JPH0320061B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulating sleeve expansion device for securely inserting an insulating sleeve into a capacitor.

Cylindrical capacitors such as electrolytic capacitors are covered with a heat-shrinkable insulating sleeve. This insulating sleeve is wound onto a reel in a crushed state, and a predetermined length is pulled out from the reel, cut with a cutter, and inserted into a capacitor case. If the tube is thin, it is easy to expand it, and automatic feeding is already in place, but if the tube is thick and is used for the case of a large capacitor, the tube is cut to a predetermined length and placed in the capacitor case. The reality is that they are inserted manually.

The tube expansion device of the present invention aims to provide a device that can reliably automatically insert a tube into a cylindrical case even if the tube is thick. A device consisting of a vacuum part, a split core metal inserted into a sleeve opened by this vacuum part, a taper block that moves along the taper of this split core metal, and a moving device that moves this taper block. be.

Embodiments of the present invention will be described based on the drawings: 1
is a heat-shrinkable insulating sleeve reel, and the insulating sleeve 2 from this reel 1 is fed out by a roller 3,
It is rolled out in 4. The let-out sleeve 2 is cut by a cutter 5, and the cut sleeve 2 is held by vacuum parts 8, 9 attached to holders 6, 7. The vacuum pads 8 and 9 are disposed vertically offset from each other in the longitudinal direction of the cut insulating sleeve 2 to facilitate opening of the sleeve. These holders 6 and 7 are air cylinder 1
0, it slides back and forth within the holder base 11.

Reference numeral 20 denotes an insulating sleeve expansion core metal device, in which a split core metal 21 divided into four parts has a tapered portion 22 on its inner surface and a flange 25 that fits into a groove 24 in a holder 23. 26 is a gap within the groove 24. A taper block 27 in contact with this taper 22 is fixed to a central shaft 28 and connected to an air cylinder 29. Reference numeral 35 is a holding shaft that holds the sleeve expansion core device 20 in a swingable manner. 36 connects the insulating sleeve 2 to the capacitor case 4
This fork 36 is used to push the fork to zero, and this fork 36 is driven by an air cylinder 37.

41 is a capacitor jig, and capacitor 40
The terminals are inserted with their terminals facing downward and are being transported at predetermined intervals.

To explain the operation of the present invention, in FIG. 3, the insulating sleeve 2 is cut with a cutter 5,
The cut sleeve 2 is held by the vacuum parts 8, 9 provided on the holders 6, 7, and while the holders 6, 7 are moved from A to B by the air cylinder 10, the insulating sleeve 2 is held by the vacuum parts 8, 9 provided on the holders 6, 7. The suction causes it to be in a half-open state (Fig. 5). The split core metal 21 of the sleeve expansion core metal device 20 is inserted into this half-open sleeve 2A (FIG. 6). This core metal 2
1, the outer diameter _D1 of the core bar 21 is maintained at the minimum diameter by the action of the taper block 27 (Fig. 9), and the core bar 21 is inserted into the sleeve 2A, and the tip end 21A of the core bar 21 is inserted into the sleeve 2A. After protruding from the sleeve 2A, the air cylinder 29 is actuated and the central shaft 2
8, the core bar 21 is expanded by the taper block 27, and the outer diameter _D2 of the core bar 21 becomes the maximum diameter, and the half-open sleeve 2A becomes fully open 2B with an approximately circular diameter (Fig. 6, Figure 11). With this sleeve 2B inserted into the core metal 21, the core metal device 20 moves up the holding shaft 35 and swings from A to C. The capacitor 40 set in the capacitor jig 41 has moved to this position C and is stopped. Capacitor 40 and core metal 2
1 are aligned, the core metal device 20 is lowered, and at the position where the core metal 21 and the capacitor 40 come into contact, the sleeve 2B is pushed down by the fork 36, and the sleeve 2B is transferred from the core metal 21 to the capacitor 40. Thereafter, the sleeve 2B is temporarily contracted by a height adjustment device 50 for making the height of the sleeve constant and a hot air generator 51 to temporarily fix the sleeve 2B to the capacitor. Thereafter, the capacitor is taken out from the capacitor jig 41 and passed through a shrinking furnace, whereby the sleeve is completely heat-shrinked.

Even if the insulating sleeve is thick and long, the device of the present invention first half-opens the sleeve with a vacuum pad to the extent that the split core metal can be inserted, and after inserting the split core metal into the sleeve, the outer diameter of the capacitor case is The diameter of the split core is expanded until the diameters are approximately the same. During this expansion, the taper block moves to the tapered part within the split core and expands it evenly, so no excessive load is applied to the insulating sleeve. ,
It also became possible to reliably expand the sleeve, increasing the rate of sleeve insertion into the capacitor.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a front view showing the cut sleeve being held by a vacuum pad, and FIG. The figure is a perspective view of the sleeve half open and the split core metal is about to be inserted, Figure 6 is a perspective view of the core inserted, Figure 7 is a perspective view of the core expanded, and Figure 8 is the capacitor. FIG. 9 is a vertical cross-sectional view with the core metal at its minimum diameter, FIG. 10 is a cross-sectional view of the same, FIG. 11 is a vertical cross-sectional view with the core metal expanded, and FIG. The figure is a cross-sectional view of the same. In the drawing, 2 is an insulating sleeve, 8 and 9 are vacuum parts, 21 is a split core metal, 27 is a tapered block, 36 is a fork, and 40 is a capacitor.

Claims (1)

[Claims] 1. An insulating sleeve that covers the capacitor, a vacuum part provided on the holder to partially open this insulating sleeve, and a taper inside to expand the sleeve by inserting it into the sleeve opened by this vacuum part. An expansion device for an insulating sleeve, comprising: a split core metal; a taper block that contacts the split core metal and is fixed to a central shaft; and a moving device for moving the central shaft.