[go: up one dir, main page]

WO2015031990A1 - Dispositif de transport d'articles moulés - Google Patents

Dispositif de transport d'articles moulés Download PDF

Info

Publication number
WO2015031990A1
WO2015031990A1 PCT/CA2014/050816 CA2014050816W WO2015031990A1 WO 2015031990 A1 WO2015031990 A1 WO 2015031990A1 CA 2014050816 W CA2014050816 W CA 2014050816W WO 2015031990 A1 WO2015031990 A1 WO 2015031990A1
Authority
WO
WIPO (PCT)
Prior art keywords
molded articles
conveyor
molded
shot
article conveyance
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.)
Ceased
Application number
PCT/CA2014/050816
Other languages
English (en)
Inventor
Carleton David Robert BANKS
Peter Adrian Looije
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.)
Husky Injection Molding Systems Ltd
Husky Injection Molding Systems SA
Original Assignee
Husky Injection Molding Systems Ltd
Husky Injection Molding Systems SA
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 Husky Injection Molding Systems Ltd, Husky Injection Molding Systems SA filed Critical Husky Injection Molding Systems Ltd
Publication of WO2015031990A1 publication Critical patent/WO2015031990A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B29C45/1769—Handling of moulded articles or runners, e.g. sorting, stacking, grinding of runners
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/768—Detecting defective moulding conditions
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/7629—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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/76314—Auxiliary devices
    • B29C2945/76321—Auxiliary devices conveyors
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76344—Phase or stage of measurement
    • B29C2945/76421—Removing or handling ejected 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76344—Phase or stage of measurement
    • B29C2945/76438—Start up

Definitions

  • TECHNICAL FIELD Non-Limiting embodiments disclosed herein generally relate to a molded article conveyance device for a molding machine, and a related method of molding.
  • a molded article conveyance device for use with an injection molding machine that includes a conveyor for receiving shots of molded articles that are molded in the injection molding machine, a sample device, and a director that is configurable to selectively direct a selected shot of molded articles, at least in part, into the sample device.
  • the method broadly includes successively molding shots of molded articles in the injection molding machine and depositing them onto a conveyor of the molded article conveyance device.
  • the method includes conveying the shots of molded articles towards a downstream structure.
  • the method includes selectively sampling a selected shot of molded articles, at least in part, with selective reconfiguring of a director to direct the selected shot of molded articles into a sample device.
  • FIGS. 1-4 depict a conceptual representation of a non-limiting operational sequence of an injection molding system that includes a molded article conveyance device
  • FIGS. 5-7 depict a more detailed view of the construction and operation of the molded article conveyance device shown in FIGS. 1-4;
  • FIG. 8 depicts a flow chart of operational steps of a non- limiting embodiment of method of molding
  • FIGS. 9-11 depict a conceptual representation of a non-limiting operational sequence of an injection molding system that includes various alternate non-limiting embodiments of the molded article conveyance device.
  • FIG. 12A depicts a schematic representation of an arrangement of cavities in a mold;
  • FIG. 12B depicts a schematic representation of an arrangement of holders on a retrieval tool.
  • Injection mold machines can be used to form various molded articles using an injection molding process.
  • a molded article that can be formed, for example, from Polyethylene Teraphalate (PET) molding material is a preform that is capable of being subsequently blown into a container, such as a beverage bottle or the like.
  • Injection molding of molding material involves heating the molding material (e.g.. PET pellets, etc.) to a homogeneous molten state and injecting, under pressure, the melted PET material into mold cavities of a closed mold to form a group of molded articles, commonly referred to as a shot of molded articles, such as a plurality of PET performs.
  • PET Polyethylene Teraphalate
  • the injection molding machine 100 broadly includes an injection unit 104, a clamping unit 106, a retrieval device 108, a treatment unit 112 and a molded article conveyance device 130.
  • the operation of injection molding machine 100 and its components may be controlled by a controller 105 such as, for example, a programmable logic controller (PLC) or industrial computer.
  • PLC programmable logic controller
  • Communication links between various components of the injection molding machine 100 and controller 105 may be provided and such links may be wired and/or wireless.
  • the injection molding machine 100 also includes a mold 116 that is arranged in the clamping unit 106 that comprises a cavity mold half 102 and an opposite core mold half 114.
  • the cavity mold half 102 is shown to be attached to a stationary platen 110 of the clamping unit 106 and the core mold half 114 is attached to a moving platen 115 of the clamping unit 106.
  • the cavity mold half 102 defines or otherwise includes a plurality of cavities 103
  • the core mold half 114 similarly defines or otherwise includes a corresponding plurality of cores 127 that cooperate together, when the mold is closed, to define a plurality of molding cavities (not numbered) within which to mold a plurality (i.e. shot) of molded articles, which in this example are preforms of the type mentioned previously.
  • the construction and operation of the injection molding system 100 is generally consistent with the HyPETTM (trademark of Husky Injection Molding Systems Ltd, of Bolton Ontario Canada) perform molding system from Husky Injection Molding Systems Ltd..
  • HyPETTM trademark of Husky Injection Molding Systems Ltd, of Bolton Ontario Canada
  • a detailed description of the structure and operation of the molding machine 100 is disclosed in commonly assigned US patent number 7,104,780 issued September 12, 2006, the entire contents of which is hereby incorporated herein by reference.
  • a brief overview of the molding machine 100 and its operation follows.
  • a charge of molding material that has been prepared in the injection unit 104 is injected into the mold 116 to define a shot of molded articles therein.
  • the mold 116 is then opened, as shown with reference to FIGS. 1 and 3, thereby providing space therebetween permitting entry of a retrieval tool 122, commonly referred to as an end-of-arm tool (EOAT), that is moveable by a moving apparatus 118 (e.g. robot) of the retrieval device 108, in between the mold halves of the mold 116 to an inbound position, not shown.
  • EOAT end-of-arm tool
  • the shot of molded articles is ejected from the mold 116 and transferred into holders 124 on the retrieval tool 122.
  • the shot of molded articles are transferred to the retrieval tool 122, it is moved again by the moving apparatus 118 to an outbound position to allow the mold 116 to be closed again and then commence molding the next shot of molded articles in the mold.
  • a conditioning tool 126 of the treatment device 112 may subject the molded articles that are being held in the retrieval tool 122 to a treatment (e.g. convective cooling, thermoforming, etc.).
  • a treatment e.g. convective cooling, thermoforming, etc.
  • the conditioning tool 126 may remove the shot of molded articles from the retrieval tool 122 for further processing such as, for example, transfer onto the molded article conveyance device 130 for conveyance away from the molding machine and towards a storage container or a blow molding machine.
  • the retrieval tool 122 may be configured to carry and hold more than one shot of molded articles that were molded at different times (i.e. cycles) by the injection mold machine 100.
  • the retrieval tool 122 can be cycled, by the moving apparatus 118, between incremental inbound and outbound positions and may retrieve and hold more than one shot of molded articles at any one time.
  • the molded article conveyance device for use with the injection molding machine 100 may include a conveyor for receiving shots of molded articles that are molded in the injection molding machine 100, a sample device and a director that is configurable to selectively direct a selected shot of molded articles, at least in part, into the sample device.
  • the director is configurable to selectively direct one of the selected shot of molded articles or a selected portion thereof into the sample device.
  • the selected portion of the shot of molded articles may correspond, for example, to one or more molded articles that were molded in specified cavities in the mold 116 or that were conditioned in one or more specified holders 124 on a retrieval tool 122.
  • the one or more specified cavities in the mold 116 may include, for example, a specified row 107-X (FIG. 12A), column 107-Y (FIG. 12A), or quadrant 107-Q FIG. 12A) of cavities in the mold 116.
  • the one or more specified holders in the retrieval tool 122 may include, for example, a selected cooling stage (124-1, 124-2, 124-3, 124-4) therein.
  • the director may be operated either manually or automatically, to selectively direct one or more selected shots of molded articles into the sample device.
  • the automated sampling may be conducted, for example, upon demand or at a specified frequency or interval (e.g. elapsed time, molding cycle count, etc).
  • the device may also include an inspector that is configured to inspect the molded articles in the sample device.
  • the inspector may be configured to provide an indication of an out-of-boundary dimension to at least one of the controller 105 of the injection molding machine 100 and/or a plant monitoring system 109 (FIG. 11) to prompt remedial action.
  • a non-limiting embodiment of the molded article conveyance device 130 broadly includes a conveyor 131 (e.g. belt conveyor), a director 132 and a sample device 134.
  • An upstream part of the conveyor 131 is positioned beneath the treatment device 112 for receiving, in a typical manner, shots of molded articles being deposited thereon by the treatment device 112.
  • the conveyance of a shot of molded articles 140-1 through the handling device 130 may be appreciated with reference to FIGS.
  • the shot of molded articles 140-1 is conveyed away from the treatment device 112 and eventually through the director 132 that selectively directs the molded articles onto, or into, a downstream structure 136 such as, for example, a storage container or a further conveyor for further conveyance of the molded articles to a further device (e.g. conditioning oven, blow molding machine, etc.).
  • a further device e.g. conditioning oven, blow molding machine, etc.
  • the upstream part of the conveyor 131 may instead be positioned directly beneath the mold 116 for receiving the shot of molded articles being deposited (i.e. free-dropped) therefrom.
  • the director 132 is configurable (e.g. moveable), either manually or automatically, to selectively direct one or more selected shots of molded articles into the sample device 134.
  • the foregoing may be appreciated by contrasting FIGS. 2 and 4, wherein the director 132 is configured, or otherwise positioned, to direct a selected shot of molded articles 140-2, at least in part, into the sample device 134.
  • the sample device 134 may be, for example, a sample container (e.g. tray or box) for sequestering the selected molded articles 140-2 or it may be yet another conveyor. Thereafter, the selected shot of molded articles 140-2 may be conveniently inspected (manually or automatically).
  • the director 132 may be a simple chute that is hinged near to a downstream end of the conveyor 131, and wherein the chute may be selectively inclined, contrasting FIGS. 6 and 7, to selectively direct the selected shot of molded articles towards the sample device 134 that is provided as a sample container that is supported on a gate wall 144 of the molding machine.
  • the director 132 further includes a lever 142 to manually tilt the chute of the conveyor.
  • the lever 142 may be supplemented or substituted by an actuator (e.g. a pneumatic or electro-mechanical actuator - not shown in these views) to provide for semi-autonomous or completely autonomous operation.
  • the flow chart depicts a method of molding 200 using the injection molding machine 100 including the molded article conveyance device 130 and/or the molded article conveyance device 230, 330 that will be described hereafter.
  • the method begins with successively molding, step 210, shots of molded articles 140-1, 140-2, 140-3 in the injection molding machine 100 and depositing them onto a conveyor 131 of the molded article conveyance device 130, 230, 330.
  • the method 200 includes conveying, step 220, the shots of molded articles 140-1, 140-2, 140-3 towards a downstream structure 136.
  • the method includes selectively sampling, step 230, a selected shot of molded articles 140-2 from the conveyor 131 with selective reconfiguring of a director 132, 232, 332 to direct the selected shot of molded articles 140-2 into a sample device 134, 234, 334.
  • the molded article conveyance device 130 may further include an actuator 138 for automated configuring or movement of the director 132 under the control of the controller 105.
  • the molded article conveyance device 130 may include a detector 141 such as, for example, a photo-eye, vision system or other such device that is configured to detect or otherwise delineate separation between adjacent shots of molded articles on the conveyor 131.
  • the method 200 further include using the information from the detector 141 in the controller 105 to assist with automatic sampling of the selected shot of molded articles. More specifically, the controller 105 will use the information to time the reconfiguration of the director 132 to direct the selected shot of molded articles 140-2 into the sample device 134 and thereafter once again reconfigure the director 132 to direct the following shots of molded articles along the normal production path towards the downstream structure 136.
  • the method 200 may further include temporarily changing a speed profile of the conveyor 131 , under control of the controller 105, during sampling to increase a gap between adjacent shots of molded articles thereon.
  • the speed of the conveyor 131 may be momentarily increased before and after deposit thereof thereon to provide for a larger gap between the selected shot of molded articles for sampling and those shots of molded articles from a preceding and following molding cycle.
  • the molded article conveyance device 130 may also include a barrier 146 that is selectively positionable to block conveyance of a following shot molded articles 140-3 on the conveyor 131 that follows the selected shot of molded articles 140-2 being sampled.
  • the method 200 may further include controlling the barrier 146, with the controller 105, to selectively position the barrier 146 into the detected gap between the selected shot of molded articles 140-2 and the following shot of molded articles 140-3.
  • the barrier 146 may be configured to include an air blowing device 148 to slow or stop the following shot of molded articles 140-3 from moving down the conveyor 131.
  • the method may further include controlling the air blowing device 148 with the controller 105 to selectively blow air upstream on the face of the conveyor 131 to slow or stop the following shot of molded articles 140-3 from moving down the conveyor 131.
  • the molded article conveyance device 230 includes a director 232 that is an actuator for selectively positioning the sample device 334.
  • the method 200 may thus further include positioning the sample device 334, with the director 232, which in this example is a container with an open top, between the conveyor 131 and a treatment device 112 of the injection molding machine 100 for receiving the selected shot of molded articles 140-2 directly therefrom prior to the deposition thereof onto the conveyor 131.
  • the director 232 rotates the sample device 334, in the direction indicated, between a position beside the conveyor 131, not shown, and a position beneath the treatment device 112.
  • the molded article conveyance device 330 includes a director 332 that is a reverser that is associated with the conveyor 131.
  • the method 200 may thus further include controlling operation of the reverser to temporarily reverse a direction of conveyance of the conveyor 131 to direct the selected shot of molded articles towards the sample device 334 that is positioned at an upstream end thereof.
  • the molded article conveyance device may also include or may otherwise cooperate with an inspector with which to inspect the molded articles in the sample device.
  • An inspector 400 is shown with reference to FIG. 11.
  • the inspector 400 may be any variety of known inspection apparatus that is suitable for inspecting a molded article.
  • the inspector may be configured, for example, to conduct an optical inspection of the molded articles.
  • the foregoing species of inspector may include known vision systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention porte, entre autres, sur un dispositif de transport d'articles moulés destiné à être utilisé avec une machine de moulage par injection, qui comprend un transporteur destiné à recevoir des moulées d'articles moulés qui sont moulés dans la machine de moulage par injection, un dispositif d'échantillonnage et un dispositif directeur qui peut être conçu pour diriger sélectivement une moulée choisie d'articles moulés, au moins en partie, dans le dispositif d'échantillonnage.
PCT/CA2014/050816 2013-09-06 2014-08-26 Dispositif de transport d'articles moulés Ceased WO2015031990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361874423P 2013-09-06 2013-09-06
US61/874,423 2013-09-06

Publications (1)

Publication Number Publication Date
WO2015031990A1 true WO2015031990A1 (fr) 2015-03-12

Family

ID=52627647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2014/050816 Ceased WO2015031990A1 (fr) 2013-09-06 2014-08-26 Dispositif de transport d'articles moulés

Country Status (1)

Country Link
WO (1) WO2015031990A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171541B1 (en) * 1998-03-31 2001-01-09 Husky Injection Molding Systems Ltd. Preform post-mold cooling method and apparatus
US20050093207A1 (en) * 2003-10-30 2005-05-05 Simone John D. Injection molding lid transfer apparatus and method
US7250130B2 (en) * 2002-02-20 2007-07-31 Netstal-Maschinen Ag Method and inspection device used for the cyclic production of injection molded parts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171541B1 (en) * 1998-03-31 2001-01-09 Husky Injection Molding Systems Ltd. Preform post-mold cooling method and apparatus
US7250130B2 (en) * 2002-02-20 2007-07-31 Netstal-Maschinen Ag Method and inspection device used for the cyclic production of injection molded parts
US20050093207A1 (en) * 2003-10-30 2005-05-05 Simone John D. Injection molding lid transfer apparatus and method

Similar Documents

Publication Publication Date Title
US20080166442A1 (en) Apparatuses For Compression Moulding, Thermal Conditioning, Transporting And Inspecting Objects
EP2950998B1 (fr) Système de moulage
EP2886297B1 (fr) Machine de moulage par soufflage
US20170227472A1 (en) An optical inspection system
US11147894B2 (en) Device for transporting a hollow body, installation provided with such devices, and method for conveying a hollow body attached to such a device
CN107530945A (zh) 控制空心体的传送装置穿过加热站的控制方法和相关的传送装置
CN100475483C (zh) 塑料物品的注射装置和方法
AU2018204788B2 (en) Blow moulding machine, preforms, system and process
CN115990975A (zh) 用于制造和卸载用于制造塑料容器的预制件的设备
KR20110033856A (ko) 플라스틱 용기, 특히 병을 중공 성형하기 위한 설비를 위한 성형 유닛
JP4754625B2 (ja) 所定量を移送する装置
US9962879B2 (en) Machine for forming containers made of thermoplastic material
EP2692499B1 (fr) Système de moulage par compression
EP2470347B1 (fr) Système de démoulage à vitesse élevée
WO2001066328A1 (fr) Systeme d'alimentation asservi pour le transfert de preformes dans une installation de fabrication de recipients
WO2015031990A1 (fr) Dispositif de transport d'articles moulés
JP4435784B2 (ja) プラスチック部材の調整装置及びプロセス
CN111936294B (zh) 旋转处理单元的管控方法和管控设备
JP4148577B2 (ja) 射出ブロー成形装置
US9073254B2 (en) Conveying and cooling apparatus for preforms
JP2016529143A (ja) 熱可塑性プラスチック材料製予備成形物のための成形後冷却装置
US20200207003A1 (en) Apparatus for blow molding plastic containers, particularly bottles
WO2023180312A1 (fr) Dispositif de refroidissement et d'extraction de préformes pour la production de récipients en plastique
RU85855U1 (ru) Установка для изготовления раздувом полых изделий из полимерных материалов
US20100072681A1 (en) Method and device for the industrial thermal treatment of elongated mechanical parts

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14841834

Country of ref document: EP

Kind code of ref document: A1

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14841834

Country of ref document: EP

Kind code of ref document: A1