WO2001066334A1 - Modular mould tools - Google Patents
Modular mould tools Download PDFInfo
- Publication number
- WO2001066334A1 WO2001066334A1 PCT/GB2001/000893 GB0100893W WO0166334A1 WO 2001066334 A1 WO2001066334 A1 WO 2001066334A1 GB 0100893 W GB0100893 W GB 0100893W WO 0166334 A1 WO0166334 A1 WO 0166334A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cup
- substance
- storage chamber
- inhalation
- modular
- Prior art date
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
- B29C2045/378—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings built by a stack of modular elements
Definitions
- This invention relates to a novel tooling method and novel process for use of such tools.
- production mould tools can normally be divided into three sections:
- moulds The purpose of these moulds is to allow for the production of high volume, low-cost components on automated injection mould machines.
- these tools are often complex and modifications can be difficult to make if further optimisation of the design is required.
- an injection moulding system comprising a modular bolster set provided with at least a pair of plates which can be stacked together to form a cavity, the plates include a feed and ejection system; and a cavity moulding set adapted for moulding of an article.
- the injection moulding system of the invention is especially suitable for the manufacture of small plastics devices e.g. medical devices, such as an inhalation device.
- the inhalation device manufactured by the system of the invention may comprise any conventionally known inhalation device, for example, a metered dose inhaler (MDI) and especially, a dry powder inhaler (DPI).
- MDI metered dose inhaler
- DPI dry powder inhaler
- DPIs examples include those currently available from Innovata Biomed in the UK under the Trade Marks CLICKHALER ® and TECHNOHALER ® .
- CLICKHALER is described in International Patent application No. WO 92/00771, which is incorporated herein by reference.
- TECHNOHALER is described in International Patent application No. WO93/16748 which is incorporated herein by reference.
- the cavity moulding set used in the system of the invention preferably comprises an assembly of plates and segments.
- the plates are preferably wire eroded plates.
- the plastics device may be a medical device, such as an inhalation device e.g. a DPI.
- the method comprises the manufacture of a CLICKHALER, for example, an inhaler comprising a body defining a storage chamber for a substance to be delivered and further defining an inhalation passage through which air is drawn via the mouthpiece; a metering member operable to transfer a volumetric dose of the substance from the storage chamber to the inhalation passage, the metering member having a metering surface which is indented to provide at least one dispensing cup and being moveable between a first position in which a dispensing cup is presented to the inhalation passage wherein in the second position the dispensing cup is upwardly open , the inhaler comprising cup clearing means which comprises means for moving each dispensing cup into a position form which any of the substance remaining in the dispensing cup would tend to fall, under the influence of gravity, out of the cup, after a dose of the substance has been presented in the cup to the inhalation passage and before the cup id again presented to the storage chamber.
- cup clearing means comprises means for moving each dispensing cup into
- the method comprises the manufacture of a TECHNOHALER, for example, apparatus for dispensing a plurality of desired volumetric doses of a flowable substance comprising a storage chamber for the substance and an outlet conduit communicating with the chamber, characterised by a plurality of metering devices, each metering device having first and second end elements adapted to seal against the inner walls of the conduit so as to define an intermediate dosing space of the desired dose volume and means for advancing the metering devices in series from within the storage chamber into the outlet conduit so as to cause substance surrounding each device in the storage chamber to pass with the device into the conduit in the respective dosing space.
- apparatus for dispensing a plurality of desired volumetric doses of a flowable substance comprising a storage chamber for the substance and an outlet conduit communicating with the chamber, characterised by a plurality of metering devices, each metering device having first and second end elements adapted to seal against the inner walls of the conduit so as to define an intermediate dosing space of the desired dose volume and means for advancing the meter
- the novel method of the invention resolves the difficulties involved with fabrication and the lead-times in producing traditional mould tools is to strip away the complex ejection and feed systems used in hardened mould tools. These are replaced with a modular bolster set which contains a common feed system and takes a cavity set which is assembled from wire eroded plates and segments.
- the cavity moulding set may be assembled by hand and loaded into the modular bolster set whilst in the press. Material e.g. plastics can then be then injected into the tool. When cooled the entire cavity moulding set removed by hand. The plates can then be dismantled, the component removed, the cavity reassembled and the process repeated.
- wire eroding allows plate mould tools to be produced rapidly with simple parts taking less than one day and even very complex forms taking only a week.
- the main advantages of this system are that parts can be moulded in the relevant production materials, designers can test and modify the moulded parts very quickly and finished devices can be assembled rapidly for early trials. Furthermore the pre- production tools can be produced with confidence as the moulded part has been tested, reducing the tooling development time.
- the method of invention is especially suited to the manufacture of small plastics medical devices, such as an inhalation device.
- the method of the invention is advantageous in that;
- Figure 2 is a perspective view of a cavity injection moulding system of the invention.
- an injection moulding system (1) of the prior art comprises a moving half (2) and a fixed half (3).
- the fixed half (3) is provided with an injection point and runner (4) and a component cavity (5).
- the moving half (2) is provided with an ejection point (6).
- the moving half (2) is also provided with a female connector (7) at each corner (8) adapted to engage with corresponding male connections (9) situated at each corner (10) of the fixed half (3).
- a plastics component (11) is also shown.
- a modular bolster set (12) comprises a tool block (13) and a plurality of stackable cavity plates (14) provided with an injection point and runner (15) and ejection pins (16).
- a plastics component (17) is also shown.
- TECHNOHALER is a new multi-unit dose powder inhaler currently under development by Innovata Biomed.
- the TECHNOHALER has a unique system for dispensing the powder, which allows a strip of spools to be pre-filled at the factory and then dispensed from a carousel in the device. This ensures a high accuracy in dosing as well as adding moisture protection to the individual dose. Proof of concept models were produced using the plate moulding technique described earlier. The availability of working prototypes of the device mechanism and casing allowed the engineering team to evaluate the design without the need for production of expensive pre-production mould tools.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01907963A EP1263564A1 (en) | 2000-03-04 | 2001-03-02 | Modular mould tools |
CA002401085A CA2401085A1 (en) | 2000-03-04 | 2001-03-02 | Modular mould tools |
JP2001564972A JP2003525782A (en) | 2000-03-04 | 2001-03-02 | Modular bolster device |
AU2001235828A AU2001235828A1 (en) | 2000-03-04 | 2001-03-02 | Modular mould tools |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0005201A GB0005201D0 (en) | 2000-03-04 | 2000-03-04 | Tooling methods |
GB0005201.9 | 2000-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001066334A1 true WO2001066334A1 (en) | 2001-09-13 |
Family
ID=9886943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/000893 WO2001066334A1 (en) | 2000-03-04 | 2001-03-02 | Modular mould tools |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1263564A1 (en) |
JP (1) | JP2003525782A (en) |
AU (1) | AU2001235828A1 (en) |
CA (1) | CA2401085A1 (en) |
GB (1) | GB0005201D0 (en) |
WO (1) | WO2001066334A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003031141A1 (en) * | 2001-10-10 | 2003-04-17 | Nolato Ab | Injection mould and method for making the same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60259420A (en) * | 1984-06-06 | 1985-12-21 | Fanuc Ltd | Mold for plastics |
US4792297A (en) * | 1987-09-28 | 1988-12-20 | Wilson Jerome L | Injection molding apparatus |
WO1992000771A1 (en) * | 1990-07-13 | 1992-01-23 | Innovata Biomed Limited | Inhaler |
WO1993016748A2 (en) * | 1992-02-21 | 1993-09-02 | Innovata Biomed Limited | Metering device |
CH686497A5 (en) * | 1992-04-13 | 1996-04-15 | Frederic Baillod | Injection mold. |
-
2000
- 2000-03-04 GB GB0005201A patent/GB0005201D0/en not_active Ceased
-
2001
- 2001-03-02 CA CA002401085A patent/CA2401085A1/en not_active Abandoned
- 2001-03-02 WO PCT/GB2001/000893 patent/WO2001066334A1/en not_active Application Discontinuation
- 2001-03-02 JP JP2001564972A patent/JP2003525782A/en active Pending
- 2001-03-02 AU AU2001235828A patent/AU2001235828A1/en not_active Abandoned
- 2001-03-02 EP EP01907963A patent/EP1263564A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60259420A (en) * | 1984-06-06 | 1985-12-21 | Fanuc Ltd | Mold for plastics |
US4792297A (en) * | 1987-09-28 | 1988-12-20 | Wilson Jerome L | Injection molding apparatus |
WO1992000771A1 (en) * | 1990-07-13 | 1992-01-23 | Innovata Biomed Limited | Inhaler |
WO1993016748A2 (en) * | 1992-02-21 | 1993-09-02 | Innovata Biomed Limited | Metering device |
CH686497A5 (en) * | 1992-04-13 | 1996-04-15 | Frederic Baillod | Injection mold. |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 10, no. 134 (M - 479) 17 May 1986 (1986-05-17) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003031141A1 (en) * | 2001-10-10 | 2003-04-17 | Nolato Ab | Injection mould and method for making the same |
US6796016B2 (en) | 2001-10-10 | 2004-09-28 | Nolato Ab | Injection mould and method for making the same |
Also Published As
Publication number | Publication date |
---|---|
GB0005201D0 (en) | 2000-04-26 |
AU2001235828A1 (en) | 2001-09-17 |
EP1263564A1 (en) | 2002-12-11 |
JP2003525782A (en) | 2003-09-02 |
CA2401085A1 (en) | 2001-09-13 |
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