JP6246850B2 - Ring manufacturing equipment - Google Patents

Description

  The present invention relates to a ring manufacturing apparatus that obtains a ring by cutting a drum held by a holding member.

  As a power transmission belt employed in a continuously variable transmission of an automobile, a laminated ring in which a plurality of metal rings are laminated is used. In the metal ring constituting the laminated ring, first, both end edges of a rectangular metal thin plate are welded to form a cylindrical workpiece (drum), and then the drum is subjected to, for example, the action of laser light. It is produced by cutting into a ring shape with a predetermined width.

  In this cutting method, the drum is passed through a holding member having a substantially cylindrical shape. Thereafter, the holding member mounted on the cutting device is expanded in diameter and the side wall comes into contact with the inner peripheral surface of the drum, whereby the drum is corrected to a substantially perfect circle shape and held on the side wall of the holding member. In this state, the drum is rotated together with the holding member, and laser light is irradiated from the outer peripheral wall side of the drum. The drum is cut by this laser beam to obtain a ring. Thereafter, the holding member is removed from the cutting device, and the ring is detached from the holding member.

  Each process described above is automatically performed by various mechanisms as described in Patent Document 1.

International Publication No. 2012/111213

  In this type of prior art, one holding member is used. In this case, the cutting operation may be performed while the drum is held by the cutting device via the holding member, while the ring is removed from the holding member, and further while the holding member is being cleaned. Can not. For this reason, in the prior art, it is not easy to improve the production efficiency of the ring per unit time.

  The present invention has been made in order to solve the above-described problems, and can improve the production efficiency of the ring, and can avoid the occurrence of scratches on the inner peripheral surface of the drum or ring. The purpose is to provide.

To achieve the above object, the present invention provides a ring manufacturing apparatus for obtaining a ring by cutting a drum made of a metal cylindrical body in a state of being held by a holding member made of a hollow body
First conveying means for conveying the drum in a standing posture whose height direction is oriented in the vertical direction to a standby position of the holding member that is a standing posture in which the height direction is oriented in the vertical direction;
First gripping means for gripping the drum and passing the drum through the holding member at the standby position to form a holding member with a drum;
A delivery mechanism including a rotary table disposed on the standby position, on which the holding member with drum and the holding member with ring that holds the ring obtained by cutting are placed;
A posture changing means for changing the holding member with drum sent out from the rotary table to a recumbent posture whose height direction is oriented in the horizontal direction, or changing the holding member with a ring from a recumbent posture to a standing posture. When,
A second gripping means for gripping the holding member with a drum or the holding member with a ring in a lying position;
A cutting mechanism for cutting the drum of the holding member with the drum in a recumbent posture to obtain the ring;
Third gripping means for gripping the ring from the holding member with the ring, which is changed to the standing posture by the posture changing means after being transported by the second gripping means, and is waiting on the rotary table, and separating from the holding member. When,
Second conveying means for receiving and conveying the ring from the third gripping means;
With
The first gripping means, the second gripping means, and the third gripping means are individually raised or lowered under the action of the first lifting mechanism, the second lifting mechanism, and the third lifting mechanism, respectively. To do.

  In the present invention configured as described above, the holding member is obtained by covering the drum, changing the posture of the holding member holding the drum (the holding member with drum), transporting to the cutting mechanism, and cutting the drum. The conveyance and posture change of the holding member with the ring holding the ring from the cutting device, the separation of the ring and the holding member, the unloading of the ring, etc. can be carried out continuously and automatically. That is, when any work is performed on the holding member, it is possible to simultaneously perform the cutting operation of the drum of the holding member with the drum.

  For this reason, it is possible to use a plurality of holding members. In other words, the drum can be covered or transported to other holding members while the ring is being produced. Therefore, a ring can be produced efficiently.

  In addition, the holding member is covered with the drum and the ring is detached from the holding member in an upright posture in which the height direction of the holding member is the vertical direction. In the standing posture, for example, spatter that is generated when the drum is cut by laser light and adheres to the holding member is difficult to move to the inner peripheral surface of the ring. Therefore, it is possible to avoid the occurrence of scratches due to sputtering on the inner peripheral surface of the ring. As a result, a high quality ring is obtained.

  The holding member may have a tapered reduced diameter portion at both ends in the height direction. In this case, when the holding member on the rotary table is passed through the drum, the first reduced diameter means for reducing the diameter of the holding member by tightening the tapered diameter-reducing portion inward in the diameter direction, It is preferable to further have a second diameter reducing means for reducing the diameter of the holding member by tightening the tapered diameter reducing portion inward in the diameter direction when the ring is detached.

  With this configuration, the diameter of the holding member can be made smaller than the inner diameter of the drum. Therefore, when the drum is passed through the holding member or when the holding member with the ring is separated into the ring and the holding member, a clearance is formed between the drum or the ring and the holding member. Therefore, it becomes easy to perform these operations. This is because it is avoided that the side wall of the holding member is in sliding contact with the inner peripheral surface of the drum or ring. For this reason, it is possible to prevent the inner peripheral surface from being damaged.

  Note that the holding member preferably has a tapered portion formed therein. In this case, a spindle that engages with the tapered portion may be provided in the cutting mechanism. In this case, since the diameter of the holding member is increased as the spindle engages with the tapered portion, the state where the drum and the ring are firmly held by the holding member is maintained.

  Moreover, the said attitude | position change means is good to have a nail | claw provided with the taper-shaped part which presses the opening vicinity in the edge part of the holding member which is a hollow body. That is, the holding member is held by the holding claws and the posture of the holding member with drum or the holding member with ring may be changed.

  The posture of the holding member is changed from the standing posture to the lying posture or vice versa. When this posture is changed, it is conceivable that the spatter adhered to the holding member falls on the holding claws. However, in the above configuration, since the opening is gripped by the tapered nail, it is possible to expand the diameter of the holding member while minimizing the contact area between the holding member and the nail. Therefore, it is possible to suppress the spatter from affecting the drum and to suppress the positional deviation of the drum when the posture is changed.

  Further, when the posture is changed, the tapered portion of the clamping claw does not engage with the internal tapered portion for engaging with the spindle. For this reason, there is no concern that the internal taper portion is damaged. Therefore, when holding the holding member with the drum in the cutting mechanism, the spindle is engaged with the internal taper portion with high accuracy. For this reason, the dimensional accuracy of the drum at the time of a cutting | disconnection and the ring obtained becomes favorable.

  The second gripping means preferably has a plurality of gripping portions. As a result, a plurality of holding members (or holding members with drums, holding members with rings) can be simultaneously conveyed. Therefore, for example, while one holding member is assembled to the cutting mechanism, another one holding member can be conveyed to the feeding mechanism. For this reason, the production efficiency of the ring is further improved.

  In order to support the holding member on the rotary table, a support hole for inserting a part of the holding member (for example, a tapered reduced diameter portion) may be formed. Here, the holding member is supported in a standing posture. Therefore, it is preferable to form a through hole that is continuous with the support hole and opens on the side surface of the rotary table. In this case, when the holding member is detached from the support hole while maintaining the standing posture, a part of the holding member inserted into the support hole passes through the passage hole. Therefore, it becomes easy to remove from the support hole while maintaining the standing posture.

  Spatter may be attached to the holding member involved in the cutting of the drum. Therefore, it is preferable to provide a cleaning unit for removing this spatter in the ring manufacturing apparatus. Thereby, a clean holding member can be re-supplied to the delivery mechanism. That is, since the holding member can be used in a circulating manner, the capital investment can be reduced.

  According to the present invention, the ring manufacturing apparatus is configured to include various mechanisms. For this reason, covering the holding member with the drum, changing the posture of the holding member with drum and conveying it to the cutting mechanism, conveying and changing the posture of the holding member with ring from the cutting device, separating the ring and the holding member, carrying out the ring, etc. It is possible to carry out each of the above operations continuously and automatically.

  In this configuration, it is possible to simultaneously perform a cutting operation of the drum of the holding member with the drum while performing some work on the holding member. For this reason, the production efficiency of the ring is improved.

  In addition, since the holding member is covered with the drum and the ring is detached from the holding member in an upright posture in which the height direction of the holding member is a vertical direction, the inner peripheral surface of the ring is sputtered. It is possible to avoid the resulting scratches.

  For the reasons described above, a high-quality ring can be manufactured efficiently.

It is a whole schematic perspective view of a drum and a holding member. It is a typical top view of the ring manufacturing apparatus concerning an embodiment of the invention. It is a principal part schematic perspective view of the 1st holding means which comprises the ring manufacturing apparatus of FIG. It is a principal part schematic perspective view of the delivery part vicinity which comprises the ring manufacturing apparatus of FIG. It is a longitudinal cross-sectional schematic diagram which shows the state which diameter-reduced this holding member with a drum by inserting the taper-shaped diameter-reduced part of a holding member with a drum in the diameter reduction means. It is a principal part schematic side view of a posture change part, a transfer part, and a cutting part. FIG. 7 is a main part schematic side view illustrating a state in which the holding member with the drum on the rotary table is clamped by the clamping claws and is changed from the standing posture to the lying posture from FIG. 6. From FIG. 7, the main part schematic side view showing a state where the mounting board and the second spindle are displaced in the direction approaching the first spindle, and the second lifting arm is lowered and the second hand holds the holding member with the drum. FIG. It is a principal part schematic side view which shows the state which the 1st hand of the 1st raising / lowering arm delivered the holding member with a ring to the clamping nail from FIG. It is a principal part schematic side view which shows the state from which the holding member with a ring was changed into the standing posture from the lying posture shown in FIG. It is a principal part schematic side view which shows the state from which the holding member with a ring on a mounting board was hold | maintained by the 1st hand of the 1st raising / lowering arm from FIG.

  Preferred embodiments of the ring manufacturing apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. Hereinafter, the metal ring is also simply referred to as “ring”.

  First, the drum 10, the ring 12, and the holding member 20 will be described with reference to FIG. First, the drum 10 is a cylindrical body obtained by welding both end edges of a rectangular metal thin plate. The drum 10 is cut by the laser beam L (see FIGS. 8 and 9), whereby the ring 12 is obtained.

  On the other hand, the holding member 20 is for holding the drum 10 when the drum 10 is cut by the laser beam L in a cutting device 120 (see FIG. 2) which is a cutting mechanism. As shown in FIG. 1, the holding member 20 includes a large-diameter portion 22, a first tapered reduced-diameter portion 24 that protrudes from the large-diameter portion 22 and decreases in a taper shape as it is separated from the large-diameter portion 22. It is a hollow body having a second tapered reduced diameter portion 26 and having an insertion hole 28 formed therethrough along the longitudinal direction thereof. The insertion hole 28 includes a first internal taper portion 29a whose inner diameter is tapered in a taper shape from the first tapered reduced diameter portion 24 toward the second tapered reduced diameter portion 26, and the second tapered reduced diameter portion 26. And a second internal taper portion 29b whose inner diameter is reduced in a taper shape toward the first taper reduced diameter portion 24 (see FIG. 5).

  The holding member 20 is formed with a plurality of first straight grooves 30 and second straight grooves 32 that are formed by cutting the holding member 20 linearly along the longitudinal direction so as to be radial. Both the first linear groove 30 and the second linear groove 32 open on the insertion hole 28 and the side wall side. That is, the first straight groove 30 and the second straight groove 32 are bottomless grooves (through grooves) having no bottom surface.

  The first linear groove 30 extends from the tip of the first tapered reduced diameter portion 24 to the middle of the second tapered reduced diameter portion 26. That is, it is an open end on the first tapered reduced diameter portion 24 side, and a closed end on the second tapered reduced diameter portion 26 side. On the contrary, the second linear groove 32 extends from the tip of the second tapered reduced diameter portion 26 to the middle of the first tapered reduced diameter portion 24, and is on the first tapered reduced diameter portion 24 side. Is a closed end, and the second tapered reduced diameter portion 26 is an open end.

  The first linear grooves 30 and the second linear grooves 32 are spaced apart from each other at substantially equal intervals and are alternately arranged in parallel. In the present embodiment, the number of the first linear grooves 30 and the second linear grooves 32 is eight. That is, the phase difference between the adjacent first linear groove 30 and the second linear groove 32 is about 22.5 °.

  On the side wall of the holding member 20, a plurality of circumferential grooves 34 are formed that extend along the circumferential direction of the side wall and open so as to communicate the first linear groove 30 and the second linear groove 32 adjacent to each other. . As can be seen from FIG. 1, the circumferential groove 34 does not reach the insertion hole 28.

  The holding member 20 is entirely coated (not shown) including the side wall, the inner peripheral surface of the insertion hole 28, each side surface of the first linear groove 30, the second linear groove 32, each side surface and each bottom surface of the circumferential groove 34. Covered with. Suitable examples of the material for the coating include copper or a copper alloy. In this case, it is particularly easy to form the coating by plating. In addition, since the role etc. of each above-mentioned groove | channel are explained in full detail in patent document 1, Unexamined-Japanese-Patent No. 2014-24094, etc., the detailed description is abbreviate | omitted.

  Next, a ring manufacturing apparatus for obtaining the ring 12 from the drum 10 will be described. FIG. 2 is a schematic plan view of the ring manufacturing apparatus 40 according to the present embodiment. The ring manufacturing apparatus 40 includes a carry-in / out unit 42, a delivery unit 44, a cleaning unit 46, a posture changing unit 48, a transfer unit 50, and a cutting unit 52.

  The carry-in / out section 42 includes a first conveyor belt 56 (first conveyance means) for conveying the drum 10 made of a metal cylindrical body to the delivery section 44, and a ring 12 obtained by cutting the drum 10. And a second conveyor belt 58 (second conveying means) for unloading the sheet from the delivery unit 44. The lengths of the first conveyor belt 56 and the second conveyor belt 58 are substantially equal. The first conveyor belt 56 and the second conveyor belt 58 individually circulate under the action of a circulation operation mechanism (not shown).

  Of course, the first conveyor belt 56 circulates in a direction approaching the delivery part 44, while the second conveyor belt 58 circulates in a direction away from the delivery part 44. Therefore, the conveyance start point of the first conveyor belt 56 faces the conveyance end point of the second conveyor belt 58, and conversely, the conveyance end point of the first conveyor belt 56 faces the conveyance start point of the second conveyor belt 58.

  As shown in FIG. 3, the drum 10 is conveyed toward the delivery unit 44 under the action of the first conveyor belt 56 in a posture in which the height direction extends along the vertical direction, that is, in a standing posture.

  As shown in FIG. 3, first chuck claws 60 a and 60 b as first gripping means are disposed in the vicinity of the conveyance end point of the first conveyor belt 56. The first chuck claws 60a, 60b are connected to a rod of a first opening / closing cylinder (not shown) provided on the first XY stage 62, and are displaced in synchronization with directions approaching or separating from each other. Here, the first XY stage 62 includes a first displacement cylinder (first lifting mechanism) and a second displacement cylinder (not shown). The first chuck claws 60 a and 60 b can be displaced along the vertical direction or the longitudinal direction of the first conveyor belt 56 under the action of the first displacement cylinder and the second displacement cylinder.

  The first chuck claws 60a and 60b are displaced to the delivery portion 44 integrally with the table constituting the first XY stage 62 as the rod of the second displacement cylinder extends. When the rod contracts, the first chuck claws 60 a and 60 b are displaced in the vicinity of the conveyance end point of the first conveyor belt 56.

  On the other hand, in the vicinity of the conveyance start point of the second conveyor belt 58, second chuck claws 64a and 64b (third gripping means) configured according to the first chuck claws 60a and 60b are arranged as shown in FIG. The In other words, the second chuck claws 64a and 64b are connected to a rod of a second opening / closing cylinder (not shown) provided on the second XY stage 66, and are displaced in synchronism with the directions approaching or separating from each other.

  The second XY stage 66 is configured in the same manner as the first XY stage 62, and includes a third displacement cylinder (third lifting mechanism) and a fourth displacement cylinder (not shown). Accordingly, the second chuck claws 64a and 64b can be displaced along the vertical direction or the longitudinal direction of the second conveyor belt 58 under the action of the third displacement cylinder and the fourth displacement cylinder. .

  The second chuck claws 64a and 64b are displaced to the delivery part 44 integrally with the second XY stage 66 when the rod of the fourth displacement cylinder is extended. Further, when the rod contracts, it is displaced near the conveyance start point of the second conveyor belt 58.

  As will be described later, the second chuck claws 64 a and 64 b play a role of detaching the ring 12 from the holding member 20 in the delivery portion 44 and conveying the ring 12 to the second conveyor belt 58.

  As shown in FIG. 4, the delivery unit 44 has a rotary table 68. The rotary table 68 includes a rotation center portion 70, a first protrusion tip portion 72, a second protrusion tip portion 74, and a third protrusion tip portion that protrude from the rotation center portion 70 so as to be separated from each other by a phase of approximately 120 °. And a three-pronged body. A rotation shaft 77 of a rotation motor (not shown) is connected to the rotation center portion 70 therein. Therefore, the rotary table 68 rotates integrally following the rotation of the rotary shaft 77. The rotary table 68 and the rotation motor constitute a delivery mechanism. The rotation angle in one rotation is about 120 °. That is, in this embodiment, index rotation is performed.

  In each of the first projecting tip 72, the second projecting tip 74, and the third projecting tip 76, a first support hole 78, a second support hole 80, and a third support hole 82 are provided in the thickness direction (vertical direction). It penetrates along. The holding member 20 is supported in an upright posture by inserting the first tapered diameter-reduced portion 24 facing downward into any one of the first support hole 78 to the third support hole 82. The holding member 20 stands by on the turntable 68 in this state. That is, the delivery part 44 is a standby position of the holding member 20.

  On the side surfaces of the first projecting tip 72 to the third projecting tip 76, a passage hole 84 that continues to each of the first support hole 78 to the third support hole 82 opens. Accordingly, the holding member 20 is displaced in the horizontal direction even when the first tapered diameter-reduced portion 24 is inserted into any one of the first support hole 78 to the third support hole 82, so that the first support is supported. The holes 78 to the third support hole 82 can be detached. This is because the first tapered reduced diameter portion 24 passes through the passage hole 84 at this time.

  2 and 4, the first projecting tip 72 faces the first conveyor belt 56, and the second projecting tip 74 and the third projecting tip 76 face the posture changing unit 48 and the second conveyor belt 58, respectively. It shows the state of being out. Although not shown in the drawings, in the vicinity of the third projecting tip 76, a swivel holding means for transferring the holding member 20 from the third projecting tip 76 to the cleaning unit 46 (see FIG. 2) or in the opposite direction. Is provided.

  Specifically, the swivel holding means constituting the cleaning unit 46 includes a first payout arm 86 and a second payout arm 87 that are separated from each other by approximately 180 °. The first payout arm 86 and the second payout arm 87 are connected to a rotary shaft 88, and thus rotate as the rotary shaft 88 is urged to rotate. When the first payout arm 86 faces the second conveyor belt 58, the second payout arm 87 faces the cleaning section 46, and conversely, when the first payout arm 86 faces the cleaning section 46, the second payout arm 87 becomes the second conveyor. Facing the belt 58.

  As shown in FIGS. 4 and 5, a first lower rod 89 and a first upper rod 90 are disposed below and above the rotary table 68. Between the first lower rod 89 and the first upper rod 90, the holding member 20 that is transferred from the first conveyor belt 56 to a predetermined protruding tip (for example, the first protruding tip 72) is located. Similarly, a second lower rod 91 and a second upper rod 92 are provided below and above the holding member 20 delivered from the predetermined protruding tip (for example, the second protruding tip 74) to the first conveyor belt 56. It is arranged. The first lower rod 89, the first upper rod 90, the second lower rod 91, and the second upper rod 92 are driven under the action of appropriate driving means such as a hydraulic cylinder or a ball screw (not shown).

  Diameter reducing cups 98a and 98b as first diameter reducing means are provided at the tips of the first lower rod 89 and the first upper rod 90. Similarly, at the tips of the second lower rod 91 and the second upper rod 92, diameter-reducing cups 98c and 98d are provided as second diameter-reducing means. Tapered portions 99a to 99d corresponding to the tapered shapes of the first tapered reduced diameter portion 24 and the second tapered reduced diameter portion 26 are formed near the openings of the reduced diameter cups 98a to 98d.

  Here, the main part schematic side surface of the attitude | position change part 48, the transfer part 50, and the cutting part 52 is shown in FIG. First, the posture changing unit 48 has clamping claws 100a and 100b that are opened and closed by a third opening and closing cylinder (not shown). Among these, the clamping claw 100a has a substantially L shape, and the clamping claw 100b can be displaced along the long side portion of the clamping claw 100a. That is, the clamping claw 100b is displaced in a direction approaching or separating from the short side portion of the clamping claw 100a as the rod constituting the third opening / closing cylinder expands and contracts.

  The clamping claw 100 a faces the first tapered reduced diameter portion 24 protruding from the second support hole 80 of the rotary table 68. One clamping claw 100 b faces the second tapered reduced diameter portion 26. Engaging protrusions 102a and 102b as tapered portions are respectively provided on the short sides of the clamping claws 100a and 100b, and when the clamping claws 100b are displaced so as to approach the short sides of the clamping claws 100a, Each engagement protrusion 102a, 102b engages with the opening at both ends of the insertion hole 28 of the holding member 20. Thereby, the holding member 20 (holding member with drum 20a) holding the drum 10 by the side wall is held between the holding claws 100a and 100b.

  The long side part of the clamping nail | claw 100a is connected with the turning arm 104 as an attitude | position change means. The turning arm 104 can turn the holding claws 100a and 100b by about 90 ° vertically from the horizontal direction or vice versa (see FIG. 7). Along with this turning, the holding member with drum 20a is changed from the standing posture to the recumbent posture in which the height direction is oriented in the horizontal direction.

  Further, the swing arm 104 can be extended and contracted, and the drum holding member 20a is detached from the rotary table 68 when contracted.

  As shown in FIG. 6, the transfer unit 50 transfers the holding member with drum 20 a from the holding claws 100 a and 100 b to the cutting unit 52, and transfers the holding member with ring 20 b from the cutting unit 52 to the holding claws 100 a and 100 b. Is for. The transfer unit 50 includes a guide rail 106, and a first elevating arm 110 and a second elevating arm 112 (both second gripping means) that are individually displaced on the guide rail 106. The first elevating arm 110 and the second elevating arm 112 are displaced along the vertical direction under the action of a first elevating cylinder and a second elevating cylinder (both are second elevating mechanisms) (not shown). Ascend or descend.

  The first lifting arm 110 has a first hand 114, and the second lifting arm 112 has a second hand 116. The first hand 114 and the second hand 116 are gripping units that individually hold either the holding member with drum 20a or the holding member with ring 20b.

  The cutting unit 52 includes a cutting device 120 that cuts the drum 10. The cutting device 120 includes a mounting board 122 on which the holding member with drum 20a or the holding member with ring 20b is mounted. In addition, a first spindle 124 and a second spindle 126 that constitute the cutting device 120 are disposed at a position sandwiching the mounting board 122 therebetween. The mounting board 122 and the second spindle 126 can be individually displaced in a direction approaching or separating from the first spindle 124. The first spindle 124 is driven to rotate, and the second spindle 126 is driven to rotate.

  The cutting device 120 further includes a laser light irradiation unit 128 (see FIG. 8). The laser beam L is irradiated from the laser beam irradiation unit 128 to the drum 10 held by the holding member 20 that is held by the first spindle 124 and the second spindle 126 and rotates under the action of the first spindle 124. . The drum 10 is cut by the laser light L.

  Since the other structure of the cutting device 120 is described in detail in Patent Document 1, Japanese Patent Application Laid-Open No. 2014-24094, and the like, detailed description thereof is omitted.

  The ring manufacturing apparatus 40 according to the present embodiment is basically configured as described above, and the relationship between the operation and the operation in the process of obtaining the ring 12 from the drum 10 is next described. I will explain it.

  As shown in FIG. 2, the plurality of drums 10 are sequentially carried in by the first conveyor belt 56 that circulates. At this time, the drum 10 is in a standing posture. In addition, the holding member 20 has the first tapered reduced diameter portion 24 inserted into the first support hole 78 formed in the first protruding tip 72 of the rotary table 68, that is, the delivery portion in an upright position. Waiting at 44.

  As shown in FIG. 3, when the drum 10 reaches the conveyance end point of the first conveyor belt 56, the first chuck claws 60a and 60b are lowered under the action of the first displacement cylinder. After surrounding the drum 10, the first chuck claws 60a and 60b are displaced synchronously so as to approach each other under the action of the first opening / closing cylinder. Due to this displacement, the first chuck claws 60a and 60b are closed, and the drum 10 is gripped by the first chuck claws 60a and 60b.

  Next, the first chuck claws 60a and 60b are raised under the action of the first displacement cylinder. Thereafter, the rod constituting the second displacement cylinder extends, whereby the first chuck claws 60 a and 60 b are displaced toward the first projecting tip 72 of the rotary table 68. Of course, the drum 10 is raised and displaced integrally with the first chuck claws 60a and 60b.

  By extending the rod of the second displacement cylinder, the first chuck claws 60 a and 60 b and the drum 10 are positioned immediately above the first projecting tip 72. Thereafter, the first lower rod 89 approaches the first tapered reduced diameter portion 24, and the first upper rod 90 approaches the second tapered reduced diameter portion 26. As a result, as shown in FIG. 5, the first tapered reduced diameter portion 24 enters the reduced diameter cup 98a, and the second tapered reduced diameter portion 26 enters the reduced diameter cup 98b.

  With this approach, the tapered portion 99a and the first tapered reduced diameter portion 24 in the reduced diameter cup 98a are engaged, and the tapered portion 99b and the second tapered reduced diameter portion 26 in the reduced diameter cup 98b are engaged. Engage. Accordingly, the first tapered reduced diameter portion 24 and the second tapered reduced diameter portion 26 are tightened inward in the diameter direction. As a result, the holding member 20 is slightly reduced in diameter. Since the holding member 20 is a hollow body in which the first linear groove 30, the second linear groove 32, and the circumferential groove 34 are formed and the insertion hole 28 is formed as an inner hole, the diameter of the holding member 20 is easily reduced (elastic deformation). To do.

  In this state, the first chuck claws 60a and 60b are lowered again under the action of the first displacement cylinder. Accordingly, the drum 10 is passed through the holding member 20. That is, the drum holding member 20 a in which the holding member 20 is covered with the drum 10 is formed.

  Since the holding member 20 is reduced in diameter as described above, the large-diameter portion 22 of the holding member 20 is slightly smaller in diameter than the inner diameter of the drum 10. For this reason, when the holding member 20 is passed through the drum 10, it is avoided that the side wall of the holding member 20 is in sliding contact with the inner peripheral surface of the drum 10. Therefore, the occurrence of scratches on the inner peripheral surface of the drum 10 is avoided.

  Next, the first lower rod 89 and the first upper rod 90 are retracted in the direction away from the holding member with drum 20a. Thereby, the 1st taper-shaped diameter-reduced part 24 and the 2nd taper-shaped diameter-reduced part 26 are each released from restraint by the cups 98a and 98b for diameter-reduction. Therefore, the holding member 20 that has been reduced in diameter so far expands due to the elastic action.

  The outer diameter of the large-diameter portion 22 of the holding member 20 is set to be larger than the inner diameter of the drum 10 in a situation where no external force is applied. Accordingly, when the diameter of the holding member 20 released from the restraint is increased, the drum 10 is temporarily held by the holding member 20 accordingly.

  While the above operations are performed by sequence control, the third projecting tip portion 76 separates the ring 12 and the holding member 20 and transfers the holding member 20 to which the ring 12 is separated to the cleaning unit 46 (and The operation of transferring the cleaned holding member 20 to the rotary table 68) is sequentially performed. This point will be described later.

  Thereafter, the first chuck claws 60a, 60b are displaced in the direction of separating from each other under the action of the first opening / closing cylinder to be opened. That is, the drum 10 is released. The first chuck claws 60a and 60b are lifted by contraction of the rod of the first displacement cylinder and are separated from the holding member with drum 20a.

  Next, the rotary table 68 is rotated by an index of about 120 ° clockwise around the rotation center portion 70. Thereby, the 1st protrusion front-end | tip part 72 holding the holding member 20a with a drum leaves | separates from the 1st conveyor belt 56, and faces the nail | claw 100a, 100b of the attitude | position change part 48. FIG. At the same time, the third protruding tip 76 that supports the new holding member 20 that has been cleaned comes close to the first conveyor belt 56. Further, the second projecting tip 74 that supports the holding member with ring 20 b is close to the second conveyor belt 58.

  Next, the swivel arm 104 constituting the posture changing unit 48 is extended, and as shown in FIG. 6, the holding claws 100a and 100b surround the drum holding member 20a on the first projecting tip 72, as shown in FIG. . At this time, the engaging protrusion 102a of the holding claw 100a engages with the first tapered reduced diameter portion 24 side opening of the insertion hole 28 of the holding member 20.

  At this time, the first hand 114 of the first elevating arm 110 holds the holding member 20b with the ring that has already been cut off the drum 10, while the second hand 116 of the second elevating arm 112 is the clamping claw 100a. The holding member with drum 20a to be cut prior to the holding member with drum 20a surrounded by 100b is held. Further, the first elevating arm 110 and the second elevating arm 112 are raised, and the mounting board 122 and the second spindle 126 are separated from the first spindle 124. Hereinafter, although a special description is omitted, the first elevating arm 110 is raised or lowered under the action of the first elevating cylinder, and the second elevating arm 112 is raised or lowered under the action of the second elevating cylinder. To do.

  Then, the third opening / closing cylinder is energized, and the clamping claw 100b is displaced toward the short side portion of the clamping claw 100a. As a result, the engaging protrusion 102b of the holding claw 100b engages with the opening on the second tapered reduced diameter portion 26 side of the insertion hole 28 of the holding member 20, and the holding member with drum 20a is held by the holding claws 100a and 100b. . Note that the engagement protrusions 102a and 102b do not engage with the first internal taper portion 29a and the second internal taper portion 29b (see FIG. 5).

During this time, the first elevating arm 110 and the second elevating arm 112 are guided rails so that the second hand 116 reaches the placement board 122 when the second elevating arm 112 is lowered (see FIG. 7). 106 is displaced.

  Next, the swing arm 104 slightly contracts. That is, it moves backward in a direction away from the rotary table 68. At this time, the first tapered reduced diameter portion 24 passes through the passage hole 84 that is continuous with the first support hole 78. Therefore, the drum-equipped holding member 20 a is easily detached from the first support hole 78.

  Next, as shown in FIG. 7, the turning arm 104 turns about 90 ° so as to go vertically upward from the horizontal direction. Following this, the holding claws 100a and 100b also rotate integrally. Accordingly, the holding member with drum 20a is changed from the standing posture up to then to the lying posture. During this time, the second elevating arm 112 is lowered, and the holding member with drum 20 a is transferred from the second hand 116 to the mounting board 122. Accordingly, the second hand 116 becomes empty. Thereafter, the second lifting / lowering arm 112 is lifted so as to retract from the mounting board 122.

  Next, the mounting board 122 and the second spindle 126 are displaced in a direction approaching the first spindle 124 (see FIG. 8). As a result, the drum holding member 20 a on the mounting board 122 approaches the first spindle 124. In addition, the leading ends of the first spindle 124 and the second spindle 126 enter the openings at both ends of the insertion hole 28 of the holding member 20.

  At this time, the tip of the first spindle 124 engages with the first internal tapered portion 29a, and the tip of the second spindle 126 engages with the second internal tapered portion 29b. By this engagement, the drum-equipped holding member 20a is held by the cutting device 120. In addition, the holding member 20 is pressed from the inside by the first spindle 124 and the second spindle 126 that have entered the insertion hole 28 to expand the diameter.

  As described above, when the posture of the holding member with drum 20a is changed, the engaging protrusions 102a and 102b are not engaged with the first inner tapered portion 29a and the second inner tapered portion 29b. For this reason, there is no fear that the first internal tapered portion 29a and the second internal tapered portion 29b are damaged. Therefore, the first spindle 124 and the second spindle 126 engage with the first internal tapered portion 29a and the second internal tapered portion 29b with high accuracy. Moreover, since the first internal tapered portion 29 a and the second internal tapered portion 29 b are provided along the height direction of the holding member 20, the drum 10 is firmly held over the height direction of the holding member 20.

  At the same time, the first elevating arm 110 and the second elevating arm 112 are displaced on the guide rail 106. As a result, the second hand 116 that has become empty is positioned to face the swiveling claws 100a and 100b.

  Next, as shown in FIG. 8, the second elevating arm 112 is lowered, and as a result, the holding member with drum 20 a is transferred from the holding claws 100 a and 100 b to the second hand 116. That is, the second hand 116 holds the holding member with drum 20a. Thereafter, the clamping claws 100a and 100b are slightly opened, thereby releasing the drum holding member 20a from the restraining force. Furthermore, the 2nd raising / lowering arm 112 raises so that it may retract | retreat from the clamping claws 100a and 100b. Accordingly, the holding member with drum 20a is detached from the clamping claws 100a and 100b, and the clamping claws 100a and 100b are emptied.

  At the same time, the laser beam L is emitted from the laser beam irradiation unit 128. As the laser beam L enters the drum 10, the drum 10 is cut to form a ring 12. The irradiation position of the laser beam L substantially corresponds to the position of the circumferential groove 34.

  When the laser beam irradiation unit 128 is sequentially displaced toward the first spindle 124, the cutting of the drum 10 is repeated, and a plurality of rings 12 are obtained. That is, the holding member 20b with a ring in which the holding member 20 holds the ring 12 is formed. Since the cutting is performed in a state where the first internal taper portion 29a and the second internal taper portion 29b are engaged with each other with high accuracy, the dimensional accuracy of the drum 10 at the time of cutting and the ring 12 obtained is improved.

  During this time, the first elevating arm 110 and the second elevating arm 112 are displaced on the guide rail 106. As a result, as shown in FIG. 9, the first hand 114 is positioned to face the nipping claws 100a and 100b that have become empty. As the first elevating arm 110 is lowered, the holding member with ring 20b already held in the first hand 114 is positioned so as to be surrounded by the holding claws 100a and 100b.

  Thereafter, the clamping claws 100b are displaced by the displacement of the clamping claws 100b. Along with this, the holding member with ring 20b is held between the holding claws 100a and 100b. The engaging protrusions 102a and 102b of the holding claws 100a and 100b engage with the openings at both ends of the holding member 20 in the same manner as described above. Eventually, the holding member with ring 20b is transferred from the first hand 114 to the holding claws 100a and 100b, and the first hand 114 becomes empty. After the delivery is completed, the first elevating arm 110 is raised and separated from the clamping claws 100a and 100b.

  During this time, the second spindle 126 is separated from the placement board 122, and then the placement board 122 is separated from the first spindle 124. Immediately after the ring 12 is obtained, the holding member with ring 20 b is displaced integrally with the mounting board 122 and separated from the first spindle 124.

  Next, as shown in FIG. 10, the turning arm 104 turns about 90 ° from the vertically upward direction to the horizontal direction. Following this, the holding claws 100a and 100b pivot together with the holding member 20b with the ring, and as a result, the holding member 20b with the ring is changed from the lying position to the standing position. During this time, the first elevating arm 110 and the second elevating arm 112 are displaced on the guide rail 106 so that the empty first hand 114 is positioned to face the mounting board 122.

  Next, the swing arm 104 is slightly extended. As a result, the holding member with ring 20b approaches the first projecting tip 72 while being held by the holding claws 100a and 100b, and the first tapered diameter-reduced portion 24 is inserted into the first support hole 78. At this time, since the first tapered reduced diameter portion 24 passes through the passage hole 84, the holding member with ring 20 b can be easily supported by the first support hole 78.

  Next, the clamping claw 100b is displaced in a direction away from the short side portion of the clamping claw 100a. That is, the holding claws 100a and 100b are opened, and the holding member with ring 20b is released from the restraining force.

  Next, the rotary table 68 is rotated by about 120 ° clockwise. During this time, as shown in FIG. 11, the first elevating arm 110 is lowered, and the holding member 20 b with the ring on the placement board 122 immediately after the ring 12 is obtained is held by the first hand 114. Thereafter, as the first elevating arm 110 is raised, the holding member with ring 20b is raised integrally with the first hand 114 in the lying posture.

  Due to the index rotation, the second projecting tip 74 comes close to the clamping claws 100a and 100b. The holding member 20 covered with the drum 10, that is, the holding member with drum 20a, is already supported in the second support hole 80 of the second protruding tip 74. It goes without saying that the holding member with drum 20a is obtained in the same manner as described above.

  The holding member with drum 20a is also held between the holding claws 100a and 100b in the same manner as described above. At this time, the first elevating arm 110 and the second elevating arm 112 are already delivered from the first projecting tip 72, and the holding member with drum 20 a held by the second hand 116 faces the mounting board 122. The guide rail 106 is displaced so that the position is reached.

  Then, after the revolving arm 104 is slightly contracted (retracted), the revolving arm 104 is revolved by about 90 ° from the horizontal direction to the vertically upward direction. At the same time, the second lifting / lowering arm 112 is lowered, and the holding member with drum 20 a held by the second hand 116 is transferred to the mounting board 122. That is, it becomes the same state as FIG. Thereafter, this cycle is repeated.

  Here, the holding member 20b with the ring supported by the first projecting tip 72 is positioned close to the second conveyor belt 58 along with the index rotation. Then, the second chuck claws 64a and 64b descend under the action of the third displacement cylinder. The second chuck claws 64a, 64b are synchronously displaced so as to approach each other under the action of the second opening / closing cylinder after surrounding the ring holding member 20b. By this displacement, the ring 12 is gripped by the second chuck claws 64a and 64b.

  Next, the second lower rod 91 approaches the first tapered reduced diameter portion 24, and the second upper rod 92 approaches the second tapered reduced diameter portion 26. As a result, as shown in FIG. 5, the first tapered reduced diameter portion 24 and the second tapered reduced diameter portion 26 enter the reduced diameter cups 98c, 98d, respectively, and the tapered portions 99c, 99d The tapered reduced diameter portion 24 and the second tapered reduced diameter portion 26 are engaged. As a result, the first tapered reduced diameter portion 24 and the second tapered reduced diameter portion 26 are tightened inward in the diameter direction.

  Due to the above-described engagement, the holding member 20 is slightly reduced in diameter. Since the ring 12 is held by the second chuck claws 64a and 64b, the diameter before the holding member 20 is reduced in diameter is substantially maintained. Accordingly, the side wall of the holding member 20 is separated from the inner peripheral surface of the ring 12. That is, the ring 12 is released from the holding member 20. Thereafter, the first lower rod 89 and the first upper rod 90 retreat in a direction away from the ring holding member 20b.

  Next, the second chuck claws 64a and 64b rise under the action of the third displacement cylinder. Thereby, the ring 12 is detached from the holding member 20. In other words, the ring 12 and the holding member 20 are separated. Since the side wall of the holding member 20 is already separated from the inner peripheral surface of the ring 12, it is avoided that the inner peripheral surface of the ring 12 is damaged.

  During this separation, the holding member with ring 20b is in a standing posture. Therefore, even if spatter, which is a solidified material of the drum 10 melted by the laser beam L irradiation, adheres in each groove of the holding member 20, it is difficult for the spatter to move to the inner peripheral surface of the ring 12. . Therefore, it is possible to prevent the quality of the ring 12 from being deteriorated due to sputtering. Further, even if spatter adheres to the drum 10, it is difficult for the spatter to move to the holding member 20.

  Thereafter, the rod constituting the fourth displacement cylinder extends, whereby the second chuck claws 64 a and 64 b are displaced toward the second conveyor belt 58. Of course, the ring 12 ascends and displaces integrally with the second chuck claws 64a and 64b.

  The second chuck claws 64a and 64b are lowered again under the action of the third displacement cylinder. As a result, the second chuck claws 64a and 64b and the ring 12 are positioned on the second conveyor belt 58. Thereafter, the second chuck claws 64a and 64b are opened by the second chuck claws 64a and 64b being displaced synchronously so as to be separated from each other under the action of the second opening / closing cylinder. As a result, the ring 12 is released. The ring 12 is sequentially carried out by the circumference of the second conveyor belt 58.

  On the other hand, the holding member 20 from which the ring 12 is separated remains on the first projecting tip 72. Sputters generated by the cutting of the drum 10 by the laser beam L adhere to the grooves of the holding member 20. The used holding member 20 is transferred to the cleaning unit 46 in order to remove the spatter.

  That is, the rotating shaft 88 is urged to rotate, the first payout arm 86 holds the holding member 20 supported by the first projecting tip 72, and the second payout arm 87 is cleaned by the cleaning unit 46. The holding member 20 is held. When the rotating shaft 88 further rotates, the holding member 20 held by the first payout arm 86 is transferred to the cleaning unit 46, and the new holding member 20 held by the second payout arm 87 is moved to the first projecting tip portion. 72. As described above, since the first payout arm 86 and the second payout arm 87 are separated from each other by approximately 180 °, these transfer operations are performed simultaneously.

  When the holding member 20 supported by the first projecting tip 72 is paid out to the cleaning part 46 by the first paying arm 86, the first tapered reduced diameter part 24 passes through the passage hole 84. Similarly, when the new cleaned holding member 20 is paid out to the first projecting tip 72, the first tapered reduced diameter portion 24 of the new holding member 20 also passes through the passage hole 84.

  A predetermined cleaning operation is performed on the holding member 20 transferred to the cleaning unit 46. While the above operation is being performed, the rotary table 68 is rotated by an index of about 120 ° clockwise, and the first projecting tip 72 is positioned close to the first conveyor belt 56. Next, the drum 10 is put on the new holding member 20 supported by the first projecting tip 72 and close to the first conveyor belt 56 in the same manner as described above. That is, a new holding member with drum 20a is formed.

  Even if spatter remains on the cleaned holding member 20, the process of covering the drum 10 is performed with the holding member 20 in an upright posture. For this reason, it is difficult for the spatter to move to the inner peripheral surface of the drum 10. Therefore, it is possible to avoid the occurrence of indentation caused by spattering between the side wall of the holding member 20 and the inner peripheral surface of the drum 10 during the above-described diameter expansion by the nuts 94a and 94b. it can.

  Further, the holding member with drum 20 a supported by the second protruding tip 74 is held by the second hand 116 of the second lifting arm 112. Further, the ring 12 is removed from the holding member 20 in accordance with the above with respect to the holding member with ring 20b supported by the third projecting tip 76.

  As described above, according to the present embodiment, a plurality of holding members 20 are used to hold the drum 10 (form the holding member with drum 20a), change the posture of the holding member with drum 20a, and to the cutting device 120. Transport of the holding member 20b with the ring holding the ring 12 obtained by cutting the drum 10 from the cutting device 120, changing the posture of the holding member 20b with the ring, separating the ring 12 and the holding member 20, and the ring The unloading of 12 and the transfer of the holding member 20 to the cleaning unit 46 can be carried out continuously. That is, it is possible to simultaneously perform the cutting work when performing some work.

  For this reason, the ring 12 can be produced efficiently. In other words, the production efficiency of the ring 12 can be improved.

  In addition, the obtained ring 12 is of high quality because the occurrence of scratches on the inner peripheral surface is suppressed. That is, the high-quality ring 12 can be obtained with a high yield by setting the covering of the drum 10 and the detachment of the ring 12 in an upright posture.

  The present invention is not particularly limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

  For example, the number of lifting arms constituting the transfer unit 50 may be one.

DESCRIPTION OF SYMBOLS 10 ... Drum 12 ... Ring 20 ... Holding member 20a ... Drum holding member 20b ... Holding member with ring 24 ... 1st taper-shaped diameter-reduced part 26 ... 2nd taper-shaped diameter-reduced part 28 ... Insertion hole 29a ... 1st internal taper Part 29b ... Second internal taper part 34 ... Circumferential groove 40 ... Ring manufacturing device 42 ... Carry-in / out part 44 ... Send-out part 46 ... Cleaning part 48 ... Posture changing part 50 ... Transfer part 52 ... Cutting part 56 ... First conveyor belt 58 ... second conveyor belts 60a, 60b ... first chuck pawls 64a, 64b ... second chuck pawls 68 ... rotary table 72 ... first projecting tip 74 ... second projecting tip 76 ... third projecting tip 78 ... first Support hole 80 ... second support hole 82 ... third support hole 84 ... passing hole 86 ... first payout arm 87 ... second payout arm 89 ... first lower rod 90 ... first upper rod 91 Second lower rod 92 ... Second upper rods 98a to 98d ... Diameter reduction cups 99a to 99d ... Tapered portions 100a and 100b ... Clamping claws 102a and 102b ... Engaging projections 104 ... Swiveling arm 110 ... First lifting arm 112 ... First 2 Lifting arm 114 ... 1st hand 116 ... 2nd hand 120 ... Cutting device 122 ... Mounting board 124 ... 1st spindle 126 ... 2nd spindle 128 ... Laser beam irradiation part L ... Laser beam

Claims (7)

In a ring manufacturing apparatus for obtaining a ring by cutting a drum made of a metal cylindrical body while being held by a holding member made of a hollow body,
First conveying means for conveying the drum in a standing posture whose height direction is oriented in the vertical direction to a standby position of the holding member that is a standing posture in which the height direction is oriented in the vertical direction;
First gripping means for gripping the drum and passing the drum through the holding member at the standby position to form a holding member with a drum;
A delivery mechanism including a rotary table disposed on the standby position, on which the holding member with drum and the holding member with ring that holds the ring obtained by cutting are placed;
A posture changing means for changing the holding member with drum sent out from the rotary table to a recumbent posture whose height direction is oriented in the horizontal direction, or changing the holding member with a ring from a recumbent posture to a standing posture. When,
A second gripping means for gripping the holding member with a drum or the holding member with a ring in a lying position;
A cutting mechanism for cutting the drum of the holding member with the drum in a recumbent posture to obtain the ring;
Third gripping means for gripping the ring from the holding member with the ring, which is changed to the standing posture by the posture changing means after being transported by the second gripping means, and is waiting on the rotary table, and separating from the holding member. When,
Second conveying means for receiving and conveying the ring from the third gripping means;
With
The first gripping means, the second gripping means, and the third gripping means are individually raised or lowered under the action of the first lifting mechanism, the second lifting mechanism, and the third lifting mechanism, respectively. Ring manufacturing equipment. The ring manufacturing apparatus according to claim 1, wherein the holding member has tapered reduced diameter portions at both ends in the height direction,
A first diameter reducing means for reducing the diameter of the holding member by tightening the tapered diameter-reducing portion in a diametrical direction when passing the holding member on the rotary table through the drum;
A second diameter reducing means for reducing the diameter of the holding member by tightening the tapered diameter-reducing portion inward in the diameter direction when the ring is detached from the holding member with the ring on the rotary table;
The ring manufacturing apparatus further comprising:   3. The ring manufacturing apparatus according to claim 1, wherein a taper portion is formed inside the holding member, and the cutting mechanism has a spindle that engages with the taper portion.   The ring manufacturing apparatus according to any one of claims 1 to 3, wherein the posture changing means includes a clamping claw provided with a tapered portion that presses the vicinity of the opening at the end of the holding member. Ring manufacturing equipment.   The ring manufacturing apparatus according to any one of claims 1 to 4, wherein the second gripping means has a plurality of gripping portions.   In the ring manufacturing apparatus according to any one of claims 1 to 5, a support hole for inserting a part of the holding member into the rotary table, and a side surface of the rotary table that is connected to the support hole. A ring manufacturing apparatus, wherein an opening is formed.   The ring manufacturing apparatus according to any one of claims 1 to 6, further comprising a cleaning unit for cleaning the holding member from which the ring is separated.

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