CN113246513A - Fresh air pipeline and production process thereof - Google Patents
Fresh air pipeline and production process thereof Download PDFInfo
- Publication number
- CN113246513A CN113246513A CN202110551791.7A CN202110551791A CN113246513A CN 113246513 A CN113246513 A CN 113246513A CN 202110551791 A CN202110551791 A CN 202110551791A CN 113246513 A CN113246513 A CN 113246513A
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- China
- Prior art keywords
- steam
- pipeline
- fresh air
- inlet valve
- valve
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/40—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length by gravity, e.g. by casting
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/522—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by spraying, e.g. by flame spraying
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
Abstract
The invention provides a production process of a fresh air pipeline, which is characterized by comprising the following steps: the method comprises the following steps: firstly, manufacturing a mould; secondly, forming a pipeline: A. loading the mold into an injection molding foaming machine, and starting the equipment; B. closing the mold; C. feeding; D. introducing steam into the mold in three steps; E. cooling; F. demolding; and thirdly, synthesizing the mixture by a pipeline. The invention also provides a fresh air pipeline. The invention provides a fresh air pipeline which is light and convenient to install.
Description
Technical Field
The invention relates to the field of manufacturing processes of fresh air pipelines.
Background
The new trend pipeline is the pipeline of using at new trend system, and the pipeline that uses of traditional new trend system generally is PVC pipe, PPR pipe, tubular metal resonator, and is heavier, and is circular pipe basically, because the new trend pipeline generally installs in indoor ceiling, and heavy circular pipeline is unfavorable for the installation, and the noise is big, ventilation effect is not good.
The existing technology is manual gluing and combination, which is easy to glue unevenly, resulting in insecurity, uneven glue and easy overflow, affecting the beauty of the product and the inconvenience of installation.
Disclosure of Invention
The invention provides a fresh air pipeline and a production process thereof, aiming at solving the defects of the prior art and providing a fresh air pipeline which is light and convenient to install.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the production process of the fresh air pipeline is characterized by comprising the following steps:
the method comprises the following steps:
firstly, manufacturing a mould;
secondly, forming a pipeline:
A. loading the mold into an injection molding foaming machine, and starting the equipment;
B. die assembly: preheating the mould to enable the surface temperature of the mould to reach the melting point of PP;
C. feeding: feeding the raw material into a mould through a material gun;
D. introducing steam into the mold in three steps:
(1) steam scouring: the steam is flushed from top to bottom so as to discharge air out of the steam chamber, and the condensed water flows out; in the process, opening an upper steam inlet valve and a lower condensed water discharge valve;
(2) transverse steam: the steam is swept from one side of the steam chamber to the raw material and reaches the other side after penetrating the raw material; at the moment, closing a condensation water valve on one side and opening a steam inlet valve; meanwhile, the steam inlet valve on the opposite surface is closed, and the condensate water valve is opened, so that the steam is sprayed out from the opposite direction;
(3) pressure maintenance: after the steam is transversely introduced, the pressure maintenance or double-sided steam melting process is needed; in the process, a steam inlet valve is opened, and a condensed water discharge valve is closed, so that the pressure gradually reaches a peak value;
E. and (3) cooling: cooling the mold to 70 ℃;
F. demolding: releasing the internal pressure and reducing the temperature to an allowable demoulding temperature to carry out demoulding operation;
three, pipeline synthesis
A. Putting the formed two-petal pipeline into a conveyer belt, and feeding the two-petal pipeline into a glue sprayer;
B. adjusting the position of a glue spraying gun mouth to be matched with a pipeline synthesis mouth, and starting a glue spraying machine;
C. the glue gun of the glue sprayer uniformly sprays glue on the pipeline synthesis port, and the pipeline leaves the glue sprayer along with the conveying belt;
D. and taking out the two sections of pipelines and relatively synthesizing to finish pipeline synthesis.
In the transverse steam step, when the flange is arranged in the mold, steam passes through the periphery of the flange so as to evaporate and melt raw materials clamped in the flange.
Or:
carrying out compression molding on PP by EPP production equipment;
in the forming process, steam is introduced into the die:
(1) steam scouring: the steam is flushed from top to bottom so as to discharge air out of the steam chamber, and the condensed water flows out; in the process, opening an upper steam inlet valve and a lower condensed water discharge valve;
(2) transverse steam: the steam is swept from one side of the steam chamber to the raw material and reaches the other side after penetrating the raw material; at the moment, closing a condensation water valve on one side and opening a steam inlet valve; meanwhile, the steam inlet valve on the opposite surface is closed, and the condensate water valve is opened, so that the steam is sprayed out from the opposite direction;
(3) pressure maintenance: after the steam is transversely introduced, the pressure maintenance or double-sided steam melting process is needed; in the process, a steam inlet valve is opened, and a condensed water discharge valve is closed, so that the pressure gradually reaches a peak value;
and after the molding is finished, demolding the product and part of the core-pulling model together, placing the demolded product on a special tool to separate the product from the core-pulling model, and finishing the separation of the product.
The section of the finished fresh air pipeline is rectangular; the middle in the pipeline is provided with a bearing column; the inner angle of the pipeline is provided with an inner chamfer; the outer wall of the pipeline is provided with a plurality of strip-shaped slots at intervals.
The invention has the advantages that:
the invention adopts the process of introducing steam, so that the product density is reduced, and a portable product is obtained; the outer wall of the pipeline is provided with a plurality of strip-shaped slots at intervals, so that the pipeline is convenient to construct, install and position, and the pipeline cannot slip.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a perspective view of the fresh air duct of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1:
firstly, manufacturing a mould:
the product in the mold is generally two halves of the product, each half has the appearance size of 235mmX51.5mmX1200mm, is divided into a male half and a female half, is convenient to position and synthesize a square pipeline, and a central column is arranged in the middle of the pipeline, so that the pipeline has strong weighing capacity and is not deformed.
Secondly, forming a pipeline:
A. loading the mold into an injection molding foaming machine, and starting the equipment;
B. die assembly: preheating the mould to enable the surface temperature of the mould to reach the melting point of PP;
C. feeding: the feedstock is passed through a lance into a mould.
D. Introducing steam into the mold in three steps:
(1) steam scouring: the steam is flushed from top to bottom to expel air out of the steam chamber and the condensate water out. In the process, the upper steam inlet valve and the lower condensed water discharge valve are opened.
(2) Transverse steam: the steam is swept across the feedstock from one side of the steam chamber, penetrating the feedstock, and reaching the other side. At this time, the condensed water valve on one side is closed, and the steam inlet valve is opened.
At the same time, the steam inlet valve on the opposite side is closed, and the condensate water valve is opened, so that the steam is sprayed out from the opposite direction. If a thin flange is provided in the mould, the steam preferably passes around the flange so that the material trapped within the flange can also be steamed.
(3) Pressure maintenance: after the steam is transversely introduced, a pressure maintaining or double-sided steaming process is needed. In the process, a steam inlet valve is opened, and a condensed water discharge valve is closed, so that the pressure gradually reaches a peak value.
E. And (3) cooling: after the steam has been introduced, the temperature inside the mold will generally reach 140 ℃. To ensure smooth release of the product, the mold temperature must be lowered to 70 ℃.
F. Demolding: the demolding operation can be carried out with the internal pressure released and the temperature reduced to the allowable demolding temperature.
It is particularly noted that, prior to processing the EPP, a steam pressure loading step is required to increase the pressure within the PP starting material pellets to produce lower density molded articles. Because the raw material after the loading can realize the production of various molded parts with different densities.
In addition, the compression load can also reduce the shrinkage amplitude of the molded part after demolding, and the surface effect is better.
In particular, the pressure loading is achieved by vapor gas penetrating the outer walls of the particles, during which the pressure loading can be adjusted by varying the parameters of time, pressure, temperature, etc. After the pressing process, the density of the formed product is reduced.
Three, pipeline synthesis
A. And putting the formed two-petal pipeline into a conveyer belt, and feeding the two-petal pipeline into a glue sprayer.
B. The position of the glue spraying gun mouth is adjusted to be matched with the pipeline synthesis mouth, and the glue spraying machine is started.
C. The glue gun of the glue sprayer uniformly sprays glue on the pipeline synthesis port, and the pipeline leaves the glue sprayer along with the conveying belt.
D. And taking out the two sections of pipelines and relatively synthesizing to finish pipeline synthesis.
The resultant pipe size was 235mmX95mmX1200 mm.
Example 2:
1. the product is subjected to compression molding by EPP special equipment, the pipeline with the pipeline size of 100mmX100mmX1200mm needs a professional mold to be demolded by utilizing a mold core-pulling process, after molding is completed, the product and part of a core-pulling model are demolded together, the demolded product needs to be placed on special equipment to separate the product from a core, and the product is separated until production is completed.
The third pipeline synthesis in example 1 was omitted.
Example 3:
the size of the two-valve pipeline is 235mmX31.5mmX1200mm, the size of the finished product is 235mmX55mmX1200mm, and the other schemes are the same.
As shown in fig. 1:
the section of the finished fresh air pipeline 1 is rectangular, and the finished fresh air pipeline has the effects of light weight, environmental protection, flame retardance, smooth ventilation, noise reduction, convenience in installation, attractiveness and the like. The middle in the pipeline 1 is provided with a bearing column 2 which can bear heavy pressure. The inner angle of the pipeline 1 is provided with an inner chamfer 3, so that smooth ventilation and noise reduction are ensured. The outer wall of the pipeline 1 is provided with a plurality of strip-shaped slots 4 at intervals, so that the pipeline is convenient to construct, install and position, and the pipeline cannot slip.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The production process of the fresh air pipeline is characterized by comprising the following steps:
the method comprises the following steps:
firstly, manufacturing a mould;
secondly, forming a pipeline:
A. loading the mold into an injection molding foaming machine, and starting the equipment;
B. die assembly: preheating the mould to enable the surface temperature of the mould to reach the melting point of PP;
C. feeding: feeding the raw material into a mould through a material gun;
D. introducing steam into the mold in three steps:
(1) steam scouring: the steam is flushed from top to bottom so as to discharge air out of the steam chamber, and the condensed water flows out; in the process, opening an upper steam inlet valve and a lower condensed water discharge valve;
(2) transverse steam: the steam is swept from one side of the steam chamber to the raw material and reaches the other side after penetrating the raw material; at the moment, closing a condensation water valve on one side and opening a steam inlet valve; meanwhile, the steam inlet valve on the opposite surface is closed, and the condensate water valve is opened, so that the steam is sprayed out from the opposite direction;
(3) pressure maintenance: after the steam is transversely introduced, the pressure maintenance or double-sided steam melting process is needed; in the process, a steam inlet valve is opened, and a condensed water discharge valve is closed, so that the pressure gradually reaches a peak value;
E. and (3) cooling: cooling the mold to 70 ℃;
F. demolding: releasing the internal pressure and reducing the temperature to an allowable demoulding temperature to carry out demoulding operation;
three, pipeline synthesis
A. Putting the formed two-petal pipeline into a conveyer belt, and feeding the two-petal pipeline into a glue sprayer;
B. adjusting the position of a glue spraying gun mouth to be matched with a pipeline synthesis mouth, and starting a glue spraying machine;
C. the glue gun of the glue sprayer uniformly sprays glue on the pipeline synthesis port, and the pipeline leaves the glue sprayer along with the conveying belt;
D. and taking out the two sections of pipelines and relatively synthesizing to finish pipeline synthesis.
2. The process for producing a fresh air duct according to claim 1, wherein:
in the transverse steam step, when the flange is arranged in the mold, steam passes through the periphery of the flange so as to evaporate and melt raw materials clamped in the flange.
3. The fresh air duct produced by the process for producing a fresh air duct according to claim 1, wherein: the section of the fresh air pipeline is rectangular; the middle in the pipeline is provided with a bearing column; the inner angle of the pipeline is provided with an inner chamfer; the outer wall of the pipeline is provided with a plurality of strip-shaped slots at intervals.
4. The production process of the fresh air pipeline is characterized by comprising the following steps:
carrying out compression molding on PP by EPP production equipment;
in the forming process, steam is introduced into the die:
(1) steam scouring: the steam is flushed from top to bottom so as to discharge air out of the steam chamber, and the condensed water flows out; in the process, opening an upper steam inlet valve and a lower condensed water discharge valve;
(2) transverse steam: the steam is swept from one side of the steam chamber to the raw material and reaches the other side after penetrating the raw material; at the moment, closing a condensation water valve on one side and opening a steam inlet valve; meanwhile, the steam inlet valve on the opposite surface is closed, and the condensate water valve is opened, so that the steam is sprayed out from the opposite direction;
(3) pressure maintenance: after the steam is transversely introduced, the pressure maintenance or double-sided steam melting process is needed; in the process, a steam inlet valve is opened, and a condensed water discharge valve is closed, so that the pressure gradually reaches a peak value;
and after the molding is finished, demolding the product and part of the core-pulling model together, placing the demolded product on a special tool to separate the product from the core-pulling model, and finishing the separation of the product.
The section of the finished fresh air pipeline is rectangular; the middle in the pipeline is provided with a bearing column; the inner angle of the pipeline is provided with an inner chamfer; the outer wall of the pipeline is provided with a plurality of strip-shaped slots at intervals.
5. The process for producing a fresh air duct according to claim 4, wherein:
in the transverse steam step, when the flange is arranged in the mold, steam passes through the periphery of the flange so as to evaporate and melt raw materials clamped in the flange.
6. The fresh air duct produced by the process of claim 4, wherein: the section of the fresh air pipeline is rectangular; the middle in the pipeline is provided with a bearing column; the inner angle of the pipeline is provided with an inner chamfer; the outer wall of the pipeline is provided with a plurality of strip-shaped slots at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551791.7A CN113246513A (en) | 2021-05-20 | 2021-05-20 | Fresh air pipeline and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110551791.7A CN113246513A (en) | 2021-05-20 | 2021-05-20 | Fresh air pipeline and production process thereof |
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| CN113246513A true CN113246513A (en) | 2021-08-13 |
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| CN202110551791.7A Pending CN113246513A (en) | 2021-05-20 | 2021-05-20 | Fresh air pipeline and production process thereof |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3831600C1 (en) * | 1988-09-17 | 1989-08-10 | Ph. Kurtz Eisenhammer Kg, 6981 Hasloch, De | Process and apparatus for filling thermoplastic foam particles into the cavity of a mould |
| WO1994020568A1 (en) * | 1993-03-11 | 1994-09-15 | Basf Aktiengesellschaft | Thermoplastic polyurethane-based foamed materials |
| DE19637349A1 (en) * | 1995-09-27 | 1997-04-10 | Volkswagen Ag | Foam moulding apparatus |
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| CN105848847A (en) * | 2013-12-23 | 2016-08-10 | 库尔兹股份有限公司 | Device and method for producing particle foam part |
| CN107116177A (en) * | 2017-03-27 | 2017-09-01 | 六安市龙兴汽车零部件有限公司 | A kind of white mould foaming forming technique method of evaporative pattern |
| CN207388145U (en) * | 2017-10-16 | 2018-05-22 | 无锡会通轻质材料股份有限公司 | A kind of energy-efficient heat supply pipeline and EPP mouldings curing chambers |
| CN108582632A (en) * | 2017-12-13 | 2018-09-28 | 苏州富顺新型包装材料股份有限公司 | A kind of production technology of polypropylene product and its application |
| CN109016312A (en) * | 2018-08-08 | 2018-12-18 | 亿源环保包装制品（昆山）有限公司 | A kind of molding method of EPE foam surface skinning |
| CN109016326A (en) * | 2018-08-03 | 2018-12-18 | 合肥艾普科技有限公司 | A kind of EPP molding equipment and technique |
| CN110542154A (en) * | 2018-05-29 | 2019-12-06 | 珠海格力电器股份有限公司 | outdoor pipe connecting structure and air conditioner indoor unit with same |
| CN111761775A (en) * | 2020-06-28 | 2020-10-13 | 四川力登维汽车部件有限公司 | Preparation process of EPP product with high surface hardness |
-
2021
- 2021-05-20 CN CN202110551791.7A patent/CN113246513A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3831600C1 (en) * | 1988-09-17 | 1989-08-10 | Ph. Kurtz Eisenhammer Kg, 6981 Hasloch, De | Process and apparatus for filling thermoplastic foam particles into the cavity of a mould |
| WO1994020568A1 (en) * | 1993-03-11 | 1994-09-15 | Basf Aktiengesellschaft | Thermoplastic polyurethane-based foamed materials |
| DE19637349A1 (en) * | 1995-09-27 | 1997-04-10 | Volkswagen Ag | Foam moulding apparatus |
| CN201818026U (en) * | 2010-10-26 | 2011-05-04 | 谢秀龙 | Light smoke exhaust pipeline |
| CN105848847A (en) * | 2013-12-23 | 2016-08-10 | 库尔兹股份有限公司 | Device and method for producing particle foam part |
| CN107116177A (en) * | 2017-03-27 | 2017-09-01 | 六安市龙兴汽车零部件有限公司 | A kind of white mould foaming forming technique method of evaporative pattern |
| CN207388145U (en) * | 2017-10-16 | 2018-05-22 | 无锡会通轻质材料股份有限公司 | A kind of energy-efficient heat supply pipeline and EPP mouldings curing chambers |
| CN108582632A (en) * | 2017-12-13 | 2018-09-28 | 苏州富顺新型包装材料股份有限公司 | A kind of production technology of polypropylene product and its application |
| CN110542154A (en) * | 2018-05-29 | 2019-12-06 | 珠海格力电器股份有限公司 | outdoor pipe connecting structure and air conditioner indoor unit with same |
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| CN111761775A (en) * | 2020-06-28 | 2020-10-13 | 四川力登维汽车部件有限公司 | Preparation process of EPP product with high surface hardness |
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Application publication date: 20210813 |