JPH0821377B2 - Device for supplying strip-shaped lithium thin film - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for supplying a strip-shaped lithium thin film, and particularly to a manufacturing apparatus for obtaining a lithium thin film piece used as a negative electrode of a non-aqueous solvent battery. The present invention relates to the improvement of a belt-shaped lithium thin film supply device.

[Prior Art] In recent years, a non-aqueous solvent battery using lithium as a negative electrode uses a non-aqueous electrolytic solution such as propylene carbonate or diethoxymethane, and therefore has better leakage resistance characteristics than a battery using an alkaline electrolytic solution. The long-term storage characteristic is excellent in the discharge characteristic of a minute current for a long time. For this reason, such a non-aqueous solvent battery is used as a power source for driving a display device such as a calculator or an IC card having a built-in IC and a memory backup thereof.

The non-aqueous solvent battery mentioned above has a diameter of 25 mm and a wall thickness of 3.5 m.
A coin type with a JIS name of CR type within m is generally used. The negative electrode of this type of coin-type non-aqueous solvent battery uses a lithium thin film, which is an extremely soft alkaline light metal. The lithium thin film used for this negative electrode has a width of 20-30
The thickness is generally 0.15 to 0.3 mm and the thickness of the thin rectangular lithium battery of 0.5 mm thickness that has been recently developed and commercialized uses an extremely thin lithium thin film. For example, for a 0.5 mm thick lithium battery, 0.06 to 0.01 m
The lithium thin film of m is used as the negative electrode. The thick lithium thin film is sent to a cutting device from a hoop on which the strip-shaped lithium thin film is wound, and cut into a predetermined size by this device or punched into a desired shape.

By the way, as a supply device for supplying the strip-shaped lithium thin film to the cutting device, conventionally, a gripper feeder system for supplying while sandwiched by finger parts opened and closed by an air band and a roll feeder system for supplying through a pair of rollers are provided. Are known.

[Problems to be Solved by the Invention] However, since the pressure is directly applied to the strip-shaped lithium thin film to be supplied in both the gripper feed method and the roll feeder method, a click occurs in a soft and ultrathin lithium thin film, There was a problem of being torn.

The present invention has been made in order to solve the problems of the prior art, a strip-shaped lithium thin film that can be smoothly supplied without cracking or tearing in the thin film. It is intended to provide a lithium thin film supply device.

[Means for Solving the Problems] A belt-shaped lithium thin film supply device according to the present invention includes a table, an upper stage rotating belt mechanism having an endless belt, a lower stage rotating belt mechanism having an endless belt, and the upper stage and the lower stage. A belt-shaped lithium feed roller mechanism for supplying a belt-shaped lithium thin film between the endless belts of the rotating belt mechanism, and the belt-shaped lithium thin film interposed between the endless belts of the upper and lower rotating belt mechanisms. A conveyor mechanism for rotating each endless belt, wherein the endless belt of the upper rotary belt mechanism is a table surface between rollers of a pair of brackets that are erected at a desired distance from each other on the table. The endless belt of the lower rotary belt mechanism is rotatably supported so as to be parallel to It is rotatably supported so as to face below the endless belt of the upper stage rotary bell mechanism between rollers of a pair of brackets that are erected at a distance, and one end side of the endless belt of the lower stage rotary belt mechanism is , Extending from one end of the endless belt of the upper rotary belt mechanism, the feed roller mechanism is hung above the extending portion of the endless belt of the lower rotary belt mechanism, each of the upper and lower rotary belt mechanism The transfer mechanism has a hoop around which a lithium thin film supplied between endless belts is wound, and the transport mechanism is a rotation belt mechanism of the upper stage and the lower stage from a direction perpendicular to the rotation direction of the endless belt of the upper stage rotation belt mechanism. At least one air hand having a pair of fingers that can be opened and closed sandwiching the upper and lower endless belts facing each other, and the air hand along the rotation direction of the endless belt. And a moving means for moving the feeding roller mechanism, the belt-shaped lithium thin film is supplied between the endless belts of the upper and lower rotary belt mechanisms from the hoop of the feed roller mechanism, and the pair of air hands of the transport mechanism are provided. By holding each of the endless belts in which the strip-shaped lithium thin film is interposed by the fingers of the finger and moving the air hand in the direction opposite to the feed roller mechanism by the moving means to rotate each of the endless belts. The strip-shaped lithium thin film is conveyed together with each of the endless belts.

[Operation] According to the supply device of the present invention, the strip-shaped lithium thin film is supplied from the hoop of the feed roller mechanism between the endless belts of the upper and lower rotary belt mechanisms, and is supplied to a pair of fingers of at least one air hand of the transport mechanism. The upper and lower stages of the belt-shaped lithium thin film interposing the opposing endless belts between the rotating belt mechanisms are sandwiched, and the fingers are moved along the rotation direction of the endless belts by the transport mechanism, whereby the fingers are moved from the hoops. The strip-shaped lithium thin film can be supplied smoothly without cracking or tearing.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described in detail with reference to Figs.

Reference numeral 1 in the figure is a table. On the table 1, first and second concave brackets 2 and 3 are erected at a predetermined distance from each other. Rollers 5a and 5b rotatably supported by shafts 4a and 4b are arranged near the upper portions of the first and second brackets 2 and 3. Roller 5
An endless belt portion 6 is pivotally supported between a and 5b. The shafts 4a and 4b, the rollers 5a and 5b, and the endless belt 6 constitute an upper rotary belt mechanism 7.

On the table 1, a third bracket 8 that is shorter than the first and second brackets 2 and 3 is provided.
It is erected on the right side of the bracket 3 at a desired distance. Rollers 10a and 10b rotatably supported by shafts 9a and 9b are disposed near the middle portion of the first bracket 2 and the upper portion of the third bracket 8. The roller
An endless belt 11 is pivotally supported between 10a and 10b. The endless belt 11 extends rightward from the right end of the endless belt 6 of the upper rotary belt mechanism 7. Axis 9 like this
A lower rotation belt mechanism 12 is constituted by a, 9b, rollers 10a, 10b, and endless belt 11.

Reference numeral 13 in the drawing denotes a transport mechanism, and the transport mechanism 13 includes a base plate 14 having four engaging portions 16 on the lower surface. The base plate
The engaging portions 16 of 14 are fitted to two guide shafts 15 which are two-dimensionally parallel to each other. Both ends of the guide shaft 15 are erected on the table 1 with a predetermined distance therebetween.
17a and 17b are respectively pivoted. The bed plate driving air cylinder 18 is arranged on the table 1. The air cylinder 18 is engaged with the base plate 14, and the endless belts 6 of the upper and lower rotating belt mechanisms 7 and 12,
It has a piston joint (not shown) which can advance and retreat in 11 rotation directions (arrow A and arrow B directions in FIG. 1). A base plate 14 having the engaging portion 16, a guide shaft 15, a support plate
17a and 17b and the base plate driving air cylinder 18 constitute a moving means of an air hand having a pair of fingers described later. By driving the air cylinder 18, the base plate 14 is moved along the two slide shafts 15 into which the engaging portions 16 are fitted, that is, the rotating direction of the endless belts 6 and 11 of the rotary belt mechanisms 7 and 12. And reciprocates in a region between the first and second brackets 2 and 3 in parallel with. Two support plates
19 is erected on the base plate 14. Each support plate 19
Covers 20 are respectively fixed to the opposite side surfaces of. Air hands 21 are provided in the cover 20, respectively. The two air hands 21 each have a structure shown in FIG. That is, the air hand 21 has an air cylinder 23 having a piston rod 22 that can move back and forth, a finger actuating tilt cam 24 attached to the tip of the piston 22, and a rear end located on the tilt cam 24 side.
A pair of openable and closable fingers 25a and 25b extending at the opposite endless belts 6 and 11 of the upper and lower rotary belt mechanisms 7 and 12 and a pivotal support at the rear ends of the pair of fingers 25a and 25b. And a shaft 26 that serves as a tilting fulcrum of the fingers 25a and 25b.
a, 26b, both side walls of the inclined cam 24 and the finger 25.
4 springs 27 between the side walls of a and 25b
It consists of a and 27b.

In the air hand 21 having such a structure, when the piston rod 22 is advanced by the air cylinder 23, the finger actuating inclined cam 24 at the tip of the piston rod 22 comes into contact with the facing surfaces of the pair of fingers 25a and 25b. ,
In order to press, the pair of fingers 25a and 25b are connected to the shaft 26.
The pair of fingers 25a, 25b are opened by tilting the tip sides away from each other around a, 26b. On the other hand, when the piston rod 22 is retracted by the air linder 23, the finger actuating inclined cam 24 at the tip of the piston rod 22 separates from the facing surface of the pair of fingers 25a and 25b, and the springs 27a and 27b are interposed. Force exerts on the rear end sides of the pair of fingers 25a, 25b, the pair of fingers 25a, 25b are tilted about the shafts 26a, 26b so that the front end sides of the fingers 25a, 25b are close to each other. 25a and 26b are closed.

The belt-shaped lithium thin film feed roller mechanism 28 is arranged close to above the right end extension of the lower rotary belt mechanism 12. The feed roller mechanism 28 includes an inverted concave holding bracket 29. A shaft 30 is provided in the holding bracket 29.
A bobbin 31 pivotally supported by is rotatably arranged. The winding core (not shown) of the bobbin 31 has a wall thickness of 0.09 m, for example.
A lithium hoop 32 is formed by winding a strip-shaped lithium thin film of m, width 26 mm, and length 20 mm. The holding bracket
29 is supported and fixed by a support arm 33.

Next, the operation of the belt-shaped lithium thin film supply device of the present invention will be described.

Step a; the belt-shaped lithium thin film 34 is slowly pulled out from the lithium hoop 32 wound around the bobbin 31 with the feed roller interval 28, and the belt-shaped lithium thin film 34 is at least the transport mechanism 13 and the upper rotary belt mechanism where the right air hand 21 is located. 7, the part between the endless belts 6 and 11 of the lower rotary belt mechanism 12 is supplied.

Step b; When the air cylinders 23 of the two air hands 21 in the transfer mechanism 13 are driven to retract the piston rod 22, as described above, the finger actuating tilt cams 24 at the tip of the piston rod 22 form a pair of fingers 25a. , 25b apart from the facing surface, the force pulling the rear end side of the pair of fingers 25a, 25b via the springs 27a, 27 acts, so that the pair of fingers 25a, 25b center on the shafts 26a, 26b. The pair of fingers 25a and 25b are closed by tilting so that the front ends thereof come close to each other. As a result, as shown in FIG. 3, the pair of fingers 25a, 25b clamp the opposing endless belts 6, 11 of the upper and lower rotary belt mechanisms 7, 12 respectively. At this time, a pair of fingers 25 of the right air hand 21
Since the strip-shaped lithium thin film 34 supplied from the hoop 32 is located between the opposing endless belts 6 and 11 of the upper and lower rotary belts 7 and 12 sandwiched by a and 25b, the strip-shaped lithium thin film 34 is also clamped together with the endless belts 6 and 11. In this state, the piston joint of the air cylinder 18 for driving the base plate of the transfer mechanism 13 is advanced to move the piston along the two slide shafts 15 engaged with the engaging portion 16 attached to the lower surface of the base plate. When it is moved in the direction opposite to the hoop 32 as shown by the arrow A in FIG. 1, the two air hands fixed via the two supports 19 and the cover which are erected on the base plate 14. 21 is moved in the same direction.
With the movement of the two air hands 21, the upper stage sandwiched by the pair of fingers 25a, 25b of each air hand 21,
The endless belts 6 and 11 of the lower rotation belts 7 and 12 rotate smoothly. That is, the upper endless belt 6 is rotated clockwise, and the lower endless belt 11 is rotated counterclockwise. As a result, since the strip-shaped lithium thin film 34 is located between the endless belts 6 and 11 sandwiched by the pair of fingers 25a and 25b of the air hand 21 on the right side of the tip side, the endless belts 6 and 11 together with the endless belts 6 and 11 are used. An arrow A shown in FIG. 1 corresponds to the length corresponding to the moving stroke of the air hand 21.
Is moved in the direction.

Step c; When the piston rod 22 is advanced by the air cylinder 23 of the two air hands 21, the finger actuating tilt cam 24 at the tip of the piston rod 22 comes into contact with the facing surface of the pair of fingers 25a and 25b as described above. In order to press, the pair of fingers 25a, 25b are tilted about the shafts 26a, 26b so that the front ends are separated from each other, and the pair of fingers 25a, 25b
a and 25b are opened. As a result, the pair of fingers 25
The nipping of the endless belts 6 and 11 of the upper and lower rotary belt mechanisms 7 and 12 and the band-shaped lithium thin film 34 interposed therebetween by the a and 25b is released.

Step d; the piston joint of the base plate driving air cylinder 18 is retracted, and the base plate 14 to which the two air hands 21 are fixed via the support 19 and the cover 20 is shown by an arrow B in FIG. Then, it is returned to the original position by moving it toward the hoop 32.

The step of supplying the strip-shaped lithium thin film 34 from the lithium hoop 32 wound around the bobbin 31 of the feed roller mechanism 28 (step a) is performed by the pair of fingers 25a and 25b of the two air hands 21 in the transfer mechanism 13. Air cylinders for sandwiching the strip-shaped lithium thin film 34 interposed between the endless belts 6 and 11 of the upper and lower rotary belt mechanisms 7 and 12 and the endless belts 6 and 11 and driving the base plate of the transport mechanism 13. A step of moving the base plate 14 to which the two air hands 21 are fixed in the direction of arrow A by 18 (step b);
Clamping release process (process c) by the pair of fingers 25a, 25b of one air hand 21, the base plate driving air cylinder
Base plate 14 to which the two air hands 21 by 18 are fixed
Of the lithium hoop wound around the bobbin 31 of the feed roller mechanism 28 by repeating a series of operations of moving in the direction of arrow B and returning to the original position (step d).
A strip-shaped lithium thin film 34 is supplied from 32 to a desired length and sent to, for example, a cutting device (not shown).

Therefore, according to the present invention, the strip-shaped lithium thin film 34 supplied from the lithium hoop 32 wound around the bobbin 31 of the feed roller mechanism 28 is provided between the upper and lower rotating belts 7, 12 facing the endless belts 6, 11 portions. And the nipping force between the pair of fingers 25a, 25b of the two air hands 21 in the transport mechanism 13 in this state, the nipping force of the pair of fingers 25a, 25b on both surfaces of the lithium ribbon thin film 34 is the lithium lithium. The upper layer arranged on both sides of the thin film 34,
Since the endless belts 6 and 11 of the lower rotating belt mechanisms 7 and 12 disperse, the nipping force of the pair of fingers 25a and 25b when the nipping is performed by the pair of fingers 25a and 25b is less than that of the lithium band lithium thin film 34. Avoiding intensive addition to both sides. As a result, the pair of fingers 25a and 25b of the two air hands 21 sandwich the opposing endless belts 6 and 11 of the upper and lower rotary belts 7 and 12 in which the strip-shaped lithium thin film 34 is interposed, The two air hands
By moving the base plate 14 of the transport mechanism 13 to which 21 is fixed, the strip-shaped lithium thin film 34 can be moved together with the endless belts 6 and 11 of the upper and lower rotary belt mechanisms 7 and 12, so that The strip-shaped lithium thin film 34 can be smoothly supplied to a predetermined cutting device side or the like without cracking or tearing of the strip-shaped lithium thin film 34.

Although an air cylinder is used as the means for reciprocating the base plate of the transport mechanism in the above-described embodiment, a ball screw rotated by a motor may be used instead of the air cylinder. In this case, the base plate is reciprocated by screwing an engaging portion fixed to the lower surface onto the ball screw.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to smoothly supply a soft strip-shaped lithium thin film to the next step such as a cutting device without causing cracks or tearing. It is possible to provide a device for supplying a strip-shaped lithium thin film.

[Brief description of drawings]

FIG. 1 is a front view of a belt-shaped lithium thin film supply device showing an embodiment of the present invention, FIG. 2 is a perspective view of a main part of the supply device of FIG. 1, and FIG. It is a perspective view showing the vicinity of a hand. 1 ... table, 6, 11 ... endless belt, 7 ... upper rotary belt mechanism, 12 ... lower rotary belt mechanism, 13 ... transport mechanism, 14 ... base plate, 15 ... slide shaft, 18 ... Air cylinder for base plate drive, 21 ... Air hand, 25a, 2
5b …… Fingers, 28 …… Feed roller mechanism, 31 …… Bobbins, 32 …… Lithium hoops, 34 …… Band-shaped lithium thin film.

Claims (1)

[Claims] 1. A belt-shaped lithium thin film is supplied between a table, an upper rotary belt mechanism having an endless belt, a lower rotary belt mechanism having an endless belt, and each of the endless belts of the upper and lower rotary belt mechanisms. A belt-shaped lithium feed roller mechanism, and a transport mechanism for rotating each of the endless belts with the belt-shaped lithium thin film interposed between the endless belts of the upper and lower rotating belt mechanisms, The endless belt of the upper stage rotating belt mechanism is rotatably supported so as to be parallel to the table surface between rollers of a pair of brackets which are erected on the table at a desired distance from each other. The endless belt of the belt mechanism rotates the upper stage between the rollers of a pair of brackets that are erected on the table at a desired distance from each other. Rotatably pivotally supported so as to face the lower side of the endless belt of Le mechanism, one end of the endless belt of the lower rotary belt mechanism,
Extending from one end of the endless belt of the upper rotary belt mechanism, the feed roller mechanism is hung above the extending portion of the endless belt of the lower rotary belt mechanism, each endless belt of the upper and lower rotary belt mechanism. The lithium thin film supplied between the belts has a hoop wound around, the transport mechanism, from the direction perpendicular to the endless belt rotation direction of the upper rotary belt mechanism of the upper and lower rotary belt mechanism At least one air hand having a pair of fingers that can be opened and closed to sandwich the upper and lower endless belts that face each other, and a moving unit that moves the air hand along the rotation direction of the endless belt are provided. The belt-shaped lithium thin film is supplied from the hoop between the endless belts of the upper and lower rotary belt mechanisms, and the air of the transport mechanism is supplied. The pair of fingers sandwiches each of the endless belts in which the strip-shaped lithium thin film is interposed, and the moving means moves the air hand in the direction opposite to the feed roller mechanism to rotate the endless belts. An apparatus for supplying a strip-shaped lithium thin film, wherein the strip-shaped lithium thin film is conveyed together with the endless belts by moving the strip-shaped lithium thin film.