CN115972470A - Glass fiber reinforced plastic valve rod compression molding die and method - Google Patents
Glass fiber reinforced plastic valve rod compression molding die and method Download PDFInfo
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- CN115972470A CN115972470A CN202211658132.4A CN202211658132A CN115972470A CN 115972470 A CN115972470 A CN 115972470A CN 202211658132 A CN202211658132 A CN 202211658132A CN 115972470 A CN115972470 A CN 115972470A
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000748 compression moulding Methods 0.000 title claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 49
- 238000001816 cooling Methods 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 239000012778 molding material Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000005007 epoxy-phenolic resin Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008646 thermal stress Effects 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000013037 co-molding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a glass fiber reinforced plastic valve stem compression molding die, which comprises an upper die and a lower die; a plug extends out of the center of the bottom of the upper die; the upper die is arranged at the top of the lower die; a forming cavity for storing raw materials is formed in the lower die, and a plug of the upper die extends into an upper port of the forming cavity to seal the upper port of the forming cavity; the lower part of the forming cavity is provided with an ejector rod, the upper port of the ejector rod is provided with a groove for forming the tail part of the valve rod, and the lower end of the ejector rod extends out of the lower bottom plate. The invention also provides a valve rod molding method. The invention has the beneficial effects that: the die has the advantages that the structure is simplified, the using steps of the die are few, the produced valve rod is uniformly heated, and the valve rod is not easy to deform due to the thermal stress generated inside; the valve rod made of the glass fiber reinforced plastic can be used in strong acid and strong base media, and has higher strength.
Description
Technical Field
The invention relates to the field of production of composite material equipment, in particular to a compression molding die and a compression molding method for a glass fiber reinforced plastic valve rod.
Background
The valve is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and is widely applied to the industries of petroleum, chemical engineering, papermaking, steel and the like. The valve rod is used as a main driving medium of the valve, the upper end of the valve rod is connected with the handle, and the lower end of the valve rod drives the valve ball to rotate to realize the opening, closing and flow control of the valve.
At present, a metal valve rod is mostly adopted in the valve, and the corrosion resistance of the valve rod is improved by methods such as spraying a protective film and the like, but the effect is still not optimistic. The related valve rod mold has the advantages of complex structure, complex parts, high processing requirements, multiple use procedures, nonuniform mold heating, easy breakage of the produced valve rod and short torsion resistance service life.
The Glass Fiber Reinforced Plastic (GFRP) is prepared from glass fibers and resin through a compounding process, has high mechanical property and high corrosion resistance, and parts made of the GFRP are low in cost, more suitable for corrosive environments and good in mechanical property. However, at present, no production method for the glass fiber reinforced plastic valve rod with strong acid and strong alkali resistance exists.
Disclosure of Invention
The invention aims to provide a compression molding die and a compression molding method for a glass fiber reinforced plastic valve rod, which can efficiently produce the glass fiber reinforced plastic valve rod, aiming at the defects of the prior art.
The technical scheme adopted by the invention is as follows: a glass fiber reinforced plastic valve stem compression molding die comprises an upper die and a lower die; a plug extends out of the center of the bottom of the upper mold; the upper die is arranged at the top of the lower die; a forming cavity for storing raw materials is formed in the lower die, and a plug of the upper die extends into an upper port of the forming cavity to seal the upper port of the forming cavity; the lower part of the forming cavity is provided with an ejector rod, the upper port of the ejector rod is provided with a groove for forming the tail part of the valve rod, and the lower end of the ejector rod extends out of the lower bottom plate.
According to the scheme, the upper die comprises an upper top plate and an upper die body, wherein the upper top plate is arranged at the top of the upper die body; the upper top plate is connected with the hydraulic equipment through bolts.
According to the scheme, the lower die comprises a lower bottom plate and a lower die body, and the lower bottom plate is connected with hydraulic equipment through bolts; the lower bottom plate is arranged at the bottom of the lower die body and is connected with the lower die body through a bolt; the forming cavity is arranged in the lower die body.
According to the scheme, four corners of the bottom of the upper die body are respectively provided with a guide block; four corners of the top of the lower die body are respectively provided with a concave platform matched with the guide block. When the installation, the guide block is clamped into the corresponding concave table.
According to the scheme, the inner side of the guide block is provided with the guide inclined plane, and the bottom of the inner side of the guide block is provided with the chamfer.
According to the scheme, a transverse or longitudinal first heating channel is formed in the upper die body; and a transverse or longitudinal second heating channel is formed in the lower die body.
According to the scheme, the lower die body is also internally provided with a first transverse or longitudinal cooling channel and a second longitudinal cooling channel, and the first cooling channel and the second cooling channel are respectively arranged on the upper side and the lower side of the second heating channel.
According to the scheme, the first heating channel, the second heating channel, the first cooling channel and the second cooling channel are all U-shaped channels, and the forming cavity is located in an opening of the U-shaped channels.
According to the scheme, the temperature sensor is arranged on the outer surface of the lower die body.
The invention also provides a valve rod molding method based on the mold, which comprises the following steps:
step 1): manufacturing a valve rod insert, and performing surface deoiling and rough treatment;
step 2): processing the molding material, and wrapping part of the molding material on the surface of the valve rod insert;
and step 3): brushing a release agent in the mold forming cavity;
step 4): the lower end of the valve rod insert is coated with lubricating oil;
and step 5): inserting the valve rod insert into the ejector rod, and returning the ejector rod to the bottommost limiting position;
step 6): closing each cooling channel, opening each heating channel, introducing heat conduction oil, and heating the die;
step 7): heating to a preheating temperature, stacking the mould pressing material, putting the mould pressing material into a cavity, adding one or more combined fillers of epoxy vinyl resin, epoxy phenolic resin, aluminum oxide and magnesium oxide, uniformly mixing, and heating at the current temperature after mould closing;
step 8): unloading the pressure loaded on the mold, releasing steam generated by heating in the cavity, closing the mold, pressurizing, continuously heating to a curing temperature, maintaining the pressure for several minutes, and then opening the mold;
step 9): a valve rod in the die is ejected out by using an ejection mechanism of hydraulic equipment, and the ejector rod is placed in the lower die after the valve rod is taken out;
step 10): and (4) opening the cooling channel, alarming by an alarm after the temperature of the die is reduced to the preheating temperature, and repeating the steps 1-9.
The invention has the beneficial effects that: the die has the advantages that the structure is simplified, the using steps of the die are few, the produced valve rod is uniformly heated, and the valve rod is not easy to deform due to the thermal stress generated inside; the valve rod made of the glass fiber reinforced plastic can be used in strong acid and strong alkali media, and has higher strength. The invention provides a high-efficiency glass fiber reinforced plastic valve rod compression molding die and a method, wherein the die comprises an upper die and a lower die, and the upper die and the lower die consist of a die body and a bottom plate; the bottom plate is connected with the die body through bolts; a cavity for placing raw materials is formed between the upper die and the lower die, four guide blocks are arranged at four corners of the upper die, inclined planes are formed in the inner sides of the guide blocks, and the upper die and the lower die can be automatically aligned when the dies are closed; an ejection device is arranged in the lower die; the outer surface of the lower die is provided with a temperature sensor and an alarm; the upper die and the lower die are provided with a heating channel and a cooling channel, so that the production efficiency of the valve rod can be effectively improved; the heating channel and the cooling channel are U-shaped, so that the materials in the cavity are uniformly heated. The upper bottom plate and the lower bottom plate are arranged, so that the die can be fixed on hydraulic equipment, die opening of the die is facilitated, the U-shaped heating channel and the U-shaped cooling channel are designed, the valve rod is uniformly heated in the production process, the production efficiency of the valve rod is improved, and the production cost is low.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a first schematic diagram of the upper mold in this embodiment.
Fig. 4 is a second schematic diagram of the upper mold in this embodiment.
Fig. 5 is a first schematic view of the lower mold in the present embodiment.
Fig. 6 is a second schematic view of the lower mold in the present embodiment.
Fig. 7 is a schematic view of the lift pin in the present embodiment.
FIG. 8 is a flow chart of the molding process of the present invention.
Wherein: 1, mounting a mold; 2-a first heating channel; 3-a first cooling channel; 4-a second heating channel; 5-a second cooling channel; 6-a top rod; 7-lower mould; 101-upper top plate; 102-an upper die body; 103-a guide bevel; 104-chamfering; 105-a guide block; 106-upper bolt holes; 107-plug; 601-a groove; 602-the upper end of the ejector rod; 603-the lower end of the ejector rod; 701-a boss; 702-a recessed land plane; 703-a lower die body; 704-a lower base plate; 705-concave stage; 706-lower bolt hole; 707-jack rod hole; 8-valve stem insert.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, the glass fiber reinforced plastic valve stem compression molding mold comprises an upper mold 1 and a lower mold 7; a plug 107 extends out of the center of the bottom of the upper mold 1; the upper die 1 is arranged at the top of the lower die 7; a forming cavity for storing raw materials is formed in the lower die 7, and a plug of the upper die 1 extends into an upper port of the forming cavity to seal the upper port of the forming cavity; the lower part of the forming cavity is provided with a mandril 6, the upper port of the mandril 6 is provided with a groove 601 for forming the tail part of the valve rod, and the lower end of the mandril 6 extends out of the lower bottom plate 704.
Preferably, the upper die 1 comprises an upper top plate 101 and an upper die body 102, wherein the upper top plate 101 is arranged on the top of the upper die body 102; the upper top plate 101 is connected to the hydraulic equipment by bolts.
Preferably, as shown in fig. 5 and 6, the lower mold 7 includes a lower base plate 704 and a lower mold body 703, and the lower base plate 704 is connected to a hydraulic device by bolts; the lower bottom plate 704 is arranged at the bottom of the lower die body 703 and connected with the lower die body by bolts; the molding cavity is opened in the lower mold body 703.
Preferably, as shown in fig. 3 and 4, four corners of the bottom of the upper die body 102 are respectively provided with a guide block 105; four corners of the top of the lower die body 703 are respectively provided with a concave platform matched with the guide block 105. During installation, the guide blocks 105 snap into the corresponding recessed lands.
Preferably, the guide block 105 is provided with a guide inclined surface 103 on the inner side, and the guide block 105 is provided with a chamfer 104 on the inner bottom.
Preferably, a transverse or longitudinal first heating channel 2 is formed in the upper die body 102; a transverse or longitudinal second heating channel is formed in the lower die body 703.
Preferably, a first cooling channel 3 and a second cooling channel which are transverse or longitudinal are further formed in the lower die body 703, and the first cooling channel 3 and the second cooling channel are respectively arranged on the upper side and the lower side of the second heating channel.
Preferably, the first heating channel 2, the second heating channel 3, the first cooling channel 4 and the second cooling channel 5 are all U-shaped channels, and the forming cavity is located in an opening of the U-shaped channel.
Preferably, the media in the first heating channel 2 and the second heating channel 4 are heat conducting oil, and the media in the first cooling channel 3 and the second cooling channel 5 are cooling water.
Preferably, a temperature sensor is mounted on the outer surface of the lower die body 703, the temperature sensor is connected to an alarm, and the alarm is an audible and visual alarm.
In this embodiment, the specific structure of the mold is as follows:
the mould comprises an upper mould 1 and a lower mould 7; the upper die 1 comprises an upper top plate 101 and an upper die body 102; four guide blocks 105 are arranged at four corners of the bottom of the upper die body 102; the lower die 7 comprises a lower die body 703 and a lower bottom plate 704, and a boss 701 matched with the lower opening of the upper die body 102 is formed at the upper end of the lower die body 703; four corners of the top of the lower die body 703 are provided with concave platforms 705 adapted to the guide blocks 105 (the lower end surfaces of the guide blocks 105 are in contact with the concave platform planes 702); a molding cavity for storing raw materials is formed inside the lower die body 703. The upper die body 102 and the upper top plate 101, and the lower die body 703 and the lower bottom plate 704 are respectively connected by bolts. The upper top plate 101 and the lower bottom plate 704 are respectively fixed on hydraulic equipment through bolts (the upper bolt hole 106 and the lower bolt hole 706 are respectively formed in the upper top plate and the lower bottom plate), so that materials can be conveniently pressurized, and the valve rod can be conveniently opened after being formed. The guide block 105 is provided with a guide inclined plane 103, and the bottom of the inner side of the guide block 105 is provided with a chamfer 104; when the molded valve rod is taken out, the upper mold 1 or the lower mold 7 may be slightly moved, and the guide block 105 and the chamfer 104 can automatically align the upper mold 1 and the lower mold 7 when the molds are closed.
Go up mould 1 and be equipped with first heating channel 2, lower mould 7 is equipped with first cooling channel 3, second heating channel 4, second cooling channel 5, first heating channel 2, second heating channel 3, first cooling channel 3, second cooling channel 5 are U type passageway, the medium is the conduction oil in first heating channel 2, the second heating channel 4, the medium is the cooling water in first cooling channel 3, the second cooling channel 5, guarantees that the shaping intracavity material can be heated evenly and valve rod shaping back rapid cooling, improves production efficiency, can reduce the cost of production simultaneously.
The ejector rod 6 and the lower die 7 are mutually independent structures; the top bar 6 comprises a top bar upper end 602 and a top bar lower end 603 which are connected by bolts. The lower bottom plate 704 is provided with a mandril hole 707, and a gap is reserved between the mandril hole 707 and the mandril lower end 603. As shown in FIG. 7, the diameter of the upper end 602 of the jack is larger than the diameter of the jack aperture 707, and the upper end 602 of the jack is provided with a groove 601. The upper end 602 of the ejector pin is positioned in the lower die 7, and the tail part of the valve rod can be molded in the groove 601. The lower end 603 of the ejector pin penetrates out of the ejector pin hole 707.
In the invention, the valve rod is formed by co-molding the valve rod insert 8 and high-efficiency glass fiber reinforced plastic, and the lower end of the valve rod insert 8 is connected with the groove 601 at the upper end of the ejector rod 6. As shown in fig. 8, the present invention also provides a valve stem molding method based on the above mold, the method comprising:
step 1): and manufacturing a valve rod insert 8, and performing surface deoiling and rough treatment.
Wiping the valve rod insert 8 with 95% absolute ethyl alcohol to remove a surface oil film, manufacturing the surface of the valve rod insert 8 into a non-smooth surface by using a lathe knurling tool, and increasing the contact area to enable the insert to be tightly attached to the efficient glass fiber reinforced plastic;
step 2): the molding compound is processed and part of the molding compound is wrapped on the surface of the valve rod insert 8.
And (3) removing the surface film from the mould pressing material of the glass fiber reinforced plastics, cutting the mould pressing material into a square and a triangle with the side length of 3-5cm by using a tool, and wrapping part of the mould pressing material on the surface of the valve rod insert 8.
Step 3): and (4) brushing a release agent in the mold forming cavity. Spraying the release agent on the surface of the mold cavity once, standing for 2-3 minutes, spraying the release agent again once, and repeating for 2-3 times.
Step 4): the lower end of the valve rod insert 8 is coated with lubricating oil. The bottom of the valve rod insert 8 is coated with lubricating oil, the ejector rod groove 601 is filled with the lubricating oil, and the situation that the valve rod insert 8 is inserted into the ejector rod 6 and heated to form a cavity, and negative pressure cannot be taken out easily is avoided.
Step 5): and inserting the valve rod insert 8 into the ejector rod 6, and returning the ejector rod 6 to the bottommost limiting position.
Step 6): and closing each cooling channel, opening each heating channel, introducing heat conduction oil, and heating the die.
Step 7): heating to a preheating temperature, stacking the mould pressing materials, putting the mould pressing materials into a cavity, adding one or more combined fillers of epoxy vinyl resin, epoxy phenolic resin, aluminum oxide and magnesium oxide, uniformly mixing, and heating for 5 minutes by using the current temperature after mould closing.
Step 8): and (4) unloading the pressure loaded on the die, releasing steam generated by heating in the die cavity, closing the die, pressurizing, continuously heating to the curing temperature, maintaining the pressure for a few minutes, and then opening the die.
Step 9): and (3) ejecting the valve rod in the die by using an ejection mechanism of hydraulic equipment, and putting the ejector rod 6 into the lower die 7 after taking out the valve rod.
Step 10): and (4) closing the heating channel, opening the cooling channel, alarming by an alarm after the temperature of the die is reduced to the preheating temperature, and repeating the operation of the step (1) to the step (9).
It should be noted that, in the seventh step, after the raw materials are heated to the preheating temperature, the raw materials are placed into the cavity, and after the die assembly, the raw materials are heated for 5 minutes by using the current temperature, so that the materials flow in the cavity sufficiently to avoid the problem of the surface quality of the molded valve rod; and step eight, continuously heating to the curing temperature, staying for several minutes, and then opening the mold, wherein the staying time is determined by the thickness of the formed valve rod and is generally 1cm for 2min.
While the preferred embodiments of the present invention have been described, it should be understood that modifications and adaptations to those embodiments may occur to one skilled in the art without departing from the principles of the present invention and are within the scope of the present invention.
Claims (10)
1. A compression molding die for a glass fiber reinforced plastic valve rod is characterized by comprising an upper die and a lower die; a plug extends out of the center of the bottom of the upper die; the upper die is arranged at the top of the lower die; a forming cavity for storing raw materials is formed in the lower die, and a plug of the upper die extends into an upper port of the forming cavity to seal the upper port of the forming cavity; the lower part of the forming cavity is provided with an ejector rod, the upper port of the ejector rod is provided with a groove for forming the tail part of the valve rod, and the lower end of the ejector rod extends out of the lower bottom plate.
2. The glass fiber reinforced plastic valve stem compression molding mold of claim 1, wherein the upper mold comprises an upper top plate and an upper mold body, the upper top plate is arranged on the top of the upper mold body; the upper top plate is connected with hydraulic equipment through bolts.
3. The mold for molding a valve stem of glass fiber reinforced plastic according to claim 2, wherein the lower mold comprises a lower base plate and a lower mold body, the lower base plate being connected to a hydraulic device by bolts; the lower bottom plate is arranged at the bottom of the lower die body and is connected with the lower die body through a bolt; the molding cavity is arranged in the lower die body.
4. The mold for molding a glass fiber reinforced plastic valve rod according to claim 3, wherein four corners of the bottom of the upper mold body are respectively provided with a guide block; four corners of the top of the lower die body are respectively provided with a concave platform matched with the guide block. When the installation, the guide block is clamped into the corresponding concave table.
5. The mold for molding a valve stem of glass fiber reinforced plastic according to claim 4, wherein the guide block has a guide slope on the inner side and a chamfer on the bottom of the inner side of the guide block.
6. The glass fiber reinforced plastic valve rod compression molding die of claim 3, wherein a transverse or longitudinal first heating channel is formed in the upper die body; and a transverse or longitudinal second heating channel is formed in the lower die body.
7. The mold for molding a valve stem of glass fiber reinforced plastic according to claim 6, wherein the lower mold body further comprises a first cooling channel and a second cooling channel, the first cooling channel and the second cooling channel are disposed in the upper and lower sides of the second heating channel, respectively.
8. The mold for molding a valve stem of glass fiber reinforced plastic according to claim 7, wherein the first heating channel, the second heating channel, the first cooling channel and the second cooling channel are all U-shaped channels, and the molding cavity is located in an opening of the U-shaped channel.
9. The mold for molding a valve stem of glass fiber reinforced plastic according to claim 1, wherein a temperature sensor is installed on the outer surface of the lower mold body.
10. A method of molding a valve stem based on the mold of any one of claims 1 to 9, the method comprising:
step 1): manufacturing a valve rod insert, and performing surface deoiling and rough treatment;
step 2): processing the molding material, and wrapping part of the molding material on the surface of the valve rod insert;
step 3): brushing a release agent in the mold forming cavity;
step 4): the lower end of the valve rod insert is coated with lubricating oil;
step 5): inserting the valve rod insert into the ejector rod, and returning the ejector rod to the bottommost limiting position;
step 6): closing each cooling channel, opening each heating channel, introducing heat conduction oil, and heating the die;
step 7): heating to a preheating temperature, stacking the mould pressing materials into a cavity, adding one or more combined fillers of epoxy vinyl resin, epoxy phenolic resin, aluminum oxide and magnesium oxide, uniformly mixing, and heating at the current temperature after mould closing;
step 8): unloading the pressure loaded on the mold, releasing steam generated by heating in the cavity, closing the mold, pressurizing, continuously heating to a curing temperature, maintaining the pressure for several minutes, and then opening the mold;
step 9): the valve rod in the die is ejected out by using an ejection mechanism of hydraulic equipment, and the ejector rod is placed in the lower die after the valve rod is taken out;
step 10): and (4) opening the cooling channel, alarming by an alarm after the temperature of the die is reduced to the preheating temperature, and repeating the steps 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658132.4A CN115972470A (en) | 2022-12-22 | 2022-12-22 | Glass fiber reinforced plastic valve rod compression molding die and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658132.4A CN115972470A (en) | 2022-12-22 | 2022-12-22 | Glass fiber reinforced plastic valve rod compression molding die and method |
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| CN115972470A true CN115972470A (en) | 2023-04-18 |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63257615A (en) * | 1987-04-15 | 1988-10-25 | Mitsubishi Plastics Ind Ltd | Method for molding fiber reinforced plastic valve body |
| US5792402A (en) * | 1996-03-13 | 1998-08-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method of manufacturing carbon fiber reinforced carbon composite valves |
| CN1344872A (en) * | 2000-09-19 | 2002-04-17 | 富士乌兹克斯株式会社 | Lifting valve and its manufacture |
| JP2006281265A (en) * | 2005-03-31 | 2006-10-19 | Mitsubishi Materials Pmg Corp | Die apparatus for compacting powder, and method for forming powder compact |
| CN101708643A (en) * | 2009-10-29 | 2010-05-19 | 陕西秦航机电有限责任公司 | Bonding technique of phenolic plastic powder with metal inserts in forming process |
| CN102416683A (en) * | 2010-09-28 | 2012-04-18 | 张爱平 | Production method of MC (monomer casting) nylon valve |
| CN104819309A (en) * | 2015-03-19 | 2015-08-05 | 辽宁鑫源重工有限公司 | Carbon fiber reinforced plastic butterfly valve |
| CN105108960A (en) * | 2015-08-21 | 2015-12-02 | 重庆天业模具冲压制造有限公司 | Chock plug pressing die with insert |
| CN108928010A (en) * | 2017-05-24 | 2018-12-04 | 江苏创曦复合材料科技有限公司 | A kind of lightweight, wind-force off-course brake with noise abatement manufacturing process |
| CN110480903A (en) * | 2019-08-14 | 2019-11-22 | 武汉工程大学 | Valve faucet compression molding device |
| CN209755882U (en) * | 2019-04-04 | 2019-12-10 | 厦门弘诚复合材料有限公司 | polyester insulator mould pressing die |
| KR102347724B1 (en) * | 2021-03-08 | 2022-01-07 | 대우공업 (주) | Cooling structure of warm forming press molding adapted for simultaneous forming of carbon fiber reinforced polymer and metal plate |
| CN114506099A (en) * | 2022-02-23 | 2022-05-17 | 中磁动力设备(深圳)有限公司 | Carbon fiber reinforced composite gear production system and process |
| CN216579346U (en) * | 2021-03-17 | 2022-05-24 | 厦门弘诚复合材料有限公司 | Mould pressing die |
| CN115157722A (en) * | 2022-03-17 | 2022-10-11 | 吉林大学 | Process device and method for integrally forming embedded metal in composite material |
-
2022
- 2022-12-22 CN CN202211658132.4A patent/CN115972470A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63257615A (en) * | 1987-04-15 | 1988-10-25 | Mitsubishi Plastics Ind Ltd | Method for molding fiber reinforced plastic valve body |
| US5792402A (en) * | 1996-03-13 | 1998-08-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method of manufacturing carbon fiber reinforced carbon composite valves |
| CN1344872A (en) * | 2000-09-19 | 2002-04-17 | 富士乌兹克斯株式会社 | Lifting valve and its manufacture |
| JP2006281265A (en) * | 2005-03-31 | 2006-10-19 | Mitsubishi Materials Pmg Corp | Die apparatus for compacting powder, and method for forming powder compact |
| CN101708643A (en) * | 2009-10-29 | 2010-05-19 | 陕西秦航机电有限责任公司 | Bonding technique of phenolic plastic powder with metal inserts in forming process |
| CN102416683A (en) * | 2010-09-28 | 2012-04-18 | 张爱平 | Production method of MC (monomer casting) nylon valve |
| CN104819309A (en) * | 2015-03-19 | 2015-08-05 | 辽宁鑫源重工有限公司 | Carbon fiber reinforced plastic butterfly valve |
| CN105108960A (en) * | 2015-08-21 | 2015-12-02 | 重庆天业模具冲压制造有限公司 | Chock plug pressing die with insert |
| CN108928010A (en) * | 2017-05-24 | 2018-12-04 | 江苏创曦复合材料科技有限公司 | A kind of lightweight, wind-force off-course brake with noise abatement manufacturing process |
| CN209755882U (en) * | 2019-04-04 | 2019-12-10 | 厦门弘诚复合材料有限公司 | polyester insulator mould pressing die |
| CN110480903A (en) * | 2019-08-14 | 2019-11-22 | 武汉工程大学 | Valve faucet compression molding device |
| KR102347724B1 (en) * | 2021-03-08 | 2022-01-07 | 대우공업 (주) | Cooling structure of warm forming press molding adapted for simultaneous forming of carbon fiber reinforced polymer and metal plate |
| CN216579346U (en) * | 2021-03-17 | 2022-05-24 | 厦门弘诚复合材料有限公司 | Mould pressing die |
| CN114506099A (en) * | 2022-02-23 | 2022-05-17 | 中磁动力设备(深圳)有限公司 | Carbon fiber reinforced composite gear production system and process |
| CN115157722A (en) * | 2022-03-17 | 2022-10-11 | 吉林大学 | Process device and method for integrally forming embedded metal in composite material |
Non-Patent Citations (2)
| Title |
|---|
| 罗方河编: "《模塑工艺和模具结构》", 31 May 2004, 中国劳动社会保障出版社, pages: 38 - 40 * |
| 谢维章, 田佩星: "短纤维增强玻璃钢球阀的设计", 玻璃钢/复合材料, no. 03, 28 June 1982 (1982-06-28) * |
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