JPH0438953Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a panel positioning jig used when a plurality of panels are abutted against each other and the abutted portions are welded.

[Conventional technology]

For example, when four panels are butted against each other and positioned in a square shape, and the butt parts are welded, if you try to weld the middle panels on the other two sides between the panels on the two opposing sides, However, due to variations in the lengths of these intermediate panels, the butt positions vary and there is a problem in that the position of the weld line shifts.

To solve this problem, conventional methods have been to butt four panels together and position them, then measure the position of the butt part and correct the welding position, or precision cut the middle panel and check the accuracy of the cutting length. I was trying to secure it.

In addition, as a butt welding device for panels of this type, as disclosed in Utility Model Application No. 61-97368 and Utility Model Application Publication No. 61-97369, a pair of panels are each clamped by a clamping device, There is a known proposal in which these clamp devices are oscillated or moved to perform butt welding on a welding support stand to prevent vertical displacement of the butt portions of each panel.

[Problem that the invention attempts to solve]

However, when butt welding is automatically performed using a laser beam or an electron beam, the tolerance for misalignment of the weld line is approximately 0.1 mm or less.
As it is small at 0.15 mm, high precision is required for butt positioning. For this reason, according to the above-described method of measuring the position of the butt portion after panel positioning and correcting the welding position, this operation requires a lot of time, resulting in a reduction in cycle time.

There was also a problem in reliability for ensuring the accuracy of welding positions.

Furthermore, as mentioned above, in order to ensure the accuracy of the cutting length of the intermediate panel, precision cutting equipment is required, which increases the number of man-hours, resulting in an increase in cost.

Furthermore, the proposals in the above-mentioned publications are all aimed at preventing misalignment in the height direction when two panels are butt welded, and are intended to prevent butt welding by placing an intermediate panel between a pair of opposing panels. No consideration was given to positioning means.

The present invention has been developed in view of the above circumstances, and is a simple method that can accurately position the weld line when butt welding an intermediate panel between a pair of opposing panels, and can perform good welding. The purpose of this invention is to provide a structural panel positioning jig.

[Means for solving problems]

In order to achieve the above object, the present invention provides a method for welding a pair of panels facing each other with at least one intermediate panel sandwiched between the panels at a constant interval. In the panel positioning jig for positioning, at least two
A book stopper pin is fixedly installed, and an actuator that can switch between high pressure and low pressure that presses each of the pair of panels is provided facing the stopper pin,
While sandwiching and pressing the intermediate panel between the pair of panels using the actuator, the actuator is alternately brought into contact with either one of the two sets of stopper pins by switching between high pressure and low pressure, thereby welding the abutting portions. This is how it was done.

[Effect]

According to the above configuration, one panel is first brought into contact with a set of stopper pins, and the intermediate panel is butted against this panel, and the butted portion is welded along a welding line based on these stopper pins,
Next, while one set of panels and the middle panel are fixed in contact with each other by an actuator, the entire panel is moved by switching the actuator between high and low pressure, and the other panel is brought into contact with the other set of stopper pins. Then, the butt portions are welded along the welding line based on these stopper pins.

In this way, the weld line of the butt weld between a pair of panels and the intermediate panel accurately matches the reference weld line regulated by the two sets of stopper pins, allowing for good butt welding without causing misalignment. can be done.

〔Example〕

An embodiment of the panel positioning jig according to the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Two sets of stopper pins 6, 7, 8, and 9 are implanted and fixed. These stopper pins 6, 7 and 8, 9 are also arranged in a square shape, and are located within the inner circumferential surface of a pair of panels 1, 2 in which the intermediate panels 3, 4 are butt-welded. ing.

The tips of two sets of welding torches (not shown) run along tangent lines on the outside of stopper pins 6, 7 and 8, 9, respectively. A pair of actuators 10, 11 and 12, 13, such as air cylinders, are provided on the outside of these stopper pins 6, 7 and 8, 9, respectively. , have the function of bringing into contact with the stopper pins 6, 7 and 8, 9, respectively.

Further, these actuators 10, 11 and 12, 13 can each be switched between low pressure and high pressure by a control device (not shown).

Next, the operation of this embodiment will be explained with reference to FIGS. 1 to 3. First, as shown in FIG. 1, panels 1 and 2 and intermediate panels 3 and 4 are placed at predetermined positions on a welding table 5 using a panel loader (not shown) or the like. Next, actuators 10 and 11 are operated to press panel 1 against stopper pins 6 and 7.
Next, the actuators 12 and 13 are operated to push the panel 2 closer to the panel 1, and the intermediate panels 3 and 4 are pressed between the panels 1 and 2.

At this time, by applying high pressure to the actuators 10 and 11 and applying low pressure to the actuators 12 and 13, the panel 1 comes into contact with the stopper pins 6 and 7, and the abutting portion 1 between the panel 1 and the intermediate panels 3 and 4
4 and 15 are positioned on the outer tangent line of the stopper pins 6 and 7, and a welding torch (not shown) travels on this tangent line to perform butt welding. During this time, the inner surface of the panel 2 and the stopper pins 8, 9 are separated.

After welding of the panel 1 and one end face of the intermediate panels 3, 4 is completed, the actuators 10, 11 are switched to the low pressure side, and the actuators 12, 13 are switched to the high pressure side. As a result, panels 1, 2, 3, and 4 move upward in the figure while remaining fixed in a square shape, and as shown in FIG.
Contact with 9. Then, as in the case of panel 1, abutting portions 16 and 1 between panel 2 and intermediate panels 3 and 4
7 is located on the outer tangent of the stopper pins 8 and 9,
Butt welding is performed. During this time, the inner surface of the panel 1 and the stopper pins 6, 7 are separated.

According to this embodiment, when butt welding the panels 1, 2 and the intermediate panels 3, 4, these butt portions 14, 15 and 16, 17 are connected to the outside of the stopper pins 6, 7 and 8, 9, respectively. Located on the line. Therefore, by aligning the reference welding line of the welding torch with the outer tangents of the stopper pins 6, 7 and 8, 9, butt welding can be performed without misalignment.

Other embodiments of the present invention are shown in FIGS. 4 and 5. Figure 4 shows I with only one intermediate panel 18.
This is a case where a letter-shaped panel is formed, and FIG. 5 shows a case where a composite panel is formed using three intermediate panels 19, 20, and 21. In either case, by appropriately selecting the arrangement of the stopper pins 6, 7, 8, 9 and the number and arrangement of actuators,
It is possible to obtain the same functions and effects as in the previous embodiment. For example, in the case of FIG. 4, there are two actuators 22 and 23, and in the case of FIG. 5, there are six actuators 24 to 29.

[Effect of idea]

As described above, according to the present invention, when an intermediate panel is held between a pair of panels and butt welded, the butt part is positioned by a stopper pin, and the actuator is used to weld the intermediate panel between the pair of panels. The panel positioning jig is constructed so that each side is held in contact with the stopper pin while welding is performed, so the position of the butt part is always constant, and even if there is an error in the length of the intermediate panel, the weld line will be maintained. Good welding can be performed without causing misalignment.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the panel positioning jig according to the present invention, FIGS. 2 and 3 are schematic plan views showing the operation of this embodiment, and FIGS. 4 and 5
The figure is a schematic plan view showing another embodiment of the present invention. 1, 2... Panel, 3, 4, 18-21... Intermediate panel, 6, 7, 8, 9... Stopper pin, 1
0-13, 22-29...actuator, 14
~17... Butt part.

Claims (1)

[Scope of utility model registration request] In a panel positioning jig for positioning the pair of panels when welding the abutment portion by sandwiching at least one intermediate panel between the pair of panels facing each other with a fixed interval, At least two stopper pins are fixedly provided in close proximity to opposing surfaces of the panels, and actuators capable of switching between high and low pressures for pressing the pair of panels are provided opposite to the stopper pins, While sandwiching and pressing the intermediate panel between the pair of panels using the actuator, the actuator is alternately brought into contact with either one of the two sets of stopper pins by switching between high pressure and low pressure, thereby welding the abutting portions. A panel positioning jig characterized by: