JPS59160404A - Face fastener connecting method and apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a joining method and apparatus in which hook-and-loop fasteners in which engaging elements such as loops and hooks are implanted on one side of a base fabric are overlapped and seamed by ultrasonic vibration. .

PRIOR ART In general, so-called hook-and-loop fasteners, in which engaging elements such as loops and hooks are implanted on one side of a base fabric, consist of a male side fastener member having an engaging element (hook) and a female side fastener member having an engaged element (loop). The male side fastener member and the female side fastener member may be overlapped and joined at the ends to be used as a belt-shaped product in which the double-sided fastener member is added.

In such cases, it is common to join the double-sided fastener members to each other by sewing, but if the engaging element is present on the joint surface side, the elasticity of the engaging element may cause lateral or vertical displacement. One part of the double-sided fastener is relatively misaligned and cannot be joined accurately.

For this reason, the engaging element of the part to be joined (joint part) is removed using a grinder, an eyebrow agent is applied there, and the base fabric part of another hook-and-loop fastener is superimposed on this surface and bonded. , a joining method was proposed in which the joint portion was heated (Japanese Patent Publication No. 14659/1983).

However, with this method, the joining operation is troublesome because the engaging element of the joining portion of the hook-and-loop fastener on the lower side must be removed.

OBJECTS OF THE INVENTION An object of the present invention is to provide a method and apparatus for joining hook-and-loop fasteners that can prevent relative displacement of hook-and-loop fasteners even though it is not necessary to remove the engaging elements of the joining portions.

According to the method of the present invention, when applying pressure between an ultrasonic horn and an anvil in a state in which hook-and-loop fastener members to be joined are stacked on top of each other, at least two The hook-and-loop fastener is constructed by piercing the overlapping portion, that is, the joint portion, of the hook-and-loop fastener using needle-like members. Further, according to the apparatus of the present invention, the above-mentioned object II is such that the ultrasonic horn includes at least two needle-like members that further protrude from the pressurizing part toward the anvil, and the needle-like members are inserted into the ultrasonic horn. This is accomplished by forming a similar recess in the anvil.

Example Hereinafter, the present invention will be explained based on examples shown in the drawings.

In Fig. 1, (1) and 2) are the hook-and-loop fastener members to be joined together, (10) is the ultrasonic horn, and (20)
is an anvil provided facing the ultrasonic horn (10).

The hook and loop fastener member (1) is a female side fastener member in which a male side engaging element (4) such as a loop is implanted on one side of the base fabric (3), and the hook and loop fastener member (2) is a base fabric (3). This is a cicada side fastener member in which a male side engaging element (6) such as a hook is implanted on one side of 5).

The engagement elements (4) and (6) are made of synthetic resin thread or monofilament.

The ultrasonic horn (10) has two types of pressure parts (11) and (12) that protrude toward the anvil (20) at the tip.
and two nail-like members (13). Pressure part (11
) are L-shaped, as shown in FIG. 2, and there are four of them, each located at a corner of a square.

As shown in FIG. 2, the pressurizing part (12) has a linear shape extending in the longitudinal direction of the hook-and-loop fastener members (1) ('2), and is located at the center of the square. It is being The assembled member (13) is a needle that can pierce both the hook-and-loop fastener members (1) and (2), like a sewing needle. Pressure parts (11) (12
) protrudes longer than the height of the engagement elements (4) (6), and the needle-like member (13) extends from the pressure part (11) (1
2) is even more prominent.

The anvil (20) may be provided with guide members (21) (21) in the shape of an upward opening, as shown in FIG. 3, on the upper side. This guide plate (21) <21) forms a guide part on the upper surface of the guide member (22) that continues to the upper opening-shaped guide groove, and the needle-like member (13) A recess (23) for insertion is formed. In the illustrated example, the recess (23) is a needle-like member (1
The blind hole has the same shape as 3), but the anvil (20)
b If the wall is thin, it may be a through hole.

This device connects the ends of the hook-and-loop fastener member (1) to be joined to the anvil (with its engaging element (4) facing upward).
20), and the ends of the hook-and-loop fastener member (2)° to be joined are stacked on top of it with the engaging element (6) facing upward, and then the ultrasonic horn (10) is processed. Then, as shown in Fig. 4, the joined parts of the hook-and-loop fastener members (1) and (2), that is, the joined parts, are processed using an ultrasonic horn (10) and an anvil (20), and in that state, the Apply ultrasonic waves to the fastener parts (1) and (2). As a result, the engaging elements (4) corresponding to the pressurizing parts (11) (12) melt and form the hook-and-loop fastener members (1) (2).
are welded at the portions corresponding to the pressurizing parts (11) and (12).

In this device, the nail-like member (13) (13) is first processed into the hook-and-loop fastener member (114) in the processing 114 of the ultrasonic horn (10).
) (2) to position -C, and then the pressurizing part (11
)(12) pressurizes the hook-and-loop fastener members (1) and (2) by 1 degree, so the hook-and-loop fastener members (1) and (2) are relatively Therefore, the surface hook and snapper parts (1) (2)
) can be joined accurately. In addition, the pressurizing part (11
) (12) protrudes more than the engaging elements (4) and (6), so the engaging elements that do not come into contact with the pressurizing parts (11) and (12) do not melt and lose their function as engaging elements. There is no.

Note that although no adhesive was used in the above example,
An adhesive may be provided between the hook and loop fastener members ('1) and (2). Moreover, the pressurizing part does not need to be divided into a plurality of parts, and may be a single flat surface.

Effects of the Invention As described above, the present invention pierces the joined portion of the hook-and-loop fastener with at least two needle-like members provided on the ultrasonic horn while the hook-and-loop fastener members to be joined are stacked on top of each other. Even though it is not necessary to remove the engaging elements of the joint portion, there is no relative displacement of the hook-and-loop fastener, and it is possible to join accurately.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the bonding device according to the present invention, Fig. 2 is a bottom view of the ultrasonic horn, Fig. 3 is a left side view of the anvil, and Fig. 4 is an explanatory diagram of the bonded state. (1) (2) : Hook and loop fastener part, (io) :
Ultrasonic horn, (13): needle-like member, (20): anvil, (23): recess. Patent applicant: Yoshida Ichigyo Co., Ltd. Figure 1 Figure 2. 13-1 Figure 4 0

Claims (1)

[Scope of Claims] 1) Hook and loop fastener members to be joined to each other are set between an ultrasonic bone and an anvil in an overlapping state, and provided on the ultrasonic horn so as to protrude toward the anvil. A method for joining hook-and-loop fasteners, characterized in that the at least two needle-like members are pierced through the joint portion of the hook-and-loop fastener, and then the hook-and-loop fasteners are joined by pressure using the ultrasonic horn and an anvil. With the hook-and-loop fastener members (1) and (2) superimposed, place the ultrasonic horn (10) and anvil (2) on top of each other.
0), the ultrasonic horn (10) has an anvil (20
), and the anvil (20) is provided with a recess (23) into which the needle member (13) is inserted.
A hook-and-loop fastener joining device characterized by: