JPH0631562A - Method for fabricating sheet panel and its welding device - Google Patents

Abstract

PURPOSE: To form the height of flanges into optional height, in a method for assembling and manufacturing one sheet panel by welding L-shaped flanges formed on the end parts of a plurality of sheet panels to each other and the welding device used for the manufacture. CONSTITUTION: When L-shaped flanges 5, 5 are welded to each other by a welding device having a carriage moving guided with the L-shaped flanges 5, 5 formed on the end parts of sheet panels 3, 3, cutting devices 38, 39 cutting the height of the L-shaped flanges 5, 5 into the optional height before beginning the welding work are provided, and this welding device is moved guided with the flanges 5, 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for assembling and manufacturing a seat panel. A plurality of seat panels are arranged in parallel with each other, the end portions of the seat panel are bent to form a flange, and the flanges are arranged so as to be in close contact with each other, and the end flange of the seat panel is guided to the flange. TECHNICAL FIELD The present invention relates to a manufacturing method in which a welding apparatus including a carriage that is moved while being adhered is used to bond and assemble the carriage. Further, the present invention relates to a welding carriage for carrying out the assembling and bonding method, and relates to a welding carriage in which a welding device arranged under the carriage is guided by rollers of the carriage moving on the flange.

[0002]

BACKGROUND OF THE INVENTION Welding methods and welding carriages of this kind are described in German patent 3739359C1. In this conventional example, a plurality of metal plates are arranged in parallel with each other and welded together to form and manufacture a large metal plate. The flange with the height of is formed,
The seat panel is manufactured by welding the carriage by moving the welding carriage along the flange while the flanges are in contact with each other in a back-to-back relationship. Generally, when welding of an end portion of a flange bent upward is completed by this type of welding method, only the welded portion can be seen on the upper surface of the flange end portion. This known welding carriage is widely used for welding metal plates having various thicknesses.

[0003]

However, when welding a thin metal plate of this kind, there are various problems. Thus, for example, if the welding carriage adapted to the flange end with a height of 15 to 20 mm is a welding carriage which moves along the joint of the flange, this device is used to reduce the height of the flange to only 5 mm. ~
It is not possible to carry out welding of flanges of only 6 mm. In general, a relatively high flange is required for the metal plate to be accurately pressed by the guide portion of the welding carriage and fed into the welding process. Next, a conventional German patent 3739359C1
The problem is that the guide roller and the drive roller of the welding device are provided separately. Therefore, the manufacturing cost is increased. The two guide rollers are spaced apart and each guide roller is driven separately.
Therefore, this conventional example cannot satisfy two different and contradictory requirements. That is, these requirements are
The welding process requires a relatively low flange, while requiring a relatively high flange for guiding multiple sheet panels and for controlling the welding equipment on the flange. The present invention is intended to solve the above problems. That is, since the welding device for welding a plurality of seat panels having bent flanges at the ends is supported by a plurality of relatively low flanges and guided along the relatively low flange ends, the seat panels are optimal. Can be welded in the state.

[0004]

Means for solving the problems of the present invention will be described below. A plurality of seat panels (3, 3) are arranged in parallel to each other, the ends of the seat panels (3, 3) are bent to form flanges (5, 5), and the both bent flanges (5, 5) are formed. In the method of welding the bending flanges (5, 5) by using a welding device having a carriage that is guided and moved in 5), the height (45) of the bending flanges (5, 5) is welded. A method for assembling and manufacturing a seat panel, which is characterized in that it is made low immediately before starting, and a welding device adopted in this manufacturing method, in which a weak portion is formed along side surfaces of the both bent flanges (5, 5). , Along the weak part, the bending flange (5,
5) is easy to cut and separate, the welding device for carrying out the seat panel assembly manufacturing is arranged below, and the guide roller (35) of the welding device carriage is arranged on the end of the flange (5, 5). The separating / cutting device for the bent flanges (5, 5) is arranged on the bottom surface of the carriage in front of the welding device in the moving direction of the carriage, and the separating / cutting device drives a pair of rotations. Cutting roller (3
8, 39), and the cutting rollers (38, 39) have a predetermined inclination angle (44) with respect to the horizontal and have a circular pressing surface on the lower side.

[0005]

Operation: Two sheet panels are arranged in parallel, the end portions of these sheet panels are bent into an L-shape to form rising flanges, and these flange end portions are in contact with each other back to back. When welding a flange with a carriage of a welding device guided by a welding machine, the upper end of the flange is cut by a cutting device to reduce the length of the flange before welding work is performed, and the flanges are welded to each other by the welding device. Weld a flange with a desired height according to the shape and size of the seat panel. It is particularly effective for assembling and manufacturing thin sheet panels.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, two sheet panels 3 are provided with flanges 5, respectively. In these seat panels 3, a gap 6 is formed in the flange 5. To create a flat sheet panel,
Flange 5, respectively, at the longitudinal end of each seat panel
5, the flanges 5 and 5 are sequentially approached and pressed by the device of the present invention to bring them into contact with each other, and then welding is performed. The welding device comprises a guide roller 35 having a groove portion as shown in FIG. The guide roller 35 is provided with a guide groove 36 at the center, and the shape of the guide groove 36 is provided so as to match the shape of the flange. Reference numeral 37
Is a rotating shaft of the guide roller 35. With this structure, the guide groove 36 of the guide roller 35 moves on the flange 5 and the entire welding apparatus is guided in the moving direction of the arrow 19. The support roller 23 can be provided behind the welding device. Since the two rollers 23 and 35 provided at intervals are used, the welding device does not tilt vertically to the horizontal plane of the seat panel. The rear support roller 23 is also provided with a guide groove 24, and the side surface of the roller is formed so as to match at least the height of the weld seam 25. The rear support roller 23 moves on the surface of the sheet, and in cooperation with the front guide roller 35, the welding device is smoothly guided along the flange 5 without tilting.

The axial lengths of the rollers 23, 35 are merely schematic illustrations. Of course, it is possible to employ several similar rollers to prevent the welding device from tilting in the lateral direction. To cut the elevated flange 5 to the desired height 45 (FIG. 3), the cutting device shown in FIG. 1 is provided. This cutting device has two cutting rollers 38, 3
The rollers 38 and 39 are arranged in the direction of arrow 40, and move along a high flange while rotating in the direction of arrow 40. In this way, the arrow 19 of the rotary member
The movement in the direction of is smoothly performed. Cutting rollers 38,3
9 is as shown in the sectional view of FIG. 3, a pressing end portion 42 is provided in contact with the cutting blade end 41 of the cutting roller, and the pressing end portion 42 makes frictional contact with the inner surface of the flange 5. The flanges 5 and 5 are pressed inward with a strong pressure to act so as to be in close contact with each other. The flanges cut and formed by the cutting rollers 38, 39 are shown in the drawing as slanted bases 7, which are to be welded together as will be described later, the bases 7 being electronically welded with a welding holder 11. Welding is performed by the device (shown in the figure as a schematic diagram) and a continuous weld seam 25 can be obtained. The base portion 7 of the flange is successively conveyed to the welding device, and the base portions 7 and 7 are formed with flat weld seams as low as possible. It is possible to adjust the height 45 of the cutting portion so that the weld seam 25 corresponding to the mass shape of the base portion 7 is smoothly formed.

As shown in FIG. 1, an escape device 48 is provided to allow the cut scrap pieces 46 to escape in the direction of arrow 47. In FIG. 1, two cutting rollers 38, 39 are shown.
Are shown to be pushed towards each other in the direction of the arrows 12, 13, this serves to effectively carry out the cutting operation, while at the same time ensuring the conveying action and the pressing operation.
The rotary shafts 43 of the two cutting rollers 38, 39 are arranged so as to form an angle 44 with respect to the vertical (FIG. 3). The purpose of this configuration is to provide the lower pressing end 42 of the cutting rollers 38, 39.
By contacting the inside of the knee portion 26 of the flange with a, the base portion 7 is pressed to bring the two base portions into close contact with each other. Prevent a collision. Needless to say, cutting blade end portions of various shapes other than the shape of the cutting blade end portion 41 described in this embodiment can be adopted.

FIG. 4 shows another embodiment according to the present invention. The same members as those in FIG. 1 are designated by the same reference numerals. Unlike the embodiment of FIG. 1, two pressing and conveying rollers 49, 49 are provided on the opposite side with the flange 5 interposed therebetween. The cutting work is performed by a laser cutting device 51 provided behind the roller. It is of course possible to assemble another pressing / conveying roller other than the two pressing / conveying rollers 49, 49 as in this embodiment. The pressing action is performed by the pair of rollers 49, 49, and another pair of rollers 49, 49 may be used for the conveying action. FIG. 5 shows another embodiment in which a groove 52 is provided in a pair of high flanges 5 to form a portion that is easy to cut. It goes without saying that the easily cut portion may be provided not only on one side surface of the flange but also on both inner and outer side surfaces of the flange as shown in FIG. The cutting operation of the flange provided with the groove 52 is performed by cutting or cutting.

The main feature of the present invention is to answer two conflicting needs. First, the plurality of flanges should be pressed as close to each other as possible, and in this state, the welding apparatus should be smoothly guided by the flanges for efficient welding.
It requires a bent flange formed relatively high. However, this requirement goes against the goal of producing an ideal weld seam. That is, it is ideal that the position where the weld seam is formed is formed in a plane position as low as possible with respect to the plane of the sheet panel. Therefore, when a bent flange having a relatively low height is provided, particularly when a thin sheet panel is used, the flanges are sent to the welding process without being able to press and closely contact each other. Therefore, a bent flange having a low height does not serve as a guide for the welding apparatus. The cutting device provided by the present invention and the sheet panel contact manufacturing method employing the cutting device can satisfy the above contradictory requirements for the first time. Further, in the present invention, the two flanges 5
It is possible to carry out not only the work for cutting in the horizontal direction but also the work for cutting in the oblique direction. FIG. 3 also shows that flanges 5 having different thicknesses can also be welded together. In this regard, in FIG. 6, two flanges 5 having different thicknesses are formed with shoulders 8 having different inclined surfaces, and the thin base 7 and the thick base 7a after cutting are the same or similar. It has a cross section of shape. Similarly, as shown in FIG. 7, it is also possible to employ an oblique cutting portion 9. That is, in this method, the material of the thick flange is reduced,
The material of the thin flange is increased relative to the thick flange end, thus maintaining the uniformity of the weld seam. It should be noted that the beveled cut 9 can be applied to form various angles with respect to two different flanges 5.

The main features of the present invention will be described below.
The height of the flange required for welding and to be formed by the cutting device is different due to the different inclinations. The height needs to be suitable for performing horizontal welding on the sheet panel after it has been cut. Various types of cutting and separating devices for the flange can be used. In the present invention,
I have explained about the whole thing. First, this device is a movable cutting knife (cutting roller), which is located on the side opposite to each other and cuts the end portion of the flange to a desired length. These cutting devices also serve for pressing and conveying at the same time, and are used for pressing the flange portions in close contact with each other. Due to this double action of the cutting knife, the flange portions are pressed close to each other, and the cutting is smoothly performed in this state. The rotation and speed of the cutting knife can be various, but they are determined in relation to the speed at which the welding device moves along the flanges in close contact with each other and the speed for welding work. Further, as described above, the cutting knife is pressed obliquely in the lateral direction of the flange to exhibit the frictional action and the rotary transport action with respect to the flange, whereby the cutting operation proceeds smoothly and ideally. In addition to the cutting knife, the pressing and conveying rollers may be arranged so as to face each other in opposite directions. In this case, a pressing / conveying roller is separately provided in front of or behind the opposite cutting knives. The cutting device includes all known devices. In addition to rotary cutting knives, rotary shearing devices are also used. Further, a laser cutting device using a laser beam may be adopted. Also adopting a high speed cutting knife,
It is also possible to rotate and move at a higher speed than the conveying speed of the welding device that moves along the weld seam. It is also conceivable to use a cutting saw to cut off the flange end. This device operates either sideways or by rotary movement. By forming a long groove or notch along the side surface of the flange which facilitates the cutting of the flange in the longitudinal direction during the manufacturing of the flange, the upper end of the flange can be easily separated along the long groove or notch. it can. Therefore, the separation used in the present invention may be understood to include removing the upper end of the high flange by using the slot or notch. A punched hole may be used instead of the long groove.

The invention also includes all known welding devices. For example German patent 3
Welding devices not listed in the description of the present invention such as the electronic welding device, automatic welding device, and thermite welding device described in 739359C1 can also be used. The height of the cut and formed flange is determined according to the type of welding equipment used. In order to determine the height of the flange, first, the separating / cutting device itself is configured to be vertically movable up and down, and the type of cutting knife is exchanged to adjust the required flange height. It is also possible. As already explained, the cutting knife not only serves for cutting the flange, but also exerts a frictional pressing action on the flange and makes it possible to carry out a reliable conveying action. To this end, the cutting knife has a pressing surface or end for contacting the inner surface of the flange and moves along the flange while frictionally pressing. More importantly, the cutting knife is arranged horizontally or vertically at a predetermined angle so that the circular surface of the cutting device extends to the inner surface of the curved portion below the flange, so that the entire flange is in close contact. Is supported to do so. In this way, the flanges are sent to the welding process in a state in which they are pressed against each other. Also in connection with this,
The frictional pressing action can be performed at a position as close as possible to the front of the range in which the welding action is performed in order to ensure the optimal execution of the welding operation. The two cutting knives are arranged at a slight angle with respect to the vertical so that even if the lower circular part of the cutting knife contacts the inside of the curved part of the flange and is conveyed along the end of the flange, This is to prevent the formation of flaws on the horizontal surface.

[0013]

[Effect] In the present invention, the end portions of the sheet panels arranged in parallel are bent into an L shape to form a rising flange,
When manufacturing one large sheet panel by welding the flanges to each other, the rising bent portion of the flange is cut and formed to a desired height using a cutting device before the flange welding,
Since the flanges having the desired height are welded to each other, it is possible to manufacture a flange having a height according to the size of the shape of the seat panel, and it is particularly effective for assembling and manufacturing a thin seat panel. . Further, a weak portion such as a groove portion is formed in advance at a predetermined position on the side surface of the flange, and the height of the flange can be adjusted by removing a part of the flange at this groove portion, so that the flange having a desired height can be easily formed. Then, the cutting device used for cutting the flange is arranged so as to have a predetermined inclination angle with respect to the horizontal plane, and a part of the outer peripheral surface of the cutting device and the bent inner side surface of the flange during operation of the cutting device,
There is an effect that a frictional pressing action is generated and two parallel flanges are brought into close contact with each other, so that the flanges can be brought into close contact accurately and easily.

[Brief description of drawings]

FIG. 1 is a schematic line plan view of a welding device according to the present invention.

FIG. 2 is a schematic side view of a guide roller.

FIG. 3 is an enlarged sectional view of a cutting roller.

FIG. 4 is a plan view of another embodiment related to the improvement of FIG.

FIG. 5 is a side view in which a groove for facilitating cutting is provided at a flange end.

FIG. 6 is a sectional view in which a shoulder portion is formed.

FIG. 7 is a cross-sectional view showing oblique cutting.

[Explanation of symbols]

 3 Sheet Panel 5 Flange 6 Gap 8 Shoulder 9 Cutting 11 Electronic Welding Holder 19 Conveying Direction 23 Support Roller 24 Guide Roller 25 Welding Seam 26 Flange Knee 27 Lower Surface 35 Guide Roller 36 Guide Groove 37 Rotating Shaft 38 Cutting Roller 39 Cutting Roller 39 40 rotation direction 41 cutting edge 42 pressing end 42a pressing end 43 rotating shaft 44 angle 45 height 46 scrap debris 48 escape device 49 pressing and conveying roller 51 laser cutting device 52 groove

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B23K 37/04 X 7011-4E // B23K 101: 18

Claims (11)

[Claims] 1. A welding device comprising a plurality of seat panels arranged in parallel with each other, the end portions of the seat panels being bent to form a flange, and a carriage which is guided and moved by the bent flange. In the method for welding the bent flange, a method for assembling and manufacturing a seat panel, wherein the height of the bent flange is made low immediately before starting a welding operation. 2. The method for assembling and manufacturing a seat panel according to claim 1, wherein a weak portion is formed along a side surface of the bent flange, and the bent flange is separated along the weak portion. . 3. A welding device for carrying out assembly and production of a seat panel is arranged below, a guide roller of a welding device carriage is arranged above a flange, and a bending flange cutting device is arranged in a moving direction of the carriage. 3. The welding apparatus used for seat panel assembly manufacturing according to claim 1, wherein the welding apparatus is arranged on the bottom surface of the carriage in front of the welding apparatus. 4. The welding device according to claim 3, wherein the separation cutting device is a pair of cutting rollers. 5. The welding device according to claim 4, wherein the pair of cutting rollers are rotationally driven. 6. The welding apparatus according to claim 5, wherein the pair of cutting rollers has a pressing surface or a pressing end portion. 7. The welding device according to claim 4, wherein the cutting roller has a predetermined inclination angle with respect to the horizontal and has a circular pressing surface below. 8. The welding device according to claim 5, wherein various changes can be made to the driving of the cutting roller. 9. The welding device according to claim 4, wherein the distance between the pair of cutting rollers is adjustable. 10. The welding device according to claim 3, wherein the cutting device is a rotary shearing device, a laser cutting device, a cutting saw, or the like. 11. The welding device according to claim 3, wherein the height of the cutting device is adjustable.