JP2001287123A - Separation device and method for seal ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate and supply assuredly many sets of seal rings one by one. SOLUTION: The seal rings 41 set in a large number on a main shaft 35 and an idle shaft 47 comprising a coil spring 43 around them are moved along the coil spring 43 by rotation of the main shaft 35 to have them separated one by one by a separation roller 59 rotated synchronously with the main shaft 35. Then by having the seal rings 41 reach an inclined face 71 of the separation roller 59, seal rings 41a sticking out upward are pushed to a right direction for a first separation action, one seal ring 41 is pushed downward at a vertex of a pentagon part 67 of the separation roller 59 to release close adhesion to the successive seal ring 41 for a second separation action, and the seal rings 41 are inserted under a roller body part 65 at a boundary between the roller body part 65 and the pentagon part 67 without damaging the seal rings 41 for a third separation action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal ring separating apparatus and method for separating and supplying a large number of set seal rings one by one.

[0002]

2. Description of the Related Art As a device for supplying a seal ring one by one, for example, there is a parts feeder provided with a spiral groove in a hopper. In a state in which a number of seal rings put in the hopper are aligned, the spiral groove is swung and moved toward the upper part of the hopper, and is supplied to the outside from the upper part of the hopper. However, in this parts feeder, when the linear shape of the seal ring is as thin as 2.5 mm or less and the inner diameter is relatively large as 30 mm or more, the seal ring is deformed on the way or adheres to each other in the spiral groove. Clogged up
It is difficult to supply seal rings.

[0003] Further, there is an apparatus which uses a magazine as shown in FIG. In this, a large number of seal rings 7 pushed downward by a weight 5 are set on a magazine 3 suspended on a hanger 1. When the pan 9 disposed below the magazine 3 receives one seal ring and moves leftward from the state of FIG. 6 by the cylinder 11, one seal stored in the pan 9 is received. The ring 7 is cut out and supplied.

[0004] With respect to the above-mentioned drop-in cut-out supply by the magazine, it is difficult to supply one by one to a seal ring having a thin linear shape of 2.5 mm or less and a large inner diameter of 30 mm or more.

Further, as shown in FIG. 7, there is a method in which the uniaxial ball screw 13 is rotated by a motor 15 to supply the seal ring 17 along the screw groove. At present, it cannot supply.

In order to solve the above-mentioned problem, the present applicant has proposed an apparatus as shown in FIG. 8 (see Japanese Patent Application Laid-Open Nos. 8-187624 and 10-296551). This device includes a coil spring 2 attached to a main shaft 19 which is driven to rotate by a servo motor (not shown) and an idle shaft 21 arranged in parallel with the main shaft 19.
3 and 25, respectively, and each shaft 1
Numerous seal rings 27 are set in 9, 21 in a state where tension is generated. The coil spring 23 mounted on the main shaft 19 is in a state in which the center portion is in close contact with the coil spring 23 and both sides are separated from each other, and the pitch changes over the entire length.

[0007] By rotating the main shaft 19,
Many seal rings 27 set at the right end in the figure
Are the coil springs 23 and 25 in the central close contact portion.
, And sequentially moves to the left in the figure while being aligned. The separation roller 29, which rotates in synchronization with the main shaft 19, separates the sequentially moving seal rings 27 one by one and drops the gap between the pitches of the distant portions of the coil spring 23. One separated seal ring 27 is
It is guided by the fin-shaped guide 30 and falls downward.

[0008]

However, in the above-mentioned conventional apparatus provided with a separation roller for separating the seal rings one by one, the seal ring is prevented from being broken at the time of assembly. If, for example, high-viscosity oil is adhered to the seal ring, it is difficult to separate the seal rings that are in close contact with each other with the oil, so that a phenomenon occurs in which it is not possible to supply only one seal ring and a plurality of seal rings are simultaneously supplied. If the feed force of the seal ring is weakened to prevent a plurality of feeds, the seal ring stagnates and the feed operation itself becomes impossible.

Accordingly, an object of the present invention is to make it possible to reliably separate and supply seal rings one by one.

[0010]

In order to achieve the above object, a first aspect of the present invention is to provide a main shaft for sequentially moving a large number of set seal rings along a spiral portion provided around the periphery by rotation. An idle shaft arranged at a predetermined interval so that tension is applied to the plurality of seal rings bridged between the main shaft and
Separation of a seal ring rotatable in synchronization with the main shaft and provided with a separation roller disposed close to the main shaft on the front side in the moving direction of the seal ring and for separating the seal rings one by one In the apparatus, a corner portion which presses the outer peripheral portion of one moving seal ring to separate it from an adjacent subsequent seal ring on an outer peripheral portion of an end portion of the separation roller on which the seal ring is set. Is provided.

According to the seal ring separating apparatus having such a configuration, a large number of seal rings set in a state where tension is applied between the main shaft and the idle shaft are spirally rotated by rotation of the main shaft. The roller is sequentially guided toward the separation roller side, and the corner provided on the outer periphery of the end of the separation roller presses the outer periphery of the moving frontmost one seal ring toward the center. And separate the adjacent sealing ring which follows.

According to a second aspect of the present invention, in the configuration of the first aspect, a plurality of corners are provided along a circumferential direction.

According to the above configuration, the adjacent seal rings are reliably and continuously separated by the plurality of corners.

According to a third aspect of the present invention, in the configuration of the second aspect of the invention, the plurality of corners are formed by forming a polygonal portion on the end face of the separation roller.

According to the above construction, the rotation of the separation roller causes the vertices of the polygonal portion to sequentially press the outer periphery of the seal ring, and separate from the adjacent seal ring.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, a small-diameter portion having a small diameter with respect to the roller body is provided at an end of the separation roller on the side where the seal ring is set. A corner portion is provided on an outer periphery of the small-diameter portion, and forms an outer peripheral portion of the roller main body portion and an end surface of the roller main body portion on the small-diameter portion side at a boundary portion between the small-diameter portion and the roller main body portion. Angle is more than 80 degrees 110
It is configured to be less than or equal to the degree.

According to the above configuration, when the seal ring separated by the corner enters between the roller body and the main shaft, the subsequent seal ring is formed at the boundary between the roller body and the small diameter portion. It is prevented from entering between the main body and the main shaft together with the preceding seal ring after the separation. At this time, if the angle formed between the outer peripheral portion of the roller main body and the end face of the roller main body on the small diameter side is less than 80 degrees, the seal ring is easily damaged, and the angle is 110 degrees. If the obtuse angle is greater than, the subsequent seal ring will enter between the roller body and the main shaft together with the preceding seal ring, and the separation roller will rise.

According to a fifth aspect of the present invention, there is provided a main shaft for sequentially moving a plurality of set seal rings along a helical portion provided around the main shaft by rotation, and the plurality of seal rings bridged between the main shaft. An idle shaft disposed at a predetermined interval so that tension is applied to the seal ring, and rotatable in synchronization with the main shaft, and disposed near the main shaft on the front side in the moving direction of the seal ring. And a separation roller for separating the seal rings one by one, wherein an end surface of the separation roller on which the seal ring is set is positioned at a right angle to a central axis of the separation roller. The configuration is such that the surface is inclined.

According to the above construction, a large number of seal rings set in a state where tension is applied between the main shaft and the idle shaft are guided by the helical portion by the rotation of the main shaft, and are sequentially separated by the separation roller. When the roller moves toward the side and reaches the inclined surface of the separation roller end surface, the separation roller rotates while the inclined surface contacts the outer peripheral portion of the seal ring, and the seal ring that overlaps and protrudes from the other seal ring is removed. Shake back and forth in the moving direction to separate the overlapping seal rings from each other.

According to a sixth aspect of the present invention, in the configuration according to the fifth aspect of the present invention, the inclined surface is located at a rotational position where the axial length of the outer peripheral surface of the separation roller is minimum on the main shaft side, and this minimum outer peripheral position is provided. The angle between the plane and the plane is 110 degrees or less.

When the above angle exceeds 110 degrees, a plurality of seal rings which are kept overlapping each other,
The separation roller enters the outer peripheral portion side of the continuous separation roller in a state closer to a straight line with respect to the inclined surface.

According to a seventh aspect of the present invention, in the configuration of any one of the first to sixth aspects, a helical portion is provided on the idle shaft.

According to the above construction, the rotation of the main shaft causes the idle shaft to rotate via the seal ring set with tension applied thereto, and the spiral ring also performs the feed operation of the seal ring on the idle shaft side. Done.

According to an eighth aspect of the present invention, in the configuration according to any one of the first to seventh aspects, the spiral portion is constituted by a coil spring.

According to the above configuration, the seal ring is sequentially fed by the rotation of the coil spring accompanying the rotation of the main shaft.

According to a ninth aspect of the present invention, a number of seal rings are set in a state where tension is applied to a main shaft and an idle shaft which are arranged at a predetermined interval from each other. The seal ring moves along a spiral portion provided on the outer periphery of the main shaft, and a separation roller that separates the seal rings one by one by a separation roller that rotates in synchronization with the main shaft at a front side in the moving direction. In the method of separating rings, when the seal ring reaches the inclined surface of the end surface of the separation roller, the inclined surface overlaps another seal ring and swings the protruding seal ring back and forth in the movement direction to perform the first separation operation. And the seal ring reaches the corner provided on the outer periphery of the separation roller. By pressing the outer periphery of one of the seal rings toward the center to perform the second separating action, and furthermore, the seal ring reaches the boundary between the roller body and the corner having a larger diameter than the corner, This boundary portion is a method of separating the seal ring that performs a third separating action of inserting one seal ring between the roller body and the main shaft.

According to the above-described method for separating the seal rings, the first separation operation separates the seal rings overlapping each other, and the second separation operation separates the preceding seal ring from the subsequent seal ring that is in close contact with the seal ring. Separation from the seal ring is provided, and the third separating action prevents the subsequent seal ring from entering between the roller body and the main shaft together with the preceding seal ring.

[0028]

According to the first aspect of the present invention, the outer peripheral portion of the one end of the separation roller on which the seal ring is set is pressed against the outer peripheral portion of one seal ring to form an adjacent seal ring. Since the corners for separation are provided, even if the seal rings are in close contact with each other due to the attachment of high-viscosity oil, the separation operation can be reliably performed.

According to the second aspect of the present invention, since a plurality of corners are provided, adjacent seal rings can be reliably and continuously separated by the plurality of corners.

According to the third aspect of the present invention, the plurality of corners are formed by forming a polygonal portion on the end face of the separation roller. Since the outer circumference of the seal ring is sequentially pressed, the separation operation from the adjacent seal ring can be performed.

According to the fourth aspect of the present invention, a small-diameter portion having a small diameter with respect to the roller body is provided at the end of the separation roller on the side where the seal ring is set, and the corner portion is formed on the outer periphery of the small-diameter portion. Since the angle between the outer peripheral portion of the roller main body and the end surface of the roller main body on the side of the small diameter at the boundary between the small diameter portion and the roller main body is set to 80 degrees or more and 110 degrees or less. When the seal ring separated by the corner enters between the roller main body and the main shaft, a subsequent seal ring is formed between the roller main body and the main shaft at the boundary between the roller main body and the small diameter portion. In addition, it is possible to prevent the seal ring from entering along with the preceding seal ring after the separation while preventing damage to the seal ring.

According to the fifth aspect of the present invention, the end face of the separation roller on the side where the seal ring is set is a slope inclined with respect to a plane perpendicular to the center axis of the separation roller. The seal ring that overlaps and protrudes on the outer peripheral side of another seal ring can be separated by swinging.

According to the sixth aspect of the present invention, the inclined surface is located at a rotational position where the axial length of the outer peripheral surface of the separation roller is minimum on the main shaft side, and the angle formed with the minimum outer peripheral surface is 110. Since it is set to be equal to or less than the degree, it is possible to prevent the plurality of seal rings overlapping each other from entering the outer peripheral side of the separation roller.

According to the seventh aspect of the present invention, the spiral portion is provided on the idle shaft, so that the seal ring is also fed by the spiral portion on the idle shaft side, so that the separating operation can be performed more effectively. .

According to the eighth aspect of the present invention, since the helical portion is constituted by a coil spring, the helical portion can be easily formed at low cost.

According to the ninth aspect of the present invention, when a large number of seal rings reach the inclined surface of the separation roller, the seal ring comes into contact with the inclined surface and is shaken to perform the first separating operation, and further separates. By reaching the corner provided on the outer periphery of the roller, the corner is pressed toward the center of the outer periphery of one seal ring to perform the second separating action, and the roller body having a larger diameter than the corner is formed. By reaching the boundary with the angle, the subsequent seal ring is prevented from entering together between the roller body and the main shaft, and only the preceding seal ring is entered, thereby providing the third separation. Since the action is performed, even if the seal rings are in close contact with each other due to the adhesion of high-viscosity oil, the separation operation can be reliably performed.

[0037]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a seal ring separating device according to an embodiment of the present invention. The separating device has a base plate 31 and a bearing block 33 attached to the base plate 31 has The main shaft 35 is horizontally and rotatably supported via a bearing. The main shaft 35 is connected to the base plate 3.
It is interlockingly connected to a servomotor 39 mounted on a motor bracket 37 installed on the top 1, and its tip is a free end that is not supported at all.

On the outer peripheral surface of the main shaft 35, a spiral for moving a large number of seal rings 41 such as an O-ring, a cut seal, etc., bundled together when rotated by the servo motor 39 to the distal end side. A coil spring 43 as a part is fixed.

The coil spring 43 is provided with an unraveling area A for displacing the bundle of seal rings 41 one by one and moving the seal ring 41 toward the tip end of the main shaft 35.
The unsealed seal ring 41 is transported in a substantially aligned state, and the preceding seal ring 41 and the subsequent seal ring 41 are transferred.
And the separated seal ring 4 that can be reliably separated even when they are in close contact with each other.
1 and a re-contact prevention area C for preventing mutual re-contact with each other.

The unraveling area A is provided on the base side of the main shaft 35, and the pitch of the coil spring 43 in the unraveling area A is set to an appropriate pitch such that only one seal ring 41 is inserted. .

The separation region B is provided continuously over the opening region A, and is provided over an appropriate length such that a plurality of seal rings 41 can be aligned in a state of being in close contact with each other. Reference numeral 43 is formed in a close contact state so that the seal ring 41 is not interrupted. Accordingly, in the separation region B, a shallow spiral groove having a pitch substantially equal to the wire diameter of the coil spring 43 is formed by the close contact of the coil spring 43. Can be transferred to

The re-contact prevention area C is separated from the separation area B
And between the end of the main shaft 35 and
The pitch of the coil spring 43 in the re-contact prevention area C is set so as to increase the speed of moving the separated seal ring 41 toward the distal end to prevent re-contact with the subsequent seal ring 41. 41 are formed at a pitch several times the diameter of the cross section.

As is clear from the above configuration, the pitch of the coil spring 43 provided on the main shaft 35 differs depending on the open area A, the separation area B and the re-contact prevention area C. Therefore, a spiral groove may be formed on the outer peripheral surface of the main shaft 35 instead of the coil spring 43 as the spiral portion. However, the pitch can be changed at the time of manufacturing the coil spring 43, rather than processing the spiral groove. It is easy and cheap.

In order to apply an appropriate tension to the bundle of seal rings 41 set in the unwinding area A of the coil spring 43 in the main shaft 35, an idle shaft is provided below the main shaft 35. 47 is provided so as to be vertically adjustable and rotatable.

More specifically, the idle shaft 47
The bearing block is supported horizontally and rotatably by a bearing (not shown) which is supported by the bearing block 33 so as to be vertically adjustable, and is supported by a support bracket 49 erected on the base plate 31 so as to be vertically adjustable. The base end is horizontally and rotatably supported by 51. Although not shown in detail, the bearing block 51 is screwed with, for example, a screw mechanism operated by a lever 53, and is operated by operating the lever 53 to be positioned vertically along the support bracket 49. It is configured to be adjustable.

A coil spring 55 as a spiral portion is provided in a region corresponding to the open region A and the separation region B on the base side of the idle shaft 47. The coil spring 55 is not always necessary, and may be omitted in some cases. Further, it is also possible to provide a coil spring 55 over the entire length of the idle shaft 47 with a different pitch corresponding to each region according to the coil spring 43.

The tip of the idle shaft 47 extends to a position close to the tip of the main shaft 35, and the tip of the idle shaft 47 guides the separated seal ring 41 to fall. A fin-shaped guide 57 is detachably installed.

Above the main shaft 35, a roller support shaft 61 rotatably provided with a separation roller 59 at its tip.
Are provided horizontally and vertically movable. More specifically,
As with the bearing block 51, the support block 49
The lifting block 63 supported so that the vertical position can be adjusted
The base end of the roller support shaft 61 is supported, and the separation roller 59 is rotatably supported at the front end of the roller support shaft 61 extending near the front end of the main shaft 35.

FIG. 2 is a view taken in the direction of arrow D in FIG.
Reference numeral 9 denotes a roller main body portion 65 at a position corresponding to the re-contact prevention region C, and a pentagonal portion located at an end of the separation region B on the re-contact prevention region C side and having a smaller diameter than the roller main body portion 65. 67, and a roller small-diameter portion 69 which is located in a region approximately one-third the length of the separation region B and has a smaller diameter than the pentagonal portion 67.

The roller main body 65 is set so that its outer peripheral surface almost contacts the coil spring 43 in the state of FIG. The pentagonal portion 67 has a width dimension substantially the same as the thickness of one seal ring 41, and as shown in FIG.
However, the outer peripheral portion of one seal ring 41 is pressed downward in FIG. 1 to be separated from the subsequent seal ring 41. In the state of FIG. 1, the gap between the outer peripheral surface and the outer peripheral surface of the main shaft 35 is set such that the roller small-diameter portion 69 does not substantially contact the seal ring 41 located on the outer periphery of the coil spring 43. I have.

An end surface on the right side of the roller small diameter portion 69 in FIG. 1 is an inclined surface 71 inclined with respect to a plane perpendicular to the central axis of the separation roller 59. This inclined surface 71 is
At the rotation position (the state shown in FIG. 1) where the axial length on the outer peripheral surface of the separation roller 59 is minimum on the main shaft side,
The angle θ formed with the minimum outer peripheral surface is 110 degrees or less. Here, it is 110 degrees.

In the above configuration, the bearing block 51
And raise the idle shaft 47 to the main shaft 3
5, the lifting block 63 and the roller support shaft 61 are raised to separate the separation roller 59 from the main shaft 35 and then locked. Further, the fin-shaped guide 57 is removed from the tip of the idle shaft 47.

In this state, the seal ring 41 bundled together is bundled with the main shaft 35 and the idle shaft 47.
And set on the base side of the unraveling area A. After the setting, the idle shaft 47 is lowered to apply an appropriate tension to the seal ring 41 collected as a single bundle, and the separation roller 59 is unlocked and then lowered and locked again to lock the tip end of the idle shaft 47. The fin-shaped guide 57 is mounted on the fin.

As described above, when the bundle of seal rings 41 is opened and set in the region A,
When the main shaft 35 is rotated by the servo motor 39, the coil spring 43 attached to the main shaft 35 rotates integrally, and moves the seal ring 41 to the distal end side. The rotation of the main shaft 35 also rotates the idle shaft 47 via the seal ring 41, and the rotation of the coil spring 55 moves the seal ring 41 to the distal end side.

At this time, since the idle shaft 47 is driven to rotate with respect to the driving rotation of the main shaft 35, the seal ring 41 tends to be ahead of the main shaft 35 side and delayed by the idle shaft 47 side. Individual seal ring 41 from ring 41
It moves to the tip side while being solved.

In the unraveling area A, the seal ring 41 which has been unraveled one by one and moved to the distal end side rides on the coil spring 43 in the separated state B in a close contact state, and is aligned. Transferred to the side. In the separation area B, there is also a seal ring 41a that protrudes and overlaps the aligned seal rings 41 until the separation rollers 59 are reached, and thus the seal rings 41 may not be completely aligned one by one.

The seal ring 4 moving in the separation area B
When 1 reaches the inclined surface 71 of the roller small-diameter portion 69 of the separation roller 59, the rotation of the roller small-diameter portion 69 causes the contact portion of the inclined surface 71 with the seal ring 41 to swing left and right in the figure. As a result, the seal ring 41a protruding upward is pushed rightward and is separated from the lower seal ring 41 on which the seal ring 41a overlaps.

The inclined surface 71 has an angle θ of 110 degrees or less as shown in FIG. FIG. 3 shows that the angle θ is 110
Degrees, and in this case, the slope 71
Is more nearly horizontal, so that a plurality of overlapping seal rings 41 enter simultaneously below the roller small-diameter portion 69 along the inclined surface 71, causing the separation roller 59 to float, which is not preferable.

The seal ring 41 having passed through the inclined surface 71
Are moved under the roller small-diameter portion 69 in a state where they are aligned one by one, and reach the pentagonal portion 67. In the pentagonal portion 67, the apex 67a is formed by one seal ring 4
1 is pressed downward to separate it from the subsequent seal ring 41 to separate it and drop it between the pitches of the coil springs 43 in the re-contact prevention area C. Since the pentagonal portion 67 has five vertexes 67a, the adjacent seal rings 41 can be reliably and continuously separated.

The pentagonal portion 6 is not necessarily required as the small diameter portion.
It is not necessary to set the seal ring 41 to a square or a hexagon as long as the seal ring 41 can be separated at each vertex.

Here, the angle α between the outer peripheral surface of the roller main body 65 and the end face of the roller main body 65 on the pentagonal portion 67 side.
Is set to 90 degrees, so that the seal ring 41
The roller body 6
5 would fall under.

The angle α may be 80 degrees or more and 110 degrees or less. When the angle α is an acute angle of less than 80 degrees as shown in FIG. 4, the seal ring 41 is easily damaged, and the angle α becomes an obtuse angle exceeding 110 degrees as shown in FIG. In this case, the end face of the small diameter portion is formed as a tapered surface, so that the subsequent seal ring 4
1 is a seal ring 41 preceding the roller body 65
The problem of getting in with the error occurs.

The seal ring 4 which has reached the re-contact prevention area C
1 moves sequentially to the distal end side while being inserted one by one between the pitches of the coil springs 43, and the main shaft 35
And falls along the fin-shaped guide 57.

As described above, the seal ring 4 that first protrudes upward on the inclined surface 71 of the separation roller 59.
1 to perform a first separating action of pressing rightward to separate,
Subsequently, the vertexes 67a of the pentagonal portion 67 perform a second separating action of peeling off the close contact with the adjacent seal ring 41,
Further, at the boundary between the roller main body 65 and the pentagonal portion 67, a third separating operation is performed in which the seal ring 41 is securely inserted under the roller main body 65 one by one without damaging the seal ring 41. Even if high-viscosity oil is applied to the seal ring 41 in order to prevent breakage such as breakage of the seal ring 41, the seal rings 41 can be reliably separated and supplied one by one.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a seal ring separating device according to an embodiment of the present invention.

FIG. 2 is a view as viewed from an arrow D in FIG.

FIG. 3 is an operation explanatory diagram in the case where the angle θ of the inclined surface of the separation roller is set to exceed 110 degrees.

FIG. 4 is an explanatory diagram in a case where an angle α between an outer periphery of a roller body and an end surface of the roller body on the side of a pentagon is set to less than 80 degrees.

FIG. 5 is an explanatory diagram in a case where an angle α between an outer periphery of a roller body and an end face of the roller body on a pentagonal portion side exceeds 110 degrees.

FIG. 6 is a cross-sectional view showing a seal ring separation device according to a conventional method of dropping and cutting and supplying by a magazine.

FIG. 7 is a cross-sectional view showing a seal ring separating device according to another conventional example, in which a uniaxial ball screw is rotated by a motor and a seal ring is supplied along a screw groove.

FIG. 8 is an explanatory view showing a conventional example of a configuration in which a large number of seal rings set on a main shaft provided with a coil spring and an idle shaft are separated by separation rollers.

[Explanation of symbols]

 35 Main shaft 41 Seal ring 43 Coil spring (spiral part) 47 Idle shaft 55 Coil spring (spiral part) 59 Separation roller 65 Roller body part 67 Pentagram part (small diameter part) 67a Vertex (corner part) 71 Slope

Continued on the front page F term (reference) 3C030 AA03 AA11 AA15 BB13 3J059 AE05 BA06 GA50 3J103 AA02 AA63 AA75 CA02 FA30 GA32

Claims (9)

[Claims] 1. A main shaft for sequentially moving a large number of set seal rings along a helical portion provided therearound by rotation, and a tension applied to the large number of seal rings bridged between the main shaft. And an idle shaft arranged at a predetermined interval so that the seal ring is provided. The idle shaft is rotatable in synchronization with the main shaft. In a seal ring separating device provided with a separating roller for separating the individual seal rings, an outer peripheral portion of one moving seal ring is disposed on an outer peripheral portion of an end portion on a side where the seal ring of the separating roller is set. A sealing ring separating device provided with a corner portion for pressing the seal ring to separate the seal ring from an adjacent subsequent seal ring. 2. The seal ring separating device according to claim 1, wherein a plurality of corners are provided along a circumferential direction. 3. The seal ring separating apparatus according to claim 2, wherein the plurality of corners are formed by forming a polygonal portion on an end face of the separation roller. 4. A small-diameter portion having a small diameter with respect to the roller main body portion is provided at an end of the separation roller on which the seal ring is set, and a corner portion is provided on an outer periphery of the small-diameter portion. And at the boundary between the roller body and
The seal ring according to any one of claims 1 to 3, wherein an angle between an outer peripheral portion of the roller main body and an end surface of the roller main body on the side of the small diameter portion is set to 80 degrees or more and 110 degrees or less. Separation device. 5. A main shaft for sequentially moving a number of set seal rings along a helical portion provided therearound by rotation, and tension is applied to the plurality of seal rings bridged between the main shaft. An idle shaft arranged at a predetermined interval so as to be provided, and a separation roller rotatable in synchronization with the main shaft and for separating the seal rings one by one on the front side in the moving direction of the seal ring. Wherein the end surface of the separation roller on which the seal ring is set is an inclined surface inclined with respect to a plane perpendicular to the center axis of the separation roller. Separation device. 6. The inclined surface is a rotational position where the axial length of the outer peripheral surface of the separation roller is minimum on the main shaft side, and an angle between the inclined surface and the minimum outer peripheral surface is 110 degrees or less. The seal ring separating device according to claim 5, wherein 7. The seal ring separating device according to claim 1, wherein a spiral portion is provided on the idle shaft. 8. The seal ring separating device according to claim 1, wherein the spiral portion is formed by a coil spring. 9. A large number of seal rings are set in a tensioned state on a main shaft and an idle shaft arranged at a predetermined distance from each other, and are rotated around the outer periphery of the main shaft by rotation of the main shaft. The seal ring is moved along the spiral portion provided, and on the front side in the moving direction, a separation roller that rotates in synchronization with the main shaft separates the seal rings one by one. When the seal ring reaches the inclined surface of the end face of the separation roller, the inclined surface overlaps the other seal ring and swings the protruding seal ring back and forth in the moving direction to perform a first separating operation. When the ring reaches the corner provided on the outer periphery of the separation roller, this corner is moved by one of the sealers at the forefront part to be moved. The outer periphery of the ring is pressed toward the center to perform the second separating action, and furthermore, the seal ring reaches the boundary between the roller body and the corner having a larger diameter than the corner, so that this boundary is A method of separating a seal ring, wherein a third separation operation is performed in which one seal ring is inserted between the roller body and the main shaft.