JP2600466Y2 - Device for holding and transporting annular members - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping / conveying apparatus which can convey an annular member, for example, a raw tire or a belt / tread band while gripping the same from outside.

[0002]

2. Description of the Related Art A conventional ring-shaped gripping and conveying device includes, for example, a support ring having a horizontal central axis, moving means for moving the support ring in the axial direction, and A plurality of movable bodies movably supported and circumferentially separated from each other, driving means for synchronously moving the movable bodies in the radial direction, and a gripper connected to a radially inner end of each movable body are provided. A moving ring, rotatably supported by a supporting ring body and coaxial with the supporting ring body, a hydraulic cylinder supported by the supporting ring body to rotate the rotating ring, and radially moving the rotating motion of the rotating ring. And a stop mechanism for stopping the hydraulic cylinder at an arbitrary position are known.

[0003] When the annular member is gripped and conveyed by this, first, a hydraulic cylinder is operated to rotate a rotating ring. The rotation of the rotating ring is converted into a radial movement by a conversion mechanism. The movable body and the gripping body are synchronously moved inward in the radial direction. Then, when the gripper contacts the annular member and grips the annular member from the outside, the hydraulic cylinder is stopped at the position by the stop mechanism. Next, the support ring is moved in the axial direction by the moving means, and the annular member gripped by the gripper is transported.

[0004]

However, such a conventional gripping and conveying device for an annular member requires a hydraulic means for operating the hydraulic cylinder and a stop mechanism for stopping the hydraulic cylinder at an arbitrary position. However, these are all expensive, so that there is a problem that the whole apparatus becomes expensive and the structure becomes complicated.

An object of the present invention is to provide an inexpensive and simple structure for holding and transferring an annular member.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a support ring having a horizontal central axis, moving means for moving the support ring in an axial direction, and a support ring which is movable in a radial direction. A plurality of movable bodies supported in the circumferential direction and separated from each other; a driving means for synchronously moving the movable bodies in a radial direction; and a grip detachably connected to a radially inner end of each movable body via a connecting means. The holding member is synchronously moved radially inward together with the movable body by the driving means, whereby the annular member is gripped from outside by these gripping bodies, and then the support ring body is axially moved by the moving means. By moving in the direction, the gripping and transporting device for the annular member configured to transport the gripped annular member,
The drive means is rotatably supported by a support ring body and is coaxial with the support ring body, an air cylinder supported by the support ring body and rotating the rotation ring, and rotating the rotation ring in a radial direction. And a conversion mechanism for converting the transmission to each movable body, and fixing the fixed stopper and the rotation stopper that come into contact with each other when the movable body moves inward in the radial direction to the support ring body and the rotation ring, respectively. In addition, these fixing, a clamping block that clamps from both sides when the rotation stopper abuts, and a contact / separation mechanism that fixes the clamping block and approaches / separates the rotation stopper are provided. From a large number of gripping bodies manufactured in advance for each type of member, select and replace gripping bodies that match the type. It can be achieved by.

[0007]

In order to transport a predetermined type of annular member while gripping it, first the support means is moved in the axial direction by the moving means, and the annular member is surrounded by the gripping body from the outside. Next, when the air cylinder is operated to rotate the rotating ring, this rotation is converted into a radial movement by the conversion mechanism, and the movable body and the gripping body move inward in the radial direction in synchronization with each other. Then, when each gripper grips the annular member from the outside and the movable body reaches the innermost in the radial direction, the rotation stopper comes into contact with the fixed stopper, and the rotation of the rotating ring, that is, the movable body, radially inward of the gripper. Stops moving. At this time, the gripping body that grips the annular member is selected from a large number of gripping bodies manufactured in advance according to each type of the annular member, and the gripping body whose radial thickness, shape, and the like match the type is selected. Since it is mounted on the movable body, the gripping pressure of the annular member, that is, the contact pressure can be easily set to an appropriate value. Moreover, in order to hold the annular member as described above, only the air cylinder and the fixing and rotation stoppers are required, so that the apparatus is inexpensive and the structure is simple. Next, the holding / blocking mechanism is operated to fix the holding block and approach the rotation stopper. The holding block is fixed and the rotation stopper is held from both sides. Thereafter, the support ring is moved in the axial direction by the moving means, and the annular member is transported to the next step. here,
Although an external force directed radially outward may be applied to the annular member, the rotation of the rotating ring is prevented by the holding block because the holding block holds the fixing and rotation stoppers from both sides as described above. The body is prevented from moving outward in the radial direction, and the quality of the annular member is prevented from deteriorating. Next, when there is a change in the type of the annular member to be gripped and conveyed, a gripper whose thickness in the radial direction, shape, or the like matches the type is selected from many grippers and replaced.

Further, according to the present invention, it is not necessary to frequently correct the misalignment in order to prevent rattling even if wear occurs due to long-term use. . Further, if configured as described in claims 5 and 6,
The exchange time of the gripper can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 denotes a pair of rails laid on a floor surface 12, and wheels 14 rotatably supported on the lower surface of a movable carriage 13 are in rolling contact with these rails 11. A ring main body 15 whose center axis is horizontal and parallel to the rail 11 is fixed on the movable carriage 13. The movable carriage 13 and the ring main body 15 as a whole constitute a support ring body 16 whose central axis is horizontal. Reference numeral 17 denotes a cylinder mounted on the floor 12 between the rails 11 and parallel to the rails 11. The tip of a piston rod 18 of the cylinder 17 is connected to a connecting member 19 mounted on the movable carriage 13. The above-described cylinder 17 and connecting member 19 as a whole constitute moving means 20 for moving the support ring body 16 in the axial direction along the central axis.
16 can move between an enclosing position surrounding the forming drum D from the outside and a separating position separated from the forming drum D. Here, on the outer periphery of the forming drum D, an annular member K, for example, a green tire, a belt and a tread band is supported.

1, 2, 3, and 4, a plurality of pairs extending in the radial direction, here 11
A pair of guide rails 23 is fixed, and the plurality of pairs of guide rails 23 are arranged at equal distances in the circumferential direction.
The paired guide rails 23 are each composed of a pair of guide rails 23, and the paired guide rails 23 are parallel to each other. 24 is plural, here 11
Each of the movable bodies 24 has a pair of slide bearings 25 slidably engaged with the corresponding guide rail 23. As a result, the movable body 24 is supported by the support ring body 16 via the guide rail 23 and the slide bearing 25 so as to be movable in the radial direction. A plurality of, here three, support members 28 extending toward one side in the axial direction are fixed to the outer periphery of the ring main body 15, and one end of these support members 28 is provided with a plurality of support rollers.
29 are rotatably supported. Reference numeral 30 denotes a rotating ring which is provided on one axial side of the ring main body 15 and is coaxial with the ring main body 15.The outer periphery of the rotating ring 30 is in rolling contact with the support roller 29, and as a result, the rotating ring 30
Is rotatably supported by the support ring body 16 via the support member 28 and the support roller 29. This rotating ring
On the other side in the axial direction of 30, a plurality of inclined cam grooves 32 which are inclined in the same direction with respect to the tangential direction, here 11 inclined cam grooves 32 which are the same number as the movable body 24, are formed. They are arranged equidistantly. A cam follower 33 as a transmission member that can move in the inclined cam groove 32 in the longitudinal direction is inserted into each of the inclined cam grooves 32, and these cam followers 33 are movable members via pins 34.
Each is rotatably supported by 24. As a result, when the rotating ring 30 rotates, the cam follower 33 and the movable body 24 are synchronously moved in the radial direction while being guided by the guide rail 23 by being pushed by the side surface of the inclined cam groove 32. Reference numeral 37 denotes a bracket fixed to the outer periphery of the ring main body 15, and the head side of the air cylinder 38 is connected to the bracket 37. The tip of the piston rod 39 of the air cylinder 38 is connected to the rotating ring 30 via a connecting block 40. As a result, when the air cylinder 38 operates and the piston rod 39 projects or retracts, the rotating ring 30 becomes a support ring. It rotates around the central axis while being supported by the body 16. The above-described inclined cam groove 32, cam follower 33, and pin 34 as a whole
A conversion mechanism 41 for converting the rotational motion of the rotary ring 30 into a radial movement and transmitting the rotary motion to the movable body 24 is configured.
30, the air cylinder 38, and the conversion mechanism 41 are movable bodies as a whole.
Drive means 42 for synchronously moving 24 in the radial direction is configured.

A guide rail 45 extending in the axial direction is provided at a radially inner end of each movable body 24. Each guide rail 45 is fixed to one end in the axial direction and the other end in the axial direction of the movable body 24, respectively. Side and other side guide rails 46 and 47, and an intermediate guide rail 49 fixed to the movable body 24 between the one side and the other side guide rails 46 and 47 so as to be separated from them. And these one side, the other side guide rails 46, 47
The width of the intermediate guide rail 49 at the radially inner end is larger than the width at the radially outer end. Here, the intermediate guide rail 49 has a T-shaped cross section, and both have the same cross sectional shape. The one side guide rail 46 is a first guide portion 46a which is separated in the axial direction.
And a second guide portion 46b.
A one-side lock body 50 having the same cross-sectional shape as the guide rail 45 is disposed between the guide portions 46a and 46b. Reference numeral 51 denotes a cylinder as a lock mechanism attached to one end of the movable body 24 in the axial direction. The distal ends of the piston rods 52 of these cylinders 51 are connected to the one-side lock body 50. Then, this cylinder 51 is operated and the piston rod
When the 52 protrudes or retracts, the one-side lock body 50 is in the radial direction, that is, the inner limit where the flange 53 abuts the step 54 of the one-side guide rail 46, and the flange 53 abuts the radially inner end of the movable body 24. It can move between adjacent outer limits. On the other hand, the other side guide rail 47 is also a one side guide rail.
Similar to 46, the first and second guide portions 47a and 47b are configured, and the other-side lock body 55 is disposed between the first and second guide portions 47a and 47b. And these other side lock bodies 55 are also connected to the tip of the piston rod 57 of the cylinder 56 as a lock mechanism fixed to the other end in the axial direction of the movable body 24, and the flange 58 is connected to the step 59 of the other side guide rail 47. It is possible to move in a radial direction between an inner limit that abuts and an outer limit where the flange 58 abuts the radial inner end of the movable body 24.

[0012] 62 is a plurality, here the same number as the movable body 24
A guide groove 63 that extends in the axial direction and opens at one end and the other end in the axial direction of the holding body 62 is formed at the outer end of the holding body 62 in the radial direction. In addition, each guide groove
63 is a T-shaped section having the same cross-sectional shape as the guide rail 45,
It can be slidably fitted to the guide rail 45. Then, each gripper 62 is moved in the axial direction so that the guide groove
After the 63 and the other side guide rail 47, the other side lock body 55, the intermediate guide rail 49, the one side guide rail 46, and the one side lock body 50 are fitted while sliding, the piston rod 52 of the cylinders 51 and 56 is fitted. , 57 are retracted and the ridges 63a formed at the radially outer end of the gripping body 62 are pressed against the movable body 24 by the lock members 50 and 55 on one side, and each gripping body 62
Locked to 24 each. The above-described one-side and other-side lock bodies 50 and 55 are arranged on an extension of each guide rail 45 as a whole, and constitute a lock body 65 which is slidably fitted in each guide groove 63. The rail 45, the guide groove 63, the cylinders 51 and 56, and the lock body 65 as a whole constitute connecting means 66 for detachably connecting the gripping body 62 to the corresponding radially inner end of the movable body 24. Thus, the connecting means is attached to the movable body 24.
The gripping bodies 62 are connected to each other by 66. These gripping bodies 62 are formed from a large number of gripping bodies 62 that have been manufactured in advance, and the thickness in the radial direction and the gripping surface 62a are determined according to the type of the annular member K to be gripped. The gripping bodies 62 whose shapes and the like match are selected and connected.

A pin hole 68 extending in the radial direction is formed at a radially outer end of the gripping body 62, more specifically, at the bottom of the guide groove 63 at the axial center of the gripping body 62. On the other hand, at the center in the axial direction of each movable body 24, a cylinder chamber 70 is formed radially outward of the intermediate guide rail 49, and a piston 71 is housed in these cylinder chambers 70 so as to be movable in the radial direction. . These pistons 71 are integrally connected with radially extending pins 72 whose inner ends in the radial direction can be inserted into the pin holes 68, and these pins 72 pass through the intermediate guide rail 49. A spring 73 for urging the pin 72 radially outward is interposed between the piston 71 and the intermediate guide rail 49, and a cylinder chamber between the piston 71 and the bottom surface of the cylinder chamber 70. A fluid passage 74 is connected to 70. The cylinder chamber 70 described above,
The piston 71 as a whole constitutes a moving mechanism 75 for moving the pin 72 in the radial direction.
When the pin 72 is moved radially inward and the radial inner end of the pin 72 is inserted into the pin hole 68, each gripping body 62 is easily and reliably positioned at a predetermined axial position (centering position) with respect to the movable body 24. Positioned.

1, 5 and 6, reference numeral 78 denotes a rotating ring 30.
The guide block is fixed to the movable carriage 13 on one side in the axial direction, and a stopper body 79 is provided at the other end of the guide block 78. A contact member 81 is attached to the stopper body 79 with a liner 80 interposed therebetween, and the liner 80 is replaced with a liner having a different thickness as necessary. The above-described stopper body 79, liner 80, and contact member 81 constitute a fixed stopper 82 fixed to the support ring body 16 as a whole. Reference numeral 83 denotes a rotation stopper fixed to one side in the axial direction of the rotating ring 30.When the rotating ring 30 rotates and the movable body 24 moves to the innermost side in the radial direction, the rotation stopper 83 It comes into contact with the contact member 81. When the rotation stopper 83 comes into contact with the fixed stopper 82 in this manner, the rotation of the rotation ring 30 is prevented, and the movable body 24 stops at the innermost side in the radial direction. The rotation stopper 83 has an inclined surface 83a that is inclined so that the side surface on the side separated from the fixed stopper 82 approaches the fixed stopper 82 as it goes to one side in the axial direction. A slide groove 85 is formed in the guide block 78, and a U-shaped holding block 86 is accommodated in the slide groove 85 so as to be movable in the axial direction. The inner surface of the holding block 86 adjacent to the rotation stopper 83 is an inclined surface 86a having the same inclination angle as the inclined surface 83a of the rotation stopper 83. Reference numeral 87 denotes a cylinder as an axially extending contact / separation mechanism attached to one end of the guide block 78 in the axial direction. The tip of a piston rod 88 of the cylinder 87 is connected to the holding block 86. When is operated, the holding block 86 moves in the axial direction while being guided by the slide groove 85 and is fixed, and approaches and separates from the rotation stoppers 82 and 83. When the rotation stopper 83 comes into contact with the fixed stopper 82 and the piston rod 88 of the cylinder 87 projects,
The clamping block 86 is a fixed, rotating stopper that abuts each other
The rotation of the rotary ring 30, that is, the movement of the movable body 24 in the radial direction is restricted by sandwiching the rollers 82 and 83 from both sides.

Reference numeral 89 denotes a ring body 15 on an extension of the cylinder 87.
A plurality of pressing rollers 84 that are in rolling contact with the other side surface of the rotating ring 30 are rotatably supported by the bracket 89. When the holding block 84, the fixed and the rotation stoppers 82 and 83 are pressed to the other side in the axial direction by the cylinder 87, the pressing roller 84 separates the rotating ring 30 from the supporting member 28 and the supporting roller 29, and the ring body 15 Prevent moving to the side.

Next, the operation of the first embodiment of the present invention will be described. Now, it is assumed that a predetermined type of annular member K is supported around the forming drum D. Next, this annular member K
To grip and transport to the next process, first
By actuating the piston rod 18, for example, to project, the support ring body 16 is moved axially along the rail 11,
The movement of the support ring 16 stops when the gripping body 62 in the expanded state reaches the surrounding position surrounding the annular member K from the outside. Next, the air cylinder 38 is operated to operate the piston rod 39.
To rotate the rotating ring 30 supported by the supporting roller 29 clockwise in FIG. Thereby, the cam follower 33 receives the pressing force in the width direction of the inclined cam groove 32 from the inclined cam groove 32, but the movable body 24 and the cam follower 33 are allowed to move only in the radial direction by the guide rail 23 and the slide bearing 25. As a result, the cam follower 33, the pin 34, and the movable body 24 move radially inward as a unit by being pushed by the radially outer surface of the inclined cam groove 32. And
Such movement of the moving body 24 inward in the radial direction is performed by all the movable bodies 24 in synchronization with each other, so that the diameter of the gripping body 62 is reduced.

When each gripping body 62 grips the annular member K from the outside and all the movable bodies 24 reach the innermost in the radial direction, the rotation stopper 83 fixed to the rotating ring 30 contacts the fixed stopper 82. The rotation of the rotating ring 30, that is, the movement of the movable body 24 and the gripping body 62 inward in the radial direction is stopped. At this time, the gripper 62 that grips the annular member K
Is a gripping body 62 whose thickness in the radial direction, shape of the gripping surface 62a, etc. matches the annular member K to be gripped, from among a large number of gripping bodies 62 manufactured in advance in accordance with each type of the annular member K. Since it is selectively attached, the gripping pressure of the annular member K, that is, the contact pressure can be easily set to an appropriate value. Moreover, in order to grip the entire annular member K with an appropriate contact pressure as described above, only the air cylinder 38 having a simple and inexpensive structure and a simple structure for fixing and rotating stoppers 82 and 83 are required. Inexpensive and simple structure. Next, cylinder 87
To protrude the piston rod 88 and hold the pinch block 86
Are fixed along the slide groove 85 and approach the rotation stoppers 82 and 83, and are fixed by the clamping block 86, and the rotation stoppers 82 and 83 are clamped from both sides. At this time, the rotation stopper 83 has an inclined surface 83a, and the holding block 86 has an inclined surface.
86a is formed, fixed, rotation stopper 82,
83 is easily and reliably held by the holding block 86 from both sides. Then, when the fixing and the rotation stoppers 82 and 83 are clamped from both sides by the clamping block 86 in this way,
The rotating ring 30 cannot rotate, and the movable body 2
4. The gripper 62 also cannot move in the radial direction. Next, the diameter of the forming drum D is reduced, and the annular member K is transferred from the forming drum D to the holding body 62.

Thereafter, the cylinder 17 is actuated to retract the piston rod 18, for example, to move the support ring body 16 axially to a separated position separated from the forming drum D, for example, to a position surrounding the forming drum in the next step. An annular member K held by the body 62 is arranged around the forming drum. Next, the diameter of the forming drum is expanded, and the annular member K is gripped from the inside by the forming drum. At this time, a large external force may be applied to the annular member K from the forming drum toward the outside in the radial direction. Here, when the rotation stopper 83 is pressed against the fixed stopper 82 only by the air pressure of the air cylinder 38, the gripping body 62 may be pushed back outward in the radial direction by this external force. Fixed as shown, holding the rotation stoppers 82 and 83
Therefore, the rotation of the rotary ring 30 is strongly prevented, so that the movement of the gripping body 62 to the outside in the radial direction is reliably prevented, and the quality of the annular member K is prevented from deteriorating. Next, after retracting the piston rod 88 of the cylinder 87 and fixing the holding block 86 and disengaging it from the rotation stoppers 82 and 83, the piston rod 39 of the air cylinder 38 is retracted and the rotating ring 30 is turned counterclockwise in FIG. By rotating, the movable body 24 is synchronously moved outward in the radial direction. As a result, the gripper 62 expands in diameter and is separated from the annular member K, and the annular member K is transferred from the gripper 62 to the forming drum. Such an operation is repeated, and the annular member K is conveyed one after another while being gripped.

Next, when the type of the annular member K to be gripped is changed, the radial thickness and the gripping surface 62a are selected from a large number of gripping bodies 62 manufactured in advance.
The gripper 62 whose shape and the like match is selected and replaced. In this case, first, the cylinders 51 and 56 are operated to project the piston rods 52 and 57, and the one side and the other side lock bodies 50 and 55 are slightly moved inward in the radial direction. body
50 and 55 are detached from the ridge 63a of the gripping body 62. Thereby, each gripper 62 is released from the lock by the one-side and the other-side lock bodies 50 and 55. At this time, one side, the other side lock body 50, 55
Is overlapped on one side, the other side guide rails 46, 47, one side,
The other side lock bodies 50, 55 and one side, the other side guide rails 46, 47 are recognized as a series of continuous guide rails. Next, when the supply of fluid to the cylinder chamber 70 through the fluid passage 74 is stopped, the piston 71 and the pin 72 are urged radially outward by a spring 73, and the pin 72 is pulled out of the pin hole 68 and the intermediate guide rail Retract into 49. Next, the unnecessary gripping body 62 is moved to the other side in the axial direction along the guide rail 45 and the lock body 65, and is pulled out from the guide rail 45 and the lock body 65. At this time, each of the lock bodies 65 is located on an extension of the guide rail 45 and is fitted in the guide groove 63, and thus does not hinder the movement of the grip body 62.

Next, the selected holding body 62 is inserted into the guide groove 63.
The guide rail 45 and the lock body 65 are moved to one side in the axial direction while being fitted. Then, the movement of these gripping bodies 62 stops when the pin 72 and the pin hole 68 reach the position where they face each other.
Also at this time, since each lock body 65 is located on the extension of the guide rail 45, the guide groove 63 and the lock body 65 are fitted to each other and do not hinder the movement of the grip body 62. Next, a fluid is supplied to the cylinder chamber 70 through the fluid passage 74,
The piston 71 and the pin 72 are moved radially inward to
The radial inner end of 72 is inserted into the pin hole 68. Thereby, the axial position of each gripper 62 with respect to the movable body 24 is positioned at a predetermined position (centering position). Next, the piston rods 52, 57 of the cylinders 51, 56 are slightly retracted, and the one-side and other-side lock bodies 50, 55 are slightly moved outward in the radial direction. ,
55, the ridge 63a of the gripping body 62 is pressed against the movable body 24,
The holding body 62 and the movable body 24 are locked and connected to each other. At this time, since the width of the guide rail 45 at the radial inner end is larger than the width at the radial outer end, the gripping body 62 and the movable body 24 are firmly connected. As described above, the gripping body 62 can be replaced only by moving the lock body 65 in the radial direction and moving the gripping body 62 along the guide rail 45, thereby shortening the replacement time and improving work efficiency.

FIGS. 7 and 8 show a second embodiment of the present invention. In this embodiment, the rotating ring 30 is formed with a plurality of widened inclined cam grooves 90 similar to the inclined cam grooves 32 and the pins 34 attached to each movable body 24.
In addition to the cam follower 33, the base ends of the pair of arms 91 and 92 are swingably supported, and the distal ends of the arms 91 and 92 rotate the cam followers 95 and 96 via pins 93 and 94. As possible, and one end of the pin 34 to the arm 91,
The other end is connected to the arm 92, and a spring 97 is provided for urging the arms 91 and 92 radially inward. As a result, the cam followers 33 in each inclined cam groove 90 are
The biasing force of the spring 97 is pressed against the radially outer surface of the inclined cam groove 90, while the cam followers 95 and 96 are pressed against the radially inner surface of the inclined cam groove 90 by the biasing force of the spring 97. As a result, even if the inclined cam groove 90 and the cam follower 33 are worn out based on long-term use, it is not necessary to frequently perform correction work to prevent misalignment due to rattling in the inclined cam groove 90 of the cam follower 33. . Arms 91 and 92, cam followers 95 and 96, spring described above
97 as a whole constitutes an urging member 98 for urging the gripping body 62 and the cam follower 33 as a transmitting member outward in the radial direction. In this second embodiment, arms 91 and 92, cam followers 95 and 96, springs
The cam follower 33 located below the center axis of the ring main body 15 moves radially outward due to its own weight of the movable body 24, the gripping body 62, etc., and is provided on the radially outer surface of the inclined cam groove 90. Because it is pressed, the arm as described above
The pins 91 and 92, the cam followers 95 and 96, and the spring 97 may be provided on the pin 34 located above the central axis of the ring main body 15. Also, instead of the arms 91, 92, etc. as described above,
One end is the radial outer end of the ring body 15 and the other end is each moving body.
Install multiple springs locked on 24, support body 24,
The gripper 62 may be urged radially outward by the spring to press the cam follower 33 against the radially outer surface of the inclined cam groove.

FIGS. 9 and 10 show a third embodiment of the present invention. In this embodiment, a plurality of conversion mechanisms (11) formed on one axial side surface of each movable body 24 and inclined in the same direction with respect to the tangent ) And a plurality of first holding bodies rotatably supported on the rotating ring 30 via the pins 102 and engaged with one side surface of each of the tilting rail bodies 99, here the radial inner surface. And a plurality of cam followers 104 as second holding members rotatably supported on the rotating ring 30 via the pins 103 and engaged with the other side surface of each inclined rail body 99, here the radially outer surface. ,
The cam followers 100 and 104 hold the inclined rail body 99 from both sides. Here, the pins 102 and 103 are eccentric pins bent in the shape of a crank at the center, and as a result, when assembling or when play occurs between the inclined rail body 99 and the cam followers 100 and 104, When the pins 102 and 103 are slightly rotated to move the cam followers 100 and 104 in the width direction of the inclined rail body 99 to abut on both side surfaces thereof, the inclined rail body 99 is pressed from both sides by the cam followers 100 and 104. Therefore, there is no play between the inclined rail body 99 and the cam followers 100 and 104.

FIG. 11 is a diagram showing a fourth embodiment of the present invention. In this embodiment, an inclined cam groove 107 parallel to the inclined cam groove 32 is formed radially outward of the plurality of inclined cam grooves 32 formed on the rotating ring 30, and the inclined cam groove 1 is formed.
An inclined rail 108 is formed between the inclined cam groove 07 and the inclined cam groove 32 that forms a pair with the inclined cam groove 107. On the other hand, each movable body 24 rotatably supports, via a pin 110, a cam follower 109 as a first holding member that engages with one side surface of each inclined rail 108, here, a radially inner surface. A cam follower as a second holding member that engages the other side of the body 108, here the radially outer side.
111 is rotatably supported via a pin 112, and the inclined rail 108 is sandwiched from both sides by these two cam followers 109 and 111. Here, also in this embodiment, as in the third embodiment, the pins 110 and 112 are eccentric pins that are bent in a crank shape at the center, and as a result,
By rotating these pins 110 and 112, the cam followers 109 and
When the 111 is moved in the width direction of the inclined rail 108, the cam followers 109 and 111 come into contact with both side surfaces of the inclined rail 108, so that there is no play. In this embodiment, a conversion mechanism is constituted by the inclined rail 108 and the cam followers 109 and 111.

In the above-described embodiment, the movable body 24
The guide rail 45 is provided at the radially inner end of the gripper 62, and the guide groove 63 is formed at the radially outer end of the gripper 62. In the present invention, the radial outer end of the gripper 62 is provided at the radially outer end. A guide rail whose width at the portion is larger than the width at the radial inner end may be provided, and a guide groove may be formed at the radial inner end of the movable body 24.

[0025]

As described above, according to the present invention, the annular member can be gripped from the outside with an appropriate contact pressure, and the apparatus can be inexpensive and the structure can be simplified. Further, when the annular member is being gripped, the gripper is prevented from moving in the radial direction, so that it is possible to prevent the quality of the annular member from deteriorating.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway right side view.

FIG. 3 is a front view of the vicinity of a movable body and a gripping body.

FIG. 4 is a sectional view taken along the line II of FIG. 3;

FIG. 5 is a sectional view taken along the line II-II in FIG.

6 is a sectional view taken along the line III-III in FIG. 5;

FIG. 7 is a front view showing the vicinity of a movable body according to a second embodiment of the present invention.

8 is a sectional view taken along the line IV-IV in FIG. 7;

FIG. 9 is a front view of the vicinity of a movable body showing a third embodiment of the present invention.

FIG. 10 is a sectional view taken along the line VV of FIG. 9;

FIG. 11 is a front view showing the vicinity of a movable body according to a fourth embodiment of the present invention.

[Explanation of symbols]

 16 ... Support ring body 20 ... Moving means 24 ... Movable body 30 ... Rotating ring 38 ... Air cylinder 41 ... Conversion mechanism 42 ... Driving means 62 ... Grasping body 66 ... Connecting means 82 ... Fixed stopper 83 ... Rotation stopper 86 ... Nipping block 87 … Contact mechanism K… Ring member

Claims (6)

(57) [Scope of request for utility model registration] 1. A support ring having a horizontal central axis, moving means for moving the support ring in the axial direction, and a plurality of radially movably supported by the support ring and spaced apart from each other in the circumferential direction. A movable body, a driving unit for synchronously moving the movable body in the radial direction, and a gripping body detachably connected to a radially inner end of each movable body via a connecting means, wherein the gripping body is provided. The ring member was gripped from outside by these gripping members by synchronously moving radially inward together with the movable body by the driving means, and then the supporting ring body was axially moved by the moving means to be gripped. In the gripping / conveying device for an annular member adapted to transport the annular member, the driving means is rotatably supported by a support ring body and coaxial with the support ring body, and supported by the support ring body. Is an air cylinder for rotating the rotating ring, constitute a rotational movement of the rotary ring and the conversion mechanism to convert the radial movement is transmitted to the movable body, from, and,
When the movable body moves to the innermost side in the radial direction on the support ring body and the rotation ring, the fixed stopper and the rotation stopper that come into contact with each other are fixed, and when the fixed and rotation stoppers come into contact, the holding block is held from both sides. And a fixing / separating mechanism for fixing and holding the holding block to approach / separate from the rotation stopper, and when there is a change in the type of the annular member, from among a large number of gripping bodies manufactured in advance according to each type of the annular member. And a gripping / conveying device for an annular member, wherein a gripping body matching the type is selected and replaced. A plurality of inclined cam grooves formed on a rotary ring and inclined with respect to a tangential direction and separated from each other in a circumferential direction, and movably inserted into the inclined cam grooves supported by the movable members. And a transmission member, and
A gripping body, a gripping member located at least above the center axis of the support ring member, and a biasing member for biasing the transmission member outward in the radial direction are provided, and the transmission member is disposed outside the inclined cam groove in the radial direction. 2. The holding and conveying device for an annular member according to claim 1, wherein the rattling is prevented by pressing against a side surface. 3. A conversion device according to claim 1, wherein said conversion mechanism includes a plurality of inclined rails formed on each movable body and inclined with respect to a tangential direction of the rotating ring, and a plurality of engagement mechanisms supported by the rotating ring and engaged with radially inner surfaces of the respective inclined rails. And a plurality of second holding bodies supported by the rotating ring and engaged with the radially outer surface of each inclined rail body and holding the inclined rail body from both sides together with the first holding body. The gripping / conveying device for an annular member according to claim 1, wherein the first and second holding bodies are movable in the width direction of the inclined rail body. 4. A conversion mechanism, comprising: a plurality of inclined rails formed on a rotating ring, inclined with respect to a tangential direction and separated from each other in a circumferential direction; and a radially inner surface of each inclined rail supported by each movable body. A first holding member to be engaged, and a second holding member supported by each movable body, engaged with a radially outer surface of each inclined rail, and holding the inclined rail together with the first holding member from both sides; The gripping / conveying device for an annular member according to claim 1, wherein the first and second holding members are movable in a width direction of the inclined rail. 5. A guide rail provided at a radially inner end of each movable body, said guide means extending in an axial direction and having a width at a radially inner end larger than a width at a radially outer end. A guide groove formed at a radially outer end of each gripper, extending in the axial direction and slidably fitted to the guide rail, and a guide groove disposed on an extension of each guide rail so as to be slidable in each guide groove. 2. The gripping / conveying device for an annular member according to claim 1, comprising: a lock body to be fitted; and a lock mechanism for locking the gripper to the movable body by moving each lock body in a radial direction. 6. A guide rail provided at a radially outer end of each gripper, extending in the axial direction and having a width at the radially outer end larger than a width at the radially inner end. A guide groove formed at a radially inner end of each movable body and extending in the axial direction and slidably fitted to the guide rail; and a guide groove arranged on an extension of each guide rail so as to be slidable in each guide groove. 2. The gripping / conveying device for an annular member according to claim 1, comprising: a lock body to be fitted; and a lock mechanism for locking the gripper to the movable body by moving each lock body in a radial direction.