JPH11245176A - Automatic rivet driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the accurate and straight driving-in of rivets for anyone by providing an attachment for issuing rivets straight to a firing port. SOLUTION: An attachment 3 is composed of an annular attaching part 3a and a flat part 3b provided successively from the attaching part 3a, and attached to a nose by a locking pin so as to be freely detached. The flat part 3b includes a rivet guide 3c in coaxial communication with a firing port formed in the nose, a washer holding part 3d for holding a washer to be opposed to the tip side of the rivet guide 3c, and magnets 3e and 3e provided in the washer holding part 3d for adsorbing washers. A washer 8 is made of a metallic disk having a through-hole 8a bored to be smaller than the head part 9a of rivet 9 in a center position, and disposed in the washer holding part 3d such that the tip of the rivet 9 faces the through-hole 8a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an automatic rivet driving machine capable of driving rivets (pins) easily and accurately into concrete or steel plate instead of conventional welding, gunpowder and bolting. More specifically, the present invention relates to a useful automatic fastener driving machine that can drive a fastener straight with a washer (washer).

[0002]

2. Description of the Related Art Conventionally, as such an automatic rivet driving machine, for example, the one disclosed in Japanese Patent Publication No. 62-22753 is already known as a conventional example. In this conventional automatic tacking machine, a tack is loaded into an injection port by a tack feeder, and a tip pressing portion of a touch probe (contact arm) protruding from a tip of the injection port is pressed against a workpiece, and a trigger lever is pulled. By operating the trigger valve to exhaust the air in the upper chamber of the head valve from the trigger valve, the head valve in a closed state is opened, and the high-pressure air stored in the main chamber is supplied to the main cylinder. The driving piston mounted on the piston is instantaneously advanced, and the drive provided on the piston drives the tack into a workpiece such as a steel plate.

[0003]

However, in the above-described automatic tacking machine disclosed in Japanese Patent Publication No. 62-22753, the leading end of the tack attached to the injection port is free without being supported. In other words,
Because there is play between the rivet and the exit in the injection port, when the rivet is extruded with high-pressure air, the rivet tip may run out of axis, and no one can easily drive the rivet accurately and straightly. And it requires skill.

[0004] The present invention has been made in view of such conventional problems, and provides a useful automatic tacking machine that allows anyone to easily and precisely drive a tack without any skill. It is intended to do so.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and to achieve the intended object, the gist of the present invention is to use compressed air supplied from an air compressor as a power source. The present invention relates to an automatic tacking machine having a launching hole for firing a tack of a predetermined size, wherein the launching hole is provided with an attachment for driving a tack straight.

The attachment includes a rivet guide port concentrically communicating with a firing port of an automatic rivet driving machine, a washer holding portion formed at a tip end side of the rivet guide port, and the washer is provided in the washer holding portion. And an attracting member such as a magnet for attracting the magnet.

Further, it is preferable that the washer has a center hole formed so as to be smaller than the head of the stud, and is disposed in the washer holding portion such that the tip of the stud is desired in the center hole.

[0008] It is preferable that the stud is disposed in the stud guide opening with at least a tip end held in a center hole of a washer.

[0009] Further, on the tip end surface of the attachment,
Preferably, at least one or more magnets are arranged flush.

[0010] The automatic rivet driving machine of the present invention having the above-described configuration is provided with an ejection port for firing a rivet of a predetermined size using compressed air or the like supplied from an air compressor as a power source. In the above, by providing an attachment for punching a tack straight into the launch port, anyone can easily use it without skill.

[0011] Further, the attachment has a rivet guide port concentrically communicating with a firing port of an automatic rivet driving machine, a washer holding portion formed at a tip end side of the rivet guide port, and the washer is provided in the washer holding portion. Is provided with an attraction member such as a magnet for attracting the stud, accurate positioning and holding of the stud and the washer can be performed.

[0012] In particular, if the stud is disposed in the stud guide opening with at least the tip side held in the center hole of the washer, there is no play at the exit portion with respect to the stud, and the stud is compressed with compressed air (high-pressure air). When the is pushed out, shaft runout of the stud tip is prevented.

Further, the washer has a center hole drilled smaller than the head of the stud, and the center hole is disposed in the washer holding portion so that the tip of the stud is desired. A space is created in the head of the head, and the tack is held horizontally.

[0014] Further, a tip surface of the attachment is
If at least one or more magnets are arranged flush with each other, they will be vertically attracted and joined to a magnetic material such as a steel plate.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, A is an automatic driving machine according to the present invention, and the automatic driving machine A uses compressed air supplied from an air compressor as a power source, and as shown in FIG. A handle housing 1 having a size, a trigger lever 2 mounted above the handle housing 1, and an attachment 3 mounted below the housing 1 are provided.

The handle housing 1 is formed of a suitable material such as a metal or a hard synthetic resin material into a hollow shape, and is provided between the lower housing 4 serving as a lid and the lower housing 4.
Although not shown, a main valve seat, a piston driver, a trigger valve, a main valve, a main valve guide, a cylinder, a bumper, a gasket seal, and the like are provided therein.

The trigger lever 2 operates the tack driving machine in conjunction with a touch probe 5a to be described later. The trigger lever 2 is designed so as not to operate unless the touch probe 5a is securely pressed.

That is, when the tip pressing portion of the touch probe 5a protruding from the tip of the nose 5 is pressed against a workpiece such as a steel plate and the trigger lever 2 is pulled, the trigger valve is operated for the first time. ing.

On the other hand, the attachment 3 is made of a suitable material such as steel or the like, and as shown in FIG.
And a flat portion 3b of a horizontally long rectangular parallelepiped connected to the mounting portion 3a. The flat portion 3b is detachably mounted to the nose 5 via a locking pin 7.

As shown in FIG. 4, the attachment 3 has a rivet guide port 3c which communicates concentrically with a firing port 5b (see FIG. 3) of an automatic rivet driving machine formed in the nose 5.
(See FIG. 5), a washer holding portion 3d for holding the washer 8 so as to face the tip side of the tack guide opening 3c, and a magnet 3e in the washer holding portion 3d for attracting the washer 8,
3e.

The washer 8 is provided with a head 9a of the stud 9 at the center position.
It is made of a hard disk made of metal or the like and has a through hole 8a formed in a smaller size, and is disposed in the washer holding portion 3d so that the tip of the stud 9 faces the through hole 8a (see FIG. 5). The size of the washer 8 is, for example, 2-3
A steel disc having a through hole of 3.7 mm and a through hole of 3.7 mm is preferable.

The most important point for the efficient operation of the stud 9 is to select the type and length most suitable for the operation. The material is, for example, a hard steel wire or the like. It is preferable to use a metal material which has been subjected to a special heat treatment and further subjected to electrogalvanizing and chromate treatment as a rust preventive treatment.

The size of the stud 9 is, for example, head diameter:
5.7mm, wire diameter: 3.7mm, length: 14.5mm (full length)
Preferably, a smooth pin (AS pin) for concrete and a knurl pin (AK pin) for steel plate are prepared.

The automatic rivet driving machine A of the present invention constructed as described above uses an air hose (more specifically, an air socket of the hose) connected to an air compressor (not shown) adjusted to an optimum pressure in advance. It can be easily used simply by connecting it to the air plug 10 of the handle housing 1. After the washer 8 and the stud 9 are set at predetermined positions of the attachment 3 (see FIG. 5), the tip of the nose 5 protrudes. By pressing the flat portion 3b of the attachment 3 against the workpiece to retract the provided touch probe 5a and pulling the trigger lever 2, the washer 8 and the stud 9 can be driven simultaneously by the power action of the compressed air. is there.

At this time, the washer holding portion 3 of the attachment 3
Since the tip of the stud 9 is supported by the center hole 8a of the concentric washer 8 via d, the tip of the stud 9 penetrates the center hole 8a of the washer 8 because there is no play at the outlet of the firing port. Fired instantly to prevent the washer 8 from falling off with the head 9a,
It can be driven perpendicular to the workpiece (vertical launch).

Moreover, a stud 9 driven into an 8 mm H-section steel
Has the same durability as welding (thickness 4.
5 mm steel plate weighs 273 kg or more), which eliminates the need for conventional welding methods such as fastening metal plates and inner and outer walls to steel frames, as well as welding and bolting. There is no need to obtain a license as in the law, and anyone can use it easily and accurately. In the drawing, reference numeral 11 denotes a magazine capable of continuously driving about 60 studs 9, 9..., And 12 denotes a nail slide portion for feeding the studs one by one.

The automatic driving machine of the present invention is not limited to the present embodiment, but can be freely designed and changed within the scope of the present invention, and the present invention includes all of them. Is what you do. For example, as shown in FIG. 6, if at least one or more magnets 13 are arranged on the flat end surface of the attachment 3 at the same level, the end surface is seated perpendicularly to the workpiece. It is possible to forcibly prevent buckling of the stud 9 and breakage of the attachment 3 due to easy slanting due to a bad posture.

[0028]

According to the present invention, there is provided an automatic rivet driving machine having the above configuration and having a firing hole for firing a rivet using compressed air supplied from an air compressor as a power source. By providing an attachment for punching straight out, there is an effect that anyone can use the device easily without requiring skill or obtaining a license.

[0029] Further, the attachment has a rivet guide port concentrically communicated with a firing port of the automatic rivet driving machine, a washer holding portion formed at a tip end side of the rivet guide port, and the washer is provided in the washer holding portion. Is provided with an attraction member such as a magnet that attracts the stud, the stud and the washer can be reliably positioned, so that the stud and the washer can be simultaneously driven in a well-balanced manner.

Further, the washer has a center hole drilled smaller than the head of the stud, and the center hole is disposed in the washer holding portion so that the tip of the stud is desired. Since a space is formed in the head and the stud is held horizontally, the stud can be driven straight from the firing port simultaneously with the washer.

In particular, if the stud is disposed in the stud guide opening with at least the tip end side held in the center hole of the washer, there is no play at the exit portion with respect to the stud. When the is pushed out, the shaft run-out of the stud tip is prevented, so that there is an effect that anyone can easily and accurately set the stud without skill.

[0032] Further, on the tip end surface of the attachment,
If at least one or more magnets are arranged flush with each other, the magnet comes into perpendicular contact with a magnetic body such as a steel plate and the positioning and holding are performed, so that an effect of stably driving a stud can be achieved.

As described above, the automatic tacking machine of the present invention can be easily and accurately driven by anyone without any skill, and has a simple attachment structure, which is suitable for mass production. The practical value of implementing the present invention is enormous, for example, it can be supplied to consumers at a low price.

[Brief description of the drawings]

FIG. 1 is a front view showing an automatic tacking machine according to the present invention.

FIG. 2 is an explanatory view showing a state where an attachment is removed from the automatic tacking machine.

FIG. 3 shows the nose and attachment of the automatic tacking machine (No. 1).
FIG. 9 is an exploded perspective view of an embodiment (embodiment).

FIG. 4 is an explanatory view of the attachment, studs and washers.

FIG. 5 is a cross-sectional view showing a state where studs and washers are loaded in the attachment.

FIG. 6 is a perspective view showing a second embodiment of the attachment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle housing 2 Trigger lever 3 Attachment 3a Attachment part 3b Flat part 3c Tack guide opening 3d Washer holding part 3e Magnet 4 Lower housing 5 Nose 5a Touch probe 5b Firing opening 6 Spacer 7 Locking pin 8 Washer 8a Through hole 9 Tack 9 10 Air plug 11 Magazine 12 Nail slide

Claims (5)

[Claims] 1. An automatic rivet driving machine for firing a rivet of a predetermined size from a firing port by using compressed air or the like supplied from an air compressor as a power source, wherein an attachment for driving a rivet straight into the firing port is provided. An automatic tacking machine characterized by being provided. 2. The attachment according to claim 1, wherein the attachment includes a rivet guide port concentrically communicating with a firing port of the automatic rivet driving machine, a washer holding portion formed at a tip end side of the rivet guide port, and a washer in the washer holding portion. 2. The automatic tacking machine according to claim 1, further comprising an attracting member such as a magnet to be attracted. 3. The washer has a through hole formed at a center position and smaller than the head of the stud, and is disposed on the washer holding portion so that the tip of the stud faces the through hole. The automatic tacking machine according to claim 2, wherein 4. The automatic tacking machine according to claim 3, wherein said tack is provided in a tack guide opening with at least a tip side held in a center hole of a washer. 5. The automatic tacking machine according to claim 1, wherein the attachment has at least one or more magnets disposed on the tip surface thereof at the same level.