DE2003127A1 - Cutting device for cross-cutting a film web - Google Patents
Cutting device for cross-cutting a film webInfo
- Publication number
- DE2003127A1 DE2003127A1 DE19702003127 DE2003127A DE2003127A1 DE 2003127 A1 DE2003127 A1 DE 2003127A1 DE 19702003127 DE19702003127 DE 19702003127 DE 2003127 A DE2003127 A DE 2003127A DE 2003127 A1 DE2003127 A1 DE 2003127A1
- Authority
- DE
- Germany
- Prior art keywords
- knife
- cutting
- holder
- film web
- knife holder
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims description 30
- 238000004804 winding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 1
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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
- B26D1/105—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge for thin material, e.g. for sheets, strips or the like
-
- 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
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/12—Fluid-pressure means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Replacement Of Web Rolls (AREA)
Description
Schneidvorrichtung zum Querschneiden einer Folienbahn Zusatz zu Patent . ... ... (Patentanmeldung P 17 79 016.8, O.Z. 25 652) Gegenstand des Hauptpatents . ... ... (Patentanmeldung P 17 79 016.8) ist neben einem Verfahren eine Vorrichtung zum Querschneiden und Aufwickeln einer Folienbahn auf-Wickelkerne mit einer um ihre Mitte jeweils um 1800 motorisch drehbaren Wippe mit zwei Wickelkernen an ihren beiden Enden, einer Umlenkvorrichtung mit einem druckluftbetriebenen pneumatischen Zylinder und einem von dem Kolben des pneumatischen Zylinders betätigten Doppelhebel mit zwei Umlenkrollen und einem Schneidwerk, wobei als Schneidwerk oberhalb der Schwinge ein pneumatisch betätigter Doppelhebel mit einem langen und einem kurzen Arm und am Ende des. langen Armes des Doppelhebels ein pneumatisch betätigter Messerhalter sowie ein mit der Halterung des Messers verbundenes Düsenrohr mit einer Rohrverbindung zur Zufuhr von Druckluft angeordnet sind. Cutting device for cross-cutting a web of film. Addition to patent . ... ... (Patent application P 17 79 016.8, O.Z. 25 652) Subject of the main patent . ... ... (patent application P 17 79 016.8) is, in addition to a method, a device for cross-cutting and winding a web of film onto winding cores with one around theirs In the middle, each rocker can be rotated by a motorized 1800 with two winding cores on both of them Ends, a deflection device with a compressed air operated pneumatic cylinder and a double lever operated by the piston of the pneumatic cylinder two pulleys and a cutting unit, with the cutting unit above the rocker arm a pneumatically operated double lever with one long and one short arm and a pneumatically operated knife holder at the end of the long arm of the double lever as well as a nozzle pipe connected to the holder of the knife with a pipe connection are arranged for the supply of compressed air.
Es wurde nun gefunden, daß die Vorrichtung gemäß Patentanmeldung P 17 73 016.8 weiter verbessert wird, wenn der auf zwei parallel zueinander verlaufenden Stangen verschiebbar geführte, mit einem Schneidmesser versehene Messerhalter in seiner Ausgangsstellung stirnseitig gegen einen an der Antriebsstange der pneumatischen Antriebsvorrichtung angeordneten Schlagpuffer anliegt, daß mindestens eine unter elektrischer Spannung stehende Kontaktstelle vorgesehen ist, die den Messerhalter in Ausgangsstellung so abtastet, daß ein geschlossener Stromkreis entsteht, wobei der Messerhalter in dieser Stellung gehalten wird, daß mittels des Stromkreises gegebenenfalls eine Schaltvorrichtung betätigt wird, welche die Arbeitsluft ftir den kurzzeitig verlaufenden Arbeits- und Rückhub des pneumatischen Antriebes steuert und daß im Bereich der Schnitendstellung ein Rückprallpuffer angeordnet ist, gegen den der Messerhalter.It has now been found that the device according to patent application P 17 73 016.8 is further improved when the two running parallel to each other Slidably guided knife holders provided with a cutting knife in its starting position at the front against one on the drive rod of the pneumatic Drive device arranged impact buffer rests that at least one under Electrical voltage contact point is provided, which the knife holder in the initial position scans in such a way that a closed circuit is created, with the knife holder is held in this position that by means of the circuit if necessary, a switching device is actuated, which the working air for controls the brief working and return strokes of the pneumatic drive and that in the area of the cutting end position a rebound buffer arranged against which the knife holder.
nach erfolgtem Schnittvorgang aufschlägt und mittels der ihm von diesem erteilten kinetischen Energie wieder in seine Ausgangsstellung gelangt. Der Vorteil der Erfindung besteht in erster Linie darin, daß das Schnittwerkzeug infolge seines geringen Gewichtes mit hoher Geschwindigkeit abgeschossen werden kann, wofür schon kleine Antriebskräfte ausreichend sind.after the cutting process has taken place and by means of it from this given kinetic energy returns to its original position. The advantage the invention consists primarily in the fact that the cutting tool as a result of his low weight can be shot at high speed, for which already small driving forces are sufficient.
Durch die hohe Schnittgeschwindigkeit des Messers entsteht eine saubere Schnittkante quer zur Folienbahn. Weiterhin vorteilhaft ist, daß durch die hohe Schnittgeschwindigkeit es nicht erforderlich ist, die ebenfalls hohe Geschwindigkeit der Folienbahn beim Schneiden zu vermindern.The high cutting speed of the knife creates a clean Cut edge at right angles to the film web. It is also advantageous that due to the high Cutting speed is not required, which is also high speed to reduce the film web when cutting.
Eine vorteilhafte Ausgestaltung der Erfindung ist, daß als Kontakt stelle zwei Kontaktfedern vorgesehen sind. Es wird dadurch ein sicheres Anliegen der Kontaktstelle an dem sich in Ausgangsstellung befindlichen Messerhalter erreicht, wodurch gleichzeitig das Festhalten des Messerhalters in dieser Lage gewährleistet wird. Es ist weiterhin vorteilhaft, zwischen dem Schneidmesser und dem Messerhalter ein Zwischenstück vorzusehen und das ZwischenstUck und/oder das Schneidmesser unter einem Winkel quer zur Laufrichtung der Folienbahn so einstellbar anzuordnen, daß die Schnittkante des Messers gegen die Folienbahnbewegungsrichtung zeigt. Das Einstellen kann beispielsweise mittels einer Klemmvorrichtung erfolgen. Es wird dadurch ein Drücken der Folie am Messer beim Durchschneiden vermieden. Die Schrägstellung des Messers trägt somit ebenfalls zur Erreichung einer sauberen Schnittkante bei.An advantageous embodiment of the invention is that as a contact put two contact springs are provided. It makes it a safe concern reaches the contact point on the knife holder in the initial position, which at the same time ensures that the knife holder is held in this position will. It is also advantageous between the cutting knife and the knife holder to provide an intermediate piece and the intermediate piece and / or the cutting knife under at an angle transverse to the direction of travel of the film web adjustable so that the cutting edge of the knife points against the direction of travel of the film web. The setting can be done for example by means of a clamping device. It becomes a Avoid pressing the foil on the knife when cutting through. The inclination of the The knife also contributes to achieving a clean cutting edge.
Die Zeichnung veranschaulicht ein Ausfiihrungsbeispiel der Erfindung, es zeigt: Fig. 1 die Vorrichtung in der Draufsicht und Fig. 2 die Vorrichtung in der Ansicht.The drawing illustrates an exemplary embodiment of the invention, It shows: FIG. 1 the device in plan view and FIG. 2 the device in FIG the opinion.
Zwischen zwei Platten 1, 2 sind zwei parallel zueinander angeordnete Stangen 3, 4 fest angeordnet. Ein auf den Stangen 3, 4 verschiebbar geführter Messerhalter 5 mit Zwischenstück 6 und Schneidmesser 7, der sich in Ausgangsstellung befindet, liegt stirnseitig gegen einen an der Antriebsstange 8 einer pneumatischen Ant-riebsvorrichtung 9 angeordneten Schlagpuffer 10 an.Between two plates 1, 2, two are arranged parallel to one another Rods 3, 4 fixedly arranged. A knife holder slidably guided on the rods 3, 4 5 with intermediate piece 6 and cutting knife 7, which is in the starting position, lies front side against one on the drive rod 8 of a pneumatic Drive device 9 arranged impact buffer 10.
Die Antriebsstange 8 ist mit einem Kolben-Il versehen und in einem Gehäuse 12 axial verschiebbar angeordnet. Zwei an dem Gehäuse 1-2 vorgesehene Anschlüsse 13, 14 dienen für die Beaufschlagung des Kolbens 11 Je nach Erfordernis mit-Druckluft.The drive rod 8 is provided with a piston II and in one Housing 12 arranged to be axially displaceable. Two connections provided on the housing 1-2 13, 14 are used to act on the piston 11 with compressed air as required.
Der Messerhalter 5 wird -in seiner Ausgangsstellung' von zwei an der Platte 2 befestigten unter elektrischer Spannung stehenden Kontaktfedern 15, 16 gehalten. Mittels des somit vorhandenen Stromkreises kann gegebenenfalls eine Schaltvorrichtung (in der Zeichnung nicht dargestellt) betätigt werden, welche die Druckluft für den Arbeits-und Rückhub des Kolbens 11 steuert.The knife holder 5 is -in its starting position 'of two on the Plate 2 fastened contact springs 15, 16 which are under voltage held. By means of the circuit that is thus present, a switching device can optionally be used (not shown in the drawing) are operated, which the compressed air for the The working and return strokes of the piston 11 are controlled.
Ein an der Platte 1 angeordneter Rückprallpuffer 17 soll dem Messerhalter 5 nach erfolgtem Schnittvorgang eine entsprechende kinetische Energie erteilen, damit er wieder in seine Ausgangsstellung gelangt.A rebound buffer 17 arranged on the plate 1 is intended for the knife holder 5 give a corresponding kinetic energy after the cutting process has taken place, so that it comes back to its original position.
Die Vorrichtung arbeitet wie folgt: Während des Aufwickelvorganges der Folienbahn befindet sich der Messerhalter 5 in seiner Ausgangsstellung. Soll nun die Folienbahn nach einer bestimmten Zeit durchgeschnitten werden, so wird über den-Stromkreis die in der Zeichnung nicht dargestelle Schaltvorrichtung für die Druckluft betätigt. Die Druckluft gelangt zuerst durch den Anschluß 14 auf den Kolben 11. Der Kolben 11 wird dabei mit hoher Geschwindigkeit nach vorn geschobenaund gieichzeitig der Messerhalter 5, welcher über den Schlagpuffer 10, die Antriebsstange 8 direkt mit dem Kolben 11 in Verbindung steht, quer zur Folienbahn abgeschossen.The device works as follows: During the winding process of the film web, the knife holder 5 is in its starting position. Intended to now the film web will be cut after a certain time, it will be over the circuit, not shown in the drawing switching device for Compressed air actuated. The compressed air first reaches the piston through port 14 11. The piston 11 is pushed forward at high speed and at the same time the knife holder 5, which via the impact buffer 10, the drive rod 8 directly is in communication with the piston 11, shot transversely to the film web.
Der Kolben 11 wird mittels Druckluft, welche durch den Anschluß auf den Kolben 11 gelangt, sofort wieder in seine ursprüngliche Stellung zurückgebracht. Der Messerhalter 5 trifft anschließend nach erfolgtem Schnittvorgang auf den Rückprallpuffer 17 auf und gelangt mittels der ihm von diesem erteilten kinetischen Energie in seine Ausgangsstellung zurück.The piston 11 is by means of compressed air, which through the connection on reaches the piston 11, immediately returned to its original position. The knife holder 5 then hits the rebound buffer after the cutting process has taken place 17 and gets into his by means of the kinetic energy given to him by him Starting position back.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702003127 DE2003127C3 (en) | 1970-01-24 | Device for cross-cutting and winding a film web |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702003127 DE2003127C3 (en) | 1970-01-24 | Device for cross-cutting and winding a film web |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2003127A1 true DE2003127A1 (en) | 1971-07-29 |
| DE2003127B2 DE2003127B2 (en) | 1976-07-01 |
| DE2003127C3 DE2003127C3 (en) | 1977-02-10 |
Family
ID=
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098155A (en) * | 1976-09-17 | 1978-07-04 | The Fletcher-Terry Company | Self-compensating scoring head |
| FR2594738A1 (en) * | 1986-02-24 | 1987-08-28 | Waertsilae Oy Ab | MEANS FOR CUTTING PAPER STRIP |
| DE19654408A1 (en) * | 1996-12-24 | 1998-06-25 | Continental Ag | Process for cutting an unvulcanized rubber profile to size using a cutting edge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098155A (en) * | 1976-09-17 | 1978-07-04 | The Fletcher-Terry Company | Self-compensating scoring head |
| FR2594738A1 (en) * | 1986-02-24 | 1987-08-28 | Waertsilae Oy Ab | MEANS FOR CUTTING PAPER STRIP |
| DE19654408A1 (en) * | 1996-12-24 | 1998-06-25 | Continental Ag | Process for cutting an unvulcanized rubber profile to size using a cutting edge |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2003127B2 (en) | 1976-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHV | Ceased/renunciation |