DE1452331A1 - Device for extrusion of metals by means of hydraulic equipment - Google Patents

Description

36 Wakihamacho 1-ohome, ffukiai-ku, Kobe, Japan

Yorriohtung sum extrusion of metals by means of. hydraulic connection

Priority »Japan from July 9, 1962 and

November 22, 1962

Jüe invention relates to devices for hydraulic extrusion of conventional or special steel »Places or other metals and particularly affects one Improvement in the arrangement of the various parts involved in the extrusion of these metals by means of a hydraulic pressure are required.

The term "metal extrusion" in the following description and claims is intended to mean a process leseiohnen, in which a cylindrical container with a Btrangaupressenden metal plate or a metal billet fcwshlickt, whereupon a pressure is applied to the rear end »Means of a hydraulically operated tappet, piston or

909813 / 0HS

The same is done in such a way that the metal plate is pressed through a mold or die attached to the front end of the cylinder, so that tubes or rods are produced. In the hydraulic extrusion of metals, it is necessary to control a number of operations, namely the loading of the container with the blank, the setting of the die, which has been properly prepared beforehand and, if necessary, heated, the extrusion of the metal "This control operation is determinative of a pressing operation by means of a hydraulic pressure, the Auastossen of the extruded material, the cleaning of the inner walls of the container, separating and sohliesslich removing the excess material and the pressing time, that is _e, the length of time in which a Plate is extruded into a profile. In order to improve the efficiency of the extrusion, it is necessary to keep the pressing process as short as possible so that the number of extruded parts ejected per minute can be increased of an expensive special steel, e.g. stainless steel, is barely justifiable, it should no longer be profitable enough to extrude less expensive, normal types of steel.This is obviously because the pressing process is so tedious that it

909913/074 5

H52331

it is occasionally impossible to produce a sufficient number of pressed parts per minute "

If the above-mentioned number τοη work steps, the If extrusion is required, one after the other and not next to one another, the duration of the pressing process is equal to the sum of the details required for the individual work steps · It is easy to see that this significantly shortens the pressing time It can be said that a parallel system is used in which the operations are carried out in two or more different places compared to the case in which the Processes run one after the other · Since it has been customary up to now, the loading, the pressing, the setting of the To carry out the mold or die, the removal of press residues, the cleaning of the inner walls of the container and other operations on the center line or axis of the press, i.e. in the direction of the axis of the press, these works had to be carried out one after the other This one after the other resulted in a significant increase in the pressing time

Although a large number of suggestions have already been made so far were made via the strand price method, the concerned Most of these suggestions made certain improvements to the Preesen Mechanism per se or also basic extrusion possibilities · In contrast, so far only a few studies have been carried out on the arrangement of the individual devices • Ό9813 / 0746

H52331

_ 4 -

carried out under the point of view outlined above been. If an extruder is used that has only one container, it is inevitable that the « Loading, ejecting, setting the shape, there Removal of the press residues and cleaning of the inner walls of the container is carried out solely with regard to the one container. But this has the consequence that all of these operations must be carried out one after the other, so that the total pressing time is considerable is extended. On the other hand, if two or more containers are used, the above-mentioned operations run side by side, so that when the containers are appropriately "rotated" or according to a specific Scheme can be used alternately, the pressing time can not only be significantly reduced, but each work step can also be carried out with more care, with longer times then available if desired stand·

The main object of the invention is a device for extrusion of metals, which has two or more containers is provided for the blanks and is able to carry out the required operations in parallel and not one after the other, which can reduce the pressing time to a considerable extent.

809813/0745

U52331

Another object of the invention is to provide an apparatus for extrusion in which a Holder for two or more containers is provided, which is adjustable in its position and brings the container one after the other into the working position, so that in each Working position at this moment a certain operation can be carried out on one of these containers can · I

Another object of the invention is a device sum Extrusion of metal, involving the various fixtures and fittings that are used in extrusion can perform required operations in one predetermined position with regard to the position of the individual containers are arranged, these operations the Loading the containers with the blanks, setting the dies on the outlet side of the containers, the Loosening or fastening of the dies on the containers, the pressing out of the metal by means of a hydraulic system through the Dies, separating the extruded part, removing residues left in the containers and cleaning the inner walls of the containers after each pressing process, so that each of these operations can be carried out in one of the positions in which the containers come to rest, each such device fulfilling its particular task on the container,

909813/0745

H52331

who has reached the relevant position

According to the aims of the invention, an apparatus for the hydraulic extrusion of metals has been developed, the characteristics of which are explained in the following description with reference to the attached drawing In other words, the invention relates to a press for the hydraulic extrusion of metal, which has a container rhalter having a plurality of containers receives and is adjustable in its position, and which continues to have a hydraulic device with a plunger for ejecting of the metal, means for attaching or detaching each container, means for separating the extruded part, a die changing device, which is provided in one of the rest positions of the container is, and also a device for loading another container with a board, a device for Removal of press residues from the first-mentioned container after extrusion, and finally a device has, with which the inner walls of the mentioned container are cleaned after extrusion, wherein this facility is located at a different location »

When a metal part according to the invention is hydraulically extruded certain operations, namely pressing out the metal, setting up the die, the

909813 / Q74S

U52331 - 7 -

Separating the extrusion performed in a certain rest position of the container while at the same time In another rest position of the container, further work steps can be carried out, such as loading a container, removing the pressing residues and cleaning the inner walls of the container. The result of this process is a drastically reduced pressing time is a significant increase in the number of extrusions ejected per hour, so that such Establishment is still profitable even when extruding normal grades of steel. Because also cleaning the inside of the container and the removal of the pressing residues is carried out at a different location than where the extrusion takes place, this can be carried out with special care during a long period of time will. Regarding the nipping of the container with In the case of a blank, it should be noted that it is unnecessary, in contrast to the previous one, because this is also carried out at a point other than the extrusion itself The practice of providing a certain amount of free space for loading between the ram and the container, which in turn reduces the overall duration of the pressing process. The loading of the container at a point where the extrusion itself is not done is also from Preferable from the point of view of security. After every press

909013/0745

H52331 - θ -

The press residue is transferred to another process Location al * removed at that of extrusion. In contrast to the previous practice, in which the KUokstands were pressed out of the stamp, Xs is no longer required the stroke of the punch when squeezing the tee Change the metal and when discharging the residues Furthermore, the inner walls of the container can be cleaned more easily and more carefully.

The finding is generally the following under Besugnahae on the Reference Ib is explained in detail.

fig. 1 shows a plan view of a section through a Device for extrusion of metals according to the IrfinAung ·

Fig. 2 is a section along the line U-II of fig. Tig. 3 iat a section along the line IH-III of the Tig. FIG. 4 shows a section along the line IV-IV in FIG. 5 a section along the line V-V in FIG. 1.

Fig. 6 shows as an example a program for the extrusion of metals with the inventive Recognize facility

H52331

fig · 7 is βία time sequence diagram according to the prognosis the »if. 6th

FIG. 8 shows a section, a top view, of the device for extrusion in another embodiment.

Pig 9 is a son of the line U-IX of fig. 8th. fig. 10 shows a sonity near the line X-X of Fig. 8, fig.11 is a section along the line XI-XI of the? ig. 8th.

fig · 12 has a program for the extrusion press as an example according to the fig. 8 to 11 recognize.

flg.13 is a time sequence diagram according to the program the fig. 12th

The presses shown in the drawing aind horizontal presses boo extrusion presses of steel, which are old Two containers are provided.

In FIG. 1, with the reference numbers 1, there is a cylinder rack designated, in which a master cylinder 2 is arranged along the center line C-O 4er Pres ··, in which a retaining piston

809013/074 5

3 borders. A pressure chamber 4 is formed behind the piston 3. When a pressure medium is pressed into the chamber 4-, the piston 3 moves to the left, in the area of the main piston 3, a plunger 6 is attached by means of a coupling 5. If hollow parts are to be produced, the plunger 6 is also hollow, with a mandrel 7 fits into its bore. On the mandrel 7 is a piston 9 is fixed, which is in a hydraulic cylinder 8 is and is driven independently of the ram 6 by a hydraulic pressure. On the center line of the ram 6, i.e. on the idle center line of the press 0-C is in front of the Plunger 6 a container for the board. In the embodiment shown, there are two parallel to each other Containers 10a and 10b are provided which are each movably housed within a cylindrical opening 12 · Bin Holder 11 for the container is along the center line mounted on a shaft 13 which is rotatably seated in a bearing. On the shaft 13 is a certain point Gear 15 rigidly attached, which is in a rack 16 intervenes. Furthermore, as can be seen from FIG. 2, hydraulic cylinders 60 are attached to the holder 11 in such a way that the Containers 10a and 10b can be moved in the cylindrical openings 12 of the holder

On a die holder frame 19 are two die holders 18a and 18b attached, wob ·! the Rahmva 19 in its center

809013/0745

U52331

mounted on a rotatable shaft on which a gear 22 is seated that engages a toothed rack 21. These The rack is in a track 23 provided on the end face stored·

The center line between the two containers 10a and 10b corresponds to the distance between the center line CO of the press and the center line O ₁ -C _{1 of} a work site at which the door-preparing work is carried out, the two center lines being parallel to each other and the shaft 13 of the holder 11 is arranged straight in the middle swisohen the two center lines. The frame 19 for the die holder is arranged in such a way that one die holder each lies in one direction with the center line CC of the press

As in Yig. 3 «u can be seen, both ends of the racks 16 and 21 are designed as pistons 24 and 25, respectively, which run in pressure cylinder η 26 and 27. When there is a shift the pistons 27 and 26 in the cylinders are also moved the racks 16 and 21, whereby they the track wheels 15 and 22 rotate and thereby the holder 11 for the container and the Set the frame 19 for the die holder in rotation · For fastening the containers 10a and 10b, i.e. for pulling them together against the front side frame 23 is over the front Part of the main piston 3 is a fastening cylinder 28

900013/0745

pushed. As can be seen in FIG. 5, ribs 29 grip which on the outer circumference of the piston 3 in the longitudinal direction are arranged, in corresponding grooves in the inner wall of the cylinder 28, so that this is freely forward and can move behind. The end of the cylinder 28 forms a seat 31 »which on the end face of the container 10a and 10b is applied. To move the cylinder 28, a piston rod 32 is provided, which with pistons 33 and 34 which run in hydraulic cylinders 35 and 36 which are seated on the frame 1. If one of these cylinders is now is supplied with a pressure medium, the piston rod 32 shifted and thereby moves the cylinder 28 forwards or backwards. As can be seen in FIG. 5, two are running lower lugs of the cylinder 28 on guides 38 of the machine bed 37, ao that the cylinder is moving to be led. To absorb the pressing pressure, an end frame 23 is provided in front of the holder 11, on which an attachment 39 is attached (Fig.1), which was in the center line G-C of the press. The frame 19 for the die holder lies between this approach and the containers 10a and 10b. To ensure that the holder 11 for the Holds container in place, locking arms 40 are provided on both sides of the holder 11, which essentially are arranged under the holder (Fig. 4). These arms 40 are rotatably mounted on shafts 42 so that they can be freely pivoted relative to a frame 41,

909813/0745

U52331

wherein the pivotal movement is effected via attached to the arms of piston rods 44 which enclose · Ansohläge attached to the holder 11 in the hydraulic cylinder 45 45 'hold the retainer 11 firmly in position as soon as they come with the locking arms 40 in contact ₀ When the Holder 11 is to be rotated, the arms 40 are pivoted upwards so that they come free from the stops 45

A loading device is provided along the center line C ₁ -C _{1 of} the preparation section, which at the same time serves to eject the press residues and to clean the inner walls of the containers. A hydraulic cylinder 30 is therefore provided along the center line C ₁ -C ₁ , in which a piston 46 engages, which carries a movable table 47 at its end. A rod 49 is rigidly attached to this table 47, which at its front end carries a metal slide 48 and a rotatable sleeve 50, which is fitted with brushes 50 * on its outer surface and grips over the rod 49. The rotatable sleeve 50 is driven by a motor 51 attached to the table via a suitable reduction gear, so that the sleeve is only set in rotation when it is necessary. The metal slide 48 is arranged so that, in its retracted position, it is not too far from the containers 10a and 10b. Furthermore, piston rods 57, which are inserted into hydraulic cylinders 56, are attached to the movable table 47

909813/0745

surround, which serve to retract the rod 49 _e

In addition, along the center line 0 ^ -0 ^ of the preparation section, a loading device 52 is provided in front of the container and, in turn, a hydraulic cylinder 53 is provided in front of the loading device 52, which contains a piston 55 which carries a metal slide 54 at its end 54 in the retracted position from the container 10a or 10b is slightly larger than the length of a blank between the container 10a or 10b and the holder 18a for the die is a rotating cutting disc 62 that can be moved by a hydraulic cylinder (Fig. 2 and 3).

Let us now describe an extrusion process follow with the press described, »It is assumed that that all the preparatory work that must precede the extrusion has already been carried out o Then, first of all, the main piston 3 is moved forward along the center line G-C of the press, as shown in FIG. 7a moved into the container 10a, pressing against the circuit board Ba in this container. The extrusion process begins so that (see FIG. 6-1) the board is pressed out of the end of the container 10a through the die Da "The die Da is inserted into the holder 18a, which lies on the center line of the press" In a hollow

90Ö813 / U74S

U52331

The mandrel 7 fits into the cavity of the blank to be pressed Board in. When the larger part of the board is pressed out has been, the following operations run parallel to each other «

In the first step, as shown in Fig. 7b, the plunger 6 and the born 7 withdrawn, both of them operated by a hydraulic system (see Fig. 6-II). If, for example - as shown in Fig. 2 - one with the main piston 3 connected piston rod 58 interacts with a seated on the frame 1 cylinder 59 and this When pressure medium is supplied, the main piston 3 is withdrawn together with the piston rod 58.

In the second step, the container 10a, which is the Extrusion process was used, removed from its place (see. Fig. 6-III), namely the hydraulic cylinders56 and 60 is supplied with a pressure medium so that both the mounting cylinder 28 and the container 10a can be withdrawn relative to the holder 11. If now the Container 10a is moved back as shown in Fig. 7b also the pressing residue R, which remains in the container, is withdrawn with it, since it adheres to the inner wall of the container adheres so that the die Da is separated from its holder 18a. This creates a gap according to FIG. 7b between the die holder 18a and the front end of the

9 0 S 6 1 3 / in the 5th

U52331

Container 10a. Then, the rotating cutting disc is inserted into the gap 62 and separates the extrusion E, E pressing residue just beyond the die (cf. _e Figo 6-IV). The separated extruded profile E is then guided further forward to a conveyor, while the press residue R and the die remain inside the container 10a.

On the other hand, the withdrawn ram 6 and the mandrel 7 are cooled before the next extrusion process begins (see Fig. 6-V).

When the cutting disk 62 is withdrawn after being cut off, the locking arm 40 is released at the same time (see FIG. 6-VI). Then the hydraulic cylinder 26 (Figure 3) is fed to a printing medium, so that the gear 15 is driven which the holder 11 rotates (see. Fig. 6-VIII), so that the container 10a and be interchanged 10b ₀ At the same time also a pressure medium is supplied to the hydraulic cylinder 27 (FIG. 3), whereby the gear 22 is set in rotation, which rotates the frame 19 for the die holder, so that the holders 18a and 18b are exchanged (see. Fig. 6-VIII). At this moment the inner walls of the container 10b, which was previously on the center line C ₁ -C _{1 of} the preparation section, are cleaned and, as can be seen in FIG. 7b, loaded with a new board Bb

909013/0745

while the new die Sb was being inserted into the die holder 18b. If now the container 10b and the die holder 18b duroh the rotation in your Position on the center line C-O of the press, a pressure medium is fed to the hydraulic cylinder 35, which moves the fastening cylinder 28 forward (see »Pig. 6-IX), what the container 10b itself auoh is pressed forward until it comes to the die holder 18b sur system. Then the holder 11 aittel »of the locking arms 40 locked in its predetermined position (see · Fig. 6-X). It can be seen that the fastening cylinder 28 moves along the ribs 29 on the main piston 3 in a straight forward direction until the Sits 31 at the front end of the cylinder, the container 10b is tightly opposite, being in alignment with the Center line C-C of the press is kept. Another extrusion process can now be carried out in the manner already described Run way (Pig. 7c).

lun are the preparatory operations, such as cleaning the container 10a used in the previous pressing operation, loading the container with a blank and setting up the die. Like in Pig. 7c, as soon as the previously used container 10a has been brought into alignment with the center line C ₁ -C ₁ , the pressure chamber is supplied with a pressure medium which

9Q9 813/0 7 U 5

U52331

the rod 49 pushes forward. As shown in Pig 7a, the rod extends into the container in the meantime removes the one attached to the front end of the rod Metal slide 48 removes the residues R by pushing them forward out of the container (cf., Fig. 6-XI). At the same time, the sleeve 50 begins to revolve, so that the brushes 50 * attached to the inside of the container 10a clean (Pig. 6-XII) «On the other hand will a new blank Bb is fed to the loading device 52 on the preparation line (Pig. 6-XIV) “During this The rod 49 together with the movable table 47 becomes time withdrawn again in that a pressure medium is supplied to the pressure cylinder 56 (Pig. 6-XIIl), while at the same time a pressure medium enters the pressure chamber 53, which pushes the piston 55 forward so that the on the loading device 52 lying board Bb by means of of the metal slide 54 is pushed into the container 10b (cf. Pig. 6-XV and Pig. 7b). When the If the metal slide 54 is moved backwards again, the loading device 52 is swiveled away (cf. Pig · 6-XVH).

When the die holder 18a used in the previous extrusion process has been used, is moved away from the center line C-C, a new die Db is inserted into the holder, to prepare it for the next pressing process (Pigo 7b).

909813/0745

U52331

A new pressing process then begins. When steel is extruded in the manner described, it can be used in any Minute about three blanks can be processed (Fig. 6)

In the above example a device was explained and shown in which two containers and two matrices be exchanged by an oscillating movement · It is of course also possible to use a device use, in which three such elements are replaced by a lateral shift.

8 to 13 in which such a device is shown is, the containers are inserted into cylindrical openings 71 which extend in the axial direction and parallel are arranged to each other on both sides of a holder in such a way that the containers move freely in the axial direction can you Fig. 8 and 10 show the location of the parts in which the containers 72a and 72b lie within a holder 70, an imaginary line extending from the center line one container can be pulled to that of the other container, intersecting the center line of the press. With this one For example, the holder 70 is held in a frame 73 in such a way that it is perpendicular to the lateral direction Center line of the press can move · As shown in Figures 9 and 10, the frame 73 is with side guides 74 and 74 'which are parallel to each other above and below

909013 / UVAii

H52331

are attached to the frame, with protrusions 75 and 75 '» which are provided at the top and bottom of the holder for the containers, reach into the guides so that the holder is held and guided in its lateral movement. To enable the lateral movement of the holder 70, are inside the holder 70 as shown in Fig. 10 above and below extending in the lateral direction Hydraulic cylinders 76a and 76b attached, which are opened in opposite directions. In these cylinders grasp hollow pistons 77a and 77b through the openings, the outer ends of which are each rigidly attached to the corresponding one Side wall 78 of the frame 73 are attached «The bores in the pistons 77a and 77b represent channels 79a and 79b, a pressure medium is introduced into the hydraulic cylinders 76a and 76b from the outside from a source (not shown) can be, whereby the holder 70 is moved in the corresponding direction. The stroke of the holder 70 is controlled so that when moving to the extreme right side of the container 72 on the left side on the The center line of the press comes to rest, while conversely, when the holder moves all the way to the left, the container 72b on the right side coincided with the midline C-C The stroke can be controlled by adjusting stop screws 80a and 80b which are inserted into the side walls the frame 73 are inserted. Approaches 81a and 81b, which are provided on the holder, lie against these stops

909813/0 745

opposite · To guide the holder 70, support or Tragame provided, which protrude above the holder on both sides and rest on support surfaces, which are formed on the frame 73. When the holder moves from one side to the other, the support arms 82 slide on the support surfaces 83 · As the support surfaces 83 are arranged obliquely in such a way that imaginary extensions of these surfaces intersect on the center line of the press, will sioh any thermal stresses, if such should occur in the direction of these surfaces, so that the center line of the container is always exactly with the Center line of the press coincides.

This form of execution is also the framework for the Die holder designed so that it has a lateral Movement executes · It lies again between a front frame 84 and the containers · As shown in Fig. 11, the frame 85 for the die holder is from in sideways direction of elongated shape and carries one of the die holders 86a and 86b on each side are inserted in these holders The frame 85 sits above and below in guides 87 and 87 'in the front frame, the arrangement being made so that the frame can move freely in transverse direction. This movement is over two racks 88 and 88 * initiated, which are provided at the bottom and top of the frame and in pinions 99 and 89 *

rt δ β 13/0 7 a 5

mounting. As shown in FIGS. 9 and 11, separate pinions 90 are mounted on the pinion shafts for the pinions 89 and 89 ', which mesh with the teeth of racks 91 and 91 which are provided with pistons 92 at both ends which enclose in hydraulic cylinders 93a and 93b. When a pressure medium is supplied to one of the pressure cylinder pairs 93a or 93b, the rack 91 is moved in the transverse direction and thereby drives the pinions 90 and 89, which in turn move the frame 85 transversely along the guides 87 · The stroke of the frame 85 is controlled so that when the frame moves to the far right end, the die holder 86b of the left side lies in one direction with the center line CC of the press, while when the frame moves to the The extreme left end of the die holder is aligned with the center line of the press d 72b, while the first center line C ₁ -O ₁ and the second center line C ₂ -O _{2 of} the preparation sections lie parallel to both sides of the center line CC of the press at a distance corresponding to the above-mentioned distance »

In this embodiment of the invention, there are both the holder 70 for the containers as well as the frame 85 for the die holder can be moved in the lateral direction,

90 9 813/0745

U52331

A total of two preparation sections with the center lines C ₁ -O ₁ and O ₂ -C ₂ are available, which can lie on both sides of the center line CC of the press, so that the holder and the frame can move in opposite directions, creating an additional preparation section opposite a route is created, as it was given in the first described embodiment with the swinging movement of the frame and the holder "

In the second embodiment, a ram 94 is provided on the center line CC of the face. Furthermore, in contrast to the first embodiment, two groups of tools, each with a shaft 95 with a rotating cylinder 96a or 96b and for cleaning the inner walls of the container, are provided for removing the pressing residues and cleaning the inner walls of the container Brushes 96a ¹ and 96b * provided by the fact that a group with shaft 95, sleeve 96a and brushes 96a ¹ _{is now provided on one center line C 1} -C _{1 of} the one preparatory streoke and another such group is provided on the center line Cp-C ₂ , it becomes possible to carry out the two operations, namely the removal of the pressing residues and the cleaning of the inner walls of the containers in two places.The same applies to the metal slides 97a and 97b, with which the containers are provided with circuit boards, as well as to the hydraulic cylinders 98a and 98b.

9 0 9 8 13/0745

It is also the same as in the previous embodiment a tappet 94- directly connected to a main piston 100, which is located in a master cylinder 99 and with a piston rod 102 of a hydraulic cylinder 101 for the return movement connected (Pig. 9). A mounting cylinder 104 which has a seat in which the containers 72a and 72b fit is connected to a piston rod 106 in such a way that the cylinder 104 moves forward and backward can move along guides 105, with a piston on the piston rod in hydraulic cylinders 108 and 109, βο that the fastening cylinder can be moved by the supply of a printing medium «A movable table 110, the the circumferential sleeves 96a and 96b with the brushes continue to be the same as in the previous embodiment directly to a piston 112 of a hydraulic cylinder 111 connected, the arrangement being such that a retraction of the table by a piston rod 114 a hydraulic cylinder 113 is effected. To the generation the axial movement of the holder 70 for the containers, the holder 70 is provided with hydraulic cylinders 115a and 115b, their piston rods 116a and 116b each with the containers are connected. A cutting disk 117, which is provided for cutting off the extruded profiles, is arranged in such a way that that, if necessary, they can be placed in the space between the container 72a and the die holder 85a on the center line C-C of the press can be moved in (Figs. 9 and 11).

9 0 9 8 1 3 / Ο 7 k b

In addition, two loading devices 118a and 118b are arranged on the center lines C ₁ -C ₁ and C ₂ -C _{2 of} the preparation streak between the metal slides 97a and 971 »and the containers 72a and 72b.

The extruder shown in Figures 8-11 is operated as the Pig. 13 can be found in «Pig. 13a shows that on the center line CC of the press the blank Ba in the container 72a is pressed out by means of the ram 94 through the die Da (cf. one of the preparatory stretches lies on the center line C ₁ -C ₁ , by cleaning the circumferential sleeve 96a (cf. Pig. 12-XII). Furthermore, in the meantime, a new die Sb is inserted into the holder 86b _{on the center line C 2} -G _{2 of the other preparation section.}

After the completion of an extrusion process, the main piston 100 and the plunger 94 are pushed through the piston rod 102 withdrawn (Figs. 12-11). At the same time the Fitting cylinder 104 for the container is withdrawn by the piston 107 (see FIG. 12-III) and the one on the Container 72a located on centerline C-C of the press is withdrawn by piston rod 115a so that, as shown in FIG Fig. 13b can be seen, a free space between the

$ 09813/0745

Container 72a and the die holder 86a is created. At this moment, ie, if the residue R in the container together with the template, since and the container is moved back, the blade is inserted into the gap 117, separating the extruded profile at the junction with the residue R (FIG _e 12-IV).

While these processes just explained take place on the center line CC of the press, the preparatory work described below is carried _{out on one center line C 1} -C _{1 of the one preparatory section.} When the inner walls of the container 72b have been cleaned (Fig. 13a and Fig. 12-XII), the circumferential sleeve 96a is withdrawn by means of the piston 112 together with the movable table 110 (Pig. 12-XIII) and it is simultaneously the loading device 118a activated so that a new board Bb is placed. Then the metal slide 97a is moved forward via the hydraulic cylinder 98a until the circuit board, as can be seen in 5 ¹ Ig ₀ 13b, is inserted into the container 72b (cf. Pig. 12-XV). When this process is completed, the loading device 118a and also the metal siphon 97a are withdrawn again (FIGS. 12-XVII and 12-XVI).

After the extruded profile E (Pig. 13b) has been cut off, the cutting disc is pulled back again while the

909813/074

U52331

early the holder 70 within the frame 7? is displaced in the transverse direction by means of the hydraulic cylinder 76b (Pig. 10) (Pig · 12-VII). On the other hand, when the piston 92 moves within the hydraulic cylinder 93a, the rack 91 and pinion 90 are actuated and rotate the pinion 891 so that the frame 85 for the die holder moves together with the rack 88 in the opposite direction as the holder 70 (Pig · 12-VIII) · The positions of the container and the die holder are thus derived from that of the Pig. 13b transferred to that of FIG. 13c. When the movement of the holder 70 is complete, the container 72b, which was previously on the centerline C ₁ -C ₁ , is on the center line CC of the face. The fastening cylinder 104 is now actuated, which (Pig. 12-IX) pushes this container close to the die holder 85b, in which a new die Db is located (Pig. 13d). At the same time, the circumferential sleeve 96b is moved into the already used container 72a, which now _{lies in a direction with the center line C 2} ~ Cp of the second preparation section in order to expel the press residue R (Fig. 12-XI), whereupon the inner walls of the container by means of the brushes are cleaned (Pig. 13d). Then, as before, on the first preparation section, a new blank is fed in by means of the loading device 118b, while a new die Db is inserted into the die holder 86a,

9 0 9 8 13 / Ü 7 4 p

K52331

which now also lies in one direction with the center line C ₁ -C _{1 of} the first preparation section

The mode of operation of the device according to the invention and the individual features should emerge clearly from the above description. The following are still feeling the effects of the invention are explained ₀

According to the invention it is now possible to shorten the pressing time considerably because the extrusion the squeezing is performed even at a different location than the preparatory work that run simultaneously _e This shows that per unit of time now discharged a much larger number of pressed parts can be, and that with the help of the invention it is now possible to process even less expensive metals, such as normal steel, still economically in the extrusion process Matrices are carried out at one or more points outside the center line of the press, so that each of these operations can be carried out more carefully than before, because a longer time is available for this. Because the containers can also be loaded with a blank outside the center line of the press, it is possible to

9 0 S 8 "I 3 7 (J 7 U £

and avoid the dangers that would otherwise arise, when loading in a limited space along the Center line of the press must be carried out. Furthermore, it is no longer necessary to have a free space to be provided between the container and the plunger for pressing out, so that the stroke of the main piston around this Finally, the amount can also be reduced if the press residues are also discharged outside of the Center line of the press and is made with a special metal saddle, it is no longer necessary, to use the plunger of the main piston for this, which in turn saves time. So it is enough if the stroke of the main piston is designed in such a way that it is only used for extrusion during the extrusion process sufficient · The setting up of the dies is also carried out easily and without danger, because two die holders are provided, which sit in a frame, the the holder holds the same for each pressing process.

$ 09 81 3 / in the S

Claims (1)

ssitttls shower 9 very sos »AiLfaabis« ^ ® ^ tlstiiea _{9 them} in is ₉ 'that the Böfeältay Maßhalnmsäm® ¹ is oiae with Jed® * »des * £ SittelliEii9n gsbyaeht wssrdag duroh ewei ®d®r more Matzlsenhalt ·? C 10a, ^ 3 S6a ₉ l>} ₉ di · lie directly in front of the container and sit in a frame (19 * 85) whose position can be changed in such a way that the die holders are brought one after the other in a direction along the center line of the extruder can, by means of a separating device (62-117) which can be effective in front of the containers on the center line of the press and which separates the 3trangpresteilo "by a hydraulic rod (6j94) movable forwards and backwards, which is arranged behind the containers is «through a fastening cylinder (281104) for the container» which is close to the container »through a preliminary installation which can be moved near the front and back and a metal slide valve (48) for the external parts S east SS 13/0 7 4 B ^BAt) the press residues from the container and brushes (50 *} 96V) eiua cleaning the inner walls of the container s on v / ei et and which lies on the center line or the center line of the supply line section or sections either gate or behind the containers _t as well as through a Device for loading the containers rait Fiatinen 2. Apparatus according to claim 1 »characterized that the holder (11) for the container is one in the longitudinal direction the extruder lying rotatable shaft (13) and nit a (Jetriebe (1-5 »16) is provided» nit that the cold swiveled around the axis of the wave can be· 3. Device according to claim 1 »characterized & marked» that the frame (19) for the fiatrijse η falter (18a »b) with one lying in the direction of the jtrangpresee »Rush (2o) and a gear (21» 22) is provided » with the ..atiuen around the axis of the., hurry swiveled become krmn 4 ·· apparatus of claim 1 _t wherein G ^ kenneeichnet "that the ioilter (70) for the lent older orichtunc on a normal j5ur County ^ ^ Utran the press liogenden guide go lu <ert lot and a hydraulic device ^{8 '3/0745} BAD ORIGINAL H52331 (76a, b) has "* $ ^ sr" * length a "r guides can be moved 5 device according to claim 1, characterized in that that the channel (85) for the die holder (66a, b) on a normal eur length direction of the extruder horizontal guide is stored and has a hydraulic device (93a) «with which it can be moved along the length of the guide * 6. Apparatus according to claim 1, characterized There is a rod (495 'which at its end to the end of the preserver stand with a metal saddle (48) is provided »with a hydraulic device (56) is connected and one is pushed over the rod *! The circumferential sleeve (50) has brushes on the outside (50 *) is coated «which are used to clean the inside of the container · 7 «Device according to claim 1, characterized» that the Wetallsohlebar (48) su * eject the food items from the containers and the devices (53,54) for loading the containers with blanks facing each other on both sides of the container are arranged. BATH ORIGINAL 8 ^ 09813/0 74 5 H52331 ~ 33 - 8 «Yowiohtung according to Anepruoh 7 # characterized by the fact that ·· dl · facility η» Seeohieken «in« n Hydraultbsyünder (53) above all in the »« tn »infaeeenden KoIImu (54) arise *. 9 «Apparatus NaOH claim 4» daduroh g "k" nmeiohnet _t that dtr holder (70) for the container with Traßaraen (82) Yereehen is "what aufllegen on Sttttsflachen (03)" dio at a Preeeenrahmen (73) auegebildet eind and Planes are »which go through the center line (CC) of the press · BADORiGiNAL