GB1340474A - Compression moulding press - Google Patents

Compression moulding press

Info

Publication number
GB1340474A
GB1340474A GB4228372A GB4228372A GB1340474A GB 1340474 A GB1340474 A GB 1340474A GB 4228372 A GB4228372 A GB 4228372A GB 4228372 A GB4228372 A GB 4228372A GB 1340474 A GB1340474 A GB 1340474A
Authority
GB
United Kingdom
Prior art keywords
bore
piston
fluid
compression
cylinder
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
GB4228372A
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.)
Fjellman R A E
Original Assignee
Fjellman R A E
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 Fjellman R A E filed Critical Fjellman R A E
Publication of GB1340474A publication Critical patent/GB1340474A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space

Landscapes

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

Abstract

1340474 Compression moulding R A E FJELLMAN 12 Sept 1972 [21 Sept 1971] 42283/72 Heading B5A The plattens of a compression moulding press (Fig. 1, not shown) are prevented from complete closure until the moulding material has begun to cure and shrink by a plurality of partly-extended piston and cylinder units 16, 14 fixed to one platten and engaging abutments 18 on the other, the units are then retracted to permit full compression,s and subsequently the piston and cylinder are extended to beyond their first extendeds position to open the mould 8, 10. Initially (Fig. 2a) pressurized fluid in bore 18 of stationary cylinder 14 urges piston 16 upwardly into engagement with a ring piston 34 which is urged downwardly with greater force on to shoulder 30 by fluid in bore 32. The upper platten is lowered by hydraulic rams (6) until abutment 18 engages piston-rod 16 and thereby closes air passage 22, the consequent rise in pressure in air line 20 triggering a timed dwell stage, after which the fluid is exhausted from bore 17 to permit final compression (Fig. 2b). The mould is opened (Fig. 2c) by exhausting fluid from bore 32 and feeding fluid into bore 28 to fully raise pistons 26 and 34.
GB4228372A 1971-09-21 1972-09-12 Compression moulding press Expired GB1340474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1192871A SE356249B (en) 1971-09-21 1971-09-21

Publications (1)

Publication Number Publication Date
GB1340474A true GB1340474A (en) 1973-12-12

Family

ID=20294857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4228372A Expired GB1340474A (en) 1971-09-21 1972-09-12 Compression moulding press

Country Status (3)

Country Link
DE (1) DE2245678C2 (en)
GB (1) GB1340474A (en)
SE (1) SE356249B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3138858C2 (en) * 1981-09-30 1986-02-06 Lenser Kunststoff-Presswerk Gmbh + Co Kg, 7913 Senden Process for the production of finished moldings with different cross-sections from thermoplastic material
DE3138866A1 (en) * 1981-09-30 1983-04-14 Lenser Kunststoff-Presswerk Gmbh + Co Kg, 7913 Senden Process for producing finished mouldings with regions of different cross-section, in particular chamber and membrane filter plates for solid-liquid separation
DE3928533C2 (en) * 1989-08-29 1995-04-06 Dorstener Maschf Ag Hydraulic press, especially for the building block industry

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE338664B (en) * 1970-01-15 1971-09-13 R Fjellman

Also Published As

Publication number Publication date
SE356249B (en) 1973-05-21
DE2245678C2 (en) 1983-04-28
DE2245678A1 (en) 1973-03-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee