DE405539C - Device for forming hollow, ring-shaped rubber objects - Google Patents

Device for forming hollow, ring-shaped rubber objects

Info

Publication number
DE405539C
DE405539C DEP41671D DEP0041671D DE405539C DE 405539 C DE405539 C DE 405539C DE P41671 D DEP41671 D DE P41671D DE P0041671 D DEP0041671 D DE P0041671D DE 405539 C DE405539 C DE 405539C
Authority
DE
Germany
Prior art keywords
rubber
ring
forming hollow
shaped rubber
mold
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
DEP41671D
Other languages
German (de)
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.)
PARAMOUNT RUBBER CONS Inc
Original Assignee
PARAMOUNT RUBBER CONS Inc
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 PARAMOUNT RUBBER CONS Inc filed Critical PARAMOUNT RUBBER CONS Inc
Priority to DEP41671D priority Critical patent/DE405539C/en
Application granted granted Critical
Publication of DE405539C publication Critical patent/DE405539C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Tyre Moulding (AREA)

Description

Vorrichtung zum Formen hohler, ringförmiger Gummigegenstände. Gegenstand der Erfindung ist eine Vorrichtung zum Formen hohler, ringförmiger Gummigegenstände mit Hilfe von Formplatten, in deren Höhlungen die außerhalb der Höhlungen durch Luftdruck festgehaltenen Gummiplatten hineingesaugt werden. Die Erfindung besteht darin, daß ringförmige Nuten zum Ansaugen des Gummis sowohl längs des äußeren als auch des inneren Randes der Formhöhlungen angeordnet sind. Hierdurch ist es möglich, ringförmige Gummischeiben für das Formen zu benutzen, so daß der luftleer zu machende Raum unter den Gummiplatten wesentlich verringert und eine ungleichmäßige Dehnung des Gummis beim Hineinsaugen in die Formhöhlung vermieden wird.Device for forming hollow, ring-shaped rubber objects. object of the invention is an apparatus for forming hollow, annular rubber articles with the help of mold plates, in whose cavities the outside of the cavities through Air pressure held rubber sheets are sucked into it. The invention exists in that annular grooves for sucking the rubber along both the outer and also the inner edge of the mold cavities are arranged. This makes it possible to use ring-shaped rubber washers for molding, so that the The space to be evacuated under the rubber sheets is significantly reduced and one uneven stretching of the rubber when sucking into the mold cavity avoided will.

In der Zeichnung ist eine Ausführungsform der " Erfindung veranschaulicht, und zwar zeigt die Abbildung einen Vertikalschnitt durch eine Presse mit zwei Formen.In the drawing, an embodiment of the "invention is illustrated, namely the figure shows a vertical section through a press with two molds.

Auf dem beweglichen Pressentisch 17, an dem oberen Widerlager 12 und beweglichen Zwischenplatten 2o sind Formen 30, 33, 31 und 32 angeordnet. Jede Form, die zur Herstellung des Luftschlauches für Automobilreifen dient, ist ringförmig ausgebildet und hat einen ringförmigen Hohlraum 35, welcher auf der Außen- und Innenseite in bekannter 'Weise durch Schneidkanten 36 und 37 begrenzt wird. Längs dieser Kanten sind ringförmige Nuten 38 und 39 vorgesehen, um eine Saugwirkung auf den Rand der Gummiplatte ausüben zu können. Die Höhlung 35 steht durch feine Durchgänge 58 mit einem Saugraum 5o in der Formplatte in Verbindung, und die Nuten 38 und 39 sind mit dem Saugraum entsprechend durch feine Durchgänge 59 verbunden. An die Saugräume 5o der Formen sind Saugschläuche 6¢ angeschlossen, die lang genug sind, um die vertikale Bewegung der Formen zu gestatten. Nach dem Auflegen der ringförmigen Gummiplatten A, A1 auf die Formen erfolgt das Ansaugen des Gummis. Dabei werden die Scheiben zunächst am Rande festgehalten und dann in die Formhöhlungen eingesaugt. Nunmehr wird in die Formhöhlungen ein Treibmittel eingebracht, sodann werden die For-. men in der üblichen Weise durch Aufwärtsgang des Druckwasserkolbens 16 geschlossen, wobei durch die schneidenden Kanten 36 und 37 der überschuß an Gummi außerhalb des Saumes abgeschert wird. Molds 30, 33, 31 and 32 are arranged on the movable press table 17, on the upper abutment 12 and movable intermediate plates 2o. Each mold that is used to produce the air hose for automobile tires is annular and has an annular cavity 35 which is delimited on the outside and inside by cutting edges 36 and 37 in a known manner. Annular grooves 38 and 39 are provided along these edges in order to be able to exert a suction effect on the edge of the rubber plate. The cavity 35 communicates with a suction space 50 in the mold plate through fine passages 58, and the grooves 38 and 39 are connected to the suction space by fine passages 59, respectively. Suction hoses 6 [are connected to the suction spaces 50 of the molds, which are long enough to allow the molds to move vertically. After the annular rubber plates A, A1 have been placed on the molds, the rubber is sucked in. The panes are first held at the edge and then sucked into the mold cavities. Now a propellant is introduced into the mold cavities, then the mold. men closed in the usual way by upward movement of the pressurized water piston 16, the excess of rubber outside the hem is sheared off by the cutting edges 36 and 37.

Claims (1)

PATENTANSPRUCH: Vorrichtung zum Formen hohler, ringförmiger Gummigegenstände mit Hilfe von Formplatten, in deren Höhlungen die außerhalb der Höhlungen durch Luftdruck festgehaltenen Gummiplatten hineingesaugt werden, dadurch gekennzeichnet, daß ringförmige Nuten zum Ansaugen des Gummis sowohl längs des äußeren als auch des inneren Randes der Formhöhlungen angeordnet sind. Claim: Device for forming hollow, ring-shaped rubber objects with the aid of mold plates, in the cavities of which the rubber plates held outside the cavities by air pressure are sucked in, characterized in that annular grooves for sucking in the rubber are arranged along both the outer and the inner edge of the mold cavities are.
DEP41671D 1920-07-01 1920-07-01 Device for forming hollow, ring-shaped rubber objects Expired DE405539C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP41671D DE405539C (en) 1920-07-01 1920-07-01 Device for forming hollow, ring-shaped rubber objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP41671D DE405539C (en) 1920-07-01 1920-07-01 Device for forming hollow, ring-shaped rubber objects

Publications (1)

Publication Number Publication Date
DE405539C true DE405539C (en) 1924-11-06

Family

ID=7378004

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP41671D Expired DE405539C (en) 1920-07-01 1920-07-01 Device for forming hollow, ring-shaped rubber objects

Country Status (1)

Country Link
DE (1) DE405539C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605546A1 (en) * 1976-02-10 1977-08-11 Erhard Langecker BLOW MOLD FOR THE MANUFACTURE OF FOLDED BELTS MADE OF HIGHLY ELASTIC PLASTIC

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605546A1 (en) * 1976-02-10 1977-08-11 Erhard Langecker BLOW MOLD FOR THE MANUFACTURE OF FOLDED BELTS MADE OF HIGHLY ELASTIC PLASTIC

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