JPS6210992Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an ultra-small induction type capacitor winding device. More specifically, this invention consists of capacitor electrode foil with a constant foil width and tabs for attaching lead wires in a direction perpendicular to the foil width. An induction type capacitor winding device is constructed to cut the electrode foil piece at right angles to this, move the cut electrode foil piece with this tab along the perpendicular direction, and wind up the electrode foil piece. Related.

In an example of a conventional induction type capacitor winding device, as illustrated in FIG. Then, the electrode foil 2 is cut in a direction perpendicular to the foil width W using a cutting blade 3 at right angles to this direction for each variable length L required to obtain a predetermined capacitor capacity. Before this cutting process, the tab 4 for attaching the lead wire is moved onto the electrode foil 2 along the tab supply direction t, and is fixed approximately in the middle of the length L by arbitrary means. The electrode foil 2 to which the tab 4 is fixed is a rolled body 5 formed by overlapping several sheets of paper or plastic film, for example.
The core 6 is wound between the layers in the core rotation direction r. For capacitors obtained using a winding device that uses this method, if the foil width W is set to one narrow value, the capacitor capacity is uniquely determined according to the length L, so the capacitance is adjusted according to the length L. The range that can be obtained is limited, and furthermore, if the foil width W is set to another extremely narrow width, the following disadvantages will occur.

1. When cutting the electrode foil 2 to a determined length L and winding it around the winding core 6, the foil width W is set to an extremely narrow width, which tends to cause the electrode foil 2 to elongate along the direction. , the linearity of the electrode foil 2 deteriorates, and the cutting device and winding device become complicated in order to wind it correctly.

2. When fixing the tab 4, alignment in the direction of the foil width W becomes difficult due to the deterioration of linearity as described above.

3 Furthermore, if the cutting length L of the electrode foil 2 is extremely short, the device that cuts the electrode foil 2 and the device that winds up the cut electrode foil 2 will be very close to each other. It becomes almost impossible to freely select the location where the mechanism for cutting the foil 2 accurately is provided.

This invention eliminates the disadvantages shown in the above disadvantages, and the electrode foil is cut so that the capacitance of the capacitor can be set relatively freely.Before this cutting, a tab for attaching the lead wire is fixed to the electrode foil. and,
The purpose of this invention is to obtain an induction type capacitor winding device in which the tab is fixed and the cut electrode foil piece is moved in a direction perpendicular to the direction in which the electrode foil is fed out and wound up between the layers of the winding body.

An embodiment of the induction type capacitor winding device of this invention will be explained in FIG. Foil width 1 of metal electrode foil 12 such as aluminum foil wound around reel 11
W is fixed to one value, which corresponds, for example, to the length L in the conventional device, and the variable length 1L required to obtain a predetermined capacitance corresponds to, for example, the foil width W in the conventional device. Select one value. The tab 14 for attaching the lead wire moves from the left to the right in the figure along the tab supply direction 1t on the electrode foil 12, causing damage due to cutting approximately at the center of one electrode foil piece 112 to be cut later. It is fixed by any means in a position where it will not be exposed to. The electrode foil 12 on which the tab 14 is fixed is cut in a direction 1 perpendicular to the foil width 1W using a cutting blade 13 at right angles to this direction 1 so that the electrode foil 12 has the above-mentioned length 1L. A piece 112 is obtained.
The electrode foil piece 112 moves in the direction 1p perpendicular to the direction 1, and the electrode foil piece 112 moves in the direction 1p perpendicular to the direction 1, and forms a wound body 15 obtained by overlapping several sheets of paper or plastic film, for example.
The direction of rotation of the core 1r around the core 16 is between the layers of
It is wound up.

The capacitor obtained with a winding device that performs this method is configured to have a foil width of 1 W, which corresponds to the length L in a conventional winding device, and a length of 1 L, which corresponds to the foil width W. Therefore, it is possible to adopt a relatively large foil width 1W and a relatively narrow length 1L that requires only a space for attaching the tab 14. In this way, the capacitor capacity can be freely set by combining the foil width 1W, which is fixed at one relatively large value, with the variable length 1L, which can be selected at one relatively small value. It is now possible to cut the electrode foil piece 112 with a length of 1L and the position where the electrode foil piece 112 is to be cut.
Since the foil width 1W is highly invariable, the position of the core 16 at which the core 16 should be wound between the layers can be separated. That is, this invention has the following advantages.

1. Since the electrode foil has excellent linearity since the foil width is relatively large, a common slitting device with a simple cutting mechanism can be used.

2. In order to fix the tab for attaching the lead wire before cutting the electrode foil, it is recognized that the excellent point is that the tab can be reliably aligned with respect to a large value of the foil width.

3. Since the direction in which the electrode foil 12 moves and the direction in which the cut electrode foil piece 112 moves can be made different, winding can be performed at a location slightly away from the cutting location, so the cutting device The arrangement of the winding device and the winding device can be easily selected.

4. Since the foil width of the electrode foil piece has a relatively large value and is highly invariable, the dimensions of the electrode foil piece tend to take a constant value, and therefore, the accuracy of the capacitor capacitance is excellent.

5. Due to the large foil width of the electrode foil, it is possible to increase the outer diameter of the reel on which it is wound, and this together with the fact that the relationship between the cutting position and the winding position can be set independently as described above. The efficiency of the winding device is 5 to 10 times better than conventional technology.

6 Even if the foil width changes from the conventional 15mm to 10mm to the recent 4mm, the electrode foil is cut immediately after one tab is fixed to the electrode foil piece, so Many tabs are fixed in succession and do not droop, therefore
There is no slack in the electrode foil, and when these materials are pooled, there is no foil breakage and resulting damage.

7. Immediately after fixing the tabs, the electrode foil strips are rolled up and stored, so the conventional defect of large pools of tabbed material does not occur.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing a conventional induction type capacitor winding device. FIG. 2 is a perspective view schematically showing the induction type capacitor winding device of this invention. In the figure, 2, 12... electrode foil, 3, 13...
... Cutting blade, 4, 14 ... Tab, 5, 15 ... Winding body, 112 ... Electrode foil piece.

Claims (1)

[Scope of utility model registration request] A mechanism for fixing a tab for attaching a lead wire in the direction in which an electrode foil having a relatively large foil width is sent out, and a mechanism for fixing a tab for attaching a lead wire in a direction perpendicular to the foil width with a relatively small length of the electrode foil to which the tab is fixed. An ultra-compact induction type capacitor winding device comprising a mechanism for cutting the electrode foil pieces at right angles to the direction and a mechanism for moving the electrode foil pieces in the above-mentioned perpendicular direction and winding them into a winding body.