JP2005011748A - Manufacturing device of button type battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing device of a button type battery, whereby the peripheral rim part of a metallic cap can be inserted and fixed in an annular packing of a synthetic resin through a sealant with the cap kept in a normal position. <P>SOLUTION: This manufacturing device has a plurality of annular packing holding parts, and is provided with a disc-like table intermittently rotated, a cap positioning supply arm 5 disposed adjacently to the disc-like table and made horizontally rotatable and vertically movable, a cylindrical slide member 12 disposed on the arm so as to be vertically movable, a vacuum chip 15 made of a synthetic resin, which is fixed to the lower part of the cylindrical slide part and has a conical hole 13 in communication with the hollow part of the cylindrical slide member, an evacuating means 20 to evacuate the vacuum chip through the hollow part of the cylindrical slide member, and a chip energizing means 17 to energize the vacuum chip downward together with the cylindrical slide member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a button-type battery manufacturing apparatus, and more particularly to a button-type battery manufacturing apparatus for attaching and fixing a synthetic resin packing and a metal cap, which are parts of a button-type battery.
[0002]
[Prior art]
For example, a button type battery has a positive electrode mixture accommodated therein and a separator etc. disposed in the positive electrode can, and further functions as a negative electrode terminal. A metal cap in which the negative electrode material is accommodated is placed in the positive electrode can through a synthetic resin packing. It has a structure that is caulked and fixed in a liquid-tight manner.
[0003]
In manufacturing such a button-type battery, an annular packing made of synthetic resin having a stepped portion on the inner peripheral surface and a sealant applied to at least the inner peripheral surface, and a sealant applied to the outer surface of the outer peripheral portion. There is a step of preparing the metal cap and inserting and fixing the outer peripheral edge of the cap into the synthetic resin packing. That is, the cap and the annular packing are used for manufacturing a button-type battery in a state in which they are integrally fixed in advance.
[0004]
In order to insert and fix the cap into the annular packing, a manufacturing apparatus having the following structure is considered.
[0005]
That is, this manufacturing apparatus has a disk-like table that has a plurality of circular recesses for holding the annular packing in the upper part near the outer periphery and is rotated intermittently. A support member having a cylinder mechanism and a rotation mechanism is disposed adjacent to the disk-shaped table. The cap positioning supply arm is attached to the support member so as to be horizontally rotatable and vertically movable. The cylinders are fixed vertically near both ends of the arm. A vacuum pad having a trumpet shape is fixed to the lower end of each cylindrical body so as to communicate with the hollow portion of the cylindrical body. The vacuum pad is made of a flexible rubber so that the metal cap is not scratched during the vacuum chucking of the metal cap as will be described later. The vacuum pump is connected to the upper end of each cylindrical body through, for example, a hose.
[0006]
Next, the operation of inserting and fixing the cap to the annular packing by such a manufacturing apparatus will be described. An annular packing made of synthetic resin having a stepped portion on the inner peripheral surface and having a sealing agent applied to at least the inner peripheral surface is conveyed and held in the plurality of circular recesses of the disk-like table. Further, a rubber vacuum pad having a trumpet shape is evacuated by operating a vacuum pump, a metal cap is vacuum chucked on the pad, and a sealant is applied to the outer surface of the outer peripheral edge of the cap. The disk-shaped table is intermittently rotated to move the packing to a predetermined position, and an arm is rotated by a rotation mechanism of the support member, and the vacuum chucked cap at the vacuum pad at the lower end of the cylindrical body is used for the packing. Position directly above. The arm is lowered by the cylinder mechanism of the support member, the vacuum pad at the lower end of the cylindrical body is lowered to a predetermined position, the outer peripheral edge of the vacuum chucked cap is inserted into the packing of the disk-shaped table, The annular packing and the cap are fixed through the applied sealing material. The operation of the vacuum pump is stopped, the vacuum chuck of the cap by the vacuum pad is released, and the vacuum pad is raised to the original position together with the round and the cylinder by the cylinder mechanism of the support member. After the disk-shaped table is intermittently rotated, the annular packing and the cap fixed with the sealant are taken out from the disk-shaped table.
[0007]
[Problems to be solved by the invention]
However, in the manufacturing apparatus, a trumpet-shaped vacuum pad for vacuum chucking the cap is made of rubber and easily deformed by pressurization. When inserting into the vacuum pad, the vacuum pad is displaced and deformed, and the cap is inclined. As a result, there is a problem in that the metal cap 33 is inclined to the stepped portion 32 in the annular packing 31 and the outer peripheral edge portion is fixed due to the fixing of the sealing agent as shown in FIG.
[0008]
In addition, when the cap is vacuum chucked by a vacuum pad and inserted with excessive force into the annular packing, the vacuum pad is deformed and the lower end of the cylindrical body to which the vacuum pad is attached comes into contact with the cap. Cause scratches or deformation.
[0009]
In the present invention, a metal cap is inserted and fixed in a normal posture through a sealing agent in a synthetic resin annular packing, and further, the metal cap is damaged and deformed at the time of insertion and fixation. An object of the present invention is to provide a button-type battery manufacturing apparatus that can be avoided.
[0010]
[Means for Solving the Problems]
The button-type battery manufacturing apparatus according to the present invention inserts and fixes a metal cap in an annular packing made of synthetic resin having a step portion on the inner peripheral surface and having a sealant applied to at least the inner peripheral surface thereof. A button type battery manufacturing apparatus,
A disk-shaped table having a plurality of annular packing holding portions and rotated intermittently;
An arm for positioning and supplying a cap that is horizontally rotatable and can be moved up and down arranged adjacent to the disk-shaped table;
A cylindrical slide member disposed on the arm so as to be movable up and down;
For vacuuming the vacuum tip made of synthetic resin having a truncated cone hole fixed to the lower end of the cylindrical slide member and communicating with the hollow portion of the cylindrical slide member, and the vacuum tip through the hollow portion of the cylindrical slide member Vacuuming means of
A tip urging means for urging the vacuum tip downward together with the cylindrical slide member is provided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.
[0012]
FIG. 1 is a top view showing a button-type battery manufacturing apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the main part of FIG.
[0013]
1 in FIG. 1 is a disk-shaped table in which circular recesses 2 which are a plurality of (for example, eight) annular packing holding portions are formed concentrically and equiangularly (45 °) with respect to the center near the outer periphery. is there. The disk-like table 1 is rotated intermittently (a 45 ° circumferential angle), for example, clockwise by a drive shaft 3 of a motor (not shown). In the disk-like table 1, the annular packing made of synthetic resin is conveyed to the circular recess 2 at the left end position P1 by a conveying member (not shown). A metal cap, which will be described later, is inserted and fixed at a position P2 rotated 90 ° clockwise from the position P1. The annular packing with the metal cap inserted and fixed at a position (right end position) P3 rotated further 90 ° clockwise from P2 is taken out by a discharge member (not shown).
[0014]
A columnar support member 4 having a cylinder mechanism and a rotation mechanism (not shown) is disposed adjacent to the disk-shaped table 1. The two cap positioning supply arms 5 are attached so that their centers intersect the upper part of the support member 4 horizontally and can move up and down at right angles (cross shape). In addition, the rotation of the arms 5 intersecting in a cross shape by the columnar support member 4 is intermittently performed, for example, in a clockwise direction as shown in FIG. 1 at a circumferential angle of 90 °.
[0015]
As shown in FIG. 2, four cylindrical holders 8 having a through hole 6 at the center and screws 7 on the outer peripheral surface are inserted vertically near both ends of each arm 5. A pair of bolts 9 are respectively screwed onto the screws 7 from above and below to be fixed to the arms 5. Two bearings 10 are provided on the cylindrical holder 8 portion located on the inner surface of the through hole 6 so as to be spaced apart from each other. The cylindrical slide member 12 having the annular stopper portion 11 at the upper end is supported in the through holes 6 of the column holders 8 so as to be vertically movable. A synthetic resin vacuum chip 15 having a truncated cone hole 13 and a cylindrical hole 14 opened upward from the lower surface side is fitted into the lower end portion of each cylindrical slide member 12 through the cylindrical hole 14. The lower end surface of each cylindrical slide member 12 to which the vacuum tip 15 is fitted is located partway through the cylindrical hole 14, and the hollow portion 16 of each cylindrical slide member 12 passes through the cylindrical hole 14 to form the truncated cone shape. It communicates with the hole 13. As the synthetic resin, for example, polyacetal, nylon and the like are preferably used. The angle of the inclined surface of the frustoconical hole 13 (angle θ with respect to the perpendicular) is preferably 50 to 60 °.
[0016]
Coil springs 17 serving as tip urging means are respectively disposed on the cylindrical slide member 12 portions located between the column holders 8 and the vacuum tips 15, and the upper and lower ends of the coil springs 17 are respectively The cylinder holder 8 is in contact with the lower surface and the vacuum chip 15 upper surface. By these coil springs 17, the vacuum tip 15 is urged downward together with the cylindrical slide member 12.
[0017]
One end of the exhaust hose 18 is connected to the four annular stoppers 11 via a joint 19, and the other end of the exhaust hose 18 is connected to a vacuum pump 20 that is a vacuum evacuation means.
[0018]
Next, the operation of the above-described button-type battery manufacturing apparatus will be described with reference to FIGS. 1, 2, 3, and 4.
[0019]
An annular packing made of synthetic resin having a step portion on the inner peripheral surface and coated with a sealant on at least the inner peripheral surface thereof is conveyed to a circular recess 2 located at the left end P1 of the disk-like table 1 by a conveying member (not shown). , Keep it. At the same time, the disk-shaped table 1 is rotated intermittently (circumferential angle of 45 °), for example, clockwise by a drive shaft 3 of a motor (not shown) and is shown in a circular recess 2 moved to the left end P1 of the disk-shaped table 1. The annular packing with a sealant is sequentially conveyed by a conveying member that does not.
[0020]
On the other hand, in the two arms 5 intersecting in a cross shape shown in FIG. 1, the vacuum tip 15 at the lower end of the cylindrical slide member 12 becomes empty at the left end position L1 of the arm 5. At the end position L2 of the arm 5 rotated 90 ° clockwise from the left end position L1, a metal cap is inserted into the conical hole 13 of the vacuum tip 15 at the lower end of the cylindrical slide member 12 from below, and the vacuum pump 20 When the cap is surrounded by the cap through the exhaust hose 18, the joint portion 19, the hollow portion 16 of the cylindrical slide member 12 and the cylindrical hole 14 of the vacuum tip 15, the air in the conical hole 13 is evacuated to vacuum the vacuum. A metal cap is vacuum chucked on the chip 15. At the right end L3 of the arm rotated 90 ° in the clockwise direction from the position L2, a sealant is applied to the outer surface of the outer peripheral edge of the metal cap that has already been vacuum chucked to the vacuum tip 15.
[0021]
After such operations of the disk-shaped table 1, vacuum chucking of a metal cap by a vacuum chip 15 or the like connected to a cross-crossing arm 5, operation of applying a sealing agent, a rotation mechanism (not shown) of the cylindrical support member 4 is used. The arms 5 crossing in a cross shape are rotated clockwise at a circumferential angle of 90 °. At this time, as shown in FIG. 3, the metal cap 33, which has already been vacuum chucked by the vacuum tip 15 at the right end position L <b> 3 of the arm 5, It is positioned directly above the annular packing 31 with sealant that has already been conveyed and held in the recess 2 (P2 position). As shown in FIG. 3, the metal cap 33 is vacuum-chucked to the vacuum tip 15 with the curved shoulder of the cap 33 abutting against the inner surface of the frustoconical hole 13 of the vacuum tip 15.
[0022]
In such a state shown in FIG. 3, the cross-shaped arm 5 is lowered by a predetermined distance by a cylinder mechanism (not shown) of the columnar support member 4. When the arm 5 is lowered, the vacuum tip 15 at the lower end of the cylindrical slide member 12 supported by the column holder 8 of the arm 5 is also lowered, and the outer peripheral edge of the metal cap 33 vacuum-chucked to the vacuum tip 15 is The annular packing 31 held by the disk-like table 1 is inserted slightly below the normal position (the stepped portion 32 of the annular packing 31). At this time, when the coil spring 17 disposed on the cylindrical slide member 12 between the column holder 8 and the vacuum tip 15 is contracted, the vacuum tip 15 is raised, and the repulsive force of the coil spring 17 is vacuumed. The metal cap 33 is added through the chip 15. Further, since the vacuum tip 15 is made of a relatively hard synthetic resin such as polyacetal and hardly deforms, the repulsive force of the coil spring 17 is uniformly transmitted from the vacuum tip 15 to the metal cap 33. As a result, as shown in FIG. 4, the outer peripheral edge portion of the metal cap 33 is inserted in a normal posture without being inclined to the step portion 32 in the annular packing 31. In addition, since the lower end of the cylindrical slide member 12 is not brought into contact with the upper portion of the metal cap 33, generation of scratches on the cap 33 and deformation of the cap 33 are avoided.
[0023]
Further, when the metal cap 33 is inserted into the annular packing 31 by the vacuum tip 15, even if the cap 33 is slightly inclined, the coil spring 17 is contracted as described above, and the vacuum tip 15 is raised accordingly. The tilted posture of the cap 33 is adjusted. As a result, the outer peripheral edge portion of the cap 33 is inserted in a normal posture without being tilted to the stepped portion 32 in the annular packing 31 as shown in FIG.
[0024]
The vacuum pump 20 connected to the cylindrical slide member 12 positioned immediately above the position P2 of the circular recess 2 of the disk-like table 1 is stopped, the vacuum chuck of the cap 33 by the vacuum tip 15 is released, and The arm 5 is lifted together with the column holder 8 and the cylindrical slide member 12 to the original position by the cylinder mechanism of the columnar support member 4. The disk-like table 1 is intermittently rotated in the clockwise direction (circular angle of 45 °), and the annular packing and the cap fixed with the sealant at the right end position P3 of the disk-like table 1 shown in FIG. .
[0025]
Therefore, according to the embodiment of the present invention, the outer peripheral edge portion of the metal cap 33 can be inserted and fixed in a normal posture through the sealing agent to the step portion 32 in the annular packing 31 made of synthetic resin. It is possible to realize a button-type battery manufacturing apparatus capable of avoiding scratches and deformations on the metal cap 33 during insertion and fixation.
[0026]
In the above embodiment, the two arms are overlapped in a cross shape and fixed to the columnar support member so as to be rotatable up and down. However, one arm is fixed to the columnar support member so as to be rotatable up and down. Also good. In this case, the cylindrical holder or the like is fixed vertically near both ends of the one arm.
[0027]
In the embodiment, the sealing agent is applied to the inner peripheral surface of the annular packing made of synthetic resin. However, the entire annular packing may be applied in advance with the sealing agent in consideration of the assembly of the button type battery. In addition, regarding the application of the sealing agent to the outer peripheral edge of the metal cap, the application of the sealing agent may be omitted depending on the type of the button type battery.
[0028]
【The invention's effect】
As described in detail above, according to the button type battery manufacturing apparatus of the present invention, a metal cap is inserted and fixed in a normal posture through a sealing agent in an annular packing made of synthetic resin. It is possible to avoid occurrence of scratches and deformation on the metal cap at the time of fixing, and there are remarkable effects such as improvement in yield.
[Brief description of the drawings]
FIG. 1 is a top view showing a button type battery manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the main part of FIG.
FIG. 3 is a cross-sectional view of an essential part for explaining the operation of the button-type battery manufacturing apparatus showing one embodiment of the present invention.
FIG. 4 is a cross-sectional view of the main part for explaining the operation of the button-type battery manufacturing apparatus showing one embodiment of the present invention.
FIG. 5 is a cross-sectional view for explaining a problem when an outer peripheral edge portion of a cap is inserted and fixed to an annular packing by a conventional button type battery manufacturing apparatus;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Disk shaped table, 4 ... Cylindrical support member, 5 ... Arm for cap positioning supply, 8 ... Cylindrical holder, 12 ... Cylindrical slide member, 13 ... Frustum hole, 15 ... Synthetic resin vacuum chip, 17 ... Coil Spring, 20 ... vacuum pump, 31 ... annular packing made of synthetic resin, 32 ... stepped portion 32 ... metal cap.

Claims (1)

A button type battery manufacturing apparatus for inserting and fixing a metal cap in an annular packing made of synthetic resin having a stepped portion on an inner peripheral surface and having a sealing agent applied to at least the inner peripheral surface thereof,
A disk-shaped table having a plurality of annular packing holding portions and rotated intermittently;
An arm for positioning and supplying a cap that is horizontally rotatable and can be moved up and down arranged adjacent to the disk-shaped table;
A cylindrical slide member disposed on the arm so as to be movable up and down;
For vacuuming the vacuum tip made of synthetic resin having a truncated cone hole fixed to the lower end of the cylindrical slide member and communicating with the hollow portion of the cylindrical slide member, and the vacuum tip through the hollow portion of the cylindrical slide member Vacuuming means of
An apparatus for manufacturing a button-type battery, comprising: chip urging means for urging the vacuum chip downward together with the cylindrical slide member.

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