DE2538575A1 - Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn. - Google Patents

Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn.

Info

Publication number
DE2538575A1
DE2538575A1 DE19752538575 DE2538575A DE2538575A1 DE 2538575 A1 DE2538575 A1 DE 2538575A1 DE 19752538575 DE19752538575 DE 19752538575 DE 2538575 A DE2538575 A DE 2538575A DE 2538575 A1 DE2538575 A1 DE 2538575A1
Authority
DE
Germany
Prior art keywords
foam
rollers
deep
cutting
drilling
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.)
Pending
Application number
DE19752538575
Other languages
German (de)
Inventor
Auf Nichtnennung Antrag
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.)
ROULOR GmbH
Original Assignee
ROULOR GmbH
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 ROULOR GmbH filed Critical ROULOR GmbH
Priority to DE19752538575 priority Critical patent/DE2538575A1/en
Publication of DE2538575A1 publication Critical patent/DE2538575A1/en
Pending 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
    • 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
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/006—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting blocs of plastic material
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape

Abstract

Prodn. of moulded articles from foamed materials, esp. flexible plastic foam consists of deep-cooling the foam and mechanically working it while cold. Specifically, foam rollers and cylinders are produced by deep-cooling a foam block and cutting out rollers and cylinders by cutting and drilling. An internal borehole may be drilled simultaneously into foam roller. Rollers can be used as inking rollers and as wetting or or sport rollers in copying machines. While cooled, foams, esp. open-pored foams, undergo temporary embrittlement and put up sufficient resistance to working tool. Working is facilitated, accelerated and can proceed according to desired measurements.

Description

Verfahren zur Herstellung von Formkörpern aus ~elsti hem Schaumstoff, insbesonaere unstharz-Schaumstoff, wie Polyurethan, durch mechanische Bearbeitung. Process for the production of moldings from elastic foam, in particular synthetic resin foam, such as polyurethane, through mechanical processing.

Bei der Herstellung von Formkörpern aus Schaumstoffen, inselastischen besondere/Kunstharz-Schaumstoffen, aus Polyurethan oder dergleichen, treten insofern besondere Schwierigkeiten auf, als der Schaumstoff gegenüber dem Angriff der Bearbeitungswerkzeuge ausweicht und daher eine Maßhaltigkeit des hergestellten Formkörpers nicht immer bzw. nur durch anwendung besonderer Maßnahmen und Bearbeitungsarten möglich ist.In the production of moldings from foams, island-elastic special / synthetic resin foams, made of polyurethane or the like, occur in this respect particular difficulties, as the foam against the attack of the processing tools evades and therefore not always a dimensional accuracy of the molded body produced or is only possible through the application of special measures and types of processing.

Wenn man beispielsweise aus Polyurethan-Schaumstoff mit offenen Porten Walzen herstellte, so ging man in der Weise vor, daß der Schaumstoff zunächst in Würfel geschnitten wird, dann in einen Kasten gezwängt mit einer Nittelbohrung versehen wird und dann auf einen Dorn aufgezogen wird. Dieser Dorn wird darauf auf eine Drehbank gespannt und mit Hilfe einer Trennscheibe bei der Rotation des Dornes ein Zylinder oder eine Walze hergestellt. Dieses Verfahren ist naturgemäß außerordentlich aufwendig, führt nicht mit Sicherheit zu maßhaltigen Formstücken und hat außerdem den lIachteil eines großen Abfalls.For example, if you are made of polyurethane foam with open ports Rolling produced, the procedure was in such a way that the foam first in Cube is cut, then wedged in a box with a center hole and then wound on a mandrel. This Thorn becomes then clamped on a lathe and with the help of a cutting disc while rotating of the mandrel made a cylinder or a roller. This procedure is natural extremely expensive, does not definitely lead to dimensionally stable fittings and also has the disadvantage of a lot of waste.

Ähnliche Schwierigkeiten treten auf, wenn man andere Bearbeitungsverfahren, beispielsweise Sclrneidbohren, bei der Herstellung von Formkörpern aus Schaumstoff zur Anwendung bringt.Similar difficulties arise when using other machining methods, for example cutting drilling, in the production of molded bodies from foam applies.

Die Erfindung hat sich zum Ziel gesetzt, diese Nachteile zu vermeiden und einen einfachen, wenig aufwendigen Weg zu finden, um aus Schaumstoffen maßhaltige Werkstücke durch mechanische Bearbeitung herzustellen.The aim of the invention is to avoid these disadvantages and to find a simple, inexpensive way to get dimensionally stable from foams Manufacture workpieces by mechanical processing.

Zur Lösung dieser Aufgabe wird gemäß der Erfindung der #chaumstoff zunächst tiefgekühlt und dann in diesem Zustand der mechanischen Bearbeitung unterworfen. Die Erfindung nutzt dabei die Eigenschaft von Kunstschaumstoffen, insbesondere Polyurethan-Schaumstoffen mit offenen Poren (wie beispielsweise Qualivorübergehend tät-Esther der Bayer-Werke), bei tieferen eperaqurenlzu verspröden, so daß sie dann in diesem Zustand dem Bearbeiturgswerkzeug einen ausreichenden Widerstand entgegensetzen, welcher die Bearbeitung entscheidend erleichtert, beschleunigt und maßhaltig gestalten läßt.According to the invention, the foam initially deep-frozen and then subjected to mechanical processing in this state. The invention uses the property of synthetic foams, in particular polyurethane foams with open pores (such as quali-temporary ty-Esther from Bayer works), with deeper eperaqurenl to embrittlement, so that they are then in this state the processing tool Oppose a sufficient resistance, which the processing is decisive can be made easier, accelerated and dimensionally accurate.

Weiterhin ist Gegenstand der Erfindung ein Verfahren zur lIerstellung von Walzen oder Zylindern aus Schaumstoffen, welches im wesentlichen darin besteht, daß ein Schaumstoffblock einer Tiefkühlung unterworfen wird und dann aus dem Block Walzen oder Zylinder durch Schneidbohren ausgeschnitten werden. Unter Schneidbohren wird dabei ein Bohren mittels eines Hohlzylinderförmigen Bohrers verstanden, welcher die Gestalt einer I4etallbuchse aus #pezialstahl mit einem schneidenförmig gestalteten Ende besitzt. Hierbei kann gleichzeitig, wenn erwünscht, auch eine Innenbohrung in der Walze durch einen innerhalb der Metallbuchse angeordneten Bohrer hergestellt werden. Es lassen sich hierbei mit großer Arbeitsgeschwindigkeit maßgerechte Walzen oder Zylinder herstellen, wobei man zweckmäßig so vorgeht, daß man durch Schneidbohren Zylinder oder Walzen größerer Länge herstellt und aus diesen Längen die entsprechenden Abschnitte der gewünschten Größe der Walzen oder Zylinder abtrennt. Die eigenartigen Vorteile der Erfindung ermöglichen es dabei auch, daß aus einem tiefgekühlten Schaumstoffblock beispielsweise drei oder mehr Walzen oder Zylinder gleichzeitig durch eine entsprechende Anzahl von nebeneinander angeordneten Bohrern hergestellt werden können, da sich infolge der Versprödung des Schaumstoffes die einzelnen Bohrstellen nicht gegeneinander nachteilig beeinflussen.The invention also relates to a method for production of rollers or cylinders made of foam, which essentially consists of that a foam block is subjected to freezing and then out of the block Rolls or cylinders are cut out by cutting-drilling. Under cutting drilling is understood to mean drilling by means of a hollow cylindrical drill, which the shape of a metal socket made of #special steel with a blade shape designed end owns. At the same time, if desired, an inner bore can also be used made in the roll by a drill arranged inside the metal sleeve will. Here, dimensionally accurate rolls can be produced at a high working speed or make cylinders, it is expedient to proceed by cutting-drilling Manufactures cylinders or rollers of greater length and from these lengths the corresponding Separates sections of the desired size of the rollers or cylinders. The peculiar ones Advantages of the invention also make it possible that from a frozen foam block for example three or more rollers or cylinders simultaneously by a corresponding one Number of juxtaposed drills can be made because as a result of the embrittlement of the foam, the individual drilling points are not against each other adversely affect.

Die auf diese ~reise hergestellten ~falzen können beispielsweise für Farbrollen und für Befeuchtungsrollen oder Transportrollen in Kopiermaschinen Verwendung finden.The folds produced on this trip can be used, for example, for Paint rollers and used for dampening rollers or transport rollers in copying machines Find.

Claims (3)

Patentansprüche Claims D Verfahren Sur Herstellung von rormkörpern aus Schaumstoff, elastischem insbesondereA#nstschaumstoff, wie Polyurethan oder dergleichen, dadurch gekennzeichnet, daß der Schaumstoff zunächst einer Tiefkühlung unterworfen wird und dann im gekühlten Zustana der mechanischen Bearbeitung unterworfen wird.D Process for the production of moldings made of foam, elastic in particular foam, such as polyurethane or the like, characterized in that that the foam is first subjected to a deep freezing and then in the cooled Condition of mechanical processing is subjected. 2. Verfahren nach Anspruch 1 zur Herstellung von Walzen oder Zylindern aus Schaumstoffen, dadurch gekennzeichnet, daß ein Schaumstoffblock tiefgekühlt und dann aus dem Block Jalzen oder Zylinder durch Schneidbohren ausgeschnitten werden.2. The method according to claim 1 for the production of rolls or cylinders made of foams, characterized in that a foam block is deep-frozen and then cut out from the block jalzen or cylinder by cutting-drilling. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß. gleichzeitig eine Innenbohrung in der Schaumstoffwalze hergestellt wird.3. The method according to claim 2, characterized in that. simultaneously an inner hole is made in the foam roller.
DE19752538575 1975-08-29 1975-08-29 Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn. Pending DE2538575A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752538575 DE2538575A1 (en) 1975-08-29 1975-08-29 Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752538575 DE2538575A1 (en) 1975-08-29 1975-08-29 Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn.

Publications (1)

Publication Number Publication Date
DE2538575A1 true DE2538575A1 (en) 1977-03-03

Family

ID=5955180

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752538575 Pending DE2538575A1 (en) 1975-08-29 1975-08-29 Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn.

Country Status (1)

Country Link
DE (1) DE2538575A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926564A1 (en) * 1979-06-30 1981-01-22 Kwikstick Products Ltd Cutting rolled foam plastics - involving cooling to rigidify the plastics prior to cutting
EP0242450A1 (en) * 1986-04-22 1987-10-28 GEA Energietechnik GmbH & Co. Method of manufacturing open-celled cleaning bodies for the internal cleaning of tubes of water-cooled tube-type heat exchangers
DE19518750C1 (en) * 1995-05-22 1996-09-26 Sprimag Spritzmaschbau Gmbh Mfr. of a profiled roll of elastically compressible foam
DE19905812A1 (en) * 1999-02-12 2000-08-31 Erika Schloegel Machining resilient foams, requires that their pores shall first be filled with liquid and subsequently frozen, optionally also embrittling the plastic, before e.g. precision automatic machining
US6190584B1 (en) * 1996-10-22 2001-02-20 C.J. Associates, Ltd. Method of manufacture of a molded product
EP2133155A1 (en) * 2008-06-10 2009-12-16 Friess Nespoli GmbH Paint roll for an paint roller, paint roller with such an paint roll and method for producing a foam material roll for such a paint roll
DE102010044274A1 (en) * 2010-09-02 2012-04-26 Ciret Gmbh Method for manufacturing foam body, particularly foam roller of paint roller, involves retracting separation tool in direction of longitudinal axis of foam block resulting at removable foam body

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926564A1 (en) * 1979-06-30 1981-01-22 Kwikstick Products Ltd Cutting rolled foam plastics - involving cooling to rigidify the plastics prior to cutting
EP0242450A1 (en) * 1986-04-22 1987-10-28 GEA Energietechnik GmbH & Co. Method of manufacturing open-celled cleaning bodies for the internal cleaning of tubes of water-cooled tube-type heat exchangers
DE19518750C1 (en) * 1995-05-22 1996-09-26 Sprimag Spritzmaschbau Gmbh Mfr. of a profiled roll of elastically compressible foam
US6190584B1 (en) * 1996-10-22 2001-02-20 C.J. Associates, Ltd. Method of manufacture of a molded product
DE19905812A1 (en) * 1999-02-12 2000-08-31 Erika Schloegel Machining resilient foams, requires that their pores shall first be filled with liquid and subsequently frozen, optionally also embrittling the plastic, before e.g. precision automatic machining
DE19905812C2 (en) * 1999-02-12 2001-09-27 Erika Schloegel Process for the mechanical, chip-forming processing of workpieces made of elastic foam plastic
EP2133155A1 (en) * 2008-06-10 2009-12-16 Friess Nespoli GmbH Paint roll for an paint roller, paint roller with such an paint roll and method for producing a foam material roll for such a paint roll
DE102010044274A1 (en) * 2010-09-02 2012-04-26 Ciret Gmbh Method for manufacturing foam body, particularly foam roller of paint roller, involves retracting separation tool in direction of longitudinal axis of foam block resulting at removable foam body

Similar Documents

Publication Publication Date Title
DE2538575A1 (en) Working flexible foams, esp. of polyurethane - by deep-cooling, cutting and drilling, and pref. for roller and cylinder prodn.
DD140239A5 (en) DRIVE ELEMENT AND METHOD AND DEVICE FOR MANUFACTURING THEREOF
DE3844338A1 (en) Method and apparatus for machining workpieces of long-chip material
GB1237150A (en) Improvements in or relating to rotary tools for cutting and marking fold-lines, and method, and devices for manufacturing same
DE2239638C3 (en) Process for the non-cutting manufacture of a spherical cap for a support member of a spiral groove bearing
DE632838C (en) Device for guiding the drill head when drilling or boring
DE3518354A1 (en) Process for producing keys or key blanks for locks
DE202020000816U1 (en) Portable set for manual honing with an electric drive
DE1552344A1 (en) Method and device for setting the stop turret for cutting depths and cutting lengths of a lathe for series machining
DE749773C (en) Method and apparatus for removing the burr from the borehole face
JPS5645209A (en) Method and apparatus for extrusion work
DE2342517A1 (en) DRILL
DE433141C (en) Manufacture of solid abrasive tools from emery, carborundum or other powdery or grainy substances
DE871199C (en) Method and device for producing slots in rubber bodies, in particular solid rubber tires, by mechanical means
DE2751475A1 (en) Boring tool for railway wheel hub bores - has short bar with fixed roughing cutter and floating finishing cutter
DE4440360C2 (en) Boring tool for forming holes in a plate
DE625209C (en) Tool for making pellets
DE19518750C1 (en) Mfr. of a profiled roll of elastically compressible foam
DD220529A1 (en) METHOD AND DEVICE FOR PREPARING OVERCRAFTING LONG ACHparallel bores in a metalworking piece
DE430200C (en) Embossing device
DE2209234C3 (en) Process for removing chips from the work area of a tool and device for carrying out the process
DE581640C (en) Adjustment and glazing tool
DE677361C (en) Device for drilling out hollow bodies
DE10304623B3 (en) Foam wind protection member for a microphone, is formed by placing a foam blank on a mandrel, rotating it, and milling it to the desired contours
DE866589C (en) Method and device for producing dust grooves or similar recesses on bearing shell halves during the finishing of the inner bore