DE3323318A1 - Pressure-medium-actuated riveting tongs - Google Patents

Abstract

The invention relates to pressure-medium-actuated riveting tongs with two jaws which are arranged as an extension of the handle of the tongs, can move relative to one another and at the free ends of which are arranged the holder-up, on the one hand, and the riveting set, on the other hand. In order to create pressure-medium-actuated riveting tongs by means of which even those areas of workpieces to be riveted which are relatively inaccessible can be reached, i.e. on the one hand enables the advantages of alligator tongs to be exploited and, on the other hand, allows the relative motion of the jaws and hence of the holder-up and of the riveting set to be matched to the hole in the workpieces, it is proposed that the jaw (2) having the holder-up (4) be arranged in a fixed manner and the jaw (3) having the riveting set be arranged to allow rectilinear movement transverse to the axis of the handle (1). <IMAGE>

Description

• ι

The invention relates to a pressure medium-operated rivet gun according to the preamble of claim 1..

Such riveting pliers are generally referred to as ^M pliers. In contrast to stationary riveting tools, these pliers are used to enable riveting in places that are difficult to access, that is to say in places that cannot be reached with the stationary riveting tools.
10

The "Aligator Pliers" have two movable jaws that can be moved around a common pivot axis are, so that the arranged at the free end of the jaws riveting punch counter-holder or riveting punch a Perform a circular arc movement.

The advantage of these pliers is that the punch counter holder .and punches are arranged far to the front, in fact hard-to-reach places for rivets Workpieces, such as curvatures and the like. Can be achieved.

The disadvantage here, however, is that, on the other hand, the bores in the workpieces to be riveted are perpendicular to the workpiece surface run, so that when the rivets are pressed in, there is a discrepancy between their movement (circular path) and the hole occurs and difficulties arise as a result.

In addition to these so-called "aligator forceps" are also known rivet pliers, in which the jaw receiving the riveting die counter holder, based on the pliers handle Is designed in a C-shape and the riveting punch straight in extension of the axis of the handle on the fixed riveting die counter holder is movable too. With these pliers, however, curved areas in particular can be removed difficult to reach workpieces because the design of the fixed jaw interferes.

The object of the invention is to create a pressurized rivet gun that is also difficult to access Areas to be riveted workpieces can be reached, so on the one hand the advantages of the Aligator pliers offer can be exploited and on the other hand the relative movement of the jaws and thus of the riveting punch counter holder and the rivet punch is matched to the bore in the workpieces.

This object is achieved according to the invention by the im Characteristics of claim 1 specified training, with advantageous configurations from the features of the subclaims.

The rivet gun according to the invention is essentially characterized characterized in that the jaws on which the riveting die counter holder or the riveting die are arranged are similar to the jaws of the well-known alligator pliers

run in extension of the handle of the pliers, so that the free ends also in curved areas the workpieces are insertable. On the other hand, the straight movement of one jaw is related on the fixed jaw, achieved that when riveting in pre-drilled holes, the bore axis is perpendicular runs to the surface of the workpiece, no difficulties, e.g. tilting of the rivet occur.

The invention is explained below with reference to an embodiment shown in the drawing will.

It shows:
15th

Fig. 1 partially in section the rivet pliers and

Fig. 2 is a side view.

The riveting pliers has a hollow handle 1, in which the jaws 2 and 3 are arranged in the extension of the pliers housing are. The jaw 2, at the free end of which the riveting die counter holder 4 is provided, is permanently arranged, while the jaw 3, which has the riveting die 5 at the free end, is used for the stationary bath «· 2 can be moved in a straight line. This movable jaw 3

slides with its guide 7 on the guide surface 6. The movement takes place via a lever arrangement, which in the Cavity 23 is provided within the handle (1). In detail, this consists of a first lever 14, at one end of which a movable roller 13 is arranged, which has a nose 11 or a stop on the movable jaw 3, is in engagement, and on the other hand, is hinged to the head of a piston rod 25 (at 15). A second lever 16 is articulated in the pliers housing at 17 and also at 15 on the head of the piston rod.

The piston rod is guided with one in the handle 1 piston 19 acted upon by pressure medium (pressure medium inlet 22, pressure chamber 21) is movable. Is in hand furthermore a return spring 18 is arranged; namely a compression spring that moves the piston to its lower position where it then spreads jaws 2 and 3.

For the movable piston 3 there is a return spring 9 on the tong housing or a bore 8 in the jaw arranged. This spring pushes the jaws apart. In the guide 6 is at the bottom an oarlock 12 is provided which, in the upper position (riveting position), the head of the piston rod 15 records.

A cover is designated by 10 in FIG.

mn

Finally, FIG. 2 shows, in a side view, the cutout in the jaw body 2, which the lever mechanism 13-17.

Claims (6)

Meissner & Meissner PATENT AGENCY OFFICE 8 PATENTANWÄLTE DIPL-ING. W. MEISSNER (1980) DIPL-ING. P. E. MEISSNER DIPL-ING. H.-J. PRESTING ZugalMMn »representative before Europlbehen Pttentamt -ProfeMlonil Representatives befor · the EuropMn Patent Offlct Your sign «ir letter τοτη Our sign HERBERTSTR. 22, 1000 BERLIN 33 M / Go. 22 281 Mannesmann AG
Mannesmannufer 2 Düsseldorf 1 Pressure medium operated rivet pliers Claims; Pressure medium-operated riveting pliers with two jaws which are arranged as an extension of the pliers handle and are movable relative to one another, at the free ends of which the riveting die counter-holder on the one hand and the riveting die on the other hand are arranged, characterized in that the jaw (2) having the riveting die counter-holder (4) is fixed and the riveting die ( 5) having jaw (3) _que r to * axis of the handle (1 is arranged to be movable in a straight line. TELEX: TELEGRAM: PHONE: BANK ACCOUNT: ΚΛI BuHECXXONTO: 1-BW44 INVENTION FAX BERLINER BANK AQ. P. MESSNER BLN-W ^ (nvend BERLIN 030/89160 37 BERLIN 31 404737-103 030/89130 26 3695716000 2. Pressure medium-operated rivet pliers according to claim 1, characterized in that for moving the jaw (3) a lever arrangement is provided, which consists of one acting on the movable jaw (3) ~ and the first articulated on a piston rod (25) Lever (14) as well as a type of pliers housing and a second lever (16) articulated on the piston rod (25) and that the movable jaw (3) is displaceable on a fixed guide surface (6,7) is. 3. Pressure medium operated rivet pliers according to the claims 1 and 2, characterized in that the piston rod (25) is acted upon by one of the pressure medium Piston (19) is connected, which is guided in the handle (1) of the pliers and which is controlled by a return spring (18) can be pressed into its lower position, which spreads the jaws (2,3). 4. Pressure medium operated rivet pliers according to claims 1 to 3, characterized in that in the pliers housing a return spring (9) acting on the movable jaw (3) is provided. 5. Pressure medium operated rivet pliers according to claims 1 to 4, characterized in that on the underside the guide surface (7) the head of the piston rod (25) in the upper end position (rivet position) receiving oarlock (12) is provided. 6. Pressure medium operated rivet pliers according to the claims 1 to 5, characterized in that the movable «jaw (3) in a cutout of the stationary Jaw (2) is slidably guided.