CA2375903C - Ejecteurs a ressort pour moulage de copeaux de bois - Google Patents

Ejecteurs a ressort pour moulage de copeaux de bois Download PDF

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Publication number
CA2375903C
CA2375903C CA002375903A CA2375903A CA2375903C CA 2375903 C CA2375903 C CA 2375903C CA 002375903 A CA002375903 A CA 002375903A CA 2375903 A CA2375903 A CA 2375903A CA 2375903 C CA2375903 C CA 2375903C
Authority
CA
Canada
Prior art keywords
mold
ejector pin
housing
mat
wood
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 - Fee Related
Application number
CA002375903A
Other languages
English (en)
Other versions
CA2375903A1 (fr
Inventor
Bruce A. Haataja
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.)
Strandwood Molding Inc
Original Assignee
Strandwood Molding Inc
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 Strandwood Molding Inc filed Critical Strandwood Molding Inc
Publication of CA2375903A1 publication Critical patent/CA2375903A1/fr
Application granted granted Critical
Publication of CA2375903C publication Critical patent/CA2375903C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • B29K2311/14—Wood, e.g. woodboard or fibreboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention concerne un appareil de moulage (20) et un procédé permettant de produire et de démouler des produits manufacturés moulés, incurvés, tridimensionnels, constitués de copeaux de bois, lesdits produits étant moulés à partir d'une couche de copeaux (30) faiblement feutrée. Le démoulage s'effectue au moyen d'un ensemble tiges d'éjection (10) se trouvant à l'intérieur dudit appareil de moulage (20), présentant des tiges d'éjection (11) dont les têtes (12) ont des diamètres d'au moins environ 0,750 pouces ou plus, lesdites tiges exerçant une pression de tige d'éjection à ressort d'une valeur allant d'environ 100 psi à environ 1000 psi, afin d'éjecter de l'appareil de moulage (20), le produit moulé de copeaux de bois (30'), sans provoquer la formation excessive d'empreintes ni la densification à l'intérieur de la couche durant le processus de moulage.
CA002375903A 2000-05-30 2000-05-30 Ejecteurs a ressort pour moulage de copeaux de bois Expired - Fee Related CA2375903C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/014710 WO2001091986A1 (fr) 2000-05-30 2000-05-30 Ejecteurs a ressort pour moulage de copeaux de bois

Publications (2)

Publication Number Publication Date
CA2375903A1 CA2375903A1 (fr) 2001-12-06
CA2375903C true CA2375903C (fr) 2006-02-21

Family

ID=21741427

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002375903A Expired - Fee Related CA2375903C (fr) 2000-05-30 2000-05-30 Ejecteurs a ressort pour moulage de copeaux de bois

Country Status (2)

Country Link
CA (1) CA2375903C (fr)
WO (1) WO2001091986A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896680A (zh) * 2012-08-14 2013-01-30 宁波大世界家具研发有限公司 一种用于木纤维模压件的组合模具及其模压方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE2250741A1 (en) * 2022-06-17 2023-12-18 Pulpac AB Ejection element, forming mould comprising an ejection element and method for forming cellulose products
SE2250742A1 (en) * 2022-06-17 2023-12-18 Pulpac AB Deformation element, forming mould comprising a deformation element and method for forming cellulose products
SE2250829A1 (en) * 2022-07-01 2024-01-02 Pulpac AB Forming mould comprising a movable element and method for forming cellulose products

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975127A (en) * 1973-02-28 1976-08-17 Furnier-Und Sperrholzwerk J. F. Werz, Jr. Kg Werzalit-Pressholzwerk Apparatus for making shaped articles
BG18244A1 (fr) * 1973-04-25 1974-10-25
US4440708A (en) * 1978-12-21 1984-04-03 Board Of Control Of Michigan Technological University Method for molding articles having non-planar portions from matted wood flakes
US4351789A (en) * 1981-07-27 1982-09-28 The B. F. Goodrich Company Mold and process for molding
US5059372A (en) * 1987-04-16 1991-10-22 Klais Guenter Process and apparatus for producing compressed solid briquettes
CA1299831C (fr) * 1988-05-16 1992-05-05 James Simon Sheffield Moule comportant un dispositf pour l'ejection des objets moules et un espacea ressort
JP2971774B2 (ja) * 1995-03-20 1999-11-08 日本碍子株式会社 高分子材料成形型の離型治具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896680A (zh) * 2012-08-14 2013-01-30 宁波大世界家具研发有限公司 一种用于木纤维模压件的组合模具及其模压方法
CN102896680B (zh) * 2012-08-14 2015-02-18 宁波大世界家具研发有限公司 一种用于木纤维模压件的组合模具及其模压方法

Also Published As

Publication number Publication date
WO2001091986A1 (fr) 2001-12-06
CA2375903A1 (fr) 2001-12-06

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