JP2787005B2 - Hog ring fastening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hog ring fastening device such as a C ring fastening device.

[0002]

2. Description of the Related Art FIG. 5 is a schematic view showing a conventional C-ring fastening device. As shown in FIG.
, A magazine 2 is attached to the vicinity of the fastening portion, one end of a spiral spring 5 is attached to the C-ring fastening device main body 1, a C-ring feed member 3 is attached to the other end of the spiral spring 5, and a C-ring feed member 3 is attached. The C-ring feeder is configured to feed the C-ring loaded in the magazine 2 by the C-ring feed member 3 and the spiral spring 5.

In this C-ring fastening device, FIG.
As shown in FIG. 7, a large number of C rings 6 are arranged in
By bonding the adhesive tape 7 to the back of the ring 6,
A C-ring assembly 8 in which a large number of C-rings 6 are integrated is formed, and the C-ring feed member 3 is moved against the spiral spring 5 so that the C-ring feed member 3 is removed from the magazine 2. When the magazine 2 is loaded with the C-ring assembly 8 and the magazine 2 is then inserted into the hole 4, the force of the spiral spring 5 is applied to the C-ring via the C-ring feed member 3.
Acting on the ring assembly 8, the C-ring assembly 8 is sent to the fastening portion.

[0004]

However, this C
In the ring fastening device, since the length of the C-ring assembly 8 cannot be longer than the length of the magazine 2, a large number of C-rings 6 cannot be loaded at one time, and the loading of the C-ring assembly 8 is not possible. Since the number of times is increased, the C-ring fastening operation becomes troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a hog ring fastening device capable of greatly improving the efficiency of a hog ring fastening operation.

[0006]

According to the present invention, there is provided a hog ring fastening device having a magazine attached to a body of a hog ring fastening device and a main air cylinder for rotating a jaw. In the above, attached to the hog ring fastening device body and
A feed air cylinder to which air discharged from the main air cylinder is supplied when the jaw is opened by the main air cylinder, and a feed air cylinder attached to a piston rod via a one-way rotating device. And a feed member provided at a position to be brought into contact with the hog ring loaded in the magazine.

[0007]

In this hog ring fastening device, when the jaw is opened by the main air cylinder , the air discharged from the main air cylinder is supplied to the feed air cylinder, so that the feed member moves. Since the hog ring is fed back by the feed member and the one-way rotating device prevents the hog ring from returning, the front part of the hog ring assembly can be pushed to feed the hog ring assembly.

[0008]

FIG. 1 is a schematic view showing a C-ring fastening device according to the present invention, FIG. 2 is an enlarged sectional view taken on line AA of FIG. 1, and FIG.
FIG. 4 is a pneumatic circuit diagram of an air cylinder of the C-ring fastening device shown in FIGS. 1 to 3. As shown in the figure, a jaw 12 for deforming the C-ring 6 is provided on the C-ring fastening device main body 1, and a main air cylinder 11 for rotating the jaw 12 is provided on the C-ring fastening device main body 1, The C-ring fastening device main body 1 is provided with a push button type directional switching valve 13, and a push button 14 of the directional switching valve 13 projects from the C-ring fastening device main body 1.
4 is provided, an air flow path 16 communicating with a pneumatic supply port of the direction switching valve 13 is provided in the C-ring fastening device main body 1, and an air hose 1 is provided in the air flow path 16.
7 is connected to a compressed air supply device (not shown) at the other end of the air hose 17, and an air passage communicating with the exhaust port of the direction switching valve 13 to the C-ring fastening device body 1. 18 and 19 are provided. A feed air cylinder 21 is attached to the C-ring fastening device main body 1 via a bracket 20, and the air flow path 19 and the feed air cylinder 21 are connected via an air hose 29. 22 air holes 23
There is a slight gap between the outer peripheral surface of the piston 31 of the feed air cylinder 21 and the inner peripheral surface of the air cylinder body 22, and a spring 32 is provided between the piston 31 and the air cylinder body 22. A moving member 25 is attached to the piston rod 24 of the feed air cylinder 21, and a pair of supporting members 26a and 26b are attached to the moving member 25 so as to be rotatable about a line perpendicular to the plane of FIG.
Are attached to the supporting members 26a and 26b, a one-way bearing 27a that rotates only in the counterclockwise direction in FIG. 1 is attached to the supporting member 26a, and a one-way bearing that rotates only in the clockwise direction in FIG. 27b
Are attached, and the feed members 28a, 28b are attached to the one-way bearings 27a, 27b.
Reference numerals a and 28b are provided at positions to be in contact with the C-ring 6 engaged with the magazine 2. When the direction switching valve 13 is at the position a, the air flow path 16 and the main air cylinder 11
Is connected to the port 11b of the main air cylinder 11 and the feed air cylinder 21, and when the directional control valve 13 is at the position b, the air flow path 1
When the direction switching valve 13 is at the position c, the air flow path 16 is connected to the port 11b of the main air cylinder 11, and the port 11a of the main air cylinder 11 is connected to the air flow path 18. Are connected.

In this C-ring fastening device, when the compressed air supply device is connected to the other end of the air hose 17 and the trigger 15 is not pulled, the direction switching valve 13 is set to a
In this position, compressed air is supplied from the compressed air supply device to the port 11a of the main air cylinder 11, so that the main air cylinder 11 is extended and the jaw 12 is opened. In this state, when the trigger 15 is pulled, the direction switching valve 13 becomes the c position via the b position, and compressed air is supplied from the compressed air supply device to the port 11b of the main air cylinder 11, so that the main air cylinder 11 As the jaws 12 are reduced, the jaws 12 are closed, the C-ring 6 is deformed by the jaws 12, and the material to be fastened (not shown) is fastened by the deformed C-ring 6. When the finger is released from the trigger 15 from this state, the direction switching valve 13 becomes the a position via the b position, and compressed air is supplied from the compressed air supply device to the port 11a of the main air cylinder 11, so that the main air As the cylinder 11 extends, the jaws 12 open. Thus, the fastening operation is performed. When the directional control valve 13 is at the position a, that is, when the main air cylinder 11 is extended.
When the jaw 12 is opened, the main air cylinder 11
4 is supplied to the feed air cylinder 21, the piston 31 moves to the right in FIG. 4 against the spring 32, and when the piston 31 passes through the hole 23, the hole 2
3 communicates with the air cylinder chamber, so that the piston 31 does not move any further to the right in FIG. Then, after the piston of the main air cylinder 11 moves to the right end in FIG. 4, no air is supplied to the feed air cylinder 21, and moreover, there is a gap between the outer peripheral surface of the piston 31 and the inner peripheral surface of the air cylinder body 22. Since there are some gaps, the piston 31 moves to the left end in FIG. Therefore, when the finger is released from the trigger 15 with the trigger 15 pulled, the moving member 24 first moves to the right in FIG. 1 and then moves to the left in FIG. When the moving member 24 moves rightward in FIG. 1, the feed members 28a and 28b move rightward in FIG.
The feed members 28a, 28b are pressed against the C-ring assembly 8 loaded in the magazine 2, and the one-way bearing 27a does not rotate the feed member 28a clockwise in FIG. Since the feed member 28a does not rotate counterclockwise in FIG. 1, the front portions of the C-ring assembly 8 can be pushed by the feed members 28a and 28b to feed the C-ring assembly 8. For this reason, the leading C-ring 6 of the C-ring assembly 8 is supplied to the open jaw 12. When the moving member 24 moves to the left in FIG. 1, the feed members 28a and 28b move to the left in FIG. 1, but the feed member 28a rotates counterclockwise in FIG.
1 rotates clockwise in FIG. 1, so that the C-ring assembly 8 loaded in the magazine 2 does not return. Accordingly, when the trigger 15 is pulled, the material to be fastened can be fastened by the C ring 6, and when the finger is released from the trigger 15, the C ring 6 is supplied to the jaw 12.

In such a C-ring fastening device,
Since the C-ring assembly 8 can be fed by pushing the front portion of the C-ring assembly 8, the length of the C-ring assembly 8 can be greatly increased. Since the operation can be significantly simplified, the efficiency of the fastening operation by the C-ring 6 can be greatly improved.

In the above embodiment, the C-ring fastening device has been described, but it is apparent that the present invention can be applied to other hog ring fastening devices. Further, in the above embodiment, the two feed members 28
Although a and 28b are provided, one feed member may be provided.

[0012]

As described above, in the hog ring fastening device according to the present invention, the front portion of the hog ring assembly can be pushed to feed the hog ring assembly, so that the length of the hog ring assembly can be reduced. Since it can be made very large, the work of loading the hog ring assembly can be remarkably simplified, and the efficiency of the fastening work by the hog ring can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a C-ring fastening device according to the present invention.

FIG. 2 is an enlarged sectional view taken on line AA of FIG. 1;

FIG. 3 is a view as seen in the direction of arrow B in FIG. 2;

FIG. 4 is a pneumatic circuit diagram of an air cylinder of the C-ring fastening device shown in FIGS.

FIG. 5 is a schematic view showing a conventional C-ring fastening device.

FIG. 6 is a plan view showing a C-ring assembly.

FIG. 7 is a side view showing the C-ring assembly shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... C-ring fastening device main body 2 ... Magazine 11 ... Main air cylinder 12 ... Jaw 21 ... Feed air cylinder 24 ... Piston rod 27a ... One way bearing 27b ... One way bearing 28a ... Sending member 28b ... Sending member

Claims (1)

(57) [Claims] And 1. A magazine that is attached to the hog ring fastening device main body, the hog ring fastening device having a main air cylinder for rotating the jaws mounted to said hog ring fastening device main body and said main Eashiri
A feed air cylinder to which air discharged from the main air cylinder is supplied when the jaw is opened by a cylinder, and a piston rod of the feed air cylinder which is mounted via a one-way rotating device and is loaded in the magazine. A hog ring and a feed member provided at a position to be in contact with the hog ring.