JP2803282B2 - Foil supply device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foil supply apparatus for cutting an aluminum foil connected to a tab terminal with a lead wire into a predetermined size in a manufacturing process of an aluminum electrolytic capacitor.

2. Description of the Related Art In the manufacturing process of an aluminum electrolytic capacitor, an automatic machine is generally used to manufacture a capacitor element in which an anode foil and a cathode foil are wound through electrolytic paper. Are supplied in a hoop shape by connecting to a tab terminal, and are cut to a certain size in a winding step.

A conventional method in which an aluminum foil connected to a tab terminal is supplied to a hoop and cut into a certain size will be described below.

FIG. 3 is a schematic view of a process showing a foil supply method in a conventional winding process. In FIG. 3, reference numeral 1 denotes a core, 2 denotes a hoop wound around an electrolytic paper raw material 3, 4 denotes a hoop wound around a cathode foil raw material 5, 6 denotes a hoop wound around an anode foil raw material 7, 8 Is a chuck for extracting the electrolytic paper raw material 3, 9 is a chuck for extracting the cathode foil raw material 5, 10 is a chuck for extracting the anode foil raw material 7, 11 is an electrolytic paper cutter, 12 is a cathode foil cutter, 13 is an anode foil cutter.

The operation of the foil winding device configured as described above will be described below.

In FIG. 3 (a), the electrolytic paper raw material 3 wound on the electrolytic paper hoop 2 is pulled out from the broken line position A to the solid line position B by the chuck 8, and in this state, the core 1 projects and the electrolytic paper 3 Sandwich the middle part of. In this state, when the core 1 starts rotating as shown in FIG. 3 (b), the chuck 9 holding the cathode foil raw material 5 and the chuck 10 holding the anode foil raw material 7 move in the direction of the core 1. Then, the leading ends of the cathode foil raw material 5 and the anode foil raw material 7 are wound between the electrolytic paper raw material 3 and the core 1. In FIG. 3 (c), when the cathode foil raw material 5 and the anode foil raw material 7 are completely wound on the core 1, the chucks 9, 10 are opened and return to the original positions. Then, as shown in FIG.
Before the winding is completed, the chucks 9 and 10 are closed, cut with cutters 12 and 13, the raw material of electrolytic paper 3 is further cut with the cutter 11, and the end of the electrolytic paper 3 is fixed with an adhesive tape or fixed with an adhesive. In order to obtain a capacitor element, supply of a fixed size of aluminum foil is performed as a part of a winding step.

Problems to be Solved by the Invention However, in the above-described conventional configuration, productivity is extremely poor because of supply and cutting in a part of the winding step.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a foil supply device with improved productivity and high cutting accuracy.

Means for Solving the Problems In order to solve this problem, the foil supply device of the present invention includes an intermittently-moving rotary table provided with a vacuum suction hole for holding on the outer periphery, a detector for detecting lead wires, And a rotating roller driven by a motor for correcting the position of the lead wire.

Operation With this configuration, it is possible to continuously supply and cut the aluminum foil to which the tab terminals are connected, so that productivity can be improved and cutting dimensional accuracy can be improved.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the overall configuration of a foil supply apparatus according to an embodiment of the present invention.

In FIG. 1, 15 is a main body, and this main body 15 has a power shaft.
16 is incorporated and power is obtained from the power shaft 16. A bevel gear 17 is attached to the power shaft 16, and the power of the power shaft 16 is transmitted to a barrel cam 20 via a bevel gear 18 and a shaft 19 that mesh with the bevel gear 17, and a barrel table 21 is mounted on the barrel cam 20. The barrel table 21 transmits power via a rotary shaft 22 to a rotary table 23 on the main body 15. 24 is a cam mounted on the upper power shaft 16, 25 is a retraction roller, 26 is a dancer roller,
27 is a supply roller, 28 is a photoelectric tube for lead detection, 29 is a cutter, 30 is an electrode foil, 31 is a lead wire, and 32 is a pressing roller.

The operation of the foil supply device configured as described above will be described below.

The electrode foil 30 is held on the rotary table 23 by vacuum suction holes provided on the outer periphery, and is supplied from the same hoop as the conventional example via various rollers. The rotary table 23 performs an intermittent rotary motion by rotating a barrel cam 20 via rotary bevel gears 17 and 18 of a power shaft 16 driven by a motor such as a motor. The pull-back roller 25 is driven by a motor (not shown) and serves to make the cutting dimension of the electrode foil 30 constant. After the rotation of the rotary table 23, the pressing roller 32 is pressed against the pull-back roller 25 by cam driving to pinch the electrode foil 30, and the electrode foil 30 is pulled back by rotating the motor in the direction of the arrow. The amount of retraction is determined by detecting the lead wire 31 by the lead wire detection photoelectric tube 28 and stopping the rotation of the motor. The supply roller 27 is for unwinding and supplying the electrode foil 30 continuously, and the dancer roller 26 is for absorbing the difference between the forward and backward movements. Cutter 29,
The cam 24 moves up and down, and the rotary table 23 rotates.
Cut 30.

Next, how the electrode foil 30 is supplied will be described with reference to FIG. Points A and B indicated by the two-dot chain points are the positions of the lead wire detecting photoelectric tube 28 and the cutter 29, respectively. FIG. 2A shows a state in which the electrode foil 30 is set on the rotary table 23, and is held by vacuum suction. FIG. 2B shows a state in which the rotary table 23 has been rotated and stopped by a fixed amount from this state. When the rotary table 23 is stopped, the electrode foil 30 is pulled back by the pull-back roller 25 as shown by the arrow, and the position of the lead wire 31 is determined. The state is shown in FIG.
Is the lead 31 at the position A by the lead detection photoelectric tube 28.
Motor-driven rotation until is detected. By repeating the above operation, the state shown in FIGS. 2 (d), (e), and (f) is obtained. In the state (f), the electrode foil cut to a certain size is supplied by exchange of vacuum suction. can do.

Effect of the Invention As described above, the present invention provides an intermittently moving rotary table provided with a vacuum suction hole for holding a strip-shaped foil provided with a lead wire on the outer periphery, a detector for detecting a lead wire, and a lead wire position. By providing a motor driven pull-back roller for correction and a cutter to cut the positioned foil, it is possible to continuously supply and cut aluminum foil, which can improve productivity and lead every time. By detecting and correcting the line position, it is possible to realize an excellent foil supply device capable of improving the cutting dimensional accuracy.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a foil supply device in one embodiment of the present invention, FIG. 2 is a process diagram of the foil supply device in an embodiment of the present invention, and FIG. 3 is a process diagram of a conventional foil supply. 16 ... power shaft, 17 ... bevel gear, 18 ... bevel gear,
19 ... camshaft, 20 ... barrel cam, 21 ... barrel table, 22 ... rotating shaft, 23 ... rotary table, 24 ... cam,
25… Retraction roller, 26… Dancer roller, 27…
Supply roller, 28: Lead detection photoelectric tube, 29: Cutter, 30: Electrode foil, 31: Lead wire, 32: Holding roller.

Claims (1)

(57) [Claims] An intermittent rotary table having a vacuum suction hole for holding a strip-shaped foil provided with a lead wire on the outer periphery;
A foil supply device including a detector for detecting lead wires arranged at a part of the periphery of the rotary table, a pull-back roller driven by a motor for correcting lead wire positions, and a cutter for cutting the positioned foil. .