JPH0479980A - Manufacture of fancy tape and folder used therefor - Google Patents

Abstract

PURPOSE:To efficiently manufacture fancy tapes of the same or different kinds simultaneously so as to reduce labor costs by sewing up two fancy tapes of the same or different kinds simultaneously using a twin-needle double-circle sewing machine. CONSTITUTION:A folder 11 has tape guides 12, 13 provided on both sides thereof. The tape guides 12, 13 each have respective tape insertion openings 14, 15 of long size at respective rear ends thereof and are each gradually bent into two parts in the outward direction as it extends in the forward direction, and the tape guides 12, 13 are each flattened at an opening provided through one end thereof. The tape guides 12, 13 are each doubled from roughly the center thereof and bias tape 2, 3 is inserted into this space. A bias tape 4 to be sewed to the lower side of the bias tape 3 is inserted into an auxiliary tape guide 19. Fancy tapes of types different on the bias tape 2 side and on the bias tape 3 side are thus manufactured simultaneously by using a twin-needle double-circle sewing machine.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention provides a method for efficiently manufacturing decorative tapes used for duvet covers, edges of clothing, collars, etc., and a method for folding bias tapes used in the process. This relates to a folder (folding tool) for supplying tatami mats.

[Conventional technology]

Decorative tape (piping fabric) wrapped around a core (C type) is often sewn onto the collar of a futon cover. This decorative tape can be made by folding bias tape 2 in half, wrapping the core 1 at the folded part, and sewing a straight line along the core 1 to secure the core 1 (single type, Fig. 5 (A)).
), Bias tape 3 of a different color is folded in half and attached to the bottom of bias tape 2, which is folded in half and wrapped around core 1.
There is one in which two bias tapes 2.3 are sewn in a straight line along the core 1 (double type, Fig. 5 (B)). Conventionally, these decorative tapes are made by folding the bias tape in half and using a folder to feed the core into the folded part.
They were manufactured one by one continuously using a sewing machine.

[Problems to be Solved by the Invention] In the case of the conventional decorative tape manufacturing method described above, one sewing machine can only manufacture one piece of decorative tape, and the bobbin case for the bobbin thread must be frequently replaced. This method is extremely troublesome and cannot be said to be very efficient in production.Furthermore, since one worker must be attached to each sewing machine, the production cost is unavoidably high.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method that is extremely efficient in manufacturing compared to conventional methods, and can manufacture decorative tapes at low cost without requiring labor, and to provide a folder for use in the method. shall be.

[Means to solve the problem]

The present invention provides a method for manufacturing a decorative tape, characterized in that decorative tapes of the same type or different types are sewn at 2 weights using a double needle double chainstitch sewing machine, and a method having a vertically elongated bias tape insertion opening. A pipe-shaped core guide, in which tape guides which are folded outward in half and made flat in the transverse direction as they move toward the distal end are joined in opposition, and the distal opening faces the distal opening of each of the tape guides. is fixed to each of the tape guides, and a sub tape guide having a similar shape to the tape guides is fixed to one or both of the tape guides so that the tip thereof overlaps with the bottom of the tip of the tape guide. The above problem was solved by using the manufacturing folder-1.

[For production]

Using a double needle, double chainstitch sewing machine, the bobbin thread is supplied from the spool and each of the two needles finishes a different decorative tape, making manufacturing efficiency twice as high as before.

Prior to sewing, the bias tape is folded in two by passing through a tape guide, and if necessary, a core supplied from a core guide is held at the folded portion. Further, if necessary, the bias tape that is supplied folded in half from the sub-tape guide is overlapped.

〔Example〕

Preferred embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral 11 denotes a folder according to the present invention, which is provided with tape guides 12 and 13 on both sides. Tape guide 12.13 is
Each tape has a longitudinally elongated tape insertion opening 14, 15 at its rear end, and as it goes forward, it is gradually folded in half outward, and the tip opening is made flat. Then, from the middle, it becomes double, and in that space there are 2.3 bias tapes.
is inserted. Tape guide 12.1
3, the intermediate portion and the tip portion thereof are connected via a connecting plate 16. Further, the folder 11 is usually a connecting plate I.
It is fixed on the table of the sewing machine via 6. 17.1
8 is a core guide, each tip of which is connected to tape guide 1.
2. Insert the tape guide 12. so that it faces the tip of the tape guide 12.
It is fixed at 13. The core guides 17, 18 are pipe-shaped and the core 1 is inserted therethrough. 19 is tape guide 12.1
3 A sub-tape guide with a similar shape, in the illustrated example it is installed on the tape guide 13 side, but it is installed on the tape guide 12 side.
It may be installed on either side or on both sides. Preferably, the tip of the sub tape guide 19 is fixed under the tip of the tape guide 13, and its tip opening is integrated with the tip opening of the tape guide 13 (see FIG. 3). A bias tape 4 to be sewn to the lower side of the bias stave 3 is inserted into the sub tape guide 19. Reference numeral 20 denotes a presser foot, and two groups 21 are formed on the back surface of the presser foot for releasing the core portion of the decorative tape. 22 is a needle hole.

When using the folder 11 having the above structure, the bias tapes 2 to 4 are inserted into each tape guide 12, 13, and 19, and the core 1 is inserted into the core guide 17.18. At this time, each bias tape 2 to 4 is gradually folded along the shape of the tape guide 12, 13, 19 as it approaches the tip, and the bias tape 2.3 is guided to the core guide 17, 18. The wicks 1 are fed to these folds. Then, when each tape is pulled out from the tip opening of each guide, each tape is completely folded in half, and the bias tape 2.3 has a core 1 in the folded part.
The bias tape 4 is placed on the underside of the bias tape 3. In this state, each tape is pulled out to the bottom of the presser foot 20, and the presser foot 20 is lowered so that the corresponding part of 8 is placed in the group 21, and the sewing machine is operated. If a two-needle double chainstitch sewing machine is used as the sewing machine, different types of decorative tapes can be simultaneously manufactured on the bias tape 2 side and the bias tape 3 side. In other words, the present invention has twice the manufacturing capacity compared to conventional manufacturing methods. Moreover, since the bobbin thread can be supplied from the spool in the same way as the needle thread without using a bobbin case, there is no need to worry about replacing the bobbin thread, and a large amount of decorative tape can be continuously and efficiently manufactured.

Note that if the sub tape guide 19 is not used or if the sub tape guides 19 are installed on both tape guides 12 and 13, the same type of decorative tape can be manufactured when the second mold is opened. Furthermore, if piping is not used, the core 1 need not be supplied to the core guides 17 and 18.

〔Effect of the invention〕

The present invention is as described above, and has the effect that decorative tapes of the same type or different types can be manufactured at the same time extremely efficiently, and that labor costs can be significantly reduced and manufacturing costs can also be lowered.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing how the folder according to the present invention is used, FIG. 2 is a vertical sectional view of the middle part of the folder, and FIG.
The figure is a longitudinal sectional view of the tip of the folder, FIG. 4 is a view showing the back side of the presser foot, and FIGS. 5(A) and (B) are views showing examples of decorative tape. Explanation of symbols 1- Core, 2-4- Bias tape 11 --- Folder, 12.13- Tape guide 14.15- Tape insertion port 16 --- Connecting plate, 17.1B- Core guide sub tape guide, Presser foot group, needle eye

Claims (2)

[Claims] (1) A method for producing a decorative tape, which is characterized by sewing two decorative tapes of the same or different types at the same time using a two-needle double chainstitch sewing machine. (2) A tape guide having a vertically elongated bias tape insertion opening, which is folded in half outward toward the tip and flattened in the horizontal direction, is coupled oppositely to each other, and the opening at the tip is connected to each of the tapes mentioned above. A pipe-shaped core guide facing the tip opening of the guide is fixed to each of the tape guides, and a sub-tape guide having a similar shape to the tape guide is attached to one or both of the tape guides, the tip of which is the tip of the tape guide. A decorative tape manufacturing folder that is fixed so that it overlaps the lower side.