JPH0721923Y2 - Nail connecting band for nailer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a nail connecting band for a nailing machine, which is formed by bending a long synthetic resin sheet into a U-shape and connecting a large number of nails. is there.

(Prior Art and Problems Thereof) In general, a connected connecting nail in which two opposing nail holding portions of a connecting band formed by bending a plastic sheet are formed and the nail holding portion is inserted and supported by the nail holding portion is provided. It is known (for example, Japanese Utility Model Publication No. 57-94708). In this connection nail,
A sufficiently large gap is provided so that the head of the nail to be driven in and the holding member supporting the adjacent nail are not affected by the driver member striking the head. Therefore, there is a problem that the number of nails loaded in the tool magazine is small.

Therefore, the inventors of the present invention formed holding openings for holding the shafts of nails at equal intervals along the connecting direction of the nails in the nail holding openings of a synthetic resin sheet that was formed into a substantially U-shaped bend. We proposed a connecting band in which slits continuous with the opening are formed on both side edges of the holding opening (Japanese Patent Application No. 63-121247).

According to the above technique, it is possible to increase the number of connected nails per unit length, but when the front nail is driven, the nail opening of the rear nail adjacent to the head of this nail is also increased. Since it is often destroyed, the foremost nail is held in an unstable state by the connecting belt.For example, when replacing the nail loaded in the nailing machine during the work, the foremost nail separates from the connecting belt. There is an inconvenience that it is wasted.

Further, since the part where the holding opening is broken by the head of the nail is set to one side edge of the holding opening, the nail N held on the connecting band 20 as shown in FIG. When it is driven out, the connecting strip 20 is ruptured to the left and right as shown in FIG. 7 (b), so that the ruptured piece 20a is formed to be long and drastically deforms and hangs down. Edge 22 of opening 22
When it hits a, it hinders the discharge of the connecting belt 20 and hinders normal nail feeding.

(Technical problem of device) The number of nails per unit length can be increased by decreasing the pitch of nail connection, and at the same time, when the front nail is driven in, the nail head of the next nail is A nail that does not affect the holding opening at all, can always reliably hold the foremost nail, and does not hinder the nail supply by discharging the connecting belt from the connecting belt discharging opening of the nailing machine satisfactorily. It is a technical subject to provide a connecting band of nails for a driving machine.

(Means for Solving the Problems) In order to solve the above problems, a nail connecting body according to the present invention has a nail shaft formed on two opposing pieces of a synthetic resin sheet formed into a substantially U-shape. A connecting band in which holding openings for holding substantially the entire outer circumference of the portion are formed at equal intervals along the longitudinal direction of the sheet, and a direction perpendicular to the connecting direction of the nails is provided between the holding openings adjacent to each other in the front and rear. A slit extending in the direction between the front edge of each slit and the holding opening in front of the slit, the sheet in the direction passing through the center of the holding opening and along the connecting direction of the nails. While forming a weak portion that can be cut, the rear edge of each slit allows the rear nail to pass through the head of the front nail held in the holding opening in front of the slit. It is characterized in that it swells to the holding opening side.

(Operation and effect of the invention) With the above configuration, when the nail held in the connecting band is struck in the nailing machine, the nail supporting wall portion above the connecting band is pushed out by the head of the nail, but the vertical rib Is supported by the guide part of the magazine, the upper nail support wall is held at the same position, while the holding opening is deformed so as to be expanded, so that the weak part (notch Part) is cut. As a result, the portion between the front and rear slits of the holding opening is pushed downward by the head of the nail, is bent to the left and right and is divided, and the head of the nail passes between them. Moreover, at this time, since the rear side edge of the slit bulges toward the holding opening on the rear side of the slit so as to allow the head of the front nail to pass, The trailing edge does not contact the rear supporting wall. For this reason,
The rear nail is not affected by the passage of the front nail, and its supporting state is maintained well.

The head portion of the nail that has passed through the upper nail supporting wall portion is similarly deformed in the lower nail supporting wall portion to separate from the connecting band.

The connecting strip is sent out of the nailing machine through the front opening of the magazine every time one nail is driven. In this case, the connecting strips are discharged while keeping the same vertical wall portion, supporting wall portion and vertical ribs as they were when they entered the magazine, and they do not bend in the middle, so the end portions are nailed. Good discharge is achieved without being caught on the edge of the connection belt discharge opening of the driving machine.

As a result, the number of nails per unit length can be increased by reducing the pitch of nail connection, and at the same time when the nail of the preceding position is driven, the head of the nail allows the opening of the next nail to be retained. There is no influence at all, the foremost nail can always be reliably held, and the connecting belt can be discharged well from the connecting belt discharge opening of the nailing machine.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 (a) and (b), reference numeral 1 shows a connecting band for a nailer. The connecting band 1 is formed by bending a synthetic resin sheet from a vertical wall portion 1a and two pieces of nail supporting wall portions 1b facing each other by projecting in the same direction from the upper and lower ends of the vertical wall portion 1a. The holding openings 2 for holding substantially the entire outer circumference of the shaft portion of the nail N are formed at equal intervals along the longitudinal direction of the sheet. In addition, vertical ribs 3 for reinforcement are formed so as to hang down from the respective end edges of the opposed nail support wall portion 1b. This is to prevent the bending deformation from occurring due to the pressing force of the pusher of the nailing machine, which will be described later, and to receive the load when the connecting band is cut by the head of the nail being driven. Further, the left side is the front part and the right side is the rear part as viewed in the drawing.

Next, a slit 4 extending in a direction orthogonal to the nail connecting direction is formed between the holding openings 2 adjacent to each other in the front and rear. Between the front side edge of each slit 4 and the holding opening portion 2 in front of the slit 2, a weak portion that can cut the sheet in a direction passing through substantially the center of the holding opening portion 2 and along the nail connecting direction. (Notch) 6 is formed.

On the other hand, the rear edge of each slit 4 allows passage of the head h of the front nail N1 held in the holding opening 2 in front of the slit 4, as shown in FIG. Thus, the rear nail N2 is bulged toward the holding opening 2 side to form a bulged portion 5.

Further, the holding opening 2 and the bulging rear side edge of the slit 4 arranged on the front side thereof are formed as a continuous opening 7. Such an opening 7 may be formed in a groove shape over the entire length as shown in FIG.

Further, slits 8 are formed in the vertical wall portion 1a of the connecting band 1 at equal intervals with the nails 2 to be connected. The slit 8 is formed for the purpose of engaging the tip of a pusher described later and stealing the material when the connecting strip 1 is loaded into the nailing machine, and is convenient for cutting the connecting strip 1 on the way. It has been done.

When holding the nail for the nailing machine in the connecting belt 1 having the above-described structure, the nail may be inserted into the holding openings 2 of the nail holding portions 1b which are paired with each other above and below the connecting belt 1. In this case, the connecting strip 1 has a holding opening 2 and a slit 4 arranged on the front side thereof.
Is formed as a continuous opening with the bulging rear end edge of the nail, the tip of the nail is retained in the opening when the nail having the inverted V-shaped tip is inserted into the connecting band 1. Insertion can be facilitated by guiding to 2. If the holding opening 2 and the slit 4 are not continuous, the inverted V-shaped tip of the nail is caught between the holding opening 2 and the slit 4 and breaks from the weak portion (notch 6 portion) of the holding opening 2. In addition, since the sheet is deformed at this time, there is a possibility that the holding of the nail becomes unstable.

The head h of the nail held in the holding opening 2 as described above is
The rear edge is held so as to be positioned in front of the rear end edge of the bulging portion 5 of the slit 4 positioned rearward of the opening 2.

Next, as shown in FIGS. 5 and 6, the connecting band 1 having the above structure is loaded into the magazine 9 of the nailing machine. The magazine 9 is formed corresponding to the cross-sectional shape of the connecting strip 1, and the guide portions 10 of the lower end of the vertical wall portion 1a and the upper and lower vertical ribs 3 are formed.
a, 10b and 10c are provided. Each guide part 10a, 10c and 10b
Is formed up to the vicinity of the injection part 11 connected to the front end of the magazine 9. Further, a connection belt discharge opening 12 is formed in the front portion of the injection portion 11 so as to correspond to the guide portion. In addition, the connecting strip 1 is attached to the magazine 9 by the injection portion 9 of the nailer.
A pusher 13 is provided for sending to.

When the nail connecting belt 1 is loaded from the rear of the nailing machine magazine 9 and the connecting belt 1 is pushed forward by the pusher 13, the leading nail is sent into the injection section 11 of the nailing machine and its head h and It stops when the front surface of the shaft portion engages with the inner wall of the injection portion 9. As a result, the driving operation by the striking driver 14 is prepared.

When the nail in the injection portion 9 is hit by the hitting driver 14, the head h of the nail is first pushed down, so that the nail supporting wall portion 1b at the upper part of the connecting band 1 is pushed downward by the head h of the nail. However, since the vertical rib 3 is supported by the guide portion 10b of the magazine 9, the upper nail supporting wall portion 1b is held at the same position,
On the other hand, since the holding opening 2 is deformed so as to be expanded, the weak portion (notch 6 portion) passing through the center thereof is cut. As a result, the portion between the front and rear slits 4 of the holding opening 2 is pushed downward by the head h of the nail,
As shown in the figure, it is bent left and right and divided, and the head h of the nail passes between them. Moreover, at this time, a bulging portion 5 bulging toward the holding opening 2 behind the slit 4 is formed on the rear side of the slit 4 so as to allow the head h of the nail having the above potential to pass therethrough. (See FIG. 3), the trailing edge of the nail head h does not come into contact with the rear support wall portion 1b. Therefore, the support state of the nail at the rear is not affected by the passage of the nail, and can be maintained satisfactorily.

The head h of the nail that has passed through the upper nail supporting wall portion 1b is similarly deformed in the lower nail supporting wall portion 1b and is separated from the connecting band 1.

After the nail is driven out, the striking driver 14 makes a return movement, and the nail supporting wall portion 1b also returns to the substantially original position by the elastic return force. At the same time, the connecting band 1 is pushed in until the leading nail after driving again engages with the inner wall of the ejection portion 9. This head nail is driven in the same manner by the operation of the next striking driver 14. Thereafter, the nails are sequentially driven in the same manner, and the connecting belt 1 is sent out of the nailing machine through the discharge opening 12 of the magazine 9 every time one nail is driven. In this case, the connecting strip 1 is discharged while keeping the same vertical wall portion 1a, supporting wall portion 1b, and vertical rib 3 as when it was inserted in the magazine 9, so that it does not bend in the middle. The end is not caught on the edge of the connection belt discharge opening 12 of the nailing machine, and is discharged well.

[Brief description of drawings]

FIG. 1 is a perspective view of a connecting strip of a nailing machine according to the present invention, FIGS. 2 (a) and 2 (b) are a developed view and a partial sectional view of the connecting strip, and FIG. FIG. 4 is an enlarged view of a portion, FIG. 4 is an explanatory view of another example of the opening portion of the connecting belt, FIG. 5 is an explanatory view showing a state in which the connecting belt is loaded in the magazine of the nailing machine in section,
FIG. 7 is a vertical cross-sectional view showing a state in which the connecting band 1 is loaded in the magazine, FIG. 7 is an explanatory view of a nail ejection mode, and FIG. 8 (a).
(B) is an explanatory view of the discharge mode of the conventional connecting band. Reference numeral N ... Nail, 1 ... Connection band, 2 ... Holding opening, 4 ...
… Slits, 5 …… Bulging parts, 6 …… Weak parts (notches)

Claims (1)

[Scope of utility model registration request] 1. A holding opening for holding substantially the entire outer circumference of a shaft portion of a nail is formed on two opposing pieces of a synthetic resin sheet formed into a substantially U-shape at equal intervals along the longitudinal direction of the sheet. A slit extending in a direction orthogonal to the nail connecting direction is formed between the holding openings adjacent to each other in the front and rear, and the front side edge of each slit and the holding opening in front of the slit are formed. Between the department,
While forming a weak portion capable of cutting the sheet in a direction passing through substantially the center of the holding opening and along the connecting direction of the nails, the rear side edge of each slit is held in the holding opening in front of the slit. A connecting band for a nailer for nailing, characterized in that it is bulged toward the holding opening side of the rear nail so as to allow the head of the front nail to pass.