EP0360984B1 - Loading device for a drawing system, especially for a draw frame - Google Patents
Loading device for a drawing system, especially for a draw frame Download PDFInfo
- Publication number
- EP0360984B1 EP0360984B1 EP89111511A EP89111511A EP0360984B1 EP 0360984 B1 EP0360984 B1 EP 0360984B1 EP 89111511 A EP89111511 A EP 89111511A EP 89111511 A EP89111511 A EP 89111511A EP 0360984 B1 EP0360984 B1 EP 0360984B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loading device
- loading
- roll
- top roll
- rolls
- 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.)
- Expired - Lifetime
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Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/46—Loading arrangements
- D01H5/52—Loading arrangements using fluid pressure
- D01H5/525—Loading arrangements using fluid pressure for top roller arms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/46—Loading arrangements
Definitions
- the invention relates to a loading device for a drafting system of a spinning machine, in particular a draw frame, with lower rollers arranged stationary in punches and with upper rollers held by pressure arms, to which loading means are assigned with which they can be pressed against the associated lower rollers.
- the invention has for its object to design a loading device of the type mentioned in such a way that the pressure arms and / or a locking device holding them in the operating position can be carried out more easily.
- This object is achieved in that the loading means for at least one top roller are attached to the punches and can be brought into engagement with the associated top roller when the pressure arms are closed.
- pressure elements are provided as the load means, the movement of which can be transferred to the associated upper roller by means of transmission elements as a pulling movement that is applied to the lower roller. This ensures that the loading means can be arranged and designed so that they have no significant height in the direction of the top rollers and the pressure arms.
- the loading means are attached to holding devices which can be rotated concentrically to the associated lower roller and which are provided with a guide for the associated upper roller.
- This configuration ensures that the loading means are always aligned exactly with the top roller in the specified manner, since the top roller is aligned with the component to which the loading device is also attached.
- Such loading devices are particularly suitable for adjustable top rollers, i.e. Top rollers that can be adjusted concentrically around the associated bottom roller to adjust the stretching field length.
- the transmission elements automatically contain means releasing the top roller when the load is removed. This ensures that the swiveling of the pressure arms with an upper roller is not hindered after relieving the load.
- Fig. 1 shows a section of a drafting system in the area of a punch (10).
- the drafting system itself consists, for example, of three driven lower rollers, which are stationary and are mounted in two lateral punches, of which only one lower roller (11) is shown. At least three top rollers, of which only the top roller (13) is shown, are assigned to these bottom rollers, which form a pre-drafting field and a main drafting field with the bottom rollers.
- an upper roller in the area of the pre-drafting field and an upper roller, for example the illustrated top roller (13) of the main drafting field can be adjusted in the circumferential direction of the associated bottom roller (11).
- the lower roller (11) is mounted with bearings (30) in a cylindrical extension (28) of a holding device (18) which is held rotatably in the punch (10) with this cylindrical extension (28).
- the holding device (18) On the side facing away from the punch (10), the holding device (18) is provided with a further extension (23) which has a rectangular cross section.
- a pressure element (14) in the form of a hydraulic or pneumatic press serving as a load means is attached to this approach. This press (14) is arranged so that its piston executes an extension movement in the direction of the lower roller (11) and the upper roller (13).
- the piston rod (24) of the press (14) engages in a bolt-shaped transverse clasp (15) of a bracket, which is completed by two side straps (16) and a locking bolt (17) attached to the other end of the side straps (16).
- a hook-shaped end (31) of the axis (29) of the upper roller (13) is assigned to the locking bolt (17).
- the locking bolt (17) hooks into the hook-shaped end (31) when the piston (24) is extended so that the press (14) Upper roller (13) clamped against the lower roller (11).
- This hanging movement of the locking bolt (17) takes place automatically. It is controlled by a link guide which is formed from guide pins (20) attached to the tabs (16) and a link (21) attached in each case to the side cheeks of the attachment (23). As can be seen from FIG.
- the link (21) has a section running in the extension direction of the piston (24), ie a section running radially to the lower roll (11) and to the upper roll (13). It also has an obliquely outwardly directed portion in which the guide pins (20) are located when the piston (24) is retracted.
- the holding device (18) is also provided with a slot-shaped guide (19) into which the axis (29) of the top roller, which has an essentially rectangular cross section, engages when the pressure arms (12) are closed.
- the upper roller (13) is fastened to the pressure arms (12) by means of brackets (26) which act on its axis (29) and which are elastically flexible transversely to the guide (19).
- the holders (26) are guided with bolts (27) in a slot guide (25) which, when the pressure arms (12) are closed, runs concentrically with the lower roller (11).
- top rollers are arranged in a common pressure arm on each side.
- the upper rollers in particular the adjustable upper rollers, are held on the punch with their own pressure arms, a common arm being provided which then brings the separate pivoting devices into the operating position.
- the separate pressure arms can then also be attached to the holding device (18), so that an assembly is formed which can be adjusted as a whole.
- top rollers of a drafting system it is not necessary for all top rollers of a drafting system to have a loading device accordingly of the present invention. For reasons of space, it may be appropriate to alternately provide loading devices for the upper rollers, which are attached to the punches (10) or the pressure arms (12).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die Erfindung betrifft eine Belastungseinrichtung für ein Streckwerk einer Spinnereimaschine, insbesondere einer Strecke, mit stationär in Stanzen angeordneten Unterwalzen und mit von Druckarmen gehaltenen Oberwalzen, denen Belastungsmittel zugeordnet sind, mit denen sie gegen die zugehörigen Unterwalzen anpreßbar sind.The invention relates to a loading device for a drafting system of a spinning machine, in particular a draw frame, with lower rollers arranged stationary in punches and with upper rollers held by pressure arms, to which loading means are assigned with which they can be pressed against the associated lower rollers.
Es ist bekannt (EP-B 0 062 185), die Belastungsmittel in die Halterungen zu integrieren, mit welchen die Oberwalzen an Druckarmen gehalten sind. Die Gegenkräfte müssen somit von den Druckarmen selbst und von der Verriegelung aufgenommen werden, mit welcher die Druckarme an den Stanzen in der Betriebsstellung verriegelt werden.It is known (EP-B 0 062 185) to integrate the load means into the holders with which the top rollers are held on pressure arms. The opposing forces must therefore be absorbed by the pressure arms themselves and by the lock with which the pressure arms are locked on the punches in the operating position.
Der Erfindung liegt die Aufgabe zugrunde, eine Belastungseinrichtung der eingangs genannten Art so auszubilden, daß die Druckarme und/oder eine sie in der Betriebsposition haltende Verriegelung leichter ausgeführt werden können.The invention has for its object to design a loading device of the type mentioned in such a way that the pressure arms and / or a locking device holding them in the operating position can be carried out more easily.
Diese Aufgabe wird dadurch gelöst, daß die Belastungsmittel für wenigstens eine Oberwalze an den Stanzen angebracht und bei geschlossenen Druckarmen mit der zugehörigen Oberwalze in Eingriff bringbar sind.This object is achieved in that the loading means for at least one top roller are attached to the punches and can be brought into engagement with the associated top roller when the pressure arms are closed.
Durch diese Ausbildung werden die Druckarme selbst von Gegenkräften entlastet, während die Verriegelung unterstützt wird.With this design, the pressure arms themselves are relieved of counter forces, while the locking is supported.
In weiterer Ausgestaltung der Erfindung sind als Belastungsmittel Druckelemente vorgesehen, deren Bewegung mittels Übertragungselementen als an die Unterwalze heranziehende Zugbewegung auf die zugehörige Oberwalze übertragbar ist. Dadurch wird erreicht, daß die Belastungsmittel so angeordnet und ausgebildet werden können, daß sie keine nennenswerte Bauhöhe in Richtung zu den Oberwalzen und den Druckarmen hin aufweisen.In a further embodiment of the invention, pressure elements are provided as the load means, the movement of which can be transferred to the associated upper roller by means of transmission elements as a pulling movement that is applied to the lower roller. This ensures that the loading means can be arranged and designed so that they have no significant height in the direction of the top rollers and the pressure arms.
In weiterer Ausgestaltung der Erfindung wird vorgesehen, daß die Belastungsmittel an konzentrisch zu der zugehörigen Unterwalze verdrehbaren Halteeinrichtungen angebracht sind, die mit einer Führung für die zugehörige Oberwalze versehen sind. Durch diese Ausbildung wird sichergestellt, daß die Belastungsmittel immer exakt in der vorgegebenen Weise zu der Oberwalze ausgerichtet sind, da die Oberwalze an dem Bauteil ausgerichtet wird, an welchem auch die Belastungseinrichtung angebracht ist. Derartige Belastungseinrichtungen eignen sich insbesondere für verstellbare Oberwalzen, d.h. Oberwalzen, die zur Einstellung der Streckfeldlänge konzentrisch um die zugehörige Unterwalze verstellbar sind.In a further embodiment of the invention it is provided that the loading means are attached to holding devices which can be rotated concentrically to the associated lower roller and which are provided with a guide for the associated upper roller. This configuration ensures that the loading means are always aligned exactly with the top roller in the specified manner, since the top roller is aligned with the component to which the loading device is also attached. Such loading devices are particularly suitable for adjustable top rollers, i.e. Top rollers that can be adjusted concentrically around the associated bottom roller to adjust the stretching field length.
In weiterer Ausgestaltung der Erfindung wird vorgesehen, daß die Übertragungselemente selbsttätig beim Entlasten die Oberwalze freigebende Mittel enthalten. Damit wird erreicht, daß nach Entlasten der Belastungsmittel das Abschwenken der Druckarme mit einer Oberwalze nicht behindert ist.In a further embodiment of the invention, it is provided that the transmission elements automatically contain means releasing the top roller when the load is removed. This ensures that the swiveling of the pressure arms with an upper roller is not hindered after relieving the load.
Weitere Merkmale und vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer Ausführungsform und den Unteransprüchen.
- Fig. 1
- zeigt einen Schnitt durch eine Stanze, in der eine Unterwalze gelagert ist, an die eine Oberwalze mittels einer Belastungseinrichtung herangezogen wird, und
- Fig. 2
- eine Ansicht auf die Belastungseinrichtung der Fig. 1 in Richtung des Pfeiles II gesehen.
- Fig. 1
- shows a section through a punch, in which a lower roller is mounted, to which an upper roller is pulled by means of a loading device, and
- Fig. 2
- a view of the loading device of FIG. 1 seen in the direction of arrow II.
Fig. 1 zeigt einen Ausschnitt eines Streckwerkes im Bereich einer Stanze (10). Das Streckwerk selbst besteht beispielsweise aus drei stationär in zwei seitlichen Stanzen gelagerten, angetriebenen Unterwalzen, von denen nur eine Unterwalze (11) dargestellt ist. Diesen Unterwalzen sind wenigstens drei Oberwalzen, von denen nur die Oberwalze (13) dargestellt ist, zugeordnet, die ein Vorverzugsfeld und ein Hauptverzugsfeld mit den Unterwalzen bilden. Zur Einstellung der Streckfeldlänge ist eine Oberwalze im Bereich des Vorverzugsfeldes und eine Oberwalze, beispielsweise die dargestellte Oberwalze (13) des Hauptverzugsfeldes in Umfangsrichtung der zugehörigen Unterwalze (11) verstellbar.Fig. 1 shows a section of a drafting system in the area of a punch (10). The drafting system itself consists, for example, of three driven lower rollers, which are stationary and are mounted in two lateral punches, of which only one lower roller (11) is shown. At least three top rollers, of which only the top roller (13) is shown, are assigned to these bottom rollers, which form a pre-drafting field and a main drafting field with the bottom rollers. To set the stretching field length, an upper roller in the area of the pre-drafting field and an upper roller, for example the illustrated top roller (13) of the main drafting field, can be adjusted in the circumferential direction of the associated bottom roller (11).
Die Unterwalze (11) ist mit Lagern (30) in einem zylindrischen Ansatz (28) einer Halteeinrichtung (18) gelagert, die mit diesem zylindrischen Ansatz (28) verdrehbar in der Stanze (10) gehalten ist. Auf der der Stanze (10) abgewandten Seite ist die Halteeinrichtung (18) mit einem weiteren Ansatz (23) versehen, der einen rechteckigen Querschnitt aufweist. An diesem Ansatz ist ein als Belastungsmittel dienendes Druckelement (14) in Form einer hydraulischen oder pneuamtischen Presse befestigt. Diese Presse (14) ist so angeordnet, daß ihr Kolben eine Ausfahrbewegung in Richtung von der Unterwalze (11) und der Oberwalze (13) hinweg ausführt.The lower roller (11) is mounted with bearings (30) in a cylindrical extension (28) of a holding device (18) which is held rotatably in the punch (10) with this cylindrical extension (28). On the side facing away from the punch (10), the holding device (18) is provided with a further extension (23) which has a rectangular cross section. A pressure element (14) in the form of a hydraulic or pneumatic press serving as a load means is attached to this approach. This press (14) is arranged so that its piston executes an extension movement in the direction of the lower roller (11) and the upper roller (13).
Die Kolbenstange (24) der Presse (14) greift in eine bolzenförmige Querspange (15) eines Bügels ein, der durch zwei Seitenlaschen (16) und einen an dem anderen Ende der Seitenlaschen (16) befestigten Verriegelungsbolzen (17) vervollständigt wird. Dem Verriegelungsbolzen (17) ist ein hakenförmiges Ende (31) der Achse (29) der Oberwalze (13) zugeordnet. Der Verriegelungsbolzen (17) hängt sich in das hakenförmige Ende (31) ein, wenn der Kolben (24) ausgefahren wird, so daß die Presse (14) die Oberwalze (13) gegen die Unterwalze (11) verspannt. Diese Einhängbewegung des Verriegelungsbolzens (17) erfolgt selbsttätig. Sie wird durch eine Kulissenführung gesteuert, die aus an den Laschen (16) angebrachten Führungsstiften (20) und jeweils einer in den Seitenwangen des Ansatzes (23) angebrachten Kulisse (21) gebildet wird. Wie aus Fig. 1 zu ersehen ist, besitzt die Kulisse (21) einen in Ausfahrrichtung des Kolbens (24) verlaufenden Abschnitt, d.h. einen radial zur Unterwalze (11) und zur Oberwalze (13) verlaufenden Abschnitt. Außerdem besitzt sie einen schräg dazu nach außen gerichteten Abschnitt, in welchem sich die Führungsstifte (20) befinden, wenn der Kolben (24) zurückgezogen ist.The piston rod (24) of the press (14) engages in a bolt-shaped transverse clasp (15) of a bracket, which is completed by two side straps (16) and a locking bolt (17) attached to the other end of the side straps (16). A hook-shaped end (31) of the axis (29) of the upper roller (13) is assigned to the locking bolt (17). The locking bolt (17) hooks into the hook-shaped end (31) when the piston (24) is extended so that the press (14) Upper roller (13) clamped against the lower roller (11). This hanging movement of the locking bolt (17) takes place automatically. It is controlled by a link guide which is formed from guide pins (20) attached to the tabs (16) and a link (21) attached in each case to the side cheeks of the attachment (23). As can be seen from FIG. 1, the link (21) has a section running in the extension direction of the piston (24), ie a section running radially to the lower roll (11) and to the upper roll (13). It also has an obliquely outwardly directed portion in which the guide pins (20) are located when the piston (24) is retracted.
Die Halteeinrichtung (18) ist außerdem mit einer schlitzförmigen Führung (19) versehen, in welche die einen im wesentlichen rechteckigen Querschnitt aufweisende Achse (29) der Oberwalze beim Schließen der Druckarme (12) eingreift. Die Oberwalze (13) ist mittels an ihrer Achse (29) angreifenden, quer zur Führung (19) elastisch nachgiebigen Haltern (26) an den Druckarmen (12) befestigt. Die Halter (26) sind mit Bolzen (27) in einer Schlitzführung (25) geführt, die, bei geschlossenen Druckarmen (12), konzentrisch zu der Unterwalze (11) verläuft.The holding device (18) is also provided with a slot-shaped guide (19) into which the axis (29) of the top roller, which has an essentially rectangular cross section, engages when the pressure arms (12) are closed. The upper roller (13) is fastened to the pressure arms (12) by means of brackets (26) which act on its axis (29) and which are elastically flexible transversely to the guide (19). The holders (26) are guided with bolts (27) in a slot guide (25) which, when the pressure arms (12) are closed, runs concentrically with the lower roller (11).
Es ist nicht unbedingt notwendig, daß alle Oberwalzen auf jeder Seite in einem gemeinsamen Druckarm angeordnet sind. Bei einer abgewandelten Ausführungsform wird vorgesehen, daß die Oberwalzen, insbesondere die verstellbaren Oberwalzen mit eigenen Druckarmen an der Stanze gehalten sind, wobei ein gemeinsamer Arm vorgesehen ist, der dann die separaten Schwenkeinrichtungen in die Betriebsstellung bringt. In diesem Fall können die separaten Druckarme dann auch an der Halteeinrichtung (18) mit angebracht werden, so daß eine Baugruppe gebildet wird, die insgesamt verstellt werden kann.It is not absolutely necessary that all top rollers are arranged in a common pressure arm on each side. In a modified embodiment it is provided that the upper rollers, in particular the adjustable upper rollers, are held on the punch with their own pressure arms, a common arm being provided which then brings the separate pivoting devices into the operating position. In this case, the separate pressure arms can then also be attached to the holding device (18), so that an assembly is formed which can be adjusted as a whole.
Selbstverständlich ist es nicht notwendig, daß alle Oberwalzen eines Streckwerkes mit einer Belastungseinrichtung entsprechend der vorliegenden Erfindung versehen werden. Aus Raumgründen kann es sich anbieten, abwechselnd für die Oberwalzen Belastungseinrichtungen vorzusehen, die an den Stanzen (10) oder den Druckarmen (12) angebracht sind.Of course, it is not necessary for all top rollers of a drafting system to have a loading device accordingly of the present invention. For reasons of space, it may be appropriate to alternately provide loading devices for the upper rollers, which are attached to the punches (10) or the pressure arms (12).
Claims (7)
- Loading device for a drawing system of a spinning machine, especially for a draw frame, with bottom rolls arranged stationarily in punches and top rolls held in pressure arms, the top rolls having associated to them loading means by means of which they can be pressed against the mating bottom rolls, wherein the loading means (14) for at least one top roll (13) are mounted on the punches (10) and can be brought into engagement with the mating top roll (13) when the pressure arms (12) are in the closed position.
- Loading device according to claim 1, wherein pressure elements (14) are provided as loading means, whose movement can be transferred to the associated top roll (13) by means of transmission elements (15, 16, 17), as pulling movement directed toward the bottom roll (11).
- Loading device according to claim 1 or 2, wherein the loading means (14) are mounted on holding devices (18) that can be rotated concentrically with respect to the associated bottom roll (11) and that are provided with guide means (19) for the associated top roll (13).
- Loading device according to any of claims 1 to 3, wherein the transmission elements (15, 16, 17) comprise means which release the top roll (13) automatically when unloading occurs.
- Loading device according to any of claims 1 to 4, wherein each of the holding devices (18) comprises a projection (23) carrying a pressure element (14) whose piston acts upon the crossbar (15) of a strap (16, 17) that can be attached to the top roll (13).
- Loading device according to claim 4 or 5, wherein the strap (16, 17) is supported for pivotal movement about the end of the piston (24) and is guided by means of a connecting link guide (20, 21) which comprises one section extending transversely to the shaft of the bottom roll (11), and one section extending obliquely to the latter and in outward direction.
- Loading device according to any of claims 1 to 6, wherein the top roll (13) is held in resiliently yielding holding means (26) that extend transversely to the guide (19) of the holding device (18).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3832061 | 1988-09-21 | ||
DE3832061A DE3832061A1 (en) | 1988-09-21 | 1988-09-21 | LOADING DEVICE FOR A LINE, IN PARTICULAR A LINE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0360984A1 EP0360984A1 (en) | 1990-04-04 |
EP0360984B1 true EP0360984B1 (en) | 1993-10-27 |
Family
ID=6363411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89111511A Expired - Lifetime EP0360984B1 (en) | 1988-09-21 | 1989-06-24 | Loading device for a drawing system, especially for a draw frame |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0360984B1 (en) |
JP (1) | JPH0299621A (en) |
DE (2) | DE3832061A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1376399A (en) * | 1963-08-31 | 1964-10-23 | Tematex S A S Di E Reynaud & C | Apparatus for applying a determined pressure to the rolls of textile machines, particularly spinning preparation machines |
US3606646A (en) * | 1969-08-28 | 1971-09-21 | Maremont Corp | Drafting roll weighting mechanism |
EP0062185B2 (en) * | 1981-04-06 | 1991-02-27 | Maschinenfabrik Rieter Ag | Device for drafting a roving in spinning machines |
JPS5915520A (en) * | 1982-07-15 | 1984-01-26 | Toyoda Autom Loom Works Ltd | Roll pressurizing apparatus in drafting mechanism |
-
1988
- 1988-09-21 DE DE3832061A patent/DE3832061A1/en not_active Withdrawn
-
1989
- 1989-06-24 DE DE89111511T patent/DE58906015D1/en not_active Expired - Fee Related
- 1989-06-24 EP EP89111511A patent/EP0360984B1/en not_active Expired - Lifetime
- 1989-08-18 JP JP1211554A patent/JPH0299621A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH0299621A (en) | 1990-04-11 |
DE3832061A1 (en) | 1990-03-22 |
EP0360984A1 (en) | 1990-04-04 |
DE58906015D1 (en) | 1993-12-02 |
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