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DE1232729B - Process for the production of porous, oil-containing bearings from plastic - Google Patents

Process for the production of porous, oil-containing bearings from plastic

Info

Publication number
DE1232729B
DE1232729B DEK47101A DEK0047101A DE1232729B DE 1232729 B DE1232729 B DE 1232729B DE K47101 A DEK47101 A DE K47101A DE K0047101 A DEK0047101 A DE K0047101A DE 1232729 B DE1232729 B DE 1232729B
Authority
DE
Germany
Prior art keywords
oil
plastic
porous
pores
bearings
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
DEK47101A
Other languages
German (de)
Inventor
Werner Hartmann
Dr Felix Schuelde
Dr Dietrich Schleede
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.)
GM Pfaff AG
Original Assignee
GM Pfaff AG
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 GM Pfaff AG filed Critical GM Pfaff AG
Priority to DEK47101A priority Critical patent/DE1232729B/en
Priority to NL294697A priority patent/NL294697A/xx
Priority to GB25627/63A priority patent/GB1043844A/en
Priority to FR7791A priority patent/FR1361671A/en
Priority to BE634293D priority patent/BE634293A/xx
Publication of DE1232729B publication Critical patent/DE1232729B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • 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
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/76—Polyolefins, e.g. polyproylene [PP]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/06—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Sliding-Contact Bearings (AREA)

Description

Verfahren zum Herstellen poröser, ölhaltiger Lager aus Kunststoff Die Erfindung betrifft ein verfahren zum Herstellen poröser, ölhaltiger Lager aus Kunststoff, bei dem zunächst ein mit Poren versehener Kunststoffkörper hergestellt und dieser dann zur Füllung der Poren mit erhitztem Öl behandelt wird.Method for producing porous, oily bearings made of plastic The invention relates to a method for making porous, oily bearings made of plastic, in which a plastic body provided with pores is first made and this is then treated with heated oil to fill the pores.

Es ist bereits bekannt, beim Herstellen wartungsfreier, ölhaltiger Lagerteile aus Kunstharz so vorzugehen, daß dem Kunstharz unter anderem Verdrängerkörperchen, z. B. Zucker, eingelagert und diese dann aus den geformten Lagerteilen wieder herausgelöst werden. Die durch das Herauslösen entstandenen Hohlräume werden dann durch Auskochen der Lagerteile in Öl mit Öl gefüllt.It is already known to proceed in the manufacture of maintenance-free, oil-containing bearing parts made of synthetic resin so that the synthetic resin, inter alia, displacers such. B. sugar, stored and then removed from the molded bearing parts again. The cavities created by the detachment are then filled with oil by boiling the bearing parts in oil.

Auf diesem Wege hergestellte Lager haben die Eigenschaft, daß insbesondere bei höheren Temperaturen das im Lagermaterial enthaltene Öl infolge der miteinander verbundenen Poren leicht ausfließen kann und eine längere selbsttätige Dauerschmierung dann nicht gewährleistet ist.Bearings produced in this way have the property that, particularly at higher temperatures, the oil contained in the bearing material can easily flow out due to the interconnected pores and longer, automatic, permanent lubrication is then not guaranteed.

Ferner ist es bekannt, Kunststoffe mit eingemischten Treibmitteln, d. h. Stoffen, die bei erhöhter Temperatur Gase entwickeln, durch Spritz-0 gießen formgebend zu verarbeiten. Dabei entstehen normalerweise Forinkörper mit Poren. In besonderen Fällen, bei Kühlung der Formwandung, kann man dabei Körper erhalten, die eine feste Außenschicht haben und in dem von der Außenschicht umschlossenen inneren Bereich Poren aufweisen.It is also known to use plastics with mixed blowing agents, d. H. Materials that develop gases at elevated temperatures can be processed by injection molding to give them a shape. This usually results in formal bodies with pores. In special cases, when the mold wall is cooled, it is possible to obtain bodies which have a solid outer layer and have pores in the inner area enclosed by the outer layer.

Erfindungsgemäß lassen sich wartungsfreie Lager ohne die angegebenen Nachteile dadurch herstellen, daß der Kunststoffkörper durch Spritzgießen aus treibmittelhaltigen Olefinen hergestellt wird.According to the invention, maintenance-free bearings can be used without the specified ones Produce disadvantages in that the plastic body by injection molding from propellant-containing Olefins is produced.

überraschenderweise dringt bei der ölbehandlung der Lagerkörper aus Polyäthylen in die darin enthaltenen geschlossenen Poren Öl ein. Hieraus erklärt sich die bessere Notlaufeigenschaft der erfindungsgemäß hergestellten Lager.Surprisingly, permeates in the oil-treatment of the bearing body made of polyethylene in which it contains closed pores oil. This explains the better emergency running properties of the bearings produced according to the invention.

Als Treibmittel können solche Stoffe wie Azodicarbonainid, z. B. Genytrone, Porofor, Triafol, verwendet werden.As a propellant such substances as azodicarbonainide, z. B. Genytrone, Porofor, Triafol, can be used.

Beim Spritzen entsteht durch das Treibmittel ein geschlossene Poren enthaltender Körper. Polyolefine sind bekanntlich oleophil. Durch Kochen in Öl kann man je nach Zeit und Viskosität des öles bis 20 % Gewichtsanteile davon in den Stoff einbringen. Aus diesem Material können Halberzeugnisse wie Blöcke, Platten, Stangen, Rohre hergestellt werden, die ihre endgültige Formgebung durch spanabhebende Bearbeitung erhalten. Es ist aber auch möglich, sofort maßhaltige Fertigteile wie Lager, Gleitschuhe usw. herzustellen, die nach dem Spritzen keiner Nacharbeit mehr bedürfen. Das bei vielen Kunststofflagem so gefährliche Festfahren der Welle durch die Volumenänderung des Lagers infolge Wärmeausdehnung und Wasseraufnahme tritt hier nicht ein. Die vorgeschlagenen Kunststoffe (Polyolefine) nehmen bekanntlich kein Wasser auf, und die durch Temperaturerhöhung eintretende Wärineausdehnung wird durch den porösen Körper aufgefangen.When spraying, the propellant creates a closed pore-containing body. Polyolefins are known to be oleophilic. By cooking in oil , depending on the time and viscosity of the oil, up to 20% by weight can be incorporated into the fabric. This material can be used to manufacture semi-finished products such as blocks, plates, rods and tubes, which are given their final shape by machining. However, it is also possible to immediately manufacture dimensionally accurate finished parts such as bearings, sliding blocks, etc., which do not require any further work after spraying. The shaft jamming, which is so dangerous with many plastic bearings, due to the change in volume of the bearing due to thermal expansion and water absorption does not occur here. It is known that the proposed plastics (polyolefins) do not absorb water, and the thermal expansion that occurs as a result of the increase in temperature is absorbed by the porous body.

Die Herstellung der Lager oder der Lagerwerkstücke erfolgt, wie bereits erwähnt, durch Spritzgießen. Als Ausgangswerkstoff wird den Polyolefinen in Pulverform die gewünschte Menge Treibmittel ebenfalls in Pulverform beigegeben. Es können je- doch auch Granulate als Ausgangsstoff verwendet werden. Nach dem Spritzen wird der Lagerwerkstoff einige Zeit im heißen Öl gelagert, bis sich die Poren mit öl gefällt haben, und damit ist das Gleitlager einsatzfähig.As already mentioned, the bearings or the bearing workpieces are manufactured by injection molding. As a starting material, the desired amount of propellant is added to the polyolefins in powder form, also in powder form. It can also be used as a starting material granules JE yet. After spraying, the bearing material is stored in hot oil for some time until the pores have filled with oil , and the plain bearing is then ready for use.

Claims (1)

Patentanspruch: Verfahren zum Herstellen poröser, ölhaltiger Lager aus Kunststoff, bei dem zunächst ein mit Poren versehener Kunststoffkörper hergestellt und dieser dann zur Füllung der Poren mit erhitztem Öl behandelt wird, d a d u r c h g e k e n n - zeichnet, daß der Kunststoffkörper durch Spritzgießen aus treibmittelhaltigen Olefinen hergestellt wird. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 832 679, 579 693; britische Patentschrift Nr. 815 173. Patent claim: A process for producing porous, oil-containing stock made of plastic, in which first a provided with pores plastic body and this is then treated to fill the pores with hot oil, d a d u rch g e k hen - characterized in that the plastic body by injection molding is made from propellant-containing olefins. Considered publications: German Patent Nos. 832 679, 579 693; British Patent No. 815 173.
DEK47101A 1962-06-28 1962-06-28 Process for the production of porous, oil-containing bearings from plastic Pending DE1232729B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DEK47101A DE1232729B (en) 1962-06-28 1962-06-28 Process for the production of porous, oil-containing bearings from plastic
NL294697A NL294697A (en) 1962-06-28 1962-06-28
GB25627/63A GB1043844A (en) 1962-06-28 1963-06-27 A self-lubricating bearing of thermoplastic material and process of making same
FR7791A FR1361671A (en) 1962-06-28 1963-06-27 Thermoplastic sliding bearing and method for its manufacture
BE634293D BE634293A (en) 1962-06-28 1963-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK47101A DE1232729B (en) 1962-06-28 1962-06-28 Process for the production of porous, oil-containing bearings from plastic

Publications (1)

Publication Number Publication Date
DE1232729B true DE1232729B (en) 1967-01-19

Family

ID=7224436

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK47101A Pending DE1232729B (en) 1962-06-28 1962-06-28 Process for the production of porous, oil-containing bearings from plastic

Country Status (5)

Country Link
BE (1) BE634293A (en)
DE (1) DE1232729B (en)
FR (1) FR1361671A (en)
GB (1) GB1043844A (en)
NL (1) NL294697A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5574074A (en) * 1993-02-19 1996-11-12 Mitsubishi Cable Industries, Inc. Foamable organic polymer composition and production of foamed article
US7147378B2 (en) * 2004-02-19 2006-12-12 Gore Enterprise Holdings, Inc. Low friction, abrasion-resistant bearing materials
US7659230B2 (en) * 2004-11-24 2010-02-09 E.I. Du Pont De Nemours And Company Thermoplastic resin composition containing mesoporous powders absorbed with lubricating oils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579693C (en) * 1931-05-16 1933-06-29 Ver Kugellagerfabriken Akt Ges Process for producing a molded body, in particular for bearings
DE832679C (en) * 1950-11-15 1952-02-21 Otto Schubert Process for the production of synthetic resin sliding surfaces
GB815173A (en) * 1956-02-24 1959-06-17 Dow Chemical Co Improved method for moulding expandable thermoplastic resinous materials and mouldedarticles thereby obtained

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579693C (en) * 1931-05-16 1933-06-29 Ver Kugellagerfabriken Akt Ges Process for producing a molded body, in particular for bearings
DE832679C (en) * 1950-11-15 1952-02-21 Otto Schubert Process for the production of synthetic resin sliding surfaces
GB815173A (en) * 1956-02-24 1959-06-17 Dow Chemical Co Improved method for moulding expandable thermoplastic resinous materials and mouldedarticles thereby obtained

Also Published As

Publication number Publication date
GB1043844A (en) 1966-09-28
FR1361671A (en) 1964-05-22
NL294697A (en) 1963-06-28
BE634293A (en) 1963-11-04

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