JP2000240622A - Nail connecting sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a nail from slipping off from a nail connecting sheet during transporting the nail connecting sheet. SOLUTION: A circular hole 13 is formed on a lower tab 12L of a nail connecting sheet made of plastic 11. A V-shape groove 14 is formed from the hole 13 to an external edge facilitating splitting of the tab when a nail is hammered in. An upper tab 12U and the lower tab 12L are folded at right angle, and a nail is inserted into a hole 15 and the hole 13 of the upper and the lower tabs to form nails connected by a sheet. Since the hole 13 of the lower tab 12L does not have an opening communicating to the side face, if the tip of the nail comes in contact with a surrounding object during transporting, the nail will not come off from the lower tab 12L.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nail connecting sheet made of plastic for connecting nails used in a nailing machine, and more particularly to a nail connecting sheet having an increased nail holding force.

[0002]

2. Description of the Related Art In order to continuously supply nails to a nailing machine, a plurality of nails are connected at regular intervals, and the connecting nails are attached to a plastic nail connecting sheet. There are known plastic sheet connecting nails, wire connecting nails in which a nail is welded to an iron wire, and paper connecting nails in which a nail is bonded to a kraft paper sheet.

As shown in FIG. 6, a nail connecting sheet 1 made of plastic is a long band-like member extending left and right, and tabs 2U and 2L are arranged at regular intervals on both upper and lower edges.
L is formed with a hole 3 for inserting a nail and a nail insertion port 4 opened to the outer periphery of the tabs 2U and 2L and leading to the hole 3. Then, as shown in FIG. 7, the upper and lower tabs 2U and 2L are bent at right angles to have a U-shaped cross section, and the nail N is inserted into the hole 3 from the side through the nail insertion opening 4, and the upper and lower tabs 2U and 2L are used. It is configured to hold a nail. Then, the nail is spirally wound, housed in a cardboard case or the like, and transported.

However, when transporting a nail-connecting sheet on which a nail is mounted, or when loading a nail into a magazine of a nailing machine, a nail wound in a state in which the distal end portion of the nail N is caught by a surrounding object. Due to the entire movement, the nail N often comes off from the lower tab 2L holding the intermediate portion of the nail N. This is due to the fact that the elasticity of the hole portion of the lower tab was weakened and a sufficient holding force could not be obtained. If the nail comes off the tab and the nail is incompletely held, the nail feed nail of the nail driver will not be able to send the nail,
The nail cannot be hit perpendicularly, causing the nail to bend and jam in the nose of the nailer.

[0005] Therefore, there is a technical problem to be solved in order to prevent the nail from coming off from the tab of the nail connection sheet and to eliminate the possibility of a poor nail feed or a clogged nail. The purpose is to solve.

[0006]

SUMMARY OF THE INVENTION The present invention proposes to achieve the above object. Tabs are arranged at regular intervals on both upper and lower edges of a horizontally long strip-shaped plastic sheet.
A hole for inserting a nail in the lower tab, a notch, a slit or a V-shaped groove or the like, is formed in a peripheral portion of the hole, and a hole for inserting the nail in the upper tab and an outer periphery of the tab are formed. Form a nail insertion opening that opens to the surface and connects to the hole, bends the upper and lower tabs at right angles, inserts the nail into the holes in the upper and lower tabs, holds the nail, and the nail driver Provided is a nail connecting sheet formed such that when hit, the tear guiding portion of the lower tab is torn and the nail comes off the lower tab, and the nail is ejected from the upper tab through the nail insertion opening of the upper tab. Things.

Also, tabs are arranged at regular intervals on both upper and lower edges of the horizontally long strip-shaped plastic sheet, holes for inserting nails are formed in the upper and lower tabs, and notches or notches are formed in the peripheral portions of the holes of the upper and lower tabs. A tab break induction part such as a slit or V-shaped groove is formed, the upper and lower tabs are bent at right angles, the nail is inserted into the holes of the upper and lower tabs, and the nail is held. It is intended to provide a nail connecting sheet formed such that when the tabs are broken, the tab tearing guides of the upper and lower tabs are torn and the nails are ejected from the upper and lower tabs.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a plastic nail connecting sheet 11, similar to a conventional plastic nail connecting sheet, in which tabs 12U and 12L are arranged at regular intervals on both upper and lower edges of a long strip sheet to the left and right. A hole 13 having a diameter equal to or slightly smaller than the diameter of the nail is formed in the tab 12L. As shown in FIG. 2, a groove 14 having a V-shaped cross section is formed on the surface of the tab 12L from the hole 13 to the outer edge. Further, as shown in FIG. 1, a hole 15 for holding a nail shaft and a nail insertion port 16 leading from the outer peripheral surface of the tab 2U to the hole 15 are formed in the upper tab 12U.

Similarly to the conventional nail connection sheet, the upper and lower tabs 12U and 12L are bent at right angles to make the nail connection sheet 11 into a U-shaped cross section, and the nail is formed from above the nail connection sheet 11 by the upper and lower tabs 12U and 12L. Upon insertion into holes 13, 15, the nail is held by upper and lower tabs 12U, 12L.

[0010] Even if the tip of the nail comes into contact with the surroundings and is pulled or pushed during transportation or the like, the nail is disengaged from the lower tab 12L because the lower tab 12L has no opening through which the nail can be pulled out. Since the nail is held in the middle by the lower tab 12L, the upper portion hardly comes off the upper tab 12U.

The V-shaped groove 14 of the lower tab 12L is
2L is provided so as to be easily torn, and when the nail is hit by the driver of the nailing machine, the nail is disengaged from the upper tab 12U through the nail insertion opening 16 of the upper tab 12U, and the V of the lower tab 12L is changed. The nail is detached from the upper and lower tabs 12U and 12L, and the nail is ejected.

As means for facilitating the breaking of the lower tab 12L, in addition to the V-shaped groove 14, as shown in FIGS. 3 (a) and 3 (b), the outer edge or the hole 13 of the lower tab 12L is formed. A semicircular notch 17 may be cut out at the periphery, or a V-shaped notch 18 may be cut out at the outer edge of the lower tab 12L or the periphery of the hole 13 as shown in (c) and (d). f)
A linear slit 19 may be cut as shown in FIG.

FIG. 4 shows a modified example of the hole shape, in which (a) is a cross-shaped hole 20, (b) is a star-shaped hole 21, and (c) is a flower-shaped hole 22. (D) cuts a number of radial slits 23 from the round hole 13 and (e).
Is formed by forming an elliptical hole 24 in place of the round hole 13 and holding the nail N at the inner peripheral portion of the elliptical hole 24 in the minor diameter direction. (F) has radial grooves 25 formed in four directions from the round hole 13, and (g) has a smaller diameter round hole 26 formed at the tip of the radial groove 25 in the four directions.

In the various hole shapes shown in FIG. 4, the holes 20, 21, and 22, which are the narrowest portions of the tab 12L, are formed.
The maximum diameter portions 2 and 24 and the slit 23 or the groove 25 are locations where the rupture is induced. Further, the frictional resistance when inserting the nail is reduced as compared with the case of the round hole, so that the nail can be easily inserted.

As shown in FIG. 5, the upper tab 12U
Also, similarly to the lower tab 12L, a tear guiding portion such as the V-shaped groove 14 may be provided so that the conventional nail insertion opening is eliminated.

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 it goes without saying that the present invention extends to those modifications. is there.

[0017]

As described above, in the nail connecting sheet of the present invention, at least the lower tab does not have a nail insertion hole extending from the hole through which the nail is inserted to the outer edge of the tab. Since the nail is held around the circumference, the nail does not come off the tab even if the tip of the nail hits or is pulled around, and the possibility of poor feeding of the nail or clogging of the nail is eliminated.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention, in which a nail connecting sheet is developed.

FIG. 2 shows a lower tab of the nail connection sheet of FIG. 1;
FIG. 2 is a front view, and FIG. 2B is a view taken along line AA of FIG.

FIGS. 3 (a), (b), (c), (d), (e), and (f) are front views each showing a modified example of a tear induction portion of a tab.

FIG. 4 (a) (b) (c) (d) (e) (f) (g)
9 is a front view showing a modified example of the hole shape of each tab.

FIG. 5 is a front view showing another embodiment of the present invention, in which a nail connecting sheet is developed.

FIG. 6 is a front view showing a conventional example, in which a nail connecting sheet is developed.

FIG. 7 shows a conventional example, and is a side view of a nail connection sheet.

[Explanation of symbols]

 11 Nail connection sheet 12U Upper tab 12L Lower tab 13 hole 14 V-shaped groove 15 hole 16 Nail insertion port N nail

Claims (2)

[Claims] 1. Tabs are arranged at regular intervals on both upper and lower edges of a horizontally long strip-shaped plastic sheet, holes for inserting nails are formed in lower tabs, and notches, slits or V-shaped portions are formed in peripheral portions of the holes. Forming a rupture induction part such as a groove, forming a hole for inserting a nail in the upper tab and a nail insertion opening that opens to the outer peripheral surface of the tab and leads to the hole, bending the upper and lower tabs at right angles The nail is inserted into the holes in the upper and lower tabs to hold the nail, and when the nail is hit by the driver of the nail driver, the tear guiding portion of the lower tab is torn and the nail comes off the lower tab, and the nail is removed from the upper tab. A nail connecting sheet formed so that the nail is ejected from the upper tab through the nail insertion opening. 2. Tabs are arranged at regular intervals on both upper and lower edges of a horizontally long strip-shaped plastic sheet, holes for inserting nails are formed in the upper and lower tabs, and notches or notches are formed in peripheral portions of the holes of the upper and lower tabs. A tab break induction part such as a slit or V-shaped groove is formed, the upper and lower tabs are bent at right angles, the nail is inserted into the holes of the upper and lower tabs, and the nail is held. A nail connection sheet formed such that when the tabs are broken, the tab tearing guides of the upper and lower tabs are torn and the nails are ejected from the upper and lower tabs.