CA2028778A1 - Dishcarge conveying apparatus for an extrusion press - Google Patents
Dishcarge conveying apparatus for an extrusion pressInfo
- Publication number
- CA2028778A1 CA2028778A1 CA 2028778 CA2028778A CA2028778A1 CA 2028778 A1 CA2028778 A1 CA 2028778A1 CA 2028778 CA2028778 CA 2028778 CA 2028778 A CA2028778 A CA 2028778A CA 2028778 A1 CA2028778 A1 CA 2028778A1
- Authority
- CA
- Canada
- Prior art keywords
- conveyor
- longitudinal
- conveying
- beams
- transverse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels for metal extruding
- B21C35/02—Removing or drawing-off work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/53—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another
- B65G47/54—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another at least one of which is a roller-way
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Chain Conveyers (AREA)
- Relays Between Conveyors (AREA)
- Extrusion Of Metal (AREA)
- Attitude Control For Articles On Conveyors (AREA)
- Intermediate Stations On Conveyors (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In a horizontal extrusion press, the discharge conveyor comprises a plurality of short longitudinal conveyor units each comprising chains and beams, and a subsequent transverse conveyor has stationary conveying elements extending permanently into spaces between the successive longitudinal conveyor units. The longitudinal conveyor units can be raised and lowered relative to the transverse conveyor, in order to transfer extruded products from the longitudinal conveyor onto the transverse conveyor.
In a horizontal extrusion press, the discharge conveyor comprises a plurality of short longitudinal conveyor units each comprising chains and beams, and a subsequent transverse conveyor has stationary conveying elements extending permanently into spaces between the successive longitudinal conveyor units. The longitudinal conveyor units can be raised and lowered relative to the transverse conveyor, in order to transfer extruded products from the longitudinal conveyor onto the transverse conveyor.
Description
~02877~
M&C FOLIO: 716P61985 WANGDOC: 0027d TI TLE
"Discharqe conveying apparatus_for an extrusion press'~
BACKGROUND OF THE I NVENTI ON
The discharge or exit conveying installat~ons of extrusion presses have the task of conveying the extruded products or extrusions away lengthwise in the extrusion direction, i.e. the discharge or exit direction, and then conveying them cros6wi8e in their entire length or in portions, to give the extrusions time to cool and, where appropriate, to convey them to a stretching bench as well as to devices for dividing them into commercial lengths and to stacking devices. Care must be taken to exert light tension on the extrusion so that it is held stretched straight, and for this purpose the longitudinal discharge conveyor ls driven at a conveying speed which is somewhat greater than the extruding speed. There i6 thus no necessity for special drawing-out devices consisting of a carriage which can be moved lengthwise and which has gripping devicss for the extrusion. The structural cost of such a drawing-out device cannot be balanced by a less expensive design of the longitudinal convsyor, but rathex it becomes neces~ary to coordinate the longitudinal conveyor and 2028~78 the drawing-out device.
What are known as beam conveyor belts are preferably provided as longitudinal conveyors. These beam conveyor belts are conveyors with parallel endless circulating chains arranged in pairs and with spaced beams connecting these, which beams are moved transversely by the chains in the discharge direction (Zeitschr.f.Metallkunde, vol.60(1969) No.3, p.172 to 179; advertisement leaflet P2/1117, April 1970, Schloemann Aktiengesellschaft; W. German Patent 25 56 894). ~he beams offer the extrusions sufficient support to eliminate deformation of the extrusions, whilst scrape marks on the extrusion~ caused by the beams advancing slightly faster are avoided in that the beams themselves or supports on the beams consist of appropriate material. Supports made of graphite have proved particularly suitable. The span of the supported extrusions determines the spacing of the beams in the discharge direction, which spacing is sufficient in each case to make it possible for the extrusions to cool well. Moreover, the space between any two ad;acent beams must be sufficient for the conveying elements of the transverse conveyor to be brought between the beams of the longitu~inal conveyor and for the extrusions to be lifted up from the beams of the longitudinal conveyor by vertical relative movement and taken up by the transverse conveyor. This means that the longitudinal 2~12877~
conveyor mu6t be stopped for the entire time of entry, vertical relative movement and exit of the conveying elements of the transverse conveyor. Alternatively, stopping the longitudinal conveyor is not necessary if, during the time that they are engaged between the beams of the longitudinal conveyor, the conveying elements of the transverse conveyor can move with the longitudinal conveyor in the discharge direction and, after they have left the region of the beams again, are brought bac~ to their starting position by springs or a piston-cylinder unit (West German Patent Specification 1 300 898). While the conveying elements of the transverse conveyor are brought back to their starting position, the extrusion and~or extrusion portion taken off by the conveying elements from the longitudinal conveyor must also be moved contrary to the discharge direction, which in turn can lead to damage to the extrusion or extrusion portion. Moreover, this device also has the disadvantage that, as a result of expansion, sag and play over the length of the longitudinal conveyor, more and more deviations in the chain pitch and thus in the beam pitch can occur, which deviations lead to the collision of beams of the longitudinal conveyor with conveying elements of the transverse conveyor.
It is an object of the invention to shorten the cycle time for the transfer of extrusions and/or extrusion portions from the longitudinal conveyor to the conveying 2~2~77~
elements of the transverse conveyor, and to eliminate collisions of the beams of the longitudinal conveyor and the conveying elements of the transverse conveyor.
SUMMARY OF THE I NVENTI ON
According to the invention, the longitudinal conveyor is formed, depending on its length, from cooperating individual conveyors each of a length which corresponds to the space between adjacent conveying elements of the transverse conveyor, which elements remain in the conveying region of the longitudinal conveyor.
Although the forming of a longitudinal conveyor at the exit of an extrusion press from cooperating individual conveyors, depending on its length, in order to be able to drive the individual conveyors separately at different speeds, i6 known in principle (West German Patent Specification 14 52 325), transverse conveyors with their conveying element~ are not provided in the region of these individual conveyors.
The invention maintains all the advantages of the "beam conveyors"; the conveying elements of the trancverse conveyor remain permanent~y in the conveying region of the longitudinal conveyor, so that no time for entry and exit of these conveying elements into the conveying region of the longitudinal conveyor is needed and the 20~778 .
cycle tlme for transfer becomes correspondingly shorter, and the longitudinal conveyor only needs to be stopped, and then only for a short time, when particularly sensitive extrusion shapes or materials are being transferred; any danger of collision between the longitudinal and transverse conveyors i5 eliminated.
Each individual conveyor is preferably constructed with a frame in which two shafts are mounted, each carryin~ a pair of chain wheels, and supporting rails are provided between the chain wheels for supporting the chains carrying the beams.
According to a further feature of the invention, the frames of the individual conveyors are combined, in groups or in their entirety, in base frames, and the individual conveyors are drivingly connected on the side facing away from the transverse conveyor by chain drives and chain wheels seated on the shafts which are extended to this side.
For the balancing of the vertical movement of the longitudinal conveyor or the transverse conveyor, which movement accompanies the vertical relative movement of longitudinal and transverse conveyors, it is advantageous to form the longitudinal conveyor so as to be raisable and lowerable, i.e. vertically movable, particularly since this formation also turn6 out to be 2~28778 .
structurally advantageous. In accordance with a further feature of the invention, the base frame is or the several base frames are therefore guided by columns in a vertlcal direction and, being provided with lifting means, can be lifted and lowered in relation to the conveying elements of the transverse conveyor which are arranged at a fixed height from the foundation. The invention therefore also provides that the base framets) is (are) offset by elbow levers in relation to the foundation in a vertical direction and the elbow levers are connected by a rod linkage to each other and to an eccentric drive.
As already mentioned, the spacing of the beams of the beam conveyor i8 determined by the support span, the free bending length of an overhanging extrusion always being smaller than the distance between the beams. AB a result of the design of the longitudinal conveyor as plural individual conveyors in accordance with the invention, however, the overhanging extrusion loses its support as a beam dips away around a chain wheel, whereby the overhanging unsupported extrusion length can grow to almost double the size of the distance between the beams. In the case of extrusions having a cross-section which is small and/or has low resistance -to bending, this can lead to sag of the extrusion tip to such an extent that the extrusion tip collides with the conveying elements of the transverse conveyor. Since a 202~77~
reduction of the beam spacing should be avoided, in accordance with another feature of the invention each shaft is equipped, between the chain wheels deflecting the chains, with one or more beams which are connected to and rotate with the shaft, and which, in cooperation in each case with one of the beams carried by the chains, form a star which gives the extrusions additional support, in such a way that the interposed beams form intermediate supports for the extrusion and in this way reduce the size of the free overhanging extrusion length accordingly.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings show an embodiment of the invention by way of example only. In the drawings:
Figure 1 shows in plan a general view of an extrusion plant with longitudinal and transverse discharge conveyors and subsequent adjustment means.
Figure 2 shows on a larger scale the segment of the plan view encircled in Figure 1, Figure 3 shows a side view of the segment of the plant shown in Figure 2, Figure 4 shows on a further enlarged scale a plan view 202~778 .
according to the segment encircled in Figure 2, and Figure 5 shows a side view in section along the line V-V
drawn in Figure 4.
The complete installation shown in figure 1 consists of an extrusion press 1 at whose exit a longitudinal conveyor 2 is arranged, with which conveying elements of a transverse conveyor 3 engage. The transverse conveyor 3 takes up the extrusions and/or portions of these extrusions, drawn out of the extrusion press 1 by the longitudinal conveyor 2, by vertical relative movement of the longitudinal conveyor 2 and transverse conveyor 3. During transverse conveyance, the extrusions and/or extrusion portions have sufficient time for cooling, which has already started on the longitudinal conveyor 2. A stretching bench 4 for the stretcher levelling of the extrusions and/or extrusion portions is integrated in the transverse conveyor 3. The extrusions and/or extrusion portions are delivered from the transverse conveyor 3 to a further longitudinal conveyor 5 which conveys them, collected in groups, to a saw or shears 6 which divides the extrusions into commercial lengths and conveys them to a stacking device 7.
As shown in figures 2 and 3, the longitudinal conveyor 2 consists of a plurality of cooperating individual conveyors 12 arranged in tandem, each of which has a 202~78 length which fills the gap between the conveying elements 13 of the transverse conveyor 3. Each individ~al conveyor 12 consists of a frame 14 in which two shafts 15 and 16 are mounted, each of which carries a pair of chain wheels 17. Two endless chains 18, arranged in pairs like the chain wheels 17, are guided by a chain wheel 17 on the shaft 15 and a chain wheel 17 on the shaft 16 respectively. These pairs of chains 18 carry holders 19 for inserts 20 of suitable material, in particular graphite. To support the flights of the chains 18, and thus the beams 19/20 formed from the holders 19 and inserts 20, the frames 14 are provided with slide rails 21. The shafts 15 are extended, on the side facing away from the transverse conveyor 3, and carry chain wheels 22 on their shaft stubs 15a projecting from the frame 14. An endless chain 23 i8 arranged along the frame 14, which chain is in engagement with the chain wheels 22 of the individual conveyors 12 and conneots these in a driving manner. The chain 23 is therefore provided with a drive tnot shown) and a chain tensioner 25 acting on one deflecting wheel 24 thereof. A cover 26 for the chain 23, the chain wheels 22, the chain drive, the deflecting wheel 24 and the chain tensioner 25 extends along the individual conveyors 12 and their frame 14.
The conveying elements 13 of the transverse conveyor 3 project between the adjacent ends of adjacent individual 2~2~77~
conveyors 12, in such a way that, by vertical relative movement between the conveying elements 13 and the individual conveyors 12, the extrusions and/or extrusion portions which have run onto the individual conveyors 12 can be taken up by the conveying elements 13 to be transported transversely on the transverse convsyor 3.
For this purpose, either all the individual conveyors 12 are attached to one base frame 31, or groups ~eight in the illustrated embodiment) of individual conveyors 12 (four per group in the illustrated embodiment) are attached to interconnected base frames 31 by supports 32. Columns 34 are attached to the foundation 33, which columns guide the base frame(s) 31 for movement in a vertical direction. The base frame i8 supported by elbow levers 35, of which one lever part 35a can be varied in length to align the base frame 31 and adjust.the conveying plane of the longltudinal conveyor 2, formed by the upper edges of the beams 19/20, to the conveying plane of the conveying element 13 of the transverse conveyor 3. The other lever part 35b is connected to a lever 36. The levers 36 are connected to each other by a rod linkage 37 and by a further rod linkage 38 to an eccentric 39 of a drive 40. By displacing the rod linkage 37 in the direction of the arrow S, the base frame 31 is lowered, in such a way that the extrusions and/or extrusion portions lying on the beams 19/20 are lowered into contact with the ¢onveying elements 13 and can then be conveyed by these in a transverse direction.
2~2~77~
As soon as the extrusions and/or extrusion portions have left the region of the lonqitudinal conveyor, the rod linkage 37 is moved contrary to the direction of the arrow S, in 6uch a way that the longitudinal conveying plane formed by the beams 19/20 lies above that of the transverse conveying elements 13 and the longitudinal conveyor 2 is available for receiving a further extrusion and/or extrusion portion.
The conveying element 13 of the transverse conveyor remain permanently in place between the successive individual conveyors 12 of the longitudinal conveyor, and in particular they do not move transversely relative to the longitudinal conveyor. The only relative movement of the longitudinal and transverse conveyors is the vertical relative movement involved in tran~ferring extrusions from the longitudinal to the transverse conveyor. ~'hus, as alraady explained, the longitudinal conveyor can run essentially continuously, and the cycle time for transfer from the longi$udinal to the transverse conveyor is no more than the time required for the vertical relative movement of the two conveyors.
At the transition from one individual conveyor 12 to another, in each of which transitions a convaying element 13 of the transverse conveyor 3 is placed, the spacing of the beams 19, 20 exceeds the normal spacing of the beam~ 19/20 along the pairs of chains 18 in that, ~0~877~
as a result of a beam 19/20 dipping away with the chains 18 which run around the chain wheels 1~ of a shaft 15, these beams 19/20 are not effective. To avoid, in these transition regions, knocking or grinding of the extrusions at or on the conveyin~ elements 13 of the transverse conveyor, without having to choose a standard pitch of the beams 19/20 which is smaller than otherwise necessary, holders 29 for inserts 30, i.e. beam~ 29/30 evenly distributed with the beams 19/20 rotating with the chains 18, are mounted onto the shafts 15 and 16 between the chain wheels 18, and connected to the shafts 15 and/or 16. Instead of the two beams 29/30 in the embodiment in figure 5, a drum of appropriate external diameter with a cutout for the beams 19/20 rotating with the chains 18 could also be provided, though, for structural reasons, preference will generally be given to the solution shown in the drawing.
M&C FOLIO: 716P61985 WANGDOC: 0027d TI TLE
"Discharqe conveying apparatus_for an extrusion press'~
BACKGROUND OF THE I NVENTI ON
The discharge or exit conveying installat~ons of extrusion presses have the task of conveying the extruded products or extrusions away lengthwise in the extrusion direction, i.e. the discharge or exit direction, and then conveying them cros6wi8e in their entire length or in portions, to give the extrusions time to cool and, where appropriate, to convey them to a stretching bench as well as to devices for dividing them into commercial lengths and to stacking devices. Care must be taken to exert light tension on the extrusion so that it is held stretched straight, and for this purpose the longitudinal discharge conveyor ls driven at a conveying speed which is somewhat greater than the extruding speed. There i6 thus no necessity for special drawing-out devices consisting of a carriage which can be moved lengthwise and which has gripping devicss for the extrusion. The structural cost of such a drawing-out device cannot be balanced by a less expensive design of the longitudinal convsyor, but rathex it becomes neces~ary to coordinate the longitudinal conveyor and 2028~78 the drawing-out device.
What are known as beam conveyor belts are preferably provided as longitudinal conveyors. These beam conveyor belts are conveyors with parallel endless circulating chains arranged in pairs and with spaced beams connecting these, which beams are moved transversely by the chains in the discharge direction (Zeitschr.f.Metallkunde, vol.60(1969) No.3, p.172 to 179; advertisement leaflet P2/1117, April 1970, Schloemann Aktiengesellschaft; W. German Patent 25 56 894). ~he beams offer the extrusions sufficient support to eliminate deformation of the extrusions, whilst scrape marks on the extrusion~ caused by the beams advancing slightly faster are avoided in that the beams themselves or supports on the beams consist of appropriate material. Supports made of graphite have proved particularly suitable. The span of the supported extrusions determines the spacing of the beams in the discharge direction, which spacing is sufficient in each case to make it possible for the extrusions to cool well. Moreover, the space between any two ad;acent beams must be sufficient for the conveying elements of the transverse conveyor to be brought between the beams of the longitu~inal conveyor and for the extrusions to be lifted up from the beams of the longitudinal conveyor by vertical relative movement and taken up by the transverse conveyor. This means that the longitudinal 2~12877~
conveyor mu6t be stopped for the entire time of entry, vertical relative movement and exit of the conveying elements of the transverse conveyor. Alternatively, stopping the longitudinal conveyor is not necessary if, during the time that they are engaged between the beams of the longitudinal conveyor, the conveying elements of the transverse conveyor can move with the longitudinal conveyor in the discharge direction and, after they have left the region of the beams again, are brought bac~ to their starting position by springs or a piston-cylinder unit (West German Patent Specification 1 300 898). While the conveying elements of the transverse conveyor are brought back to their starting position, the extrusion and~or extrusion portion taken off by the conveying elements from the longitudinal conveyor must also be moved contrary to the discharge direction, which in turn can lead to damage to the extrusion or extrusion portion. Moreover, this device also has the disadvantage that, as a result of expansion, sag and play over the length of the longitudinal conveyor, more and more deviations in the chain pitch and thus in the beam pitch can occur, which deviations lead to the collision of beams of the longitudinal conveyor with conveying elements of the transverse conveyor.
It is an object of the invention to shorten the cycle time for the transfer of extrusions and/or extrusion portions from the longitudinal conveyor to the conveying 2~2~77~
elements of the transverse conveyor, and to eliminate collisions of the beams of the longitudinal conveyor and the conveying elements of the transverse conveyor.
SUMMARY OF THE I NVENTI ON
According to the invention, the longitudinal conveyor is formed, depending on its length, from cooperating individual conveyors each of a length which corresponds to the space between adjacent conveying elements of the transverse conveyor, which elements remain in the conveying region of the longitudinal conveyor.
Although the forming of a longitudinal conveyor at the exit of an extrusion press from cooperating individual conveyors, depending on its length, in order to be able to drive the individual conveyors separately at different speeds, i6 known in principle (West German Patent Specification 14 52 325), transverse conveyors with their conveying element~ are not provided in the region of these individual conveyors.
The invention maintains all the advantages of the "beam conveyors"; the conveying elements of the trancverse conveyor remain permanent~y in the conveying region of the longitudinal conveyor, so that no time for entry and exit of these conveying elements into the conveying region of the longitudinal conveyor is needed and the 20~778 .
cycle tlme for transfer becomes correspondingly shorter, and the longitudinal conveyor only needs to be stopped, and then only for a short time, when particularly sensitive extrusion shapes or materials are being transferred; any danger of collision between the longitudinal and transverse conveyors i5 eliminated.
Each individual conveyor is preferably constructed with a frame in which two shafts are mounted, each carryin~ a pair of chain wheels, and supporting rails are provided between the chain wheels for supporting the chains carrying the beams.
According to a further feature of the invention, the frames of the individual conveyors are combined, in groups or in their entirety, in base frames, and the individual conveyors are drivingly connected on the side facing away from the transverse conveyor by chain drives and chain wheels seated on the shafts which are extended to this side.
For the balancing of the vertical movement of the longitudinal conveyor or the transverse conveyor, which movement accompanies the vertical relative movement of longitudinal and transverse conveyors, it is advantageous to form the longitudinal conveyor so as to be raisable and lowerable, i.e. vertically movable, particularly since this formation also turn6 out to be 2~28778 .
structurally advantageous. In accordance with a further feature of the invention, the base frame is or the several base frames are therefore guided by columns in a vertlcal direction and, being provided with lifting means, can be lifted and lowered in relation to the conveying elements of the transverse conveyor which are arranged at a fixed height from the foundation. The invention therefore also provides that the base framets) is (are) offset by elbow levers in relation to the foundation in a vertical direction and the elbow levers are connected by a rod linkage to each other and to an eccentric drive.
As already mentioned, the spacing of the beams of the beam conveyor i8 determined by the support span, the free bending length of an overhanging extrusion always being smaller than the distance between the beams. AB a result of the design of the longitudinal conveyor as plural individual conveyors in accordance with the invention, however, the overhanging extrusion loses its support as a beam dips away around a chain wheel, whereby the overhanging unsupported extrusion length can grow to almost double the size of the distance between the beams. In the case of extrusions having a cross-section which is small and/or has low resistance -to bending, this can lead to sag of the extrusion tip to such an extent that the extrusion tip collides with the conveying elements of the transverse conveyor. Since a 202~77~
reduction of the beam spacing should be avoided, in accordance with another feature of the invention each shaft is equipped, between the chain wheels deflecting the chains, with one or more beams which are connected to and rotate with the shaft, and which, in cooperation in each case with one of the beams carried by the chains, form a star which gives the extrusions additional support, in such a way that the interposed beams form intermediate supports for the extrusion and in this way reduce the size of the free overhanging extrusion length accordingly.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings show an embodiment of the invention by way of example only. In the drawings:
Figure 1 shows in plan a general view of an extrusion plant with longitudinal and transverse discharge conveyors and subsequent adjustment means.
Figure 2 shows on a larger scale the segment of the plan view encircled in Figure 1, Figure 3 shows a side view of the segment of the plant shown in Figure 2, Figure 4 shows on a further enlarged scale a plan view 202~778 .
according to the segment encircled in Figure 2, and Figure 5 shows a side view in section along the line V-V
drawn in Figure 4.
The complete installation shown in figure 1 consists of an extrusion press 1 at whose exit a longitudinal conveyor 2 is arranged, with which conveying elements of a transverse conveyor 3 engage. The transverse conveyor 3 takes up the extrusions and/or portions of these extrusions, drawn out of the extrusion press 1 by the longitudinal conveyor 2, by vertical relative movement of the longitudinal conveyor 2 and transverse conveyor 3. During transverse conveyance, the extrusions and/or extrusion portions have sufficient time for cooling, which has already started on the longitudinal conveyor 2. A stretching bench 4 for the stretcher levelling of the extrusions and/or extrusion portions is integrated in the transverse conveyor 3. The extrusions and/or extrusion portions are delivered from the transverse conveyor 3 to a further longitudinal conveyor 5 which conveys them, collected in groups, to a saw or shears 6 which divides the extrusions into commercial lengths and conveys them to a stacking device 7.
As shown in figures 2 and 3, the longitudinal conveyor 2 consists of a plurality of cooperating individual conveyors 12 arranged in tandem, each of which has a 202~78 length which fills the gap between the conveying elements 13 of the transverse conveyor 3. Each individ~al conveyor 12 consists of a frame 14 in which two shafts 15 and 16 are mounted, each of which carries a pair of chain wheels 17. Two endless chains 18, arranged in pairs like the chain wheels 17, are guided by a chain wheel 17 on the shaft 15 and a chain wheel 17 on the shaft 16 respectively. These pairs of chains 18 carry holders 19 for inserts 20 of suitable material, in particular graphite. To support the flights of the chains 18, and thus the beams 19/20 formed from the holders 19 and inserts 20, the frames 14 are provided with slide rails 21. The shafts 15 are extended, on the side facing away from the transverse conveyor 3, and carry chain wheels 22 on their shaft stubs 15a projecting from the frame 14. An endless chain 23 i8 arranged along the frame 14, which chain is in engagement with the chain wheels 22 of the individual conveyors 12 and conneots these in a driving manner. The chain 23 is therefore provided with a drive tnot shown) and a chain tensioner 25 acting on one deflecting wheel 24 thereof. A cover 26 for the chain 23, the chain wheels 22, the chain drive, the deflecting wheel 24 and the chain tensioner 25 extends along the individual conveyors 12 and their frame 14.
The conveying elements 13 of the transverse conveyor 3 project between the adjacent ends of adjacent individual 2~2~77~
conveyors 12, in such a way that, by vertical relative movement between the conveying elements 13 and the individual conveyors 12, the extrusions and/or extrusion portions which have run onto the individual conveyors 12 can be taken up by the conveying elements 13 to be transported transversely on the transverse convsyor 3.
For this purpose, either all the individual conveyors 12 are attached to one base frame 31, or groups ~eight in the illustrated embodiment) of individual conveyors 12 (four per group in the illustrated embodiment) are attached to interconnected base frames 31 by supports 32. Columns 34 are attached to the foundation 33, which columns guide the base frame(s) 31 for movement in a vertical direction. The base frame i8 supported by elbow levers 35, of which one lever part 35a can be varied in length to align the base frame 31 and adjust.the conveying plane of the longltudinal conveyor 2, formed by the upper edges of the beams 19/20, to the conveying plane of the conveying element 13 of the transverse conveyor 3. The other lever part 35b is connected to a lever 36. The levers 36 are connected to each other by a rod linkage 37 and by a further rod linkage 38 to an eccentric 39 of a drive 40. By displacing the rod linkage 37 in the direction of the arrow S, the base frame 31 is lowered, in such a way that the extrusions and/or extrusion portions lying on the beams 19/20 are lowered into contact with the ¢onveying elements 13 and can then be conveyed by these in a transverse direction.
2~2~77~
As soon as the extrusions and/or extrusion portions have left the region of the lonqitudinal conveyor, the rod linkage 37 is moved contrary to the direction of the arrow S, in 6uch a way that the longitudinal conveying plane formed by the beams 19/20 lies above that of the transverse conveying elements 13 and the longitudinal conveyor 2 is available for receiving a further extrusion and/or extrusion portion.
The conveying element 13 of the transverse conveyor remain permanently in place between the successive individual conveyors 12 of the longitudinal conveyor, and in particular they do not move transversely relative to the longitudinal conveyor. The only relative movement of the longitudinal and transverse conveyors is the vertical relative movement involved in tran~ferring extrusions from the longitudinal to the transverse conveyor. ~'hus, as alraady explained, the longitudinal conveyor can run essentially continuously, and the cycle time for transfer from the longi$udinal to the transverse conveyor is no more than the time required for the vertical relative movement of the two conveyors.
At the transition from one individual conveyor 12 to another, in each of which transitions a convaying element 13 of the transverse conveyor 3 is placed, the spacing of the beams 19, 20 exceeds the normal spacing of the beam~ 19/20 along the pairs of chains 18 in that, ~0~877~
as a result of a beam 19/20 dipping away with the chains 18 which run around the chain wheels 1~ of a shaft 15, these beams 19/20 are not effective. To avoid, in these transition regions, knocking or grinding of the extrusions at or on the conveyin~ elements 13 of the transverse conveyor, without having to choose a standard pitch of the beams 19/20 which is smaller than otherwise necessary, holders 29 for inserts 30, i.e. beam~ 29/30 evenly distributed with the beams 19/20 rotating with the chains 18, are mounted onto the shafts 15 and 16 between the chain wheels 18, and connected to the shafts 15 and/or 16. Instead of the two beams 29/30 in the embodiment in figure 5, a drum of appropriate external diameter with a cutout for the beams 19/20 rotating with the chains 18 could also be provided, though, for structural reasons, preference will generally be given to the solution shown in the drawing.
Claims (10)
1. Discharge conveyor apparatus for a longitudinal extrusion press comprising:
a longitudinal conveyor disposed to receive an elongate extruded product from the extrusion press and to convey said product longitudinally;
and a transverse conveyor intersecting and extending transversely to said longitudinal conveyor, disposed to receive said extruded product from said longitudinal conveyor and to convey it from said longitudinal conveyor in a direction transverse to the longitudinal direction of said product and of said longitudinal conveyor;
and wherein said transverse conveyor comprises a plurality of conveying elements spaced apart along and each extending transversely across the longitudinal conveyor, and said longitudinal conveyor comprises a plurality of individual conveyor units disposed in tandem with one another and each extending between adjacent ones of said conveying elements.
a longitudinal conveyor disposed to receive an elongate extruded product from the extrusion press and to convey said product longitudinally;
and a transverse conveyor intersecting and extending transversely to said longitudinal conveyor, disposed to receive said extruded product from said longitudinal conveyor and to convey it from said longitudinal conveyor in a direction transverse to the longitudinal direction of said product and of said longitudinal conveyor;
and wherein said transverse conveyor comprises a plurality of conveying elements spaced apart along and each extending transversely across the longitudinal conveyor, and said longitudinal conveyor comprises a plurality of individual conveyor units disposed in tandem with one another and each extending between adjacent ones of said conveying elements.
2. Conveyor apparatus as claimed in Claim 1 in which each said conveyor unit comprises a plurality of parallel endless chains, driving means for moving said chains in circulation, and a plurality of spaced beams extending transversely to and driven by said chains for carrying and conveying said products.
3. Conveyor apparatus as claimed in Claim 1 further comprising means for effecting relative vertical movement of said conveying elements and said conveyor units for transferring said products from said conveyor units onto said conveying elements.
4. Conveyor apparatus as claimed in Claim 2 further comprising means for effecting relative vertical movement of said conveying elements and said conveyor units for transferring said products from said conveyor units onto said conveying elements.
5. A conveying device arranged at the exit of an extrusion press, consisting of beams which are carried by closed rotating chains arranged in pairs and which are moved in the discharge direction of the extruded products, and of a transverse conveyor engaging with this longitudinal conveyor and taking up the extruded products and/or portions thereof by vertical relative movement and formed from a plurality of parallel-running conveying elements, characterised in that the longitudinal conveyor is formed, depending on its length, from cooperating individual conveyors each of a length which corresponds to the space between between said conveying elements, which elements remain in the conveying region of the longitudinal conveyor.
6. A conveying device according to Claim 5, characterised in that the individual conveyors consist each of a frame in which two shafts are mounted, each carrying a pair of chain wheels, and supporting rails are provided between the chain wheels for the chains carrying the beams.
7. A conveying device according to Claim 6, characterised in that the frames are in each case combined in at least one group of several or of all the individual conveyors by a base frame, and the individual conveyors are connected in a driving manner by chain drives on the side facing away from the transverse conveyor and chain wheels seated on the said shafts which are extended to this side.
8. A conveying device according to Claim 7, characterised in that the base frame is or the several base frames are guided by columns in a vertical direction and, being provided with lifting means, can be lifted and lowered in relation to the conveying elements of the transverse conveyor, which are arranged at a fixed height from the foundation.
9. A conveying device according to Claim 8, characterised in that, the base frame is or the several base frames are supported by elbow levers in a vertical direction and the elbow levers are connected by a rod linkage to each other and to an eccentric drive.
10. A conveying device according Claim 6, characterised in that each shaft is provided, between the chain wheels driving the chains, with one or more beams rotating with the shaft, and the latter beams form, in cooperation with in each case one of the beams carried by the chains, a star which supports the extrusions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893936177 DE3936177A1 (en) | 1989-10-31 | 1989-10-31 | CONVEYOR DEVICE IN THE EXHAUST OF AN EXTRUSION PRESS |
| DEP3936177.2 | 1989-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2028778A1 true CA2028778A1 (en) | 1991-05-01 |
Family
ID=6392555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2028778 Abandoned CA2028778A1 (en) | 1989-10-31 | 1990-10-29 | Dishcarge conveying apparatus for an extrusion press |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0425869A3 (en) |
| JP (1) | JPH03165923A (en) |
| CA (1) | CA2028778A1 (en) |
| DE (1) | DE3936177A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618117A (en) * | 2020-05-06 | 2020-09-04 | 江苏江顺精密机电设备有限公司 | A three-head tractor |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19519574C1 (en) * | 1995-05-29 | 1996-10-10 | Koemmerling Kunststoff | Separator for moving cut profiles from prodn. line to transporting containers |
| EP0759331B1 (en) * | 1995-08-12 | 1997-04-09 | SMS HASENCLEVER GmbH | Transverse step-by-step transport apparatus of profiles between an extrusion press and a stretcher leveller |
| DE19600827A1 (en) * | 1996-01-12 | 1997-07-17 | Greiz Plasttechnik | Cycled transporting of moulds holding refrigerator or freezer cabinets during insulation foaming |
| DE19728347A1 (en) * | 1997-07-03 | 1999-01-07 | Tul Log Ges Fuer Transport Ums | Segment conveyor |
| EP0959025A1 (en) | 1998-05-20 | 1999-11-24 | SMS EUMUCO GmbH | Conveying device at the discharge end of an extrusion press |
| NO20012872L (en) * | 2001-06-11 | 2002-12-12 | Norsk Hydro As | Method and equipment for calibration of extruded profiles |
| DE10241348B4 (en) * | 2002-09-06 | 2004-09-30 | Knapp Logistik Automation Ges.M.B.H. | Conveyor for the transport of piece goods, preferably in a picking system |
| CN106800165B (en) * | 2017-02-09 | 2022-05-17 | 慈溪市今日自动化科技有限公司 | Red material processing system of forging |
| CN110356823A (en) * | 2019-07-24 | 2019-10-22 | 德屹智能科技(扬州)有限公司 | A kind of commutation lift and conveyer and transportation system |
| CN113510913B (en) * | 2021-07-15 | 2022-11-25 | 深圳市旭龙光电有限公司 | Receiving device for optical-grade PMMA plate extruder |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2993583A (en) * | 1958-06-03 | 1961-07-25 | Toronto Star Ltd | Roller slat conveyor diverter mechanism |
| DE1300898B (en) * | 1961-06-28 | 1969-08-14 | Sack Gmbh Maschf | Transfer device for the strand pressed out of an extrusion press |
| BE640430A (en) * | 1963-02-15 | 1964-05-26 | ||
| CH430578A (en) * | 1963-02-15 | 1967-02-15 | Johns Manville Societe Anonyme | Belt conveyor |
| US3271985A (en) * | 1964-01-14 | 1966-09-13 | Mueller Brass Co | Apparatus and method for straightening extruded bar stock |
| FR1450053A (en) * | 1965-10-06 | 1966-05-06 | Fielding & Platt Ltd | Conveyor in particular for spinning presses as well as spinning presses provided with this conveyor |
| FR2294773A1 (en) * | 1974-12-18 | 1976-07-16 | Secim | PROCESS AND INSTALLATION FOR FORMING BAR TAPES |
| US4174774A (en) * | 1978-01-30 | 1979-11-20 | Bourgeois Ronald D | Four-way diverting conveyor |
| US4790167A (en) * | 1987-06-23 | 1988-12-13 | Granco-Clark, Inc. | Extrusion run-out table |
| CA2003437C (en) * | 1988-11-22 | 1999-08-10 | Minoru Aoyagi | Workpiece conveying method and device for a cutting machine |
-
1989
- 1989-10-31 DE DE19893936177 patent/DE3936177A1/en active Granted
-
1990
- 1990-10-13 EP EP19900119642 patent/EP0425869A3/en not_active Ceased
- 1990-10-29 CA CA 2028778 patent/CA2028778A1/en not_active Abandoned
- 1990-10-31 JP JP2292216A patent/JPH03165923A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618117A (en) * | 2020-05-06 | 2020-09-04 | 江苏江顺精密机电设备有限公司 | A three-head tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3936177C2 (en) | 1993-02-18 |
| EP0425869A2 (en) | 1991-05-08 |
| JPH03165923A (en) | 1991-07-17 |
| DE3936177A1 (en) | 1991-05-02 |
| EP0425869A3 (en) | 1991-10-23 |
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| Date | Code | Title | Description |
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