JP2011121165A - Conveying pallet and press-fitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently and automatically execute the whole assembly work by allowing each press-fit component to be mutually press-fitted to a press-fit target component from the opposite directions without inverting the press-fit target component. <P>SOLUTION: A conveying pallet 10 includes: a pallet member 30 formed with through-holes 44; a press-fit punch plate 46 that closes the through-holes 44, is movably arranged on the pallet member 30, and holds a resolver 22; and a workpiece receiving member 54 that is arranged on the side opposite to the pallet member 30 on the press-fit punch plate 46 and holds a rotor oppositely to a yoke assembly arranged on a press-fitting station. The resolver 22 and the yoke assembly are mutually press-fitted to the rotor from the opposite directions. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a transport pallet for holding a press-fitting target part and transporting it to a press-fitting station, and a press-fitting device using the transport pallet.

  For example, a motor (electric motor) used for a hybrid vehicle, an electric vehicle, or the like is composed of various parts, and is usually manufactured automatically by an assembly line.

  For example, Patent Document 1 discloses a stator that generates a rotating magnetic field, a rotor that is coaxially disposed within a stator core of the stator, a pair of bearings that are attached to both ends of the output shaft of the rotor, and one of the above A motor interior part including at least a pressurizing spring disposed along the bearing, a bearing receiver disposed along the other bearing, and a pair of insulating sheets that insulates both surfaces of the stator; and substantially the motor Transporting a motor including a first bracket that houses interior parts therein and a second bracket that covers the first bracket as a lid, to be transported to a predetermined assembly stage by moving on a predetermined transport lane An apparatus for assembling a motor for assembling on a pallet is disclosed.

  The transport pallet is provided with a cup holder for housing the first bracket. The first bracket is attached to the cup holder, and one insulating sheet and the stator are temporarily inserted in the first bracket. A stator press-fitting stage for press-fitting the stator into the first bracket, a pressurizing spring insertion stage for placing a pressurizing spring through the stator core at the bottom of the first bracket, and one bearing in contact with the pressurizing spring A rotor insertion stage for inserting the rotor into the stator core, an insulation sheet insertion stage for inserting the other insulation sheet onto the press-fitted stator, and a bearing receiver insertion for inserting the bearing receiver toward the other bearing The stage and the second bracket are inserted with the motor interior parts. A second bracket mounting stage for mounting the bracket, and a seaming stage for integrally fixing the second bracket to the first bracket.

JP 2003-324909 A

  In the above-mentioned Patent Document 1, the parts to be press-fitted are placed on the transport pallet, sequentially transferred to each assembly station, the motor is automatically assembled, and the parts to be press-fitted on the transport pallet are applied. On the other hand, each assembling work is performed from the same direction.

  However, in the assembly work of the motor, for example, the yoke assembly may be press-fitted from one end surface side of the rotor and the resolver (angle sensor) may be press-fitted from the other end surface side of the rotor.

  For this reason, in Patent Document 1, it is necessary to temporarily remove the press-fit target part from the transfer pallet, invert the press-fit target part, and place it again on the transfer pallet. Accordingly, the reversing operation of the press-fitting target part is considerably complicated and takes time. As a result, there is a problem that it is difficult to efficiently and automatically perform the entire motor assembly operation.

  The present invention solves this type of problem, and it is possible to press-fit the press-fitting parts into the press-fitting target parts from opposite directions without reversing the press-fitting target parts. It is another object of the present invention to provide a conveyance pallet and a press-fitting device that can be automatically performed.

  The present invention relates to a transport pallet for holding a press-fitting target part and transporting it to a press-fitting station.

  The transport pallet includes a pallet member in which a through hole is formed, a press-fitting punch plate that closes the through-hole and is arranged to be movable with respect to the pallet member, and holds a first press-fitting component; The press-fitting punch plate is provided with a work receiving member that is disposed on the opposite side of the pallet member and that holds the press-fitting target component facing a second press-fitting component disposed at the press-fitting station.

  Then, the first press-fitting part is press-fitted into the press-fitting target part by inserting the pin member provided in the press-fitting station into the through hole and pressing the press-fitting punch plate toward the press-fitting target part side, while the second press-fitting is performed. A part is press-fitted into the press-fitting target part from a direction opposite to the first press-fitting part.

  Moreover, it is preferable that a pallet member has a groove part for accommodating a press-fit punch plate.

  Furthermore, it is preferable that the press-fitting punch plate has a groove for accommodating the first press-fitting component.

  Furthermore, it is preferable that a plurality of spring members are disposed on the surface of the press-fitting punch plate that faces the workpiece receiving member.

  Moreover, it is preferable that the press-fitting target part is a rotor constituting the motor, the first press-fitting part is a resolver, and the second press-fitting part is a yoke assembly.

  Furthermore, the present invention relates to a press-fitting device using a transport pallet. The press-fitting device is arranged to face the first press-fitting mechanism with a first press-fitting mechanism for press-fitting the first press-fitting part into the press-fitting target part, and a conveyance pallet. And a second press-fitting mechanism for press-fitting into the.

  The first press-fitting mechanism is inserted into the through-hole from the side opposite to the press-fit target part, and presses the press-fit punch plate on which the first press-fit part is placed toward the press-fit target part side, thereby A pin member that press-fits the press-fit component into the press-fit component and a movable portion that moves the pin member back and forth are provided.

  In the present invention, when the transfer pallet is arranged at the press-fitting station, the second press-fitting part is press-fitted from one direction into the press-fitting target part held by the work receiving member. Further, when the press-fitting punch plate moves toward the workpiece receiving member with respect to the pallet member, the first press-fitting component held by the press-fitting punch plate is press-fitted into the press-fitting target component from the other direction opposite to the one direction. Is done.

  For this reason, it is possible to press-fit the first press-fitting component and the second press-fitting component from opposite directions to the press-fitting target component held on the transport pallet. Thereby, it is not necessary to reverse the press-fitting target part, and the entire assembling work can be efficiently and automatically performed.

  Further, in the present invention, the press-fitting punch plate is pressed toward the press-fitting target component side by inserting the pin member into the through hole. Therefore, the first press-fitting component is press-fitted accurately and smoothly into the press-fitting target component under the guiding action of the pin member and the through hole.

It is a schematic block diagram of the press-fit apparatus in which the conveyance pallet which concerns on the 1st Embodiment of this invention is used. It is a principal part disassembled perspective explanatory drawing of the motor assembled by the said press-fitting apparatus. It is a disassembled perspective explanatory drawing of the said conveyance pallet. It is operation | movement explanatory drawing at the time of press-fitting a yoke assembly with the said press-fitting apparatus. It is operation | movement explanatory drawing at the time of press-fitting a resolver with the said press-fitting apparatus. It is a schematic block diagram of the press injection apparatus in which the conveyance pallet which concerns on the 2nd Embodiment of this invention is used. It is a disassembled perspective explanatory drawing of the said conveyance pallet. It is operation | movement explanatory drawing at the time of press-fitting a resolver with the said press-fitting apparatus.

  As shown in FIG. 1, a transport pallet 10 according to the first embodiment of the present invention is used for a press-fitting device 12. The press-fitting target component that is transported to the press-fitting station by the transport pallet 10 is the rotor 14 among the components of the motor.

  As shown in FIG. 2, the rotor 14 has an end face plate 16 on the one end 14a side, and is provided with a small-diameter ring portion 18 that protrudes outward in the axial direction from the one end 14a. A circumferential surface portion 20 is provided in the axial direction from the other end 14 b side of the rotor 14.

  A resolver (angle sensor) (first press-fitting component) 22 is press-fitted into the ring portion 18. A yoke assembly (second press-fit product) 24 is press-fitted into the peripheral surface portion 20 from the other end 14b side. The yoke assembly 24 is provided with a plurality of magnets 26.

  As shown in FIG. 3, the transport pallet 10 includes a pallet member 30 that is transferred to a press-fitting station via transport means (not shown). The pallet member 30 includes a plate body 32 and a base plate 34 fitted and arranged on the center side of the plate body 32. The plate body 32 is provided with a plurality of positioning seats 36 and a stopper (solenoid or the like) 38 for fixing the base plate 34.

  The base plate 34 is provided with a circular opening 40 at the center, and a groove 42 is formed on the outer periphery of the opening 40. A plurality of, for example, four through holes 44 are formed through the bottom surface forming the groove 42 in the axial direction (arrow A direction).

  A press-fit punch plate 46 is accommodated in the groove 42. The press-fit punch plate 46 is disposed in the groove portion 42 so as to be movable in the direction of arrow A, and closes the plurality of through holes 44. A relatively large opening 48 is formed at the center of the press-fit punch plate 46, and a groove 50 for accommodating the resolver 22 is formed on the outer periphery of the opening 48.

  A plurality of spring members 52 are disposed on the surface 46 a where the groove 50 of the press-fitting punch plate 46 is provided. A work receiving member 54 is disposed on the press-fitting punch plate 46 on the side opposite to the pallet member 30. The workpiece receiving member 54 has a substantially ring shape, and has an opening 56 having a relatively large diameter at the center. The workpiece receiving member 54 is provided with a groove 58 for accommodating and holding the rotor 14 facing the yoke assembly 24 disposed at the press-fitting station.

  As shown in FIG. 1, the press-fitting device 12 is disposed opposite to the first press-fitting mechanism 60 for press-fitting the resolver 22 into the rotor 14 and the first press-fitting mechanism 60 with the conveying pallet 10 interposed therebetween. And a second press-fitting mechanism 62 for press-fitting 24 into the rotor 14.

  On the first press-fitting mechanism 60 side, a pallet placing portion 64 for placing the transport pallet 10 is provided in a divided (or integrally) manner. A plurality of through holes 66 are formed in the pallet placing portion 64 coaxially with the plurality of through holes 44 of the pallet member 30. The through-hole 66 can constitute a stepped hole that substantially expands downward.

  The first press-fitting mechanism 60 includes a piston part 70 slidable in the direction of arrow A along the inner peripheral surface of the guide cylinder part 68. The piston part 70 constitutes a movable part connected to an actuator such as a hydraulic cylinder (not shown). The piston portion 70 is provided with a plurality of pin members 72 that can be integrally inserted into the through holes 44 and 66 arranged coaxially. Each pin member 72 is formed with a locking portion 74 for restricting the movement position toward the rotor 14, and the tip portion is regulated by arranging the locking portion 74 in the through hole 66. .

  The second press-fitting mechanism 62 includes an elevating die 80 that is movable in the direction of arrow A, and a pressing member 84 is supported at the tip of the elevating die 80 via a spring member 82. A press-fit mold 86 is disposed on the outer side of the lift mold 80 so as to be movable up and down, and a groove 88 for holding the yoke assembly 24 is formed on the inner peripheral side of the press-fit mold 86.

  Operations of the transport pallet 10 and the press-fitting device 12 configured as described above will be described below.

  First, as shown in FIG. 3, in the transport pallet 10, the press-fit punch plate 46 is accommodated in the groove portion 42 of the base plate 34 constituting the pallet member 30. The press-fit punch plate 46 closes the plurality of through holes 44 formed in the base plate 34 by the ring-shaped bottom surface.

  On the other hand, the resolver 22 is accommodated in the groove portion 50 of the press-fit punch plate 46, and a plurality of spring members 52 are disposed on the surface 46a. A work receiving member 54 is placed on the press-fit punch plate 46, and a plurality of spring members 52 abut on the bottom surface side of the work receiving member 54. The rotor 14 is placed in the groove 58 of the work receiving member 54 with the end face plate 16 facing downward.

  As described above, the transport pallet 10 on which the resolver 22 and the rotor 14 are arranged is transferred to the press-fitting station and positioned and held on the pallet placing part 64 as shown in FIG. In the press-fitting station, the transport pallet 10 is held by the pallet placing part 64, while the yoke assembly 24 is disposed in the groove part 88 of the press-fitting die 86 constituting the second press-fitting mechanism 62.

  Next, the raising / lowering die 80 constituting the second press-fitting mechanism 62 is lowered, and the pressing member 84 presses and holds the rotor 14 on the work receiving member 54 through the elastic force of the spring member 82. On the other hand, the yoke assembly 24 is lowered under the lowering action of the press-fit die 86.

  Therefore, as shown in FIG. 4, the yoke assembly 24 is press-fitted into the peripheral surface portion 20 at a predetermined speed with respect to the rotor 14 from above the conveyance pallet 10 and is pressed until a predetermined abutting load is exceeded. Therefore, the yoke assembly 24 is press-fitted into the peripheral surface portion 20 of the rotor 14, and the first press-fitting mechanism 60 is driven in this state. At that time, the yoke assembly 24 and the rotor 14 are accurately press-fitted under the action of the groove 88.

  In the first press-fitting mechanism 60, the piston portion 70 slides upward along the inner peripheral surface of the guide tube portion 68 under the action of a hydraulic cylinder (not shown) or the like. The plurality of pin members 72 provided in the piston portion 70 rises along the through hole 66 and is inserted into the through hole 44 provided in the base plate 34.

  Under the ascending action of the piston part 70, each pin member 72 comes into contact with the bottom surface of the press-fit punch plate 46 from each through hole 44 and presses the press-fit punch plate 46 toward the rotor 14 side. Thereby, the resolver 22 accommodated in the groove portion 50 of the press-fitting punch plate 46 is press-fitted into the ring portion 18 of the rotor 14 at a predetermined speed and a predetermined load (see FIG. 5). The press-fitting speed and load of the resolver 22 are set to values smaller than the press-fitting speed and the butting load of the yoke assembly 24.

  In this case, in the first embodiment, when the transport pallet 10 is arranged at the press-fitting station, first, the yoke assembly 24 is acted on the rotor 14 held by the work receiving member 54 under the action of the second press-fitting mechanism 62. Is press-fitted. Next, under the action of the first press-fit mechanism 60, the press-fit punch plate 46 moves to the workpiece receiving member 54 side, and the resolver 22 held by the press-fit punch plate 46 is press-fit into the ring portion 18 of the rotor 14. The

  For this reason, the yoke assembly 24 and the resolver 22 can be press-fitted into the rotor 14 held on the transport pallet 10 from opposite directions. Thus, there is no need to reverse the rotor 14 held on the transport pallet 10, and the entire motor assembly operation can be efficiently and automatically performed.

  Further, the first press-fitting mechanism 60 is provided with a plurality of pin members 72 in the piston part 70 which is a movable part. The pin member 72 is inserted into the plurality of through holes 44 of the base plate 34, so that the press-fitting punch plate 46 is pressed toward the rotor 14. Therefore, the resolver 22 is advantageously pressed into the rotor 14 accurately and smoothly under the guiding action of the plurality of pin members 72 and the plurality of through holes 44.

  In the first embodiment, after the yoke assembly 24 having a large press-fit load is press-fitted into the rotor 14, the resolver 22 having a small press-fit load is press-fitted into the rotor 14. For this reason, the burden concerning the resolver 22 can be reduced, and the resolver 22 can be effectively protected.

  Furthermore, in the first embodiment, the base plate 34 is provided with a groove portion 42 in which the entire press-fit punch plate 46 is accommodated. Therefore, when the yoke assembly 24 is press-fitted into the rotor 14 via the second press-fitting mechanism 62, a relatively large press-fitting load can be received by the work receiving member 54 and the base plate 34. For this reason, the above-mentioned load does not act on the press-fitting punch plate 46 holding the resolver 22. Thereby, it is possible to satisfactorily suppress the resolver 22 from causing damage or the like due to the press-fitting load.

  Further, the press-fitting punch plate 46 is provided with a groove 50 for positioning the resolver 22. Therefore, the load applied to the resolver 22 can be easily reduced by setting the depth of the groove 50 to the depth at which the resolver 22 is accommodated.

  Further, the resolver 22 is press-fitted into the ring portion 18 that protrudes further downward from one end 14 a that is the bottom surface of the rotor 14. For this reason, the resolver 22 can protrude outward from the outer peripheral part of the rotor 14, and there exists an advantage that rotation detection is performed more reliably.

  Furthermore, the workpiece receiving member 54 can firmly hold the rotor 14 except for a portion where the resolver 22 is press-fitted, that is, provided with an opening 56. Thus, the rotor 14 is not displaced unnecessarily when the resolver 22 is press-fitted, and the press-fitting process of the resolver 22 is performed with high accuracy.

  In the pallet member 30, the plate body 32 and the base plate 34 are individually configured. However, the plate body 32 and the base plate 34 may be integrally formed.

  FIG. 6 is a schematic configuration diagram of a press-fitting device 92 in which the transport pallet 90 according to the first embodiment of the present invention is used.

  In addition, the same referential mark is attached | subjected to the component same as the conveyance pallet 10 and the press injection apparatus 12 which concern on 1st Embodiment, and the detailed description is abbreviate | omitted.

  As shown in FIGS. 6 and 7, the transport pallet 90 includes a pallet member 94. The base plate 96 constituting the pallet member 94 is provided with a recess 98, and a single through hole 100 communicates with the central portion of the recess 98. The press-in punch plate 102 is accommodated in the recess 98. The press-fitting punch plate 102 has a disk shape, is disposed in the recess 98 so as to be movable in the direction of arrow A, and closes the through hole 100. In the central portion of the press-fit punch plate 102, a relatively large-diameter concave portion 103 for accommodating the resolver 22 is formed.

  As shown in FIG. 6, the press-fitting device 92 is disposed to face the first press-fitting mechanism 104 with the first press-fitting mechanism 104 for press-fitting the resolver 22 into the rotor 14 and the conveyance pallet 90, and is arranged as a yoke assembly. And a second press-fitting mechanism 62 for press-fitting 24 into the rotor 14.

  On the first press-fitting mechanism 104 side, a pallet placement unit 106 for placing the transport pallet 90 is provided in a divided (or integrally) manner. A through hole 108 is formed in the pallet placing portion 106 coaxially with the through hole 100 of the pallet member 94. The through-hole 108 can constitute a stepped hole that substantially expands downward.

  The piston portion 70 constituting the first press-fitting mechanism 104 is provided with a single pin member 110 that can be inserted integrally into the through holes 100 and 108 that are coaxially arranged. The pin member 110 is formed with a locking portion 112 for restricting the movement position toward the rotor 14, and the tip portion is regulated by arranging the locking portion 112 in the through hole 108.

  In the second embodiment configured as described above, the operation is the same as the transport pallet 10 and the press-fitting device 12 according to the first embodiment. In particular, in the second embodiment, as shown in FIG. 8, when the first press-fitting mechanism 104 is driven and the piston part 70 is raised, the single pin member 110 is inserted from the through hole 100 into the press-fitting punch plate 102. The press-fitting punch plate 102 is pressed against the rotor 14 side.

  Thereby, the resolver 22 accommodated in the recess 103 of the press-fitting punch plate 102 is press-fitted into the ring portion 18 of the rotor 14 at a predetermined speed and a predetermined load. Therefore, the second embodiment can obtain the same effects as those of the first embodiment.

DESCRIPTION OF SYMBOLS 10, 90 ... Transport pallet 12, 92 ... Press-fit apparatus 14 ... Rotor 18 ... Ring part 22 ... Resolver 24 ... Yoke assembly 30, 94 ... Pallet member 32 ... Plate body 34, 96 ... Base plate 42, 50, 58, 88 ... Groove part 44, 66, 100, 108 ... through hole 46, 102 ... press-fitting punch plate 52 ... spring member 54 ... work receiving member 60, 62, 104 ... press-fitting mechanism 64, 106 ... pallet mounting part 70 ... piston part 72, 110 ... Pin members 74, 112 ... locking portion 80 ... elevating die 86 ... press-fitting die 98, 103 ... concave portion

Claims (6)

It is a transport pallet for holding the parts to be press-fitted and transporting them to the press-fitting station,
A pallet member in which a through hole is formed;
A press-fitting punch plate that closes the through-hole and is arranged so as to be movable with respect to the pallet member, and that holds the first press-fitting component;
A workpiece receiving member which is disposed on the press-fitting punch plate on the side opposite to the pallet member and holds the press-fitting target component opposite to a second press-fitting component disposed at the press-fitting station;
With
While inserting the pin member provided in the press-fitting station into the through-hole and pressing the press-fitting punch plate toward the press-fitting target component, the first press-fitting component is press-fitted into the press-fitting target component,
A conveyance pallet, wherein the second press-fitting part is press-fitted into the press-fitting target part from a direction opposite to the first press-fitting part.   2. The conveyance pallet according to claim 1, wherein the pallet member has a groove for accommodating the press-fitting punch plate.   The conveyance pallet according to claim 1 or 2, wherein the press-fitting punch plate has a groove for accommodating the first press-fitting component.   The conveyance pallet according to any one of claims 1 to 3, wherein a plurality of spring members are disposed on a surface of the press-fitting punch plate that faces the workpiece receiving member. In the conveyance pallet of any one of Claims 1-4, the said press-fit object component is a rotor which comprises a motor,
The first press-fitting part is a resolver, and the second press-fitting part is a yoke assembly. A press-fitting device using the transport pallet according to any one of claims 1 to 5,
A first press-fit mechanism for press-fitting the first press-fit part into the press-fit target part;
A second press-fitting mechanism that is disposed to face the first press-fitting mechanism with the transport pallet interposed therebetween, and press-fitting the second press-fitting part into the press-fitting target part;
With
The first press-fitting mechanism is inserted into the through-hole from the side opposite to the press-fitting target part, and presses the press-fitting punch plate on which the first press-fitting part is placed to the press-fitting target part side, The pin member that press-fits the first press-fit component into the press-fit target component;
A movable part that advances and retracts the pin member;
A press-fitting device comprising:

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