JP3264621B2 - Spring seat mounting method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for mounting a spring seat, and more particularly, to a method for mounting a spring seat on a sleeve through which a valve stem is inserted, for example, in a cylinder head mounting process. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, in a cylinder head assembling step, first, a clip for preventing the sleeve from coming off is engaged with a groove formed on the outer periphery of the sleeve of the cylinder head. Next, after checking whether or not the clip is in a predetermined mounting state, the sleeve is inserted through a hole of the spring seat, and the spring seat is mounted. A spring is mounted around the valve stem, and the retainer is engaged with the end of the valve stem and assembled. At this time, the confirmation of the mounting state of the clip is visually determined by an operator, and the spring seat is manually mounted.

[0003]

However, the above-mentioned conventional method of mounting a spring seat requires a dedicated worker, which is labor intensive and thus raises production costs. There was a drawback that the production time was prolonged without much improvement.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and requires no manual operation, can reduce the production cost, and can shorten the manufacturing time. And an apparatus thereof.

[0005]

In order to achieve the above object, a step of inserting a columnar member into a hole of a spring seat mounted on a mounting table, and a step of holding a grip portion with respect to the columnar member. a step of gripping the spring seat is brought closer, moving the cylindrical member and the gripper, engaging the valve stem of the cylinder head into the cylindrical hole or recess formed in the axial center portion of the member check the step of positioning includes the steps of mounting the spring seat to the cylinder head is displaced in a direction away the gripping portion from the cylindrical member, the mounting state of the spring seat Te
On the other hand, the cylindrical member is replaced with the next spring seat.
It is inserted into the hole, a step of grasping by the grasping portion, or
And wherein the Rana Rukoto.

According to the present invention, the spring seat is mounted on the valve stem of the cylinder head from the mounting table by the mounting device, so that manual work is not required.

[0007] crossing this case, before the step of inserting the cylindrical member into the hole of the Sprint <br/> Gushito, and continuously feeding the spring seat in a passage from the parts feeder, and said passage to displace displaced freely the mounting table provided in one direction, before said communicated grooves passage to one of the mounting portion provided in the mounting table mounting of one the the sprint <br/> Gushito a first placing step of placing the portion, to displace the mounting table to the other, said communicated grooves of the passageway to the other mounting portion provided in the mounting table scan <br/> a second placing step of placing the pulling sheet to the other mounting part and having, two spring sheets gripped by the gripping unit, it is possible to simultaneously mounted on the cylinder head, the assembly time Can be shortened.

Further, in this case, a first detecting member which is provided so as to be relatively displaceable with respect to the first detecting member under the displacing action of the first detecting member is brought into contact with the concave bottom of the cylinder head. And a second contacting step of contacting the first detection member with a clip attached to a sleeve through which a valve stem is inserted under a further displacement action of the first detection member; and clip mounting confirmation step of confirming a mounting condition of the clip by detecting a relative displacement amount of the the detecting member second detection member, the mounting table a cylindrical member
Step of inserting the hole into the hole of the placed spring seat
And bringing the grip portion close to the columnar member to
A step of gripping the pulling sheet, Oyo said cylindrical member
Move the gripping part and form it at the axis of the cylindrical member.
Holes or recesses in the valve stem of the cylinder head
Engaging and positioning the gripping portion with the circle
The spring is displaced in a direction away from the columnar member,
It is preferable to include the step of mounting the seat on the cylinder head, since it is possible to confirm whether or not the clip is mounted before mounting the spring seat.

[0009] Furthermore, in this case, of the spring seat
Step of confirming a mounting condition, abuts the second detection member provided to freely displaced relative to the first detection member to displacement of the said first detection member with the projection of the spring seat a third contact step of, under a further displacement of the first detection member includes a fourth abutment step of abutting the first detection member to the edge of the spring seat, and
By the Ruco to confirm the mounted state of the spring seat by detecting a relative displacement of the first detecting member and said second detecting member, after mounting the spring seat, the spring seat is properly mounted It is possible to check whether or not the operation has been performed, which is preferable.

Further, according to the present invention, there is provided a cylindrical member having a hole or a concave portion with which the valve stem engages is formed in the shaft center portion, the cylindrical member being insertable into the hole of the spring seat, and being capable of approaching and separating from the cylindrical member. a gripping portion, and a biasing means for displacing the gripper in a direction toward or away from the cylindrical member, the
The above-mentioned switch attached to the cylinder head,
Detection means for confirming the mounted state of pulling a sheet, wherein a cylindrical member, and the gripping portion, a first driving means for displacing integrally vertically and horizontally with said biasing means, said detecting means Vertical and horizontal displacement
Comprising a second driving means that, the, the spring sheet
At the time of mounting on the Linda head, the first driving means was urged to insert the columnar member into the hole of the spring seat, and the spring seat was gripped by the gripping portion.
Thereafter, the valve stem is engaged with the hole or the concave portion of the columnar member, and the mounted state of the spring seat is checked.
At this time, the second driving means is urged so that the detecting means
The spring seat
While detecting the mounted state, the cylindrical member is moved to the next sp
Inserted into the hole of the ring sheet and gripped by the gripper
Vinegar Rukoto and features.

According to the present invention, first, the columnar member is inserted into the hole of the spring seat mounted on the mounting table.
Next, the urging means is urged to bring the plurality of grasping portions closer to each other to grasp the spring seat. Next, the first driving means is urged to move the cylindrical member and the gripping portion, and the valve stem of the cylinder head is engaged with a hole or a concave portion formed in the cylindrical member for positioning. Then, the spring seat is mounted on the valve stem by displacing the grip portions in a direction away from each other.

[0012] In this case, it said cylindrical member, said grip portion, and a said biasing means each two by two, said a cylindrical member, and said holding part, closer to said urging means with each other or a third driving means for displacing in a direction away, and the cylindrical member so as to correspond to the model of the cylinder head, and the bunch <br/> lifting unit, by adjusting the distance between the biasing means, one The spring seat can be mounted on a plurality of cylinder head models by the mounting device, which is preferable.

[0013] In this case, communication with the parts feeder, said a passage groove is formed in which the spring sheet is continuously fed, is provided at an end of the passage, be displaceable in the direction crossing the passage And a mounting portion provided on the mounting table and on which the spring seat is mounted. When the mounting table is displaced to one side, the groove portion of the passage communicates with one of the mounting portions. When the spring seat is placed and the mounting table is displaced to the other, the groove portion of the passage communicates with the other mounting portion, and the spring seat is placed, and each spring seat is gripped by the grip portion. Then, two spring seats can be simultaneously held and attached to the cylinder head, which is preferable.

[0014] Further, in this case, the detecting device, the first
A first detection member configured to be displaceable by one driving means; a first contact portion provided on the first detection member and capable of contacting a projection of a clip or a spring seat mounted on a cylinder head; A second detection member provided on the first detection member and configured to be displaceable with respect to the first detection member; and a bottom or spring seat provided on the second detection member and forming a recess of the cylinder head. A second contact portion that can freely contact the edge portion, and a sensor that detects a relative displacement amount of the first detection member and the second detection member are provided. From this configuration, the said first detection member second
When the attachment state of the clip or the spring seat is detected based on the displacement amount of the detection member, the attachment state of the clip is detected before attaching the spring seat, and after the spring seat is attached, whether or not the spring seat is attached properly. Can be detected, which is preferable.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A spring seat mounting apparatus according to an embodiment of the present invention is a cylinder head assembling apparatus 1.
0 is used. FIG. 1 shows a cylinder head assembling apparatus 10. The cylinder head assembling apparatus 10 includes a circular table 12, and the table 12 is configured to be rotatable in the direction of arrow A by a rotation driving source (not shown). At the top of the table 12, as shown in FIG.
The cylinder jig 14 is placed and the positioning jig 1
6 are provided so as to be deviated at every predetermined angle. As shown in FIG. 3, the positioning jig 16 has an upper surface 16 a inclined downward toward the edge of the table 12, and is fixed to the table 12 with screws 18. The positioning jig 16
A hole 20 formed in the table 12 is provided at a substantially central portion of the table 12.
Holes 22a and 22b coaxially communicating with the holes a and 20b are formed, and a step portion 24 is formed on a wall constituting the holes 22a and 22b. A tubular member 26 is inserted into the holes 22a and 22b. The cylindrical member 26 has a flange portion 28 protruding outward in the radial direction at a lower portion thereof. The flange portion 28 engages with the step portion 24 and is fixed to the positioning jig 16 with a screw 30. As can be easily understood from FIG. 3, the upper end of the tubular member 26 has the inclined upper surface 1.
6a. The positioning jig 16
A recess 34 having a step 32 is formed in the vicinity of one of the edge portions, and a pin member 36 is inserted into the recess 34. A flange portion 38 is formed on the outer periphery of the pin member 36,
The flange portion 38 is engaged with the step portion 32 to position the pin member 36. The upper portion of the pin member 36 is formed as a hemispherical smooth bulging surface.

The cylinder head assembling apparatus 10 is shown in FIG.
As shown in FIG. 5, the cylinder head transport device 40, the clip insertion device 42, the spring seat mounting device 44, the retainer assembling device 46, and the cylinder head unloading device 48 are arranged so as to be displaced by a predetermined angle around the table 12. Has been established.

Therefore, the spring seat mounting device 44 according to the present invention will be described in detail below.

The mounting device 44 has a parts feeder 47, and a part outlet of the parts feeder 47 has a passage 5 therein.
0 is linked. As shown in FIGS. 4 and 5, a groove 49 is formed in the passage 50 along a longitudinal direction thereof. In the groove 49, spring seats 52 are arranged in a line from the parts feeder 47 and conveyed. You.

In the vicinity of the passage 50, a supply device 54 for a spring seat 52 is provided. The supply device 54 includes a frame 56 having an L-shaped cross section, and a long substrate 58 is fixed to the frame 56. The substrate 58 is disposed so as to be deviated from the passage 50 by a predetermined angle. A protrusion 60 is formed on an upper portion of the substrate 58.
Is formed with a hole 62 communicating with the groove 49 of the passage 50. The projecting portion 60 has a plate-like portion 6 extending horizontally.
4 are formed, while grooves 66 a and 66 b are formed on the substrate 58 adjacent to the protrusion 60, and one groove 66 b is terminated by the protrusion 60.

The mounting members 6 are provided on both ends of the substrate 58.
8a, 68b are fixed, and the respective mounting members 68a, 68
b are provided with stoppers 69a and 69b, and the first cylinder 70 is fixed to one mounting member 68b. A columnar member 72 is fixed to the mounting members 68a and 68b in parallel with the substrate 58. An upwardly protruding projection 74 is formed at the upper center of the columnar member 72, and an end of the plate-like portion 64 contacts the projection 74. The plate-like portion 6
A light-emitting portion 76 is fixed across the projection 4 and the projection 74, and a light-receiving portion 78 is fixed at the lower center of the columnar member 72 so as to face the light-emitting portion 76 as shown in FIGS. 6 and 7. . A plurality of grooves 82a to 82d are formed in the upper part of the columnar member 72 in parallel with each other.

A long mounting member 84 is fixed to the surface of the substrate 58 facing the columnar member 72 along the longitudinal direction, and a rail member 86 is fixed to the mounting member 84. As shown in FIG. 7, the rail member 86 is provided with a slidable mounting table 90 having a cross section bent substantially in the shape of a crank. It is inserted into the gap with the substrate 58. The cylinder rod 92 of the first cylinder 70 is engaged with one end of the mounting table 90. Therefore, when the first cylinder 70 is urged, the mounting table 90 is moved in the direction of the arrow B or C
Displace in the direction. Both ends of the mounting table 90 can freely contact the stoppers 69a and 69b, and therefore, the mounting table 90 is configured to be displaced within the range of the stoppers 69a and 69b.

As shown in FIGS. 4 and 5, U-shaped concave portions 94a to 94f are formed in the upper portion of the mounting table 90,
When the mounting table 90 is at the position shown in FIG. 5, the recesses 94a to 94f are provided with the grooves 66a, 66b, 82a to 82f.
Communicate with 2d. Circular concave portions 96a and 96b are formed downward from the upper portion of the mounting table 90. Projections 98a to 98c are formed on the mounting table 90 at both ends and a central portion of the mounting table 90, and the projections 98a and 98c are respectively formed.
8b, 98b and 98c are formed as mounting portions 100a and 100b of the spring seat 52. Each of the mounting portions 100a and 100b has a groove 101a, 1
When the mounting table 90 is located at the position shown in FIG. 15 or FIG. 16, the light emitted from the light emitting unit 76 passes through the grooves 101 a and 101 b and the light receiving unit 78.
Received.

The mounting device 44, as shown in FIG.
A frame 102 is provided near the supply device 54, and a bent portion 103 is formed on the upper portion of the frame 102, as shown in FIG.
4 extends in the horizontal direction and is fixed. Plates 108a and 108b are fixed to both ends of the substrate 104 (FIG. 8).
), The cylinder rods 110a, 110b of the second cylinder 106 are located between the respective plates 108a, 108b.
The housing 112 of the second cylinder 106 is attached to the cylinder rods 110a and 110b by arrows D,
It is slidably provided in the E direction. The housing 112
, A displacement plate 114 is fixed, and the displacement plate 114 is provided with a gripping device 115 for the spring seat 52. As shown in FIG. 9, the gripping device 115
6, the cylinder rod 12 of the third cylinder 116
Oa and 120b are bridged between plates 118a and 118b fixed to the upper and lower portions of the displacement plate 114. A housing 122 of the third cylinder 116 is provided on the cylinder rods 120a and 120b so as to be slidable in the directions of arrows F and G.

A vertically long plate-like member 124 is fixed to the housing 122, and a lower end of the plate-like member 124 has an L-shaped mounting member 1 as shown in FIG.
A substantially square plate-like member 128 is fixed via the support 26.
A fourth cylinder 130, a fifth cylinder 130,
Cylinders 132 are fixed to face each other, and plate-like members 1 are attached to ends of the fourth cylinder 130 and the fifth cylinder 132.
Stoppers 137a, 137b via 35a, 135b
Is provided. The cylinder rods 134, 136 of the respective cylinders 130, 132 are arranged in a direction approaching or separating from each other. The respective cylinder rods 13
4 and 136 are sliding members 140a, 1
The sliding members 140a, 140b are slidably provided via linear guides 142a, 142b provided below the fourth cylinder 130 and the fifth cylinder 132. Plate members 144a and 144b are fixed to the sliding members 140a and 140b, and air chucks 146a and 146b are vertically extended to the plate members 144a and 144b. The air chuck 1
Plate-like members 147a and 147 are provided on the side surfaces of 46a and 146b.
b is fixed, and the lower portions of the plate members 147a and 147b are bent to form stoppers 149a and 149b. The air chucks 146a and 146b are
8a to 148d, and one gripper 148b, 148
As shown in FIG. 11, one d-shaped member 15
0a and 150b are fixed to the other gripping portions 148a and 148c, respectively, by extending two bar-shaped members 150c to 150f in the vertical direction. Each of the bar members 150a to 150
A groove 152 is formed in the lower part of f in the circumferential direction.

Rail members 154a and 154b are fixed to the plate-like members 147a and 147b so as to extend in the vertical direction, and the guide members 1 are attached to the rail members 154a and 154b.
Column members 158a, 158b via 56a, 156b
Are slidably provided. The columnar members 158a, 158
One ends of spring members 160a and 160b are provided at the upper end of b, and the other ends of the spring members 160a and 160b are provided on the plate members 144a and 144b. Therefore,
The columnar members 158a and 158b are connected to the plate member 144.
a, 144b. One ends of rod-shaped mounting members 162a and 162b are fixed to lower ends of the columnar members 158a and 158b, and the other ends of the mounting members 162a and 162b are gripping portions 148a and 148b of the air chucks 146a and 146b, respectively. , 14
8c and 148d. The mounting member 162
A cylindrical members 164a and 164b are fixed to the other end portions of the cylindrical members 164a and 162b so as to extend in the vertical direction.
A and 164b are formed with concave portions 166a and 166b having circular cross sections along the axial direction from the lower ends thereof.

The housing 11 of the second cylinder 106
As shown in FIGS. 12 and 13, a detection device 168 that detects a mounted state of the spring seat 52 is provided at one end of the second. The detection device 168 includes an elongated plate-like member 170 partially bent in an L shape, and the plate-like member 170 extends in the vertical direction and is fixed to the housing 112,
A sixth cylinder 174 is fixed to the plate member 170 so as to extend in the vertical direction via an L-shaped attachment member 172.
A rail member 176 is fixed to the plate member 170 so as to extend in the vertical direction, and a guide member 178 is slidably engaged with the rail member 176. The cylinder rod 180 of the sixth cylinder 174 is engaged with the guide member 178. Therefore, when the sixth cylinder 174 is urged, the guide member 178 slides in the directions of arrows F and G.

Fixing plates 184a and 184b are fixed to the guide member 178 via a mounting plate 182, and stoppers 186a and 184 are attached to upper ends of the fixing plates 184a and 184b.
86b, and the stoppers 186a, 186
The stopper 188a, 1
88b are formed. The fixing plates 184a, 184
b, plate-like first detection members 192a and 192b are slidably provided in the directions of arrows F and G via linear guides 190a and 190b, and the lower ends of the fixed plates 184a and 184b and the first detection member are provided. Spring members 194a and 194b are bridged over the upper ends of 192a and 192b. Therefore, the first detection members 192a and 192b are urged in the direction of arrow F. The respective first detection members 192a, 19
The lower part of 2b is bent to approach each other, and the parallel arms 196
a, 196b are formed. The arms 196a, 19
First contact portions 198a and 198b are formed at the lower end of 6b so as to be bent in a direction away from each other. The first contact portion 1
As shown in FIG. 12, grooves 200a and 200b having a U-shaped cross section are formed in 98a and 198b.

The surfaces of the first detecting members 192a and 192b opposed to the fixing plates 184a and 184b are provided with the parts shown in FIG.
As shown in the figure, the stoppers 186a, 186b, 18
8a, 188b are formed with protruding portions 202a, 202b which can be freely contacted, while stoppers 204a-204b are formed on the opposite surface.
204d are formed. The stoppers 204a, 2
The light-emitting portions 208a to 208d and the light-receiving portions 210a to 210d
Are fixedly attached.

The first detecting members 192a and 192b are provided with second detecting members 216a and 216b via linear guides 214a and 214b so as to be slidable in the directions of arrows F and G, respectively. The spring members 218a and 218b are bridged between a substantially central portion of the second detection member 216 and an upper end portion of the second detection members 216a and 216b. Therefore,
The second detection members 216a and 216b are urged in the direction of arrow F. Protrusions 220a and 220b are formed on the upper portions of the second detection members 216a and 216b so as to be in contact with the stoppers 204a to 204d.

The lower portions of the second detection members 216a and 216b are bent to form arm portions 222a and 222b parallel to each other, and the arm portions 222a and 222b are plate-shaped second contact portions 224a parallel to each other. To 224d are formed.
The second contact portions 224a and 224b, 224c and 224
The first contact portions 198a and 198b are slidably interposed between d. The second sliding portions 216a, 216
Plate members 226a to 226d are fixed to the upper part of b.
The plate members 226a to 226d are connected to the light emitting units 208a to 208a.
It is displaceable between 208d and the light receiving units 210a to 210d. The plate member 226a to 226d has a hole 22 formed therein.
8a to 228d are formed, and the light emitting portions 208a to 208d are formed.
The light emitted from 8d passes through the holes 228a to 228d and is received by the light receiving units 210a to 210d, so that the photoelectric sensors 212a to 212d generate signals, and the photoelectric sensors 212a to 212d generate signals. The amount of displacement with respect to one detection member 192a, 192b can be detected.

The spring seat mounting device according to the present embodiment is basically configured as described above. Next, the cylinder head 14 will be described.

As shown in FIG. 3, the cylinder head 14 has a large diameter portion 230 formed to have a large diameter.
And a reduced diameter portion 234 formed so as to have a small diameter upward from the large diameter portion 230 via the step portion 232, and a plurality of heat radiation fins 236 are formed on the outer periphery thereof.
A recess 238 forming a combustion chamber is formed on the lower surface of the cylinder head 14, and communicates with the recess 238 to form the intake hole 2.
40a and an exhaust hole 240b are formed. Each intake hole 2
The axial direction of the exhaust hole 40a and the exhaust hole 240b is deviated by a predetermined angle with respect to the bottom 241 of the cylinder head 14. Although not shown, the intake hole 240a and the exhaust hole 240b
It communicates with the outside of the cylinder head 14. The intake holes 240a and the exhaust holes 240b are formed with holes 242a and 242.
b, it communicates with a concave portion 244 formed in the reduced diameter portion 234. A circular protrusion 248 is formed on the bottom 246 forming the recess 244 so as to surround the openings of the holes 242a and 242b. A hole 250 through which a push rod (not shown) is inserted is formed in the bottom 246. Reference numeral 247 is a screw hole to which a column supporting a rocker arm (not shown) is fastened.

A substantially cylindrical sleeve 252 is inserted through the holes 242a and 242b, and grooves 254a and 254b are formed on the outer periphery of the sleeve 252 along the circumferential direction. A ring-shaped clip 255 made of a material such as an elastic metal is engaged with one of the grooves 252a, and the sleeve 252 is connected to the holes 242a and 242b.
From falling off. The sleeve 25
A tapered portion 256 whose diameter is reduced upward is formed on the upper part of 2. Rod-shaped valve stems 260a and 260b formed on the valves 258a and 258b are slidably inserted into the holes 257 of the sleeve 252. The valves 258a, 258b are connected to the valve stem 260a,
When 260b slides in the direction of arrow G, the intake hole 240a and the exhaust hole 240b are closed, respectively. Grooves 26 are formed in the upper part of the valve stems 260a and 260b in the circumferential direction.
2 are formed.

The cylinder head 14 has a plurality of holes 264 through which screws are inserted when the cylinder head 14 is assembled to an engine.

The cylinder head 14 is placed on the positioning jig 16, and the pin member 3 is inserted into the hole 264.
6 is inserted and positioned. At this time, the valve 2
58a, 258b contact the upper part of the tubular member 26,
The valves 258a and 258b do not fall off the sleeve 252. Also, since the positioning jig 16 is inclined at a predetermined angle, the valve stems 260a, 26
0b is erected in the vertical direction.

Next, the spring seat 52 mounted in the embodiment of the present invention will be described. As shown in FIGS. 14A and 14B, the spring seat 52 is formed in a circular shape from a material such as a plate-like metal, and a protrusion 266 protruding toward one surface is formed in a central portion so as to bulge. The projection 266 has a circular hole 268 formed therein. The sleeve 252 can be inserted through the hole 268.

Next, the spring seat mounting device 44
Will be described in relation to the spring seat mounting method according to the embodiment of the present invention.

First, as shown in FIGS. 4 and 5, a spring seat 52 is supplied from a passage 50 to a supply device 54. At this time, the spring seat 52 comes into contact with the protrusion 98b and is not placed on the placement portion 100a or 100b. The first cylinder 70 is urged in the direction of arrow C to
15 is displaced to the position shown in FIG. 15, the mounting portion 100a communicates with the hole 62, and the light emitted from the light emitting portion 76 is received by the light receiving portion 78 through the groove portion 101a (see FIG. 7). Then, when the spring seat 52 is conveyed to the mounting portion 100a through the hole 62, the light emitted from the light emitting portion 76 is blocked by the spring seat 52 and is not received by the light receiving portion 78.
2 is detected to be mounted on the mounting portion 100a. Next, when the first cylinder 70 is urged in the direction of arrow B and the mounting table 90 is displaced to the position shown in FIG. 16, the spring seat 52 is mounted on the mounting portion 100b. Also at this time, the light emitted from the light emitting unit 76 is blocked by the spring seat 52, and the spring seat 52 is
Is detected. As described above, the two spring seats 52 are mounted on the mounting table 90. Then, the first cylinder 70 is urged again, and the mounting table 90 is displaced to the position shown in FIG.

Next, the second cylinder 106 is urged so that the gripping device 115 is placed above the supply device 54 as shown in FIG.
Is displaced so that is positioned. In this case, the detection device 168 is located above the cylinder head 14. The third cylinder 116 is urged to hold the gripper 148.
When a to 148d are displaced in the direction of arrow F, the columnar members 164a and 164b
8 are inserted into the concave portions 96a and 96b (see FIG. 7). Next, the tips of the rod-shaped members 150a to 150f engage with the grooves 66a, 66b, 82a to 82d. When the air chucks 146a and 146b are urged,
8a and 148b, 148c and 148d approach each other,
The edges of the spring seat 52 are rod-shaped members 150a to 150
0f is engaged with the groove 152. For this reason, the spring seat 52 is gripped by the grippers 148a to 148d. Then, the third cylinder 116 is urged to hold the gripper 14.
When 8a to 148d are displaced in the direction of arrow G, the spring seat 52 is gripped and displaced.

At this time, the attachment state of the clip 255 attached to the sleeve 252 of the cylinder head 14 is checked. In this case, when the detection device 168 is displaced in the direction of arrow F by urging the sixth cylinder 174, the lower end portions of the second contact portions 224a to 224d are brought into contact with the bottom portion 246 of the cylinder head 14 as shown in FIG. Abut When the detecting device 168 is further displaced, as shown in FIG. 18, the second detecting members 216a and 216b are displaced from the spring members 218a and 218b.
Is displaced relative to the first detection members 192a and 192b against the pulling force of the first detection members 192a and 192b, and the first contact portions 198a and 198b contact the clip 255. For this reason, the plate-shaped member 226
a to 226d are displaced, and the plate members 226a and 226c are displaced.
Holes 228a, 228c of the photoelectric sensors 212a, 212
2c, the photoelectric sensors 212a, 212c
Generates a signal. Therefore, it can be confirmed that the clip 255 is attached to the sleeve 252.

If the clip 255 is not mounted on the sleeve 252, the second contact portions 224a to 222d
Because the lower end of does not come into contact with the clip 255,
The second detection members 216a and 216b are connected to the first detection member 192.
a, 192b does not displace relative to the photoelectric sensor 2
12a and 212c do not generate a signal. Therefore, it is detected that the clip 255 is not mounted.

Incidentally, since there is an error in the position of the cylinder head 14, by further displacing the detecting device 168 in the direction of the arrow F, the second abutting portions 224a to 224d are surely moved by the tensile force of the spring members 194a and 194b. Abuts against the bottom 246 of the cylinder head 14 so that the user can check the mounting state of the clip 255 regardless of the error of the cylinder head 14.

When the confirmation of the mounting state of the clip 255 is completed, the sixth cylinder 174 is urged to fix the fixing plate 184a,
184b is raised.

Next, the second cylinder 106 is urged to hold the spring seats 52 in the holding portions 148a to 148a.
8d is displaced above the cylinder head 14. At this time, the spring seats 52 urged by the fourth cylinder 130 and the fifth cylinder 132 to be gripped by the gripping portions 148a and 148b and 148c and 148d are moved by the cylinder head 1
The fourth valve stem 260a, 260b is displaced so as to be separated by an interval corresponding to the valve stem 260a, 260b.

The third cylinder 116 is urged to hold the grip 14
When 8a to 148d are displaced in the direction of arrow F, as shown in FIG. 19, the upper portions of the valve stems 260a and 260b become concave portions 166a and 166 of the cylindrical members 164a and 164b.
b and is positioned therein, and the upper portion of the sleeve 252 contacts the lower portions of the columnar members 164a and 164b. When the air chucks 146a and 146b are urged to displace the grip portions 148a and 148b and 148c and 148d in the directions away from each other, the sleeve 252 is inserted through the hole 268 of the spring seat 52, and the bottom 246 of the cylinder head 14 is moved. Placed on

Next, the state of attachment of the spring seat 52 is confirmed. In this case, as shown in FIG. 8, the second cylinder 106 is urged so that the detecting device 168 is moved to the cylinder head 1.
When the detecting device 168 is displaced in the direction of arrow F by urging the sixth cylinder 174 to move the detecting device 168 in the direction of arrow F, the lower ends of the second contact portions 224a to 222d are Abut the edge of When the detecting device 168 is further displaced, as shown in FIG. 21, the second detecting members 216a and 216b are displaced from the spring members 218a and 218b.
Is displaced relatively to the first detection members 192a and 192b against the pulling force of the first contact portions 198a and 198b, and the lower ends of the first contact portions 198a and 198b contact the protrusion 266 of the spring seat 52. For this reason, the plate members 226a to 226d are displaced,
Holes 228b, 228d of plate members 226b, 226d
Is displaced into the gap between the photoelectric sensors 212b and 212d, and the photoelectric sensors 212b and 212d generate a signal. Therefore, it can be confirmed that the spring seat 52 is mounted on the sleeve 252.

At this time, the error of the position of the cylinder head 14 can be corrected by further displacing the fixing plates 184a and 184b in the direction of arrow F as described above.
8a and 198b surely come into contact with the edge of the spring seat 52, so that the mounted state of the spring seat 52 can be checked regardless of the error of the cylinder head 14.

In this case, the supply device 54 is supplied with the spring seat 52 from the parts feeder 47, and the holding device 115 holds the spring seat 52 to be mounted on the next cylinder head 14. Therefore, the spring seat 52 can be mounted on the cylinder head 14 continuously.

[0049]

According to the spring seat mounting apparatus of the present invention, the following effects and advantages can be obtained.

The spring seat supplied from the parts feeder is mounted on a cylinder head by a mounting device.
At the same time, the mounting state of the clip and the spring seat is checked, so that a dedicated worker is not required, so that the production cost can be reduced and the manufacturing time can be shortened.

Further, when the spring sheet is supplied from the supply device,
Since the spring seats are supplied one by one, two spring seats can be mounted on the cylinder head, and the manufacturing time can be further reduced.

Further, the mounting device has two cylindrical members, two grip portions, and two urging means, each of which can be displaced in accordance with the interval between the sleeves of the cylinder head. Even if the model of the cylinder head is changed, the same device can be used to mount the spring seat.
Therefore, a mounting device corresponding to the model is not required, and a unique effect of further reducing the production cost can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a cylinder head assembling apparatus in which a spring seat mounting apparatus according to an embodiment of the present invention is used.

FIG. 2 is a schematic plan view showing a table of the cylinder head assembling apparatus of FIG. 1;

FIG. 3 is a longitudinal sectional view showing a cylinder head used in the method for mounting a spring seat according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a supply device used in the spring seat mounting device of the present invention.

FIG. 5 is a plan view of the supply device of FIG. 4;

FIG. 6 is a front view of the supply device of FIG. 4;

FIG. 7 is a sectional view taken along line VII-VII of the supply device of FIG. 6;

FIG. 8 is a schematic front view of a spring seat mounting device according to an embodiment of the present invention.

FIG. 9 is a perspective view of a gripping device used in the mounting device of FIG. 8;

FIG. 10 is a side view of the gripping device of FIG. 9;

FIG. 11 is a partially enlarged perspective view showing a grip portion of the grip device of FIG. 9;

FIG. 12 is a perspective view of a detection device used in the mounting device of FIG.

FIG. 13 is a side view of the detection device of FIG.

14 shows a spring seat used in the spring seat mounting method according to the embodiment of the present invention, and FIG.
4A is a plan view, and FIG. 14B is a longitudinal sectional view.

FIG. 15 is a plan view showing a method of using the supply device of FIG. 4 and in a state where the mounting portion is displaced in the direction of arrow C;

FIG. 16 is a plan view showing a method of using the supply device of FIG. 4, in a state where the mounting portion is displaced in the direction of arrow B;

FIG. 17 is a partially enlarged side view showing a method of using the detection device of FIG. 12, in a state where a second contact portion is in contact with a bottom portion of the cylinder head.

FIG. 18 is a partially enlarged side view showing a method of using the detection device of FIG. 12, in a state where a first contact portion is in contact with a clip.

FIG. 19 is a longitudinal sectional view showing a method of using the gripping device of FIG. 9 and in a state where a valve stem is engaged with a concave portion of a columnar member.

FIG. 20 is a partially enlarged side view showing a method of using the detection device of FIG. 12, in a state where a second contact portion is in contact with an edge of a spring seat.

FIG. 21 is a partially enlarged side view showing a use method of the detection device of FIG. 12, in a state where a first contact portion is in contact with a protrusion of a spring seat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Cylinder head assembling device 14 ... Cylinder head 44 ... Mounting device 50 ... Passage 52 ... Spring seat 54 ... Supply device 90 ... Mounting table 70, 106, 116, 130, 132, 174 ... Cylinder 100a, 100b ... Mounting part 115: gripping devices 148a to 158d: gripping portions 164a, 164b
... Cylindrical member 168 ... Detection device 192a, 192b, 216a, 216b ... Detection member 198a, 198b, 224a to 224d ... Contact part 210a to 210d ... Photoelectric sensor 252 ... Sleeve 258a, 258b ... Valve

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-4-13522 (JP, A) JP-A-63-144921 (JP, A) JP-A-60-62488 (JP, A) JP-A-5-142 192830 (JP, A) JP-A-1-308315 (JP, A) JP-A-62-24925 (JP, A) JP-A-62-48430 (JP, A) JP-A-60-228034 (JP, A) Japanese Utility Model Hei 2 2-82525 (JP, U) Japanese Utility Model 63-120736 (JP, U) Japanese Utility Model 7-17431 (JP, U) Japanese Utility Model 61-1447311 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B23P 19/00-21/00

Claims (8)

(57) [Claims] A step of inserting a cylindrical member into a hole of a spring seat mounted on a mounting table; a step of gripping the spring seat by bringing a grip portion close to the cylindrical member; cylindrical member and moving the grasping portion, and a step of positioning engaged with the valve stem of the cylinder head to the cylindrical axis hole or recess formed in the portion of the member, the cylindrical said gripping portion a step of mounting the spring seat to the cylinder head is displaced in a direction away from the member, while confirming the mounted state of the spring seat, the
Insert the cylindrical member into the hole of the next spring seat
So, a step of grasping by the grasping portion, the mounting method of the spring seat, characterized in Tona Rukoto. 2. A method of mounting the spring seat according to claim 1, before the step of inserting the cylindrical member into the hole of the spring seat, successively the split <br/> Ngushito from the parts feeder passage It said manner and supplying to the mounting table which is provided displaceably in a direction intersecting the passageway is displaced in one direction, communicates the groove of the passage on one of the mounting portion provided in the mounting table a first placing step of placing a spring seat on one of the bearing member the causes mounting table is displaced in the other, and communicating groove of the passageway to the other mounting portion provided in the mounting table method of mounting a spring seat and having a second placing step of placing the split <br/> Ngushito on the other mounting portion Te. 3. A first abutment in which a second detection member provided so as to be relatively displaceable with respect to the first detection member under the action of displacement of the first detection member is brought into contact with the concave bottom of the cylinder head. A second contacting step of contacting the first detection member with a clip attached to a sleeve through which a valve stem is inserted under a further displacement action of the first detection member; the second and the clip mounting confirmation step of confirming a mounting condition of the clip by detecting a relative displacement of the detecting member, the hole of the spring seat mounted on the mounting table a cylindrical member
A step for inserting the parts, the split is brought closer to the grip portion with respect to the cylindrical member
Gripping the sheet, and moving the columnar member and the gripper to form the columnar member.
Insert the hole or recess formed in the shaft center of the member into the cylinder.
Positioning the valve stem by engaging the valve stem of the pad, and displacing the grip portion in a direction away from the columnar member.
And attach the spring seat to the cylinder head
And a method of mounting a spring seat. 4. A method of mounting the spring seat according to claim 1 or 2 wherein the step of confirming the mounted state of the spring seat, before
Serial third to abut the second detection member provided to freely displaced relative to the first detection member with the projection of the <br/> spring seat to displacement of the first detection member a contact step, under a further displacement of the first detection member includes a fourth abutment step of abutting the first detection member to the edge of the spring seat, the said first detection member the second method of attaching the spring seat, wherein the benzalkonium to confirm the mounted state of the spring seat by detecting a relative displacement of the detection member with. 5. The hole or recess with which the valve stem engages.
Formed in the axial center portion, an insertion freely cylindrical member into the hole of the spring seat, and toward and away freely grip portion to the cylindrical member, the displacement of the gripping portion in a direction toward or away from the cylindrical member Urging means to be provided and before being attached to the gripper and attached to the cylinder head.
Detection means for confirming the mounted state of the serial spring seat, wherein a cylindrical member, and the gripping portion, a first driving means for displacing integrally vertically and horizontally with said biasing means, said detecting means In the vertical and horizontal directions
Comprising a second driving means, wherein the time of the spring seat mounting <br/> to the cylinder head, to bias the first driving means is inserted through said cylindrical member to the hole portion of the spring seat, said holding part By
After gripping the spring seat to engage the valve stem in the hole or recess of said cylindrical member, said split
When checking the mounting state of the driving seat, the second driving means
To change the detection means with respect to the valve stem.
To detect the mounting state of the spring seat.
On the other hand, the cylindrical member is inserted into the hole of the next spring seat.
Inserted to the mounting device of the spring seat which is characterized that you gripped by the gripper. 6. The mounting device of the spring seat according to claim 5, wherein a cylindrical member, wherein a grip portion, and a said biasing means by two people each, said cylindrical member, said holding part And before
A third driving means for displacing the serial biasing means in a direction toward or away from each other, adjusted with the cylindrical member so as to correspond to the model of the cylinder head, and the grip portion, the distance between the biasing means A mounting device for a spring seat, comprising: 7. A spring seat mounting device according to claim 5, wherein a passage is formed in a groove communicating with a parts feeder and to which said spring seat is continuously supplied, and provided at an end of said passage. A mounting table that is displaceable in a direction intersecting the passage, and two mounting sections provided on the mounting table and on which the spring seats are mounted. When the spring seat is placed with the groove portion of the passage communicating with the mounting portion, and the mounting table is displaced to the other, the groove portion of the passage communicates with the other mounting portion, and the spring seat is placed.
The spring seat mounting device, wherein each spring seat is gripped by the grip portion. 8. The spring seat mounting device according to claim 5, wherein said detecting means comprises: a first detecting member which is configured to be displaceable by said first driving means; A first contact portion provided on the detection member and capable of contacting a projection of a clip or a spring seat mounted on the cylinder head; and a first contact portion provided on the first detection member and freely displaceable with respect to the first detection member. A second contact member provided on the second detection member, the second contact portion being capable of contacting a bottom portion forming a recess of the cylinder head or an edge of a spring seat; and the first detection member. JP detecting a mounted state of the clip or spring seat by the displacement amount of the sensor for detecting a relative displacement amount of the second detection member, wherein the said first detection member second detection member and Mounting device of the spring seat to be.