EP3145652B1 - Extruder having a block-feeding device - Google Patents

Description

The invention relates to an extruder according to the preamble of claim 1.

Such extrusions, in particular operated as a hydraulic extrusion press, with a pressing device for pressing a block into a semi-finished product and with a block feed device for loading the to be pressed, for. B. blocks coming from an oven into the extrusion press, where the block is then introduced by a block loader into a block pickup upstream of a forming die, are well known from the prior art, for example as linear loaders. Such linear loaders, however, are very complex in construction and, accordingly, they are often very costly in terms of their manufacture and / or maintenance. As a rule, block feed devices or linear loaders of the generic type comprise a belt drive for driving a loading carriage along a linear guide rail. However, these belt drives are relatively susceptible to wear, which means that maintenance work is required more frequently than desired. The maintenance work turns out to be extremely complex simply because of the dimensions, in particular with regard to height and weight, of such linear loaders. In addition, the belts of such a belt drive have an elastic dimension which can hardly be reliably calculated, so that, for example, an additional measuring unit, such as a measuring stick, is required to measure the length of a block to be loaded. The belt drive is used to protect against external impairments mostly still enclosed, which makes the accessibility of the belt drive even more difficult. In addition, a large number of special parts are required in the construction of known linear loaders, which are expensive to purchase, which further increases the production costs. In addition, the height of the conventional linear loader in particular obscures a good view of an extrusion press or its press window, which adversely affects operational safety. As a result of this, and in addition due to the construction of the linear loader, which is very close to the extrusion press, there is also an increased risk of collision between the loading carriage and components of the extrusion press. It has proven to be particularly disadvantageous that components of a linear guide extend as far as a die device or the like of the extrusion press, as a result of which access to a transfer area between the linear loader and extrusion press is obstructed or at least made more difficult.

The invention is based on the object of further developing block feed devices or linear loaders of the generic type in order to at least partially overcome the aforementioned disadvantages.

The object of the invention is achieved by a block feeding device comprising the features of claim 1. For the linear loading of a block to be compressed in an extrusion press, a frame comprising a linear guide device and a loading carriage are provided, which is arranged on the linear guide device so as to be linearly displaceable in the longitudinal direction of a linear guide track, the loading carriage comprising a driver part for holding the block to be loaded, and wherein the block feeding device by a multi-part loading carriage with at least one lower slide part that is linearly displaceable with respect to the linear guide device and additionally with an upper slide part that can be linearly displaced both with respect to the linear guide device and with respect to the lower slide part.

Due to the multi-part loading carriage consisting of the lower carriage part and at least the upper carriage part, a single functional component can be used additional path with respect to a delivery path for loading the block to be loaded can be generated in that the upper slide part can be extended from the lower slide part, or vice versa.

The present block feeding device thus has a loading carriage which can be extended in the longitudinal direction of the linear guide track and which has carriage parts which can be telescoped relative to one another, namely the lower carriage part and at least the upper carriage part. Thus, the present loading carriage within the meaning of the invention has a variable basic length, which can be increased if necessary in the longitudinal direction of the linear guide track in order to support the delivery of a block to be loaded.

As a result, the overall length of the present block feeding device and in particular the overall length of a linear guide device on which the loading carriage is movably mounted can be significantly shortened, which in turn enables good accessibility to a press window of an extrusion press or the like.

Due to the more compact design, the block feed device can also be produced more cost-effectively than before as a block push-on device. In this respect, the present block feed device is preferably designed as a block pusher.

The loading carriage is advantageously arranged above the linear guide device. This is possible because the block feeding device is particularly flat with a very low overall height. If necessary, the lower slide part can be placed below the linear guide device and the upper slide part above the linear guide device, so that the present block feed device can be built even lower.

In the present case, the block feeding device can comprise different linear guide devices, for example with one or more linear guide rail elements, on which, in particular, the lower part of the carriage of the loading carriage is guided in a translatory manner. In this respect, the linear guide device can comprise a plurality of linear guide rails or component elements that have the same effect.

For example, a dovetail connection or the like is used here between the linear guide device or linear guide rail and the lower slide part.

The linear guide device or linear guide rail preferably comprises a cross member which extends in the direction of the linear guide track.

The driver part can, for example, be designed directly by the upper slide part, or it is attached to it as an external component.

In the present case, due to the flatter block feed device, the driver part can be arranged above the loading carriage, so that it is much more accessible. A charging process can hereby be further simplified.

If the upper carriage part is mounted on the lower carriage part so as to be linearly displaceable in the longitudinal direction of the linear guide track, with a corresponding configuration of the loading carriage, an enlarged delivery path can be achieved with a conventional length of the block feed device, or a sufficiently long delivery path can be achieved with a shortened length of the block feed device. A corresponding mounting between the upper slide part and the lower slide part can be achieved structurally, for example by means of a dovetail guide or the like.

It is particularly useful if the upper carriage part is arranged on the lower carriage part in such a way that, when the block is loaded, the upper carriage part covers a further distance in relation to the linear guide device, preferably twice the distance in the direction of the linear guide path than the lower carriage part in relation to the linear guide device. Through this the billet feed device can be implemented on an extrusion press in a particularly space-saving manner.

If the lower slide part is designed to be longer than the upper slide part, a sufficiently stable and very secure guidance of the upper slide part can be guaranteed.

The block feeding device can be constructed in a structurally simple manner if a transmission gear is arranged between the upper carriage part and a drive unit of the loading carriage. For example, the upper carriage part can be moved relative to the lower carriage part and, for example, a linear guide rail by means of the drive unit of the loading carriage, while the lower carriage part is displaced relative to this linear guide rail.

Such a transmission gear can be constructed in a variety of ways. In particular, the upper slide part can be displaced by the same distance with respect to the lower slide part as the lower slide part especially with respect to the linear guide rail. However, other transmission ratios can also be selected if this is advantageous for an application.

A very simple and robust design variant provides that the upper slide part comprises a rack element which, by means of a gear rotatably arranged on the lower slide part, interacts with a further rack element arranged on the linear guide device connected is. This alone allows a transmission gear of particularly simple construction to be formulated.

It goes without saying that a plurality of rack elements and gears can be provided in each case in order to ensure a stable and precise charging process. In this way, in particular, the individual components can be made smaller, so that the present block feed device can be made even more compact or flatter.

In particular, with the aid of a correspondingly designed transmission gear, both the lower slide part and the upper slide part can be driven together.

The upper slide part and the lower slide part expediently have a common drive unit. As a result, the lower slide part and the upper slide part can be driven, for example, by a single electric motor of the drive unit.

It goes without saying that an electric motor of the drive unit can be operatively connected to the loading carriage of the block feeding device in order to drive at least the carriage lower part.

The loading carriage is preferably arranged above the drive unit, so that in particular the driver part is more freely accessible from above.

A preferred embodiment variant, however, provides that the block feed device comprises a drive unit for driving the loading carriage, which has a telescopic device for linearly displacing the loading carriage along the linear guide track. By means of the telescopic device, at least the disadvantages described at the beginning with regard to a belt drive can be avoided. In particular, a relevant enclosure can be dispensed with, because a telescopic device is less sensitive to external influences. In this way, easier access to components of the block feed device can be established. If necessary, a faster component change can also be achieved in this way.

A sufficient stroke can be generated by means of the present telescopic device in order to be able to guarantee a corresponding delivery path with respect to the loading carriage. In particular, in the interaction by means of the rotating gear wheel that is running along with it or that is arranged on the lower part of the carriage and the rack elements in engagement therewith, an advantageous lengthening of the path with respect to the driver part can be achieved, so that the stroke on the telescopic device can be halved with an appropriate configuration. As a result, the present block feed device can be produced even more cheaply.

For example, the telescopic device comprises a hydraulic cylinder in order to be able to generate a corresponding stroke with regard to the loading carriage or the carriage lower part.

A block feeding device of the generic type can advantageously be further developed simply by means of such a telescopic device, so that the features in this regard are advantageous even without the other features of the invention.

In this respect, the drive unit for driving the loading carriage can also comprise a hydraulic cylinder.

Furthermore, independently of the other features of the invention, it is also advantageous if the block feeding device comprises a drive unit for driving the loading carriage, which has a threaded spindle for linearly displacing the loading carriage along the linear guide track. By means of the threaded spindle, an operationally reliable connection in particular of the slide lower part to an electric motor of the drive unit is achieved in a structurally particularly simple manner.

In particular, by means of the threaded spindle, a rotational movement of an output shaft of the electric motor can be converted into a translational movement of the loading carriage or the carriage lower part on the linear guide device in a structurally simple manner.

It is particularly advantageous that, especially in connection with a threaded spindle, a drive motor or electric motor of significantly smaller dimensions can be used than is the case, for example, with regard to a drive unit comprising a belt drive. In this way, a further cost saving can be achieved in the manufacture of the present block feeding device.

An advantageous telescopic device can also be provided on the block feeding device by means of the threaded spindle.

Different spindle concepts can be used as the present threaded spindle. The threaded spindle is preferably a ball screw spindle, by means of which a lifting drive is implemented.

If the driver part is arranged on the loading carriage in such a way that, when the block is being loaded, the driver part can cover a further distance, preferably twice the distance, in the longitudinal direction of the linear guide track as a telescopic arm of a telescopic device for linearly displacing the loading carriage along the linear guide track the block feed device can be built particularly short in the direction of the linear guide track.

In particular, the linear guide rail can be made significantly shorter than previously usual, which has a positive effect on the production costs of the present block feed device.

In any case, the present linear billet feed device as a billet pushing device can be constructed in a structurally simpler manner and can be integrated into an extrusion press in a space-saving manner. As a result, the present block feeding device can be integrated more flexibly in processing plants.

In particular, the present block feeding device has a flatter structure, as a result of which assembly and maintenance close to the ground can be carried out more easily. This applies in particular to moving elements of the present block feeding device.

Advantageously, with the particularly flat billet feed device, good accessibility and a view of the extrusion press can be achieved.

In particular, in the case of a mirrored processing system, only one component on the present block feed device needs to be dismantled and replaced in order to assemble it ready for use.

The linear block feed device according to the invention can advantageously be used universally on processing systems of the most varied of construction due to its simpler construction. This means that existing processing systems or extrusion presses can also be retrofitted without any problems.

Furthermore, the proposed billet feed device can be designed, in particular, as a separate structural unit, which can easily be positioned in parallel next to an extrusion press. This eliminates the need to integrate the billet feed device within auxiliary equipment of the extrusion press, which has hitherto required increased assembly effort with regard to commissioning. This does not apply in the present case.

It is also advantageous that in the present case a higher number of standard components can be installed on the block feed device. Such standard components are much cheaper to obtain than custom-made ones were often needed up to now. This means that replacement parts can also be stored more economically. If necessary, stocks can be significantly reduced due to standard components that are easy to obtain. In this way, a further reduction in costs is achieved.

Further features, effects and advantages of the present invention are explained with reference to the attached drawing and the following description, in which a linear block feed device according to the invention with a multi-part loading carriage is shown and described by way of example.

Figur 1

schematisch eine Seitenansicht einer Blockzuführvorrichtung zum linearen Laden eines verpressenden Blocks mit einem mehrteiligen, zueinander verschieblich angeordnete Schlittenteile umfassenden Ladeschlitten, welcher in einer Startposition angeordnet ist;

Figur 2

schematisch eine Seitenansicht der in der Figur 1 gezeigten Blockzuführvorrichtung mit dem in einer Übergabeposition verlagerten mehrteiligen Ladeschlitten;

Figur 3

schematisch eine quergeschnittene Detailansicht einer alternativen Ausführungsvariante;

Figur 4

schematisch eine quergeschnittene Detailansicht einer anderen Ausführungsvariante;

Figur 5

schematisch quergeschnittene Detailansicht einer weiteren Ausführungsvariante; und

Figur 6

schematisch quergeschnittene Detailansicht einer zusätzlichen Ausführungsvariante.

In the drawing show:

Figure 1

schematically a side view of a block feeding device for the linear loading of a pressing block with a multi-part, mutually displaceably arranged carriage parts comprising loading carriage, which is arranged in a starting position;

Figure 2

schematically a side view of the in the Figure 1 Block feeding device shown with the multi-part loading carriage displaced in a transfer position;

Figure 3

schematically a cross-sectional detailed view of an alternative embodiment variant;

Figure 4

schematically a cross-sectioned detailed view of another embodiment variant;

Figure 5

a schematic cross-sectional detailed view of a further embodiment variant; and

Figure 6

schematic cross-sectional detailed view of an additional variant.

According to the Figures 1 and 2 The linear billet feed device 1 shown as an example for linear loading of a billet 3 to be pressed in a hydraulic extruder 2 is arranged on the head side axially in front of a billet stop 4 of the hydraulic extruder 2. The block feed device 1 has a frame 5 with standing elements 6 (only numbered as an example), by means of which the block feed device 1 is fastened to a base 7.

In addition, the block feed device 1 has a linear guide device 8 in the form of a linear guide rail 8A, which is carried by the frame 5. A loading carriage 9 is arranged on the linear guide rail 8A so as to be translationally movable in the axial direction.

The loading carriage 9 can thus be moved linearly along a linear guide track 11 embodied by the linear guide rail 8A in the axial direction or in the longitudinal direction 10 of the linear guide track 11 towards the block stop 4 of the hydraulic extrusion press 2, or correspondingly removed or moved away from it, whereby the loading carriage 9 as shown in FIG Figure 1 in a starting position 12 and as shown in FIG Figure 2 is in a transfer position 13.

In the starting position 12, the block feed device 1 is equipped with a new block 3 or a block 3 that is new in this regard is held on a driver part 14, the driver part 14 being carried by the loading carriage 9.

In the transfer position 13, the block 3 held on the driver part 14 is transferred to the hydraulic extrusion press 2. After the block 3 has been transferred, the driver part 14 is shifted backwards again into the starting position 12 with the aid of the loading carriage 9. In this respect, the block 3 to be loaded is arranged on the loading carriage 9 until a transfer has taken place.

In the present case, the loading carriage 9 is designed in several parts; namely according to the invention with a linearly displaceable relative to the linear guide rail 8A Lower carriage part 15 and additionally with an upper carriage part 16 that can be linearly displaced both with respect to the linear guide rail 8A and with respect to the lower carriage part 15.

As a result of this additional displaceability of the upper slide part 16 both relative to the lower slide part 15 and to the linear guide rail 8A in the axial direction along the linear guide track 11, the block can be shifted considerably further in the axial direction, even if the lower slide part 16 is already facing the block stop 4 Has reached the end of 17.

Here, the upper carriage part 16 is arranged on the lower carriage part 15 in such a way that when the block 3 is being loaded, i.e. when the loading carriage 9 is displaced from the starting position 12 in the direction of the transfer position 13, the upper carriage part 16 is displaced twice as far as that relative to the linear guide rail 8A Slide lower part 15 opposite the linear guide rail 8A.

As a result, the entire block feeding device 1 can be made shorter; that is, between the block stop 4 of the hydraulic extrusion press 2 and the block stop 4 facing end 17 of the billet feed device 1 or the linear guide rail 8A is a freely available working space 18 which, on the one hand, allows a particularly good view of the extrusion press 2 and which on the other hand, assembly and maintenance work is also facilitated.

Thus, despite a shortened construction of the block feed device 1, a sufficient or advantageously a further path 19 can still be made available.

To drive the loading carriage 9, a drive unit 20 is provided on the underside of the frame of the block feeding device 1, which, at least in this exemplary embodiment, consists of a telescopic device 22 driven by an electric motor 21 for linearly displacing the loading carriage 9 along the linear guide track 11 exists. This alone makes the block feed device 1 extremely flat.

In this exemplary embodiment, the telescopic device 22 is equipped with a threaded spindle 23, which comprises a telescopic device housing 24 as a threaded spindle nut and a telescopic device threaded rod 25 as a threaded spindle screw. The threaded spindle screw represents a telescopic arm that can be moved out of the telescopic device housing 24.

It goes without saying that instead of the threaded spindle 23, a cylinder device can also be provided as a telescopic device 22 in the sense of the invention.

The threaded spindle screw is fastened on the head side by means of a ball joint 26 to a fastening tab 27 of the lower slide part 15, so that a rotation of an output shaft, not shown here, of the electric motor 21 can be converted directly into a translational movement of the lower slide part 15.

In order to be able to drive not only the lower slide part 15 but also the upper slide part 16 in a structurally simple manner by means of the drive unit 20, the block feed device 1 also comprises a transmission gear 28, which in this exemplary embodiment is essentially provided by an arranged on the upper slide part 16 and thus opposite The rack element 29 displaceable in relation to the frame 5 is embodied by a further rack element 30 arranged in a stationary manner opposite the frame 5 and by a toothed wheel 31 which is rotatably fastened to the lower part of the carriage.

The further rack element 30 is here arranged on the linear guide rail 8A and thus in a stationary manner on the block feed device 1.

If the threaded spindle screw is now removed from the telescopic device housing by means of the threaded spindle nut driven in rotation by the electric motor 21 24 moved out, the slide lower part 15 shifts together with the gear 31 in the direction of the block stop 4.

Here, the gear 31 meshes on the one hand with the further rack element 30, which is fixed opposite the linear guide rail 8A, as a result of which the gear 31 is rotated about the axis of rotation 32. On the other hand, the gear wheel 31 is in engagement with the rack element 29 located on the upper carriage part 16, so that the upper carriage part 16 is thereby additionally displaced in the direction of the block stop 4 relative to the lower carriage part 15, whereby the movement of the lower carriage part 15 and the upper carriage part 16 add up .

Here, the driver part 14 is moved twice as far in the direction of the block stop 4 as the threaded spindle screw is moved out of the telescopic device housing 24, so that the block feed device 1 can be made correspondingly shorter, but can still provide at least the same feed path as conventional line loaders.

In any case, in the exemplary embodiment shown here, the driver part 14 is arranged on the loading carriage 9 in such a way that during a loading process of the block 3 with respect to the linear guide rail 8A it covers twice the distance 19 in the direction of the linear guide track 11 than the threaded spindle screw used here for linearly displacing the loading carriage 9.

In the following Figures 3 to 6 Still other exemplary embodiments of multi-part loading carriages 109, 309 and 409 are explained, which can be optionally provided on the frame 5 of the present block feed device 1 above the drive unit 20.

The one in the Figure 3 The alternative embodiment shown, the frame 5 comprises a U-shaped cross member 135, by means of which two likewise U-shaped linear guide rails 108A and 108B are held vertically in such a way that their long side openings 136 (only numbered as an example) one on top of the other are arranged assigningly. The further rack element 130 of the transmission gear 128 is placed centrally on the inner surface 137 of the web region 138 of the U-shaped cross member 135, a holding part 139 being provided between the further rack element 130 and the web region 138. The linear guide device 108 is designed by means of the two U-shaped linear guide rails 108A and 108B, by means of which the linear guide track 111 is formulated, along which the multi-part loading carriage 109 can be displaced in translation. The lower carriage part 115 of the multi-part loading carriage 109 comprises a hollow profile part 141 on which, in this exemplary embodiment, lateral roller bearing elements 142 and 143 (only numbered as an example) are mounted, which are each guided on the corresponding linear guide rail 108A and 108B. In this respect, the lower slide part 115 is mounted on the two U-shaped linear guide rails 108A and 108B by means of a roller bearing connection 144 and 145, respectively. In addition, a gear shaft 148, which is supported in two bearing points 146 and 147, is also supported on the hollow profile part 141 of the lower slide part 115. By means of the gear shaft 148, the gear 131 of the transmission gear 128 is mounted on the lower slide part 115 so as to be rotatable about the axis of rotation 132. The gear 131 meshes with the further rack element 130 on the one hand and with the rack element 129 attached to the underside 149 of the upper carriage part 116 on the other hand Direction of the linear guide track 111 extend. Between these elongated slot nut elements 151 and 152, the toothed rack element 129 is fastened to the slide upper part 116 with the aid of another holding part 153. The upper slide part 116 consists essentially of an elongated plate element 154, to which the driver part 14 is screwed on the upper side and two groove strip components 155 and 156 designed complementary to the elongated sliding block elements 151 and 152, each with a trapezoidal groove 157 (numbered only as an example), are screwed to it Direction of the linear guide track 111 slidable dovetail connections 158 or 159 between the lower slide part 115 and the upper slide part 116. If the lower slide part 116, as already described above, is moved by the drive unit 20 in the direction of the linear guide track 111, the gear 131, which is operatively connected to the further rack element 130, also rotates. This in turn meshes with the rack element 129 attached to the upper slide part 116, whereby the upper slide part 116 is advantageously additionally displaced in the direction of the linear guide track 111 with respect to the lower slide part 115.

That in the Figure 4 The other embodiment shown is almost completely identical to that in FIG Figure 3 shown embodiment, so that the reference numerals are retained with regard to the same components and only different components are provided with new reference numerals. The one in the Figure 4 The embodiment shown are instead of the roller bearing connections 144 and 145 (see Figure 3 ) form-fitting slide bearing connections 260 and 261 for guiding the carriage lower part 115 of the multi-part loading carriage 109. Here, the linear guide rails 208A and 208B arranged on the U-shaped cross member 135 are designed as slot stone rails 262 (numbered only by way of example), along which complementary slot rails 263 (numbered only by way of example) can slide. These groove rails 263 are attached laterally to the hollow profile part 141 of the slide lower part 115.

The form-fitting sliding bearing connections 260 and 261 are designed here in a structurally simple manner as dovetail guide connections. This means that each of these slot rails 263 has a slot 264 (only numbered as an example) provided with undercuts (not numbered), the respective slot stone rail 262 being designed in such a way that it can engage behind these undercuts. In this respect, this other exemplary embodiment is distinguished by a differently constructed linear guide device 208.

In addition, the description with regard to the dovetail connections or dovetail guide connections also applies to the other design variants, even if this is not explicitly explained there.

The one in the Figure 5 Another embodiment shown is provided with respect to the multi-part loading carriage 309 yet another linear guide device 308 embodying a linear guide track 311, in which the U-shaped cross member 135 (see FIG Figures 3 and 4th ) is exchanged for a flat, planar cross member 370, which is screwed to the frame 5. In this exemplary embodiment, two elongated linear guide rails 308A and 308B, on which displaceably mounted, complementarily designed groove rails 371 and 372 are mounted, are arranged on the flat, planar cross member 370. The groove rails 371 and 372 are attached to the carriage lower part 315. The lower slide part 315 again consists essentially of a hollow profile part 341 in which the gear wheel shaft 348 rotating about the axis of rotation 332 with the gear wheel 331 is mounted. Between the two elongated linear guide rails 308A and 308B, the further rack element 330 is again fixed on the flat planar cross member 370. Two further elongated linear guide rails 373 and 374 are arranged on the upper side of the lower slide part 315, which are slidably mounted in complementary groove rails 375 and 376, the two further groove rails 375 and 376 being arranged on the upper slide part 316. A linear guide unit 377 of simple construction is thus also provided between the upper slide part 316 and the lower slide part 315. The rack element 329 is arranged between the two further groove rails 375 and 376. The upper slide part 316 again consists essentially of an elongate plate element 354, to which the driver part 14 is screwed on the upper side and the groove rails 375 and 376 and the rack element 329 are screwed on the lower side. The gear wheel 331 meshes with both the rack element 329 and with the further rack element 330, so that by means of the provided in this regard Transmission gear 328, the effects already explained several times above can also be achieved in this further exemplary embodiment.

The one in the Figure 6 The additional embodiment shown is with regard to the multi-part loading carriage 409 between the flat planar cross member 470 and the carriage lower part 415 only a single elongated linear guide rail 408A and a corresponding groove rail 471 (linear guide device 408) and between this carriage lower part 415 and the carriage upper part 416 only a single elongated linear guide rail 473 and a corresponding groove rail 475 (linear guide unit 477) is present. The linear guide path 411 is also defined here by means of the linear guide device 408 and the linear guide unit 477. The upper slide part 416 again has an elongated plate element 454. In the case of the linear guide device 408, two rack elements 430A and 430B or 429A and 429B are provided both on the flat planar cross member 470 and on the upper carriage part 416. Correspondingly, two gears 431A and 431B are present on the gear shaft 448 mounted in the hollow profile part 441 of the carriage lower part 415, the first gear 431A meshing with the two rack elements 430A and 429A and the second gear 431B with the two rack elements 430B and 429B. Overall, the transmission gear 428 is embodied in this way. The gear wheel shaft 448 is mounted at a first bearing point 446 and a second bearing point 447 on the hollow profile part 441 and thus also on the carriage lower part 415. The desired effects within the meaning of the present invention can also be achieved with this arrangement.

It goes without saying that the exemplary embodiments explained above are only first configurations of the block feeding device according to the invention. In this respect, the configuration of the invention is not limited to these exemplary embodiments.

All features disclosed in the application documents are claimed as essential to the invention, provided that they are new to the state of the art, individually or in combination.

List of reference symbols:

1

Block feeder / linear loader / block pusher

2

hydraulic extrusion press

3

block

4th

Block stop

5

frame

6th

Stand element

7th

Underground

8th

Linear guide device

8A

Linear guide rail

9

Loading carriage

10

Longitudinal direction

11

Linear guideway

12th

Starting position

13th

Transfer position

14th

Driver part

15th

Carriage base

16

Slide top

17th

end

18th

working space

19th

further distance

20th

Drive unit

21

Electric motor

22nd

Telescopic device

23

Threaded spindle

24

Telescopic equipment housing

25th

Telescopic device threaded rod

26th

Ball joint

27

Fastening tab

28

Transmission gear

29

Rack element

30th

another rack element

31

gear

32

Axis of rotation

108

Linear guide device

108A

first linear guide rail

108B

second linear guide rail

109

Loading carriage

111

Linear guideway

115

Carriage base

116

Slide top

128

Transmission gear

129

Rack element

130

another rack element

131

gear

132

Axis of rotation

135

U-shaped truss element

136

Long side openings

137

Inner surface

138

Bridge area

139

Holding part

141

Hollow profile part

142

first lateral roller bearing element

143

second lateral roller bearing element

144

first roller bearing connection

145

second roller bearing connection

146

first depository

147

second depository

148

Gear shaft

149

bottom

150

page

151

first elongated slot nut element

152

second elongated slot nut element

153

other holding part

154

elongated plate element

155

first groove strip component

156

second groove strip component

157

trapezoidal groove

158

first sliding dovetail connection

159

second sliding dovetail connection

208

Linear guide device

208A

first linear guide rail

208B

second linear guide rail

260

first slide bearing connection

261

second plain bearing connection

262

Sliding block rails

263

Groove rails

264

Groove

308

Linear guide device

308A

first linear guide rail

308B

second linear guide rail

309

Loading carriage

311

Linear guideway

315

Carriage base

316

Slide top

328

Transmission gear

329

Rack element

330

another rack element

331

gear

332

Axis of rotation

341

Hollow profile part

348

Gear shaft

354

elongated plate element

370

flat, planar truss element

371

first groove rail

372

second groove rail

373

first further elongated linear guide rail

374

second further elongated linear guide rail

375

first further groove rail

376

first further groove rail

377

Linear guide unit

408

Linear guide device

408A

elongated linear guide rail

409

Loading carriage

411

Linear guideway

415

Carriage base

416

Slide top

428

Transmission gear

429A

Rack element

429B

Rack element

430A

Rack element

430B

Rack element

431A

first gear

431B

second gear

441

Hollow profile part

446

first depository

447

second depository

448

Gear shaft

454

elongated plate element

470

Truss element

471

Groove rail

473

upper elongated linear guide rail

475

further groove rail

477

Linear guide unit

Claims (10)

1. Extruder comprising a billet feed device (1), which is arranged at a head side axially in front of a billet stop (4) of the extruder (2), for linear loading into the extruder (2) of a billet (3) which is to be pressed in the extruder (2), wherein the billet (3) can then be brought by a billet loader into a billet receiver upstream of a shape-imparting die, wherein the billet feed device (1) comprises a frame (5), which comprises a linear guide device (8; 108; 208; 308; 408), and a loading carriage (9; 109; 309; 409), which is arranged at the linear guide device (8; 108; 208; 308; 408) to be linearly displaceable in the longitudinal direction of a linear guide track (11; 111; 311; 411), wherein the loading carriage (9; 109; 309; 409) comprises an entrainer part (14) for holding the billet (3) to be loaded, characterised in that the billet feed device (1) is constructed with a multi-part loading carriage (9; 109; 309; 409) with at least one carriage lower part (14; 115; 215; 315; 415), which is linearly displaceable relative to the linear guide device (8; 108; 208; 308; 408), and additionally with a carriage upper part (16; 116; 216; 316; 416) linearly displaceable not only relative to the linear guide device (8; 108; 208; 308; 408), but also relative to the carriage lower part (15; 115; 215; 315; 415).
2. Extruder according to claim 1, characterised in that the carriage upper part (16; 116; 216; 316; 416) is mounted on the carriage lower part (15; 115; 215; 315; 415) to be linearly displaceable in the longitudinal direction (10) of the linear guide track (11; 111; 311; 411).
3. Extruder according to claim 1 or 2, characterised in that the carriage upper part (16; 116; 216; 316; 416) is so arranged at the carriage lower part (15; 115; 215; 315; 415) that in a loading process of the billet (3) the carriage upper part (16; 116; 216; 316; 416) covers a further travel path (19) relative to the linear guide device (8; 108; 208; 308; 408), preferably twice the travel path, in longitudinal direction of the linear guide track (11; 111; 311; 411) than does the carriage lower part (15; 115; 215; 315; 415) relative to the linear guide device (8; 108; 208; 308; 408).
4. Extruder according to any one of claims 1 to 3, characterised in that the carriage lower part (15; 115; 215; 315; 415) is formed to be longer than the carriage upper part (16; 116; 216; 316; 416).
5. Extruder according to any one of claims 1 to 4, characterised in that a translation transmission (28; 128; 328; 428) is arranged between the carriage upper part (16; 116; 216; 316; 416) and a drive unit (20) of the loading carriage (9; 109; 309; 409).
6. Extruder according to any one of claims 1 to 5, characterised in that the carriage upper part (16; 116; 216; 316; 416) comprises a rack element (29; 129; 329; 429A, 429B) interactively connected by means of a gearwheel (31; 131; 331; 431A, 431B), which is rotatably arranged at the carriage lower part (15; 115; 215; 315; 415), with a further rack element (30; 130; 330; 430A, 430B), which is arranged at the linear guide device (8; 108; 208; 308; 408).
7. Extruder according to any one of claims 1 to 6, characterised in that the carriage upper part (16; 116; 216; 316; 416) and the carriage lower part (15; 115; 215; 315; 415) have a common drive unit (20).
8. Extruder according to any one of claims 1 to 7, characterised in that the billet feed device (1) comprises a drive unit (20) for driving the loading carriage (9; 109; 309; 409), which unit comprises a telescopic device (22) for linear displacement of the loading carriage (9; 109; 309; 409) along the linear guide track (11; 111; 311; 411).
9. Extruder according to any one of claims 1 to 8, characterised in that the billet feed device (1) comprises a drive unit (20) for driving the loading carriage (9; 109; 309; 409), which unit comprises a threaded spindle (23) for linear displacement of the loading carriage (9; 109; 309; 409) along the linear guide track (11; 111; 311; 411).
10. Extruder according to any one of claims 1 to 9, characterised in that the entrainer part (14) is so arranged at the loading carriage (9; 109; 309; 409) that in a loading process of the billet (3) the entrainer part (14) covers a further travel path (19) relative to the linear guide device (8; 108; 208; 308; 408), preferably twice the travel path, in longitudinal direction (10) of the linear guide track (11; 111; 311; 411) than a telescopic arm of a telescopic device (22) for linear displacement of the loading carriage (9; 109; 309; 409) along the linear guide track (11; 111; 311; 411).

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