WO2021212622A1 - 一种吹制带把手瓶胚的加热装置 - Google Patents

一种吹制带把手瓶胚的加热装置 Download PDF

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Publication number
WO2021212622A1
WO2021212622A1 PCT/CN2020/094828 CN2020094828W WO2021212622A1 WO 2021212622 A1 WO2021212622 A1 WO 2021212622A1 CN 2020094828 W CN2020094828 W CN 2020094828W WO 2021212622 A1 WO2021212622 A1 WO 2021212622A1
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heating
preform
handle
blowing
bottle
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PCT/CN2020/094828
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English (en)
French (fr)
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邹大群
曾观源
刘敬锋
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广州达意隆包装机械股份有限公司
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Publication of WO2021212622A1 publication Critical patent/WO2021212622A1/zh

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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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6418—Heating of preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the invention relates to bottle blowing equipment, in particular to a heating device for blowing preforms with handles.
  • Plastic containers and bottles are commonly used utensils in people's daily life, and they are generally blown from a bottle embryo through a bottle blowing machine.
  • Common container bottles can be divided into two types with handles and without handles, and there are two types of container bottles with handles.
  • One is the rear handle bottle with the handle installed after the plastic bottle is blown, and the other This is a bottle with its own handle that is put in the handle during the blowing process and the two are blown into one.
  • the former bottle is usually made of PET (polyethylene terephthalate) material, and the latter bottle It is made of HDPE (high-density polyethylene) material.
  • the preform with handle is shown in FIG. 1, the two ends of the handle 102 are connected between the mouth of the preform 101 and the middle section of the bottle body.
  • the HDPE material with its own handle has defects such as incomplete sealing, easy damage to the bottle body and difficult control of the bottle capacity during the blowing process; while the PET material rear handle container bottle has relatively good airtightness, firmness and It is transparent and easy to observe, but the installation of the handle requires specific equipment production and installation, and it is easy to fall off after installation. This makes manufacturers hope to combine the advantages of the two and use PET materials to make containers with their own handles.
  • the current PET blow molding machine lacks an appropriate method for how to cool the handle part, or the equipment used is extremely complicated, which has a large adverse effect on the installation and processing of the blow molding machine.
  • the purpose of the present invention is to provide a heating device with a simple structure and suitable for PET bottle blowing machines to produce self-contained handle-type container bottles, so as to reduce the difficulty of making self-contained handle-type PET container bottles and improve its production quality and production efficiency.
  • the heating device for blowing preforms with handles of the present invention includes a heating box and a heating air duct for blowing in cooling air.
  • the heating zone is opposite to the air outlet area of the embryo body; the middle part of the heating zone and the air outlet area of the embryo body is oppositely installed with a partition board, and the position of the partition board is adjacent to the end of the handle on the preform,
  • the partition plate is provided with shielding baffles at intervals along the movement direction of the preform, and the shielding baffles are opposite to the position where the handle on the preform rotates to face the heating zone.
  • the space between the heating box and the air outlet area of the heating air duct is the heating zone where the preforms are placed and moved.
  • One side of the heating zone is a heating box with heating elements, which raises the temperature of the heating zone through the heating elements; and the other side of the heating zone is the bottle body outlet of the heating air duct, and the cooling air Blow to the heating zone from the air outlet of the bottle body, so as to prevent the heating zone from heating up continuously, which is beneficial to keeping the heating zone within the set temperature range.
  • the preform moves along the heating zone for continuous heating and subsequent processes, and at the same time it continuously rotates around the axis to enable it to be evenly heated.
  • the partition plate divides the heating area into two layers, one of which is opposite to the handle on the preform (tentatively called the handle area), and the other layer is opposite to the rest of the bottle body of the preform. (Tentatively referred to as the bottle body area), thereby reducing the transfer of heat from the bottle body area to the handle area; at the same time, shielding baffles are arranged on the partition plate at intervals, and these shielding baffles can block the heat emitted by the heating element and prevent the heat from being directly directed to The handle, and as the preform continues to rotate, the handle will face the air outlet of the bottle body of the heating air duct, and will be cooled by the cooling air, thereby avoiding the handle from being deformed due to excessively high temperature.
  • the structure of the heating device is extremely simple, but it cleverly divides the heating area into multiple areas according to the needs of the preform and its handle, so as to meet the blowing needs of the preform, and also protects the handle, thus smoothly
  • the PET bottle blowing machine is used to make the container bottle with its own handle, which effectively reduces the difficulty of making the PET container bottle with its own handle, and also improves the processing quality and production efficiency of the container bottle.
  • Figure 1 is a schematic diagram of the structure of a preform with a handle.
  • Figure 2 is a schematic view of the structure of a heating device for blowing preforms with handles.
  • Fig. 3 is a schematic diagram of the working state of the heating device for blowing preforms with a handle shown in Fig. 2.
  • Figure 4 is a schematic diagram of the structure of the heating box.
  • Figure 5 is a schematic diagram of the connecting structure of the partition plate and the shielding plate.
  • a heating device for blowing preforms with handles comprising a heating box 1 and a heating air duct 2 for blowing in cooling air.
  • the heating box is provided with a heating area 4 on which a heating element 3 is installed, and the heating air duct is provided with The air outlet area 5 of the embryo body opposite to the heating area; the heating area and the middle part of the air outlet area of the embryo body are oppositely installed with a partition board 6, and the position of the partition board is adjacent to the end of the handle on the preform, the heating area
  • the partition plate on one side is provided with shielding plates 7 at intervals along the moving direction of the preform, and the shielding plates are opposite to the position where the handle on the preform rotates to face the heating zone.
  • a plurality of stress relief grooves 61 are respectively opened on the two partition plates 6, and the stress relief grooves extend from the side of the partition plate close to the preform back to the preform.
  • the probability of deformation of the partition plate in a high temperature environment can be greatly reduced, thereby ensuring the safety of the equipment, production stability and production quality.
  • the heating element 3 includes several heating lamps arranged side by side.
  • the distance between each heating lamp and the preform can be set to be the same, or different distances can be set as needed, such as the heating lamp opposite to the handle.
  • the distance between the preform and the preform is greater than other heating lamps; or the distance between the heating lamp and the preform opposite to the bottleneck of the preform is greater than other heating lamps; thus meeting the heating requirements of different areas and different parts of the preform .
  • the heating box 1 is provided with an exhaust passage 11, which connects the space between the heating box and the air outlet area 5 of the heating air duct, that is, connects the heating area for heating the preform, so as to discharge the cooled cooling air in sequence go.
  • the heating device for blowing preforms with handles includes a body cooler 8 that blows cooling air into the heating air duct 2, and a cooling air duct 9 opposite to the preform opening and a cooling air duct toward the preform.
  • the preform cooler 10 blowing in the cooling air cools the preform body and the preform of the preform through different cooling fans and air ducts to meet the heating and cooling requirements of different parts of the preform.
  • the heating box 1 and the heating air duct 2 are located at the ends of the heating zone 4 and the air outlet zone 5 of the embryo body with cooling water channels 20 through which cooling water is passed.
  • the cooling water channels on both sides extend oppositely to the preform. The joint between the embryo and the embryo body is adjacent.
  • the area where the embryo mouth of the preform is located and the heating zone are separated from each other through the cooling water channel, so that the temperature control of the two areas is more accurate and stable, and on the other hand, it can also be used.
  • the preform opening is cooled through the cooling water channel, and at the same time, the cooling air blown from the cooling air channel can be guided, so that the cooling air can be blown to the desired position more accurately.
  • the space between the heating box and the air outlet zone of the heating air duct is the heating zone where the preform is placed and moved.
  • the left side of the heating zone is the heating zone with heating lamps and the right It is the air outlet area of the embryo body of the heating air duct.
  • the upper part of the heating area becomes a low temperature heating area with a lower temperature than the lower part due to the effect of the partition plate and the shielding baffle.
  • the lower part of the heating area is called ordinary heating Area.
  • the preform moves along the heating zone for continuous heating and subsequent processes, and at the same time it continuously rotates around the axis to enable it to be evenly heated.

Abstract

一种吹制带把手瓶胚的加热装置，加温箱(1)和加温风道(2)相对的加温区中部处分别设置有分隔板(6)，分隔板(6)的位置与瓶胚上的把手的末端相邻，且加温箱(1)一侧的分隔板(6)上沿瓶胚的移动方向间隔地设置有遮挡板(7)，遮挡板(7)与瓶胚上的把手转动至朝向发热区(4)的位置相对。瓶胚在加温的过程中一边沿加温区移动一边又会持续地绕轴线转动，当其转动至与加温箱(1)上的发热元件(3)相对时，即会受到遮挡板(7)的遮挡，使得发热灯管发出的热量无法直接传递至把手上。该加热装置结构极为简单而又巧妙地将分隔加温区，以适应瓶胚的吹制，又对把手进行了保护，从而顺利地利用PET吹瓶机制作自带把手式的容器瓶，有效地降低了自带把手PET容器瓶的制作难度，也提高了容器瓶的加工质量和生产效率。

Description

一种吹制带把手瓶胚的加热装置 技术领域
本发明涉及吹瓶设备，特别是涉及一种吹制带有把手瓶胚的加热装置。
背景技术
塑料容器瓶是人们日常生活中经常用到的器具，其一般由瓶胚经吹瓶机吹制而成。常见的容器瓶可以分为带把手和不带把手两类，而带有把手的容器瓶又分为两种，一种是在塑料瓶吹制完成后再安装把手的后置把手瓶，另一种是在吹制过程中就放入把手而将两者吹制为一体的自带把手瓶，前一种瓶通常采用PET(聚对苯二甲酸乙二醇酯)材质制作，后一种瓶则使用HDPE(高密度聚乙烯)材质制作。
带把手的瓶胚如图1所示，把手102的两端连接于瓶胚101的瓶口与瓶身中段之间。HDPE材质的自带把手容器瓶在吹制过程中存在密封不完全、瓶身容易破损和瓶子容量难以控制等缺陷；而PET材质后置把手容器瓶虽然相对具有较好的密封性、结实度和透明易观测等优点，但其把手的安装需要特定的设备生产和安装，且安装后容易脱落。这使得生产企业希望能够综合两者的优点，用PET材质制作自带把手式的容器瓶。但在PET吹瓶机的工作过程中，由于把手是已经制作好的而并不会参与吹制，故而必须要在瓶胚加温过程中对把手部位进行冷却处理，防止把手因高温而变形。而目前的PET吹瓶机对如何冷却把手部位却缺乏适当的方法，或者所用的设备极为复杂，无论对吹瓶机的安装设置还是加工过程都存在较大的不良影响。
发明内容
本发明的目的在于提供一种结构简单且适合于PET吹瓶机制作自带把手式容器瓶的加热装置，以降低自带把手式PET容器瓶的制作难度和提高其生产质量及生产效率。
本发明所述的吹制带把手瓶胚的加热装置，包括加温箱和吹入冷却风的加温风道，加温箱上设置安装有发热元件的发热区，加温风道设有与发热区相对的胚身出风区；发热区和胚身出风区的中部相对地安装有分隔板，且分隔板的位置与瓶胚上的把手的末端相邻，发热区一侧的分隔板上沿瓶胚的移动方向间隔地设置有遮挡板，且遮挡板与瓶胚上的把手转动至朝向发热区的位置相对。
本发明所述的吹制带把手瓶胚的加热装置，加热箱和加温风道出风区之间的空间，即为瓶胚放置和移动的加温区。加温区的一侧为带有发热元件的加温箱，其通过发热元件使加温区的温度升高；而加温区的另一侧为加温风道的瓶身出风口，冷却风从该瓶身出风口上 吹向加温区，从而避免加温区持续升温，有利于使加温区保持于设定温度范围。在瓶胚的加温过程中，瓶胚一边沿加温区移动，以使其不断加热和进行后续工序，一边又会持续地绕轴线转动，以使其能够均匀加热。在此过程中，分隔板将加温区分割为了两层，其中一层与瓶胚上的把手相对(暂称之为把手区)，而另一层则与瓶胚的其余瓶身位置相对(暂称之为瓶身区)，从而减少了瓶身区热量向把手区的传递；同时，分隔板上间隔设置遮挡板，这些遮挡板可以遮挡发热元件发出的热量，避免热量直接射向把手，而随着瓶胚的继续转动，把手将朝向加温风道的瓶身出风口，并由冷却风进行冷却，由此避免把手的温度过高变形。可见，该加热装置的结构极为简单，但却巧妙地将加温区按照瓶胚及其把手的需要分隔为多个区域，以适应瓶胚的吹制需要，又对把手进行了保护，从而顺利地利用PET吹瓶机制作自带把手式的容器瓶，有效地降低了自带把手PET容器瓶的制作难度，也提高了容器瓶的加工质量和生产效率。
附图说明
图1是带把手瓶胚的结构示意图。
图2是吹制带把手瓶胚的加热装置的结构示意图。
图3是图2所示吹制带把手瓶胚的加热装置的工作状态示意图。
图4是加温箱的结构示意图。
图5是分隔板和遮挡板的连接结构示意图。
具体实施方式
一种吹制带把手瓶胚的加热装置，包括加温箱1和吹入冷却风的加温风道2，加温箱上设置安装有发热元件3的发热区4，加温风道设有与发热区相对的胚身出风区5；发热区和胚身出风区的中部相对地安装有分隔板6，且分隔板的位置与瓶胚上的把手的末端相邻，发热区一侧的分隔板上沿瓶胚的移动方向间隔地设置有遮挡板7，且遮挡板与瓶胚上的把手转动至朝向发热区的位置相对。
所述的吹制带把手瓶胚的加热装置，两块分隔板6上分别开有若干条应力释放槽61，应力释放槽从分隔板上靠近瓶胚的一侧背向瓶胚延伸至分隔板的中部，通过该应力释放槽的设置可以极大地降低分隔板在高温环境中产生变形的几率，从而保证设备的安全性、生产稳定性和生产质量。
发热元件3包括若干条并列设置的发热灯管，各发热灯管与瓶胚之间的距离可以设置为全部一致，也可以视需要而设定不同为不同距离，如与把手相对的发热灯管与瓶胚之间的距离大于其它发热灯管；又或者与瓶胚瓶颈相对的发热灯管与瓶胚之间的距离大于其它发 热灯管；从而满足不同区域以及瓶胚不同部位的加温要求。
加温箱1上设有抽风通道11，抽风通道连通加热箱和加温风道出风区5之间的空间，即连通对瓶胚加热的加温区，从而将冷却后的冷却风顺序排走。
所述的吹制带把手瓶胚的加热装置，有向加温风道2吹入冷却风的胚身冷风机8，另有与瓶胚的胚口相对的冷却风道9和向冷却风道吹入冷却风的胚口冷风机10，通过不同冷风机和风道分别对瓶胚的胚身和胚口进行冷却，以满足瓶胚不同部分的加温和冷却要求。另外，加温箱1和加温风道2位于发热区4和胚身出风区5的末端处设有通入冷却水的冷却水道20，两侧的冷却水道相对向地延伸至与瓶胚胚口及胚身连接处相邻，由此，通过冷却水道一方面将瓶胚胚口所在区域与加温区相互隔开，使两个区域的温度控制更加准确和稳定，另一方面也可以通过冷却水道对瓶胚胚口进行冷却，同时还可以对冷却风道吹出的冷却风进行导向，使冷却风更准确地吹向所需位置。
如图2-5所示，加热箱和加温风道出风区之间的空间为瓶胚放置和移动的加温区，加温区左侧是设有发热灯管的发热区而右侧是加温风道的胚身出风区，同时，加温区的上部由于分隔板和遮挡板的作用而成为温度低于下部的低温加温区，加温区的下部则称普通加温区。在瓶胚的加温过程中，瓶胚一边沿加温区移动，以使其不断加热和进行后续工序，一边又会持续地绕轴线转动，以使其能够均匀加热。在此过程中，当瓶胚上的把手转动至与发热灯管相对时，即会受到遮挡板的遮挡，使得发热灯管发出的热量无法直接传递至把手上，由此避免把手的温度过高变形。

Claims (7)

  1. 一种吹制带把手瓶胚的加热装置，包括加温箱(1)和吹入冷却风的加温风道(2)，加温箱上设置安装有发热元件(3)的发热区(4)，加温风道设有与发热区相对的胚身出风区(5)，其特征在于：发热区和胚身出风区的中部相对地安装有分隔板(6)，且分隔板的位置与瓶胚上的把手的末端相邻，发热区一侧的分隔板上沿瓶胚的移动方向间隔地设置有遮挡板(7)，且遮挡板与瓶胚上的把手转动至朝向发热区的位置相对。
  2. 根据权利要求1所述的吹制带把手瓶胚的加热装置，其特征在于：两块分隔板(6)上分别开有若干条应力释放槽(61)，应力释放槽从分隔板上靠近瓶胚的一侧背向瓶胚延伸至分隔板的中部。
  3. 根据权利要求1或2所述的吹制带把手瓶胚的加热装置，其特征在于：发热元件(3)包括若干条并列设置的发热灯管。
  4. 根据权利要求3所述的吹制带把手瓶胚的加热装置，其特征在于：与把手相对的发热灯管与瓶胚之间的距离大于其它发热灯管与瓶胚之间的距离。
  5. 根据权利要求1或2所述的吹制带把手瓶胚的加热装置，其特征在于：加温箱(1)上设有抽风通道(11)，抽风通道连通加热箱和加温风道出风区(5)之间的空间。
  6. 根据权利要求1或2所述的吹制带把手瓶胚的加热装置，其特征在于：有向加温风道(2)吹入冷却风的胚身冷风机(8)，另有与瓶胚的胚口相对的冷却风道(9)和向冷却风道吹入冷却风的胚口冷风机(10)。
  7. 根据权利要求6所述的吹制带把手瓶胚的加热装置，其特征在于：加温箱(1)和加温风道(2)位于发热区(4)和胚身出风区(5)的末端处设有通入冷却水的冷却水道(20)，两侧的冷却水道相对向地延伸至与瓶胚胚口及胚身连接处相邻。
PCT/CN2020/094828 2020-04-20 2020-06-08 一种吹制带把手瓶胚的加热装置 WO2021212622A1 (zh)

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TWI763025B (zh) * 2020-09-07 2022-05-01 銓寶工業股份有限公司 把手瓶的吹塑成型方法
JP2023540165A (ja) * 2020-09-17 2023-09-22 広州達意隆包装機械股▲フン▼有限公司 取手付きｐｅｔボトルプリフォーム熱処理設備
CN114474678A (zh) * 2022-01-28 2022-05-13 深圳市舞动字节电子商务有限公司 一种固定分体式瓶体把手的方法

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