CA2011802A1 - Molding method and apparatus - Google Patents

Molding method and apparatus

Info

Publication number
CA2011802A1
CA2011802A1 CA2011802A CA2011802A CA2011802A1 CA 2011802 A1 CA2011802 A1 CA 2011802A1 CA 2011802 A CA2011802 A CA 2011802A CA 2011802 A CA2011802 A CA 2011802A CA 2011802 A1 CA2011802 A1 CA 2011802A1
Authority
CA
Canada
Prior art keywords
parison
mold
moving
blow pin
closing
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.)
Granted
Application number
CA2011802A
Other languages
French (fr)
Other versions
CA2011802C (en
Inventor
Changize Sadr
Danny Cacciacarro
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.)
ABC Technologies Inc
Original Assignee
ABC Group 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 ABC Group Inc filed Critical ABC Group Inc
Priority to CA002011802A priority Critical patent/CA2011802C/en
Publication of CA2011802A1 publication Critical patent/CA2011802A1/en
Application granted granted Critical
Publication of CA2011802C publication Critical patent/CA2011802C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • B29C49/4247—Means for deforming the parison prior to the blowing operation using spreading or extending means
    • 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
    • B29C33/76—Cores
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • B29C49/4247—Means for deforming the parison prior to the blowing operation using spreading or extending means
    • B29C49/425—Means for deforming the parison prior to the blowing operation using spreading or extending means rods or bars entering the preform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/703—Bellows

Abstract

ABSTRACT OF THE DISCLOSURE

In general, it is difficult to mold properly sized automotive boots without flash to be removed from the top end thereof. In accordance with the present invention, such molding is achieved placing a tubular parison between a pair of mold halves, moving a blow pin assembly downwardly partly into the top end of the parison, closing the mold by moving the mold halves together, using fingers to stretch the open bottom end of the parison, moving a sizing mandrel into the bottom end of the parison, closing inserts on the bottom of the mold around the bottom end of the parison to size the latter, blowing the parison using air under pressure discharged from the blow pin, moving the blow pin assembly farther down into the parison to size and cut the top end of the parison, opening the inserts and removing the lower sizing mandrel, opening the mold, closing the stretching fingers, and removing the blow pin assembly from the boot, which is stripped from the mold.
CA002011802A 1990-03-08 1990-03-08 Molding method and apparatus Expired - Lifetime CA2011802C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002011802A CA2011802C (en) 1990-03-08 1990-03-08 Molding method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002011802A CA2011802C (en) 1990-03-08 1990-03-08 Molding method and apparatus

Publications (2)

Publication Number Publication Date
CA2011802A1 true CA2011802A1 (en) 1991-09-08
CA2011802C CA2011802C (en) 1993-03-02

Family

ID=4144490

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002011802A Expired - Lifetime CA2011802C (en) 1990-03-08 1990-03-08 Molding method and apparatus

Country Status (1)

Country Link
CA (1) CA2011802C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006558A1 (en) * 1996-08-08 1998-02-19 Salflex Polymers Ltd. Improved boot and method of making such a boot
WO2012083422A1 (en) * 2010-12-02 2012-06-28 Salflex Polymers Limited Hollow article of variable wall structure density
WO2015024117A1 (en) * 2013-08-21 2015-02-26 Salflex Polymers Limited Flashless blow molding with one sized end-cuff

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006558A1 (en) * 1996-08-08 1998-02-19 Salflex Polymers Ltd. Improved boot and method of making such a boot
US5900205A (en) * 1996-08-08 1999-05-04 Salflex Polymers Ltd. Method for blow molding a CVJ boot
WO2012083422A1 (en) * 2010-12-02 2012-06-28 Salflex Polymers Limited Hollow article of variable wall structure density
US9038672B2 (en) 2010-12-02 2015-05-26 Salflex Polymers Limited Hollow article of variable wall structure density
WO2015024117A1 (en) * 2013-08-21 2015-02-26 Salflex Polymers Limited Flashless blow molding with one sized end-cuff

Also Published As

Publication number Publication date
CA2011802C (en) 1993-03-02

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202