EP0220341B1 - Appareil pour couper les panneaux à nervures - Google Patents

Appareil pour couper les panneaux à nervures Download PDF

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Publication number
EP0220341B1
EP0220341B1 EP85201759A EP85201759A EP0220341B1 EP 0220341 B1 EP0220341 B1 EP 0220341B1 EP 85201759 A EP85201759 A EP 85201759A EP 85201759 A EP85201759 A EP 85201759A EP 0220341 B1 EP0220341 B1 EP 0220341B1
Authority
EP
European Patent Office
Prior art keywords
knife
cut
severing
strand
strutted
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
Application number
EP85201759A
Other languages
German (de)
English (en)
Other versions
EP0220341A1 (fr
Inventor
Alexander General Electric Plastics Hoekstra
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to AT85201759T priority Critical patent/ATE36132T1/de
Priority to EP85201759A priority patent/EP0220341B1/fr
Priority to DE8585201759T priority patent/DE3564087D1/de
Publication of EP0220341A1 publication Critical patent/EP0220341A1/fr
Application granted granted Critical
Publication of EP0220341B1 publication Critical patent/EP0220341B1/fr
Expired legal-status Critical Current

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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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/60—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/10—Means for treating work or cutting member to facilitate cutting by heating

Definitions

  • the invention relates to a device for separating freshly extruded strands from multi-skin sheets, in which supporting air is introduced into the cavities of the strand, which has a heatable knife as a separating element, the knife being held and adjustable in a slide that can be moved in a guide is.
  • Multi-wall sheets consist of two or more cover surfaces spaced parallel to one another and possibly intermediate surfaces and in each case parallel webs connecting the surfaces to one another. Such multi-wall sheets can be produced economically in the extrusion process.
  • the invention offers a solution to this problem.
  • the supporting air can also be discharged undisturbed when the web plates are separated.
  • the device according to the invention is characterized in that the area of the area of the knife penetrating into the multi-wall sheet to be cut is smaller in the cutting direction than the area circumscribed by the edge areas of a cavity.
  • the free end of the knife is inclined. preferably at an angle of 40-50 ° to the cutting edge.
  • the knife can be made relatively wide, as a result of which the knife is correspondingly stable.
  • the bevelled free end of the knife which generally only penetrates the strand to be cut with its free end area, ensures that only a part of each cavity is covered by the knife during cutting, which means that the supporting air also during cutting of the strand can flow out.
  • the angle of 40-50 ° between the free end of the knife and its cutting edge represents a favorable compromise between a narrow design of the area of the knife penetrating into the strand to be cut and its stability.
  • At least one end of the movement path of the knife has a heatable chamber into which the knife can be inserted.
  • This solution is particularly suitable for making cuts with rather shorter cut lengths, between which only relatively short breaks remain. This results in a particularly simple construction of the knife, which can be solid and therefore a high degree of stability can be achieved.
  • the knife for heating can be accommodated in a circuit, a controller controlling the circuit being provided.
  • the controller is influenced by a sensor for detecting the length of the extruded strand in order to determine the interface.
  • the granulate passes from the storage container 1 into a dryer 2 and from there to an extruder 3, where it is plasticized.
  • the plasticized mass exits through an extrusion die 4 which corresponds to the shape of the multi-wall sheet to be produced.
  • This extrusion nozzle 4 is supplied with air via a line 5, which is blown into the cavities of the multi-wall sheet and supports the two webs of each individual cavity and prevents the two webs from collapsing.
  • This extruded strand is brought to the intended size in the calibrator 6 in a known manner and is brought to a continuous furnace 8 and further to a laminating station 9 by means of conveyor rollers 7.
  • the extruded strand 12 then arrives at the cutting device 10, after which the separated parts or plates are transported away by means of a conveyor belt 11.
  • the cutting device 10 consists of a guide 13 on which a carriage 14 can be moved.
  • the carriage is driven by means of a chain drive 15, to which the carriage 14 is connected and which is connected to a motor 30.
  • a support plate 16 is held adjustable and lockable.
  • the knife 17 is fastened on this support plate 16.
  • the guide 13 and the chain drive 15, 30 are held in a support 33, which is height-adjustable on a slide 32 by means of a stamp 31, which slide 32 on guides 34 in Longitudinal direction of the table 22 and thus the strand 12 can be moved.
  • This carriage 32 carries a motor 36 driving a pinion 35 which meshes with a toothed rack 37, as a result of which the carriage 32 can be driven reversibly.
  • the carriage 32 When cutting, the carriage 32 is moved transversely to the strand at the speed of the strand 12 in the feed direction thereof during the movement of the knife 17.
  • the bar 39 is lowered in the direction of the arrow 40 onto the strand 12 in order to prevent the strand from being lifted off the table 22.
  • the support 33 and thus the knife 17 are lowered below the upper edge of the table 22 and the carriage 32 is moved back to the starting point against the direction of advance of the strand.
  • the support 33 is raised again and the carriage 14 is moved transversely to the strand 12 by means of the chain drive 15 with simultaneous movement of the carriage 32 in the direction of advance of the strand 12.
  • the dimension of the slot 38 in the table 22 is dimensioned such that its width exceeds the feed of the strand during a cut.
  • the knife 17 is chamfered at its free end and has a slot 18.
  • the legs 19 of the knife 17 separated by this slot 18 are connected to a circuit which provides for the heating of the knife, this circuit being controlled by a controller (not shown).
  • the power supply to the knife 17 takes place via a cable 20 which is pulled out of a winding device 21 and wound up again by the latter, the cable being held under tension.
  • the free end region of the knife 17 projects through the slot 38 in the table 22 on which guides 23 for the strand 12 are arranged. The knife only cuts the strand 12 with its outermost end region.
  • the knife 17 covers an area which is substantially smaller than the cross section of the individual cavities 24 of the strand 12 or its area in the cutting plane, so that the supporting air can also escape from the cavities during the cut. However, this avoids an increase in pressure in the cavities 24 during the cut and thus also prevents the cavities in the area of the calibrator 6 from inflating.
  • the slot 18 formed in the knife 17 can be raised so far in the direction of the cutting edge that it reaches almost to the underside of the web plate to be cut. This has the advantage that optimal heating of the cutting edge is ensured over its entire length. In order to ensure that the supporting air exits safely with a relatively small cross-sectional width of the individual cavities 24 of a strand, the slot 18 can also be drawn up over the support edge in the direction of the cutting edge, so that when cutting supporting air from the narrow channels, which are otherwise covered by the knife width could emerge from the individual cavities 24.
  • the regulator of the circuit for heating the knife expediently works in such a way that the knife 17 is kept at the required cutting temperature of approx. 200 ° to 300 ° C. (for polycarbonate) by the passage of current, the current during each cut due to the increased Heat dissipation is increased.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Details Of Cutting Devices (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (4)

1. Appareil pour couper des boudins de panneaux (12) à nervures fraîchement extrudés, dans lesquels de l'air de stabilisation est insufflé dans les cavités (24) du boudin, présentant, en tant qu'élément séparateur, une lame aplatie (17) pouvant être chauffée, cette lame (17) étant retenue, avec facultéde réglageetde blocage, dans un coulisseau (14) mobile dans un système de guidage (13), caractérisé par le fait que la surface de la zone de la lame (17) pénétrant dans le panneau (12) à nervures devant être coupé est plus petite, considérée dans la direction de coupe, que la surface circonscrite par les régions marginales d'une cavité (24).
2. Appareil selon la revendication 1, caractérisé par le fait que l'extrémité libre de la lame (17) s'étend à l'oblique, de préférence selon un angle de 40-50° par rapport au tranchant.
3. Appareil selon la revendication 1, caractérisé par le fait qu'un compartiment pouvant être chauffé, dans lequel la lame peut pénétrer par coulissement, est disposé à au moins une extrémité du trajet de mouvement de ladite lame (17).
4. Appareil selon la revendication 1, dans lequel la lame est branchée dans un circuit électrique en vue de son chauffage, et il est prévu un régulateur commandant le circuit électrique.
EP85201759A 1985-10-30 1985-10-30 Appareil pour couper les panneaux à nervures Expired EP0220341B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT85201759T ATE36132T1 (de) 1985-10-30 1985-10-30 Vorrichtung zum trennen von stegplatten.
EP85201759A EP0220341B1 (fr) 1985-10-30 1985-10-30 Appareil pour couper les panneaux à nervures
DE8585201759T DE3564087D1 (en) 1985-10-30 1985-10-30 Device for severing ribbed boards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85201759A EP0220341B1 (fr) 1985-10-30 1985-10-30 Appareil pour couper les panneaux à nervures

Publications (2)

Publication Number Publication Date
EP0220341A1 EP0220341A1 (fr) 1987-05-06
EP0220341B1 true EP0220341B1 (fr) 1988-08-03

Family

ID=8194073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201759A Expired EP0220341B1 (fr) 1985-10-30 1985-10-30 Appareil pour couper les panneaux à nervures

Country Status (3)

Country Link
EP (1) EP0220341B1 (fr)
AT (1) ATE36132T1 (fr)
DE (1) DE3564087D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615433B1 (fr) * 1987-05-19 1994-08-05 Kaysersberg Sa Dispositif de decoupe de plaques alveolaires en materiau thermoplastique
DE4244632C1 (de) * 1992-12-30 1994-06-23 Meier Harald Consulting Werkzeug zum Einformen einer Nut in eine für eine Antriebswelle vorgesehene Aufnahme einer Bandkassette
IT1316935B1 (it) * 2000-10-05 2003-05-13 Kemac Srl Taglierina per estrusi.
GB2382321A (en) * 2001-11-21 2003-05-28 Doyen Medipharm Ltd Process and apparatus for cutting sheets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293721A (en) * 1941-08-11 1942-08-25 Gen Tire & Rubber Co Method of and apparatus for cutting and splicing thick rubber stock and the like
GB944617A (en) * 1962-03-02 1963-12-18 Barand Ltd Device for cutting soft tubing
US3263540A (en) * 1964-05-27 1966-08-02 Dow Chemical Co Apparatus for slitting plastic film
US3259004A (en) * 1964-06-10 1966-07-05 Dow Chemical Co Band saw employing a copper blade
DE2454919C3 (de) * 1974-11-20 1978-04-27 Hoechst Ag, 6000 Frankfurt Schneidvorrichtung für beschichtete Platten
DE2536685A1 (de) * 1975-08-18 1977-03-03 Meurer Franz Josef Verfahren und vorrichtung zum trennen von folien
FR2425922A1 (fr) * 1978-05-19 1979-12-14 Lair Jacques Perfectionnements apportes a un dispositif de coupe
DE3248536A1 (de) * 1982-12-29 1984-07-05 Zängl GmbH, 8000 München Schneidvorrichtung zum schneiden von platten aus thermoplastischem material

Also Published As

Publication number Publication date
EP0220341A1 (fr) 1987-05-06
ATE36132T1 (de) 1988-08-15
DE3564087D1 (en) 1988-09-08

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