JPH07238912A - Axial fastener connector - Google Patents

Abstract

PURPOSE:To dissolve possibility of feed failure of a fastener by improving buckling resistance and tear off strength of paper tape which is used on a fastener connector for an automatic tool in which an axial fastener such as a nail, screw, and the like are stuck on the paper tape. CONSTITUTION:A non-woven fabric 16 is stuck on the back surface of a paper sheet 15 such as a kraft paper sheet so as to form a laminated tape 12. Hot melt shaped adhesive agent 14 is applied on the surface of the paper sheet 15, heating screws 13, 13,... are pressure-attached thereto so as to form a fastener connector for fastening screws. When stroke is applied on the laminated tape 12 by a screw fastening machine, cracks on fiber of the paper sheet 15 is prevented by the non-woven fabric 16 having high tear off strength, so that buckling and crack may not be generated on the laminated tape 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft-shaped fastener connecting body in which shaft-shaped fasteners such as screws and nails used in an automatic screw tightening machine, an automatic nailing machine and the like are connected by a tape, and in particular, The present invention relates to improvement of a connecting tape.

[0002]

2. Description of the Related Art Conventionally, a magazine of an automatic screw tightening machine or an automatic nailing machine is used to store an axial fastener connecting body in which axial fasteners such as screws and nails are connected by winding it in a roll shape and tightening and screwing nails. It is known that work can be performed continuously. As an axial fastener coupling body used for this kind of automatic tool, there is one in which a hot-melt adhesive is applied to one surface of a paper tape, and screws and nails are adhered to the adhesive layer in a posture orthogonal to the longitudinal direction of the paper tape. .

During operation, when the axial fastener coupling body is sequentially pulled out from the magazine and the axial fastener such as a screw is driven into the object by the driver of the power tool, the axial fastener is forced from the paper tape. Then, the paper tape is discharged from the tape discharge port of the nose part of the power tool. For example, as shown in FIG. 3, when the screw 2 of the fastener connecting body 1 is peeled off from the paper tape 3 in the screw tightening step, the screw 2 and the adhesive holding the screw 2 are integrally formed from the paper tape 3. The surface layer of the paper tape 3 is peeled off together with the adhesive. At this time, since the upper edge of the paper tape 3 is hit by the head of the screw, the paper tape 3 buckles or cracks due to the shearing stress at the time of peeling and the hit of the screw 2, and the paper tape 3 is screwed. The tape may not be discharged from the discharge port 4 of the fastener machine, and the tape may be clogged.

[0004]

In the conventional axial fastener connecting body in which the axial fasteners such as screws and nails are adhered to the paper tape, tape jam may occur due to tearing or bending of the paper tape during work. Work is interrupted and it takes time and time to remove the jammed paper tape,
It will hinder the process.

Therefore, there arises a technical problem to be solved in order to prevent the buckling or cutting of the paper tape at the time of work and eliminate the risk of work interruption, and the present invention solves the above problem. With the goal.

[0006]

SUMMARY OF THE INVENTION The present invention is proposed to solve the above-mentioned problems, and a shaft portion of a shaft-shaped fastener such as a screw is bonded to one surface of a long paper tape with an adhesive. A shaft-shaped fastener connecting body in which shaft-shaped fasteners are arranged at regular intervals on the paper tape, and a non-woven fabric is attached to the back surface of the paper tape.

[0007]

[Function] When the shaft fastener coupling body stored in the magazine of the power tool such as a screw tightener is sent to the nose of the power tool and the driver of the power tool is driven, the shaft-shaped fastener such as the screw adhered to the tape The driver hits the head of the tape to separate the axial fastener from the tape and hits the object.
The tape to which the axial fastener is adhered has a laminated structure of paper with high buckling resistance and non-woven fabric with high edge tear strength, and the buckling resistance and edge tear strength are increased by the reinforcing effect of the non-woven fabric and non-woven adhesive layer. And the degree of tape deformation to buckling stress as the fastener is peeled from the paper with the adhesive and the paper surface is reduced. Further, the upper edge of the tape is not torn by hitting the upper edge of the tape with a head such as a screw, and when the stress is released, the former shape is restored.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A shaft-shaped fastener assembly used in an automatic screw fastening machine will be described below as an embodiment of the present invention. FIG. 1 shows a fastener connector 11 for a screw tightening machine,
The screws 13, 13, ... Are aligned on the surface of the laminated tape 12 at regular intervals. The screws 13, 13, ... Are the screws 13, 1
The shaft portion is adhered to the hot-melt adhesive 14 applied to the surface of the laminated tape 12 in a posture orthogonal to the longitudinal direction of the laminated tape 12 having a width narrower than the length of 3, ... 12 project above and below.

As shown in FIG. 1B, the laminated tape 12 is formed by bonding a synthetic fiber system such as nylon or a fiber such as rayon to the surface of a paper 15 such as kraft paper with a thermoplastic fiber. The non-woven fabric 16 is adhered and cut into strips, and the hot-melt adhesive 14 is applied to the surface. Then, the heated screws 13, 13, ... Are pressed against the adhesive layer 14 so that the hot melt adhesive 14 melted by the heat of the screws 13, 13 ,. It flows in and is hardened in the subsequent cooling process so that the screws 13, 13, ... Are bonded to the laminated tape 12.

During the screw tightening work by the screw tightening machine, as shown in FIG.
3, the hot melt adhesive 14 together with the screw 13 and the surface layer of the paper 15 are separated from the paper 15, and the head of the screw 13 hits the upper edge of the laminated tape 12, The non-woven fabric 16 adhered to the back surface of the paper 15 has no directionality of fiber arrangement and has high tear strength because the fibers are bonded by resin, and even if an impact exceeding the buckling resistance of the paper 15 is applied, Fiber breakage is prevented,
The laminated tape 12 is not torn. Therefore, after the screw 13 is driven, the laminated tape 12 returns to the pre-striking position by the restoring force of the paper 15 without causing edge tearing or buckling, and is discharged through the tape discharge port of the screw tightener.

The material of the paper 15 and the adhesive 14, the application pattern of the adhesive, and the like should not be limited to the one embodiment described above, and various modifications can be made. Further, although not shown, it is possible to easily provide a fastener connecting body for a nailing machine by adhering a nail to the laminated tape 12 instead of the screws 13, 13, ... It goes without saying that it extends to all things.

[0012]

As described in detail in the above one embodiment, the present invention has a laminated structure of a tape and a non-woven fabric, which is a holding carrier of a shaft-shaped fastener, and therefore has a restoring force due to the strength of the paper strainer. The high tear strength of the non-woven fabric complements each other's weaknesses to prevent bending and tearing of the tape due to the impact of a screwdriver such as a screw tightening machine, and there is a risk of work efficiency deterioration due to defective feeding of the axial fastener connection body. Can be eliminated,
It can contribute to the improvement of reliability.

[Brief description of drawings]

1A and 1B show a fastener connecting body for a screw tightening machine of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a sectional view taken along the line AA of FIG.

FIG. 2 is an explanatory diagram showing a state where a screw is peeled off from the laminated tape.

FIG. 3 is an explanatory diagram showing breakage of a tape, showing a conventional example.

[Explanation of symbols]

 11 Fastener Connection for Screw Tightening Machine 12 Laminated Tape 13 Screw 14 Hot Melt Adhesive 15 Paper 16 Nonwoven Fabric

[Procedure amendment]

[Submission date] February 24, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

FIG. 1 shows a fastener coupling body for a screw tightener of the present invention, (a) is a front view and (b) is a side sectional view .

Claims (1)

[Claims] 1. A shaft-shaped fastener connecting body in which a shaft portion of a shaft-shaped fastener such as a screw is adhered to one surface of a long paper tape with an adhesive agent, and the shaft-shaped fasteners are arranged on the paper tape at regular intervals. And a non-woven fabric attached to the back surface of the paper tape.