WO2020166642A1 - Dispositif de moulage par injection-soufflage - Google Patents

Dispositif de moulage par injection-soufflage Download PDF

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Publication number
WO2020166642A1
WO2020166642A1 PCT/JP2020/005447 JP2020005447W WO2020166642A1 WO 2020166642 A1 WO2020166642 A1 WO 2020166642A1 JP 2020005447 W JP2020005447 W JP 2020005447W WO 2020166642 A1 WO2020166642 A1 WO 2020166642A1
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WO
WIPO (PCT)
Prior art keywords
blow molding
station
lip
injection
injection blow
Prior art date
Application number
PCT/JP2020/005447
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English (en)
Japanese (ja)
Inventor
晋二 角陸
Original Assignee
日精エー・エス・ビー機械株式会社
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 日精エー・エス・ビー機械株式会社 filed Critical 日精エー・エス・ビー機械株式会社
Priority to JP2020544060A priority Critical patent/JP6799725B1/ja
Publication of WO2020166642A1 publication Critical patent/WO2020166642A1/fr

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    • 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
    • B29C49/06—Injection 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
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • 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
    • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding

Definitions

  • the present invention relates to an injection blow molding device that forms a resin hollow container by blow molding an injection molded preform.
  • the injection blow molding device that employs this injection blow molding method includes an injection molding station and a blow molding station. At the injection molding station, a resin preform is injection molded. The preform is transferred from the injection molding station to the blow molding station with its lip (neck) held. A hollow container is formed by blow molding this preform at a blow molding station.
  • injection blow molding device is also called, for example, a one-step type or hot parison type blow molding device.
  • Such an injection blow molding device is equipped with a transfer section for transferring a resin molded product (eg, preform, hollow container).
  • a rotary transport system is often used as the transport section of the injection blow molding apparatus.
  • the rotary transfer method is a method in which the lip mold that holds the lip mold (neck mold) of the resin molded product is fixed to the rotating disc, and this rotating disc is rotated to move the resin molded product held by the lip mold to each It is to be transported to the station.
  • the size of the injection blow molding machine is limited to a size that can be mounted on a truck or carried into a shipping container, so the size of the rotating disk is also made too large. It is not possible.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide an injection blow molding apparatus having improved productivity and versatility while suppressing an increase in size.
  • An injection blow molding apparatus comprising: a plurality of lip mold fixing plates in which a plurality of lip molds are fixed in a row; and a direction in which the plurality of lip mold fixing plates are arranged is a column direction.
  • a lip type unit having a plate holding member that holds the lip type fixing plates arranged in parallel in the row direction so that the distance between the lip type fixing plates can be adjusted, and an edge portion of the lip type unit is slidably supported to support the lip type unit.
  • An upper base provided with a transport path on the lower surface for circulating and transporting the mold unit to each station, and slide moving means for linearly sliding the lip mold unit along the transport path.
  • the injection blow molding device is characterized by
  • a resin molded product for example, a preform
  • a resin molded product for example, a preform
  • the number of rows of neck molds can be increased relatively easily, and an injection blow molding apparatus with improved productivity and versatility can be realized.
  • the transport device is provided corresponding to each station, and a guide member that supports an edge portion of each side of the lip type unit that crosses the transport path, and a first position that supports the lip type unit. And a moving unit that moves the guide member between a second position that does not interfere with the lip type unit.
  • the carrying device is provided with a movable plate that is provided corresponding to the injection molding station and the blow molding station, and that can move up and down while holding the lip type unit. Thereby, the resin molded product can be more appropriately conveyed.
  • the transfer device is provided corresponding to the injection molding station and the blow molding station, includes a movable plate that can be raised and lowered while holding the lip type unit, and is provided corresponding to each station. Between a guide member that supports an edge portion of each side of the lip type unit that crosses the transport path, and a first position that supports the lip type unit and a second position that does not interfere with the lip type unit. And moving means for moving the guide member, and the guide member and the moving means are preferably provided on the movable plate. Accordingly, the resin molded product can be appropriately held on the movable plate in the injection molding station, the blow molding station, or the like, and the resin molded product can be properly moved up and down together with the movable plate.
  • the guide member provided on the movable plate corresponding to the blow molding station is configured to be movable together with the lip type fixing plate as the gap between the lip type fixing plates is expanded. Further, it is preferable that the movable plate corresponding to the blow molding station is configured to be able to move up and down even when the gap between the lip type fixed plates is expanded. As a result, the resin molded product can be appropriately conveyed to each station by the lip type unit.
  • the plate holding member includes a plurality of dividing members to which the lip-type fixing plates are fixed, and a connecting member that connects the plurality of dividing members to each other so as to be contactable and separable. ..
  • the pitch between the columns of the neck type can be easily changed, so that the number of columns of the neck type can be more easily increased.
  • the blow molding station is provided with a plurality of sets of blow molds, and the dividing members are respectively connected to bottom molds that constitute the blow molds. As a result, the pitch between the neck mold rows can be appropriately changed at the blow molding station.
  • the slide moving means includes a rail member linearly provided between the stations, a chuck member slidably mounted on the rail member and engaging with the plate holding member, and the chuck member being the rail member. And a power source that slides along the member.
  • the injection blow molding apparatus of the present invention it is possible to appropriately convey the resin molded product to each station and prevent the apparatus from increasing in size. That is, it is possible to realize an injection blow molding apparatus with improved productivity and versatility while suppressing the increase in size of the apparatus.
  • FIG. 3 is a front view of the injection blow molding apparatus according to the first embodiment.
  • FIG. 1 is a perspective view showing a schematic configuration of a carrying device according to a first embodiment.
  • FIG. 1 is a diagram showing a schematic configuration of a carrying device according to a first embodiment.
  • FIG. 3 is a diagram showing a schematic configuration of a lip type unit according to the first embodiment.
  • FIG. 3 is a cross-sectional view illustrating a slide support member according to the first embodiment.
  • FIG. 3 is a cross-sectional view illustrating a guide member according to the first embodiment.
  • FIG. 3 is a diagram illustrating a moving device according to the first embodiment.
  • FIG. 3 is a side view showing a schematic configuration of the blow molding die according to the first embodiment.
  • FIG. 6 is a diagram for explaining the operation of the lip type unit according to the first embodiment.
  • It is a block diagram which shows schematic structure of the injection blow molding apparatus which concerns on 2nd Embodiment.
  • It is a block diagram which shows schematic structure of the injection blow molding apparatus which concerns on 4th Embodiment.
  • FIG. 1 is a block diagram showing a schematic configuration of an injection blow molding apparatus according to one embodiment (first embodiment) of the present invention.
  • FIG. 2 is a diagram showing a front side of the injection blow molding apparatus, and is a diagram showing a schematic configuration of an injection molding station, an inspection station, and a take-out station.
  • FIG. 3 is a perspective view showing an example of a transfer device included in the injection blow molding apparatus, and
  • FIG. 4 is a view showing a lower surface (bottom surface) side of an upper base included in the transfer device.
  • the injection blow molding apparatus is, for example, a one-step (hot parison type) blow molding apparatus for manufacturing a hollow container (resin molded product) such as a PET bottle, and performs different manufacturing steps. It is equipped with multiple stations.
  • the injection blow molding apparatus 10 includes at least an injection molding station 20, blow molding stations 40 and 50, and an ejection station 70.
  • the injection blow molding apparatus 10 according to the present embodiment includes an injection molding station 20, a temperature control station 30, a first blow molding station 40, a second blow molding station 50, and an inspection station 60. And a take-out station 70.
  • These six stations 20 to 70 are provided on a machine base 11 that constitutes the injection blow molding apparatus 10.
  • the transport device according to the present disclosure is not applied only to the injection blow molding device having 6 stations.
  • the invention can be applied to an injection blow molding device having four stations shown in FIG. 11 described later and an injection blow molding device having five stations shown in FIG. 15 described later.
  • the injection molding station (injection molding device) 20 includes an injection mold 22 to which an injection device 21 is connected via a hot runner mold, and the injection device 21 supplies the injection mold 22 with a resin material (for example, a raw material).
  • a resin material for example, a raw material.
  • a preform is molded by injecting PET resin).
  • the temperature control station (temperature control device) 30 is a temperature control mold (temperature control pot and temperature control rod (temperature control core, air cooling rod, heating core)) 31 for controlling (heating or cooling) the temperature of the preform.
  • the temperature of the preform conveyed from the injection molding station 20 to the temperature control station 30 is adjusted in the temperature control mold 31 to a predetermined temperature.
  • the first blow molding station (first blow molding device) 40 includes a blow molding die (first blow molding die and first blow core die and stretch rod) 41, and an intermediate molded product from a preform.
  • a blow molding die first blow molding die and first blow core die and stretch rod
  • an intermediate molded product from a preform Form. That is, in the temperature control station 30, the preform conveyed to the first blow molding station 40 is placed in the blow molding die 41, and the preform is blow-molded with a pressurized gas (high pressure air) to obtain a predetermined shape.
  • a pressurized gas high pressure air
  • the second blow molding station (second blow molding device) 50 includes blow molding dies (second blow molding die and first blow core die and stretch rod) 51, and includes intermediate molded products to final molded products. To form a hollow container. That is, in the first blow molding station 40, the intermediate molded product conveyed to the second blow molding station 50 is placed in the blow molding die 51, and the intermediate molded product is blown by pressurized gas (high pressure air). By molding, a hollow container which is the final molded product is formed.
  • the inspection station (inspection device) 60 is a station for inspecting the hollow container conveyed from the second blow molding station 50 (leak inspection, etc.).
  • the inspection method at the inspection station 60 is not particularly limited, and an existing inspection method may be adopted.
  • the hollow container determined to be non-defective by the inspection station 60 is transported to the take-out station 70 and taken out of the apparatus from the take-out station 70.
  • the injection molding station 20, the temperature control station 30, the first blow molding station 40, the second blow molding station 50, the inspection station 60, and the take-out station 70 are arranged in two rows of three stations on the machine base 11. As a whole, the injection blow molding apparatus 10 has a substantially rectangular shape in a top view.
  • the injection blow molding apparatus 10 passes from the injection molding station 20 through the temperature control station 30, the first blow molding station 40, the second blow molding station 50, and the inspection station 60 to the take-out station 70 to form a resin molded product (
  • a transport device 100 for sequentially transporting a preform, an intermediate molded product or a hollow container is provided.
  • the transport device 100 circulates and transports the lip type unit 110 to each station as indicated by an arrow in FIG.
  • the injection blow molding device 10 is characterized by the configuration of the transfer device 100. Below, the structure of the conveyance apparatus 100 is mainly demonstrated in detail.
  • the transport device 100 includes a plurality of lip dies 23 (see FIG. 5) that form a lip portion (neck portion) of a resin molded product (preform, intermediate molded product or hollow container). It includes a lip type unit 110 including the lip type unit 110, and sequentially conveys the lip type unit 110 to each station along the surface (lower surface) of the upper substrate 120.
  • the transfer device 100 includes six lip-type units 110 for six stations, and the plurality of lip-type units 110 are circulated and transferred to each station.
  • FIG. 5 is a diagram showing a schematic configuration of the lip type unit
  • FIG. 5(a) is a diagram showing a state where the pitch between the rows of the lip type is minimum
  • FIG. It is a figure which shows the state where a pitch is the maximum.
  • the lip type unit 110 includes a plurality of (four in this embodiment) lip type fixing plates 111 (111a to 111d) and a plurality of these lip types. And a frame-shaped plate holding member 112 that holds the mold fixing plate 111 at predetermined intervals.
  • the number of lip type fixing plates is not limited to four (four rows), and may be two (two rows), three (three rows) and the like.
  • the direction in which the plurality of lip-type fixing plates 111 are arranged is referred to as the column direction.
  • a plurality of (6 in the present embodiment) fixing holes 113 are formed in a line in each lip-type fixing plate 111.
  • a lip die 23 composed of a pair of split dies is fixed in each of the fixing holes 113.
  • Each lip type fixed plate 111 (111a to 111d) is composed of a pair of divided plates 114a and 114b.
  • the split molds that form the lip mold 23 are fixed to the pair of split plates 114a and 114b, respectively.
  • the pair of split plates 114a and 114b forming the lip type fixed plate 111 are normally biased by a spring or the like and are held in a state in which they are in close contact (the state where the lip type 23 is closed). Further, wedge-shaped holes 115 are formed at both ends in the longitudinal direction of the mating surfaces of the division plates 114a and 114b.
  • the plate holding member 112 holds a plurality of lip die fixing plates 111 arranged in parallel in a direction (row direction) orthogonal to a direction in which the plurality of lip dies 23 formed in one row are arranged,
  • the distance between the lip-type fixed plates 111 is adjustable. That is, the plate holding member 112 can change the interval (the pitch between the rows of the lip dies 23) between the lip die fixing plates 111 when the pair of split plates 114a and 114b are in close contact (the lip die 23 is closed). It is configured.
  • the plate holding member 112 is divided between the lip type fixed plates 111, and is composed of a plurality of (for example, six) dividing members 116a to 116f (see FIG. 5B). ). Of the six dividing members 116a to 116f, the dividing members 116a and 116f located on both outer sides in the arrangement direction are formed in a substantially U shape and support both end portions of the lip type fixing plates 111a and 111d. There is.
  • the dividing members 116b to 116e provided in the central portion in the arrangement direction slidably support one end sides of the lip type fixing plates 111b and 111c.
  • the dividing members 116b and 116c slidably support both ends of the lip type fixing plate 111b, and the dividing members 116d and 116e slidably support both ends of the lip type fixing plate 111c.
  • the adjacent dividing members 116 are connected by a connecting member 119 having a connecting pin 117 and a long hole 118 into which the connecting pin 117 is inserted.
  • the connecting pin 117 is provided on one of the adjacent dividing members 116, and the connecting member 119 is fixed to the other dividing member 116 with the connecting pin 117 inserted into the elongated hole 118.
  • the distance between the adjacent division members 116 can be adjusted within the range of the length of the long holes 118. That is, in a state where the pair of split plates 114 constituting the lip type fixing plate 111 are in close contact (the state where the lip type 23 is closed), the interval between the lip type fixing plates 111 (the pitch between the rows of the lip type 23) is appropriately set. Can be adjusted.
  • the dividing members 116 are connected by the connecting pin 117 and the connecting member 119 as described above, but the connecting structure of the dividing members 116 is not particularly limited, and between the rows of the lip type 23. Any structure that can adjust the pitch may be used.
  • the transfer device 100 sequentially transfers the plurality of lip type units 110 having such a configuration to each station along the surface (lower surface) of the upper substrate 120.
  • the upper substrate 120 corresponds to the injection molding station 20, the temperature control station 30, the first blow molding station 40, the second blow molding station 50, the inspection station 60, and the ejection station 70. It is provided and fixed on the machine base 11 by a plurality of legs 121.
  • a substantially rectangular transport path 122 for transporting the lip type unit 110 is provided on the lower surface side of the upper substrate 120. That is, on the lower surface of the upper base 120, a plurality of slide support members 123 that slidably support the edge of the lip type unit 110 are arranged in an inner and outer double ring, and the inner slide support member 123a and the outer slide member 123a. The area between the support member 123b and the support member 123b is the transport path 122 (see FIG. 4).
  • each slide support member 123 has a lower end of the upper base 120, for example, a tip end that is bent and protrudes so as to have an L-shaped cross section and faces the inside of the transport path 122. It is provided in.
  • the lip type unit 110 is slidable along the transport path 122 with the edge portion 110 a supported by the slide support member 123.
  • the slide support member 123 is not particularly limited as long as it can slidably support the lip type unit 110, and the shape thereof is not particularly limited.
  • the upper base 120 corresponding to each station is provided with substantially rectangular through holes 124 (124a to 124f) for exposing each lip die of the lip die unit 110.
  • the above-mentioned slide support member 123 is provided outside the through holes 124 at each station (see FIG. 4), and the lip type unit 110 that has slid along the transport path 122 is located at a position facing each through hole 124. It is supposed to be retained.
  • molding processing members injection core type, temperature control rod type, blow core type, stretch rod, eject cam
  • the lip type unit 110 is configured so that the pitch between the rows of the lip type 23 can be changed as described above.
  • the through holes 124b, 124e, and 124f provided in the temperature control station 30, the inspection station 60, and the take-out station 70 are provided in the lip mold units 110 in a state where the pitch between rows of the lip molds 23 is minimized. It is large enough to expose.
  • the slide support member 123 is attached to the upper base 120 in the temperature control station 30, the inspection station 60, and the take-out station 70.
  • the transfer device 100 is provided with a movable plate 130 that can be lifted and lowered while holding the lip mold unit 110 at a station where the lip mold 23 needs to be lifted and lowered.
  • the movable plate 130 (130A, 130B, 130C) is provided in each of the injection molding station 20, the first blow molding station 40, and the second blow molding station 50.
  • Each movable plate 130 is provided with an exposure opening 131 of a size that exposes each lip die of the lip die unit 110 in a state where the pitch between rows of the lip die is minimized.
  • the through holes 124a, 124c, 124d provided in the injection molding station 20, the first blow molding station 40, and the second blow molding station 50 have a size capable of accommodating the movable plate 130 (130A, 130B, 130C). doing.
  • the movable plate 130 is provided so as to be accommodated in the through holes 124a, 124c, 124d of the upper base 120.
  • the movable plate 130A corresponding to the injection molding station 20 is formed in a size capable of holding the lip type unit in which the inter-row pitch of the lip types 23 is minimized. Therefore, the through holes 124a corresponding to the movable plate 130A are also formed in such a size that the lip die unit 110 in a state where the pitch between rows of the lip die 23 is minimized is exposed.
  • the slide support member 123 is attached to the movable plate 130 in which the exposure opening 131 is formed. That is, the movable plate 130 holds the lip mold unit 110 by a member including the slide support member 123, and is configured to be movable up and down between the upper base 120 and the injection molding mold (injection cavity mold) 22.
  • the injection molding station 20 is provided with a so-called vertical tightening type injection molding device as shown in FIG. 2, and an injection core mold (not shown) is moved forward and backward (elevated) above the upper base 120.
  • a drive mechanism section 200 is provided above the upper base 120.
  • a plurality of (for example, four) air cylinders are further provided, and an elevating device (elevating means) 140 for elevating the movable plate 130 is provided.
  • the elevating device 140 and the movable plate 130 are connected via a rod member 145.
  • the movable plate 130 can be moved up and down between the upper base 120 and the injection molding die (injection cavity die) 22 by the elevating device 140 while holding the lip die unit 110.
  • the movable plate 130B corresponding to the first blow molding station 40 and the movable plate 130C corresponding to the second blow molding station 50 are large enough to hold the lip mold unit 110 in which the row pitch of the lip molds 23 is maximized. It has a shape and a shape. Therefore, the through holes 124c and 124d corresponding to the movable plates 130B and 130C are also formed in such a size that the lip type unit 110 in which the pitch between the rows of the lip types 23 is maximized is exposed.
  • the movable plates 130 ⁇ /b>B and 130 ⁇ /b>C include a frame-shaped main body portion 132 in which the exposure opening 131 is formed, and a pair of extension portions that extend from the main body portion 132 to the outer side in the row-to-row direction of the lip mold 23. And 133.
  • a slide support member 123 is provided from the main body portion 132 of the movable plate 130 to the extension portion 133 (see FIG. 3 and the like).
  • the movable plate 130 can hold the lip type unit 110 not only when the row pitch of the lip dies 23 is minimized but also when the row pitch is maximized. That is, the lip-type unit 110 can change the pitch between rows while being held by the movable plate 130.
  • the movable plates 130C and 130D hold the lip type unit 110 by a member including the slide support member 123, and the upper base 120 and the blow molding unit. It is configured to be able to move up and down between the metal molds (blow cavity molds) 41 and 51.
  • the movable plates 130B and 130C can be moved up and down by an elevating device provided above the upper base 120.
  • the transfer device 100 further includes a guide member (holding member) 125 for holding the lip type unit 110 at each station, separately from the slide support member 123 forming the transfer path 122.
  • the guide member 125 is provided at each station so as to correspond to two sides of the lip type unit 110 that crosses the transport path 122.
  • These guide members 125 are movably provided by a moving device (moving means) 126 so as not to hinder the conveyance of the lip type unit 110.
  • the moving device 126 includes, for example, two actuators (power sources) 127 configured by air cylinders or the like, and has a first position (FIG. 7) that holds the edge portion 110a of the lip type unit 110.
  • the guide member 125 is appropriately moved to a second position (see FIG. 2B) that does not interfere with the movement of the lip type unit 110 (see (a)).
  • the guide member 125 and the moving device 126 are attached to the upper base 120 in the temperature control station 30, the inspection station 60, and the take-out station 70, and the injection molding station 20 and the first base 120 are attached.
  • the movable plate 130 is attached in the blow molding station 40 and the second blow molding station 50. That is, in this embodiment, the movable plate 130 is configured to be movable up and down while the lip type unit 110 is held by the slide support member 123 and the guide member 125. Note that the upper substrate 120 and the movable plate 130 are not shown in FIG. 7.
  • the guide member 125 and the moving device 126 may be provided as needed.
  • the guide member 125 and the moving device 126 may not be provided as long as the slide support member 123 can appropriately hold the lip type unit 110.
  • the movable plates 130B and 130C corresponding to the first blow molding station 40 and the second blow molding station 50 are provided with the main body portion 132 and the extending portion 133, and the row of the lip mold 23 is provided.
  • the lip type unit 110 can be held not only in the state in which the inter-row pitch is minimized but also in the state in which the inter-row pitch is maximized.
  • the guide member 125 (125 a) provided between the pair of extending portions 133 is moved to the second position by the moving device 126.
  • the inter-row pitch of the lip dies 23 can be appropriately expanded without the lip die unit 110 interfering with the guide member 125.
  • the first pitch converting mechanism 160 (pitch) that presses the lip type unit 110 that includes an air cylinder etc.
  • a reduction mechanism is provided (see FIG. 3, etc.).
  • the transfer device 100 further includes a slide transfer device (slide transfer means) 170 that moves the lip type unit 110 to each station along a transfer path 122 provided on the upper base 120. That is, the slide moving device 170 is provided on the lower surface (bottom surface) side of the upper substrate 120 and linearly slides the lip type unit 110 supported by the slide supporting member 123.
  • a slide transfer device silica transfer means 170 that moves the lip type unit 110 to each station along a transfer path 122 provided on the upper base 120. That is, the slide moving device 170 is provided on the lower surface (bottom surface) side of the upper substrate 120 and linearly slides the lip type unit 110 supported by the slide supporting member 123.
  • the slide movement device 170 is a so-called servo slider, and as shown in FIGS. 4 and 8, a rail member 171 linearly provided between adjacent stations and a slide on the rail member 171.
  • a slide member 172 that is movably provided and a power source 173 that has a motor or the like and moves the slide member 172 along the rail member 171 are provided.
  • Each rail member 171 that constitutes the slide moving device 170 is arranged on the outer peripheral portion of the rectangular upper base 120 along each side of the upper base 120. That is, each rail member 171 is arranged along the outer peripheral portion of each station arranged in a rectangular shape.
  • each rail member 171 and slide member 172 configuring the slide movement device 170 are individually provided between adjacent stations.
  • each slide member 172 provided on the plurality of rail members 171 arranged in a line is moved by one power source 173.
  • the slide member 172 is provided with a chuck member 174 that can move forward and backward from the rail member 171 toward the lip type unit 110.
  • the chuck member 174 includes an engagement protrusion 175 that protrudes toward the lip type unit 110 side.
  • an engagement concave portion 180 with which the engagement protrusion 175 is engaged is formed on the side surface of the lip type unit 110 (the side surface of a plate holding member described later).
  • FIG. 8A shows a state in which the chuck member 174 is not engaged with the engaging recess 180 in the one slide moving device 170 shown
  • FIG. 8B shows that the chuck member 174 has the engaging recess 180. Shows the state of being engaged with.
  • the upper substrate 120 and the movable plate 130 are not shown. With this configuration, the lip type unit 110 can be attached to and detached from the transfer device 100 (the injection blow molding device 10) via the chuck member 174.
  • the slide moving device 170 is provided with the same number of chuck members 174 as the number of stations. Further, when it is necessary to change the interval (pitch) of each lip type fixing plate 111 during molding, it is necessary to convey the lip type unit 110 between stations while maintaining this interval. Therefore, the chuck member 174 includes a first chuck member for a narrow pitch used for transportation from the injection molding station 20 to the temperature control station 30, and the like, and the first blow molding station 40 to the second blow molding station 50. It is desirable to be configured so as to be able to correspond to at least two kinds of pitch patterns, such as being composed of a second chuck member for wide pitch which is used in the conveyance of the above.
  • the gap between the lip mold fixing plates 111 (lip mold It is necessary to change the pitch 23 between columns).
  • the lip mold is fixed according to the mold opening of the blow molding mold 51 (the mold opening of the blow cavity mold). It is necessary to increase the distance between the plates 111.
  • the interval between the lip type fixing plates 111 (the pitch between the rows of the lip types 23) can be appropriately adjusted. Therefore, when the intermediate molded product is formed in the first blow molding station 40, the intermediate molded product can be satisfactorily taken out from the blow molding die 41. Further, when the hollow container is formed in the second blow molding station 50, the hollow container can be satisfactorily taken out from the blow molding die 51.
  • the interval between the lip mold fixing plates 111 is adjusted in synchronization with the opening of the blow molding die 41.
  • the interval between the lip mold fixing plates 111 is adjusted in synchronization with the opening of the blow molding die 51. Since the blow molding dies 41 and 51 have the same configuration except that the shape of the blow cavity is slightly different, the blow molding dies 51 included in the second blow molding station 50 will be described here.
  • the blow molding die 51 provided in the second blow molding station 50 includes a plurality of sets (four sets in this embodiment) of blow molds 52.
  • Each blow mold 52 includes a blow cavity mold 54 having a plurality of cavities in a row, and a bottom mold 55 that closes the bottom of each cavity to form the bottom surface of the hollow container.
  • the blow cavity mold 54 is specifically composed of a pair of split molds which are clamped by bringing the parting surfaces into contact with each other. The split molds of the blow molds 52 adjacent to each other are fixed in a state of being back-to-back.
  • the blow molding die 51 is provided with a blow core die above the blow die 52, which is inserted into an intermediate molded product arranged in the cavity and introduces air into the inside.
  • the blow cavity mold 54 that constitutes the plurality of blow molds 52 and the bottom mold 55 are connected by a connecting member 58 having a connecting pin 56 and an elongated hole 57.
  • the connecting pin 56 and the connecting member 58 are provided near the upper end and the lower end of the blow mold 52, respectively.
  • the lip mold unit 110 is connected to the blow molding mold 51 having such a configuration, and the interval between the lip mold fixing plates 111 is adjusted according to the mold opening of the blow molding mold 51. It is supposed to be done.
  • the bottom die 55 that constitutes each blow die 52 is provided with the connection pins 59, while the split members 116 (116a to 116f) that constitute the plate holding member 112 are provided with these pins.
  • An insertion hole 185 into which each connection pin 59 is inserted is formed (see FIG. 10B and FIG. 3 ).
  • a second pitch conversion mechanism (pitch expansion mechanism) is configured by the connection pin 59, the insertion hole 185, and the like.
  • each connection pin 59 is inserted into each insertion hole of each split member 116. It is inserted in 185, and each dividing member 116 is integrated with each bottom die 55 (see FIG. 10A).
  • the blow molding die 51 is opened, and then the lip mold unit 110 is lifted and separated from the blow molding die 51. As a result, the hollow container is taken out of the blow molding die 51.
  • the first pitch converting mechanism 160 described above presses the lip type unit 110 (plate holding member 112) to return the gap between the lip type fixing plates 111 to the original state (narrow state), and then to the inspection station 60. Transport.
  • the lip mold unit 110 that holds the plurality of lip molds 23 is provided in the injection molding station 20, the temperature control station 30, and the first blow molding station. 40, the second blow molding station 50, the inspection station 60 and the unloading station 70, respectively. Therefore, it is possible to realize an injection blow molding apparatus with improved productivity and versatility.
  • the injection blow molding apparatus 10 has a substantially rectangular shape provided on the lower surface of the upper base 120 between a plurality of stations including at least the injection molding station 20, the blow molding station 40, and the take-out station 70.
  • a conveyance device 100 is provided that allows a lip type unit 110 having a plurality of rows of lip type fixing plates 111 holding a plurality of lip types 23 to be slidably movable and detachable with respect to a shaped conveyance path 122. With this configuration, the size of the lip mold unit 110 and the number of lip molds 23 can be increased, and the productivity can be improved, as compared with a rotary disk having the same area of the upper base 120.
  • the upper base 120 may be a combination of bases individually provided for each station, or may be a base integrally provided for a plurality of stations. However, it is preferable that at least the portion corresponding to the injection molding station 20 of the upper substrate 120 is separable from the portions corresponding to the other stations 30 to 70.
  • the upper base 120 is such that the portion corresponding to the injection molding station 20 can be separated from the portions corresponding to the other stations 30 to 70, and the temperature control station 30 and the first blow molding station are further provided. 40 and the portion facing the second blow molding station 50 and the portion facing the inspection station 60 and the take-out station 70 are separable.
  • the injection molding station 20 is equipped with a so-called vertical tightening type injection molding device, and its height is relatively high. Therefore, it is preferable that the portion of the upper base 120 corresponding to the injection molding station 20 be separable from the portions corresponding to the other stations 30 to 70. As a result, the injection molding station (injection molding apparatus) 20 can be transported separately from other stations. Therefore, the ease of carrying the injection blow molding apparatus 10 is improved.
  • the lip mold unit is fixed to four (four rows) lip molds.
  • the plates are provided, the number of the lip type fixing plates provided in the lip type unit is not particularly limited, and may be two (two rows), three (three rows), or the like.
  • the transport device is illustrated as having six lip-type units for six stations, but the number of lip-type units included in the transport device is not particularly limited. ..
  • the carrier may, for example, be equipped with four lip-type units for six stations.
  • the injection blow molding apparatus is illustrated as having a configuration including six stations for performing the steps of injection molding, temperature control, two-time blow molding, inspection, and take-out.
  • the process content is not particularly limited.
  • the blow molding process may be performed once.
  • the configuration of the blow molding station may be the same as that of the second blow molding station 50 including the second pitch conversion mechanism.
  • the first pitch conversion mechanism may be arranged in the take-out station instead of the blow molding station.
  • the injection blow molding apparatus including six stations has been described, but the number of stations is not particularly limited, and, for example, an injection blow molding apparatus including four stations or five stations can also be used.
  • the invention can be applied.
  • each station is arranged in 2 rows of 3 stations on the machine base.
  • 2 stations are arranged on each machine base.
  • the stations may be arranged in rows.
  • each station is arranged in two rows of three stations on the machine base, while a lip type unit that does not hold any one extra station (space). May be a place to wait (see FIG. 15 described later).
  • FIG. 11 is a block diagram showing an injection blow molding apparatus 1010 according to another embodiment (second embodiment) different from the above embodiment.
  • FIG. 12 is a perspective view showing a schematic configuration of a carrying device 1100 in the injection blow molding device 1010.
  • FIG. 13 is a plan view showing a schematic configuration of the transfer device 1100.
  • the injection blow molding apparatus 1010 includes four stations: an injection molding station 20, a temperature control station 30, a blow molding station 1040, and a take-out station 70.
  • the blow molding station 1040 differs from the first blow molding station 40 and the second blow molding station 50 in the first embodiment in that a hollow container is formed from a preform, but the blow molding die 1041 is
  • the second blow molding station 50 has the same structure as the second blow molding station 50 except that the shape of the cavity is slightly different, and thus detailed description thereof will be omitted.
  • Members having the same reference numerals as those in the first embodiment, such as the injection molding station 20, the temperature control station 30, and the take-out station 70, are the same as those in the first embodiment, and thus detailed description thereof will be omitted.
  • each station is arranged in two rows on the machine base 11 in two rows.
  • the number of lip mold units 110 is four.
  • the lip type unit 110 shown in FIGS. 12 and 13 is different from the first embodiment in the number of fixing holes and the like in one row, but the basic configuration is similar to that of the first embodiment. Since the lip type unit 110 can be applied, the same reference numerals are given and detailed description will be omitted.
  • the carrier device 1100 shown in FIGS. 12 and 13 includes an upper base 1120 having four through holes 124a, 124b, 124d, and 124e.
  • the four through holes 124a, 124b, 124d, and 124e are provided at positions corresponding to the injection molding station 20, the temperature control station 30, the blow molding station 1040, and the take-out station 70, respectively.
  • the leg portion 121, the guide member 125, the moving device 126, the first pitch conversion mechanism 160, the slide moving device 170, and the like of the transport device 1100 have the same basic configuration as that described in the first embodiment. Since they can be applied, the same reference numerals are given and detailed description will be omitted.
  • the transport path 122 is shorter than that in the first embodiment because the number of stations is not small, but is similar to the first embodiment in that it is a path through which the slide moving device 170 transports the lip type unit 110. Therefore, the same reference numerals are given and detailed description will be omitted.
  • the transport apparatus 1100 according to the present disclosure can be applied to the injection blow molding apparatus 1010 including the four stations.
  • the transport device 1100 may be provided corresponding to the injection molding station 20 and the blow molding station 1040, and may include a movable plate that can be moved up and down while holding the lip mold unit 110.
  • FIG. 14 is a block diagram showing an injection blow molding device 2010 according to yet another embodiment (third embodiment).
  • the injection blow molding apparatus 2010 includes a first injection molding station 2020, a first temperature control station 2030, a second injection molding station 2024, a second temperature control station 2032, a blow molding station 2040, and a take-out operation.
  • the station 70 includes six stations.
  • the blow molding station 2040 and the blow molding die 2041 provided therein are similar to the blow molding station 1040 and the blow molding die 1041 in FIG. 11, respectively.
  • Members having the same reference numerals, such as the take-out station 70 and the lip type unit 110, are the same as those in the first embodiment, and thus detailed description thereof will be omitted.
  • each station is arranged on the machine base 11 in two rows of three stations.
  • the injection blow molding apparatus 1010 is provided with two injection molding stations, a first injection molding station 2020 and a second injection molding station 2024, and is configured to mold a preform having a two-layer structure. ..
  • the transport apparatus 2100 according to the present disclosure can also be applied to the injection blow molding apparatus 2010 including six stations shown in FIG. 14. Note that the carrier device 2100 can be configured by appropriately modifying the carrier device 100 in the first embodiment according to each station of the injection blow molding device 2010, and thus detailed description thereof will be omitted.
  • the injection blow molding device 2010 can mold a preform having a two-layer structure by the following procedure, for example.
  • the outer layer portion of the preform is molded by injecting the resin material from the first injection device 2021 into the first injection molding die 2022.
  • the outer layer portion is transported to the first temperature control station 2030 by the transport device 2100.
  • the first temperature adjustment station 2030 the temperature of the outer layer portion is adjusted in the first temperature adjustment mold 2031 so as to reach a predetermined temperature.
  • the outer layer portion is transported to the second injection molding station 2024 by the transport device 2100.
  • the resin material is injected from the second injection device 2025 into the second injection mold 2026 to mold the inner layer portion inside the outer layer portion of the preform.
  • the transport device 2100 transports the preform including the inner layer portion and the outer layer portion to the second temperature control station 2032.
  • the temperature of the preform is adjusted in the second temperature control mold 2033 so as to reach a predetermined temperature.
  • the method of molding the two-layer structure preform in the injection blow molding apparatus 2010 is not limited to the above-described example, but the inner layer portion is molded in the first injection molding station 2020 and the exterior is molded in the second injection molding station 2024. A mode in which the part is molded may be adopted.
  • a first temperature control station 2030 between the first injection molding station 2020 and the second injection molding station 2024.
  • the second preform portion is molded in the second injection molding station 2024 by sufficiently cooling and solidifying the first preform portion molded in the first injection molding station 2020. The deformation of the first preform portion can be suppressed.
  • the first preform portion By suppressing the deformation of the first preform portion, it is possible to form a two-layer (laminate) preform having a uniform thickness distribution of the inner and outer layers.
  • the sticking property sticking condition: weldability, adhesiveness, adhesiveness
  • the second preform part may be deteriorated (eg, the first: Preform material-PET, second preform material-PET, PP, EVOH).
  • the first temperature control station 2030 between the first injection molding station 2020 and the second injection molding station 2024, the surface of the cooled first preform portion is heated to improve the adhesiveness. It is possible to achieve good adhesion between the first preform portion and the second preform portion.
  • FIG. 15 is a block diagram showing an injection blow molding device 3010 according to still another embodiment (fourth embodiment).
  • the injection blow molding device 3010 includes five stations: a first injection molding station 3020, a second injection molding station 3024, a temperature control station 30, a blow molding station 3040, and a take-out station 70.
  • the blow molding station 3040 and the blow molding die 3041 provided therein are similar to the blow molding station 1040 and the blow molding die 1041 in FIG. 11, respectively.
  • the first injection molding station 3020 and the second injection molding station 3024 are different in arrangement in the injection blow molding apparatus 3010, but the first injection molding station 2020 and the second injection molding station 2024 in FIG. It is a mode similar to.
  • each station is arranged in two rows of three stations on the machine base 11. However, the station between the take-out station 70 and the first injection molding station 3020 is a place where the lip type unit 110 holding nothing is waiting.
  • the injection blow molding apparatus 3010 is provided with two injection molding stations and is configured to mold a preform having a two-layer structure.
  • the transport device 3100 according to the present disclosure can also be applied to the injection blow molding device 3010 including the five stations illustrated in FIG. 15.
  • the carrier device 3100 can be configured by appropriately modifying the carrier device 100 in the first embodiment according to each station of the injection blow molding device 3010, and thus detailed description thereof will be omitted.

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)

Abstract

L'invention concerne un dispositif de transport (100) d'un dispositif de moulage par injection-soufflage (10), comprenant : une unité de type à lèvre (110) qui présente une plaque fixe de type à lèvre et un élément de retenue de plaque ; une base supérieure (120) qui supporte une section de bord de l'unité de type à lèvre (110) d'une manière permettant un mouvement coulissant et dans laquelle un trajet de transport (122), destiné à transporter l'unité de type à lèvre (110) vers des postes d'une manière circulante, est disposé sur sa surface inférieure ; et un moyen de déplacement coulissant (170) destiné à provoquer un déplacement coulissant linéaire de l'unité de type à lèvre (110) le long du trajet de transport (122).
PCT/JP2020/005447 2019-02-13 2020-02-13 Dispositif de moulage par injection-soufflage WO2020166642A1 (fr)

Priority Applications (1)

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JP2019023903 2019-02-13

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Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS57128519A (en) * 1981-02-03 1982-08-10 Katashi Aoki Injection blow molding machine
JPS57159624A (en) * 1981-03-27 1982-10-01 Toshiba Mach Co Ltd Injection stretching blow molding method
JPH03159726A (ja) * 1989-11-17 1991-07-09 Nissei Ee S B Kikai Kk 射出延伸吹込成形方法
JPH0679773A (ja) * 1992-08-31 1994-03-22 Nissei Asb Mach Co Ltd 射出延伸吹込成形方法及び装置
JPH06134845A (ja) * 1992-10-28 1994-05-17 Nissei Asb Mach Co Ltd 射出延伸吹込成形装置
US20130328249A1 (en) * 2011-01-07 2013-12-12 Mould & Matic Solutions Gmbh Installation and method for producing hollow bodies by injection moulding and blow moulding
JP2015128905A (ja) * 2009-09-11 2015-07-16 日精エー・エス・ビー機械株式会社 ネック型アッセンブリー

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Publication number Priority date Publication date Assignee Title
JP3159726B2 (ja) 1991-03-07 2001-04-23 株式会社東芝 熱処理装置
US6217819B1 (en) * 1999-06-07 2001-04-17 Ernst Dieter Wunderlich Universal single-row and multi-row insert stretch blow molding method and apparatus therefor
US6713013B2 (en) * 2002-03-13 2004-03-30 Ernst Dieter Wunderlich Single-row and multi-row stretch blow molding method and apparatus therefor
JP6647144B2 (ja) * 2015-12-11 2020-02-14 株式会社青木固研究所 射出延伸ブロー成形機の射出成形型とプリフォームの成形方法とプリフォーム、及び容器の成形方法と容器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128519A (en) * 1981-02-03 1982-08-10 Katashi Aoki Injection blow molding machine
JPS57159624A (en) * 1981-03-27 1982-10-01 Toshiba Mach Co Ltd Injection stretching blow molding method
JPH03159726A (ja) * 1989-11-17 1991-07-09 Nissei Ee S B Kikai Kk 射出延伸吹込成形方法
JPH0679773A (ja) * 1992-08-31 1994-03-22 Nissei Asb Mach Co Ltd 射出延伸吹込成形方法及び装置
JPH06134845A (ja) * 1992-10-28 1994-05-17 Nissei Asb Mach Co Ltd 射出延伸吹込成形装置
JP2015128905A (ja) * 2009-09-11 2015-07-16 日精エー・エス・ビー機械株式会社 ネック型アッセンブリー
US20130328249A1 (en) * 2011-01-07 2013-12-12 Mould & Matic Solutions Gmbh Installation and method for producing hollow bodies by injection moulding and blow moulding

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JP6799725B1 (ja) 2020-12-16
TWI738213B (zh) 2021-09-01
TW202043007A (zh) 2020-12-01
JP2021037770A (ja) 2021-03-11
JPWO2020166642A1 (ja) 2021-02-18

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