JPS6313259Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an insert-type gilf aura ribbon used in a gil machine.

[Conventional technology]

The conventionally used insert type Gilf Aura has several extremely thin circles on the sides of the Gilf Aura rubber and Gilf Aura ribbon to prevent the Gilf Aura ribbon from being pulled out from the Gilf Aura ribbon while the machine is operating. After inserting the GILF Aura ribbon into the GILF Aura ribbon through the hole, a pin is driven into the round hole to fix both. Gilf Aura Ribbon is inserted and fixed by applying adhesive to both sides or the inner surface of the groove of the Gilf Aura Rubber.As shown in Utility Model Publication No. 4815-1987, a composite formed by burying the bases of parallel needles. A GILF Aura ribbon made of a resin molded product is press-fitted into a groove in the GILF Aura rubber, or, as shown in Utility Model Publication No. 54-5852, the tip of the GILF Aura ribbon is placed on the longitudinal side of the ribbon in the direction of the needle point. Products with scale-like protrusions that point toward the surface have been developed.

[Problem that the invention attempts to solve]

In the conventionally used insert-type GILF Aura, those in which the GILF Aura rubber and the GILF Aura ribbon are fixed using pins or adhesives require the use of extra materials such as pins and adhesives. The vibration of the machine during operation or the resistance of the sliver may loosen the pins or weaken the bond, creating a gap between the Gilf rubber and the Gilf aura ribbon, causing the fibers to wrap around, and eventually separating the Gilf rubber from the Gilf aura ribbon. It has drawbacks such as the fuora ribbon falling off. In addition, if a synthetic resin molded product is used for the Gilf Aura ribbon and is press-fitted into the Gilf Aura ribbon, when press-fitting,
The synthetic resin molded product is deformed or cracked, resulting in a decrease in the adhesion of the needle to the synthetic resin molded product, the needle falling off, and insufficient adhesion of the Gilf Aura Ribbon to the Gilf Aura Rubber. Problems such as the Gilf Aura ribbon falling off from the Gilf Aura rubber have occurred. Furthermore, the method in which scale-like protrusions are provided on the GILF Aura ribbon requires an extra step to form the scale-like protrusions, and it has been found that complete adhesion to the GILF OVER rubber is still insufficient.

[Means to solve the problem]

The insert-type GILF Aura ribbon of this invention is made by embedding the proximal ends of parallel needles in a base member, and the GILF Aura ribbon has the same length as the groove provided in the GILF Aura rubber into which the ribbon is inserted. It's hot,
It is formed of cross-linked or vulcanized shape memory rubber, that is, a heat-recoverable elastic article, which is formed into a shape that is at least partially wider than the width of the groove.

[Effect]

The shape memory rubber used for the ribbon of this invention is
Processing or molding into articles of specified shape,
A cross-linked or vulcanized molded product is heated above the softening temperature of the thermofluid substance or thermoplastic component, an external force is applied to change the size or shape of the molded product, and the product is cooled in the deformed state. Alternatively, if it is rapidly cooled, it will maintain its deformed state below its softening temperature even when the external force is removed. When the shape memory rubber thus deformed is heated, it recovers the shape of the molded article before deformation. Therefore, since the ribbon of the present invention is formed of the shape memory rubber so that at least a portion thereof is wider than the groove provided in the Gilf rubber, when the ribbon is inserted into the groove, To do this, heat the material above its softening temperature, apply external force to deform it so that it has a groove width that is the same as or slightly narrower than that of the Gilf Rubber, and then cool it in the deformed state to fix the deformed shape. do. After inserting the deformed and fixed ribbon into the Gilf rubber,
By heating again, the ribbon regains its original shape in which a portion is wider than the groove width, so that a pressing force is generated against the groove sides, and the ribbon is firmly fixed in the Gilf rubber.

【Example】

An embodiment of this invention will be described with reference to FIGS. 1 to 4. The insert type GILF Aura of this invention has needle 1.
are arranged in parallel, and the proximal ends 2 of the parallel needles are embedded in the base member 3.
It has the same length as the U-shaped groove 6 provided in the groove, and the groove width W
Shape memory rubber, that is, a heat-recoverable elastic article, is molded so that at least one part thereof has a wide shape, for example, a barrel shape 3a with a wide central part as shown in FIG. or cross-link. The needle row ribbon 4 is softened by heating to a temperature higher than the softening point of the shape memory rubber that constitutes it, and then applied with an external force so that the width W of the groove 6 of the Gilf rubber 5 or a width slightly smaller than that is the same. In addition, it deforms and gives deformation strain. At room temperature, the needle row ribbon 4 that has been rapidly cooled while applying an external force maintains the shape 3b that can be inserted into the groove 6 of the gilf rubber 5 as shown in FIG. The needle row ribbon 4 with the modified base member 3 is inserted into the groove 6 of the Gilf rubber 5 in the direction of the arrow in FIG.
After insertion, when it is heated again, it will soften, the deformation strain will be removed, and it will try to restore to its original memorized barrel shape 3a. Therefore, the restoring force strongly presses the inner side surface of the groove 6 of the Gilf rubber 5, and as a result, the Gilf rubber 5 and the needle row ribbon 4 are firmly fixed as shown in FIG. . Note that the shape of the needle row ribbon 4 is not limited to the above-mentioned barrel shape 3a;
Any material can be selected, such as one with wavy unevenness on the side surface. The shape memory rubber used in this invention is
For example, by adding a low-molecular rubber raw material to ethylene propylene-based synthetic rubber, etc., taking advantage of the differences in the constituent molecules, it is heated to 70 to 150°C to deform and strain, and then rapidly cooled to fix the deformed shape. However, it is possible to use shape memory rubber that returns to its original shape by reheating. In addition, there are heat-recoverable elastic articles made of thermoplastic polymers such as cross-linked polyethylene and polyvinyl chloride, and elastic articles in which a mixture of an elastic body and a thermofluid substance that is solid at room temperature is molded into a predetermined shape, and then the elastic bodies are cross-linked. For example, Japanese Patent Publication No. 51-39996, Japanese Unexamined Patent Publication No.
It is described in JP-A-59-64342, JP-A-59-227437, JP-A-59-227438, etc.

[Effect of the idea]

As described in detail above, the insert-type GILF Aura ribbon of this invention does not require extra materials such as pins and adhesives unlike the conventional GILF Aura, and uses the restoring force of the shape memory rubber to connect the GILF OVER rubber and gil. Since the fluora ribbon is fixed, the fixing force changes over time due to vibration of the machine or resistance of the sliver, creating a gap between the gilfora ribbon and the gilfora ribbon, and winding of the fibers may occur. There is no chance that the Gilf Aura Ribbon will fall off from the Gilf Aura Rubber. In addition, since the fixation of the Gilf Aura ribbon into the U-shaped groove of the Gilf Aura rubber is not by press-fitting but by simply inserting and heating, it can be easily and quickly carried out without requiring any special skill. It has characteristics.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view of the insert-type GILF-Aura of this invention, Fig. 2 is a longitudinal sectional side view of the GILF-Aura ribbon and GILF-Aura rubber showing the state when the insert-type GILF-Aura of the invention is assembled, and Fig. 3 is the assembled state. FIG. 4 is a front view of the GILF Aura ribbon of the present invention. DESCRIPTION OF SYMBOLS 1... Needle, 2... Base end part, 3... Base member, 3a
... Barrel shape, 3b ... Insertable form, 4 ... Needle row ribbon, 5 ... Gilf rubber, 6 ... U-shaped groove.

Claims (1)

[Scope of utility model registration request] The proximal end of the needle row ribbon, which is formed by embedding the proximal ends of parallel needles in a base member, has the same length as the groove provided in the Gilf rubber into which the needle row ribbon is inserted. An insert-type GILF Aura ribbon made of cross-linked or vulcanized shape memory rubber, which is formed into a shape that is at least partially wider than the width of the GILF Aura ribbon.