GB810287A - Improvements in and relating to extrusion machines - Google Patents

Improvements in and relating to extrusion machines

Info

Publication number
GB810287A
GB810287A GB21546/58A GB2154658A GB810287A GB 810287 A GB810287 A GB 810287A GB 21546/58 A GB21546/58 A GB 21546/58A GB 2154658 A GB2154658 A GB 2154658A GB 810287 A GB810287 A GB 810287A
Authority
GB
United Kingdom
Prior art keywords
lead
die
feed
pencil
core
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
GB21546/58A
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.)
Conte SA
Original Assignee
Conte SA
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 Conte SA filed Critical Conte SA
Publication of GB810287A publication Critical patent/GB810287A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/455—Screws arranged to convey material towards each other, e.g. separate screws arranged after each other and feeding in opposite directions
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

810,287. Extrusion machines. CONTE. Aug. 31, 1955 [April 5, 1955], No. 21546/58. Divided out of 810,285. Class 87(2). A machine for the simultaneous extrusion of two materials, particularly for extruding pencil lead and a surrounding sheath in the manufacture of pencils, comprises two coaxial extrusion dies 28, 30 and two distinct oppositely threaded feed worms 24, 25 on the outer surface of a cylindrical body 23 rotatably mounted on a cylindrical core 22, the worm 24 being arranged to feed one material, e.g. a pencil sheath composition, to the die 30, and the worm 25 being arranged to feed the other material, e.g. a pencil lead composition, to the die 28 through an axial bore 21 in the core 22. The body 23 is rotated by means of a pinion, worm wheel, or pulley 33. The pencil lead and pencil sheath composition is fed from supply tubes 37, 38, respectively, containing feed worms 39, 40 or feed pistons. The worm 25 feeds the lead composition to the bore 21 through radial bores 271 in the core 22. Further radial bores 27 provide passages for the lead composition so that it may lubricate the inner surface of the body 23. The core 22 has threaded ends, one end receiving the die 28 and the other a plug 29, a pressure gauge or a feed hopper for prefabricated leads to be reinforced by the lead composition fed through the bores 271. The pencil sheath material extruded through the die 30 surrounds the lead extruded through the die 28, and the sheathed lead is extruded through nozzle 42 attached by a nut 41 to the die 30. The nozzles 28, 42 may thus be changed for others of different dimensions, and the body 23 and the core 22 can similarly be changed. In addition the body 23 may be made in two parts coupled together by dogs at approximately the central plane of the driving member 33.
GB21546/58A 1955-04-05 1955-08-31 Improvements in and relating to extrusion machines Expired GB810287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT810287X 1955-04-05

Publications (1)

Publication Number Publication Date
GB810287A true GB810287A (en) 1959-03-11

Family

ID=3681333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21546/58A Expired GB810287A (en) 1955-04-05 1955-08-31 Improvements in and relating to extrusion machines

Country Status (1)

Country Link
GB (1) GB810287A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343214A (en) * 1965-08-24 1967-09-26 Rexall Drug Chemical Adjustable pressure extruding die
DE4132892A1 (en) * 1991-10-04 1993-04-22 Krupp Maschinentechnik SUBSTANCE MIXING FACTIONING
CN108908888A (en) * 2018-06-05 2018-11-30 安徽得亿文教用品有限公司 Extruder is used in a kind of production of plastic pencil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343214A (en) * 1965-08-24 1967-09-26 Rexall Drug Chemical Adjustable pressure extruding die
DE4132892A1 (en) * 1991-10-04 1993-04-22 Krupp Maschinentechnik SUBSTANCE MIXING FACTIONING
CN108908888A (en) * 2018-06-05 2018-11-30 安徽得亿文教用品有限公司 Extruder is used in a kind of production of plastic pencil

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