CN114379059A - PC plastic extrusion processing method - Google Patents

PC plastic extrusion processing method Download PDF

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Publication number
CN114379059A
CN114379059A CN202111664848.0A CN202111664848A CN114379059A CN 114379059 A CN114379059 A CN 114379059A CN 202111664848 A CN202111664848 A CN 202111664848A CN 114379059 A CN114379059 A CN 114379059A
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CN
China
Prior art keywords
viscosity
temperature
preset
section
gun barrel
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Pending
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CN202111664848.0A
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Chinese (zh)
Inventor
黄锡成
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Shenzhen Enxinlong Special Material Ltd By Share Ltd
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Shenzhen Enxinlong Special Material Ltd By Share Ltd
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Priority to CN202111664848.0A priority Critical patent/CN114379059A/en
Publication of CN114379059A publication Critical patent/CN114379059A/en
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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92695—Viscosity; Melt flow index [MFI]; Molecular weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The embodiment of the invention discloses a PC plastic extrusion processing method, which relates to the technical field of PC plastic processing, and comprises the following steps: acquiring the temperature of the gun barrel, and judging whether the temperature of the gun barrel meets a preset temperature condition or not; if the temperature of the gun barrel meets a preset temperature condition, acquiring the viscosity of the PC material in the gun barrel; judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition or not; if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, the temperature of the gun barrel is adjusted to enable the viscosity of the PC material in the gun barrel to meet the viscosity condition, so that a viscosity control mechanism is added on the basis of temperature control, the flowability of the PC material is controlled more accurately, the flowability fluctuation of the PC material caused by single temperature control is avoided, and the stability of the product performance is improved.

Description

PC plastic extrusion processing method
Technical Field
The invention relates to the technical field of PC plastic processing, in particular to a PC plastic extrusion processing method.
Background
PC is an abbreviation for polycarbonate, and is a high molecular polymer containing carbonate groups in the molecular chain. The extrusion production process flow of the PC plastic is as follows: the production process comprises a feeding process, a drying process, an extrusion process, a forming/shaping process, a braking process, a plate cutting/stacking process and a heat treatment process.
In the extrusion of PC plastic, the temperature has a great influence on the extrusion quality, mainly different temperatures exist, the flowability of PC materials is different, and the poor flowability can cause the uniformity of the materials to be poor, thereby affecting the performance of finished products. In the prior art, temperature is measured by providing a temperature sensor on the barrel of the extruder and is used only as the sole control quantity of the flowability of the extrudate; however, the flowability of PC materials consisting of different groups and different molecular weights at the same temperature is completely different, so that the problem that the flowability of the PC extruded material cannot be accurately controlled by only using the temperature as the only control quantity of the flowability of the extruded material in the prior art so as to cause unstable product performance is solved.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is as follows: the prior art only depends on temperature as the only control quantity of the flowability of the extrudate, and is a problem that the flowability of PC extruded materials cannot be accurately controlled, so that the performance of products is unstable.
In order to solve the above problem, an embodiment of the present invention provides a PC plastic extrusion processing method, where the PC plastic extrusion processing method is applied to a controller in a PC plastic extrusion processing system, the PC plastic extrusion processing system further includes an extruder, the extruder includes a barrel, and the PC plastic extrusion processing method includes:
acquiring the temperature of the gun barrel, and judging whether the temperature of the gun barrel meets a preset temperature condition or not;
if the temperature of the gun barrel meets a preset temperature condition, acquiring the viscosity of the PC material in the gun barrel;
judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition or not;
and if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, adjusting the temperature of the gun barrel so that the viscosity of the PC material in the gun barrel meets the viscosity condition.
The further technical scheme is that the PC plastic extrusion processing method further comprises the following steps:
and if the temperature of the gun barrel does not meet the preset temperature condition, adjusting the temperature of the gun barrel so that the temperature of the gun barrel meets the temperature condition.
The further technical scheme is that the PC plastic extrusion processing method further comprises the following steps:
and if the viscosity of the PC material in the gun barrel meets a preset viscosity condition, keeping the temperature of the gun barrel unchanged.
Its further technical scheme does, the barrel is including the charge section, the melt compression section, homogenization section and the joint that connect gradually, judge whether the temperature of barrel satisfies predetermined temperature condition, include:
judging whether the temperature of the feeding section is in a preset first temperature range or not;
judging whether the temperature of the melting compression section is in a preset second temperature range or not;
judging whether the temperature of the homogenizing section is in a preset third temperature range or not;
judging whether the temperature of the joint is in a preset fourth temperature range or not;
if the temperature of the feeding section is in a preset first temperature range, the temperature of the melting and compressing section is in a preset second temperature range, the temperature of the homogenizing section is in a preset third temperature range, the temperature of the joint is in a preset fourth temperature range, and the temperature of the gun barrel is judged to meet a preset temperature condition.
The further technical scheme is that the judging whether the temperature of the gun barrel meets the preset temperature condition further comprises:
and if the temperature of the charging section is not in a preset first temperature range, or the temperature of the melting and compressing section is not in a preset second temperature range, or the temperature of the homogenizing section is not in a preset third temperature range, or the temperature of the joint is not in a preset fourth temperature range, judging that the temperature of the gun barrel does not meet the preset temperature condition.
The further technical scheme is that the judging whether the viscosity of the PC material in the gun barrel meets the preset viscosity condition comprises the following steps:
judging whether the viscosity of the PC material in the feeding section is in a preset first viscosity range or not;
judging whether the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range or not;
judging whether the viscosity of the PC material in the homogenizing section is in a preset third viscosity range or not;
judging whether the viscosity of the PC material in the joint is in a preset fourth viscosity range or not;
if the viscosity of the PC material in the feeding section is in a preset first viscosity range, the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range, the viscosity of the PC material in the homogenizing section is in a preset third viscosity range, the viscosity of the PC material in the joint is in a preset fourth viscosity range, and the viscosity of the PC material in the gun barrel is judged to meet a preset viscosity condition.
The further technical scheme is that the method for judging whether the viscosity of the PC material in the gun barrel meets the preset viscosity condition further comprises the following steps:
and if the viscosity of the PC material in the feeding section is not in a preset first viscosity range, or the viscosity of the PC material in the melting and compressing section is not in a preset second viscosity range, or the viscosity of the PC material in the homogenizing section is not in a preset third viscosity range, or the viscosity of the PC material in the joint is not in a preset fourth viscosity range, judging that the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition.
The further technical scheme is that the feeding section, the melting and compressing section, the homogenizing section and the joint are all provided with heating devices, and the heating devices are connected with and controlled by the controller.
The further technical scheme is that the feeding section, the melting and compressing section, the homogenizing section and the joint are all provided with temperature sensors, and the temperature sensors are connected with the controller.
The further technical scheme is that the inner wall of the feeding section, the inner wall of the melting and compressing section, the inner wall of the homogenizing section and the inner wall of the joint are provided with viscosity sensors, and the viscosity sensors are connected with the controller.
Compared with the prior art, the embodiment of the invention can achieve the following technical effects:
by applying the technical scheme of the embodiment of the invention, the temperature of the gun barrel is obtained, and whether the temperature of the gun barrel meets the preset temperature condition or not is judged; if the temperature of the gun barrel meets a preset temperature condition, acquiring the viscosity of the PC material in the gun barrel; judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition or not; if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, the temperature of the gun barrel is adjusted to enable the viscosity of the PC material in the gun barrel to meet the viscosity condition, so that a viscosity control mechanism is added on the basis of temperature control, the flowability of the PC material is controlled more accurately, the flowability fluctuation of the PC material caused by single temperature control is avoided, and the stability of the product performance is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a PC plastic extrusion processing method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an extrusion apparatus of a PC plastic extrusion processing system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, wherein like reference numerals represent like elements in the drawings. It is apparent that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
The PC plastic extrusion processing method provided by the embodiment of the invention is applied to a controller in a PC plastic extrusion processing system, and the PC plastic plate extrusion processing system also comprises a barrel, namely the barrel of an extruder. Specifically, the PC plastic extrusion processing method comprises the following steps: S1-S4.
And S1, acquiring the temperature of the gun barrel, and judging whether the temperature of the gun barrel meets a preset temperature condition.
In specific implementation, the temperature of the gun barrel is obtained in real time, and whether the temperature of the gun barrel meets a preset temperature condition is judged.
It should be noted that the temperature condition can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, and grade, etc.) of the PC raw material, and the present invention is not particularly limited.
And if the temperature of the gun barrel does not meet the preset temperature condition, adjusting the temperature of the gun barrel so that the temperature of the gun barrel meets the temperature condition.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an extrusion apparatus of a PC plastic extrusion processing system according to an embodiment of the present invention. As can be seen in fig. 2, the extrusion apparatus comprises a barrel 10. The barrel 10 comprises a sub-connected charging section 11, a melt compression section 12, a homogenization section 13 and a joint 14. The feeding section 11 is used for receiving the PC material and melting the PC material; the melt compression section 12 is used for compressing PC materials; the homogenizing section 13 is used to make the molten PC more uniform, and the joint 14 is used to connect with a mold, and the molten PC is injected into the mold for molding.
At this time, the acquiring of the temperature of the barrel specifically includes acquiring the temperatures of the charging section, the melt compression section, the homogenization section, and the joint, respectively.
In one embodiment, the above step S1 specifically includes the following steps S11-S16.
And S11, judging whether the temperature of the feeding section is in a preset first temperature range.
In specific implementation, whether the temperature of the feeding section is within a preset first temperature range is judged.
It should be noted that the first temperature range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S12, judging whether the temperature of the melting and compressing section is in a preset second temperature range.
In specific implementation, whether the temperature of the melting and compressing section is in a preset second temperature range is judged.
It should be noted that the second temperature range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S13, judging whether the temperature of the homogenizing section is in a preset third temperature range.
In a specific implementation, it is determined whether the temperature of the homogenizing section is within a preset third temperature range.
It should be noted that the third temperature range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S14, judging whether the temperature of the joint is in a preset fourth temperature range.
In specific implementation, whether the temperature of the joint is in a preset fourth temperature range is judged.
It should be noted that the fourth temperature range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
S15, if the temperature of the feeding section is in a preset first temperature range, the temperature of the melting compression section is in a preset second temperature range, the temperature of the homogenizing section is in a preset third temperature range, the temperature of the joint is in a preset fourth temperature range, and the temperature of the gun barrel is judged to meet a preset temperature condition.
In specific implementation, if the temperature of the charging section is in a preset first temperature range, the temperature of the melting and compressing section is in a preset second temperature range, the temperature of the homogenizing section is in a preset third temperature range, and the temperature of the joint is in a preset fourth temperature range, the temperature of the gun barrel is judged to meet a preset temperature condition.
S16, if the temperature of the feeding section is not in a preset first temperature range, or the temperature of the melting and compressing section is not in a preset second temperature range, or the temperature of the homogenizing section is not in a preset third temperature range, or the temperature of the joint is not in a preset fourth temperature range, judging that the temperature of the gun barrel does not meet the preset temperature condition.
In specific implementation, if the temperature of the charging section is not in a preset first temperature range, or the temperature of the melting and compressing section is not in a preset second temperature range, or the temperature of the homogenizing section is not in a preset third temperature range, or the temperature of the joint is not in a preset fourth temperature range, it is determined that the temperature of the gun barrel does not meet a preset temperature condition.
It should be noted that, in the embodiment of the present invention, the temperature of the feeding section < the temperature of the melt compression section < the temperature of the homogenization section < the temperature of the joint; therefore, the temperature of the PC material can be ensured to be gradually increased, so that the local temperature reduction of the PC material in a molten state can be effectively avoided, the layering phenomenon of the PC material can not occur, and the PC product has isotropic performance and more excellent performance.
And S2, if the temperature of the gun barrel meets the preset temperature condition, acquiring the viscosity of the PC material in the gun barrel.
In specific implementation, if the temperature of the gun barrel meets a preset temperature condition, the viscosity of the PC material in the gun barrel is obtained.
After the temperature satisfies the preset temperature condition, the fluidity of the material is further evaluated by the viscosity in the embodiment of the invention. Thus, the viscosity of the PC material in the barrel is further obtained.
Specifically, obtaining the viscosity of the PC material in the barrel comprises: and respectively obtaining the viscosity of the PC material in the feeding section, the viscosity of the PC material in the melting and compressing section, the viscosity of the PC material in the homogenizing section and the viscosity of the PC material in the joint.
And S3, judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition.
In specific implementation, whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition is judged.
It should be noted that the viscosity condition can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, and grade, etc.) of the PC raw material, and the present invention is not particularly limited.
In one embodiment, the above step S3 specifically includes the following steps S31-S36.
And S31, judging whether the viscosity of the PC material in the feeding section is in a preset first viscosity range.
In specific implementation, whether the viscosity of the PC material in the feeding section is within a preset first viscosity range is judged.
It should be noted that the first viscosity range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S32, judging whether the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range.
In specific implementation, whether the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range is judged.
It should be noted that the second viscosity range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S33, judging whether the viscosity of the PC material in the homogenizing section is in a preset third viscosity range.
In specific implementation, whether the viscosity of the PC material in the homogenizing section is in a preset third viscosity range is judged.
It should be noted that the third viscosity range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
And S34, judging whether the viscosity of the PC material in the joint is in a preset fourth viscosity range.
In specific implementation, whether the viscosity of the PC material in the homogenizing section is in a preset fourth viscosity range is judged.
It should be noted that the fourth viscosity range can be determined by those skilled in the art according to the specific conditions (molecular weight, group composition, grade, etc.) of the PC raw material, and the present invention is not particularly limited thereto.
S35, if the viscosity of the PC material in the feeding section is within a preset first viscosity range, the viscosity of the PC material in the melting and compressing section is within a preset second viscosity range, the viscosity of the PC material in the homogenizing section is within a preset third viscosity range, the viscosity of the PC material in the joint is within a preset fourth viscosity range, and the viscosity of the PC material in the gun barrel is judged to meet a preset viscosity condition.
In specific implementation, if the viscosity of the PC material in the charging section is in a preset first viscosity range, the viscosity of the PC material in the melt compression section is in a preset second viscosity range, the viscosity of the PC material in the homogenization section is in a preset third viscosity range, and the viscosity of the PC material in the joint is in a preset fourth viscosity range, it is determined that the viscosity of the PC material in the barrel meets a preset viscosity condition.
S36, if the viscosity of the PC material in the feeding section is not in a preset first viscosity range, or the viscosity of the PC material in the melting and compressing section is not in a preset second viscosity range, or the viscosity of the PC material in the homogenizing section is not in a preset third viscosity range, or the viscosity of the PC material in the joint is not in a preset fourth viscosity range, judging that the viscosity of the PC material in the gun barrel does not meet a preset viscosity condition.
In specific implementation, if the viscosity of the PC material in the charging section is not within a preset first viscosity range, or the viscosity of the PC material in the melt compression section is not within a preset second viscosity range, or the viscosity of the PC material in the homogenization section is not within a preset third viscosity range, or the viscosity of the PC material in the joint is not within a preset fourth viscosity range, it is determined that the viscosity of the PC material in the barrel does not satisfy a preset viscosity condition.
It should be noted that, in the embodiment of the present invention, the temperature of the feeding section < the temperature of the melt compression section < the temperature of the homogenization section < the temperature of the joint; correspondingly, the viscosity of the PC material in the feeding section is less than that of the PC material in the melting and compressing section and less than that of the PC material in the homogenizing section than that of the joint.
Therefore, the temperature of the PC material can be ensured to be gradually increased, the viscosity is gradually reduced, the local temperature reduction of the PC material in a molten state can be effectively avoided, the viscosity is locally thickened, the layering phenomenon of the PC material cannot occur, and the PC product has isotropic performance and more excellent performance.
And S4, if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, adjusting the temperature of the gun barrel so that the viscosity of the PC material in the gun barrel meets the viscosity condition.
In specific implementation, if the viscosity of the PC material in the barrel does not satisfy a preset viscosity condition, the temperature of the barrel is adjusted so that the viscosity of the PC material in the barrel satisfies the viscosity condition.
Specifically, if the viscosity of the feeding section is not satisfied, the temperature of the feeding section is adjusted. And if the viscosity of the melt-compression section is not satisfied, adjusting the temperature of the melt-compression section. If the viscosity of the homogenization section is not satisfied, the temperature of the homogenization section is adjusted. If the viscosity of the joint is not satisfied, the temperature of the joint is adjusted.
The specific temperature condition is that if the viscosity is too low, the temperature is properly raised to reduce the viscosity to meet the requirement. If the viscosity is too high, the temperature is suitably lowered to raise the viscosity to meet the requirements.
And if the viscosity of the PC material in the gun barrel meets a preset viscosity condition, keeping the temperature of the gun barrel unchanged.
By applying the technical scheme of the embodiment of the invention, the temperature of the gun barrel is obtained, and whether the temperature of the gun barrel meets the preset temperature condition or not is judged; if the temperature of the gun barrel meets a preset temperature condition, acquiring the viscosity of the PC material in the gun barrel; judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition or not; if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, the temperature of the gun barrel is adjusted to enable the viscosity of the PC material in the gun barrel to meet the viscosity condition, so that a viscosity control mechanism is added on the basis of temperature control, the flowability of the PC material is controlled more accurately, the flowability fluctuation of the PC material caused by single temperature control is avoided, and the stability of the product performance is improved.
Further, the feeding section, the melting and compressing section, the homogenizing section and the joint are all provided with heating devices, and the heating devices are connected with and controlled by the controller. It will be appreciated that the controller regulates the temperature of the feed section, melt compression section, homogenization section and junction by means of heating means.
Simultaneously, add material section, melt compression section, homogenization section and joint and all be provided with temperature sensor, temperature sensor with the controller is connected. The controller detects the temperature of the feeding section, the melt compression section, the homogenizing section and the joint through temperature sensors.
Simultaneously, the inner wall of the material feeding section, the inner wall of the melting and compressing section, the inner wall of the homogenizing section and the inner wall of the joint are all provided with viscosity sensors, and the viscosity sensors are connected with the controller. The controller detects the temperature of the PC material in the feeding section, the melting and compressing section, the homogenizing section and the joint through the viscosity sensor.
The extrusion production process flow of the PC plastic comprises the following steps: the production process comprises a feeding process, a drying process, an extrusion process, a forming/shaping process, a braking process, a plate cutting/stacking process and a heat treatment process. The main innovation of the present invention is the extrusion process, other processes are well known to those skilled in the art, and the present invention is not particularly limited.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, while the invention has been described with respect to the above-described embodiments, it will be understood that the invention is not limited thereto but may be embodied with various modifications and changes.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The PC plastic extrusion processing method is applied to a controller in a PC plastic extrusion processing system, the PC plastic plate extrusion processing system further comprises an extruder, the extruder comprises a barrel, and the PC plastic extrusion processing method comprises the following steps:
acquiring the temperature of the gun barrel, and judging whether the temperature of the gun barrel meets a preset temperature condition or not;
if the temperature of the gun barrel meets a preset temperature condition, acquiring the viscosity of the PC material in the gun barrel;
judging whether the viscosity of the PC material in the gun barrel meets a preset viscosity condition or not;
and if the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition, adjusting the temperature of the gun barrel so that the viscosity of the PC material in the gun barrel meets the viscosity condition.
2. The PC plastic extrusion processing method of claim 1, further comprising:
and if the temperature of the gun barrel does not meet the preset temperature condition, adjusting the temperature of the gun barrel so that the temperature of the gun barrel meets the temperature condition.
3. The PC plastic extrusion processing method of claim 1, further comprising:
and if the viscosity of the PC material in the gun barrel meets a preset viscosity condition, keeping the temperature of the gun barrel unchanged.
4. The PC plastic extrusion processing method according to claim 1, wherein the barrel comprises a feeding section, a melt compression section, a homogenizing section and a joint which are connected in sequence, and the judging whether the temperature of the barrel meets a preset temperature condition comprises the following steps:
judging whether the temperature of the feeding section is in a preset first temperature range or not;
judging whether the temperature of the melting compression section is in a preset second temperature range or not;
judging whether the temperature of the homogenizing section is in a preset third temperature range or not;
judging whether the temperature of the joint is in a preset fourth temperature range or not;
if the temperature of the feeding section is in a preset first temperature range, the temperature of the melting and compressing section is in a preset second temperature range, the temperature of the homogenizing section is in a preset third temperature range, the temperature of the joint is in a preset fourth temperature range, and the temperature of the gun barrel is judged to meet a preset temperature condition.
5. The PC plastic extrusion processing method according to claim 4, wherein the judging whether the temperature of the barrel meets a preset temperature condition further comprises:
and if the temperature of the charging section is not in a preset first temperature range, or the temperature of the melting and compressing section is not in a preset second temperature range, or the temperature of the homogenizing section is not in a preset third temperature range, or the temperature of the joint is not in a preset fourth temperature range, judging that the temperature of the gun barrel does not meet the preset temperature condition.
6. The PC plastic extrusion processing method according to claim 4, wherein the judging whether the viscosity of the PC material in the barrel meets a preset viscosity condition comprises the following steps:
judging whether the viscosity of the PC material in the feeding section is in a preset first viscosity range or not;
judging whether the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range or not;
judging whether the viscosity of the PC material in the homogenizing section is in a preset third viscosity range or not;
judging whether the viscosity of the PC material in the joint is in a preset fourth viscosity range or not;
if the viscosity of the PC material in the feeding section is in a preset first viscosity range, the viscosity of the PC material in the melting and compressing section is in a preset second viscosity range, the viscosity of the PC material in the homogenizing section is in a preset third viscosity range, the viscosity of the PC material in the joint is in a preset fourth viscosity range, and the viscosity of the PC material in the gun barrel is judged to meet a preset viscosity condition.
7. The PC plastic extrusion processing method of claim 6, wherein the judging whether the viscosity of the PC material in the barrel meets a preset viscosity condition further comprises:
and if the viscosity of the PC material in the feeding section is not in a preset first viscosity range, or the viscosity of the PC material in the melting and compressing section is not in a preset second viscosity range, or the viscosity of the PC material in the homogenizing section is not in a preset third viscosity range, or the viscosity of the PC material in the joint is not in a preset fourth viscosity range, judging that the viscosity of the PC material in the gun barrel does not meet the preset viscosity condition.
8. The PC plastic extrusion processing method of claim 4, wherein the feeding section, the melt compression section, the homogenizing section and the joint are all provided with heating devices, and the heating devices are connected with and controlled by the controller.
9. The PC plastic extrusion processing method of claim 8, wherein the feeding section, the melt compression section, the homogenizing section and the joint are all provided with temperature sensors, and the temperature sensors are connected with the controller.
10. The PC plastic extrusion processing method of claim 9, wherein the inner wall of the feeding section, the inner wall of the melt compression section, the inner wall of the homogenizing section and the inner wall of the joint are provided with viscosity sensors, and the viscosity sensors are connected with the controller.
CN202111664848.0A 2021-12-31 2021-12-31 PC plastic extrusion processing method Pending CN114379059A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040032040A1 (en) * 2002-08-13 2004-02-19 Harris Holton E. Plastics extruder dimension and viscosity control system and method
CN111873358A (en) * 2020-07-22 2020-11-03 深圳市恩欣龙特种材料股份有限公司 Extrusion production process special for PC raw material bar product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040032040A1 (en) * 2002-08-13 2004-02-19 Harris Holton E. Plastics extruder dimension and viscosity control system and method
CN111873358A (en) * 2020-07-22 2020-11-03 深圳市恩欣龙特种材料股份有限公司 Extrusion production process special for PC raw material bar product

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