JP2549592Y2 - Nail escape device for nailing machine for loose nails - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, a large number of loose nails are fed one by one into a nail driving hole of a nose unit of a nailing machine and driven by a rod-shaped driver reciprocating in the nail driving hole. The present invention relates to a nail escape device for a nail driving machine for driving a nail into a nail driving material through a piercing hole.

[0002]

Prior art and its problems The present applicant filed a Japanese utility model application
No. 46423 (Japanese Utility Model Application Laid-Open No. 63-154173), a nose having a nail driving hole for slidably guiding a rod-shaped driver is provided at the tip of the body of an air-driven nail driving machine, and a nose is provided directly behind the nose. A sheathed magazine is provided, and in a nailing machine for loose nails, which is driven into the nail driving material by hitting a nail sequentially supplied to a nail driving hole of a nose by a magazine with a screwdriver, a linear nail is inserted into the magazine. A guide supply path is provided, and one side surface of the nail guide supply path forms an inclined plane with respect to the axis of the nose, and the nail at the leading position supplied from the nail guide supply path of the magazine is formed at the nail ejection hole of the nose. A nail receiving recess for receiving the nail is formed, the nail receiving recess has an inclined plane that is continuous with the inclined plane of the nail guide supply path of the magazine, and is communicated with the nail driving hole. Nail introduction direction An extended guide groove is formed, and the guide groove movably accommodates a nail escape claw that engages with a shank of a loose nail in the nail receiving recess and pushes the nail into the nail punching hole. The present invention provides a nail feeder provided with an actuating member which normally urges to a position where it enters the nail driving hole while retracting from the nail driving hole prior to nail driving.

In the above-mentioned nail feeding device, the operating member is operated immediately after the nail driving process of one nail by the nail driver is completed, so that the nail can be supplied to the nail driving hole.
It has an excellent configuration and operation in that the nail supplied into the nail driving hole can be held in the nail driving hole until immediately before nail driving.

However, according to an actual pneumatic driven nail driving machine equipped with the above-mentioned nail feeding device, at the start of the nail driving process, the contact at the tip of the nose is pressed against the nail driving material. While the pusher is moved to retreat from the nail driving hole, at the end of the nail driving step, the operating member is used for a blowback that blows back the hitting piston of the hitting air cylinder integrated with the driver to the top dead center. The nail escape air cylinder is driven upward by a nail escape air cylinder driven as a signal of a pressure increase of a predetermined value or more of the pressure of the air being stored in the air storage chamber, and the nail escape nail is moved further backward from its retracted position. Since the configuration is such that one rose nail at the tip position of the magazine is allowed to move into the nail receiving recess, further modification is performed as described below. It remains should do point. (1) The operation timing of the nail escape nail is unstable because the pressure of the pressure of the air that is being stored in the air-air storage chamber for blowback during the nail driving process is increased above a certain value. Incorrectly inserted timing causes two loose nails to be introduced into the nail driving hole of the nose. (2) Since the nail escape nail is configured to also act as a stopper for a loose nail so that the loose nail at the next position is not dropped into the nail driving hole of the nose during the nail driving process, The configuration and operation of the device for driving the nail escape nail are complicated. (3) If the nail escape nail does not reciprocate once, the nail does not fall into the nail ejection hole of the nose, so that it takes time to supply the nail. (4) The nail escape nail has a structure that supports only the part close to the enlarged head of the nail, so that the nail is easy to wobble,
An accident occurs in which the movement of the nail from the magazine to the nail driving hole of the nose becomes defective. (5) The angle of the nose with respect to the direction of the nail driving material is 0 ° ~
It is possible to escape the nail only within the range of 15 °, and beyond this range, the nail can be driven.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks, to stabilize the operation timing of the nail escape nail, to have a simple structure, to increase the nail feeding speed, and to achieve a nail escape at the time of nail escape. An object of the present invention is to provide a nail escaper for a nailing machine for a nail that has stable support and has no direction of nail driving.

[0006]

According to the present invention, there is provided a nailing machine main body and a nail driving hole which is attached to the nailing machine main body and in which a rod-shaped driver linearly moves forward to drive a nail. The nose unit and the loose nail attached to the rear surface of the nose unit toward the nail driving hole at right angles to the longitudinal axis of the loose nail,
And a nail escape device for a nailing machine for a nail with a nail having a nail feeding passage for feeding in a state displaced in the lateral direction of the nail driving hole, wherein the nail has a vertical axis of the nail driving groove. A nail escape plate that is slidable on the nose body at right angles to the nail, has a nail pick-up groove at the inner end that is parallel to the cross section of the nail feed passage, and has an open nail pick-up groove. The nail feeder slides on the nose body at right angles to the longitudinal axis of the nail punching hole and moves to the position immediately before one of the nail punching holes to close the nail feed passage, while the inner end has the above-mentioned one of the nail pick-up groove. A sliding core capable of abutting the inner end of the nail escape plate to provide a side wall forming a side, and a means for moving the nail escape plate, wherein the nail escape plate has the inner end in a nail driving standby position. Being advanced beyond the nail driving hole As a result, the nail escape plate is stopped at a position where it comes into contact with the inner end of the slide core and overlaps and communicates with the nail pick-up groove with the nail feed passage, and the inner end of the nail escape plate has a nail ejection hole before starting nail ejection. By retreating to the immediately preceding position opposite to the one immediately preceding position and opening the one side wall of the nail picking groove, the slide core nails the nail picked up in the nail picking groove by the spring. And a nail escape plate moving means for allowing escape into the hole.

In another embodiment, the slide core is divided into a first slide core and a second slide core from a side close to a nailing machine main body by a cut surface extending in a horizontal axis direction of a nail driving hole. When the inner end of the nail escape plate retreats to just before the other of the nail driving holes, the first slide core follows the second slide core first.

[0008]

According to the present invention, the nail escape plate picks up the nail from the magazine at the time of the nail ejection standby, so that the nail can be escaped into the nail ejection hole at any time. The nail escape plate is moved to the nail escape position at right angles to the longitudinal axis of the nail driving groove,
The nail that has been picked up is escaped into the nail driving groove. As described above, since the nail escape plate has already picked up the nail at the time of standby for nail driving, there is a margin in operation timing, and the nail driving can be performed within 1 second / shot.

Further, the slide core is divided into two,
The action of the slide core ensures that the nail escapes from the nail pick-up groove to the nail launching hole. For this reason, the nail driving has no directivity, and the nail driving can be performed at a free angle. Further, since the structure of the nail escape mechanism is simplified and there is no obstacle in one reciprocation of the nail escape plate, the time required for the nail driving process is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to FIGS.

FIG. 1 shows a nose unit for driving loose nails one by one into a nail driving material by reciprocating a rod-shaped driver by a striking air cylinder (not shown) of a pneumatic driven nail driving machine. One nose body 1A is shown as a front view.

The nose unit 1 includes a nose body 1A integral with the lower end plate 2 of the striking air cylinder, an upper driver guide cover 3a having a substantially rectangular shape, and a lower driver guide cover 3b having a substantially trapezoidal shape. It is attached to the tip of the machine body (not shown). At the center of the entire surface of the nose body 1A, a nail driving groove 5 in which the rod-shaped driver 4 reciprocates vertically extends in the vertical direction.

On the front surface of the nose body 1A, approximately at the center in the vertical direction, the left and right of the nail driving groove 5 are provided.
A wide slide core guide groove 6 and a nail escape plate guide groove 7 communicating with the nail driving groove 5 and extending at right angles to the longitudinal axis of the nail driving groove 5 are provided on the longitudinal axis of the nail driving groove 5. They are provided at the same position and the same width. A nail head receiving groove 9 for receiving the enlarged head 8a of the nail 8 is formed on a front surface of the nose body 1A at a connection portion between the upper edge of the slide core guide groove 6 and the nail driving groove 5. I have.

At the outer end of the slide core guide groove 6, a slide core receiving block 12 is provided on the nose body 1A.
Is fixed. This slide core receiving block 12
Spring receiving recesses 13 and 14 are provided at two upper and lower positions in such a manner as to open toward the nail driving groove 5. At the outer end of the nail escape plate guide groove 7, the nose body 1A
A nail escape plate receiver 28 is fixed to the base. The nail escape plate receiver 28 determines the retreat position of the nail escape plate 21 with respect to the nail ejection groove 5.

The slide core guide groove 6 has a slide core divided into two parts, a substantially rectangular upper slide core 10 (first slide core) and a substantially rectangular lower slide core 11 (second slide core). Are disposed so as to be slidable at right angles to the longitudinal axis of the nail driving groove 5. The width of the lower slide core 11 is
The upper slide core 10 and the lower slide core 11 can support the nail 8 from its head 8a to the vicinity of the distal end thereof.

At the outer end of the upper slide core 10 is provided a spring receiving portion 15 which rises in the front direction of the nose unit 1. The spring receiving portion 15 is provided with a spring receiving recess 16 that faces the spring receiving recess 13 of the slide core receiving block 12. A compression coil spring 17 is arranged between the spring receiving recess 13 and the spring receiving recess 16. The inner end surface 10a of the upper slide core 10 is slightly inclined as a whole with respect to the longitudinal axis of the nail driving groove 5, and the inner end upper surface 10b of the upper slide core 10 is formed.
Is formed so that the nail head 8a of the nail 8 can slide down in a state in which it is further warped with respect to the inclination of the inner end face 10a. At the outer end of the lower slide core 11,
As in the case of the upper slide core 10, the spring receiving portion 18
Is provided. The spring receiving portion 18 is provided in the spring receiving recess 1.
9 A compression coil spring 20 is arranged between the spring receiving recess 14 and the spring receiving recess 19. The inner end face of the lower slide core 11 has the same inclination as the lower part of the inner end face of the upper slide core 10.

A substantially rectangular nail escape plate 21 is arranged in the nail escape plate guide groove 7 so as to be slidable at right angles to the longitudinal axis of the nail ejection groove 5. In the vicinity of the nail escape plate 21, there is provided an operation unit 22 that rises toward the front of the nose unit 1. Operation unit 2
2 has a U-shaped notch 23 cut rearward from its front surface. A piston rod 25 of an escape air cylinder 24 described below is inserted into the notch 23. The piston rod 25 is fixed to the operation section 22 by a nut 26. As shown in FIG. 5, a nail pick-up groove 27 having an L-shaped cross section is provided at the inner end on the back side of the nail escape plate 21. The nail pick-up groove 27 is provided. The nail pick-up groove 27 receives the shaft of the nail 8.
The inner end surface 21a of the nail escape plate 21 is inclined slightly forward with respect to the longitudinal axis of the nail driving groove 5 as a whole, and has the same inclination as the inner end surface of the lower slide core 11.

At the lower part of the nose body 1A, a vertical guide claw 29a having the same shape on the left and right with the nail driving groove 5 as a center.
And 29b are pivotally mounted in the left-right direction by pins 31a and 31b. These vertical guide claws 29a and 29b are provided with compression coil springs 30a and 3
0b is always biased in the closing direction.

A contact arm guide 3 having a substantially rectangular front face is provided on the front face of the lower driver guide cover 3b.
2 is fixed by bolts 33. Between the lower driver guide cover 3b and the contact arm guide 32, a contact arm 33 having an inverted T-shape in front view is slidably disposed within a certain range in the vertical direction. Between a bolt 34 provided on the contact arm 33 and a bolt 35 provided on the contact arm guide 32,
A tension spring 36 is arranged. Extension coil spring 3
6 always urges the contact arm 33 downward, so that when the contact arm 33 is not pressed against the nail driving material, the lower end surface of the contact arm 33 is higher than the lower end surface of the nose body 1A. Also project downward.

As shown in FIGS. 3 and 4, on the rear surface of the nose body 1A, the loose nails arranged in parallel are stored and the nail pick-up groove 2 of the nail escape plate 21 is provided.
A magazine 34 for feeding the nail by its own weight toward 7 is attached. As shown in FIG. 4, the magazine 34 has a nail feed passage 35 having a T-shaped cross-section substantially identical to the cross-sectional shape of the nail. At the upper end 35a of the nail feed passage 35, the nail head 8a
Through the shaft of the nail at the lower portion 35b. The lower end of the nail feed passage 35 is open. The cross section of the nail feed passage 35 has the same slope as the nail pick-up groove 27 of the nail escape plate 21, and overlaps with the nail pick-up groove 27 when the nail escape plate 21 is in the nail ejection standby position.

Hereinafter, the operation of the nail escape device having the above configuration will be described. When the loose nail is loaded in the magazine 34 and the tip of the contact arm 33 is not pressed against the nail driving material, the nail escape plate 21 is in a position where the nail escape plate 21 has advanced beyond the nail driving groove 5, and FIG. As shown, the inner end face 21a of the nail escape plate 21 is in contact with the inner end faces of the upper and lower slide blocks 10 and 11. In this state, the nail 8 is picked up in the nail pick-up groove 27 of the nail escape plate 21.

When the tip of the contact arm 33 is pressed against the nail driving material and retreats to the tip of the nose body 1A, the escape air cylinder 24 is actuated by a signal from the contact arm 33, and the nail escape plate 21 is moved into the nail driving groove. 5 is moved outward in a direction perpendicular to the vertical axis.
The upper and lower slide cores 10 and 11 are moved by the compression coil springs 17 and 20 to move the nail escape plate 21 until the inner ends of the slide cores 10 and 11 reach the position immediately before one of the nail driving grooves 5. The nail is moved to the nail driving groove 5 following the movement. The spring forces of the compression coil springs 17 and 20 are set so that the upper and lower slide cores 10 and 11 stop at this point, and only the nail escape plate 21 further moves the one of the nail driving grooves 5. It retreats to the immediately preceding position opposite to the immediately preceding position. Since the upper slide core 10 is lighter than the lower slide core 11 compared to the force of the spring 17, the upper slide core 10 advances to the one immediately preceding position of the nail driving groove 5 earlier than the lower slide core 11. As a result, the nail 8 rotates clockwise in FIG. 1 around the tip of the nail, and is easily escaped into the nail driving groove 5.

When the nose unit 1 of the nailing machine is held downward, the nail 8 supplied into the nail driving groove 5
The tip of the nail 8 falls in the nail driving groove 5 and the vertical guide nail 2
It is held at 9a and 29b and waits for the driver 4 to launch. On the other hand, when the nose unit 1 takes a posture other than downward, the nail 8 stops in a state where it is not restrained in the nail driving groove 5 and waits for the driver 4 to drive.

The driver 4 is driven by the striking air cylinder to move forward in the nail driving groove 5, drive the nail 8 into the nail driving material, and move back in the nail driving groove 5, as shown in FIG. When returning to the position, the piston rod of the escape air cylinder 24 receives a signal from the blowback air storage chamber formed around the striking air cylinder in the nailer body that the air pressure in the chamber has dropped below a certain value. The nail escape plate 21 moves so that the inner end 21 a of the nail escape plate 21 abuts the inner end of the upper and lower slide cores 10 and 11 beyond the nail driving groove 5. Inner end 2 of nail escape board 21
When the inner surface of the upper and lower slide cores 10 and 11 comes into contact with each other, the nail at the leading position coming out of the magazine 34 is picked up in the nail driving groove 27.

In the above embodiment, the slide core is divided into the upper slide core 10 and the lower slide core 11, but the nail 8 can be escaped into the nail driving groove 5 even if it is integrated.

[Brief description of the drawings]

FIG. 1 is a front view of a nose body of a nail driving machine for a nail having a nail escape device according to the present invention.

FIG. 2 is a front view of the nose unit of the nailing machine for a nail having the nail escape device according to the present invention and its related parts.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a cross-sectional view of the magazine.

FIG. 5 is an explanatory view showing a state where a nail escape plate and upper and lower slide blocks are in contact with each other.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Nose unit 1A Nose main body 4 Driver 5 Nail ejection groove (Nail ejection hole) 8 Nail 10 Upper slide core (First slide core) 11 Lower slide core (Second slide core) 17 Compression spring 20 Compression spring 21 Nail Escape plate 24 Escape air cylinder (nail escape plate moving means) 27 Nail pick-up groove 34 Magazine 35 Nail feed passage

Claims (2)

(57) [Scope of request for utility model registration] 1. A nailing machine main body, a nose unit attached to the nailing machine main body, and provided with a nail driving hole for driving a nail by linearly moving a rod-shaped driver, A magazine mounted on the rear surface and provided with a nail feed passage for feeding a loose nail toward the nail driving hole at a right angle to the longitudinal axis of the loose nail and in a laterally displaced state of the nail driving hole. A nail escape device for a nail driving machine for a nail, comprising a nose body which is slidable on the nose body at right angles to a longitudinal axis of the nail driving hole and parallel to a cross section of a nail feed passage at an inner end. A nail escape plate having a nail pick-up groove with one side opened at the side, and a nail escape plate with a spring is followed by a certain range and slides on the nose body at right angles to the longitudinal axis of the nail ejection hole to form a nail ejection hole. While moving to the position just before one to close the nail feed passage, the inner end is A slide core capable of contacting the inner end of the nail escape plate so as to provide the side wall forming the one side of the pick-up groove; and a means for moving the nail escape plate, wherein the nail escape is provided in a nail ejection standby position. Since the inner end of the plate has advanced beyond the nail driving hole, the inner end of the plate comes into contact with the inner end of the slide core, and the nail pick-up groove is stopped at a position overlapping and communicating with the nail feed passage. The inner core of the nail escape plate is retracted to the immediately preceding position opposite to the one immediately preceding position of the nail ejection hole to open the one side wall of the nail catching groove, so that the slide core is in the nail catching groove. A nail escape plate moving means for allowing the nail picked up in the nail to escape into the nail driving hole by the spring. 2. The slide core has a cut surface extending in a horizontal axis direction of a nail driving hole, and is provided with a first surface from a side close to a nailing machine main body.
The first slide core follows the second slide core before the second slide core when the inner end of the nail escape plate is retracted to just before the other of the nail ejection holes. Nail escape device for nailers for loose nails.