TWI833801B - PET bottle manufacturing device, PET bottle manufacturing method - Google Patents
PET bottle manufacturing device, PET bottle manufacturing method Download PDFInfo
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- TWI833801B TWI833801B TW108132736A TW108132736A TWI833801B TW I833801 B TWI833801 B TW I833801B TW 108132736 A TW108132736 A TW 108132736A TW 108132736 A TW108132736 A TW 108132736A TW I833801 B TWI833801 B TW I833801B
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- preform
- heating
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- pet bottle
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 150
- 238000010438 heat treatment Methods 0.000 claims abstract description 194
- 238000007664 blowing Methods 0.000 claims abstract description 179
- 238000000071 blow moulding Methods 0.000 claims abstract description 77
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 194
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 194
- 239000004033 plastic Substances 0.000 claims description 34
- 229920003023 plastic Polymers 0.000 claims description 34
- 238000002425 crystallisation Methods 0.000 claims description 30
- 230000008025 crystallization Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 14
- -1 polyethylene terephthalate Polymers 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 42
- 230000002087 whitening effect Effects 0.000 description 32
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000035622 drinking Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- IKCQWKJZLSDDSS-UHFFFAOYSA-N 2-formyloxyethyl formate Chemical compound O=COCCOC=O IKCQWKJZLSDDSS-UHFFFAOYSA-N 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
- B29C49/28—Blow-moulding apparatus
-
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown 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
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
提供一種即使係包含耐熱寶特瓶之任何種類之寶特瓶，皆可效率良好地製造，同時整體大小不會大型化，可設置於被限制之空間之寶特瓶製造裝置。 Provided is a PET bottle manufacturing device that can efficiently manufacture any type of PET bottles including heat-resistant PET bottles without enlarging the overall size and can be installed in a restricted space.
一種寶特瓶製造裝置1，其具有：搬運線200，使當作寶特瓶而被吹氣成型之瓶坯，以既定之間隔，依序搬運；瓶坯投入部300，投入瓶坯到搬運線；寶特瓶取出部700，取出被製成之寶特瓶；吹氣成型部600；瓶坯加熱部400，使為了以吹氣成型部吹氣成型瓶坯所必須之加熱，綿延搬運線之既定區間以進行之；以及瓶坯吹風部500，在瓶坯被瓶坯加熱部加熱之過程中，吹風到瓶坯。 A PET bottle manufacturing device 1, which has: a conveying line 200, which carries the preforms blown into shape as PET bottles in sequence at predetermined intervals; a preform input part 300, which puts the preforms into the conveyor line; the PET bottle taking-out part 700, which takes out the made PET bottles; the blow molding part 600; the preform heating part 400, which heats the preforms necessary for blow molding by the blow molding part and extends the conveying line and the preform blowing part 500, which blows air to the preform while the preform is being heated by the preform heating part.
Description
本發明係關於一種以射出成型機成型瓶坯後取出，以吹氣成型機再加熱，以製造寶特瓶之寶特瓶製造裝置。 The invention relates to a PET bottle manufacturing device that uses an injection molding machine to mold a bottle preform, takes it out, and uses a blow molding machine to reheat it to produce a PET bottle.
以射出成型機成型瓶坯後取出，以吹氣成型機再加熱，以製造寶特瓶之寶特瓶製造裝置，係自先前以來即眾所周知(例如參照專利文獻1)。 A device for manufacturing a PET bottle in which the preform is molded by an injection molding machine, is taken out, and reheated by a blow molding machine to produce a PET bottle, has been known for a long time (for example, refer to Patent Document 1).
專利文獻1所述之吹氣成型裝置，如記載於其段落(0024)所示，係具有使複數圓盤狀之托盤，透過托盤水平循環通路，一邊使瓶坯為倒立狀態，一邊分別循環之托盤水平循環通路。而且，在此托盤水平循環通路中，其係包括：瓶坯供給部，投入瓶坯到各托盤；加熱部，加熱被托盤攜帶之瓶坯；吹氣成型部，吹氣成型被托盤攜帶，被加熱部加熱之瓶坯；以及製品回收部，使以吹氣成型部吹氣成型所製成之製品，自托盤回收。 The blow molding device described in Patent Document 1, as described in paragraph (0024), has a plurality of disc-shaped trays, and circulates them individually while keeping the bottle preforms in an inverted state through the horizontal circulation path of the trays. Pallet level circulation path. Moreover, this pallet horizontal circulation path includes: a preform supply part that puts the preforms into each pallet; a heating part that heats the preforms carried by the pallet; and a blow molding part that is carried by the pallet for blow molding. The heating part heats the preforms; and the product recycling part allows the products made by blow molding in the blow molding part to be recycled from the pallet.
[專利文獻] [Patent Document]
〔專利文獻1〕日本特開2004-284016號公報 [Patent Document 1] Japanese Patent Application Publication No. 2004-284016
專利文獻1所述之瓶坯之材質，係由聚酯、聚苯乙烯、聚丙烯、聚萘二甲酸乙二醇酯、聚對苯二甲酸乙二酯所構成。在此，當吹氣成型由例如成為寶特瓶之材質之聚對苯二甲酸乙二酯(PET)所構成之瓶坯時，在由吹氣成型前之加熱裝置所致之瓶坯之加熱過程中，當進行激烈或以超過一定溫度之高 溫加熱時，產生白化現象(結晶化現象)，在其後之吹氣成型中，該部分不會很好地膨脹，而產生不良品之寶特瓶。 The material of the preform described in Patent Document 1 is composed of polyester, polystyrene, polypropylene, polyethylene naphthalate, and polyethylene terephthalate. Here, when blow molding a preform made of, for example, polyethylene terephthalate (PET), which is the material of PET bottles, the preform is heated by a heating device before blow molding. During the process, when it is carried out intensely or at temperatures exceeding a certain temperature, When heated at high temperatures, a whitening phenomenon (crystallization phenomenon) occurs. During the subsequent blow molding, this part will not expand well, resulting in a defective PET bottle.
尤其，與通常之寶特瓶相比較下，為了製造大很多之飲水機用寶特加侖瓶，當吹氣成型瓶坯時，係使用比製造通常之寶特瓶時之瓶坯，還要厚很多之壁厚之瓶坯，所以，因為該部分而加熱量變大。 In particular, in order to make a much larger PET gallon bottle for drinking water dispensers compared with ordinary PET bottles, when blowing the preform, a thicker preform is used than when making ordinary PET bottles. The preform has a lot of wall thickness, so the amount of heating increases due to this part.
因此，當為了提高生產效率而激烈加熱時，會產生上述問題，另外，當為了抑制白化現象之產生而慢慢地加熱時，加熱工序需要很多時間，而生產效率降低。為了持續抑制白化現象產生地加熱，而必須花費較長時間加熱，自瓶坯的外側至內側地滲透熱，所以，加熱部係全長變長，結果，寶特瓶製造裝置本身之大小係大型化。又，也變得花費很多瓶體之製造時間。 Therefore, when heating is performed vigorously in order to improve production efficiency, the above-mentioned problems will occur. In addition, when heating is performed slowly in order to suppress the whitening phenomenon, the heating process requires a lot of time, and production efficiency is reduced. In order to continue heating to suppress the whitening phenomenon, it takes a long time to heat and penetrate the heat from the outside to the inside of the preform. Therefore, the entire length of the heating section becomes longer. As a result, the size of the PET bottle manufacturing device itself becomes larger. . In addition, it also takes a lot of time to produce the bottle.
又，為了製造與具有概略一定直徑之一般性寶特瓶不同之例如三維地模仿受歡迎之動漫人物或做為觀光名勝之有名建築物之異形形狀之寶特瓶，當吹氣成型瓶坯時，也產生同樣之問題。 In addition, in order to produce a plastic bottle with a special shape that is different from a general plastic bottle having a roughly certain diameter, such as a three-dimensional imitation of a popular anime character or a famous building as a tourist attraction, when blow molding the bottle preform , the same problem arises.
具體說來，當製造異形形狀之寶特瓶時，在很多情形下，係使用壁厚比製作通常之寶特瓶時之瓶坯還要厚之瓶坯。異形形狀之寶特瓶係很多在縱橫複雜地延伸，所以，比簡易形狀者的壁厚還要厚，又，在異形形狀之情形下，很多係重視外觀，為了比其他寶特瓶還要突出高級感，經常使用比通常者的壁厚還要厚之瓶坯。因此，為了充分加熱此壁厚較厚之部分，對應其壁厚，必須比通常之瓶坯還要增加很多加熱量。 Specifically, when manufacturing special-shaped plastic bottles, in many cases, a preform with a wall thickness thicker than that used in making ordinary plastic bottles is used. Many PET bottles with special shapes are complicatedly extended vertically and horizontally, so the wall thickness is thicker than those with simple shapes. In addition, in the case of special shapes, many of them focus on appearance in order to stand out from other PET bottles. For a high-end feel, preforms that are thicker than usual are often used. Therefore, in order to fully heat this thicker wall part, corresponding to the wall thickness, a much greater amount of heating must be added than the usual bottle preform.
與用於製造這種通常寶特瓶之瓶坯相比較下，在加熱壁厚較厚之瓶坯時，係經過激烈加熱，所以，立刻產生上述白化現象(結晶化現象)，所以，在壁厚較厚之部分中，也必須以與加熱通常瓶坯時同等之情形加熱。 Compared with the preforms used to make such ordinary PET bottles, when the preforms with thick walls are heated, they are heated intensely, so the above-mentioned whitening phenomenon (crystallization phenomenon) occurs immediately, so the wall thickness is Even thicker parts must be heated in the same manner as normal preforms.
結果，必須使在被托盤攜帶之狀態下，一邊移動搬運線一邊加熱之加熱部之全長較長，以慢慢地加熱。亦即，其係意味：搬運線中之加熱部之 所占長度，係該部分變很長。因此，寶特瓶製造裝置本身也變得很大型化。 As a result, the entire length of the heating portion that is heated while moving the conveyance line while being carried by the pallet must be made longer so that the device can be heated slowly. That is to say, it means: the heating part in the conveying line The length it occupies means that the part becomes very long. Therefore, the PET bottle manufacturing equipment itself has become very large.
如果就裝置之大小言之，係在被限制之空間設置寶特瓶製造裝置，所以，在很多情形下，省空間設計之裝置比起大型機，係更被期望者。又，為了提高生產量，很多時候皆增加裝置台數，但是，空間係被限制，所以，只能設置較少台數之寶特瓶製造裝置。 In terms of the size of the device, the PET bottle manufacturing device is installed in a limited space. Therefore, in many cases, a device with a space-saving design is more desirable than a large computer. In addition, in order to increase production volume, the number of equipment is often increased. However, space is limited, so only a small number of PET bottle manufacturing equipment can be installed.
另外，加熱上述瓶坯之時間，或自瓶坯吹氣成型為寶特瓶皆須一定時間，所以，寶特瓶製造裝置之設置台數變少，係意味寶特瓶生產量降低，結果，有可能無法對應必須在短期間，製造大量寶特瓶以交貨之事態。 In addition, it takes a certain amount of time to heat the above-mentioned bottle preforms or blow the preforms into plastic bottles. Therefore, the number of PET bottle manufacturing equipment is reduced, which means that the production volume of PET bottles is reduced. As a result, It may not be possible to cope with the situation where a large number of PET bottles must be produced and delivered in a short period of time.
當必須在短期間，製造大量寶特瓶以交貨，即所謂被要求大量生產時，當然，必須增加每單位時間之生產支數。因此，使用模具個數較多且生產速度快之量產機用機種係較多，在一般性之量產機之情形下，為了提高生產速度，而增加加熱部之全長，機械變得大型化。 When a large number of PET bottles must be manufactured in a short period of time for delivery, that is, when mass production is required, of course, the production count per unit time must be increased. Therefore, there are many types of mass production machines that use a large number of molds and have fast production speeds. In the case of general mass production machines, in order to increase the production speed, the total length of the heating part is increased, and the machine becomes larger. .
又，一般在提高生產速度時，在使加熱溫度高於通常者之方法下，瓶坯係白化(結晶化)，無法吹氣膨脹至寶特瓶形狀。因此，加熱溫度係無法自通常者做大幅變化，不得不成為提高瓶坯之加熱部通過速度，而且，為了使熱自外側滲透到內側，而加長加熱部全長之裝置，而成為機械變得大型化之問題。 In addition, generally when the production speed is increased and the heating temperature is higher than usual, the preform becomes whitened (crystallized) and cannot be blown and expanded into the shape of a plastic bottle. Therefore, the heating temperature cannot be significantly changed from the normal one, and it is necessary to increase the passing speed of the heating part of the preform, and to extend the entire length of the heating part in order to allow heat to penetrate from the outside to the inside, and the machine becomes larger. The problem of transformation.
而且，也產生關於做為寶特瓶一形態之耐熱寶特瓶之問題。此耐熱寶特瓶，係指可耐受高溫液體填充之寶特瓶。耐熱寶特瓶與一般之常溫瓶之差異，係即使注入高溫之填充物，也不變形。 Furthermore, problems arise regarding heat-resistant PET bottles as a form of PET bottles. This heat-resistant plastic bottle refers to a plastic bottle that can withstand high-temperature liquid filling. The difference between heat-resistant plastic bottles and ordinary room-temperature bottles is that they do not deform even if high-temperature fillings are injected into them.
耐熱寶特瓶之製造工序，係大概與一般之常溫瓶同樣，但是，必須使瓶坯之加熱溫度上昇至即將白化(結晶化)為止。又，在吹氣成型部之吹氣模具也有差異，相對於常溫瓶用吹氣模具係被冷卻，耐熱瓶用吹氣模具係必須以調溫機等，加熱模具。 The manufacturing process of heat-resistant plastic bottles is roughly the same as that of ordinary room-temperature bottles, but the heating temperature of the preform must be increased until it is about to whiten (crystallize). In addition, there is a difference in the blow mold in the blow molding section. While the blow mold for normal temperature bottles is cooled, the blow mold for heat-resistant bottles must be heated by a temperature regulator or the like.
如寶特瓶素材之瓶坯(聚對苯二甲酸乙二酯)之結晶化樹脂，係當施加熱時，變得柔軟而可延伸，但是，當超過某一定溫度時，就白化(結晶化)而變得無法延伸。 For example, the crystallized resin of the preform (polyethylene terephthalate), which is the material of PET bottles, becomes soft and stretchable when heat is applied. However, when it exceeds a certain temperature, it whitens (crystallizes). ) and become unable to extend.
在製造耐熱瓶時，係活用上述特性，必須在瓶坯完全白化前，吹氣以成型瓶體。在完全白化前吹氣之原因，係當完全白化時，即使吹入空氣也不延伸，無法製造寶特瓶製品。 When making heat-resistant bottles, to take advantage of the above characteristics, air must be blown to form the bottle body before the preform is completely whitened. The reason for blowing air before it is completely whitened is that when it is completely whitened, it will not stretch even if air is blown in, and it is impossible to make PET bottle products.
又，為了提高耐熱溫度，瓶坯之加熱溫度及吹氣成型時之模具溫度係愈高愈好。製成之耐熱寶特瓶如果接近白化(結晶化)時，樹脂本身變硬，所以，即使注入高溫之液體，變得也不太會變形。因為這種理由，耐熱寶特瓶係在外觀上，比在通常常溫使用之寶特瓶，還要偏白色。 In addition, in order to increase the heat-resistant temperature, the heating temperature of the preform and the mold temperature during blow molding should be as high as possible. When the heat-resistant plastic bottle is made close to whitening (crystallization), the resin itself becomes hard, so even if high-temperature liquid is poured into it, it becomes less likely to deform. For this reason, the appearance of heat-resistant PET bottles is whiter than that of PET bottles usually used at room temperature.
但是，高溫之熱很難自瓶坯的外側往內側滲透，先前係外側之熱傳遞到內側之前，外側就開始白化，而因為以吹氣成型，無法膨脹至寶特瓶形狀，或者，如果為了避免瓶坯外側之白化，無法加熱瓶坯至即將白化前之理由，而產生只能成型耐熱溫度較低之瓶體之問題。 However, it is difficult for high-temperature heat to penetrate from the outside to the inside of the preform. Previously, the outside began to whiten before the heat from the outside was transferred to the inside. However, because it is blow molded, it cannot expand to the shape of a PET bottle, or if you want to avoid The whitening on the outside of the preform is the reason why the preform cannot be heated until it is about to whiten, resulting in the problem that only bottles with lower heat-resistant temperatures can be formed.
因為有這種問題，在先前中，係在製造耐熱瓶時，必須進行與常溫瓶製造不同之較複雜之製造工序，而此工序係被要求要簡略化。 Because of this problem, in the past, when manufacturing heat-resistant bottles, it was necessary to perform a relatively complicated manufacturing process that was different from manufacturing normal temperature bottles, and this process was required to be simplified.
本發明之目的，係在於提供一種即使為何種寶特瓶，藉使加熱部為必要之最短長度，不浪費多餘時間地，可效率良好且穩定製造良質之寶特瓶，同時整體之大小不會大型化，即使係受限之設置空間，也係更省空間設計之寶特瓶製造裝置。此外，也提供一種當寶特瓶係耐熱寶特瓶時，無須進行複雜之工序就可製造之寶特瓶製造裝置。 The object of the present invention is to provide a kind of PET bottle that can efficiently and stably manufacture high-quality PET bottles without wasting any extra time if the heating part is the shortest length necessary, and at the same time, the overall size will not be reduced. The large-scale PET bottle manufacturing device is a space-saving design even if the installation space is limited. In addition, a PET bottle manufacturing device that can be manufactured without complicated processes when the PET bottle is a heat-resistant PET bottle is also provided.
為了解決上述課題，本發明之申請專利範圍第1項之寶特瓶製造裝置係一種寶特瓶製造裝置，藉吹氣成型而製造寶特瓶，其特徵在於： 前述寶特瓶製造裝置係具有：搬運線，使當作寶特瓶以被吹氣成型之瓶坯，以既定間隔依序搬運；瓶坯投入部，被設於前述搬運線之上游側，投入前述瓶坯到前述搬運線；寶特瓶取出部，被設於前述搬運線之下游側，取出被前述寶特瓶製造裝置所製造之寶特瓶；吹氣成型部，被設於比前述寶特瓶取出部還要靠近前述搬運線之上游側；瓶坯加熱部，被設於在前述搬運線中，前述瓶坯投入部與前述吹氣成型部之間，使為了以該吹氣成型部吹氣成型前述瓶坯所必須之加熱，對於前述瓶坯，綿延前述搬運線之既定區間進行之；瓶坯吹風部，在自前述瓶坯加熱部，至前述吹氣成型部為止之既定處所中，吹風到該瓶坯；以及旋轉裝置，在綿延前述搬運線的一定區間，加熱前述瓶坯時、及吹風到前述瓶坯時，使該瓶坯繞其軸心旋轉。 In order to solve the above problems, the PET bottle manufacturing device of item 1 of the patent application scope of the present invention is a PET bottle manufacturing device that manufactures PET bottles by blow molding. It is characterized by: The above-mentioned PET bottle manufacturing device is provided with: a conveyance line that sequentially conveys the preforms that are blow-molded as PET bottles at predetermined intervals; and a bottle preform input unit that is provided on the upstream side of the aforementioned conveyance line and is inserted into the preforms. The aforementioned bottle blanks are transferred to the aforementioned conveying line; the PET bottle taking-out part is provided on the downstream side of the aforementioned conveying line, and takes out the PET bottles manufactured by the aforementioned PET bottle manufacturing device; and the blow molding part is provided on the downstream side of the aforementioned PET bottle manufacturing device. The special bottle take-out part is also close to the upstream side of the conveyance line; the preform heating part is provided in the conveyance line, between the preform input part and the air blow molding part, so that in order to use the air blow molding part The heating necessary for blow molding the preform is performed on the preform in a predetermined section extending along the conveyance line; the preform blowing section is in a predetermined place from the preform heating section to the blow molding section. , blowing air to the preform; and a rotating device that rotates the preform around its axis when heating the preform and blowing air to the preform in a certain section extending along the conveying line.
又，本發明之申請專利範圍第2項之寶特瓶製造裝置，係在申請專利範圍第1項所述之寶特瓶製造裝置中，前述瓶坯吹風部係被設成在前述瓶坯被前述瓶坯加熱部加熱之過程之至少一部分中，吹風到該瓶坯。 Furthermore, the PET bottle manufacturing device according to claim 2 of the patentable scope of the present invention is the PET bottle manufacturing device described in claim 1 of the patentable scope, and the preform blowing part is provided so that the preform is During at least part of the heating process of the preform heating unit, air is blown to the preform.
又，本發明之申請專利範圍第3項之寶特瓶製造裝置，係在申請專利範圍第2項所述之寶特瓶製造裝置中，於前述瓶坯吹風部，包括使風集中吹到前述瓶坯的既定部分之吹風狹縫導引器。 In addition, the PET bottle manufacturing device according to claim 3 of the patentable scope of the present invention is in the PET bottle manufacturing device described in claim 2 of the patentable scope. The above-mentioned bottle blowing part includes a device that causes the wind to be blown concentratedly to the aforementioned bottle preform blowing part. Air blowing slit guide for a given part of the preform.
又，本發明之申請專利範圍第4項之寶特瓶製造裝置，係在申請專利範圍第1項所述之寶特瓶製造裝置中，前述瓶坯吹風部係被設於自以前述瓶坯加熱部加熱瓶坯開始，至進入吹氣 成型部為止之間之既定位置。 In addition, the PET bottle manufacturing device of claim 4 of the patentable scope of the present invention is the PET bottle manufacturing device described in claim 1 of the patentable scope, and the preform blowing part is provided on the preform. The heating part starts heating the preform and then starts blowing. The established position between the molding part and the molding part.
又，本發明之申請專利範圍第5項之寶特瓶製造裝置，係在申請專利範圍第1項~第4項中任一項所述之寶特瓶製造裝置中，使可吹氣成型為飲水機用寶特加侖瓶之瓶坯，可投入到前述瓶坯投入部。 In addition, the PET bottle manufacturing device according to claim 5 of the patentable scope of the present invention is a PET bottle manufacturing device described in any one of claims 1 to 4 of the patentable scope, so that it can be blown and molded into The preforms of the Gallon bottles for water dispensers can be put into the preform input part mentioned above.
又，本發明之申請專利範圍第6項之寶特瓶製造裝置，係在申請專利範圍第1項~第4項中任一項所述之寶特瓶製造裝置中，使可吹氣成型為具有與具有概略一定直徑之寶特瓶不同之異形形狀之特別形態之寶特瓶之瓶坯，可投入到前述瓶坯投入部。 In addition, the PET bottle manufacturing device of Item 6 of the patentable scope of the present invention is a PET bottle manufacturing device described in any one of Items 1 to 4 of the patentable scope, so that it can be blown and molded into Preforms of PET bottles with a special shape that are different from PET bottles with a roughly certain diameter can be put into the aforementioned preform input part.
又，本發明之申請專利範圍第7項之寶特瓶製造裝置，係在申請專利範圍第1項~第6項中任一項所述之寶特瓶製造裝置中，為了可由前述寶特瓶製造裝置大量生產寶特瓶，前述吹氣成型部係成為一次可吹氣成型複數支寶特瓶之構造 In addition, the PET bottle manufacturing device in claim 7 of the patentable scope of the present invention is a PET bottle manufacturing device described in any one of claims 1 to 6 in the patentable scope, in order to produce the above-mentioned PET bottle. The manufacturing device mass-produces PET bottles, and the aforementioned blow molding unit has a structure that can blow mold multiple PET bottles at one time.
又，本發明之申請專利範圍第8項之寶特瓶製造裝置，係在申請專利範圍第1項~第7項中任一項所述之寶特瓶製造裝置中，前述寶特瓶製造裝置係可製造耐熱性寶特瓶。 In addition, the PET bottle manufacturing device of Item 8 of the patentable scope of the present invention is a PET bottle manufacturing device described in any one of Items 1 to 7 of the patentable scope. The aforementioned PET bottle manufacturing device This system can produce heat-resistant plastic bottles.
又，本發明之申請專利範圍第9項之寶特瓶製造裝置，係在申請專利範圍第1項~第8項中任一項所述之寶特瓶製造裝置中，取代由前述聚對苯二甲酸乙二酯所製成之瓶坯，使在加熱過程中，有時產生結晶化現象之瓶坯，可投入前述瓶坯投入部。 In addition, the PET bottle manufacturing device of Item 9 of the patentable scope of the present invention is a PET bottle manufacturing device described in any one of Items 1 to 8 of the patentable scope, replacing the aforementioned polyparaphenylene. The preforms made of ethylene diformate, which sometimes crystallize during the heating process, can be put into the aforementioned preform input part.
當依據本發明時，係提供一種即使係任何種類之寶特瓶，藉使加熱部為必要之最短，不花費多餘時間地，可效率良好且穩定地製造良質之寶特瓶，同時整體之大小不會大型化，即使係受限之設置空間，也係更省空間設計之寶特瓶製造裝置。此外，也提供一種當寶特瓶係耐熱寶特瓶時，無須進行複 雜之工序就可製造之寶特瓶製造裝置。 According to the present invention, it is possible to provide a plastic bottle of any type that can efficiently and stably produce high-quality PET bottles by making the heating part as short as necessary and without spending unnecessary time, while minimizing the overall size. It does not become large-sized, and is a space-saving PET bottle manufacturing device even if the installation space is limited. In addition, it also provides a method that does not require reconditioning when the PET bottle is a heat-resistant PET bottle. This is a PET bottle manufacturing device that can be manufactured with simple processes.
1,2:寶特瓶製造裝置 1,2:Pote bottle manufacturing device
11:基座 11: base
20:瓶坯 20: Bottle preform
21:口部 21: Mouth
30:寶特瓶 30:Pote bottle
100:模芯 100:Mold core
110:外殼 110: Shell
120:口部組裝部 120:Oral assembly department
130:旋轉連結部 130: Rotary connection part
200:搬運線 200:Conveying line
210:瓶坯搬運線區間 210: Preform handling line section
220:寶特瓶搬運線區間 220: PET bottle handling line section
230:空模芯搬運線區間 230: Empty core transfer line section
250:旋轉裝置 250: Rotary device
300:瓶坯投入部 300: Preform input department
400:瓶坯加熱部 400: Preform heating part
411,412,413,414,415,416 (410):加熱器 411,412,413,414,415,416 (410): Heater
420:加熱部內吹風部 420: Blowing part inside the heating part
500:瓶坯吹風部 500:Preform blowing part
510:鼓風機 510: Blower
520:吹風狹縫導引器 520: Blowing slit guide
521~527:分隔板 521~527: Divider board
550:加熱促進用反射板 550: Reflective plate for heating promotion
600:吹氣成型部 600: Blowing molding department
610:(吹氣成型用)模具 610: (for blow molding) mold
611,612:半部(模具) 611,612: Half (mold)
700:寶特瓶取出部 700:Pote bottle taking out department
800:加熱空氣排氣部 800: Heated air exhaust part
900:中轉吹風部 900:Transit hair drying department
950:中轉區吹風部 950: Air blowing department in transit area
〔圖1〕概略表示本發明第1實施形態之寶特瓶製造裝置之構造之俯視圖。 [Fig. 1] A plan view schematically showing the structure of the PET bottle manufacturing device according to the first embodiment of the present invention.
〔圖2〕自搬運線之上游側觀看通過圖1所示寶特瓶製造裝置的加熱部及吹風部間之瓶坯與模芯之示意圖。 [Figure 2] A schematic view of the bottle preform and mold core passing between the heating section and the blowing section of the PET bottle manufacturing device shown in Figure 1, viewed from the upstream side of the conveyance line.
〔圖3〕表示加熱部對於圖2中之瓶坯之加熱狀態及來自吹風部之吹風狀態之說明圖。 [Fig. 3] An explanatory diagram showing the heating state of the preform in Fig. 2 by the heating unit and the blowing state from the blowing unit.
〔圖4〕對應圖2，以表示加熱部對於圖3中之瓶坯之加熱狀態及來自吹風部之吹風狀態之說明圖。 [Fig. 4] Corresponding to Fig. 2, it is an explanatory diagram showing the heating state of the preform in Fig. 3 by the heating unit and the blowing state from the blowing unit.
〔圖5〕概略表示本發明第2實施形態之寶特瓶製造裝置之構造之俯視圖。 [Fig. 5] A plan view schematically showing the structure of the PET bottle manufacturing device according to the second embodiment of the present invention.
接著，說明本發明第1實施形態之寶特瓶製造裝置1之構造。而且，此寶特瓶製造裝置1，係使以射出成型機成型而取出之瓶坯，以吹氣成型機再加熱而製造寶特瓶之型式之製造裝置。 Next, the structure of the PET bottle manufacturing device 1 according to the first embodiment of the present invention will be described. Furthermore, this PET bottle manufacturing device 1 is a manufacturing device of a type in which a bottle preform molded by an injection molding machine and taken out is reheated by a blow molding machine to manufacture a PET bottle.
以下，依據圖面，詳細說明本發明第1實施形態之(以下，適宜單稱「本實施形態」或「實施形態」)寶特瓶製造裝置1。圖1係概略表示本發明第1實施形態之寶特瓶製造裝置1之構造之俯視圖。又，圖2係自搬運線200之上游側，觀看通過圖1所示寶特瓶製造裝置1的加熱部及吹風部間之瓶坯20與模芯100之示意圖。又，圖3係表示加熱部對於圖2中之瓶坯20之加熱狀態及來自吹風部之吹風狀態之說明圖。又，圖4係對應圖2，以表示加熱部對於圖3所示之瓶坯20之加熱狀態及來自吹風部之吹風狀態之說明圖。而且，在圖1中，為了容易理 解發明與簡略化圖示，而少畫模芯100之數量但是，實際上，雖然因為寶特瓶製造裝置1之大小而不同，但是，比圖示數量還要多之模芯100，係彼此以既定間隔，被搬運線200搬運。 Hereinafter, the plastic bottle manufacturing device 1 according to the first embodiment of the present invention (hereinafter, appropriately referred to as "this embodiment" or "the embodiment") will be described in detail based on the drawings. FIG. 1 is a plan view schematically showing the structure of the PET bottle manufacturing device 1 according to the first embodiment of the present invention. In addition, FIG. 2 is a schematic view of the bottle preform 20 and the mold core 100 passing between the heating part and the blowing part of the plastic bottle manufacturing device 1 shown in FIG. 1 from the upstream side of the conveyance line 200. Moreover, FIG. 3 is an explanatory diagram showing the heating state of the preform 20 in FIG. 2 by the heating part and the blowing state from the blowing part. In addition, FIG. 4 corresponds to FIG. 2 and is an explanatory diagram showing the heating state of the preform 20 shown in FIG. 3 by the heating part and the blowing state from the blowing part. Moreover, in Figure 1, for ease of understanding, To illustrate the invention and simplify the illustration, the number of mold cores 100 is less shown. However, in fact, although the size of the PET bottle manufacturing device 1 is different, the number of mold cores 100 is greater than that shown in the figure. They are conveyed by the conveyance line 200 at predetermined intervals.
本實施形態之寶特瓶製造裝置1(以下，單稱「寶特瓶製造裝置1」)，係一種藉吹氣成型而製造寶特瓶30之寶特瓶製造裝置，其中，其具有：基座11，在設置狀態下，上表面係成為水平；搬運線200，以既定間隔，依序搬運被設置於基座11的上表面，被模芯100承載之瓶坯20；瓶坯投入部300，依序投入瓶坯20到搬運線200的模芯100；瓶坯加熱部400，依序加熱被投入到瓶坯投入部300，被搬運線200搬運之瓶坯20；瓶坯吹風部500，與瓶坯加熱部400相向配置；吹氣成型部600，依序吹氣成型在瓶坯加熱部400中被加熱，被搬運線200輸送之瓶坯20；以及寶特瓶取出部700，依序取出被吹氣成型部600吹氣成型，自瓶坯20被製造成製品，被搬運線200輸送之寶特瓶30。 The PET bottle manufacturing device 1 of this embodiment (hereinafter, simply referred to as the "PET bottle manufacturing device 1") is a PET bottle manufacturing device that manufactures PET bottles 30 by blow molding. It has: a basic When the base 11 is installed, the upper surface is horizontal; the conveying line 200 sequentially conveys the bottle preforms 20 placed on the upper surface of the base 11 and carried by the mold core 100 at predetermined intervals; the bottle preform input part 300 , put the preforms 20 into the mold core 100 of the conveying line 200 in sequence; the preform heating part 400, sequentially heat the preforms 20 that are put into the preform input part 300 and are conveyed by the conveying line 200; the preform blowing part 500, Arranged opposite to the preform heating part 400; the blow molding part 600, which sequentially blow molds the preforms 20 that are heated in the preform heating part 400 and transported by the conveying line 200; and the PET bottle take-out part 700, which sequentially Take out the plastic bottle 30 that has been blow molded by the blow molding part 600, and is manufactured into a product from the preform 20, and is transported by the conveyance line 200.
而且，在配置有瓶坯加熱部400與瓶坯吹風部500之部分，係包括加熱空氣排氣部800。又，在瓶坯加熱部400與吹氣成型部600間之搬運線200的附近，設有中轉吹風部900。 Furthermore, the heated air exhaust part 800 is included in the part where the preform heating part 400 and the preform blowing part 500 are arrange|positioned. Furthermore, a relay blowing unit 900 is provided near the conveyance line 200 between the preform heating unit 400 and the blow molding unit 600 .
在以下之說明中，係適宜地將瓶坯投入部300及與其對應之搬運線200的一部分，稱做瓶坯投入站，將瓶坯加熱部400及瓶坯吹風部500與被其夾持之搬運線200的一部分稱做瓶坯加熱‧吹風站，將吹氣成型瓶坯20之吹氣成型部600及與其對應之搬運線200的一部分，稱做瓶坯吹氣成型站，將中轉吹風部900及與其對應之搬運線200的一部分，稱做中轉站。 In the following description, the preform input part 300 and the corresponding part of the conveying line 200 are appropriately called the preform input station, and the preform heating part 400 and the preform blowing part 500 are clamped by them. A part of the transfer line 200 is called a preform heating and blowing station. The blow molding part 600 of the preform 20 and the corresponding part of the transfer line 200 are called a preform blow molding station. The transfer blowing station The part 900 and the corresponding transport line 200 are called transfer stations.
如圖1所示，搬運線200係俯視呈賽道形狀，一邊使瓶坯20及寶特瓶30分別保持為倒立狀態，一邊移動之模芯100，係以既定間隔被配置，以既定之移動速度，往圖中之逆時針方向移動。而且，關於本實施形態中之搬運線之形狀或模芯之移動方向，只不過係表示本發明之一例者，圖1之搬運線只不過係 一例。亦即，搬運線當然也可以為在俯視呈賽道形狀之外之形狀，同樣地，當然，模芯之移動方向有時也往圖中之順時針方向。 As shown in FIG. 1 , the transfer line 200 is in the shape of a track when viewed from above. The mold cores 100 that are moving while keeping the preforms 20 and the PET bottles 30 in an inverted state are arranged at predetermined intervals and move in a predetermined manner. Speed, moving in the counterclockwise direction in the picture. Furthermore, the shape of the conveyance line and the moving direction of the mold core in this embodiment are merely examples of the present invention, and the conveyance line in Fig. 1 is merely an example of the present invention. An example. That is, of course, the conveying line may have a shape other than the racetrack shape in plan view. Similarly, of course, the moving direction of the mold core may be clockwise in the figure.
而且，搬運線200係由自瓶坯投入部300至吹氣成型部600為止之瓶坯搬運線區間210(僅圖中模芯100所示二重圓的內側之圓，施加有剖面線之區間)、自吹氣成型部600至寶特瓶取出部700為止之寶特瓶搬運線區間220(在圖中模芯100所示二重圓之整體，施加有剖面線之區間)、及自寶特瓶取出部700至瓶坯投入部300為止之空模芯搬運線區間230(在圖中模芯100所示二重圓之整體，未施加有剖面線之區間)之三區間所構成。 Moreover, the conveyance line 200 is the preform conveyance line section 210 from the preform input part 300 to the blow molding part 600 (only the section inside the double circle shown in the mold core 100 in the figure is hatched) , the PET bottle transfer line section 220 from the blow molding part 600 to the PET bottle take-out part 700 (the section with cross-section lines in the entire double circle shown in the mold core 100 in the figure), and the take-out of the PET bottle It is composed of three sections of the empty mold core transfer line section 230 (the entire double circle shown by the mold core 100 in the figure, and no cross-section line is added) from the part 700 to the preform input part 300.
而且，在以瓶坯加熱部400與瓶坯吹風部500間所界定之搬運線200、及中轉吹風部附近的搬運線200之下側，係包括旋轉裝置250。 Furthermore, a rotating device 250 is included below the conveying line 200 defined between the preform heating unit 400 and the preform blowing unit 500 and the conveying line 200 near the relay blowing unit.
旋轉裝置250係藉在瓶坯加熱‧吹風站中，綿延搬運線200之一定區間地加熱瓶坯20間、及在中轉站之兩者中，旋轉模芯100，而使瓶坯20繞其軸心旋轉。 The rotating device 250 is used in the preform heating and blowing station to heat the preforms 20 in a certain section of the conveying line 200 and in the transfer station to rotate the mold core 100 so that the preforms 20 can rotate around it. Axis rotation.
如圖2所示，模芯100係由外殼110、及可裝卸地被固定於外殼110之口部組裝部120所構成。 As shown in FIG. 2 , the mold core 100 is composed of a shell 110 and a mouth assembly portion 120 that is detachably fixed to the shell 110 .
口部組裝部120係被***瓶坯20的口部21，而兩者牢固地嵌合，一邊使瓶坯20及吹氣成型後之寶特瓶30保持垂直地倒立之狀態，一邊保持在模芯100上。 The mouth assembly part 120 is inserted into the mouth 21 of the preform 20, and the two are firmly fitted, so that the preform 20 and the blow-molded PET bottle 30 are kept in a vertical and inverted state while being held in the mold. Core 100 on.
而且，在模芯100之下側，係包括與設有加熱‧吹風站及中轉站之旋轉裝置連動，以旋轉模芯100本身之旋轉連結部130。 Moreover, the lower side of the mold core 100 includes a rotary connecting portion 130 that is linked to a rotating device provided with a heating and blowing station and a transfer station to rotate the mold core 100 itself.
瓶坯投入部300係發揮在搬運線上之空模芯100到達瓶坯投入站後，嵌入瓶坯20的口部21到空模芯100的口部組裝部120，使瓶坯20在模芯100為倒立狀態，依序供給多數之瓶坯20到下一加熱‧吹風站之角色。而且，在瓶坯投入部300，係使用專用之投入裝置或直交座標型之機械臂等種種眾所周知之裝 置。 The preform input part 300 is used for inserting the mouth 21 of the preform 20 into the mouth assembly part 120 of the empty mold core 100 after the empty mold core 100 on the conveying line arrives at the preform input station, so that the bottle preform 20 is inserted into the mold core 100 In an inverted state, a plurality of bottle preforms 20 are sequentially supplied to the next heating and blowing station. Moreover, in the preform input part 300, various well-known devices such as a dedicated input device or a rectangular coordinate type robotic arm are used. Set.
瓶坯加熱部400係相對於佔據搬運線200的一定區間之加熱‧吹風站之搬運線200而言，被設於一邊之側。瓶坯加熱部400，係具有在圖1中，係使綿延搬運線200之前方側以在水平方向上延伸之一定長度之加熱器411,412,413,414,415,416(410)，於圖2所示之實線之垂直方向上，以既定間隔配置複數支(在本實施形態中，為了理解發明及容易化圖示，係表示較少支數之六支)之構造。而且，最下段之加熱器411之配置高度，係成為適合於施加藉吹氣成型而使其附近膨脹之加熱量，到被模芯100承載，通過加熱‧吹風站之瓶坯20的除了口部21附近之高度。而且，實際上，加熱器之數量係因為寶特瓶製造裝置之機種而不同，通常例如10支以上等，比本實施形態還要多支數之加熱器，係以既定間隔被配置，可對應高度不同之瓶坯之加熱。 The preform heating unit 400 is provided on one side of the conveying line 200 of the heating and blowing station occupying a certain section of the conveying line 200 . The preform heating section 400 has heaters 411, 412, 413, 414, 415, 416 (410) extending in the horizontal direction to a certain length in the front side of the conveyance line 200 in Figure 1, in the vertical direction of the solid line shown in Figure 2 Above, a plurality of branches (in this embodiment, a smaller number of six branches are shown in order to understand the invention and simplify the illustration) are arranged at predetermined intervals. Moreover, the height of the heater 411 in the lowermost section is suitable for applying the heating amount caused by the expansion of the surrounding area by blow molding to the opening of the preform 20 that is carried by the mold core 100 and passes through the heating and blowing station. Height around 21. In addition, the number of heaters actually differs depending on the model of the PET bottle manufacturing device. Generally, for example, 10 or more heaters are arranged at predetermined intervals to correspond to a larger number of heaters than in this embodiment. Heating of preforms with different heights.
又，在各加熱器410之內側，係包括加熱部內吹風部420。加熱部內吹風部420係由風扇或鼓風機所構成，發揮在各加熱器410中，被加熱之空氣不滯留在加熱器內，高效率地加熱加熱‧吹風站內的瓶坯20之角色(參照圖4之自右往左之細波浪線之箭頭)。 Furthermore, each heater 410 includes an inner heating unit blowing unit 420 inside. The blowing part 420 in the heating part is composed of a fan or a blower, and plays a role in each heater 410 so that the heated air does not remain in the heater and efficiently heats the preforms 20 in the heating and blowing station (see Figure 4 (arrow with thin wavy lines from right to left).
瓶坯加熱部400加熱各瓶坯20之加熱量，可藉調整加熱器，而設定較高。當不作動瓶坯吹風部500時，瓶坯20的至少一部分係白化(結晶化)，但是，當作動瓶坯吹風部500時，可使加熱量為即使高溫加熱，也不產生這種白化(結晶化)。亦即，其與不具有瓶坯吹風部500之先前之寶特瓶製造裝置相比較下，在加熱‧吹風站內的搬運線200中，可使每個瓶坯20之加熱量較多。 The heating amount of the preform heating unit 400 for heating each preform 20 can be set higher by adjusting the heater. When the preform blowing part 500 is not actuated, at least a part of the preform 20 is whitened (crystallized). However, when the preform blowing part 500 is actuated, the amount of heating can be such that such whitening does not occur even if the preform blowing part 500 is heated at high temperature ( crystallization). That is, compared with the previous PET bottle manufacturing device that does not have the preform blowing part 500, each preform 20 can be heated more in the conveying line 200 in the heating and blowing station.
瓶坯吹風部500係相對於佔據搬運線200的一定區間之加熱‧吹風站的搬運線200而言，被設於瓶坯加熱部400之另一邊之側。而且，瓶坯吹風部500係在此未詳細圖示，但是，其具有風扇、鼓風機、空壓機等之鼓風機510、及用於使被鼓風機510送風之氣流，局部性吹到瓶坯整體之吹風狹縫導引器520。 The preform blowing part 500 is provided on the other side of the preform heating part 400 with respect to the conveying line 200 of the heating and blowing station that occupies a certain section of the conveying line 200 . Moreover, the preform blowing part 500 is not shown in detail here, but it has a blower 510 such as a fan, a blower, an air compressor, and the like, and is used to blow the air flow blown by the blower 510 to the entire preform locally. Blower slit guide 520.
如圖3所示，吹風狹縫導引器520係被成使複數塊分隔板521~527，彼此以既定間隔，被配置往同一方向。而且，被鼓風機510送風之空氣，係分別通過構成吹風狹縫導引器520之分隔板521~527間以被整流，自各狹縫導引器局部性吹到瓶坯整體(參照圖3中之吹風狹縫導引器520間所示之反白箭頭及圖4中之吹風狹縫導引器520所示之自左側往右側之反白箭頭)。也就是說，如圖3所示，在綿延搬運線200的一定區間而瓶胚20被搬運的時候，交互重複進行藉由瓶坯加熱部400(各加熱器410)之加熱與藉由瓶坯吹風部500之冷卻。 As shown in FIG. 3 , the blowing slit guide 520 is arranged such that a plurality of partition plates 521 to 527 are arranged in the same direction at predetermined intervals from each other. Moreover, the air blown by the blower 510 is rectified by passing through the partition plates 521 to 527 constituting the blowing slit guide 520, and is locally blown to the entire preform from each slit guide (see Figure 3 The highlighted arrows shown between the blowing slit guides 520 and the highlighted arrows from the left to the right shown between the blowing slit guides 520 in FIG. 4 ). That is, as shown in FIG. 3 , when the preforms 20 are conveyed over a certain section of the conveyance line 200 , heating by the preform heating unit 400 (each heater 410 ) and heating by the preforms are alternately repeated. Cooling of the blowing part 500.
而且，在本實施形態中，為了理解發明及容易化圖示，而使吹風狹縫們之間隔較寬，吹風狹縫之塊數較少，但是，實際上，並不侷限於這種形態，而係考慮往瓶坯之吹風效果，設置較多之吹風狹縫導引器。 Furthermore, in this embodiment, in order to understand the invention and simplify the illustration, the intervals between the blowing slits are wide and the number of blowing slits is small. However, in practice, it is not limited to this form. Considering the effect of blowing air to the preform, more air blowing slit guides are installed.
亦即，透過吹風狹縫導引器520而往各瓶坯20吹出之空氣，係被加熱器加熱，吹到在搬運線200上，一邊繞軸心旋轉一邊移動之瓶坯20之整體。藉此，發揮抑制基於被各加熱器410加熱之瓶坯20的表面之激烈溫度上昇，而產生白化現象(結晶化現象)之角色，又，藉縮小瓶坯內外表面之溫度差，可做成最適合瓶體成型之瓶坯狀態。 That is, the air blown to each preform 20 through the blowing slit guide 520 is heated by the heater and blown to the entire preform 20 moving on the conveyance line 200 while rotating around the axis. This plays a role in suppressing the whitening phenomenon (crystallization phenomenon) caused by the rapid temperature rise on the surface of the preform 20 heated by each heater 410, and by reducing the temperature difference between the inner and outer surfaces of the preform, it can be made The preform state is most suitable for bottle molding.
由瓶坯吹風部500所做之往各瓶坯20之吹風量，係當不作動瓶坯吹風部500時，藉來自瓶坯加熱部400之高溫加熱，瓶坯20的至少一部分係白化(結晶化)，但是，當作動瓶坯吹風部500時，可調整吹風量，使得即使高溫加熱，也不產生這種白化(結晶化)。 The amount of air blown by the preform blowing part 500 to each preform 20 is that when the preform blowing part 500 is not operated, at least a part of the preform 20 is whitened (crystallized) by the high-temperature heating from the preform heating part 400 ), however, when operating the preform blowing part 500, the blowing volume can be adjusted so that such whitening (crystallization) does not occur even if the preform is heated at high temperature.
而且，瓶坯吹風部500係在本實施形態中，不進行自動變頻控制。其理由係在於：當進行自動變頻控制時，藉瓶坯加熱部400內之溫度，而馬達被自動地控制，風量係改變，被加熱之瓶坯20之表面溫度也變得混雜。因此，在本實施形態中，係具有條件，使得關於吹到瓶坯20之風之強弱調整，係使其也可藉手動進行，在一邊加熱相同批次之瓶坯20一邊吹風時，必定成為相同風量。但是，如果在可充分發揮本發明之作用之範圍內，也可藉此實施形態以外之控制方法，吹風到加熱中之瓶坯20。 Furthermore, in this embodiment, the preform blowing part 500 is not subject to automatic frequency conversion control. The reason is that when automatic frequency conversion control is performed, the motor is automatically controlled based on the temperature in the preform heating part 400, the air volume changes, and the surface temperature of the heated preform 20 also becomes mixed. Therefore, in this embodiment, there is a condition that the intensity of the wind blowing to the preforms 20 can be adjusted manually. When blowing the preforms 20 of the same batch while heating them, it must become Same air volume. However, as long as the effect of the present invention is fully exerted, air may be blown to the heated preform 20 by a control method other than that of the embodiment.
加熱空氣排氣部800係被設置於瓶坯加熱部400與瓶坯吹風部500間之空間之上方。加熱空氣排氣部800係發揮使在加熱加熱‧吹風站中所產生之瓶坯20後之空氣，整體性吸入以排出到外部之角色(參照在圖4中，往加熱空氣排氣部800彎曲之朝上之箭頭)。 The heated air exhaust part 800 is provided above the space between the preform heating part 400 and the preform blowing part 500 . The heated air exhaust part 800 plays a role of sucking in the air behind the preform 20 generated in the heating and blowing station and exhausting it to the outside (refer to FIG. 4, bending toward the heated air exhaust part 800 the upward arrow).
而且，在本實施形態中，如上所述，瓶坯20的口部21(吹氣成型後之寶特瓶30的飲用口部)係朝下，所以，加熱空氣排氣部800係被設置於瓶坯加熱部400與瓶坯吹風部500間之空間之上方。但是，當對應寶特瓶製造裝置1之構造，而瓶坯20的口部21(吹氣成型後之寶特瓶30的飲用口部)成為朝上之形態時，有時被加熱之空氣係不吹到瓶坯20的口部21地，使加熱後之空氣排出到下側地，設置加熱空氣排氣部800到加熱‧吹風站。 Furthermore, in this embodiment, as mentioned above, the mouth 21 of the preform 20 (the drinking mouth of the blow molded plastic bottle 30) faces downward, so the heated air exhaust part 800 is provided at Above the space between the preform heating part 400 and the preform blowing part 500. However, when the mouth portion 21 of the preform 20 (the drinking mouth portion of the blow-molded PET bottle 30) is facing upward according to the structure of the PET bottle manufacturing device 1, the heated air may be In order to discharge the heated air to the lower side without blowing onto the mouth 21 of the preform 20, a heated air exhaust part 800 is provided at the heating and blowing station.
中轉吹風部900係被設於自加熱‧吹風站，進入到吹氣成型站為止之待機位置，亦即，被設於在被安裝於前一個模芯100之瓶坯20，被吹氣成型部600吹氣成型時，當作停留於各模芯100之位置之中轉站，發揮自加熱‧吹風站被加熱而送出，以即將進入吹氣成型部600的模具611,612(610)之瓶坯20，更加被吹風之角色。而且，中轉吹風部900係與瓶坯吹風部500同樣地，使用風扇或鼓風機、空壓機等之適當之吹風裝置。 The transfer blowing part 900 is installed in the standby position until the self-heating and blowing station enters the blow molding station. That is, it is installed in the preform 20 installed in the previous mold core 100 to be blown and molded. When the blow molding part 600 is in the process of blow molding, it serves as a transfer station that stays at the position of each mold core 100, and exerts self-heating. The blowing station is heated and sent out, so that the preforms that are about to enter the molds 611, 612 (610) of the blow molding part 600 20. A more blown character. Moreover, the relay blowing part 900 uses an appropriate blowing device such as a fan, a blower, or an air compressor, similarly to the preform blowing part 500.
在中轉站中，也有熱滲透到瓶坯20中，而白化現象(結晶化現象)進展之虞，所以，必須對應即將被吹氣成型之瓶坯20之結晶化狀態，決定是否進行中轉吹風部900中之吹風。亦即，在中轉站中，當清楚瓶坯20尚未白化(結晶化)時，就無須作動此中轉吹風部900。 In the transfer station, heat may penetrate into the preform 20 and the whitening phenomenon (crystallization phenomenon) may progress. Therefore, it is necessary to determine whether to transfer the preform 20 according to the crystallization state of the preform 20 that is about to be blown. The blower in the blower part 900. That is, in the transfer station, when it is clear that the preform 20 has not been whitened (crystallized), there is no need to activate the transfer blowing part 900 .
而且，在圖1中，於瓶坯加熱部400及瓶坯吹風部500與吹氣成型部600間之搬運線200附近的一部分，即瓶坯20在吹氣成型前之暫時待機位置，設有中轉吹風部900，但是，也可以沿著搬運線200，在其附近整體性設置。 Furthermore, in FIG. 1 , a portion near the conveyance line 200 between the preform heating section 400 and the preform blowing section 500 and the blow molding section 600 , that is, the temporary waiting position of the preform 20 before the blow molding, is provided. However, the relay blowing unit 900 may be integrally installed along the conveyance line 200 and in the vicinity thereof.
吹氣成型部600係橫跨搬運線200地被設置。而且，當吹氣成型前 之瓶坯20係自搬運線200之上游側，被安裝到模芯100以移動時，如圖1所示，模具610的半部611,612們係彼此離隙以成開放狀態，在寶特瓶成型站，模芯100及被嵌入之瓶坯20係如界定地，被定位以停止。而且，在這些停止後，模具610的半部611,612們係彼此抵接以成閉塞狀態，構成吹氣成型用模具610。而且，在此狀態中，進行吹氣成型，自瓶坯20成型為寶特瓶30後，再度模具610的半部611,612們係彼此離隙以成開放狀態，使吹氣成型後之寶特瓶30，自各模芯100往寶特瓶取出部700移動。 The blow molding part 600 is installed across the conveyance line 200 . Moreover, before blow molding When the bottle preform 20 is moved from the upstream side of the conveying line 200 to the mold core 100, as shown in Figure 1, the halves 611 and 612 of the mold 610 are spaced apart from each other to form an open state, and the plastic bottle is formed. Station, the mold core 100 and the embedded bottle preform 20 are positioned to stop as defined. After these stops, the half portions 611 and 612 of the mold 610 come into contact with each other to be in a closed state, thereby forming the blow molding mold 610 . Moreover, in this state, blow molding is performed. After the bottle preform 20 is molded into the PET bottle 30, the halves 611 and 612 of the mold 610 are spaced apart from each other again to be in an open state, so that the PET bottle after the blow molding is 30. Move from each mold core 100 to the PET bottle taking-out part 700.
寶特瓶取出部700係發揮與瓶坯投入部300相反地，在吹氣成型部600中，成型為寶特瓶30，在安裝於模芯100之狀態下，使在搬運線200移動之寶特瓶30，在寶特瓶取出站中，當作製品被取出之角色。而且，在寶特瓶取出部700中，係與瓶坯投入部300同樣地，係使用專用之取出裝置或直交座標型之機械臂等之種種眾所周知之裝置。 The PET bottle take-out section 700 is opposite to the preform input section 300. In the blow molding section 600, the PET bottle 30 is molded and moved on the conveyance line 200 while being mounted on the mold core 100. Special bottle 30 is a character who is taken out as a product in the special bottle taking-out station. Moreover, in the PET bottle taking-out part 700, similarly to the preform inserting part 300, various well-known devices such as a dedicated taking-out device or a rectangular coordinate type robotic arm are used.
在基座11係包括用於使上述本實施形態之寶特瓶製造裝置1的各構成元件，一邊以既定之動作時間彼此同步一邊動作之控制裝置(在圖面中係未圖示)，同時包括寶特瓶製造裝置1之操作者，用於操作裝置，或者，確認裝置之作動狀況之輸入裝置及顯示裝置(在圖面中係未圖示)。 The base 11 includes a control device (not shown in the drawing) for causing each component of the PET bottle manufacturing device 1 of the present embodiment to operate while synchronizing with each other at a predetermined operating time. It includes an input device and a display device (not shown in the drawing) used by the operator of the PET bottle manufacturing device 1 to operate the device or confirm the operating status of the device.
接著，說明使用本實施形態寶特瓶製造裝置1之寶特瓶30之製造方法。最初，係在瓶坯投入部300中，瓶坯20係依序一支一支地被***各模芯100的口部組裝部120。而且，沿著瓶坯搬運線區間，往加熱‧吹風站被搬運。在接近加熱‧吹風站之階段，各模芯100係藉旋轉裝置250而旋轉。伴隨於此，被嵌入各口部組裝部120之瓶坯20，也與各口部組裝部120一同地繞其軸心旋轉。 Next, the manufacturing method of the PET bottle 30 using the PET bottle manufacturing apparatus 1 of this embodiment is demonstrated. Initially, the preforms 20 are inserted into the mouth assembly part 120 of each mold core 100 one by one in the preform insertion part 300. Furthermore, the preforms are transported along the section of the conveying line to the heating and blowing station. At the stage of approaching the heating and blowing station, each mold core 100 is rotated by the rotating device 250. Along with this, the preform 20 embedded in each mouth assembly portion 120 also rotates around its axis together with each mouth assembly portion 120 .
而且，瓶坯20係一邊旋轉，一邊通過加熱‧吹風站的瓶坯加熱部400與瓶坯吹風部500之間。在通過加熱‧吹風站時，當沒有來自瓶坯吹風部之局部性吹風時，瓶坯20之至少表面會白化(變得結晶化)程度之比通常還要大 之加熱量，係由各加熱器410施加。 Furthermore, the preform 20 passes between the preform heating part 400 and the preform blowing part 500 of the heating and blowing station while rotating. When passing through the heating and blowing station, when there is no local blowing from the preform blowing part, at least the surface of the preform 20 will whiten (become crystallized) to a greater extent than usual. The heating amount is applied by each heater 410.
亦即，這種加熱量係自瓶坯加熱部400施加，另外，藉來自瓶坯吹風部500之局部性吹風，一邊瓶坯20之白化現象(結晶化現象)被阻止，一邊瓶坯20依序通過加熱‧吹風站。 That is, this amount of heating is applied from the preform heating part 400. In addition, by the local blowing from the preform blowing part 500, the whitening phenomenon (crystallization phenomenon) of the preform 20 is prevented while the preform 20 remains Pass through the heating and blowing station.
如此一來，加熱加熱‧吹風站內中之瓶坯20後之空氣，係透過加熱空氣排氣部800，而總是被排出，極限地壓抑在通過加熱‧吹風站之瓶坯20，產生上述瓶坯20之白化現象(結晶化現象)之瓶坯加熱部400之加熱量及吹風量，係總是平衡良好地被供給到瓶坯20。而且，加熱後之空氣，係被排出到瓶坯20的口部21之相反側，所以，可僅加熱瓶坯20的必須加熱部分。 In this way, the air behind the bottle preform 20 in the heating and blowing station is always exhausted through the heated air exhaust part 800, and is extremely suppressed on the bottle preform 20 passing through the heating and blowing station, resulting in the above-mentioned bottle The heating amount and air blowing amount of the preform heating unit 400 that cause the whitening phenomenon (crystallization phenomenon) of the preform 20 are always supplied to the preform 20 in a well-balanced manner. Furthermore, the heated air is discharged to the side opposite to the mouth 21 of the preform 20, so only the necessary heating portion of the preform 20 can be heated.
構成本發明之做為特徵性部分之加熱‧吹風站之瓶坯加熱部400之長度，係比先前之寶特瓶製造裝置還要短，所以，通過此之瓶坯20不會在短時間產生白化現象(結晶化現象)，而可吹氣成型地被效率良好地加熱。 The length of the preform heating part 400 that constitutes the heating and blowing station as a characteristic part of the present invention is shorter than that of the previous PET bottle manufacturing device, so the preform 20 passing through it will not be produced in a short time. The whitening phenomenon (crystallization phenomenon) is eliminated, and the blow molding process is efficiently heated.
在加熱‧吹風站被加熱之瓶坯20，係在被安裝於模芯100的口部組裝部120之狀態下待機，直到在中轉站中，被搬運到其前之瓶坯20，係在吹氣成型站中，被吹氣成型為止。在此時，藉模芯100被旋轉裝置250旋轉，瓶坯20也與口部組裝部120一同持續旋轉。而且，藉被設於中轉站之中轉吹風部900，風吹到瓶坯20的軸心之全周，防止白化現象(結晶化現象)在中轉站產生之情事。 The preform 20 heated at the heating and blowing station waits in a state of being installed in the mouth assembly part 120 of the mold core 100 until the preform 20 is transported to the transfer station and is attached to the mouth assembly part 120 of the mold core 100. In the blow molding station, until it is blown into shape. At this time, the mold core 100 is rotated by the rotating device 250, and the preform 20 also continues to rotate together with the mouth assembly part 120. Furthermore, by providing the transfer air blowing unit 900 at the transfer station, the air is blown to the entire circumference of the axis of the preform 20, thereby preventing the whitening phenomenon (crystallization phenomenon) from occurring at the transfer station.
先行之瓶坯20之吹氣成型結束後，吹氣成型站的吹氣成型用模具610係被開放，持續被加熱之瓶坯20係在被安裝於口部組裝部120之狀態下，每個模芯100係移動至吹氣成型站以停止。而且，吹氣成型用模具610係閉塞，瓶坯20係被吹氣成型至寶特瓶30之大小。 After the blow molding of the preceding bottle preform 20 is completed, the blow molding mold 610 of the blow molding station is opened, and the bottle preform 20 that continues to be heated is in a state of being installed in the mouth assembly part 120. The mold core 100 moves to the blow molding station to stop. Furthermore, the blow molding mold 610 is closed, and the preform 20 is blow molded to the size of the plastic bottle 30 .
被吹氣成型之寶特瓶30，係在其飲用口部嵌合於口部組裝部120之狀態下，每個模芯100係直到寶特瓶取出站為止，移動在搬運線200的寶特瓶 搬運線區間。而且，在寶特瓶取出站中，於模芯100停止後之狀態下，藉寶特瓶取出部700，自模芯100的口部組裝部120依序取出當作製品之寶特瓶30。 The blow-molded PET bottle 30 is in a state where its drinking mouth is fitted into the mouth assembly part 120, and each mold core 100 is moved on the conveying line 200 until the PET bottle take-out station. bottle Transport line section. Moreover, in the PET bottle taking-out station, in a state where the mold core 100 is stopped, the PET bottles 30 as finished products are sequentially taken out from the mouth assembly part 120 of the mold core 100 by the PET bottle taking-out part 700 .
自口部組裝部120被取出寶特瓶30後之空模芯100，係通過搬運線200的空模芯搬運線區間，再度移動至瓶坯投入站，再次重複上述之一連串工序。 After the plastic bottle 30 is taken out from the mouth assembly part 120, the empty mold core 100 passes through the empty mold core conveying line section of the conveying line 200 and is moved to the preform input station again, where the above-mentioned series of processes are repeated again.
如此一來，使成為寶特瓶製造裝置之生產效率及小型化之瓶頸之加熱站，在本發明中，改變為與先前不同之加熱‧吹風站，藉此，大幅提高其生產效率，同時使寶特瓶製造裝置本身達成小型化。 As a result, the heating station, which has become a bottleneck in the production efficiency and miniaturization of the PET bottle manufacturing device, is changed into a heating and blowing station that is different from the previous one in the present invention, thereby greatly improving its production efficiency and at the same time making it more efficient. The PET bottle manufacturing equipment itself has been miniaturized.
接著，更詳細說明在將上述實施形態當作一例之本發明寶特瓶製造裝置中，與先前不同地，特別設置瓶坯吹風部或中轉吹風部，積極地吹風到瓶坯之理由。 Next, the reason why the plastic bottle manufacturing apparatus of the present invention, which takes the above embodiment as an example, is specially provided with a preform blowing part or a relay blowing part to actively blow air to the preforms, unlike the previous ones, will be explained in more detail.
施加熱到由聚對苯二甲酸乙二酯(PET)所構成之瓶坯之問題點，有在加熱工序中，以超過一定溫度之溫度急速加熱時，其表面係結晶化(白化)，在其後之吹氣成型工序中，變得無法再延伸。亦即，在吹氣成型工序中，該結晶化後之部分變得不再延伸之瓶坯，係被吹氣成型為不具有規定形狀之不良品之寶特瓶。因此，加熱工序中之加熱器之提高溫度之方法，也產生極限，必須沿著搬運線，設置某程度較長之加熱站。 The problem with applying heat to a preform made of polyethylene terephthalate (PET) is that when it is rapidly heated to a temperature exceeding a certain temperature during the heating process, its surface crystallizes (whitens). In the subsequent blow molding process, it becomes impossible to stretch. That is, in the blow molding process, the bottle preform in which the portion after crystallization is no longer stretched is blow molded into a defective PET bottle that does not have a predetermined shape. Therefore, the method of raising the temperature of the heater in the heating process also has limitations, and a relatively long heating station must be installed along the conveying line.
尤其，在壁厚較厚之瓶坯之情形下，必須旋轉模芯，以加熱器充分加熱自瓶坯本身之厚度方向之表面至內側表面為止之厚度較大之部分。因此，當藉加熱器以高溫自瓶坯的表面部分加熱，使得充分加熱至內側表面時，在瓶坯的表面與內側表面係產生溫度差。亦即，自表面至內側為止之溫度變化之斜度變大。 In particular, in the case of a preform with a relatively thick wall, the mold core must be rotated to fully heat the thicker portion from the surface in the thickness direction of the preform itself to the inner surface with the heater. Therefore, when the surface portion of the preform is heated at a high temperature by a heater to fully heat the inner surface, a temperature difference is generated between the surface and the inner surface of the preform. That is, the gradient of the temperature change from the surface to the inside becomes larger.
在加熱瓶坯的內側表面至到達既定溫度後之狀態下，在僅自瓶坯的表面加熱之關係上，厚度方向都會產生溫度斜度，而瓶坯表面之溫度變高溫，有時僅表面會白化(結晶化)。 When the inner surface of the preform is heated to a predetermined temperature, and only the surface of the preform is heated, a temperature gradient occurs in the thickness direction, and the temperature of the surface of the preform becomes high. Sometimes only the surface will Albination (crystallization).
當即使瓶坯的一部分白化(結晶化)，而無法如規定地膨脹時，不會成為期望之寶特瓶形狀，而成為不良品，只能以此狀態廢棄或再度裁斷成片狀以回收，所以，製品之材料利用率降低。 When even a part of the preform whitens (crystallizes) and fails to expand as required, it will not become the desired shape of the plastic bottle and becomes a defective product. It can only be discarded in this state or cut into sheets again for recycling. Therefore, the material utilization rate of the product is reduced.
因此，先前係在加熱壁厚較厚之瓶坯時，或者，提高生產速度時，必須使加熱站之長度沿著搬運線增長很多。結果，導致寶特瓶製造裝置本身之大型化，又，為了提高生產速度，在增長加熱站之長度也有其限制，所以，寶特瓶之生產效率係被限制。 Therefore, in the past, when heating preforms with thicker wall thickness, or when increasing production speed, the length of the heating station had to be increased a lot along the handling line. As a result, the PET bottle manufacturing equipment itself has been enlarged. In addition, in order to increase the production speed, there are limitations on increasing the length of the heating station. Therefore, the production efficiency of PET bottles is limited.
但是，當依據本發明時，在加熱‧吹風站中，瓶坯被加熱器加熱之同時，自瓶坯吹風部的吹風狹縫導引器，局部性吹風到該瓶坯，藉此，例如即使係壁厚較厚之瓶坯，內外面之溫度差也縮小，不費多餘時間，就可以做出使內側表面達到不白化(結晶化)之既定溫度之狀態。 However, according to the present invention, in the heating and blowing station, while the preform is heated by the heater, air is locally blown to the preform from the blowing slit guide of the preform blowing part, so that, for example, even Since the wall thickness of the preform is relatively thick, the temperature difference between the inside and the outside is also reduced, so it is possible to achieve a state where the inner surface reaches a predetermined temperature without whitening (crystallization) without spending extra time.
而且，在自加熱‧吹風站送出之瓶坯，進入吹氣成型用之模具為止之間所界定之中轉(待機)區間中，也變得吹風，所以，可提高其效果。 Furthermore, the preforms sent out from the heating and blowing station are also blown in the transit (standby) section defined between the preforms entering the mold for blow molding, so the effect can be improved.
亦即，在本發明中，係發明者著眼於藉如上述之瓶坯吹風部，在加熱‧吹風站及中轉站中，做出吹風部分，強制冷卻瓶坯的表面，藉此，即使提高加熱裝置之加熱器溫度，也可防止瓶坯的表面產生白化現象(結晶化現象)之情事，其有技術上之重大意義。 That is, in the present invention, the inventor focuses on using the above-mentioned preform blowing part to create a blowing part in the heating and blowing station and the transfer station to forcibly cool the surface of the preform, thereby improving the The heater temperature of the heating device can also prevent whitening (crystallization) on the surface of the preform, which is of great technical significance.
又，此吹風中，瓶坯係總是藉旋轉裝置旋轉，所以，加熱器之熱係均勻地施加到瓶坯的外周面，同時自吹風部的導引狹縫吹出之風係均勻地吹出。 In addition, during this blowing, the preform is always rotated by the rotating device, so the heat of the heater is evenly applied to the outer peripheral surface of the preform, and at the same time, the wind blown out from the guide slit of the blowing part is evenly blown out.
結果，使加熱器之熱自表面吹到瓶坯，在滲透到瓶坯內側之過程中，可防止如先前般地，瓶坯的表面變高溫而產生白化(結晶化)之情事。 As a result, the heat of the heater is blown from the surface to the preform, and in the process of penetrating into the inside of the preform, it is possible to prevent the surface of the preform from becoming high and causing whitening (crystallization) as before.
又，藉吹風到瓶坯的表面，即使比先前還要高溫地加熱瓶坯，也抑制表面之白化(結晶化)，同時與先前相比較下，可立即傳熱到瓶坯內側， 所以，表面與內表面之溫度差變小。結果，可做成在瓶坯表面不產生白化(結晶化)地，自表面至內側表面為止，整體溫度變化之斜度較小之高溫之加熱狀態。 In addition, by blowing air onto the surface of the preform, even if the preform is heated to a higher temperature than before, the whitening (crystallization) of the surface is suppressed. At the same time, compared with the previous one, heat can be immediately transferred to the inside of the preform. Therefore, the temperature difference between the surface and the inner surface becomes smaller. As a result, it is possible to achieve a high-temperature heating state with a small slope of overall temperature change from the surface to the inner surface without causing whitening (crystallization) on the surface of the preform.
因此，如此一來，即使係壁厚較厚之瓶坯，也可整體性高溫地穩定加熱瓶坯，其後之吹氣成型也變容易。 Therefore, even if the preform is thick-walled, the entire preform can be heated stably at high temperature, and subsequent blow molding becomes easier.
又，藉本發明特有之吹風技術，如先前技術所述，可防止瓶坯表面變高溫而產生白化(結晶化)，所以，無須採取慢慢地以不白化程度之溫度加熱瓶坯，滲透熱之對策，所以，可使加熱器為高溫，變得可縮短加熱時間。結果，可縮短加熱器區，所以，可減少加熱裝置之消耗電力。 In addition, the unique blowing technology of the present invention, as described in the previous technology, can prevent the surface of the preform from becoming high and causing whitening (crystallization). Therefore, there is no need to slowly heat the preform at a temperature that does not cause whitening and penetrate the heat. As a countermeasure, the heater can be set to a high temperature and the heating time can be shortened. As a result, the heater zone can be shortened, so the power consumption of the heating device can be reduced.
而且，當依據本發明時，藉謀求寶特瓶製造裝置之省空間化，而產生很大之優點。亦即，當依據先前之寶特瓶製造裝置時，尤其，當使壁厚較厚之瓶坯等做成寶特瓶時，加熱器時間必須較長，所以，伴隨於此，必須較長之加熱站，但是，本發明之情形下，在瓶坯之加熱過程中，可縮短加熱時間，所以，可使加熱‧吹風站較短。 Moreover, according to the present invention, great advantages are produced by achieving space saving of the PET bottle manufacturing device. That is, when using the previous PET bottle manufacturing device, especially when making a PET bottle from a bottle preform with a relatively thick wall thickness, the heater time must be longer, so along with this, the heater time must be longer. Heating station, however, in the case of the present invention, the heating time can be shortened during the heating process of the preform, so the heating and blowing station can be made shorter.
又，當依據本發明之寶特瓶製造裝置時，即使瓶坯之壁厚較厚，也可進行穩定之吹氣成型，而可材料利用率良好地製造寶特瓶。結果，可使種種型式之用於製造寶特瓶之瓶坯，投入到此寶特瓶製造裝置。具體說來，可吹氣成型為飲水機用寶特加侖瓶之壁厚較厚之瓶坯，係當作一例而例舉之。又，對於可吹氣成型為與具有概略一定直徑之一般寶特瓶不同之異形形狀之寶特瓶，亦即，例如三維地模仿受歡迎之動漫人物或有名觀光名勝之建築物之異形形狀之寶特瓶之壁厚較厚之瓶坯，也可利用此寶特瓶製造裝置。 Furthermore, according to the PET bottle manufacturing device of the present invention, even if the wall thickness of the preform is relatively thick, stable blow molding can be performed, and PET bottles can be manufactured with good material utilization. As a result, various types of preforms for producing PET bottles can be put into the PET bottle manufacturing device. Specifically, the preform that can be blown into a bottle with a relatively thick wall for a Gallon bottle for water dispensers is given as an example. Also, for plastic bottles that can be blown into special shapes that are different from ordinary plastic bottles that have a roughly fixed diameter, that is, for example, special shapes that three-dimensionally imitate popular anime characters or buildings at famous tourist attractions. This PET bottle manufacturing device can also be used for preforms with thicker wall thickness.
此外，在本發明之寶特瓶製造裝置之情形下，當希望在受限之空間，設置寶特瓶製造裝置時，其可做成比大型機還要省空間設計之裝置。 In addition, in the case of the PET bottle manufacturing device of the present invention, when it is desired to install the PET bottle manufacturing device in a limited space, the device can be designed to save space compared with a large computer.
亦即，無須如一般量產機般地，為了提高生產速度，而使加熱部 之全長增長到必要以上，結果，機械不會大型化。具體說來，在先前之一般製造裝置之情形下，為了提高生產速度，係提高加熱溫度到比通常還要高之方法中，瓶坯會白化(結晶化)，吹氣膨脹到寶特瓶形狀為止係較難。防止此之加熱溫度，係與通常相比較下，不具有大幅度變化，必須提高瓶坯之加熱部通過速度，而且，為了可以熱自外側滲透到內側，必須成為拉長加熱部全長之裝置，導致機械之大型化。但是，在本發明之情形下，藉吹風裝置，變得可以高溫加熱瓶坯，藉加熱器區被縮短，產生對應省空間設計之特性，亦即，可以比先前還要短之時間，加熱大量之瓶坯，可置入大量生產用之模數較多之模具，而吹氣成型，所以，可以比先前還要短之時間，製造大量之寶特瓶。 That is to say, there is no need to make the heating part to increase the production speed like a general mass production machine. The overall length is increased beyond necessity, and as a result, the machine will not become larger. Specifically, in the case of conventional general manufacturing equipment, in order to increase the production speed, the heating temperature is raised to a higher level than usual, and the preform is whitened (crystallized) and blown to expand into the shape of a plastic bottle. It is more difficult to tie. To prevent this, the heating temperature does not change significantly compared with normal ones. The passing speed of the heating part of the preform must be increased. In addition, in order to allow heat to penetrate from the outside to the inside, a device must be used to extend the entire length of the heating part. Leading to the enlargement of machinery. However, in the case of the present invention, the blower device makes it possible to heat the preform at high temperature, and the heater area is shortened, resulting in a space-saving design feature, that is, it is possible to heat a large amount in a shorter time than before. The bottle preform can be placed into a mold with a large number of modules for mass production and blown into shape. Therefore, a large number of PET bottles can be manufactured in a shorter time than before.
而且，當依據本發明之寶特瓶製造裝置時，係也適合於製造耐熱性寶特瓶。具體說來，係也可解決關於做為必須解決之課題而詳細說明過之寶特瓶一形態之耐熱寶特瓶之問題。亦即，當依據本發明時，係與先前不同，高溫之熱係可自瓶坯外側滲透到內側，所以，可解決因為如先前般地，外側之熱傳遞到內側前，外側之白化係進展，而無法吹氣成型膨脹至寶特瓶形狀為止，或者，無法為了避免瓶坯外側之白化，加熱瓶坯至即將白化之理由，而只能成型耐熱溫度較低之瓶體之問題。結果，在本發明之情形下，在製造耐熱瓶時，無須進行與成為先前問題之常溫瓶製造工序不同之複雜製造工序，可簡略化此工序。 Furthermore, when the PET bottle manufacturing device according to the present invention is used, it is also suitable for manufacturing heat-resistant PET bottles. Specifically, the system can also solve the problem of a heat-resistant PET bottle in the form of a PET bottle that has been explained in detail as a problem that must be solved. That is, according to the present invention, unlike the previous one, high-temperature heat can penetrate from the outside of the preform to the inside. Therefore, it can be solved that the whitening of the outside progresses before the heat from the outside is transferred to the inside as before. , but cannot blow mold and expand to the shape of a plastic bottle, or, in order to avoid whitening on the outside of the bottle, cannot heat the bottle to the point where it is about to whiten, and can only form a bottle with a low heat-resistant temperature. As a result, in the case of the present invention, when manufacturing a heat-resistant bottle, it is not necessary to perform a complicated manufacturing process different from the normal temperature bottle manufacturing process that has been a problem in the past, and this process can be simplified.
接著，補充說明上述本發明之寶特瓶製造裝置之適用對象之廣度。首先，說明也可應用於飲水機等大容量瓶之優點。飲水機(3加侖‧5加侖等)瓶體係大幅拉伸瓶坯以製造之。 Next, the breadth of applicable objects of the above-mentioned PET bottle manufacturing device of the present invention will be supplemented. First, the advantages that can be applied to large-capacity bottles such as water dispensers will be explained. The water dispenser (3-gallon, 5-gallon, etc.) bottle system is greatly stretched to manufacture the preform.
如加侖瓶地，在膨脹大容量瓶時，在製作角部部分時，因為在高溫以熱成型瓶坯，所以，角部部分之凹陷(成為皺巴巴之現象)或白化(結晶化)較多，在先前，很難達成理想之成型條件，但是，當使用本發明之吹風技 術時，可一舉解決這種問題。 For example, in the case of gallon bottles, when a large-capacity bottle is expanded and the corner parts are made, the preform is thermoformed at a high temperature, so the corner parts are more likely to be dented (wrinkled) or whitened (crystallized). , in the past, it was difficult to achieve ideal molding conditions, but when using the blowing technology of the present invention This problem can be solved in one fell swoop.
又，對於延伸倍率較高之寶特瓶(須要較多拉伸瓶坯之寶特瓶)之應用也很有利。在製造複雜形狀的寶特瓶時使用之壁厚瓶坯，係熱滲透至內部須要很花費時間，所以，使用吹風技術，而縮短滲透至瓶坯內部之時間，藉使表面與內面之溫度為一定之高溫瓶坯，可成型品質穩定之寶特瓶。 In addition, it is also beneficial for the application of PET bottles with higher stretch ratios (Plastic bottles that require more stretching of the preform). When manufacturing complex-shaped PET bottles, it takes a long time for heat to penetrate into the thick-walled preforms. Therefore, blowing technology is used to shorten the time for heat to penetrate into the interior of the preform, by increasing the temperature of the surface and inner surfaces. It is a certain high-temperature bottle preform that can be used to form PET bottles with stable quality.
而且，本發明之範圍係不侷限於上述實施形態。亦即，本發明並不侷限於上述實施形態中之瓶坯之材質，例如也可以取代聚對苯二甲酸乙二醇酯所構成之瓶坯，在加熱過程中，使有時會產生結晶化現象之例如聚丙烯(PP)所構成之瓶坯，投入本發明之寶特瓶製造裝置的瓶坯投入部。 Furthermore, the scope of the present invention is not limited to the above-described embodiment. That is, the present invention is not limited to the material of the preform in the above embodiment. For example, the material of the preform may be replaced by polyethylene terephthalate, which may crystallize during the heating process. An example of this phenomenon is that a preform made of polypropylene (PP) is put into the preform input part of the PET bottle manufacturing device of the present invention.
又，本發明之範圍，係並不侷限於關於上述實施形態中之各構成元件所例舉之形狀或個數。例如也可適用於搬運線整體被設於寶特瓶製造裝置之上側，使安裝瓶坯或寶特瓶之模芯，在搬運線上朝下，以既定間隔設置，藉此，一邊懸吊瓶坯或寶特瓶，一邊沿著搬運線移動這些瓶體之形態之寶特瓶製造裝置。而且，在此情形下，有時加熱‧吹風站的加熱空氣排氣部，係成為位於瓶坯的口部之相反側之構造。 Furthermore, the scope of the present invention is not limited to the shapes or numbers of the constituent elements exemplified in the above-mentioned embodiments. For example, it can also be applied to a case where the entire conveying line is installed above the PET bottle manufacturing device, so that the mold cores for mounting the preforms or PET bottles are placed at predetermined intervals facing downward on the conveying line, thereby suspending the preforms while Or PET bottles, a PET bottle manufacturing device that moves the shapes of these bottles along the conveyance line. Furthermore, in this case, the heated air exhaust portion of the heating and blowing station may be configured to be located on the opposite side of the mouth of the preform.
又，在瓶坯吹風部中，未必須要設置吹風導引狹縫，但是，最好藉設置吹風導引狹縫，而可有效率地往瓶坯吹風。 In addition, it is not necessary to provide a blowing guide slit in the preform blowing part. However, it is preferable to provide a blowing guide slit so that the preform can be efficiently blown.
又，在圖1中，瓶坯吹風部500係被設成沿著模芯之搬運方向，與瓶坯加熱部400的加熱器410相同程度之長度，但是，未必須要同等長度，當然，瓶坯吹風部500之長度，如果其作用可充分發揮時，係可適宜變更為短若干。 In addition, in FIG. 1 , the preform blowing part 500 is set to have approximately the same length as the heater 410 of the preform heating part 400 along the conveyance direction of the mold core. However, the preform blowing part 500 does not necessarily need to have the same length. Of course, the bottle The length of the billet blowing part 500 can be appropriately changed to a shorter length if its function can be fully exerted.
又，在加熱‧吹風站中，如果設置瓶坯吹風部時，在加熱‧吹風站與吹氣成型站之間，就未必須要設置中轉吹風部。但是，藉在其間之搬運線附近的一部分或全部，設置中轉吹風部，可更有效地發揮本發明之上述作用。 In addition, if a preform blowing section is installed in the heating and blowing station, it is not necessary to install a transfer blowing section between the heating and blowing station and the blow molding station. However, by providing a relay blowing part in part or all of the vicinity of the conveyance line, the above-mentioned functions of the present invention can be exerted more effectively.
又，為了藉本發明之寶特瓶製造裝置，更有可能大量生產寶特 瓶，也可使吹氣成型部成為一次可吹氣成型複數支寶特瓶之構造。具體說來，係考慮例如在吹氣成型部，直列並排設置複數之模具，在各模具中，同時吹氣成型瓶坯以做成寶特瓶之構造。瓶坯加熱部之部分係比先前之大量生產機器還要短，所以，即使係與先前相比較下，其為省空間設計之製造裝置，也可對應大量生產。 In addition, in order to utilize the PET bottle manufacturing device of the present invention, it is more possible to mass-produce PET bottles. bottles, the blow molding part can also be made into a structure that can blow mold multiple plastic bottles at one time. Specifically, for example, a structure is considered in which a plurality of molds are arranged in line and side by side in the blow molding section, and bottle preforms are simultaneously blow-molded in each mold to produce a PET bottle. The preform heating section is shorter than that of previous mass production machines, so even though it is a space-saving manufacturing device designed to be able to cope with mass production compared to previous machines.
而且，當依據本發明之寶特瓶製造裝置時，可取代上述聚對苯二甲酸乙二酯所構成之瓶坯，使在加熱過程中，有時產生結晶化現象之瓶坯，投入瓶坯投入部。具體說來，例如藉使由聚丙烯(PP)等之熱可塑性樹脂所構成之瓶坯，投入到瓶坯投入部，可藉小型之寶特瓶製造裝置，大量生產由聚丙烯所構成之可當作飲料用容器或食品用容器利用之寶特瓶。 Moreover, when the PET bottle manufacturing device according to the present invention is used, the bottle preforms composed of the above-mentioned polyethylene terephthalate can be replaced, and the bottle preforms that sometimes crystallize during the heating process can be put into the bottle preforms. Investment Department. Specifically, for example, by inserting a preform made of a thermoplastic resin such as polypropylene (PP) into the preform input part, a small PET bottle manufacturing device can be used to mass-produce preforms made of polypropylene. Plastic bottles used as beverage containers or food containers.
最後，說明可發揮本發明之作用之第2實施形態。圖5係概略表示本發明第2實施形態之寶特瓶製造裝置之構造之俯視圖。第2實施形態之寶特瓶製造裝置，基本上，係具有與第1實施形態寶特瓶製造裝置等價之構造，所以，僅說明做為兩者不同構造之第2實施形態之特徵性部分，針對其他之構造，係在圖面賦予相同之編號，詳細說明則予以省略。 Finally, a second embodiment in which the effects of the present invention can be exerted will be described. FIG. 5 is a plan view schematically showing the structure of the PET bottle manufacturing device according to the second embodiment of the present invention. The PET bottle manufacturing device of the second embodiment basically has an equivalent structure to the PET bottle manufacturing device of the first embodiment. Therefore, only the characteristic parts of the second embodiment, which are different structures between the two, will be described. , other structures are given the same numbers in the drawings, and detailed descriptions are omitted.
而且，在圖5中，雖然為了使發明容易理解與簡略化圖示，而描繪較少數量之模芯100，但是，實際上，因為寶特瓶製造裝置2之大小而不同，然而，數量比圖示數量還要多之模芯100，係彼此以較短間隔，被搬運線200搬運。 Moreover, in FIG. 5 , although a smaller number of mold cores 100 are depicted in order to make the invention easier to understand and simplify the illustration, in fact, the size of the plastic bottle manufacturing device 2 is different. However, the number is smaller than that of the mold cores 100 . As shown in the figure, the mold cores 100, which are even larger in number, are conveyed by the conveying line 200 at short intervals from each other.
在第1實施形態之寶特瓶製造裝置1中，瓶坯吹風部500係被設成在瓶坯20被瓶坯加熱部400加熱之過程中，吹風到瓶坯20。而且，中轉吹風部900係做為其輔助性之吹風裝置，被設於自加熱瓶坯20開始，至進入吹氣成型部600為止之間之中轉區之既定位置。而且，在此說明此中轉吹風部900只不過係當作輔助性之吹風之角色者，如果在相向於瓶坯加熱部400之位置，設有主要之瓶坯 吹風部500時，輔助性之中轉吹風部900就未必需要。 In the plastic bottle manufacturing apparatus 1 of the first embodiment, the preform blowing unit 500 is configured to blow air to the preform 20 while the preform 20 is being heated by the preform heating unit 400 . Moreover, the transfer blowing part 900 serves as an auxiliary blowing device and is provided at a predetermined position in the transfer zone between the time when the preform 20 is heated and when it enters the blow molding part 600 . Moreover, it is explained here that the intermediate blowing part 900 is only used as an auxiliary blowing role. If there is a main preform at a position opposite to the preform heating part 400, When the blower part 500 is used, the auxiliary relay blower part 900 is not necessarily necessary.
另外，在第2實施形態之寶特瓶製造裝置2之情形下，如圖5所示，係在瓶坯加熱部400，取代第1實施形態之瓶坯吹風部500，設有加熱促進用反射板550，於設有發揮第1實施形態中之輔助性角色之中轉吹風部900之位置，係設有當作本實施形態中之主要吹風部之中轉區吹風部950。 In addition, in the case of the plastic bottle manufacturing apparatus 2 of the second embodiment, as shown in FIG. 5 , the preform heating unit 400 is provided with a heating-promoting reflector instead of the preform blowing unit 500 of the first embodiment. The plate 550 is provided with the relay zone blowing part 950, which is the main blowing part in this embodiment, at the position where the relay blowing part 900, which plays an auxiliary role in the first embodiment, is provided.
加熱促進用反射板550係中介著搬運線200，被設於加熱用之加熱器410之相反側，藉反射加熱器410之熱，發揮效率良好地施加熱到瓶坯20之角色。而且，關於瓶坯加熱部400的加熱促進用反射板550，係在第2實施形態中，暫時設置者，在實施本發明時，係對應瓶坯20之加熱狀況，未必需要。 The heating-promoting reflective plate 550 is disposed on the opposite side of the heating heater 410 through the conveyance line 200, and plays the role of efficiently applying heat to the preform 20 by reflecting the heat of the heater 410. Furthermore, the heating-promoting reflection plate 550 of the preform heating unit 400 is temporarily installed in the second embodiment. When implementing the present invention, it is adapted to the heating conditions of the preform 20 and is not necessarily necessary.
關於第2實施形態中之瓶坯加熱部400之構造，係取代瓶坯吹風部500，而設置加熱促進用反射板550，此外，係與第1實施形態同樣，所以，省略共通之各構成元件之說明。 Regarding the structure of the preform heating unit 400 in the second embodiment, the heating promotion reflection plate 550 is provided instead of the preform blowing unit 500. In addition, the structure is the same as that in the first embodiment, so the common components are omitted. description.
中轉區吹風部950係與第1實施形態之中轉吹風部900，在基本構造為共通，但是，可低成本且確實地採取在通過瓶坯加熱部400時，於不產生白化(結晶化)現象之此中轉區中，產生急速白化(結晶化)現象時之對策。而且，在圖5中，為了便於說明及容易理解發明，係僅描繪一個中轉區吹風部950，但是，因為機種而有時成為吹風到數個瓶坯20之構造，所以，實際上，本發明並不侷限於如圖5之模芯100之配置形態。 The transfer area blowing unit 950 is the same as the transfer area blowing unit 900 in the first embodiment, and has the same basic structure. However, it can be used at low cost and reliably to prevent whitening (crystallization) from occurring when the preform passes through the heating unit 400. ) phenomenon occurs in this transit zone, countermeasures when rapid whitening (crystallization) occurs. In addition, in FIG. 5 , for convenience of explanation and easy understanding of the invention, only one transfer area blowing unit 950 is depicted. However, depending on the model of the machine, it may have a structure that blows air to several preforms 20 . Therefore, in fact, this The invention is not limited to the configuration of the mold core 100 as shown in FIG. 5 .
如此一來，在瓶坯加熱部400不設置瓶坯吹風部500，自以瓶坯加熱部400加熱瓶坯20開始，至進入吹氣成型部600為止之間之既定位置，設有中轉區吹風部950，也可充分發揮本發明特有之作用效果。關於此點，係在以下做說明。 In this way, the preform blowing part 500 is not provided in the preform heating part 400, and a transition area is provided at a predetermined position between the preform heating part 400 heating the preform 20 and the time it enters the blow molding part 600. The blowing part 950 can also fully exert the unique effects of the present invention. This point will be explained below.
僅在做為第2實施形態特有之構造之中轉區之吹風部為何有效，我認為係如下所示。 I think why it is effective only in the blowing part of the transfer area, which is a structure unique to the second embodiment, is as follows.
(1)因為在瓶坯之加熱區之加熱中，雖然不產生白化(結晶化)，但是，在中轉區有時會產生白化(結晶化)。具體說來，因為自瓶坯加熱部送出後，很多時候會立即白化(結晶化)。 (1) Although whitening (crystallization) does not occur during the heating of the preform in the heating zone, whitening (crystallization) sometimes occurs in the transfer zone. Specifically, this is because the preforms often whiten (crystallize) immediately after being sent out from the heating section.
(2)發明者確認到：瓶坯被瓶坯加熱部加熱，愈往加熱部後半則熱悶在瓶坯中，所以，加熱部後半及自加熱部送出之附近處所係成為高溫，而有白化(結晶化)之現象。因此，為了防止這種現象，藉僅在中轉區吹風而防止白化(結晶化)之方法，係在現狀中，非常有效之手段。 (2) The inventor confirmed that the preform is heated by the preform heating part, and the heat is trapped in the preform toward the rear half of the heating part. Therefore, the rear half of the heating part and the vicinity of the place sent out from the heating part become high-temperature, causing whitening. (crystallization) phenomenon. Therefore, in order to prevent this phenomenon, the method of preventing whitening (crystallization) by blowing air only in the transfer area is a very effective means under the current situation.
(3)在成型瓶坯為寶特瓶時，為了如設計般地進行理想成型，期望在瓶坯的內外表面之溫度沒有差異(為一定)。亦即，最好自瓶坯的外周面至到達內周面為止之溫度斜度(往溫度降低者之傾斜)係完全沒有，或者，實際上，考慮到影響此之諸因素，係愈小愈好。 (3) When the molded bottle preform is a plastic bottle, in order to achieve ideal molding as designed, it is expected that there will be no difference in temperature between the inner and outer surfaces of the bottle preform (to be constant). That is to say, it is preferable that the temperature slope (the slope toward the point where the temperature decreases) from the outer peripheral surface of the preform to the inner peripheral surface is completely nonexistent, or, in fact, considering various factors that affect this, the smaller the slope, the better. good.
因此，當在瓶坯加熱部未設有瓶坯吹風部時，當以瓶坯加熱部加熱瓶坯時，熱單向自瓶坯的外側往內側傳遞，造成在自瓶坯加熱部送出後之時點，外側與內側之溫度有時變得不為一定。其係因為瓶坯之壁厚愈厚，則傾向變得顯著。 Therefore, when there is no preform blowing part in the preform heating part, when the preform is heated by the preform heating part, the heat is transmitted from the outside to the inside of the preform in one direction, causing the preform to be heated after being sent out from the preform heating part. At this point, the temperatures on the outside and inside sometimes become inconsistent. This is because the thicker the wall thickness of the preform, the more obvious the tendency becomes.
因此，如此一來，使瓶坯外側之溫度成為比內側之溫度還要高之狀態，在瓶坯自瓶坯加熱部送出之加熱過程後不久之中轉區中，自外側吹風以使內外表面之溫度接近，藉此，因為與在第1實施形態中，在瓶坯加熱部，藉瓶坯吹風部吹風到瓶坯之情形相同之理由，可充分發揮本發明之作用。亦即，可防止如在瓶坯加熱部或其後之中轉區中，不具有吹風部之先前寶特瓶製造裝置般地，產生白化(結晶化)，或者，因為內外表面之溫度差不為一定，而產生瓶體成型不良之情事。 Therefore, in this way, the temperature on the outside of the preform is made higher than the temperature on the inside. In the transfer zone shortly after the preform is sent out from the preform heating part, air is blown from the outside to make the inner and outer surfaces The temperature is close to that of the preform heating unit. Therefore, the effect of the present invention can be fully exerted for the same reason as the case where the preform blowing unit blows air to the preform in the preform heating unit. That is, it is possible to prevent whitening (crystallization) from occurring in the preform heating section or the subsequent transfer zone, as in the previous PET bottle manufacturing apparatus without a blowing section, or because the temperature difference between the inner and outer surfaces is not the same. For certain reasons, the bottle body may be poorly formed.
因為以上之理由，如第1實施形態所示，在瓶坯加熱部400不設置瓶坯吹風部500，取代此而在中轉區設置中轉區吹風部950，也可充分發揮本發 明之效果。 For the above reasons, as shown in the first embodiment, the present invention can be fully utilized even if the preform blowing part 500 is not provided in the preform heating part 400 and the transfer zone blowing part 950 is provided in the transfer zone instead. The effect of light.
中轉區吹風部之具體性構造，也可以係在圖5代表性表示之中轉區吹風部950之設置位置，實際上，使該設置位置之開始處所設於瓶坯加熱部400之出口側，自此開始處所沿著搬運線200往吹氣成型部600，設置用於防止上述瓶坯白化(結晶化)之充分長度之中轉區吹風部950。在此情形下之長度，係可考慮藉中轉區吹風部950吹風之量或風速等，經過模擬或實地驗證等以決定之。 The specific structure of the transfer zone blowing part can also be based on the installation position of the transfer zone blowing part 950 which is representatively shown in Figure 5. In fact, the starting position of the installation position is set on the outlet side of the preform heating part 400. , from this point along the conveyance line 200 to the blow molding part 600, a transfer zone blowing part 950 of sufficient length to prevent the whitening (crystallization) of the preform is provided. The length in this case can be determined by taking into account the amount or wind speed of the air blowing part 950 in the transfer area, etc., and through simulation or field verification.
當依據本發明第2實施形態之寶特瓶製造裝置時，係可在既存之寶特瓶製造裝置，亦即，於瓶坯加熱裝置未設有瓶坯吹風部之製造裝置，追加安裝中轉區吹風部。藉此，藉提高先前型之瓶坯加熱裝置的加熱器之溫度，同時提高模芯的加熱裝置內之搬運線上之移動速度，藉此，全部瓶坯可以比先前還要短之時間，通過加熱工序。 When using the PET bottle manufacturing device according to the second embodiment of the present invention, a relay can be additionally installed in the existing PET bottle manufacturing device, that is, a manufacturing device that does not have a preform blowing part in the preform heating device. District air conditioning department. By this, by raising the temperature of the heater of the previous type of preform heating device and simultaneously increasing the moving speed of the conveying line in the heating device of the mold core, all the preforms can be heated through heating in a shorter time than before. process.
亦即，在這種狀態中，在先前，自瓶坯加熱裝置送出後不久，有瓶坯產生白化(結晶化)現象之虞，或者，瓶坯之外側與內側之熱分佈之溫度斜度產生不佳之情形，而對其後之吹氣成型部中之吹氣成型產生不良影響，但是，藉在既存之寶特瓶製造裝置，追加安裝如本發明第2實施形態之中轉區吹風部，瓶坯在自瓶坯加熱裝置送出後之中轉區中，可藉中轉區吹風部，吹風到瓶坯，而可避免因為如先前之白化(結晶化)，而產生嚴重之問題。 That is, in this state, there is a risk that the preform may whiten (crystallize) shortly after being sent out from the preform heating device, or the temperature gradient of the heat distribution between the outside and the inside of the preform may occur. If the situation is not good, it will have a negative impact on the blow molding in the subsequent blow molding section. However, by adding a transfer zone blowing section like the second embodiment of the present invention to the existing PET bottle manufacturing device, When the preforms are sent out from the preform heating device in the transfer area, the air blowing part of the transfer area can be used to blow air to the preforms, thereby avoiding serious problems caused by previous whitening (crystallization).
如此一來，當依據本發明之第2實施形態時，在既存之寶特瓶製造裝置追加安裝瓶坯吹風部，藉此，做為進一步之效果，可縮短該製造裝置的瓶坯加熱裝置中之加熱過程之時間。藉此，可共有在決定之時間內，可效率良好地製造更多寶特瓶之特別優點。 In this way, according to the second embodiment of the present invention, a preform blowing unit is additionally installed in the existing PET bottle manufacturing device. As a further effect, the preform heating device of the manufacturing device can be shortened. the time of the heating process. In this way, we can share the special advantage of being able to efficiently produce more PET bottles within a determined time.
1:寶特瓶製造裝置 1:Pote bottle manufacturing device
11:基座 11: base
20:瓶坯 20: Bottle preform
30:寶特瓶 30:Pote bottle
100:模芯 100:Mold core
120:口部組裝部 120:Oral assembly department
200:搬運線 200:Conveying line
210:瓶坯搬運線區間 210: Preform handling line section
220:寶特瓶搬運線區間 220: PET bottle handling line section
230:空模芯搬運線區間 230: Empty core transfer line section
250:旋轉裝置 250: Rotary device
300:瓶坯投入部 300: Preform input department
400:瓶坯加熱部 400: Preform heating part
410:加熱器 410:Heater
411~416:加熱器 411~416: heater
420:加熱部內吹風部 420: Blowing part inside the heating part
500:瓶坯吹風部 500:Preform blowing part
510:鼓風機 510: Blower
520:吹風狹縫導引器 520: Blowing slit guide
600:吹氣成型部 600: Blowing molding department
610:(吹氣成型用)模具 610: (for blow molding) mold
611:半部(模具) 611: Half (mold)
612:半部(模具) 612: Half (mold)
700:寶特瓶取出部 700:Pote bottle taking out department
900:中轉吹風部 900:Transit hair drying department
Claims (7)
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| JP2018-170664 | 2018-09-12 | ||
| JP2018170664A JP7176729B2 (en) | 2018-09-12 | 2018-09-12 | PET bottle manufacturing equipment |
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| TW202015882A TW202015882A (en) | 2020-05-01 |
| TWI833801B true TWI833801B (en) | 2024-03-01 |
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| JP (1) | JP7176729B2 (en) |
| CN (1) | CN112672872A (en) |
| TW (1) | TWI833801B (en) |
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| TWI221113B (en) * | 2001-06-29 | 2004-09-21 | Yoshino Kogyosho Co Ltd | Method and device for heating preform |
| TW200540008A (en) * | 2004-03-03 | 2005-12-16 | Constantinos Sideris | Moulding of plastics articles |
| CN1867443A (en) * | 2003-10-17 | 2006-11-22 | 东洋制罐株式会社 | Method and device for manufacturing container by compression molding and stretch blow molding |
| WO2011066885A2 (en) * | 2009-12-04 | 2011-06-09 | Krones Ag | Furnace for conditioning preforms |
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| US20180194041A1 (en) * | 2017-01-06 | 2018-07-12 | Friendship Products Llc | Molding systems and related methods |
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| JP3777204B2 (en) * | 1994-11-11 | 2006-05-24 | 日精エー・エス・ビー機械株式会社 | Heat-resistant container molding apparatus and molding method |
| JP3899787B2 (en) * | 2000-07-27 | 2007-03-28 | 東洋製罐株式会社 | Polypropylene multilayer blow bottle with excellent gloss and impact resistance |
| JP6180537B2 (en) * | 2013-10-07 | 2017-08-16 | 日精エー・エス・ビー機械株式会社 | Container with handle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI221113B (en) * | 2001-06-29 | 2004-09-21 | Yoshino Kogyosho Co Ltd | Method and device for heating preform |
| CN1867443A (en) * | 2003-10-17 | 2006-11-22 | 东洋制罐株式会社 | Method and device for manufacturing container by compression molding and stretch blow molding |
| TW200540008A (en) * | 2004-03-03 | 2005-12-16 | Constantinos Sideris | Moulding of plastics articles |
| WO2011066885A2 (en) * | 2009-12-04 | 2011-06-09 | Krones Ag | Furnace for conditioning preforms |
| CN102267228A (en) * | 2010-06-02 | 2011-12-07 | 西德尔合作公司 | Oven for the thermal conditioning of preforms and control method of an air cooling device fitted to such an oven |
| US20180194041A1 (en) * | 2017-01-06 | 2018-07-12 | Friendship Products Llc | Molding systems and related methods |
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| JP2020040335A (en) | 2020-03-19 |
| TW202015882A (en) | 2020-05-01 |
| CN112672872A (en) | 2021-04-16 |
| JP7176729B2 (en) | 2022-11-22 |
| WO2020054787A1 (en) | 2020-03-19 |
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