CN111361075A - Cold press molding control method and system for high polymer powder material - Google Patents
Cold press molding control method and system for high polymer powder material Download PDFInfo
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- CN111361075A CN111361075A CN201811598510.8A CN201811598510A CN111361075A CN 111361075 A CN111361075 A CN 111361075A CN 201811598510 A CN201811598510 A CN 201811598510A CN 111361075 A CN111361075 A CN 111361075A
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- pressure
- cold press
- press molding
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
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- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a cold press molding control method and a cold press molding control system for a high polymer powder material, wherein the method and the system are applied to cold press molding equipment for the high polymer powder material, and particularly detect the output pressure of a press machine of the cold press molding equipment; acquiring a plurality of groups of set values input by a user and output pressure; and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable cold press molding equipment to perform cold press molding sequentially according to each set of setting values. When the scheme provided by the application is applied to the processing process of polytetrafluoroethylene products, the problems of large density dispersity, more air hole defects, low reliability and the like of final products can be avoided due to the fact that the required pressure and the pressure maintaining time can be effectively controlled.
Description
Technical Field
The application relates to the technical field of polymer material manufacturing, in particular to a cold press molding control method and system for a polymer powder material.
Background
Polytetrafluoroethylene is an artificially synthesized polymer material using fluorine to replace all hydrogen atoms in polyethylene. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Has high light reflectivity, chemical stability and excellent electrical insulation performance.
Polytetrafluoroethylene is widely used as a raw material for producing insulating materials due to good electrical insulating property of polytetrafluoroethylene, and in the cold press molding production process, different influences can be caused on the density and consistency of blank parts by means of pressure application, size, pressure maintaining time and pressure relief of the raw material. Specifically, the pressure and the pressure holding time cannot be effectively controlled in the processing process, so that the final product has the problems of large density dispersibility, many pore defects, low reliability and the like.
Disclosure of Invention
In order to solve the problems, the application provides a cold press molding control method and system for a high polymer powder material.
In order to achieve the above object, the following solutions are proposed:
a cold press molding control method of a high molecular powder material is applied to cold press molding equipment of the high molecular powder material, and comprises the following steps:
detecting the output pressure of a press of the cold press molding equipment;
acquiring a plurality of groups of setting values input by a user and the output pressure;
and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable the cold press molding equipment to perform cold press molding according to each set of setting values in sequence.
Optionally, each set of setting values includes a pressure setting value, a dwell time setting value, and a pressure compensation setting value.
Optionally, the method further includes:
the output pressure is recorded chronologically.
Optionally, the method further includes:
and displaying a pressure curve formed by the output pressure according to time sequence.
A kind of cold press molding control system of the high molecular powder material, apply to the cold press molding apparatus of the high molecular powder material, the said cold press molding control system includes:
the pressure sensing device is used for detecting the output pressure of a press of the cold press molding equipment;
the signal acquisition device is used for acquiring the output pressure and a plurality of groups of setting values input by a user;
and the pressure control module is used for controlling the output of the press machine according to the output pressure and the multiple sets of setting values so as to enable the cold press molding equipment to perform cold press molding according to each set of setting values in sequence.
Optionally, the pressure sensing device comprises a pressure sensor, wherein:
and the pressure sensor is connected with a hydraulic output pipe of the press machine through a three-way valve and is used for outputting the output pressure.
Optionally, each set of setting values includes a pressure setting value, a dwell time setting value, and a pressure compensation setting value.
Optionally, the method further includes:
and the storage control module is used for recording and displaying the output pressure according to a time sequence.
Optionally, the method further includes:
and the display control module is used for displaying the pressure curve formed by the output pressure according to the time sequence.
According to the technical scheme, the application discloses a cold press molding control method and system for the high polymer powder material, and the method and system are applied to cold press molding equipment for the high polymer powder material, and particularly detect the output pressure of a press machine of the cold press molding equipment; acquiring a plurality of groups of set values input by a user and output pressure; and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable cold press molding equipment to perform cold press molding sequentially according to each set of setting values. When the scheme provided by the application is applied to the processing process of polytetrafluoroethylene products, the problems of large density dispersity, more air hole defects, low reliability and the like of final products can be avoided due to the fact that the required pressure and the pressure maintaining time can be effectively controlled.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a control method for cold press molding of a polymer powder material according to an embodiment of the present disclosure;
FIG. 2a is a flow chart of another method for controlling cold press molding of polymer powder material according to an embodiment of the present disclosure;
FIG. 2b is a flow chart of another method for controlling cold press molding of polymer powder material according to an embodiment of the present disclosure;
FIG. 2c is a flow chart of another method for controlling cold press molding of polymer powder material according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a pressure sensor assembly according to an embodiment of the present disclosure;
FIG. 4 is a block diagram of a control system for cold press molding of polymer powder material according to an embodiment of the present disclosure;
FIG. 5a is a block diagram of another exemplary system for controlling cold press molding of polymer powder material according to an embodiment of the present disclosure;
FIG. 5b is a block diagram of another exemplary system for controlling cold press molding of polymer powder material according to an embodiment of the present disclosure;
fig. 5c is a block diagram of another control system for cold press molding of polymer powder material according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
Example one
Fig. 1 is a flowchart of a method for controlling cold press molding of a polymer powder material according to an embodiment of the present disclosure.
As shown in fig. 1, the cold press molding control method provided in this embodiment is applied to a cold press molding apparatus for performing cold press molding on a polymer powder material, such as polytetrafluoroethylene powder, the apparatus includes a press for providing a molding pressure, and the cold press molding control method specifically includes the following steps:
and S1, detecting the output pressure output by the press.
The press machine is a cold press molding device for outputting hydraulic driving force to a hydraulic component, and is connected with the hydraulic component through a hydraulic pipeline. Here, the output pressure is detected by detecting the pressure of the hydraulic oil in the hydraulic line.
And S2, acquiring the output pressure and a plurality of sets of setting values.
Specifically, the output pressure output by a pressure sensor for detecting the output pressure is received, and a plurality of sets of set values input by a user are also received, wherein the set values specifically comprise a pressure set value, a dwell time set value and a pressure compensation set value.
The pressure set value is the pressure required by the cold-press molding of a specific product, and the dwell time set value is the time required to be kept when the output pressure reaches the pressure set value; the pressure compensation set value is a pressure value of the output pressure that needs to be increased in order to ensure that the pressure set value is maintained for the elapsed dwell time.
And S3, controlling the operation of the press according to the output pressure and the multiple sets of set values.
Specifically, on the basis of a plurality of sets of set values set before starting, such as a pressure set value, a dwell time set value and a pressure supplementing set value, when the press starts to work after starting, the pressure is output by a time detector, the press is controlled to work according to the first set of set values, specifically, the output pressure is compared with the pressure set value of the first set of set values, the output pressure is kept when the output pressure reaches the pressure set value of the first set value, the dwell time reflected by the dwell time set value is continued, and the output pressure is subjected to pressure supplementing operation according to the pressure supplementing set value of the first set value in the period;
after the first round of operation is finished, controlling the press machine to work according to a second set of set values, specifically comparing the output pressure with the pressure set values of the second set of set values, keeping the output pressure when the output pressure reaches the pressure set values of the second set of set values, continuing the pressure maintaining time reflected by the pressure maintaining time set values, and performing pressure supplementing operation on the output pressure according to the pressure supplementing set values of the second set of set values in the period;
and in the whole working process, the operation is repeated until the operation according to all the group setting values is finished.
According to the technical scheme, the embodiment provides the control method for the cold press molding of the high polymer powder material, and the method is applied to the cold press molding equipment of the high polymer powder material, and particularly detects the output pressure of a press of the cold press molding equipment; acquiring a plurality of groups of set values input by a user and output pressure; and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable cold press molding equipment to perform cold press molding sequentially according to each set of setting values. When the scheme provided by the application is applied to the processing process of polytetrafluoroethylene products, the problems of large density dispersity, more air hole defects, low reliability and the like of final products can be avoided due to the fact that the required pressure and the pressure maintaining time can be effectively controlled.
In addition, as shown in fig. 2a, fig. 2b or fig. 2c, the present embodiment further includes the following steps, which are in an alternative relationship or exist simultaneously:
and S4, recording the output pressure in time sequence.
I.e. the detected output pressure is semantically recorded by the corresponding storage medium for subsequent analysis. Each set of settings is recorded at the same time as the output pressure is recorded.
And S5, displaying the output pressure according to the time sequence.
Namely, corresponding output pressure is displayed on site in the form of a pressure curve according to the time sequence so as to be viewed on site by monitoring personnel.
Example two
Fig. 3 is a block diagram of a control system for cold press molding of polymer powder material according to an embodiment of the present disclosure.
As shown in fig. 3, the cold press molding control system provided by this embodiment is applied to a cold press molding device for performing cold press molding on a polymer powder material, such as polytetrafluoroethylene powder, and the device includes a press for providing molding pressure, and the cold press molding control system specifically includes a pressure sensing device 10, a signal acquisition device 20, and a pressure control module 30.
The pressure sensing device is used for detecting the output pressure output by the press machine.
The press machine is a cold press molding device for outputting hydraulic driving force to a hydraulic component, and is connected with the hydraulic component through a hydraulic pipeline. Here, the output pressure is detected by detecting the pressure of the hydraulic oil in the hydraulic line.
Specifically, as shown in FIG. 4, the pressure sensing device includes at least one pressure sensor 100 connected to the output line of the hydraulic machine by a three-way valve 200.
The signal acquisition device specifically comprises an acquisition card and a tablet computer, wherein the acquisition card is used for acquiring the output pressure output by the pressure sensor, and the tablet computer is used for receiving a plurality of groups of setting values input by a user.
Specifically, the output pressure output by a pressure sensor for detecting the output pressure is received, and a plurality of sets of set values input by a user are also received, wherein the set values specifically comprise a pressure set value, a dwell time set value and a pressure compensation set value.
The pressure set value is the pressure required by the cold-press molding of a specific product, and the dwell time set value is the time required to be kept when the output pressure reaches the pressure set value; the pressure compensation set value is a pressure value of the output pressure that needs to be increased in order to ensure that the pressure set value is maintained for the elapsed dwell time.
The pressure control module is used for controlling the operation of the press according to the output pressure and the plurality of sets of set values, and can be understood as a control terminal or control software installed in the tablet computer.
The method is specifically used for outputting pressure by a time detector during the process that a press starts to work after starting on the basis of a plurality of groups of set values set before starting, such as a pressure set value, a dwell time set value and a pressure supplement set value, and controlling the work of the press according to the first group of set values, specifically comparing the output pressure with the pressure set value of the first group of set values, keeping the output pressure when the output pressure reaches the pressure set value of the first group of set values, continuing the dwell time reflected by the dwell time set value, and performing pressure supplement operation on the output pressure according to the pressure supplement set value of the first group of set values during the period;
after the first round of operation is finished, controlling the press machine to work according to a second set of set values, specifically comparing the output pressure with the pressure set values of the second set of set values, keeping the output pressure when the output pressure reaches the pressure set values of the second set of set values, continuing the pressure maintaining time reflected by the pressure maintaining time set values, and performing pressure supplementing operation on the output pressure according to the pressure supplementing set values of the second set of set values in the period;
and in the whole working process, the operation is repeated until the operation according to all the group setting values is finished.
According to the technical scheme, the embodiment provides the cold press molding control system for the high polymer powder material, and the system is applied to the cold press molding equipment for the high polymer powder material, and particularly detects the output pressure of a press machine of the cold press molding equipment; acquiring a plurality of groups of set values input by a user and output pressure; and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable cold press molding equipment to perform cold press molding sequentially according to each set of setting values. When the scheme provided by the application is applied to the processing process of polytetrafluoroethylene products, the problems of large density dispersity, more air hole defects, low reliability and the like of final products can be avoided due to the fact that the required pressure and the pressure maintaining time can be effectively controlled.
In addition, as shown in fig. 5a, 5b or 5c, the present embodiment further includes a storage control module 40 and a display control module 50, and these two operation modules are in an alternative relationship or exist at the same time.
The storage control module is used for recording the output pressure according to the time sequence.
I.e. the detected output pressure is semantically recorded by the corresponding storage medium for subsequent analysis.
The display control module is used for displaying the output pressure according to the time sequence.
Namely, corresponding output pressure is displayed on site in the form of a pressure curve according to the time sequence so as to be viewed on site by monitoring personnel.
The embodiments in the present specification 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.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The technical solutions provided by the present application are introduced in detail, and specific examples are applied in the description to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A cold press molding control method of a high molecular powder material is applied to cold press molding equipment of the high molecular powder material, and is characterized by comprising the following steps:
detecting the output pressure of a press of the cold press molding equipment;
acquiring a plurality of groups of setting values input by a user and the output pressure;
and controlling the output of the press according to the output pressure and the multiple sets of setting values so as to enable the cold press molding equipment to perform cold press molding according to each set of setting values in sequence.
2. The cold press forming control method of claim 1, wherein each set of settings comprises a pressure setting, a dwell time setting, and a pressure supplement setting.
3. The cold press forming control method of claim 1, further comprising:
the output pressure is recorded chronologically.
4. The cold press forming control method of claim 1, further comprising:
and displaying a pressure curve formed by the output pressure according to time sequence.
5. A cold press molding control system of a high molecular powder material is applied to cold press molding equipment of the high molecular powder material, and is characterized by comprising:
the pressure sensing device is used for detecting the output pressure of a press of the cold press molding equipment;
the signal acquisition device is used for acquiring the output pressure and a plurality of groups of setting values input by a user;
and the pressure control module is used for controlling the output of the press machine according to the output pressure and the multiple sets of setting values so as to enable the cold press molding equipment to perform cold press molding according to each set of setting values in sequence.
6. The cold press forming control system of claim 5, wherein said pressure sensing device comprises a pressure sensor, wherein:
and the pressure sensor is connected with a hydraulic output pipe of the press machine through a three-way valve and is used for outputting the output pressure.
7. The cold press forming control device of claim 5, wherein each set of settings comprises a pressure setting, a dwell time setting, and a pressure supplement setting.
8. The cold press forming control apparatus of claim 5, further comprising:
and the storage control module is used for recording and displaying the output pressure according to a time sequence.
9. The cold press forming control apparatus of claim 5, further comprising: and the display control module is used for displaying the pressure curve formed by the output pressure according to the time sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598510.8A CN111361075A (en) | 2018-12-26 | 2018-12-26 | Cold press molding control method and system for high polymer powder material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811598510.8A CN111361075A (en) | 2018-12-26 | 2018-12-26 | Cold press molding control method and system for high polymer powder material |
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| CN111361075A true CN111361075A (en) | 2020-07-03 |
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| CN201811598510.8A Pending CN111361075A (en) | 2018-12-26 | 2018-12-26 | Cold press molding control method and system for high polymer powder material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675764A (en) * | 2015-03-16 | 2015-06-03 | 中国工程物理研究院化工材料研究所 | Pressurizing and pressure-maintaining pressure curve control method of hydraulic machine |
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2018
- 2018-12-26 CN CN201811598510.8A patent/CN111361075A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675764A (en) * | 2015-03-16 | 2015-06-03 | 中国工程物理研究院化工材料研究所 | Pressurizing and pressure-maintaining pressure curve control method of hydraulic machine |
Non-Patent Citations (2)
| Title |
|---|
| 董祥忠 等: "《现代塑料成型工程》", 30 September 2009, 国防工业出版社 * |
| 西安仪表厂工人技术学校 编: "《机械仪表工艺学》", 31 January 1962, 中国工业出版社 * |
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