WO2011043221A1

WO2011043221A1 - Rotational positioning device

Info

Publication number: WO2011043221A1
Application number: PCT/JP2010/066769
Authority: WO
Inventors: 克典福岡; 良典正岡
Original assignee: グンゼ株式会社
Priority date: 2009-10-07
Filing date: 2010-09-28
Publication date: 2011-04-14
Also published as: JP5597640B2; CN102470993B; CN102470993A; TW201124320A; JPWO2011043221A1; KR20120081028A

Abstract

Disclosed is a rotational positioning device which is capable of eliminating the idling of a driving roller to perform accurate rotational positioning. Specifically disclosed is a rotational positioning device (10) which is provided with a gripping means (18) for gripping and transporting workpieces (14) to the transporting direction of a conveyor (12), rotating means (20) for rotating the workpieces (14) around a vertical axis (C) by rotating driving rollers (46) brought into contact with the gripped workpieces (14), a stop means (22) for stopping the rotated workpieces (14) when the rotated workpieces (14) face toward a certain direction, and cleaning means (60) for cleaning the driving rollers (46), and which is configured in such a manner that the rotating means (20) and the stop means (22) perform the rotational positioning of the workpieces (14) when the gripping means (18) grips and transports the workpieces (14) to the transporting direction of the conveyor (12).

Description

Rotary positioning device

The present invention relates to a rotary positioning device that rotates a workpiece such as a container arranged at a constant interval and conveyed by a conveyor around a vertical central axis in a predetermined direction.

2. Description of the Related Art Conventionally, a rotation positioning device has been devised that rotates a plurality of workpieces arranged on a conveyor at regular intervals and rotates around a vertical rotation axis in a certain direction (for example, Patent Document 1 and Patents). Reference 2). This rotary positioning device is configured to hold a plurality of workpieces arranged at regular intervals with a roller, a rotating unit that rotates the plurality of gripped workpieces around a vertical center axis, and a rotated workpiece that is fixed. And stopping means for stopping when the vehicle is turned. In this rotational positioning device, a driving roller that is rotated in contact with the workpiece is used as a rotating means for rotating the workpiece around the vertical center axis.

However, when a container filled with low-temperature milk or the like is a workpiece, the surface of the workpiece may condense, moisture may adhere to the driving roller, and the driving roller may idle. In addition, when a rotary positioning device is used to print by irradiating the printing portion of the container with laser, ink powder generated by laser irradiation may adhere and the drive roller may idle. For this reason, accurate rotational positioning may not be performed.

JP 2008-143691 A JP 2006-321569 A

An object of the present invention is to provide a rotational positioning device that can perform accurate rotational positioning without the idling of the driving roller.

The rotational positioning device of the present invention is a rotational positioning device that rotates a workpiece, which is arranged at regular intervals and conveyed by a conveyor, around a vertical center axis and directs the workpiece in a certain direction, and grips the workpiece to convey the conveyor. Gripping means for feeding in the conveying direction, rotating means for rotating the driving roller brought into contact with the gripped work to rotate the work around the vertical central axis, and the work to be rotated oriented in a certain direction A rotation positioning device comprising: a stopping means for stopping at times, when the gripping means grips the workpiece and sends it in the conveying direction of the conveyor, the rotating means and the stopping means perform rotational positioning of the workpiece, A cleaning means for cleaning the drive roller is provided.

Further, the rotational positioning device of the present invention is characterized in that, in the rotational positioning device, the cleaning means includes an adhesive roller having an adhesive layer around and contacting the drive roller.

Further, the rotational positioning device of the present invention is characterized in that in the rotational positioning device, the position of the adhesive roller in the axial direction can be adjusted.

The rotary positioning device of the present invention is the rotary positioning device, wherein the gripping means grips the workpiece and moves forward, and after the workpiece is sent in the conveying direction of the conveyor, the cleaning device is moved back. Means clean the drive roller.

Further, the rotational positioning device of the present invention is characterized in that, in the rotational positioning device, the cleaning means is an air ejection means for blowing air to the drive roller.

Further, in the rotational positioning device of the present invention, in the rotational positioning device, when the cleaning means rotates the workpiece, air is blown onto a surface of the driving roller that contacts the workpiece, and the deposit on the contacting surface is removed. It is an air ejection means to be removed.

Further, in the rotational positioning device of the present invention, in the rotational positioning device, the stop unit includes a sensor that detects a mark on the outer peripheral surface of the workpiece, and the cleaning unit blows air to the driving roller. It is characterized by comprising air blowing means and other air blowing means for blowing air to the sensor.

Further, the rotational positioning device of the present invention is characterized in that, in the rotational positioning device, the circumferential surface of the driving roller is provided with a groove that is the same or perpendicular to the axial direction of the driving roller.

In the rotational positioning device of the present invention, in the rotational positioning device, the air ejection unit is a unit that blows air downward on a driving roller that rotates about the vertical central axis. And Note that “blowing air downward” means that air is blown directly downward or obliquely downward.

According to the rotational positioning device of the present invention, it is possible to perform accurate rotational positioning by eliminating the idle rotation of the driving roller by removing moisture, ink powder and the like adhering to the driving roller by the cleaning means.

It is a top view which shows the rotational positioning apparatus of this invention. It is a front view which shows the rotational positioning apparatus of FIG. It is a front view which shows the rotational positioning apparatus of FIG. It is a perspective view which shows the cleaning means of the rotational positioning apparatus of FIG. It is a top view which shows other embodiment of the rotation positioning device of this invention. It is a front view which shows the rotational positioning apparatus of FIG. It is a front view which shows the rotational positioning apparatus of FIG. It is a front view which shows other embodiment of the rotation positioning apparatus of this invention. It is a front view which shows other embodiment of the rotation positioning apparatus of this invention. It is a front view which shows other embodiment of the rotation positioning apparatus of this invention.

Next, an embodiment of the rotational positioning device according to the present invention will be described in detail based on the drawings.

1 to 3, reference numeral 10 denotes a rotational positioning device of the present invention, which is a rotational positioning device used for printing by irradiating a printing portion of a work (container) 14 with a laser. The rotational positioning device 10 is a rotational positioning device that rotates the workpieces 14 arranged at regular intervals and conveyed by the conveyor 12 around the vertical central axis C and directs them in a certain direction. The rotary positioning device 10 rotates the gripping means 18 that grips the workpiece 14 and sends it in the conveying direction of the conveyor 12, and the driving roller 46 that is in contact with the gripped workpiece 14 to rotate the workpiece 14 around the vertical center axis C. Rotating means 20 for rotating, stop means 22 for stopping when the rotated work 14 is directed in a certain direction, and cleaning means 60 for cleaning the drive roller 46, and the gripping means 18 grips the work 14. The rotating means 20 and the stopping means 22 are rotational positioning devices that perform rotational positioning of the workpiece 14 when sending in the conveying direction of the conveyor 12.

The conveyor 12 is configured to sequentially convey a plurality of workpieces 14 arranged at regular intervals by a rotating star wheel (not shown) sequentially in the X-axis direction. The work 14 is configured in a substantially cylindrical shape.

The gripping means 18 includes two plates 38 (a) and 38 (b) that can reciprocate in the X-axis direction, and a frame 40 (a) that can reciprocate in the Y-axis direction with respect to the plate 38 (a). And a frame 40 (b) that can slide back and forth in the Y-axis direction with respect to the plate 38 (b). The mechanism for reciprocating the plates 38 (a) and 38 (b) in the X-axis direction and the mechanism for reciprocatingly sliding the frames 40 (a) and 40 (b) in the Y-axis direction are a joint arm or screw mechanism. Etc., not particularly limited. The frame 40 (a) includes six lower rollers 42 (a) that can freely rotate and six upper rollers 44 (a) that can freely rotate, and the frame 40 (b) can freely rotate. These six lower rollers 42 (b) and three drive rollers 46 that are rotated by a rotation drive mechanism (not shown) are configured so that the three workpieces 14 can be gripped.

The rotating means 20 is composed of a driving roller 46 and a rotation driving mechanism (not shown) that drives the driving roller 46 to rotate. The work roller 14 is sandwiched between the upper roller 44 (a) and the driving roller 46 to rotate the driving roller 46. By driving, the workpiece 14 can be rotated around the vertical center axis C in a horizontal plane. Therefore, the drive roller 46 constitutes the gripping means 18 and the rotation means 20.

The stopping means 22 includes a sensor 50 that detects a mark attached to a certain position on the outer peripheral side surface of the workpiece 14 and a control means (not shown) that stops the rotation of the driving roller 46. The rotation control of the drive roller 46 is performed for each workpiece 14. By stopping the rotation of the drive roller 46 and stopping the rotation of the work 14 at the moment when the mark is detected by the sensor 50 or after a certain time has elapsed from the detection, the work 14 can be stopped in a state of being directed in a certain direction. . In addition, the aspect of the sensor 50 is not specifically limited, such as a reflective fiber sensor or a photoelectric sensor.

As shown in FIG. 4, the cleaning means 60 includes an adhesive roller 62 that has an adhesive layer around it and is in contact with the drive roller 46, a support member 64 that supports the adhesive roller 62 so that it can freely rotate, and a support member 64 that moves up and down. It is comprised from the up-and-down moving means 66 to move. The support member 64 can replace the pressure-sensitive adhesive roller 62 to be supported by removing the pressure-sensitive adhesive roller 62 by rotating the support portion 68 at the front end upward. The vertical movement means 66 includes a moving member 70 to which the support member 64 is fixed, a screw rod 72 screwed into the moving member 70, and a drive motor 76 that rotationally drives the screw rod 72 via a belt 74. The screw rod 72 is rotationally driven to move the support member 64 up and down to adjust the position of the adhesive roller 62 in the axial direction. Also, as shown in FIG. 1, three cleaning means 60 are provided corresponding to the three drive rollers 46, and the three cleaning means 60 together with the plates 38 (a) and 38 (b) Reciprocate in the direction. The cleaning unit 60 cleans the driving roller 46 when the gripping unit 18 moves backward after gripping the workpiece 14 and sends the workpiece 14 in the conveying direction of the conveyor 12.

The operation of the rotary positioning device 10 will be described below. The following operation of each means is realized by a control means (not shown).

When the workpiece 14 is positioned by the rotary positioning device 10, when the rotary positioning process including the rotary positioning device 10 is operated, the workpieces 14 are arranged on the conveyor 12 while being arranged at regular intervals by a star wheel 26 (not shown). It is sent to the position shown in FIG. From the state shown in FIG. 1, when the frame 40 (a) moves in the negative Y-axis direction and the frame 40 (b) moves in the positive Y-axis direction, as shown in FIG. 3, the lower roller 42 (a) And 42 (b), the upper roller 44 (a), and the driving roller 46 hold the three workpieces 14. With the workpiece 14 gripped in this way, the frames 40 (a) and 40 (b) move in the X-axis positive direction, and the three gripped workpieces 14 move in the X-axis positive direction. When the three workpieces 14 are moving in the positive direction of the X axis, the drive roller 46 is driven to rotate, so that the workpiece 14 is rotated around the vertical central axis C on the support rollers 48 (a) and 48 (b). Rotate to. Next, the rotation of the workpiece 14 is stopped at the moment when the sensor 50 detects the mark on the outer peripheral side surface of the workpiece 14 or after a certain time has elapsed from the detection, and the three workpieces 14 are positioned in the same fixed direction.

When the frames 40 (a) and 40 (b) move a certain distance in the X-axis positive direction, the frame 40 (a) moves in the Y-axis positive direction and the frame 40 (b) moves in the Y-axis negative direction. , The three positioned workpieces 14 are released on the conveyor 12. The released work 14 is sent to a subsequent process on the conveyor 12, and a printing portion at a fixed position is irradiated with a laser to print a manufacturing date and a lot number.

When the frame 40 (a) moves in the Y-axis positive direction and the frame 40 (b) moves in the Y-axis negative direction and the work 14 is released, the adhesive roller 62 is moved to the driving roller 46 as shown in FIG. In close contact. In a state where the adhesive roller 62 is in close contact with the driving roller 46, the frames 40 (a) and 40 (b) move in the negative direction of the X axis in order to grip the next three workpieces 14. When the frames 40 (a) and 40 (b) are moving in the X-axis negative direction, the adhesive roller 62 is simultaneously moved in the X-axis negative direction at the same speed, and the adhesion state of the adhesive roller 62 to the drive roller 46 is Secured. When the adhesive roller 62 is in close contact with the driving roller 46, the driving roller 46 is driven to rotate, whereby the driving roller 46 is cleaned. For example, even if ink powder generated by laser irradiation adheres to the driving roller 46, the ink powder is wiped and cleaned by the adhesive roller 62.

Here, by wiping the ink powder adhering to the driving roller 46 with the adhesive roller 62, the ink powder adheres to the portion of the adhesive roller 62 that is in close contact with the driving roller 46, and the cleaning effect of the adhesive roller 62 is reduced. To go. Therefore, by moving the adhesive roller 62 up and down by a predetermined distance for every predetermined number of workpieces 14 or for every predetermined time, and changing the position of the portion of the adhesive roller 62 that is in close contact with the drive roller 46, The cleaning effect can be maintained. When ink powder adheres to the entire adhesive roller 62, the support 68 is rotated upward to remove and replace the adhesive roller 62.

According to such a rotation positioning device 10, when the frames 40 (a) and 40 (b) move in the negative direction of the X axis in order to grip the next three workpieces 14, the adhesive roller 62 is driven by the driving roller. Since the drive roller 46 can be cleaned by being in close contact with the drive 46, the rotation of the drive roller 46 can be eliminated and accurate rotational positioning can be performed.

In the rotary positioning device 10, the workpiece 14 is gripped by the gripping means 18, rotated and positioned while moving forward in the conveyance direction of the workpiece 14, and then moved back in the direction opposite to the conveyance direction of the workpiece 14. The drive roller 46 can be cleaned by using the time to return the gripping means 18 to return. Further, in order to release the workpiece 14 from the gripping means 18, the adhesive roller 62 is moved by utilizing the operation in which the frame 40 (a) moves in the Y axis positive direction and the frame 40 (b) moves in the Y axis negative direction. It can adhere to the driving roller 46. For this reason, rotational positioning can be performed quickly while cleaning without causing time loss for cleaning.

Further, according to the rotational positioning device 10, when the three workpieces 14 are rotated and positioned, the adhesive roller 62 can be separated from the driving roller 46 and the driving roller 46 can be rotated smoothly. For this reason, the workpiece | work 14 can also be rotated smoothly and the rotation positioning of the workpiece | work 14 can be performed rapidly and reliably.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment.

For example, as shown in FIGS. 5 to 7, the rotary positioning device 10 includes three floating means 16 for floating the three workpieces 14 on the conveyor 12, and the workpiece 14 covers the container 28 with a lid 30. The workpiece 14 may be rotationally positioned on the conveyor 12 with the front surface side of the lid 30 facing downward. The configuration other than the levitation means 16 is the same as that of the rotational positioning device 10 shown in FIGS.

The levitation means 16 includes a suction pad (suction means) 32 that attracts the upper surface of the workpiece 14 and a cylinder (reciprocating means) 34 that raises or lowers the suction pad 32. The suction pad 32 can be sucked onto the upper surface of the workpiece 14 by operating the vacuum pump 36.

In the gripping means 18, the frame 40 (a) includes three support rollers 48 (a), and the frame 40 (b) includes three support rollers 48 (b). It is comprised so that the workpiece | work 14 which moved below with the pressing force which 14 receives can be received.

The operation of the rotary positioning device 10 shown in FIGS. 5 to 7 will be described below. The following operation of each means is realized by a control means (not shown).

When positioning the workpiece 14 with the rotary positioning device 10 shown in FIGS. 5 to 7, when the rotational positioning process including the rotary positioning device 10 is operated, a plurality of workpieces 14 are arranged at regular intervals by a star wheel 26 (not shown). While being done, it is sent to the position shown in FIG. From the state shown in FIG. 5, the cylinder 34 is operated, the suction pad 32 is brought into close contact with the upper surface of the work 14, the vacuum pump 36 is operated, and the work 14 is sucked onto the suction pad 32. Is activated and the suction pad 32 is raised, so that the work 14 is lifted above the conveyor 12. When the workpiece 14 is lifted above the conveyor 12, the frame 40 (a) is moved in the negative Y-axis direction and simultaneously the frame 40 (b) is moved in the positive Y-axis direction, as shown in FIG. Thus, the work 14 is gripped by the lower rollers 42 (a) and 42 (b), the upper roller 44 (a), and the driving roller 46, and the work 14 is placed on the support rollers 48 (a) and 48 (b). Will be located. The drive roller 46 is separated from the adhesive roller 62 by moving the frame 40 (b) in the positive Y-axis direction.

With the workpiece 14 thus supported on the support rollers 48 (a) and 48 (b), the plates 38 (a) and 38 (b) are moved in the positive direction of the X-axis, thereby providing three pieces. The workpiece 14 moves in the positive direction of the X axis. At this time, the suction by the suction pad 32 is released, and the drive roller 46 is driven to rotate, so that the workpiece 14 is rotated around the vertical center axis C on the support rollers 48 (a) and 48 (b). Next, the rotation of the workpiece 14 is stopped at the moment when the sensor 50 detects the mark on the outer peripheral side surface of the workpiece 14 or after a certain time has elapsed from the detection, and the three workpieces 14 are positioned in the same fixed direction.

When the frame 40 (a) moves in the Y-axis positive direction and the frame 40 (b) moves in the Y-axis negative direction and the work 14 is released, the adhesive roller 62 is moved to the drive roller 46 as shown in FIG. In close contact. In a state where the adhesive roller 62 is in close contact with the driving roller 46, the frames 40 (a) and 40 (b) move in the negative direction of the X axis in order to grip the next three workpieces 14. When the frames 40 (a) and 40 (b) are moving in the X-axis negative direction, the adhesive roller 62 is simultaneously moved in the X-axis negative direction at the same speed, and the adhesion state of the adhesive roller 62 to the drive roller 46 is Secured. When the adhesive roller 62 is in close contact with the driving roller 46, the driving roller 46 is driven to rotate, whereby the driving roller 46 is cleaned. Therefore, also in the rotary positioning device 10 shown in FIGS. 5 to 7, when the gripping means 18 grips the work 14 and moves forward, and after the work 14 is sent in the conveying direction of the conveyor 12, it moves backward. The driving roller 46 can be cleaned by the adhesive roller 62.

Next, in the rotary positioning device 10, the cleaning means is not limited to the adhesive roller 62. For example, as shown in FIG. 8, when the work 14 is a container filled with low-temperature milk or the like and the surface is condensed, an air nozzle that removes moisture (attachment) attached to the drive roller 46 as a cleaning unit. (Air ejecting means) 80 and an air nozzle (air ejecting means) 82 for removing moisture (attached matter) scattered from the driving roller 46 and the like and attached to the sensor 50 may be provided. One air nozzle 80 is provided for each drive roller 46, and one air nozzle 82 is provided for each sensor 50. These

air nozzles

80 and 82 move in the negative direction of the X axis at the same speed as the plates 38 (a) and 38 (b) in the same manner as the adhesive roller 62 described above.

As shown in FIG. 8, the air nozzle 80 moves against the outer circumferential surface of the driving roller 46 that contacts the workpiece 14 when the gripping means 18 grips the workpiece 14 and moves forward, and the driving roller 46 rotates the workpiece 14. Then, air is blown from the top to the bottom, and moisture attached to the outer peripheral surface of the drive roller 46 is surely blown down. For this reason, the blown-off moisture is not scattered and adheres to the drive roller 46 or the work 14, and the rotational rotation of the drive roller 46 can be eliminated and accurate rotation positioning can be performed. Moreover, the air nozzle 80 blows air at the time of rotational positioning for rotating the workpiece 14, and does not blow air at the time of non-rotating positioning. For this reason, air can be blown only when necessary, and noise and cost due to air blowing can be minimized. Note that the air nozzle 80 blows and stops air by a control means (not shown).

Here, in order to perform accurate positioning, a method of removing moisture on the workpiece surface by blowing air on the workpiece itself on the conveyor immediately before the rotary positioning device is also conceivable. For example, air is applied to the cylindrical workpiece from the lateral direction. In the case of spraying water, it is not possible to remove the moisture only by moving the moisture to the back side. Also, even if air is blown to the workpiece surface (contact surface with the driving roller) during rotation positioning, the moisture on the contact surface blown with air moves from the contact surface to the workpiece surface and then moves to the contact surface. In some cases, the moisture may be removed from the contact surface with the driving roller in the workpiece surface. On the other hand, a method of dropping the water adhering to the work 14 by blowing air on the work 14 from the top to the bottom is conceivable. However, the mechanical restriction that the actual rotational positioning device 10 interferes with other parts. Therefore, it is difficult to provide means for blowing air from above to the work 14. On the other hand, in the case of this invention, it is set as the structure which blows air from the top to the drive roller 46 which contacts and rotates the workpiece | work 14, By avoiding the said mechanical regulation, the drive roller 46, the workpiece | work 14, Thus, moisture can be reliably removed from the contact portion, and the rotation of the drive roller 46 can be eliminated to perform accurate rotational positioning.

The circumferential surface of the drive roller 46 may be provided with grooves that are the same or perpendicular to the axial direction of the drive roller 46. By providing this groove, moisture adhering to the drive roller 46 can be released. Further, by providing the air nozzle 82, moisture attached to the sensor 50 is removed, so that the sensor 50 cannot detect the mark on the outer peripheral side surface of the workpiece 14 and does not transmit a detection signal due to moisture. Further, in order to prevent the water removed from the driving roller 46 or the sensor 50 from being scattered by blowing air from the top to the bottom, a suction means for sucking the removed water is provided below the driving roller 46 or the sensor 50. It may be provided.

Next, the shape of the workpiece 14 that is rotationally positioned by the rotational positioning device 10 of the present invention is not particularly limited to the above. Moreover, the direction of the workpiece | work 14 mounted on the conveyor 12 is not limited to the direction turned upside down as mentioned above. For example, the rotary positioning device 10 that erects the workpiece 14 having a shape as shown in FIG. 9 on the conveyor 12 may be used. Also with this rotary positioning device 10, when the gripping means 18 grips the work 14 and moves forward, and after the work 14 is sent in the conveying direction of the conveyor 12, the drive roller 46 is cleaned by the air nozzle 80 when returning. can do.

Further, the air nozzle (air ejection means) 80 of the rotational positioning device 10 may be configured such that the inner diameter thereof is narrowed in the radial direction of the drive roller 46 from the throat portion (intermediate portion) 94 to the air ejection port 90. For example, as shown in FIG. 10, the shape of the air outlet 90 is changed to a shape in which the vicinity of the air outlet 90 is crushed, that is, an ellipse or a long hole whose major axis or longitudinal direction is along the circumferential direction of the drive roller 46. It may be configured. In FIG. 10, the inner diameter of the throat 94 is D1, and the inner diameter of the air outlet 90 is D2. Further, the shape of the air jet 90 is an ellipse or a long hole whose inner diameter is narrowed in the radial direction of the driving roller 46 from the throat 94 to the air jet 90, so that the air jetted from the air jet 90 It is possible to reliably remove the moisture adhering to the drive roller 46 by blowing up the flow rate. The gap g between the air outlet 90 and the driving roller 46 is such that the air ejected from the air nozzle 80 can be blown as strongly as possible on the outer peripheral surface 92 of the driving roller 46 and the air nozzle 80 does not interfere with the driving roller 46. That is, about 2 to 3 mm is preferable.

As mentioned above, although embodiment of this invention was described based on drawing, this invention is not limited to what was illustrated. In addition, the technical scope of the present invention includes embodiments in which various improvements, modifications, and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Moreover, you may implement with the form which substituted any invention specific matter to the other technique within the range which the same effect | action or effect produces.

According to the rotational positioning device of the present invention, it is possible to perform accurate rotational positioning without the idling of the driving roller. For this reason, it can utilize widely for the rotation positioning operation | work of a workpiece | work.

10: Rotating positioning device 12: Conveyor 14: Workpiece 16: Floating means 18: Grasping means 20: Rotating means 22: Stopping means 28: Container 30: Lid 32: Suction pad 34: Cylinder 36: Vacuum pumps 38 (a), 38 (B): Plates 40 (a), 40 (b): Frames 42 (a), 42 (b): Lower roller 44 (a): Upper roller 46: Drive rollers 48 (a), 48 (b): Support Roller 50: Sensor 60: Cleaning means 62: Adhesive roller 64: Support member 66: Vertical movement means 80, 82: Air nozzle (air ejection means)

Claims

It is a rotary positioning device that rotates the workpieces that are arranged at regular intervals and conveyed by the conveyor around the vertical central axis and directs them in a certain direction.
Gripping means for gripping the workpiece and sending it in the transport direction of the conveyor;
A rotating means for rotating the drive roller brought into contact with the gripped work to rotate the work around a vertical central axis;
Stopping means for stopping when the rotated work is directed in a certain direction;
In the rotary positioning device with
When the gripping means grips the workpiece and sends it in the conveying direction of the conveyor, the rotating means and the stopping means perform rotational positioning of the workpiece,
A rotary positioning device comprising a cleaning means for cleaning the drive roller.
The rotational positioning device according to claim 1, wherein the cleaning unit includes an adhesive roller having an adhesive layer around and contacting the driving roller.
The rotational positioning device according to claim 2, wherein the position of the adhesive roller in the axial direction can be adjusted.
The said holding | grip means grips the said workpiece | work, moves forward, and after the said workpiece | work is sent to the conveyance direction of the said conveyor, the said cleaning means cleans the said drive roller when returning. Rotary positioning device.
The said holding | grip means grips the said workpiece | work and moves forward, The said cleaning means cleans the said drive roller when returning after the said workpiece | work is sent to the conveyance direction of the said conveyor. Rotary positioning device.
The rotational positioning device according to claim 1, wherein the cleaning unit is an air ejection unit that blows air onto the drive roller.
The rotary positioning device according to claim 6, wherein the cleaning unit is an air ejection unit that blows air onto a surface of the driving roller that contacts the workpiece when the workpiece rotates, and removes deposits on the contacting surface. .
The stop means includes a sensor for detecting a mark on the outer peripheral surface of the workpiece, and the cleaning means includes the air ejection means for blowing air to the drive roller and other air ejection means for blowing air to the sensor. The rotation positioning apparatus according to claim 6, comprising:
The rotational positioning device according to claim 6, wherein a groove in the circumferential direction of the driving roller is provided with a groove that is the same or perpendicular to the axial direction of the driving roller.
The rotary positioning device according to claim 6, wherein the air jetting unit is a unit that blows air downward to the driving roller that rotates about the vertical central axis.
The rotational positioning device according to claim 7, wherein the air ejection unit is a unit that blows air downward on the driving roller that rotates about the vertical center axis.