention) Therefore, the present invention improves the above-mentioned drawbacks of the conventional automatic welding machine, is small and lightweight, and is easy to handle, and also increases the adjustable range of the welding torch without increasing the size of the device. To provide an automatic fillet welding machine which reduces welding residue as much as possible and is equipped with a mechanism to stop welding and traveling of a truck at a welding stop point when detached from a standing plate being followed. (Structure of the Invention) The automatic fillet welding machine according to the present invention has a welding torch adjustable in a recess provided on the vertical plate side of the truck, and a contact-type vertical plate copying/separation detection device on the surface of the truck facing the vertical plate. It is characterized by the fact that it is equipped with a contact-type automatic stop limit switch on the surface of the trolley in the direction in which it moves. (Example) The present invention will be explained below using the illustrated example. FIG. 1, FIG. 2, and FIG. 3 show a partially cutaway sectional view, a top view, and a rear view of an embodiment of an automatic fillet welding machine according to the present invention. This automatic fillet welding machine is equipped with a truck 3 having four wheels 1, and these wheels 1 are driven by a motor 13 provided on the truck 3, allowing the truck to move freely. A front arm 5 and a rear arm 4 are attached to the front and rear ends of the truck 3 on the side of the upright plate 15, respectively, so that their protrusion lengths from the truck 3 can be adjusted. Furthermore, guide rollers 6 are provided at the tips of these front and rear arms 4 and 5, and guide the movement of the truck 3 by rolling into contact with the standing plate 15. front,
As mentioned above, the protrusion length of the rear arms 4 and 5 is adjustable, and the protrusion length of the front and rear arms 4 and 5 can be adjusted depending on the welding conditions and welding locations, etc.
The position can be adjusted. A contact-type standing plate copying/separation detector 9 is attached to the tip of the rear arm, and as will be explained in detail later, the beam at the tip of the detector is still in contact with the standing plate 15 and is pushed in, stopping welding and bogie travel. let Further, a welding torch 7 is disposed in a recess 8 provided on the vertical plate side of the truck 3, and is supported via a support member 16 by a vertical adjustment slider 12 and a longitudinal adjustment slider 11 provided on the truck 3. ing. The vertical adjustment slider 12 adjusts the vertical position of the welding torch 7, and the longitudinal adjustment slider 11 adjusts the longitudinal position of the welding torch 7, so that the welding torch 7 can be positioned optimally for welding work. Furthermore, an automatic stop limit switch 10 is provided on the side surface of the bogie 3 in the direction of travel, and if it comes into contact with the plate in front at a partial corner stop, the automatic stop limit switch 10 is activated, stopping welding and the bogie running at the same time. let In this automatic fillet welding machine, the motor 13 is controlled by a control box (not shown) provided on the truck 3, and the truck travels ON10 FF and welds ON10 FF. It is configured so that the speed adjustment and inching mechanism can be operated. (Function) When using the above configuration, the protrusion lengths of the front arm 5 and the rear arm 4 are adjusted, and the two guide rollers 6.
6 and set it along the vertical plate 13. Therefore, the inching button on the control box is pressed to take out the welding wire, and the torch is moved by adjusting the longitudinal adjustment slider 11 and the vertical adjustment slider 12 so that the tip of the wire is aimed at the welding line. If the welding torch 7 hits a narrow horizontal fillet weld, readjust the aiming angle of the torch and the amount of up/down and front/back slide to place a good weld bead even in the narrow joint. be able to. To start welding, arc start and trolley running are performed at the same time with a single button operation. To finish welding, either operate the stop button on the control box, or the automatic welding machine moves and stops automatically as shown in FIGS. 4 and 5, and the automatic stop limit switch 10 hits the vertical plate 15. When they come into contact, welding and truck running will stop at the same time. Also, as shown in Figures 6 to 7, when the automatic welding machine separates from the vertical plate 15 due to the welding cable being pulled for some reason, the rear guy 2 troller 6 acts as a fulcrum and stands upright. The rond of the plate copying separation detector is pushed in by the standing plate 15. As a result, welding and carriage traveling are stopped, thereby preventing unnecessary welding of beads that have strayed from the joint line from being continued. In this embodiment, an independent standing plate following detachment detector 9 is grounded at the tip of the rear arm 4, but when the truck 3 leaves the standing plate 15, the guide roller 6 also comes off from the standing plate 15, so the guide roller 6 It is also possible to adopt a configuration in which the welding and carriage traveling are automatically stopped by detecting the contact state of the parts. This has the following effects. ■ The distance between the guide roller and the welding torch clamped at the center is short, leaving approximately the same amount of welding residue at the welding start and end points, and the overall amount of welding residue is smaller than with conventional machines. ■ A concave part is formed in the dolly to increase the movable range of the welding torch clamped within the concave part, and the range of adjustment of the aiming angle is also expanded, making it lightweight and compact without increasing the dolly size. 11 made it possible to weld narrow fillet welds. ■ In addition, it has a function that stops welding and traveling when the cart detaches from the standing plate it was following or at the welding stop point, so the operator does not have to worry about producing a defective bead, and this improves work automation and welding quality. It is effective in stabilizing the 4. Brief explanation of the drawings Figure 1 is a partially cutaway cross-sectional view cut away at the center, Figure 2 is a plan view, Figure 3 is a rear view, and Figures 4 and 5 show automatic stop operation. The schematic diagrams shown in FIGS. 6 and 7 are schematic diagrams showing a detachment detection state. 1. Wheel, 2. Axis, 3. Dolly, 4. Rear arm, 5. Front arm, 6. Guide roller, 7. Welding torch, 8. Recess, 9. Standing plate. Tracing separation detector, 10
...Limit switch for automatic stop, 11..Slider for front and back adjustment, 12..Slider for vertical adjustment, 13.Fist/motor, 14..Control box, 15..Standing board. Figure 2

Claims (1)

[Scope of Claims] A cart movable along a vertical board and having a recess on the vertical board side; and a cart supported in the recess of the cart so as to be adjustable vertically and longitudinally with respect to the vertical board. A fillet automatic characterized by comprising: a welding torch; a standing plate cool detachment detector provided on a standing plate on the cart; and an automatic stop detector provided on a side surface of the cart. Container.