DE1136969B - Metal extrusion press with a die carrier arranged to be movable across its counter-holder - Google Patents

Description

The invention relates to an extrusion press for metals, in particular for ferrous metals its counterholder transversely arranged die carrier and between this and the lifted Retractable device for separating the pressed residue from the strand.

At the end of the press path, a press residue remains in the transducer between the press disk and the die. A known proposal is used to separate this residue from the extruded strand the transducer is withdrawn, with the residue sitting in it being a piece of the squeezed out Pulls strand back through the die. A saw cuts the strand between the receiver and the die carrier away. The pickup is then moved back, with the strand stump remaining on the press residue ejects the strand through the die so that it is free. Then the press residue removed by either moving the pickup against the fixed ram that ejects the residue as it passes through the receiver; or the transducer, if the The force generated by the transducer movement is not sufficient for this, supported by an intermediate piece and then the residue is ejected by a punch movement.

It is true that the transverse movements of the die carrier for the treatment, the change of dies etc. are in themselves executed quickly; however, the transverse movements of the die carrier as well as the cleaning of the transducer and, if pipes are pressed, the external cooling of the Domes only possible when the cut residue has been ejected. This requires repeated The pick-up takes a considerable amount of time. The introduction of a lubrication template and that Loading with a new press block can also only be done in subsequent stages of the work cycle going on.

In addition, at the end facing the die, the pick-up bushing is in that of the press residue including the press disk filled area subjected to increased wear. It is on known to divide the pick-up sleeve into individual rings, which according to the unequal Wear are interchangeable by themselves. However, it seems difficult to achieve a perfect fit and cohesion this replacing a one-piece sleeve and accordingly insertable into the transducer in a durable manner Rings with the occurring temperature changes and the requirement of interchangeability unite, so that this proposal is not used in modern presses.

Metal extruder

with a die carrier arranged to be transversely movable on its counter holder

Applicant:

Compagnie du Filage des Metaux et des Joints Curty - CEFJLAC -, Paris

Representative: Dr. G. W. Lotterhos

and Dr.-Ing. H. W. Lotterhos, patent attorneys,

Frankfurt / M., Lichtensteinstr. 3

Claimed priority: France of December 3, 1957 (No. 753 005)

Jean Delcroix, L'Isle Adam, Seine-et-Oise, Rene Hubert, Boulogne-sur-Seine,

and Rene Heintz, Berlaimont, Nord (France), have been named as inventors

There is also a die carrier rotatably movable on the counter holder of the press known, on the other hand the die holder (s) and die are axially displaceable, for sawing off the residue behind the die holder this initially follows the lifting movement of the transducer and through its return movement to the die carrier releases the strand stump from the die. The ejection of the press residue is immediately afterwards and without repeated moving back and forth of the transducer possible. Also, a relatively thin pressing residue is essentially of a recess of the Die holder received and is after its return to the die carrier largely of the transducer bore free. It is here of a considerable sticking of the pressed residue in the Pick-up hole through the clamping of the press burr between pick-up hole and press disk Made use of a corresponding wear of the transducer bore in its end area makes inevitable, and must also by a relative movement of the ram with respect to the Sensor that extends further than that during the pressing process, the residue only comes out of the sensor

209 658/156

3 4

be ejected before it is cleaned and loaded and the pickup 2 is withdrawn (cf.

can be sent. Arrows), after which the transducer 2 is cleaned immediately

The invention provides a way that it and the mandrel (not shown) can be cooled at the same time allows the operating time between the actual can, while the transducer insert 6 initially

Lent pressing processes to be shortened even further than 5 still remains in its working position. On that the pick-up insert 6 is also removed from the die for the difficult and costly book

to remove the wear and tear, to enable the saw 8 to be retracted for

to limit multiple measures. to enable separation of the strand 11. Then

According to the invention, the one on the matrix is again the pick-up insert 6 according to FIG. 1e

holder adjoining end part of the transducer in io brought up to the die holder to the

a length equal to the common thickness of press strand 11 to be ejected. This is done using the

disk and press residue corresponds, with a detachable strand stub that remains on the press residue 10.

Provided insert that is attached to the die carrier For cutting off light profiles (Fig. 1 f)

and can be lifted off to a limited extent from the die carrier. the die 3 remains with the die holder 3 '

With a device according to the invention, it is possible for the pick-up insert 6 to be considerably connected to the extrusion while it is being lifted off. The strand is then - in Preßrichkaben, since a number of operations, as seen device - separated behind the die 3 and the separation of the strand, the ejection of the free. Then the pick-up residue, the cleaning of the pick-up and the insert are moved back to the die carrier; he be-cooling of the dome, to be executed at the same time 20 is then found in the same position as after can. Thanks to the process according to FIG. 1 e.
the invention simple and easy in the pick-up The press residue 10 will be introduced from the die by insert before the latter has been returned to the press-retracting the pick-up insert lifted axis. Furthermore, there is no need (FIG. 1g) and then special precautions for different 25 are ejected from the sensor insert by means of a special plunger. After the forward travel of the press ram has been limited for lifting the press residue from the die, the press residue can replace the pressing process on the one hand and the ejection of the die holder by a spacer 17 on the other hand. (Fig. 3). The die carrier is after the

Advantageously, the sensor insert consists of two cutting and removal of the strand moved transversely,

30 After the test and, if necessary, the

The pick-up insert 6

device can be moved apart. set against the die holder 3 'and into the

The following are various embodiments - the interior of the insert to be pressed

In a metal extruder according to the invention, metal corresponding lubricant is introduced,

described on the basis of the drawing. In the drawings 35 Mft be ^dei n insertion of the slide 7

Fig. La to lh a section through the press-the tools (die and pick-up insert)

witness in different stages of a work cycle, returned to the press axis (Fig. 1h). To

Fig. 2 and 3 an axial section through the pressing the placement of the pickup 2 on the pickup

tools on a larger scale in two positions, multiple insert 6 then the press can be used again.

4 and 5 an embodiment with one-piece 40 ready.

Pick-up insert, in a front view of the matrices- Fig. 2 and 3 show the counter holder 1, the carrier and in section along the line VV of Fig. 4, different pressure pieces 12 a, 12 b, 12 c as counter-

6 and 7 show another embodiment with a bearing for the die holder 3 'and the die 3,

two-part pick-up insert in a front view of the pick-up insert 6, the pick-up 2 and the

Die carrier and in the section along the line 45 transversely movable die carrier 7. During the

VII-VII of Fig. 6. Displacement of the pickup insert 6 is the

This press has a counterholder 1, an upright alignment of pick-up insert 6 and matrix receiver 2, a matrix 3 with a matrix holder 3 ', a carrier 7 with a press ram 4 known by any device with the press disk 5, an upright maintained. Between the die carrier 7 receiver insert 6, a die carrier 7 and as 50 and the receiver insert 6 there is a separating device a saw 8. 9 is the press block shield piece 16 with a pocket that holds the die and 10 the press residue. holder 3 '. The shield piece 16 is with the

Fig. 1 a shows the loading, including the press die carrier 7 firmly connected. After the cross block 9 has been moved towards the press in a known manner, the die carrier can be carried out and pushed 55 into the receptacle 2, and the press remaining in the receptacle insert can be pushed. The end of the loading is shown in Fig. 1 b to the remainder 10 by means of a plunger z. B. in the Pressrich view. The press block 9 is now in the upright position (arrow) or, after removal, take-up 2, and pressing can begin. After the die holder 3 ', with the help of a pressing process shown in FIG. 3 (FIG. 1c), the front flange spacer 17, indicated by dashed lines, pushes against the surface of the punch 4 against the rear boundary 60 of the pressing direction by retracting the receptacle 2. For ejection of the pressing residue mereinsatzes 6 against the pressing residue on the dies, it is not necessary to use a special spacer that supports the
4 and 5 is again the counter-holder 1, the common thickness of the press residue and the press block 12, the die holder 3 'with the disk, and the punch can also be used as a die 3 , the transducer insert 6 and the Matrizenher be shorter by the corresponding amount. Shown for carrier 7. Furthermore, the pistons 13 of a severing of the extruded strand (FIG. 1 d) are a displacement drive for the pick-up insert 6.

piece 16 with the pocket for the die holder 3 'and a support plate T ₁ for the transducer insert 6, the drive device 20 for the transverse displacement of the die support 7, an ejector 21 for the residue and a lifter 22 for the die holder 3' can be seen. During the pressing, the pick-up 2 rests against the insert 6. After pressing, when the residue is inside the insert and the receiver has been lifted off, the receiver insert with the support plate T _{1 is} lifted from the die holder 3 'by the piston 13 from the die carrier.

The die holder 3 'can consist of one or two pieces. The assembly formed from the holding elements 7, I _x and 16 can also be swiveled out.

The modified embodiment according to FIGS. 6 and 7 shows a sensor insert consisting of two parts 6 '. The parts 6 'are joined together in a diametrical plane. Here, too, the counter holder 1, the sliding guide 19, the pressure piece 12 and the die holder 3 'with the die 3 can be seen. The transversely movable die carrier consists of parts 7 'and 7 ". Plate-shaped springs or other elastic elements can be provided in order to limit the lateral play of the pick-up insert through its support plate halves I ₁ , 7 ₂ " running in guides 25. Two plungers 26 spread apart the two die carrier parts T, 7 ", for which the drive device 20 is also provided. The die holder is brought into place by means of a device 27. This device 27 is arranged above a collecting slide 28 for the die holder 3 '. Furthermore, a recess 29 is provided in the die carrier for ejecting blocked press blocks, and the guide plate halves for the die holder are denoted by 16 '.

Claims (2)

PATENT CLAIMS: 1. Metal extrusion press with a die carrier arranged transversely on its counter holder and a device retractable between this and the lifted pick-up for separating the press residue from the strand, characterized in that the end part of the pick-up (2) adjoining the die holder (3 ') is of a length which corresponds to the common thickness of the press disk (5) and press residue (10), is provided with a detachable insert (6) which is attached to the die support (7) and can be lifted off the die support to a limited extent. 2. Press according to claim 1, characterized in that the insert (6 ') in one plane is divided by the axis and the parts can be moved apart by means of a displacement device are. Considered publications:
German Patent Nos. 516 869, 552 529;
British Patent No. 781,737;
French patents No. 1 035 190,
063 030, 1 063 043, 1146 985. For this purpose 2 sheets of drawings © 209 6S8 / 156 9.