WO2013103191A1 - Assembling apparatus of motor for assembling stator assembly to printed circuit board - Google Patents

Assembling apparatus of motor for assembling stator assembly to printed circuit board Download PDF

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Publication number
WO2013103191A1
WO2013103191A1 PCT/KR2012/009145 KR2012009145W WO2013103191A1 WO 2013103191 A1 WO2013103191 A1 WO 2013103191A1 KR 2012009145 W KR2012009145 W KR 2012009145W WO 2013103191 A1 WO2013103191 A1 WO 2013103191A1
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WO
WIPO (PCT)
Prior art keywords
stator assembly
stopper
tension pole
assembling
motor
Prior art date
Application number
PCT/KR2012/009145
Other languages
French (fr)
Inventor
Deok Kyu Lee
Original Assignee
New Motech Co.,Ltd.
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Filing date
Publication date
Application filed by New Motech Co.,Ltd. filed Critical New Motech Co.,Ltd.
Publication of WO2013103191A1 publication Critical patent/WO2013103191A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines

Definitions

  • the present invention relates to an assembling apparatus of a motor, and more particularly, to an assembling apparatus of a motor for assembling a stator assembly to a printed circuit board (hereinafter which is simply referred to as PCB) by means of an ultrasonic welder.
  • PCB printed circuit board
  • a motor largely includes a stator and a rotor.
  • the stator has coils wound therearound and is connected to external power to apply electric current to the coils.
  • the stator is insulated around the outer periphery thereof by means of insulators, and like this, the coupled portion among the stator, coils, and insulators is called 'stator assembly'.
  • a PCB is assembled to the stator assembly.
  • the stator assembly and the PCB are fastened to each other by means of a plurality of screws, and through bolts, further, their fastening force becomes rigid.
  • this inventor has proposed to develop an assembling apparatus of a motor for assembling the PCB onto the stator assembly by means of ultrasonic welding.
  • the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an assembling apparatus of a motor for assembling a stator assembly to a PCB that is capable of decreasing a defective rate occurring when the PCB is coupled to the stator assembly.
  • an assembling apparatus of a motor for assembling a stator assembly to a PCB including: a body; a rotary jig disposed on the top portion of the body in such a manner as to be connected to a rotary shaft of the motor and adapted to mount the stator assembly on which the PCB is located thereon; an ultrasonic welder having a welding nozzle positioned at a portion of the stator assembly mounted on the rotary jig; and a stopper adapted to pressurize the top portion of the stator assembly mounted on the rotary jig.
  • the assembling apparatus further includes an elevation plate adapted to be moved upwardly and downwardly along rails disposed on one side of the body, and the ultrasonic welder and the stopper are connected to the elevation plate in such a manner as to be moved together with the upward and downward movements of the elevation plate.
  • the stopper is connected to a tension pole around which a spring is fitted, and the tension pole is connected to a tension pole guide connected to the elevation plate.
  • the stopper has a nozzle positioning portion formed on one end thereof so as to place one of a plurality of welding protrusions of the stator assembly thereon.
  • the assembling apparatus of the motor for assembling the stator assembly to the PCB that is capable of decreasing a defective rate and improving the productivity thereof.
  • FIG.1 is a side view showing an assembling apparatus of a motor for assembling a stator assembly to a PCB by means of ultrasonic welding according to the present invention.
  • FIG.2 is a plane view showing the stator assembly to be insertedly fitted to the assembling apparatus according to the present invention.
  • FIGS.3 and 4 are exemplary views showing examples of the stopper of the assembling apparatus according to the present invention.
  • FIG.5 is a plane view showing the shape of the stopper of the assembling apparatus according to the present invention.
  • FIG.1 is a side view showing an assembling apparatus of a motor for assembling a stator assembly to a PCB by means of ultrasonic welding according to the present invention.
  • an assembling apparatus of a motor for assembling a stator assembly to a PCB largely includes a body 1, a rotary jig 2, an ultrasonic welder 3, a stopper 4, an elevation plate 5 and a cylinder 6.
  • the body 1 has a side wall 11 disposed on one side of the top portion thereof, and a top plate 12 is disposed on the top end of the side wall 11, so that when viewed from the side, the body 1, the side wall 11 and the top plate 12 have an approximately ' ⁇ '-like shape.
  • the rotary jig 2 is disposed on the center portion of the top portion of the body 1, and a rail 13 is mounted on the side wall 11.
  • a stator assembly (not shown in FIG.1) to which the PCB is coupled is mounted on the top portion of the rotary jig 2.
  • the rail 13 of the side wall 11 serves as a guide capable of allowing the elevation plate 5 to be moved upwardly and downwardly.
  • the cylinder 6 is mounted on the top plate 12 to provide a driving force capable of driving the elevation plate 5 upwardly and downwardly.
  • the rotary jig 2 on which the stator assembly is mounted, is coupled to a rotary shaft 22 of a motor 21 disposed on the underside of the body 1 and is thus rotatable on the top portion of the body 1.
  • the motor 21 is desirably used as a servo motor capable of controlling a rotary angle at a given angle.
  • the rotary jig 2 is rotated by means of the operation of the motor 21 to allow a portion of the stator assembly where ultrasonic welding is performed to be accurately positioned under a welding nozzle 31 of the ultrasonic welder 3.
  • the ultrasonic welder 3 oscillates ultrasonic waves to allow the end portion of the welding nozzle 31 to momentarily reach a high temperature, thereby melting the portion of the stator assembly to be welded.
  • the ultrasonic welder 3 is electrically connected to an ultrasonic oscillator (not shown) mounted on the body 1.
  • the welding nozzle 31 is momentarily heated by means of the ultrasonic welder 3.
  • the portion of the stator assembly welded by means of the welding nozzle 31 will be explained with reference to FIG.2.
  • the ultrasonic welder 3 is moved upwardly and downwardly, and to perform the upward and downward movements of the ultrasonic welder 3, it is coupled to the elevation plate 5 in such a manner as to be moved upwardly and downwardly through the upward and downward movements of the elevation plate 5.
  • the stopper 4 serves to fix and press the stator assembly mounted on the rotary jig 2 and the PCB disposed on the top portion of the stator assembly. While the welding nozzle 31 of the ultrasonic welder 3 is melting the welding protrusions formed on the insulator of the stator assembly so as to fix the stator assembly to the PCB, that is, the stopper 4 fixes and presses the stator assembly and the PCB to prevent their movement. So as to perform the pressing, the stopper 4 should perform the upward and downward movements, and thus, the stopper 4 is disposed on the end portion of a tension pole 41.
  • the tension pole 41 conducts upward and downward movements along a tension pole guide 43 performing the upward and downward movements together with the elevation plate 5.
  • the tension pole guide 43 may be directly coupled to the elevation plate 5 to perform the upward and downward movements together with the elevation plate 5, and as shown in FIG.1, it is coupled to a tension pole support rod 52 to which the elevation plate 5 is connected.
  • the tension pole 41 is coupled to the interior of the tension pole guide 43 in such a manner as to be moved upwardly and downwardly, so that it performs the upward and downward movements together with the tension pole guide 43. If the tension pole guide 43 is moved downwardly, the tension pole 41 is descended, so that the stopper 4 coupled to the end of the tension pole 41 presses the PCB disposed on the stator assembly. At this time, the tension pole 41 is inserted into the tension pole guide 43, and as a spring 42 fitted around the tension pole 41 is compressed, the stopper 4 applies a pressure to the PCB, thereby fixing the PCB and the stator assembly to each other, without any movement.
  • the welding nozzle 31 of the ultrasonic welder 3 is brought into contact with the portion of the stator assembly to be welded and melts a portion of the insulator, that is, one of the welding protrusions, thereby conducting the welding operation momentarily.
  • the elevation plate 5 is moved upwardly, and accordingly, the ultrasonic welder 3 and the stopper 4 are raised. In this state, the rotary jig 2 is rotated to a given angle to allow the welding protrusion to be welded this time to be located under the welding nozzle 31. Next, the elevation plate 5 is moved downwardly, and the above-mentioned welding process is conducted again. If the above processes are repeatedly conducted by the number of welding protrusions, the welding fixation of the PCB is completed.
  • the elevation plate 5 is connected to a shaft 61 of the cylinder 6 in such a manner as to be moved upwardly and downwardly by means of the driving of the shaft 61 of the cylinder 6.
  • the elevation plate 5 has the ultrasonic welder 3 mounted thereon and is connected directly to the tension pole guide 43 or connected to the tension pole guide 43 via the tension pole support rod 52. Accordingly, the ultrasonic welder 5 and the tension pole guide 43 perform the upward and downward movements together with the elevation plate 5.
  • the elevation plate 5 has a rail holder 51 mounted at one side thereof, and the rail holder 51 guides the upward and downward movements on a given track along the rail 13 mounted vertically with respect to the side wall 11 of the body 1.
  • the cylinder 6 is mounted on the top plate 12 of the body 1 to allow the elevation plate 5 to be moved upwardly and downwardly.
  • the cylinder 6 serves to activate the upward and downward movements of the shaft 61
  • the cylinder 6 used in the present invention includes a device for driving the upward and downward movements of the shaft 61 such as a pneumatic cylinder, hydraulic cylinder, motor, and the like.
  • the shaft 61 is connected to the elevation plate 5, so that the upward and downward movements of the shaft 61 are transmitted to the upward and downward movements of the elevation plate 5.
  • FIG.2 is a plane view showing the stator assembly to be insertedly fitted to the assembling apparatus according to the present invention.
  • the stator assembly 7 adopted in the present invention largely includes a stator 71, an insulator 72 and a plurality of welding protrusions 73.
  • the stator 71 of the stator assembly 7 is surrounded with the insulator 72, and the plurality of welding protrusions 73 are spaced apart from each other on the outer periphery of the insulator 72.
  • the welding protrusions 73 are made of an insulating plastic material in the same manner as the insulator 72, and the PCB and the stator assembly are coupled to each other by means of the ultrasonic welding. Three welding protrusions 73 are shown in FIG.2, but, of course, the number of welding protrusions is not limited thereto.
  • the three welding protrusions 73 are equally spaced apart from each other. They are spaced apart from each other in such a manner as to have a distance of 120 degrees from the center of the circle constituting the stator 71, and thus, as the rotary jig 2 is rotated by 120 degrees, the ultrasonic welding for them is performed.
  • FIGS.3 and 4 are exemplary views showing examples of the stopper of the assembling apparatus according to the present invention.
  • the stopper 4 is connected to the end of the lower portion of the tension pole 41, and the upward and downward movements of the tension pole 41 is guided in the interior of the tension pole guide 43.
  • the tension pole support rod 52 serves to connect the tension pole guide 43 to the elevation plate 5, and of course, the tension pole guide 43 may be connected directly to the elevation plate 5, without the installation of the tension pole support rod 52.
  • the tension pole 41 may be provided in a form of one pair, as shown in FIG.4.
  • the tension pole 41 is surrounded with the spring 42.
  • the spring 42 is disposed between the stopper 4 and the tension pole guide 43 in such a manner as to apply a pressure to the stopper, thereby pushing the stopper 4 downwardly. If an upwardly pushing pressure is applied to the stopper 4, the tension pole 41 is moved upwardly along the tension pole guide 43. At this time, the spring 42 is compressed to further push the stopper 4 downwardly, thereby permitting the PCB and the stator assembly to be maintained at a rigidly fixed state during the welding operation. If the tension pole guide 43 is raised, the compressed state of the spring 42 is released to have the shape as shown in FIGS.3 and 4. If the tension pole guide 43 is moved upwardly in the state where no force is applied to the stopper 4, the tension pole 41 is raised, and contrarily, if the tension pole guide is moved downwardly, the tension pole 41 is descended together.
  • FIG.5 is a plane view showing the shape of the stopper of the assembling apparatus according to the present invention.
  • the stopper 4 is connected on one side thereof to the tension pole 41 and has a nozzle positioning portion 4a formed on the other side thereof.
  • One of the welding protrusions 73 of the stator assembly 7 is positioned at the inside of the nozzle positioning portion 4a.
  • the welding nozzle 31 is brought into contact with the positioned welding protrusion 73, and in this state, the welding operation is performed.
  • the plane of the stopper 4 desirably has such a size capable of surrounding most of the plane area of the PCB, and so as to perform the welding operation, in this case, the nozzle positioning portion 4a is disposed on the portion where the welding protrusion 73 is located. If the stopper 4 has a relatively small size, that is, if the welding protrusion 73 is exposed to the outside irrespective of the size of the stopper 4, there is no need for forming the nozzle positioning portion 4a on the stopper 4.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The present invention relates to an assembling apparatus of a motor (21) for assembling a stator assembly (7) to a PCB, the assembling apparatus including: a body (1); a rotary jig (2) disposed on the top portion of the body (1) in such a manner as to be connected to a rotary shaft (22) of the motor (21) and adapted to mount the stator assembly (7) on which the PCB is located thereon; an ultrasonic welder (3) having a welding nozzle (31) positioned at a portion of the stator assembly (7) mounted on the rotary jig (2); and a stopper (4) adapted to pressurize the top portion of the stator assembly (7) mounted on the rotary jig (2).

Description

ASSEMBLING APPARATUS OF MOTOR FOR ASSEMBLING STATOR ASSEMBLY TO PRINTED CIRCUIT BOARD
The present invention relates to an assembling apparatus of a motor, and more particularly, to an assembling apparatus of a motor for assembling a stator assembly to a printed circuit board (hereinafter which is simply referred to as PCB) by means of an ultrasonic welder.
In general, a motor largely includes a stator and a rotor. The stator has coils wound therearound and is connected to external power to apply electric current to the coils. The stator is insulated around the outer periphery thereof by means of insulators, and like this, the coupled portion among the stator, coils, and insulators is called 'stator assembly'.
So as to perform the electrical operation of the motor, accordingly, a PCB is assembled to the stator assembly. In case of a small-sized fan motor used for refrigerators, especially, the stator assembly and the PCB are fastened to each other by means of a plurality of screws, and through bolts, further, their fastening force becomes rigid.
If the conventional coupling is carried out manually, however, the reduction of the productivity unavoidably occurs, and even though it is carried out automatically, the coupled portions between the screws and the PCB are broken to increase the probability of the production of defective products.
So as to problem the above-mentioned problems, this inventor has proposed to develop an assembling apparatus of a motor for assembling the PCB onto the stator assembly by means of ultrasonic welding.
Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an assembling apparatus of a motor for assembling a stator assembly to a PCB that is capable of decreasing a defective rate occurring when the PCB is coupled to the stator assembly.
It is another object of the present invention to provide an assembling apparatus of a motor for assembling a stator assembly to a PCB that is capable of improving the productivity thereof.
It is still another object of the present invention to provide a stator of a motor that is capable of simplifying the manufacturing process thereof.
The above object and other objects of the present invention will be easily achieved by a preferred embodiment of the present invention as will be described below.
To accomplish the above objects, according to an aspect of the present invention, there is provided an assembling apparatus of a motor for assembling a stator assembly to a PCB, the assembling apparatus including: a body; a rotary jig disposed on the top portion of the body in such a manner as to be connected to a rotary shaft of the motor and adapted to mount the stator assembly on which the PCB is located thereon; an ultrasonic welder having a welding nozzle positioned at a portion of the stator assembly mounted on the rotary jig; and a stopper adapted to pressurize the top portion of the stator assembly mounted on the rotary jig.
According to the present invention, desirably, the assembling apparatus further includes an elevation plate adapted to be moved upwardly and downwardly along rails disposed on one side of the body, and the ultrasonic welder and the stopper are connected to the elevation plate in such a manner as to be moved together with the upward and downward movements of the elevation plate.
According to the present invention, desirably, the stopper is connected to a tension pole around which a spring is fitted, and the tension pole is connected to a tension pole guide connected to the elevation plate.
According to the present invention, desirably, the stopper has a nozzle positioning portion formed on one end thereof so as to place one of a plurality of welding protrusions of the stator assembly thereon.
According to the present invention, there is provided the assembling apparatus of the motor for assembling the stator assembly to the PCB that is capable of decreasing a defective rate and improving the productivity thereof.
FIG.1 is a side view showing an assembling apparatus of a motor for assembling a stator assembly to a PCB by means of ultrasonic welding according to the present invention.
FIG.2 is a plane view showing the stator assembly to be insertedly fitted to the assembling apparatus according to the present invention.
FIGS.3 and 4 are exemplary views showing examples of the stopper of the assembling apparatus according to the present invention.
FIG.5 is a plane view showing the shape of the stopper of the assembling apparatus according to the present invention.
FIG.1 is a side view showing an assembling apparatus of a motor for assembling a stator assembly to a PCB by means of ultrasonic welding according to the present invention.
As shown in FIG.1, an assembling apparatus of a motor for assembling a stator assembly to a PCB according to the present invention largely includes a body 1, a rotary jig 2, an ultrasonic welder 3, a stopper 4, an elevation plate 5 and a cylinder 6.
The body 1 has a side wall 11 disposed on one side of the top portion thereof, and a top plate 12 is disposed on the top end of the side wall 11, so that when viewed from the side, the body 1, the side wall 11 and the top plate 12 have an approximately 'ㄷ'-like shape.
The rotary jig 2 is disposed on the center portion of the top portion of the body 1, and a rail 13 is mounted on the side wall 11. A stator assembly (not shown in FIG.1) to which the PCB is coupled is mounted on the top portion of the rotary jig 2. The rail 13 of the side wall 11 serves as a guide capable of allowing the elevation plate 5 to be moved upwardly and downwardly. The cylinder 6 is mounted on the top plate 12 to provide a driving force capable of driving the elevation plate 5 upwardly and downwardly.
The rotary jig 2, on which the stator assembly is mounted, is coupled to a rotary shaft 22 of a motor 21 disposed on the underside of the body 1 and is thus rotatable on the top portion of the body 1. The motor 21 is desirably used as a servo motor capable of controlling a rotary angle at a given angle. The rotary jig 2 is rotated by means of the operation of the motor 21 to allow a portion of the stator assembly where ultrasonic welding is performed to be accurately positioned under a welding nozzle 31 of the ultrasonic welder 3.
The ultrasonic welder 3 oscillates ultrasonic waves to allow the end portion of the welding nozzle 31 to momentarily reach a high temperature, thereby melting the portion of the stator assembly to be welded. To do this, the ultrasonic welder 3 is electrically connected to an ultrasonic oscillator (not shown) mounted on the body 1. The welding nozzle 31 is momentarily heated by means of the ultrasonic welder 3. The portion of the stator assembly welded by means of the welding nozzle 31 will be explained with reference to FIG.2.
On the other hand, the ultrasonic welder 3 is moved upwardly and downwardly, and to perform the upward and downward movements of the ultrasonic welder 3, it is coupled to the elevation plate 5 in such a manner as to be moved upwardly and downwardly through the upward and downward movements of the elevation plate 5.
The stopper 4 serves to fix and press the stator assembly mounted on the rotary jig 2 and the PCB disposed on the top portion of the stator assembly. While the welding nozzle 31 of the ultrasonic welder 3 is melting the welding protrusions formed on the insulator of the stator assembly so as to fix the stator assembly to the PCB, that is, the stopper 4 fixes and presses the stator assembly and the PCB to prevent their movement. So as to perform the pressing, the stopper 4 should perform the upward and downward movements, and thus, the stopper 4 is disposed on the end portion of a tension pole 41. The tension pole 41 conducts upward and downward movements along a tension pole guide 43 performing the upward and downward movements together with the elevation plate 5. The tension pole guide 43 may be directly coupled to the elevation plate 5 to perform the upward and downward movements together with the elevation plate 5, and as shown in FIG.1, it is coupled to a tension pole support rod 52 to which the elevation plate 5 is connected.
The tension pole 41 is coupled to the interior of the tension pole guide 43 in such a manner as to be moved upwardly and downwardly, so that it performs the upward and downward movements together with the tension pole guide 43. If the tension pole guide 43 is moved downwardly, the tension pole 41 is descended, so that the stopper 4 coupled to the end of the tension pole 41 presses the PCB disposed on the stator assembly. At this time, the tension pole 41 is inserted into the tension pole guide 43, and as a spring 42 fitted around the tension pole 41 is compressed, the stopper 4 applies a pressure to the PCB, thereby fixing the PCB and the stator assembly to each other, without any movement. At this time, the welding nozzle 31 of the ultrasonic welder 3 is brought into contact with the portion of the stator assembly to be welded and melts a portion of the insulator, that is, one of the welding protrusions, thereby conducting the welding operation momentarily.
If the welding is finished, the elevation plate 5 is moved upwardly, and accordingly, the ultrasonic welder 3 and the stopper 4 are raised. In this state, the rotary jig 2 is rotated to a given angle to allow the welding protrusion to be welded this time to be located under the welding nozzle 31. Next, the elevation plate 5 is moved downwardly, and the above-mentioned welding process is conducted again. If the above processes are repeatedly conducted by the number of welding protrusions, the welding fixation of the PCB is completed.
The elevation plate 5 is connected to a shaft 61 of the cylinder 6 in such a manner as to be moved upwardly and downwardly by means of the driving of the shaft 61 of the cylinder 6. The elevation plate 5 has the ultrasonic welder 3 mounted thereon and is connected directly to the tension pole guide 43 or connected to the tension pole guide 43 via the tension pole support rod 52. Accordingly, the ultrasonic welder 5 and the tension pole guide 43 perform the upward and downward movements together with the elevation plate 5. The elevation plate 5 has a rail holder 51 mounted at one side thereof, and the rail holder 51 guides the upward and downward movements on a given track along the rail 13 mounted vertically with respect to the side wall 11 of the body 1.
The cylinder 6 is mounted on the top plate 12 of the body 1 to allow the elevation plate 5 to be moved upwardly and downwardly. The cylinder 6 serves to activate the upward and downward movements of the shaft 61, and the cylinder 6 used in the present invention includes a device for driving the upward and downward movements of the shaft 61 such as a pneumatic cylinder, hydraulic cylinder, motor, and the like. The shaft 61 is connected to the elevation plate 5, so that the upward and downward movements of the shaft 61 are transmitted to the upward and downward movements of the elevation plate 5.
FIG.2 is a plane view showing the stator assembly to be insertedly fitted to the assembling apparatus according to the present invention.
As shown in FIG.2, the stator assembly 7 adopted in the present invention largely includes a stator 71, an insulator 72 and a plurality of welding protrusions 73.
Referring to FIG.2, the stator 71 of the stator assembly 7 is surrounded with the insulator 72, and the plurality of welding protrusions 73 are spaced apart from each other on the outer periphery of the insulator 72. The welding protrusions 73 are made of an insulating plastic material in the same manner as the insulator 72, and the PCB and the stator assembly are coupled to each other by means of the ultrasonic welding. Three welding protrusions 73 are shown in FIG.2, but, of course, the number of welding protrusions is not limited thereto.
The three welding protrusions 73 are equally spaced apart from each other. They are spaced apart from each other in such a manner as to have a distance of 120 degrees from the center of the circle constituting the stator 71, and thus, as the rotary jig 2 is rotated by 120 degrees, the ultrasonic welding for them is performed.
FIGS.3 and 4 are exemplary views showing examples of the stopper of the assembling apparatus according to the present invention.
As shown in FIGS.3 and 4, the stopper 4 is connected to the end of the lower portion of the tension pole 41, and the upward and downward movements of the tension pole 41 is guided in the interior of the tension pole guide 43. The tension pole support rod 52 serves to connect the tension pole guide 43 to the elevation plate 5, and of course, the tension pole guide 43 may be connected directly to the elevation plate 5, without the installation of the tension pole support rod 52. Of course, the tension pole 41 may be provided in a form of one pair, as shown in FIG.4.
The tension pole 41 is surrounded with the spring 42. The spring 42 is disposed between the stopper 4 and the tension pole guide 43 in such a manner as to apply a pressure to the stopper, thereby pushing the stopper 4 downwardly. If an upwardly pushing pressure is applied to the stopper 4, the tension pole 41 is moved upwardly along the tension pole guide 43. At this time, the spring 42 is compressed to further push the stopper 4 downwardly, thereby permitting the PCB and the stator assembly to be maintained at a rigidly fixed state during the welding operation. If the tension pole guide 43 is raised, the compressed state of the spring 42 is released to have the shape as shown in FIGS.3 and 4. If the tension pole guide 43 is moved upwardly in the state where no force is applied to the stopper 4, the tension pole 41 is raised, and contrarily, if the tension pole guide is moved downwardly, the tension pole 41 is descended together.
FIG.5 is a plane view showing the shape of the stopper of the assembling apparatus according to the present invention.
As shown in FIG.5, the stopper 4 is connected on one side thereof to the tension pole 41 and has a nozzle positioning portion 4a formed on the other side thereof. One of the welding protrusions 73 of the stator assembly 7 is positioned at the inside of the nozzle positioning portion 4a. The welding nozzle 31 is brought into contact with the positioned welding protrusion 73, and in this state, the welding operation is performed. The plane of the stopper 4 desirably has such a size capable of surrounding most of the plane area of the PCB, and so as to perform the welding operation, in this case, the nozzle positioning portion 4a is disposed on the portion where the welding protrusion 73 is located. If the stopper 4 has a relatively small size, that is, if the welding protrusion 73 is exposed to the outside irrespective of the size of the stopper 4, there is no need for forming the nozzle positioning portion 4a on the stopper 4.
While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

Claims (4)

  1. An assembling apparatus of a motor for assembling a stator assembly to a PCB, the assembling apparatus comprising:
    a body;
    a rotary jig disposed on the top portion of the body in such a manner as to be connected to a rotary shaft of the motor and adapted to mount the stator assembly on which the PCB is located thereon;
    an ultrasonic welder having a welding nozzle positioned at a portion of the stator assembly mounted on the rotary jig; and
    a stopper adapted to pressurize the top portion of the stator assembly mounted on the rotary jig.
  2. The assembling apparatus according to claim 1, further comprising an elevation plate adapted to be moved upwardly and downwardly along rails disposed on one side of the body, the ultrasonic welder and the stopper being connected to the elevation plate in such a manner as to be moved together with the upward and downward movements of the elevation plate.
  3. The assembling apparatus according to claim 2, wherein the stopper is connected to a tension pole around which a spring is fitted, and the tension pole is connected to a tension pole guide connected to the elevation plate.
  4. The assembling apparatus according to claim 1, wherein the stopper has a nozzle positioning portion formed on one end thereof so as to place one of a plurality of welding protrusions of the stator assembly thereon.
PCT/KR2012/009145 2012-01-02 2012-11-02 Assembling apparatus of motor for assembling stator assembly to printed circuit board WO2013103191A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120000124A KR101276408B1 (en) 2012-01-02 2012-01-02 Assembling apparatus for motor with printed circuit board using ultrasonic welding
KR10-2012-0000124 2012-01-02

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CN105414735A (en) * 2015-12-30 2016-03-23 苏州润昇精密机械有限公司 Ultrasonic welding machine for welding of aluminum foil end surfaces of lithium batteries
CN109742910A (en) * 2019-01-31 2019-05-10 重庆昆旺电子有限责任公司 Motor soft board assembles equipment
US11285561B2 (en) 2018-11-28 2022-03-29 Kulicke And Soffa Industries, Inc. Ultrasonic welding systems and methods of using the same

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CN111014935A (en) * 2019-12-31 2020-04-17 珠海灵科自动化科技有限公司 Ultrasonic welding machine

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