JP3901506B2 - Driving guide device for nailing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a nailing machine for driving a nail supplied into a nail injection port formed in a nose portion to a driven material through a driver that is driven impactively by power such as compressed air. The present invention relates to a driving guide device in a nailing machine for guiding a nose portion forming an outlet to a driving position.
[0002]
[Prior art]
Conventionally, when nailing a nail into a groove of a floor material ridge, corrugated plate or outer wall material or interior material with a nailing machine, the nail injection part of the nail driving machine is nailed. In order to position it, a driving guide member having a shape adapted to the shape of the floor material, the corrugated plate or the groove is attached to the tip of the nose portion of the nailing machine forming the nail injection port. The guide member is pressed against each material to be driven, and the injection portion of the nailing machine is guided to the nail driving position to be positioned. It is desirable that the driving guide member can be rotated in any direction with respect to the nose part of the nailing machine depending on the posture of the worker and the extending direction of the driven material such as the floor material. In some cases, it is impossible to rotate, or because it can rotate freely, it rotates inadvertently and the direction intended by the operator cannot be determined.
[0003]
In order to solve the above problem, as shown in FIG. 5, a contact arm 2 slidable along the nose portion is provided on the outer peripheral surface of the nose portion 1 forming the injection portion of the nailing machine. A device in which the driving guide 3 is attached to the tip of the contact arm 2 has already been proposed. The driving guide 3 is formed into a hollow shape by cold forging or the like and the tip surface is formed into an arbitrary shape suitable for the material to be driven, and a hole 4 is formed on the peripheral wall surface, and the steel ball 5 is placed in the hole 4. The steel ball 5 is elastically pressed by attaching the elastic ring 6 to the outer peripheral surface of the driving guide 3 and elastically pressing the steel ball 5. A plurality of recesses 7 are formed at intervals, the driving guide 3 is rotatably mounted on the contact arm 2, and the steel ball 5 is fitted to the recess 7 to give a click feeling in the rotation direction. In addition to being able to change the direction of the guide, it is possible to prevent inadvertent rotation and improve workability.
[0004]
[Problems to be solved by the invention]
However, in the above prior art, a predetermined thickness is required for the peripheral wall to accommodate the steel ball 5 in the peripheral wall of the driving guide 3 formed in the hollow, and therefore the outer diameter shape of the driving guide itself is increased. There has been a problem that the volume of the tip portion of the injection portion is increased and workability is hindered. It is an object of the present invention to provide a driving guide device for a nailing machine that solves the above-mentioned conventional problems and that allows the visual confirmation of the driving site without the outer diameter shape of the tip of the injection part being large.
[0005]
[Means for Solving the Problems]
In order to solve the problems in the prior art, the present invention provides a nose having a hollow nail injection port, and is slidably disposed in the injection port of the nose and driven by compressed air or the like. a driver hammer out the supplied nails from the injection mouth, the nailing machine and a contact mechanism is operated to project located in front of the nose by contact with the struck member, constituting the contact mechanism A nose top that forms an injection port continuous with the nail injection port of the nose portion at the tip of the contact member, and a cylindrical driving guide is mounted on the outer periphery of the nose top, and the nose top and the driving guide Annular grooves are formed in both circumferential walls facing each other, and an elastic ring is attached to the annular grooves to hold the driving guide so as to be detachable from the nose top. Wherein the upper end surface of the de and were formed at regular intervals a plurality of engagement portions due to unevenness in the circumferential direction between the lower end face of the contact member.
[0006]
【The invention's effect】
Since it is not necessary to house steel balls for mounting on the peripheral wall of the driving guide, the peripheral wall can be made thin and the outer diameter of the driving guide as a whole can be reduced. Good workability without impairing workability. Further, by the action of the elastic ring without the use of steel balls, a plurality of engagement portions due to the unevenness between the contact member and the hammering guide is resiliently engaged, hammering guide inadvertently rotated Therefore, the driving guide can be maintained at the set position, and workability is improved because a click feeling can be obtained during the rotation operation. Further, the driving guide can be produced by cutting from a pipe material, and a general O-ring can be used as an elastic ring, so that the structure is simple and inexpensive.
[0007]
Furthermore, by removing the nose top from the contact member, when the nail is clogged at the injection port, the removal work can be easily performed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. FIG. 1 shows a nailing machine equipped with a driving guide according to an embodiment of the present invention. The nailing machine 10 has a batting cylinder 13 disposed in a hollow housing 12 in which a grip portion 11 is integrally formed. A striking piston 15 in which a driver 14 for striking a nail is coupled to the lower surface is slidably accommodated in the striking cylinder 13. A nose portion 17 forming a hollow nail injection port 16 is attached below the housing 12, and the driver 14 is slidably guided into the nail injection port 16 of the nose portion 17. A nail supply guide 18 is continuously provided in an opening formed on the side surface of the nail injection port 16 of the nose portion 17, and a nail supply mechanism 19 formed along the nail supply guide 18 in the magazine 20. The connecting nails are sequentially supplied into the nail injection port 16 of the nose 17.
[0009]
A main valve 21 is disposed at the upper end of the impact cylinder 13, and the main valve 21 is connected to a compressed air supply source through a plug 22 attached to the rear end of the grip portion 11 in the impact cylinder 13. The inside of the air chamber 23 and the exhaust port are selectively connected. When the main valve 21 connects the inside of the striking cylinder 13 to the air chamber 23, compressed air is introduced into the striking cylinder 13 and the striking piston 15 is driven. A trigger valve 24 for controlling the main valve 21 is disposed at the base portion of the grip portion 11. The trigger valve 24 has a trigger lever 25 that can be manually operated and a nail injection port of the nose portion 17 at the distal end portion. It is actuated by two operations with the contact mechanism 26 projectingly arranged in front of 16.
[0010]
The contact mechanism 26 includes a contact member 27 slidably supported on the nose portion 17 and a nail injection port 16 formed in the nose portion 17 so as to be detachably held on the contact member 27. A hollow nose top 28 that forms an injection port 28 a continuous with the nail injection port 16, and a contact arm 29 that is integrally connected to the contact member 27 and has an upper end disposed in the vicinity of the trigger lever 25. It is comprised by. On the distal end side of the nose top 28, a driving guide 30 having a distal end shape adapted to the shape of the driven material formed on the distal end surface is detachably mounted.
[0011]
As shown in FIGS. 2 and 3, the driving guide 30 is formed in a hollow cylindrical shape so as to accommodate the cylindrical nose top 28, and an annular groove 31 is formed on the inner peripheral surface of the driving guide 30. The driving guide 30 is held by the nose top 28 by fitting the elastic ring 32 attached to the annular groove 31 with the annular groove 33 formed on the outer peripheral surface of the nose top 28. . The upper end of the driving guide 30 is in contact with the lower end surface of the contact member 27, and when the driving guide 30 is pressed against the surface of the driven material, the upward movement of the driving guide 30 integrates the contact member 27. Move upward. The annular groove 31 of the driving guide 30 is formed deeper than the annular groove 33 of the nose top 28, and the elastic ring 32 is held in the annular groove 31 of the driving guide 30 when the driving guide 30 is attached or detached. ing.
[0012]
As shown in FIG. 3, a plurality of recesses 34 are formed in the circumferential direction on the upper edge of the contact member 30, and a plurality of circumferential projections 35 formed on the lower end surface of the contact member 27 are the recesses 34. The driving guide 30 is prevented from rotating carelessly by engaging with. When the driving guide 30 is rotated, the concave portion 34 gets over the convex portion 35 and axial displacement occurs between the driving guide 30 and the contact member 27, and the annular groove 31 and the annular groove in which the elastic ring 32 is mounted. 33 is displaced in the axial direction, and elastic force is exerted in the axial direction by the elastic ring 32. Recesses 34 and projections 35 recess 34 and the convex portion 35 is engaged by the elastic force of the elastic ring 32 is rotated to a position in alignment.
[0013]
FIG. 4 shows a state where nailing is performed on the tongue portion of the floor material F, and the shape of the tip surface of the driving guide 30 is reduced with the nailing machine directed toward the tongue portion from the driving position. The driving guide 30 is rotated so as to coincide with the direction along the extending direction of the neck. In the above embodiment, since the concave portion 34 and the convex portion 35 between the driving guide 30 and the contact member 27 are formed at intervals of 90 degrees, the driving guide 30 can be rotated with respect to the contact member 27 at intervals of 90 degrees. Is possible. If it is necessary to set the rotational position at a narrower interval, the concave portion 34 and the convex portion 35 may be formed at a further narrower interval. When the driving guide 30 is detached from the nose top 28 when nailing the workpiece F having a different shape, the elastic ring 32 is pulled by pulling the driving guide 30 toward the distal end. It can be detached from the annular groove 33 of the nose top 28 and easily removed.
[0014]
In addition, by removing the nose top 28 from the contact member 27, when the nail is clogged in the injection port, the removal work can be easily performed.
[0015]
The driving guide 30 may be made of any material such as synthetic resin or metal. However, if the driving guide 30 is made of metal, it is less likely to be elastically deformed than the rubber member when pressed against the material to be driven. Can be done.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a nailing machine equipped with a driving guide device of the present invention. FIG. 2 is a side view showing details of the driving guide portion of FIG. 1. FIG. FIG. 4 is a perspective view showing a state in which an injection portion is positioned on a tongue portion of a floor material. FIG. 5 is a side view showing a conventional driving guide.
DESCRIPTION OF SYMBOLS 10 Nailing machine 16 Nail injection port 17 Nose part 26 Contact mechanism 27 Contact member 28 Nose top 29 Contact arm 30 Driving guide 31 Annular groove 32 Elastic ring 33 Annular groove 34 Recess 35 Projection

Claims (1)

A nose having a hollow nail injection port, a driver that is slidably disposed in the injection port of the nose and driven by compressed air or the like to drive the nail supplied into the injection port from the injection port; and in the nailing machine and a contact mechanism are projected disposed in front of the nose and is operated by contact with the struck member, and nails exit of the nose portion at the distal end of the contact member constituting the contact mechanism With a nose top that forms a continuous injection port, a cylindrical driving guide is mounted on the outer periphery of the nose top, and annular grooves are formed on both opposing peripheral walls between the nose top and the driving guide, An elastic ring is attached to the annular groove so that the driving guide is detachably held with respect to the nose top, and further, between the upper end surface of the driving guide and the lower end surface of the contact member. Driving guide apparatus in nailing machine, characterized in that formed at regular intervals a plurality of engagement portions in a circumferential direction of the convex.

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