CN114131945B - High-speed fan blade metal edge-covering and edge-covering method and edge-covering device - Google Patents
High-speed fan blade metal edge-covering and edge-covering method and edge-covering device Download PDFInfo
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- CN114131945B CN114131945B CN202111310472.3A CN202111310472A CN114131945B CN 114131945 B CN114131945 B CN 114131945B CN 202111310472 A CN202111310472 A CN 202111310472A CN 114131945 B CN114131945 B CN 114131945B
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a metal binding and binding method and a binding device for a high-speed fan blade, wherein the binding device comprises a base and a conveying belt which is positioned above the base and is used for conveying the blade, the base is sequentially provided with a sizing seat for sizing the blade edge, a binding seat for pasting binding strips, vacuum treatment and a thermosetting sleeve for thermosetting adhesives along the conveying direction of the conveying belt.
Description
Technical Field
The invention relates to the technical field of fan blade manufacturing, in particular to a metal edge-covering method and an edge-covering device for a high-speed fan blade.
Background
At present, fans are widely applied to various industries, and particularly, the application of large fans is relatively more, and when the requirements on power are higher, high-speed fans are needed. The high-speed fan blade needs to rotate at a high speed, and the blade needs to be subjected to edge wrapping treatment in order to reduce damage to the edge of the blade caused by impurities in the air. The common blade edge is a soft metal V-shaped linear strip, the linear strip edge is adhered to the edge of the blade through an adhesive, and the edge of the blade is a curved line, so that the situation that the edge is covered with blank glue between the blades frequently occurs when the blade edge is covered, and the edge-covering adhesive effect is not ideal; and the edge wrapping of the existing blade is performed manually, so that the edge wrapping efficiency is low.
Disclosure of Invention
The invention aims to solve the problems of empty glue phenomenon and low edge wrapping efficiency in the prior art when a high-speed fan blade is wrapped, and provides a metal edge wrapping method and an edge wrapping device for the high-speed fan blade.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the metal edge of the high-speed fan blade comprises a V-shaped strip-shaped edge-wrapping main body, wherein two wings of the edge-wrapping main body are provided with partition grooves, and patches are arranged between the partition grooves. Set up the partition groove between the paster, when the edge portion of main part parcel blade of borduring, the paster possess sufficient degree of freedom, can hug closely in the blade, guarantees the effective bonding between main part and the blade of borduring, and the deformation compliance of borduring can be promoted to the partition groove simultaneously, makes the main part of borduring can be crooked according to the line of blade edge portion, better has been pasted in the blade.
Further, set up the reinforcing hole on the paster, the reinforcing hole is used for fastening screw's passing, and fastening screw can strengthen the joint strength of bordure main part and blade.
The edge wrapping method for the metal edge wrapping of the high-speed fan blade comprises the following steps:
s1: coating a layer of adhesive on the edge of the blade;
s2: adhering the edge wrapping strip to the edge wrapping position of the blade;
in order to further ensure effective adhesion between the blade and the wrapping strip, air bubbles between the blade and the wrapping strip need to be discharged, and the following steps are also needed:
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 sealed space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip to be closely adhered to the blade;
s5: thermally curing the adhesive between the blade and the edge-wrapping strip in a vacuum state;
s6: the connection between the edging strip and the blade is reinforced by rivets.
The invention also provides a binding device based on the high-speed fan blade binding method, which comprises a base and a conveyor belt positioned above the base and used for conveying the blades, wherein the base is sequentially provided with a gluing seat used for gluing the edges of the blades and a binding seat used for pasting binding strips and carrying out vacuum treatment along the conveying direction of the conveyor belt. The telescopic rubberizing bracing piece is set up between rubberizing seat and the base, paste and set up telescopic tight bracing piece of pasting between tight seat and the base.
Preferably, the inside main room of gluing that sets up of rubberizing seat, upper portion set up open-ended rubberizing room and have the capsule of inflation and shrink function, the bottom of main room of gluing is connected through the runner pipe with the bottom of rubberizing room, and the main room of gluing is through advancing the gluey case of rubber tube connection. The capsule is connected with the gluing chamber through an overflow pipe, and the flow pipe and the overflow pipe are both provided with electric control valves.
Further, two symmetrically-distributed movable limiting blocks are arranged on the upper portion of the gluing chamber, the opposite faces of the movable limiting blocks correspond to the two side faces of the edge wrapping end of the blade, and the movable limiting blocks are used for keeping the contact faces between the movable limiting blocks and the blade relatively sealed in the process that the blade enters the gluing chamber.
Further, the movable limiting block is movably connected with the rubberizing seat in the horizontal direction. Specifically, the upper portion of rubberizing seat sets up a set of symmetric distribution's slide, the opposite end of slide sets up the opening, the inside of slide sets up sliding seal board and sealing spring, sealing spring is in between connecting sliding seal board and the slide unopened end, sliding seal board fixed connection activity stopper. Under the action of the sealing spring, the two movable limiting blocks are mutually attached, and the movable limiting blocks and the sliding sealing plate form a seal at the upper part of the gluing chamber.
When the blade passes through the rubberizing seat, the rubberizing seat slowly moves upwards under the drive of the rubberizing supporting rod, the blade enters between the two movable limiting blocks and pushes the movable limiting blocks, the two movable limiting blocks are separated, and the edge-wrapping end of the blade enters the rubberizing chamber. At this time, the electric control valve on the runner pipe is closed, the electric control valve on the overflow pipe is opened, and the blade extrudes the adhesive in the gluing chamber to enter the capsule. When the movable limiting block reaches the limit position of horizontal movement, the depth of the edge to be covered end of the blade, which enters the gluing chamber, corresponds to the target gluing line of the blade, the gluing of the gluing agent is completed, then, the electric control valve on the overflow pipe is closed, the gluing seat is quickly moved downwards through the gluing supporting rod, the blade is quickly separated from the gluing chamber, and the two movable limiting blocks are slowly close to each other to seal the gluing chamber again. At this time, the electronic control valves on the flow pipe and the overflow pipe are opened, the adhesive in the capsule is extruded into the gluing chamber, and the adhesive in the main gluing chamber continuously enters the gluing chamber, so that the sufficiency of the adhesive in the gluing chamber is maintained.
It is worth to say that, above-mentioned in-process, the blade need leave the rubberizing room rapidly after rubberizing for prevent that the gluing agent on the blade from being scraped by movable stopper. In order to realize the slow movement of the movable limiting block, a certain friction is arranged between the sliding sealing plate and the slideway of the rubberizing seat.
Further, the shell with the upper opening is arranged inside the close seat, a sealing limiting block is fixedly arranged at the opening of the shell, the opposite surface of the sealing limiting block corresponds to the two side surfaces of the edge wrapping end of the blade, and the sealing limiting block is used for keeping the relative sealing of the contact surface between the sealing limiting block and the blade in the process that the blade enters the shell. The inside of casing sets up two symmetrical distribution's package Bian Caoban and negative pressure shrink pole, two form the V type groove between the frid of borduring, the V type groove can be used to place the strip of borduring. The bottom of the edge-covering groove plate is rotationally 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, the shell is fixedly connected with a vacuum dividing pipe, the vacuum dividing pipe is detachably connected with a main vacuum pipe on the close seat, and the vacuum dividing pipe and the main vacuum pipe are matched to enable the inside of the shell to form a vacuum state. Wherein the branch vacuum tube and the main vacuum tube are respectively provided with an electric control valve.
When the negative pressure shrinkage rod is in an extending state, the edge-wrapping groove plates are attached to the sealing limiting blocks, and the shape of a V-shaped groove between the two edge-wrapping groove plates is the same as that of the edge-wrapping strip; when the negative pressure shrinkage rod is in a shrinkage state, the corresponding angle of the V-shaped groove between the two edge-wrapping groove plates is enlarged, the edge-wrapping groove plates are not attached to the sealing limiting block, and meanwhile, the edge-wrapping groove plates are not attached to the edge-wrapping strip.
Specifically, negative pressure shrink pole package piece cylinder body, be located the inside piston that sets up of cylinder body, be located the supporting spring between piston and the cylinder body bottom and be located the high-pressure gasbag between piston and the cylinder body top, the bottom of frid is bordured in the piston through connecting rod fixed connection, the gas pocket that is arranged in intercommunication cylinder body upper portion space and casing inner space is seted up at the cylinder body top. Under the normal state, the negative pressure contraction rod is in an extending state, the supporting spring supports the piston, and the pressure of the high-pressure air bag and the supporting spring are in a balanced state; when the inside of the shell forms a vacuum state, the pressure outside the high-pressure air bag is weakened, the high-pressure air bag expands, the piston moves downwards, and the negative pressure shrinkage rod shrinks.
When the blade is through pasting tight seat, pasting tight seat and upwards removing under pasting the drive of bracing piece, in the one end casing that the blade was glued to have the gluing agent, when sealed stopper and blade complete contact, the blade was glued the one end that has the gluing agent and is placed the strip laminating of borduring between the frid, has accomplished the strip of borduring at the attachment of blade limit portion this moment. Then, the electric control valves of the branch vacuum pipe and the main vacuum pipe are opened, the branch vacuum pipe and the main vacuum pipe are mutually matched to carry out vacuumizing treatment on the inside of the shell, so that the vacuum state is formed inside the shell, the external pressure of the high-pressure air bag is weakened, the high-pressure air bag expands, the piston moves downwards, the negative pressure shrinkage rod shrinks, the edge wrapping groove plate is not attached to the sealing limiting block, meanwhile, the edge wrapping groove plate is not attached to the edge wrapping strip, air between the edge wrapping strip and the blade is conveniently discharged, the edge wrapping strip can be tightly attached to the blade in a vacuum environment, and the air bubbles are few. After the air bubble is removed, the electric control valves of the branch vacuum pipe and the main vacuum pipe are closed. The close support rod drives the close seat to move downwards, the shell leaves the close seat, the vacuum separating pipe is separated from the main vacuum pipe, and the vacuum state inside the shell is maintained.
When the adhesive between the wrapping strip and the blade is completely dried, an electric control valve of the vacuum dividing pipe is opened, the shell is communicated with the atmosphere, the shell is taken down from the blade, meanwhile, the external pressure of the high-pressure air bag is strong, the high-pressure air bag contracts, the piston moves upwards, the negative pressure contraction rod stretches, and the bag Bian Caoban returns to be placed on the next wrapping 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, inside and the casing phase-match of thermosetting cover. When the blade drives the shell to pass through the thermosetting sleeve, the thermosetting supporting rod stretches to enable the thermosetting sleeve to rise, the shell enters the thermosetting sleeve, the heating wire is arranged in the thermosetting sleeve, the thermosetting sleeve can carry out thermosetting treatment on the adhesive between the edge of the blade inside the shell and the edge wrapping strip, the thermosetting treatment temperature is 80-90 ℃, and stable and effective adhesion between the blade and the edge wrapping strip is realized.
The beneficial effects of the invention are as follows:
1. according to the invention, the two wings of the edge covering strip are provided with the dividing grooves, the patch is arranged between the dividing grooves, has enough degree of freedom, can be tightly attached to the blade, and can improve the deformation softness of the edge covering strip, so that the effective adhesion between the edge covering strip and the blade is ensured.
2. The invention also provides an edge wrapping method and an edge wrapping device for the edge wrapping strip, which realize quick and efficient edge wrapping processing of the edge wrapping strip, replace manual edge wrapping and improve the efficiency of blade edge wrapping processing.
The invention actually provides an overall solution for the edge covering treatment of the high-speed fan blade, a new edge covering strip structure is obtained through improvement of edge covering, and an edge covering method and an edge covering device for the new edge covering strip are provided, so that efficient edge covering of the new edge covering strip is realized, and the problems of non-ideal 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 view of the structure of a metal edge-wrapped flank of a blade of the high-speed fan;
FIG. 2 is a schematic view of the structure of the metal wrapping edge of the blade of the high-speed fan;
FIG. 3 is a step diagram of the present high speed fan blade taping method;
FIG. 4 is a schematic structural view of the high-speed fan blade taping device;
FIG. 5 is a schematic view of the structure of the high-speed fan blade taping device at the rubberizing base;
FIG. 6 is a schematic view of the structure of the high-speed fan blade taping device at the side of the gluing chamber;
FIG. 7 is a schematic view of the structure of the high-speed fan blade taping device at the sliding sealing plate;
FIG. 8 is a schematic view of the structure of the high-speed fan blade taping device at the place where the blade taping device is tightly attached;
fig. 9 is a schematic structural view of the blade edge covering device of the high-speed fan at the position close to the seat a.
In the figure: 1. a blade; 2. edge wrapping strips; 3. a conveyor belt; 4. a base; 5. a sizing seat; 6. a sizing supporting rod; 7. attaching a base; 8. tightly attaching a supporting rod; 9. a main vacuum tube; 10. solidifying the supporting rod; 11. thermally curing the sleeve; 21. a hemming body; 22. a patch; 23. a dividing groove; 24. reinforcing the hole; 31. a clamping member; 51. a main glue chamber; 52. a sizing chamber; 53. a movable limiting block; 54. sliding the sealing plate; 55. a seal spring; 56. a slideway; 57. a capsule; 58. an overflow pipe; 59. a flow pipe; 510. a rubber inlet pipe; 71. a housing; 72. a limiting block; 73. a bag Bian Caoban; 74. dividing vacuum tubes; 75. a negative pressure contraction rod; 751. a cylinder; 752. a piston; 753. a support spring; 754. a high pressure air bag; 755. air holes; 756. and (5) connecting a rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
The embodiment provides a metal wrapping edge of a high-speed fan blade, referring to fig. 1 and 2, the metal wrapping edge of the high-speed fan blade comprises a V-shaped strip-shaped wrapping edge main body 21, two wings of the wrapping edge main body 21 are provided with dividing grooves 23, and patches 22 are arranged between the dividing grooves 23. Set up division groove 23 between the paster 22, when the limit portion of main part 21 parcel blade 1 of borduring, paster 22 possess sufficient degree of freedom, can hug closely in blade 1, guarantee to bordure effective bonding between main part 21 and the blade 1, division groove 23 can promote the deformation compliance of borduring simultaneously, makes bordure main part 21 can be crooked according to the line of blade 1 limit portion, better paste in blade 1.
Further, the patch 22 is provided with a reinforcing hole 24, and the reinforcing hole is used for passing a fastening screw, so that the fastening screw can strengthen the connection strength between the edge-covering main body 21 and the blade 1.
Example 2
In this embodiment, a method for wrapping a metal edge of a high-speed fan blade according to embodiment 1 is provided, and referring to fig. 3, the method for wrapping a metal edge of a high-speed fan blade includes the following steps:
s1: coating a layer of adhesive on the edge of the blade;
s2: adhering the edge wrapping strip to the edge wrapping position of the blade;
in order to further ensure effective adhesion between the blade and the wrapping strip, air bubbles between the blade and the wrapping strip need to be discharged, and the following steps are also needed:
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 sealed space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip to be closely adhered to the blade;
s5: thermally curing the adhesive between the blade and the edge-wrapping strip in a vacuum state;
s6: the connection between the edging strip and the blade is reinforced by rivets.
Example 3
In this embodiment, an edge covering device of the high-speed fan blade edge covering method in the basic embodiment 2 is provided, and referring to fig. 4, the high-speed fan blade edge covering device includes a base 4 and a conveyor belt 3 located above the base 4 and used for conveying the blade 1. A plurality of clamping pieces 31 for clamping the blade 1 are uniformly arranged on the conveyor belt 3. The base 4 is provided with a rubberizing seat 5 for rubberizing the edge of the blade and a sticking seat 7 for sticking the edging strip 2 and carrying out vacuum treatment along the conveying direction of the conveying belt 3. A telescopic rubberizing supporting rod 6 is arranged between the rubberizing seat 5 and the base 4, and a telescopic tightly-attached supporting rod 8 is arranged between the tightly-attached seat 7 and the base 4.
Referring to fig. 5, the main glue chamber 51, the glue chamber 52 with an opening at the upper part, and the capsule 57 with expansion and contraction functions are provided in the glue base 5, and the material of the capsule 57 in this embodiment is elastic rubber. The bottom of the main glue chamber 51 is connected with the bottom of the glue applying 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 both the overflow pipe 59 and the overflow pipe 58 are provided with electric control valves.
Further, two symmetrically distributed movable limiting blocks 53 are arranged at the upper part of the gluing chamber 52, the opposite surfaces of the movable limiting blocks 53 correspond to the two side surfaces of the edge-wrapping end of the blade 1, and elastic silica gel blocks are arranged on the opposite surfaces of the movable limiting blocks 53 and used for keeping the contact surfaces between the movable limiting blocks 53 and the blade 1 relatively sealed in the process that the blade 1 enters the gluing chamber 52.
Further, the movable limiting block 53 is movably connected with the glue applying seat 5 in the horizontal direction. Specifically, a set of symmetrically distributed slide ways 56 are arranged on the upper portion of the rubberizing seat 5, openings are formed in opposite ends of the slide ways 56, a sliding sealing plate 54 and a sealing spring 55 are arranged in the slide ways 56, the sealing spring 55 is located between the sliding sealing plate 54 and the non-opening end of the slide ways 56, and the sliding sealing plate 54 is fixedly connected with a movable limiting block 53. Under the action of the sealing spring 55, the two movable limiting blocks 53 are attached to each other, and the movable limiting blocks 53 and the sliding sealing plate 54 form a seal on the upper portion of the gluing chamber 52.
When the blade 1 passes through the rubberizing seat 5, the rubberizing seat 5 slowly moves upwards under the drive of the rubberizing supporting rod 6, the blade 1 enters between the two movable limiting blocks 53 and pushes the movable limiting blocks 53 to separate the two movable limiting blocks 53, and the edge-wrapping end of the blade 1 enters the rubberizing chamber 52. At this time, the electrically controlled valve on the flow tube 59 is closed, the electrically controlled valve on the overflow tube 58 is opened, and the blade presses the adhesive in the adhesive applying chamber 52 into the capsule 57. Referring to fig. 6, when the movable stopper 53 reaches the limit position of the horizontal movement, the depth of the edge to be covered end of the blade into the gluing chamber 52 corresponds to the target glue line of the blade 1, and the glue is glued. Subsequently, the electric control valve on the overflow pipe 58 is closed, the rubberizing seat 5 is quickly moved downwards through the rubberizing supporting rod 6, the blade 1 quickly leaves the rubberizing chamber 52, the two movable limiting blocks 53 slowly approach, and the rubberizing chamber 52 is sealed again. At this time, the electronic control valves on the flow pipe 59 and the overflow pipe 58 are opened, the adhesive in the capsule 57 is extruded into the adhesive applying chamber 52, and the adhesive in the main adhesive chamber 51 continues to enter the adhesive applying chamber 52, so that the adhesive in the adhesive applying chamber 52 is kept sufficient.
It should be noted that, in the above process, after the blade 1 is glued, the blade needs to leave the gluing chamber 52 rapidly, so as to prevent the glue 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 arranged between the sliding sealing plate 54 and the slideway 56 of the rubberizing seat 5. Referring to fig. 7, a flexible protruding corrugated plate may be disposed at the contact surface of the sliding sealing plate 54 and the slideway 56, and a groove is disposed on the corrugated plate, wherein the side surface of the groove, which is close to the movable stopper 53, is declined toward the sealing spring 55, and the side surface of the groove, which is close to the sealing spring 55, is perpendicular to the movable stopper 53. A low friction is formed between the sliding seal plate 54 and the slideway 56 when the sliding seal plate 54 moves in a direction approaching the seal spring 55, and a high friction is formed between the sliding seal plate 54 and the slideway 56 when the sliding seal plate 54 moves in a direction separating from the seal spring 55.
Referring to fig. 8, a housing 71 with an upper opening is disposed inside the close-fitting seat 7, and the housing 71 is detachably connected with the close-fitting seat 7. The opening of the housing 71 is fixedly provided with a sealing stopper 72, and the opposite surfaces of the sealing stopper 72 correspond to the two side surfaces of the edge-wrapping end of the blade 1, so as to maintain the relative sealing of the contact surface between the sealing stopper 72 and the blade 1 during the process of entering the housing 71 by the blade 1. Two symmetrically distributed bags Bian Caoban and negative pressure contraction rods 75 are arranged in the shell 71, and a V-shaped groove is formed between the two edge wrapping groove plates 73 and can be used for placing the edge wrapping strips 2. The bottom of the bag Bian Caoban 73 is rotatably connected with the inside of the shell 71 through a pin shaft, the bottom of the bag Bian Caoban is connected with the inside of the shell 71 through a negative pressure contraction rod 75, the shell 71 is fixedly connected with a sub-vacuum tube 74, the sub-vacuum tube 74 is detachably connected with the main vacuum tube 9 on the close-fitting 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 form a vacuum state. Wherein the branch vacuum tube 74 and the main vacuum tube 9 are respectively provided with an electric control valve.
When the negative pressure contraction rod 75 is in an extending state, the bag Bian Caoban is attached to the sealing limiting block 72, and the V-shaped groove shape between the two edge-wrapping groove plates 73 is identical to the appearance of the edge-wrapping strip 2; when the negative pressure shrinkage rod 75 is in a shrinkage state, the angle corresponding to the V-shaped groove between the two edge-wrapping groove plates 73 is increased, the edge-wrapping Bian Caoban and the sealing limiting block 72 are not attached, and meanwhile, the edge-wrapping groove plates 73 and the edge-wrapping strip 2 are not attached.
Referring to fig. 9, the negative pressure contracting rod 75 comprises a cylinder 751, a piston 752 disposed in the cylinder 751, a supporting 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 edge covering groove plate 73 by a connecting rod 756, and the top of the cylinder 751 is provided 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 lever 75 is in an extended 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 balanced state; when a vacuum state is formed inside the housing 71, the pressure outside the high-pressure air bladder 754 becomes weak, the high-pressure air bladder 754 expands, the piston 752 moves downward, and the negative pressure contraction rod 75 contracts.
When the blade 1 passes through the close-fitting seat 7, the close-fitting seat 7 moves upwards under the drive of the close-fitting supporting rod 8, and when the sealing limiting block 72 is in full contact with the blade 1 in the shell 71 at one end of the blade 1, which is adhered with the adhesive, is attached to the edge-covering strip 2 placed between the edge-covering groove plates 73, and at the moment, the attachment of the edge-covering strip 2 on the edge part of the blade 1 is completed. Subsequently, the electric control valves of the branch vacuum pipe 74 and the main vacuum pipe 9 are opened, the branch vacuum pipe 74 and the main vacuum pipe 9 are matched with each other to perform vacuumizing treatment on the inside of the shell 71, so that a vacuum state is formed inside the shell 71, the pressure outside the high-pressure air bag 754 weakens, the high-pressure air bag 754 expands, the piston 752 moves downwards, the negative pressure shrinkage rod 75 shrinks, the bag Bian Caoban 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 discharged conveniently, and the edge wrapping strip 2 can be tightly attached to the blade 1 in a vacuum environment with less air bubbles. After the air bubble is removed, the electric control valves of the branch vacuum pipe (74) and the main vacuum pipe (9) are closed. The close-fitting seat 7 is driven to move downwards by the close-fitting support rod, the shell 71 is separated from the close-fitting seat 7, the vacuum separating pipe (74) is separated from the main vacuum pipe (9), and the vacuum state inside the shell 71 is maintained.
When the adhesive between the wrapping strip 2 and the blade 1 is completely dried, the electric control valve of the vacuum dividing pipe 74 is opened, the shell 71 is removed from the blade 1, at this time, the shell 71 is communicated with the atmosphere, the pressure outside 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 is extended, and the bag Bian Caoban 73 returns to place the next wrapping strip 2.
Further, a curing support rod 10 is arranged on the base 4, a heat curing sleeve 11 is arranged at the top of the curing support rod 10, an opening is arranged at the upper part of the heat curing sleeve 11, and the inside of the heat curing sleeve 11 is matched with the shell 71. When the blade drives the shell 71 to pass through the thermosetting sleeve 11, the thermosetting support rod 10 stretches to enable the thermosetting sleeve 11 to rise, the shell 71 enters the thermosetting sleeve 11, the heating wires are arranged in 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 thermosetting treatment temperature is 80-90 ℃, and stable and effective adhesion between the blade 1 and the edge covering strip 2 is realized.
The working process of the high-speed fan blade edge covering device in the embodiment is as follows:
first, the blade 1 is clamped on the clamping member 31, and the conveyor belt 3 horizontally transports the blade 1.
And secondly, when the blade 1 passes through the gluing seat 5, the gluing seat 5 slowly moves upwards under the drive of the gluing support rod 6, the blade 1 enters between the two movable limiting blocks 53 and pushes the movable limiting blocks 53 to separate the two movable limiting blocks 53, the edge-to-be-glued end of the blade 1 enters the gluing chamber 52, when the movable limiting blocks 53 reach the limit position of horizontal movement, the depth of the edge-to-be-glued end of the blade entering the gluing chamber 52 corresponds to the target gluing line of the blade 1, the gluing of the gluing is finished, and then the blade 1 rapidly leaves the gluing chamber 52.
And thirdly, the blade 1 continues to move to the cling seat 7, the cling seat 7 moves upwards under the drive of the cling support rod 8, and when the sealing limit block 72 is in full contact with the blade 1 in the shell 71 at one end of the blade 1, which is stuck with the adhesive, the end of the blade 1, which is stuck with the adhesive, is stuck with the binding strip 2 placed between the binding groove plates 73, and at the moment, the binding of the binding strip 2 at the edge of the blade 1 is completed.
And fourthly, the inside of the shell 71 is vacuumized through the vacuum separating tube 74, so that the vacuum state is formed inside the shell 71, the pressure outside the high-pressure air bag 754 is weakened, the high-pressure air bag 754 is expanded to enable the negative-pressure shrinkage rod 75 to shrink, the bag Bian Caoban is not adhered to the edge covering strip 2, air between the edge covering strip 2 and the blade 1 is conveniently discharged, the edge covering strip 2 can be tightly adhered to the blade 1 in a vacuum environment, few air bubbles are mixed, after the air bubbles are discharged, the vacuum separating tube 74 is closed, the inside of the shell 71 is kept vacuum, and the shell 71 is separated from the close-fitting seat 7.
And fifthly, when the blade drives the shell 71 to pass through the thermosetting sleeve 11, the thermosetting support rod 10 stretches to enable the thermosetting sleeve 11 to rise, 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 thermosetting treatment temperature is 80-90 ℃, and stable and effective adhesion between the blade 1 and the edge covering strip 2 is realized.
Sixth, when the adhesive between the wrapping strip 2 and the blade 1 is completely dried, the vacuum dividing pipe 74 is opened, and the housing 71 is opened to the atmosphere, and the housing 71 is removed from the blade 1.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. A device for wrapping metal edges of blades of a high-speed fan is characterized in that,
the metal binding comprises a V-shaped strip binding main body (21), two wings of the binding main body (21) are provided with dividing grooves (23), patches (22) are arranged between the dividing grooves (23), and reinforcing holes (24) are formed in the patches (22);
the metal edge wrapping method comprises the following steps:
s1: coating a layer of adhesive on the edge of the blade;
s2: adhering the edge wrapping strip to the edge wrapping position of the blade;
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 sealed space of the edge covering strip, and discharging bubbles between the edge covering strip and the blade to enable the edge covering strip to be closely adhered to the blade;
s5: thermally curing the adhesive between the blade and the edge-wrapping strip in a vacuum state;
s6: the connection between the edge covering strip and the blade is reinforced by rivets;
the edge covering device comprises 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 a rubberizing seat (5) used for rubberizing the edge of the blade, an attaching seat (7) used for attaching an edge covering strip (2) and carrying out vacuum treatment and a thermosetting sleeve (11) used for thermosetting adhesives along the conveying direction of the conveyor belt (3);
the device comprises a shell (71) with an opening at the upper part, wherein the upper part of the shell is provided with a sealing limit block (72), the opening of the shell (71) is provided with two symmetrically distributed bags Bian Caoban (73) and a negative pressure contraction rod (75), a V-shaped groove is formed between the two bags Bian Caoban (73), the bottom of each bag Bian Caoban (73) is rotatably connected with the inside of the shell (71) through a pin shaft, the bottom of each bag Bian Caoban (73) is connected with the inside of the shell (71) through a negative pressure contraction rod (75), the shell (71) is fixedly connected with a vacuum separating pipe (74), and the vacuum separating pipe (74) is connected with a main vacuum pipe (9) on the corresponding tight seat (7);
the negative pressure shrinkage rod (75) comprises a cylinder body (751), a piston (752) arranged in the cylinder body (751), a supporting spring (753) arranged between the piston (752) and the bottom of the cylinder body (751) and a high-pressure air bag (754) arranged between the piston (752) and the top of the cylinder body (751), the piston (752) is fixedly connected with the bottom of the edge-covering groove plate (73) through a connecting rod (756), and the top of the cylinder body (751) is provided with an air hole (755) used for communicating the upper space of the piston (752) in the cylinder body (751) with the inner space of the shell (71);
when the blade (1) passes through the attaching seat (7), the attaching seat (7) moves upwards under the drive of the attaching support rod (8), one end of the blade (1) with the adhesive stretches into the shell (71), when the sealing limit block (72) is in full contact with the blade (1), one end of the blade (1) with the adhesive is attached to the edge covering strip (2) arranged between the edge covering groove plates (73), at the moment, the edge covering strip (2) is attached to the edge part of the blade (1), then, the electric control valves of the vacuum separating pipe (74) and the main vacuum pipe (9) are opened, the vacuum pumping treatment is carried out on the inside of the shell (71) by the mutual matching of the vacuum separating pipe (74) and the main vacuum pipe (9), so that the inside of the shell (71) forms a vacuum state, the external pressure of the high-pressure air bag (754) is weakened, the high-pressure air bag (754) is expanded, the piston (752) moves downwards, the negative-pressure shrinkage rod (75) is shrunk, at the moment, the edge covering Bian Caoban (73) is not attached to the sealing limit block (72) and the edge covering strip (2) is not attached to the edge covering strip (2), and air bubbles can not be conveniently discharged between the edge covering strip (2) and the blade (1) and the edge covering strip (2) and the air can be attached to the air tightly and attached to the edge covering strip (2; after the air bubble is removed, the electric control valves of the branch vacuum pipe (74) and the main vacuum pipe (9) are closed; the close support rod drives the close seat (7) to move downwards, the shell (71) leaves the close seat (7), the vacuum separating tube (74) is separated from the main vacuum tube (9), and the vacuum state inside the shell (71) is maintained.
2. The taping device according to claim 1, wherein when the pack Bian Caoban (73) is attached to the sealing stopper (72), the V-shaped groove between the two packs Bian Caoban (73) is adapted to the shape of the taping strip (2).
3. The edge covering device according to claim 2, characterized in that 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 seat (5), the bottom of the main glue chamber (51) is connected with the bottom of the glue chamber (52) through a flow pipe (59), and the capsule (57) is connected with the glue chamber (52) through an overflow pipe (58);
two symmetrically distributed movable limiting blocks (53) are arranged on the upper portion of the gluing chamber (52), the opposite faces of the movable limiting blocks (53) correspond to the two side faces of the edge-wrapping end of the blade (1), and the movable limiting blocks (53) are movably connected with the gluing seat (5).
4. A hemming device according to claim 3, wherein a set of symmetrically distributed slide ways (56) are arranged on the upper portion of the rubberizing seat (5), openings are arranged at opposite ends of the slide ways (56), a sliding sealing plate (54) and a sealing spring (55) are arranged in the slide ways (56), the sealing spring (55) is located between the connecting sliding sealing plate (54) and the non-opening end of the slide ways (56), and the sliding sealing plate (54) is fixedly connected with a movable limiting block (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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| CN114131945A (en) | 2022-03-04 |
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