JP2001277149A - Nail in magazine of nailing machine, and guide structure for pusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a flaw from occurring in a surface of a guide passage of a magazine even if specially expensive surface treatment is not applied to the magazine. SOLUTION: The magazine 4 provided for a part of a nailing machine body has the guide passage 14 comprising a dovetail-groove-like upper groove 16 for guiding the sliding of the head 5p of a connection nail 5 and a T-shaped top 12 of a pusher 7, a nail shaft part 5q, and a lower groove 19 for guiding the lower part of a plate-like pressing part 7a of the pusher. A nail in the guide passage 14 is guided and supplied by the pusher 7 to a nose part 1 provided at the tip of the nailing machine body. Guide members 10, 11 having abrasion resistance higher than that of the guide passage 14 are formed in the longitudinal direction of the guide passage 14 on the inner peripheral surface of the upper groove 16 of the guide passage 14 and both-side inner wall surfaces of the lower groove 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide structure for guiding a connecting nail in a guide passage of a magazine of a nailing machine and a pusher for pushing the nail toward a nose.

[0002]

2. Description of the Related Art In general, a magazine of a nailing machine is one in which a connecting nail loaded inside is pressed and supplied to a nose portion side by a pusher, so that the magazine includes a connecting nail and a connecting nail. A guide passage is formed to guide the slide of the pusher that presses the nose of the percussion machine. Since the guide passage is a common guide means for the connecting nail and the pusher, the connecting nail and the pusher move while sliding on the inner wall surface of the guide passage when sliding.

[0003] Magazines are usually made of aluminum or an alloy thereof and have relatively low wear resistance and strength. In contrast, iron connecting nails and pushers are surface-treated. The surface treatment of the connecting nails is low in cost and the strength is not so strong, but the pusher slides frequently every time the nail is fed or loaded, so it is hardened to prevent wear. ing. Therefore,
Since the surface of the pusher is harder than the surface of the guide groove,
The surface of the guide passage is damaged due to the overlap of the sliding of the pusher. These scratches have become a resistance to nail feeding, and have caused poor feeding. Therefore, the magazine had to be surface-treated.

[0004]

However, the surface treatment of the magazine is expensive, and the number of manufacturing steps increases accordingly, which raises the problem of increasing the cost.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks and makes it possible to prevent the surface of the guide passage of the magazine from being easily damaged without applying a special expensive surface treatment to the magazine. It is an object of the present invention to provide a guide structure.

[0006]

In order to solve the above-mentioned problems, a guide structure for a nail and a pusher in a magazine of a nailing machine according to the present invention is connected to a magazine provided in a part of the nailing machine main body. A guide passage having a dovetail-shaped upper groove for guiding sliding between the nail head and the T-shaped top of the pusher, and a lower groove for guiding a nail shaft portion and a lower portion of the plate-shaped pressing portion of the pusher is formed. In a nailing machine for feeding and guiding a nail in the guide passage to a nose portion provided at the tip of the nailing machine main body by a pusher, on the inner peripheral surface of the upper groove and the inner wall surfaces on both sides of the lower groove of the guide passage, A guide member having higher wear resistance than the guide passage is formed along the longitudinal direction of the guide passage.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 indicates a nose portion of a nailing machine. The nose portion 1 is a cylindrical member extending below the nailing machine main body 2 and guides the sliding of a driver 3 driven by a hitting mechanism (not shown) provided on the nailing machine main body 2. At the same time, the leading nail 5a of the connecting nail 5 loaded in the magazine 4 is housed at the leading end of the magazine 4 to guide the leading nail 5a hit by the driver 3 in the launching direction. ing.

[0008] The connecting nail 5 is formed by connecting a large number of iron nails 5n to the connecting material 6.
And the heads 5p of the nails 5n are connected in an overlapping state. The connecting member 6 is made of a material such as a synthetic resin, a wire, and paper. The connecting nail 5 loaded in the magazine 4 is slightly inclined backward with respect to the nose portion 1. Note that the connecting nail 5 may not be the above-described eccentric nail but may be a nail having a circular head connected via a connecting material in an overlapping state.

The magazine 4 is made of aluminum, and has a pusher 7 disposed therein. The pusher 7 always presses the connecting nail 5 forward by a spring (not shown) and supplies it to the nose part 1. As shown in FIG. 2, a constant output spring 8 ( (See FIG. 1). A T-shaped top 12 having a T-shaped cross section is formed at the upper end of the pressing portion 7a.
The lower part 7a1 of the plate-shaped pressing part 7a is formed to extend below the lower part. The front end surface 13 of the pressing portion 7a is formed as an inclined surface having the same inclination as the inclination of the connecting nail 5 loaded in the magazine 4, and its thickness is smaller than the diameter of the nail shaft portion of the connecting nail 5. It is formed so that it becomes. One end of the constant output spring 8 is fixed to the front end of the magazine 4.

Next, as shown in FIGS. 2 and 3, a guide passage 14 for slidably guiding the connecting nail 5 and the pusher 7 is formed in the center of the magazine 4 along the longitudinal direction. I have. One side wall of the intermediate portion of the guide passage 14 is formed with a bulging portion 15a which bulges laterally so as to receive the box-shaped storage portion 9 of the pusher 7, and the other side wall has the swelling portion 15a.
The opening 15b is formed such that is exposed to the side. Further, the T of the pusher 7 is
Upper groove 1 for guiding the top 12 and the nail head 5p of the connecting nail 5
6 are formed in a groove shape. Further, a narrow lower groove 19 is formed at a lower portion of a portion for housing the box-shaped storage portion 9. The interval between the lower grooves 19 is set to be substantially the same as or slightly larger than the diameter of the lower portion 7a1 of the plate-shaped pressing portion 7a of the pusher 7 and the nail shaft portion 5q of the connecting nail 5.

The upper groove 1 of the guide passage 14
An upper guide member 10 and a lower guide member 11 made of iron are formed over the entire length along the longitudinal direction of the inner guide surface 6 and the inner wall surfaces on both sides of the lower groove 19. Therefore, the guide member 10 has high wear resistance, and the connecting nail 5
And may be equal to or larger than the pusher 7. The lower guide member 11 may have a plate shape instead of a round bar shape.

According to the above construction, the nail head 5p of the connecting nail 5 loaded in the magazine 4 and the T-shaped top 12 at the upper end of the pusher 7 are accommodated in the upper groove 16, and the nail shaft of the connecting nail 5 The upper part of the part 5q and the box-shaped storage part 9 of the pusher 7 are
Housed inside. Further, the lower portion of the nail shaft portion 5q of the connecting nail 5 and the lower portion 7a1 of the plate-shaped pressing portion 7a of the pusher 7 are accommodated in the lower groove 19. At this time, the connecting nail 5 and the pusher 7 are suspended with the nail head 5p and the T-shaped top 12 engaged with the upper groove 16. Since the front end of the magazine 4 is open to the nose part 1, the leading nail 5a of the connecting nail 5 is pressed by the pusher 7 and supplied to the nose part 1, and the leading nail in the nose part 1 when the striking mechanism operates. 5a is hit by the driver 3 and is driven out of the nose portion 1. When the driver 3 returns, the next leading nail is sent to the nose portion 1. At the time of nail feeding, the pusher 7 and the connecting nail 5 are connected to the magazine 4
Slide inside.

As described above, when the pusher 7 and the connecting nail 5 slide in the magazine 4, the pushers 7 and the connecting nails 5 come into contact with the guide members 10 and 11 due to vertical play and left / right swing. However, looking at this in detail, the right and left deflection of the head of the connecting nail 5 occurs at the portion (a) or (b) of FIG. 4, and the deflection at the lower portion of the nail shaft portion 5q is (c) of the same drawing. Occurs in the part. The rattling of the upper part (T-shaped top part 12) of the pusher 7 occurs at the parts (d) and (e) of FIG. Of the pusher 7 (the lower portion 7 of the plate-shaped pressing portion 7a).
The left and right swing of a1) occurs in the portion (c). However, all of the above parts (a) to (e) are the guide members 1
The guide members 10 and 11 have higher strength and abrasion resistance than the pusher 7 and the connecting nail 5, so that the guide members 10 and 11 are slippery and are less likely to be damaged by contact. Therefore, the feeding performance of the connecting nail 5 is not easily deteriorated even when used for a long time.

As described above, the guide member 10 having the same or higher wear resistance than the connecting nail and the pusher is provided on the inner peripheral surface of the upper groove 16 and the inner wall surfaces on both sides of the lower groove 19 of the guide passage 14. , 11 are formed along the longitudinal direction of the guide passage, so that when the connecting nail 5 is slid in the guide passage 14, the sliding performance is better than before, and the feeding performance of the connecting nail 5 can be improved. , Connecting nail 5 and pusher 7
Since the guide members 10 and 11 are not easily damaged during sliding, the magazine 4 does not need to be subjected to a special expensive surface treatment, and the cost does not increase.

Further, since the guide members 10 and 11 come into contact with the connecting nail 5 and the pusher 7 when sliding, the guide passage 14 itself is not necessarily made of aluminum but can be replaced with a synthetic resin.

The material of the guide member is not limited to iron, as long as it is the same as or higher in strength and wear resistance than the connecting nail and the pusher.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view around a nose portion of a nailing machine.

FIG. 2 is a sectional view of a magazine of a pusher portion.

FIG. 3 is a sectional view of a magazine of a nail portion;

FIG. 4 is an explanatory view of a portion where a connecting nail and a pusher come into contact during sliding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 Magazine 5 Connecting nail 7 Pusher 7a Plate-shaped pressing part 10, 11 Guide member 12 T-shaped top part 14 Guide passage 16 Upper groove 19 Lower groove

Claims (1)

[Claims] 1. A magazine provided in a part of a nailing machine main body, a dovetail-shaped upper groove for guiding the head of a connecting nail and a T-shaped top of a pusher, and a plate-like pressing of a nail shaft and a pusher. A guide passage provided with a lower groove for guiding a lower portion of the nailer, and a nailer in the guide passage for guiding and supplying a nail in the guide passage to a nose portion provided at a tip of the nailer body by a pusher; A guide member having the same or higher wear resistance than the connecting nail and the pusher is formed along the longitudinal direction of the guide passage on the inner peripheral surface of the upper groove and the inner wall surfaces on both sides of the lower groove of the guide passage. Features guide structure for nails and pushers in the magazine of the nailing machine.