JPH0259174A - Method and device for joining beltlike metal plates - Google Patents

Abstract

PURPOSE:To prevent defective welding at the time of performing butt welding on end faces cut with a gradient in the cross direction of preceding and succeed ing beltlike metal plates by cutting both plates separately and rolling a joined part to suppress the occurrence of burrs at the time of cutting. CONSTITUTION:The preceding and succeeding beltlike metal plates 36 and 38 are fixed by outlet side and inlet side clamps 26 and 22 respectively. After the tip of the plate 36 is cut diagonally with a cutting unit 32 inclined by >=5 deg., a joining unit 14 is then slightly moved in the right direction and an end of the plate 38 is cut at the same angle as before by the unit 32. The unit 14 is then moved in the right direction and a welding unit 34 is arranged above the cut ends of the plates 36 and 38 and in this state, the clamps 26 and 22 are operated and the cut parts of the plates 36 and 38 are superposed (or abut ted) slightly on each other and fixed. Afterward, the plates 36 and 38 are welded and joined together by the unit 34 and the unit 14 is moved to the left direction and a rolling unit 30 is arranged above the joined part 48 to roll the joined part 48.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and apparatus for joining band-shaped metal plates,
In particular, the present invention relates to a joining method and apparatus for joining flexible strip-shaped thin metal plates.

[Prior art]

Methods and apparatuses for joining band-shaped metal plates include a method in which the band-shaped plates are overlapped and bonded, and a method in which the band-shaped plates are butt-joined. FIG. 5 is a perspective view showing a conventional overlapping joining method. The band-shaped metal plate 70 and the band-shaped metal plate 72 shown in FIG. 5 are overlapped, and the bonding surface 73 is bonded with double-sided adhesive tape or fused by ultrasonic waves (as described in Japanese Patent Application Laid-Open No. 59-24526). Figures 4 and 6).

However, in the conventional method of joining band-shaped metal plates as shown in FIG. 5, there is a step at the joining part, so it is not possible to make smooth contact with a bus roller or the like. Further, in the photosensitive layer coating process in the manufacture of lithographic printing plates, the coating device must be evacuated to prevent damage when the joint portion of the band-shaped metal plate passes through. Furthermore, even if the coating device is not retracted, the bonding surface 73 may trap air bubbles, which will adversely affect the coating state and cause quality defects.

In addition to this problem, since the joint surface 73 is often not bonded over the entire surface, the joint surface 73 may be bonded while the strip is being transported.
3 may be turned over. If there is a surface treatment process using a treatment liquid, when the strip metal plate passes through the treatment liquid, the treatment liquid etc. may enter the gap between the joint surfaces 73, causing quality defects in the subsequent process. Become.

Therefore, the applicant of the present application has proposed a method of welding strip metal plates by butting them together or overlapping them by a small amount, and furthermore, in order to eliminate the problem caused by the step difference in the joint, a joining method in which the welded joint is rolled. (Special application 1986)
2-181895). In addition, in order to increase production efficiency, the joints of the metal strips are passed through a large number of bath rollers while being subjected to large tension. As a joining method that meets these demands, a method has been proposed in which the cut end of the welded joint is inclined at an angle of 5° or more with respect to the width direction of the band-shaped metal plate (Japanese Patent Application No. 62-257991). In such a welding method, the strength of the welded joint is increased when the bus rollers, etc. The degree of freedom increases.

However, this conventional joining method requires accurate positioning of the butting surfaces of the metal plates, so
There is a problem in that it is difficult to quickly and accurately butt the butt surfaces together, and it takes a long time to butt them. On the other hand, the work of joining strip-shaped metal plates is performed while they are being transported, and an Akinimulator is used to perform the joining work without stopping the transport line. However, the capacity of the accumulator is limited, and the time allotted for bonding operations is also limited. For this reason, if the joining work lasts a long time, there is a problem that the conveyance line will stop.

In order to solve this problem, Japanese Patent Application Laid-Open No. 61-276770 and Japanese Patent Application No. 63-31630 disclose a method for joining band-shaped metal plates. In this method, as shown in FIG. 6, a metal strip 76 and a metal strip 78 are overlapped, and the overlapping portion is tilted by θ0 (5 degrees or more) with respect to the width direction of the metal strip using a cutter or the like. Cut. Therefore, the abutting surfaces of the cut and formed band-shaped metal plates are accurately abutted against each other at the same time as the cutting, and this state can be maintained and welding can be performed immediately. As a result, the positioning operation of the abutting surfaces becomes unnecessary, and the efficiency of the joining operation can be improved. Also, when superimposing a minute amount, using this cut surface as a reference allows the minute amount to be superimposed quickly and accurately.

[Problem that the invention seeks to solve]

However, this joining method is suitable for plate thicknesses of 0.1 mm to Q,
, 4mm or even Q, 1mm to 0.5mm When joining a wide range of metal strips, the total thickness of the cut plates is 0.2mm because two plates are overlapped and cut at the same time.
~Q, 3mm, or 0.2mm ~1. Omm wide range.

Therefore, in the clearance type shear cut method, there is a problem that the gap becomes large and welding defects occur when overlapping or butt welding is performed by a minute amount.

The present invention has been made in view of the above circumstances, and provides a joining method for joining strip-shaped metal plates, which allows the abutting surfaces of the strip-shaped metal plates to be easily butted together, and furthermore, can suppress the occurrence of burrs during cutting. The purpose of this paper is to propose a method and an apparatus for the same.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a method for joining a band-shaped metal plate by welding a leading band-shaped metal plate and a trailing band-shaped metal plate. fix the cutting unit, tilt the cutting unit at an angle of 5° or more, cut the edge of the leading metal band and the trailing metal plate diagonally separately, and operate the matching unit to separate the leading and trailing metal metal plates. The cut parts of the band-shaped metal plates are butted or overlapped by a small amount and fixed, the welding means is moved to the abutting part or the overlapped part by a small amount to weld, and then the rolling means is moved to the welding position and rolled. It is characterized by

In addition, in order to achieve the above object, the present invention provides a band-shaped metal plate joining device for welding and joining a leading band-shaped metal plate and a trailing band-shaped metal plate, which includes: an apparatus main body;
A butting unit that can move the leading metal strip and the trailing metal plate by a certain amount and butt their respective ends or overlap them by a minute amount and fix the same; a cutting unit capable of cutting a band-shaped metal plate; a joining unit that welds and joins the abutting portion or a minute overlapping portion of the leading band-shaped metal plate and the trailing band-shaped metal plate; and a rolling unit that rolls the welded joint. It is characterized by having a unit.

[Effect]

According to the present invention, the cutting unit, the welding unit, and the rolling unit can be moved arbitrarily, and furthermore, the trailing metal strip and the leading metal strip can be moved by a certain amount using the matching mechanism. , Cut the leading band metal plate and the trailing band metal plate separately, abut the cut parts of the leading band metal plate and the trailing band metal plate, or overlap them by a small amount and fix them, and then cut the band metal plate. Welding and rolling can be performed by moving the welding unit and rolling unit without moving the plate. Further, since the leading band-shaped metal plate and the trailing band-shaped metal plate can be cut separately, it is possible to prevent the occurrence of burrs during cutting. Therefore,
Band-shaped metal plates can be joined with high precision and a high success rate.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the method and apparatus for joining band-shaped metal plates according to the present invention will be described in detail below with reference to the accompanying drawings.

The welding device 10 for band-shaped metal plates shown in FIG.
2, a matching unit 13, and a joining device 14.

The main body 12 of the apparatus has a base plate 18, and as shown in FIG. There is. Further, in FIG. 1, an edge cutting mechanism 28 is mounted on the left side of the second support column 24, and cuts the edge of the band-shaped metal plate as necessary.

The butting unit 13 consists of an entry clamp 22 and an exit clamp 26, the entry clamp 22 is placed on the top surface of the first support 20, and the exit clamp 26 is placed on the top surface of the second support 24. has been done.

A joining unit 14 is supported between the first support column 20 and the second support column 24 so as to be movable in the left-right direction in FIG. This joining unit 14 has a rolling unit 30 disposed in its center and a cutting unit 32 at its right end.
A welding unit 34 is further provided at the left end thereof.

The rolling unit 30 performs a rolling process on the welded portion between the band-shaped metal plate 36 and the band-shaped metal plate 38 using a rolling roller 30A. This rolling process can press and eliminate the level difference that occurs in the welded joint. Furthermore, by this rolling treatment, the tensile strength decreased by welding is recovered by work hardening, and the joint strength is increased because the shape is processed into a shape that is less likely to cause stress concentration.

The cutting unit 32 cuts the ends of the band-shaped metal plate 36 and the band-shaped metal plate 38 from above and below using a pair of cutters 33 and 33. The pair of cutters are arranged at an angle θ with respect to the width direction of these strip-shaped metal plates. The angle θ is set to 5° or more, preferably about 25°. still,
A slitter type cutter such as a shear cutter, a Gobel blade type, or a clearance cut type may be used as a cutter for cutting the band-shaped metal plate 36 and the band-shaped metal plate 38. These are selected depending on the thickness and material of the strip metal plate to be cut.

As shown in FIG. 2, the welding unit 34 is mainly composed of a welding torch 40, welding clamps 44, 44, and a welding backper 46, and is a high-frequency pulsed arc welding unit. The welding torch 40 is a moving unit 48
Similarly to the cutter, the moving unit 48 is movably supported at an angle θ with respect to the width direction of the band-shaped metal plate 36 and the band-shaped metal plate 38. In addition to TIG arc welding and MIG arc welding, welding methods include gas welding, CO2, YAG, etc. laser welding, etc.
It is selected and used depending on the type of band-shaped metal plate.

The method for joining the band-shaped metal plates constructed as described above and the operation of the apparatus will be explained.

First, the leading band-shaped metal plate 36 and the trailing band-shaped metal plate 38 are fixed using the exit side clamp 26 and the entry side clamp 22, respectively, as shown in FIG. 3 (A>).

Next, as shown in FIG. 3(B), the cutting unit 32 cuts the leading end of the preceding band-shaped metal plate 36. Next, move the joining unit 14 slightly to the right in FIG.
As shown in C), the cutting unit 32 cuts the end of the trailing band-shaped metal plate 38.

In this case, these cutting portions are cut at an angle of θ=25° with respect to the width direction of the leading band-shaped metal plate 36 and the trailing band-shaped metal plate 38, as shown in FIG.

Next, the joining unit 14 is moved 900 mm to the right in FIG. 1, and the welding unit 34 is placed above the cut ends of the leading band-shaped metal plate 36 and the trailing band-shaped metal plate 38. In this state, by operating the exit side clamp 26 and the entry side clamp 22, as shown in FIG.
and the trailing band-shaped metal plate 38 at a cut portion of 0.5 to 2. Qm
rnoverlap and fix. Next, as shown in FIG. 3(E), the leading band-shaped metal plate 36 and the trailing band-shaped metal plate 38 are welded together by the welding unit 34, and after welding, the joining unit 14 is moved to the left in FIG. The rolling unit 30 is moved by 450 ωm in the direction above the welded joint 48, and the portion 48 is rolled as shown in FIG. 3(F). As a result, the level difference in the welded portion 480 is eliminated and the joining is completed.

According to the present invention, by setting in advance the respective movement amounts of the joining unit 14, the exit side clamp 28, and the entrance side clamp 22, it is possible to easily butt or overlap the metal strips to be welded together by a minute amount. Since welding and rolling can be performed at the same time, it is possible to improve the efficiency of joining work of band-shaped metal plates.

Furthermore, the welded joint 48 has a width of 5 mm in the width direction of the band-shaped metal plate.
Since it is formed at an angle of more than 100 degrees, the welding strength can be increased compared to the conventional welding method in the width direction.

Furthermore, since it is possible to suppress the occurrence of flash when cutting the band-shaped metal plate, it is possible to prevent welding defects.

〔Effect of the invention〕

As explained above, according to the method and device for joining band-shaped metal plates according to the present invention, the leading band-shaped metal plate and the trailing band-shaped metal plate are cut separately, and the cut portions are butted together, or a small amount Since welding and rolling can be performed after overlapping, it is possible to join the leading band-shaped metal plate and the trailing band-shaped metal plate with high precision and a high success rate.

[Brief explanation of the drawing]

Fig. 1 is a front view of the belt-shaped metal plate apparatus according to the present invention;
The figure is a front view of the welding unit, Figures 3 (A) to (F) are explanatory diagrams of the joining process of band-shaped metal plates, Figure 4 is a perspective view showing the state cut with a cutter, and Figure 5 is a conventional FIG. 6 is a perspective view showing a cut state in another conventional method for joining band-shaped metal plates. DESCRIPTION OF SYMBOLS 10... Joining device main body, 1 22... Entry side clamp, 2 30... Rolling unit, 3 32... Cutting unit, 3 4... Joining unit, 6... Output side clamp, OA ...Rolling roller, 6... Leading band-shaped metal plate, 8... Trailing band-shaped metal plate.

Claims (2)

[Claims] (1) In the band metal plate joining method of welding and joining the leading band metal plate and the trailing band metal plate, the leading band metal plate is fixed, the trailing band metal plate is fixed, and the cutting unit is rotated by 5°. Cut the end of the leading metal strip diagonally by tilting it above the same angle as above, use the cutting unit to cut the end of the metal metal sheet trailing at the same angle as the metal sheet leading to the metal sheet, and operate the matching unit to cut the metal sheet leading to the metal sheet. The cutting parts of the metal plate and the trailing metal plate are butted or overlapped by a small amount and fixed, and the welding means is moved to the abutting part or the overlapped part by a small amount to weld the leading metal band and the metal plate to the trailing band. A method for joining band-shaped metal plates, characterized by joining, and then moving a rolling means to a welding position and rolling. (2) In a band-shaped metal plate joining device for welding and joining a leading band-shaped metal plate and a trailing band-shaped metal plate, a device main body, and a device disposed in the device body that connects the leading band-shaped metal plate and the trailing band-shaped metal plate. Move them a certain amount and butt their ends together,
or has a butting unit that can be fixed by overlapping a minute amount, and has a cutting unit that can cut the strip metal plate on the main body of the device, and a butt portion between the leading strip metal plate and the trailing strip metal plate, or a minute amount overlap. A joining device for band-shaped metal plates, characterized in that each unit is provided movably along the traveling direction of the band-shaped metal plates, including a joining unit that welds and joins the welded parts, and a rolling unit that rolls the welded joint part.