WO2018230254A1 - Procédé de fabrication de ventilateur à flux transversal, et dispositif de fabrication de ventilateur à flux transversal - Google Patents

Procédé de fabrication de ventilateur à flux transversal, et dispositif de fabrication de ventilateur à flux transversal Download PDF

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Publication number
WO2018230254A1
WO2018230254A1 PCT/JP2018/019245 JP2018019245W WO2018230254A1 WO 2018230254 A1 WO2018230254 A1 WO 2018230254A1 JP 2018019245 W JP2018019245 W JP 2018019245W WO 2018230254 A1 WO2018230254 A1 WO 2018230254A1
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WO
WIPO (PCT)
Prior art keywords
fan
cross flow
mold
flow fan
manufacturing
Prior art date
Application number
PCT/JP2018/019245
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English (en)
Japanese (ja)
Inventor
佑規 伊東
古川　仁一
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2019525238A priority Critical patent/JP6708361B2/ja
Publication of WO2018230254A1 publication Critical patent/WO2018230254A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling

Definitions

  • the present application relates to a manufacturing method and a manufacturing apparatus of a cross flow fan in which a plurality of thermoplastic resin moldings are welded and assembled.
  • resin molded bodies that are integrally molded by a mold, such as a disc and a large number of blades, are prepared (resin molding process), and then superimposed in the direction of the rotation axis of the fan to form these resin moldings
  • the resin molded bodies are welded together by applying ultrasonic vibration while pressing the assembly of bodies in the direction of the rotation axis (ultrasonic welding process).
  • the distortion after the ultrasonic welding process is caused by the distortion of the aggregate after the ultrasonic welding process, thereby removing the distortion.
  • the hollow structure fan parts obtained by gas-assist molding can produce cross flow fan components (molded products) with good melt fluidity, eliminating the need for annealing after the ultrasonic welding process. Is known (see, for example, Patent Document 1).
  • the annealing of the entire assembly of the resin molded bodies after ultrasonic welding must be matched with the fan components that require the annealing temperature to be set low, so that it is necessary to set the annealing time longer and the manufacturing efficiency is impaired.
  • the gas assist molding it is necessary to stop the injection of the resin and to switch to the gas injection before the mold product part is completely filled with the resin.
  • the injection nozzle is plugged with a needle valve or the like. Since the resin and gas injection operation stops during this operation, the resin cools and solidifies in the case of a thin wall such as a blade of a crossflow fan.
  • the manufacturing method of the cross flow fan disclosed in the present application is as follows. It has a first step of injecting resin into the mold and molding the fan parts, and a second step of ultrasonically welding and laminating the molded fan parts without stopping at the same rotational speed. .
  • a cross flow fan with less internal stress can be obtained without impairing the manufacturing efficiency.
  • FIG. 3 is a plan view of the cross flow fan according to the first embodiment.
  • FIG. 3 is a diagram illustrating a manufacturing flow of the cross flow fan according to the first embodiment. It is a figure explaining the metal mold
  • FIG. It is a schematic block diagram of the ultrasonic welding apparatus for assembling the cross flow fan of Embodiment 1, FIG. 4A shows a front view, and FIG. 4B shows a side view. It is an enlarged view of the table of the ultrasonic welding apparatus of FIG. It is a figure explaining operation
  • FIG. 10 is a diagram showing a manufacturing flow of the cross flow fan of the second embodiment. It is a figure which shows the result of the durability test of the crossflow fan of Embodiment 2.
  • FIG. 6 is a schematic configuration diagram of a mold for molding a fan part of a crossflow fan according to a fourth embodiment. It is a front view of the plate part of the metal mold
  • FIG. 1 is a diagram of a cross flow fan.
  • the cross-flow fan has an end plate 1 as a fan component, an intermediate fan 2 in which blades are integrated with the plate, and a blade in which blades are integrated with a plate provided with a fitting portion with a rotating shaft. It is comprised with the fan 3.
  • FIG. 2 is a diagram showing a manufacturing flow of the cross flow fan according to the first embodiment. First, as step ST1, fan parts are manufactured.
  • the medium for raising the mold temperature may be water vapor, hot water, hot oil, or the like having a high medium temperature.
  • step ST2 the molded product manufactured in step ST1 is assembled into a cross flow fan.
  • 4 is a schematic configuration diagram of an ultrasonic welding apparatus 100 that is a manufacturing apparatus for assembling the cross flow fan according to Embodiment 1
  • FIG. 4A is a front view
  • FIG. 4B is a side view.
  • the ultrasonic welding apparatus 100 holds a fan component and moves the holding mechanism 10 in the vertical direction, a positioning mechanism 20 for positioning the fan component, and an ultrasonic wave for applying ultrasonic vibration to the fan component. It consists of a mechanism 30.
  • the holding mechanism 10 includes a table 11 that is inserted so that the rotation shaft portion 1a of the end plate 1 shown in FIG.
  • the table 11 faces downward, and a moving mechanism 12 that moves the table 11 perpendicularly to the direction of the ultrasonic mechanism 30.
  • the connecting mechanism 13 is used to connect the table 11 to the moving mechanism 12.
  • the table 11 has a structure in which a bearing 14 is attached to the insertion portion of the rotating shaft portion 1a, and the end plate 1 can freely rotate around the rotating shaft portion 1a.
  • the moving mechanism 12 is a linear servo motor in FIG. 4B, but if the table 11 is a mechanism that can move to a desired position at a desired speed, a servo motor combined with a linear guide or a ball screw mechanism, or an air cylinder It may be.
  • the positioning mechanism 20 is parallel to the shaft center of the bearing 14 shown in FIG. 5 and is provided with at least three columnar guide bars 21 and a rotation for rotating the bearings 22 and the guide bars 21 of the guide bars 21. It consists of a mechanism 23.
  • the guide bar 21 is attached to an equipment frame (not shown) via a moving mechanism 24 so that when the fan parts are ultrasonically welded, the work of attaching the fan parts to the table 11 can be opened and closed without disturbing the guide bar 21. It is configured.
  • the rotation mechanism 23 is preferably a motor that can easily control the number of rotations when ultrasonic welding of a plurality of types of fan parts, but may be a rotary cylinder when only specific fan parts are ultrasonically welded.
  • the ultrasonic mechanism 30 includes a vibrator 31 of an ultrasonic welder, a tool horn 32 fixed to the vibrator 31, and a moving mechanism 33 of the vibrator 31.
  • the tool horn 32 is provided concentrically with the axis of the bearing 14 provided on the table 11.
  • the moving mechanism 33 is an air cylinder in the figure.
  • the vibrator 31 is a device that can move to a desired position at a desired speed, a servo motor combined with a linear guide or a ball screw mechanism, or a linear servo motor. It may be.
  • FIG. 6 As shown in FIG. 6A, the end plate 1 is attached to the table 11 with the rotating shaft portion 1 a facing down. Thereafter, the intermediate fan 2 is placed on the end plate 1 with the blade portion 2a facing down.
  • the guide rod 21 is advanced by the moving mechanism 24, and the axial center of the intermediate fan 2, the axial center of the tool horn 32, and the axial center of the bearing 14 provided on the table 11 are aligned.
  • the tool horn 32 is lowered and pressurizes the intermediate fan 2. Thereafter, as shown in FIG.
  • the guide rod 21 is rotated by the rotation mechanism 23, whereby the end plate 1 and the intermediate fan 2 are rotated at the same rotation speed.
  • the vibrator 31 is vibrated by an oscillator (not shown), so that the tool horn 32 is also vibrated, the intermediate fan 2 is vibrated, and the blade portion of the intermediate fan 2
  • the tip of 2a and the end plate 1 are ultrasonically welded.
  • the pressure applied by the tool horn 32 and the time during which the tool horn 32 vibrates are such that sufficient welding strength can be obtained between the blade portion 2a and the end plate 1, and the pressure and vibration time are determined by the cross flow fan. It is determined by size, number of parts, etc.
  • the pressure is 0.
  • a sufficient welding strength can be obtained in about 2 to 0.7 MPa and a vibration time of about 0.5 to 3 seconds.
  • the tool horn 32, the guide bar 21, and the table 11 are returned to the original position, which is the initial position, in the reverse procedure.
  • the next intermediate fan 2 is stacked on the already welded intermediate fan 2, and finally the end fan 3 is welded.
  • the rotation mechanism 23 is a motor
  • the guide rod 21 can be freely rotated in a state where the brake of the motor is released, and the fan component is directly applied to the fan component for welding by, for example, wind. May be rotated.
  • the crossflow fan since the crossflow fan is rotating when pressurized and vibrated by the tool horn 32, it is compared with a case where ultrasonic waves are used while the crossflow fan is fixed so as not to move. Thus, it is possible to suppress the force in the rotational direction unnecessary for the ultrasonic welding from being applied to the cross flow fan, and to reduce the internal stress caused by the ultrasonic welding.
  • the rotational speed at which the cross flow fan is ultrasonically welded is such that internal stress due to ultrasonic welding is not generated, and the speed is determined by the size of the crossflow fan, the number of parts, and the like.
  • the rotational speed is 60 rpm. It is possible to suppress internal stress due to ultrasonic welding. Furthermore, by incorporating a device that measures the internal stress of the fan component after ultrasonic welding (for example, an X-ray diffractometer) via a control circuit, the rotational speed of the fan component is automatically controlled so that the internal stress is minimized. And you can assemble a cross flow fan.
  • AS acryl-styrene
  • the results of the durability test of the cross flow fan manufactured in such a manufacturing flow are shown in FIG.
  • the durability test the amount of deformation in the rotation direction when rotating at 2000 ° C. or less at 60 ° C. or less was evaluated. According to FIG. 7, there is no significant difference in the amount of deformation between the case where the annealing process is performed by the manufacturing method according to the prior art and the case where the annealing method is not performed by the manufacturing method according to the first embodiment. It turns out that an annealing process is unnecessary.
  • FIG. FIG. 8 is a conceptual diagram showing the ultrasonic welding apparatus 200 when assembling the cross flow fan according to the second embodiment
  • FIG. 8A is a front view
  • FIG. 8B is a side view.
  • the fan parts end plate 1, intermediate fan 2, and end fan 3 prepared by the method described in the first embodiment are assembled by the ultrasonic welding apparatus 200 shown in FIG.
  • the ultrasonic welding apparatus 200 includes a holding mechanism 40 for holding and moving the fan component in the vertical direction, a positioning mechanism 50 for positioning the fan component, and an ultrasonic mechanism 30 for applying ultrasonic vibration to the fan. Consists of.
  • the holding mechanism 40 connects the table 41 inserted so that the rotation shaft portion 1a of the end plate 1 faces downward, the moving mechanism 42 for moving the table 41 in the vertical direction, and the table 41 to the moving mechanism 42. And a rotating mechanism 44 that rotates the rotating shaft portion 1a of the end plate 1 held by the table 41 about the rotating shaft.
  • the moving mechanism 42 is a linear servo motor in FIG. 8B.
  • the table 41 is a device that can move to a desired position at a desired speed, a linear motor, a servo motor combined with a ball screw mechanism, or an air It may be a cylinder.
  • the rotation mechanism 44 is preferably a motor that can easily control the number of rotations when ultrasonic welding of a plurality of types of fan parts, but may be a rotary cylinder when only specific fan parts are ultrasonically welded.
  • 1 is provided with a mechanism for chucking the rotary shaft portion 1a of the end plate 1 shown in FIG.
  • the positioning mechanism 50 includes a cylindrical guide bar 51 provided in at least three locations in parallel with the rotation axis center of the rotation mechanism 44 and a support bar 53 that holds the guide bar 51 rotatably via a bearing 52.
  • the support bar 53 is attached to an equipment frame (not shown) via a moving mechanism 54, and can be opened and closed so that the guide bar 51 does not interfere with the work of attaching the fan part to the table 41 when the fan part is ultrasonically welded. It is configured as follows.
  • the ultrasonic mechanism 30 is the same as that described in the first embodiment.
  • FIG. 9A in FIG. 9 the end plate 1 is attached to the table 41 with the rotary shaft portion 1a facing down. Thereafter, the intermediate fan 2 is placed on the end plate 1 with the blade portion 2a facing down.
  • FIG. 9B the guide bar 51 is advanced by the moving mechanism 54, and the axis of the intermediate fan 2, the axis of the tool horn 32, and the axis of the rotating shaft of the rotating mechanism 44 are matched.
  • FIG. 9C the tool horn 32 is lowered to pressurize the intermediate fan 2. Thereafter, as shown in FIG.
  • the rotating shaft 1a of the end plate 1 is rotated by the rotating mechanism 44, whereby the end plate 1 and the intermediate fan 2 rotate at the same rotational speed.
  • the vibrator 31 is vibrated by an oscillator (not shown), so that the tool horn 32 is also vibrated, the intermediate fan 2 is vibrated, and the blade portion of the intermediate fan 2
  • the tip of 2a and the end plate 1 are ultrasonically welded.
  • the pressure applied by the tool horn 32 and the time during which the tool horn 32 vibrates are such that sufficient welding strength can be obtained between the blade portion 2a and the end plate 1, and the pressure and vibration time are determined by the cross flow fan. It is determined by size, number of parts, etc.
  • the pressure is 0.
  • Sufficient welding strength can be obtained in about 2 to 0.7 MPa and vibration time of 0.5 to 3 seconds.
  • the tool horn 32, the guide bar 51, and the table 41 are returned to the initial position, which is the initial position, in the reverse order of the described procedure.
  • the next intermediate fan 2 is stacked on the already welded intermediate fan 2, and finally the end fan 3 is welded.
  • the tool horn 32, the guide bar 51, and the table 41 are returned to the origin every time they are welded.
  • the next fan part can be inserted in the middle. You can stop it.
  • the fan component for welding may be rotated directly by applying an external force, for example, with wind. .
  • FIG. 10 is a diagram illustrating a manufacturing flow of the cross flow fan according to the third embodiment.
  • the fan components end plate 1, intermediate fan 2, end fan 3
  • the fan components are formed by a normal forming method in which the mold temperature is not changed by the process (step ST101).
  • an annealing process is performed on the fan components alone before assembly by ultrasonic welding (step ST102).
  • the cross flow fan is assembled by ultrasonic welding using the ultrasonic welding apparatuses 100 and 200 shown in the first or second embodiment (step ST103).
  • FIG. 11 shows the result of the durability test of the cross flow fan manufactured in the manufacturing flow as shown in FIG. In the durability test, the amount of deformation in the rotation direction when rotating at 2000 ° C. at 60 ° C. was evaluated.
  • the annealing is performed after welding, and according to the third embodiment, the annealing is performed with the ultrasonic welding apparatuses 100 and 200 after annealing the fan components alone. It can be seen that there is no significant difference in the amount of deformation between the method and the manufacturing method according to Embodiment 3 does not require the annealing process after the assembly of the crossflow fan.
  • Annealing conditions according to each fan component can be set by annealing the fan component alone as described above. That is, since a metal shaft is generally used for the rotating shaft portion 1a of the end plate 1, it is preferable to anneal at a low temperature in order to suppress the tilt of the shaft.
  • a boss is embedded in the terminal fan 3 so as to be assembled to the motor. Generally, a rubber boss is used in order to secure a tolerance for assembly in the motor. In order to suppress the deterioration of the rubber, it is preferable to anneal at a lower temperature than the intermediate fan 2.
  • the annealing time has to be lengthened because the temperature is set according to the fan component that requires the lowest temperature setting.
  • the annealing temperature can be increased for the intermediate fan 2, so that the annealing time can be shortened.
  • FIG. 12 shows an annealing condition when a cross-flow fan using AS (acrylic-styrene) resin mixed with 20% glass fiber is annealed in a batch processing thermostat. Since the annealing time of the intermediate fan 2 can be halved, productivity is improved. Needless to say, even in cases other than the annealing processing method described with reference to FIG. 12, such as an in-line annealing apparatus or an annealing method using infrared rays, each component can be processed in an optimal processing time.
  • AS acrylic-styrene
  • FIG. 13 is a diagram illustrating a manufacturing flow of the cross flow fan according to the fourth embodiment.
  • a fan component end plate 1, intermediate fan 2, end fan 3
  • a mold cavity that is opened in advance by a predetermined amount, and then the cavity is compressed (so-called injection compression molding).
  • FIGS. 14, 15 and 16 show the structure of a mold 60 for molding the fan component (the intermediate fan 2 in the example shown) in the fourth embodiment.
  • FIG. 14 is a cross-sectional view of the mold 60
  • FIG. 15 is a front view of the plate portion 64
  • the mold 60 includes a mold cavity of a fixed mold 61 and a movable mold 62.
  • the movable mold 62 is a base part 63, a plate part 64 fixed to the base part 63, and a compression that is fitted to the base part 63 so as to be able to rotate in the thickness direction of the blade part 2a (see FIG. 6 or FIG. 9). It comprises a fixed portion 66 fixed to the portion 65 and the base portion 63.
  • the plate part 64 is provided with a molding part 67 of the plate part of the intermediate fan 2 and a molding part 68a of the blade part 2a.
  • the forming portions 68, 68a, 68b, 68c of the blade portion 2a of the intermediate fan 2 are indicated by hatched portions in the drawing.
  • the compression portion 65 Before injecting the resin, as shown in FIG. 16A, the compression portion 65 is opened in a certain amount so that the molding portion 68b of the blade portion 2a formed by the compression portion 65 and the fixing portion 66 is thicker than the blade portion 2a. is there. After the resin is injected into the mold 60 and the molding portion 68 is filled with about 80%, the compression portion 65 rotates counterclockwise as shown in FIG. 16B and compresses the resin to fill the molding portion 68 with the resin. .
  • the shape of the molded part 68c formed by the compressed compression part 65 and the fixed part 66 after rotation matches the molded part 68a provided on the plate part 64, and is aligned in a straight line in the length direction of the blade part 2a. Yes.
  • means for rotating the compression unit 65 is not shown, if the rotation operation of the compression unit 65 can be finished before the resin injected into the mold 60 is cooled and solidified, a hydraulic cylinder, an air cylinder, or a slide mechanism can be used. Anything using the opening and closing operation of the mold may be used.
  • the mold 60 generally has the structure and functions necessary for the molding mold as appropriate.
  • step ST201 the molded product manufactured in step ST201 is ultrasonically welded by the ultrasonic welding apparatuses 100 and 200 shown in the first or second embodiment to assemble a cross flow fan (step ST202). Since the crossflow fan manufactured by such a procedure is composed of a molded product having a low internal stress as in the crossflow fan described in the first or second embodiment, an annealing process after assembly is not required. Needless to say, there are.

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Abstract

L'invention concerne un ventilateur à flux transversal dont une contrainte interne est réduite sans nuire à l'efficacité de fabrication. Pendant la fabrication du ventilateur à flux transversal, des composants de ventilateur (1, 2, 3) sont soudés et assemblés par ultrasons tout en étant mis en rotation autour d'un arbre rotatif de ventilateur. L'application d'une force sur le ventilateur à flux transversal dans une direction de rotation indésirable pour le soudage par ultrasons peut être supprimée, permettant de réduire une contrainte interne due au soudage par ultrasons.
PCT/JP2018/019245 2017-06-12 2018-05-18 Procédé de fabrication de ventilateur à flux transversal, et dispositif de fabrication de ventilateur à flux transversal WO2018230254A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019525238A JP6708361B2 (ja) 2017-06-12 2018-05-18 クロスフローファンの製造方法、及びクロスフローファンの製造装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017114873 2017-06-12
JP2017-114873 2017-06-12

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WO2018230254A1 true WO2018230254A1 (fr) 2018-12-20

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000064981A (ja) * 1998-08-19 2000-03-03 Mitsubishi Electric Corp ラインフローファン及びその製造方法及びその製造装置及び組み立て装置
JP2007040260A (ja) * 2005-08-05 2007-02-15 Daikin Ind Ltd 樹脂製クロスフローファン及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000064981A (ja) * 1998-08-19 2000-03-03 Mitsubishi Electric Corp ラインフローファン及びその製造方法及びその製造装置及び組み立て装置
JP2007040260A (ja) * 2005-08-05 2007-02-15 Daikin Ind Ltd 樹脂製クロスフローファン及びその製造方法

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JP6708361B2 (ja) 2020-06-10

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