JP3620313B2 - Paper-linked fastener - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper connection type nail used for a building nailing machine or a paper connection type fastener such as a paper connection type screw used for an architectural screw tightening machine, and in particular, a nail at the time of nailing and screw tightening. The present invention relates to a paper-linked fastener that stabilizes the posture of a screw and a screw.
[0002]
[Prior art and problems to be solved by the invention]
In connection type fasteners such as so-called stick nails, which are so-called stick nails connected to large nails of about 65 mm to 90 mm used for 2 × 4 construction, etc., and toughness by mixing calcium carbonate with polypropylene. The nail and screw shafts are bonded via thermoplastic resin to a resin belt-linked fastener that is inserted through and connected to the belt of a resin material that has been lowered, and a reinforced paper tape such as kraft paper. A paper-coupled fastener or a wire-coupled nail in which a nail is coupled by spot welding to the upper and lower intermediate portions of the shaft portion of the nail is known.
[0003]
Among the above, the resin belt-coupled fasteners are crushed and divided by the driver of the nail driver or screw tightener hitting the nail or screw, and the crushed part of the resin belt is scattered around. It is considered inappropriate for indoor work. Similarly, wire-connected nails also have a problem that broken wires scatter around, and paper-connected fasteners that use less waste and less danger are often used.
[0004]
However, the thermoplastic resin adhesive used in paper-linked fasteners requires a strong bond to nails and screws, and therefore is made of a material that is tougher than the resin material of resin belt-linked fasteners. However, the amount of paper and resin that is scattered is small, but it is inferior to the resin belt in instantaneous disconnection.
[0005]
For this reason, as shown in FIG. 7A, when the paper connection type nail 1 is driven, when the driver 3 of the nail driver 2 hits the leading nail 5a in the nose 4, the paper tape 6 becomes ductile of the adhesive. As shown in FIG. 7 (b), the paper tape 6 is not instantaneously sheared and the head of the nail 5a moves forward as shown in FIG. 7 (c), and the tip of the nail 5a is moved forward. Becomes a posture approaching to the direction of the nail 5b in the next row, and the paper tape 6 is torn from the upper part toward the lower part.
[0006]
Due to this shearing property, as shown in FIG. 8 (d), the paper-connected nail 1 tends to land the nail 5 in an inclined posture, and the nail head can be driven vertically with a deviation from the position immediately below the driver 3. If not, or if it is severe, as shown in FIG. 8 (e), the driver 3 slips forward from the nail head and fails to nail, or the nail is bent in the nose 4 of the nailing machine 2. May be clogged. In addition, such an accident tends to occur more often when a short nail is driven or when a material having a high hardness and a large driving load is driven.
[0007]
The above phenomenon is exactly the same for paper-connected screws in which a number of screws are connected by paper tape. The screw in the nose of the screw tightener collides with the periphery of the screw chuck provided at the tip of the nose part, and the screw chuck It may get stuck in the nose without being introduced into it.
[0008]
Accordingly, there is a technical problem to be solved in order to stabilize the posture of the nail or screw when driving in the paper-coupled nail or the paper-coupled screw and to eliminate the risk of work mistakes. Aims to solve the above problems.
[0009]
[Means for Solving the Problems]
The present invention proposes to achieve the above-mentioned object, in which a plurality of nails are aligned in parallel, and a paper tape having an adhesive layer is attached to both side surfaces of shafts of the aligned nails and connected. In the paper-coupled fastener, the paper tape extends from a lower end portion of a front row nail and the paper tape to a top end portion of a rear row nail and the paper tape to the nail shaft portion. The present invention provides a paper-coupled fastener having inclined breakage guiding means and having the breakage guiding means arranged over the entire length.
[0010]
Further, in the paper-connected type fastener in which a plurality of screws are aligned in parallel and a paper tape having an adhesive layer is attached to both sides of the shaft portions of the aligned plurality of screws, the paper tape is connected to the front row of screws and the above-described screws. A break guide means extending from a lower end portion of the adhesive portion with the paper tape toward a rear row screw and an upper end portion of the adhesive portion with the paper tape and inclined with respect to the shaft portion of the screw; The present invention provides a paper-linked fastener that is arranged over a wide area.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a paper coupling type fastener 11 according to claim 1 in which nails 12 having a length of 65 mm, 75 mm or 90 mm used for 2 × 4 construction or the like are coupled by a paper tape 13.
[0012]
Similarly to the conventional paper-connected type fastener, the paper-connected type fastener 11 has, for example, about 25 nails 12 in parallel, and the first nail 12a (left in FIG. 1) to the next row of nails 12b, 12c,. A nail for stick nail, which is displaced upward and aligned, and has a paper tape 13 attached to both side surfaces of the shaft portion of the aligned nail 12, and is connected to the back surface of the nose 15 of the nailing machine 14 shown in FIG. When loaded in the magazine 16, the direction of the nose 15 of the nailing machine 14 and the direction of the nails 12 of the paper coupling type fastener 11 are formed substantially parallel to each other.
[0013]
A paper tape 13 shown in FIG. 1 is provided with an adhesive layer 17 made of thermoplastic resin on one side of a reinforced paper tape such as kraft paper impregnated with resin, nitrocellulose lacquer or the like, as in the conventional type, and aligned nails. It is heat welded to 12 shaft portions. A perforation 18 is formed in a portion between the nails of the paper tape 13 so as to be inclined from the lower end portion of the front row nail to the upper end portion of the rear row nail.
[0014]
As for the perforation, there are a method of forming the perforation 18 after bonding the nail 12 and the paper tape 13, and a method of bonding the paper tape 13 on which the perforation 18 has been previously formed to the nail 12, but in the case of pre-bonding molding In addition, there is a degree of freedom in the front and rear pitches, the number of perforations, the number of lines, the inclination angle, etc., and the productivity is good. Each of them has advantages such as being able to prevent the occurrence of the above, and is not limited to any one of the methods.
[0015]
Further, instead of the perforation 18, a perforation in which small holes are continuous at regular intervals may be formed. However, considering the smoothness when the fractured surfaces of the paper tape 13 are in sliding contact with each other when nailing, It is advantageous to reduce the unevenness, and it is considered that the perforation of a hole having a small diameter should be formed as much as possible.
[0016]
Next, the operation will be described based on the observation result of the nail driving experiment using the paper coupling type fastener 11. When the driver 19 of the nailing machine 14 strikes the nail 12a in the nose 15 as shown in FIG. 3A, the paper tape 13 provided with the perforations 18 is perforated as shown in FIG. The 18 parts are sheared as a whole at almost the same time, and are instantaneously sheared, unlike the paper tape of a conventional paper-linked fastener without perforations.
[0017]
And since the cut surface along the perforation 18 of the paper tape 13 is an inclined surface from the rear upper part to the front lower part, as shown in FIG. It is guided to the cutting surface and biased forward as a whole. As a result, the tip of the nail 12a is prevented from rotating backward (nail magazine side), and the head does not move further forward than the driver 19, as shown in FIGS. 4 (d) and 4 (e). In this way, it was confirmed that the nail 12a descended and landed while maintaining the vertical posture, and was completely driven to the nail head. Therefore, the nail 12 is driven at an angle and the driver 19 does not slip off the nail head, so that the driving failure can be almost eliminated.
[0018]
Next, the paper connection type fastener according to claim 2 in which screws are connected will be described. As shown in FIG. 5, the paper-connected fastener 21 has a number of screws 22 each having a single or a plurality of spiral strips formed on the shaft portion by a paper tape 23 like the paper-connected fastener 11 shown in FIG. 1. Concatenated. The paper tape 23 is disposed so as to be in contact with the screw thread of the screw 22, and is bonded to the screw 22 in a state where a part of the adhesive layer 24 enters the valley portion of the screw 22. The form of the positional relationship between the screw 22 and the paper tape 23 and the structure of the perforation 25 formed in the portion between the screw of the paper tape 23 are the same as those of the paper coupling type fastener 11 described above.
[0019]
A state of screw tightening when performing screw tightening using the screw tightening machine and the paper coupling type fastener 21 will be described with reference to FIG. As shown in FIG. 6A, when the screwdriver 26 of the screw tightener descends from the standby position and strikes the leading screw 22a of the paper-connected fastener 21 supplied in the nose 27, FIG. As shown in FIG. 4B, the paper tape 23 is broken along the inclined perforation 25 between the front and rear screws 22a and 22b, and the leading screw 22a is separated, as in the case of driving the nail described above.
[0020]
Since the separated screw 22a is guided forward along the inclined fracture surface of the paper tape 23, the tip end portion of the screw 22a does not rotate rearward and descends while maintaining the vertical posture. Therefore, the tip of the screw 22a does not collide with the opening edge of the chuck 28 or the inner wall surface of the nose disposed at the tip of the nose 27 of the screw tightener, and the screw 22a is reliably guided into the center hole of the chuck 28. Then, as shown in FIG. 6C, the driver 26 temporarily stops in a state where the tip of the screw 22a protrudes downward from the chuck 28.
[0021]
When the screw 22a is held by the chuck 28 and the driver 26, the tip of the screw 22a is positioned at the screwing position (for example, the screw hole of the reinforcing bracket) and the trigger of the screw tightening machine is further pulled. 26 is further lowered while rotating, and the screw 22a is rotationally driven to be screwed into the target material.
[0022]
Note that the present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and the present invention naturally extends to those modified ones.
[0023]
【The invention's effect】
As described above, the paper connected fastener of the present invention, the portion between the fastener paper tape for connecting the fastener, the bonding site of the front row of the fastener in the portion between the respective fastener is adhered with an adhesive layer A driver for nailing machines and screwing machines is provided with breakage inducing means such as perforations or perforations that are inclined from the lower end part to the upper end part of the adhesive part where the rear row fasteners are adhered by the adhesive layer. When the fastener is struck, the shear rate of the paper tape is fast, and the perforated surface is inclined with respect to the nail or screw so that the fracture surface becomes an inclined surface. It is guided by the fracture surface and descends in the nose while maintaining a vertical posture. Therefore, the fastener is hardly driven obliquely or bent in the nose, so that stability is improved and an effect of preventing work mistakes is exhibited.
[Brief description of the drawings]
FIG. 1 shows a paper-linked fastener according to claim 1, wherein (a) is a front view of the paper-linked fastener, and (b) is a cross-sectional view taken along line AA in (a).
FIG. 2 is a side view of a nailing machine.
FIGS. 3A, 3B, and 3C are explanatory views showing a driving process of the paper-linked fastener in FIG. 1, respectively.
4 (d) and 4 (e) are explanatory diagrams showing the driving process of the paper-linked fastener following FIG. 3, respectively.
5A and 5B show a paper coupling type fastener according to claim 2, wherein FIG. 5A is a front view of the paper coupling type fastener, and FIG. 5B is a cross-sectional view taken along line AA in FIG.
6A, 6B, and 6C are explanatory diagrams showing the driving process of the paper-linked fastener in FIG. 5, respectively.
FIGS. 7A, 7B, and 7C are explanatory diagrams showing a driving process of a conventional paper-connected fastener. FIG.
8 (d) and 8 (e) are explanatory views showing the driving process of the conventional paper-linked fastener following FIG. 7, respectively.
[Explanation of symbols]
11 Paper-Linked Fastener 12 Nail 13 Paper Tape 17 Adhesive Layer 18 Perforation 21 Paper-Linked Fastener 22 Screw 23 Paper Tape 24 Adhesive Layer 25 Perforation

Claims (2)

A paper-connected fastener in which a plurality of nails are aligned in parallel and connected by attaching a paper tape having an adhesive layer on both side surfaces of shafts of the aligned nails, the paper tape includes a front row of nails and the paper tape A break guide means extending from the lower end portion of the adhesion portion to the upper end portion of the adhesion portion between the rear row of nails and the paper tape, and inclined with respect to the shaft portion of the nail. A paper-linked fastener characterized by the arrangement of A paper-connected fastener in which a plurality of screws are aligned in parallel and connected by attaching a paper tape having an adhesive layer on both side surfaces of shafts of the aligned screws. The paper tape includes a front row of screws and the paper tape. A break guide means extending from the lower end portion of the adhesive portion to the upper end portion of the adhesive portion between the rear row screw and the paper tape and inclined with respect to the shaft portion of the screw, the break guide means extending over the entire length. A paper-linked fastener characterized by the arrangement of

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