JPH0650140Y2 - Nail supply guide device for nailer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a door member that opens and closes an injection port provided in the nose portion of a nailing machine, and a fixed guide wall that faces the door member. The present invention relates to a nail supply guide device that variably sets a width of a nail supply passage formed between the two according to a connection method of connecting nails and guides and supplies the connecting nail along the nail supply passage.

(Prior art and its problems) In a nailing machine that uses a large number of connecting nails that are connected to each other and wound in a coil, the connecting nail housing magazine connects a cylindrical nose portion that receives the leading nail of the connecting nail. A nail supply passage is formed to supply and guide the nail.

The nail supply passage includes a fixed guide wall that extends from one side edge of the nail receiving opening that is opened to the side of the nose that is integrally formed with the nose portion to the vicinity of the nail discharge opening of the magazine, and the fixed guide wall. The door member is opposed to the nose portion with a certain gap therebetween and is rotatably supported with respect to the nose portion.

The fixed guide wall is provided with a nail feeding means that advances into the nail feeding passage and is reciprocally driven along the nail feeding direction, and prevents the connecting nail from moving in the opposite direction on the door member side. A non-return claw is provided.

On the other hand, as the connection mode of the connection nail used in this type of nail driving machine, the wire connection method in which the shaft portion of the nail is welded and connected to a fine wire, and the bending tabs are formed on the upper and lower edges along the longitudinal direction. There is a plastic sheet connection system in which a nail shaft is inserted and supported in an opening formed in a connection band of a plastic sheet and connected. These two types of connecting nails have different width-direction dimensions. That is, the plastic sheet connection method is wider. For this reason, there is known one in which the gap between the nail supply passages is variably set so that both types of connecting nails can be supplied (for example, Japanese Utility Model Publication No. 62-19179).

In such a conventional technique, as shown in FIGS. 3 (a) and 3 (b), the inner surface of the door member 40 (the surface forming the wall of the nail supply passage 41) is protruded close to the fixed guide wall 42. The slide plate 43 is provided so as to be movable between the position and the retracted position away from the fixed guide wall 42. The slide plate 43 is springed in a direction projecting toward the fixed guide wall 42 side with respect to the door member 40. The plate, which is biased and arranged,
A guide shaft 44 formed on 43 extends by inserting a guide hole 45 formed on the inner side wall of the door member 40, and a stop pin 46 provided on the guide shaft 44 is engaged with a different position on the outside of the door member 40. By making slide plate 43
Is set to a predetermined position.

By the way, in the above-mentioned conventional technique, since the slide plate 43 is configured to be held by the pressing force of the spring 47, the nail supply passage
In order to resist the pressing force of the nail in 41, a relatively strong spring is required, but it is necessary to move the plate 43 by hand to set the position of the slide plate 43. There is a limit. In particular, since the action of the spring at the protruding position becomes small, the phenomenon that the impact of the nail driving of the nail driver propagates to the nose portion 45 and the slide plate 43 moves in the direction away from the fixed guide wall 42 due to the vibration occurs. ing. This is because the above-mentioned nail feeding means is operated in the backward direction almost in synchronism with the impact of nail striking, so that the following problems occur.

(A) When the slide plate 43 moves in the direction away from the fixed guide wall 42 when the feeding claw 49 of the nail feeding means 48 retreats, the width of the nail supply passage 41 widens thereby, and the nail in the passage 41 moves. The shaft portion 44b is inclined toward the door member 40 side and the feed claw 49
As a result of being separated from the tip end of the second nail, the feed claw 49 may enter the rear side of the shaft portion of the second nail, and a double feed phenomenon may occur. In other words, the sliding stroke of the feed claw 49 is set according to the maximum connection pitch of the connecting nails used,
When using a nail having a connecting pitch smaller than this, the height of the nail is set high so that the feed nail 49 does not get over the shaft portion 44a of the second nail. Therefore, the nail shaft 44a
The feed claw 49 operates normally when the tool is held in the correct posture without tilting in the nail supply passage. However, when the nail tilts toward the door member 40, the feed claw 49 gets over the shaft of the second nail and enters the rear side of the second nail, resulting in double feed.

(B) When the check claw 51 is provided on the slide plate 43, the check claw 51 is moved along with the backward movement of the slide plate 43.
In some cases, the 51 is retracted from the normal position, and the connecting nail is returned following the movement of the feed claw 49 in the separating direction. In this case, since the nail is not supplied into the nose portion 50, the nail is idly fed, causing a blank driving phenomenon and damaging the nail driving machine.

Furthermore, in the above-mentioned conventional technique, the nail supply passage 41 is driven by the pressing force of the spring acting on the slide plate 43 by the nail driving operation.
Since a large spring force is required to maintain the distance between the two, the problem that the durability of the spring is poor, and to set the position of the slide plate 43 must be operated against the large spring force. However, there is a problem that it requires a strong force and it is difficult to perform the setting operation.

(Problems of the Invention) The present invention solves the above problems and prevents the slide plate from moving in a direction away from the fixed guide wall due to an impact at the time of driving the nail by a nailing machine, and sets the position of the slide plate. It is a technical object of the present invention to provide a nail supply guide device for a nailing machine that can be easily operated.

(Means for Solving the Problems) In order to solve the above problems, a nail supply guide device for a nailing machine according to the present invention is a nailing machine that uses connecting nails whose shafts are supported and connected by a connecting member. For guiding the nail at the head of the connecting nail and driving the connecting nail into the work material, and the connecting nail integrally configured with one side edge of the nail receiving opening of the injection port of the nose portion. A fixed guide wall, a door member that faces the fixed guide wall at a predetermined interval, and is openably and closably supported by the nose portion, and between the door member and the fixed guide wall. A nail supply passage which is provided on the nose portion and supplies the connecting nail to the nose portion, and is arranged on the side of the door member facing the fixed guide wall and is movable in a direction of approaching or separating from the fixed guide wall. Provided slide With a plate, on the inner surface side of the slide plate,
A protrusion that protrudes outward from an opening formed in the door member is integrally formed, and bulges are formed at different positions on the protrusion, while a door member is provided outside the door member. Is provided with a fixed block slidably supported along the surface thereof, and an engaging portion that selectively engages with any one of the bulging portions is formed in the fixed block.

(Operation and effect of the invention) In the above-mentioned configuration, the slide plate is fixed by engaging the fixing block with the bulging portions at different positions of the protruding member protruding outward from the opening formed in the door member. It is positioned at a position close to or away from the guide wall.

In this way, the slide plate positioned by the fixing block is prevented from moving further away from the fixed guide, so that the width of the nail supply passage formed by the fixed guide wall and the slide plate is fixed. Will be done. Therefore, it is possible to prevent the phenomenon that the slide plate moves due to the impact at the time of nail driving and the connecting nail tilts in the nail supply passage, and the connecting nail is always supplied to the nose portion while maintaining the correct posture. The plate will not retract due to impact or the like.

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

In FIGS. 1 and 2A and 2B, reference numeral 1 indicates a nail supply passage. The nail supply passage 1 is connected to an injection port formed at the nose of the tip of the nail driver and a connection nail supply magazine (not shown).
For guiding the connecting nail 2 which is formed between the shaft portion and the shaft and is supported and connected by the connecting member. The nail supply passage 1 is located near one side edge of the nail receiving opening of the injection port in the vicinity of the nose portion. The fixed guide wall 5 is integrally formed, and the door member 6 is arranged to face the fixed guide wall 5 at a predetermined interval.

A feed claw (not shown) slides along the fixed guide wall 5.

The door member 6 is supported by a support shaft 7 so as to be openable and closable with respect to the nose portion. An opening 8 is provided in the center of the door member 6.
Are formed.

A slide plate 8 is arranged on the side of the door member 6 facing the fixed guide wall 5.

A protrusion 9 is integrally formed on the inner surface side of the slide plate 8, and the protrusions 9 are formed at different positions on the protrusion 9.
0 and 11 are formed. The projecting body 9 is formed so as to penetrate the opening 8 formed in the door member 6 and project outward.

On the other hand, on the outside of the door member 6, a T-shaped engaging piece 12 is formed at one end of the opening 8 and is slidably supported along the surface of the door member 6. Fixed block
13 are provided. The tip of the engaging piece 12 is formed to have the same size and shape as the bulging portions 10 and 11 of the projecting body 9. Further, when the tip end portion of the engaging piece 12 and the bulging portion 10 on the tip end side of the projecting body 9 are aligned with each other, the slide plate 8 approaches the fixed guide wall 5 and the width of the nail supply passage 1 is adjusted by the wire connecting method. Located at the first position (the position shown in FIG. 1A) suitable for supplying the connecting nail of FIG.
The second position suitable for supplying the connecting nail 2 of the plastic sheet connecting method by separating the fixed guide wall 5 from the fixed guide wall 5 when 11 and 11 are met. Is set to be located in.

The fixed block 13 is provided with a groove-shaped engaging portion 14 which can be inserted into the engaging piece 12 and which is selectively engaged with any of the bulging portions 10 and 11 of the projecting body 9.

In the above structure, the bulging portion 10 on the front end side of the protruding body 9 of the slide plate 8 protruding outward of the door member 6 is provided with the engaging piece 12.
The slide plate 8 is positioned at the first position by inserting the engaging piece 12 and the bulging portion 10 into the engaging portion 14 of the fixed block 13 so that the slide plate 8 is brought into engagement with the engaging portion 14 of the fixing block 13. On the other hand, the slide plate 8 is moved backward so that the bulging portion 11 on the base end side of the projecting body 9 matches the slide plate 8 with the tip end portion of the engaging piece 12 so that the engaging portion 14 of the fixed block 13 is provided. When the tip portion and the bulging portion 11 are inserted and engaged with each other, the slide plate 8 is positioned at the second position.

As described above, since the slide plate 8 positioned at the first position or the second position by the fixing block 13 cannot move in the direction away from the fixed guide wall 5, the fixed guide wall 5 and the slide plate 5 cannot move. The width of the nail supply passage 1 constituted by 8 and 8 is fixed. Therefore, it is possible to prevent the phenomenon that the slide plate 8 is moved by the impact at the time of driving the nail and the connecting nail 2 is tilted in the nail supply passage 1, and in any case of wire connection or plastic sheet connection, The connecting nail 2 is always supplied to the nose portion while maintaining a correct posture.

[Brief description of drawings]

1 (a) and 1 (b) are explanatory views of a main part of a nail supply guide device in the vicinity of a nose part of a nailing machine according to the present invention, and FIG. 2 is an exploded perspective view of a door member of the guide device. Three
1A and 1B are cross-sectional views of a conventional nail supply guide device on a plane and a back surface, respectively. Reference numeral 1 ... Nail supply passage, 2 ... Connection nail, 5 ... Fixed guide wall,
6 ... Door member, 8 ... Slide plate, 9 ... Projection body, 1
0, 11 ... Swelling part, 13 ... Fixed block

Claims (1)

[Scope of utility model registration request] 1. A nailing machine using a connecting nail having a shaft portion supported and connected by a connecting member, the nose portion receiving a nail at the head of the connecting nail and driving the connecting nail to a workpiece. A fixed guide wall, which is integrally formed with one side edge of the nail receiving opening of the injection port of the nose portion, for guiding and supplying the connecting nail, and is arranged to face the fixed guide wall at a predetermined interval, and the nose. Member that is openably and closably supported by the door portion, a nail supply passage that is provided between the door member and the fixed guide wall to supply the connecting nail to the nose portion, and a fixed guide wall of the door member. And a slide plate provided movably in a direction approaching or moving away from the fixed guide wall, and on the inner surface side of the slide plate,
A protrusion that protrudes outward from an opening formed in the door member is integrally formed, and bulges are formed at different positions on the protrusion, while a door member is provided outside the door member. A fixing block slidably supported along the surface of the nail is provided, and an engaging portion that selectively engages any of the bulging portions is formed in the fixing block. Nail supply guide device.