CN1223930A - Preheating device for injection, drawing and blowing secondary forming of plastic bottle parison - Google Patents
Preheating device for injection, drawing and blowing secondary forming of plastic bottle parison Download PDFInfo
- Publication number
- CN1223930A CN1223930A CN 98104974 CN98104974A CN1223930A CN 1223930 A CN1223930 A CN 1223930A CN 98104974 CN98104974 CN 98104974 CN 98104974 A CN98104974 A CN 98104974A CN 1223930 A CN1223930 A CN 1223930A
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- pipe
- heat
- preheating
- plastic bottle
- preheating chamber
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
A preheating apparatus for the parison of plastic bottle shaped through two passes features that insulating can and top cover constitute a preheating chamber in which the heat transfer medium is forced to flow in it, and said top cover has uniform parison-holding holes with clips for suspending the bottle parisons in the preheating chamber. It is suitable for PET, PC and PE bottle parison with large-area uniform temp field. Its advantage is shorter preheating time.
Description
The present invention relates to the plastic bottle blank preheating device.More particularly, be a kind of plastic bottle blank preheating device of annotating in the stretch blow post forming mode that is applied in.
At present, generally use the preheating method in the plastic bottle blank preheating device to have two kinds, i.e. metal preheater and far infrared preheater.This wherein, the metal preheater generally is to adopt the nichrome resistance wire as thermal source, as heat-conducting medium, in thermal medium aluminium offers through hole simultaneously with aluminium, by to hollow aluminum pipe heating, heat reaches pipe by tube wall by the air in managing again.The defective that this preheating method mainly exists is:
1, preheating time long, pipe is heated inhomogeneous, has had a strong impact on the bottle blowing quality.Its reason is that not only the heat that thermal source sends is to be passed to pipe by multiple medium; With the place of thermal source different distance, the heat that obtains is different; Especially owing to almost static air in the metal tube has had a strong impact on heat conducting efficient and its pre-heat effect.
2, this preheating method only is applicable to the PET pipe.For with the pipe as raw material such as PC.PE, to compare with the PET pipe, the former expanded by heating is bigger frequently.Therefore, the metal pipe-wall bonding that is easy to after pipe is heated and conducts heat.If by increasing the metal tube diameter pipe can't be contacted with metal pipe-wall, not only preheating time need be very long, and the effect of preheating also can't reach the needs of production.
3, as the nichrome resistance wire of thermal source, because reasons such as oxidations, service life is short.And the heater element resistance wire generally all is to be embedded in the aluminium sheet as thermal medium with thermosetting plastics, and in actual the use, maintenance is difficulty very.
Far infrared preheater of the prior art generally is to make pipe along a circumference revolution time, accepts far infrared radiation by a semi-enclosed space.For pipe is heated evenly, the far infrared preheater of various different structures has all adopted a common structure, and promptly pipe is removed in warm outside the revolution, also ceaselessly rotation.The preheater that has even make pipe in revolution, mortar is also done axial upper and lower moving when changeing, and obviously, this structural design is extremely complicated.Yet, still do not have to solve effectively the problem of " thermally equivalent " like this.Reason is that their temperature fields own are uneven, in this uneven temperature field, has both made pipe in motion regularly, and its result also is " well-regulated inhomogeneous ".
No matter above-mentioned which kind of preheating method has enough big capacity bottle bases of homogeneous temperature field on a large scale for requiring, its pre-heat effect can not satisfy the requirement of bottle blowing especially.At present, also never have a kind of various raw materials that can be widely used in comprising PET, PC and PE, big capacity, can satisfy the bottle base preheating device that bottle blowing requires.
The objective of the invention is to the company's of avoiding weak point of the prior art, a kind of preheating device for injection, drawing and blowing secondary forming of plastic bottle parison is provided, its version can be widely used in various raw materials such as PET, PC and PE, and its enough large-scale even temperature field energy satisfies the bottle base preheating requirement of any capacity
Purpose of the present invention is achieved through the following technical solutions
Design feature of the present invention is to constitute preheating chamber by heat-preserving container and bucket top blind flange, forced flow has the hot gas as heat-conducting medium in the described preheating chamber, on described bucket top blind flange, evenly offer the pipe putting hole, be provided with in order to pipe is suspended on the pipe neck chuck in the preheating chamber in the pipe putting hole.
The present invention is that hot gas with forced flow is as heat-conducting medium, its particular structure setting can be widely used in comprising the preheating of the plurality of raw materials bottle base of PET, PC and PE, it is large-scale even temperature field enough, can satisfy the bottle base preheating requirement of any capacity.The present invention has not only realized foregoing purpose well, and compared with the prior art, preheating speed of the present invention is fast, only needs 1/5th of common preheater preheating time, and it is simple in structure, easy to operate, reliable in function, be easy to safeguard, and is with low cost.
Fig. 1 is an internal structure schematic diagram of the present invention.
Fig. 2 is a plan structure schematic diagram of the present invention.
By the following examples, in conjunction with the accompanying drawings the present invention being made a step describes.
Embodiment:
Referring to accompanying drawing 1,2, constitute preheating chamber by heat-preserving container 6 and bucket top blind flange 2, forced flow has the hot gas as heat-conducting medium in the preheating chamber, evenly offers pipe putting hole 9 on bucket top blind flange 2, is provided with in order to pipe 1 is suspended on the pipe neck chuck 10 in the preheating chamber in the hole 9.Have the pipe neck chuck 10 of different clamping internal diameters by replacing, can be applied to the bottle base preheating of different size mutually.
As shown in the figure, preheating chamber is a closed cavity, along heat-preserving container 6 madial walls heat-generating pipe 3 is set, rotation fan blade 7 is set in heat-preserving container 6 bottoms, driving fan blade 7 by motor 8 rotates, force the hot gas that has been heated by heat-generating pipe 3 in preheating chamber, to circulate, thereby in preheating chamber, form the even temperature field.
Heating wire or the electrothermal tube of heat-generating pipe 3 its heater elements in the present embodiment for evenly arranging.
In order to realize the automatic control of different temperatures setting value, in preheating chamber, be provided with temperature-sensing probe 5, the temperature controller 4 that is output as detection signal with this temperature-sensing probe 5 is set simultaneously.Select 0-300 ℃ temperature controlling range, can satisfy the pre-heat demand of all different bottle bases basically.
In warm, need not to rotate or move the pipe that is suspended in the pipe neck chuck, when arrive in the preheating time of setting, take out pipe, send into bottle blowing machine and finish blowing.
Claims (3)
1. a notes grain is cut the secondary forming of plastic bottle parison preheating device, it is characterized in that constituting preheating chamber by heat-preserving container (6) and bucket top blind flange (2), forced flow has the hot gas as heat-conducting medium in the described preheating chamber, on described bucket top blind flange (2), evenly offer pipe putting hole (9), be provided with in order to pipe (1) is suspended on the pipe neck chuck (10) in the preheating chamber in the pipe putting hole (9).
2, preheating device for injection, drawing and blowing secondary forming of plastic bottle parison according to claim 1 is characterized in that described preheating chamber is a closed cavity, along heat-preserving container (6) madial wall heat-generating pipe (3) is set, and is provided with in heat-preserving container (6) bottom and rotates fan blade (7)
3, preheating device for injection, drawing and blowing secondary forming of plastic bottle parison according to claim 1, it is characterized in that its heater element of the heat-generating pipe of being confused (3) be the heating wire or the electrothermal tube of evenly arranging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104974 CN1223930A (en) | 1998-01-21 | 1998-01-21 | Preheating device for injection, drawing and blowing secondary forming of plastic bottle parison |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98104974 CN1223930A (en) | 1998-01-21 | 1998-01-21 | Preheating device for injection, drawing and blowing secondary forming of plastic bottle parison |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1223930A true CN1223930A (en) | 1999-07-28 |
Family
ID=5218608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98104974 Pending CN1223930A (en) | 1998-01-21 | 1998-01-21 | Preheating device for injection, drawing and blowing secondary forming of plastic bottle parison |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1223930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070638A (en) * | 2019-12-24 | 2020-04-28 | 武汉合康新能电机有限公司 | Energy-saving and conveying process and system for PET bottle blanks |
-
1998
- 1998-01-21 CN CN 98104974 patent/CN1223930A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070638A (en) * | 2019-12-24 | 2020-04-28 | 武汉合康新能电机有限公司 | Energy-saving and conveying process and system for PET bottle blanks |
| CN111070638B (en) * | 2019-12-24 | 2022-07-08 | 武汉合康新能电机有限公司 | Energy-saving and conveying process and system for PET bottle blanks |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |