CN112060451A - Method for designing mould pressing mould for manufacturing composite material product - Google Patents
Method for designing mould pressing mould for manufacturing composite material product Download PDFInfo
- Publication number
- CN112060451A CN112060451A CN202010822648.2A CN202010822648A CN112060451A CN 112060451 A CN112060451 A CN 112060451A CN 202010822648 A CN202010822648 A CN 202010822648A CN 112060451 A CN112060451 A CN 112060451A
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- Prior art keywords
- oil
- temperature
- die
- temperature control
- mould
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 title abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000003921 oil Substances 0.000 claims description 119
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000010724 circulating oil Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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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
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3835—Designing moulds, e.g. using CAD-CAM
-
- 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
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- 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
- B29C2043/5816—Measuring, controlling or regulating temperature
Abstract
The invention discloses a method for designing a mould pressing mould for manufacturing a composite material product, which comprises the following steps: the mould pressing machine is designed to be in a reciprocating structure, a group of moulds are arranged at two ends of the workbench, a plurality of temperature control areas are divided from the inner cavity of each mould, and temperature control pipelines are embedded in the temperature control areas; the die is provided with a plurality of oil interfaces which are communicated through a pipeline embedded in the die to form a group of oil guide passages, the temperature and the flow of oil in oil passages are controlled through an oil temperature machine, the temperature of the die is accurately controlled, hot oil and cooling oil are circulated in die oil passages at two ends of a workbench, and a heat exchanger is communicated between the two die oil passages. Through the inside oil circuit accurate control mould temperature of mould, improve the machining precision, when one set of mould adds heat pressurization on a table surface, another set of mould cools off on another table surface, has realized going on with cooling in step heating in the product manufacturing process, raises the efficiency, reduce cost, the automated production of being convenient for.
Description
Technical Field
The invention relates to the technical field of composite material products, in particular to a method for designing a die pressing die for manufacturing a composite material product.
Background
The traditional mould pressing mould design only designs a mould cavity and male and female mould kernels according to the product modeling, the heating and cooling method is to utilize a heating bedplate and a cooling bedplate of a press, the mould needs to be moved back and forth, the production efficiency is relatively low, the labor intensity of workers is high, the working safety is low, the automatic operation is difficult to realize, the mould temperature is that the bedplate conducts heat through a template, the temperature accuracy is poor, the error is large when a precise product is made, and the product performance is easy to be unstable.
Disclosure of Invention
The present invention is directed to a method for designing a molding die for manufacturing a composite material product, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method of designing a compression mold for use in making a composite article, comprising the steps of:
s1, designing the die press to be a reciprocating structure through a motor lead screw mechanism, and arranging a group of dies at two ends of a workbench;
s2, dividing the inner cavity of the mold into a plurality of temperature control areas, and embedding a temperature control pipeline in each temperature control area mold;
s3, arranging a plurality of oil interfaces on the die, wherein every two oil interfaces are communicated through a pipeline embedded in the die to form a group of oil guide passages, and the plurality of groups of oil guide passages are connected in series through oil pipes externally arranged on the corresponding oil interfaces and connected with a die temperature controller to form an oil circuit circulation;
s4, detecting the temperature of the temperature control area, the oil inlet temperature of the oil guide passage of the temperature control area and the oil return temperature, so that the temperature and the flow of oil in the oil passage are controlled through the oil temperature controller, and the temperature of the die is accurately controlled;
s5, hot oil and cooling oil flow through the die oil passages at two ends of the workbench, and a heat exchanger is communicated between the two die oil passages.
In a preferred embodiment, in step S2, the pipes embedded in the mold all form an S-shaped structure along the axial direction of the inner cavity of the mold, and the area of the temperature control area and the length of the pipes are calculated by heat transfer oil and the specific heat capacity of the mold material, that is, by thermal radiation distribution analysis.
In a preferred embodiment, in step S3, the oil ports are symmetrically distributed on two sides of the mold, the oil ports are perpendicular to the cavity of the mold, the oil ports are respectively provided with an electromagnetic valve, the opening and closing of the oil ports are controlled by the electromagnetic valves, the flow rate of the heat transfer oil in the oil path is controlled, and the number of the oil guide passages is controlled by the electromagnetic valves to change the coverage area of the temperature control area, so as to adjust the temperature of the temperature control area.
In a preferred embodiment, in step S4, the height of the cavity in the temperature-controlled area is H, the area of the cavity in the temperature-controlled area is S, the temperature of the oil path at the temperature-controlled area is T, and the flow rate is Q, and the relationship between the oil paths at different temperature-controlled areas in the mold is (T1 × Q1)/(T2 × Q2) = (H1 × S1)/(H2 × S2), and the temperature of the cavity in the mold is controlled by controlling the oil temperature and the flow rate in the oil path, so that the cavities in different depths and sizes are synchronously heated and cooled, the temperature of the product is uniform, and deformation is avoided.
In a preferred embodiment, in step S5, a reversing valve is installed at a connection between the heat exchanger and the oil paths of the two molds, and when the molds are alternately heated and cooled by the reversing valve, the cooling oil cools the molded product and preheats the heating oil by the heat exchanger, thereby saving the heating energy consumption of the heating oil during the production of the other set of molds.
In a preferred embodiment, the oil paths are all connected with a circulating oil supply pump, a thermocouple and an automatic temperature control instrument to form a temperature control device.
Compared with the prior art, the invention has the beneficial effects that:
1. the special oil temperature machine is utilized to realize cold and hot alternate circulation in the die, and the oil temperature and the flow in the oil way are controlled by the relation of the oil ways among different temperature control areas in the die, so that the temperature of the inner cavity of the die is controlled, and the synchronous temperature rise and the temperature drop of cavities with different depths and sizes are facilitated;
2. the die can be fixed on special pressing machine equipment, the labor intensity of workers is greatly reduced, and the working safety is high;
3. two lower working table surfaces can reciprocate back and forth, and a system is designed to realize that one set of die is heated and pressurized on one working table surface and the other set of die is cooled on the other working table surface at the same time, so that the heating and cooling are synchronously carried out in the product manufacturing process, the efficiency is doubled, the production cost is reduced, and one-key automatic production is realized;
4. the dies at the two ends of the workbench are heated by the cooling oil through the heat exchanger, and the waste heat of the cooled formed product is used for preheating the heating oil, so that the heating oil consumption is reduced when the other group of dies are produced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 invention.
The invention provides a technical scheme that: a method for designing a molding die for manufacturing a composite material article, comprising the steps of:
s1, the die press is designed to be of a reciprocating structure through a motor lead screw mechanism, a group of dies are arranged at two ends of a workbench and fixed on special press equipment, so that the labor intensity of workers is greatly reduced, and the working safety is high;
s2, dividing the inner cavity of the mold into a plurality of temperature control areas, and embedding a temperature control pipeline in each temperature control area mold;
s3, arranging a plurality of oil interfaces on the die, wherein every two oil interfaces are communicated through a pipeline embedded in the die to form a group of oil guide passages, and the plurality of groups of oil guide passages are connected in series through oil pipes externally arranged on the corresponding oil interfaces and connected with a die temperature controller to form an oil circuit circulation;
s4, detecting the temperature of the temperature control area, the oil inlet temperature of the oil guide passage of the temperature control area and the oil return temperature, controlling the oil temperature and the flow in the oil passage through the oil temperature controller, and accurately controlling the temperature of the die;
s5, hot oil and cooling oil are circulated in the die oil ways at the two ends of the workbench, a heat exchanger is communicated between the two die oil ways, special pressing machine equipment is used, two working lower table boards can reciprocate back and forth, and a system is designed to realize that one set of die is heated and pressurized on one working table board and the other set of die is cooled on the other working table board; the heating and cooling are synchronously carried out in the product manufacturing process, the efficiency is doubled, the production cost is reduced, and one-key automatic production is realized.
Further, in step S2, the embedded pipeline of mould all becomes the S structure along the mould inner chamber axial, and control by temperature change district area and pipeline length pass through conduction oil and mould material specific heat capacity and calculate, calculates through thermal radiation distribution analysis promptly, is convenient for supply oil pipe way along control by temperature change district evenly distributed for the control by temperature change district is heated evenly.
Further, in step S3, the oil ports are symmetrically distributed on both sides of the mold, the oil ports are perpendicular to the cavity of the mold, the oil ports are all provided with electromagnetic valves, the opening and closing of the oil ports are controlled by the electromagnetic valves, the flow rate of the heat transfer oil in the oil path is controlled, and the number of oil guide passages is controlled by the electromagnetic valves to change the coverage area of the temperature control area, thereby adjusting the temperature of the temperature control area.
Further, in step S4, the height of the cavity in the temperature control area is H, the area of the cavity in the temperature control area is S, the temperature of the oil path in the temperature control area is T, and the flow rate is Q, and the relationship between the oil paths in different temperature control areas in the mold is (T1 × Q1)/(T2 × Q2) = (H1 × S1)/(H2 × S2), and the temperature of the cavity in different depths and sizes is controlled by controlling the oil temperature and the flow rate in the oil path, so that the temperature of the cavity in the mold is synchronously raised and lowered, the temperature of the product is uniform, and deformation is avoided.
In the step S5, a reversing valve is installed at the joint of the heat exchanger and the two die oil ways, when the dies are alternately heated and cooled through the reversing valve, the cooling oil cools the formed product, and the heating oil is preheated through the heat exchanger, so that the heating energy consumption of the heating oil during the production of the other group of dies is saved.
Furthermore, the oil paths are all connected with a circulating oil supply pump, a thermocouple and an automatic temperature control instrument to form a temperature control device.
In conclusion, an oil supply pipeline is arranged in the die, a die template is analyzed and calculated according to heat radiation distribution, then pipelines with certain pipe diameter and distance are opened, then blockage and dredging design is carried out, S-shaped circulation communication is formed on the pipelines, cold and hot alternate circulation in the die is realized by utilizing a special oil temperature machine, the oil temperature and the flow in an oil way are controlled in an oil way relation mode through oil ways between different temperature control areas in the die, so that the temperature of an inner cavity of the die is controlled, cavities with different depths and sizes are heated and cooled synchronously, the accuracy degree of the temperature of the die is very high, the performance stability and precision of a product are well ensured, two working lower table surfaces can reciprocate back and forth, and a design system realizes that one set of die is heated and pressurized on one working table surface while the other set of die is cooled on the other working table; the heating and cooling are synchronously carried out in the product manufacturing process, the efficiency is doubled, the production cost is reduced, one-key automatic production is realized, the residual heat of the cooling oil after the cooling of the formed product is preheated for the heating oil through the heat exchanger between the two dies, and the heating energy consumption of the heating oil during the production of the other group of dies is saved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method of designing a compression mold for use in making a composite article, comprising the steps of:
s1, designing the die press to be a reciprocating structure through a motor lead screw mechanism, and arranging a group of dies at two ends of a workbench;
s2, dividing the inner cavity of the mold into a plurality of temperature control areas, and embedding a temperature control pipeline in each temperature control area mold;
s3, arranging a plurality of oil interfaces on the die, wherein every two oil interfaces are communicated through a pipeline embedded in the die to form a group of oil guide passages, and the plurality of groups of oil guide passages are connected in series through oil pipes externally arranged on the corresponding oil interfaces and connected with a die temperature controller to form an oil circuit circulation;
s4, detecting the temperature of the temperature control area, the oil inlet temperature of the oil guide passage of the temperature control area and the oil return temperature, so that the temperature and the flow of oil in the oil passage are controlled through the oil temperature controller, and the temperature of the die is accurately controlled;
s5, hot oil and cooling oil flow through the die oil passages at two ends of the workbench, and a heat exchanger is communicated between the two die oil passages.
2. A method of designing a compression mould for use in the manufacture of composite articles according to claim 1, wherein: in the step S2, the pipelines embedded in the mold are all in an S structure along the axial direction of the inner cavity of the mold, and the area of the temperature control area and the length of the pipelines are calculated through heat conduction oil and the specific heat capacity of the mold material, namely through heat radiation distribution analysis calculation.
3. A method of designing a compression mould for use in the manufacture of composite articles according to claim 1, wherein: in step S3, the oil ports are symmetrically distributed on both sides of the mold, the oil ports are perpendicular to the cavity of the mold, the oil ports are all provided with electromagnetic valves, the opening and closing of the oil ports are controlled by the electromagnetic valves, the flow rate of the heat transfer oil in the oil path is controlled, and the number of oil guide passages is controlled by the electromagnetic valves to change the coverage area of the temperature control area, thereby adjusting the temperature of the temperature control area.
4. A method of designing a compression mould for use in the manufacture of composite articles according to claim 1, wherein: in step S4, the height of the cavity in the temperature control area is H, the area of the cavity in the temperature control area is S, the temperature of the oil path in the temperature control area is T, and the flow rate is Q, and the relationship of the oil path between different temperature control areas in the mold is (T1 × Q1)/(T2 × Q2) = (H1 × S1)/(H2 × S2), and the temperature of the cavity in the mold is controlled by controlling the oil temperature and the flow rate in the oil path, so that the cavities in different depths and sizes are synchronously heated and cooled, the temperature of the product is uniform, and deformation is avoided.
5. A method of designing a compression mould for use in the manufacture of composite articles according to claim 1, wherein: in the step S5, a reversing valve is installed at the joint of the heat exchanger and the two die oil ways, when the dies are alternately heated and cooled through the reversing valve, the cooling oil cools the formed product, and the heating oil is preheated through the heat exchanger, so that the heating energy consumption of the heating oil during the production of the other group of dies is saved.
6. A method of designing a compression mould for use in the manufacture of composite articles according to claim 1, wherein: the oil paths are all connected with a circulating oil supply pump, a thermocouple and an automatic temperature control instrument to form a temperature control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822648.2A CN112060451A (en) | 2020-08-17 | 2020-08-17 | Method for designing mould pressing mould for manufacturing composite material product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822648.2A CN112060451A (en) | 2020-08-17 | 2020-08-17 | Method for designing mould pressing mould for manufacturing composite material product |
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| Publication Number | Publication Date |
|---|---|
| CN112060451A true CN112060451A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010822648.2A Pending CN112060451A (en) | 2020-08-17 | 2020-08-17 | Method for designing mould pressing mould for manufacturing composite material product |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756017A (en) * | 1995-09-08 | 1998-05-26 | Sumitomo Chemical Company, Limited | Method of simulating resin behavior in press molding |
| CN1200976A (en) * | 1997-05-16 | 1998-12-09 | 欧文斯-伊利诺伊封闭物有限公司 | Method for making compression-moulded plastic products and apparatus thereof |
| CN103736965A (en) * | 2013-12-31 | 2014-04-23 | 广州市型腔模具制造有限公司 | Temperature control method for magnesium alloy pressure casing die |
| CN203697335U (en) * | 2014-01-26 | 2014-07-09 | 株洲海天工程塑料实业有限公司 | Continuous centrifugal casting production device for MC nylon |
| CN104747409A (en) * | 2013-12-31 | 2015-07-01 | 余良军 | System and method for recycling waste heat of air compressor and heating etching chemical liquid by using waste heat |
-
2020
- 2020-08-17 CN CN202010822648.2A patent/CN112060451A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756017A (en) * | 1995-09-08 | 1998-05-26 | Sumitomo Chemical Company, Limited | Method of simulating resin behavior in press molding |
| CN1200976A (en) * | 1997-05-16 | 1998-12-09 | 欧文斯-伊利诺伊封闭物有限公司 | Method for making compression-moulded plastic products and apparatus thereof |
| CN103736965A (en) * | 2013-12-31 | 2014-04-23 | 广州市型腔模具制造有限公司 | Temperature control method for magnesium alloy pressure casing die |
| CN104747409A (en) * | 2013-12-31 | 2015-07-01 | 余良军 | System and method for recycling waste heat of air compressor and heating etching chemical liquid by using waste heat |
| CN203697335U (en) * | 2014-01-26 | 2014-07-09 | 株洲海天工程塑料实业有限公司 | Continuous centrifugal casting production device for MC nylon |
Non-Patent Citations (1)
| Title |
|---|
| 温志远: "《塑料成型工艺及设备》", 28 February 2007, 北京理工大学出版社 * |
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Application publication date: 20201211 |