JP4021379B2 - Ring holding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ring holding device for holding a ring when a predetermined processing is performed on a thin cylindrical ring.
[0002]
[Prior art]
For example, in a power transmission belt employed in a continuously variable transmission, a belt in which a plurality of elements arranged in a ring shape are bundled by a laminated ring formed by laminating a plurality of metal rings is used. A metal ring constituting this type of laminated ring is formed in an endless belt shape by cutting a cylindrical metal drum into a predetermined width with a thin disc-shaped grindstone. And since the metal ring cut | disconnected from the cylindrical drum has the burr | flash in the side edge, it is necessary to grind | polish the burr | flash. Further, even if the occurrence of burrs at the side edge of the metal ring is small, it is necessary to polish the side edge of the metal ring and finish the side edge to a highly accurate curved shape.
[0003]
As a method of polishing the side edge of the metal ring, barrel polishing is known as seen in, for example, Patent Document 1 below. However, in barrel polishing, a plurality of metal rings are agitated in the barrel together with the media to bring the media into contact with the side edges of the metal rings. There was an inconvenience that occurred. Further, since a larger amount of media contacts the outer peripheral surface side than the inside of the metal ring, there is a disadvantage that the polishing of the inner corner portion and the outer corner portion of the side edge of the metal ring is not uniform.
[0004]
In view of this, it is conceivable to hold a plurality of metal rings on a holding table or the like at intervals, and polish a plurality of metal rings at a time by bringing a polishing brush into contact with each metal ring. By doing so, it is possible to polish a plurality of metal rings without bringing them into contact with each other, and the metal brush is made to contact the inner and outer corners of the side edge of the metal ring uniformly. It is possible to improve the polishing accuracy of the side edge.
[0005]
By the way, when the metal ring is polished by the polishing brush, it is necessary to accurately contact the polishing brush with the polishing position of the metal ring. For this reason, in the said holding table etc., what hold | maintained a metal ring accurately and firmly was desired.
[0006]
Conventionally, as can be seen in Patent Document 2 below, there is known a technique in which a metal ring is stretched and held between a pair of holding rolls. According to this, the metal ring is held by separating one holding roll from the other holding roll by the cylinder.
[0007]
However, in the configuration shown in Patent Document 2 below, there is a disadvantage that the holding roll is likely to be displaced when the holding roll is moved by the cylinder, and a highly accurate holding state cannot be expected. In addition, since the cylinder for moving the holding roll extends in the radial direction of the holding roll, for example, when three or more holding rolls are provided and a metal ring is passed over, it is difficult to configure the apparatus compactly. Furthermore, when a plurality of metal rings are held adjacent to each other, the apparatus configuration may become large.
[0008]
[Patent Document 1]
JP 2001-241512 A (page 4 0032)
[Patent Document 2]
JP 2002-248522 A (FIG. 1)
[0009]
[Problems to be solved by the invention]
An object of the present invention is to provide a compact ring holding device that can quickly and accurately hold the ring and eliminate such inconvenience.
[0010]
[Means for Solving the Problems]
To achieve the above object, the holding device of the ring of the present invention, a circular shape in plan view of the mounting table for placing a thin cylindrical ring, is formed on the mounting table from the placing location stand axial side A plurality of rails extending radially, a plurality of abutting members provided slidably along each rail, and abutting on the inner surface of the ring mounted on the mounting table, and each rail along each rail and a contact member driving means for the contact member is slid performing the separating and contacting to the inner surface of the ring of the contact member, the contact member driving means, the placing stand of the axis A movable member that is movable in the vertical direction along the axis, and the movable member and each abutting member are connected to each other so that when the movable member moves upward, the abutting member abuts on the inner surface of the ring and moves. Link means for moving each abutting member away from the inner surface of the ring when the member moves downward, and the moving member And a biasing means that causes each abutting member to abut against the inner peripheral surface of the ring via the link means by the biasing force, and the moving member is moved downward against the biasing force of the biasing means. Holding release means for moving each contact member away from the inner peripheral surface of the ring via the link means, and a plurality of the mounting tables are arranged on the same circumference, the holding release means A movable member provided at the center position of the array circumference of each mounting table so as to be movable in the vertical direction, and a connecting member for connecting the other moving member to the moving member of each mounting table, The moving member of each mounting table is simultaneously moved downward by the downward movement of another moving member, and each contact member of each mounting table is simultaneously separated from the inner peripheral surface of the ring .
[0011]
According to the present invention, the mounting table is provided with a plurality of rails, and the plurality of abutting members that slide along the rails abut against the inner surface of the ring, so that the ring can be held with high accuracy. In the present invention, since the abutting member driving means is provided, the moving member is urged upward by the urging means, and each abutting member abuts against the inner peripheral surface of the ring via the link means. Since they are in contact with each other, a highly accurate holding state of the ring can be reliably maintained.
[0012]
When the ring held by the mounting table is removed from the mounting table, the moving member is moved downward by the holding release means. Thereby, the contact member is slid inward of the ring by the link means. In this way, the contact members can be separated from the inner surface of the ring all at once by simply moving the moving member downward, and the holding of the ring can be released very quickly. Moreover, since the sliding of each contact member can be driven simply by providing the link means between the moving member and each contact member, the structure is simple and the apparatus is made compact. Can do. Similarly, when the ring is held on an unmounted mounting table, the moving members are moved downward by the holding release means, so that the contacting members can be brought close to each other. After placing the ring on the outside, the ring can be held very quickly by applying a biasing force by the biasing means to the moving member.
[0014]
Furthermore, in the present invention, when the other moving member and the connecting member are provided in the holding release means, when the other moving member is moved downward, the holding member is moved through the connecting member. Since the moving member moves downward at the same time, even if a plurality of mounting tables are provided, it is possible to simultaneously hold and release the rings on each mounting table, and quickly and efficiently perform the holding operation on the plurality of rings. Can do.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view schematically showing a ring polishing apparatus employing the holding device of the present invention, FIG. 2 is an explanatory plan view showing the main part of the input means, and FIG. 3 is an explanatory view showing the operation of the input means, FIG. 4 is an explanatory plan view of a holding table as a holding device of the present invention, FIG. 5 is an explanatory vertical sectional view of the holding table, and FIG. 6 is an explanatory view showing the operation of the holding means of the holding table.
[0016]
As shown in FIG. 1, the polishing apparatus 1 according to the present embodiment includes a turntable 2 that conveys a thin cylindrical metal ring W. The turntable 2 includes a plurality of holding tables 4 (eight holding tables 4 in the present embodiment) which are intermittently rotated around the support column 3 and have a predetermined interval at the periphery thereof, which is the holding device of the present invention. ing. The holding table 4 holds a plurality of metal rings W (six metal rings W in this embodiment) arranged on the same circumference.
[0017]
The turntable 2 stops the metal ring W on the holding table 4 for each of eight stages A to H for a predetermined time and then rotates by a predetermined angle to carry the metal ring W between the stages A to H. The stage A located at the most upstream in the rotation direction of the turntable 2 is a loading / dispensing stage. The loading / dispensing stage A is provided with a loading means 5, and a dispensing means adjacent to the loading means 5. 6 is provided. A stage B adjacent to the downstream side of the charging / dispensing stage A is a first rough polishing stage. The first rough polishing stage B is provided with a first rough polishing means 7. The stage C adjacent to the downstream side of the first rough polishing stage B is a first intermediate polishing stage, and the first intermediate rough polishing stage C is provided with a first intermediate polishing means 8. Yes. The stage D adjacent to the downstream of the first intermediate polishing stage C is a first finish polishing stage, and the first finish rough polishing stage D is provided with a first finish polishing means 9. Yes. Although not shown in detail, the first rough polishing means 7, the first intermediate polishing means 8, and the first finish polishing means 9 are each provided with a polishing brush 60, and one end edge of the metal ring W is provided. Grind.
[0018]
The stage E adjacent to the downstream of the first finish polishing stage D is a reversing stage, and the reversing stage E is provided with reversing means 10 for reversing the metal ring W. Further, a stage F adjacent to the downstream of the reversing stage E is a second rough polishing stage, and the second rough polishing stage F is provided with a second rough polishing means 11. The stage G adjacent to the downstream side of the second rough polishing stage F is a second intermediate polishing stage, and the second intermediate rough polishing stage G is provided with a second intermediate polishing means 12. Yes. The stage H adjacent to the downstream side of the second intermediate polishing stage G is a second finish polishing stage, and the second finish polishing stage H is provided with a second finish polishing means 13. . Although not shown in detail, the second rough polishing means 11, the second intermediate polishing means 12, and the second finish polishing means 13 are each provided with a polishing brush 60, and the other edge of the metal ring W is used as the other edge. Grind.
[0019]
In the polishing apparatus 1 configured as described above, first, the metal ring W is sequentially input to the input / output stage A of the turntable 2 by the input means 5. Next, one end edge of the metal ring W is polished while the metal ring W is conveyed along the stages B to D by the rotation of the turntable 2. Next, the metal ring W is reversed in the reversing stage E, and the other edge of the metal ring W is polished while the metal ring W is conveyed along the stages F to H by the rotation of the turntable 2. Then, the metal rings whose both edges are polished are transferred from the turntable 2 to the delivery conveyor 72 and delivered by the delivery means 6 at the W input / discharge stage A. In FIG. 1, reference numerals 71 and 79 denote nozzles for cleaning the holding table 5 when the metal ring W is not held (when the metal ring W is reversed and immediately after being dispensed).
[0020]
As shown in FIG. 1, the charging means 5 holds the metal ring W of the charging / conveying conveyor 14 and the charging / discharging stage A while holding the metal ring W of the charging / transporting conveyor 14. It is comprised by the loading transfer means 15 which transfers the metal ring W to the holding table 4 located. The loading transfer means 15 includes a loading holding member 16 that holds a plurality of metal rings W in a state corresponding to the holding position of the metal ring W of the holding table 4, and the loading holding member 16 from the loading conveyance conveyor 14. The transfer arm 17 is moved to the holding table 4 positioned on the loading / dispensing stage A, and the arm driving means 18 is configured to drive the horizontal swing and the vertical swing of the transfer arm 17. Yes. Although not shown in the drawings, the transfer arm 17 has a configuration in which the loading holding member 16 is always maintained in a horizontal state even when the horizontal swing and the vertical swing are performed.
[0021]
As shown in FIG. 2, the charging holding member 16 includes a plurality of holding holes 19 formed at predetermined intervals on the same circumference. Each holding hole 19 is provided at six locations in this embodiment corresponding to the holding position of the metal ring W in the holding table 4. Further, the inner diameter of each holding hole 19 is formed larger than the outer diameter of the metal ring W. In addition, the holding member 16 includes a plurality of cylinders 20 corresponding to the holding holes 19, and piston rods 21 that are expanded and contracted by the cylinders 20 protrude inward of the holding holes 19. The metal rings W accommodated in the holding holes 19 are held in the holding holes 19 by being pressed against the inner peripheral walls of the holding holes 19 by the extension of the piston rods 21. The holding member 16 includes a rotation motor 22 that is rotatably connected to the tip of the transfer arm 17 and rotates intermittently at a predetermined angle.
[0022]
On the other hand, as shown in FIG. 2, an elevating table 23 is continuously provided at the end of the input and transport conveyor 14. The elevating table 23 holds a pair of metal rings W which are arranged in two rows by the aligning portion 24 provided at the terminal end of the input transport conveyor 14 and are transported to the terminal end of the input transport conveyor 14 and are not shown in the figure. Lifted by means. The lifting table 23 includes a holding convex portion 25 having a diameter smaller than the inner diameter of the metal ring W and a sensor 26 that detects the metal ring W held by the holding convex portion 25, and the metal ring W is detected by the sensor 26. When this is done, the lifting table 23 is raised by the lifting means. Further, as shown in FIG. 3A, a stopper 27 protruding from the bottom of the charging / conveying conveyor 14 is provided at the end of the charging / transporting conveyor 14. The stopper 27 engages the metal ring W located at the end of the loading and conveying conveyor 14 when the sensor 26 detects the metal ring W, and stops the advance of the metal ring W.
[0023]
Next, the configuration of the holding table 4 that is the holding device of the present invention will be described in detail. As shown in FIG. 4, the holding table 4 includes a plurality of (six) holding means 28 arranged at predetermined intervals on the same circumference corresponding to the holding positions of the metal rings W. ing. The holding means 28 is configured to be rotatable while holding the metal ring W from the inside. That is, as shown in FIG. 5, the holding means 28 includes a cylindrical rotary shaft 31 that is rotatably supported by a frame 29 of the holding table 4 fixed to the turntable 2 via a plurality of bearings 30; A turntable 32 is provided on the top of the rotary shaft 31 and on which a metal ring W is placed. The turntable 32 constitutes the mounting table of the present invention.
[0024]
The rotating shaft 31 includes a driven gear 33 at its lower end, and the driven gear 33 is rotated by a drive motor 36 via an intermediate gear 34 and a drive gear 35. The drive motor 36 is provided for each of the polishing stages B, C, D, F, G, and H described above, and is not provided for the loading / dispensing stage A and the reversing stage E.
[0025]
In addition, a plurality of swinging members 38 that are swingably supported via a support shaft 37 are radially arranged on the turntable 32. The swing member 38 includes a first extending portion 39 that extends in the radial direction of the turntable 32, a first extending portion 39 that is integrally connected to the first extending portion 39, is bent via a support shaft 37, and extends upward. 2 extending portion 40. A contact member 42 is connected to the upper end of the second extending portion 40 via a connecting portion 41 (see FIG. 6). Each contact member 42 is slidably provided radially along each of a plurality of rails 32 a (see FIG. 6) formed on the turntable 32, and outwardly of the turntable 32 by swinging of the swinging member 38. And the outer surface thereof comes into contact with the inner peripheral surface of the metal ring W. The swing member 38 constitutes the link means of the present invention.
[0026]
Further, a first sliding shaft 43 that is a movable member that is slidable in the vertical direction along the axis is inserted and held in the rotating shaft 31 and the rotating table 32. The first sliding shaft 43 is urged upward by a spring 44 as urging means. At the upper end of the first sliding shaft 43, a clamping portion 45 that clamps the end portion of the first extending portion 39 of the swing member 38 is provided. A second sliding shaft 47 urged upward by a spring 46 is held at the center of each holding means 28. The second sliding shaft 47 is connected to the lower end portion of each first sliding shaft 43 via a connecting member 48 provided at the lower end portion thereof. The second sliding shaft 47 constitutes the holding release means of the present invention.
[0027]
When the metal ring W is inserted into the holding table 4 of the turntable 2 by the input means 5, first, the input holding member 16 is positioned directly above the lifting table 23 as shown in FIG. At this time, as shown in FIG. 2, the pair of holding convex portions 25 of the elevating table 23 and any pair of holding holes 19 adjacent to each other of the holding holes 19 of the holding member 16 are made to face each other. Next, when the metal ring W is held by the pair of holding projections 25, the lifting table 23 is raised by the detection of the sensor 26, and the metal ring W of the pair of holding projections 25 as shown in FIG. Is accommodated in the pair of holding holes 19 of the holding member 16. At this time, as shown in FIG. 2, the cylinder 20 of both the holding holes 19 is operated so that the piston rod 21 comes into contact with the metal ring W and the metal ring W is held in the both holding holes 19. 23 is lowered. After that, the holding member 16 is rotated by a predetermined angle by the rotation motor 22, and the pair of metal rings W is delivered by the raising and lowering of the lifting table 23 shown in FIGS. 3 (a) and 3 (b). . Similarly, the pair of metal rings W are delivered by rotating the holding member 16 and raising and lowering the lifting table 23, whereby the metal rings W are held in all the holding holes 19 of the holding member 16. Is done.
[0028]
Thereafter, referring to FIG. 1, the transfer arm 17 swings horizontally toward the holding table 4 positioned at the loading / dispensing stage A, and the transfer arm 17 swings downward. Thus, the metal ring W is transferred from the holding member 16 to the holding table 4.
[0029]
Subsequently, in each holding means 28, as indicated by a phantom line in FIG. 5, when the pressing protrusion 49 provided at the center of the holding member 16 presses the second sliding shaft 47, the second sliding The shaft 47 slides downward. As a result, each first sliding shaft 43 slides downward via the connecting member 48. At this time, as shown in FIG. 6A, the clamping portion 45 is lowered to push down the first extending portion 39 of each swing member 38. As a result, the abutting member 42 slides toward the center of the turntable 32 by the swinging of the second extending portion 40 of each swinging member 38. In this state, when the metal ring W held in each holding hole 19 of the holding member 16 is placed on the turntable 32, each contact member 42 enters the inside of the metal ring W. Next, referring to FIG. 5, when the holding of the metal ring W by each holding hole 19 of the holding member 16 is released and the holding member 16 is raised, the pressing protrusion 49 presses the second sliding shaft 47. Is released. Along with this, the second sliding shaft 47 is slid upward by the bias of the spring 46, and the first sliding shaft 43 is released from being pushed down. Then, as shown in FIG. 6B, the first sliding shaft 43 pushes up the clamping portion 45 by the bias of the spring 44, so that each swinging member 38 swings, and each contact member 42 becomes a rail. It slides along 32a and contacts the inner side of the metal ring W.
[0030]
As described above, according to the present embodiment, the plurality of metal rings W can be quickly held by the contact members 42 in conjunction with the lowering and raising of the holding member 16. In addition, since each contact member 42 slides along the rail 32a, the contact member 42 can contact the metal ring W with high accuracy and reliably maintain the holding state. Furthermore, since the vertical movement of the first sliding shaft 43 is transmitted to each contact member 42 by the swing member 38, each holding means 28 can be formed compactly.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram schematically showing an embodiment of the present invention.
FIG. 2 is an explanatory plan view showing a loading holding member of the loading means.
FIG. 3 is an explanatory view showing the operation of the input means.
FIG. 4 is an explanatory plan view of a holding table.
FIG. 5 is an explanatory longitudinal sectional view of a holding table.
FIG. 6 is an explanatory view showing the operation of the holding means of the holding table.
[Explanation of symbols]
W ... Metal ring (ring), 4 ... Holding table (holding device), 32 ... Rotating table (mounting table), 32a ... Rail, 38 ... Swing member (link means), 42 ... Contact member, 43 ... First Slide shaft (moving member), 44 ... spring (biasing means), 47 ... second sliding shaft (other moving member), 48 ... connecting member.

Claims (1)

A circular shape in plan view of the mounting table for placing a thin cylindrical ring, is formed on the mounting table, a plurality of rails extending radially from the placing location table of the axis side, slidably along the rails A plurality of abutting members provided and capable of abutting on the inner surface of the ring mounted on the mounting table; and the inner surface of the ring of each abutting member by sliding each abutting member along each rail Contact member drive means for performing contact and separation with
The abutting member drive means, a moving member movable in the vertical direction along the placing stand axis, when connects the said moving member and the contact member is the movable member is moved upward Each abutting member is abutted against the inner side surface of the ring, and when the moving member moves downward, a link means for moving the abutting member away from the inner side surface of the ring, and the moving member is urged upward. The urging means that causes each abutting member to abut against the inner peripheral surface of the ring through the link means by the urging force, the moving member is moved downward against the urging force of the urging means, and the link means is Holding release means for separating each contact member from the inner peripheral surface of the ring via ,
A plurality of the mounting tables described above are arranged on the same circumference,
The holding release means includes another moving member provided at the central position of the array circumference of each mounting table so as to be movable in the vertical direction, and a connecting member that connects the other moving member to the moving member of each mounting table. And simultaneously moving the moving members of the mounting tables downward by moving the other moving members downward to simultaneously separate the contact members of the mounting tables from the inner peripheral surface of the ring. A ring holding device characterized.

Images