JP2019172444A - Pallet for conveyance, pallet conveyance device and pallet conveyance method using pallet for conveyance - Google Patents

Abstract

To make engagement and disengagement easy with a moving body, and make it easy to transfer to a different guide rail, and easy to change its pitch.SOLUTION: A pallet 11 for conveyance has a linear motion block 12 which moves on a guide rail 23, a base 13 to which the linear motion block is attached, and a locking member 14 provided in the base. A moving mechanism 15 is provided for moving the locking member between a locking position where the locking member is locked to the moving body 32 and a disengagement position where the locking member is separated from the moving body 32. A pallet conveyance device includes: a pallet for conveyance; a guide rail that mounts the pallet for conveyance; a moving body 32 provided so as to be movable along the guide rail and capable of locking the locking member of the pallet for conveyance; a moving means 33 for moving the moving body; an operation actuator 67 capable of operating the moving mechanism 15 of the pallet for conveyance to bring the locking member into the disengagement position; and a longitudinal actuator 66 for moving the pallet for conveyance in a longitudinal direction of the guide rail when the locking member is located at the disengagement position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transport pallet for mounting and transporting a workpiece, a pallet transport apparatus using the pallet, and a pallet transport method.

  2. Description of the Related Art Conventionally, in a production line, there is a transport device that transports a work on a conveyor and a transport destination machine tool performs predetermined processing on the work. The applicant of the present invention has proposed a pallet transport device that can easily change the transport pitch of a pallet on which such a workpiece is mounted (see, for example, Patent Document 1).

  This transport device includes a transport pallet configured to be able to mount a work, a guide rail on which the pallet is movably mounted, and a belt that is provided endlessly along the guide rail and circulates to form a moving body. The pallet is locked to the circulating belt, so that the pallet is conveyed along the guide rail, and it can be expected that the conveyance speed and positioning accuracy of the workpiece can be improved.

JP 2011-189998 A

  Here, in the conventional pallet conveying device, in order to lock the pallet to the belt which is a moving body, the belt is formed with irregularities extending in the width direction alternately and continuously in the longitudinal direction and engaged with the irregularities. Unevenness is formed on the pallet. For this reason, when transferring a pallet for conveyance onto a guide rail provided with such a belt, the speed and position of the belt are synchronized with the pallet so that the unevenness of the pallet is engaged with the unevenness of the belt. It was necessary to take and operate.

  When transferring the transfer pallet from the transfer side guide rail to the return side guide rail, the transfer pallet that has come out of the end of the transfer side guide rail is moved to the end of the return side guide rail. The pallet for conveyance is operated by synchronizing the speed and position of the belt provided along the guide rail on the return side with the pallet so that the unevenness of the pallet is engaged with the unevenness of the belt. Had to be fed into the guide rail on the return side.

  However, it is relatively difficult to synchronize the movement of the pallet and the rotation speed of the belt as described above to engage the unevenness with the unevenness, and the installation work of the pallet conveying device or the pallet conveying device actually There was a problem that the adjustment work before the operation was relatively long.

  On the other hand, in the state where a plurality of conveyance pallets are mounted on the same guide rail, the unevenness of the pallet engages with the unevenness of the belt in the mounted state, so between the plurality of conveyance pallets in the same conveyance path There was also inconvenience that the pitch could not be changed.

  An object of the present invention is to provide a transport pallet that can be easily engaged with and released from a movable body, and a pallet transport device and a pallet transport method using the same.

  Another object of the present invention is to provide a transport pallet that can be easily transferred to different guide rails, and a pallet transport device and a pallet transport method using the same.

  Still another object of the present invention is to provide a transport pallet that can be easily changed in pitch while mounted on a guide rail, and a pallet transport device and a pallet transport method using the pallet.

  The present invention has a linear motion block configured to be movable on a guide rail, a pedestal to which the linear motion block is attached, and a locking member provided on the pedestal, and is provided along the guide rail. This is an improvement of the transport pallet that moves on the guide rail by locking the locking member to the moving body.

  The characteristic configuration is that a moving mechanism is provided that reciprocates between a locking position where the locking member is locked to the moving body and a separation position where the locking member is separated from the moving body.

  In this case, it is preferable that the linear motion block is attached to the lower portion of the pedestal, and the locking members are preferably provided on both sides in the width direction perpendicular to the guide rails of the lower portion of the pedestal sandwiching the linear motion block. It is further preferable that an operation piece extending in a width direction orthogonal to the operation piece is provided, and a holding piece is provided on the pedestal to sandwich the operation end of the operation piece from the front and rear in the longitudinal direction of the guide rail.

  On the other hand, another aspect of the present invention is configured such that the conveyance pallet, a guide rail on which the conveyance pallet is movably mounted, and a locking member of the conveyance pallet that can be moved along the guide rail can be locked. Movable body, a moving means for moving the moving body, an operation actuator capable of operating the moving mechanism of the conveying pallet to bring the locking member into the disengaged position, and the conveying pallet with the locking member being in the disengaged position as a guide rail And a longitudinal actuator that moves in the longitudinal direction of the pallet.

  The moving body in this pallet conveying device is a belt in which irregularities extending in the width direction are formed alternately and continuously in the longitudinal direction, and irregularities that can be engaged with the irregularities are formed on the locking member and conveyed to the guide rail. With the pallet mounted, the unevenness of the locking member at the locking position is engaged with the unevenness of the belt, and the unevenness of the locking member at the release position is separated from the unevenness of the belt. preferable.

  Further, the transfer pallet moving mechanism extends in the width direction perpendicular to the guide rail, and includes an operation piece that moves in the width direction to move the locking member. The operation actuator moves in and out of the housing and operates the operation piece. It has a retractable rod that can come into contact with the end, and a holding piece is provided on the base of the conveying pallet to hold the operating end of the operating piece from the front and back in the longitudinal direction of the guide rail. It is also possible to configure so that the operation actuator with the rod sandwiched is moved in the longitudinal direction of the guide rail together with the conveying pallet.

  Further, when a plurality of guide rails are provided continuously in the longitudinal direction for movably mounting the pallet for conveyance, the operation actuator and the longitudinal actuator are provided at the joint portion of the guide rail, and the locking member is detached from the longitudinal actuator. It is preferable that the conveying pallet at the position is configured to be moved from one guide rail to another guide rail continuous to the one guide rail.

  On the other hand, when a pair of guide rails on which the transfer pallet is movably mounted are provided in parallel to each other at a predetermined interval in the horizontal direction, the short rail on which the transfer pallet can be mounted and one short guide rail A width direction actuator that moves between a first position that is continuous with the second guide rail and a second position that is continuous with the other guide rail, and the width direction actuator moves the operation actuator and the longitudinal direction actuator together with the short rail. The longitudinal actuator may be configured such that the locking member moves the transfer pallet in the disengaged position from one or the other guide rail to the short rail or from the short rail to one or the other guide rail. .

  In addition, in the pallet transport method in which a plurality of transport pallets are mounted on the guide rail and moved, the plurality of transport pallets are mounted on the guide rail and are moved along the guide rail. Each of the transporting pallets is moved by locking the stop members, and the locking member of one transport pallet is separated from the moving body so that one transport pallet or another transport pallet is moved along the guide rail. And the distance between one transport pallet and another transport pallet is changed.

  On the other hand, in the pallet conveying method in which the conveying pallet is mounted on a plurality of guide rails and moved, the conveying pallet is mounted on the guide rail and the locking member is attached to the moving body provided along the guide rail. The conveying pallet is moved by being locked, and the locking member is detached from the moving body and moved from one guide rail to another guide rail.

  Since the transfer pallet of the present invention is provided with a moving mechanism for moving the locking member, the pallet transfer apparatus and the pallet transfer method using the transfer pallet can be easily moved from the moving body by simply moving the locking member. It is possible to engage and release the engagement easily. When the movable body provided along the guide rail is locked, the conveying pallet can be conveyed along the guide rail. Conversely, when the locking member is separated from the movable body, the movement is moved. Can be easily stopped.

  Further, when the locking member is separated from the moving body, independent movement can be performed separately from the moving body. For this reason, by moving the transfer pallet with the locking member separated from the moving body separately from the moving base, it can be easily transferred to different guide rails, and a plurality of transfer pallets are mounted on the guide rail. If it is, the interval between the transfer pallets can be easily changed.

It is a front view which shows the pallet conveying apparatus of embodiment of this invention. It is the top view which looked at the pallet for conveyance from the C direction of FIG. It is the sectional view on the AA line of FIG. It is sectional drawing corresponding to FIG. 3 which shows the state which the latching member went up and was spaced apart from the moving body. It is the BB sectional drawing of FIG. 8 which shows the moving means. It is a top view which shows the pallet conveying apparatus. It is a top view which shows the state which the pallet for conveyance reached the edge part of the one guide rail in the pallet conveying apparatus. FIG. 8 is a top view corresponding to FIG. 7 showing a state in which the transport pallet is mounted by moving from the end of one guide rail to the short rail. FIG. 9 is a top view corresponding to FIG. 8 illustrating a state in which a short rail on which a transport pallet is mounted is moved from a position where it is continuous with one guide rail to a position where it is continuous with another guide rail. FIG. 10 is a top view corresponding to FIG. 9 showing a state in which the transport pallet has moved from the short rail to another guide rail. It is a front view which shows another pallet conveying apparatus of this invention embodiment. It is the top view which looked at the another conveyance pallet from the D direction of FIG. FIG. 13 is a top view corresponding to FIG. 12 showing a state in which the pallet for conveyance has moved from one guide rail to another guide rail continuous thereto in the other pallet conveying device. It is the EE sectional view taken on the line of FIG. FIG. 15 is a cross-sectional view corresponding to FIG. 14 illustrating a state in which the locking member is lifted and separated from the moving body by the operation actuator of the other pallet conveying device. FIG. 10 is a top view of still another pallet transport device in which the pallet moving means is provided in the middle of the guide rail.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the conveying pallet 11 according to the present invention includes a linear motion block 12 configured to be movable on the linear motion guide rail 23 across the linear motion guide rail 23, and the linear motion thereof. A pedestal 13 to which the block 12 is screwed and a locking member 14 provided on the pedestal 13 via a moving mechanism 15 are provided.

  The linear motion block 12 is a commercially available product sold as a pair with the linear motion guide rail 23, and preferably includes a roller retainer (not shown). By using the linear motion block 12 having this roller retainer, the linear motion guide rail 23 is prohibited from moving in the width direction and tilting with respect to the linear motion guide rail 23 on which the linear motion block 12 is mounted. It is possible to remarkably reduce the resistance of the conveying pallet 11 having the movement on the linear motion guide rail 23.

  The locking member 14 is superposed on the moving body and engages with the moving body. Although described later, the moving body in this embodiment is a belt 32. Therefore, the locking member 14 is superposed on the belt 32 which is a moving body to engage and lock the belt 32 which is the moving body, and the transport pallet 11 is linearly moved by the movement of the belt 32. It is moved while mounted on the guide rail 23.

  As shown in the enlarged view of FIG. 1, the belt 32 in this embodiment is one in which concaves and convexes 32 a and 32 b extending in the width direction are alternately continued in the longitudinal direction, and the belt 32 is superposed on the belt 32. In order to lock, the locking member 14 is formed with uneven portions 14a and 14b that can be engaged with the uneven portions 32a and 32b.

  As shown in FIGS. 2 and 3, in this embodiment, the linear motion block 12 is attached to the lower portion of the pedestal 13, and the locking member 14 is a guide rail at the lower portion of the pedestal 13 sandwiching the linear motion block 12. The case where it is each provided in the both sides of the width direction (Y-axis direction) orthogonal to 23 is shown.

  As shown in FIG. 3, the moving mechanism 15 has a locking position where the locking members 14 provided on both sides of the lower portion of the pedestal 13 overlap with belts 32 which are moving bodies provided on both sides of the guide rail 23. And, as shown in FIG. 4, it is reciprocated between the belt 32 that is a moving body and the disengagement positions that are separated from each other.

  Specifically, as shown in FIG. 3, the moving mechanism 15 in this embodiment penetrates both sides of the pedestal 13 so as to sandwich the linear motion block 12 provided at the lower center of the horizontal pedestal 13. A pair of support rods 16 are provided so as to be vertically movable in the vertical direction. A locking member 14 is provided at the lower end of each of the pair of support rods 16, 16 provided on both sides of the pedestal 13, and a connecting member 17 is installed at the upper end of each of the pair of support rods 16, 16. The

  As shown in FIGS. 1 to 3, a cam plate 18 is provided so as to be capable of reciprocating in a horizontal direction (Y-axis direction) orthogonal to the linear motion guide rail 23 across the linear motion block 12 on the upper surface of the pedestal 13. Specifically, a rail 19 extending in the horizontal direction (Y-axis direction) orthogonal to the linear motion guide rail 23 is provided on the upper surface of the pedestal 13, and a linear motion block 20 movable to the rail 19 is provided on the cam plate 18. Mounted. The rail 19 and the linear motion block 20 ensure the smooth movement of the cam plate 18.

  The cam plate 18 is provided between the base 13 and the connecting member 17, and the connecting member 17 positioned above the cam plate 18 is provided with a roller 17 a that rolls on the upper surface of the cam plate 18. As shown in FIG. 3, a V-shaped lower portion 18a is formed on the upper surface of the cam plate 18 together with the roller 17a to position the connecting member 17 at a lower position, and the lower position is formed on both sides of the lower portion 18a. A V-shaped inclined surface 18b that smoothly connects the portion 18a to the upper surface of the cam plate 18 is formed.

  As shown in FIG. 1, a coil spring 21 is interposed between the base 13 and the locking member 14, and the locking member 14 is separated from the base 13 by the biasing force of the coil spring 21. . For this reason, in the connecting member 17 connected to the locking member 14 via the pair of support rods 16 and 16 by the biasing force of the coil spring 21, the roller 17a contacts the lower portion 18a, and the connecting member 17 is moved to the lower position. The locking member 14 is configured to be positioned at a locking position where the locking member 14 overlaps the belt 32.

  Conversely, as shown in FIG. 4, when the cam plate 18 is moved in the longitudinal direction against the biasing force of the coil spring 21 from this state, the roller 17a rolls on the inclined surface 18b from the lower portion 18a. The connecting member 17 rises together with the rising roller 17a, and the engaging member 14 connected to the connecting member 17 via the pair of support rods 16 and 16 is raised from the engaging position where the belt 32 overlaps. And configured to be raised to the disengagement position.

  As described above, the cam plate 18 provided on the upper surface of the pedestal 13 extends in the direction perpendicular to the guide rail 23 (Y-axis direction) and moves the locking member 14 up and down by moving in the longitudinal direction. An operation piece for raising and lowering the locking member 14 is provided, and the pedestal 13 has an end protruding from the pedestal 13 of the cam plate 18 serving as the operation piece, in the longitudinal direction of the linear motion guide rail 23 serving as the traveling direction. A sandwiching piece 26 sandwiched between the two is provided on the front and rear sides thereof.

  The pedestal 13 is provided with a cover member 22 that covers the cam plate 18 from above, and a mounting tool 24 for mounting a workpiece is further provided on the upper surface of the cover member 22. The mounting tool 24 is for mounting a workpiece (not shown), and the structure of the mounting tool 24 is appropriately changed and used depending on the type of workpiece to be mounted on the pallet 11 and processed.

  Next, a pallet conveying apparatus provided with the above pallet for conveyance will be described.

  1 to 6 show a pallet transport device 28 according to the present invention. In each figure, three axes X, Y, and Z orthogonal to each other are set, the X axis extends in a substantially horizontal lateral direction, the Y axis extends in a substantially horizontal front-rear direction, and the Z axis extends in a vertical direction. The configuration will be described.

  The pallet conveying device 28 circulates and conveys a conveying pallet 11 on which a workpiece (not shown) is mounted, and the conveying pallet 11 in front of the machine tools 1 to 4 (FIG. 6) provided along the conveying path. Is a circulation type pallet transfer device 28 used when the workpieces (not shown) mounted on the transfer pallet 11 are processed by the machine tools 1 to 4.

  Although FIG. 6 shows a case where four machine tools 1 to 4 are provided on both sides of the pallet conveying device 28 of the present invention, this is an example, and the number of machine tools 1 to 4 is the number of machines. Depending on the required work, the number of pallets 11 for conveyance is appropriately increased or decreased according to the number of machine tools 1 to 4.

  In order to circulate the transport pallet 11, the pallet transport device 28 in this embodiment includes the transport pallet 11 described above and a plurality of linear motion guide rails 23 on which the transport pallet 11 is movably mounted. The linear motion guide rails 23 extend in the longitudinal direction (X-axis direction) and are provided parallel to each other with a predetermined interval in the horizontal direction (Y-axis direction).

  As shown in detail in FIG. 3, a support plate 29 is directly fixed on the gantry 9 along the conveyance path (X-axis direction), and a linear motion guide rail 23 is screwed on the upper edge of the support plate 29. It is fixed by a stop. As shown in FIG. 6, first and second pallet rails 30 and 40 parallel to each other are formed by the support plate 29 and the linear motion guide rail 23 attached to the upper edge thereof. The rails 30 and 40 are configured to mount the transfer pallet 11 so as to be movable in a horizontal state.

  As the linear motion guide rails 23 provided on the first and second pallet rails 30 and 40, a linear motion block 12 provided on the transport pallet 11 can be mounted. By supporting the fixed linear motion block 12 across the linear motion guide rails 23 in the first and second pallet rails 30 and 40 so as to be movable, the transport pallet 11 is in the horizontal state in the first and second pallets. The two pallet rails 30 and 40 are movably mounted.

  As shown in FIG. 6, the pallet transport device 28 in the present embodiment includes a first pallet feeding means 31 that transports the transport pallet 11 mounted on the first pallet rail 30 along the first pallet rail 30. The second pallet feeding means 41 is provided for transporting the transport pallet 11 mounted on the second pallet rail 40 along the second pallet rail 40.

  Since the first pallet feeding means 31 and the second pallet feeding means 41 have the same structure, the first pallet feeding means 31 will be described below as a representative.

  As shown in FIGS. 1 to 3, the first pallet feeding means 31 is configured to be engageable with the transport pallet 11, and is provided on both sides of the first pallet rail 30 along the first pallet rail 30. And a circulating belt 32 that circulates and becomes a moving body, and a moving means 33 (FIG. 1) that moves the circulating belt 32 so as to circulate.

  That is, as shown in FIG. 1, driven pulleys 34 are provided on both sides of the support plate 29 in the first pallet rail 30, and the circulation belt 32 surrounds the four driven pulleys 34. These are hung on both sides of the support plate 29.

  A drive shaft 35 a is pivotally supported on the support plate 29, and drive pulleys 35 having the same shape and the same size are attached to both sides of the drive shaft 35 a penetrating the support plate 29.

  On the other hand, the gantry 9 is provided with a servo motor 33 which is a moving means for circulating and moving the circulation belt 32, and a drive shaft 35a is connected to the rotating shaft 33a (FIG. 3). The drive pulley 35 is provided on the same surface as the four driven pulleys 34 on both sides of the support plate 29, and in the vicinity of the drive pulley 35, the circulation belt 32 is wound around the drive pulley 35. A pair of turning pulleys 36 for turning the two are pivotally supported on both sides of the support plate 29.

  When the servo motor 33 is driven by a command from a controller (not shown), the drive pulleys 35 on both sides of the support plate 29 are rotated simultaneously, and the circulation belt 32 existing on both sides of the support plate 29 is wound around these drive pulleys 35. Are configured to circulate at the same speed in a state in which the four driven pulleys 34 are surrounded.

  The circulation belt 32 on both sides of the support plate 29 is a so-called toothed belt 32. As shown in the enlarged view of FIG. 1, the circulation belt 32 is a belt 32 in which concave and convex portions 32a and 32b extending in the width direction are alternately continued in the longitudinal direction, and can be engaged with the concave and convex portions 32a and 32b. 14 a and 14 b are formed on the locking member 14 provided on the base 13 of the conveying pallet 11 via the moving mechanism 15.

  The protrusions and recesses 14 a and 14 b of the locking member 14 are configured to engage with the recesses and protrusions 32 a and 32 b of the circulation belt 32. That is, when the locking member 14 is superimposed on the circulation belt 32 at the locking position, the irregularities 14a and 14b formed on the locking member 14 engage with the irregularities 32a and 32b formed on the circulation belt 32, and The movement of the conveying pallet 11 independent of the circulation belt 32 in the X-axis direction is prohibited. Accordingly, when the servo motor 33 is driven to circulate the circulation belt 32 with which the conveyance pallet 11 is engaged, the conveyance pallet 11 moves together with the circulation belt 32, and the first and the second along the circulation belt 32. The transport pallet 11 is transported along the two pallet rails 30 and 40.

  Here, reference numeral 37 in FIG. 1 is a support member 37 that prevents the circulation belt 32 between the driven pulleys 34 from loosening and prevents the circulation belt 32 from being separated from the locking member 14. An attachment 38 for attaching the support member 37 to the support plate 29 is shown.

  As shown in FIGS. 1 and 6, pallet moving means 61 are provided at both ends of the first and second pallet rails 30 and 40, respectively. The pallet moving means 61 provided at both ends have a symmetrical structure with the first and second pallet rails 30 and 40 in between, and are mounted on either the first or second pallet rails 30 or 40. The conveyed pallet 11 is moved to the other pallet rail.

  In this embodiment in which the first and second pallet rails 30 and 40 are provided in parallel to each other, the transport pallet 11 mounted on the first pallet rail 30 is moved to the second pallet rail 40. In this case, the transfer pallet 11 mounted on the second pallet rail 40 is moved to the first pallet rail 30.

  For this reason, the pallet moving means 61 includes a short rail 62 on which the transfer pallet 11 can be mounted, a first position where the short rail 62 is continuous with the first pallet rail 30, and a second position where the short pallet rail 40 is continuous with the second pallet rail 40. The width direction actuator 63 is moved between.

  The short rail 62 is the same as the linear motion guide rail 23 in the first and second pallet rails 30, 40, and the length W (FIG. 6) of the short rail 62 is the X axis of the transport pallet 11. The length is equal to or longer than the length L in the direction (FIG. 6).

  As shown in FIG. 5, the short rail 62 in this embodiment is attached to the upper edge of the short support plate 64 that stands on the base 65 and is provided in parallel with the first and second pallet rails 30 and 40. Indicates the case where

  The width direction actuator 63 reciprocates the short rail 62 with the base 65 between the first position and the second position. The width direction actuator 63 is a servo motor 63a (FIGS. 6 to 10). And a follower 63c that is screwed to the ball screw 63b to move in parallel, and the follower 63c is movable in the Y-axis direction. The housing 63d is attached to the gantry 9 via a support column 63e. Extending in the Y-axis direction.

  The width direction actuator 63 is provided with a moving element 63c that moves in the longitudinal direction of the housing 63d on the upper surface of the housing 63d. And the base 65 is attached to the follower 63c.

  For this reason, the follower 63c moves together with the base 65, and as shown in FIGS. 7 and 8, the short rail 62 provided on the upper surface of the base 65 is connected to the first or second pallet rail 30,40. When continuous with the linear motion guide rail 23, the short rail 62 carries the transport pallet 11 moved from the linear motion guide rail 23 in the first and second pallet rails 30, 40, or is attached to the short rail 62. The mounted pallet 11 for conveyance is comprised so that a movement to those linear motion guide rails 23 is possible.

  In addition, a longitudinal actuator 66 and an operation actuator 67 are provided on the base 65 provided with the short rail 62. The longitudinal actuator 66 has the same structure as the previous Y-axis direction actuator 63, and is attached to the base 65 via a support 66e with its housing 66d parallel to the short rail 62.

  The operation actuator 67 is a fluid pressure cylinder that causes the retracting rod 67 a to protrude from the housing 67 b by fluid pressure, and the follower of the longitudinal actuator 66 so that the retracting rod 67 a is parallel to the cam plate 18 of the conveying pallet 11. It is attached to 66c via a fitting 67c.

  As shown in FIGS. 7 and 10, when the follower 66c moves toward the first or second pallet rail 30 or 40, the longitudinal actuator 66 has an end portion of the first or second pallet rail 30 or 40. The retracting rod 67a of the operation actuator 67 continues to the cam plate 18 of the conveying pallet 11 mounted on the pallet 11 and the follower 66c is connected to the first or second pallet rail 30 or 40 as shown in FIGS. When moving away, the projecting rod 67a of the operation actuator 67 is configured to be continuous with the cam plate 18 of the transport pallet 11 mounted on the short rail 62.

  For this reason, in a state where the transport pallet 11 mounted and moved on the first or second pallet rail 30 or 40 reaches the end of the first or second pallet rail 30 or 40, the longitudinal actuator 66 is When the follower 66c is moved to the first or second pallet rail 30 or 40 side, the retracting rod 67a of the operation actuator 67 continues to the cam plate 18 of the conveying pallet 11, and as shown in FIG. When the rod 67a protrudes from the housing 67b, the cam plate 18 is configured to move in the longitudinal direction after contacting the end of the cam plate 18 serving as the operation piece.

  When the cam plate 18 moves in the longitudinal direction, the roller 17a in the lower portion 18a of the cam plate 18 rises from the lower portion 18a on the inclined surface 18b, and the connecting member 17 rises together with the rising roller 17a. Against the urging force, the locking member 14 connected to the connecting member 17 via the support bar 16 is raised to the disengaged position that is raised from the locking position.

  In this way, the locking member 14 that has been raised to the disengagement position is separated from the belt 32, and the engagement is released, and the transport pallet 11 is independent of the belt 32 and the first or second pallet rail. It can move along 30 or 40.

  However, the conveying pallet 11 is provided with a clamping piece 26 that sandwiches the cam plate 18 as an operation piece, and the retracting rod 67a of the operation actuator 67 that pushes the cam plate 18 is clamped by the clamping piece 26. become. For this reason, even if the locking member 14 is separated from the belt 32, free movement independent of the operation actuator 67 of the transport pallet 11 is prohibited.

  Accordingly, as shown in FIGS. 7 and 10, the projecting shaft 67 a of the operation actuator 67 that faces the end of the cam plate 18 is protruded, the cam plate 18 is moved, and the locking member 14 is separated from the belt 32. When the longitudinal actuator 66 moves the operating actuator 67 in the direction away from the first or second pallet rail 30 or 40 as shown in FIGS. The end of the first or second pallet rail 30 or 40 is moved to the short rail 62.

  On the other hand, the longitudinal actuator 66 moves the operation actuator 67 in a direction away from the first or second pallet rail 30 or 40. As shown in FIGS. When the operation actuator 67 is moved to the first or second pallet rail 30 or 40 side in a state where it is mounted on the first pallet rail 30 or 40 and mounted on the first or second pallet rail 30 or 40, a retracting rod 67a of the operation actuator 67 is obtained. Is transferred to the first or second pallet rail 30 or 40 from the short rail 62 as shown in FIGS. 7 and 10.

  As described above, when the retracting rod 67a of the operation actuator 67 is retracted into the housing 67b after the transport pallet 11 has moved to the first or second pallet rail 30 or 40, as shown in FIG. Due to the urging force, the locking member 14 is separated from the pedestal 13, superposed on the belt 32 provided along the first or second pallet rail 30 or 40, and engaged with the belt 32. Therefore, by subsequently circulating the belt 32, the transport pallet 11 can be transported along the first or second pallet rail 30 or 40.

  Next, the pallet conveyance method in the present invention using the above-described conveyance pallet will be described.

  The pallet transport method according to the present invention is a pallet transport method in which the transport pallet 11 is mounted on a plurality of linear motion guide rails 23 and moved. The moving pallet 11 is moved by engaging the engaging member 14 with a belt 32 that is provided along the motion guide rail 23, and in this embodiment is provided with an endless and circulating belt 32. The locking member 14 is detached from a certain belt 32 and moved from one linear motion guide rail 23 to another linear motion guide rail 23.

  In the pallet conveying device 28, the first and second pallet rails 30 and 40 having the linear motion guide rails 23 are provided in parallel with each other at a predetermined interval in the horizontal direction. The first pallet transport method includes a first pallet transport process for transporting the transport pallet 11 mounted on the first pallet rail 30 along the first pallet rail 30, and a transport for reaching the end of the first pallet rail 30. A first pallet moving step for moving the pallet 11 to the second pallet rail 40; a second pallet conveying step for conveying the conveying pallet 11 mounted on the second pallet rail 40 along the second pallet rail 40; A second pallet moving step of moving the transfer pallet 11 reaching the end of the two pallet rails 40 to the first pallet rail 30; Have, thereby, a method for circulating the conveying pallet 11.

  In this embodiment, each step will be described below on the assumption that the transport pallet 11 circulates in a counterclockwise orbit in the top view in FIG.

<First pallet transport process>
In this step, the transfer pallet 11 mounted on the first pallet rail 30 is transferred.

  As shown in FIGS. 1 and 6, the transport pallet 11 in this embodiment is for mounting a work to be subjected to predetermined processing, and the work is placed on the transport pallet 11 mounted on the first guide rail 21. Furthermore, since the transport pallet 11 includes a mounting tool 24 for mounting a work, the work is mounted on the transport pallet 11 via the mounting tool 24.

  The transport pallet 11 is mounted on the first guide rail 21 by mounting the linear motion block 12 of the transport pallet 11 from the end of the linear motion guide rail 23 in the first guide rail 21.

  Specifically, when mounting the transport pallet 11, the end of the cam plate 18 serving as the operation piece is pushed in the direction of the base 13 to raise the locking member 14, and in this state, the linear motion block 12 is moved. Is mounted from the end of the linear motion guide rail 23 in the first guide rail 21. Thereafter, the pushing-in of the cam plate 18 is canceled, and the urging force of the coil spring 21 causes the connecting member 17 to be positioned at a low position so that the locking member 14 is superposed on the belt 32.

  When the transport pallet 11 is mounted on the first guide rail 21 in this way, the unevenness 14a and 14b provided on the transport pallet 11 is provided along the first guide rail 21 as shown in the enlarged view of FIG. It engages with the irregularities 32 a and 32 b of the circulating belt 32. For this reason, the pallet 11 for conveyance can be conveyed along the 1st guide rail 21 by driving the servomotor 33 which is a drive mechanism after that, and circulating the circulation belt 32. FIG.

  As shown in FIG. 6, this transport is performed until the transport pallet 11 faces each machine tool 1, 2 provided along the first pallet rail 30, and the transport pallet 11 is moved to each machine tool 1, 2. Then, the servo motor 33 is stopped in a state of being opposed to the workpiece, and the workpiece mounted on the transfer pallet 11 is processed by each of the machine tools 1 and 2. At this time, it is possible to simultaneously perform machining by the plurality of machine tools 1 and 2 by conveying the plurality of conveyance pallets 11 at the same pitch as the pitch P of the machine tools 1 and 2.

<First pallet moving process>
In this step, the transfer pallet 11 that has reached the end of the first pallet rail 30 is moved to the second pallet rail 40. This movement is performed by a pallet moving means 61 provided at one end of the first and second pallet rails 30 and 40.

  That is, in the first pallet feeding means 31, the servo motor 33 is stopped when the conveying pallet 11 reaches the end of the first pallet rail 30. On the other hand, in the pallet moving means 61, as shown in FIG. 7, the servo motor 63a in the width direction actuator 63 is driven to move the short rail 62 together with the follower 63c. The linear motion guide rail 23 of the pallet rail 30 is continued.

  In this state, the longitudinal actuator 66 in the pallet moving means 61 moves the follower 66 c to the first pallet rail 30 side, and makes the cam rod 18 of the operation pallet 11 continue the retracting rod 67 a of the operation actuator 67.

  As shown in FIG. 4, in the operation actuator 67, the projecting rod 67 a is protruded and brought into contact with the end of the cam plate 18 serving as the operation piece in the conveying pallet 11, and the cam plate 18 is moved in the longitudinal direction. Thereby, the locking member 14 in the transport pallet 11 is raised and separated from the belt 32.

  Thus, since the transfer pallet 11 of the present invention is provided with the moving mechanism 15 that moves the locking member 14, the locking member 14 is used in the pallet transfer device 28 and the pallet transfer method using the transfer pallet 11. Is simply moved away from the belt 32, which is a moving body provided along the guide rail 23, so that the engagement can be easily released.

  And in the pallet 11 for conveyance of this invention, since the clamping piece 26 which pinches | interposes the operation end part of the cam board 18 which is an operation piece from the front and back of the longitudinal direction of the guide rail 23 was provided in the base 13, such a locking member 14, the retracting rod 67 a of the operation actuator 67 that has pushed the cam plate 18 can be held by the holding piece 26 of the transfer pallet 11, and the transfer member 11 of the transfer pallet 11 is separated from the belt 32. Free movement can be prohibited.

  Therefore, thereafter, as shown in FIG. 8, the longitudinal actuator 66 moves by moving the operation actuator 67 facing the end of the cam plate 18 in a direction away from the first pallet rail 30. It is possible to move the transport pallet 11 that sandwiches the retracting rod 67 a of the actuator 67 from the end of the first pallet rail 30 to the short rail 62.

  After the transport pallet 11 is mounted on the short rail 62, the servo motor 63a of the width direction actuator 63 in the pallet moving means 61 is driven again, and the short rail 62 on which the transport pallet 11 is mounted together with the follower 63c. Is moved away from the first position continuous with the first pallet rail 30, and the short rail 62 is moved to the second position continuous with the linear motion guide rail 23 of the second pallet rail 40 as shown in FIG.

  After the short rail 62 on which the transport pallet 11 is mounted is continuous with the linear motion guide rail 23 of the second pallet rail 40, the longitudinal actuator 66 in the pallet moving means 61 moves the operation actuator 67 as shown in FIG. When the transporting pallet 11 is moved to the second pallet rail 40 side together with the transporting pallet 11, the transporting pallet 11 in which the retracting rod 67a of the operation actuator 67 is sandwiched by the sandwiching piece 26 is It moves to the motion guide rail 23.

  Then, after the transfer pallet 11 has moved to the second pallet rail 40, as shown in FIG. 3, the retracting rod 67 a of the operation actuator 67 is immersed in the housing 67 b, and the locking member 14 is applied by the urging force of the coil spring 21. Is separated from the pedestal 13, superposed on the belt 32 provided along the second pallet rail 40, and engaged with the belt 32.

  As described above, in the transport pallet 11 of the present invention, the moving mechanism 15 that moves the locking member 14 is provided, so that the moving member 15 is moved along the guide rail 23 by moving the locking member 14. By simply superposing the locking member 14 on the belt 32, the locking member 14 can be easily engaged with the belt.

  As a result, the conveying pallet 11 moves from the end of the first pallet rail 30 to the end of the second pallet rail 40, but in the present invention, the locking member 14 is moved to the belt 32 which is a moving body. Since the transfer pallet 11 is moved away from the pallet, the pallet rail 40 is moved to a different pallet rail 40 as compared with a conventional pallet rail that requires the belt speed and position to operate in synchronization with the pallet. Can be easily transferred.

<Second pallet transport process>
In this step, the transfer pallet 11 mounted on the second pallet rail 40 is transferred. In the first pallet moving step in the previous step, as shown in FIG. 10, the transport pallet 11 moved from the short rail 62 to the second pallet rail 40 moves to the end of the second pallet rail 40, and accordingly It will engage with the belt 32 provided.

  In this second pallet transporting process, the transporting pallet 11 mounted on the second pallet rail 40 is transported, so that the transporting pallet 11 is circulated by circulating the belt 32 provided along the second pallet rail 40. Can begin to move in the opposite direction from the end of the second pallet rail 40, and can transport the transport pallet 11 along the second pallet rail 40.

  As shown in FIG. 6, the conveyance along the second pallet rail 40 is performed until the conveyance pallet 11 faces the machine tools 3 and 4 provided along the second pallet rail 40. The servo motor 33 is stopped in a state where the pallet 11 faces the machine tools 3 and 4, and the workpieces mounted on the transfer pallet 11 are processed by the machine tools 3 and 4.

<Second pallet moving process>
In this step, the transfer pallet 11 that has reached the end of the second pallet rail 40 is moved to the first pallet rail 30. This movement is performed by a pallet moving means 61 provided at the other end of the first and second pallet rails 30 and 40. Since the specific moving procedure is the same as the first pallet moving step, repeated description is omitted.

  Thus, by performing each process mentioned above once, each pallet 11 for conveyance can each be conveyed by a track-shaped track in the counterclockwise direction for each one.

  And each time such each process is performed once, in the state which stopped the operation | movement of the pallet conveyance apparatus 28, each machine tool 1-4 is actuated, and each workpiece | work not shown mounted on each pallet 11 for conveyance is carried out. On the other hand, predetermined various processes are performed in parallel. When each of the machine tools 1 to 4 is operated, the work is carried in / out of any one of the transfer pallets 11.

  When a plurality of transfer pallets 11 are mounted on the guide rail 23, the interval between the transfer pallets 11 can be easily changed by shifting the time for transferring the transfer pallets 11. It becomes.

  Next, another pallet conveying apparatus provided with the pallet for conveyance will be described.

  As shown in FIG. 11, this another pallet conveying device 80 is a case where a plurality of pallet rails 30 and 40 provided with the linear motion guide rail 23 are provided continuously in the longitudinal direction. Since the pallet rails 30 and 40 and the pallet feeding means 31 and 41 have the same structure as that in the pallet conveying device 28 described above, repeated description is omitted.

  FIG. 11 shows a case where the first and second pallet rails 30 and 40 are continuously provided in the longitudinal direction, and the transport pallet 11 mounted on one of the first and second pallet rails 30 and 40. A pallet moving means 81 is provided at the ends of the first and second pallet rails 30, 40, that is, at their connection locations.

  As shown in FIGS. 11 to 15, the pallet moving means 81 provided at the joining position of the first and second pallet rails 30 and 40 is a cam plate that protrudes and appears from the main body portion 82 b and is an operation piece of the conveying pallet 11. The first and second pallet rails 30 and 40 are provided with an operation actuator 82 having an in / out rod 82a that can be brought into contact with the end of 18 and an operation actuator 82 in which the in / out rod 82a is held between the holding pieces 26 of the transport pallet 11. The locking member 14 includes a longitudinal actuator 83 that is moved in the longitudinal direction and moves the transporting pallet 11 (FIG. 15) in the detached position from one pallet rail 30 or 40 to the other pallet rail 40 or 30.

  The operation actuator 82 is a fluid pressure cylinder that causes the retracting rod 82a to protrude and retract from the housing 82b by fluid pressure, and the follower of the longitudinal actuator 83 so that the retracting rod 82a is parallel to the cam plate 18 of the conveying pallet 11. It is attached to 83c via a fixture 82c.

  The longitudinal actuator 83 reciprocates the operation actuator 82 in the longitudinal direction of the first and second pallet rails 30 and 40. The longitudinal actuator 83 is a ball screw 83b that is rotationally driven by a servo motor 83a, and a screw screwed to the ball screw 83b. And a follower 83c that moves in parallel, and the follower 83c is movable in the longitudinal direction of the first and second pallet rails 30 and 40. The housing 83d is supported on the frame 9 by a support column 83e (FIGS. 14 and 15). It is attached via.

  Then, as shown in FIG. 12, when the follower 83c moves to one end of the housing 83d, the end of the pallet rail 30 or 40 of either the first or second pallet rail 30, 40 is moved. As shown in FIG. 13, when the follower rod 82a of the operation actuator 82 is continued to the cam plate 18 of the mounted conveying pallet 11 and the follower 83c moves to the other end of the housing 83d, the other pallet is moved. The retracting rod 82a of the operation actuator 82 is configured to be continuous with the cam plate 18 of the conveying pallet 11 mounted on the end of the rail 40 or 30.

  For this reason, in a state where the transport pallet 11 mounted and moved on the first or second pallet rail 30 or 40 reaches the end of the first or second pallet rail 30 or 40, the longitudinal actuator 83 is When the follower 83c is moved to the first or second pallet rail 30 or 40 side, the retracting rod 82a of the operation actuator 82 is continuous with the cam plate 18 of the conveying pallet 11, and as shown in FIG. When the rod 82a is protruded from the housing 82b, as shown in FIG. 15, the cam plate 18 is moved in the longitudinal direction after coming into contact with the end portion of the cam plate 18 serving as the operation piece, thereby conveying the pallet 11 In this case, the locking member 14 is raised to the disengaged position that is raised from the locking position.

  In this way, the locking member 14 that has been raised to the disengagement position is separated from the belt 32, and the engagement is released, and the transport pallet 11 is independent of the belt 32 and the first or second pallet rail. Although it can move along 30 or 40, the conveying pallet 11 is provided with a clamping piece 26 that sandwiches the cam plate 18 as an operation piece, and a retracting rod 82a of the operation actuator 82 that has pushed the cam plate 18 in. Is also held by the holding piece 26. For this reason, even if the locking member 14 is separated from the belt 32, free movement independent of the operation actuator 82 of the conveying pallet 11 is prohibited.

  Accordingly, the operation shaft 82a of the operation actuator 82 facing the end of the cam plate 18 is protruded, the cam plate 18 is moved, and the operation actuator 82 is moved in the longitudinal direction with the locking member 14 being separated from the belt 32. When the actuator 83 moves in the longitudinal direction of the first or second pallet rail 30 or 40, the transport pallet 11 is separated from the end of the first or second pallet rail 30 or 40 as shown in FIG. 13. The second or first pallet rail 40 or 30 is moved.

  As described above, when the retracting rod 82a of the operation actuator 82 is retracted into the housing 82b after the transport pallet 11 has moved to another second or first pallet rail 40 or 30, as shown in FIG. Due to the urging force of 21, the locking member 14 is separated from the pedestal 13, superposed on the belt 32 provided along the first or second pallet rail 30 or 40, and is engaged with the belt 32. . Therefore, by subsequently circulating the belt 32, the transport pallet 11 can be transported along the first or second pallet rail 30 or 40.

  A pallet conveying method in another pallet conveying apparatus configured as described above will be described.

  Even in the pallet conveying method in the other pallet conveying device 80, the pallet conveying method is such that the conveying pallet 11 is mounted on a plurality of linear motion guide rails 23 and moved. The pallet 11 for conveyance is provided by locking the locking member 14 to a movable body mounted on the rail 23 and provided along the linear motion guide rail 23, in this embodiment, an endless belt 32. Is moved, the locking member 14 is detached from the belt 32 which is the moving body, and is moved from one linear motion guide rail 23 to another linear motion guide rail 23.

  However, in this another pallet conveying apparatus 80, since a plurality of pallet rails 30 and 40 are continuously provided in the longitudinal direction, the pallet conveying method using this another pallet conveying apparatus 80 is one pallet rail. A first pallet conveying step for conveying the conveying pallet 11 mounted on the first pallet rail 30 and the conveying pallet 11 reaching the end of the first pallet rail 30 to the first pallet rail 30. To the second pallet rail 40 that is continuous with the first pallet rail 30, and the pallet for transport 11 that has moved to the second pallet rail 40 along the second pallet rail 40. A second pallet transporting step for transporting.

  Each step will be described in detail below.

<First pallet transport process>
In this step, the transport pallet 11 mounted on the first pallet rail 30 is transported along the first pallet rail 30. That is, as shown in FIG. 14, the first pallet rail 30 is mounted on the transport pallet 11, and the locking member 14 in the transport pallet 11 is superposed on a belt 32 provided along the first pallet rail 30. Then, the projections and recesses 14 a and 14 b formed on the locking member 14 are locked to the projections and recesses 32 a and 32 b of the belt 32.

  Then, by driving the servo motor 33 (FIG. 11) in the first pallet feeding means 31 and circulating the belt 32, the transport pallet 11 having the locking member 14 locked to the belt 32 is moved to the first pallet feeding means 31. It is conveyed along one pallet rail 30.

<Pallet moving process>
In this step, the transfer pallet 11 that has reached the end of the first pallet rail 30 is moved from the first pallet rail 30 to another second pallet rail 40 that is continuous with the first pallet rail 30. This movement is performed by a pallet moving means 81 provided between the first and second pallet rails 30 and 40.

  That is, in the first pallet feeding means 31, the servo motor 33 is stopped when the conveying pallet 11 reaches the end of the first pallet rail 30. On the other hand, in the pallet moving means 81, the longitudinal actuator 83 moves the follower 83c to the first pallet rail 30 side, and the retracting rod 82a of the operation actuator 82 is attached to the cam plate 18 of the conveying pallet 11. Make it continuous.

  Then, as shown in FIG. 12, the protruding and retracting rod 82a is protruded from the housing 82b, and the cam plate 18 serving as the operation piece is moved in the longitudinal direction. As shown in FIG. The member 14 is raised to the disengagement position that is raised from the locking position, and the locking member 14 is separated from the belt 32 to release the engagement. At the same time, the retracting rod 82 a of the operation actuator 82 that has pushed the cam plate 18 is held between the holding pieces 26 in the conveying pallet 11.

  As shown in FIG. 13, the longitudinal actuator 83 is formed in such a manner that the projecting shaft 82 a of the operation actuator 82 facing the end of the cam plate 18 is projected and the locking member 14 is separated from the belt 32. However, by moving the operation actuator 82 in the longitudinal direction of the first and second pallet rails 30, 40, the transfer pallet 11 sandwiching the retracting rod 82 a of the operation actuator 82 is separated from the end of the first pallet rail 30. Move to the second pallet rail 40.

  Thus, after the transport pallet 11 has moved to another second pallet rail 40, as shown in FIG. 14, the retracting rod 82a of the operating actuator 82 is retracted into the housing 82b, and the biasing force of the coil spring 21 Then, the locking member 14 is separated from the pedestal 13, superposed on the belt 32 provided along the second pallet rail 40, and locked to the belt 32.

<Second pallet transport process>
In this step, the transfer pallet 11 moved to the other second pallet rail 40 is transferred along the second pallet rail 40. That is, the transport pallet 11 is mounted on the second pallet rail 40, and the second pallet is in a state where the locking member 14 is overlapped and locked to the belt 32 provided along the second pallet rail 40. By driving the servo motor 33 (FIG. 11) in the feeding means 41 and circulating the belt 32, the transport pallet 11 having the locking member 14 locked to the belt 32 is moved to the second pallet rail 40. Transport along.

  As described above, in the pallet conveying method using the other pallet conveying device 80, the plurality of pallet rails 30 and 40 are continuously provided in the longitudinal direction. It is preferable when transporting a relatively long distance, such as between a standby table (not shown) to a machine tool, between each machine tool, or between a machine tool and a standby table. It is also possible to vary the conveyance speed in each of the pallet rails 30 and 40.

  As described above, in another pallet conveying device 80 and pallet conveying method using the conveying pallet 11, the locking member 14 is moved to engage with the belt 32 which is a moving body provided along the guide rail 23. The stop member 14 is separated and moved from the first pallet rail 30 to the second pallet rail 40. After that, the lock member 14 is overlapped with the belt 32, which is a moving body, and then the lock member 14 is moved to the belt. 32 can be easily engaged.

  As a result, the conveying pallet 11 moves from the end of the first pallet rail 30 to the end of the second pallet rail 40, but in the present invention, the locking member 14 is moved to the belt 32 which is a moving body. Since the transfer pallet 11 is moved away from the pallet, the belt speed and position are moved to a different rail when compared with the conventional one that needs to operate in synchronization with the pallet. It becomes possible to perform loading easily.

  Further, in this another pallet transport device 80, the longitudinal actuator 83 moves the transport pallet 11 from one guide rail 23 to the other guide rail 23, so that a plurality of transport pallets 11 are placed on the guide rail 23. When mounted, the locking member 14 of one of the transport pallets 11 is disengaged from the moving body 32, and the one transport pallet 11 or another transport pallet 11 is moved along the guide rail 23. By doing so, the interval between one transfer pallet 11 and the other transfer pallet 11 is changed, so that the interval (pitch) between the plurality of transfer pallets 11 can be easily changed.

  In this another pallet conveying device 80, although the operation actuator 82 and the longitudinal actuator 83 are provided at the joint portion of the guide rail 23, in view of the fact that the pitch of the plurality of pallet for transportation 11 can be changed, FIG. As shown, the operation actuator 82 and the longitudinal actuator 83 may be provided in the middle of the guide rail 23.

  As described above, even when using the pallet transport device 90 in which the operation actuator 82 and the longitudinal actuator 83 are provided in the middle of the guide rail 23, the pallet transport method for mounting and moving a plurality of transport pallets 11 on the guide rail 23 is as follows. The plurality of transport pallets 11 are moved by mounting the plurality of transport pallets 11 on the guide rails 23 and locking the locking members 14 to the moving bodies 32 provided and moved along the guide rails 23. It will be a thing.

  Even in the pallet transport device 90, the plurality of transport pallets 11 mounted on the guide rail 23 can be moved by moving the locking member 14 of one transport pallet 11 away from the mobile body 32. The belt 32 can be moved while mounted on the guide rail 23 regardless of the movement of the belt 32. For this reason, in the state in which the plurality of transport pallets 11 are mounted on the guide rail 23, one transport pallet 11 or another transport pallet 11 is moved along the guide rail 23, thereby It becomes possible to easily change the pitch G of the plurality of transfer pallets 11 by changing the interval between the pallet 11 and the other transfer pallets 11.

  Further, the transport pallet 11 of the present invention is provided with an operation piece 18 in which the moving mechanism 15 extends in the width direction, and is provided with a clamping piece 26 that sandwiches the operation end from the front and rear in the longitudinal direction of the guide rail 23. , 80, 90 have the retracting rods 67a, 82a sandwiched between the sandwiching pieces 26, so that the longitudinal actuators 66, 83 have the retracting rods 67a, 82a attached to the sandwiching pieces 26. It is possible to move the transport pallet 11 in the longitudinal direction of the guide rail 23 simply by moving the sandwiched operation actuators 67 and 82. The longitudinal actuators 66 and 83 directly lock the transport pallet 11 or the like. Therefore, it is possible to eliminate the need for a structure that can be moved.

  Further, the conveying pallet 11 of the present invention is provided with the locking members 14 having the uneven portions 14a and 14b on both sides of the linear motion block 12 below the pedestal 13, and the pallet conveying devices 28, 80 and 90 are respectively Since the belt 32 which becomes a moving body which circulates and moves on both sides of the support plate 29 to which the guide rail 23 is attached is provided and the belts 32 on both sides are formed with irregularities 32a and 32b, the locking member 14 is formed. By simply superposing each of them, the conveying pallet 11 and the belt 32 can be relatively firmly locked, and the conveying pallet 11 can be made to follow the movement of the belt 32 reliably. As a result, even if the belt 32 is moved or stopped at a relatively high acceleration, the conveyance pallet 11 can reliably follow the movement, and the conveyance speed of the conveyance pallet can be reliably increased.

  In the above-described embodiment, the case has been described in which the locking members 14 are provided on both sides of the lower portion of the pedestal 13 so as to be relatively firmly locked to the moving body 32. As long as the movement can be followed, the locking member 14 may be provided only on one side. Further, the moving body is not limited to the belt 32 as long as the locking member 14 can be locked, and may be another member.

  In the embodiment described above, fluid pressure cylinders are used as the operation actuators 67 and 82, and the servomotors 63a, 66a, and 83a are driven as the longitudinal direction actuators 66 and 83 and the width direction actuator 63 to drive the followers 63c, Although the case where what moves 66c and 83c is used was described, these are only examples, and as an operation actuator, a servomotor is driven to move a follower, and a longitudinal actuator and a width direction actuator are used. A fluid pressure cylinder may be used.

DESCRIPTION OF SYMBOLS 11 Pallet for conveyance 12 Linear motion block 13 Base 14 Locking member 14a, 14b Concavity and convexity 15 Movement mechanism 18 Operation piece 23 Guide rail 26 Clamping piece 28, 80, 90 Pallet conveyance device 32 Belt (moving body)
32a, 32b Concavity and convexity 33 Servo motor (moving means)
62 Short rail 63 Width direction actuator 67, 82 Operation actuator 66, 83 Long direction actuator

Claims (10)

A linear motion block (12) configured to be movable on the guide rail (23), a pedestal (13) to which the linear motion block (12) is attached, and a locking member provided on the pedestal (13) (14), and the movable body (32) provided along the guide rail (23) is moved on the guide rail (23) by locking the locking member (14). For pallets,
Provided is a moving mechanism (15) for reciprocating between a locking position where the locking member (14) is locked to the moving body (32) and a disengaging position where the locking member (14) is separated from the moving body (32). A pallet for transportation characterized by   The linear motion block (12) is attached to the lower part of the pedestal (13), and the locking member (14) is perpendicular to the guide rail (23) at the lower part of the pedestal (13) across the linear motion block (12). The pallet for conveyance according to claim 1 provided on both sides of each.   The moving mechanism (15) includes an operation piece (18) extending in the width direction perpendicular to the guide rail (23), and the operation end of the operation piece (18) is disposed on the pedestal (13) in the longitudinal direction of the guide rail (23). The pallet for conveyance according to claim 1 or 2, further comprising a clamping piece (26) sandwiched from the front and rear. A conveying pallet (11) according to any one of claims 1 to 3,
A guide rail (23) for movably mounting the transport pallet (11),
A movable body (32) configured to be movable along the guide rail (23) and configured to be capable of locking the locking member (14) of the transport pallet (11);
Moving means (33) for moving the moving body (32);
An operation actuator (67, 82) that can operate the moving mechanism (15) of the transport pallet (11) to bring the locking member (14) into a disengaged position;
Longitudinal actuators (66, 83) for moving the conveying pallet (11) in the longitudinal direction of the guide rail (23) when the locking member (14) is in the detached position;
A pallet transporting device. The moving body is a belt (32) in which irregularities (32a, 32b) extending in the width direction are alternately and continuously formed in the longitudinal direction,
Concavities and convexities (14a, 14b) that can be engaged with the irregularities (32a, 32b) are formed on the locking member (14),
When the conveying pallet (11) is mounted on the guide rail (23), the unevenness (14a, 14b) of the locking member (14) at the locking position is the unevenness (32a, 32b) of the belt (32). Engaging
The pallet transport device according to claim 4, wherein the unevenness (14a, 14b) of the locking member (14) at the disengagement position is separated from the unevenness (32a, 32b) of the belt (32). The movement mechanism (15) of the transport pallet (11) extends in the width direction orthogonal to the guide rail (23), and includes an operation piece (18) that moves in the width direction to move the locking member (14).
The operation actuator (67, 82) has a retracting rod (67a, 82a) that can protrude from the housing (67b, 82b) and come into contact with the operation end of the operation piece (18),
A clamping piece (26) is provided on the pedestal (13) of the transport pallet (11) to sandwich the operation end of the operation piece (18) from the front and rear in the longitudinal direction of the guide rail (23),
Longitudinal actuators (66, 83) are arranged such that the operating rails (67, 82) having the projecting rods (67a, 82a) sandwiched between the clamping pieces (26) are moved together with the conveying pallet (11) and the guide rails (23 The pallet transport device according to claim 4 or 5, wherein the pallet transport device is configured to move in the longitudinal direction. A plurality of guide rails (23) for movably mounting the transport pallet (11) are provided in the longitudinal direction,
An operating actuator (67, 82) and a longitudinal actuator (66, 83) are provided at the joint of the guide rail (23),
The longitudinal actuators (66, 83) are the other guides that continue from the one guide rail (23) to the one guide rail (23) through the conveying pallet (11) with the locking member (14) in the disengaged position. The pallet transport device according to any one of claims 4 to 6, wherein the pallet transport device is configured to move to a rail (23). A pair of guide rails (23) for movably mounting the transport pallet (11) is provided in parallel with each other at a predetermined interval in the horizontal direction,
A short rail (62) on which the transfer pallet (11) can be mounted, a first position where the short rail (62) is continuous with one guide rail (23), and a second position where the short rail (62) is continuous with the other guide rail (23). A width direction actuator (63) that moves between two positions,
The width direction actuator (63) is configured to move the operation actuator (67) and the longitudinal direction actuator (66) together with the short rail (62),
The longitudinal actuator (66) moves the conveying pallet (11) from the one or the other guide rail (23) to the short rail (62) or the short rail when the locking member (14) is in the disengaged position. The pallet transport device according to any one of claims 4 to 6, wherein the pallet transport device is configured to move from (62) to the one or other guide rail (23). A pallet transport method for moving a plurality of transport pallets (11) according to any one of claims 1 to 3 mounted on a guide rail (23),
A plurality of the transfer pallets (11) are mounted on the guide rail (23), and the locking members (14) are respectively locked to the moving bodies (32) that are provided along the guide rail (23) and move. To move the plurality of transport pallets (11),
The locking member (14) of one transport pallet (11) is detached from the movable body (32), and the one transport pallet (11) or the other transport pallet (11) is moved to the guide rail (23). ) To change the distance between the one transport pallet (11) and the other transport pallet (11). A pallet carrying method for mounting and moving the carrying pallet (11) according to any one of claims 1 to 3 on a plurality of guide rails (23),
The transport pallet (11) is mounted on the guide rail (23) and the transport member (14) is locked by a moving body (32) provided along the guide rail (23). Move the pallet (11) for
The pallet conveying method, wherein the locking member (14) is detached from the moving body (32) and moved from one guide rail (23) to another guide rail (23).

Images