CN210284566U - Film coating die for metal plastic composite material rotating blade propeller - Google Patents
Film coating die for metal plastic composite material rotating blade propeller Download PDFInfo
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- CN210284566U CN210284566U CN201920556133.5U CN201920556133U CN210284566U CN 210284566 U CN210284566 U CN 210284566U CN 201920556133 U CN201920556133 U CN 201920556133U CN 210284566 U CN210284566 U CN 210284566U
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- lower die
- pressing block
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- die frame
- blade
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Abstract
The utility model discloses a film-coating mould of a metal plastic composite material rotating paddle propeller, wherein the main structure of the paddle is processed by stainless steel, dense through holes are processed on the paddle, two surface plastic protective layers are connected into an integral structure through the through holes densely distributed on the paddle, and the insecure problem that the large-area surface composite of the paddle can generate stripping is solved; in the film covering mould of the utility model, the lower mould frame is positioned in the groove of the lower mould pressing block; the upper mold frame is connected to the lower mold frame through a pin, and the upper mold block is arranged in the upper mold frame and is positioned by a pin; the counter bore is processed at the position, corresponding to the groove through hole, of the lower die frame, the pin bolt enters the counter bore of the lower die frame from the lower end of the groove through hole, and therefore the combined structure of the lower die frame and the blade main body structure is located, the locating problem of each part of the die is solved, the female die dislocation caused by part movement is prevented, and the processing precision is improved.
Description
Technical Field
The utility model belongs to the technical field of the screw, concretely relates to metal plastic composite rotates tectorial membrane mould of paddle screw.
Background
The ship propeller converts the rotation power of the engine into the rotation of the blades, generates propelling force to water and propels the ship to advance. The through-flow pump propeller converts the rotation power of an engine into the rotation of blades to generate propulsive force on water, so that the water advances along a pump pipe. The propeller of the cross-flow turbine drives the blades to drive the coaxial generator rotor to rotate by virtue of the driving force of water, so that water energy is converted into electric energy. The propeller is formed by connecting more than three blades with a hub, wherein one side of each blade facing water is a water guide surface, and the other side of each blade is a back water surface. The propellers comprise fixed propellers and rotating propellers. The blades of the fixed propeller are fixed with the hub and are usually cast into a whole. The blades of the propeller can rotate at an angle according to the change of speed and thrust to obtain the best effect. The rotation of the blades may be controlled by gears, hydraulic cylinders or linkages. Most of the low-power propellers are fixed-propeller propellers. High-power propellers, in particular to propellers of thousands of kilowatts, are all provided with rotating propellers. The small propellers weigh only tens of kilograms, while the large propellers can weigh hundreds of tons. For example, an aircraft carrier propeller has a diameter of 6 meters and weighs over a hundred tons. The diameter of the rotating wheel of the bulb through-flow turbine can reach 7.3 meters, the weight of the bulb through-flow turbine can reach 230 tons, and the bulb through-flow turbine also has a trend of greater development.
The existing propeller is completely made of metal materials. Specially made copper alloys such as manganese bronze, manganese aluminum bronze, nickel aluminum bronze and the like are commonly used for working in seawater. The propeller working in fresh water has been made of cast iron or copper alloy in the past, and is mostly made of stainless steel at present. After the propeller is cast and formed, the surface of the propeller blade requires a certain streamline curvature, the special-shaped processing difficulty is high, and careful calculation and processing are required. Computer technology is now used to optimize propellers. The surface smoothness of the blade is high, and the level of micron level is required. In addition to being subject to chemical erosion, cavitation erosion and particle impact wear, propellers are subject to extremely high efficiency and extremely low noise during operation.
Among the existing materials, corrosion resistance and abrasion resistance are the advantages of some plastics. Such as ultra-high polyethylene plastic. The ultra-high polyethylene plastic (UHMWPE) has a small density (0.94) and has outstanding wear resistance, the wear resistance is in direct proportion to the molecular weight, the wear resistance is better along with the increase of the molecular weight, and the wear resistance is higher than nylon and polytetrafluoroethylene by 4 times, is 6 times higher than that of brass alloy and is 7-10 times higher than that of carbon steel and stainless steel. Excellent stress cracking resistance, excellent tensile strength, extremely high impact strength, excellent chemical stability and fatigue resistance. Low friction coefficient (0.05-0.11) and self-lubricating property, and has interfacial slippage phenomenon in water. The product has no surface adsorption force, and the anti-adhesion capability of the product is second to that of PTFE with the best non-stick property in plastic, so that the surface of the product is not easy to adhere to other materials and has interface slippage. Excellent impact energy absorption, and the impact energy absorption value is the highest in all plastics, so that the noise damping performance is good, the noise reduction effect is excellent, and the operation is stable and low in noise. Easy processing, and is easier and more labor-saving than the mechanical processing of copper alloy and stainless steel. The hot-pressed ultra-high molecular weight polyethylene can be bonded with stainless steel, aluminum and other metals. However, UHMWPE has the disadvantages of low surface hardness and heat distortion temperature, poor flexural strength and creep properties, etc., compared to other engineering plastics. This is due to the molecular structure and molecular aggregation morphology of UHMWPE, which can be improved by filling, alloying, blending and crosslinking modifications. However, the strength of the modified ultra-high polyethylene plastic is still low.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a metal plastic composite rotates tectorial membrane mould of paddle screw can guarantee the intensity of screw, improves and resistance to wears and corrosion.
A main structure (1-1) of a rotating paddle propeller is made of stainless steel materials, two surfaces of the main structure (1-1) are coated with plastic protective layers, through holes (1-5) are processed in the main structure (1-1) in a direction vertical to a paddle surface, and the protective layers on the two surfaces are connected into a whole through the through holes (1-5) of the main structure (1-1).
A film covering die for a rotary blade propeller comprises a lower die frame (6-2), an upper die frame (6-4), an upper die pressing block (6-5) and a lower die pressing block (6-6);
the lower die frame (6-2) and the upper die frame (6-4) are both hollow square frames; a seat groove matched with the end part of one side of the rotating shaft of the main structure (1-1) of the blade is processed on the inner side of the lower die frame (6-2); female dies of the blade main body structure (1-1) are processed on two opposite surfaces of the upper die pressing block (6-5) and the lower die pressing block (6-6); a groove is processed on one side edge of the upper surface of the lower die pressing block (6-6);
the blade main body structure (1-1) is fixed in a seat groove of the lower die frame (6-2) by a fastening bolt (6-2); the lower die frame (6-2) is positioned in the groove of the lower die pressing block (6-6); the upper die frame (6-4) is connected to the lower die frame (6-2) through a pin, and the upper die pressing block (6-5) is arranged in the upper die frame (6-4) and is positioned by a pin; plastic powder is filled in a gap between a female die of the upper die pressing block (6-5) and the lower die pressing block (6-6) and the main body structure (1-1); a through hole along the vertical direction is processed in the groove on the lower die pressing block (6-6), a counter bore is processed at the position of the lower die frame (6-2) corresponding to the groove through hole, and a pin bolt (4-9) enters the counter bore of the lower die frame (6-2) from the lower end of the groove through hole, so that the combined structure of the lower die frame (6-2) and the main structure (1-1) is positioned; bolt through holes are processed in the same positions of the lower die frame (6-2), the upper die frame (6-4), the upper die pressing block (6-5) and the lower die pressing block (6-6), and the upper die pressing block (6-5), the upper die frame (6-4), the lower die frame (6-2) and the lower die pressing block (6-6) are connected into a whole through the through screws (4-16).
Preferably, the lower die frame (6-2), the upper die frame (6-4), the upper die pressing block (6-5) and the lower die pressing block (6-6) are provided with hoisting screw holes.
The utility model discloses following beneficial effect has:
the utility model discloses a metal plastic composite's rotation paddle screw, the paddle major structure adopts stainless steel to process intensive through-hole on it, two surface plastic protective layers connect into an organic whole structure through the through-hole of the dense cloth on the paddle, have solved the insecure problem that the compound can produce and peel off of paddle large tracts of land surface; compared with the existing propeller, the propeller has the advantages that the strength and the safety are ensured, meanwhile, the propeller has the wear resistance and the corrosion resistance of plastics, the efficiency of energy transfer is improved due to the interface slippage phenomenon with water, and the noise of operation is reduced due to the impact energy absorbability.
In the film covering mould of the utility model, the lower mould frame is positioned in the groove of the lower mould pressing block; the upper mold frame is connected to the lower mold frame through a pin, and the upper mold block is arranged in the upper mold frame and is positioned by a pin; the counter bore is processed at the position, corresponding to the groove through hole, of the lower die frame, the pin bolt enters the counter bore of the lower die frame from the lower end of the groove through hole, and therefore the combined structure of the lower die frame and the blade main body structure is located, the locating problem of each part of the die is solved, the female die dislocation caused by part movement is prevented, and the processing precision is improved.
Drawings
FIG. 1 is a schematic view of a blade of a four-blade propeller according to the present invention;
FIG. 2 is a sectional view of the plastic composite mold for the paddle blade of the present invention;
the structure comprises 1-rotating propeller type blades, 2-hubs, 3-water guide cones, 1-1-main body structures, 1-2 rotating shafts, 1-3 water-facing surface protective layers, 1-4 water-backing surface protective layers, 1-5 through holes, 4-9 pin bolts, 4-16 through bolts, 6-2 lower die frames, 6-3 fastening bolts, 6-4 upper die frames, 6-5 upper die pressing blocks and 6-6 lower die pressing blocks.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
In fields such as naval vessel, water pump and hydraulic turbine, the screw generally divide into fixed paddle formula and rotates the paddle formula, and the paddle compound mode of two kinds of screws is different, but paddle structure itself is similar, the utility model discloses a main structure 1-1 of rotating the paddle adopts stainless steel material to make, and the upstream surface and the surface of a back of the body cladding of main structure 1-1 have a plastic protection layer, and the processing of the perpendicular paddle face direction of main structure 1-1 has intensive through-hole 1-5, and the plastic protection layer of the upstream surface and the surface of a back of the body connects through-hole 1-5 of main structure 1-1 and becomes an organic whole. As shown in fig. 1, the rotary propeller is composed of four blades 1, a hub 2 and a water guide cone 3; the main body structure 1-1 and the rotating shaft 1-2 of each blade 1 are made of stainless steel materials, and the upstream surface protective layer 1-3 and the back surface protective layer 1-4 are made of ultra-high polyethylene plastics. The structure and material of the blade 1 of the fixed-blade propeller are the same as those of the blade 1 of the rotary-blade propeller.
The utility model also provides a blade film-coating mould of the rotary propeller; as shown in fig. 2, in order to mold a propeller with rotating blades, each blade 1 needs to be processed separately because the rotating blades are not in the same plane; as shown in FIG. 2, the film covering mold comprises a lower mold frame 6-2, an upper mold frame 6-4, an upper pressing block 6-5 and a lower pressing block 6-6.
The lower die frame 6-2 and the upper die frame 6-4 are both hollow square frames; a seat groove matched with the end part of one side of the rotating shaft of the main structure 1-1 of the blade is processed on the inner side of the lower die frame 6-2; female dies with blade main body structures 1-1 are processed on two opposite surfaces of the upper die pressing block 6-5 and the lower die pressing block 6-6; a groove is processed on one side edge of the upper surface of the lower die pressing block 6-6;
the main structure 1-1 of the blade is fixed in a seat groove of a lower die frame 6-2 by a fastening bolt 6-3; the lower die frame 6-2 is located in the groove of the lower die pressing block 6-6; the upper mold frame 6-4 is connected to the lower mold frame 6-2 through a pin, and the upper mold pressing block 6-5 is installed in the upper mold frame 6-4 and positioned by a pin. Each part is provided with a hoisting screw hole. And a gap between a female die of the upper die pressing block 6-5 and the lower die pressing block 6-6 and the blade main body structure 7 is filled with plastic powder. A through hole along the vertical direction is processed in the groove on the lower die pressing block 6-6, a counter bore is processed at the position of the lower die frame 6-2 corresponding to the groove through hole, and a pin bolt 4-9 enters the counter bore of the lower die frame 6-2 from the lower end of the groove through hole, so that the combined structure of the lower die frame 6-2 and the blade main body structure 1-1 is positioned; bolt through holes are processed in the same positions of the lower die frame 6-2, the upper die frame 6-4, the upper die pressing block 6-5 and the lower die pressing block 6-6, the bolt through holes are evenly distributed in the circumferential direction of the die, and the upper die pressing block 6-5, the upper die frame 6-4, the lower die frame 6-2 and the lower die pressing block 6-6 are connected into a whole through the through screws 4-16.
The technological process of laminating by utilizing the laminating die of the rotating blade propeller comprises the following steps:
Making a blade wood type with the space thickness of 5mm with plastic;
casting a stainless steel rotor blade 1;
machining a casting of the stainless steel rotor blade main body structure 1-1;
and (3) processing an installation platform, an inner diameter, a screw hole, an inner key groove and the like on a boss of a main body structure 1-1 casting of the rotating blade.
And (3) processing a fluid line on the surface of the blade of the main body structure 1-1 of the rotating blade on a profiling milling machine.
Drilling 50x50mm hole grid lines on the blade part of the main body structure 1-1 of the rotating blade, punching pits on the intersection points of the grid lines, drilling a through hole phi 12 according to the punching pits, and leading angles of two ends of the through hole to be 1x45 degrees.
casting iron castings of the mold: and the upper mold pressing block 6-5, the upper mold frame 6-4, the lower mold pressing block 6-6 and the lower mold frame 6-2.
Processing a lower die frame 6-2, an upper die frame 6-4, a female upper die pressing block 6-5 and a lower die pressing block 6-6 of the rotating blade; the back of each part is respectively provided with a hoisting screw hole;
calculating the mass of the ultra-high polyethylene plastic powder needed by each blade according to the total volume and the processing amount of the composite plastic protective layer, and preheating the ultra-high polyethylene plastic powder in a heating furnace at 120 ℃ to eliminate the water in the powder. After cooling, the mixture was divided into 2 portions.
The rotating shaft of the stainless steel blade main body structure 1-1 is fixed in a seat groove of the lower die frame 6-2 and is fixed in the lower die frame 6-2 through a fastening bolt 6-3.
The lower mold pressing block 6-6 is placed on the cushion block, the pin bolts 4-9 and the through holes of the through screws 4-16 are exposed, the lower mold frame 6-2 fixed with the main structure 1-1 of the paddle is located in the grooves of the lower mold pressing block 6-6, and the pin bolts 4-9 are used for positioning and fixing the lower mold pressing block and the lower mold frame. The upper mold frame 6-4 is seated on the lower mold frame 6-2 through a pin shaft. And uniformly paving 1 part of ultrahigh polyethylene plastic powder in a female die of the lower die pressing block 6-6 and the surface of the blade part of the main structure 1-1 of the blade. Then, an upper pressing block 6-5 is placed through the pins, and the upper pressing block 6-5, an upper mold frame 6-4, a lower mold frame 6-2 and a lower pressing block 6-8 are connected into a whole through the through screws 4-16. It should be noted that, since the plastic powder is in a loose state before being compacted, when the blade main body structure 1-1 is placed on the lower mold pressing block 6-6, the lower mold frame 6-2 cannot fall into the groove of the lower mold pressing block 6-6, and a gap is formed.
And turning the integral die fixed by the through screw and the nut by 180 degrees, then flatly placing the die, and sitting on the cushion block to expose the through holes of the through screws 4-16. And loosening the nuts of the bolt 4-9 and the through screw rod 4-16, and lifting the lower die pressing block 6-6 for removal. And uniformly paving 1 part of ultrahigh polyethylene plastic powder on the edge of a female die of the upper die pressing block 6-5 and the surface of the blade. And the lower die pressing block 6-6 is positioned and placed back through the pin bolt. Then, the nuts of the pin bolts 4-9 and the through-screws 4-16 are tightened to form a combined mold. It should be noted that after the powder is added on the reverse side, the middle part of the upper die pressing block 6-5 falls on the blade full of the powder due to the fluffy powder, and the edge cannot fall on the upper die frame 6-4, so that a gap is left.
Step 4, hoisting the integral combined die and sending the integral combined die into an oil press, applying pressure of 8-15 Mpa to the lower die pressing block 6-6, gradually pressing the plastic powder, and gradually approaching the lower die frame 6-2 to the bottom of the groove of the lower die pressing block 6-6 due to the gap; and the upper press block 6-5 is gradually close to the upper mold frame 6-4.
Step 5, feeding the pre-pressed combined mold into a sintering furnace for sintering, wherein the furnace temperature is 180-220 ℃;
and 6, naturally cooling the combined die after hot press molding to normal temperature, releasing pressure by an oil press, moving out the combined die, loosening the pin bolts 4-9 and the nuts of the through screws 4-16, lifting the lower die pressing block 6-6 for moving away, and lifting the lower die frame 6-2 together with the blades for moving away for placing at other positions. And (5) loosening the fastening bolt 6-3 and taking out the blade compounded with the plastic protective layer.
And 7, processing the plastic surface of the blade until the plastic surface conforms to the streamline shape and the polishing degree.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A film coating die for a rotating blade propeller is characterized in that a main body structure (1-1) of the blade of the propeller is made of stainless steel materials, two surfaces of the main body structure (1-1) are coated with plastic protective layers, through holes (1-5) are processed on the main body structure (1-1) in a direction vertical to the blade surface, and the protective layers on the two surfaces are connected into a whole through the through holes (1-5) of the main body structure (1-1);
the film covering die comprises a lower die frame (6-2), an upper die frame (6-4), an upper die pressing block (6-5) and a lower die pressing block (6-6);
the lower die frame (6-2) and the upper die frame (6-4) are both hollow square frames; a seat groove matched with the end part of one side of the rotating shaft of the main structure (1-1) of the blade is processed on the inner side of the lower die frame (6-2); female dies of the blade main body structure (1-1) are processed on two opposite surfaces of the upper die pressing block (6-5) and the lower die pressing block (6-6); a groove is processed on one side edge of the upper surface of the lower die pressing block (6-6);
the blade main body structure (1-1) is fixed in a seat groove of the lower die frame (6-2) by a fastening bolt (6-3); the lower die frame (6-2) is positioned in the groove of the lower die pressing block (6-6); the upper die frame (6-4) is connected to the lower die frame (6-2) through a pin, and the upper die pressing block (6-5) is arranged in the upper die frame (6-4) and is positioned by a pin; plastic powder is filled in a gap between a female die of the upper die pressing block (6-5) and the lower die pressing block (6-6) and the main body structure (1-1); a through hole along the vertical direction is processed in the groove on the lower die pressing block (6-6), a counter bore is processed at the position of the lower die frame (6-2) corresponding to the groove through hole, and a pin bolt (4-9) enters the counter bore of the lower die frame (6-2) from the lower end of the groove through hole, so that the combined structure of the lower die frame (6-2) and the main structure (1-1) is positioned; bolt through holes are processed in the same positions of the lower die frame (6-2), the upper die frame (6-4), the upper die pressing block (6-5) and the lower die pressing block (6-6), and the upper die pressing block (6-5), the upper die frame (6-4), the lower die frame (6-2) and the lower die pressing block (6-6) are connected into a whole through the through screws (4-16).
2. The film covering die for the rotary blade propeller as claimed in claim 1, wherein the lower die frame (6-2), the upper die frame (6-4), the upper die pressing block (6-5) and the lower die pressing block (6-6) are provided with lifting screw holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920556133.5U CN210284566U (en) | 2019-04-22 | 2019-04-22 | Film coating die for metal plastic composite material rotating blade propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920556133.5U CN210284566U (en) | 2019-04-22 | 2019-04-22 | Film coating die for metal plastic composite material rotating blade propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210284566U true CN210284566U (en) | 2020-04-10 |
Family
ID=70067174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920556133.5U Expired - Fee Related CN210284566U (en) | 2019-04-22 | 2019-04-22 | Film coating die for metal plastic composite material rotating blade propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210284566U (en) |
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2019
- 2019-04-22 CN CN201920556133.5U patent/CN210284566U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20210422 |