JP2013173214A - Work conveyor and work conveying method - Google Patents

Work conveyor and work conveying method Download PDF

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Publication number
JP2013173214A
JP2013173214A JP2012040633A JP2012040633A JP2013173214A JP 2013173214 A JP2013173214 A JP 2013173214A JP 2012040633 A JP2012040633 A JP 2012040633A JP 2012040633 A JP2012040633 A JP 2012040633A JP 2013173214 A JP2013173214 A JP 2013173214A
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Japan
Prior art keywords
belt
fitting
carriage
conveyance
downstream
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Pending
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JP2012040633A
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Japanese (ja)
Inventor
Muneya Aizawa
宗弥 相澤
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Toyota Motor East Japan Inc
トヨタ自動車東日本株式会社
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Priority to JP2012040633A priority Critical patent/JP2013173214A/en
Publication of JP2013173214A publication Critical patent/JP2013173214A/en
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Abstract

PROBLEM TO BE SOLVED: To speedily and accurately convey an article to be conveyed (for example, a work for constituting an vehicle body) by simple equipment.SOLUTION: A bogie receiving part 136 of an upstream-side belt conveyor 131R in a state of being fit with a bracket 210 of a bogie 201 is moved up to a transit position CP by controlling the upstream-side belt conveyor 131R. Next, the bracket 210 of the bogie 201 locked by a lock device 181 is pushed up by controlling a fitting body push-up device 161 after locking the bogie 201 having the bracket 210 which is fit to the bogie receiving part 136 positioned in the transit position CP. Next, the bogie receiving part 136 of the upstream-side belt conveyor 131R is made to retreat from the transit position CP, and the bogie receiving part 136 of a downstream-side belt conveyor 131F is moved up to the transit position CP. Next, the lock of the bogie 201 is released after fitting the bracket 210 to the bogie receiving part 136 of the downstream-side belt conveyor 131F by controlling the fitting body push-up device 161.

Description

  The present invention relates to a work transfer device for transferring a work, and a work transfer method performed in the work transfer device.
  Patent Document 1 discloses a jig carriage equipped with a set jig capable of holding a side panel in a standing posture from a lateral direction between a set station in a side panel assembly line and a welding station downstream thereof. The side panel is held in an upright position via a clamp member mounted on the lower frame and the upper frame between the welding station and the next work station downstream from the welding station. Install the frame carriage that can be moved back and forth, and allow the side panels to be transferred from the jig carriage to the frame carriage at the welding station, and before delivery from the jig carriage to the frame carriage by the welding robot placed at the welding station. It is described that temporary welding is performed on the side panel and incremental welding is performed on the side panel after delivery. It has been.
In the paragraphs 0011 to 0012 of Patent Document 1, regarding the frame carriage, “the frame carriages 8 1 , 8 2 , and 8 3 have a lower frame 80 that is long in the front-rear direction as the longitudinal direction of the line as shown in FIGS. When, and a longitudinal upper frame 81 in the longitudinal direction. ", and" on the lower frame 80 and upper frame 81, respectively, fixed to the first lower track frame 10 1 and the upper track frame 12 Motors 84 and 85 are mounted as drive sources having pinions 84a and 85a on output shafts that mesh with the racks 10b and 12b, and the lower frame 80 and the upper frame 81 are mutually switched by synchronous control of both motors 84 and 85. It is said that it is self-propelled in the longitudinal direction of the line in synchronism ”.
Paragraph 0016 of Patent Document 1 describes the jig carriage as follows: “Each jig carriage 9 1 , 9 2 has the first and second lower track frames 10 1 , 10 as shown in FIGS. A plurality of side panel clamp members (not shown) are mounted on a carriage main body 90 that is movably supported by linear guides 90a on both sides of the lower surface of the guide rails 10c, 10c fixed to the upper surface of 2 . side panels W are configured to that formed by mounting the setting jig 91 can be held in an upright orientation of the respective inward from the side. then, to one end of the carriage body 90, the first lower track frame 10 1 A motor 92 having a pinion 92a on the output shaft that meshes with the rack 10d fixed to the inner surface is attached, and each jig carriage 9 1 , 9 2 is moved in the longitudinal direction of the line along the guide rail 10c by the operation of the motor 92. Run There is a description that has been to so that. ".
JP 2002-293277 A
  In the technique described in Patent Document 1, a motor is provided for each cart (frame cart, jig cart), and these motors are driven and attached to the motor shaft and meshed with the racks (10b, 12b, 10d). As the pinion (84a, 85a, 92a, etc.) rotates around the axis of the motor shaft, the carriage (frame carriage, jig carriage) advances, and the side panels mounted on the carriage are successively delivered.
  Here, consider transporting a carriage carrying a transported object for a long distance. When trying to convey a carriage by combining a rack that is fixedly arranged and a pinion that is rotated by a motor as in the technique described in Patent Document 1, it is not possible to provide a long rack from the viewpoint of manufacturing equipment and accuracy. Since it is necessary to transfer to another cart, and a motor must be provided for each cart, the capital investment becomes enormous. In addition, using a rack and pinion mechanism is expensive to install, causes contamination such as grease splashing, difficult to increase production accuracy including installation and adjustment, and maintenance such as grease up is very difficult. The problem of being, etc. arises.
  It is also conceivable that a friction roller is brought into contact with an object to be transported mounted on a carriage without using a rack and pinion mechanism, and the friction roller is rotated by a motor drive or the like to be transported. In this case, a slip occurs between the friction roller and the object to be conveyed, and the carriage may come into contact with another carriage positioned before and after the conveyance path defined by the friction roller. In addition, when a friction roller is used, slipping occurs as described above, which makes it difficult to increase the conveyance speed, and it is necessary to periodically replace the worn friction roller. There are also problems such as the need for a large number of sensors for detection because the position of an object is not known.
  The present invention has been made in view of the above points, and an object of the present invention is to convey an object to be conveyed with high speed and high accuracy with simple equipment.
  The workpiece conveying device of the present invention is a belt that can be mounted with a carriage for conveying a workpiece and extends along a rail that defines the conveying direction of the carriage, a drive unit that reciprocates the belt in the conveying direction, A belt transport device arranged in the transport direction and locking the movement of the cart in the transport direction. A locking device, and a fitting body push-up device that pushes up the fitting body of the carriage locked by the locking portion, and one end of either the downstream side or the upstream side in the conveying direction of the belt of the one belt conveying device And the other end on the downstream side and the upstream side in the conveyance direction of the belt of another belt conveyance device adjacent to the belt conveyance device are aligned in the width direction of the rail.
  The workpiece conveyance method of the present invention is a workpiece conveyance method performed in the workpiece conveyance device described above, and this belt conveyance in a state in which the driving unit of one belt conveyance device is controlled and the fitting body of the carriage is fitted. A step of moving the fitting portion of the device to the connecting position where the end portions of the belt are aligned in the width direction of the rail; and the fitting portion that controls the locking device and is located at the connecting position is fitted. Locking the carriage having the mating fitting body, then controlling the fitting body push-up device, pushing up the carriage fitting body locked by the locking device, and controlling the drive unit of the belt conveying device Then, the fitting portion of the belt conveyance device is retracted from the connecting position, and the belt conveyance device is controlled by controlling a driving unit of another belt conveyance device adjacent to the downstream side in the conveyance direction with respect to the belt conveyance device. Device mating Controlling the fitting body push-up device, fitting the fitting body of the carriage to the fitting portion of the another belt conveying device, and subsequently controlling the locking device, Releasing the lock of the carriage.
  According to the present invention, the carriage can be connected to a different belt conveyance device by using the fitting body push-up device and the lock device, and the object to be conveyed can be conveyed with high speed and high accuracy with simple equipment. .
It is a perspective view of a workpiece conveyance apparatus. It is a top view of a workpiece conveyance apparatus. It is a perspective view of the workpiece conveyance apparatus which shows a cart separated from a rail. It is a typical front view of a belt conveyance apparatus. It is a schematic diagram of the locking device in a state where the locking projection of the carriage is locked. It is a schematic diagram of the locking device in a state where the lock with respect to the locking projection of the carriage is released. It is a flowchart which shows the flow of operation | movement of each part in a workpiece conveyance apparatus. It is a schematic diagram which shows the motion of the belt conveyance apparatus, fitting body pushing-up apparatus, and trolley | bogie in a transfer position.
  One embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of the workpiece transfer apparatus 101. FIG. 2 is a plan view of the workpiece transfer apparatus 101. FIG. 3 is a perspective view of the workpiece transfer apparatus 101 showing the carriage 201 separated from the rail 102. In FIG. 1, the carriage 201 is omitted.
  The workpiece transfer device 101 is provided with rails 102 (a pair of long rail bodies in parallel) provided along a production line for performing press processing, welding processing, painting processing, and the like on a workpiece (conveyed object) serving as an automobile body. The pallet P on which a work (not shown) can be placed is transported at high speed, high accuracy, and reliably. The workpiece transfer device 101 is provided with respect to the rail 102 on which the carriage 201 can be placed, and includes a plurality of belt transfer devices 131, a fitting body lifting device 161, a lock device 181 and a control panel 301 as a control unit. Have.
  The rail 102 is laid along a production line provided in a factory or the like, and defines a carriage conveyance direction C. In the present embodiment, the rail 102 is supported by a plurality of leg frames 103 arranged along the production line, is located at a position higher than the floor surface F by a predetermined height, and extends substantially horizontally. The rail 102 extends linearly in the present embodiment, but may extend in a curved shape such as an arc. On such a rail 102, wheels 203 (described later) provided on the carriage 201 are placed.
  The belt conveyance device 131 has a belt 135 that reciprocates in the conveyance direction C by a motor 132, and moves the carriage 201 placed on the rail 102 by the belt 135. A plurality of belt conveyance devices 131 are arranged in the workpiece conveyance device 101 so as to be aligned in the conveyance direction C, and the belt 135 of any of the belt conveyance devices 131 extends in the direction in which the rail 102 extends (conveyance direction C). An end portion 135A of the belt 135 (not indicated by reference numerals in FIGS. 1 and 3) is also aligned with the end portion 135A of the belt 135 of another belt conveyance device 131 in the width direction W of the rail 102. A fitting body push-up device 161 is disposed between the end portions 135A of the belt 135 of the belt conveyance device 131 arranged in the width direction W. The fitting body push-up device 161 will be described later. When the rail 102 is viewed in the transport direction C, the position at which the fitting body push-up device 161 and the end portions 135A of the pair of belts 135 disposed so as to sandwich the fitting body side by side in the width direction W is a transit position CP (see FIG. 4).
  FIG. 4 is a schematic front view of the belt conveyance device 131. In FIG. 4, the motor 132, the rail 102, the auxiliary frame 104, the leg frame 104A, the bearing 105, and the like are omitted. Please refer to FIG. 3 and FIG. The belt conveying device 131 includes a motor 132, a driving roller 133 attached to the driving shaft 132 </ b> A of the motor 132, a driven roller 134 positioned on the upstream CR side in the conveying direction C with respect to the driving roller 133, and a driving roller 133. And a belt 135 that extends around the conveyance direction C. As the motor 132, a motor that can rotate the drive shaft 132A in either the forward direction RF or the reverse direction RR can be employed. As the motor 132, a motor capable of stopping the rotation of the drive shaft 132A at a predetermined timing or rotating it again can be adopted. The motor 132, the drive shaft 132A, and the drive roller 133 constitute a drive unit 140 for reciprocating the belt in the conveyance direction C.
  In this embodiment, in any of the belt conveyance devices 131, the belt 135 is positioned between the rails 102 in a plan view. However, the belt 135 is arranged in a plan view according to the structure of the carriage 201. You may make it arrange | position outside the width direction W of the rail 102. FIG.
  In the present embodiment, an end timing belt (toothed belt) is employed as the belt 135, and a gear structure that can mesh with the teeth 135P of the belt 135 is employed for the driving roller 133 and the driven roller 134. ing. The carriage receiving portion 136 (described later) also plays a role of connecting both ends of such a belt 135 into a ring shape. Note that an endless belt 135 may be employed. The belt 135 may have a structure that does not have the teeth 135P, but by using a timing belt (toothed belt), the carriage 201 can prevent slippage that may occur in the driving roller 133 and the driven roller 134. Therefore, it is possible to realize conveyance with higher accuracy.
  In the present embodiment, a servo motor is employed as the motor 132, but a motor other than the servo motor (for example, a stepping motor) may be employed.
  A carriage receiving part 136 as a fitting part is provided on the upper surface of the belt 135. The carriage receiving portion 136 can move along the conveyance direction C in both the downstream CF and the upstream CR in accordance with the rotational drive of the drive shaft 132A by the motor 132. That is, the carriage receiving unit 136 can reciprocate along the conveyance direction C.
  In the present embodiment, the carriage receiving portion 136 includes an upper member 136A located on the upper surface of the belt 135, and a pair of box-shaped protruding members 136B that protrude upward from the upper member 136A and are aligned in the conveyance direction C. The The upper member 136A is disposed so as to connect both end portions of the belt 135 with ends on the upper surface side (the side without the teeth 135P) of the belt 135, and is disposed on the lower surface side (side with the teeth 135P) of the belt 135. Both ends of the belt 135 are sandwiched together with the lower member 136C. In such a state, the upper member 136A, the belt 135, and the lower member 136C are fixed by a fixing member 136D (for example, a bolt nut). A tire 136E is provided on the lower surface of the fixing member 136D. The tire 136E is placed on the guide plate 136F and can roll along the conveyance direction C on the upper surface of the guide plate 136F. Here, the guide plate 136F is a long plate-like member extending in the conveyance direction C, and is arranged between the driving roller 133 and the driven roller 134 in the belt conveyance device 131 and inside the belt 135 spanned between them. Placed in. The guide plate 136F also serves to prevent the belt 135 from drooping. In the present embodiment, the guide plate 136F and the tire 136E can prevent an unintentional change (such as drooping) in the height position of the carriage receiving portion 136 when the belt 135 moves in the conveyance direction C. .
  The drive shaft 132A of the motor 132 that forms the rotation center of the drive roller 133 and the rotation center shaft 134A of the driven roller 134 are rotatably held by a bearing 105 attached to the auxiliary frame 104. The auxiliary frame 104 is located below the rail 102. The auxiliary frame 104 may be fixed to the leg frame 103 so as to be bridged between the leg frames 103 adjacent in the transport direction C, or may be supported by the leg frame 104A that supports the auxiliary frame 104. Alternatively, both may be adopted and fixed. In addition, for each belt conveyance device 131, instead of the guide plate 136F described above, a rotatable support roller (not shown) is disposed on the lower surface of the belt 135 between the driving roller 133 and the driven roller 134. Thus, the belt 135 may be supported by the support roller to maintain the tension of the belt 135.
  Returning to the description based on FIG. 1, FIG. 2, and FIG. The fitting body push-up device 161 is disposed between the end portions 135A of the belt conveyance devices 131 of the two belt conveyance devices 131 arranged in the width direction W of the rail 102 at the connection position CP (see FIG. 4). The fitting body push-up device 161 has a push-up portion 162 (not shown in FIG. 1 and FIG. 2), and moves the push-up portion 162 up and down in accordance with control from the control panel 301. As the structure of the push-up portion 162, a protruding shape protruding upward as shown in FIG. 3 can be adopted. The push-up portion 162 can move upward to push up a push-up projection 208 (described later) provided on the carriage 201 and slide up a bracket 210 (described later) provided on the carriage 201.
  The locking device 181 is disposed at a location deviated from the transfer position CP (see FIG. 4) to at least one of the downstream CF and the upstream CR in the transport direction C. The locking device 181 locks a locking protrusion 207 (described later) provided on the downstream CF in the conveyance direction C with respect to the push-up protrusion 208 in the carriage 201, and the carriage 201 pushed up by the push-up portion 162 moves in the conveyance direction C. Or falling off the rail 102.
  FIG. 5 is a schematic diagram of the locking device 181 in a state where the locking projection 207 of the carriage 201 is locked. FIG. 6 is a schematic diagram of the locking device 181 in a state where the lock with respect to the locking projection 207 of the carriage 201 is released. In the present embodiment, the locking device 181 has a substantially U-shaped locking member 182 (not shown in FIGS. 1 and 2) that opens upward in a side view. The lock member 182 can be rotated about the hinge 182A in the downstream CF and the upstream CR. The lock device 181 can open and close the lock member 182 by rotating the lock member 182 around the hinge portion 182 </ b> A according to control from the control panel 301. When the lock member 182 is closed (see FIG. 5), the locking protrusion 207 of the carriage 201 sandwiches both the downstream CF and upstream CR side surfaces in the transport direction C, and the downstream CF or upstream side in the transport direction C. It is possible to prevent the movement of the carriage 201 that starts to move to the CR, or to prevent the carriage 201 from falling off the rail 102. Moreover, the lock member 182 can be unlocked (see FIG. 6) to unlock the lock projection 207 by the lock member 182.
  The lock member 182 may have any structure as long as it can hold a part of the carriage 201 so that the carriage 201 can be prevented from slipping out and falling off. For example, the lock member 182 employs a horseshoe-shaped or substantially U-shaped structure that cannot be opened and closed, and the lock device 181 moves the lock member 182 up and down in accordance with control from the control panel 301 to lock the lock projection 207 of the carriage 201. The lock member 182 may be positioned so as to sandwich both side surfaces of the downstream CF and the upstream CR in the conveyance direction C in FIG. In the present embodiment, as will be described later, since the locking protrusion 207 is located on the downstream side CF in the transport direction C with respect to the push-up protrusion 208 in the carriage 201, the lock device 181 is more than the fitting body push-up device 161. Is also arranged on the downstream CF in the transport direction C. Here, when the lock protrusion 207 is disposed on the upstream CR in the transport direction C with respect to the push-up protrusion 208 in the carriage 201, the lock device 181 is located on the upstream CR in the transport direction C with respect to the fitting body push-up device 161. Will be placed.
  The cart 201 will be described with reference to FIG. The carriage 201 has wheels 203 and is movable in the transport direction C along the rails 102 with the wheels 203 placed on the rails 102. The carriage 201 moves in the conveyance direction C by moving the belt 135 in the conveyance direction C in a state where at least one of the first fitting protrusion 209A and the second fitting protrusion 209B is fitted to the carriage receiving portion 136 of the belt conveying device 131. It is also conveyed to both the downstream CF and the upstream side. Further, the carriage 201 controls the fitting body pushing-up device 161 in a state in which the pushing-up protrusion 208 (described later) is positioned above the pushing-up portion 162 of the fitting body pushing-up device 161, and based on FIG. 7 and FIG. As will be described later, the transfer is transferred to another belt conveyance device 131.
  The carriage 201 includes a pair of main frames 202, wheels 203, a front frame 204, a rear frame 205, a connecting member 206, a locking projection 207, a push-up projection 208, a first fitting projection 209A, A second fitting protrusion 209B and a bracket 210 are provided.
  Each of the pair of main frames 202 extends parallel to the conveyance direction C, and is separated by a distance narrower than the arrangement interval of the rails 102. The connecting member 206 is a flat plate that is long in the width direction W of the rail 102, and connects the pair of main frames 202 in the middle of the conveyance direction C of the pair of main frames 202. The wheels 203 are rotatably provided at both ends of each main frame 202, and both are located on the outer side surface of the main frame 202 aligned in the width direction W. Note that the wheel 203 may be provided at a position corresponding to the rail 102, and may be positioned inside the main frame 202 as long as the wheel 203 is provided.
  In the present embodiment, a flange portion 203 </ b> B that extends larger than the diameter of the wheel 203 is formed on end surfaces of two wheels 203 (shown by reference numeral 203 </ b> A) provided on one main frame 202. Thereby, when the wheel 203A is placed on the rail 102, the flange portion 203B sandwiches both side surfaces of one rail body (indicated by reference numeral 102A in FIG. 3) constituting the rail 102. Here, the flange portion 203B may be provided for all the wheels 203, may be provided only for any of the wheels 203, or may be provided for two wheels 203 on a diagonal line. good.
  The front frame 204 extends in the width direction W and connects the front ends of the pair of main frames 202 at both ends thereof. The rear frame 205 extends in the width direction W and connects the rear ends of the pair of main frames 202 at both ends thereof. The front frame 204, the rear frame 205, and the pair of main frames 202 constitute a frame-like structure on which the pallet P can be placed. In the present embodiment, the attachment 201A is detachably attached to the upper surface of the front end portion and the upper surface of the rear end portion of the main frame 202, and the pallet P can be placed on the attachment 201A. It is configured. The pallet P can hold a workpiece (not shown). As the attachment 201A, one corresponding to the shape of the pallet P can be used. Note that the attachment 201 </ b> A may not be attached to the carriage 201 as long as the pallet P can be placed on the frame-like structure formed by the front frame 204, the rear frame 205, and the main frame 202.
  The locking protrusion 207 hangs downward from the connecting member 206 at a location above the locking member 182 of the locking device 181 when the wheel 203 of the carriage 201 is placed on the rail 102. In the present embodiment, the locking protrusions 207 are thick metal plates that are aligned in the width direction W and face each other.
  The bracket 210 is attached to the rear end portion (for example, the main frame 202 or the rear frame 205) of the carriage 201, and is provided so as to slide up and down with respect to the main frame 202 and the rear frame 205. As an example, the bracket 210 may employ a metal plate extending in the width direction W and the vertical direction as shown in FIG. A push-up projection 208, a first fitting projection 209A, and a second fitting projection 209B are attached to the bracket 210, and all are suspended from the bracket 210. The push-up protrusion 208, the first fitting protrusion 209A, the second fitting protrusion 209B, and the bracket 210 correspond to a “fitting body” in the claims. The push-up protrusion 208 is provided in the bracket 210 at a position that is positioned above the push-up portion 162 of the fitting body push-up device 161 when the wheel 203 of the carriage 201 is placed on the rail 102. In the bracket 210, the first fitting protrusion 209A has an end portion 135A (see FIG. 2) of the belt 135 of the two belt conveyance devices 131 that are arranged side by side in the width direction W when the wheel 203 of the carriage 201 is placed on the rail 102. ), And is provided at a position that can be fitted to the carriage receiving portion 136 provided on the belt 135. In the bracket 210, the second fitting protrusion 209B is an end portion 135A (see FIG. 2) of the belt 135 of the two belt conveying devices 131 that are arranged side by side in the width direction W when the wheel 203 of the carriage 201 is placed on the rail 102. ) Is located above the other, and is provided at a place that can be fitted to the carriage receiving portion 136 provided on the belt 135. As an example, as illustrated in FIG. 3, the first fitting protrusion 209 </ b> A is located above the end portion 135 </ b> A of the belt 135 of the belt conveyance device 131 located on the right side when the downstream CF in the conveyance direction C is considered as the front side. The second fitting protrusion 209B is located above the end portion 135A of the belt 135 of the belt conveyance device 131 located on the left side when the downstream CF in the conveyance direction C is considered as the front side. The push-up projection 208 is suspended from the end portion 135A of the belts 135 of the two belt conveying devices 131 by hanging down from the bracket 210 at a position aligned with the first fitting projection 209A in the width direction W. It hangs down from the bracket 210 at a position above the push-up portion 162 of the device 161 and sandwiched between the first fitting protrusion 209A and the second fitting protrusion 209B.
  Note that the bracket 210 and the push-up protrusion 208, the first fitting protrusion 209A, and the second fitting protrusion 209B depending on the end of the belt 135 of the two belt conveying devices 131 and the fitting body push-up at the connecting position CP are provided. As long as the device 161 corresponds to the vertical position, the device 161 may be disposed at any position on the carriage 201. In other words, at the transfer position CP in the workpiece transfer device 101, the end portion 135A of the belt 135 of the two belt transfer devices 131 and the fitting body lifting device 161 are connected to the push-up protrusion 208 provided on the carriage 201, the first You may arrange | position so that it may respond | correspond to 1st fitting protrusion 209A and 2nd fitting protrusion 209B.
  Please refer to FIG. The control panel 301 is configured by a computer, a control circuit, and the like, and receives control signals transmitted from each device constituting the work transfer device 101 and sends control signals to these devices. Then, these devices are controlled. In the present embodiment, wiring 302 connects between the control panel 301 and the motor 132, between the control panel 301 and the fitting body lifting device 161, and between the lock device 181 with the control panel 301, It enables transmission and reception of electrical signals between each other. In the present embodiment, the wiring 302 is shown in a wired manner, but at least the control panel 301 and the motor 132, the fitting body push-up device 161, the lock device 181 and the cart position detection sensor are used without using the wiring 302. Communication between the two may be realized by wireless communication such as infrared communication or short-range wireless communication.
  In the present embodiment, a servo motor is employed as the motor 132. For this reason, the position of the carriage 201 to be conveyed can be grasped as described later with reference to FIGS. 7 and 8, and The carriage 201 can be conveyed with high speed and high accuracy. In addition, without using a servo motor, a reflection type or transmission type cart position detection sensor (not shown) that senses a cart 201 that has reached a predetermined position along the rail 102 is arranged on the work transfer device 101. The carriage position detection sensor and the control panel 301 are connected by a wiring 302 so that an electrical signal indicating a sensing result of the carriage position detection sensor is input to the control panel 301, and the control panel 301 responds to the electrical signal. The motor 132, the fitting body push-up device 161, the lock device 181 and the like may be forcibly stopped or forcibly driven.
  Please refer to FIG. 1 and FIG. In the present embodiment, the belt 135 of the belt conveyance device 131 is positioned between the rails 102 in a plan view and extends in the conveyance direction C. For the plurality of belt conveyance devices 131, the end portions 135 </ b> A of the belt 135 are aligned in the width direction W of the rail 102. For this reason, in the present embodiment, when the work transfer device 101 is viewed in a plan view, the belts 135 are arranged in a staggered manner in the left-right direction toward the downstream CF in the transfer direction C as shown in FIG.
  In the present embodiment, the end portions 135A of the pair of belts 135, the fitting body push-up device 161 sandwiched between them, the motor 132 and its drive shaft 132A, the drive roller 133, the driven roller 134, and the lock device The configuration is the same as 181 although the arrangement thereof is symmetric in the width direction W toward the downstream CF in the transport direction C. If these groups are referred to as connecting units 191, in the present embodiment, a plurality of connecting units 191 are provided along the rail 102 at a predetermined interval.
  FIG. 7 is a flowchart showing the flow of the operation of each unit in the workpiece transfer apparatus 101. FIG. 8 is a schematic diagram illustrating the movement of the belt conveyance device 131, the fitting body push-up device 161, and the carriage 201 at the transfer position CP. Please refer to FIG. 1, FIG. 3, FIG. 7, and FIG. In the workpiece transfer apparatus 101 having the above-described configuration, the carriage 201 transfers the plurality of belt transfer apparatuses 131 to the downstream CF in the transfer direction C along the rail 102 and is mounted on the carriage 201 in the procedure described below. The pallet P and the work (not shown) held by the pallet P are conveyed. In the workpiece transfer apparatus 101, a plurality of connecting units 191 are provided at predetermined intervals along the rail 102. Therefore, in the following description, one connecting unit 191 (indicated by reference numeral 191X in FIG. 1) and related items are provided. The fitting body push-up device 161 and the locking device 181 to be used, the belt conveyance device 131 in which the belt 135 is extended from the connection unit 191X to the upstream CR (this is called the upstream belt conveyance device 131R), Description will be made by paying attention to a belt conveyance device 131 in which a belt 135 is extended from the joint unit 191X to the downstream CF (this is referred to as a downstream belt conveyance device 131F). Further, when explaining that the carriage 201 passes through the connecting unit 191X and moves to the downstream side CF in the transport direction C, one of the first fitting protrusion 209A and the second fitting protrusion 209B of the carriage 201 ( In this case, the first fitting protrusion 209A) is previously fitted to the carriage receiving portion 136 of the upstream belt conveyance device 131R, and the carriage receiving portion 136 of the downstream belt conveyance device 131F is connected to the transit position. It is assumed that it is located on the downstream CF side with respect to CP (FIG. 8A).
  In the workpiece conveyance device 101, first, the control panel 301 sends a control signal to the motor 132 provided in the upstream belt conveyance device 131R to drive the drive shaft 132A of the motor 132 to rotate, and the carriage receiving portion of the upstream belt conveyance device 131R. 136 is moved to the transfer position CP on the downstream side CF in the transport direction C (step S10, FIG. 8B).
  Subsequently, the control panel 301 sends a control signal to the lock device 181 to move the lock member 182 of the lock device 181 (in this embodiment, the lock member 182 of the carriage 201 is closed by closing the open lock member 182. In step S30, step S40, and step S50, the carriage 201 is prevented from moving along the rail 102 to the downstream side CF or the upstream side CR in the conveyance direction C (step S20). .
  Subsequently, the control panel 301 sends a control signal to the fitting body push-up device 161 to move the push-up portion 162 of the fitting body push-up device 161 upward so that one of the first fitting protrusion 209A and the second fitting protrusion 209B ( In this case, the first fitting protrusion 209A) is moved away from the carriage receiving portion 136 of the upstream side belt conveyance device 131R (step S30, FIG. 8C). As a result, the bracket 210 (see FIG. 3) provided on the carriage 201 slides upward, the restriction of the first fitting protrusion 209A by the carriage receiving portion 136 is released, and the downstream CF along the conveying direction C is released. Can also move to the upstream CR. However, at this time, since the locking projection 207 is locked by the locking device 181 by the processing in step S20, the carriage 201 does not start to move along the conveyance direction C.
  Subsequently, the control panel 301 sends a control signal to the motor 132 of the upstream belt conveyance device 131R to move the carriage receiving portion 136 of the upstream belt conveyance device 131R to the upstream CR in the conveyance direction C, and from the transfer position CP. Withdrawing, a control signal is sent to the motor 132 of the downstream belt conveyance device 131F, and the carriage receiving portion 136 of the downstream belt conveyance device 131F is moved to the upstream CR in the conveyance direction C to transfer the carriage reception portion 136. Positioning to the position CP is performed (step S40, FIG. 8 (d)). In step S40, the control panel 301 controls the upstream side so that the carriage receiving portion 136 of the upstream belt conveyance device 131R is positioned at another transfer position CP2 at the end of the upstream CR of the upstream belt conveyance device 131R. The motor 132 of the belt conveyance device 131R may be controlled.
  Subsequently, the control panel 301 sends a control signal to the fitting body push-up device 161 to lower the push-up portion 162 of the fitting body pushing-up device 161, and either the first fitting projection 209A or the second fitting projection 209B (this one) In this case, the second fitting protrusion 209B) is fitted to the carriage receiving portion 136 of the downstream side belt conveyance device 131F (step S50, FIG. 8E). As a result, the bracket 210 (see FIG. 3) provided on the carriage 201 slides downward due to its own weight, and the second fitting protrusion 209B is restrained by the carriage receiving portion 136 of the downstream belt conveyance device 131F. Become.
  Subsequently, the control panel 301 sends a control signal to the lock device 181 to move the lock member 182 of the lock device 181 to unlock the carriage 201 (in this embodiment, the lock member 182 in the closed state is opened). Thus, the lock member 182 is released from the locking protrusion 207 of the carriage 201 so that the carriage 201 can freely move along the rail 102 in both the downstream CF and the upstream CR in the transport direction C (step S60). .
  Subsequently, the control panel 301 sends a control signal to the motor 132 provided in the downstream belt conveyance device 131F to rotate the drive shaft 132A of the motor 132 and convey the carriage receiving portion 136 provided in the downstream belt conveyance device 131F. It moves to the downstream CF of the direction C (step S70, FIG.8 (f)). In step S70, the control panel 301 is arranged so that the carriage receiving portion 136 of the downstream belt conveyance device 131F is positioned at another transfer position CP3 at the end of the downstream CF of the downstream belt conveyance device 131F. The motor 132 of the belt conveyance device 131F may be controlled.
  The control panel 301 controls the connecting unit 191X of interest and the devices in the vicinity thereof, and repeats the steps S10 to S70 described above, so that the carriage 201 is in the connecting position CP. Transfer from the upstream belt conveyance device 131R to the downstream belt conveyance device 131F and move along the rail 102 to the downstream CF in the conveyance direction C so as to pass through the connection position CP.
  According to the workpiece conveyance device 101 of the present embodiment, a plurality of belt conveyance devices 131 are arranged along the rail 102, the fitting body lifting device 161 and the lock device 181 are used together, and the carriage 201 is changed to a different belt conveyance device 131 ( For example, the transfer can be made from the upstream belt conveyance device 131R to the downstream belt conveyance device 131F. Therefore, high-speed, high-accuracy and reliable conveyance of the workpiece (conveyed object) can be realized with a simple configuration.
  In the present embodiment, an example in which the carriage receiving portion 136 provided in the belt conveyance device 131 is configured to fit the first fitting protrusion 209A and the second fitting protrusion 209B provided in the carriage 201 is shown. However, the belt conveying device 131 is provided with a male projection instead of the carriage receiving portion 136, and the carriage 201 is provided with a female fitting portion instead of the first fitting projection 209A and the second fitting projection 209B. Thus, the carriage 201 and the belt conveyance device 131 may be fitted at the connection position CP.
  In the present embodiment, an example in which the driving roller 133 is provided on the upstream CR in the conveying direction C with respect to the driven roller 134 in the belt conveying device 131 is shown. However, the driving roller 133 is arranged in the conveying direction C with respect to the driven roller 134. Needless to say, it may be provided on the downstream CF.
  In the present embodiment, the control panel 301 controls all of the motor 132, the fitting body lifting device 161, and the locking device 181. However, some of these are not controlled by the control panel 301 but are handled by workers. You may make it carry out by manual operation by.
  In the present embodiment, the plurality of belt conveyance devices 131 are arranged so that the belts 135 are staggered in the left-right direction toward the downstream CF in the conveyance direction C, but the plurality of belt conveyance devices 131 are arranged. The arrangement is not limited to a staggered pattern as long as the transit position CP is secured. However, in this case, the shapes of the fitting bodies (the push-up protrusions 208, the first fitting protrusions 209A, the second fitting protrusions 209B, and the brackets 210) provided on the carriage are pushed up by the fitting body push-up device 161 at the transit position CP. It is necessary to correspond to the configuration of the carriage 162 and the carriage receiving unit 136 of the belt conveyance device 131.
  Further, in this embodiment, the carriage 201 is not equipped with a machine that operates by receiving power supply or a drive source that imparts a conveying force to the carriage 201. However, these machine elements may be mounted on the carriage 201. It goes without saying that there is nothing. In the present embodiment, it is shown that the pallet P is mounted on the carriage 201 and the workpiece can be transferred by the workpiece transfer apparatus 101 in a state where the workpiece is supported on the pallet P. What is done is not limited to the palette P. For example, if the pallet P is not necessary when the workpiece is transferred by the workpiece transfer device 101, the workpiece is directly loaded on the cart 201 without applying the pallet P to the cart 201, and the workpiece is transferred by the workpiece transfer device 101. May be conveyed.
101 Work Conveying Device 131 Belt Conveying Device 131R Upstream Belt Conveying Device (One Belt Conveying Device)
131F Downstream belt conveyor (another belt conveyor)
135 Belt 135A End 136 Bogie Receiving Part (Fitting Part)
140 Drive part 161 Fitting body push-up device 181 Lock device 201 Cart 208 Push-up projection (fitting body)
209A First fitting protrusion (fitting body)
209B second fitting protrusion (fitting body)
210 Bracket (Fitting body)
301 Control panel (control unit)
C Transport direction CF Downstream side CR Upstream side CP Transfer position W Width direction

Claims (3)

  1. A carriage for carrying a workpiece can be placed, and a belt extending along a rail that defines the conveyance direction of the carriage; a drive unit that reciprocates the belt in the conveyance direction; and a belt provided on the belt. A belt conveyance device that has a fitting portion that can be fitted with a fitting body that can be moved up and down,
    A lock device for locking movement of the carriage in the transport direction;
    A fitting body push-up device for pushing up the fitting body of the carriage locked by the lock portion;
    With
    One end of either the downstream side or the upstream side in the conveyance direction of the belt of one belt conveyance device, and the downstream side and the upstream side in the conveyance direction of the belt of another belt conveyance device adjacent to the belt conveyance device Any one of the other ends is arranged in the width direction of the rail.
  2. One end of the belt is lined up in the width direction of the rail in the fitting portion of the belt conveying device in a state where the driving unit of one belt conveying device is controlled and the fitting body of the carriage is fitted. Processing to move to the transit position,
    The locking device is controlled to lock the carriage having the fitting body in which the fitting portion located at the connecting position is fitted, and then the fitting body push-up device is controlled and locked by the locking device. The process of pushing up the mating body of the cart,
    The drive unit of the belt conveyance device is controlled to retract the fitting portion of the belt conveyance device from the connecting position, and another belt conveyance device adjacent to the belt conveyance device on the downstream side in the conveyance direction is connected to the belt conveyance device. A process of controlling the drive unit to move the fitting portion of the belt conveying device to the connecting position;
    Controlling the fitting body push-up device, fitting the fitting body of the carriage to the fitting portion of the other belt conveying device, and subsequently controlling the locking device to release the lock of the carriage;
    The work conveyance apparatus of Claim 1 provided with the control part which performs.
  3. A carriage for carrying a workpiece can be placed, and a belt extending along a rail that defines the conveyance direction of the carriage; a drive unit that reciprocates the belt in the conveyance direction; and a belt provided on the belt. A belt conveyance device that has a fitting portion that can be fitted with a fitting body that can be moved up and down,
    A lock device for locking movement of the carriage in the transport direction;
    A fitting body push-up device for pushing up the fitting body of the carriage locked by the lock portion;
    One end of either the downstream side or the upstream side in the transport direction of the belt of the one belt transport device, and the downstream side in the transport direction of the belt of another belt transport device adjacent to the belt transport device And a workpiece transfer method performed in a workpiece transfer apparatus in which the other end on the upstream side is aligned in the width direction of the rail,
    One end of the belt is lined up in the width direction of the rail in the fitting portion of the belt conveying device in a state where the driving unit of one belt conveying device is controlled and the fitting body of the carriage is fitted. Moving to the transit position;
    The locking device is controlled to lock the carriage having the fitting body in which the fitting portion located at the connecting position is fitted, and then the fitting body push-up device is controlled and locked by the locking device. The process of pushing up the mating body of the cart,
    The drive unit of the belt conveyance device is controlled to retract the fitting portion of the belt conveyance device from the connecting position, and another belt conveyance device adjacent to the belt conveyance device on the downstream side in the conveyance direction is connected to the belt conveyance device. A step of controlling the drive unit to move the fitting portion of the belt conveying device to the connecting position;
    Controlling the fitting body lifting device, fitting the fitting body of the carriage to the fitting portion of the other belt conveying device, subsequently controlling the locking device and releasing the locking of the carriage;
    A workpiece transfer method comprising:
JP2012040633A 2012-02-27 2012-02-27 Work conveyor and work conveying method Pending JP2013173214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012040633A JP2013173214A (en) 2012-02-27 2012-02-27 Work conveyor and work conveying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012040633A JP2013173214A (en) 2012-02-27 2012-02-27 Work conveyor and work conveying method

Publications (1)

Publication Number Publication Date
JP2013173214A true JP2013173214A (en) 2013-09-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012040633A Pending JP2013173214A (en) 2012-02-27 2012-02-27 Work conveyor and work conveying method

Country Status (1)

Country Link
JP (1) JP2013173214A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016088127A (en) * 2014-10-30 2016-05-23 トヨタ自動車東日本株式会社 Vehicle carrying device
CN111731817A (en) * 2020-07-08 2020-10-02 天津康帝德科技有限公司 Butt-joint type transmission system
CN112427912A (en) * 2020-12-03 2021-03-02 中车石家庄车辆有限公司 Bogie disassembling system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016088127A (en) * 2014-10-30 2016-05-23 トヨタ自動車東日本株式会社 Vehicle carrying device
CN111731817A (en) * 2020-07-08 2020-10-02 天津康帝德科技有限公司 Butt-joint type transmission system
CN112427912A (en) * 2020-12-03 2021-03-02 中车石家庄车辆有限公司 Bogie disassembling system and method

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