M330182 八、新型說明： 【新型所屬之技術領域】 本創作係與製造塑膠容器之設備有關，特別是有關於 一種能提高生產效能及節省能源的吹塑成形裝置。 ' 【先前技術】 按，製造保特瓶（PET)等塑膠容器之方式通常係將人 成樹脂製成之瓶胚輸送，而以加熱器將瓶胚加熱至吹塑成 形所需之溫度，而後輸送至吹塑成形機構中，以高壓氣^ 將瓶胚於模穴中吹塑成形，待吹塑成形後之容器冷卻至二 定溫度後再送出。而以吹塑方式製造此類塑膠容器之設備 通稱為吹瓶機或吹塑成形裝置。 請參閱中華民國公告第365573號之「吹塑成形裝置 及成形方法」，該吹塑成形裝置具有一個供應預塑胚之預 塑胚供應部；一個將預塑胚加熱至吹塑成形溫度之預塑胚 加熱部；一個將加熱後之預塑胚吹塑成形為製品形狀的吹 塑成形部；一個取出經吹塑成形為製品之製品取出部，以 及一個將預塑胚循環運送至上述各部之預塑胚運送部。 而該預塑胚運送部具有承載預塑胚之複數運送構 件，各運送構件均具有鏈輪以由循環繞設之運送鏈驅動運 行’來運送預塑胚至前述各部。 且該吹塑成形裝置為了要提升對預塑胚的加熱效 率，因此在長矩形之預塑胚運送部的一個短邊設置吹塑成 形部，而在其它三邊分別設置預塑胚加熱部，以延長對預 塑胚的加熱時間來提升加熱效率。 5 M330182 前述之吹塑成形裝置係於民國八十四年提出申請，時 至今日，這十多年來相關之材料及設備技術均不斷進步， 至使該吹塑成形裝置產生了一些問題。 首先，由於材料及吹塑技術的進步，目前預塑胚在吹 塑成形部中吹塑成形為成品所需的時間日益縮短，也就是 說預塑胚運送部必需以較過去更快的時間來運送預塑 胚，這也使得預塑胚被運送行經加熱部的時間相對地縮 短。 前述的加熱部是以加熱管透過自然的熱傳導來對預 塑胚進行加熱，當預塑胚被運送行經加熱部的時間縮短 時，該加熱部對預塑胚的加熱效果便可能造成加熱溫度不 足的問題。如果直接提高加熱管的功率雖然可以提高對預 塑胚的加熱溫度，但是在狹小的加熱部内卻也容易造成預 塑胚局部溫度過高的問題發生，同時也會造成能源浪費的 問題，因此前述由加熱管透過自然熱傳導對預塑胚加熱的 技術便有再加以改進之必要。 另外，由於前述的預塑胚運送部是以繞經整個運送 路徑的鏈條來同步驅動所有承載預塑胚的運送構件，但是 各個運送構件均是由金屬材料製成，因此預塑胚運送部的 整體重量相當地重，再加上預塑胚運送部是以間歇性的形 式來運送所有的預塑胚，所以要加快對預塑胚的運送速度 便顯得較不容易，或許改用更大功率的驅動源可以提升運 送速度，但是相對地也會增加能源的耗損，在這能源日漸 短缺的時代，前述之預塑胚運送部結構亦有再加以改進之 必要。 6 M330182 【新型内容】 本創作之主要目的，在於解決上述的問題而提供一種 吹塑裝置，藉由在各加熱機構設置強制對流機構，以提高 加熱部内之熱對流，從而可達到兼顧提高加熱效能及節能 效果之雙重功效。 本創作之次一目的係在於，運送部的各個滑塊載具係 以非金屬材質製成，以有效降低整體重量，而能兼具快速 移動及節能之功效。 為達前述之目的，本創作之吹塑成形裝置係包括：一 個載送瓶胚行進的運送單元；一個將瓶胚送入運送單元的 瓶胚供應部；一個將瓶胚加熱到吹塑成形所需溫度的加熱 單元，其係沿著運送單元之運送路徑設置多組加熱機構； 一個將被加熱後之瓶胚吹塑成形的成形部；一個將吹塑完 成之成品取出的取出部，且對應各組加熱機構分別設置一 強制對流機構，使各加熱機構内產生強制熱對流來對瓶胚 加熱。 由於各強制對流機構可使各加熱機構内部產生強制 熱對流的作用，因此當瓶胚被運送經過各加熱機構時能更 快速地、更有效地被加熱，而可提高其加熱效能，並同時 達到節能的效果。 再者，該運送單元中用以載送瓶胚的各滑塊載具係為 塑膠或電木等非金屬材料製成，而僅於各滑塊載具相互接 觸部份包覆金屬片，因此能大幅降低各滑塊載具之重量， 使該運送單元能達到兼具快速移動及節能之雙重功效。 7 M330182 本創作之上述及其他目的與優點，不難從下述所選用 實施例之詳細說明與附圖中，獲得深入了解。 當然，本創作在某些另件上，或另件之安排上容許有 所不同，但所選用之實施例，則於本說明書中，予以詳細 說明，並於附圖中展示其構造。 【實施方式】 請參閱第1圖至第4圖，其係本創作所選用較佳實施 例之結構圖示。 首先請參閱第1圖，其係本創作之俯視圖。本創作之 吹塑成形裝置係用以將合成樹脂製成的瓶胚加熱並吹塑 成形為塑膠容器成品，該吹塑成形裝置係包括有一運送單 元1、一瓶胚供應部2、一加熱單元3、一成形部4、一取 出部5以及數個強制對流機構6。 該運送單元1具有一略呈長方形之運送路徑11，並 於該運送路徑11上設置多數滑塊載具12以載承載瓶胚， 並於各滑塊載具12間設置調整塊13用以調整瓶胚間距， 該運送單元1具有一個以氣壓為動力的動力壓缸（圖中未 示）來間歇驅動各滑塊載具12及調整塊13沿該運送路徑 11運送瓶胚。 該瓶胚供應部2係將瓶胚依序送入該運送單元1。 該加熱單元3係沿該運送路徑11設置多組加熱機構 30，用以將瓶胚逐漸加熱到吹塑成形所需溫度。並且在各 加熱機構3 0上均設置一強制對流機構6 ’使各加熱機構 30内產生強制熱對流來對瓶胚加熱。於本實施例中該加 8 M330182 熱單元3係於該運送路徑11的三個邊分別設置加熱機構 30，除此之外，亦可因應所需而只於該運送路徑11的二 個邊設置加熱機構。 該成形部4係設置於沿該運送路徑11位於加熱單元 3之後的位置，該成形部4可供一組模具41設置，該組 模具41内可設置多個成形用的模穴（圖中未示），使被加 熱後之瓶胚在模穴中被吹塑成形為成品。 該取出部5係設置於該運送路徑11位於該成形部4 之後的位置，以將吹塑完成之成品取出。 再請配合參閱第2圖及第3圖，第2圖是本創作加熱 機構與強制對流機構之俯視圖，第3圖是本創作加熱構與 強制對流機構之侧視圖。該加熱機構30係於該運送路徑 11的兩側分別設置一第一加熱器31與一第二加熱器32, 於本實施例中該第一加熱器31對應瓶胚7設有多數橫置 之加熱管33，而該第二加熱器32則設置一反射板34，如 此便能藉由第一加熱器31的各加熱管33發出熱量對瓶胚 7直接加熱，而第二加熱器32之反射板34則可將第一加 熱器31的熱能反射來對瓶胚7加熱。 該強制對流機構6具有一集風罩61，該集風罩61係 罩蓋於該加熱機構30上方，且該集風罩61係分別由一管 路62連通至一抽風機63，該強制對流機構6另於該加熱 機構30的一側面（於本例中係在該第一加熱器之外側面） 設有二風扇64，而可由風扇64與抽風機63使該加熱機 構30產生強制熱對流作用。 如第3圖所示，該強制對流機構6之各風扇64會產 9 M330182 生氣流，促進該第一加熱器31之加熱管33所發出的熱量 強制對流至該瓶胚7以提高熱傳效果，當熱氣流逐漸上昇 至該集風罩61後，則由該抽風機63將熱氣流抽出，以避 免該加熱機構30内部發生溫度過高的問題。 在本實施例中，由於該強制對流機構6之作用，使得 該加熱機構30只需在第一加熱器31設置加熱管33，而 於第二加熱器32設置反射板34即可達到所需之加熱條 件。當然，本創作之加熱機構除了前述之設置方式之外， 亦可在第一加熱器與第二加熱器都設置加熱管，甚至是在 第一加熱器與第二加熱器上設置不同形態的加熱管。本創 作之加熱機構的設置型式可依實際的加熱需求來作變 化，並不只侷限於單一型式。 另外，該強制對流機構可於排風口 65增設一排風管 (圖中未示），並藉排風管將抽風機所抽出之熱風循環迴送 至加熱機構内部，如此更能提高節能的效果。 再請參閱第4圖，其係本創作之滑塊載具12與調整 塊13配合之俯視圖。如前所述，各調整塊13係被設置於 相鄰的兩個滑塊載具12之間，用以調整兩塊滑塊載具12 之間隔。 而本創作為了能讓滑塊載具12與調整塊13被快速移 動，因此將該滑塊載具12與該調整塊13以塑膠材料或電 木等非金屬材料製成，以大幅降低滑塊載具12與調整塊 13的整體重量，讓滑塊載具12與調整塊13能更容易被 快速地移動。 但是各滑塊載具12與各調整塊13之間必需相互接觸 M330182 以相互推動，因此各滑 接觸的部份必需具有相^^與各調整塊13之間相互 木等非金屬材料的耐磨性明耐磨程度，蚊轉材料或電 特別在各調整塊13與各顯低於金屬材料’因此本創作 一金屬片131、121。 π鬼载具12相互接觸部份設置有 性，進而能使該運送單2即可兼具輕量化與耐磨兩種特 功效。 $到兼具快速移動及節能之雙重M330182 VIII. New description: [New technical field] This creation is related to the equipment for manufacturing plastic containers, especially for a blow molding device that can improve production efficiency and save energy. [Prior Art] According to the method of manufacturing plastic containers such as PET bottles, the preforms made of resin are usually conveyed, and the preforms are heated by a heater to the temperature required for blow molding, and then It is conveyed to the blow molding mechanism, and the preform is blow-molded in a cavity with a high pressure gas, and the container after the blow molding is cooled to a constant temperature and then sent out. Equipment that manufactures such plastic containers by blow molding is known as a blow molding machine or a blow molding device. Please refer to the "Blow Molding Apparatus and Forming Method" of the Republic of China Bulletin No. 365573, which has a pre-plasticized embryo supply section for supplying pre-plasticized embryos; and a preheating of the pre-plasticized preform to the blow molding temperature a plastic preform heating portion; a blow molding portion that blow-molds the heated pre-molded blank into a product shape; a product take-out portion that is blow molded into a product, and a pre-molded embryo is circulated to the respective portions Pre-mold embryo transport. The pre-mold delivery portion has a plurality of transport members carrying pre-plasticized preforms, each transport member having a sprocket for transporting the pre-molded embryos to the respective portions by a cyclically driven transport chain drive. In order to increase the heating efficiency of the preformed preform, the blow molding device is provided with a blow molding portion on one short side of the long rectangular preform transfer portion, and a pre-plastic preform heating portion on the other three sides. The heating efficiency is increased by extending the heating time of the preformed embryo. 5 M330182 The aforementioned blow molding device was applied in the Republic of China in 1984. The materials and equipment technology related to the past ten years have been continuously improved, causing some problems in the blow molding device. First of all, due to the advancement of materials and blow molding technology, the time required for the blow molding of preformed preforms into finished products in the blow molding section is increasingly shortened, that is to say, the preformed preform delivery section must be faster than in the past. The pre-molded embryos are transported, which also causes the pre-molded embryos to be relatively shortened in time to be transported through the heating section. The heating unit heats the pre-mold by the natural heat conduction of the heating tube. When the time for the pre-plasticized embryo to be transported through the heating portion is shortened, the heating effect of the heating portion on the pre-mold may cause insufficient heating temperature. The problem. If the heating power of the heating tube is directly increased, the heating temperature of the pre-plasticized embryo can be increased, but in the narrow heating portion, the problem of excessive local temperature of the pre-plasticized preform is also easily caused, and the energy waste is also caused. The technique of heating the pre-plasticized preform through the natural heat transfer by the heating tube is necessary to be further improved. In addition, since the aforementioned pre-mold conveying portion synchronously drives all the conveying members carrying the pre-plasticized preforms by the chain passing through the entire conveying path, each of the conveying members is made of a metal material, and thus the preforming of the embryo conveying portion The overall weight is quite heavy, and the pre-plasticized embryo transport part transports all the pre-plasticized embryos in an intermittent form, so it is not easy to speed up the delivery of the pre-plasticized embryos, perhaps using more power. The driving source can increase the speed of transportation, but it will also increase the energy consumption. In the era of increasing energy shortage, the structure of the pre-plastic preform transport part is also necessary to be improved. 6 M330182 [New content] The main purpose of this creation is to solve the above problems and provide a blow molding device. By providing a forced convection mechanism in each heating mechanism to improve the heat convection in the heating portion, the heating efficiency can be improved. And the dual effect of energy saving effect. The second purpose of this creation is that each slider carrier of the transport unit is made of a non-metallic material to effectively reduce the overall weight, and can have both rapid movement and energy saving effects. For the purposes of the foregoing, the blow molding apparatus of the present invention comprises: a transport unit for carrying a preform; a preform supply portion for feeding the preform to the transport unit; and a preform for heating the preform to the blow molding station a heating unit requiring temperature, which is provided with a plurality of sets of heating mechanisms along a transport path of the transport unit; a forming portion for blow molding the heated preform; and a take-out portion for taking out the blow molded finished product, and corresponding thereto Each group of heating mechanisms is respectively provided with a forced convection mechanism to generate forced heat convection in each heating mechanism to heat the preform. Since each forced convection mechanism can cause forced heat convection inside each heating mechanism, when the preform is transported through each heating mechanism, it can be heated more quickly and efficiently, and the heating efficiency can be improved while achieving The effect of energy saving. Furthermore, each of the slider carriers for carrying the preforms in the transport unit is made of a non-metallic material such as plastic or bakelite, and only the portions of the slider carriers are in contact with each other to cover the metal sheets. It can greatly reduce the weight of each slider carrier, so that the transport unit can achieve the dual functions of fast moving and energy saving. 7 M330182 The above and other objects and advantages of the present invention will be readily understood from the detailed description and drawings of the selected embodiments described below. Of course, the present invention may be different in some of the parts, or the arrangement of the parts, but the selected embodiments are described in detail in the present specification, and the construction thereof is shown in the drawings. [Embodiment] Please refer to Figs. 1 to 4, which are structural diagrams of preferred embodiments selected for the present invention. First, please refer to Figure 1, which is a top view of the creation. The blow molding device of the present invention is for heating and blow molding a preform made of synthetic resin into a finished plastic container, the blow molding device comprising a transport unit 1, a preform supply unit 2, and a heating unit 3. A forming portion 4, a take-out portion 5 and a plurality of forced convection mechanisms 6. The transport unit 1 has a slightly rectangular transport path 11 , and a plurality of slider carriers 12 are disposed on the transport path 11 to carry the preforms, and an adjustment block 13 is disposed between the slider carriers 12 for adjustment. The preform spacing, the transport unit 1 has a pneumatically powered power cylinder (not shown) for intermittently driving each of the slider carriers 12 and the adjustment block 13 to transport the preform along the transport path 11. The preform supply unit 2 sequentially feeds the preforms into the transport unit 1. The heating unit 3 is provided with a plurality of sets of heating mechanisms 30 along the transport path 11 for gradually heating the preforms to the temperature required for blow molding. Further, a forced convection mechanism 6' is provided in each of the heating mechanisms 30 to cause forced heat convection in each of the heating mechanisms 30 to heat the preform. In the present embodiment, the 8 M330182 thermal unit 3 is provided with heating mechanisms 30 on three sides of the transport path 11, and in addition, it may be disposed only on two sides of the transport path 11 as needed. Heating mechanism. The forming portion 4 is disposed at a position after the heating unit 3 along the transport path 11. The forming portion 4 is provided for a set of molds 41, and a plurality of molding cavities can be disposed in the set of molds 41 (not shown) Show), the heated preform is blow molded into a finished product in a cavity. The take-out portion 5 is disposed at a position behind the forming portion 4 of the transport path 11 to take out the blow molded finished product. Please refer to Fig. 2 and Fig. 3 together. Fig. 2 is a plan view of the creation heating mechanism and the forced convection mechanism, and Fig. 3 is a side view of the creation heating mechanism and the forced convection mechanism. The heating mechanism 30 is provided with a first heater 31 and a second heater 32 respectively on the two sides of the transport path 11. In the embodiment, the first heater 31 is provided with a plurality of transversely corresponding preforms 7 The tube 33 is heated, and the second heater 32 is provided with a reflecting plate 34, so that the preform 7 can be directly heated by the heat pipes 33 of the first heater 31, and the second heater 32 is reflected. The plate 34 then reflects the thermal energy of the first heater 31 to heat the preform 7. The forced convection mechanism 6 has a collecting hood 61. The hood 61 is covered by the heating mechanism 30, and the hood 61 is respectively connected by a pipeline 62 to a blower 63. The forced convection is performed. The mechanism 6 is further provided with a fan 64 on one side of the heating mechanism 30 (in this embodiment, outside the first heater), and the heating mechanism 30 can be forced to convect by the fan 64 and the exhaust fan 63. effect. As shown in Fig. 3, each of the fans 64 of the forced convection mechanism 6 generates 9 M330182 of raw air, which promotes forced convection of heat generated by the heating pipe 33 of the first heater 31 to the preform 7 to improve heat transfer. When the hot airflow gradually rises to the windshield 61, the hot airflow is extracted by the exhaust fan 63 to avoid the problem of excessive temperature inside the heating mechanism 30. In the present embodiment, due to the action of the forced convection mechanism 6, the heating mechanism 30 only needs to provide the heating tube 33 in the first heater 31, and the reflecting plate 34 is disposed in the second heater 32 to achieve the desired state. Heating conditions. Of course, in addition to the foregoing arrangement, the heating mechanism of the present invention can also provide a heating tube for both the first heater and the second heater, and even different heating modes for the first heater and the second heater. tube. The setting type of the heating mechanism of the present invention can be changed according to the actual heating demand, and is not limited to a single type. In addition, the forced convection mechanism can add a row of air ducts (not shown) to the air outlet 65, and circulate the hot air drawn by the air blower to the inside of the heating mechanism by the exhaust duct, thereby improving the energy saving effect. . Referring again to Fig. 4, it is a plan view of the slider carrier 12 and the adjustment block 13 of the present invention. As previously mentioned, each of the adjustment blocks 13 is disposed between the adjacent two slider carriers 12 for adjusting the spacing of the two slider carriers 12. In order to enable the slider carrier 12 and the adjustment block 13 to be quickly moved, the slider carrier 12 and the adjustment block 13 are made of a non-metallic material such as plastic material or bakelite to greatly reduce the slider. The overall weight of the carrier 12 and the adjustment block 13 allows the slider carrier 12 and the adjustment block 13 to be moved more quickly. However, the slider carriers 12 and the adjustment blocks 13 must be in contact with each other to drive each other, so that the sliding contact portions must have wear resistance of non-metallic materials such as wood and the respective adjustment blocks 13 . The degree of wear resistance, the mosquito-repellent material or electricity is particularly lower in each of the adjustment blocks 13 and each of the metal materials. Therefore, a metal piece 131, 121 is created. The mutual contact portion of the π ghost vehicle 12 is provided with a property, so that the transport sheet 2 can be both lightweight and wear resistant. $ to both fast moving and energy saving
斜制=:Α述的各滑塊载具12與各調整塊13係以塑膠材 ’可以射出成形之方式製造滑塊載具與調整 鬼13’並可將前述的金屬片12卜131就置於成形模具 :而以埋入射出方式來製造出具有金屬片121、131的 ’月塊載具12與調整塊13,如此更能增進製造上之便利性。 以上所述實施例之揭示係用以說明本創作，並非用 以限制本創作，故舉凡數值之變更或等效元件之置換仍應 隸屬本創作之範疇。 由以上詳細說明，可使熟知本項技藝者明瞭本創作 的確可達成前述目的，實已符合專利法之規定，爰提出專 利申請。 【圖式簡單說明】 第1圖係本創作之俯視圖 第2圖係本創作加熱構與強制對流機構之俯視圖 第3圖係本創作力α熱構與強制對流機構之侧視圖 第4圖係本創作之滑塊載具與a周整塊配合之俯視圖 M330182 【主要元件符號說明】 • 運送單元1 運送路徑11 / 滑塊載具12 ‘ 調整塊13 金屬片131、121 瓶胚供應部2 加熱單元3 * 加熱機構30 第一加熱器31 第二加熱器32 加熱管33 反射板34 成形部4 模具41 取出部5 -· 強制對流機構6 . 集風罩61 管路62 抽風機63 風扇64 排風口 6 5 瓶胚7Oblique =: Each of the slider carriers 12 and the adjustment blocks 13 described above are made of a plastic material 'which can be injection molded to manufacture a slider carrier and an adjustment ghost 13' and can be placed on the metal sheet 12 In the molding die: the 'moon block carrier 12 and the adjustment block 13 having the metal sheets 121 and 131 are manufactured in a buried manner, so that the manufacturing convenience is further enhanced. The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention. From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the aforementioned objectives, and has been in compliance with the provisions of the Patent Law, and has filed a patent application. [Simplified illustration of the drawing] Fig. 1 is a plan view of the creation. Fig. 2 is a plan view of the heating structure and the forced convection mechanism. Fig. 3 is a side view of the artificial force α thermal configuration and forced convection mechanism. Top view of the created slider carrier and the whole block of a week M330182 [Description of main component symbols] • Transport unit 1 Transport path 11 / Slider carrier 12 'Adjustment block 13 Metal piece 131, 121 Preform supply part 2 Heating unit 3 * Heating mechanism 30 First heater 31 Second heater 32 Heating pipe 33 Reflector 34 Forming part 4 Mold 41 Take-out part 5 - Forced convection mechanism 6. Windshield 61 Pipeline 62 Extractor 63 Fan 64 Exhaust vent 6 5 preforms 7