DE8119147U1 - Blind riveting tool with rivet pin feed - Google Patents

Description

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BLUMBACH · WBgEf?..' BERGEN: .KRAMER ZWIRNER · HOFFMANN

PATENT ATTORNEYS IN MUNICH AND WIESBADEN —3—

Patentconsult Radeckestrasse 43 8000 Munich 60 Telephone (089) 883603/883604 Telex 05-212313 Telegrams Patentconsull Patentconsult Sonnenberger Strasse 43 6200 Wiesbaden Telephone (06121) 562943/561998 Telex 04-186237 Telegrams Patentconsult

Manfred Schwab
Scharnhorststrasse 9
6200 Wiesbaden

Blind riveting tool with rivet pin feed

The invention relates to a blind riveting tool with a compressed air supply, a compressed air-controlled

Actuating device and a channel extending from the mouthpiece through the device head to the rear for discharging

the torn rivet pins.

j It is known that the frictional forces generated during blind riveting

to pick up the broken rivet mandrels and collect them in a container on the riveting tool. This requires a corresponding movement of the riveting tool so that the rivet pin can pass through a channel into the collection container, which is located at the end of the tool head opposite the mouthpiece. Such a swivel movement is complex and requires not only physical strength, but also attention. Especially when the collecting device fills up with rivet pins,

Munich: R. Kramer Dipl.-Ing. · W. Weser Dipl.-Phys. Dr. rer. nat. · E. Hoffmann Dipl.-Ing. Wiesbaden: P. G. Blumbach Dipl.-Ing. · P. Bergen Prof. Dr.jur. Dipl.-Ing., Pat.-Ass., Pat.-Anw. until 1979 · G, Zwirner Dipl.-Ing. Dipl.-W.-Ing.

the blind riveting tool becomes heavy and handling becomes more difficult and time-consuming.

The invention is therefore based on the object of making a blind riveting device available in which a collecting container arranged on the blind riveting device for receiving the rivet pins is avoided with little technical effort.

The invention consists in the fact that the compressed air supply, in addition to the actuating device, feeds a compressed air conveyor device, which transports the torn-off rivet pins through a conveyor line into a collecting container located away from the blind riveting device.

If you want to accept the disadvantages that a collection container on the blind riveting device brings with it, because the blind riveting device becomes heavier as the collection container fills up, the collection container can also be attached to the blind riveting device in a conventional manner.

According to an expedient embodiment of the invention, there is a connection from the compressed air supply to the discharge channel for the rivet pins and compressed air is fed into the discharge channel in the discharge direction through the connection.

An advantageous embodiment is characterized in that a connection from the compressed air supply to a ring surrounding the discharge channel behind the mouthpiece

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raurn and that a bore running diagonally to the inside and inside from the annular space conveys compressed air into the discharge channel.

It is advantageous to provide several holes distributed around the circumference, running diagonally backwards and inwards.

An advantageous embodiment of the invention is characterized in that a hose line leads from the compressed air supply to a bore in the device head, which opens into the annular space behind the mouthpiece.

The annular space is expediently sealed from the device head by O-ring seals, and the annular space is provided at a distance from the chuck arranged in the mouthpiece.

The invention will be explained in more detail below using an exemplary embodiment in a partially schematic representation «

The drawing shows a blind riveting device 1, which consists of a handle part 2 and a device head 3 as the main parts. The handle part 2 carries an actuating element 3, which actuates the blind device 1 driven by compressed air via a plunger 4.

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A compressed air supply 5 is connected to the operating device (not described in more detail), from which a connection 6 leads to the discharge channel 7 for the rivet pins in the device head 3. For this purpose, a hole 8 is provided in the device head 3, through which the compressed air from the connection 6 passes into an annular space 9. This annular space S is arranged behind the mouthpiece 10 of the blind riveting device 1, at a distance from the chuck 11 arranged in the mouthpiece 10. The annular space 9 is sealed off from this device head 10 by O-ring seals 12, so that the compressed air fed into the annular space 9 can only escape via a hole 13 that leads from the annular space 9 into the discharge channel 7.

The bore 7 runs from the annular space 9, which surrounds the discharge channel 7, diagonally backwards and inwards. As a result, the compressed air in the discharge channel 7 moves backwards away from the mouthpiece of the device head 3, and the pins torn off during the riveting process are sucked into the discharge channel 7 and transported backwards with the compressed air. From there they reach a conveyor line 14, which leads to a collecting container 15 located away from the blind riveting device 1. This can be located up to 5 m away from the blind riveting device 1. This makes it possible for the blind riveting device to be handled without impairment and does not become heavier due to the accumulation of rivet pins after a number of riveting processes.

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However, if special circumstances make a collecting container 16 attached to the blind riveting device appear desirable, then such a container can be attached to the device head 3 at the end opposite the mouthpiece 10. The rivet pins then do not end up in the alternatively possible delivery line 14, but in the collecting container 16 attached to the device head 3, in which a vent opening 17 is provided through which the compressed air can escape.

In this way, a blind riveting device is made available that is not impaired in its handling even when a large number of riveting processes are carried out, as the rivet pins are discharged into a container that is away from the device. The conveyor line from the blind riveting device to the container is long enough so that handling is not impaired during the most diverse work processes, for example on the conveyor belt.

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Manfred Schwab

"Blind riveting tool with rivet pin feed"

"Summary

In the case of a blind riveting device with a compressed air supply, this is not only used for the actuation device of the blind riveting device, but also for a compressed air conveyor device that transports the rivet pins that are torn off during the riveting process into a container located away from the blind riveting device.

Claims (8)

: : : : : . ,. : BLUMBACH · W6§ER * $,&Egr;&Kgr;&sgr;&Egr;(&Ngr;&iacgr; ,KRAMER ZWIRNER - HOFFMANN PATENT ATTORNEYS IN MUNICH AND WIESBADEN Patenlconsult Radedcestrasse 43 800G Munich 60 Telephone (089) 883603/803604 Telex 05-212313 Telegrams Patentconsull Patenlconsull Sonnenberger Strasse 43 63:00 Wiesbaden Telephone (06121)562943/561998 Telex 04-1B6237 Telegrams Patentconsull Manfred Schwab
Scharnhorststrasse 9
6200 Wiesbaden easprüche S 1. Blind riveting device with a compressed air supply to an actuating device that can be controlled by the compressed air and a channel extending from the mouthpiece through the device head to the rear for removing the torn-off rivet pins, characterized in that the compressed air supply (5) feeds a compressed air conveyor device in addition to the actuating device, which transports the torn-off rivet pins through a conveyor line (14) into a collecting container (15) located away from the blind riveting device (1). 2. Blind riveting tool according to claim 1, characterized in that the collecting container (16) is attached to the blind riveting device (1) in a manner known per se. 3. Blind riveting tool according to claim 1 or 2, characterized in that from the compressed air supply (5) iviUMuMcii. ... infamous Dipl.-Ing. · W. Weser Dipl.-Phys. Dr. rer. nat. · E. Hoffmann Dipl.-Ing. Wiesbaden: P. G. Blumbach Dipl.-Ing. · P. Bergen Prof. Dr. jur, Dipl.-Ing., Pat.-Ass., Pat.-Anw. until 1979 · G. Zwirner Dipl.-Ing. Dipl.-W.-Ing. ■ a connection (6) to the discharge channel (7) for the rivet pins and through the connection (6) compressed air in discharge
\ direction into the discharge channel (7). 4. Blind riveting tool according to claim 3, characterized in that there is a connection (6) from the compressed air supply (5) to an annular space (9) surrounding the discharge channel (7) behind the mouthpiece (10) and that a bore (13) extending obliquely backwards and inwards conveys compressed air from the annular space (9) into the discharge channel (7). 5. Blind riveting tool according to claim 4, characterized in that a plurality of bores (13) are provided which are distributed over the circumference and extend obliquely backwards and inwards. 6. Blind riveting tool according to one of claims 3 to 5, characterized in that a hose line (6, 8) leads from the compressed air supply (5) to a bore in the tool head (3) which opens into the annular space (9) behind the mouthpiece (10). 7. Blind riveting tool according to one of claims 3 to 6, characterized in that the annular space (9) is sealed from the mouthpiece (10) by O-ring seals (12). 8. Blind riveting tool according to one of claims 1 to 7, characterized in that the annular space (9) is provided at a distance from the clamping chuck (11) arranged in the mouthpiece (10).