JPH0640602Y2 - Flexible tape for rapier loom - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flexible tape for a rapier loom, and more particularly to improvement of a tape having a laminated structure composed of a plurality of base cloths.

(Prior Art) In a rapier loom, a rapier is driven by a flexible tape that engages with a drawing sprocket, and a large number of sprockets are engaged with the tape at predetermined intervals in the longitudinal direction for engagement with the sprockets. A hole is formed. Due to such a perforated structure, the tape is required to have a high material strength from the viewpoint of preventing breakage. For example, JP-A-62-28441 has a laminated structure of a plurality of synthetic resin base cloths. A tape has been proposed. As such a laminated structure, there is, for example, a laminate of about 25 sheets of base fabric having a thickness of about 0.1 mm.

However, since the tape having such a resin laminated structure is inferior in strength, for example, No. 61-12988 and No. 62-6382 are used.
It has been proposed that some of the base fabrics be composed of a reinforcing material, or that a wear resistant reinforcing material be added to the tape surface.

However, in the case where such a reinforcing material is used, since the reinforcing material exists over the entire surface of the tape, the reinforcing material having a large breaking strength is not cut cleanly when the sprocket engaging hole is formed and the sprocket engaging hole It tends to protrude in a burr shape on the peripheral wall surface or peel off between the laminated materials during perforation. As a result, when the sprocket engaging hole portion of the tape is repeatedly engaged with the sprocket, there is a drawback that the peeling of the base cloth from the portion is promoted. In addition, the repeated contact with the burr causes a disadvantage that the teeth of the sprocket are damaged due to wear.

(Summary of the Invention) An object of the present invention is to provide a flexible tape for a rapier loom that has excellent strength, less peeling, and less damage due to abrasion of the teeth of the sprocket.

For this reason, in this invention, a laminated structure composed of a plurality of base fabrics is used, and a reinforcing material is present at least in part in the thickness direction of the laminated structure and in the longitudinal direction outside the sprocket engaging holes. It is a summary.

(Embodiment) FIG. 1 shows a first embodiment of the present invention,
Non-perforated part A of tape having a plurality of sprocket engaging holes 1
Only, the reinforcing material is present extending in the longitudinal direction as indicated by the shaded line in the figure. As a method of inserting the reinforcing material in the thickness direction of the tape, there are embodiments shown in FIGS. 2 (A), 2 (B) and 2 (C).

In order to allow the reinforcing material to exist in this manner, the reinforcing material may be woven in the form of warp and / or weft during weaving of the base fabric.

As another example, a belt-shaped reinforcing material may be inserted between adjacent base cloths at a predetermined position during lamination.
Such stiffeners are of relatively thin construction, and the tape is subjected to a strong press during its preparation, so that inserting the stiffener between the base fabrics is a practical problem for the product. There is no difference in thickness.

As described above, according to this invention, the reinforcing material is added while avoiding the portion that becomes the sprocket engaging hole when the base fabric is laminated, so that burrs are generated when forming the sprocket engaging hole without lowering the strength of the tape. Since it does not occur, peeling is reduced and damage due to sprocket wear is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory plan view showing an embodiment of the present invention, and FIGS. 2 (A) to (C) are sectional views showing an example of inserting a reinforcing material in the thickness direction of the tape. A: Non-hole, B: Perforated 1: Sprocket engaging hole

Claims (3)

[Scope of utility model registration request] 1. A laminated structure comprising a plurality of base fabrics, wherein a reinforcing material is present in at least a part of the laminated structure in the thickness direction and in the longitudinal direction outside the sprocket engaging holes. Characteristic flexible tape for rapier loom. 2. The tape according to claim 1, wherein the reinforcing material is woven into a base cloth. 3. The tape according to claim 1, wherein the reinforcing material is inserted between adjacent base fabrics.