GB2306402A - Press tool - Google Patents

Press tool Download PDF

Info

Publication number
GB2306402A
GB2306402A GB9521814A GB9521814A GB2306402A GB 2306402 A GB2306402 A GB 2306402A GB 9521814 A GB9521814 A GB 9521814A GB 9521814 A GB9521814 A GB 9521814A GB 2306402 A GB2306402 A GB 2306402A
Authority
GB
United Kingdom
Prior art keywords
liner
press tool
tool according
press
tool
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.)
Withdrawn
Application number
GB9521814A
Other versions
GB9521814D0 (en
Inventor
Timothy Leslie Prosser
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.)
Insumat Ltd
Original Assignee
Insumat Ltd
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 Insumat Ltd filed Critical Insumat Ltd
Priority to GB9521814A priority Critical patent/GB2306402A/en
Publication of GB9521814D0 publication Critical patent/GB9521814D0/en
Publication of GB2306402A publication Critical patent/GB2306402A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/565—Consisting of shell-like structures supported by backing material
    • 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
    • B29C51/30—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68—Release sheets
    • 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
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

A press tool comprises a liner intended to contact and shape sheet material during pressing and a support means for supporting the liner. The liner is preferably readily replaceable and may comprise a sheet of plastics material such as polystyrene.

Description

PRESS TOOL This invention relates to a press tool particularly but not exclusively for shaping metal foil, such as textured stainless steel foil.
Previously known press tools have been manufactured from solid metal by casting and/or machining. Alternatively the tools have been manufactured from non-metallic resins or similar material. However such previously known press tools are slow and expensive to manufacture and modify and if nonmetallic tend to wear too quickly in use during the pressing process. The relatively large weight of such tools is also a disadvantage and if the tool material is not metallic but needs to be cured it is also difficult to predict material shrinkage during curing.
It is an object of the present invention to provide a press tool which substantially overcomes or alleviates the above disadvantages.
In accordance with the invention a press tool comprises a liner having a surface which is intended to contact and shape sheet material during pressing and a support means for supporting said liner.
Preferably the liner is easily and inexpensively manufactured, for example by vacuum forming, comprises a material which will not wear rapidly e.g a sheet of polystyrene, or other plastics material and has a relatively low coefficient of friction of its shaping surface which allows the material to be pressed e.g. metal foil to slide readily over it during pressing. For example when the liner comprises polystyrene and the metal foil is stainless steel the coefficient of friction is no greater than 0.45. Preferably also the liner is readily replaceable.
Preferably the support means comprises a filler material contained within an outer casing. The material is preferably sufficiently strong to resist the forces applied during pressing. Preferably the filler is chemically compatible with the liner material, does not generate heat during a curing process and can be repaired or replaced readily if required. Preferably also the material has a relatively low density and is inexpensive. Examples of suitable materials are epoxy resins reinforced with sand or metal particles.
The outer casing retains the filler material during fabrication of the tool and provides a suitable robust outer surface which can be utilised for mounting the tool in a press.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawing (Figure 1) showing a perspective view of a male tool and a female tool, part of the female tool being broken away.
As shown in Figure 1 a male tool (2) for fitment to the upper platen of a press (not shown) is positioned directly above a female tool (3) for fitment to the lower platen of the press (not shown). A sheet of textured stainless steel foil (not shown) typically 0.004" (0.1 mm) thick may be inserted generally horizontally between the two tools (2 and 3) so that when the press is closed the two tools (2 and 3) shape the foil as required.
Each tool (2 and 3) has substantially the same structure apart from the shaping surface, the shape of one surface being complementary to that of the other. Each comprises a liner of sheet plastics material such as polystyrene which has a shape formed by vacuum forming suitable for shaping the stainless steel foil. This liner (4) is backed by a filler (5) of epoxy resin reinforced with sand or metal particles contained in a strong outer casing (6).
In this embodiment the casing is a generally rectangular box of 9 ply plywood. The casing is secured to the respective upper or lower press platen.
The liner (4) has a high wear resistance and a large number of sheets of stainless steel may be pressed before any significant wear occurs. When the wear is significant then the liner (4) is replaced by a new liner but the original casing and filler material is retained. The liner (4) has a low coefficient of friction, no greater than 0.45 enabling the stainless steel (or other material) sheet to be easily slid into position between the two tools (2 and 3) prior to pressing.

Claims (9)

CLAIMS:
1. A press tool comprising a liner having a surface which is intended to contact and shape sheet material during pressing and a support means for supporting said liner.
2. A press tool according to Claim 1 wherein the liner is manufactured by vacuum forming.
3. A press tool according to Claim 1 or Claim 2 wherein the liner comprises a sheet of plastics material e.g. polystyrene.
4. A press tool according to Claim 3 wherein the liner material has a low rate of wear and a relatively low co-efficient of friction of its shaping surface.
5. A press tool according to any one of the preceding claims wherein the liner is replaceable.
6. A press tool according to any one of the preceding claims wherein the support means comprises a filler material contained within an outer casing.
7. A press tool according to Claim 6 wherein the filler material comprises a reinforced epoxy resin.
8. A press tool according to Claim 6 or 7 wherein the casing comprises a plywood box.
9. A press tool substantially as described herein with reference to and as shown in the accompanying drawing (Figure 1).
GB9521814A 1995-10-25 1995-10-25 Press tool Withdrawn GB2306402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9521814A GB2306402A (en) 1995-10-25 1995-10-25 Press tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9521814A GB2306402A (en) 1995-10-25 1995-10-25 Press tool

Publications (2)

Publication Number Publication Date
GB9521814D0 GB9521814D0 (en) 1996-01-03
GB2306402A true GB2306402A (en) 1997-05-07

Family

ID=10782862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9521814A Withdrawn GB2306402A (en) 1995-10-25 1995-10-25 Press tool

Country Status (1)

Country Link
GB (1) GB2306402A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823694A1 (en) * 2000-06-29 2002-10-25 Tachi S Co Thermal pressure die for heating and pressing trim cover assembly for automotive seat comprises uneven die surface provided with elastic, heat insulating protection sheet
EP1724098A1 (en) * 2005-05-20 2006-11-22 Carbo Tech Composites GmbH Process for the production of a laminated composite product and a composite product made by the lamination process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB486368A (en) * 1936-07-17 1938-06-02 Siegmund Sborowitz Pressing and stamping die for the manufacture of buttons, plaques brooches and similar articles
US3022231A (en) * 1959-07-27 1962-02-20 Frank W Broderick Method of producing matching embossing rolls
GB1355521A (en) * 1971-01-15 1974-06-05 British Ceramic Res Ass Die assemblies for pressing ceramic material
US4164537A (en) * 1974-09-30 1979-08-14 Drostholm F H Brick press and associated equipment for making bricks
EP0144541A2 (en) * 1983-09-14 1985-06-19 J. H. Benecke AG Method for the production of an engraved roller for continuously embossing the surface of a thermoplastic sheet with veins
GB2235415A (en) * 1989-08-17 1991-03-06 Wen Yuan Hsieh Molds for gold stamping

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB486368A (en) * 1936-07-17 1938-06-02 Siegmund Sborowitz Pressing and stamping die for the manufacture of buttons, plaques brooches and similar articles
US3022231A (en) * 1959-07-27 1962-02-20 Frank W Broderick Method of producing matching embossing rolls
GB1355521A (en) * 1971-01-15 1974-06-05 British Ceramic Res Ass Die assemblies for pressing ceramic material
US4164537A (en) * 1974-09-30 1979-08-14 Drostholm F H Brick press and associated equipment for making bricks
EP0144541A2 (en) * 1983-09-14 1985-06-19 J. H. Benecke AG Method for the production of an engraved roller for continuously embossing the surface of a thermoplastic sheet with veins
GB2235415A (en) * 1989-08-17 1991-03-06 Wen Yuan Hsieh Molds for gold stamping

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823694A1 (en) * 2000-06-29 2002-10-25 Tachi S Co Thermal pressure die for heating and pressing trim cover assembly for automotive seat comprises uneven die surface provided with elastic, heat insulating protection sheet
EP1724098A1 (en) * 2005-05-20 2006-11-22 Carbo Tech Composites GmbH Process for the production of a laminated composite product and a composite product made by the lamination process
US8057622B2 (en) 2005-05-20 2011-11-15 Carbo Tech Composites Gmbh Process for the production of a laminated composite product and a composite product made by the lamination process
US9676146B2 (en) 2005-05-20 2017-06-13 Mubea Carbo Tech Gmbh Process for the production of a laminated composite product and a composite product made by the lamination process

Also Published As

Publication number Publication date
GB9521814D0 (en) 1996-01-03

Similar Documents

Publication Publication Date Title
CA2580972C (en) Cut-off wheel comprising a double core clamping device
TW254989B (en) Decorative mold for forming concrete surface with uneven pattern and method of forming concrete surface with uneven pattern
US4601867A (en) Method of making cast-to-size epoxy tools for stamping sheet metal panels
US5061427A (en) Mold body for the deep drawing of foils and for casting of structural materials
DK0642894T3 (en) Three-dimensional surface shaping of synthetic foam substrates by a continuous rotation process
EP0246208A1 (en) A heat form pressed product and a method of heat form pressing
US5818005A (en) Electrical discharge machining electrode and rapid method for fabricating same
US4509358A (en) Urethane dies
TW359637B (en) Composite socket with double inserts
GB2306402A (en) Press tool
US6083448A (en) Method of bladder moulding thin articles made of a composite material using a conforming device
US20050279152A1 (en) Deforming tool and process for manufacturing thereof
EP0052380A2 (en) Tool for shaping articles
AU2004200706B2 (en) A method of strengthening of moulds
Afonso et al. A cost-effective methodology to perform customized moulding of cork agglomerates
CA2238269C (en) Ceramic polymer composite tool
US3734658A (en) Rapid release mold
WO2022155074A1 (en) Compression molding utilizing an elastomeric compression tool
CN216461045U (en) Color steel single tile plate production forming mechanism
JP2001071341A (en) Method for molding thermosetting resin, and molding
JPS55152108A (en) Sintered alloy brake block
GB2250703A (en) Forming or cutting press tools
Hofer et al. Stamping Azdel—A Reinforced Thermoplastic Sheet
CA1115631A (en) Plastic embossing caul
JPS5959411A (en) Compression molding method of soft material

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)