JP2001286960A - Method and apparatus for embossing lath material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a flat part in a frame shape to a lath material lath-worked on a whole face by simply working and to easily handle the lath material in which the flat part is divided and is cut to a rectangular shape. SOLUTION: An apparatus is provided with a pair of upper/lower forming rolls 7 arranged at a downstream of a lath working apparatus which forms a metal sheet material S to a lath material S, a projecting line part 8 linearly formed on the outer peripheral face of the forming roll 7 in the peripheral direction 8a and the axial center direction 8b and a driving means 9 of the forming roll 7 to drive so that the projecting line parts 8 of the forming rolls 7 are set to the same phase in order to press-bond the lath material S and to work embossing to a flat part 10 of a frame shape along the projecting line 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing technique for lathing a metal sheet material, and more particularly to a method and an apparatus for embossing a lath material for embossing a lathed material. It is.

[0002]

2. Description of the Related Art Conventionally, porous metal plates have been used as electrode plates for nickel-metal hydride batteries, nickel cadmium batteries, lithium batteries, alkaline dry batteries, fuel cells, etc., and various batteries such as automobile batteries. ing. Various methods for manufacturing such a porous electrode plate have been proposed as described below. For example, there is a method of manufacturing a lath material (lath net) by unwinding a metal sheet material from an eye winder arranged at the uppermost stream of a manufacturing facility and forming a lath on the metal sheet material by a lath processing device. This lath processing apparatus arranges shear portions corresponding to the strand length in the outer peripheral direction of the rotary blade, and arranges the shear portions in a staggered manner in the axial direction to cut the sheet material. This is an apparatus for manufacturing a lath material by extending a tensile cut in a perpendicular direction (Japanese Patent Application Laid-Open No. H11-163,873).
0-106580).

[0003] The lath material provided with the cuts is further passed through a rolling mill and a sintering furnace, and then wound up by a winding device. After that, cut the lath material to an appropriate size with a cutter or the like,
Used as an electrode plate. Using this lath material as a core material, a mixture of a hydrogen storage alloy and an organic binder or the like is applied to both surfaces thereof to form an electrode plate.

[0004]

However, the plate-like lath material manufactured as described above has a lath net on its entire surface, and may be entangled with other lath materials due to peripheral burrs. In some cases, the handling was difficult.

When the lath material is used as an electrode material, the lath material is formed into a rectangular section in a later step, and a predetermined position of the lath material is pressed in another step in order to obtain a tongue portion of the electrode. There is a problem that the flat part must be formed by a forming roll.

The present invention has been made to solve such a problem. That is, an object of the present invention is to form a flat portion in a frame shape on a lath material that has been entirely lathed by performing a simple process, and to divide this flat portion,
An object of the present invention is to provide a method and an apparatus for embossing a lath material that can easily handle a lath material cut into a rectangle.

[0007]

According to the processing method of the present invention, a metal sheet material (S) is formed into a lath material (R) having a lath on the entire surface by using a lath processing device (2). next,
The lath material (R) is embossed using a forming roll (7) so that a frame-shaped flat portion (10) is compression-molded. . After embossing the lath material (R), the lath material (R) can be divided at the frame-shaped flat part (10).

In the above processing method, a lath material (R) having a lath is formed by using a forming roll (7) to form a frame-like flat portion (1).
Embossing can be easily performed so as to obtain a lath material (R) having 0). This lath material (R) is quickly and easily rolled as an electrode plate, that is, before cutting into a rectangle, by removing surrounding burrs and forming a tongue portion (T) of the electrode into a metal sheet (S). can do. Furthermore,
The lath material (R) after embossing can easily divide the flat part (10) whose lath is press-formed into a frame shape, and the lath materials (R) having the rectangular shape after the division Are not entangled.

According to the processing apparatus of the present invention, a pair of upper and lower forming rolls (7) provided downstream of a lath processing apparatus (2) for forming a metal sheet material (S) into a lath material (R).
A ridge (8) linearly formed in the circumferential direction (8a) and the axial direction (8b) on the outer peripheral surface of the forming roll (7);
In order to press-mold the lath material (R) and emboss the frame-shaped flat portion (10) along the ridge portion (8),
A driving means (9) for the forming roll (7) for driving the ridges (8) of the forming roll (7) to have the same phase during rotation. An embossing device is provided.

Downstream of the forming roll (7), a slitter (3) or a split shear (4) for dividing the flat portion (10) formed on the lath material (R) can be provided.

In the processing apparatus of the present invention, a circumferential direction (8a) formed on the outer peripheral surface of a pair of upper and lower forming rolls (7) is provided.
And a ridge (8) formed linearly in the axial direction (8b).
Have the same phase when the pair of upper and lower forming rolls (7) rotate. Therefore, the lath material (R) passing between the forming rolls (7) is press-formed with a lath between the protruding ridges (8), and a frame-like flat portion (R) is formed along the protruding ridge (8). 1
0) is molded. Particularly, by forming the flat portion (10) wide, the tongue portion (T) of the electrode material can be formed at the same time.

The thus-embossed lath material (R)
By dividing the flat portion (10) by a slitter (3) or a dividing shear (4), the tongue portion (T)
Can be easily formed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, common members are denoted by the same reference numerals, and duplicate description is omitted. FIG. 1 is a schematic view showing a method and an apparatus for embossing a lath material of the present invention. The lath embossing apparatus 1 of the present invention mainly includes a lath processing apparatus (lathing processing step) 2 for forming a lath net on the metal sheet material S, and a slitter 3 and a split shear 4 for dividing the lath material R. It is provided between them.

On the exit side of the lath processing device 2, rotatable feeder rolls 20 and 21 which convey while applying a tension to the forming roll 7 to be described later so as not to crush the lath net shape of the lath material R are provided. Is arranged. The feeder rolls 20 and 21 sandwich the lath material R between the transport rolls 20a and 21a that constantly transport the lath material R while being in contact with the lath material R. It is composed of
The elevating rolls 20b and 21b can be raised and lowered as necessary, and can be rotatably transported with the lath material R interposed between the transport rolls 20a and 21a, respectively.

As shown in FIG. 1, a lath processing apparatus 2 has a cylindrical rotary cutter 5 having shear blades corresponding to a lath shape arranged in a staggered manner in a circumferential direction and an axial direction, and driven to rotate.
And a fixed blade 6 that faces the rotary cutter 5 and shears the metal sheet S between the rotary cutter 5 and the rotary cutter 5.

According to the lath processing apparatus 2, since the shearing blades of the rotary cutter 5 are arranged in a staggered manner in the circumferential direction and the axial direction, a constant pitch is provided by a plurality of shearing blades arranged in a line in the axial direction. In this manner, the same shearing as that performed by offsetting with the next plurality of shearing blades arranged in a staggered manner can be performed. In this manner, the lath processing can be performed substantially continuously by merely rotating the rotary cutter 5 and shearing the metal sheet S between the rotary cutter 5 and the linear fixed blade 6.

FIG. 2 shows an embossing device. FIG. 2A shows a forming roll of the embossing device, a lath material before the embossing process on the left side thereof, and a lath material after the embossing process on the right side thereof. FIG. 4B is a plan view, FIG. 4B is a side view of the same, and FIG. The embossing apparatus 1 shown here is an apparatus mainly provided with a pair of upper and lower forming rolls 7 for embossing on a lath material R. The outer peripheral surface of each forming roll 7 has a circumferential direction 8a and an axial direction 8b.
Are formed with linearly formed ridges 8 respectively.
Since the ridges 8 are in the same phase when the forming roll 7 rotates, the lath material R passing between the forming rolls 7 rotated by the driving device (driving means) 9 has a narrow interval between the ridges 8. A lath is press-formed between the ridges,
A frame-shaped flat portion 10 is formed on a part of the lath material R along the line.

In the embossing apparatus 1 shown in FIG. 2, five ridges 8 are formed in the circumferential direction 8a in addition to the two ends 8c on one forming roll 7. Seven embossing processes can be simultaneously performed on the lath material R in the width direction to form seven flat portions 10 in the width direction. Therefore, by cutting this one lath material R at these flat portions 10 with the slitter 3 or the dividing shear 4, it can be divided into six rectangular electrode plates as shown in FIG. .

The embossing device 1 shown in FIG.
With one rotation of the forming roll 7, a frame-shaped flat portion 10 is formed on two lath materials R in the traveling direction. That is, the ridges 8 formed linearly in the axial direction 8b are formed on both ends of the forming roll 7 at 180 degrees in a direction continuous with the ridges 8 in the circumferential direction 8a. Thus, embossing for six sheets can be performed only by rotating the forming roll 7 by half.

FIG. 3 shows another embodiment of the embossing device according to the present invention, in which (a) shows a forming roll of the embossing device, a lath material before embossing on the left side thereof, and an embossing material on the right side thereof. It is a top view which shows the lath material after a processing process, (b) is a side view similarly, (c) is a top view which shows the lath material which carried out the emboss processing and was cut | disconnected by one sheet.
The embossing device 1 according to the embodiment of the present invention
One lath material R in the traveling direction by one rotation of the forming roll 11
Has a long flat portion 12 around the periphery thereof, and when used as an electrode plate, a tongue portion T has a wide flat portion 1 on one side.
The embossing process is performed so as to be molded as No. 2.

Further, in the embodiment of the present invention, the ridges 13 in the circumferential direction 13a formed on the outer peripheral surface of each forming roll 11 are not all formed to have the same width. In one forming roll 11, both ends 13 in the circumferential direction 13 a
In addition to the two protrusions c, four protrusions 13 are formed in the circumferential direction 13a, and a wider protrusion 13 in the circumferential direction 13d is formed for the tongue T. The flat portion 12 can be formed so as to have a different width from the lath material R.

The embossing device 1 shown in FIG.
The frame-shaped flat portion 12 is formed on one lath material R by one rotation of the forming roll 11. That is,
The ridges 13 formed on the forming roll 11 are formed linearly in the axial direction 13b, following the ridges 13 in the circumferential direction 13a.
Are formed at both ends of the circumference. Thus, one lath material R can be embossed for eight sheets by one rotation of the forming roll 11.

According to the processing method and the processing apparatus of the present invention,
Since the electrode plate having the final rectangular dimension can be formed from the metal sheet S by lathing, embossing and dividing in a short time, individual processing devices (processing steps)
And the processing steps are extremely simplified. In addition, the processing cost and operating cost are reduced,
The overall processing cost can be reduced.

The present invention is not limited to the above-described embodiment of the present invention. For example, the forms of the forming rolls 7 and 11 and the ridges 8 and 13 are not limited to the above-described embodiment of the present invention. It goes without saying that various changes can be made without departing from the spirit of the invention.

[0025]

As described above, the method and apparatus for embossing a lath material according to the present invention provide a frame-shaped flat portion obtained by press-forming laths using a forming roll having a ridge. It can be easily embossed to have. Before cutting this lath material into a rectangular shape as an electrode plate,
In the stage of the sheet-like lath material, the tongue portion of the electrode can be formed quickly and easily.

Further, since the embossing can be continuously performed immediately after the lath processing, the processing is extremely simplified, the equipment cost and operation cost are reduced, and the overall processing cost is reduced. be able to. In addition, there are excellent effects such as no burrs at the time of subsequent division and easy handling.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a lath material embossing method and apparatus of the present invention.

FIG. 2 shows an embossing device, wherein (a) is a plan view showing a forming roll of the embossing device, a lath material before the embossing process on the left side thereof, and a lath material after the embossing process on the right side thereof. (B) is a side view, and (c) is a plan view showing a lath material that has been embossed and cut into a single rectangle.

3A and 3B show another structure of the embossing device. FIG. 3A shows a forming roll of the embossing device, a lath material before the embossing process on the left side thereof, and a lath material after the embossing process on the right side thereof. (B) is a side view, and (c) is a plan view showing an embossing-processed lath material cut into one rectangle.

[Explanation of symbols]

 Reference Signs List 2 lath processing apparatus 7 forming roll 8 convex ridge 8a circumferential ridge 8b axial ridge 9 driving means 10 flat section 11 forming roll 12 flat section 13 convex ridge 13a circumferential ridge Part 13b Protrusions in the axial direction 13c Protrusions at both ends 13d Wide convexes in the circumferential direction 20 Feeder roll 20a Transport roll 20b Lifting roll 21 Feeder roll 21a Transport roll 21b Lifting roll S Metal sheet material R Lumber

Claims (5)

[Claims] 1. A metal sheet material (S) is formed into a lath material (R) having a lath on the entire surface by using a lath processing device (2), and then the lath material (R) is formed into a forming roll. An embossing method for a lath material, wherein embossing is performed so that a frame-shaped flat portion (10) is compression-molded using (7). 2. The lath material (R) according to claim 1, wherein after the lath material (R) is embossed, the lath material (R) is divided at a frame-shaped flat portion (10). Method. 3. A pair of upper and lower forming rolls (7) provided downstream of a lath processing device (2) for forming a metal sheet material (S) into a lath material (R), and an outer peripheral surface of the forming roll (7). Then, a ridge portion (8) linearly formed in the circumferential direction (8a) and the axial direction (8b) and the lath material (R) are compression-molded, and along the ridge portion (8). In order to emboss the frame-shaped flat portion (10), the ridge portion (8) of the forming roll (7) is used.
And a driving means (9) for driving the forming roll (7) so that the rollers have the same phase during rotation. 4. A slitter (3) for dividing a flat portion (10) formed on the lath material (R) is provided downstream of the forming roll (7). Lath material embossing equipment. 5. A split shear (4) for splitting a flat portion (10) formed on the lath material (R) is provided downstream of the forming roll (7). Lath embossing equipment.