EP0658137A1 - Moule a serrage rapide pour appareil de moulage - Google Patents

Moule a serrage rapide pour appareil de moulage

Info

Publication number
EP0658137A1
EP0658137A1 EP93918542A EP93918542A EP0658137A1 EP 0658137 A1 EP0658137 A1 EP 0658137A1 EP 93918542 A EP93918542 A EP 93918542A EP 93918542 A EP93918542 A EP 93918542A EP 0658137 A1 EP0658137 A1 EP 0658137A1
Authority
EP
European Patent Office
Prior art keywords
mold
tooling
fact
modular assembly
compressed air
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Withdrawn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
EP93918542A
Other languages
German (de)
English (en)
Other versions
EP0658137A4 (fr
Inventor
Massenzio Baldi
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.)
Hoover Universal Inc
Original Assignee
Hoover Universal 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 Hoover Universal Inc filed Critical Hoover Universal Inc
Publication of EP0658137A1 publication Critical patent/EP0658137A1/fr
Publication of EP0658137A4 publication Critical patent/EP0658137A4/fr
Withdrawn legal-status Critical Current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
    • 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
    • B29C49/48—Moulds
    • B29C49/50—Moulds having cutting or deflashing 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/006—Handling moulds, e.g. between a mould store and a moulding machine
    • 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
    • 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
    • B29C49/48—Moulds
    • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
    • 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

Definitions

  • This invention relates to a quick change mold tooling arrangement for blow molding apparatus used for producing hollow plastic articles.
  • blow molding machines for producing hollow plastic articles include at least one mold having a mold cavity with the shape of the article to be produced, the mold being adapted to be opened and closed.
  • the mold is opened to receive a preform or parison and then closed.
  • compressed air is introduced into the parison contained within the mold through a compressed air feed inlet and a corresponding feed nozzle to carry out the blowing of the parison which is expanded and conformed to the inner wall of the mold cavity to acquire the desired shape.
  • the blow molding machine includes at least one nest or dolly, divided in two sections, that holds the article after being blown and when it has been released by the mold.
  • the machine further includes trim tooling for removing the flash from the article.
  • the machine includes several feed lines for supplying cooling water to the mold and lines for supplying compressed air to the nozzles.
  • the following operations are required to change the mold and associated accessories: disassemble the group of dollies; disassemble the trim tooling; disconnect the cooling lines of the water cooling system for the molds; disassemble the molds; disconnect the compressed air lines; disassemble the air feed nozzles; reassemble the new tooling; adjust the center distance between the mold and the nest or dolly in the new tooling; adjust the position of the trim tooling in the new tooling; and align the axis of the air feed nozzles with that of the compressed air inlets in the new mold.
  • the object of the invention is to eliminate the above- mentioned inconveniences and to simplify the assembly and the disassembly associated with the replacement of the molds and associated tooling in a blow molding machine for producing hollow plastic articles.
  • a modular tooling assembly which includes a mold, a nest or dolly, and trim tooling for the removal of the flash, wherein the mold, the nest and the trim tooling are assembled to two parallel opposing plates, which are adapted to be moved apart, which make up the modular assembly that facilitates mold replacement, and wherein the blowing nozzles are mounted on a removable self-bearing support.
  • the advantages are represented by the very easy and fast replacement of molds and associated tooling due to the fact that the number of operations and adjustment to be carried out is drastically reduced; to the fact that such a replacement can be also performed by nonspecialized personnel, resulting in significant reduction in the operative costs of the working station; and by the fact that automation of the mold replacement is possible especially in the case of machine for high capacity production.
  • FIG. 1 is a perspective view of a modular tooling assembly for quick change of molds, including a mold having a single air feed inlet, with the mold shown in the closed condition;
  • FIG. 2 a perspective view of the modular tooling assembly for quick change of molds of FIG. 1, but with the mold shown in the open condition;
  • FIG. 3 is a perspective view of a support with two nozzles for a mold having two air feed inlets
  • FIG. 4 is a cross-section view of the nozzle holding support of FIG. 3.
  • the modular tooling arrangement for quick change of molds and associated accessories in a blow molding machine for producing hollow plastic articles includes a mold 2 adapted to be opened and closed, the mold having a compressed air feed inlet 20 for the introduction of compressed air through a corresponding blow pin or nozzle 4; a nest or dolly 5 that can be opened to receive a blown article and to hold the blown article 31 after it has been released by the mold 2; and a two-part trim tooling or hollow punches 6 for the removal of the flash.
  • the two parts of the mold 2 and the nest 5 and the trim tooling 6 are fixed to two external widely spaced apart, parallel opposing supporting plates 10 so as to provide a modular assembly or monoblock group 1 which is made movable lenythwise by the corresponding carriage 50 of the machine.
  • the distance "a" between the vertical axis of the compressed air feed inlet 20 engages of the mold 2 and the median vertical axis of the nest 5 is preset, that is, adjusted before the modular assembly 1 is assembled on the machine.
  • the nozzle 4 is mounted on a removable, self- bearing support 40 as shown in FIG. 3.
  • such a support 40 is made up with a frame including a removably mounted plate 41 which is connected at the top to a fixed part or section 100 of the machine, and at the bottom to four vertical rods 44 for guiding another plate 42 on whose back 410 there is the head of the stem of a corresponding operating cylinder 110 having a vertical axis, the lower side 420 of which is in contact with the base of the nozzle 4 so as to allow the actuation, that is the insertion into and the withdrawal from, the compressed air feed inlet 20 of the mold 2.
  • a third plate 43 equipped with a guide boss 45 for the stem of the nozzle 4 is fixed to the lower ends of the above- mentioned vertical rods 44.
  • the position of the nozzle 4 with respect to the compressed air feed inlet 20 of the corresponding mold 2 is preset. In other words, it is adjusted before the modular assembly 1 and the support 40 are assembled on the machine.
  • the trim tooling 6 are coupled to means of motion in an orthogonal direction with respect to that the direction of translation x-x of the modular assembly 1.
  • these means of motion of the trim tooling 6 include a cylindrical actuator 60 with its axis orthogonal to the motion of translation x-x of the modular assembly 1.
  • trim tooling 6 are assembled on an independent carriage, not illustrated, which is adapted to be assembled and replaced along the modular assembly 1.
  • the water lines 21 for cooling water and air lines for compressed air are disconnected, and then the whole modular assembly 1 is removed, without disassembling each component.
  • a new modular assembly, with an associated mold 2 , nest 5 and trim tooling 6, is mounted in its place.
  • the support 40 for the nozzle 4 is totally replaced with no need for disassembling each component and no need for a new adjustment of the position of the nozzle 4 with respect to the compressed air feed inlet 20.
  • this invention contemplates an embodiment of a mold 2 with two compressed air inlets 20 for the introduction of compressed air, which is fed through two corresponding blow pins or nozzles 4 in order to allow, for example, the simultaneous blowing of two articles in two separate and distinct mold cavities.
  • the number of compressed air inlets 20 of a mold 2 and associated blowing nozzles 4 may vary according to the size and shape of the item being manufactured.
  • the plates 10 which support the mold 2, the nest 5 and the trim tooling 6 are equipped with two connectors 21 for the quick connection of the water lines to the cooling water system.
  • the plates are also equipped with several parallel, transversely extending plugs or guide rods 11 which represent elements of guidance and linkage to corresponding drive means 70 that moves the plates 10 apart and together.
  • the machine When in operation, the machine functions as follows. After the preform or parison 31 has been blown and solidified inside the mold 2, the plates 10 are moved apart and the article 31, with associated flash 32 still attached, hangs from the opening of the nozzle 4.
  • the carriage 50 is activated so as to move the modular assembly 1 as a unit.
  • the nest is positioned in correspondence with the nozzle 4. At this stage, the plates 10 are moved together, or closed, and the nest 5 holds the article 31. At the same time, the nozzle is lifted and is separated from the article. After the plates are closed, the cylinder 60 activates the trim tooling 6 which push or knock the flash 32 from the article.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Robotics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un outillage permettant le serrage rapide de moules ainsi que les accessoires associés utilisés dans une machine pour l'extrusion-soufflage d'articles en plastique creux ou d'articles tels qu'un moule (2) qui peut être ouvert. Ledit outillage comprend un orifice d'alimentation (20) servant à introduire de l'air comprimé, un injecteur d'air (4) dans lequel passe l'air comprimé, une poche (5) servant à tenir l'article (31) après qu'il ait été produit et libéré par le moule, un dispositif d'ébarbage (6) destiné à enlever les bavures (32), le moule, la poche et le dispositif d'ébarbage étant supportés par deux plaques de support (10) opposées parallèles et formant un ensemble modulaire (I) déplaçable longitudinalement par un chariot correspondant (50). De plus, l'injecteur d'air permettant d'introduire de l'air comprimé dans le moule est monté sur un support mobile autoporteur (40).
EP93918542A 1992-07-31 1993-07-30 Moule a serrage rapide pour appareil de moulage. Withdrawn EP0658137A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITFI920156A IT1259675B (it) 1992-07-31 1992-07-31 Attrezzaggio per il cambio rapido degli stampi e dei relativi accessori in una macchina per la soffiatura di corpi cavi in materialeplastico
ITFI920156 1992-07-31
PCT/US1993/007210 WO1994003320A1 (fr) 1992-07-31 1993-07-30 Moule a serrage rapide pour appareil de moulage

Publications (2)

Publication Number Publication Date
EP0658137A1 true EP0658137A1 (fr) 1995-06-21
EP0658137A4 EP0658137A4 (fr) 1996-11-27

Family

ID=11350189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918542A Withdrawn EP0658137A4 (fr) 1992-07-31 1993-07-30 Moule a serrage rapide pour appareil de moulage.

Country Status (5)

Country Link
EP (1) EP0658137A4 (fr)
AU (1) AU4795893A (fr)
CA (1) CA2139838A1 (fr)
IT (1) IT1259675B (fr)
WO (1) WO1994003320A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720678A1 (fr) * 1994-06-03 1995-12-08 Sidel Sa Dispositif de fixation d'une tige d'élongation sur une machine de fabrication de récipients par étirage et soufflage de préformes en matière plastique et machine pourvue d'un tel dispositif.
FR2733176B1 (fr) 1995-04-19 1997-06-27 Sidel Sa Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage
US6447281B1 (en) 1998-09-11 2002-09-10 Sidel, Inc. Blow mold shell and shell holder assembly for blow-molding machine
US6648623B2 (en) 1999-02-05 2003-11-18 Sidel, Inc. Quick change blow mold shell assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE731522A (fr) * 1968-04-26 1969-09-15
US3659998A (en) * 1970-05-25 1972-05-02 Hayssen Mfg Co Blow-molding machines
US4552526A (en) * 1983-07-18 1985-11-12 Hoover Universal, Inc. Blow molding machine with mold shuttle structure

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KUNSTSTOFFE EUROPE, no. 1, 1 May 1990, MUNICH, pages 62-64, 66, 68 - 72, XP000288680 AST W: "BLOW MOULDING" *
PLASTVERARBEITER, vol. 41, no. 11, 1 November 1990, pages 81-82, XP000294789 "UMRUESTZEITEN VERKUERZT, EINRICHTEN ERLEICHTERT" *
See also references of WO9403320A1 *

Also Published As

Publication number Publication date
ITFI920156A0 (it) 1992-07-31
CA2139838A1 (fr) 1994-02-17
ITFI920156A1 (it) 1994-01-31
IT1259675B (it) 1996-03-25
AU4795893A (en) 1994-03-03
EP0658137A4 (fr) 1996-11-27
WO1994003320A1 (fr) 1994-02-17

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