CN114131945A - Metal edge covering method and device for high-speed fan blade - Google Patents
Metal edge covering method and device for high-speed fan blade Download PDFInfo
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- CN114131945A CN114131945A CN202111310472.3A CN202111310472A CN114131945A CN 114131945 A CN114131945 A CN 114131945A CN 202111310472 A CN202111310472 A CN 202111310472A CN 114131945 A CN114131945 A CN 114131945A
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- blade
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- edge covering
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a metal edge covering method and an edge covering device for a high-speed fan blade, wherein the edge covering device comprises a base and a conveyor belt which is positioned above the base and used for conveying the blade, and the base is sequentially provided with a gluing seat used for gluing the edge of the blade, an attaching seat used for attaching an edge covering strip and carrying out vacuum treatment and a thermosetting sleeve used for carrying out thermosetting treatment on an adhesive along the conveying direction of the conveyor belt.
Description
Technical Field
The invention relates to the technical field of fan blade manufacturing, in particular to a metal edge covering method and device for a high-speed fan blade.
Background
At present, fans are widely applied in various industries, especially large fans are relatively more applied, and when the requirement on power is higher, high-speed fans are required to be used. The high-speed fan blade needs to rotate at a high speed, and in order to reduce the damage of impurities in air to the edge of the blade, the blade needs to be subjected to edge covering treatment. The general blade edge covering is a soft metal V-shaped linear strip-shaped object, the linear strip-shaped edge covering is adhered to the edge of the blade through an adhesive, and the edge of the blade is a curved strip, so that the blade is often subjected to the condition of glue empty between the edge covering and the blade during edge covering, and the edge covering adhesion effect is not ideal; and the edge covering of the existing blades is carried out manually, so that the edge covering efficiency is low.
Disclosure of Invention
The invention aims to solve the problems of hollow glue phenomenon and low edge covering efficiency in the process of edge covering of a high-speed fan blade in the prior art, and provides a metal edge covering method and an edge covering device for the high-speed fan blade.
In order to achieve the purpose, the invention adopts the following technical scheme:
the metal wrapping edge of the high-speed fan blade comprises a V-shaped strip wrapping edge main body, wherein two wings of the wrapping edge main body are provided with dividing grooves, and patches are arranged between the dividing grooves. Set up the cut-off groove between the paster, when the limit portion of borduring main part parcel blade, the paster possess sufficient degree of freedom, can hug closely in the blade, guarantee the effective bonding between main part of borduring and the blade, cut-off groove can promote the deformation compliance of borduring simultaneously, makes the main part of borduring can be crooked according to the lines of blade limit portion, better must paste in the blade.
Furthermore, reinforcing holes are formed in the patches and used for allowing fastening screws to penetrate through the reinforcing holes, and the fastening screws can enhance the connection strength of the edge wrapping main body and the blades.
The edge covering method for the metal edge covering of the high-speed fan blade comprises the following steps:
s1: coating a layer of adhesive on the edge of the blade;
s2: the edge wrapping strips are adhered to the edge wrapping positions of the blades;
in order to further ensure effective bonding between the blade and the edge covering strip, air bubbles between the blade and the edge covering strip need to be discharged, and the following steps need to be carried out:
s3: wrapping one end of the blade adhered with the edge wrapping strip to form a sealing space around the edge wrapping strip;
s4: vacuumizing the sealing space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip and the blade to be tightly attached and bonded;
s5: thermally curing the adhesive between the blade and the edge covering strip in a vacuum state;
s6: and the connection between the edge covering strip and the blade is reinforced through rivets.
The invention also provides a wrapping device based on the high-speed fan blade wrapping method, the high-speed fan blade wrapping device comprises a base and a conveyor belt positioned above the base and used for conveying the blades, and the base is sequentially provided with a gluing seat used for gluing the edge of each blade and a sticking seat used for sticking a wrapping strip and carrying out vacuum treatment along the conveying direction of the conveyor belt. Set up telescopic rubberizing bracing piece between rubberizing seat and the base, set up the telescopic and paste tight bracing piece between pasting tight seat and the base.
Preferably, the inside of the gluing seat is provided with a main gluing chamber, the upper part of the gluing chamber is provided with an opening, and the capsule has expansion and contraction functions. The capsule is connected with the gluing chamber through an overflow pipe, and the overflow pipe and the circulation pipe are both provided with electric control valves.
Furthermore, the upper part of the gluing chamber is provided with two movable limiting blocks which are symmetrically distributed, and the opposite surfaces of the movable limiting blocks correspond to the two side surfaces of the edge covering end of the blade in shape and are used for keeping the relative sealing of the contact surfaces between the movable limiting blocks and the blade in the process that the blade enters the gluing chamber.
Furthermore, the movable limiting block is movably connected with the gluing seat in the horizontal direction. Specifically, the upper portion of the gluing seat is provided with a group of symmetrically distributed slideways, the opposite ends of the slideways are provided with openings, the inside of each slideway is provided with a sliding sealing plate and a sealing spring, the sealing spring is positioned between the sliding sealing plate and the non-opening end of the slideway, and the sliding sealing plate is fixedly connected with a movable limiting block. Under the action of the sealing spring, the two movable limit blocks are attached to each other, and the movable limit blocks and the sliding sealing plate form the seal at the upper part of the gluing chamber.
When the blades pass through the gluing seat, the gluing seat slowly moves upwards under the driving of the gluing support rod, the blades enter between the two movable limiting blocks and push the movable limiting blocks to separate the two movable limiting blocks, and the end of the blade to be covered with the edge enters the gluing chamber. At the moment, the electric control valve on the circulating pipe is closed, the electric control valve on the overflow pipe is opened, and the blade extrudes the adhesive in the upper adhesive chamber to enter the capsule. When the movable limiting blocks reach the limit position reaching the horizontal movement, the depth of the to-be-wrapped end of the blade entering the gluing chamber corresponds to the target adhesive line of the blade, the adhesive is glued completely, then, the electric control valve on the overflow pipe is closed, the gluing seat is enabled to move down rapidly through the gluing supporting rod, the blade is rapidly separated from the gluing chamber, the two movable limiting blocks are slowly close to each other, and the gluing chamber is sealed again. At the moment, the electric control valves on the circulating pipe and the overflow pipe are opened, the adhesive in the capsule is extruded into the gluing chamber, the adhesive in the main gluing chamber continuously enters the gluing chamber, and the inside of the gluing chamber is kept sufficient.
It is worth mentioning that, in the above-mentioned process, the blade needs to leave the gluing chamber after being glued, and the gluing agent on the blade is prevented from being scraped off by the movable limiting block. In order to realize the slow movement of the movable limiting block, a certain friction is arranged between the sliding sealing plate and the slide way of the upper rubber seat.
Furthermore, the inside casing that sets up the upper portion opening setting of hugging closely the seat, the opening part of casing is fixed to be set up sealed stopper, and the opposite face of sealed stopper corresponds with two side shapes of the end of borduring of blade for at the in-process that the blade got into the casing, keep the relative seal of the contact surface between sealed stopper and the blade. The inside of casing sets up two symmetric distribution's the frid of borduring and negative pressure shrink pole, two form V type groove between the frid of borduring, V type groove can be used to place the bordure strip. The bottom of the edge-covering groove plate is rotatably connected with the inside of the shell through a pin shaft, the bottom of the edge-covering groove plate is connected with the inside of the shell through a negative pressure shrinkage rod, a sub-vacuum tube is fixedly connected with the shell and detachably connected with a main vacuum tube attached to the tight seat, and the sub-vacuum tube is matched with the main vacuum tube to enable the inside of the shell to form a vacuum state. Wherein, the branch vacuum pipe and the main vacuum pipe are respectively provided with an electric control valve.
When the negative pressure contraction rod is in an extension state, the edge-covering groove plates are attached to the sealing limiting blocks, and the shape of a V-shaped groove between the two edge-covering groove plates is the same as the shape of the edge covering strip; when the negative pressure contraction rod is in a contraction state, the angle corresponding to the V-shaped groove between the edge covering groove plates is increased, the edge covering groove plates are not attached to the sealing limiting block, and the edge covering groove plates are not attached to the edge covering strip.
Specifically, the negative pressure contraction rod wraps the block cylinder body, the piston is arranged in the cylinder body, the supporting spring is arranged between the piston and the bottom of the cylinder body, and the high-pressure air bag is arranged between the piston and the top of the cylinder body. Under the normal state, the negative pressure contraction rod is in an extension state, the supporting spring supports the piston, and the pressure of the high-pressure air bag and the supporting spring are in a balance state; when the inside of the shell is in a vacuum state, the external pressure of the high-pressure air bag is weakened, the high-pressure air bag expands, the piston moves downwards, and the negative pressure contraction rod contracts.
When the blade was through pasting tight seat, pasted tight seat up and moved under the drive of pasting tight bracing piece, the blade is stained with in the one end casing of gluing agent, when sealed stopper and blade contact completely, the blade is stained with the one end of gluing agent and places the bound strake laminating between the frid of borduring, has accomplished the attached of bound strake at blade limit portion this moment. Subsequently, the automatically controlled valve of minute vacuum tube and main vacuum tube is all opened, divide vacuum tube and main vacuum tube to mutually support and carry out evacuation processing to casing inside, make the inside vacuum state that forms of casing, high-pressure gasbag outside pressure weak, the high-pressure gasbag inflation, the piston is down moved, negative pressure shrink pole shrink, the frid of borduring this moment is not pasted with sealed stopper, the frid of borduring simultaneously also does not paste with the borduring strip, be convenient for the discharge of air between borduring strip and the blade, under vacuum environment, the borduring strip can tightly attach and the blade, and the bubble that is mingled with is few. After the air bubbles are removed, the electric control valves of the branch vacuum tube and the main vacuum tube are closed. The tight support rod drives the tight seat to move downwards, the shell leaves the tight seat, the sub-vacuum tube is separated from the main vacuum tube, and the vacuum state inside the shell is kept.
When the gluing agent between bordure strip and the blade is complete dry, open the automatically controlled valve of branch vacuum tube, casing and atmosphere intercommunication this moment take off the casing from the blade, and high-pressure air bag external pressure becomes strong simultaneously, and high-pressure air bag shrink, piston up move, and negative pressure shrink pole extends, bordure frid return to place next bordure strip.
Further, set up the solidification bracing piece on the base, the top of solidification bracing piece sets up the thermosetting cover, the upper portion of thermosetting cover sets up the opening, the inside and casing phase-match of thermosetting cover. When the blade drives the shell to pass through the thermosetting sleeve, the curing support rod extends to enable the thermosetting sleeve to rise, the shell enters the thermosetting sleeve, the heating wire is arranged inside the thermosetting sleeve, the thermosetting sleeve can perform thermosetting treatment on the adhesive between the edge of the blade inside the shell and the edge covering strip, the temperature of the thermosetting treatment is 80-90 ℃, and the blade and the edge covering strip are firmly and effectively adhered.
The invention has the beneficial effects that:
1. according to the invention, the two wings of the edge covering strip are provided with the cutting grooves, the patches are arranged between the cutting grooves, the patches have enough freedom degree and can be tightly attached to the blades, meanwhile, the deformation flexibility of the edge covering strip can be improved, and the effective adhesion between the edge covering strip and the blades is ensured.
2. The invention also provides a binding method and a binding device of the binding strip, which realize the fast and high-efficiency binding processing of the binding strip, replace manual binding and improve the efficiency of binding processing of the blade.
The invention provides an overall solution for the edge covering treatment of the high-speed fan blade, obtains a new edge covering strip structure through the improvement of edge covering, and provides an edge covering method and an edge covering device for the new edge covering strip, so that the high-efficiency edge covering of the new edge covering strip is realized, the problems of unsatisfactory edge covering quality and low efficiency of the high-speed fan blade in the prior art are solved, and the application prospect is wide.
Drawings
FIG. 1 is a schematic structural view of a metal-clad side wing of a high-speed fan blade;
FIG. 2 is a schematic structural diagram of the metal edge wrapping and covering of the high-speed fan blade;
FIG. 3 is a step diagram of the high-speed fan blade edge covering method;
FIG. 4 is a schematic structural diagram of the high-speed fan blade edge covering device;
FIG. 5 is a schematic structural view of the high-speed fan blade edge covering device at the position of a gluing seat;
FIG. 6 is a schematic structural view of the side of the gluing chamber of the high-speed fan blade edge covering device;
FIG. 7 is a schematic structural view of a sliding seal plate of the high-speed fan blade edge covering device;
FIG. 8 is a schematic structural view of the high-speed fan blade edge covering device at the position of a close seat;
fig. 9 is a schematic structural view of the high-speed fan blade edge covering device at the position of the attaching seat a.
In the figure: 1. a blade; 2. wrapping strips; 3. a conveyor belt; 4. a base; 5. gluing seats; 6. gluing a supporting rod; 7. a sticking seat; 8. tightly attaching the support rod; 9. a main vacuum tube; 10. curing the support rod; 11. a thermosetting sleeve; 21. a wrapping main body; 22. pasting a piece; 23. dividing the groove; 24. reinforcing holes; 31. a clamping member; 51. a main glue chamber; 52. a gluing chamber; 53. a movable limiting block; 54. a sliding seal plate; 55. a seal spring; 56. a slideway; 57. a capsule; 58. an overflow pipe; 59. a flow-through tube; 510. feeding a rubber tube; 71. a housing; 72. a limiting block; 73. a wrapping groove plate; 74. vacuum tube separation; 75. a negative pressure contraction rod; 751. a cylinder body; 752. a piston; 753. a support spring; 754. a high pressure air bag; 755. air holes; 756. a connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
The embodiment provides a metal wrapping edge for a high-speed fan blade, and referring to fig. 1 and fig. 2, the metal wrapping edge for the high-speed fan blade comprises a V-shaped strip-shaped wrapping edge main body 21, dividing grooves 23 are formed in two wings of the wrapping edge main body 21, and patches 22 are arranged between the dividing grooves 23. Set up between the paster 22 and cut apart groove 23, when the limit portion of borduring main part 21 parcel blade 1, paster 22 possess sufficient degree of freedom, can hug closely in blade 1, guarantee the effective bonding between main part 21 and the blade 1 of borduring, cut apart groove 23 simultaneously and can promote the deformation compliance of borduring, make the main part 21 of borduring can be crooked according to the lines of blade 1 limit portion, better must paste in blade 1.
Furthermore, the patch 22 is provided with a reinforcing hole 24 for passing a fastening screw, and the fastening screw can enhance the connection strength between the edge-covering main body 21 and the blade 1.
Example 2
The embodiment provides a method for wrapping metal wrapping edges of blades of a high-speed fan in embodiment 1, and referring to fig. 3, the method for wrapping the metal wrapping edges of the blades of the high-speed fan comprises the following steps:
s1: coating a layer of adhesive on the edge of the blade;
s2: the edge wrapping strips are adhered to the edge wrapping positions of the blades;
in order to further ensure effective bonding between the blade and the edge covering strip, air bubbles between the blade and the edge covering strip need to be discharged, and the following steps need to be carried out:
s3: wrapping one end of the blade adhered with the edge wrapping strip to form a sealing space around the edge wrapping strip;
s4: vacuumizing the sealing space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip and the blade to be tightly attached and bonded;
s5: thermally curing the adhesive between the blade and the edge covering strip in a vacuum state;
s6: and the connection between the edge covering strip and the blade is reinforced through rivets.
Example 3
In this embodiment, a hemming device for a high speed fan blade hemming method according to embodiment 2 is provided, and referring to fig. 4, the high speed fan blade hemming device includes a base 4 and a conveyor belt 3 located above the base 4 for conveying the blade 1. A plurality of clamping pieces 31 for clamping the blades 1 are uniformly arranged on the conveyor belt 3. The base 4 sets gradually along the direction of transfer of conveyer belt 3 and is used for the rubberizing seat 5 of blade limit portion rubberizing and is used for pasting the edging 2 and carry out the tight seat 7 of pasting of vacuum treatment. Set up telescopic rubberizing bracing piece 6 between rubberizing seat 5 and the base 4, set up telescopic tight bracing piece 8 of pasting between tight seat 7 and the base 4.
Referring to fig. 5, a main glue chamber 51, a glue chamber 52 with an opening at the upper part, and a capsule 57 with expansion and contraction functions are arranged inside the glue applying base 5, and the material of the capsule 57 is elastic rubber in this embodiment. The bottom of the main glue chamber 51 is connected with the bottom of the gluing chamber 52 through a flow pipe 59, and the main glue chamber 51 is connected with a glue box through a glue inlet pipe 510. The capsule 57 is connected with the gluing chamber 52 through an overflow pipe 58, and the overflow pipe 59 and the overflow pipe 58 are both provided with electric control valves.
Furthermore, the upper portion of the gluing chamber 52 is provided with two movable limiting blocks 53 which are symmetrically distributed, the opposite surfaces of the movable limiting blocks 53 correspond to the shapes of the two side surfaces of the edge wrapping end of the blade 1, and the opposite surfaces of the movable limiting blocks 53 are provided with elastic silica gel blocks which are used for keeping the relative sealing of the contact surfaces between the movable limiting blocks 53 and the blade 1 in the process that the blade 1 enters the gluing chamber 52.
Furthermore, the movable limiting block 53 is movably connected with the upper rubber seat 5 in the horizontal direction. Specifically, a set of symmetrically distributed slideways 56 is arranged at the upper part of the upper rubber seat 5, openings are arranged at opposite ends of the slideways 56, a sliding sealing plate 54 and a sealing spring 55 are arranged inside the slideways 56, the sealing spring 55 is positioned between the sliding sealing plate 54 and the non-opening end of the slideways 56, and the sliding sealing plate 54 is fixedly connected with the movable limiting block 53. Under the action of the sealing spring 55, the two movable stoppers 53 are attached to each other, and the movable stoppers 53 and the sliding sealing plate 54 form the upper seal of the gluing chamber 52.
When the blade 1 passes through the gluing seat 5, the gluing seat 5 slowly moves upwards under the driving of the gluing support rod 6, the blade 1 enters between the two movable limiting blocks 53 and pushes the movable limiting blocks 53, the two movable limiting blocks 53 are separated, and the end of the blade 1 to be wrapped enters the gluing chamber 52. At this time, the electric control valve on the flow pipe 59 is closed, the electric control valve on the overflow pipe 58 is opened, and the blade presses the adhesive inside the upper adhesive chamber 52 into the capsule 57. Referring to fig. 6, when the movable limiting block 53 reaches the limit position of horizontal movement, the depth of the edge-to-be-wrapped end of the blade entering the gluing chamber 52 corresponds to the target adhesive line of the blade 1, and the gluing of the adhesive is finished. Subsequently, the electric control valve on the overflow pipe 58 is closed, the gluing seat 5 is rapidly moved downwards through the gluing support rod 6, the blade 1 is rapidly separated from the gluing chamber 52, the two movable limit blocks 53 are slowly close to each other, and the gluing chamber 52 is sealed again. At this time, the electric control valves on the circulating pipe 59 and the overflow pipe 58 are both opened, the adhesive in the capsule 57 is extruded into the gluing chamber 52, the adhesive in the main gluing chamber 51 continues to enter the gluing chamber 52, and the inside of the gluing chamber 52 is kept sufficient.
It should be noted that, in the above process, the blade 1 needs to leave the gluing chamber 52 quickly after being glued, so as to prevent the adhesive on the blade 1 from being scraped off by the movable limiting block 53. In order to realize the slow movement of the movable limiting block 53, a certain friction is provided between the sliding sealing plate 54 and the slide way 56 of the upper rubber seat 5. Referring to fig. 7, a flexible protruding corrugated plate may be disposed on a contact surface of the sliding seal plate 54 and the slideway 56, a groove is disposed on the corrugated plate, a side surface of the groove close to the movable stopper 53 is inclined downward toward the seal spring 55, and a side surface of the groove close to the seal spring 55 is perpendicular to the movable stopper 53. Between the sliding seal plate 54 and the slide way 56, a low friction is formed between the sliding seal plate 54 and the slide way 56 when moving toward the seal spring 55, and a high friction is formed between the sliding seal plate 54 and the slide way 56 when moving away from the seal spring 55.
Referring to fig. 8, a housing 71 with an upper opening is disposed inside the adhesion seat 7, and the housing 71 is detachably connected to the adhesion seat 7. A sealing limit block 72 is fixedly arranged at an opening of the shell 71, and the opposite surface of the sealing limit block 72 corresponds to the shape of two side surfaces of the edge wrapping end of the blade 1, so that the sealing limit block 72 and the blade 1 can keep the relative sealing of the contact surface in the process that the blade 1 enters the shell 71. The inside of casing 71 sets up two symmetric distribution's bordure frid 73 and negative pressure shrink pole 75, two form V type groove between the frid 73 of borduring, V type groove can be used to place borduring strip 2. The bottom of the edge-covering groove plate 73 is rotatably connected with the inside of the shell 71 through a pin shaft, the bottom of the edge-covering groove plate 73 is connected with the inside of the shell 71 through a negative pressure contraction rod 75, a sub-vacuum tube 74 is fixedly connected with the shell 71, the sub-vacuum tube 74 is detachably connected with a main vacuum tube 9 attached to the tight seat 7, and the sub-vacuum tube 74 and the main vacuum tube 9 are matched to enable the inside of the shell 71 to be in a vacuum state. Wherein the vacuum branch pipe 74 and the main vacuum branch pipe 9 are respectively provided with an electric control valve.
When the negative pressure contraction rod 75 is in an extension state, the edge covering groove plates 73 are attached to the sealing limiting block 72, and the shape of a V-shaped groove between the two edge covering groove plates 73 is the same as the shape of the edge covering strip 2; when the negative pressure contraction rod 75 is in a contraction state, the angle corresponding to the V-shaped groove between the edge covering groove plates 73 is increased, the edge covering groove plates 73 are not attached to the sealing limiting block 72, and meanwhile, the edge covering groove plates 73 are not attached to the edge covering strip 2.
Referring to fig. 9, the negative pressure contraction rod 75 encloses a cylinder 751, a piston 752 disposed inside the cylinder 751, a support spring 753 disposed between the piston 752 and the bottom of the cylinder 751, and a high pressure air bag 754 disposed between the piston 752 and the top of the cylinder 751, wherein the piston 752 is fixedly connected to the bottom of the hemming slot plate 73 by a connecting rod 756, and the top of the cylinder 751 is opened with an air hole 755 for communicating the upper space of the piston 752 in the cylinder 751 with the inner space of the housing 71. In a normal state, the negative pressure contraction rod 75 is in an extension state, the support spring 753 supports the piston 752, and the pressure of the high-pressure air bag 754 and the support spring 753 are in a balance state; when a vacuum state is formed inside the housing 71, the pressure outside the high pressure bladder 754 weakens, the high pressure bladder 754 expands, the piston 752 moves downward, and the negative pressure contraction rod 75 contracts.
When blade 1 was through pasting tight seat 7, pasted tight seat 7 and up removed under the drive of pasting tight bracing piece 8, blade 1 is stained with in the one end casing 71 of gluing agent, when sealed stopper 72 and blade 1 contact completely, blade 1 is stained with the one end of gluing agent and places the laminating of borduring strake 2 between borduring frid 73, has accomplished the attaching of borduring strake 2 in blade 1 limit portion this moment. Subsequently, the electric control valves of the sub-vacuum tube 74 and the main vacuum tube 9 are both opened, the sub-vacuum tube 74 and the main vacuum tube 9 are mutually matched to vacuumize the inside of the shell 71, so that the inside of the shell 71 is in a vacuum state, the external pressure of the high-pressure air bag 754 is weakened, the high-pressure air bag 754 expands, the piston 752 moves downwards, the negative pressure contraction rod 75 contracts, the edge-wrapping groove plate 73 is not attached to the sealing limiting block 72, meanwhile, the edge-wrapping groove plate 73 is not attached to the edge-wrapping strip 2, air between the edge-wrapping strip 2 and the blade 1 is conveniently discharged, and the edge-wrapping strip 2 can be tightly attached to the blade 1 in a vacuum environment and few bubbles are mixed. After the air bubbles are removed, the electric control valves of the branch vacuum pipe (74) and the main vacuum pipe (9) are closed. The tight support rod drives the tight seat 7 to move downwards, the shell 71 leaves the tight seat 7, the sub vacuum tube (74) is separated from the main vacuum tube (9), and the vacuum state in the shell 71 is kept.
When the adhesive between the edge covering strip 2 and the blade 1 is completely dried, the electric control valve of the vacuum distributing pipe 74 is opened, the shell 71 is taken down from the blade 1, at the moment, the shell 71 is communicated with the atmosphere, the external pressure of the high-pressure air bag 754 is increased, the high-pressure air bag 754 is contracted, the piston 752 moves upwards, the negative pressure contraction rod 75 extends, and the edge covering groove plate 73 returns to place the next edge covering strip 2.
Further, a curing support rod 10 is arranged on the base 4, a thermosetting sleeve 11 is arranged on the top of the curing support rod 10, an opening is arranged on the upper portion of the thermosetting sleeve 11, and the interior of the thermosetting sleeve 11 is matched with the shell 71. When the blade drives the shell 71 to pass through the thermosetting sleeve 11, the curing support rod 10 extends to enable the thermosetting sleeve 11 to ascend, the shell 71 enters the thermosetting sleeve 11, the heating wire is arranged inside the thermosetting sleeve 11, the thermosetting sleeve 11 can carry out thermosetting treatment on the adhesive between the edge of the blade 1 and the edge covering strip 2 inside the shell 71, the temperature of the thermosetting treatment is 80-90 ℃, and the blade 1 and the edge covering strip 2 are firmly and effectively adhered.
The working process of the high-speed fan blade edge covering device in the embodiment is as follows:
the blade 1 is clamped on the clamping piece 31, and the blade 1 is horizontally transported by the conveyor belt 3.
(II) when blade 1 through gluing seat 5, gluing seat 5 slowly up-moved under the drive of gluing bracing piece 6, blade 1 gets into between two movable stopper 53 and promotes movable stopper 53, make two movable stopper 53 separation, blade 1 is treated the end of borduring and is got into rubberizing chamber 52, reach the extreme position that reaches horizontal migration when movable stopper 53, the blade treat the degree of depth that the end of borduring gets into rubberizing chamber 52 and blade 1 corresponds with the target gluing agent line, the gluing is finished, afterwards, blade 1 leaves rubberizing chamber 52 rapidly.
(III) blade 1 continues to move and comes to the tight seat 7 of subsides, pastes tight seat 7 up and moves under the drive of pasting tight bracing piece 8, and in blade 1 was stained with the one end casing 71 of gluing agent, when sealed stopper 72 and blade 1 contacted completely, blade 1 was stained with the one end of gluing agent and was placed the 2 laminating of borduring strake between borduring frid 73, had accomplished the attaching of borduring strake 2 in blade 1 limit portion this moment.
Fourthly, the inside of the shell 71 is vacuumized through the vacuum distributing pipe 74, so that the inside of the shell 71 is in a vacuum state, the external pressure of the high-pressure air bag 754 is weakened, the high-pressure air bag 754 expands to enable the negative pressure shrinkage rod 75 to shrink, the edge covering groove plate 73 is not attached to the edge covering strip 2, air between the edge covering strip 2 and the blade 1 can be conveniently discharged, the edge covering strip 2 can be tightly attached to the blade 1 in a vacuum environment, few bubbles are mixed, after the bubbles are discharged, the vacuum distributing pipe 74 is closed, the inside of the shell 71 keeps vacuum, and the shell 71 is separated from the attaching seat 7.
And (V) when the blade drives the shell 71 to pass through the thermosetting sleeve 11, the curing support rod 10 extends to enable the thermosetting sleeve 11 to ascend, the shell 71 enters the thermosetting sleeve 11, the thermosetting sleeve 11 can carry out thermosetting treatment on the adhesive between the edge of the blade 1 and the edge covering strip 2 in the shell 71, the temperature of the thermosetting treatment is 80-90 ℃, and the blade 1 and the edge covering strip 2 are firmly and effectively adhered.
And (VI) when the adhesive between the edge covering strip 2 and the blade 1 is completely dried, opening the vacuum separating pipe 74, communicating the shell 71 with the atmosphere at the moment, and taking the shell 71 off the blade 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The metal wrapping edge for the blades of the high-speed fan is characterized by comprising a V-shaped strip-shaped wrapping edge main body (21), dividing grooves (23) are formed in two wings of the wrapping edge main body (21), patches (22) are arranged between the dividing grooves (23), and reinforcing holes (24) are formed in the patches (22).
2. The high-speed fan blade metal-clad edge covering method based on claim 1 is characterized by comprising the following steps of:
s1: coating a layer of adhesive on the edge of the blade;
s2: the edge wrapping strips are adhered to the edge wrapping positions of the blades;
s3: wrapping one end of the blade adhered with the edge wrapping strip to form a sealing space around the edge wrapping strip;
s4: vacuumizing the sealing space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip and the blade to be tightly attached and bonded;
s5: thermally curing the adhesive between the blade and the edge covering strip in a vacuum state;
s6: and the connection between the edge covering strip and the blade is reinforced through rivets.
3. The edge covering device of the high-speed fan blade edge covering method is characterized by comprising a base (4) and a conveyor belt (3) which is positioned above the base (4) and used for conveying the blade (1), wherein the base (4) is sequentially provided with an adhesive coating seat (5) used for coating the edge of the blade, an adhesive coating seat (7) used for adhering an edge covering strip (2) and performing vacuum treatment, and a thermosetting sleeve (11) used for thermosetting an adhesive along the conveying direction of the conveyor belt (3);
a shell (71) with an upper opening is arranged in the sticking seat (7), a sealing limiting block (72) is arranged at the opening of the shell (71), two wrapping groove plates (73) and a negative pressure shrinkage rod (75) which are symmetrically distributed are arranged in the shell (71), a V-shaped groove is formed between the two wrapping groove plates (73), the bottom of each wrapping groove plate (73) is rotatably connected with the inside of the shell (71) through a pin shaft, the bottom of each wrapping groove plate (73) is connected with the inside of the shell (71) through the negative pressure shrinkage rod (75), a vacuum distributing pipe (74) is fixedly connected with the shell (71), and the vacuum distributing pipe (74) is connected with a main vacuum pipe (9) on the sticking seat (7);
the negative pressure contraction rod (75) wraps a block cylinder body (751), a piston (752) is arranged in the cylinder body (751), a support spring (753) which is arranged between the piston (752) and the bottom of the cylinder body (751), and a high-pressure air bag (754) which is arranged between the piston (752) and the top of the cylinder body (751), the piston (752) is fixedly connected with the bottom of a wrapping groove plate (73) through a connecting rod (756), and the top of the cylinder body (751) is provided with an air hole (755) which is used for communicating the upper space of the piston (752) in the cylinder body (751) with the inner space of a shell (71).
4. The high-speed fan blade edge covering device according to claim 3, wherein when the edge covering groove plates (73) are attached to the sealing limiting blocks (72), the V-shaped groove between the two edge covering groove plates (73) is matched with the shape of the edge covering strip (2).
5. The high-speed fan blade edge covering device according to claim 4, wherein a main glue chamber (51), a glue chamber (52) with an opening at the upper part and a capsule (57) with an expansion and contraction function are arranged in the glue base (5), the bottom of the main glue chamber (51) is connected with the bottom of the glue chamber (52) through a circulating pipe (59), and the capsule (57) is connected with the glue chamber (52) through an overflow pipe (58);
the upper portion of rubberizing room (52) sets up two symmetric distribution's activity stopper (53), the opposite face of activity stopper (53) corresponds with two side shapes of the end of borduring of blade (1), activity stopper (53) and rubberizing seat (5) swing joint.
6. The high-speed fan blade edge covering device according to claim 5, wherein a group of symmetrically distributed slideways (56) is arranged at the upper part of the gluing seat (5), the opposite ends of the slideways (56) are provided with openings, sliding sealing plates (54) and sealing springs (55) are arranged inside the slideways (56), the sealing springs (55) are positioned between the sliding sealing plates (54) and the non-open ends of the slideways (56), and the sliding sealing plates (54) are fixedly connected with movable limiting blocks (53).
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| CN202111310472.3A CN114131945B (en) | 2021-11-05 | 2021-11-05 | High-speed fan blade metal edge-covering and edge-covering method and edge-covering device |
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| CN114131945B (en) | 2023-07-25 |
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