JPH05237585A - Holding body for blind rivet - Google Patents

Abstract

PURPOSE:To provide a blind rivet holding body, which can be used as a roll type by housing into an in-housing case while winding into roll state and also, is firmly held to a plastic long body. CONSTITUTION:In the blind rivet holding body used in a successive riveter, rectangular tabs 101 having gaps 103 at a fixed interval are arranged to the upper and lower parts of the plastic long body having almost U-shape, and feeding holes 105 are arranged to a perpendicular part 102. In the upper and lower tabs 101, 101, through-holes 104, 104 for inserting a shaft 33a of the blind rivet 33 and one or more pieces of slits 109 radiately having a prescribed length are knotched.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind rivet holder for use in a continuous rivet machine capable of continuously striking blind rivets.

[0002]

2. Description of the Related Art A conventional riveter is disclosed in, for example, Japanese Patent Laid-Open No. 61-61.
As disclosed in Japanese Laid-Open Patent Publication No. 7852, when the rivet is set, the blind rivet shafts are inserted one by one from below the nose piece, and after the rivet setting, the cut shaft of the blind rivet is set as the riveter. It was designed to be ejected from the top.

In the conventional riveter as described above, it is troublesome because the rivets must be mounted one by one.

Therefore, a blind rivet is automatically supplied, and a continuous rivet that prevents the broken blind rivet shaft from scattering is disclosed in Japanese Patent Application No. Hei 3 (1999) -163.
It has been filed as No. 152150 (claiming priority based on Japanese Patent Application No. 2-146850).

A rivet holder used for this continuous riveter is Japanese Patent Application No. 1-88994 dated July 28, 1991.
No. (Actual Kaihei No. 3-31040), this rivet holder is provided with tabs 51 having slits 57 formed at regular intervals at upper and lower edges as shown in FIGS. The vertical portion 52 is provided with a feed hole 55 and is provided with upper and lower slits 57, 5 of a plastic elongated body having a substantially U-shaped cross section.
The shaft 33a of the blind rivet 33 is inserted through 7 and held in parallel.

[0006]

However, since the rivet holder 54 does not bend in a roll shape, it is endlessly wound in a cylindrical storage case for storage, and the storage case cannot be mounted on a continuous riveter and carried. Can not.
Therefore, the cartridge type rivet holders of a predetermined length must be bundled and carried together with the continuous riveter for use, and it is troublesome to carry an extra item and to replace it when one rivet holder is used up, which is inconvenient. there were.

In some cases, the blind rivet may come off the plastic elongated body during transportation.

The present invention has been made in view of the above circumstances and can be used not only as a cartridge type but also as a roll type by winding it in a roll and storing it in a storage case, and the blind rivet is firmly attached to a long plastic body. The present invention provides a retained blind rivet holder.

[0009]

The blind rivet holder of the present invention is a long plastic body having a substantially U-shaped cross section, which has tabs provided at upper and lower edges and a vertical portion provided with a feed hole. The tab has a through hole and at least one slit radially cut from the tab with a predetermined length, and blind rivet shafts are held in parallel in the upper and lower through holes. Characterized by

Further, one of the tabs at the upper edge portion or the lower edge portion is a tab provided with a through hole and a slit opened toward the tip from this, and the tab is rectangular. It is characterized in that they are arranged at regular intervals.

[0011]

Since the blind rivet is inserted through the through hole, it cannot be removed from the rivet holder.

Since the through hole is provided with at least one slit radially from the through hole, if the diameter of the through hole is made slightly smaller than the shaft diameter of the blind rivet, the shaft of the blind rivet is inserted. When this is done, the slit is elastically urged by the opening force, and the through hole is in a state of tightening the shaft.

Further, since the blind rivet holder has gaps formed at regular intervals at the upper and lower edges of the U-shaped plastic elongated body, the blind rivet holder can be endlessly wound and stored in a cylindrical storage case.

[0014]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 4 show the third aspect of the present invention.
FIG. 5 is an enlarged front view of the upper tab of claim 2 showing an embodiment of the present invention. is there.

The blind rivet holder 100 is an elongated plastic body having a substantially U-shaped cross section, and rectangular tabs 101 are formed at upper and lower edges thereof at regular intervals.
03 are arranged apart from each other.

Then, rectangular feed holes 105 are formed in the vertical portion at regular intervals. The upper and lower tabs 101,
In the vicinity of the tip of 101, through holes 104, 104 and two slits 106, 106 are radially cut from this, and the tips of the slits are stopped by small holes 107, 107. The diameter of the through holes 104, 104 is formed to be slightly smaller than the diameter of the shaft 33 a of the blind revetment 33.

According to the third aspect of the blind rivet holder of the present invention, the upper and lower tabs 101, 101 have the same shape, as shown in FIG.

According to the second aspect of the blind holder of the present invention, as shown in FIG. 5, only the upper tab 108 has a through hole 109 near the tip and a slit 110 is opened toward the tip.

FIG. 9 to FIG. 18 show an example of a continuous rivet that can continuously strike blind rivets using the blind rivet holder 100.

This continuous riveter is composed of a main body A, a drive section B and a rivet supply section C. 9 and 10
The overall view of the state in which the lever of the repeating riveter is released by the combination of.

The combination of FIGS. 11 and 13 and the combination of FIGS. 12 and 13 are general views of the state in which the lever of the continuous riveter is gripped, respectively, and the piston position in the air cylinder shown in FIG. The position of each piston and blind rivet changes from FIG. 11 to FIG.

The drive portion B has a small-diameter oil cylinder 12 branched laterally from the main body A and a large-diameter air cylinder 1, and the tip of a piston rod 3 of a piston 2 housed in the air cylinder 1 Oil chamber 1 with oil cylinder 12
2a is slidably fitted.

A shaft hole 41 communicating with the air supply port 40 at the lower rear end and the valve chamber 44 is provided in the lower portion of the air cylinder 1. Large diameter portions formed at the front and rear ends of the shaft hole 41 communicate with the communicating holes 42, 4.
3 communicates with the inside of the air cylinder 1. A valve shaft 6 having a valve 8 fixed to the rear end and a plug 70 closing the shaft hole 41 at the front end is slidably accommodated in the shaft hole 41. The valve shaft 6 is biased forward by a spring 25.

An operating lever 9 and a valve cam 10 are provided below the front ends of the oil cylinder 12 and the air cylinder 1, respectively.
Spring pins 45, 4 which urge them clockwise
6, and the operation lever 9 and the valve cam 10 are connected to the spring pins 47, 4 at their respective upper ends.
They are connected by a connecting rod 11 pivotally attached at 8. The tip of the valve cam 10 is in contact with the front surface of the stopper 70 of the valve shaft 6.

In the main body A, a tubular rivet nose 18 is connected via a chuck cylinder 73 to the lower portion of the pneumatic hydraulic cylinder 5 integrally formed with the oil cylinder 12. Inside the air hydraulic cylinder 5, an air hydraulic piston 13 that defines the inside of the air hydraulic cylinder 5 into an upper air chamber 5b and a lower oil chamber 5a is housed.
A cylindrical body 13 a is integrally formed on the lower portion of the unit 3. The air chamber 5b communicates with the air chamber 72 formed in the rear portion of the valve chamber 44 of the drive unit B via the pipe 71, and the oil chamber 5a communicates with the oil chamber 12a of the oil cylinder 12. is doing.

Inside the chuck cylinder 73, a hollow chuck piston 7 having a cylindrical body 74 integrally formed in the lower portion thereof is provided.
5 are accommodated. A coil spring 76a is installed inside the cylinder 13a of the pneumatic hydraulic piston 13, and a rod 76 urged downward by the coil spring 76a emerges from the lower wall of the cylinder 13a. The chuck piston 75 is attached to the tip of the rod 76.
A hollow jaw case 77 that is slidably fitted to the cylindrical body 74 is attached.

On the inner surface of the tip of the jaw case 77, there is provided a tapered surface 78 having a smaller diameter toward the tip, and the pair of jaws 14 are slidably fitted to the tapered surface 78. Each jaw 14 is urged downward and outward by a spring 79 housed in a jaw case 77 via a sharp jaw pusher 80. The lower end of the cylindrical body 74 is closed except for the shaft hole of the shaft center, and in the state of FIGS. 9 and 12, the lower wall 7 thereof is closed.
The tips of the jaw case 77 and the jaw 14 are in contact with 4a.

An air chamber 81 below the chuck piston 75 in the chuck cylinder 73 is communicated with a ventilation port 82 provided at the front end of the air cylinder 1 of the drive section B through a conduit 83. Further, as shown in FIG. 17, a pair of nose pieces 19 are rotatably provided inside the lower end of the rivet nose 18 by pins 50, 50, and by springs 29, 29 housed at the tip ends of the pair of set screws 51. They are urged inwardly toward each other.

Reference numeral 53 in FIG. 17 denotes a passage hole for a rivet 33, which will be described later, and 100 denotes a blind rivet holder, which will be described later. The blind rivet holder 100 is
As shown in FIGS. 1 to 3, it is made of polypropylene or the like and has a U-shaped cross section.
1, 101, and through holes 104, 104 for holding rivets are formed near the tips of the tabs 101, 101. Then, the upper and lower through holes 104, 10
The shafts 33a of the rivets 33 are inserted into the respective 4 and are held slidably in the vertical direction. In the case of the blind rivet holder according to claim 2, the through hole 109 of the upper tab 108
The shaft 33a is vertically inserted into the through hole 104 of the lower tab 101.

The rivet supply section C has a tape air cylinder 58 and a guide plate 59 integrally attached to the side surface of the rivet nose 18 as shown in FIGS. 14 to 17, and inside the tape air cylinder 58. As shown in FIG. 15, a piston 22 biased forward by a spring 31 is accommodated, and the piston 22 has a feed pawl 23.
A shaft 23 having a (FIG. 15) is fitted and set with a screw 23b for preventing slipping out. The air cylinder 58 communicates with a port 81a above the chuck cylinder 73 of the drive unit B via a conduit 84 as shown in FIG. In FIGS. 14 and 15, 58a is a port connected to the conduit 84.

A pair of upper and lower projections 60, 60 for guiding the blind rivet holder 100 are formed on the guide plate 59, and a long hole 61 (FIGS. 9, 11) for reciprocating the feed claw 23a. (Figs. 12, 15 and 16)
Is open. Reference numeral 20 in FIG. 17 denotes a rivet holder pressing plate, which has a rivet nose 18, a piston 21,
21 and springs 30 and 30 for pressing the spring 21 and 21. The springs 30 and 30 are attached to the blind rivet holder 1.
00 is elastically pressed against the guide plate 59. 30a
Is a plate which is attached to the rivet nose 18 with screws (not shown), contacts the rear ends of the springs 30 and 30, and presses the springs 30 and 30 toward the pistons 21 and 21. Reference numeral 34 is a storage case for the blind rivet holder 100. The storage case 34 is formed in a cylindrical shape whose axial direction is perpendicular to the longitudinal direction of the guide plate 59, and the blind rivet holder 1 is formed along the cylindrical shape.
00 is wound and the blind rivet holder 100 is discharged along the guide plate 59.

Next, the operation of the continuous riveter will be described. Normally, the blind rivet holder 100 is loaded in the storage case 34 of the continuous rivet and is in use, the state is as shown in FIG. 9, the operation lever 9 is released, and the rivet 3 is released.
3 pushes open a pair of nosepieces 19 and projects to the lower surface thereof.

In this state, first, the air supply port 40 is connected to a pressure air supply device (not shown), and then the tip of the rivet 33 is inserted into the hole of the sheet metal 63 as shown in FIG. 9, and the operating lever 9 is gripped. As shown in FIG. 13, since the valve cam 10 rotates counterclockwise via the connecting rod 11, the valve shaft 6
And the valve 8 retracts. As a result, the compressed air enters the air cylinder 1 through the communication hole 43, so that the piston 2 moves forward and the oil in the oil chamber 12a enters the oil chamber 5a in the main body A as shown in FIG. Push up to the upper limit position.

Therefore, the rod 76 and the jaw case 77 rise. In this case, since the pair of jaws 14 are biased downward by the spring 79 via the jaw pushers 80, the jaws 77 slide downward on the tapered surface 78 of the jaw case 77 and approach each other and approach the rivets 33. Ascending while grasping the shaft 33a. The rising of the shaft 33a causes the rivet 33 to be caulked, and then the tip of the nose piece 19 disconnects the shaft 33a from the rivet 33.

When the forward movement of the piston 2 is completed (FIG. 13), the air in the air cylinder 1 is supplied from the ventilation hole 82 of the air cylinder 1 to the air chamber 81 through the conduit 83 (FIG. 12). Therefore, as shown in FIG. 12, the chuck piston 75 and the cylindrical body 74 rise, and at the time of this rising, the liner 74a in the cylindrical body 74 first contacts the tip of the chuck 14 and pushes it up, and then the chuck rod 77 moves. Contact the tip. Therefore, at this time, the jaw 14 is opened. further,
From this position, the cylinder 74 further rises, and the jaw case 7
7 rises while compressing the spring 76a, and the state shown in FIG. 12 is obtained.

When the chuck piston 75 rises to the top dead center (FIG. 12), the compressed air that has entered the chuck cylinder 73 through the conduit 83 is supplied from the port 81a to the conduit 8.
4 through the tape air cylinder 58 of the rivet supply section C
(FIG. 15) (FIG. 15 is a sectional view taken along line D-D of FIG.
15 is a perspective view of the rivet supply part C excluding the storage case 34 in FIGS. 9, 11 and 12 as viewed from the rear side), and the piston 22 is supplied in the direction of the arrow through the port 58a. The spring 31 moves in the direction (leftward in FIG. 12) while compressing, and the feed claw 23a at the tip of the shaft 23 moves rightward (leftward in FIG. 12) along the long hole 61. 100
The feed claw 23a engaged with the feed hole 105 of the guide 1 pulls out the blind rivet holder 100 from the storage case 34, and moves the blind claw 1a along the pair of ridges 60, 60 of the guide plate 59.
The pitch is moved, and the tip of the rivet 33 is set at a predetermined position in the rivet nose 18 (FIG. 12).

Then, when the operating lever 9 is released, as shown in FIG.
As shown in FIG. 9, the valve cam 10 rotates clockwise through the connecting rod 11 so that the valve 8 is closed by the acting force of the spring 25, and the compressed air passes through the air chamber 72 and the pipe 71 and becomes empty as shown in FIG. Since it is supplied to the air chamber 5b of the hydraulic cylinder 5, the rod 76, the jaw case 77, the piston 13, the chuck piston 75, and the cylinder 74 are pushed down to the lower limit position.
At that time, as shown in FIG. 1, the upper end of the shaft 33a of the rivet 33 enters between the pair of jaws 14 and contacts the lower end of the jaw pusher 80, so that the rivet 33 is pushed down. Then, the pair of nosepieces 19 at the lower end are pushed open, and then the nosepieces 19 project from the lower surface and stop.

At this time, at the same time, the supply of compressed air to the air cylinder 58 of the rivet supply section C is stopped, and the compressed air in the air cylinder 58 communicates with the atmosphere, so that the piston 22 moves leftward by the acting force of the spring 31 (see FIG. 15). ) (Rightward in FIG. 9)
However, since the holding tape 54 is stopped from moving to the left (FIG. 15) (to the right in FIG. 9) by the non-return claw 59a, the feeding claw 23a is fixed while the blind rivet holder 100 is stationary. It disengages from the feed hole 105, moves one pitch forward, and engages with the feed hole 105 (FIG. 9) in front.

Although one rivet 33 is crimped as described above, rivet setting can be continuously performed by repeating the above operation. Also, the cut shaft 3
3a is a through hole 104, 104 (10) of the blind rivet holder 100 as shown in FIGS.
(9, 109), the blind rivet holder 100 is discharged integrally with the blind rivet holder 100 through the passage hole 53 (FIG. 17).

When the blind rivet holder 100 in the storage case 34 becomes empty or when the blind rivet holder 100 is first loaded and the continuous rivet is used, the blind rivet is placed at the position shown in FIG. When the leading rivet 33 of the holding body 100 is positioned and then the lever 9 is gripped to raise the pneumatic hydraulic piston 13 and the chuck piston 75, one rivet 33 is fed at the same time. At this time, the lower end of the cylinder 74 below the chuck piston is in the position shown in FIG. 12, and the rivet 33 is also in the position shown in FIG.

Next, when the lever 9 is released, the hydraulic piston 1
Both the chuck 3 and the chuck piston 75 are lowered, and the state shown in FIG. 9 is reached. The rivet 33 pushes open the pair of nosepieces 19 and the head projects from the lower surface thereof, and the rivet caulking preparation is completed. Subsequent operation is the same as previously described in the description of the operation of the repeating riveter.

Incidentally, the description of the above-mentioned embodiment is made with the upper and lower tabs 10.
The description has been made centering on the case of claim 3 in which 1 is arranged with a gap 103 at a constant interval, but the present invention shows that the upper and lower tabs are integrally continuous without a gap. It goes without saying that may be. In the case of claim 1, only the cartridge type can be used, but in the case of claim 3, not only the cartridge type but also the roll type can be used.

[0043]

According to the blind rivet holder of the present invention described in detail above, when it is used in a continuous rivet, it is not only a cartridge type of a predetermined length, but also a roll type roll type storage case. Since it can be stored and used endlessly, there is no need to bring a large number of cartridge type blind rivets to the work site.

Further, since the through hole is made slightly smaller than the shaft diameter of the blind rivet, the shaft is clamped and held by the elastic force, so that it does not fall out.

Further, in the case of the structure of claim 2, when the operation lever is opened, it can be designed so that the tip of the barrel of the continuous riveter hits the upper tab of the blind rivet holder and descends until the upper tab bends. Since the through hole of the upper tab has a slit that opens toward the tip, when the upper tab bends and the tip descends, the shaft will pass through this slit, so the upper tab pushed down by the cylinder is easy. Refract to. Therefore, the stroke of the cylinder can be designed to be long, and the continuous riveter can be downsized.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view showing an embodiment of the present invention.

FIG. 4 is an enlarged front view of the upper and lower tabs according to claim 3 showing one embodiment of the present invention.

FIG. 5 is an enlarged front view of the upper tab of claim 2 showing one embodiment of the present invention.

FIG. 6 is a plan view of a conventional blind rivet holder.

FIG. 7 is a side view of a conventional blind rivet holder.

FIG. 8 is a front view of a conventional blind rivet holder.

FIG. 9 is a vertical cross-sectional view of the main body side in a state where the lever of the repeating riveter is released, showing an overall view of the repeating riveter in a combination of FIGS. 1 and 2.

FIG. 10 is a vertical cross-sectional view of the drive unit side in a state where the lever of the repeating riveter is released, showing an overall view of the repeating riveter in a combination of FIGS. 9 and 10.

FIG. 11 is a vertical cross-sectional view of the main body side in a state where the lever of the repeating riveter is gripped, and shows an overall view of the repeating riveter in a combination of FIGS. 11 and 13.

FIG. 12 is a vertical cross-sectional view of the main body side in a state where the lever of the repeating riveter is gripped, and shows an overall view of the repeating riveter in a combination of FIGS. 12 and 13.

FIG. 13 is a vertical cross-sectional view of the drive unit side in a state where the lever of the repeating riveter is gripped, and shows an overall view of the repeating riveter in the combination of FIGS. 11 and 13 and the combination of FIGS.

FIG. 14 is a perspective view of the rivet supply unit, excluding the storage case in FIGS. 9, 11, and 12, as viewed from the back side.

15 is a cross-sectional view taken along the line DD of FIG.

FIG. 16 is a view of the guide plate of FIG. 14 seen from the front where the ridge can be seen.

FIG. 17 is a side view of a rivet nose portion.

FIG. 18 is an explanatory diagram of the vicinity of a rivet supply unit when a blind rivet holder is loaded.

[Explanation of symbols]

 A main body B drive unit C rivet supply unit 1 air cylinder 2 piston 3 piston rod 5 air hydraulic cylinder 5a oil chamber 8 valve 12 oil cylinder 12a oil chamber 13 air hydraulic piston 14 jaw 18 rivet nose 19 nosepiece 33 blind rivet 33a shaft 54 Blind rivet holder 58 Tape air cylinder 73 Chuck cylinder 74 Cylindrical body 74a Liner 75 Chuck piston 76 Rod 76a Spring 77 Jaw case 78 Tapered surface 79 Spring 80 Jaw pusher 81 Air chamber 81a Port 100 Blind rivet holder 101 Tab 102 Vertical part 103 Gap 104 Through hole 105 Feed hole 106 Slit 107 Small hole 108 Upper tab 109 Through hole 110 Slit

Claims (3)

[Claims] 1. A plastic elongated body having a substantially U-shaped cross section, which comprises tabs provided at upper and lower edges and a vertical portion provided with feed holes, wherein the tabs have through-holes and radial portions. A blind rivet holder, which has at least one slit cut in a predetermined length, and shafts of blind rivets are held in parallel in the upper and lower through holes. 2. The blind rivet holder according to claim 1, wherein either one of the tabs at the upper edge portion or the lower edge portion is a tab provided with a through hole and a slit opened toward the front end thereof. 3. The blind rivet holder according to claim 1, wherein the tabs are rectangular and are arranged at regular intervals.