JP3788474B1 - Method and apparatus for conveying sheet-like thin plate to be butt welded - Google Patents

Abstract

An object of the present invention is to provide a method and apparatus for conveying a sheet-like thin plate that facilitates adjustment work of the conveying means and prevents the welded ends of a plurality of thin plates from overlapping vertically to be butt welded.
In a method of conveying a plurality of sheet-like thin plates 7A, 7B cut in advance into a strip shape by guiding them to a welding position of a welding means 6, separate conveying paths having a common horizontal plane for the thin plates 7A, 7B. In 17A and 17B, the respective welded ends 21A and 21B adjacent to each other are transported to the welding means 6 and the welded end 21A of one thin plate 7A passes vertically through the welding position of the welding means 6. The guide member 25 is guided by being brought into contact with the guide surface 25 located in the plane, while the welded end 21B of the other thin plate 7B is pressed against the welded end 21A of the one thin plate 7A guided by the guide surface 25. is there.
[Selection] Figure 3

Description

  The present invention relates to a method and apparatus for conveying a sheet-like thin plate to be butt welded.

  For example, when a steel plate having a different material or thickness is required for adjacent parts, such as an automobile body, a sheet-like thin plate (steel plate) cut in advance into two (or more) strips, A tailored blank material is formed and dealt with by continuously welding in the longitudinal direction using a continuous welding apparatus.

  As a method of forming a tailored blank material by welding short sheet-like thin plates, a movable type that is fixed in a state where the end faces of a plurality of sheet-like thin plates are abutted so that there is no gap, and can be moved along the joint A method of welding a plurality of sheet-like thin plates using a welding machine, or moving a plurality of sheet-like thin plates in a state where the end faces are in contact with each other, and welding a plurality of sheet-like thin plates using a fixed type welding machine There is a way.

The continuous welding apparatus using the method of moving the sheet-like thin plate is provided with a conveying means for each of the two thin plates, the conveying surfaces thereof are inclined at an acute angle and have a step in the vertical direction. It is comprised so that it may merge to a common horizontal surface immediately before (for example, refer patent document 1).
Japanese Patent Publication No. 6-13153

  However, in the sheet thin plate conveying means used in the continuous welding apparatus described in the above-mentioned patent document, each of the two thin plates is provided with a conveying means, so that an extra man-hour required for adjusting the conveying means is required. .

  In addition, since the conveying surfaces of the conveying means are inclined at an acute angle with each other and have a step in the vertical direction, the conveying surfaces are joined to a common horizontal plane immediately before the welding machine. If it is not accurate, there is a possibility that a problem occurs that the welded ends of the thin plates overlap each other or a gap is formed.

  Furthermore, since the guide surface of the guide means for guiding the thin plate always rubs against the welded end of the thin plate, fluctuations in the guide position due to wear are expected, but the two thin plates are opposite to each other on different transport surfaces. In the configuration of guiding from the side, the relative position of the guide surface changes due to wear, and if this change progresses, the welded ends of the thin plates will overlap each other, so the relative position must be adjusted periodically. Absent.

  The present invention has been made in consideration of the above-described circumstances, and facilitates adjustment of the conveying means and conveys the sheet-like thin plate to be butt-welded in which the welded ends of a plurality of thin plates are prevented from overlapping vertically. It is an object to provide a method and apparatus.

  In order to solve the above-described problem, a method and apparatus for conveying a sheet-like thin plate to be butt welded according to the present invention includes a plurality of sheet-like thin plates that have been cut into strips in advance as described in claim 1. In the method of guiding and conveying the welding means to the welding position of the welding means, the thin plate is conveyed to the welding means in a state where the respective welded ends adjoining each other in separate conveyance paths having a common horizontal plane. The welded end of the one thin plate is guided by being brought into contact with a guide surface located in a vertical plane passing through the welding position of the welding means, while the welded end of the other thin plate is guided by the guide surface. It is guided by being pressed against the welded end of the one thin plate.

  Further, in order to solve the above-described problem, as described in claim 2, the welded ends of a plurality of sheet-like thin plates adjacent to each other are guided and conveyed to the welding position of the welding means. In the conveying apparatus, a conveying path having separate conveying surfaces is provided in substantially the same horizontal plane adjacent to each other with a vertical plane passing through the welding position of the welding means, and the conveying surface of one conveying path is formed flat. In addition, on the transport surface of the other transport path, a bay recess is formed by pushing down partly about the plate thickness of the thin plate partially with respect to the transport surface of the one transport path. Guide means having the guide surface against which the welded end of the thin plate transported by the one transport path is pressed in the vertical plane is disposed, and these transport paths are horizontally positioned on the entrance side of the transport path in plan view. In the direction of the To approach each other toward the vertical plane passing through the welding position of the welding means on the side, and has a conveying direction inclined to the horizontal direction.

  Furthermore, in order to solve the above-mentioned problem, as described in claim 3, the guide means is a thin plate that is alternately disposed with a plurality of carry-in rollers constituting the other transport path and is transported in the transport path. A plurality of guide rollers for forming a bay recess, and the axial end surfaces thereof are the guide surfaces.

  Furthermore, in order to solve the above-described problem, as described in claim 4, the welding end of the thin plate conveyed on the one conveyance path is placed at the welding side of the welding means on the entrance side of the conveyance path. Other guiding means is provided for guiding in parallel with the passing vertical plane.

  According to the method and apparatus for conveying a sheet-like thin plate to be butt welded according to the present invention, the adjustment work can be shortened because only the guide surface for one thin plate needs to be adjusted. In addition, it is possible to prevent the occurrence of a situation where the welded ends overlap each other in the vertical direction.

  Further, since the relative position of the guide surface does not change, a high welding quality can be maintained without periodic relative position adjustment. Furthermore, since burrs, burrs and the like generated during the cutting of the thin plate are automatically scraped off, the surface accuracy of the butt surface of the welded end is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an elevation view of a continuous welding apparatus to which a method and apparatus for conveying sheet-like thin plates to be butt welded according to the present invention is applied. As shown in FIG. 1, the continuous welding device 1 includes a sheet-like thin plate conveying device 3 assembled to a frame 2, for example. The transport device 3 is mainly composed of a thin plate carry-in unit 4 and a carry-out unit 5.

  Further, in the present embodiment, for example, a fixed laser welding machine 6 is used as welding means, and is installed from above, for example, between the carry-in unit 4 and the carry-out unit 5. Two sheet-like thin plates are welded by laser irradiation.

  FIG. 2 is a schematic perspective view of the carry-in unit 4 of the transport device 3, and FIG. 3 is a schematic plan view of the carry-in unit 4. 4 is a schematic side view of the carry-in unit 4, and FIG. 5 is an enlarged side view of the main part of FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5, and FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.

  As shown in FIGS. 2 to 7, the continuous welding apparatus 1 is continuous in the longitudinal direction by a welding machine 6 while conveying sheet-like thin plates 7 </ b> A and 7 </ b> B cut into two or more strips in advance. Are welded and integrated to form a tailored blank material (not shown). Specifically, for example, two thin plates 7A and 7B having different thicknesses arranged in the width direction are carried in the direction of the welding machine 6 by the carry-in unit 4, and these two sheets are used using the welding machine 6 at a predetermined position. After the sheet-like thin plates 7A and 7B are joined together, the integrated tailored blank material is carried out by the carry-out unit 5.

  The carry-in unit 4 and the carry-out unit 5 of the sheet-like thin plates 7A and 7B are composed of, for example, a transport roller device 8 disposed on the floor surface and a clamp roller device 9 disposed above the transport roller device 8. The sheet-like thin plates 7A and 7B are conveyed while being sandwiched between the clamp roller device 9 and the conveying roller device 8 on the upper and lower sides thereof.

  The transport roller device 8 includes a plurality of carry-in rollers 10 in the first half and a plurality of carry-out rollers 11 in the second half, and these carry-in / out rollers 10, 11 are connected to, for example, the carry-in unit 4 and the carry-out unit 5. The clamp roller device 9 is rotationally driven by, for example, a belt 13 or the like by the power of a motor 12 or the like installed therebetween, and the clamp roller 14 has a sheet-like thin plate on the carry-in / out rollers 10 and 11 of the carry-in unit 4. 7A and 7B are pressed to control the sliding between the sheet-like thin plates 7A and 7B and the carry-in / out rollers 10 and 11. In addition, in the present embodiment, two sets of carry-in units 4 are installed for each of the sheet-like thin plates 7A and 7B, and are separated by sandwiching a vertical plane passing through the welding position of the welding machine 6 in substantially the same horizontal plane adjacent to each other. It has a transfer surface.

  The clamp roller device 9 is configured to be movable, for example, so as not to get in the way when the sheet-like thin plates 7A and 7B are installed. Further, the transport roller device 8 is fixed to the frame 2 or the like.

  The carry-in roller 10 is rotatably supported by a rotation shaft 15 orthogonal to the conveyance direction axis of the sheet-like thin plates 7A and 7B, and the plurality of carry-in rollers 10 are along the conveyance direction axis of the sheet-like thin plates 7A and 7B. The two sheet-like thin plates 7A and 7B are arranged in parallel. On the other hand, the clamp roller 14 is disposed corresponding to each carry-in roller 10 with the sheet-like thin plates 7A and 7B interposed therebetween, and the rotation shaft 16 that pivotally supports the clamp roller 14 is a rotation of the carry-in roller 10. Arranged parallel to the axis 15.

  As shown in FIG. 3, the conveyance paths 17A and 17B formed by the two sets of carry-in rollers 10 that convey the two sheet-like thin plates 7A and 7B are horizontal on the entrance side of the conveyance paths 17A and 17B in a plan view. The central axis 18 of the conveying device 3 is spaced apart in the direction and close to each other toward the central axis 18 of the conveying device 3 on the outlet side of the conveying paths 17A and 17B, that is, the vertical plane passing through the welding position of the welding machine 6. It is arrange | positioned with the conveyance direction inclined in the direction, ie, a horizontal direction. Moreover, as shown in FIG. 4, the conveyance surfaces of both conveyance paths 17A and 17B have a common horizontal plane.

  A plurality of set rollers 19A, 19B for determining the loading position of the two sheet-like thin plates 7A, 7B are arranged as guide means on the entrance side of the transport paths 17A, 17B. These set rollers 19A and 19B are pivotally supported by a vertical rotation shaft 20, and come into contact with one end edge of each of the two sheet-like thin plates 7A and 7B so that the thin plates 7A and 7B are brought into contact with each other. Guide at the loading position.

  In the present embodiment, the thicker thin plate 7A (upper side in FIG. 3) passes through the welding position of the welding machine 6 with the center shaft 18 side welded end 21A of the conveying device 3 in contact with the set roller 19A. The thin plate 7B (lower side in FIG. 3), which is guided in parallel with the vertical surface, has an outer edge 22 opposite to the central axis 18 side of the conveying device 3 at the other set roller 19B. It abuts and is guided. That is, the two sheet-like thin plates 7A and 7B are guided by different guide surfaces that are not in a common vertical plane at the entrance position on the entrance side.

  The two sheet-like thin plates 7A and 7B gradually approach each other so that the welded ends 21A and 21B are abutted with each other upstream of the welding machine 6 disposed on the exit side of the conveyance paths 17A and 17B. While being conveyed toward the welding machine 6 on the conveyance paths 17A and 17B (see FIGS. 2 and 3). The clamp roller 14 is installed in a range excluding the loading position of the sheet-like thin plates 7A and 7B.

  A plurality of guide rollers 23 are arranged in front of the welding machine 6 on the outlet side of one of the two conveyance paths 17A and 17B, in the conveyance path 17B of the thin plate 7B having the smaller thickness in this embodiment. The These guide rollers 23 are arranged above the thin plate 7B in a side view and between the carry-in rollers 10 in a plan view, that is, the carry-in rollers 10 and the guide rollers 23 are alternately arranged.

  These guide rollers 23 have a thinner thin plate 7B conveyed by one conveying path 17B and a thinner one than the thinner thin plate 7A partially conveyed by the other conveying path 17A. The position is set so as to form a bay recess 24 between each of the carry-in rollers 10 of one of the transport paths 17B by pushing down about the thickness of the thin plate 7B (see FIGS. 5 and 6). Further, the guide roller 23 is provided with a vertical surface through which the central axis 18 of the conveying device 3 passes, that is, a central axial end surface located in a vertical surface passing through the welding position of the welding machine 6 as the guide surface 25. The transport surface of the other transport path 17A formed by the carry-in roller 10 is formed flat.

  The guide roller 23 is also a means for guiding the thicker thin plate 7A to the welding position of the welding machine 6, and the central axial end surface of the guide roller 23 is the thicker one conveyed by the carry-in roller 10 as a guide surface 25. The welded end 21A of the thin plate 7A is pressed to guide the welded end 21A of the thin plate 7A along the central axis 18 line of the transport device 3 to the position immediately before the welding machine 6, and is transported by the carry-in roller 10. The welded end 21B of the thin plate 7B having the smaller thickness is that of the other thin plate 7A guided by the guide surface 25 that is the axial end surface of the guide roller 23 as the thin plate 7B approaches the welding machine 6. It is pressed against the welded end 21A and finally guided to a vertical plane through which the central axis 18 line of the conveying device 3 passes.

  Next, the operation of this embodiment will be described.

  The welded end 21B of the other thin plate 7B is pressed against the welded end 21A of the one thin plate 7A guided in a predetermined state by the guide roller 23, and is brought into contact with the welded end 21B. Since the positioning with respect to the welding point is performed, only the guide surface 25 (center side axial end surface) for one thin plate 7A needs to be adjusted, and the number of man-hours required for the adjustment work can be reduced.

  Moreover, both thin plates 7A and 7B are conveyed to the welding machine 6 in a state in which the respective welded ends 21A and 21B are adjacent to each other over the entire length by separate conveying paths 17A and 17B having a common horizontal plane. By being comprised so that generation | occurrence | production of the situation where each to-be-welded end 21A, 21B overlaps up and down can be prevented.

  Further, since the guide roller 23 is provided with only the guide surface 25 for one thin plate 7A (end surface in the axial direction on the center side) and not the guide surface for the other thin plate 7B, the guide surface 25 of the guide roller 23 is covered, for example. Even if it is worn by rubbing with the welding end 21A, the relative position of the guide surface 25 does not change, and high welding quality can be maintained without regular relative position adjustment.

  Furthermore, both the thin plates 7A and 7B are transported in the transport paths 17A and 17B having a common horizontal plane, with the welded ends 21A and 21B attached to each other, and the welded end 21B of one thin plate 7B. Is repeatedly slid up and down by the action of the guide roller 23 and the carry-in roller 10 and rubs against the welded end 21A of the other thin plate 7A, so that burrs, burrs, etc. that occur when the thin plates 7A and 7B are cut are automatically generated. The surface accuracy of the butted surfaces of the welded ends 21A and 21B is improved.

The elevational view of the continuous welding apparatus which shows one Embodiment of the conveyance method and apparatus of the sheet-like thin plate which are butt-welded based on this invention. The schematic perspective view of a carrying-in unit. The schematic plan view of a carrying-in unit. FIG. The side view which expanded the principal part of FIG. Sectional drawing which follows the VI-VI line of FIG. Sectional drawing which follows the VII-VII line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Continuous welding apparatus 3 Conveyance apparatus 6 Welding machine (welding means)
7A, 7B Sheet-like thin plate 10 Carry-in rollers 17A, 17B Transport paths 19A, 19B Set rollers (guide means)
21A, 21B Welded end 23 Guide roller (guide means)
24 Bay entry recess 25 Guide surface

Claims (4)

In a method for conveying a plurality of sheet-like thin plates cut into strips in advance to a welding position of a welding means, the thin plates are connected to respective welded ends adjacent to each other in separate conveyance paths having a common horizontal plane. While conveying each other to the welding means, the welded end of the one thin plate is guided in contact with a guide surface located in a vertical plane passing through the welding position of the welding means, while the other A method for conveying a sheet-like thin plate to be butt welded, wherein the welded end of the thin plate is guided by being pressed against the welded end of the one thin plate guided by the guide surface. In a conveying apparatus that guides and conveys the welded ends of a plurality of sheet-like thin plates adjacent to each other to the welding position of the welding means, the welding position of the welding means in substantially the same horizontal plane adjacent to each other A conveying path having different conveying surfaces across a vertical plane passing through the first conveying path, the conveying surface of one conveying path is formed flat, and the conveying surface of the other conveying path is formed on the conveying surface of the one conveying path. On the other hand, a bay recess is formed by pushing down partly about the thickness of the thin plate, and the welded end of the thin plate transported by the one transport path is pressed into the vertical plane of the recess. The guide means having the guide surface is disposed, while these transport paths are horizontally spaced apart from the entrance side of the transport path in plan view, and the welding position of the welding means is set on the exit side of the transport path. Towards each other in the vertical plane To near, transport of a sheet thin to be butt welded, characterized in that it has a conveying direction inclined to the horizontal direction. The guide means is a plurality of guide rollers that are alternately arranged with a plurality of carry-in rollers that constitute the other conveyance path and that form a recess in a thin plate that is conveyed on the conveyance path. 3. A sheet-like thin plate conveying apparatus to be butt welded according to claim 2, wherein the sheet is a guide surface. The other guide means which guides the to-be-welded end of the thin plate conveyed by said one conveyance path in parallel with the vertical plane which passes along the welding position of the said welding means on the entrance side of the said conveyance path is provided. A sheet-like thin plate transfer device to be butt welded.

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