JPH0788587A - Riveter - Google Patents

Abstract

PURPOSE: To obtain a hydraulic or hand-operated riveter capable of reducing machining hours and preventing fatigue of a worker. CONSTITUTION: This riveter is provided with two swing levers 8 for actual riveting and a mandrel 1 with a thread which enables screwing on a rivet nut and unscrewing after a rivet fastening operation. In addition a deflector in the shape of a rotary head 22 irrotationally linked to the removable spindle 16 that is connected to the threaded mandrel projecting on the front end of this device is provided on the rear end of the housing opposite from the threaded mandrel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to two pivoting levers for the actual riveting operation and a threaded mandrel which can be screwed into a rivet nut and rotated to unscrew after the riveting operation. The present invention relates to a hydraulically operated riveter or a hand riveter.

[0002]

2. Description of the Related Art As is generally known, riveting work can be carried out without difficulty using a device of this kind.
This requires a large number of operation works that are stressful to the worker, which causes fatigue during a long work period, and also requires a great deal of time to perform each operation work. Therefore, firstly the lever arm must be fully opened and the threaded mandrel must be rotated. For this purpose, it is known to screw a riveting nut with the thumb and forefinger onto the threaded mandrel of the riveter housing and to push back the handknob of the extraction tube attached to the threaded mandrel. The actual riveting operation is performed by two lever arms that are pressed inward with respect to each other. The threaded mandrel is then unscrewed from the rivet nut by actuating the draw tube. To make it easier to carry out the riveting operation, it is already known to equip the end of the threaded mandrel with an electric motor for rotating the threaded mandrel. However, the electric motor with battery required for this purpose is in this case relatively heavy in weight, which makes it more difficult to carry with the equipment and requires a relatively large force for the operator. Must be added.

[0003]

SUMMARY OF THE INVENTION The problem underlying the present invention is therefore the reduction of fatigue phenomena and machining time in the worker for his job, which permits an advantageous operation for carrying out riveting operations. Is to get a hydraulically operated riveter or hand riveter.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a draw spindle connected to a threaded mandrel located at the rear end of the device housing opposite the threaded mandrel and projecting to the front end of the device housing. It is characterized in that it is provided with turning means in the form of a rotary head which is non-rotatably connected.

In order to reduce the applied force, the invention further provides a transmission in which the rotary head is arranged in a cylindrical shape around the rear end of the device housing and at the rear end of the extraction spindle. It is proposed that it is connected to a driving entrainment device.

A rotary indicator is preferably provided on the device housing.

What can be provided for the purpose of improving the operation is
The rotary head is arranged laterally in the device housing outside the plane of the handle tube and is connected to the extraction spindle via a gear transmission. Advantageously provided in this arrangement is that the axis of rotation of the rotary head extends in a plane perpendicular to the drawing spindle and the axis of rotation carries a bevel gear which meshes with a bevel gear supported on the drawing spindle.

According to an advantageous embodiment, the rotary head is mounted on a sleeve rotatably supported at the rear end of the device housing, which sleeve is fixed in various positions depending on the operating mode of the device. it can.

For this purpose, the sleeve preferably has a fixing pin which fits into a hole provided in the device housing. It is also possible for the sleeve to be provided infinitely adjustable with respect to its rotational position by a friction fit on the device housing.

The device can be adapted to the mode of operation by the operator, is relatively light and is extremely easy to operate. This device has a relatively low weight and is shorter than the known devices, so that it can be operated advantageously and it is distinguished by its compact construction. The force to be applied can be relatively small.

[0011]

The present invention will be described in detail below with reference to the accompanying drawings.

In the band riveter for a blind rivet nut shown in FIG. 1, a threaded mandrel 1 projects outside a mouthpiece 2 fixed by a locknut 3. A threaded mandrel housing 4 is arranged in the front sleeve member 5, to which the mouthpiece 2 is also fixed. Fixing is done by the rear lock nut 6. A lever handle or grip tube 8 is fixed to the front device housing 7 by a pin 9. The front end of the tongue leg 14 is rotatably connected by means of a threaded pin 10 and a fixing nut 11, while its rear end is fixed to the device by a pin 9. Stroke set screw 1 with O-ring 12
3 is attached to the front hanger 7. A withdrawal spindle 16 extends through the rear housing 15. A guide sleeve 18 is attached to the rear housing 15 by means of threaded pins 17. A planetary gearing 19 is supported in the guide sleeve 18 and is fixed by means of a threaded pin 20. Extending from the planetary transmission 19 is a drive member 21, to which a rotary head 22 is fixed by means of threaded pins 23.

As the rotary head 22 rotates, the planetary transmission 19 is actuated via the entrainment member 21 and sequentially rotates the spindle 16. In this way, the rotary head 2
By rotating 2, it is possible to screw the threaded mandrel into the blind rivet nut and unscrew it again after the rivet setting operation.

FIG. 2 shows another embodiment. Supported on the device housing 40 is a sleeve 4 arranged to be rotatable in relation to the device housing.
It is 1. Provided on the sleeve 41 is a hole 42, through which a fixing pin (not shown) fits into a hole 43 provided on the device housing 40. In this way, the multiple holes 43 distributed around the perimeter of the assembly allow the sleeve 41 to be secured in various positions in relation to the device housing 40. However, the sleeve 41 can also be provided with a friction fit so that it can be adjusted infinitely in relation to the device housing 40. Accordingly, the sleeve 41 moves the laterally disposed rotary head thereon to a position relative to the device housing 40 such that conditions may dictate the assembly operation or be most acceptable to the operator. be able to. Connected to the rotary head 44 is a bevel gear 45, the shaft 46 of which extends at right angles to the drawing spindle 16.

The withdrawal spindle 16 has a rotary head 44.
Bevel gear 4 meshing with bevel gear 45 of shaft 46 to which is connected
8 is connected to an extension spindle 47 which supports 8. The rotary head is non-rotatably connected to the shaft 46 by pins or bolts (not shown) carried in holes 49 in the rotary head. In this way, the mandrel 1 is screwed into the threaded rivet nut by means of the transversely arranged rotary head 44 and via the extraction spindle 16 and to unscrew the threaded mandrel 1 after the riveting operation. You can The present invention thus secures a threaded rivet nut in which the rotational movement of the threaded mandrel is effected in a simple manner by the threaded heads 22, 44 and the head 44 can be moved to an optimum position. The device is obtained.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing the structure of one embodiment of the device according to the present invention.

2 is a longitudinal sectional view schematically showing the structure of another embodiment of the partial device shown in FIG.

[Explanation of symbols]

 1 Mandrel with screw thread 4 Mandrel housing device with screw thread 5 Front sleeve member 6 Rear lock nut 7 Front housing 8 Handle tube 12 O-ring 13 Stroke set screw 14 Tong leg 15 Rear housing 16 Pull-out spindle 18 Guide sleeve 19 Planetary transmission Device 21 Entrainment member 22 Rotary head 40 Device housing 41 Sleeve 44 Rotary head 45,48 Bevel gear 47 Extension spindle

Claims (9)

[Claims] 1. A riveter with two swivel levers for the actual riveting operation and a threaded mandrel which can be screwed into a rivet nut and rotated to unscrew after the rivet locking operation. At the rear end of the device housing (15, 18) opposite the mandrel (1) with a non-rotating connection to a withdrawing spindle (16) connected to the threaded mandrel (1) protruding at the front end of the device. Rotary head (2
Hydraulically or manually operated riveter, characterized in that it is provided with turning means of the form 2). 2. A transmission device in which said rotary head (22) is arranged in a cylindrical shape around the rear end of the device housing (15, 18) and at the rear end of a drawing spindle (16). 2. A riveter according to claim 1, characterized in that it is connected to entrainment means (21) for driving (19). 3. A rotation indicator has a device housing (17, 18).
The riveter according to claim 1 or 2, wherein the riveter is included in the rivet. 4. The rotary head is laterally arranged in the device housing (17, 18) outside the face of the handle tube (8) and is connected to a drawing spindle (16) via a gear transmission (10). The riveter according to claim 1, wherein the riveter is provided. 5. A rotary shaft (46) of the rotary head (44).
Characterized in that it extends in a plane perpendicular to the drawing spindle (16) and the axis of rotation (46) carries a bevel gear (45) which meshes with a bevel gear (47) carried by the drawing spindle (16). The riveter according to claim 4. 6. The rotary head (44) is mounted on a sleeve (41) rotatably supported at the rear end of the device housing, according to claim 4 or 5.
Riveter according to any one of. 7. Riveter according to claim 6, characterized in that the sleeve (41) can be fixed in various positions. 8. Riveter according to claim 7, characterized in that the sleeve (41) has a fixing pin which fits into a hole (43) provided in the device housing (40). 9. Riveter according to claim 7, characterized in that the sleeve (41) is steplessly adjustable in its rotational position by friction-fitting into the device housing (40).