JP2523783Y2 - Gate holding mechanism of fixture feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention is configured to drive a fastener fed into a nose passage extending from a main body by a driving member driven by a piston and cylinder device of the main body. More specifically, the present invention relates to a gate of a fastener feeding device for feeding a fastener into a nose passage.

2. Description of the Related Art Generally, in a fastener driving machine such as a nailing machine, a fastener feeding device for feeding a fastener to a nose passage includes a guide path for feeding a fastener continuous body from a magazine to a nose passage; A gate is provided for releasably covering the passage of the nose, the gate being pivotally supported by a shaft member passing through a pair of tabs erected on the outer surface of the nose near the passage. As the shaft member for opening and closing the gate of this driving machine, a shaft member having a head portion provided with an enlarged diameter portion is often used, and a male member formed on the rod member with a head portion is used. Are also used as shaft members. Still others are known in which an elongated cylinder is rigidly attached to a tab. The opening and closing of the gate by the pivotal support of the shaft member makes it easier to load the fastener connecting body and to remove the fastener clogging the nose passage portion.

Problems to be Solved by the Invention However, there is an inconvenience that the shaft member can be attached only when the nose is detached from the main body. That is, it has been difficult to attach or replace the gate after attaching the nose to the main body. Further, there is a disadvantage that the gate holding mechanism is somewhat expensive.

Accordingly, an object of the present invention is to provide a gate holding mechanism which can be mounted even when the nose is mounted on the main body, and which is inexpensive.

Means for Solving the Problems In order to achieve this object, according to the present invention, a fastener feeding device for feeding a fastener to a nose passage sends a fastener continuous body from a magazine to a nose passage. A fastener driving machine in which a gate covering the guide path and the nose passage is pivotally supported by a shaft member penetrating a pair of tabs erected on the outer surface of the nose, wherein the shaft member has a rod-like shape without an enlarged portion. Formed in the body, a groove is formed in the outer peripheral surface on one end side, so that this peripheral groove is between the main body side tab and the main body side wall portion,
A fastener driving machine is provided, wherein the shaft member penetrates through the tab and the shaft member insertion hole of the gate, and a resilient ring is attached to a circumferential groove of the shaft member. Is secured by a resilient ring to maintain the pivot of the gate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially sectional front view of a nailing machine 1 as a fastener driving machine according to the present invention. The nail driving machine 1 includes a handle 2, a main body 3 integrally formed with the handle, a nose 4 extending from the main body 3, and a magazine 5 capable of accommodating a large amount of nails for supplying nails to the nose 4. With the nail as a fixing tool from the magazine 5,
The feeding device 6 according to the present invention feeds the nose 4 to the fastener driving passage 7. The nailing machine 1 is supplied with pressurized air from a nipple attached to the handle 2 and operates to drive a nail by operating a trigger 8.

Therefore, the main body 3 includes a blade 10 as a driving member that reciprocates in the driving passage 7 of the nose 4, a striking piston 11 that drives the blade, and a main cylinder that slidably accommodates the striking piston. 12, and a main valve 13 for sending compressed air to the piston rear side of the main cylinder and releasing the compressed air.
Now, when the trigger 8 is pulled, the main valve 13 is operated, and the striking piston 11 located at the upper position of the cylinder 12 (in FIG.
Supply compressed air to the rear side. As a result, the striking piston 11 is given a force for rapidly moving downward in FIG. 1 and, as it moves downward, strikes the blade 10 downward (in FIG. See piston 11 on half side). By the downward impact, the nail in the driving passage 7 is impacted downward, and the nail is driven into an object to be driven such as a plate. After the driving, when the main valve 13 is operated and the supply of the compressed air to the piston rear surface is stopped, the striking piston 11 is moved upward by the compressed air entering the return chamber 14,
Returning to the position of the piston 11 in the right half of FIG.
10 will return. At the time of this return, the feeding device 6
The next nail is fed into the driving path 7 of the nose 4.

The illustrated nailing machine 1 is provided with a means for pushing out the nail loaded in the driving passage 7 of the nose 4 so as to partially protrude from the tip of the nose. For this reason, the blade 10, the striking piston 11, and the main valve 13 are formed hollow, and an elongated rod-shaped body 15 as a pushing means is slidably disposed in the hollow portion. The rod 15 is a main valve 13
Piston 17 housed in a cylinder 16 provided above
Are driven to reciprocate up and down by a piston 17 which reciprocates up and down in a cylinder 16. To this end, a valve 18 for selectively supplying compressed air to the rear and front surfaces of the piston 17 is provided above the cylinder 16, and the valve 18 supplies compressed air to the rear side of the piston 17 to The piston 17 is lowered, or pressurized air is supplied to the front side of the piston 17, that is, the side where the rod 15 extends, to raise the lowered piston 17.

Thereby, the rod 15 can be lowered before the nail is driven into the driving target, that is, before the trigger 8 is operated,
The nail sent from the magazine 5 to the driving passage 7 of the nose 4 by the feeding device 6 is lowered downward through the passage 7,
The chuck member 20 provided at the tip of the nose can hold the nose. Therefore, the nail as a fixing tool can be positioned at the tip of the nose before driving, and can be appropriately arranged at the driving position. In the configuration of this example, the collision with the blade is completely eliminated, and the configuration for retracting the push rod from the driving passage is not required, and the nose portion is not damaged.

FIG. 2 shows a nail feeding device 6 as a fastener according to the present invention.
Is enlarged. The feeding device 6 will be described with reference to FIG. The feeding device 6 feeds a continuous body (not shown) of fixing tools (nails) from the magazine 5 to the driving passage 7 of the nose 4. The feeding device 6 is provided with a piston / cylinder device 22, and a claw member 23 for feeding a holding band forming a nail continuous body is provided on the piston 24. Accordingly, during the return stroke after the nail is driven by the blade 10, the piston 24 is driven to feed the nail continuous body through the guide path 25, and the next nail is disposed in the driving path 7.

A gate 27 is provided to cover the driving path 7 and the guide path 25. As shown by the imaginary line in FIG. 2, the gate 27 is used to load a continuous nail body extending from the magazine 5 into the guide path 25, or to jam the jamming part of the driving path 7 of the nose 4. It can be opened and closed so that you can take it out.
As shown in FIG. 1, a lock 28 is provided to keep the gate 27 closed.

Because of the pivotal support of the gate 27, a pair of tabs 30, 31 vertically separated from each other on the outer surface of the nose 4 near the driving passage 7 as shown in FIG.
Is erected. A pair of tabs is also provided on the gate 27 side.
32 and 33 are erected. A shaft member 35 extends through these tabs 30 to 33 to pivotally support the gate 27 at a position close to the driving passage 7 of the nose 4.

In the present invention, as shown in FIG. 3, the shaft member 35 is formed of a rod-shaped body without an enlarged diameter portion. And
A peripheral groove 36 is formed on the outer peripheral surface on one end side, and the distal end side is tapered for ease of insertion. In the insertion of the shaft member 35, the circumferential groove 36 is formed between the tab 30 on the main body side of the pair of tabs 30, 31 and the wall portion 38 of the nose 4 on the side of the main body 3 (see also FIG. 1). As shown in the middle, it is inserted from below in FIG. By this insertion, the shaft member 35 penetrating the tabs 30 to 33 becomes a pivotal support member of the gate 27, and holds the gate 27 so that it can be opened and closed.

After the shaft member 35 is inserted, an elastic ring 40 made of an elastic material such as rubber is attached to the circumferential groove 36 of the shaft member 35 for holding the shaft member, as shown in FIG. By this ring 40, the shaft member 35 is held so as not to move upward or downward. As shown in FIG. 5, the shaft member 35 has a tapered portion 41 on the distal end side.
In addition, it is preferable that the portion 42 between the circumferential groove 36 and the shaft body is also formed in a tapered shape, whereby the hole of the pair of tabs 30 and 31 of the nose and the pair of tabs 32 and 33 of the gate are formed. Even if the hole is slightly displaced, it can be easily inserted while restricting the displacement.

In the above embodiment, a nailing machine is employed as the fastener driving machine. However, the present invention is not limited to the nailing machine, and another fastener driving machine (for example, a screw driving machine) may be used. Needless to say, the present invention can be applied as long as the fixing device feeding device has a gate.

Effect of the Invention According to the gate holding mechanism of the present invention, the shaft member is a rod-shaped body without an enlarged diameter portion and a circumferential groove is formed at one end side, and this shaft member passes through the tab and the shaft member insertion hole of the gate. Since an elastic ring is attached to the circumferential groove between the nose tab on the main body side and the wall portion on the main body side,
In addition to maintaining the pivotal support of the gate, the shaft member can be easily inserted even when the nose is attached to the main body, and the elastic ring can be easily removed, so that the gate can be easily replaced.

[Brief description of the drawings]

1 is a partially cutaway front view of a nailing machine as a fastener driving machine according to the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG.
FIG. 3 is an explanatory view showing a pivot portion of the gate, and FIG.
FIG. 5 is an enlarged view of a mounting portion on the distal end side of the shaft member, and FIG. 5 is a diagram showing a distal end portion of the shaft member. DESCRIPTION OF SYMBOLS 1... Nailing machine 2... Handle 3... Body 4 nose 5... Magazine 6. Nail feeder 7 driving path 8 trigger 10. , 11… Striking piston 12 …… Main cylinder 13 …… Main valve 14 …… Return chamber 15 …… Elongated rod-like body, 16 …… Cylinder 17 …… Piston, 18 …… Valve 20 …… Chuck member 22 …… Piston・ Cylinder device 23 ... Claw member, 24 ... Piston 25 ... Guiding path, 27 ... Gate 28 ... Gate lock 30 ... Tab body side tab 31 ... Nose tip side tab 32, 33 ... Tab , 35… shaft member 36… peripheral groove, 38… body side wall 40… elastic ring, 41… taper 42… taper

Claims (1)

(57) [Scope of request for utility model registration] 1. A fastener which is fed into a nose passage extending from a main body is driven by a driving member driven by a piston / cylinder device of the main body, and the fastener is supplied to the nose passage. The fixing tool feeding device for feeding is provided with a gate that covers a guide path for feeding the fixing tool connecting body from the magazine to the nose passage, and the gate is formed by a pair of tabs provided upright on an outer surface of the nose near the passage. In a fastener driving machine pivotally supported by a penetrating shaft member so as to open the passage and the guide path, the shaft member is formed of a rod-shaped body without an enlarged diameter portion, and a groove is formed on an outer peripheral surface at one end side. The shaft member extends through the tab and the shaft member insertion hole of the gate so that the peripheral groove is between the main body side tab and the main body side wall portion, and an elastic ring is attached to the peripheral groove of the shaft member. A fastener driving machine characterized in that it is mounted.