JP3655469B2 - Method and apparatus for manufacturing cylindrical battery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for manufacturing a cylindrical battery such as an alkaline manganese dry battery, and more particularly to a method and apparatus for manufacturing a cylindrical battery in which a separator mounting method for separating a positive electrode agent and a negative electrode agent is improved. is there.
[0002]
[Prior art]
FIG. 5 shows a conventional configuration of an alkaline manganese battery that is an example of a cylindrical battery. The alkaline manganese dry battery 30 according to this conventional configuration includes a positive electrode mixture pellet 2 formed in a cylindrical shape in a battery case 1 formed in a bottomed cylindrical shape by forming a positive electrode protrusion 6 serving as a positive electrode terminal on a bottom surface. A cylindrical separator 35 is inserted inside, a bottom separator 36 is inserted at the bottom, and the negative electrode gelling agent 4 is stored at the center, and the opening end of the battery case 1 is sealed with the sealing plate 7. In addition, a negative electrode terminal 8 connected to the negative electrode gelling agent 4 via a negative electrode current collector rod 9 is provided.
[0003]
The mounting of the cylindrical separator 35 and the bottom separator 36 in the manufacturing process of the alkaline manganese battery 30 is performed by a manufacturing apparatus shown in FIG.
[0004]
In FIG. 6A, the battery transport jig 15 holding the battery case 1 is transported after the positive electrode mixture pellet 2 is stored in the previous step (not shown), and the core 33 of the cylindrical separator mounting device 32 is transported. Move directly under. The core 33 is formed such that the diameter below the stepped portion 38 is smaller than the diameter above it by an amount corresponding to the thickness of the cylindrical separator 35, and is supported so as to be able to rotate forward and backward and move up and down. When the separator base paper cut to a predetermined size is supplied to the gap between the core 33 and the winding guide 34, the core 33 is rotated in the forward direction so that the separator base paper is below the step portion 38 of the core 33. Wind. At this time, the winding roller 37 presses the separator base paper wound around the roller against the core 33 so as not to loosen the winding. In this way, the separator base paper is wound a predetermined number of times, whereby a cylindrical separator 35 is formed on the core 33 as shown in the figure.
[0005]
Next, as shown in FIG. 6B, the winding roller 37 is retracted from the core 33, the core 33 is lowered, the battery transport jig 15 is raised, and the cylindrical separator 35 is wound. The core 33 is inserted into the battery case 1. Since the cylindrical separator 35 inserted into the battery case 1 is released from the restraint by the winding guide 34, the winding diameter is widened by its own springback, and the cylindrical separator 35 is in close contact with the positive electrode mixture pellet 2. Further, the tip of the cylindrical separator 35 is wound in a hollow state in which the core 33 is not centered. When the cylindrical separator 35 is pushed by the stepped portion 38 and inserted into the battery case 1, It is pressed and squeezed inward, and the bending due to the squeezing is shaped flat by pressing the tip of the winding core 33, and the bottom 35a (see FIG. 5) is formed. The winding core 33 rotates in the reverse direction to disengage the cylindrical separator 35 and rises, and the battery transport jig 15 descends, so that the cylindrical separator 35 is mounted in the battery case 1.
[0006]
The battery case 1 to which the cylindrical separator 35 is mounted is transferred to the next step by the battery transfer jig 15 and moves below the bottom separator mounting device 39 as shown in FIG. When the bottom separator 36 prepared by cutting out into a circular shape is supplied onto the insertion guide hole 41, the bottom separator mounting device 39 lowers the insertion rod 40, and the battery transport jig 15 is lifted to raise the battery case 1. The opening end is brought into contact with the alignment portion 42 of the bottom separator mounting device 39. Since the insertion guide hole 41 is formed in a cylindrical shape having a diameter smaller than the diameter of the bottom separator 36, the peripheral portion of the bottom separator 36 which is pushed out by the insertion rod 40 and enters the insertion guide hole 41 rises and has a cross-sectional shape. As shown in FIG. 6D, the bottom separator 36 is inserted onto the bottom 35 a in which the end of the cylindrical separator 35 is narrowed by the lowering of the insertion rod 40.
[0007]
The battery case 1 that has undergone the insertion step of the cylindrical separator 35 and the insertion step of the bottom separator 36 is transported to the subsequent steps to be completed as the alkaline manganese dry battery 30.
[0008]
[Problems to be solved by the invention]
The battery configuration and the manufacturing configuration thereof in the above-described prior art have the following problems.
[0009]
(1) The end portion of the cylindrical separator 35 is squeezed inward to form a bottom portion 35a, and is insulated and isolated so as not to cause an internal short circuit between the negative electrode gelling agent 4 and the battery case 1.
[0010]
However, since the opening is formed at the center only by narrowing down, the opening is closed by disposing the bottom separator 36 on the bottom 35a in order to close the opening. In this separator configuration, the bottom 35a is thickened by a double structure with the bottom separator 36, with overlapping due to narrowing of the end of the cylindrical separator 35, and the negative electrode gelling agent 4 and the positive electrode mixture pellet 2 are formed into the cylindrical separator 35. As a result, a step is generated on the reaction surface facing through the electrode, and the amount of the negative electrode gelling agent is reduced, so that the required discharge performance cannot be obtained.
[0011]
(2) When the negative electrode gelling agent 4 expands due to overdischarge, the bottom of the negative electrode gelling agent 4 is overlapped by the narrowing of the end of the cylindrical separator 35 and is not easily deformed due to the double structure with the bottom separator 36. Since the expansion is received by the surface and the expansion cannot be released to the bottom side, the internal pressure accompanying the expansion is on the sealing plate 7 side, and the vent 7a provided on the sealing plate 7 may be broken. The vent 7a is provided to prevent the battery from bursting when the internal pressure is abnormally increased due to a wrong usage such as mixing old and new batteries, reverse loading, etc. It must be avoided that it breaks.
[0012]
(3) The bottom separator 36 disposed in contact with the negative electrode gelling agent 4 that easily flows when subjected to a strong impact or vibration is likely to be displaced with the flow of the negative electrode gelling agent. Are likely to cause an internal short circuit due to the displacement.
[0013]
(4) In the step of inserting the bottom separator 36, in order to take out the bottom separators 36 stacked by vacuum suction one by one in order to supply the bottom separator 36 cut out in advance to the bottom separator mounting device 39, a thin bottom separator 36 36 cannot be used, and this thickness promotes the deterioration of the discharge performance described in the above item (1).
[0014]
(5) Since the cylindrical separator 35 and the bottom separator 36 are mounted in separate processes, the number of processes increases, productivity decreases, and the manufacturing apparatus is increased in size.
[0015]
The present invention was devised to solve the above-described problems of the prior art, and provides a manufacturing method and apparatus for efficiently manufacturing a highly reliable cylindrical battery while improving battery performance. It is the purpose.
[0016]
[Means for Solving the Problems]
  The manufacturing method according to the first invention of the present application for achieving the above object is to insert a positive electrode mixture formed in a cylindrical shape into a battery case formed into a bottomed cylindrical shape, Manufactured by inserting a cylindrical separator formed in a cylindrical shape so as to be in contact with the inner peripheral surface, inserting a bottom separator at the bottom of the battery case, and introducing a negative electrode gelling agent into the central space surrounded by each separator In the method of manufacturing a cylindrical battery, the bottom separator is larger than the diameter of the cylindrical separator.squareFormed into a sheet of dimensions,A circular guide hole through which the cylindrical separator can pass is formed, and a holding space formed in a circular shape with an inner diameter equivalent to the diagonal length of the bottom separator is held above the guide hole to hold the bottom separator. The separator loading jig formed with a portion and the core around which the cylindrical separator is wound are used, and the separator loading jig, the winding core, and the battery case have the same central axis. Arranged on the axis line and held by the holding part of the separator loading jigTo the bottom separatorWound around the coreAttach the tip of the cylindrical separator to bring both separators togetherAfter passing through the guide holeBy inserting the separator into the battery case, both separators are disposed in the battery case so that the tip of the cylindrical separator is wrapped from the outside at the peripheral rising portion of the bottom separator.
[0017]
  According to this manufacturing method, since the bottom separator can be inserted into the battery case at the same time when the cylindrical separator is inserted, the process of inserting both separators can be integrated into one to improve production efficiency. Further, since the outer side of the front end portion of the cylindrical separator is disposed in the battery case so as to be wrapped by the peripheral rising portion of the bottom separator, the bottom separator is not displaced due to impact or vibration. Furthermore, since the bottom surface side of the negative electrode gelling agent is insulated from the battery case only by the bottom separator, the amount of the negative electrode gelling agent is increased and a step is generated on the reaction surface facing the positive electrode mixture. Therefore, the discharge performance can be improved. This bottom separator structure suppresses the occurrence of liquid leakage due to the expansion of the negative electrode gelling agent because the bottom separator is deformed so that the expansion of the negative electrode gelling agent due to overdischarge escapes to the space where the positive electrode protrusion is formed. can do.In addition, since the bottom separator is formed in a square shape, it can be cut into a square from a tape-shaped base paper formed in the width of one side of the square, and there is no material loss and no generation of chips. Can be configured easily.
[0018]
  This applicationThe manufacturing apparatus according to the second aspect of the invention has a cylindrical shape so as to be in contact with the inner peripheral surface of the positive electrode mixture after inserting the positive electrode mixture formed in a cylindrical shape into a battery case formed in a bottomed cylindrical shape. In the cylindrical battery manufacturing apparatus, the cylindrical separator formed on the battery case is inserted, the bottom separator is inserted into the bottom surface of the battery case, and the negative electrode gelling agent is introduced into the central space surrounded by each separator. A circular guide hole through which the cylindrical separator can pass is formed, and a cylindrical portion that fits into the open end of the battery case is formed at the lower portion of the guide hole, and the bottom separator is centered on the center of the bottom separator at the upper portion of the guide hole. And a separator loading jig formed with a holding portion that matches the diameter of the cylindrical separator and a diameter larger than the diameter of the cylindrical separatorsquareThe bottom separator supply means for supplying the bottom separator cut out to the dimensions into the holding portion of the separator loading jig, and the separator base paper is wound on the winding core to form a cylindrical separator, and this cylindrical separator is loaded into the separator. Separator mounting means for inserting into the battery case through the guide hole together with the bottom separator in the holding portion of the jig, and forming a separator loading jig to which the bottom separator is supplied from the bottom separator supply means, and a cylindrical separator The separator forming means core and the battery case in which the positive electrode mixture is inserted are positioned so that the central axes thereof coincide with each other on the same axis, and the cylindrical portion of the separator loading jig is positioned at the opening end of the battery case. The core is inserted and passed through the guide hole so that the core is inserted into the battery case. By returning to a tubular separator and bottom separator in the battery case is it configured to be mounted at the same timeThe holding portion of the separator loading jig includes a storage space formed in a circular shape having an inner diameter equivalent to the diagonal length of the bottom separator formed in a square shape, and a bottom portion formed in a square shape with an open top diameter of the storage space. And an insertion hole that is narrowed by an opening having a diameter smaller than the diagonal length of the separator.It is characterized by that.
[0019]
  According to this manufacturing apparatus, from the state in which the separator loading jig has the core of the separator mounting means and the battery case positioned in the up and down direction, the opening end of the battery case is fitted into the cylindrical portion of the separator loading jig. When the core around which the cylindrical separator is wound is advanced into the battery case through the holding portion of the separator loading jig and the guide hole, the cylindrical separator on the winding core is supplied into the holding portion.SquareSince the bottom separator is pushed out into the guide hole at its tip, the tip of the cylindrical separator is shaped so as to be wrapped by the peripheral rising portion of the bottom separator, and both separators are simultaneously inserted into the battery case. In addition, since the cylindrical separator wound around the winding core is inserted into the battery case from the guide hole through the cylindrical portion, the winding state does not loosen until it is inserted into the battery case. The winding state is loosened by the spring back, and it adheres to the positive electrode mixture that has been previously mounted, and is detached from the core. The cylindrical separator can be removed more effectively by rotating the winding core in the reverse direction of the winding direction. The winding core from which the cylindrical separator is detached moves backward, and the battery case is removed from the cylindrical portion of the separator loading jig. The installation of both separators is completed at the same time.In addition, the holding portion of the separator loading jig includes a storage space formed in a circular shape with an inner diameter equivalent to the diagonal length of the bottom separator formed in a square shape, and a bottom separator formed in a square shape with an open top diameter of the storage space Therefore, when the square bottom separator is inserted from the insertion hole into the receiving space, the square corner is deformed into the receiving space. The deformation of the corner portion is inserted and restored to a flat state since the diameter of the accommodation space is formed to be equal to the diagonal length of the square, and each corner portion is automatically positioned in contact with the inner peripheral surface of the accommodation space. The Further, the position of the separator is not displaced due to the vibration of the separator loading jig and the influence of wind, and the small and thin bottom separator can be held and positioned without using a vacuum suction means or the like.
[0020]
  In the above configuration, the bottom separator supply means is based on the base paper.SquareThe bottom separator is cut out in accordance with the operation of the separator mounting process by holding the cut out bottom separator immediately by vacuum suction and transferring it to the separator loading jig, so the bottom separator is vacuumed one by one. It becomes easy to transfer by adsorption. In the method of preparing a bottom separator that has been cut out in advance, it is difficult to manage a small, light and thin bottom separator, and it is difficult to reliably vacuum-suck only one sheet from the stacked state. By providing a bottom separator cutting device, it is possible to reduce processing steps for small parts that are difficult to handle.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention. In addition, elements common to the conventional configuration are denoted by the same reference numerals, and new elements according to the present invention are clarified.
[0024]
First, the configuration of an alkaline manganese battery (cylindrical battery) manufactured by the manufacturing apparatus according to the present embodiment will be described with reference to FIG.
[0025]
In FIG. 1, a battery case 1 is formed in a bottomed cylindrical shape having a positive electrode convex portion 6 as a positive electrode terminal on the bottom surface, and accommodates a positive electrode mixture pellet 2 formed in a cylindrical shape in contact with the inner peripheral surface thereof. The negative electrode gelling agent 4 is accommodated by being separated by the positive electrode material mixture pellet 2 and the cylindrical separator 3. On the bottom side of the cylindrical separator 3, a bottom separator 5 having a peripheral rising portion 5 a formed on the outer peripheral side thereof is disposed so that an internal short circuit does not occur between the negative electrode gelling agent 4 and the bottom surface of the battery case 1. Insulated and isolated.
[0026]
The open end of the battery case 1 is sealed by a sealing plate 7 and a negative electrode terminal 8 connected to a negative electrode gelling agent by a negative electrode current collector rod 9 is attached. The alkaline manganese dry battery 10 thus configured differs from the conventional configuration in the configuration of the cylindrical separator 3 and the bottom separator 5, and this configuration realizes an improvement in battery performance and reliability and an improvement in production efficiency. . The structure of the manufacturing apparatus which manufactures the alkaline manganese dry battery 10 comprised in this way is demonstrated below.
[0027]
2 and 3 show the configuration of the mounting process of the cylindrical separator 3 and the bottom separator 5 in the apparatus for manufacturing the alkaline manganese dry battery 10 according to the embodiment. Although the drawings are separated from each other in FIG. 2 and FIG. 3, each state of the manufacturing apparatus continuing from FIGS. 2A to 2C to FIGS. 3A to 3D is shown.
[0028]
In FIG. 2A, the bottom separator base paper 16 for producing the bottom separator 5 is formed as a hoop material having a thickness of 0.03 to 0.2 mm in which a nonwoven fabric is laminated on both sides of a cellophane, and is cut out at a cutting position. The bottom separator 5 is formed by being drawn out and punched into a square of a predetermined size by the Thomson die 17. The cut out bottom separator 5 is immediately sucked and held by the suction nozzle (bottom separator supply means) 18 and transferred to the separator loading jig 11 as shown in FIGS. Since the bottom separator 5 cut out from the bottom separator base paper 16 is immediately transferred by the suction nozzle 18, even the thin bottom separator 5 can be reliably held by the suction nozzle 18 one by one. Further, the bottom separator base paper 16 is formed in a tape shape having a width of one side of the bottom separator 5 formed in a square shape and cut into a square shape, so that no material loss occurs and no chips are generated. can do. Although the Thomson type 17 is shown as a reciprocating system, it can also be configured as a rotary Thomson type.
[0029]
As shown in FIG. 4, the separator loading jig 11 is formed with a circular guide hole 20 at the center, and a lower portion of the guide hole 20 is formed in a cylindrical portion 21 having a diameter that can be inserted into the opening end of the battery case 1. ing. Further, the guide hole 20 is formed with a diameter corresponding to the length of the diagonal line of the bottom separator 5 formed in a square shape and accommodates the bottom separator 5 in a planar state as shown in FIG. A holding portion 22 that forms an accommodation space is provided, and an upper portion thereof is provided with an insertion hole 23 that has an opening diameter that is smaller than the diagonal length of the bottom separator 5.
[0030]
When the bottom separator 5 held by the suction nozzle 18 is inserted into the holding portion 22 from the insertion hole 23, the square corner portion is deformed as shown in FIG. Since the corner portion with the deformed space height is formed to a dimension that can be restored, the guide hole 20 is closed and inserted into a flat state in the space of the holding portion 22, and the center of the guide hole 20 and the bottom separator 5 are inserted. It is held so that the center automatically matches. Further, since the insertion hole 23 is formed smaller than the inner diameter of the holding portion 22, even the small and light bottom separator 5 does not jump out of the holding portion 22 due to vibration or wind and is not displaced. Even when the separator loading jig 11 accommodated in the holding portion 22 moves, the state held at the predetermined position is maintained.
[0031]
The separator loading jig 11 on which the bottom separator 5 is transferred moves below the separator mounting device (separator mounting means) 12 as shown in FIG. In addition, the battery transport jig 15 holding the battery case 1 in which the positive electrode mixture pellets 2 are stored in the previous step (not shown) also moves below the separator loading jig 11. At this time, the central axes of the separator loading jig 11 and the battery case 1 are positioned so as to coincide with the central axis of the core 13 of the separator mounting device 12.
[0032]
The separator mounting device 12 is a winding in which a gap corresponding to the thickness of the cylindrical separator 3 is provided between a winding core 13 that is rotated in forward and reverse directions and the surface of the winding core 13. The guide 19 is configured to include a winding roller 14 that presses the roller against the cylindrical separator base paper wound around the winding core 13 so as not to cause loosening. As shown in FIG. 3 (d), the winding core 13 has a step 24 formed at the upper end of the winding portion 13a around which the cylindrical separator base paper is wound, and the thickness of the cylindrical separator 3 from the base portion 13b. The diameter is reduced by a difference corresponding to the thickness. Further, a bottom separator mounting portion 13c having a diameter smaller than that of the winding portion 13a is formed at the lower portion of the winding portion 13a by a difference corresponding to the thickness of the bottom separator 5.
[0033]
In FIG. 3A, when a cylindrical separator base paper cut to a predetermined size is supplied between the winding core 13 and the winding guide 19, the winding core 13 rotates in the winding direction and the winding roller 14 is pressed. Thus, the cylindrical separator 3 is formed on the core 13 by winding the cylindrical separator base paper a predetermined number of times into a cylindrical shape having a predetermined thickness.
[0034]
Next, the winding roller 14 is separated from the core 13 and the core 13 is lowered. At this time, as shown in FIG. 3 (b), the battery transport jig 15 is lifted so that the cylindrical portion 21 of the separator loading jig 11 is inserted into the opening end of the held battery case 1. The core 13 around which the cylindrical separator 3 is wound passes through the insertion hole 23 of the separator loading jig 11 and pushes the central portion of the bottom separator 5 held in the holding portion 22 at the tip thereof to guide the core. By advancing into the hole 20, the outer peripheral portion of the front end portion of the cylindrical separator 3 is wrapped in the peripheral portion of the bottom separator 5 and passes through the guide hole 20 and enters the battery case 1. Since the bottom separator mounting portion 13 c is formed at the tip of the core 13, the bottom portion of the cylindrical separator 3 passes through the guide hole 20 even if the peripheral portion of the bottom separator 5 is wrapped around the bottom portion. The tip and the other part wrapped by the separator 5 are shaped to the same diameter.
[0035]
Further, the cylindrical separator 3 wound around the winding core 13 is held by the winding guide 19 so as not to loosen the winding, and the tip portion enters the guide hole 20 of the separator loading jig 11 as it descends. Winding does not occur until the battery case 1 is inserted. The cylindrical separator 3 that has entered the battery case 1 is inserted until it is pushed by the step 24 of the core 13 and the bottom separator 5 comes into contact with the bottom surface of the battery case 1.
[0036]
As shown in FIG. 3C, when the core 13 is lowered to a position where the bottom separator 5 contacts the bottom surface of the battery case 1, the battery transport jig 15 holding the battery case 1 is lowered, and the core 13 is Ascending while rotating in the direction opposite to the winding direction. Due to the reverse rotation of the core 13 and the spring back of the cylindrical separator 3, the cylindrical separator 3 is detached from the core 13 and is in close contact with the inner peripheral surface of the positive electrode mixture pellet 2.
[0037]
As shown in FIG. 3D, when the core 13 is raised to the original position, the battery transport jig 15 transports the battery case 1 to which the cylindrical separator 3 and the bottom separator 5 are attached to the next process. Further, the separator loading jig 11 moves to the state shown in FIG. 2B and starts the transfer operation of the next bottom separator 5, and the separator mounting device 12 starts the winding operation of the cylindrical separator 3. .
[0038]
As described above, in the manufacturing apparatus, since the cylindrical separator 3 and the bottom separator 5 are simultaneously mounted in the battery case 1, the steps for inserting each separator can be integrated into one, Productivity can be improved and manufacturing equipment can be simplified by reducing man-hours.
[0039]
As shown in FIG. 1, the alkaline manganese battery 10 manufactured by the manufacturing apparatus is in a state in which the anode gelling agent 4 and the bottom surface of the battery case 1 are separated from each other by the thin bottom separator 5. While the volume which accommodates the gelatinizer 4 increases and the reaction area which the positive mix pellet 2 and the negative electrode gelatinizer 4 face increases, discharge performance can be improved.
[0040]
Further, since the bottom separator 5 is formed to be larger than the diameter of the cylindrical separator 3, when the cylindrical separator 3 is pushed into the guide hole 20 of the separator loading jig 11 in the manufacturing process, the periphery thereof is a cylinder. Rises on the outer periphery of the separator 3 and a peripheral rising portion 5a is formed. Since the peripheral rising portion 5a is attached by wrapping the lower part of the cylindrical separator 3 from its outer peripheral portion, even when a strong impact or vibration such as when the battery is dropped is applied, the positional deviation does not occur. Since the internal short circuit which the negative electrode gelatinizer 4 and the battery case 1 contact by position shift does not generate | occur | produce, the reliability of a battery can be improved.
[0041]
Furthermore, when the negative electrode gelling agent expands due to overdischarge, the bottom separator 5 formed flexibly with a thin material thickness expands into the space of the positive electrode convex portion 6 below and absorbs the expansion of the negative electrode gelling material 4. Therefore, leakage due to expansion of the negative electrode gelling material 4 is prevented, and a highly reliable battery can be configured.
[0042]
【The invention's effect】
  As described above, according to the present invention, the lower part of the cylindrical separator is provided from the outside.SquareSince the cylindrical separator and the bottom separator can be mounted at the same time in a state of being wrapped at the rising portion of the bottom separator, the separator mounting process can be integrated into one process, thereby improving productivity and simplifying the manufacturing apparatus. be able to. Moreover, the battery manufactured by this manufacturing method can increase the capacity of the negative electrode gelling agent and increase the reaction area by combining a thin bottom separator and a cylindrical separator that does not form a narrowed portion at the bottom. Therefore, the discharge performance can be improved, the bottom separator will not be displaced due to impact or vibration, and the expansion of the negative electrode gelling agent will not be absorbed to cause leakage or internal short circuit, thus constituting a highly reliable battery can do.
[Brief description of the drawings]
FIG. 1 is a 1/2 cross-sectional view showing a configuration of an alkaline manganese battery manufactured by a manufacturing apparatus according to an embodiment.
FIG. 2 is a process diagram showing a process procedure for supplying a bottom separator of the manufacturing apparatus according to the embodiment.
FIG. 3 is a process diagram showing a separator mounting process procedure of the manufacturing apparatus according to the embodiment.
4A is a plan view showing a configuration of a separator loading jig according to the embodiment, and FIG. 4B is a cross-sectional view taken along line AA.
FIG. 5 is a half cross-sectional view showing a configuration of an alkaline manganese dry battery according to a conventional configuration.
FIG. 6 is a process diagram showing a separator mounting process by a manufacturing apparatus according to a conventional configuration.
[Explanation of symbols]
1 Battery case
2 Positive mix pellet
3 Cylindrical separator
4 Negative electrode gelling agent
5 Bottom separator
6 Positive electrode protrusion
10 Alkaline manganese battery (cylindrical battery)
11 Separator loading jig
12 Separator mounting device
13 core
18 Adsorption nozzle (bottom separator supply means)
20 Guide hole
21 Cylindrical part
22 Holding part

Claims (4)

After inserting the cylindrical positive electrode mixture into the bottomed cylindrical battery case, insert the cylindrical separator formed in a cylindrical shape so as to contact the inner peripheral surface of this positive electrode mixture In addition, in the method of manufacturing a cylindrical battery manufactured by inserting a bottom separator into the bottom surface of the battery case and introducing a negative electrode gelling agent into the central space surrounded by each separator,
The bottom separator is formed into a sheet having a square size larger than the diameter of the cylindrical separator, a circular guide hole through which the cylindrical separator can pass is formed, and the diagonal length of the bottom separator is equivalent to the upper portion of the guide hole Using a separator loading jig having a holding space formed in a circular shape with an inner diameter and holding the bottom separator, and a core around which the cylindrical separator is wound, the separator loading jig is used. The tool, the winding core, and the battery case are arranged in a state in which their respective central axes coincide with each other on the same axis, and are wound around the winding core around the bottom separator held by the holding portion of the separator loading jig . by inserting the wound on cylindrical distal end portion of the separator is brought into contact with and the separators simultaneously in the battery case after passing through the guide hole, the periphery of the bottom separator Tip of the tubular separator rising portion so as to be wrapped from the outside, a manufacturing method of a cylindrical battery of the separators, characterized in that disposed in the battery case. After the positive electrode mixture formed in a cylindrical shape is inserted into a battery case formed in a bottomed cylindrical shape, a cylindrical separator formed in a cylindrical shape is inserted so as to contact the inner peripheral surface of the positive electrode mixture. In addition, in the cylindrical battery manufacturing apparatus in which a bottom separator is inserted into the bottom surface of the battery case, and a negative electrode gelling agent is introduced into a central space surrounded by each separator,
A circular guide hole through which the cylindrical separator can pass is formed on the central axis, and a cylindrical portion that fits into the opening end of the battery case is formed at the lower portion of the guide hole, and the bottom separator is formed at the center of the upper portion of the guide hole. A separator loading jig in which a holding portion is formed to hold it in alignment with the central axis;
A bottom separator supply means for supplying a bottom separator cut into a square dimension larger than the diameter of the cylindrical separator into the holding portion of the separator loading jig;
A separator mounting means for forming a cylindrical separator by winding a separator base paper on a winding core, and inserting the cylindrical separator into a battery case through a guide hole together with a bottom separator in a holding portion of the separator loading jig; ,
The central axis of the separator loading jig supplied with the bottom separator from the bottom separator supply means, the core of the separator forming means forming the cylindrical separator, and the battery case with the positive electrode mixture inserted are the same. Positioning in a state where they coincide with each other on the axis, the cylindrical portion of the separator loading jig is fitted into the opening end of the battery case, and the core that has passed through the guide hole is relatively moved so as to be inserted into the battery case. by returning to the positioned state, Ri name and tubular separator and bottom separator is configured to be mounted simultaneously in the battery case,
The holding portion of the separator loading jig includes a storage space formed in a circular shape with an inner diameter equivalent to the diagonal length of the bottom separator formed in a square shape, and a bottom separator formed in a square shape with an open top diameter of the storage space. An apparatus for manufacturing a cylindrical battery, comprising an insertion hole narrowed by an opening having a diameter smaller than the diagonal length . The cylindrical battery manufacturing apparatus according to claim 2, wherein the bottom separator supply means is configured to immediately hold the bottom separator cut out in a square shape from the base paper by vacuum suction and transfer it to the separator loading jig. The diameter of the winding part of the core around which the cylindrical separator is wound is formed smaller than the diameter of the core by an amount corresponding to the thickness of the cylindrical separator, and the bottom separator mounting part of the winding part is the bottom separator. 3. The cylindrical battery manufacturing apparatus according to claim 2, wherein the diameter is further reduced by an amount corresponding to the thickness of the cylindrical battery.

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