JPH05329086A - Manufacture of bundl with shank - Google Patents

Abstract

PURPOSE:To prevent generation of bad smell when a slide friction part, formed by twining monofilaments between two metal wires, is to be fastened to the shank made of plastic, concerning manufacture of a shank-equipped bundle of fibers of such a structure that the slide friction part is inserted in the tip of the shank made of synthetic resin in the condition to prevent slipping-off. CONSTITUTION:A metallic insertion part 10 protruding at a slide friction part 13 is inserted in an insert hole 30 which is so formed as to be open to the tip of a shank 3 and a stopper pin 2 made of synthetic resin where a notch is cut in conical form at the end, is inserted into the insert hole 30 by means of ultrasonic vibration from a through hole 32 which is formed in communication from the side face of the shank 3 to the insert hole 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a bundle with a handle, and more particularly to a state in which a rubbing portion formed by twisting a single fiber group between two wire rods is retained at the tip of the handle. The present invention relates to a method for manufacturing a bundle with a handle that is inserted into

[0002]

2. Description of the Related Art As shown in FIG. 5, a synthetic resin fiber or a monofilament (11) such as a sprue is twisted between two metal wire rods (1) and (1), The rod-shaped body from which the wire (1) (1) projects is bent into a U-shape to form the rubbing portion (13), in which a so-called tortoise shell bundle is provided with a synthetic resin handle (3). Conventionally, a handle bundle with this type is manufactured as follows.

The wire rods (1) and (1) projecting from both ends of the rod-shaped body bent in the U-shape are used as insertion portions (10) and (10), and the insertion portions (10) and (10) are placed close to each other. Burn. The pair of the inserted insertion portions (10) (10) are inserted into the insertion holes (30) formed at the tip of the handle (3) so as to be open. Then, since the handle (3) is made of synthetic resin (thermoplastic), the insertion hole (3
The inner wall of (0) is melted, and the melted resin is entangled with the metal insertion parts (10) and (10) in the insertion hole (30). By cooling in this state, the resin that is a part of the handle (3) is
0) (10) is entangled in the state of being entangled, which causes the rubbing part
(13) will be attached to the insertion hole (30) of the handle (3) in a retaining state.

However, in this manufacturing method, since the synthetic resin pattern (3) is burnt and melted by the burned metal wire rod (1), a peculiar odor of melting the resin is generated, which is not good for environmental hygiene. There is.

[0005]

[Problem to be Solved by the Invention] The present invention relates to such a "rubbing portion (13) from which the metallic insertion portion (10) (10) projects and the insertion portion (10).
(10) is made of a synthetic resin handle (3) in which an insertion hole (30) having a depth approximately matching the length of (10) is formed.
(0) (10) is inserted into the insertion hole (30) and attached in a retaining state so that the rubbing part
In order to prevent a bad odor from being generated during the work of inserting the insertion part (10) (10) of (13) into the insertion hole (30) of the handle (3), the insertion part
(10) It is a technical subject to make it possible to mount the handle (3) in the insertion hole (30) of the handle (3) in a retaining state without burning it.

Regarding the invention of claim 1,

[0007]

[Technical Means] The technical means of the present invention for solving the above-mentioned problem is to describe a "inserted metal part (1
0) is inserted into the insertion hole (30) of the handle (3), and through the through hole (32) formed so as to communicate with the insertion hole (30) from the side surface of the handle (3), the retaining pin made of synthetic resin (2) is inserted into the insertion hole (30) in a state where ultrasonic vibration is applied to the stopper pin (2).
That is, the insertion end portion of "is melted."

[0008]

The above technical means operates as follows. Handle (3)
When the stopper pin (2) is inserted into the through hole (32) from the insertion end side, the insertion portion (30) communicating with the through hole (32) is inserted into the insertion portion of the rubbing portion (13) in advance. Since the (10) and (10) are inserted, the insertion end of the stop pin (2) abuts the side surface of the insertion section (10) and (10) and cannot be inserted further deeper.

Therefore, when the stop pin (2) is deeply inserted while being ultrasonically vibrated, the stop pin (2) is made of synthetic resin, and the ultrasonic vibration causes the stop pin (2) to be inserted. As a result, the insertion end of the stop pin (2) is strongly rubbed against the insertion portions (10) and (10), and the frictional heat melts in order. In this way, the stop pin (2) is melted in order from the insertion end by contact with the insertion part (10) (10) by ultrasonic vibration and entangled with the insertion part (10) (10), and the insertion hole ( 30) A part of the retaining pin (2) that is not inserted in
It remains exposed from (32). By cooling in this state, the retaining pin (2) is in the through hole (32), the insertion part (10) is in the insertion hole (30), and the rubbing part (13) is in the handle.
It will be attached to (3) so that it will not come off.

[0010]

[Effect] The stopper pin (2) is melted by ultrasonic vibration and entangled with the insertion part (10) (10), so that the insertion part (10) (10)
Since it is attached to the insertion hole (30) of the handle (3) so as to prevent it from coming off, no strange odor occurs. Regarding the invention of claim 2, the invention of claim 2 solves the same problem as in claim 1 and makes the insertion end of the retaining pin (2) easily melted by ultrasonic vibration. Yes, the technical measure taken for that purpose was "to make a conical cutout on the insertion end side of the stop pin (2)".

[0011]

[Operation / Effect] Since a conical cutout is formed on the insertion end side of the stop pin (2), the cross-sectional area of the insertion end and its vicinity is small, and the insertion part (10) is correspondingly small. It becomes easily melted by frictional heat with (10).

[0012]

Embodiments of the present invention described above will now be described in detail with reference to the drawings. In the example of the present invention, similar to the rubbing portion of the conventional example, a single fiber such as synthetic resin fiber or syrup (11)
Wire between the two metal wires (1) (1),
(1) (1) constitutes a rod-shaped body, and the rod-shaped body is bent in a U-shape so that the wire rods (1) and (1) protruding at both ends of the rod-shaped body are bent in a U-shape to rub against each other (13). ) Is formed. The wire rods (1) (1) projecting to the open end side of the rubbing portion (13) become the insertion portions (10) (10) which are inserted into the insertion holes (30) of the handle (3).

The handle (3) is a rod-shaped body made of synthetic resin formed in a substantially rectangular cross section at least in the vicinity of the base end to which the rubbing portion (13) is attached, and in the vicinity of the base end, A rectangular parallelepiped insertion hole (30) opening at the center of the rectangular end face is provided along the longitudinal direction of the handle (3), and the depth of the insertion hole (30) of the rubbing portion (13) ( The protrusions 10 and 10 have substantially the same length and the width thereof is set so that the two insertion portions 10 and 10 can be fitted therein. From the open end of the insertion hole (30) on the upper surface side of the handle (3), as shown in FIG.
A supporting piece (31) for supporting the rubbing portion (13) during use is projected.

A through hole (32) is formed on the lower surface side of the handle (3) near the base end thereof so as to communicate vertically with the insertion hole (30). The through hole (32) is preferably opened in the middle of the depth of the insertion hole (30). As shown in FIG. 2, the retaining pin (2) to be inserted into the through hole (32) is made of synthetic resin and has a head portion (21) having a diameter larger than that of the through hole (32) and a through hole (3).
The shaft portion (22) has an outer diameter that is substantially equal to or slightly smaller than the diameter of 2), and a conical notch (20) is formed at the tip of the shaft portion (22).

In order to mount the rubbing portion (13) of this embodiment on the handle (3), first, the rubbing portion is inserted into the insertion hole (30) of the handle (3) as shown by the chain double-dashed line in FIG. Insert the insertion part (10) of (13). Next, as shown in the figure and FIG. 3, when the shaft portion (22) of the stop pin (2) is inserted through the through hole (32), the tip of the shaft portion (22) is previously inserted into the insertion hole (30). Inserted part (10) (1
Although it comes into contact with 0), in order to insert the stop pin (2) deeper, an ultrasonic welding device having ultrasonic vibration built therein is used.

That is, the head portion (21) of the retaining pin (2) is contacted by the output terminal (A) of the ultrasonic welding device until the lower end portion of the head portion (21) abuts the open end of the through hole (32). Forcibly push in the locking pin (2). Since the output terminal (A) is in an ultrasonic vibration state, this causes ultrasonic vibration to be transmitted from the head (21) to the tip of the shaft portion (22), and the shaft portion (22) made of synthetic resin The tip vibrates ultrasonically and rubs against the metal insertion parts (10) (10) in the insertion hole (30), and the frictional heat causes the shaft part (22) to sequentially melt from the tip. As shown in FIG. 4, the resin thus melted is entangled with the insertion portions (10) (10) and solidified in that state as shown in FIG. 4, so that the retaining pin (2) becomes the through hole (32). , Insert (10) (10)
Will be fixed in the insertion hole (30) in a retaining state. Therefore, the rubbing portion (13) is attached to the handle (3) in a state that it does not come off.

Although the retaining pin (2) and the handle (3) of this embodiment are both made of synthetic resin, the retaining pin (2) is made of AB.
It is desirable to use S resin or PS resin, and handle (3)
For this, PP resin is desirable.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory view of a retaining pin (2).

FIG. 3 is a view showing a process of inserting the retaining pin (2) into the through hole (32) X
-X sectional view.

FIG. 4 is an explanatory diagram when the insertion of the lock pin (2) is completed.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 (10) ・ ・ ・ Insertion part (13) ・ ・ ・ Sliding friction part (2) ・ ・ ・ Fixing pin (3) ・ ・ ・ Handle (30) ・ ・ ・ Insertion hole (32) ・ ・ ・ Through hole

Claims (2)

[Claims] 1. A rubbing portion (13) from which a metallic insertion portion (10) (10) projects and an insertion hole (30) having a depth substantially equal to the length of the insertion portion (10) (10). ) Formed of synthetic resin
(3) and the insertion part (10) (10) is formed into the insertion hole.
In the method for manufacturing a bundle with handle of the type that is inserted into (30) and attached in a retaining state, the metal insertion part (10) protruding to the rubbing part (13) is inserted into the insertion hole (30) of the pattern (3). ), The pattern
From the through hole (32) formed so as to communicate with the insertion hole (30) from the side surface of (3), attach the synthetic resin stop pin (2) to the insertion hole (30) with ultrasonic vibration applied. A manufacturing method of a bundle with a handle, wherein the insertion end portion of the retaining pin (2) is melted by inserting it into the handle. 2. The manufacturing method for a handle bundle according to claim 1, wherein a conical notch is formed on the insertion end side of the stop pin (2).