EP0864382B1 - Tool for the drawing of elongated products - Google Patents
Tool for the drawing of elongated products Download PDFInfo
- Publication number
- EP0864382B1 EP0864382B1 EP98250072A EP98250072A EP0864382B1 EP 0864382 B1 EP0864382 B1 EP 0864382B1 EP 98250072 A EP98250072 A EP 98250072A EP 98250072 A EP98250072 A EP 98250072A EP 0864382 B1 EP0864382 B1 EP 0864382B1
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- EP
- European Patent Office
- Prior art keywords
- chain
- roller elements
- tools
- roller
- rods
- 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.)
- Revoked
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- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/27—Carriages; Drives
- B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
Definitions
- the invention relates to a chain pulling machine for the continuous pulling of Rods and tubes by means of segmental, lying on two in one plane Drawing chains of synchronously advancing drawing tools on rigid guides rolling in an endless loop so that each Press opposing drawing tools onto the drawing material and press it over Take frictional engagement, the contact pressure of the drawing tools in the area in where the tools come into contact with the pipe via load-bearing rollers are supported in an endless loop between the inner surface of the Tension members and the rigid guide can be taken.
- EP-A-0 548 723 shows an embodiment according to the preamble of claim 1, in which the pull chains with their smooth rear surfaces similar to a rolling bearing over a moving one Roll off the roller chain.
- the clamping force is directly from the Clamp the pull chain over the rollers themselves on a fixed track transfer.
- a disadvantage of this design is the complicated structure of the mechanical parts. So the roller chain must run over its own sprockets and be redirected. These sprockets are loose on the shafts of the roller bearings Sprockets of the actual pull chain stored. It is also difficult to do this type of If the rollers wear out, replace the chain in a short time.
- the aim of the invention described below is to reduce the mechanical effort simplify and enable faster changing of the wheels.
- a role element consists of two roles, each with one Bolts are connected on both sides by means of tabs. Through the Relative speed between revolving pull chain and stationary guideway the roller elements are similar to rolling bearings with about half Pull chain speed taken and run with the pull chain.
- the guideway is provided with to provide side guide strips that hold the tabs of the roller elements on the at least partially embrace the side facing away from the guideway.
- rollers ensure that the rollers are not on their runway cant, but the pulling tools arranged on the drive chains are sliding support.
- the guide strips at least encompass the tabs of the roller elements partially and ensure that the roller elements from the guideways and are not guided by the pull chains as in the prior art. If you Lead roller elements from the pull chains, so the rollers would be on the flat Run along the back of the drawing chain, which, however, is a polygon in the deflection path forms.
- the Guideways designed for two side by side guided Rolienieri is between which one the mutually facing tabs of both roller elements at least partially overlapping guide bar is arranged.
- the double Arrangement of the roller elements on the guideway still allows the recording higher support forces, with guidance in this embodiment too Roller elements on the entire orbit due to the additional center Guide bar is guaranteed.
- At least one of the guide strips is removable.
- the usage of the individual role elements also makes their exchange in the case of Damage easily possible. While in the prior art complete chains individual roll elements can now be removed by according to the invention, one of the side guide strips is simply removed. The Installation of new roller elements takes place in reverse order, the shortest Setup and repair times can be met.
- the end faces of the Tabs of each roller element as contact surfaces for adjacent roller elements are alternately convex and concave, the radii of the end faces are selected in accordance with the deflection radii of the roller elements.
- This Design of the roller elements ensures that the total length of all Roller elements are also retained in the deflection tracks. The measure serves the jam-free transport of the roller elements on their path, so that these move practically like a chain, the chain elements of which are not connected are.
- Figure 1 shows a cross section through a chain center.
- the pull chain 1 settles composed of individual chain links, two of which are designated 2a and 2b are.
- the chain links 2a and 2b are articulated to the bolt 3.
- the rollers 4a and 4b On Both ends of the bolt 3 are the rollers 4a and 4b, which are only the Have the task of pulling the pull chain 1 via the drive sprockets 5a and 5b act upon.
- roller element 6 shows a roller element 6. In the case shown, this consists of two Roller pairs with the individual rollers 7, with the bolts 8 and the tabs 9 too be held together in one unit.
- the roller element 6 can also be another Number of rolls 7 have, for example, two, but in any case at least two Bolt 8.
- roller elements 6 are exemplary arranged side by side. It is also possible with just a single roller element 6 or a number> 2 to work.
- the roller elements 6 are represented by a middle one Guide bar 11 and two side guide bars 12 and 13 in their longitudinal direction guided.
- the guide rails 11, 12 and 13 guide the roller elements 6 on their entire circulation, also on the diversion tracks. To do this are the guide rails 11, 12 and 13 with paragraphs 11a, 12a and 13a provided in recesses 11b, 12b and 13b of the tabs 9 reach into it.
- the Tabs 9 are provided at their ends with curves 9a and 9b so that the Total length of all roller elements 6 is also retained in the deflection tracks.
- roller elements 6 can be easily replaced.
- the pull chain 1 consists of the chain links 2a, 2b etc.
- the chain links 2a, 2b are designed so that they engage in one another in an articulated manner and form a flat rear side 14 which rolls on the roller elements 6.
- the jaws 15 gripping the material to be drawn lie closely behind one another, as a result of which the drawing force can be better applied to the material to be drawn.
- the guide track 10 is passed through, so that the roller elements 6 also have a guide here.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Food-Manufacturing Devices (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
Description
Die Erfindung betrifft eine Kettenziehmaschine zum kontinuierlichen Ziehen von Stangen und Rohren mittels segmentförmiger, an zwei in einer Ebene liegenden Ziehketten synchron vorwärtsbewegter Ziehwerkzeuge, die auf starren Führungen abrollend in einer endlosen Schleife so geführt werden, daß sich jeweils gegenüberliegende Ziehwerkzeuge an das Ziehgut anpressen und dieses über Reibschluß mitnehmen, wobei die Anpreßkräfte der Ziehwerkzeuge in dem Bereich, in dem die Werkzeuge mit dem Rohr in Kontakt treten, über lasttragende Rollen abgestützt werden, die in einer endlosen Schleife zwischen der inneren Oberfläche der Zugglieder und der starren Führung mitgenommen werden.The invention relates to a chain pulling machine for the continuous pulling of Rods and tubes by means of segmental, lying on two in one plane Drawing chains of synchronously advancing drawing tools on rigid guides rolling in an endless loop so that each Press opposing drawing tools onto the drawing material and press it over Take frictional engagement, the contact pressure of the drawing tools in the area in where the tools come into contact with the pipe via load-bearing rollers are supported in an endless loop between the inner surface of the Tension members and the rigid guide can be taken.
Zum kontinuierlichen Ziehen von Stangen oder Rohren aus Metall bedient man sich unterschiedlicher Verfahren wie Trommelziehen, Geradeausziehen mit zwei Hand-an-Hand wirkenden Ziehschlitten oder endlos umlaufenden Ketten. In allen Fällen ist es erforderlich, Kräfte zum Ziehen auf das Ziehgut aufzubringen. Beim Ziehen auf einer Trommelziehmaschine wird das Ziehgut angeangelt und mit einer Zange durch den Ziehring gezogen. Bei kontinuierlich arbeitenden Geradeausziehmaschinen wird die Ziehkraft durch die Klemmwirkung von Backen an jeder beliebigen Stelle auf das Ziehgut aufgebracht. Insbesondere bei Ziehmaschinen mit umlaufenden Ziehketten muß berücksichtigt werden, daß diese Ziehketten sich bei herkömmlicher Bauweise über eine Vielzahl von Laufrollen auf einer festen Bahn abstützen, um eine gleitende Reibung zu verhindern. Üblicherweise werden dazu die Bolzen der einzelnen Kettenglieder verlängert und auf ihren beiden Enden mit Laufrollen bestückt, die auf eigenen Laufbahnen abrollen. Hierbei werden die Bolzen allerdings auf Biegung beansprucht, es können darum nur eingeschränkte Klemmkräfte übertragen werden.For the continuous pulling of bars or pipes made of metal one uses different processes such as drum pulling, straight pulling with two hand-to-hand acting slide or endless revolving chains. In all cases it is required to apply forces to the drawing material to pull. When dragging on one The drawing material is fished and drilled through the drum with a pair of pliers Draw ring pulled. With continuously operating straight pulling machines, the Pulling force due to the clamping effect of the jaws at any point on the Drawn material applied. Especially for drawing machines with rotating drawing chains it must be taken into account that these pull chains with conventional construction Support over a variety of casters on a fixed track to make a sliding one To prevent friction. Usually the bolts of the individual Chain links extended and equipped with rollers on both ends that roll on roll your own career. Here, however, the bolts are bent claimed, therefore only limited clamping forces can be transmitted.
Die EP-A-0 548 723 zeigt dagegen eine Ausführung gemäß Oberbegriff von Anspruch 1, bei der die Ziehketten mit ihren glatten Rückseiten ähnlich wie ein Wälzlager über eine sich mitbewegende Röllchenkette ablaufen. Dadurch wird die Klemmkraft unmittelbar von den Klemmbacken der Ziehkette über die Röllchen selbst auf eine feste Laufbahn übertragen. Nachteilig an dieser Ausführung ist der komplizierte Aufbau der mechanischen Teile. So muß die Röllchenkette über eigene Kettenräder geführt und umgelenkt werden. Diese Kettenräder sind durch Wälzlager lose auf den Wellen der Kettenrädern der eigentlichen Ziehkette gelagert. Auch ist es schwierig, diese Art von Kette bei Verschleiß der Röllchen in kurzer Zeit auszuwechseln.EP-A-0 548 723, on the other hand, shows an embodiment according to the preamble of claim 1, in which the pull chains with their smooth rear surfaces similar to a rolling bearing over a moving one Roll off the roller chain. As a result, the clamping force is directly from the Clamp the pull chain over the rollers themselves on a fixed track transfer. A disadvantage of this design is the complicated structure of the mechanical parts. So the roller chain must run over its own sprockets and be redirected. These sprockets are loose on the shafts of the roller bearings Sprockets of the actual pull chain stored. It is also difficult to do this type of If the rollers wear out, replace the chain in a short time.
Ziel der nachstehend beschriebenen Erfindung ist es, den mechanischen Aufwand zu vereinfachen sowie ein schnelleres Auswechseln der Röllchen zu ermöglichen.The aim of the invention described below is to reduce the mechanical effort simplify and enable faster changing of the wheels.
Dazu wird erfindungsgemäß vorgeschlagen, daß ausgehend von Stand der Technik nach den Oberbegriff von Anspruch 1 jeweils zwei an beiden Enden über Laschen miteinander verbundene, auf Bolzen gelagerte Rollen zu einem wagenartigen Rollenelement zusammengefaßt sind, von denen eine Vielzahl stirnseitig lose aneinanderliegend in einer endlosen Führungsbahn aufgenommen wird, die in der Ebene der Ziehketten umläuft und die Rollenelemente auf ihrem gesamten Umlauf und zwischen der ebenen Rückseite der Ziehkette und der starren Führung hindurch führt.For this purpose, it is proposed according to the invention that based on the prior art according to the preamble of claim 1, two at each end Brackets connected to each other, mounted on bolts to a carriage-like Roller element are summarized, of which a large number of loose ends placed next to each other in an endless guideway, which in the Level of the drawing chains revolves and the roller elements on their entire circulation and between the flat back of the drawing chain and the rigid guide.
Anstelle einer durchlaufenden Röllchenkette werden jetzt einzelne Rollenelemente angeordnet. Ein Rollenelement besteht dabei aus zwei Rollen, die jeweils über einen Bolzen beiderseitig mittels Laschen miteinander verbunden sind. Durch die Relativgeschwindigkeit zwischen umlaufender Ziehkette und stationärer Führungsbahn werden die Rollenelemente ähnlich wie bei Wälzlagern mit etwa halber Ziehkettengeschwindigkeit mitgenommen und laufen mit der Ziehkette um.Instead of a continuous roller chain, individual roller elements are now used arranged. A role element consists of two roles, each with one Bolts are connected on both sides by means of tabs. Through the Relative speed between revolving pull chain and stationary guideway the roller elements are similar to rolling bearings with about half Pull chain speed taken and run with the pull chain.
Nach einem günstigen Merkmal der Erfindung ist vorgesehen, die Führungsbahn mit seitlichen Führungsleisten zu versehen, die die Laschen der Rollenelemente auf der der Führungsbahn abgewandten Seite mindestens teilweise umgreifen. According to a favorable feature of the invention, the guideway is provided with to provide side guide strips that hold the tabs of the roller elements on the at least partially embrace the side facing away from the guideway.
Diese Führungsbahnen stellen sicher, daß sich die Rollen auf ihrer Ablaufbahn nicht verkanten, sondern die an den Triebketten angeordneten Ziehwerkzeuge rollgleitend abstützen. Die Führungsleisten umgreifen die Laschen der Rollenelemente mindestens teilweise und gewährleisten, daß die Rollenelemente von den Führungsbahnen und nicht von den Ziehketten wie beim Stand der Technik geführt werden. Würde man die Rollenelemente von den Ziehketten führen, so würden die Rollen an den ebenen Rückseiten der Ziehkette entlanglaufen, die jedoch in der Umlenkbahn ein Vieleck bildet.These guideways ensure that the rollers are not on their runway cant, but the pulling tools arranged on the drive chains are sliding support. The guide strips at least encompass the tabs of the roller elements partially and ensure that the roller elements from the guideways and are not guided by the pull chains as in the prior art. Would you Lead roller elements from the pull chains, so the rollers would be on the flat Run along the back of the drawing chain, which, however, is a polygon in the deflection path forms.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Führungsbahnen für jeweils zwei nebeneinander geführte Rolienelemente ausgebildet ist, zwischen denen eine die einander zugewandten Laschen beider Rollenelemente mindestens teilweise übergreifende Führungsleiste angeordnet ist. Die doppelte Anordnung der Rollenelemente auf die Führungsbahn ermöglicht die Aufnahme noch höherer Abstützkräfte, wobei auch in dieser Ausgestaltung eine Führung der Rollenelemente auf der gesamten Umlaufbahn durch die zusätzlich mittig angeordnete Führungsleiste gewährleistet ist.In a further embodiment of the invention it is provided that the Guideways designed for two side by side guided Rolienelemente is between which one the mutually facing tabs of both roller elements at least partially overlapping guide bar is arranged. The double Arrangement of the roller elements on the guideway still allows the recording higher support forces, with guidance in this embodiment too Roller elements on the entire orbit due to the additional center Guide bar is guaranteed.
In einer anderen Ausgestaltung der Erfindung ist vorgesehen, daß zum Ausbau der Rollenelemente mindestens eine der Führungsleisten entfernbar ist. Die Verwendung der einzelnen Rollenelemente macht auch deren Austausch im Fall von Beschädigungen leicht möglich. Während beim Stand der Technik komplette Ketten auszuwechseln waren, können jetzt einzelne Rollenelemente entfernt werden, indem erfindungsgemäß einfach eine der seitlichen Führungsleisten abgenommen wird. Der Einbau neuer Rollenelemente erfolgt in umgekehrter Reihenfolge, wobei kürzeste Rüst- bzw. Reparaturzeiten eingehalten werden können.In another embodiment of the invention it is provided that for the expansion of the Roller elements at least one of the guide strips is removable. The usage of the individual role elements also makes their exchange in the case of Damage easily possible. While in the prior art complete chains individual roll elements can now be removed by according to the invention, one of the side guide strips is simply removed. The Installation of new roller elements takes place in reverse order, the shortest Setup and repair times can be met.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, mehrere Rollen eines Rollenelementes auf einem Bolzen nebeneinander anzuordnen. Dieser Vorschlag ermöglicht die Aufnahme noch höherer Tragkräfte und die Verwendung standardisierter Rollen.In a further embodiment of the invention, several roles of one Arrange roller element side by side on a bolt. This suggestion enables the absorption of even higher load capacities and use standardized roles.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Stirnflächen der Laschen jedes Rollenelementes als Anlageflächen für benachbarte Rollenelemente abwechselnd konvex und konkav gestaltet sind, wobei die Radien der Stirnflächen entsprechend den Umlenkradien der Rollenelemente gewählt sind. Diese Ausgestaltung der Rollenelemente stellt sicher, daß die Gesamtlänge aller Rollenelemente auch in den Umlenkbahnen beibehalten wird. Die Maßnahme dient dem klemmfreien Transport der Rollenelemente auf ihrer Bahn, so daß sich diese praktisch wie eine Kette bewegen, deren Kettenelemente nicht miteinander verbunden sind.In a further embodiment of the invention it is provided that the end faces of the Tabs of each roller element as contact surfaces for adjacent roller elements are alternately convex and concave, the radii of the end faces are selected in accordance with the deflection radii of the roller elements. This Design of the roller elements ensures that the total length of all Roller elements are also retained in the deflection tracks. The measure serves the jam-free transport of the roller elements on their path, so that these move practically like a chain, the chain elements of which are not connected are.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:
- Figur 1
- einen Querschnitt durch ein Trum einer Treibkette nach der Erfindung,
- Figur 2
- ein erfindungsgemäßes Rollenelement mit zwei Rollen pro Bolzen,
Figur 3- eine Draufsicht auf erfindungsgemäße Rollenelemente in einer doppelten Führungsbahn und
- Figur 4
- eine Teilansicht einer erfindungsgemäßen Kettenziehmaschine.
- Figure 1
- a cross section through a strand of a drive chain according to the invention,
- Figure 2
- an inventive roller element with two rollers per bolt,
- Figure 3
- a plan view of roller elements according to the invention in a double track and
- Figure 4
- a partial view of a chain pulling machine according to the invention.
Die Figur 1 stellt einen Querschnitt durch ein Kettentrum dar. Die Ziehkette 1 setzt sich
aus einzelnen Kettengliedern zusammen, von denen zwei mit 2a und 2b bezeichnet
sind. Die Kettenglieder 2a und 2b sind gelenkig mit dem Bolzen 3 verbunden. An
beiden Enden des Bolzens 3 befinden sich die Laufrollen 4a und 4b, die lediglich die
Aufgabe haben, über die Antriebskettenräder 5a und 5b die Ziehkette 1 mit Zug zu
beaufschlagen.Figure 1 shows a cross section through a chain center. The pull chain 1 settles
composed of individual chain links, two of which are designated 2a and 2b
are. The
Die Fig. 2 zeigt ein Rollenelement 6. Dies besteht in dem gezeigten Fall aus zwei
Rollenpaaren mit den einzelnen Rollen 7, die mit den Bolzen 8 und den Laschen 9 zu
einer Einheit zusammengehalten werden. Das Rollenelement 6 kann auch eine andere
Anzahl von Rollen 7 haben wie zum Beispiel zwei, auf jeden Fall aber mindestens zwei
Bolzen 8. 2 shows a
Die Rollenelemente 6 liegen nach Fig. 1 zwischen der Rückseite der Ziehkette 1 und
der Führungsbahn 10. In der Fig. 1 sind beispielhaft zwei Rollenelemente 6
nebeneinander angeordnet. Es ist auch möglich, mit nur einem einzigen Rollenelement
6 oder einer Anzahl >2 zu arbeiten. Die Rollenelemente 6 werden durch eine mittlere
Führungsleiste 11 und zwei seitliche Führungsleisten 12 und 13 in ihrer Längsrichtung
geführt. Die Führungsleisten 11, 12 und 13 führen die Rollenelemente 6 auf ihrem
gesamten Umlauf, also auch auf den Umlenkbahnen. Dazu sind die Führungsleisten
11, 12 und 13 mit Absätzen 11a, 12a und 13a versehen, die in Ausnehmungen 11b,
12b und 13b der Laschen 9 hineingreifen. Hierdurch wird gewährleistet, daß die
Rollenelemente 6 in den Umlenkbahnen von den Führungsleisten 11- 13 geführt
werden und nicht von der Ziehkette 1, andernfalls würden sie an der ebenen Rückseite
14 der Ziehkette 1 entlanglaufen, die in den Umlenkbahnen ja ein Vieleck bildet. Die
Laschen 9 sind an ihren Enden mit Rundungen 9a und 9b versehen, damit die
Gesamtlänge aller Rollenelemente 6 auch in den Umlenkbahnen beibehalten wird.1 are between the rear of the drawing chain 1 and
of the
Werden die Führungsleisten 12 und/oder 13 entfernt, können die Rollenelemente 6
leicht ausgewechselt werden.If the guide strips 12 and / or 13 are removed, the
In der Figur 3 befindet sich eine Draufsicht auf die Rollenelemente 6. Es ist erkennbar,
daß die Rollenelemente 6 lose hintereinander liegen und gegen ein Verkanten durch
die Führungsleisten 11, 12 und 13 gesichert sind.
Wie die Fig. 4 zeigt, besteht die Ziehkette 1 aus den Kettengliedern 2a, 2b usw. Die
Kettenglieder 2a, 2b sind so ausgeführt, daß sie gelenkig ineinandergreifen und eine
ebene Rückseite 14 bilden, die auf den Rollenelementen 6 abrollt. Ebenso liegen die
das Ziehgut greifenden Spannbacken 15 dicht hintereinander, wodurch sich die
Ziehkraft besser auf das Ziehgut aufbringen läßt. Im Bereich der Antriebskettenräder
5a und 5b wird die Führungsbahn 10 hindurchgeführt, so daß die Rollenelemente 6
auch hier eine Führung haben. 3 shows a top view of the
As shown in FIG. 4, the pull chain 1 consists of the
- 11
- ZiehkettePull chain
- 2a2a
- KettengliedChain link
- 2b2 B
- KettengliedChain link
- 33rd
- Bolzenbolt
- 4a4a
- LaufrolleRoller
- 4b4b
- LaufrolleRoller
- 5a5a
- AntriebskettenradDrive sprocket
- 5b5b
- AntriebskettenradDrive sprocket
- 66
- RollenelementRole element
- 77
- Rollerole
- 88th
- Bolzenbolt
- 99
- LascheTab
- 9a9a
- RundungRounding
- 9b9b
- RundungRounding
- 1010th
- FührungsbahnGuideway
- 1111
- FührungsleisteGuide bar
- 11a, 12a, 13a11a, 12a, 13a
- Absatzparagraph
- 11b, 12b, 13b11b, 12b, 13b
- AusnehmungRecess
- 1212th
- FührungsleisteGuide bar
- 1313
- FührungsleisteGuide bar
- 1414
- Rückseite (der Ziehkette 1)Back (of the pull chain 1)
- 1515
- SpannbackenJaws
Claims (6)
- A chain-type drawing machine for the continuous drawing of rods and tubes by means of segment-like drawing tools (15) which are moved forwards synchronously on two drawing chains (1) lying in one plane, which tools are guided rolling on rigid guides (10) in an endless loop such that in each case opposing drawing tools press on the material being drawn and entrain it by friction, the contact pressure forces of the drawing tools in the region in which the tools come into contact with the tube are supported by means of load-bearing rollers (7) which are entrained in an endless loop between the inner surface of the drawing elements (14) and the rigid guide (10),
characterised in that
in each case two rollers (7) which are joined together at both ends via plates (9) and are mounted on journals (8) are combined to form a wagon-like roller element (6), a plurality of which are held at the ends loosely against each other in an endless guideway (10) which revolves in the plane of the drawing chains (1) and guides the roller elements (6) through their entire revolution and between the flat rear side of the drawing chain (1) and the rigid guideway (10). - A chain-type drawing machine for the continuous drawing of rods and tubes according to Claim 1, characterised in that the guideway (10) is provided with lateral guide bars (12, 13) which at least partially surround the plates (9) of the roller elements (6) on the side remote from the guideway (10).
- A chain-type drawing machine for the continuous drawing of rods and tubes according to Claims 1 and 2, characterised in that the guideway (10) is designed for two roller elements (6) guided next to each other in each case, between which a guide bar (11) which projects at least in part across the facing plates (9) of both roller elements (6).
- A chain-type drawing machine for the continuous drawing of rods and tubes according to Claims 1 to 3, characterised in that at least one of the guide bars (11, 12, 13) is removable for dismantling the roller elements (6).
- A chain-type drawing machine for the continuous drawing of rods and tubes according to Claims 1 to 4, characterised in that a plurality of rollers (7) of a roller element (6) are arranged next to one another on a journal (8).
- A chain-type drawing machine for the continuous drawing of rods and tubes according to Claims 1 to 5, characterised in that the end faces of the plates (9) of each roller element (6) are made alternately convex and concave as bearing surfaces for adjacent roller elements (6), the radii of the end faces being selected corresponding to the deflection radii of the roller elements (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19711101A DE19711101C1 (en) | 1997-03-07 | 1997-03-07 | Chain drawing machine for continuous drawing of metallic bars and pipes |
| DE19711101 | 1997-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0864382A1 EP0864382A1 (en) | 1998-09-16 |
| EP0864382B1 true EP0864382B1 (en) | 2000-10-11 |
Family
ID=7823684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98250072A Revoked EP0864382B1 (en) | 1997-03-07 | 1998-02-26 | Tool for the drawing of elongated products |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0864382B1 (en) |
| AT (1) | ATE196860T1 (en) |
| DE (2) | DE19711101C1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1310893B1 (en) * | 1999-08-26 | 2002-02-22 | Danieli Ct Maskin Spa | AUXILIARY CHAIN FOR TOWING GROUP OF DRAWING MACHINES |
| DE19947806B4 (en) * | 1999-10-05 | 2014-12-11 | Sms Meer Gmbh | Chain drawing machine for continuous drawing of drawn material |
| CN105848799B (en) * | 2014-01-03 | 2017-11-17 | 达涅利机械设备股份公司 | Intermediate chain for the stretching assembly of stretching-machine |
| DE102018111731A1 (en) | 2017-05-26 | 2018-11-29 | Sms Group Gmbh | Crawler drawing machine and drawing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3103306A (en) * | 1961-11-29 | 1963-09-10 | Crompton & Knowles Corp | Tractor-type stock feed |
| US3945547A (en) * | 1970-04-03 | 1976-03-23 | Wean United Inc. | Tractive apparatus |
| IT1252904B (en) * | 1991-12-24 | 1995-07-05 | Danieli Off Mecc | DRAWING GROUP FOR TRAFILA |
| DE69408239T2 (en) * | 1993-09-29 | 1998-08-27 | Danieli Off Mecc | Bar pulling machine |
-
1997
- 1997-03-07 DE DE19711101A patent/DE19711101C1/en not_active Expired - Fee Related
-
1998
- 1998-02-26 EP EP98250072A patent/EP0864382B1/en not_active Revoked
- 1998-02-26 AT AT98250072T patent/ATE196860T1/en not_active IP Right Cessation
- 1998-02-26 DE DE59800292T patent/DE59800292D1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| ATE196860T1 (en) | 2000-10-15 |
| DE19711101C1 (en) | 1998-04-23 |
| EP0864382A1 (en) | 1998-09-16 |
| DE59800292D1 (en) | 2000-11-16 |
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