DE3041705A1 - Continuously extruded material accurately cut to length - by revolving cutter driven by electromagnetic clutch triggered by electronic length measurement - Google Patents

Continuously extruded material accurately cut to length - by revolving cutter driven by electromagnetic clutch triggered by electronic length measurement

Info

Publication number
DE3041705A1
DE3041705A1 DE19803041705 DE3041705A DE3041705A1 DE 3041705 A1 DE3041705 A1 DE 3041705A1 DE 19803041705 DE19803041705 DE 19803041705 DE 3041705 A DE3041705 A DE 3041705A DE 3041705 A1 DE3041705 A1 DE 3041705A1
Authority
DE
Germany
Prior art keywords
length
cutting
shaft
extruded material
cutting knife
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.)
Withdrawn
Application number
DE19803041705
Other languages
German (de)
Inventor
Horst 5653 Leichlingen Pickhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19803041705 priority Critical patent/DE3041705A1/en
Publication of DE3041705A1 publication Critical patent/DE3041705A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/26—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed wherein control means on the work feed means renders the cutting member operative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0027—Cutting off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Abstract

A cutting device for cutting off equal lengths of drawn, continuously extruded material comprises a cutting knife mounted on a revolving shaft. The shaft is driven by a belt drive. Between the driven pulley and the part of the shaft carrying the revolving cutting knife (15) an electromagnetically engaged special clutch (7) is incorporated; an electronic length measuring device measures off the length of extruded material and accordingly triggers the clutch, engaging it to rotate the cutting knife through a predetermined angle. The cut is always made after an exact length of extruded material has passed through the cutting gap, regardless of the speed of movement of ths material. Thus no specal adstments to varying speeds are required.

Description

Trennvorrichtung zum Abtrennen abgezogenen Separating device for separating peeled off

extrudierten strangförmigen Gutes in gleich lange Abschnitte Die Erfindung betrifft eine Trennvorrichtung zum Abtrennen abgezogenen extrudierten strangförmigen Gutes in gleich lange Abschnitte, mit einem Trennmesser, das auf einer über einen Riementrieb angetriebenen Welle angeordnet ist. extruded strand-shaped goods into sections of equal length The invention relates to a severing device for severing withdrawn extruded strand-shaped goods in equal lengths, with a cutting knife that on a shaft driven by a belt drive is arranged.

Es ist bereits eine mit einer Längenmeßeinrichtung versehene Trennvorrichtung bekannt, deren Trennmesser an einer rotierenden Scheibe schieberartig geführt ist und zum Ausführen eines Schnittes mittels eines doppeltwirkenden Hubzylinders hin und ber beweg wird. Derartige Trennvorrichtungen haben den Nachteil, daß das extrudierte Gut mit unterschiedlicher Geschwindigkeit abgezogen wird. Dies hat zur Folge, daß die Trennvorrichtung bei jedesmaliger Änderung der Vorschubgeschwindigkeit des Gutes neu eingestellt werden muß, um gleich lange Abschnitte zu erhalten. Die jedesmalige Neueinstellung ist jedoch umständlich und nicht möglich, ohne daß bis zur Neueinstellung Abschnitte ungleicher Länge entstehen, die nicht verwendbar sind. Es staut sich ferner das Gut bei Anderung der Vorschubgeschwindigkeit vor Einlaufen in die Trennvorrichtung und bildet eine Schleife, wodurch die Trennvorrichtung in einem entsprechend großen Abstand von der Transportvorrichtung der Extrudieranlage aufgestellt werden muß. Die Extrudieranlage benötigt hierdurch einen relativ großen Aufsteliraum.It is already a separating device provided with a length measuring device known whose cutting knife is guided like a slide on a rotating disc and for making a cut by means of a double-acting lifting cylinder and about being moved. Such separation devices have the disadvantage that the extruded Well pulled off at different speeds. This has the consequence that the separating device every time the feed rate of the goods is changed must be readjusted in order to obtain sections of the same length. The every time New hire however, it is cumbersome and not possible without Until the new setting, sections of unequal length arise that cannot be used are. Furthermore, the material accumulates when the feed speed changes Enters the separator and forms a loop, creating the separator at a correspondingly large distance from the transport device of the extrusion system must be set up. As a result, the extrusion system requires a relatively large one Aufsteliraum.

Hier will die Erfindung Abhilfe schaffen.The invention aims to provide a remedy here.

Die Lösung der Aufgabe besteht erfindungsgemäß darin, da a) zwischen der drehbar auf der Welle gelagerten Lastscheibe des Riementriebs der Trennvorrichtung und dem auf der Welle fest angeordneten Trennmesser eine mit der Las-tscheibe verbundene, elektromagnetisch schaltbare Spezialkupplung angeordnet ist, b) die Spezialkupplung mit einer elektronischen Längenm#ßeinrichtung zusammenwirkt, die an einer den Transport des strangförmigen Gutes bewirkenden Transportvorrichtung angeordnet ist und die durch einen Impuls die Spezialkupplung zwecks Drehens des Trennmessers um einen vorbestimmbaren Winkelbetrag schaltet.According to the invention, the object is achieved in that a) between the load pulley of the belt drive of the cutting device, which is rotatably mounted on the shaft and the cutting knife, which is fixedly arranged on the shaft, is connected to the load disc, electromagnetically switchable special clutch is arranged, b) the special clutch cooperates with an electronic length measuring device, which is connected to the transport of the strand-like material causing transport device is arranged and the by an impulse the special coupling for the purpose of rotating the cutting knife by one predeterminable angular amount switches.

Die erfindungsgemäße Trennvorrichtung stellt sich automatisch auf die jeweilige Geschwindigkeit, mit der das strangförmige Gut der Trennvorrichtung zugeführt wird, ein, wodurch auch bei änderung der Vorschubgeschwindigkeit des strangförmigen Gutes von diesem ununterbrochen Abschnitte gleicher Länge abgetrennt werden. Da hierdurch nicht mehr wie bisher ein Stdu des strangförmigen Gutes vor Einlaufen in die Trennvorrichtung entsteht, kann die Trennvorrichtung unmittelbar an die Transportvorrichtung, beispielsweise ein Raupenabzug, angeschlossen werden bzw. mit der Transportvorrichtung eine bauliche Einheit bilden. Dies ist insofern vorteilhaft, als die gesamte Extrudieranlage wesentlich kürzer gehalten werden kann und dadurch entsprechend geringeren Aufsteliraum benötigt. Als Spezial kupplung wird in vorteilhafter Weise ein elektromagnetisch gesteuertes Kupplungs-Brems-Schaltwerk angeordnet.The separating device according to the invention is automatically set up the respective speed with which the strand-like material of the separating device is supplied, a, whereby even when changing the feed rate of the strand-shaped Good are separated from this uninterrupted sections of the same length. There As a result, there is no longer a stdu of the strand-like material before entry, as was previously the case arises in the separating device, the separating device can be attached directly to the transport device, for example a caterpillar haul-off, can be connected or with the transport device form a structural unit. This is advantageous in that the entire extrusion plant can be kept much shorter and thus correspondingly less installation space needed. An electromagnetic clutch is advantageously used as a special clutch controlled clutch-brake switchgear arranged.

Die Erfindung ist nachstehend anhand der Zeichnung näher erläutert. Es zeigt: Fig. 1 die mit einem Gehäuse versehene Trennvorrichtung ohne Gehäusedeckel in Draufsicht und Fig. 2 in Seitenansicht in Pfeilrichtung A sowie teilweise im Schnitt.The invention is explained in more detail below with reference to the drawing. It shows: FIG. 1 the separating device provided with a housing without a housing cover in plan view and FIG. 2 in side view in the direction of arrow A and partially in Cut.

Mit 1 ist das Gehäuse der Trennvorrichtung bezeichnet, in dem ein Elektromotor 2 untergebracht ist. Parallel zu der Welle 3 des Elektromotors 2 ist eine Welle 4 angeordnet. Der Antrieb der Welle 4 erfolgt durch den Elektromotor 2 über einen Riementrieb 5, dessen Lastscheibe 6 auf der Welle 4 mit einem Kugellager gelagert ist. Auf der Welle 4 ist ferner eine Kupplung 7 in Form eines bekannten und daher nicht näher beschriebenen elektromagnetisch gesteuerten Kupplungs-Brems-Schaltwerkes angeordnet.Die Kupplung 7 ist mittels eines Flansches 8 mit der Lastscheibe 6 des Riementriebs 5 fest verbunden. Mit 9 ist ein Schwungrad bezeichnet, das an der Lastscheibe 6 einerseits und dem Flansch 8 andererseits befestigt ist. Der Kupplung 7 ist ein Elektromagnet lo zugeordnet, der mit einem zweiarmigen Hebel 11 zusammenwirkt.1 with the housing of the separating device is referred to, in which a Electric motor 2 is housed. Is parallel to the shaft 3 of the electric motor 2 a shaft 4 arranged. The shaft 4 is driven by the electric motor 2 via a belt drive 5, the load pulley 6 of which on the shaft 4 with a ball bearing is stored. On the shaft 4 there is also a coupling 7 in the form of a known one and therefore not described in detail electromagnetically controlled clutch-brake switching mechanism The coupling 7 is by means of a flange 8 with the load disc 6 of the Belt drive 5 firmly connected. With a flywheel 9 is referred to, which is attached to the load disc 6 on the one hand and the flange 8 on the other hand is attached. The clutch 7 is a Associated with electromagnet lo, which cooperates with a two-armed lever 11.

Der Hebel 11 ist bei 12 gelagert und steht unter der Druckwirkung einer vorgespannten Schraubenfeder 13. Am Umfang des Gehäuses der Kupplung 7 ist ein Nocken 14 angeordnet, an dem der eine Arm des Hebels 11 anliegt. Mit 15 ist das Trennmesser der Trennvorrichtung bezeichnet, das an einem auf der Welle 4 fest angeordneten Arm 16 leicht auswechselbar befestigt ist. Mit 17 sind zwei nebeneinander angeordnete Düsen bezeichnet, in denen der Vorschub des strangförmigen Gutes erfolgt. Zwischen den Düsen 17 ist ein Spalt 18 vorgesehen. Die Trennvorrichtung bildet mit der Transportvorrichtung eine bauliche Einheit.The lever 11 is mounted at 12 and is under the pressure effect a pretensioned helical spring 13. On the circumference of the housing of the clutch 7 is a cam 14 is arranged on which one arm of the lever 11 rests. At 15 is denotes the cutting knife of the cutting device, which is fixed to one on the shaft 4 arranged arm 16 is attached easily replaceable. At 17 there are two next to each other referred to arranged nozzles in which the advancement of the strand-like material takes place. A gap 18 is provided between the nozzles 17. The separating device forms with the transport device a structural unit.

Die Wirkungsweise der Vorrichtung ist folgende.The operation of the device is as follows.

Nachdem die gewählte Länge der von dem strangförmigen Gut abzutrennenden Abschnitte an der an der Transportvorrichtung befindlichen elektronischen Längenmeßeinrichtung eingestellt worden ist, erhält der Elektromagnet lo der Kupplung 7 von der Längenmeßeinrichtung einen Wischimpuls.After the selected length of the material to be separated from the strand-like material Sections on the electronic length measuring device located on the transport device has been set, the electromagnet lo receives the clutch 7 from the length measuring device a wipe pulse.

Der Elektromagnet lo zieht hierdurch den Hebel 11 an, der sich hierbei verschwenkt und sich von dem Nocken 14 der Kupplung 7 löst. Dies hat zur Folge, daß die Kupplung 7 den sich drehenden Flansch 8 mit der Welle 4 beispielsweise für eine Umdrehung verbindet. Nach dem einen Umlauf des Trennmessers 15, das hierbei den Spalt 18 passiert und einen Abschnitt von dem strangförmigen Gut abgetrennt hat, wird der von dem Elektromagneten lo freigegebene Hebel 1 durch die Wirkung der vorher gespannten und sich nunmehr entspannenden Schraubenfeder 13 wieder in die Ausgangslage verschwenkt, wobei er sich mit #seinem einen Arm wieder an den Nocken 14 anlegt. Die Welle 4 ist hiernach erneut arretiert. Der vorgeschriebene Vorgang wiederholt sich sodann zum jedesmaligem Abtrennen eines Abschnittes von dem strangförmigen Gut.The electromagnet lo thereby pulls the lever 11, which is here pivoted and is released from the cam 14 of the clutch 7. As a consequence, that the coupling 7 the rotating flange 8 with the shaft 4 for example one turn connects. After one revolution of the cutting knife 15, this passed the gap 18 and separated a section from the strand-like material has, the lever 1 released by the electromagnet lo is due to the action the previously tensioned and now relaxing helical spring 13 again in pivoted the starting position, with one arm again to the Cam 14 applies. The shaft 4 is then locked again. The mandatory The process is then repeated each time a section is cut off the strand-like material.

Claims (1)

Patentanspruch Trennvorrichtung zum Abtrennen abgezogenen extrudierten strangförmigen Gutes in gleich lange Abschnitte, mit einem Trennmesser, das auf einer über einen Riementrieb angetriebenen Welle angeordnet ist, dadurch gekennzeichnet, daß a) zwischen der drehbar auf der Welle (4) gelagerten Lastscheibe (6) des Riementriebs (5) der Trennvorrichtung und auf dem auf der Welle (4) fest angeordneten Trennmesser (15) eine mit der Lastscheibe (6) verbundene, elektlomagnetisch schaltbare Spezial kupplung (7) angeordnet ist, b) die Spezial kupplung (7) mit einer elektronischen LängenmeJ3einrichtung zusammenwirkt, die an einer den Transport des strangförmigen Gutes bewirkenden Transportvorrichtung angeordnet ist und die durch einen Impuls die Spezialkupplung (7) zwecks Drehensdes Trennmessers (15) um einen vorbestimmbaren Winkelbetrag schaltet. Claim cutting device for cutting off peeled extruded strand-shaped goods in equal lengths, with a cutting knife that on a shaft driven via a belt drive is arranged, characterized in that that a) between the load disc (6) of the belt drive rotatably mounted on the shaft (4) (5) of the cutting device and on the cutting knife fixed on the shaft (4) (15) an electromagnetically switchable special that is connected to the load disc (6) clutch (7) is arranged, b) the special clutch (7) with an electronic LängenmeJ3einrichtung cooperates on one of the transport of the strand-shaped Good effecting transport device is arranged and by a pulse the special coupling (7) for the purpose of rotating the cutting knife (15) by a predeterminable one Angular amount switches.
DE19803041705 1980-11-05 1980-11-05 Continuously extruded material accurately cut to length - by revolving cutter driven by electromagnetic clutch triggered by electronic length measurement Withdrawn DE3041705A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803041705 DE3041705A1 (en) 1980-11-05 1980-11-05 Continuously extruded material accurately cut to length - by revolving cutter driven by electromagnetic clutch triggered by electronic length measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803041705 DE3041705A1 (en) 1980-11-05 1980-11-05 Continuously extruded material accurately cut to length - by revolving cutter driven by electromagnetic clutch triggered by electronic length measurement

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DE3041705A1 true DE3041705A1 (en) 1982-06-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585600A (en) * 1984-11-28 1986-04-29 Hercules Incorporated Extrusion, conveyance, and cutting system
US4818450A (en) * 1985-11-08 1989-04-04 Imperial Chemical Industries, Plc Apparatus and method for forming pellets
DE19520161C1 (en) * 1995-06-01 1996-10-17 Bellaform Extrusionstech Gmbh Device for cutting or slitting continuously moving, strand-like material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1255936A (en) * 1958-04-05 1961-03-17 Reifenhaueser K G Method and device for continuously cutting sections in a product moving continuously
AT220353B (en) * 1958-04-05 1962-03-26 Reifenhaeuser Kg Cutting device for cutting continuously moving strand-shaped plastic bodies
CH365531A (en) * 1958-04-05 1962-11-15 Reifenhaeuser Kg Method and device for the continuous, section-wise separation of continuously moving, strand-like structures
US3114282A (en) * 1958-04-05 1963-12-17 Reifenhauser K G Apparatus for the transverse severance of continuously moving tubular structures
DE1195474B (en) * 1962-12-07 1965-06-24 Isotube Sa Machine for the automatic cutting of tubes made of thermoplastic material produced by continuous extrusion
FR1439017A (en) * 1964-12-02 1966-05-20 Armovyl Cutting head for plastic pipes and cutting machine using this head
CH457832A (en) * 1967-08-24 1968-06-15 Schiesser Ag Rubber & Railroad Automatic machine for the precise cutting of extruded strands and hoses

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1255936A (en) * 1958-04-05 1961-03-17 Reifenhaueser K G Method and device for continuously cutting sections in a product moving continuously
AT220353B (en) * 1958-04-05 1962-03-26 Reifenhaeuser Kg Cutting device for cutting continuously moving strand-shaped plastic bodies
CH365531A (en) * 1958-04-05 1962-11-15 Reifenhaeuser Kg Method and device for the continuous, section-wise separation of continuously moving, strand-like structures
US3114282A (en) * 1958-04-05 1963-12-17 Reifenhauser K G Apparatus for the transverse severance of continuously moving tubular structures
DE1195474B (en) * 1962-12-07 1965-06-24 Isotube Sa Machine for the automatic cutting of tubes made of thermoplastic material produced by continuous extrusion
FR1439017A (en) * 1964-12-02 1966-05-20 Armovyl Cutting head for plastic pipes and cutting machine using this head
CH438692A (en) * 1964-12-02 1967-06-30 Pechiney Saint Gobain Cutting machine for plastic pipes
CH457832A (en) * 1967-08-24 1968-06-15 Schiesser Ag Rubber & Railroad Automatic machine for the precise cutting of extruded strands and hoses
US3527129A (en) * 1967-08-24 1970-09-08 Werner Hugo Schiesser Automatic apparatus for accurately cutting to size extruded lengths of solid and tubular material
DE1779538A1 (en) * 1967-08-24 1971-09-23 Schiesser Ag Rubber & Railroad Automatic machine for the precise cutting of extruded lines and hoses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585600A (en) * 1984-11-28 1986-04-29 Hercules Incorporated Extrusion, conveyance, and cutting system
US4818450A (en) * 1985-11-08 1989-04-04 Imperial Chemical Industries, Plc Apparatus and method for forming pellets
DE19520161C1 (en) * 1995-06-01 1996-10-17 Bellaform Extrusionstech Gmbh Device for cutting or slitting continuously moving, strand-like material

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