GB1213059A - Apparatus for forming a hollow article from a blank, and method of forming a hollow article with this apparatus - Google Patents

Apparatus for forming a hollow article from a blank, and method of forming a hollow article with this apparatus

Info

Publication number
GB1213059A
GB1213059A GB6104368A GB6104368A GB1213059A GB 1213059 A GB1213059 A GB 1213059A GB 6104368 A GB6104368 A GB 6104368A GB 6104368 A GB6104368 A GB 6104368A GB 1213059 A GB1213059 A GB 1213059A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
blank
plunger
die
forming
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
GB6104368A
Inventor
Herbert Guil Johnson
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1213059A publication Critical patent/GB1213059A/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
    • B29C51/002—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 characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/10—Stamping using yieldable or resilient pads
    • B21D22/12—Stamping using yieldable or resilient pads using enclosed flexible chambers
    • 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
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B29C51/262—Clamping means for the sheets, e.g. clamping frames

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

1,213,059. Sheet forming. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 23 Dec., 1968 [26 Dec., 1967], No. 61043/68. Heading B5A. [Also in Division B3] Hollow articles are drawn from single-layered or laminated plastics, metal, or plastics-metal blanks by apparatus comprising a reciprocable plunger 14 provided at its leading end with an inflatable diaphragm 20 and a co-operating female die 13 provided at its base with a movable plate 15. In one mode of operation, the blank is clamped by piston operated levers 31 over the die and the plate 15 raised into contact with the blank. The plunger is then forwarded into proximity with the blank and the diaphragm inflated through conduit 23 so as to pre-stretch the sheet against the action of the plate 15. Finally the diaphragm is fully or partially deflated and the plunger fully inserted into the die to complete the drawing operation. Fluid may be introduced between the blank and the diaphragm and plate through conduits 25 and 17 in order to control the slippage of the sheet. In alternative arrangements, the diaphragm is inflated simultaneously with, or after, the partial penetration of the plunger into the die, full penetration to complete the forming being effected with the diaphragm partially or fully deflated as before. If desired, undercut articles may be formed using split dies. In an alternative apparatus (see Fig. 6, not shown), the plunger is provided with a cylindrical side diaphragm as well as an end diaphragm and the blank is clamped by a ring carried around the plunger. The ring also serves to cut out a blank from a continuous sheet prior to the drawing operation and carries a cylindrical sleeve which restrains the upper end of the side daphragm during its inflation.
GB6104368A 1967-12-26 1968-12-23 Apparatus for forming a hollow article from a blank, and method of forming a hollow article with this apparatus Expired GB1213059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69352567A 1967-12-26 1967-12-26

Publications (1)

Publication Number Publication Date
GB1213059A true GB1213059A (en) 1970-11-18

Family

ID=24785026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6104368A Expired GB1213059A (en) 1967-12-26 1968-12-23 Apparatus for forming a hollow article from a blank, and method of forming a hollow article with this apparatus

Country Status (6)

Country Link
JP (1) JPS4833265B1 (en)
BE (1) BE725913A (en)
DE (1) DE1816713A1 (en)
FR (1) FR1595389A (en)
GB (1) GB1213059A (en)
NL (1) NL6818523A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199281A (en) * 1986-12-19 1988-07-06 Verta Miles Ltd Methods for the production of shell-like mouldings
CN101219456B (en) * 2008-01-23 2010-12-29 句容市科达技术开发有限公司 Rectangle and polygon manhole steel hoop shaping apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7710568A (en) * 1977-09-28 1979-03-30 Wavin Bv PROCESS FOR THE CONTINUOUS FORMING OF HOLLOW OBJECTS FROM THERMOPLASTIC MATERIAL.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199281A (en) * 1986-12-19 1988-07-06 Verta Miles Ltd Methods for the production of shell-like mouldings
GB2199281B (en) * 1986-12-19 1990-06-27 Verta Miles Ltd Methods for the production of shell-like mouldings
CN101219456B (en) * 2008-01-23 2010-12-29 句容市科达技术开发有限公司 Rectangle and polygon manhole steel hoop shaping apparatus

Also Published As

Publication number Publication date
BE725913A (en) 1969-06-23
FR1595389A (en) 1970-06-08
JPS4833265B1 (en) 1973-10-12
NL6818523A (en) 1969-06-30
DE1816713A1 (en) 1969-07-24

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees