WO2019010936A1

WO2019010936A1 - Bottle preform heating and ventilation apparatus

Info

Publication number: WO2019010936A1
Application number: PCT/CN2018/072227
Authority: WO
Inventors: 邹大群; 邓志军; 牛凤莲
Original assignee: 广州达意隆包装机械股份有限公司
Priority date: 2017-07-10
Filing date: 2018-01-11
Publication date: 2019-01-17
Also published as: CN107283804A

Abstract

A bottle preform heating and ventilation apparatus. An air bellow (2) is provided with two different air inlets, and cooling air fed from the air inlets are separately guided to a bottle body and a bottleneck of a bottle preform (10); two heating boxes (1) are respectively provided on either side of the air bellow (2), and heating tubes (3) are mounted on the side faces of the heating boxes (1); the heating tubes (3) are opposite to a lower air outlet (24) of the air below (2) to form a heating region (4) for the bottle body of the bottle preform (10); the upper air outlet (23) of the air bellow (2) is used for independently blowing air to the bottleneck of the bottle preform (10); a circulating space is also formed in the heating box (1), hot air which cools the surface of the preform body can be guided to a side exhaust tube (5) through the circulating space, hot air in the side exhaust tube (5) is exhausted through a wind gathering tube (6) and a top exhaust tube (7), and the air bellow (2), the side exhaust tube (5) and the wind gathering tube (6) jointly encircle to form an inner exhaust space (8); the inner exhaust space (8) is used for guiding the air flow cooling the bottleneck to the top exhaust tube (7). The apparatus can avoid quality problem due to rapid rising of temperature and also can meet different blowing demands on the bottle body and the bottleneck; moreover, the probability of having defective products is extremely reduced, and the product quality is effectively improved.

Description

一种瓶胚加温通风装置Preform heating and ventilation device

技术领域Technical field

本发明涉及瓶胚吹制设备，特别是涉及一种吹瓶机中用以辅助吹瓶的瓶胚加温通风装置。The invention relates to a preform blowing device, in particular to a preform heating and ventilation device for assisting blowing in a bottle blowing machine.

背景技术Background technique

吹瓶机是将塑料颗粒通过一定的工艺手段吹成瓶子的机器，塑料颗粒即为瓶胚，该瓶胚通过加温区的加温装置作用而受热软化，然后将压缩空气通入瓶胚内，使塑料型坯吹胀而紧贴在模具内壁上，最后经冷却脱模即得到各种中空的瓶子。The bottle blowing machine is a machine for blowing plastic granules into bottles by a certain process. The plastic granules are the preforms, and the preforms are softened by heat by the heating device of the heating zone, and then the compressed air is introduced into the preforms. The plastic parison is inflated and adhered to the inner wall of the mold, and finally, various hollow bottles are obtained by cooling and demolding.

现有的吹瓶设备一般采用红外线加热，其内设置装有红外线灯管的加热箱，当瓶胚在红外线照射而升温至设定值后，再通入空气吹制成型。该种加温装置虽然能进行吹瓶制作，但却存在以下问题：一方面，瓶胚的吹制实际上只需要加热和吹制瓶身，而瓶颈处的温度必须保持在相对较低的温度范围，为了保持该温度则必须要持续不断地通入冷风；另一方面，加热区内除了瓶胚的存在之外还有大量的空气，这些空气同样会受热升温，但因现有的吹瓶设备缺乏有效的排风装置，导致热空气难以排走，冷风也难以进入，而进入后的冷风却容易与热空气相互影响而发生紊流。这最终导致瓶身和瓶颈处的温度既也不均匀，也无法有效保持在适当的范围，致使瓶身表面出现结晶化或瓶口螺纹及颈环变形，造成不良品产生几率的大幅上升，既浪费原材料也导致成本提高，且产品质量更难以有效保证。The existing blowing equipment is generally heated by infrared rays, and a heating box equipped with an infrared lamp tube is disposed therein. When the preform is heated to a set value by infrared irradiation, the air is blown into the air. Although the heating device can be blow-molded, the following problems exist: on the one hand, the blowing of the preform actually only needs to heat and blow the bottle, and the temperature at the neck of the bottle must be kept at a relatively low temperature. In order to maintain this temperature, it is necessary to continuously pass cold air; on the other hand, in addition to the presence of the preform in the heating zone, there is a large amount of air, which is also heated by heat, but due to the existing blowing bottle The lack of an effective air exhaust device causes the hot air to be difficult to drain, and the cold air is difficult to enter, and the cold air after entering is easily affected by the hot air to cause turbulence. This eventually causes the temperature at the bottle body and the bottle neck to be neither uniform nor effectively maintained in an appropriate range, resulting in crystallization of the surface of the bottle body or deformation of the bottle neck thread and the neck ring, resulting in a large increase in the probability of defective products. Waste of raw materials also leads to increased costs, and product quality is more difficult to guarantee.

发明内容Summary of the invention

本发明旨在提供一种使加热温度可控性更高的瓶胚加温通风装置，以提高瓶胚吹制质量。The invention aims to provide a preform warming and ventilation device with higher controllability of heating temperature to improve the quality of preform blowing.

本发明所述的瓶胚加温通风装置，包括发热的加热箱和通入冷风的风箱；所述的风箱包括箱体，箱体的内部分隔有不同的流通空间，箱体的顶部装有对气流进行导向的导风板，导风板和箱体的两侧分别设有横向的上出风口和下出风口，且上出风口和下出风口的方向相互平行，箱体的底部设有第一进风口和第二进风口，第一进风口经箱体内部的流通空间通过导风板连通上出风口，第二进风口经箱体内部的其它流通空间连通下出风口；有两个所述的加热箱分别设置于风箱的两侧，加热箱朝向风箱的一侧相对风箱下出风口处装有发热的加热管，加热管和风箱下出风口的相对空间形成加热区，瓶胚的胚身位于位于加热区内而瓶颈位于加热区外且与风箱上出风口相对，加热箱位于加热管的下方开有热风进风口，加热箱的顶部开有热风出风口，热风进风口与热风出风口通过加热箱的内部空间连通；两侧的加热箱上方均安装有用于排风的侧排风管，侧排风管的入口设于底部且与加热箱的热风出风口连通，侧排风管的上部装有与侧排风管的出口连通的集风管，集风管设有出口的端部横向延伸至风箱的上方，集风管末端的上方装有顶排风管，顶排风管的入口设于底部且同时覆盖两侧的集风管的出口，下方的风箱、两侧的侧排风管和上方的集风管共同围成了内排风空间，风箱下出风口送入的气流经加热箱进入侧排风管，风箱上出风口送入的气流则经内排风空间导向顶排风管的入口。The preform heating and ventilating device of the present invention comprises a heating heating box and a wind box for introducing cold air; the bellows comprises a box body, the inside of the box body is separated by different circulation spaces, and the top of the box body is provided with a pair The air guiding guide air guiding plate, the air guiding plate and the two sides of the box body are respectively provided with a horizontal upper air outlet and a lower air outlet, and the upper air outlet and the lower air outlet are parallel to each other, and the bottom of the box is provided with a first An air inlet and a second air inlet, the first air inlet communicates with the air outlet through the air guiding plate, and the second air inlet communicates with the air outlet through the other circulation space inside the box; The heating boxes are respectively disposed on two sides of the wind box, and the heating box is arranged on the side of the wind box opposite to the lower air outlet of the wind box, and the heating space is formed in the air outlet of the air box, and the heating space and the air outlet of the air box form a heating area, and the embryo of the preform The body is located in the heating zone and the bottle neck is located outside the heating zone and opposite to the air outlet on the bellows. The heating box is located below the heating pipe and has a hot air inlet. The top of the heating box is provided with a hot air outlet, the hot air inlet and the heat. The air outlet is connected through the inner space of the heating box; the side exhaust pipes for exhausting are installed above the heating boxes on both sides, and the inlet of the side exhaust pipe is arranged at the bottom and communicates with the hot air outlet of the heating box, and the side exhausts The upper part of the tube is provided with a collecting duct which communicates with the outlet of the side exhaust duct, and the end of the collecting duct with the outlet extends laterally to the top of the bellows, and the top end of the collecting duct is provided with a top exhaust duct, and the top exhausting air The inlet of the tube is arranged at the bottom and covers the outlets of the collecting ducts on both sides at the same time. The lower bellows, the side exhaust ducts on both sides and the upper collecting duct jointly enclose the inner exhaust air space, and the air outlet of the bellows is sent in. The airflow enters the side exhaust duct through the heating box, and the airflow sent from the air outlet of the bellows is guided to the entrance of the top exhaust duct through the inner exhaust air space.

本发明所述的瓶胚加温通风装置，风箱位于下方的中部，加热箱设于下方两侧，加热箱上方——即该装置的侧边设置侧排风管，而上方则装有集风管和顶排风管，由此形成了一个上、下、左、右四壁的空间，该空间的方向，即垂直于四壁的方向，是吹瓶机瓶胚的移动方向，瓶胚沿该方向运动并被加热箱加热软化，而加热过程所需的气流则沿本发明所述的装置上的各通道流动。当进行瓶胚加热时，瓶胚的瓶身位于加热区内，而瓶口则位于加热区的上方，使得瓶身受热以供后续吹制的需要，瓶口则可以避免温度过高而变形；同时，风箱通过第一进风口和第二进风口根据瓶胚瓶身和瓶口的不同需求而分别送入不同的冷风，第二进风口送入的冷风经下出风口吹向瓶胚瓶身，将加热区的热空气带走，避免瓶身温度上升过快，而这些带走了热空气的混合气流则流向加热箱的热风进风口，最后经加热箱内部、侧排风管、集风管和顶排风管排走；另一方面，风箱第一进风口送入的冷风经导风板从上出风口吹向瓶胚的瓶颈，从而对瓶颈进行降温，接着，经过降温的气流吹至侧排风管的外壁，然后沿内排风空间流向顶排风管底部的入口，最后与集风管排出的热气流同样由顶排风管排走。该装置一方面可以将加热区的热空气排走，避免因升温过快而产生质量问题；另一方面可以根据瓶胚瓶身和瓶口的吹制要求而送入不同的冷风，满足它们不同的加温和冷却要求，同时，通过侧排风管及其围成的内排风空间可以将冷却后气流从不同的风道排走，从而极大地降低了不良品的产生几率，并有效提高了产品质量。The preform heating and ventilating device of the present invention has a bellows located at a lower central portion, and a heating box is disposed at the lower two sides, above the heating box, that is, a side exhaust duct is arranged at a side of the device, and a wind collecting device is arranged at the upper side. The tube and the top exhaust duct form a space of upper, lower, left and right walls, and the direction of the space, that is, the direction perpendicular to the four walls, is the moving direction of the preform of the blow molding machine, and the preform along the preform This direction is moved and softened by the heating chamber, and the air flow required for the heating process flows along the various channels on the device of the present invention. When the preform is heated, the bottle body of the preform is located in the heating zone, and the bottle mouth is located above the heating zone, so that the bottle body is heated for the subsequent blowing, and the bottle mouth can avoid deformation due to excessive temperature; At the same time, the bellows respectively send different cold air according to the different requirements of the preform bottle body and the bottle mouth through the first air inlet and the second air inlet, and the cold air sent from the second air inlet is blown to the bottle body through the lower air outlet. The hot air in the heating zone is taken away to avoid the temperature rise of the bottle body too fast, and the mixed air flow that takes away the hot air flows to the hot air inlet of the heating box, and finally passes through the inside of the heating box, the side exhaust pipe, and the collecting wind. The tube and the top exhaust duct are drained; on the other hand, the cold air sent from the first air inlet of the bellows is blown from the upper air outlet to the bottle neck of the preform through the air deflector, thereby cooling the bottle neck, and then, the airflow is cooled by the cooling air. The outer wall of the side exhaust duct flows to the inlet of the bottom exhaust duct along the inner exhaust air space, and finally the hot air flow discharged from the collecting duct is also discharged by the top exhaust duct. On the one hand, the device can remove the hot air in the heating zone to avoid quality problems caused by excessive temperature rise; on the other hand, different cold air can be sent according to the requirements of the bottle body and the bottle mouth to meet different requirements. The heating and cooling requirements, at the same time, through the side exhaust duct and its enclosed internal exhaust air space, the cooled airflow can be discharged from different air ducts, thereby greatly reducing the probability of occurrence of defective products and effectively improving Product quality.

附图说明DRAWINGS

图1是瓶胚加温通风装置的结构示意图。Figure 1 is a schematic view showing the structure of a preform heating and ventilating device.

图2是瓶胚加温通风装置的气流方向示意图。Figure 2 is a schematic view of the airflow direction of the preform heating and ventilation device.

图3是加热箱的结构示意图。Figure 3 is a schematic view of the structure of the heating box.

图4是风箱的结构示意图。4 is a schematic structural view of a bellows.

图5是侧排风管的结构示意图。Fig. 5 is a schematic structural view of a side exhaust duct.

具体实施方式Detailed ways

一种瓶胚加温通风装置，包括发热的加热箱1和通入冷风的风箱2；所述的风箱包括箱体21，箱体的内部分隔有不同的流通空间，箱体的顶部装有对气流进行导向的导风板22，导风板和箱体的两侧分别设有横向的上出风口23和下出风口24，且上出风口和下出风口的方向相互平行，箱体的底部设有第一进风口25和第二进风口26，第一进风口经箱体内部的流通空间通过导风板连通上出风口，第二进风口经箱体内部的其它流通空间连通下出风口；有两个所述的加热箱分别设置于风箱的两侧，加热箱朝向风箱的一侧相对风箱下出风口处装有发热的加热管3，加热管和风箱下出风口的相对空间形成加热区4，瓶胚10的胚身位于加热区内而瓶颈位于加热区外且与风箱上出风口相对，加热箱位于加热管的下方开有热风进风口11，加热箱的顶部开有热风出风口12，热风进风口与热风出风口通过加热箱的内部空间连通；两侧的加热箱上方均安装有用于排风的侧排风管5，侧排风管的入口设于底部且与加热箱的热风出风口连通，侧排风管的上部装有与侧排风管的出口连通的集风管6，集风管设有出口的端部横向延伸至风箱的上方，集风管末端的上方装有顶排风管7，顶排风管的入口设于底部且同时覆盖两侧的集风管的出口，下方的风箱、两侧的侧排风管和上方的集风管共同围成了内排风空间8，风箱下出风口送入的气流经加热箱进入侧排风管，风箱上出风口送入的气流则经内排风空间导向顶排风管的入口。A preform warming and ventilating device comprises a heating heating box 1 and a wind box 2 for introducing cold air; the bellows comprises a box body 21, the inside of the box body is separated by different circulation spaces, and the top of the box body is provided with a pair The air guiding guide 22 is provided with a horizontal upper air outlet 23 and a lower air outlet 24 on both sides of the air guiding plate and the box body, and the upper air outlet and the lower air outlet are parallel to each other, and the bottom of the box is parallel. The first air inlet 25 and the second air inlet 26 are provided. The first air inlet communicates with the upper air outlet through the air distribution plate, and the second air inlet communicates with the air outlet through other circulation spaces inside the box. There are two heating boxes respectively arranged on both sides of the wind box, one side of the heating box facing the wind box is equipped with a heating heating pipe 3 at the lower air outlet of the wind box, and the heating space and the opposite space of the air outlet of the bellows are heated. Zone 4, the embryo body of the preform 10 is located in the heating zone and the bottle neck is located outside the heating zone and opposite to the air outlet on the bellows. The heating box is located below the heating pipe and has a hot air inlet port 11, and the top of the heating box is provided with a hot air outlet. 12, hot air inlet The hot air outlet is connected through the inner space of the heating box; the side exhaust pipes 5 for exhausting are installed above the heating boxes on both sides, and the inlet of the side exhaust pipe is arranged at the bottom and communicates with the hot air outlet of the heating box, the side The upper part of the exhaust duct is provided with a collecting duct 6 which communicates with the outlet of the side exhaust duct, and the end of the collecting duct with the outlet extends laterally to the upper side of the bellows, and the top exhaust duct 7 is arranged above the end of the collecting duct. The inlet of the top exhaust duct is arranged at the bottom and covers the outlets of the collecting ducts on both sides at the same time, and the lower bellows, the side exhaust ducts on both sides and the upper collecting duct jointly enclose the inner exhaust air space 8, the bellows The airflow sent from the lower air outlet enters the side exhaust duct through the heating box, and the airflow sent from the air outlet of the windbox is guided to the entrance of the top exhaust duct through the inner exhaust air space.

如图1所示，风箱位于下方的中部，加热箱设于下方两侧，加热箱上方——即该装置的侧边设置侧排风管，而上方则装有集风管和顶排风管，由此形成了一个上、下、左、右四壁的空间，瓶胚则位于该空间内沿纸面方向移动。当进行瓶胚加热时，瓶胚的瓶身位于加热区内，而瓶口则位于加热区的上方，使得瓶身受热以供后续吹制的需要，瓶口则可以避免温度过高而变形；同时，风箱通过第一进风口和第二进风口根据瓶胚瓶身和瓶口的不同需求而分别送入不同的冷风，第二进风口送入的冷风经下出风口吹向瓶胚瓶身，将加热区的热空气带走，避免瓶身温度上升过快，而这些带走了热空气的混合气流则流向加热箱的热风进风口，最后经加热箱内部、侧排风管、集风管和顶排风管排走；另一方面，风箱第一进风口送入的冷风经导风板从上出风口吹向瓶胚的瓶颈，从而对瓶颈进行降温，接着，经过降温的气流吹至侧排风管的外壁，然后沿内排风空间流向顶排风管底部的入口，最后与集风管排出的热气流同样由顶排风管排走。As shown in Fig. 1, the bellows is located in the lower middle part, and the heating box is arranged on the lower two sides, above the heating box, that is, the side of the device is provided with a side exhaust duct, and the upper part is provided with a collecting duct and a top exhaust duct. Thereby, a space of upper, lower, left and right walls is formed, and the preform is moved in the space in the direction of the paper. When the preform is heated, the bottle body of the preform is located in the heating zone, and the bottle mouth is located above the heating zone, so that the bottle body is heated for the subsequent blowing, and the bottle mouth can avoid deformation due to excessive temperature; At the same time, the bellows respectively send different cold air according to the different requirements of the preform bottle body and the bottle mouth through the first air inlet and the second air inlet, and the cold air sent from the second air inlet is blown to the bottle body through the lower air outlet. The hot air in the heating zone is taken away to avoid the temperature rise of the bottle body too fast, and the mixed air flow that takes away the hot air flows to the hot air inlet of the heating box, and finally passes through the inside of the heating box, the side exhaust pipe, and the collecting wind. The tube and the top exhaust duct are drained; on the other hand, the cold air sent from the first air inlet of the bellows is blown from the upper air outlet to the bottle neck of the preform through the air deflector, thereby cooling the bottle neck, and then, the airflow is cooled by the cooling air. The outer wall of the side exhaust duct flows to the inlet of the bottom exhaust duct along the inner exhaust air space, and finally the hot air flow discharged from the collecting duct is also discharged by the top exhaust duct.

所述的瓶胚加温通风装置，如图3所示，加热箱1朝向风箱2的一侧并列安装有若干条加热管3，相邻加热管之间留有间隙，间隙连通至加热箱内部。多条并列安装的加热管可以使得瓶胚瓶身受热更加均匀和稳定，而间隙连通加热箱内部的设置，使得风箱2下出风口吹出的冷风经过对瓶胚瓶身降温后，可以更快、更顺利地从加热箱流入侧排风管。The preform heating and ventilating device, as shown in FIG. 3, a plurality of heating tubes 3 are arranged side by side on the side of the heating box 1 facing the bellows 2, and a gap is left between the adjacent heating tubes, and the gap is communicated to the inside of the heating box. . A plurality of heating tubes arranged side by side can make the preform body more uniform and stable in heat, and the gap communicates with the arrangement inside the heating box, so that the cold air blown out by the air outlet of the bellows 2 can be cooled faster after cooling the bottle body. More smoothly from the heating box into the side exhaust duct.

如图4所示，第一进风口25设置于风箱2底部的中部位置，两个所述的第二进风口26分别设置于第一进风口的两侧，且相互之间的连线方向与瓶胚的输送方向相平行；风箱2内部的流通空间包括连通导风板22和第一进风口25的中部空间，和连通下出风口24和第二进风口26的侧部空间，中部空间设置于箱体21的中部，侧部空间围绕于中部空间的四周。该种结构使得侧部空间的空间体积更大，这是因为瓶身降温的需求较瓶口为高，而更大的侧部空间则较为容易通过大流量的冷风，从而满足生产需要。As shown in FIG. 4, the first air inlet 25 is disposed at a middle position of the bottom of the wind box 2, and the two second air inlets 26 are respectively disposed at two sides of the first air inlet, and the connection direction between the two is The conveying direction of the preforms is parallel; the circulation space inside the bellows 2 includes a middle space connecting the wind deflector 22 and the first air inlet 25, and a side space connecting the lower air outlet 24 and the second air inlet 26, the central space setting In the middle of the casing 21, the side space surrounds the circumference of the central space. This kind of structure makes the space of the side space larger, because the bottle body needs to be cooled higher than the bottle mouth, and the larger side space is easier to pass the large flow of cold air, thereby meeting the production needs.

所述的瓶胚加温通风装置，如图1所示，风箱2内连通下出风口24的流通空间，装有送风机91，送风机通过第二进风口26抽取冷风并送至风箱两侧的下出风口；侧排风管5与集风管6之间装有抽风机92，抽风机抽取侧排风管内的风并导向集风管的出口。通过送风机和抽风机的设置，一方面可以加快冷风送风速度，从而提高生产效率，另一方面则可以加快混合风的排出速度，保证生产的顺畅和稳定，从而提高产品质量。The preform warming and ventilating device, as shown in FIG. 1 , is connected to the circulation space of the lower air outlet 24 in the wind box 2, and is provided with a blower 91. The blower extracts cold air through the second air inlet 26 and sends it to the lower sides of the bellows. The air outlet is provided with an exhaust fan 92 between the side exhaust duct 5 and the collecting duct 6, and the exhaust fan extracts the wind in the side exhaust duct and leads to the outlet of the collecting duct. Through the arrangement of the blower and the exhaust fan, on the one hand, the cold air supply speed can be accelerated, thereby improving the production efficiency, and on the other hand, the discharge speed of the mixed air can be accelerated, the production is smooth and stable, and the product quality is improved.

瓶胚加温通风装置内的气流流动方向如图2中箭头所示，冷风F1通过第一进风口送入，冷风F2通过第二进风口送入，经冷却后的混合风F3经顶排风管送走，为了保证该气流的准确性和顺畅性，可如图1、5所示，将排风管5设置为包括连接加热箱1的热风出风口12的下排风管51，和连接集风管6的上排风管52，且下排风管连接加热箱1的一端的尺寸大于连接上排风管的一端，使得下排风管呈倒漏斗状，从而更快速准确地对装置内两侧的气流进行导向，同时还可以设置抽风机和送风机的风量，具体设置为抽风机92的吸风量大于送风机91的风量，且顶排风管7的排风量大于风箱2的送风量，即混合风F3风量大于冷风F1与F2的风量之和，从而更好地确保装置内的气流如图2所示，进而提高设备的工作稳定性和产品质量。The flow direction of the airflow in the preform heating and ventilation device is as shown by the arrow in Fig. 2, the cold air F1 is sent through the first air inlet, the cold air F2 is sent through the second air inlet, and the cooled mixed air F3 is exhausted through the top. The tube is sent away, and in order to ensure the accuracy and smoothness of the air flow, as shown in FIGS. 1 and 5, the exhaust duct 5 is disposed to include a lower exhaust duct 51 connecting the hot air outlet 12 of the heating box 1, and the connection The upper exhaust duct 52 of the air duct 6 and the one end of the lower exhaust duct connected to the heating tank 1 are larger than the one end connected to the upper exhaust duct, so that the lower exhaust duct has an inverted funnel shape, thereby more quickly and accurately facing the device. The air flow on the inner side is guided, and the air volume of the exhaust fan and the blower can also be set, specifically, the air suction amount of the air blower 92 is larger than the air volume of the air blower 91, and the air exhaust volume of the top exhaust air duct 7 is larger than the air supply of the wind box 2 The amount, that is, the mixed air F3 air volume is greater than the sum of the air volumes of the cold air F1 and F2, thereby better ensuring the airflow in the device as shown in FIG. 2, thereby improving the working stability and product quality of the device.

Claims

一种瓶胚加温通风装置，包括发热的加热箱(1)和通入冷风的风箱(2)，其特征在于：风箱包括箱体(21)，箱体的内部分隔有不同的流通空间，箱体的顶部装有对气流进行导向的导风板(22)，导风板和箱体的两侧分别设有横向的上出风口(23)和下出风口(24)，且上出风口和下出风口的方向相互平行，箱体的底部设有第一进风口(25)和第二进风口(26)，第一进风口经箱体内部的流通空间通过导风板连通上出风口，第二进风口经箱体内部的其它流通空间连通下出风口；有两个所述的加热箱分别设置于风箱的两侧，加热箱朝向风箱的一侧相对风箱下出风口处装有发热的加热管(3)，加热管和风箱下出风口的相对空间形成加热区(4)，瓶胚(10)的胚身位于加热区内而瓶颈位于加热区外且与风箱上出风口相对，加热箱位于加热管的下方开有热风进风口(11)，加热箱的顶部开有热风出风口(12)，热风进风口与热风出风口通过加热箱的内部空间连通；两侧的加热箱上方均安装有用于排风的侧排风管(5)，侧排风管的入口设于底部且与加热箱的热风出风口连通，侧排风管的上部装有与侧排风管的出口连通的集风管(6)，集风管设有出口的端部横向延伸至风箱的上方，集风管末端的上方装有顶排风管(7)，顶排风管的入口设于底部且同时覆盖两侧的集风管的出口，下方的风箱、两侧的侧排风管和上方的集风管共同围成了内排风空间(8)，风箱下出风口送入的气流经加热箱进入侧排风管，风箱上出风口送入的气流则经内排风空间导向顶排风管的入口。The invention relates to a preform heating and ventilation device, comprising a heating heating box (1) and a wind box (2) for introducing cold air, wherein the bellows comprises a box body (21), and the inside of the box body is separated by different circulation spaces. The top of the box body is provided with a wind deflecting plate (22) for guiding the airflow, and the air guiding plate and the two sides of the box body are respectively provided with a horizontal upper air outlet (23) and a lower air outlet (24), and the upper air outlet Parallel to the direction of the lower air outlet, the bottom of the box body is provided with a first air inlet (25) and a second air inlet (26), and the first air inlet is connected to the air outlet through the wind deflector through the air circulation inside the box. The second air inlet is connected to the lower air outlet through another circulation space inside the box; two of the heating boxes are respectively disposed on two sides of the wind box, and the heating box is heated toward the side of the wind box and is heated at the lower air outlet of the wind box. The heating pipe (3), the heating pipe and the opposite space of the air outlet of the bellows form a heating zone (4), the embryo body of the preform (10) is located in the heating zone and the bottle neck is located outside the heating zone and is opposite to the air outlet on the bellows. The heating box is located below the heating pipe and has a hot air inlet (11), and the top of the heating box is heated. The air outlet (12), the hot air inlet and the hot air outlet are connected through the inner space of the heating box; the side exhaust pipes (5) for exhausting are installed above the heating boxes on both sides, and the inlet of the side exhaust duct is arranged at The bottom part is connected to the hot air outlet of the heating box, and the upper part of the side exhaust duct is provided with a collecting duct (6) communicating with the outlet of the side exhaust duct, and the end of the collecting duct with the outlet extends laterally to the upper side of the bellows Above the end of the collecting duct is arranged with a top exhaust duct (7), the inlet of the top exhaust duct is arranged at the bottom and covers the outlets of the collecting ducts on both sides, the bellows on the lower side, the side exhaust ducts on both sides and The upper collecting ducts are enclosed by the inner exhausting space (8), and the airflow sent from the air outlet of the bellows enters the side exhaust duct through the heating box, and the airflow sent by the air outlet of the bellows is guided by the inner exhausting air space. The entrance to the exhaust duct.
根据权利要求1所述的瓶胚加温通风装置，其特征在于：加热箱(1)朝向风箱(2)的一侧并列安装有若干条加热管(3)，相邻加热管之间留有间隙，间隙连通至加热箱内部。The preform warming and ventilating device according to claim 1, characterized in that: the heating box (1) is arranged side by side with a plurality of heating tubes (3) facing one side of the bellows (2), leaving between adjacent heating tubes The gap and the gap are connected to the inside of the heating box.
根据权利要求1所述的瓶胚加温通风装置，其特征在于：第一进风口(25)设置于风箱(2)底部的中部位置，两个所述的第二进风口(26)分别设置于第一进风口的两侧，且相互之间的连线方向与瓶胚的输送方向相平行。The preform warming and ventilating device according to claim 1, wherein the first air inlet (25) is disposed at a central portion of the bottom of the bellows (2), and the two of the second air inlets (26) are respectively disposed. On both sides of the first air inlet, and the direction of the connection between them is parallel to the conveying direction of the preform.
根据权利要求3所述的瓶胚加温通风装置，其特征在于：风箱(2)内部的流通空间包括连通导风板(22)和第一进风口(25)的中部空间，和连通下出风口(24)和第二进风口(26)的侧部空间，中部空间设置于箱体(21)的中部，侧部空间围绕于中部空间的四周。The preform warming and ventilating device according to claim 3, wherein the circulation space inside the bellows (2) comprises a central space connecting the air deflector (22) and the first air inlet (25), and is connected to the lower air outlet. The side space of the tuyere (24) and the second air inlet (26), the middle space is disposed in the middle of the box body (21), and the side space surrounds the circumference of the middle space.
根据权利要求1所述的瓶胚加温通风装置，其特征在于：排风管(5)包括连接加热箱(1)的热风出风口(12)的下排风管(51)，和连接集风管(6)的上排风管(52)，且下排风管连接加热箱(1)的一端的尺寸大于连接上排风管的一端。The preform warming and ventilating device according to claim 1, characterized in that the exhaust duct (5) comprises a lower exhaust duct (51) connected to the hot air outlet (12) of the heating box (1), and a connection set The upper exhaust pipe (52) of the air duct (6), and one end of the lower exhaust pipe connected to the heating box (1) is larger than the one end connected to the upper exhaust pipe.
根据权利要求1或5所述的瓶胚加温通风装置，其特征在于：风箱(2)内连通下出风口(24)的流通空间，装有送风机(91)，送风机通过第二进风口(26)抽取冷风并送至风箱两侧的下出风口；侧排风管(5)与集风管(6)之间装有抽风机(92)，抽风机抽取侧排风管内的风并导向集风管的出口。The preform heating and ventilating device according to claim 1 or 5, characterized in that: the wind box (2) communicates with the circulation space of the lower air outlet (24), and is equipped with a blower (91), and the blower passes through the second air inlet ( 26) Extracting cold air and sending it to the lower air outlet on both sides of the bellows; an exhaust fan (92) is arranged between the side exhaust duct (5) and the collecting duct (6), and the exhaust fan extracts the wind in the side exhaust duct and guides The outlet of the collection duct.
根据权利要求6所述的瓶胚加温通风装置，其特征在于：抽风机(92)的吸风量大于送风机(91)的风量，且顶排风管(7)的排风量大于风箱(2)的送风量。The preform warming and ventilating device according to claim 6, wherein the suction air volume of the exhaust fan (92) is larger than the air volume of the blower (91), and the exhaust air volume of the top exhaust air duct (7) is larger than the wind box (2) The amount of air delivered.