JPH0426182Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (1) Industrial application field The present invention is designed to fit an assembled part having a rotating member having an inner surface with a cross-sectional shape different from a circular one onto the inner surface of the rotating member. The present invention relates to a phasing and assembling device for assembling an assembly having a drive shaft to be connected.

(2) Conventional technology Conventionally, for example, when assembling an oil pump to an engine assembly while fitting a crankshaft to its inner rotor, a pallet jig having a notch synchronized with the phase of the crankshaft was used. A worker sets the oil pump, and a robot grasps the oil pump on the pallet jig and assembles it into the engine assembly.

(3) Problems to be solved by the invention However, with the conventional method described above, if the worker is delayed in setting the oil pump on the pallet jig, the robot cannot grasp the oil pump and the assembly is delayed. There is a problem in that the attaching efficiency depends on the work of the worker, resulting in poor work efficiency.

The present invention has been made in view of the above circumstances, and is a phase alignment system that improves work efficiency by automatically assembling parts to be assembled into an assembly while aligning the phases of their rotating members. The purpose is to provide assembly equipment.

B. Structure of the invention (1) Means for solving the problem The device of the invention includes a holding jig capable of holding the assembled parts; Posture change between a horizontal position for placing and holding attached parts and an upright position for facing the assembled part held in the holding jig, and movement towards and away from the assembled part. A jig support plate supported by a fixed base on the side of the assembled body positioned at a fixed position; a phasing mechanism disposed within the holding jig to drive; a drive mechanism disposed on the base for enabling power connection and disconnection with the phasing mechanism; A position above the holding jig of a jig support plate in a horizontal position and a position retracted laterally from the above position, which has a fitting part that can be fitted to the rotating member of the assembled part when its phase is correct. a phase confirmation mechanism movable between;

(2) Effect According to the above configuration, with the assembled component mounted and held on the holding jig, the phase adjustment mechanism connected to the drive mechanism angularly displaces the rotating member, and the phase confirmation mechanism adjusts the phase. It is possible to confirm that the is in the correct state, and in that state, the part to be assembled can be assembled to the assembly by changing and moving the jig support plate, and the phasing and assembly operations can be automatically performed. By doing so, the efficiency of assembly work can be improved.

(3) Embodiment An embodiment of the present invention will be explained below with reference to the drawings. First, in FIG. oil pump
Place it on the pallet 4 with the assembly part 1 where the OP is to be assembled and the assembly part 2 where the water pump WP is to be assembled on one side, and the assembly part 3 where the seal cover SC is to be assembled on the other side. It is positioned and placed on. This pallet 4 is transferred to a conveyor 5.
is transported to a predetermined assembly position. Moreover, the pallet 4, that is, the engine assembly E, is positioned and fixed at its assembly position, and on one side of the engine assembly E, which is positioned and fixed, there are
A first assembly device 6 is provided for assembling the oil pump OP and water pump WP in the assembling parts 1 and 2, respectively, and a first assembling device 6 is provided on the other side for assembling the seal cover SC in the assembling part 3. second assembly device 7
will be placed. Further, a nut runner device 8 for fastening the oil pump OP and the water pump WP to the engine assembly E is disposed on the opposite side of the first assembly device 6 from the engine assembly E, and A nut runner device 9 for fastening the seal cover SC to the engine assembly E is disposed on the opposite side from the engine assembly E.

In FIGS. 2 and 3, the first assembly device 6
A base 11 is fixedly arranged on one side of the conveyor 5, and a slide plate 12 is movable toward and away from the engine assembly E on the base 11.
, a jig support plate 13 rotatably supported by the slide plate 12, an oil pump holding jig 14 disposed on the jig support plate 13 to hold the oil pump OP, and a water pump WP. A water pump holding jig 15 disposed on the jig support plate 13 to hold the water pump, and a drive cylinder disposed on the base 11 for rotating the jig support plate 13 and sliding the slide plate 12. 16.

A pair of guide rails 17 and 18 that are orthogonal to the conveyor 5 are fixed in parallel on the base 11, and a pair of guide rails 17 and 18 that fit into the guide rails 17 and 18 are provided on the lower surface of the slide plate 12. A pair of fitting protrusions 19, 19 are provided in a protruding manner. These fitting protrusions 19, 19 and guide rails 17, 18 enable the slide plate 12, that is, the jig support plate 13, to move toward and away from the engine assembly E. Further, a forward end stopper pin 20 is disposed on the upper surface of the end of the base 11 near the engine assembly E, and a contact protrusion 21 that can come into contact with the stopper pin 20 is protruded from the lower surface of the slide plate 12. Contact protrusion 21
The forward end of the slide plate 12, that is, the position closest to the engine assembly E is regulated by the stopper pin 20. Further, a reverse end stopper pin 22 is disposed on the upper surface of the end of the base 11 that is remote from the engine assembly E, and a contact protrusion 23 that can come into contact with the stopper pin 22 is protruded from the lower surface of the slide plate 12. This contact protrusion 23 and stopper pin 22
This restricts the backward movement end of the slide plate 12, that is, the position furthest away from the engine assembly E. Moreover, there is a spring 2 between the slide plate 12 and the base 11.
4 is contracted, and this spring 24 moves the slide plate 12 in the direction away from the engine assembly E.
That is, the abutting protrusion 23 is connected to the reverse end stopper pin 22.
The spring is biased in the direction of abutting.

A pair of support plates 26, 26 are fixed to the slide plate 12 with a space between them, extending forward from the front end thereof, that is, the end near the engine assembly E. support plate 26,
26 has a cylindrical rotation shaft 2 having a horizontal axis perpendicular to the sliding direction of the slide plate 12.
Both ends of 7 are rotatably supported. Further, the jig support plate 13 is arranged above the slide plate 12, and one end of this jig support plate 13 is fixed to the rotation shaft 27 via the connection plate 28, and the jig support plate 13 and the connection plate 28 A reinforcing plate 29 is fixed at right angles to the lower surface of the .

The jig support plate 13 is provided with a stopper pin 30 that projects downward, and the upper surface of the slide plate 12 is provided with a protruding receiving portion 31 that can come into contact with the stopper pin 30. Further, a lever 32 extending toward the jig support plate 13 is attached to the rotation shaft 27 that is integral with the jig support plate 13.
The proximal end of the lever 32 is fixed, and a first stopper 33 is provided at the tip of the lever 32. Moreover, lever 32
A second stopper 34 that can come into contact with the first stopper 33 is provided on one of the support plates 26 adjacent to the engine assembly E, facing the side opposite to the engine assembly E. Therefore, the jig support plate 13 has a standby position (the position shown in FIG. 3) where the stopper pin 30 is in contact with the receiving part 31 and is in a horizontal position parallel to the slide part 12, and a first position.
The stopper pin 33 is brought into contact with the second stopper pin 34 and can be rotated between an upright position (the position shown by the chain line in FIG. 1) facing the engine assembly E in an upright position.

A bracket 35 is erected at one end of the base 11 along the axis of the rotation shaft 27, and the drive cylinder 16 is made swingable via a trunnion shaft 36 parallel to the rotation shaft 27. and is supported by a bracket 35. The drive cylinder 16 is arranged with its piston rod 16a facing the rotating shaft 27, and one end of a link 38 is connected to the tip of the piston rod 16a via a connecting pin 37, and the other end of the link 38 is The end is fixed to a small-diameter shaft 39 coaxially protruding from one end of the rotation shaft 27 .
Furthermore, this link 38 allows the drive cylinder 16 to
The piston rod 16a and the shaft 39 are connected in order to rotate the rotation shaft 27 in the direction in which the jig support plate 13 rotates from the standby position to the standing position during the extension operation.

The jig support plate 13 has an oil pump holding jig 1 at a position corresponding to the assembly part 1 of the engine assembly E when the jig support plate 13 is in the upright position.
4 are arranged.

Next, to explain the structure of the oil pump holding jig 14, a through hole 41 is bored in the jig support plate 13, and an outer cylinder 42 passes through this through hole 41.
is fixed to the jig support plate 13 with a plurality of bolts 43. Moreover, the outer cylinder 42 is fixed with the elastic body 40 interposed between it and the jig support plate 13, and can swing somewhat relative to the jig support plate 13 while bending the elastic body 40. . Also, the outer cylinder 42
is the slide plate 1 when the jig support plate 13 swings.
Slide plate 12 to avoid interference with 2.
When the jig support plate 13 is in a horizontal position, the outer cylinder 42 passes through the through hole 50 and projects downward. This outer cylinder 42
A pedestal 44 is fixed to the upper surface in parallel with the jig support plate 13, and a column 45 is erected on the upper surface of the end of the pedestal 44 near the engine assembly E. A gripper 46 is disposed to resiliently abut on the side surface of the oil pump OP mounted on the oil pump OP. The gripping tool 4
6 has a gripping claw 48 on a support piece 47 that is integrated with the pedestal 44.
is rotatably supported, and its gripping claw 4
A gripping spring 49 is interposed between the lower end of 8 and the pedestal 44, and the gripping spring 49 rotates the gripping claw 48 in the closing direction, that is, in the direction in which the gripping claw 48 is rotated so as to come into contact with the side surface of the oil pump OP. exerts spring force.

Furthermore, a pair of support columns 51, 51 are erected on the upper surface of the end of the pedestal 44 on the side remote from the engine assembly E, and a pair of support columns 51, 51 are provided at the upper part of the support columns 51, 51, unlike the above-mentioned support column 45. Oil pump OP on the other side
A positioning notch 52 that can be brought into contact with the side surface of each is provided. Each of the pillars 45, 51, 5
The oil pump OP will be positioned and mounted on 1.

An inner cylinder 54 is inserted into the outer cylinder 42 via a sleeve 53.
are slidably inserted into the inner cylinder 54 and the outer cylinder 42.
A spring 55 is interposed between them to bias the inner cylinder 54 upward. Further, a spindle 57 is inserted into the inner cylinder 54 via a sleeve 56 so as to be slidable up and down, and a driven body 58 is fixed to the lower end of the spindle 57. Further, a spring 59 is compressed between the lower end of the inner cylinder 54 and the driven body 58, and the spring 59 resiliently biases the spindle 57 downward. Moreover, a disc-shaped engagement member 60 is engaged with the middle part of the inner surface of the inner cylinder 54, and a engagement step 61 provided at the upper end of the spindle 57 is engaged with the engagement member 60.
0, the lower limit position of the spindle 57 relative to the inner cylinder 54 is regulated.

A phasing mechanism 62 having three phasing claws 63 is disposed within the oil pump holding jig 14 . That is, at the upper end of the spindle 57, the lower portions of three phasing claws 63 arranged radially at equal intervals in the circumferential direction are pivotally supported, and the tips of these phasing claws 63 (i.e., the upper end )for,
Claw portions 64 that can engage with the inner circumferential surface of an inner rotor R (see FIG. 4) as a rotating member in the oil pump OP are each integrally formed. Furthermore, a jaw piece 6 is provided at the base end (i.e., lower end) of each phasing claw 63.
5 are integrally formed, and a spring 66 is interposed between the upper ends of the jaw piece 65 and the spindle 57, respectively. These springs 66 exert a spring force in a direction that causes the jaw piece 65 to move away from the side surface of the spindle 57, that is, in a direction that causes the respective phasing claws 63 to rotate so that the claw portions 64 at their upper ends approach each other.

A holder 68 is fixedly supported at the upper end of the inner cylinder 54 by a cap 67 fixed to the upper end.
A cylindrical tube portion 6 that can fit into the seal member S (see Fig. 4) on the inner circumferential surface of the inner rotor R in the OP.
9 is provided to protrude upward. Moreover, this cylindrical part 6
The inner diameter of 9 is set to such an extent that each phasing claw 63 in the closed state can be inserted therethrough. Further, a rubber stopper 70 is fitted on the lower surface of the holder 68 for abutting the jaws 65 of the phasing pawl 63 when the spindle 57 is raised. When the jaws 65 abut against the rubber stopper 70, the phasing pawl 63 is opened by rotating the upper claw portions 64 outward so as to separate them from each other.

The slide plate 12 has a positioning pin 71 that can be inserted into a dowel hole etc. in the oil pump OP.
is protruding from the oil pump holding jig 14.
When the oil pump OP is placed on the holder, the positioning pin 71 also positions the oil pump OP.

A support frame 73 is fixed to the lower surface of the base 11, and a drive mechanism 72 is disposed on this support frame 73. The drive mechanism 72 includes an elevating cylinder 7 having an axis extending vertically and fixed to the lower part of a support frame 73.
4, and a horizontal bracket 75 is connected to the piston rod 74a of the lifting cylinder 74 so as to be able to move up and down relative to the piston rod 74a within a limited range. Moreover, the bracket 75 is biased upward by a spring 76 interposed between the bracket 75 and the piston rod 74. Further, a spindle 77 coaxial with the spindle 57 is rotatably supported on the bracket 75 at a position corresponding to the lower side of the spindle 57, and a drive body 78 is fixed to the upper end of the spindle 77.
Further, disc gears 79 and 80 that can mesh with each other are carved on opposing surfaces of the driven body 58 and the driving body 78.

Piston rod 74a with respect to spindle 77
A motor 81 is suspended from the bracket 75 on the opposite side, and a driving gear 82 fixed to the output shaft of the motor 81 and a driven gear 83 fixed to the lower end of the spindle 77 mesh with each other. do. Therefore, depending on the operation of the motor 81, the spindle 77
is rotationally driven, and the lifting cylinder 74
By operating the disc gears 79 and 80 in extension,
The spindle 57 can be raised by engaging them with each other.

By the way, the oil pump OP is brought to the oil pump holding jig 14 by a gripping jig (not shown), and the oil pump OP is attached to each support column by fitting the cylindrical part 69 of the holder 68 into the sealing member S of the oil pump OP. It is positioned and placed on 45, 51, and 51.
In this state, the inner rotor R of the oil pump OP is phased, but in order to check whether the phasing has been performed accurately, the jig support plate 13 is placed in a horizontal position as shown in FIG. The phase confirmation mechanism 85 is movable above the oil pump holding jig 14 in this state.

This phase confirmation mechanism 85 is guided in vertical movement by a lower plate 87 fixed to a movable arm 86 connected to a moving means (not shown), and a guide shaft 88 erected on the lower plate 87. An upper plate 89 disposed above the plate 87, a cylinder 90 that connects a piston rod 90a to the lower plate 87 and is supported and fixed to the upper plate 89, and an upper plate 89 that allows vertical relative movement within a limited range. Confirmation shaft 91 supported by
and a spring 92 interposed between the lower plate 87 and the confirmation shaft 91 to urge the confirmation shaft 91 downward.

A bottomed cylindrical guide tube 93 is provided on the upper surface of the upper plate 89.
is fixed to the guide tube 93, and an upper plate 89 is attached to the guide tube 93.
The upper large diameter portion 91a of the confirmation shaft 91, which passes through the shaft so as to be vertically movable, is movably fitted therein. Moreover, the 4th A
As shown in the figure, a groove 94 along one diameter line is provided on the upper surface of the upper large-diameter portion 91a, and a regulating member 95 fixed to the upper end of the guide tube 93 fits into the groove 94, whereby the confirmation shaft 91 rotation about the axis is prevented.

The confirmation shaft 91 is a through hole 87a bored in the lower plate 87.
As shown in FIG. 4B, a fitting part 96 that can be fitted to the inner rotor R is provided at the lower end of the confirmation shaft 91. In other words, the inner surface of the inner rotor R is formed by connecting a pair of mutually opposing flat parts Ra and Rb with circular arc parts Rc and Rd so as to correspond to the outer end surface of the crankshaft C as the drive shaft of the engine assembly E. The outer surface shape of the fitting portion 96 is formed corresponding to the inner surface shape of the inner rotor R. In addition, the inner rotor R is angularly displaced by the phasing claws 63 of the holding jig 14 in contact with its inner surface, and the cylinder 90 is contracted to insert the confirmation shaft 91 into the oil pump OP. When the inner rotor R is angularly displaced to a position where the fitting part 96 can be fitted to its inner surface, the fitting part 96 is fitted to the inner rotor R by the spring force of the spring 92, and phase alignment is performed. Moreover, a dog 97 is provided in the middle part of the confirmation shaft 91, and when the confirmation shaft 91 is fitted into the inner rotor R and moved downward, the dog 97
A switch 98 for detecting 7 is fixed to the lower plate 87. Therefore, when the phase alignment of the inner rotor R is completed, the switch 98 outputs a completion signal.

Referring again to FIGS. 2 and 3, the structure of the water pump holding jig 15 for holding the water pump WP will be explained.
Reference numeral 5 denotes a jig main body 1 having a shaft portion 101a at its lower end that passes through a through hole 100 formed in a jig support plate 13.
1. Moreover, the jig main body 101 is formed into a cylindrical shape with a bottom that is open upward, and the inner diameter of the jig main body 101 is set to such an extent that the water pump WP can be fitted therein. Further, on the lower surface of the jig support plate 13, there is provided a guide tube 1 for movably guiding the shaft portion 101a.
02 is connected and fixed to the through hole 100, and the jig main body 101 is urged upward by a spring 103 interposed between the guide cylinder 102 and the jig main body 101. Moreover, a regulating plate 104 that can come into contact with the lower end of the guide tube 102 is fixed to the lower end of the shaft portion 101a, and the upper limit position of the jig main body 101 is regulated by this regulating plate 104. Further, a guide hole 105 is formed in the jig support plate 13, and a pin 106 fixed to the jig body 101 is inserted into the guide hole 105.

A slit 107 communicating with the inner surface of the jig main body 101 is formed in the side portion thereof, and a gripping tool 108 is disposed in this slit 107. The gripping tool 108 is configured to be able to come into contact with the side surface of the water pump WP fitted into the jig main body 101 so that the slit 10
7 and whose lower part is rotatably supported by the jig main body 101;
09 and a gripping spring 110 interposed between the jig body 101, and the gripping spring 110 is connected to the gripping claw 1.
09, that is, exerts a spring force in the direction of rotating the gripping claw 109 so as to contact the side surface of the water pump WP.

5 and 6, the second assembly device 7
The structure of is basically the same as a part of the first assembly device 6, and the members corresponding to the reference numbers with 100 added to the reference numbers of the constituent members of the first assembly device 6 are attached. By illustrating it, a detailed description of the structure of the second assembly device 7 will be omitted.

That is, the second assembly device 7 includes a base 111, a slide plate 112, a jig support plate 113, a drive cylinder 116 as a drive source, a rotation shaft 127, a first stopper 143, a second stopper 144, etc. The configuration is basically the same as a part of the first assembly device 6.

In addition, the jig support plate 113 has a seal cover SC.
Seal cover holding jig 115 for holding the
When the jig support plate 113 is raised, the engine assembly E
It is arranged at a position opposite to the assembly section 3 of. This holding jig 115 has basically the same structure as the water pump holding jig 15 of the first assembly device 6, and a jig main body 201 having a shaft portion 201a at the lower end serves as a jig support. Through hole 20 bored in plate 113
0 and is guided to be movable up and down by a guide tube 202 fixed to the lower surface of the jig support plate 113, and elastically biased upward by a spring 203.

A seal cover SC is placed on this jig main body 201, and in this state, the seal cover SC is positioned and supported by the pillars 145, 151, and 151, and is gripped by the gripper 146.

Next, to explain the operation of this embodiment, when the engine assembly E is positioned at a predetermined fixed position, the jig support plate 13 of the first assembly device 6
The jig support plate 113 of the second assembly device 7 is in a horizontal position, and the oil pump OP and water pump
The WP and the seal cover SC are each held by a holding device (not shown), and each holding jig 14,1
5,115.

In this state, the elevating cylinder 74 of the first assembly device 6 is extended and the motor 81 is rotated, so that the phasing pawl 63 expands outward and rotates, so that it is attached to the inner surface of the inner rotor R in the oil pump OP. This contact causes the inner rotor R to undergo an angular displacement. Moreover, at this time, the oil pump holding jig 14
The phase confirmation mechanism 85 has moved upward, and the confirmation shaft 91 has been inserted into the oil pump OP, so the fitting part 96 at the tip of the confirmation shaft 91 fits into the inner rotor R. The phase alignment is completed, and the phase confirmation mechanism 85 is retracted laterally from the position above the oil pump holding jig 14.

In this state, first the drive cylinders 16, 116
When the jig support plates 13,1
Reference numeral 13 rotates until the first stoppers 33, 133 and the second stoppers 34, 134 come into contact with each other and assumes the upright position, and the oil pump OP, water pump WP, and seal cover held by the respective holding jigs 14, 15, 115. SC is located opposite the assembly parts 1, 2, and 3 of the engine assembly E.

Further, when the drive cylinders 16, 116 are extended, the first stoppers 33, 133 and the second stoppers 34, 134 are in contact with each other, so that rotation of the jig support plates 13, 113 is prevented. The slide plates 12, 112 move forward toward the engine assembly E, and the oil pump OP, water pump WP, and seal cover SC move toward the assembly section 1,
Closely related to 2 and 3 respectively. At this time, the oil pump
OP, water pump WP and seal cover SC
are held by the holding tools 46, 108, 146, etc., and will not fall off when the jig support plates 13, 113 are in the upright position.

Moreover, oil pump OP, water pump WP
Even if the seal cover SC and the assembling parts 1, 2, and 3 are slightly misaligned, the jig support plates 13, 113 will swing to some extent due to the action of the elastic body 40, etc., and the misalignment will be tolerated.

With the oil pump OP, water pump WP, and seal cover SC being pressed against the engine assembly E, each nut runner device 8, 9 is operated and fastened. After completing the tightening, drive cylinder 1
6, 116 are retracted, the jig support plates 13, 113 operate in the opposite manner to the above and return to their original positions, ready for the next assembly.

C. Effect of the invention As described above, the device of the present invention includes a holding jig that can hold the assembled parts; The part to be assembled held in the holding jig is fixed by making it possible to change the posture between the horizontal position and the upright position to face the assembly, and to move toward and away from the assembly. A jig support plate supported by a fixed base on the side of the assembled body positioned at a certain position; a phasing mechanism disposed on the base; a drive mechanism disposed on the base for enabling power connection and disconnection with the phasing mechanism; a rotating member of the assembled component held on the holding jig; has a mating part that can be mated when the phase is correct, and is movable between a position above the holding jig on the jig support plate in a horizontal position and a position retracted laterally from the above position. Since it is equipped with a phase confirmation mechanism, it is possible to automatically align the phase of the rotating member in the assembled part and move the assembly to the assembly body, so that the assembly can be easily performed regardless of the work efficiency of the worker. Parts can be efficiently assembled into an assembly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an overall longitudinal sectional side view, FIG. 2 is an enlarged plan view of the first assembly device, and FIG. 3 is a cross-sectional view taken along the line -- in FIG.
Fig. 4 is an enlarged vertical sectional view of the main part during phase confirmation by the phase confirmation mechanism, Fig. 4A is a view taken in the direction of arrow A in Fig. 4, Fig. 4B is a sectional view taken along the line B-B in Fig. 4, and Fig. 5 6 is an enlarged plan view of the second assembly device, and FIG. 6 is an enlarged vertical sectional side view with a partial cutaway of the second assembly device. 11...Base, 13...Jig support plate, 14...
Holding jig, 62... Phase alignment mechanism, 72... Drive mechanism, 85... Phase confirmation mechanism, 96... Fitting portion,
C... Crankshaft as a drive shaft, E...
Engine assembly as an assembly, OP...Oil pump as an assembled part, R...Inner rotor as a rotating member.

Claims (1)

[Scope of utility model registration request] In a phasing assembly device for assembling a to-be-assembled part including a rotating member having an inner surface with a cross-sectional shape different from a circle into an assembly having a drive shaft to be fitted and connected to the inner surface thereof, A holding jig that can hold the parts to be assembled; the holding jig is provided, and a horizontal position for placing and holding the parts to be assembled on the holding jig; It enables posture change between the assembled part and the upright position facing the assembled part, as well as movement toward and away from the assembled part, and allows the side of the assembled part positioned at a fixed position to be moved toward and away from the assembled part. a jig support plate supported by a fixed base; a phasing mechanism disposed within the holding jig to drive an angular displacement of a rotating member of an assembled component held by the holding jig; a drive mechanism disposed on the base that enables power connection and disconnection with the mechanism; and a fitting that can be fitted to the rotating member of the assembled component held in the holding jig when the phase thereof is correct. and a phase confirmation mechanism that is movable between a position above the holding jig of the jig support plate in a horizontal position and a position retracted laterally from the above position. Assembly equipment.