JP5706367B2 - Work supply device - Google Patents

Description

  The present invention relates to a workpiece supply device, and more particularly, to a workpiece supply device used in a centerless processing apparatus.

  Conventionally, as a workpiece automatic supply device of a centerless polishing machine that processes a columnar or cylindrical workpiece, there is one described in Patent Document 1. According to this, a supply path for supplying a work toward the centerless sander is provided, a supply path for supplying the work to the supply path is provided on the side of the supply path, and a workpiece standby section is provided at the end of the input path. A detection mechanism for detecting whether or not a workpiece is present in the standby section, a stop mechanism for the workpiece is provided between the standby section and the supply path, and the stop mechanism is connected to the supply path. The fluid cylinder for pushing the workpiece is provided in the vicinity of the supply path, and the rear end of the workpiece put into the supply path can be pressed by the rod of the fluid cylinder.

  When the detection mechanism detects that the workpiece is present in the standby portion when the tip of the rod of the fluid cylinder is at the first forward position where the workpiece put into the supply path is advanced by the length of the workpiece, When the rod is controlled to retract to the start position and the tip of the rod of the fluid cylinder is in the first forward position, the rod of the fluid cylinder further moves when the detection mechanism detects that no workpiece is present in the standby portion. It was configured to be controlled to move forward.

JP 03-55153 A

  The workpiece automatic feeding device of the centerless sander described above is controlled by detecting whether or not there is a workpiece in the standby section with the detection mechanism on the side of the standby section. Since the workpiece is dropped from the chute to the supply path, the posture of the workpiece is easily broken, and when the workpiece is pushed in by the fluid cylinder in a state where the posture of the workpiece is broken, the workpiece is easily clogged.

  However, in the conventional automatic workpiece feeder of the centerless sander, a countermeasure mechanism that copes with the occurrence of workpiece clogging or workpiece clogging in the centerless sander or supply path downstream from the standby section. There is no provision. For this reason, there is a possibility that the movement of the rod of the fluid cylinder cannot be controlled, and the workpiece may continue to be fed. In this case, many defective products are produced.

  The present invention solves the above-described problems, and stably supplies a workpiece to a centerless processing apparatus to suppress the clogging of the workpiece, thereby preventing the occurrence of defective products even if the workpiece is clogged. An object of the present invention is to provide a workpiece supply device that can perform the above-described operation.

  According to the first aspect of the present invention, there is provided a supply path for supplying a workpiece between the grinding wheel and the adjustment wheel of the centerless processing apparatus, and a chute for supplying the workpiece to the supply path, and the workpiece is provided between the grinding wheel and the adjustment wheel. A feed passage for feeding a workpiece in a state in which the chute is connected to the supply path, and the workpieces in a state in which the direction along the supply direction of the workpiece in the supply path is aligned in the axial direction; A first standby unit in which a workpiece positioned at the head of the feed order stands by and is connected to the first standby unit, and a second standby unit disposed at a position along the supply direction of the workpiece on the supply path with respect to the first standby unit; The supply path includes a third standby portion formed below the second standby portion, and pushes out one workpiece sent from the feed passage to the first standby portion to the second standby portion at a predetermined timing. Feed mechanism and one workpiece sent to the second standby section (3) A feed door opening / closing mechanism that opens and closes the feed door at a predetermined timing and adjusts one workpiece sent to the third standby portion with the grinding wheel at a predetermined timing. A rod that is horizontally moved in the axial direction so as to be pushed out between the cars, and a pusher mechanism that moves the rocking bar in the direction of the rod axis by rocking the disk by rotating the disk. Is provided with a friction clutch, and when an excessive load is applied during the push-out operation of the rod, the swing bar stops and the push-out of the rod stops.

  According to this, the work in a state in which the direction along the supply direction of the work in the supply path is set as the axial direction is moved from the first standby portion to the second work position in the supply direction of the work in the supply path by the feed mechanism. By separating and feeding one by one to the standby unit, it is possible to prevent a plurality of workpieces from being fed from the feed passage and interfere with each other, and the lower third standby unit from the upper second standby unit by the feed door opening / closing mechanism The workpiece is rolled and fed to prevent the posture of the workpiece from being lost, and the workpiece supplied to the third standby part is moved by the disk to cause the rocking bar to oscillate and the rod to move linearly. Compared to the above, the extrusion of the rod is smooth and gentle, and the workpiece is supplied between the grinding wheel and the adjustment wheel, so that the workpiece can be supplied stably to the centerless processing machine and clogging of the workpiece can be suppressed. Can .

  In addition, the friction clutch provided in the disk part interrupts the power transmission when an excessive load is applied during the push-out operation of the rod, and the rocking bar stops and the push-out of the rod stops. Even if this occurs, it is possible to prevent the generation of defective products.

  Further, the push-out mechanism includes the swing bar pivotally supported on the main body portion on which the push-out mechanism is disposed, with the direction along the rotation axis of the disk portion as the rotation axis, and from the disk portion to the rotation axis direction of the disk portion. A pressing portion that protrudes along and is formed so as to be able to press the swinging bar, the rod that is pressed by the swinging bar that is pressed by the pressing portion and pushes the workpiece, and a cylinder that linearly moves the rod inside It is desirable to have a configuration including a rod-shaped rod sliding portion and a second urging member that urges the rod to the side opposite to the pushing direction of the rod.

  With such a configuration, it is possible to adjust the extrusion speed of the workpiece by adjusting the rotation speed of the drive device that rotates the disc part according to the state of the outer peripheral surface of the workpiece and the wear state of the grinding wheel Thus, the dimensional accuracy of the workpiece can be improved.

It is a front view which shows the workpiece supply apparatus of one Embodiment of this invention. It is a side view which shows the workpiece supply apparatus of one Embodiment of this invention. It is a top view which shows the workpiece | work supply apparatus of one Embodiment of this invention. It is a front view which shows the operation state which sends a workpiece | work from a 1st standby part to a 2nd standby part. It is a top view in the state of FIG. It is a front view which shows the operation state which sends a workpiece | work from a 2nd standby part to a 3rd standby part. It is a top view in the state of FIG. It is a front view which shows the operation state which sends a workpiece | work from a 3rd standby part to a centerless processing apparatus. It is a top view in the state of FIG. It is the figure which showed the timing diagram of an extrusion mechanism, and a timing chart.

  One embodiment of a work supply device of the present invention is described based on a drawing. In the following description, the top and bottom in FIG. 1 is the up and down direction, the left and right in FIG. 1 is the left and right direction, the front direction in FIG.

  As shown in FIGS. 1 to 3, the workpiece supply device 10 includes a supply path 20, a chute 30 that supplies the workpiece W to the supply path 20, and a main body portion 40, and is columnar or cylindrical from the supply path 20. The workpiece W is fed out, and the workpiece W is supplied between the grinding wheel 101 and the adjustment wheel 102 of the centerless processing apparatus 100.

  The supply path 20 is made of metal, has a substantially V-shaped cross section when viewed from the left-right direction, and is disposed along the left-right direction through a side plate portion 43 described later. An inner surface of the supply path 20 is formed as a third standby unit 21 on which a work W sent from a second standby unit 33 described later waits. A magnet (not shown) that allows the work W to be attracted to the third standby portion 21 is disposed at a portion corresponding to the third standby portion 21 on the outer surface of the supply path 20.

  The chute 30 extends rearward of the supply path 20 in a plan view, and is inclined and arranged so that the front side is lower and the rear side is higher than the supply path 20 in a side view. The chute 30 is connected to the feed passage 31 and the feed passage 31 through which the workpieces W arranged adjacent to each other with the left-right direction (corresponding to the supply direction of the workpiece of the supply passage in the claims) as an axis. A first standby part 32 on which the workpiece W positioned at the head of the feed order waits, and a second standby part 33 disposed at a left position along the left-right direction, The first standby part 32 and the second standby part 33 are formed in connection with the supply path 20. In the vicinity of the first standby portion 32, a stop plate 34 that extends upward in a rectangular flat plate shape and receives the workpiece W is disposed along the left-right direction.

  The main body 40 includes a rectangular plate-shaped base plate portion 41, a rectangular plate-shaped vertical plate portion 42 that extends upward near the center of the base plate portion 41 in a side view, and a left side of the base plate portion 41. It has a rectangular flat plate side plate portion 43 that extends upward from the end portion and is connected to the left end portion of the vertical plate portion 42.

  In the main body 40, an extrusion mechanism 50, a feed mechanism 72, and a feed door opening / closing mechanism 81 are disposed.

  The pushing mechanism 50 includes a driving device 51, a friction clutch 54, a swing bar 64, a pressing portion 66, a rod sliding portion 67, a rod 68, and a second urging member 69. Yes.

  The drive device 51 uses a motor 52 with a speed reducer and is disposed on the rear surface side of the vertical plate portion 42, and a drive shaft 53 extending forward from the motor 52 passes through the vertical plate portion 42. The drive shaft 53 is formed so as to be capable of screwing with a front nut 62 and a rear nut 63 described later.

  The friction clutch 54 is configured by a cone-type friction clutch mechanism including a drive disk 55, a driven disk 56, a disk part 57, a first urging member 59, and a double nut part 61. .

  The drive disk 55 is fitted on the outer side of the drive shaft 53 using a male cone, is disposed on the front side of the motor 52 (rear side) from the vertical plate portion 42, and rotates according to the rotation of the drive shaft 53. It is fixed to the drive shaft 53.

  The driven disk 56 is formed so as to be slidable with respect to the drive shaft 53 on the outside of the drive shaft 53 by using a female cone, and is configured to be rotatable with respect to the drive shaft 53. It is arranged on the side (front side).

  The disk part 57 includes a spring receiver 58a, a disk 58b, and a nut receiver 58c.

  The spring receiver 58 a is made of metal and formed in a cylindrical shape, is fitted on the outer side of the drive shaft 53, is formed to be rotatable with respect to the drive shaft 53, and is disposed on the front side of the driven disk 56.

  The disk 58b is made of metal and is formed in a disk shape. The disk 58b has an insertion hole (not shown) penetrating in the front-rear direction at the center, is fitted on the outside of the drive shaft 53, and is rotatable with respect to the drive shaft 53.

  The nut receiver 58c is made of a metal and is formed in a cylindrical shape. The front end surface of the nut receiver 58c is formed so as to be in contact with a rear end surface of a rear nut 63, which will be described later. The drive shaft 53 is rotatable.

  The disk portion 57 is formed integrally with a spring receiver 58a, a disk 58b, and a nut receiver 58, which are stacked in the front-rear direction and screwed or the like.

  The first urging member 59 uses a compression coil spring 60 and is disposed between the driven disk 56 and the spring receiver 58a. The front end of the driven disk 56 and the front end of the driven disk 56 at the rear end. Thus, the rear surface of the spring receiver 58a is bonded to the driven disk 56 and the disk portion 57 by being bonded together by welding or the like.

  The double nut portion 61 includes a front nut 62 and a rear nut 63. The front nut 62 is formed in a cylindrical shape so as to be screwable with the drive shaft 53, and the rear nut 63 is formed in a cylindrical shape. The rear end surface is formed so as to be able to come into contact with the nut receiver 58c, and can be screwed into the drive shaft 53.

  The front nut 62 and the rear nut 63 are brought into contact with each other to be positioned and fixed, the movement of the disk portion 57 in the front-rear direction is restricted on the rear surface of the rear nut 63, and the driven disk 56 is moved by the compression coil spring 60. By energizing the drive disk 55 and energizing the disk part 57 toward the rear nut 63, the rotation of the drive shaft 53 of the motor 52 is transmitted to the disk part 57.

  The friction clutch 54 can adjust the urging force of the driven disk 56 to the drive disk 55 by moving the double nut portion 61 in the front-rear direction to expand and contract the compression coil spring 60.

  The swing bar 64 is cylindrical and is pivotally supported on the base plate 41 via the mounting member 65 with the front-rear direction (the direction along the rotation axis of the disk portion 57) as a rotation axis.

  The pressing portion 66 is formed in a columnar shape, and is disposed so as to protrude from the rear surface of the disk 58b along the front-rear direction (the rotation axis direction of the disk portion 57), and the swing bar 64 is moved along with the rotation of the disk 58b. It is formed on the left side so that it can be pressed.

  The rod sliding portion 67 is formed in a cylindrical shape so that the rod 68 can move in the left-right direction (corresponding to the horizontal direction in the claims) inside, and is attached to the front surface of the vertical plate portion 42 via an attachment member 92. In the front wall, a long hole 67a penetrating in the front-rear direction is formed along the left-right direction.

  The rod 68 is formed in a cylindrical shape and is accommodated in the rod sliding portion 67. The rod 68 has a cylindrical protrusion 68a that protrudes forward and passes through the long hole 67a. The protrusion 68a is provided with a receiving portion 68b that receives the pressure of the swing bar 64. The receiving portion 68b is formed in a bobbin shape having disks at both ends of the cylinder, is fitted on the outer side of the protrusion 68a, and is formed to be rotatable with respect to the protrusion 68a. The receiving portion 68b is formed so that the swing bar 64 can enter between the disks in plan view.

  The second urging member 69 uses a tension coil spring 70, and has a front end portion of a plate-like support member 71 that is arranged to protrude forward from the vertical plate portion 42, and a front end portion of the protrusion 68 a. The swing bar 64 is urged to the right side.

  As the disk 58b rotates, the pressing portion 66 moves on the circumference to press the swing bar 64, and the swing bar 64 pressed by the pressing portion 66 further presses the receiving portion 68b of the rod 68. Thus, the rotational motion of the pressing portion 66 is converted into the linear motion of the rod 68, and the workpiece W is pushed out. Thereby, the extrusion speed of the workpiece | work W can be adjusted by adjusting the rotational speed of the disk 58b, ie, the rotational speed of the motor 52. FIG.

  The feed mechanism 72 includes a limit switch 74, a first operating piece 76, and an air cylinder 78.

  The limit switch 74 is attached to the base plate portion 41 via the bracket 75 and is connected to a solenoid valve (not shown).

  The first working piece 76 is a plate formed in the shape of a circular arc band, and is attached to the rear surface of the disk 58b. In a state where the first operating piece 76 is attached to the disk 58b, the radially outer surface of the first operating piece 76 is formed to be concentric with the disk 58b when viewed from the front-rear direction, and the limit switch 74 is pushed downward. It is formed as a pressing surface 76a.

  The air cylinder 78 is connected to an air compressor (not shown) via a solenoid valve (not shown). An extruding member 80 that presses the workpiece W is attached to the left end of the drive rod 79 of the air cylinder 78.

  The air cylinder 78 pushes the drive rod 79 to the left side by switching the solenoid valve ventilation when the limit switch 74 is pushed down to the ON state, and pulls the drive rod 79 back to the right side by switching the solenoid valve ventilation. It is configured.

  The feed door opening / closing mechanism 81 includes a limit switch 83, a second operating piece 85, an air cylinder 87, and a feed door 90.

  The limit switch 83 is attached to the base plate portion 41 via the bracket 84 and is connected to a solenoid valve (not shown).

  The second working piece 85 is a plate formed in an arc belt shape, and is attached to the front surface of the disk 58b. In a state where the second operating piece 85 is attached to the disk 58b, the radially outer surface of the second operating piece 85 is formed to be concentric with the disk 58b when viewed from the front-rear direction, and the limit switch 83 is pushed downward. It is formed as a pressing surface 85a.

  The air cylinder 87 is connected to an air compressor (not shown) via a solenoid valve (not shown). A support member 89 is attached to the upper end of the drive rod 88 of the air cylinder 87, and the support member 89 is formed by twisting the flat plate in a side view so that the right side is a horizontal plane and the left side is a vertical plane. The rectangular flat plate-shaped feed door 90 is supported at the end of the.

  When the limit switch 83 is pushed down and turned on, the air cylinder 87 pulls back the drive rod 88 by switching the ventilation of the solenoid valve. When the limit switch 83 is turned off, the air cylinder 87 pushes up the drive rod 79 by switching the ventilation of the solenoid valve. It is configured as follows.

  The feed door 90 is a rectangular flat plate and is disposed so as to be able to contact the workpiece W along the left-right direction so that the axis of the workpiece W is not inclined with respect to the left-right direction (extrusion direction) of the rod 68 of the push-out mechanism 50. Is formed. The feed door 90 is disposed so as to separate the supply path 20 and the chute 30 through a slit 91 provided in the vicinity of the second standby portion 33 that is connected to the supply path 20, and is driven in the vertical direction by driving the air cylinder 87. It is formed to be movable along.

  The use mode and operation of the workpiece supply apparatus 10 having the above configuration will be described with reference to the timing chart of FIG. In the following description, it is assumed that the front end of the rotation direction (counterclockwise) of the pressing surface 76a of the first working piece 76 has a disk rotation angle of 0 ° with the position at the moment when the limit switch 74 is pressed as the original position. In FIG. 10, for the sake of explanation, the disk rotation angle, the time position, and the ratio are displayed with the operation portion highlighted.

  When the motor 52 is activated and the disk 58b rotates, as shown in FIG. 4, the pressing surface 76a of the first working piece 76 pushes the limit switch 74 downward.

  In the present embodiment, a line connecting the rotation center O of the disk 58b and the front end in the rotation direction of the pressing surface 76a of the first working piece 76, and the rotation direction of the rotation center O of the disk 58b and the pressing surface 76a of the first working piece 76. Since the angle formed by the line connecting the rear ends is about 72.5 °, as shown in FIG. 10, the limit switch 74 (L1) is between the disk rotation angle 0 ° and 72.5 °. While the ON state continues, the air cylinder 78 (S1) continues to be in the ON state by switching the ventilation of the solenoid valve, and the air cylinder 78 is in a state where the drive rod 79 is pushed to the left side.

  Therefore, as shown in FIG. 5, the feed mechanism 72 moves the drive rod 79 of the air cylinder 78 to the left side in the left-right direction (the push-out direction of the push-out mechanism 50), and the feed mechanism 72 is arranged in the state where the left-right direction is aligned as an axis. The workpieces W located at the top in the order are sent out one by one from the first standby unit 32 waiting to the second standby unit 33. In other words, the feed mechanism 72 feeds the workpiece W in a direction along the axis of the workpiece W.

  That is, the work W positioned at the head of the feed order by the feed mechanism 72 waits for the work W in a state in which the direction along the left-right direction (the feed direction of the work W in the supply path 20) is aligned in the feed passage 31. By separating and feeding one by one from the first standby part 32 to the second standby part 33 on the left side, a plurality of workpieces W are sent at a time from the feed path 31 and interfere with each other. Inclination of the axis line from the left-right direction is suppressed, and the workpiece W is sent out in a stable normal posture.

  When the disc rotation angle exceeds 72.5 °, the limit switch 74 (L1) continues to be OFF until the next rotation, and the drive rod 79 is pulled back to the right side by switching the ventilation of the solenoid valve, and the air cylinder 78 (S1) Continues off.

  When the disc rotation angle exceeds 90 °, as shown in FIG. 6, the pressing surface 85 a of the second working piece 85 pushes the limit switch 83 downward.

  In the present embodiment, a line connecting the rotation center O of the disk 58b and the front end in the rotation direction of the pressing surface 85a of the second working piece 85, and the rotation direction of the rotation center O of the disk 58b and the pressing surface 85a of the second working piece 85. Since the angle formed by the line connecting the rear ends is about 35 °, as shown in FIG. 10, the limit switch 83 (L2) remains in the ON state during the disk rotation angle of 90 ° to 125 °. At the same time, the air cylinder 87 (S2) continues to be in the ON state by switching the ventilation of the solenoid valve, and the air cylinder 87 is in a state in which the drive rod 88 is pulled back downward.

  Therefore, as shown in FIGS. 6 and 7, the feed door opening / closing mechanism 81 moves the drive rod 88 of the air cylinder 87 downward along the vertical direction, and accordingly, the feed door 90 is lowered downward. Thus, the workpiece W in a standby state that hits the feed door 90 rolls gently from the second standby portion 33 toward the third standby portion 21 of the supply path 20 with the left-right direction as an axis. In other words, the cross section of the workpiece W from the second standby part 33 positioned on the upper side to the third standby part 21 of the supply path 20 positioned on the lower side is substantially V with the left-right direction as an axis by the feed door opening / closing mechanism 81. It is formed in a letter shape and rolls out on the inner surface of the supply path 20 and is sent out.

  In other words, the feed door 90 temporarily stops the workpiece W, but moves and opens in a direction perpendicular to the axis of the workpiece W, so that the workpiece is moved with respect to the left and right direction (extrusion direction) of the rod 68 of the extrusion mechanism 50. The axis of W is not inclined, and the workpiece W stably rolls in a normal posture from the upper second standby portion 33 to the lower third standby portion 21 and has a substantially V-shaped cross section. The workpiece W is received by the third standby portion 21 of the formed supply path 20, and the posture of the workpiece W is prevented from being lost.

  When the disc rotation angle exceeds 125 °, the limit switch 83 (L2) continues to be in an OFF state until the next rotation, and the drive rod 88 is pushed upward by switching the ventilation of the solenoid valve, and the air cylinder 87 (S2) The OFF state continues.

  When the disc rotation angle exceeds 177.5 °, as shown in FIG. 8, the pressing portion 66 rotates and presses the swinging bar 64 in a substantially vertical state. Further, the protrusion 68a of the rod 68 is pressed to convert the rotational motion of the disk portion 57 into a linear motion along the left-right direction.

  In this embodiment, the pressing portion 66 continues to push the swing bar 64 at a disc rotation angle of about 120 ° between 177.5 ° and 297.5 °. As a result, as shown in FIG. 9, the rod 68 is pushed out to the left side, and the rod 68 pushes out the workpiece W waiting in the third standby portion 21 with the horizontal direction as an axis, and the grinding wheel 101 of the centerless processing apparatus 100. The workpiece W is supplied between the adjusting wheel 102 and the vehicle. In other words, the rod 68 feeds the workpiece W in a direction along the axis of the workpiece W.

  Thus, in the front view of FIG. 8, the pressing portion 66 moves circularly with the rotation of the disk 58b, and the swing bar 64 swings and the rod 68 moves linearly. The extrusion becomes smooth and gentle, which contributes to preventing the posture of the work W from being broken. Further, when changing the supply feed speed of the workpiece W, the speed of the motor 52 for rotating the disk portion 57 can be adjusted to adjust the extrusion speed of the workpiece W, so that the dimensional accuracy of the workpiece W can be adjusted relatively easily. Can be improved.

  When the disc rotation angle exceeds 177.5 °, the pressing of the pressing portion 66 to the swinging bar 64 is completed, and the swinging bar 64 is returned to a substantially vertical state by the second urging member 69, and is swung until the next rotation. The moving bar 64 holds the posture.

  On the other hand, if the work W is clogged on the downstream side of the supply path 20 for some reason, the frictional force of the friction clutch 54 is exceeded, which causes the drive disk 55 to slide with respect to the driven disk 56, thereby driving the drive shaft 53 and the drive shaft. Only the disk 55 rotates and the power transmission of the motor 52 is interrupted. Thereby, the rotation of the compression coil spring 60 and the disk portion 57 integrated with each other is stopped, the pushing of the swing bar 64 pressed by the pressing portion 66 is stopped, and the rod 68 pressed by the swing bar 64 is stopped. Then, the extrusion of the workpiece W is stopped.

  That is, when the work W is clogged on the downstream side of the supply path 20, the drive disk 55 is idled, the power transmission to the driven disk 56 is interrupted, and the pushing of the work W is stopped. At this time, as shown in FIG. 10, since the limit switch 74 and the limit switch 83 are in the OFF state, the air cylinder 78 and the air cylinder 87 are also in the OFF state, and the feed mechanism 72 and the feed door opening / closing mechanism 81 move the workpiece W. It will not be sent out.

  The automatic operation as described above is realized by the control of the sequence controller or the like. In the state where the pushing of the workpiece W is stopped, a timer is set in relation to the operation of the limit switch 74 and the limit switch 83, and the predetermined operation is performed. If the limit switch 74 and the limit switch 83 are not turned on even after a lapse of time, the warning device is activated to warn the worker and the administrator that the work W feed is stopped and is in an abnormal state, The driving of the motor 52 can be stopped. With such a configuration, it is possible to prevent the abnormal state such as clogging of the workpiece W from being continued, and to prevent the workpiece supply device 10 and the workpiece W from being defective.

  The workpiece supply device 10 configured as described above includes a supply path 20 that supplies the workpiece W between the grinding wheel 101 and the adjustment wheel 102 of the centerless processing apparatus 100, and a chute 30 that supplies the workpiece W to the supply path 20. A workpiece supply device that supplies a workpiece W between the grinding wheel 101 and the adjustment wheel 102, and the chute 30 is connected to the supply channel 20 and has a direction along the supply direction of the workpiece W in the supply channel 20 as an axis. For the first standby unit 32, the feed passage 31 through which the workpieces W arranged in the direction are sent, the first standby unit 32 that is connected to the feed passage 31 and that stands at the head of the feed order, and And a second standby part 33 disposed at a position along the supply direction of the workpiece W in the supply path 20, and the supply path 20 is formed below the second standby part 33, and a third standby part 21. The first waiting from the feed passage 31 A feed mechanism 72 that pushes and sends one workpiece W sent to the unit 32 to the second standby unit 33 at a predetermined timing, and transfers a single workpiece W sent to the second standby unit 33 to the third standby unit 21. A feed door opening / closing mechanism 81 having a feed door 90 for moving, and opening / closing the feed door 90 at a predetermined timing; and a grinding wheel 101 at a predetermined timing with one workpiece W sent to the third standby unit 21 A rod 68 that is horizontally moved in the axial direction so as to be pushed out between the adjusting wheels 102 is provided, and an extrusion mechanism 50 that is caused to move in the axial direction of the rod 68 by swinging the swing bar 64 by the rotation of the disk 58b. The disc portion 57 having 50 discs 58b is provided with a friction clutch 54. When an excessive load is applied during the pushing operation of the rod 68, the swing bar 64 stops and the rod 68 is pushed out. There has been configured to stop.

  According to this, the workpiece W in a state in which the direction along the supply direction of the workpiece W in the supply path 20 is aligned as the axial direction is moved from the first standby unit 32 to the supply direction of the workpiece W in the supply path 20 by the feeding mechanism 72. By separating and feeding one by one to the second standby section 33 located along the position, it is possible to prevent a plurality of workpieces W from being fed from the feed passage 31 and interfere with each other. The workpiece W is rolled and sent from the second standby portion 33 to the lower third standby portion 21 to prevent the posture of the workpiece W from being lost, and the workpiece W supplied to the third standby portion 21 is rotated by the disk 58b. Thus, the rocking bar 64 is swung to move the rod 68 linearly, and the rod 68 is pushed out more smoothly and gently than the fluid cylinder or the like, and the workpiece W is supplied between the grinding wheel 101 and the adjusting wheel 102. So Stably becomes possible to supply the workpiece W to Ntaresu processing apparatus 100, it is possible to suppress the clogging of the workpiece W.

  Further, when an excessive load is applied during the pushing operation of the rod 68 by the friction clutch 54 provided in the disk portion 57, the power transmission is cut off, the swing bar 64 is stopped, and the pushing of the rod 68 is stopped. Even if the workpiece W is clogged, the occurrence of defective products can be prevented.

  Further, the push-out mechanism 50 includes the swing bar 64 that is pivotally supported on the main body 40 on which the push-out mechanism 50 is disposed, with the direction along the rotation axis of the disk portion 57 as the rotation axis, and the disk portion 57 to the disk. The pressing portion 66 is provided so as to protrude along the rotation axis direction of the portion 57 and is formed so as to be able to press the swing bar 64, and the workpiece W is pushed out by being pressed by the swing bar 64 pressed by the pressing portion 66. The rod 68, a cylindrical rod sliding portion 67 that linearly moves the rod 68 inside, and a second urging member 69 that urges the rod 68 to the side opposite to the pushing direction of the rod 68. Is desirable.

  With such a configuration, the rotational speed of the driving device 51 that rotates the disk portion 57 is adjusted in accordance with the state of the outer peripheral surface of the work W and the wear state of the grinding wheel 101, and the pushing speed of the work W is adjusted. It becomes possible to adjust, and the dimensional accuracy of the workpiece W can be improved.

  If the workpiece W is a magnetic body, the magnet attracts the workpiece W at the third standby portion 21 having a V-shaped cross section, and therefore the axis of the workpiece W with respect to the pushing direction of the rod 68 of the pushing mechanism 50. Can increase the effect of not slanting.

  The workpiece supply apparatus 10 of the present invention is not limited to the above configuration. That is, various design changes can be made without departing from the gist of the present invention.

  For example, the push-out mechanism 50 only needs to be able to convert a rotational motion into a linear motion, and can be configured using a slide link mechanism or the like.

  The friction clutch 54 may be any clutch that can stop the pushing operation when an excessive load is applied during the pushing operation of the rod 68 of the pushing mechanism 50, and other clutch mechanisms that can cut off the power transmission can be applied. it can.

  Further, if the pressing portion 66 is formed so that its attachment position can be moved along the radial direction of the disk 58b, the pushing amount of the swing bar 64 can be adjusted, and the pressing portion 66 can flexibly correspond to the axial length of the workpiece W. be able to.

DESCRIPTION OF SYMBOLS 100 Centerless processing apparatus 101 Grinding wheel 102 Adjustment wheel 10 Work supply apparatus 20 Supply path 21 Third standby part 30 Chute 31 Feed path 32 First standby part 33 Second standby part 40 Main body part 50 Extrusion mechanism 54 Friction clutch 57 Disk part 58b Disk 64 Oscillating bar 66 Pressing part 67 Rod sliding part 68 Rod 69 Second urging member 72 Feeding mechanism 81 Feeding door opening / closing mechanism O Center of rotation W Workpiece

Claims (2)

A supply path for supplying a workpiece between the grinding wheel and the adjustment wheel of the centerless processing apparatus; and a chute for supplying the workpiece to the supply path, and supplying the workpiece between the grinding wheel and the adjustment wheel. A workpiece supply device,
The chute is connected to the supply path, and is connected to the feed path through which the work in a state where the direction along the supply direction of the work in the supply path is aligned as an axial direction is sent, and the feed path. A first standby unit on which the workpiece positioned at the head of the feeding order stands by, and a second standby unit disposed at a position along the supply direction of the workpiece on the supply path with respect to the first standby unit. With
The supply path includes a third standby part formed below the second standby part,
A feed mechanism that pushes and sends one workpiece sent from the feed path to the first standby unit at a predetermined timing to the second standby unit;
A feed door opening / closing mechanism having a feed door for rolling the one workpiece sent to the second standby part to the third standby part, and opening and closing the feed door at a predetermined timing;
Provided is a rod that horizontally moves in the axial direction so that one workpiece sent to the third standby section is pushed between the grinding wheel and the adjusting wheel at a predetermined timing, and the rocking bar is swung by the rotation of the disk. An extruding mechanism for moving in the rod axis direction,
The disk portion having the disk of the push-out mechanism is provided with a friction clutch, and when an excessive load is applied during the push-out operation of the rod, the swing bar stops and the push-out of the rod stops. Work supply device. The extrusion mechanism is
The swing bar pivotally supported on the main body portion on which the push-out mechanism is disposed with the direction along the rotation axis of the disk portion as a rotation axis;
A pressing portion that is disposed so as to protrude from the disk portion along the rotation axis direction of the disk portion, and is configured to be able to press the swing bar;
The rod that is pressed by the rocking bar pressed by the pressing portion to push out the workpiece;
A cylindrical rod sliding portion that linearly moves the rod inside;
A second urging member that urges the rod to the opposite side of the rod pushing direction;
The workpiece supply apparatus according to claim 1, comprising:

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