JPS593807B2 - Tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously feeding tape, and more particularly, the present invention relates to a method for continuously feeding tape, and more particularly, the present invention relates to a method for continuously feeding tape, and more particularly, the present invention relates to a method for continuously feeding tape, and more particularly, before the tape wound on one drum is finished feeding, the trailing edge of the tape is wound on a separate drum. The present invention relates to a method for continuously supplying tape by connecting the starting edges of the tape.

For example, in a cable manufacturing process, it may be necessary to continuously supply tape, such as when clamping a table around a cable core.

In such cases, the conventional method is to pull out and accumulate tape in a tape accumulator at a speed faster than the tape feeding speed shortly before the tape wound on the drum finishes unwinding, and the tape accumulated in the accumulator is transferred to the machine. connecting the leading edge of the tape wound on a separate new drum while being fed to the trailing edge of the tape being fed;
A method of continuously feeding tape was used. However, this method requires an accumulator device that fast-forwards and stores the tape corresponding to the time required to connect the tapes, and if the time required to connect the tapes is long, an unattended accumulator device is also required. It had drawbacks such as. For this reason, recently a folded part has been provided at the end of the tape, and when this folded part appears near the end of tape feeding, a new tape is connected to the end of this folded part, and the tape is continuously supplied. A method has been proposed (see Japanese Patent Laid-Open No. 77991/1983). Although this method does not require an accumulator device, the folds at the end of the tape can become creased, damaging the tape and degrading the mechanical properties of cables made with such tape, for example. In view of the above-mentioned drawbacks, the present invention aims to provide a method that can continuously supply tape without requiring such an accumulator device and without creating creases at the end of the tape. shall be.

The method of the present invention will be explained in detail below with reference to the drawings. Fig. 1 schematically shows a tape feeding device 1 for continuously feeding tape to which the method of the present invention is applied. A drum 3 on which a tape 2 to be fed is wound is rotatably supported by a shaft 11 of a tape feeding device 1, and the tape 2 is fed by a tape feeding mechanism (not shown) such as a tape hardening device. and a processing device (not shown).

This drum 3 has a pair of collars 31 as shown in detail in FIG.
, 32 and a hollow winding drum 33 installed between these collars.
A support tube 34 for penetrating the shaft 11 of the tape feeding device 1 is fixed between the centers of the flanges 31 and 32.

A long slit 35 in the axial direction is formed in the winding drum 33, and this slit 35 extends almost the entire length between the collars 31 and 32, and the edge 35a of this slit preferably does not damage the tape. It has a rounded shape (see Figures 3 and 4). The tape 2 is wound around the drum 3 having the above-described structure, and the tape is wound in the following manner.

That is, as shown in FIGS. 3 and 4, the terminal end of the tape 2 is folded back so that the back sides are together, and the folded end 2a of the tape is folded so as not to create a crease.
After inserting the tape into the slit 35 provided in the drum 33 of the drum, wrap the tape completely around the drum as usual. A large number of such tape winding drums are prepared, the drums are attached to the shaft 11 of the tape feeding device 1, and the tape is fed from the tape feeding device 1 to a predetermined machine by a tape feeding mechanism. When the tape is gradually fed and the remaining tape runs out (Fig. 3), the end edge 2b of the tape wound on the drum appears just before there is no more tape left to feed (Fig. 3).
(Fig.), the operator uses a tape splicing machine (not shown) to connect the trailing edge 2b of this tape to the leading edge 2'c of the tape 2' in the next tape winding drum 3' which is waiting near the drum being fed. It can be connected by The tape 2' is also wound around this waiting drum 3' in the same manner as before. During this connection operation, as described above, the tape is overlapped near the end and wound around the drum, so the tape feeding operation is not affected in any way. Therefore, the overlapping length of the end portions of the tapes is appropriately determined in consideration of the tape feeding speed and the time required for the tape splicing operation. In this way, the tape is fed from the new tape winding drum 3', and the tapes in other drums are connected in the same manner. According to the method of the present invention, there is no need for an expensive accumulator, so the equipment can be made inexpensive, and unlike simply folding the end of the tape and winding it around a drum, there is no crease in the di-tape, so the tape The tape can be fed continuously without damaging the tape.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing how a tape winding drum is hung on a tape supply device to supply tape, and FIG. 2 is a diagram showing a drum used to carry out the method of the present invention.
FIG. 3 is a sectional view showing the drum shown in FIG. 2 where the tape is wound by the method of the present invention, and FIG. 4 shows the end of the tape exposed when the tape winding drum shown in FIG. 3 is unwound. FIG. 2,2t...tape, 3,3t...drum, 33...winding drum, 35...slit,
2a...Folded end portion, 2b...Terminal edge,
2'c...Starting edge.

Claims (1)

[Claims] 1. In a method for continuously supplying tape by connecting the trailing edge of the tape wound on a drum during tape feeding to the starting edge of the tape wound on a waiting drum, a slit is provided in the winding drum of the drum. , the end of the tape is folded back so as to overlap in this slit, and the folded end is inserted into the slit to wind the tape around a drum, and from one drum having the tape wound in this way, When a tape is fed and the trailing edge of the tape wound on this drum appears, the starting edge of the tape in the waiting drum on which the tape is being wound in the same way is transferred to the tape in the feeding drum. A method for continuously supplying tape, characterized in that the tape is connected to the terminal edge of the tape.