JP2002164046A - Electrode sheet cutting device for battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrode sheet cutting device for a battery capable of positioning an electrode sheet end face without damaging, improving the accuracy in cutting dimension and the quality, and cutting the electrode sheet with high yield. SOLUTION: Four work heads 40a-40d are arranged in symmetry of rotation on an outer peripheral edge part of a disc-shaped turn table 10, first positioning arms 50, 60 are mounted at both sides of each work head 40a-40d, and second positioning arms 70-80 are respectively mounted at an outer peripheral side of each work head 40a-40d. The first positioning arms 50, 60 are dog leg-shaped cranks and engaged with a positioning cam 30 mounted on a center of the turn table 10 to laterally position the electrode sheet 10 set in each work head, and the second positioning arms 70, 80 are engaged with the first positioning arms 50, 60 to vertically position the electrode sheet 100 set in each work head.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery manufacturing apparatus, and more particularly, to a battery electrode sheet cutting apparatus for cutting an electrode sheet.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for electronic devices such as mobile phones and notebook computers to be cordless, have higher performance, and be smaller and lighter. In order to meet this demand, it is required to improve the performance of a battery serving as a main power supply of an electronic device. Practical applications of nickel-metal hydride secondary batteries and lithium secondary batteries, which can have higher performance and higher capacity, as main power sources for these electronic devices are being promoted.

[0003] This nickel-hydrogen secondary battery or the like is generally wound or laminated by inserting a separator carrying an electrolytic solution (electrolyte) between a band-shaped (sheet-shaped) positive electrode and a negative electrode, and winding or laminating the electrode group. Is formed, and this electrode group is liquid-tightly sealed in a battery outer container.

In general, an electrode group of the secondary battery, for example, an electrode group of a nickel-metal hydride secondary battery, has a positive electrode having a positive electrode active material layer containing a nickel compound provided on a belt-shaped current collector. A negative electrode is formed by providing a negative electrode active material layer containing a hydrogen storage alloy on a belt-shaped current collector.

The above-mentioned sheet-like electrode is prepared by preparing an electrode active material in a paste-like or gel-like form on a sheet-like current collector,
This paste-like or gel-like active material is applied to a current collector, dried, subjected to a process such as pressure bonding and rolling, and then cut into a predetermined size to obtain an electrode sheet.

In the cutting step, a method called die cutting is widely used. In this method, a method for cutting an electrode sheet is a method in which a punching die is pressed against a metal plate slightly larger than a predetermined dimension to punch an electrode sheet having a predetermined dimension.

[0007]

The electrode sheet is an important part of the battery, and the cut dimensions and thickness of the electrode sheet cut to a predetermined size affect the amount of the active material carried on the electrode sheet. Greatly affects the electrical performance. Therefore, it is necessary to cut the electrode sheet to a predetermined size with high precision.

[0008] However, the conventional cutting method using die cutting has a problem that the yield of electrode sheets is low because the entire outer periphery of the original metal plate is discarded as scrap.

There is also known a cutting method in which a long electrode sheet is prepared and cut with a cutter or the like. In this cutting method, an end surface (cut surface) of the electrode sheet once cut is used as a contact member. Since the pressing is performed and positioning is performed with reference to this end face, there is a problem that the end face of the electrode sheet is damaged at the time of positioning, and hence the cut dimensions vary, thereby reducing the dimensional accuracy and the quality of the electrode sheet. .

The present invention has been made to solve the above-mentioned conventional problems. That is, the present invention provides a battery electrode sheet cutting device that can perform positioning without damaging an electrode sheet end face, has high cutting dimension accuracy and quality, and can cut an electrode sheet at a high yield. Aim.

[0011]

According to the present invention, there is provided a battery electrode sheet cutting apparatus according to the present invention, wherein a turntable which rotates intermittently around a rotating shaft, is loosely fitted on the rotating shaft, and is separately provided from the turntable. A rotating positioning cam, at least three work heads disposed on the periphery of the turntable and having a housing for the battery electrode sheet, and disposed on both sides of each work head of the turntable; A first positioning arm that engages with a positioning cam and positions a battery electrode sheet housed in the housing portion in a tangential direction of the turntable; and a first positioning arm that is arranged on an outer peripheral edge side of the work head; Engaged with the positioning arm of
A second positioning arm that positions the battery electrode sheet in a radial direction of the turntable; and a sheet loading mechanism that loads the battery electrode sheet into the work head at a first stop position of the turntable. A cutting die for cutting the battery electrode sheet held by the work head into a predetermined shape at a second stop position on the rotation direction downstream side of the first stop position of the turntable; A discharge mechanism for discharging the cut battery electrode sheet at a third stop position on the downstream side in the rotation direction of the second stop position.

In the above battery electrode sheet cutting apparatus,
As an example of the first positioning arm, an inner peripheral end that engages with the positioning cam, an outer peripheral end that extends along a side surface of the work head to an outer peripheral edge of the turntable, A "-"-shaped crank having a peripheral end and a fulcrum disposed between the outer peripheral end and the outer peripheral end is exemplified.

In the above battery electrode sheet cutting apparatus, the second positioning arm may include, as an example, a fulcrum disposed on an outer peripheral edge of the turntable outside the work head, and a turntable radius along the fulcrum. A linear lever provided with an operating portion that swings in a direction, and an engaging portion that is disposed between the fulcrum and the operating portion and that engages with the first positioning arm.

Further, in the above-mentioned battery electrode sheet cutting apparatus, each of the work heads is provided with a positioning block for positioning one end of the battery electrode sheet in the inside thereof in the radial direction of the turntable. It is desirable.

According to another aspect of the present invention, there is provided a battery sheet cutting apparatus for intermittently rotating a turntable around a rotation axis, wherein the turntable is loosely fitted on the rotation axis and corresponds to a first stop position of the turntable. A positioning cam having a radius-enlarged portion fixed at a position to be rotated, at least three work heads disposed on a peripheral edge of the turntable and having a housing portion for a battery electrode sheet, and each work head of the turntable Are disposed on both sides of the cam, and engage with the positioning cam,
A first positioning arm that positions the battery electrode sheet in a tangential direction of the turntable; and a first positioning arm that is disposed on an outer peripheral edge of the work head, engages with the first positioning arm, and engages with the first positioning arm. A second positioning arm for positioning the turntable in a radial direction, a sheet loading mechanism for loading a battery electrode sheet into the work head at a first stop position of the turntable, and the turntable. A cutting die for cutting the battery electrode sheet held by the work head into a predetermined shape at a second stop position on the rotation direction downstream side of the first stop position of the first stop position of the turntable; At the second stop position on the downstream side in the rotation direction of the stop position,
An unloading mechanism for unloading the cut battery electrode sheet.

In the battery electrode sheet cutting apparatus of the present invention,
The battery electrode sheet is positioned by the work head and sent to the cutting section, where the cutting section is used.Therefore, almost no scrap of the battery electrode sheet is generated, and the battery electrode sheet has a high yield. Can be manufactured.

Further, since the cutting section does not employ a method of pressing and positioning the end face (cut surface) of the battery electrode sheet to somewhere, the end surface (cut surface) of the battery electrode sheet may be damaged. In addition, a dimensional accuracy is high, and a high quality battery electrode sheet can be obtained.

[0018]

Embodiments of the present invention will be described below.

FIG. 1 is a plan view showing a schematic configuration of a battery electrode sheet cutting apparatus according to this embodiment, and FIG. 2 is a vertical sectional view of a turntable 10 according to this embodiment.

As shown in FIG. 1, in the battery electrode sheet cutting apparatus 1 according to the present embodiment, a substantially disk-shaped turntable 10 is provided at the center and surrounds the turntable 10. As described above, the supply unit 200, the cutting unit 300, and the extraction unit 400 are arranged concentrically with the turntable 10.
Are arranged.

A rotary shaft (not shown) is provided at the center of the turntable 10 and is rotatable about the rotary shaft. A drive system (not shown) in which a motor and a gear train are combined is engaged with the turntable 10. By operating this drive system via a control device (not shown), the turntable 10 is turned on in the figure. It rotates intermittently clockwise.

A rotary shaft is provided at the center of the turntable 10, and a positioning cam 30 is provided coaxially with the rotary shaft. As shown in FIG. 2, the positioning cam 30 has, for example, bearings 32, 33 between it and the rotating shaft.
, And is operated separately from the rotation of the turntable 10.

The positioning cam 30 is provided with, for example, an operating rod 31 tangentially to the operating rod 31.
By actuating No. 1, the positioning cam 30 swings.

A work head 40 is arranged on the periphery of the turntable 10. The work head 40 is connected to a battery electrode sheet 100 (hereinafter, referred to as an “electrode sheet”).
That. ), And specifically, is provided in the periphery of the turntable 10 in the shape of a through-hole having a rectangular section with a long side in the tangential direction of the turntable 10. The work head 40 is a single turntable 10
In the cutting apparatus according to the present embodiment, for example, four work heads 40a to 40d are arranged rotationally symmetrically with respect to the positioning cam 30 at an angle of 90 degrees to each other.

Next, the battery electrode sheet cut by the cutting apparatus according to this embodiment will be described. FIG. 3A is a plan view of the battery electrode sheet 100 cut by the cutting apparatus according to the present embodiment, and FIG.
0 is a side view.

As shown in FIG. 3A, the electrode sheet 100 includes a rectangular sheet main body 101 and a seam 102 disposed along the longitudinal edge 101a of the sheet main body 101. In the plan view, the seam portion 102 has a substantially “T” -shaped appearance in which the width of the seam portion 102 protrudes.

The sheet body 101 has a structure in which a porous sponge-like metal carrier is filled with an active material, and the carrier is pressed and pressed. The one side 101a is attached to one side 101a in the longitudinal direction of the short edge portion.
Weld a strip-shaped metal plate longer than the dimension
2 are formed.

FIGS. 4 to 6 are partially enlarged views of the periphery of the turntable 10 according to the present embodiment.

As shown in FIG. 4, in the turntable 10 according to the present embodiment, two sets of holding arms are arranged between the center positioning cam 30 and the peripheral work head 40 (40a). Has been established. One of them is Ku
The first positioning arms 50 and 60 of the U-shaped crank, and the other are linear second positioning arms 70 and 80.

The first positioning arm 50 is disposed so as to be rotatable about a fulcrum 52 fixed to the turntable 10 in a plane parallel to the plane of the drawing. The first positioning arm 50 is engaged with the positioning cam 30 via a roller 53 attached to an inner peripheral end 51 at the center of the turntable 10.

The other first positioning arm 60 is disposed so as to be rotatable about a fulcrum 62 fixed to the turntable 10 in a plane parallel to the plane of the drawing.

The first positioning arm 60 is located at the center end 6.
The first positioning arm 50 is engaged with the other first positioning arm 50 through a through hole 63 formed in the first through hole 63 and a shaft 54 that engages with the through hole 63.

A spring 56 is mounted between the first positioning arms 50 and 60, and the spring 56 is attached to the peripheral end 5 of the first positioning arm.
5, 65 are biasing towards each other.

When the first positioning arms 50 and 60 swing and the peripheral edges 55 and 65 approach each other, the electrode sheet 1
00, the left and right sides of the sheet body 101 are sandwiched between the peripheral edge portions 55 and 65 so that the turntable 10
Are positioned in the tangential direction.

Further, linear second positioning arms 70 and 80 are provided on the outer peripheral side of the peripheral edge portions 55 and 65 of the first positioning arms 50 and 60, respectively.

The second positioning arms 70 and 80 are arranged so as to be able to swing about a fulcrum 71 and 81 fixed to the turntable 10 in a direction substantially radial to the turntable 10 in a plane parallel to the paper surface. ing. Further, rollers 73,
The second positioning arms 70 and 80 are engaged with the first positioning arms 60 and 50 via the rollers 73 and 83, respectively. Further, springs 76 and 86 are provided between the inside (upper side in the figure) of the second positioning arms 70 and 80 and the upper surface of the turntable 10, respectively. These springs 76 and 86 are connected to the second positioning arms. 70, 80 are urged toward the positioning cam 30 side.

A pressing member 74 and a stopper 75 are respectively provided at the tip of the second positioning arms 70 and 80 on the swinging side and the portion of the turntable 10 facing the tip.
And a pressing member 84 and a stopper 85 are provided. When the second positioning arms 70 and 80 swing,
The pressing members 74 and 84 are connected to the seam portion 10 of the electrode sheet 100.
2 is pressed radially inward (upward in the figure) of the turntable 10.

The electrode sheet 100 pressed inward in the radial direction of the turntable 10 (upward in the figure) is applied to an abutting portion 91 of a positioning block 90 to be described later.
The upper end 101d of the turntable 10 abuts, whereby the turntable 10 is positioned in the radial direction (vertical direction in the figure).

Note that the stoppers 75 and 85 are
4 and 84 are stoppers for preventing the electrode sheet 100 from being pushed too far in the direction (upward in the figure) toward the rotation axis. When the second positioning arms 70 and 80 move to the tangential direction of the turntable 10, It is prevented from moving further in the direction toward the rotation axis (upward in the figure). The action of the stoppers 75 and 85 prevents the electrode sheet 100 from being strongly pressed by the abutting portion 91 of the positioning block 90 to damage the upper end of the electrode sheet 100 and prevent the entire electrode sheet 100 from being deformed.

A positioning block 90 is provided between the first positioning arms 60 and 50 on the positioning cam 30 side (inner peripheral side) of the work head 40a.

The electrode sheet 100 is accommodated in the work head 40 a in a state shown by a two-dot chain line in the figure, and the upper edge 101 d of the electrode sheet 100 contacts the abutting portion 91 of the positioning block 90. In this way, positioning is performed.

Next, the operation of the work head 40a will be described with reference to FIGS. 4 and 5 are partially enlarged views around the work head 40a of the turntable 10 according to the present embodiment.

In order to supply the electrode sheet 100 to the work head 40a, first, the operation rod 31 is operated to rotate the positioning cam 30 so that the projection (larger radius portion) 30a of the positioning cam 30 is moved to the first position. Positioning arm 5
The roller is moved to an angle at which it contacts the zero roller 53.

When the positioning cam 30 is further rotated while the projection 30a of the positioning cam 30 is in contact with the roller 53, the roller 53 in contact with the projection 30a is moved outward (in the outer peripheral side) in the radial direction of the turntable 10. Pressed. When the roller 53 is pushed, the first positioning arm 50 moves to the fulcrum 5.
2 and the peripheral edge 55 moves rightward in the figure. At the same time, the other first positioning arm 60
Also rotates about the fulcrum 62, and the peripheral edge 65 moves leftward in the figure. Thus, the first positioning arm 50
And 60 move in a direction away from each other, and the peripheral edge 55 and the peripheral edge 65 are opened, so that the electrode sheet 100 is larger than the dimension of the electrode sheet 100 in the longitudinal direction.

Further, the second positioning arms 70 and 80
The roller 53 is pushed and the first positioning arm 50,
When 60 moves in the direction in which the peripheral edge portions 55 and 65 open, the roller 83 engaged at the tip of the peripheral edge portion 55 is pushed, and as a result, the second positioning arm 80 rotates about the fulcrum 81. , The pressing member 84 moves radially outward of the turntable 10, and the pressing member 84 and the stopper 85 move.
And the distance between them increases.

Similarly, when the roller 53 is pushed and the first positioning arm 60 moves, the roller 73 engaged at the tip of the peripheral edge 65 is pushed, and as a result, the second positioning arm 70 is supported by the fulcrum 71. , The pressing member 74 moves radially outward of the turntable 10, and the distance between the pressing member 74 and the stopper 75 increases.

When the distance between the pressing member 84 and the stopper 85 and the distance between the pressing member 74 and the stopper 75 are widened, the seam portion 102 of the electrode sheet 100 is interposed between them.
At both ends 102a, 102b.

As described above, the first positioning arms 60 and 5
0, and while the second positioning arms 70 and 80 are open, the electrode sheet 100 is carried into the work head 40a, and the first positioning arms 60 and 50, the second positioning arms 70 and 80, and the positioning block 90. Is placed on the portion surrounded by
Is supplied.

Next, by operating the operation rod 31 in the opposite direction to the previous direction and rotating the positioning cam 30 in the opposite direction, the roller 53 moves in the direction approaching the positioning cam. Reference numeral 60 closes between the peripheral edge portions 55 and 65 and sandwiches the left and right sides of the electrode sheet 100. Also, the first positioning arm 5
When the second positioning arm 70, 80 moves in the closing direction, the second positioning arms 70, 80
The pressing members 74 and 84 move the seam portion 102 of the electrode sheet 100 to the turntable 1.
Press toward the center of 0 (upward in the figure). The pressed electrode sheet 100 is pushed upward in the figure, and the upper edge 10
The electrode sheet 100 is positioned in the up-down direction when 1 d hits the abutting portion 91 of the positioning block 90.

Next, an operation flow when the electrode sheet is cut using the battery electrode sheet cutting apparatus 1 according to the present embodiment will be described.

FIG. 7 is a flowchart showing a flow of an operation of cutting an electrode sheet using the battery electrode sheet cutting apparatus 1 according to the present embodiment. 8 to 13 are plan views showing the operating state of the battery electrode sheet cutting device.

This battery electrode sheet cutting device (hereinafter, referred to as “electrode sheet cutting device”)
It is called "cutting device". In order to cut the electrode sheet by using 1), first, a supply position (first stop position) 2 corresponding to the position of the turntable 10 at 6 o'clock (a position immediately below) in the figure.
With respect to the work head 40a at 00, the lever is opened so that the electrode sheet 100 can be carried in. That is, first, as shown in FIG.
0, 60 and the second positioning arms 70 and 80 are closed, and the operation rod 31 is operated to move the positioning cam 3.
0, the first positioning arms 50 and 51 and the second positioning arms 60 and 61 are driven to open them as shown in FIG. 9 (step 1).

In this state, the first positioning arm 50,
The 60 and the second positioning arms 70 and 80 are open larger than the vertical and horizontal dimensions of the sheet body 101 of the electrode sheet 100. Next, the electrode sheet carrying mechanism (not shown) is operated to carry the electrode sheet 100 into the work head 40 a, and the first positioning arms 50 and 60, the second positioning arms 70 and 80, and the abutting portion 91 of the positioning block 90. The electrode sheet 100 is set during (step 2).

When the loading of the electrode sheet 100 is completed, the operating rod 31 is moved in the direction opposite to the previous direction, and the positioning cam 30 is rotated in the opposite direction, so that the first position as shown in FIG.
The positioning arms 50 and 60 and the second positioning arms 70 and 80 are closed to position the electrode sheet 100 (step 3).

Next, the electrode sheet 100 is attached to the work head 40.
a, the turntable 10 is rotated 90 degrees clockwise in the figure (step 4), and the work head 40a is held while the electrode sheet 100 is held as shown in FIG.
Is set on the cutting die 301 disposed at the position of 9 o'clock in the drawing of the cutting device 1 (second stop position) (step 5).

As shown in FIGS. 2 and 6, the cutting die 301 is a cutting punch 302 having a “concave” type planar shape.
Are moved up and down in the direction of the rotation axis of the turntable 10, and when the cutting punch 302 moves up and down, the electrode sheet is moved along the dotted line AA shown in FIGS. 100 seam portion 102 and seat body 1
01 is cut.

After the work head 40 a holding the electrode sheet 100 is set on the cutting machine 301, the cutting machine 301
Operates, and the cutting punch 302 cuts the electrode sheet 100 (step 6). After this cutting, the electrode sheet 1
Although both ends of the seam portion 102 are loosely held between the pressing members 74 and 84 and the stoppers 84 and 85, they are removed by the movement of the cutting punch 302 and discharged outside the cutting device.

When the cutting of the electrode sheet 100 is completed, the turntable is rotated (step 7), and as shown in FIG. 12, the work head 40a is moved to the 12 o'clock position (third position).
(A stop position).

Next, a take-out device (not shown) accesses the work head 40a that has moved to the take-out section 400, holds the cut electrode sheet 100 held by the work head 40a, and carries it out of the cutting device 1. (Step 8).

At this time, the cut electrode sheet 100 is the first sheet.
Positioning arms 50 and 60, second positioning arm 7
0, 80, the electrode sheet 100 is unloaded without opening the first positioning arms 50, 60 and the second positioning arms 70, 80 when holding the electrode sheet 100 after the cutting device is cut. It is possible to do.

When the unloading of the cut electrode sheet 100 is completed, the turntable 10 is rotated to move the work head 40a to the position shown at 3 o'clock in FIG. 13 (step 9).

Next, it is determined whether the electrode sheet is held by the work head 40a and the cutting of the electrode sheet is continued (step 10). If the cutting is continued, the turntable is again rotated to rotate the work head 40a. Is moved to the position at 6 o'clock in the figure, and the operations in steps 1 to 10 are repeated. On the other hand, when not continuing, the operation is terminated as it is.

Although the above description focuses on the work head 40a, the same operation is actually performed on the other three work heads 40b to 40c, and each of them is executed with a delay of one step. .

Accordingly, the cutting die 301 performs the cutting operation four times while the turntable 10 makes one rotation, and
At 00, the four cut electrode sheets 100 are carried out.

As described in detail above, in the cutting apparatus 1 according to the present embodiment, the positioning of the electrode sheet is performed in the horizontal direction and the vertical direction using two sets of positioning levers. Can be accurately positioned.

Further, since the end surface (cut surface) of the electrode sheet is not brought into contact with another member or the like for positioning the electrode sheet, the cut surface is not deformed and a high quality electrode sheet can be obtained. Obtainable.

Further, since the end face (cut surface) of the electrode sheet is not brought into contact with another member or the like for positioning the electrode sheet, the electrode sheet itself is not deformed and is supported by the electrode sheet. The amount of the electrolyte composition does not fluctuate. Therefore, it is possible to provide a battery electrode sheet having uniform and stable charge / discharge characteristics.

Further, since a plurality of work heads 40 are provided on the turntable 10 and a plurality of electrode sheets are cut during one rotation of the turntable, the electrode sheets can be cut efficiently. Can be.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described. In the present embodiment,
A description of the same contents as in the first embodiment will be omitted.

In this embodiment, the positioning cam 30 is not rotated and is kept at the same position, and the first positioning arm and the second positioning arm are rotated as the turntable 10 rotates.
Is configured to open and close.

That is, the outer circumferential projection of the positioning cam 30 is fixed in a state where it always faces directly downward in FIG. 1, and the turntable 10 rotates while the roller of the first positioning arm follows the outer circumference.

Accordingly, with the rotation of the turntable 10, one work head 400 is moved to the supply section 20 just below in the figure.
When approaching 0, the first positioning arm and the second positioning arm are opened, and the electrode sheet is set. When the sheet passes through the supply section 200 and goes to the cutting section 300 on the left side in the figure, the first positioning arm and the second positioning arm are closed, and the electrode sheet 100 is positioned and fixed. Next, the first positioning arm and the second positioning arm are maintained in a closed state while the electrode sheet 100 is cut by the cutting unit 300 and further after the cut electrode sheet 100 is taken out by the extraction unit 400. Further, the turntable 10 rotates and the supply unit 2
When approaching 00, the first positioning arm and the second positioning arm are opened again, and the same operation as described above is continuously performed.

In the present embodiment, since the positioning cam 30 is not rotated, there are advantages that the structure of the apparatus can be simplified, the cost for driving the rotating rod, the equipment cost, and the maintenance and management can be simplified.

[0074]

According to the present invention, an electrode sheet for a battery can be positioned without damaging the end surface of the electrode sheet, and the accuracy and quality of the cut dimensions are high, and the electrode sheet can be cut at a high yield. An apparatus is provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of a battery electrode sheet cutting device according to a first embodiment.

FIG. 2 is a vertical sectional view of the turntable according to the first embodiment.

FIG. 3 is a plan view and a side view of a battery electrode sheet.

FIG. 4 is a partially enlarged view of the periphery of the turntable according to the embodiment.

FIG. 5 is a partially enlarged view of a periphery of the turntable according to the embodiment.

FIG. 6 is a partially enlarged view of the periphery of the turntable according to the embodiment.

FIG. 7 is a flowchart showing a flow of operation of the battery electrode sheet cutting device according to the first embodiment.

FIG. 8 is a plan view showing a flow of operation of the battery electrode sheet cutting device according to the first embodiment.

FIG. 9 is a plan view showing the flow of operation of the battery electrode sheet cutting device according to the first embodiment.

FIG. 10 is a plan view showing an operation flow of the battery electrode sheet cutting device according to the first embodiment.

FIG. 11 is a plan view showing an operation flow of the battery electrode sheet cutting device according to the first embodiment.

FIG. 12 is a plan view showing the flow of operation of the battery electrode sheet cutting device according to the first embodiment.

FIG. 13 is a plan view showing the flow of operation of the battery electrode sheet cutting device according to the first embodiment.

[Explanation of symbols]

10 turntable, 30 positioning cam, 40 work head, 50 first positioning arm, 60 first
Positioning arm, 70... Second positioning arm, 80
... Second positioning arm, 301 ... Cutting die, 90 ... Positioning block.

Claims (7)

[Claims] 1. A turntable that rotates intermittently around a rotation axis, a positioning cam that is loosely fitted on the rotation axis and rotates separately from the turntable, and is disposed on a peripheral edge of the turntable. And at least three work heads, each having a housing portion for a battery electrode sheet, provided on both sides of each work head of the turntable, engaged with the positioning cam, and housed in the housing portion. A first positioning arm that positions the electrode sheet for use in the tangential direction of the turntable; and a first positioning arm that is disposed on an outer peripheral edge side of the work head, engages with the first positioning arm, and A second positioning arm for positioning the turntable in a radial direction and a battery electrode sheet on the work head at a first stop position of the turntable; A sheet carrying mechanism for carrying in, and a cutting die for cutting the battery electrode sheet held by the work head into a predetermined shape at a second stop position on the rotation direction downstream side of the first stop position of the turntable. A battery electrode sheet cutting device, comprising: a mold; and an unloading mechanism that unloads the cut battery electrode sheet at a third stop position on the rotation direction downstream side of the second stop position of the turntable. 2. The battery electrode sheet cutting device according to claim 1, wherein the first positioning arm is provided along an inner peripheral end portion engaging with the positioning cam, and along a side surface of the work head. A く -shaped crank having an outer peripheral end extending to the outer peripheral edge of the turntable, and a fulcrum disposed between the inner peripheral end and the outer peripheral end. An apparatus for cutting an electrode sheet for a battery. 3. The electrode sheet cutting device for a battery according to claim 1, wherein the second positioning arm is provided at a fulcrum disposed on an outer periphery of a turntable outside the work head; An operating portion that swings in the radial direction of the turntable along the fulcrum, and is disposed between the fulcrum and the operating portion;
An electrode sheet cutting device for a battery, comprising: a linear lever provided with an engaging portion that engages with the positioning arm. 4. The battery electrode sheet cutting device according to claim 1, wherein each of the work heads has one end of the battery electrode sheet abutted inside thereof and a turntable. An electrode sheet cutting device for a battery, comprising a positioning block for positioning in a radial direction. 5. A turntable that rotates intermittently around a rotation axis, wherein the turntable is loosely fitted on the rotation axis, and a radius-enlarged portion is fixed at a position corresponding to a first stop position of the turntable. A positioning cam, at least three work heads disposed on the periphery of the turntable and having a battery electrode sheet accommodating part, disposed on both sides of each work head of the turntable; A first position for engaging and positioning the battery electrode sheet in a tangential direction of the turntable;
And a second positioning arm disposed on the outer peripheral side of the work head, engaging with the first positioning arm, and positioning the battery electrode sheet in the radial direction of the turntable. At a first stop position of the turntable, a sheet loading mechanism for loading the battery electrode sheet into the work head, and at a second stop position on the rotation direction downstream side of the first stop position of the turntable, A cutting die for cutting the battery electrode sheet held by the work head into a predetermined shape; and a cutting die at a second stop position on the rotation direction downstream side of the first stop position of the turntable. A battery electrode sheet cutting device, comprising: an unloading mechanism for unloading a battery electrode sheet. 6. The battery electrode sheet cutting device according to claim 5, wherein the first positioning arm is provided along an inner peripheral end portion engaging with the positioning cam and along a side surface of the work head. A く -shaped crank having an outer peripheral end extending to the outer peripheral edge of the turntable, and a fulcrum disposed between the inner peripheral end and the outer peripheral end. An apparatus for cutting an electrode sheet for a battery. 7. The battery electrode sheet cutting device according to claim 5, wherein the second positioning arm is provided at a fulcrum disposed on an outer periphery of a turntable outside the work head; A straight line, comprising: an operating portion that swings in the radial direction of the turntable along the fulcrum; and an engaging portion that is disposed between the fulcrum and the operating portion and engages with the first positioning arm. An electrode sheet cutting device for a battery, which is a lever.