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WO1992005027A1 - Dispositif de moulage, procede de production d'un conteneur et conteneur produit selon ce procede - Google Patents

Dispositif de moulage, procede de production d'un conteneur et conteneur produit selon ce procede Download PDF

Info

Publication number
WO1992005027A1
WO1992005027A1 PCT/NL1991/000182 NL9100182W WO9205027A1 WO 1992005027 A1 WO1992005027 A1 WO 1992005027A1 NL 9100182 W NL9100182 W NL 9100182W WO 9205027 A1 WO9205027 A1 WO 9205027A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
container
jaws
mould device
welding
Prior art date
Application number
PCT/NL1991/000182
Other languages
English (en)
Inventor
Theodorus Franciscus Hendriks
Original Assignee
Koninklijke Emballage Industrie Van Leer B.V.
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 Koninklijke Emballage Industrie Van Leer B.V. filed Critical Koninklijke Emballage Industrie Van Leer B.V.
Priority to JP3516547A priority Critical patent/JPH06502596A/ja
Publication of WO1992005027A1 publication Critical patent/WO1992005027A1/fr

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
    • B29C49/56—Opening, closing or clamping means
    • B29C49/5605—Hydraulically operated, i.e. closing or opening of the mould parts is done by hydraulic 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
    • 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
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4817—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity with means for closing off parison ends
    • 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
    • B29C33/20—Opening, closing or clamping
    • B29C33/26—Opening, closing or clamping by pivotal movement

Definitions

  • Mould device process for the production of a container and container produc by this process.
  • the present invention relates to a mould device according to the preamble of Claim 1.
  • a mould device is known from US Patent
  • the object of the present application is to provide with simple means a construction with which it is possible to make the weld in a more uniform manner.
  • the present invention provides a particularly simple design of the control devices, which is also found to be very effective.
  • a complex guide system as in the US Patent Specification 3,478,388, is not necessary, while it is still always ensured that the welding edges of the jaws do not touch each other, but are moved in a controlled manner.
  • spring devices are fitted between the welding jaws and the carrier plates, which devices drive the jaws into a position outside the boundary of the carrier plates. When the carrier plates are moved towards each other during closure of the jaws the desired closing action is automatically obtained. This movement can be further synchronised by coupling together at least two jaws.
  • each carrier plate comprises two welding jaws accom- modated in the carrier plate concerned.
  • the four welding jaws in the closed position bound a cross between them, so that a container with two intersecting welds at right angles to each other is obtained. It has been found that such a particularly simple design has the advantage of container bottoms with more than one weld, i.e. is less susceptible to cracking, and such a device is still relatively cheap to produce.
  • the jaws comprise a convex surface directed towards the inside of the container. This makes it possible to produce a bottom of the container which is curved inwards more towards the centre of the container. As is known, such a bottom has greater strength, and provides placing means in a simple manner, so that the container is suitable without further measures for placing on a table or the like.
  • means are present for moving the bottom mould and the top mould relative to each other. This is particu ⁇ larly important if the jaws have a convex surface directed towards the inside of the container, in order to facilitate the discharge of the container after blow- moulding thereof.
  • the invention also relates to a process for blow- moulding a container, comprising insertion of a parison into an opened mould device, closure of the mould device during blowing, opening of the mould device, and removal of the container.
  • a process for blow- moulding a container comprising insertion of a parison into an opened mould device, closure of the mould device during blowing, opening of the mould device, and removal of the container.
  • the top and bottom moulds are moved apart after blowing of the container, and the top and bottom moulds are moved towards each other after removal of the container.
  • the invention also relates to a container made by blow-moulding a parison, comprising a bottom part pro- vided with welds of parts of the parison pressed against each other, which welds are produced on the outside of the bottom.
  • the object of this is to provide less material at the site of the welds, in order in this way to obtain fewer major changes in material thickness, as a result of which the susceptibility to cracking of the container obtained is reduced.
  • the bottom of the container in this case prefer ⁇ ably curves inwards towards the centre.
  • Fig. 1 shows the mould device according to the invention, in the open position
  • Fig. 2 shows the mould device according to Fig. 1, in the closed position
  • Fig. 3 shows in bottom view the bottom mould, in the open position
  • Fig. 4 shows in bottom view the bottom mould, in the closed position; and Fig. 5 shows a perspective bottom view of the container made with the mould device according to the above figures.
  • Fig. 1 the mould device according to the invention is shown in its entirety by 1.
  • the top part of the mould device for forming the neck of the container is not shown, as can be seen from the break lines 2.
  • the mould device 1 comprises a frame 3 inside which a top mould comprising mould halves 4a and 4b and a bottom mould comprising mould halves 5a and 5b are fitted.
  • Top mould halves 4a, 4b are disposed so that they slide up and down in a sub-frame 6. Operation is by means of hydraulic cylinders.
  • Bottom mould halves 5a and 5b are fixed to the sub-frame 6.
  • Sub-frame 6 is also provided with hydraulic means 8 for moving the mould halves towards each other, which hydraulic means 8 engage at the other side on the frame 3.
  • the mould device is shown in the open position, in which the top mould and the bottom mould have been moved apart by the hydraulic cylinders 7.
  • Fig. 2 the mould is shown in the closed position through the outward movement of the hydraulic cylinder 8, while the top mould and the bottom mould are moved towards each other by operating the hydraulic cylinder 7.
  • Fig. 3 the bottom mould part is shown in bottom view in the open position. It can be seen that it comprises carrier plates 10 fixed to sub-frame 6. Pins 11, fixed to carrier plates 10, hingedly accommodate hinged jaws 12. Springs 19 drive welding jaws 12 into the position shown in Fig. 3. One of each pair of hinged jaws in a carrier plate is connected to a control rod 13.
  • This control rod is provided with a slit-shaped opening 14 in which a pin 15 of the other control jaws engages, so that movement of the control jaws is coupled.
  • the other end of control arm 13 is provided with a roller 16 acting on the opposite carrier plate, as shown in Fig. 3.
  • Fig. 4 shows the closed position of the bottom mould halves, with the carrier plates 10 lying opposite each other. It can be seen that moving the front faces of the carrier plates 10 towards each other causes the rollers 16, and thus the control arms 13 to move inwards, thus closing the jaws 12. Of course, the opposite faces of the jaws 12 in Fig. 4 lie against each other.
  • a parison is inserted by some manner known in the state of the art into the mould cavity bounded by the mould halves.
  • This can be a tubular extruded product (parison) coming directly from an extruder.
  • Such a parison extends past the welding jaws 12.
  • the mould halves are then moved towards each other during blowing.
  • the welding jaws will move out of the position shown in Fig. 3 into the position shown in Fig. 4.
  • the tubular parison will be pinched shut on the bottom side from four sides.
  • This movement is adapted to the slope of the upright inward curved bottom part of the container in such a way that the part of the bottom mould engaging thereon slides along it downwards. If a flat or outward curve is being produced, the mutual movement between the top mould and the bottom mould and the control mechanisms involved can be omitted. Through the presence of the control arm 13 it is ensured that even if, unexpectedly, no parison is present inside the mould halves, jaws 12 cannot hit each other, which could result in damage. The closing movement is controlled entirely by the control arm 13.
  • the process described above is suitable in particular for processing extruded materials such as polycarbonate which rapidly becomes fluid when there is a rise in temperature and becomes difficult to process. If in particular laminates are used, changes in thickness are particularly important.
  • the container obtained by the process according to the present invention is shown in Fig. 5. It is indicated in its entirety by 20 and has a bottom 21 provided with V-shaped ribs 22. They are provided cross ⁇ wise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Dispositif de moulage et procédé d'extrusion-soufflage d'un conteneur. Afin d'obtenir des soudures dans la partie centrale du conteneur, le dispositif de moulage comprend des demi-moules inférieurs (10), deux mâchoires de soudage articulées (12) équipant toujours chaque demi-moule. Ces mâchoires de soudage sont commandées par des bras (13) venant au contact du demi-moule opposé, de manière que lors de la fermeture des demi-moules lesdites mâchoires de soudage exécutent le mouvement voulu.
PCT/NL1991/000182 1990-09-24 1991-09-20 Dispositif de moulage, procede de production d'un conteneur et conteneur produit selon ce procede WO1992005027A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3516547A JPH06502596A (ja) 1990-09-24 1991-09-20 モールド装置、容器の製造方法および前記方法により製造される容器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002084 1990-09-24
NL9002084A NL9002084A (nl) 1990-09-24 1990-09-24 Matrijsinrichting en werkwijze voor het vervaardigen van een houder alsmede een volgens deze werkwijze vervaardigde houder.

Publications (1)

Publication Number Publication Date
WO1992005027A1 true WO1992005027A1 (fr) 1992-04-02

Family

ID=19857720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1991/000182 WO1992005027A1 (fr) 1990-09-24 1991-09-20 Dispositif de moulage, procede de production d'un conteneur et conteneur produit selon ce procede

Country Status (4)

Country Link
EP (1) EP0572407A1 (fr)
JP (1) JPH06502596A (fr)
NL (1) NL9002084A (fr)
WO (1) WO1992005027A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022868A3 (fr) * 1995-01-18 1997-05-09 White Consolidated Ind Inc Appareil de moulage muni de mecanismes de deplacement de type navette et de verrouillage
FR2766171A1 (fr) * 1997-07-15 1999-01-22 Saint Gobain Emballage Moule a tiroir pivotant
KR100708830B1 (ko) * 2002-08-06 2007-04-18 가부시키가이샤 요시노 고교쇼 블로 성형품
EP3225379A4 (fr) * 2014-11-28 2018-05-30 Yoshino Kogyosho Co., Ltd. Paraison pour moulage par soufflage étirage biaxial, récipient, procédé de production d'une paraison pour moulage par soufflage étirage biaxial, et procédé de production de récipient
JP2019099201A (ja) * 2017-11-30 2019-06-24 株式会社吉野工業所 キャップ螺着用の広口容器及びその製造方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1069572C (zh) * 1999-04-29 2001-08-15 蔡桂森 塑料成型合模机构
CN101678912B (zh) * 2008-02-29 2013-01-16 株式会社吉野工业所 吹塑成形容器的成形方法
JP5246480B2 (ja) * 2008-05-29 2013-07-24 株式会社吉野工業所 ブロー成形容器と成形方法
JP5602601B2 (ja) * 2010-11-30 2014-10-08 株式会社吉野工業所 積層剥離容器及びその製造方法、並びにこれに用いるブロー成形用の金型

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1165625A (en) * 1966-07-12 1969-10-01 Interstabella Ag Hollow Articles and Apparatus for their Manufacture.
US3478388A (en) * 1966-11-21 1969-11-18 Phillips Petroleum Co Apparatus for blow molding,cutting and sealing
US3621525A (en) * 1969-08-18 1971-11-23 Phillips Petroleum Co Pivotal bottom inserts for blow molding mold
US3753641A (en) * 1969-12-22 1973-08-21 Continental Can Co Mold for articles having undercut portions
US3861845A (en) * 1972-11-21 1975-01-21 Phillips Petroleum Co Four bar linkage for inserts for blow molding molds
EP0355437A1 (fr) * 1988-08-15 1990-02-28 General Electric Company Etranglement d'objets moulés par extrusion-soufflage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1165625A (en) * 1966-07-12 1969-10-01 Interstabella Ag Hollow Articles and Apparatus for their Manufacture.
US3478388A (en) * 1966-11-21 1969-11-18 Phillips Petroleum Co Apparatus for blow molding,cutting and sealing
US3621525A (en) * 1969-08-18 1971-11-23 Phillips Petroleum Co Pivotal bottom inserts for blow molding mold
US3753641A (en) * 1969-12-22 1973-08-21 Continental Can Co Mold for articles having undercut portions
US3861845A (en) * 1972-11-21 1975-01-21 Phillips Petroleum Co Four bar linkage for inserts for blow molding molds
EP0355437A1 (fr) * 1988-08-15 1990-02-28 General Electric Company Etranglement d'objets moulés par extrusion-soufflage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022868A3 (fr) * 1995-01-18 1997-05-09 White Consolidated Ind Inc Appareil de moulage muni de mecanismes de deplacement de type navette et de verrouillage
FR2766171A1 (fr) * 1997-07-15 1999-01-22 Saint Gobain Emballage Moule a tiroir pivotant
WO1999003788A1 (fr) * 1997-07-15 1999-01-28 Saint-Gobain Emballage Moule a tiroir pivotant
US6212911B1 (en) * 1997-07-15 2001-04-10 Saint-Gobain Emballage Mould with pivoting drawer
KR100708830B1 (ko) * 2002-08-06 2007-04-18 가부시키가이샤 요시노 고교쇼 블로 성형품
EP1541475A4 (fr) * 2002-08-06 2007-12-26 Yoshino Kogyosho Co Ltd Produit moule par soufflage
EP3225379A4 (fr) * 2014-11-28 2018-05-30 Yoshino Kogyosho Co., Ltd. Paraison pour moulage par soufflage étirage biaxial, récipient, procédé de production d'une paraison pour moulage par soufflage étirage biaxial, et procédé de production de récipient
JP2019099201A (ja) * 2017-11-30 2019-06-24 株式会社吉野工業所 キャップ螺着用の広口容器及びその製造方法

Also Published As

Publication number Publication date
NL9002084A (nl) 1992-04-16
EP0572407A1 (fr) 1993-12-08
JPH06502596A (ja) 1994-03-24

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