JPH0650141Y2 - 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. 5A and 5B, a protrusion that is close to the fixed guide wall 42 is provided on the inner surface of the door member 40 (the surface forming the wall of the nail supply passage 41). 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. And guides the connecting nail integrally formed with a nose portion for receiving the leading nail of the connecting nail and driving the nail into the workpiece and one side edge of the nail receiving opening of the injection port of the nose portion. Fixed guide wall,
A door member that is disposed to face the fixed guide wall at a predetermined interval and that is openably and closably supported by the nose portion, and the door member is provided between the door member and the fixed guide wall to connect the door member and the fixed guide wall. A nail supply passage for supplying nails to the nose portion, and a slide plate arranged on the side of the door member facing the fixed guide wall and movably in a direction approaching or moving away from the fixed guide wall. And an actuating member is disposed on the door member, and between the actuating member and the slide plate, a position where the slide plate is close to a fixed guide wall and a position where the slide plate is separated from the fixed guide wall by actuation of the actuating member are provided. A door member is provided with an operating unit that forms a linking mechanism including a moving pin and a guide groove that slidably accommodates the pin, and operates the operating member from outside the door member. Characterized by providing exposed to the outside.

(Operation and effect of the invention) In the above configuration, when the operating portion of the operating member is rotated,
The linkage mechanism moves the slide plate between a position close to and a position away from the fixed guide wall. Since the linking mechanism is composed of the pin and the guide groove for accommodating the pin, the positioned slide plate does not move in the direction away from the fixed guide wall, and therefore the nail formed by the fixed guide wall and the slide plate is used. The width of the supply passage is fixed. Therefore, it is possible to prevent the phenomenon that the slide plate retracts due to the impact at the time of driving the nail and the connection nail is tilted in the nail supply passage. It is always supplied to the nose part while maintaining the correct posture.

Further, unlike the conventional case, a spring is not used, and the operating member can be operated from the outside by operating the operating portion to move the slide plate. Therefore, the setting operation of the slide plate can be easily performed with one hand. .

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

In FIGS. 1 and 2, reference numeral 1 indicates a nose portion. The nose portion 1 is provided at the tip of a nailing machine using the connecting nail 2 in which the shaft portion is supported and connected by the connecting member as described above, and drives the nail into the work material.
An injection port 3 for receiving the leading nail is provided, and a nail supply passage 4 for supplying and guiding the connection nail 2 is formed between the injection port 3 and the connection nail supply magazine (not shown). The nail supply passage 4 faces a fixed guide wall 5 integrally formed with one side edge of the nail receiving opening of the injection port 3 in the vicinity of the nose portion 1, and faces the fixed guide wall 5 at a predetermined interval. The door member 6 is arranged.

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 1. A recess 9 is provided inside the door member 6.
A circular hole 8 is formed at the center of the upper wall 6a of the recess 9, and sliding grooves 10 are formed on both sides of the circular hole 8 in the thickness direction of the door member 6.

Inside the recess 9 of the door member 6, a slide plate 11 is arranged so as to face the fixed guide wall 5 and to be movable in a direction toward or away from the fixed guide wall 5.

An upper piece 12 and a lower piece 13 are formed above and below the slide plate 11, respectively. The upper piece 12 is formed with a guide groove 14 which is long in the length direction thereof, and engagement pins 15 are provided upright on both sides of the guide groove 14. The engaging pin 15 is the door member 6
It is slidably accommodated in the sliding groove 10 of the upper wall 6a.

In addition, the upper and lower pieces that project to the rear side of the slide plate 11
A check piece 17 is rotatably supported on the pin 16 provided between the pins 12 and 13. The non-return pawl 17 prevents the connecting nail 2 in the nail supply passage 4 from moving in the opposite direction, and its tip projects from the opening 18 formed in the slide plate 11 toward the nail supply passage 4 side. There is.

Next, an operating member 19 is arranged on the door member 6. The operating member 19 includes a disk portion 20 rotatably fitted in the circular hole 8 of the upper wall 6a of the door member 6, an operating pin 21 eccentrically provided on one surface of the disk portion 20, and It is composed of a lever-like operation portion 22 provided on the other surface of the disc portion 20. The operation portion 22 is provided so as to be exposed to the outside of the door member 6.

The operating pin 21 of the door member 6 is an upper piece of the slide plate 11.
When the operating pin 21 slides along the guide groove 14 while being slidably accommodated in the guide groove 14 of 12, and the operating pin 21 rotates as the operating member 19 rotates, the slide plate 11 moves toward the fixed guide groove 5 side. It is pushed in the direction of approaching or pulled back in the direction of moving away from it. Therefore, the operation pin 21 and the guide groove 14 cause the operation of the operation member 19 and the slide plate.
A linking mechanism that links the 11 operations with each other is configured. The slide plate 11 is the most fixed guide wall 5.
The position close to the side is defined as the first position (the position in FIG. 1) where the width of the nail supply passage 4 is suitable for supplying the connecting nail 2 of the wire connecting system, and the slide plate 11 is located closest to the fixed guide wall 5. A second position where the width of the nail supply passage 4 is suitable for supplying the connecting nail 2 of the plastic sheet connecting system at the separated positions.
Is set to the position of.

In the above structure, when the operating portion 22 of the operating member 19 is rotated, the eccentric operating pin 21 moves along the guide groove 14 of the upper piece 12 of the slide plate 11, so that the slide plate 11 is fixed to the fixed guide wall. It moves between a position close to or apart from 5. At this time, the engagement pin 15 of the slide plate 11 slides along the sliding groove 10 of the door member 6.

As described above, since the slide plate 11 set to the first position or the second position by the operation of the operation unit 22 does not move in the direction away from the fixed guide wall 5, the fixed guide wall 5 and the slide plate The width of the nail supply passage 4 constituted by 11 and 11 is fixed. Therefore, it is possible to prevent the phenomenon in which the slide plate 11 retracts due to the impact at the time of driving the nail and the connecting nail 2 tilts in the nail supply passage 4, and in any case of wire connection or plastic sheet connection, The connecting nail 2 is always supplied to the nose portion 1 while maintaining a correct posture.

Further, unlike the conventional case, a spring is not used, and the actuating member 19 is actuated by operating the operation portion 22 from the outside so that the slide plate
Since 11 can be moved, the setting operation of the slide plate 11 can be easily performed with one hand.

Next, FIGS. 3 and 4 show another embodiment, and the basic configuration is the same as that of the above embodiment.

A circular hole 25 is formed in the center of the back wall of the inner recess 9 of the door member 6, and a guide hole 26 is formed in the center of the upper wall 6a. A sliding groove 10 that is long in the thickness direction is formed.

A guide groove 27 is formed on the upper piece 12 of the slide plate 11 so as to be inclined with respect to the lengthwise direction, and engagement pins 15 are provided upright on both sides of the guide groove 27. The engaging pin 15 is slidably engaged in the sliding groove 10 of the upper wall 6a of the door member 6.

Further, 17 is a check claw.

Next, the door member 6 is provided with an operating member 28 and an operating member 29. The actuating member 28 is such that the actuating pin 30 and the convex piece 31 are formed on opposite sides of one of the elongated plate-like members formed in a Z shape, and the engaging shaft 32 is formed on the other end portion so as to project. is there. The operating member 28 is the upper end of the door member 6.
It is arranged between 6a and the upper piece 12 of the slide plate 11,
The operating pin 31 of the operating member 28 is an upper piece of the slide plate 11.
The guide piece 27 of the operating member 28 is slidably engaged with the guide groove 27 of 12
31 is slidably accommodated in the guide guide hole 26 of the upper wall 6a of the door member 6.

When the operating member 28 moves in the length direction of the upper wall 6a of the door member 6, the protruding piece 31 slides along the guide hole 26 of the door member 6 and the operating pin 30 moves the guide groove 27 of the slide plate 11. Since it slides along the slide plate 11, the slide plate 11 is pushed out in the direction approaching the fixed guide wall 5 side or pulled back in the direction away from this. Therefore, the operation pin 30 and the guide groove 27 constitute a linkage mechanism that links the operation of the operation member 28 and the operation of the slide plate 11 with each other. Then, the position where the slide plate 11 is closest to the fixed guide wall 5 side by the linking mechanism is set to the first position where the width of the nail supply passage 4 is suitable for supplying the connection nail 2 of the wire connection system (see FIG. 3). Position) and the position where the slide plate 11 is farthest from the fixed guide wall 5 and the width of the nail supply passage 4 is the connecting nail 2 of the plastic sheet connecting system.
To be in a second position suitable for supplying

The operating member 29 includes a disc portion 20 rotatably fitted in a circular hole 25 in the rear wall of the door member 6, a guide groove 33 formed in one surface of the disc portion 20 in a radial direction, and the disc. The operation unit 34 is provided on the other surface of the unit 20 and is exposed to the outside.
The operating shaft 35 of the operating member 28 is slidably accommodated in the guide groove 33 of the operating member 29.

In the above configuration, when the operating member 29 is rotated by the operating portion 22, the guide groove 33 also rotates, so that the operating shaft 35 of the operating member 28 moves in the length direction of the upper wall 6a of the door member 6. When the operating member 28 moves in the longitudinal direction of the door member 6, as described above, the slide plate 11 comes close to the fixed guide wall 5 by the linking mechanism including the operating pin 30 and the guide groove 27. Move between one position or a second position that separates. At this time, the engaging pin 15 of the slide plate 11
Slides along the sliding groove 10 of the door member 6.

Since the slide plate 11 positioned at the first position or the second position by the operation of the operating member 29 does not move in the direction away from the fixed guide wall 5, the fixed guide wall 5 and the slide plate 11 The width of the nail supply passage 4 constituted by is fixed. Therefore,
The phenomenon that the slide plate 11 retracts and the connecting nail 2 tilts in the nail supply passage 4 is prevented, and in any of the wire connecting method and the plastic sheet connecting method,
The connecting nail 2 is always supplied to the nose portion 1 while maintaining a correct posture.

The pins that make up the linkage mechanism are attached to the slide plate,
The guide groove may be formed in the actuating member.

[Brief description of drawings]

FIG. 1 is an explanatory view of a main portion of a nail supply guide device in the vicinity of a nose portion of a nailing machine according to the present invention as seen from a plane, and FIG. 2 is an exploded perspective view of a door member of the guide device, and FIG.
FIG. 4 is an explanatory view of another nail supply guide device, FIG. 4 is an exploded perspective view of a door member thereof, and FIGS. 5 (a) and 5 (b) are cross-sectional views of a conventional nail supply guide device on a plane and a back surface, respectively. . Reference numeral 1 ... Nose portion, 2 ... Connection nail, 3 ... Injection port, 5 ... Fixed guide wall, 6 ... Door member, 11 ... Slide plate, 19,
28 ... Actuating member, 22 ... Operating part, 21, 27 ... Guide groove, 14, 30
… Operating pin

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 leading nail of the connecting nail and driving the nail into a workpiece, and the nose. Fixed guide wall for supplying and guiding the connecting nail, which is integrally formed with one side edge of the nail receiving opening of the injection port of the section,
A door member that is disposed to face the fixed guide wall at a predetermined interval and that is openably and closably supported by the nose portion, and the door member is provided between the door member and the fixed guide wall to connect the door member and the fixed guide wall. A nail supply passage for supplying nails to the nose portion, and a slide plate arranged on the side of the door member facing the fixed guide wall and movably in a direction approaching or moving away from the fixed guide wall. And an actuating member is disposed on the door member, and between the actuating member and the slide plate, a position where the slide plate is close to a fixed guide wall and a position where the slide plate is separated by the actuation of the actuating member are provided. A door member is provided with an operating unit that forms a linking mechanism including a moving pin and a guide groove that slidably accommodates the pin, and operates the operating member from outside the door member. Nail supply guide device of the nailing machine, characterized in that provided externally exposed.