JP2003191027A - Expanding method and expanding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expanding method in which a machined part is not broken in the vicinity of intersections of an expand lattice even when the height of the expand lattice is changed to a lower side. <P>SOLUTION: A die 17 and a cutter 15 for expanding a long strip 2, and a feeder to feed the strip 2 in the longitudinal direction in an interlocking manner to the vertical motion of the cutter 15 are provided, and the strip 2 is expanded between the die 17 and the cutter 15. Expanding is performed while the length La of a non-expanded portion 2b between an expanded portion 2a and an adjacent expanded portion 2a of the strip 2 is set to be not more than the length Lb of a horizontal portion 16a at a leading end of a trapezoidal blade tip of a blade 16 of the cutter 15. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expanding method and an expanding device for expanding a long strip.

[0002]

2. Description of the Related Art A slit is formed in a strip in a zigzag manner, and the slit is extended by extending the strip in a direction orthogonal to the line of the slit to form the strip in a mesh-shaped expanding lattice. A rotary method and a reciprocating method are known.

In the rotary system, slits are formed in a zigzag pattern on a strip, and then the strip is stretched in a direction orthogonal to a line of the slit to expand the slit to form a mesh. When the strip is pulled, an expanded grid is used. Since the force concentrates on the intersections of the meshes, the reciprocating method in which the mesh is formed by pushing in the extension direction by the thickness of the cutter when forming the slits to form the mesh is better in terms of battery performance.

Normally, the expanded grid for a lead-acid battery electrode plate adopts a method of simultaneously producing two grids on the left and right in the width direction of the strip, both in the rotary method and the reciprocating method.

FIG. 3 (A) is a side view showing a line configuration of an electrode plate manufacturing apparatus including a conventional reciprocating expander for simultaneously producing two grids on the left and right sides, and FIG. 3 (B) is a side view. FIG. 6 is a process diagram in which the electrode plate is manufactured by processing the strip with the electrode plate manufacturing apparatus in FIG.

In the figure, 1 is a strip feeder for feeding a strip 2, 3 is a strip feeding device 4 consisting of rollers, and the left and right portions of the strip 2 in the width direction are expanded by a reciprocating system to be expanded grid 5 An expander 6 is a shaper for processing a portion 7 sandwiched by the left and right expander grids 5 in the width direction to form a current collector terminal 8, 9 is a filling machine for filling the expander grid 5 with the paste 10, 11 Is the electrode plate 1 obtained by cutting the expanding grid 5 filled with the paste 10.
2 is a divider, 13 is a primary dryer for primary drying the electrode plates 12, and 14 is a stacker for stacking the primary dried electrode plates 12.

4 (A) to (F) and FIG. 5 (A) to
(F) is a schematic process drawing of the expanding process by the reciprocating expanding device 3. In the figure, reference numeral 15 is a cutter, and blades 16 having a triangular shape on the tip side are arranged in parallel at a predetermined pitch. The tip of the triangular blade 16 is a flat horizontal portion 16a. Reference numeral 17 is a die having a flat upper surface, and 2 is a long strip of lead or lead alloy which is placed on the upper surface of the die 17 and subjected to expansion processing by the cutter 15 and the die 17.

Here, FIGS. 4A to 4F show the cutter 1.
5 and the die 17 are deeply engaged, FIG.
(F) shows the expanding process step when the mesh between the cutter 15 and the die 17 is shallow.

4 (A) and 5 (A) show the strip 2 before processing. In this state, the cutter 15 goes up to the top dead center above the die 17 and stands by, and the strip 2 is supported on the upper surface of the die 17.

4 (B) and 5 (B) show a cutter 1
5 has shown the state which descended to the bottom dead center. In this process, each of the blades 16 makes a cut in the strip 2, and the horizontal portion 16a at the tip of each of the triangular blades 16 pushes down and extends one side portion along the cut to form the triangular processed portion 2
It is expanded as a and has a corrugated shape as a whole. This corrugated shape has a structure in which an unprocessed portion 2b exists between the processed portion 2a cut by the blade 16 and extended, and the processed portion 2a cut by the adjacent blade 16 and extended. Has become.

4 (C) and 5 (C) show a cutter 1
No. 5 has risen to the top dead center. In this step, the cutter 15 is used as in FIG. 4 (A) and FIG. 5 (A).
Is waiting up to the top dead center above the die 17.

FIG. 4D and FIG. 5D show the feeding device 4
By the operation of, the strip 2 is fed from the left side to the right side of the drawing until the cutter 15 is displaced by a half pitch from the state shown in FIGS.
Is in a state of protruding from the die 17 by the thickness of the blade 16 of the cutter 15 toward the front side of the drawing.

4 (E) and 5 (E) show a cutter 1
5 has shown the state which descended to the bottom dead center. In this step, in the same manner as described above, a cut is made in the strip 2 by each blade 16 and a horizontal portion 16a at the tip of each blade 16 pushes down a portion along the cut in a triangular shape to spread it, and as described above as a whole. The corrugated shape is shifted by a half pitch from the corrugated shape, and is expanded.

4 (F) and 5 (F) show a cutter 1
No. 5 has risen to the top dead center. In this step, as in FIGS. 4C and 5C, the cutter 15 is used.
Is waiting up to the top dead center above the die 17.

FIG. 6 shows a front view of the expanded lattice body 5'produced as described above and cut into a required shape. In FIG. 6, reference numeral 18 denotes an intersection (node portion) of the mesh of the expanded lattice body 5'formed by the unprocessed portion 2b.

4 (C) and 5 (C), the blades 16 of the cutter 15 are shown integrally for the sake of simplification of description, but in reality, the blades 16 are independent and the strip 2
In a state parallel to the length direction of the strip 2, the strips 2 are arranged in such a manner that they are inclined in an inverted C-shape from both end sides in the width direction to the center side and are sequentially displaced in the width direction. Every time the pitch is fed, the blades 16 collectively descend to cut the strip 2, and the portions along the cuts by the blades 16 are pushed down to form the triangular processed portions 2a, respectively.

In the expanding process by the reciprocating method as described above, the height direction of the electrode plate 5'is changed by changing the cutting depth of the cutter 15.

[0018]

However, in the expanding process by the reciprocating method as described above, when the height of the electrode plate 5'is changed to the lower direction, this is shown in FIG.
In the case of (A) to (F), when the state of FIG. 5 (D) is processed into the state of FIG. 5 (E), the processed portion 2a formed on the strip 2 and the adjacent processed portion 2a. Since the length of the unprocessed portion 2b between them is longer than the length of the horizontal portion 16a at the tip of the blade 16 of the cutter 15, at the time of the next processing by each blade 16 of the cutter 15 after feeding the strip 2,
A large tension acts on the unprocessed portion 2b having a long length, as shown in FIG.
As shown in (E), the processed portion 2a is broken and the broken portion 1
There was a problem that 9 occurred.

An object of the present invention is to provide an expanding processing method and an expanding processing apparatus in which the processed portion does not break near the intersection of the expanding lattice even when the height of the expanding lattice is changed to a lower direction. .

[0020]

SUMMARY OF THE INVENTION The present invention comprises a die and a cutter for expanding a long strip, and a feeding device for feeding the strip in the longitudinal direction in association with the vertical movement of the cutter. It is intended for an expanding method in which a strip is expanded between.

In the expanding method of the present invention, the length of the unprocessed part between the processed part formed on the strip and the adjacent processed part is determined by the length of the horizontal part of the tip of the cutting edge of the trapezoid of the cutter. Expanding is performed with a length equal to or less than S.

The length of the unprocessed part between the processed part and the adjacent processed part formed on the strip is equal to or less than the length of the horizontal part of the tip of the cutting edge of the trapezoid of the cutter. As a result, a large tensile force does not act during cutting and stretching by the trapezoidal blade edge of the cutter, and the processed portion does not break near the intersection of the expanding lattice.

In the expanding method of the present invention,
The length of the unprocessed part formed between the processed part and the next processed part formed on the strip by the feed of the feeding device is less than or equal to the length of the horizontal part of the tip of the cutting edge of the trapezoid of the cutter blade. .

The length of the unprocessed part between the processed part and the next processed part formed on the strip by the feeding of the feeding device is calculated as the length of the horizontal part of the tip of the cutting edge of the trapezoid of the cutter. When the length is not more than this, a large tensile force does not act at the time of cutting and expanding with the trapezoidal blade edge of the cutter, and the processed portion does not break near the intersection of the expanding lattice.

In these cases, the strip is preferably made of lead or lead alloy.

When the strip formed of lead or a lead alloy is subjected to the expanding process as described above, an expanded grid body for a lead storage battery can be easily manufactured.

Further, the present invention comprises a die and a cutter for expanding a long strip, and a feeding device for feeding the strip in the longitudinal direction in association with the vertical movement of the cutter, and the strip is provided between the die and the cutter. The expansion processing device that performs the expansion processing is targeted.

In the expanding device according to the present invention,
The length of the horizontal portion of the tip of the cutting edge of the trapezoid of the cutter is larger than the length of the unprocessed portion between the processed portion formed on the strip and the adjacent processed portion.

As described above, when the length of the horizontal portion of the tip of the blade edge of the trapezoidal shape of the cutter is made larger than the length of the unprocessed portion between the processed portion formed on the strip and the adjacent processed portion, the cutter A large pulling force does not act during cutting and spreading with the trapezoidal blade edge of
The machined part does not break near the intersection of the mesh.

Further, in the expanding apparatus according to the present invention, the length of the horizontal portion of the tip of the cutting edge of the cutter having a trapezoidal shape is determined by the feeding portion of the feeding device and the next processing portion. Greater than the length of the unprocessed part in between.

As described above, the length of the horizontal portion of the tip of the cutting edge of the cutter having the trapezoidal shape is defined as the length of the unprocessed portion between the processed portion formed on the strip by the feeding of the feeding device and the next processed portion. When it is larger than the above, a large tensile force does not act during cutting and stretching by the trapezoidal blade edge of the cutter, and the processed portion does not break near the intersection of the mesh.

In this case, the strip is preferably made of lead or lead alloy. By subjecting a strip made of lead or a lead alloy to an expanding process, an expanded grid body for a lead storage battery can be easily manufactured.

[0033]

1 and 2 show an example of an embodiment of an expanding method according to the present invention and an expanding apparatus for carrying out the method. FIG. 1 shows a cutter and a die engaged with each other. FIG. 2 is a front view showing a state in which the strip has been subjected to one step of expanding, and FIG. 2 is a front view of one trapezoidal blade of the cutter.

In the expanding method of this example, the length La of the unprocessed portion 2b between the processed portion 2a formed on the strip 2 made of lead or lead alloy and the adjacent processed portion 2a is set to the length of the cutter 15. Expanding is performed so that the length of the horizontal portion 16a at the tip of the trapezoidal edge of the blade 16 is equal to or less than the length Lb.

The length La of the unprocessed portion 2b between the processed portion 2a formed on the strip 2 and the adjacent processed portion 2a is determined by the horizontal portion of the tip of the trapezoidal edge of the blade 16 of the cutter 15. If the length Lb is equal to or less than the length Lb of 16a, a large tensile force will not act on the unprocessed portion 2b (intersection portion 18) at the time of cutting and spreading by the trapezoidal edge of the blade 16 of the cutter 15, and the expanding lattice 5 The processed portion 2a is not broken near the intersection 18.

More accurately expressing the state of the embodiment, in the expanding method of this example, the processed portion 2a formed on the strip 2 by the feeding of the feeding device 4 shown in FIG. 3 and the next processed portion 2a are formed. The length La of the unprocessed portion 2b between them is expanded so as to be equal to or less than the length Lb of the horizontal portion 16a at the tip of the trapezoidal blade edge of the cutter 15.

The processed portion 2a and the next processed portion 2a formed on the strip 2 by the feeding of the feeding device 4 in this way.
The length La of the unprocessed portion 2b between the horizontal portions 16a of the tip of the cutting edge of the blade 16 of the cutter 15 which is trapezoidal.
If the length is less than Lb, the blade 16 of the cutter 15
A large tensile force does not act on the unprocessed portion 2b (intersection 18) during cutting and stretching with the trapezoidal blade edge of
The processed portion 2a near the intersection 18 of the expanding lattice 5
Will not be broken.

In these cases, if the strip 2 is made of lead or a lead alloy and the strip 2 is subjected to the expanding process as described above, the expanded grid body 5'for a lead storage battery can be easily manufactured. You can

Further, in the expanding device of this example,
The length Lb of the horizontal portion 16a at the tip of the trapezoidal edge of the blade 16 of the cutter 15 is calculated from the length La of the unprocessed portion 2b between the processed portion 2a formed on the strip 2 and the adjacent processed portion 2a. Making it big.

As described above, the length Lb of the horizontal portion 16a at the tip of the cutting edge of the blade 16 of the cutter 15 which is trapezoidal.
Is larger than the length of the unprocessed portion 2b between the processed portion 2a formed on the strip 2 and the adjacent processed portion 2a, a large tensile force is exerted at the time of cutting and stretching by the trapezoidal edge of the blade 16 of the cutter 15. Does not act on the unprocessed portion 2b (intersection 18), and the processed portion 2a does not break near the intersection 18 of the expanding lattice 5.

To describe the state of the embodiment more accurately, in the expanding device of this example, the cutter 1
The length Lb of the horizontal portion 16a at the tip of the trapezoidal cutting edge of the blade 16 of No. 5 is such that the unprocessed portion 2b between the processed portion 2a formed on the strip 2 by the feeding of the feeding device 4 and the next processed portion 2a. Is larger than the length La.

Thus, the length La of the horizontal portion 16a at the tip of the trapezoidal blade edge of the cutter 15 is La.
The unprocessed part 2 between the processed part 2a formed on the strip 2 by the feeding of the feeding device 4 and the next processed part 2a.
When the length is larger than the length of b, a large tensile force does not act on the unprocessed portion 2b (intersection 18) at the time of cutting and spreading by the trapezoidal edge of the blade 16 of the cutter 15, and the intersection 18 of the expanding lattice 5 becomes larger. The processed portion 2a is not broken in the vicinity.

In these cases, if the strip 2 is made of lead or a lead alloy and the strip 2 is subjected to the expanding process as described above, the expanded grid body 5'for a lead storage battery can be easily manufactured. You can

Due to the above reason, even if the cutting depth of the working bottom dead center of the blade 16 is made shallow, the intersecting portion 18 does not cut.

[0045]

In the expanding method of the present invention, the length of the unprocessed part between the processed part formed on the strip and the adjacent processed part is determined by the horizontal part of the tip of the cutting edge of the trapezoid of the cutter. Since the length is equal to or less than the length, a large tensile force does not act at the time of cutting and expanding by the trapezoidal blade edge of the cutter, and the processed portion does not break near the intersection of the expanding lattice. For this reason, even if the cutting depth of the bottom dead center of the blade is made shallow, the intersection of the expanded lattice is not cut.

Further, in the expanding method of the present invention, the length of the unprocessed portion formed between the processed portion and the next processed portion formed on the strip by the feeding of the feeding device is defined by the cutting edge of the trapezoid of the cutter blade. Since the length is less than or equal to the length of the horizontal part of the tip at the tip, a large tensile force does not act during cutting and spreading with the trapezoidal edge of the cutter blade, and the processed part near the intersection of the expanding lattice It will not break. For this reason, even if the cutting depth of the bottom dead center of the blade is made shallow, the intersection of the expanded lattice is not cut.

In these cases, when the strip is made of lead or a lead alloy and subjected to the expanding process of the present invention, an expanded grid body for a lead storage battery can be easily manufactured.

In the expanding apparatus according to the present invention, the length of the horizontal portion of the tip of the cutting edge of the trapezoidal blade of the cutter is set to the unprocessed portion between the processed portion formed on the strip and the adjacent processed portion. Since the length is larger than the length of the portion, a large tensile force does not act at the time of cutting and spreading by the blade shape of the trapezoidal shape of the cutter, and the processed portion is not broken near the intersection of the mesh. For this reason, even if the cutting depth of the bottom dead center of the blade is made shallow, the intersection of the expanded lattice is not cut.

In the expanding apparatus according to the present invention, the length of the horizontal portion of the tip of the trapezoidal blade edge of the cutter is set to the value of the processing portion formed by the feeding of the feeding device and the next processing portion. Since it is larger than the length of the unprocessed part between, the large tensile force does not act at the time of cutting and spreading by the trapezoidal blade edge of the cutter, and the processed part does not break near the mesh intersection . For this reason, even if the cutting depth of the bottom dead center of the blade is made shallow, the intersection of the expanded lattice is not cut.

In these cases, when the strip is made of lead or a lead alloy, the expanded grid body for the lead storage battery can be easily manufactured by performing the expanding process with the expanding device of the present invention.

[Brief description of drawings]

FIG. 1 is a front view of an example of an embodiment of an expanding method according to the present invention, in which a cutter and a die are engaged with each other and a strip is subjected to one step of expanding.

FIG. 2 is a front view of one trapezoidal blade of a cutter in an example of an embodiment of an expanding method according to the present invention.

FIG. 3A is a side view showing a line configuration of an electrode plate manufacturing apparatus including a conventional reciprocating expander for simultaneously producing two grids on the left and right, and FIG. 3B is an electrode plate manufacturing apparatus of FIG. FIG. 6 is a process diagram in which a strip is processed by the device to manufacture a plate.

FIG. 4A to FIG. 4F are schematic process diagrams of an expanding process when a cutter and a die are deeply engaged with each other in a reciprocating expanding device.

5 (A) to 5 (F) are schematic process diagrams of an expanding process in the case where the cutter and the die are shallowly engaged with each other in the reciprocating expanding device.

FIG. 6 is a front view of an example of an expanded lattice.

[Explanation of symbols]

1 strip feeder 2 strips 2a Processing part 2b unprocessed part 3 Expanding processing device 4 feeder 5 Expanding lattice 5'expanded lattice 6 shaper 7 Part sandwiched between expanding lattices 8 collector terminals 9 filling machine 10 paste 11 dividers 12 plates 13 Primary dryer 14 Stacker 15 cutter 16 blades 16a horizontal part 17 dice 18 intersection 19 Break

Claims (6)

[Claims] 1. A die including a die for expanding a long strip, a cutter, and a feeding device for feeding the strip in a longitudinal direction in association with vertical movement of the cutter,
An expanding method for performing an expanding process on the strip between the die and the cutter, wherein a length of an unprocessed part between a processed part formed on the strip and an adjacent processed part is a blade of the cutter. Of the trapezoidal cutting edge having a length equal to or smaller than the length of the horizontal portion of the tip. 2. A die comprising a die for expanding a long strip, a cutter, and a feeding device for feeding the strip in a longitudinal direction in association with vertical movement of the cutter,
A method for expanding the strip between the die and the cutter, wherein the length of the unprocessed part between the processed part and the next processed part formed on the strip by the feeding of the feeding device. To
An expanding method in which the length is equal to or less than the length of the horizontal portion of the tip of the cutting edge of the trapezoid of the cutter. 3. The expanding method according to claim 1, wherein the strip is made of lead or lead alloy. 4. A die comprising a die for expanding a long strip, a cutter, and a feeding device for feeding the strip in a longitudinal direction in association with vertical movement of the cutter,
An expanding device for performing an expanding process on the strip between the die and the cutter, wherein a length of a horizontal portion of a tip of a blade edge of a trapezoid of the cutter is a processed portion formed on the strip. Expanding device that is larger than the length of the unprocessed part between and adjacent processed part. 5. A die and a cutter for expanding a long strip, and a feeding device for feeding the strip in a longitudinal direction in association with vertical movement of the cutter,
An expanding device for performing an expanding process on the strip between the die and the cutter, wherein a length of a horizontal portion of a tip end of a trapezoidal cutting edge of the cutter is determined by feeding the feeding device. An expanding machine having a length larger than the length of the unprocessed part formed between the processed part and the next processed part. 6. The expander according to claim 4, wherein the strip is made of lead or lead alloy.