WO2011108071A1 - Carriage conveyance device - Google Patents

Abstract

A carriage conveyance device which smoothly and quickly conveys molding flasks and molds, comprises a simple and inexpensive mechanism, and can reduce facility costs. A carriage conveyance device comprises: movement bodies (20, 22) which are provided corresponding to a first conveyance path (6) and a second conveyance path (8) and which reciprocate a given distance along the conveyance paths; loading-side engagement means (78) which are each provided to the upstream end position side of each of the movement bodies, the loading-side engagement means (78) being configured so that, when the movement body (20) advances to the downstream side of one (6) of the conveyance paths, the loading-side engagement means (78) engages with a carriage (4), which is located at a loading position of said conveyance path (6), and so that, when the movement body (20) recedes to the upstream side of said conveyance path (6), the loading-side engagement means (78) disengages from the carriage (4); unloading-side engagement means (80) which are each provided to the downstream end position side of each of the movement bodies (20, 22), the unloading-side engagement means (80) being configured so that, when the movement body (20) advances to the downstream side of said conveyance path (6), the unloading-side engagement means (80) engages with a carriage (4), which is located at the downstream end position of said conveyance path (6), to restrict the free movement of carriages in the downstream direction; and a drive means (28) which reciprocates the movement body (20) a given distance.

Description

Dolly carrier

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a carriage transport apparatus for placing and transporting molds and flasks in a casting line.

Conventionally, in a casting line, in order to convey a plurality of flasks and molds continuously, a plurality of carriages on which the flasks and molds are placed are arranged in series. However, when the bogies arrayed collide with one another when transporting a form (mold) and produce an impact, or when rapid acceleration of transport start or rapid deceleration of transport stop generates strong inertial force, the bogies The mold placed on the board causes problems such as mold loss and core collapse. Therefore, it has been necessary to transport the carriage without giving a shock or strong inertia to the mold as much as possible.

According to Patent Document 1 considered as a device for conveying a group of carriages arranged without giving such an impact or a strong penetrability, a plurality of carriages on which the flasks are respectively mounted can be moved to the carriage conveyance rails The Traverser is placed at the loading position adjacent to the upstream end position of the carriage transport rail and at the unloading position adjacent to the downstream end position, and the truck positioned at the loading position is pushed from the loading position to the upstream end position. An electric servo-type push-out cylinder and an electric servo-type cushion that abuts on a carriage located at the downstream end position to reduce the speed at which the carriage moves from the downstream end position to the delivery position (simultaneously the speeds of multiple carriages on the transport rail) It is described to provide a cylinder.

Further, according to Patent Document 2, the loading side engaging body and the unloading side engaging body are mounted on a movable body reciprocated by a fixed amount, and the molding side in which the loading side engaging body is positioned at the loading position is pushed downstream. To move the movable body forward by a fixed amount while engaging with the flask and engaging with the flask for restricting the downstream movement of the downstream-side engaging body on the downstream side. It is described that the carry-in position, the downstream end position, and a plurality of flasks positioned between the two positions are transported by a fixed amount.

Utility Model Registration No. 2559334 Patent publication 2004-82146 gazette

However, in Patent Document 1, it is necessary to provide an expensive electric servo-type cushion cylinder in order to reduce the moving speed of a plurality of carriages pushed by the electric servo-type extrusion cylinder at the time of frame transfer. Increases. In addition, a large space is required to install the elongated electric servo-type extrusion cylinder and the cushion cylinder in series outside the loading position and the unloading position, which may cause troubles in the work path. Further, in the control of the electric servo-type extrusion cylinder and the electric servo-type cushion cylinder, an encoder for detecting the moving distance of the rod advanced / retracted by the inverter motor via the feed screw mechanism, an excitation voltage applied to the inverter motor There is a problem that an inverter for converting the frequency and a control device for controlling the encoder and the inverter in association with each other are required for each cylinder, and control and adjustment of these facilities takes time and labor, and facility costs also increase. there were.

Patent Document 2 is an excellent technique for solving the problems in the case of using an electric servo-type extrusion cylinder and an electric servo-type cushion cylinder, and providing a simple and inexpensive configuration. However, in the casting line, after pouring the molten metal into the mold, it is necessary to secure a long cooling time, and there are cases where a large number of transport rail rows are arranged for that purpose. In this case, there is a problem that the same drive device needs to be provided for each of the transport rails arranged in multiple rows, which increases the equipment cost.

The present invention has been made in view of such conventional problems, and its object is to carry a flask and a mold smoothly and quickly by a plurality of carriages arranged in a conveyance path, and to constitute by a simple and inexpensive mechanism An object of the present invention is to provide a carriage conveyance device capable of reducing the cost of equipment by performing conveyance of carriages in a plurality of conveyance paths with one drive device.

The structural feature of the invention according to claim 1 is that the plurality of carriages on which the flask or mold is placed is continuously disposed between the upstream end position and the downstream end position and conveyed in a predetermined direction. A transport path, and a plurality of carriages provided parallel to the first transport path and on which a frame or mold is placed are continuously disposed between the upstream end position and the downstream end position, and are directed in the opposite direction to the predetermined direction. A second transport path to be transported, a first unloading position aligned with the downstream end position of the first transport path, and a second load-in aligned with the first transport position and aligned with the upstream end position of the second transport path And a second unloading position aligned with the downstream end position of the second transport path, and a first loading position aligned with the second unloading position and aligned with the upstream end position of the first transport path Between the carry-out position for reciprocating the carriages in parallel and for transporting the carriages respectively to the carry-in position And a carriage transfer device comprising: a movable body provided corresponding to the first conveyance path and the second conveyance path and reciprocating along a fixed distance along each conveyance path; The moving body is provided on the upstream end position side of the transport path and the second transport path, and the movable body advances from the upstream side to the downstream side of any one of the first transport path and the second transport path. A carry-in engagement that engages with a carriage positioned at the carry-in position of one of the conveyance paths, and releases the engagement with the carriage when the movable body retracts from the downstream side to the upstream side of the one conveyance path Means, and provided on the downstream end position side of the first transport path of the movable body and the second transport path, the movable body being upstream of the one transport path of the first transport path and the second transport path And engaging the carriage at the downstream end position of the one transport path when advancing from the side to the downstream side Is that comprising a carry-out side engagement means for restricting the free movement of the downstream direction of said plurality of carriages, and a driving device for a certain amount reciprocating the movable body.

The structural feature of the invention according to claim 2 is that, in claim 1, the carriage is provided with a carriage-side front engagement projection provided at the front of the carriage in the conveyance direction, and a rear portion in the conveyance direction of the carriage And a carriage-side rear engagement projection provided at a position shifted to one side in a direction orthogonal to the conveyance direction with respect to the carriage-side front engagement projection; A carry-in position side moving unit which moves oppositely between the carry-in position and the upstream end position, and a carry-out position side moving unit which moves oppositely between the carry-out position of each conveying path and the downstream end position The carry-in engagement means is engaged with the carriage-side front engagement projection of the carriage provided at the carry-in position-side moving unit of the movable body and positioned at the carry-in position from the upstream side , And the delivery side engagement means is configured to The carriage side rear engagement projection of the carriage provided at a position shifted to one side in a direction orthogonal to the transport direction with respect to the carry-in engagement projection in the position-side moving unit and positioned downstream of the carriage It is that it has the carrying out side engagement protrusion engaged by contacting more.

The configurational feature of the invention according to claim 3 is that in claim 1 or 2, the drive device carries a crank arm, an inverter control motor for giving a rotational motion to the crank arm, and a rotational motion of the crank arm. And b. A motion converter for converting linear motion in a direction.

The structural feature of the invention according to claim 4 is that, in any one of claims 1 to 3, the distance between the carry-in engagement means and the carry-out engagement means is the carry-in side. The distance from the engaged position of the carriage located at the loading position engaged by the engagement means to the engaged position of the carriage situated at the downstream end position engaged by the discharge side engaging means is a predetermined length The driving device is configured to advance the moving body from the upstream side to the downstream side of the corresponding transport path together with the carriage located at the downstream end position and the carriage following the carriage. And stopping the subsequent carriage at the downstream end position by stopping the movable body at a temporary stop position before the discharge position side stop position of the movable body corresponding to the discharge position of the transport path, and then moving Move the body to the unloading position stop position A movement control means is provided, and when the movable body moves to the temporary stop position, the carriage taken out of the downstream end position by the movable body is moved from the subsequent carriage positioned at the downstream end position at the discharge position. A biasing means is provided to separate the two.

According to the invention of claim 1, when moving the moving body corresponding to any one of the first and second conveying paths forward from the upstream side to the downstream side by the driving device, the upstream side of the moving body A carry-in engagement means provided at the end position side engages with the carriage at the carry-in position of the one conveyance path, and a carry-out engagement means provided at the downstream end position of the movable body is the above It engages with the carriage at the downstream end position of one of the transport paths so as to restrict free movement in the downstream direction. Therefore, the plurality of carriages arranged in the one conveyance path are the carriages positioned at the carry-in position of the one conveyance path engaged with the carry-in engagement means of the movable body corresponding to the one conveyance path With the carriage held at the downstream end position of the one conveyance path engaged with the discharge side engagement means, the advancing of the moving body corresponding to the one conveyance path from the upstream side to the downstream side Is collectively transported downstream by a fixed amount. In synchronization with the movement of the movable body corresponding to the one conveyance path, in the other conveyance path of the first conveyance path and the second conveyance path, the movement body corresponding to the other conveyance path is engaged with the carriage Withdrawal from the downstream side to the upstream side of the other transport path.

Then, when the movable body corresponding to the other transport path in the other transport path advances with the carriage engaged from the upstream side to the downstream side, the one of the one transport paths is synchronized in synchronization. The movable body corresponding to the transport path is retracted from the downstream side to the upstream side in a state where the engagement with the carriage is released.

In this manner, the driving device for advancing and retracting the movable bodies corresponding to the first transport path and the second transport path is a movable body in a predetermined direction (for example, a direction for advancing from the upstream side to the downstream side in the first transport path) The carriage transports the carriage in the first transport path by movement, and the carriage in the second transport path is transported by the movement of the movable body in the direction opposite to the predetermined direction (for example, the backward direction in the first transport path). it can. Therefore, it is possible to efficiently transport the carriages in a plurality of transport paths with a minimum operation without waste by a single drive device without providing a drive for each transport path as in the prior art, and the drive is installed. Space saving and cost reduction of facilities can be achieved.

In addition, when the carriages are transported along the first transport path and the second transport path, the plurality of carriages arranged in each transport path are moved corresponding to the one transport path or the other transport path. The carriage is transported while being nipped from the upstream side and the downstream side by the loading side engaging means and the unloading side engaging means of the body, so that the impact due to the collision between the arranged carriages is prevented and the carriage is conveyed safely. be able to.

According to the invention of claim 2, the carry-in side engaging projection provided on the carry-in position side moving portion of the movable body is the bogie side of the carriage positioned at the carry-in position when the movable body advances from the upstream side to the downstream side The front engagement projection is engaged from the upstream side, and when the movable body is retracted from the downstream side to the upstream side, the engagement with the front side engagement projection of the carriage is released.

On the other hand, when the moving body advances from the upstream side to the downstream side, the carry-out side engaging protrusion provided on the carry-out position side moving portion of the moving body moves to the carriage side rear engaging protrusion of the bogie located at the downstream end position Since engagement is achieved by abutting from the downstream side, the free movement of the plurality of carriages arranged in the transport path to the downstream side is restricted. Further, the carry-out side engaging projection is provided at a position shifted to one side in the direction orthogonal to the carrying direction with respect to the carry-in side engaging projection, and the carriage side front engagement with which the carry-in side engaging projection engages Since it does not engage with the projection, when the mobile unit retracts from the downstream side to the upstream side, only the mobile unit is moved upstream without being caught in the front of the carriage newly transported to the downstream end position. Can.

As described above, the loading-side engaging protrusion and the unloading-side engaging protrusion are engaged by providing the loading-side engaging protrusion and the discharging-side engaging protrusion at positions mutually offset in the direction orthogonal to the transport direction of the carriage. Also, it is not necessary to provide a mechanism for advancing and retracting the engagement, and it becomes possible to construct a carriage transport apparatus having an extremely simple engagement structure, thereby achieving a large reduction in equipment cost. it can.

According to the invention of claim 3, the rotational movement of the crank arm given by the inverter control motor is converted into the linear movement in the transport direction by the movement converting device to reciprocate the moving body. By setting the crank arm to a substantially horizontal position at the start and end positions where it swings, the speed component in the transfer direction becomes small and the low speed transfer is performed, and the crank arm passes through the dead center (top dead center or bottom dead center) In this case, the speed component in the transport direction becomes large, resulting in high-speed transport. Therefore, at the time of acceleration / deceleration, a large acceleration force accompanying acceleration and a large inertia force accompanying deceleration are not generated, and the mold placed on the carriage can be safely transported without breakage, and the above-mentioned death occurs during transportation As the portion passing the point can be transported at high speed, efficient and rapid transport can be performed. In addition, although the inverter control motor generally has a longer acceleration / deceleration time and longer stoppage accuracy after deceleration as compared with a servomotor, in a mechanism using a crank arm, as described above, the acceleration start point and the deceleration At the end point to be performed, the speed component in the transport direction with respect to the rotational speed is small. Therefore, the accuracy deviation of the rotation angle at the time of acceleration / deceleration has a small value that affects the positional deviation in the transport direction, and it is possible to drive the moving body with sufficient accuracy to withstand use. Further, even in the event of a failure of the motor unit, the inverter control motor can be easily obtained with a relatively short delivery time, and for example, the stop of the production line for replacing the motor unit can be ended in a short time.

According to the invention of claim 4, the distance between the carry-in engagement means and the carry-out engagement means is the carry-out side from the engaged position of the carriage positioned at the carry-in position where the carry-in engagement means engage. A clearance of a predetermined length is set longer than the distance to the engaged position of the carriage located at the downstream end position where the engagement means engages. Then, using the gap of this predetermined length, a gap is provided between the carriage carried out from the downstream end position and the following carriage.

For this purpose, while advancing the movable body, the drive control means first causes the movable body to stop at the temporary stop position in front of the unloading position side stop position facing the discharge position of the transport path. The carriage carried out from the downstream end position is biased at a position where it is temporarily stopped and is separated from the carriage following it, and the movement toward the downstream side is restricted by the carry-out side engagement means and stopped . Next, by moving the movable body forward toward the discharge position side stop position again, the restriction on the downstream side by the discharge side engagement means for the carriage carried out from the downstream end position is released, and at the same time, the downstream end position The carriage taken out of the carriage moves following the delivery engagement means by biasing by the biasing means, so that a gap is generated between the carriage and the following carriage, and this clearance is generated and positioned at the delivery position Ru.

As described above, since the carriages transported to the unloading position are positioned with a gap to the carriages located on the upstream side adjacent to each other (the subsequent carriages that are newly located at the downstream end position), In the unloading from the unloading position performed by the traverser to the parallel loading position, it is possible to smoothly transport without contacting the carriage at the adjacent downstream end position.

BRIEF DESCRIPTION OF THE DRAWINGS The plane outline figure which shows 1st Embodiment of the trolley | bogie conveyance apparatus of this invention. The front schematic diagram of a trolley | bogie conveyance apparatus. The top view which partially expands and shows FIG. The front view which expands and shows FIG. 2 partially. The figure which shows the VV cross section in FIG. FIG. 6 is a view showing a VI-VI cross section in FIG. The figure which shows the VII-VII cross section in FIG. The top view which shows the state which advances a 1st mobile body and positions it in a 1st delivery position. The front view which shows the state which advances a 1st mobile body and positions it in a 1st delivery position. The enlarged view which shows the state which suspended the 1st mobile body in the front of the position corresponding to a 1st delivery position. The positioning enlarged view which shows the state which positions the trolley | bogie which had advanced the 1st mobile body again and was in the downstream end position in a 1st unloading position. The top view which shows the process of transferring a trolley | bogie to a 2nd carrying-in position by a 2nd traverser. The top view which shows the state which advances a 2nd mobile body and positions it in a 2nd delivery position. The plane outline figure showing the 2nd embodiment of the bogie transport device of the present invention. The plane outline figure showing a 3rd embodiment of the bogie transport device of the present invention. The figure which shows the state which advances the mobile in a 1st and 2nd 1st conveyance way, and it positions in a delivery position. The figure which shows the state in which the trolley | bogie was carried in to the carrying in position of the 1st and 2nd 2nd conveyance way by the traverser. The figure which shows the state which advances the mobile in a 1st and 2nd 2nd conveyance way, and it positions in a delivery position. The plane outline figure showing the 4th embodiment of the bogie conveyance device of the present invention. The front view of a trolley | bogie conveyance apparatus. The plane outline figure showing a 5th embodiment of the bogie transport device of the present invention. The front view of a trolley | bogie conveyance apparatus. FIG. 23 is a cross-sectional view taken along line XXIII-XXIII in FIG. XXIV-XXXIV sectional drawing in FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bogie transport apparatus according to the present invention will be described below based on the drawings in which a bogie transport apparatus for transporting a flask and a mold in a casting line according to a first embodiment is described. The carriage conveying device 2 of the present embodiment is provided parallel to the first conveyance path 6 for conveying the carriage 4 in the left direction in FIG. 1 and the first conveyance path 6 and conveys the carriage 4 in the right direction in FIG. Between the first delivery position 11 aligned with the downstream end position 10 of the first conveyance path 6 and the second delivery position 13 aligned with the upstream end position 12 of the second conveyance path 8, 2) a first transferer 18 provided between the second delivery position 15 aligned at the downstream end position 14 of the transfer path 8 and the first transfer position 17 aligned at the upstream end position 16 of the first transfer path 6; A first movable body 20 provided below the path 6 and reciprocating along the transport direction, a second movable body 22 provided below the second transport path 8 reciprocally along the transport direction, and a first movement Crank arms 24, 26 linked to the body 20 and the second moving body 22, and a crank arm And an inverter control function motor 28 for rotating the 4,26.

On the base 30, as shown in FIG. 2, a pair of carriage rails 32 mainly constituting the first conveyance path 6 are provided, and a mold or a frame (not shown) is placed on the carriage rails 32. A plurality of carriages 4 are arranged in the transport direction. The pair of carriage rails 32 is laid corresponding to the upper end outside of the pair of I-shaped beams 34 extending in the transport direction, and the pair of I-shaped beams 34 are supported by a plurality of columns 36 protruding from the base 30 The carriage rail 32 is elevated.

Similarly to the first conveyance path 6, the second conveyance path 8 provided in parallel to the first conveyance path 6 is provided with a pair of bogie rails 32 mainly configuring the second conveyance path 8 (see FIG. 5). A plurality of bogies 4 on which a mold or a frame (not shown) is placed on the bogie rails 32 are arranged in the transport direction. The pair of carriage rails 32 is laid corresponding to the upper end outside of the pair of I-shaped beams 34 extending in the transport direction similarly to the first transport path 6 (see FIG. 5), and the pair of I-shaped beams 34 It is supported by a plurality of columns 36 protruding from the base 30, and the carriage rail 32 is formed in an elevated shape.

The first loading position 17 aligned at the upstream end position 16 of the first transport path 6 and the second unloading position 15 aligned at the downstream end position 14 of the second transport path 8 are shown in FIGS. 1, 2 and 3. As shown in FIG. 4 and FIG. 4, a first transfer rail 38 connecting the first loading position 17 and the second unloading position 15 is disposed. The first loading position 17 and the second unloading position 15 are arranged in parallel, and the first transfer rail 38 extends in a direction perpendicular to the first transport path 6 and the second transport path 8. At the first loading position 17 on the first transfer rail 38, the carriage 4 is placed, and a transport carriage 40 which moves in a direction perpendicular to the transport direction is positioned. The transfer carriage 40 is aligned with the carriage rail 32 on the transfer wheel 42 rolling on the first transfer rail 38, the transfer base 44 on which the transfer wheel 42 is rollably supported, and the transfer base 44. And a transfer base rail 46 provided (see FIG. 4). When the transfer carriage 40 on which the carriage 4 is placed is located at the first loading position 17, the transfer carriage rail 46 is aligned with the carriage rail 32, and the carriage 4 placed on the transfer carriage rail 46 is the carriage rail of the first transport path 6 A plurality of carriages 4 placed on the surface 32 and a predetermined gap t are provided and arranged (see FIG. 3).

As shown in FIG. 4, a protrusion support portion 48 is provided on the upper surface of the transfer base 44 on the transport path side, and one end portion of a rod-like member 50 extending along the transfer base rail 46 is provided on the protrusion support portion 48. The transfer table rail 46 is rotatably connected by a rotational shaft perpendicular to the transfer rail 46. At the other end of the rod-like member 50, a disk-shaped rotating member 52 having a rotation axis perpendicular to the transfer stand rail 46 is rotatably provided, and at the other end of the intermediate portion of the rod-like member 50, a coil spring 54 is provided. Is provided. The coil spring 54 is disposed between the lower surface of the rod-like member 50 and the upper surface of the transfer base 44 and configured to bias the other end of the rod-like member 50 upward. A stopper 56 is provided at the end of the transfer stand rail 46 (the end opposite to the transport path), and the carriage 4 is provided between the stopper 56 and the rotating member 52 provided at the other end of the rod 50. The carriage 4 is positioned at the delivery position 11 by holding the rolling wheel 102 and the bearing unit 100 described later. A biasing means 57 is constituted by the projecting support portion 48, the rod-like member 50, the coil spring 54 and the rotating member 52. A first traverser 55 as a traverser is constituted by the first transport rail 38 and the transport carriage 40 (see FIGS. 3 and 4). In addition, the stop position when the first movable body 20 transports the carriage 4 from the downstream end position 10 to the first unloading position 11, that is, the unloading position side stop position 59 of the first movable body 20 corresponding to the first unloading position 11. Are positioned at the downstream end of the first transport path 6 (see FIG. 11). Further, a temporary stop position 61 of the first movable body 20 is positioned at a predetermined distance on the upstream side of the unloading position side stop position 59 (see FIG. 10).

As shown in FIG. 4, a separation stopper device 60 is provided at the downstream end position 10 of the first conveyance path 6. The separation stopper device 60 has an air cylinder device 62 fixed to the lower side surface of the I-shaped beam 34, and one end thereof connected to the piston portion of the air cylinder device 62. And a crank device 64 having a stopper portion 58 advancing and retracting on the carriage rail 32. The stopper portion 58 abuts on a front end portion of a front side bearing portion 100 (described later) of the carriage 4 positioned at the downstream end position 10 when advancing on the carriage rail 32.

The first delivery position 11 and the second delivery position 11 are arranged at a first delivery position 11 aligned with the downstream end position 10 of the first transport path 6 and a second delivery position 13 aligned with the upstream end position 12 of the second transport path 8. A second transport rail 66 is disposed to connect the loading position 13. The first carry-out position 11 and the second carry-in position 13 are parallel to each other, and the second transfer rail 66 has a direction perpendicular to the first transport path 6 and the second transport path 8 like the first transport rail 38. Extends to At the first delivery position 11 on the second transport rail 66, a transport carriage 40 is located which moves in a direction perpendicular to the transport direction. The configuration of the transfer carriage 40 is similar to that of the transfer carriage 40 in the first transfer rail 38. The second transfer rail 66 and the transfer carriage 40 constitute a second traverser 68 as a traverser.

At the lower inner edges of the pair of I-shaped beams 34 of the first transport path 6, mobile rails 70 parallel to the carriage rails 32 are laid (see FIG. 5), and the mobile rails 70 Rolling wheels 72 are placed (see FIGS. 4 and 5). The first movable body 20 has a rectangular parallelepiped carrying-in position moving unit 20a provided on the upstream end position side (right side in FIG. 2) and a rectangular parallelepiped carrying-out position provided on the downstream end position side (left side in FIG. 2). A side moving unit 20b and a connecting unit 20c for connecting the carry-in position side moving unit 20a and the carry-out position side moving unit 20b are provided. The rolling wheels 72 are rotatably supported at the front, rear, left, and right on the side portions of the carry-in position moving unit 20a and the carry-out position moving unit 20b (see FIGS. 4 and 5).

Further, as shown in FIGS. 2 and 5, a bracket 74 protruding downward is provided on the lower portion on the upstream side of the carry-in position side moving unit 20a, and one end of the first link member 76 is rotated on the bracket 74 It is connected freely. Further, a rectangular carrying-in engaging projection (carrying-in engaging means) 78 which protrudes upward is provided at the upper portion on the upstream end position side of the carrying-in position moving unit 20a. The loading-side engagement protrusion 78 is provided at a position shifted to one side (downward in FIG. 1, left in FIG. 5) from the center of the first movable body 20 in the direction orthogonal to the transport direction. Are configured to engage with the truck side front engaging projection 104 of FIG. At the upper part on the downstream end position side of the unloading position side moving part 20b, a rectangular unloading exit engaging protrusion (outgoing side engaging means) 80 projecting upward is provided. The delivery side engaging projection 80 is provided at a position shifted to the other (upper in FIG. 1, right in FIG. 6) from the center in the direction orthogonal to the transport direction, and the carriage side rear engagement described later provided on the carriage 4 It is configured to engage with the projection 106.

Similarly to the first conveyance path 6, the movement rails 70 are laid on the lower inner edges of the pair of I-shaped beams 34 of the second conveyance path 8, and the rolling wheels 72 of the second movement body 22 are placed on the movement rails 70. Is mounted freely. Similar to the first movable body 20, the second movable body 22 is a rectangular parallelepiped carrying-in position moving unit 22a provided on the upstream end position side (left side in FIG. 2) and the downstream end position side (right side in FIG. 2) And a connection portion 22c for connecting the carry-in position side moving portion 22a and the carry out position side moving portion 22b. The rolling wheels 72 are pivotally supported on the front, rear, left, and right, respectively, on the side portions of the carry-in position side moving unit 22 a and the carry out position side moving unit 22 b as in the first moving body 20. As shown in FIG. 2 and FIG. 5, a bracket 74 projecting downward is provided at the lower part on the downstream side of the unloading position side moving part 22b, and one end of the second link member 82 is rotatable relative to the bracket 74 Is linked to

In the second transport path 8 as well as the first transport path 6, a rectangular carry-in engagement projection (see FIG. 1) is formed at the upper portion on the upstream end position side (left side in FIG. A loading side engaging means 84) is provided. The loading-side engagement protrusion 84 is provided at a position shifted to one side (upward in FIG. 1, right side in FIG. 6) from the center of the second movable body 22 in the direction orthogonal to the transport direction. Are configured to engage with the truck side front engaging projection 104 of FIG. A rectangular discharge-side engaging protrusion (a discharge-side engaging unit) 86 projecting upward similarly to the first conveyance path 6 is provided at the upper portion on the downstream end position side of the discharge-position-side moving unit 22b. The carry-out side engagement projection 86 is provided at a position shifted to the other (downward in FIG. 1, left in FIG. 5) from the center in the direction orthogonal to the transport direction It is configured to engage with the projection 106.

The crank arms are provided as the first crank arm 24 and the second crank arm 26 in the first transport path 6 and the second transport path 8 respectively, corresponding to the middle positions in the longitudinal direction of the movable body rail 70. As shown in FIGS. 1 and 7, a motor 28 with an inverter control function is attached beside the middle position in the longitudinal direction of the second conveyance path 8. A fixed base 88 projecting outward is formed in the middle of the outer side of the column 36 in the second transport path 8 (see FIG. 7), and the motor 28 with an inverter control function is fixed to the fixed base 88. The drive shaft 90 of the motor 28 is disposed at right angles to the transport direction of the transport paths 6 and 8, and a pair of bearings 89 provided on the lower surface of the outer I-shaped beam 34 in the first transport path 6 and the second transport path 8. Is rotatably supported. As shown in FIG. 7, the first crank arm 24 and the second crank arm 26 are mounted on the drive shaft 90 such that relative rotation is not possible at their proximal ends. The crank arms 24 and 26 are substantially horizontal at the start point where the moving bodies 20 and 22 start to move forward, pass through the bottom dead center in the middle of rotation, and start at the end point where the moving bodies 20 and 22 finish advancing. Located approximately horizontally on the opposite side. Further, the other end of each link member 76, 82 is connected to the tip end of each crank arm 24, 26 so as to be relatively rotatable, and the rotational motion of each crank arm 24, 26 is in the linear direction of the moving body 20, 22 A slider crank mechanism 27 is configured as a motion conversion device that converts the motion into the motion of the second gear (see FIG. 2). Further, a drive device is configured by the motor 28 with an inverter control function and the drive shaft 90. The first crank arm 24 in the first conveyance path 6 and the second crank arm 26 in the second conveyance path 8 simultaneously rotate in the same direction. Therefore, the positioning of forward and backward movement of the movable bodies 20 and 22 with respect to the rotation direction of the crank arm is different between the first conveyance path 6 and the second conveyance path 8 in which the carriages 4 are conveyed in opposite directions. Specifically, in FIG. 2, when the first movable body 20 advances by the clockwise rotation of the first crank arm 24 in the first conveyance path 6, the clockwise direction of the second crank arm 26 in the second conveyance path 8. Rotation causes the second movable body 22 to retract, and when the first movable body 20 retracts in the first conveyance path 6 due to the counterclockwise rotation of the first crank arm 24, the second crank arm in the second conveyance path 8 The counterclockwise rotation of 26 causes the second moving body 22 to move forward.

The front and rear portions of the carriage 4 are described based on the transport direction, and therefore, in the first transport path 6, the portion denoted as the truck-side front engagement projection 104 is the second transport path 8. , And described as a truck side rear engagement protrusion 106.

In the rotation path of the first crank arm 24, the deceleration proximity switch 92 is at the position passing the bottom dead center, the temporary stop proximity switch 94 is at the predetermined position before the end point, and the end position is for the final end. A proximity switch 96 is provided on each of the forward and reverse paths where the first crank arm 24 swings. When the crank arm 24 reaches the position where these switches are arranged, predetermined rotation control is performed on the motor 28 with inverter control function. A drive control means is constituted by the motor 28 with inverter control function, the proximity switch 92 for deceleration, the proximity switch 94 for temporary stop, and the proximity switch 96 for the final end. These proximity switches are similarly provided for the second crank arm 26 as well.

As shown in FIG. 5, the carriages 4 arranged in each of the transport paths 6, 8 include a rectangular mounting table 98, a bearing portion 100 provided below the mounting table 98 to project in the front and rear, and left and right A rolling wheel 102 rotatably supported on the respective bearing portions 100 and rolling on the bogie rail 32 is provided. At the front of the mounting table 98 in the transport direction, there is provided a carriage-side front engagement projection 104 projecting downward. The carriage side front engagement projection 104 is located at one side from the center of the mounting table 98 of the carriage 4 in the direction orthogonal to the transport direction (in the first transport path 6, downward in FIG. 1, left in FIG. In 8, it is provided at a position shifted upward in FIG. 1 and to the right in FIG. 6 and engages with the loading side engaging projections 78 and 84 provided on the loading position side moving portions 20a and 22a of the moving body. Configured.

At the rear in the transport direction of the mounting table 98, there is provided a carriage-side rear engagement protrusion 106 projecting downward. The carriage side rear engagement projection 106 is located on the other side of the center of the mounting table 98 of the carriage 4 in the direction orthogonal to the transport direction (in the first transport path, upward in FIG. 1, right in FIG. 6, and in the second transport path 1 and provided at a position shifted to the left (not shown) in FIG. 5, and the delivery side engaging projections 80 and 86 provided on the delivery position side moving parts 20b and 22b of the moving bodies 20 and 22. Configured to engage with the

Next, the operation of the carriage conveyance device 2 configured as described above will be described below based on the drawings. First, as shown in FIG. 1, in the first conveyance path 6, the first movable body 20 is held in a retracted state at the first loading position 17, and then the first traverser 55 performs the first transfer from the second unloading position 15. The carriage 4 is transferred to the loading position 17.

Here, the delivery-side engaging protrusion 80 and the loading-side engaging protrusion 78 of the first movable body 20 are fixed to the first movable body 20, and the length between the two engaging protrusions 78 and 80 is also It is fixed in a fixed way. Then, before the carriage 4 is carried into the first loading position 17, the carriage side rear engaging projection 106 of the carriage 4 positioned at the downstream end position 10 and the delivery position side moving portion 20 b of the first moving body 20 From the carriage 4 located at the downstream end position 10 of the first conveyance path 6 engaged with the provided discharge-side engagement protrusion 106 and engaged with the discharge-side engagement protrusion 106, the upstream of the first conveyance passage 6 A plurality of carriages 4 are arranged in the first transport path 6 up to the carriage 4 located at the end position 16. Therefore, when the carriage 4 is carried in to the first loading position 17, if there is no gap between the carriage 4 carried in and the carriage 4 positioned at the upstream end position 16, they contact each other and carry in smoothly. It can not be done. In addition, if there is no gap in the transport direction between the carry-in side engaging projection 78 of the first movable body 20 and the truck side front engaging projection 104 of the truck 4 carried in, from the direction perpendicular to the transport direction When the carriage 4 is carried in, the corner of the carry-in engagement projection 78 and the corner of the carriage-side front engagement projection 104 of the carriage 4 brought in can not abut on and engage with each other. Furthermore, if there is no gap between the carriage 4 conveyed to the first unloading position 11 and the carriage 4 (at the downstream end position 10) adjacent thereto, the carriage 4 at the first unloading position 11 is moved by the second traverser 68 By disengaging the carriage side front engagement protrusion 106 and the discharge side engagement protrusion 80, the carriage 4 can not be transferred smoothly in the direction perpendicular to the transport direction. On the other hand, when a large gap is provided between the bogies 4, a plurality of the placed bogies 4 collide with each other during transportation to adversely affect the mold placed on the bogie 4 or the like.

Therefore, in the present embodiment, as shown in FIG. 3 described in the configuration, in order to smoothly carry the carriage 4 to the first loading position 17, the carriage 4 positioned at the first loading position 17 and the downstream side thereof The length between the carrying-out engagement projection 80 and the carrying-in engagement projection 78 is sandwiched so as to create a predetermined gap t with the adjacent bogie 4 (at the upstream end position 16) The lengths of the plurality of carts 4 are set in advance.

Then, when positioning at the first loading position 17, the loading is carried out in a state where a gap is provided between the carriage 4 carried to the first loading position 17 and the carriage 4 located at the upstream end position 16. Also, a clearance is provided between the truck side front engagement projection 104 and the loading engagement projection 78 of the first moving body 20 with some clearance. Then, the carriage-side front engagement projection 104 and the loading-side engagement projection 78 are engaged in the transport direction by the downstream movement of the first movable body 20. Further, as described above, the carriage side rear engagement projection 106 of the carriage 4 at the downstream end position 10 of the first conveyance path 6 is provided with the delivery side engagement provided on the delivery position side moving unit 20 b of the first moving body 20. The mating projection 80 is in contact with and engaged from the downstream side. By this, the carriage 4 at the downstream end position 10 where the delivery side engagement protrusion 80 engages and the carriage 4 at the delivery position 17 where the delivery side engagement protrusion 78 engages along the transport path It is assumed that the plurality of carts 4 arranged in a row are held.

Next, the motor 28 with inverter control function is driven to rotate the first crank arm 24 clockwise in FIG. 2 (the second crank arm 26 also rotates simultaneously). The rotational movement of the first crank arm 24 is transmitted to the loading position side moving unit 20 a of the first moving body 20 via the first link member 76, and the first moving body 20 is moved to extend parallel to the carriage rail 32. The body is advanced along the body rail 70 from the upstream direction to the downstream direction. The rotary motion of the first crank arm 24 is converted into linear motion in the transport direction by the slider crank mechanism 27 to advance the first movable body 20. Since the first crank arm 24 is in a substantially horizontal position at the start and end positions where it swings, the speed component in the transfer direction is small and the low speed transfer is performed, and the first crank arm 24 is dead center (top dead center or bottom dead) In the case of passing through the point), the speed component in the transport direction is large, and the transport is performed at high speed. By this, since rapid acceleration and deceleration do not occur in the carriage 4 engaged with the first moving body 20, it is possible to carry it quickly without breaking the mold placed on the carriage 4.

In the present embodiment, when the rotation of the first crank arm 24 passes the bottom dead center, the control of decelerating the rotation of the motor 28 is performed by the decelerating proximity switch 92, and the temporary stop proximity switch 94 is performed at a predetermined position before the end point. The first crank arm 24 is stopped. The clearance t provided between the carriage 4 at the first loading position 17 and the carriage 4 next to the carriage 4 is, first, a plurality of carriages 4 arranged by the acceleration accompanying the started movement of the first moving body 20 In order to be pressed by the carry-in engagement projection 78, it moves downstream, for example, a clearance t between the carry-out engagement projection 80 and the carriage-side rear engagement projection 106 of the carriage 4 at the downstream end position 10. Produces

Next, the first movable body 20 is stopped at the temporary stop position 61 by stopping the first crank arm 24 at a predetermined position near the end point by the temporary stop proximity switch 94. By this stop, as shown in FIG. 10, due to the inertia force to the downstream side at the time of deceleration, between the delivery side engagement projection 80 and the carriage side rear engagement projection 106 of the carriage 4 that was at the downstream end position 10 The generated gap t moves upstream of the plurality of carriages 4 arranged. In this case, as shown in FIG. 10, the rolling wheel 102 of the front part of the carriage 4 at the downstream end position 10 is the rotating member 52 of the biasing means 57 of the transfer carriage 40 positioned at the first unloading position 11 The rolling wheel 102 is biased from the upstream side to the downstream side (left direction in FIG. 10) by the coil spring 54 utilizing the circumferential curved surface of the rotating member 52 after stopping at the point where the crown of the head is crossed. .

Next, the first crank arm 24 is pivoted again, and the first movable body 20 is moved to the unloading position side stop position 59 at which the first movable body 20 corresponds to the first carry-out position 11 in the first conveyance path 6. By moving it, a clearance t is first generated between the unloading side engagement projection 80 and the carriage side rear engagement projection 106 of the carriage 4 (the carriage 4 carried out of the downstream end position 10) located at the downstream end position 10 Let Then, the rolling wheel 102 is urged forward by the coil spring 54 utilizing the circumferential curved surface of the rotating member 52 by the length of the gap, and the carriage 4 is moved to the first unloading position 11 where the carriage 4 is finally positioned. Thus, as shown in FIG. 8, FIG. 9 and FIG. 11, a clearance t is generated between the carriage 4 transported to the first unloading position 11 and the carriage 4 located on the upstream side thereof. In the present embodiment, the carriage 4 located next to the upstream side (the carriage 4 located newly at the downstream end position 10) is brought into contact with the bearing 100 of the carriage 4 by the stopper portion 58 of the separation stopper device 60 Since the movement to the side is restricted, the gap t is more reliably generated. Then, as shown in FIG. 11, the carriage 4 urged to the downstream side contacts the stopper 56 at the front end portion of the bearing portion 100 and is positioned at the first unloading position 11 on the transfer carriage 40 of the second traverser 68 Be done.

The positioned carriage 4 is carried from the first carry-out position 11 to the second carry-in position 13 of the second conveyance path 8 as shown in FIG. At that time, the second movable body 22 in the second conveyance path 8 is in a state of being retracted, and the loading side engagement protrusion 84 of the second movable body 22 is upstream on the carriage side front engagement protrusion 104 of the carriage 4 ( It engages from the left side in FIG. At the downstream end of the second conveyance path 8, the discharge side engagement protrusion engages with the carriage side rear engagement protrusion 106 of the carriage 4 at the downstream end position 14 from the downstream side. Then, the carriage 4 at the downstream end position 14 where the delivery side engagement protrusion 86 engages and the carriage 4 at the delivery position 13 where the delivery side engagement protrusion 84 engages are arranged along the transport path between them. In this state, the plurality of dolly 4 are held.

Next, the motor 28 is driven to rotate the second crank arm 22 counterclockwise as shown in FIG. As a result, the second movable body 22 is advanced, and the plurality of carriages 4 are moved along the second conveyance path 8 by a fixed amount in the right direction in FIG. 12. By this fixed amount of movement, as shown in FIG. 13, the carriage 4 located at the downstream end position 14 is transported to the second carry-out position 15. The details of the operation in the second transport path 8 are substantially the same as the operations in the first transport path 6, and thus the description thereof will be omitted.

According to the carriage conveyance device 2 configured as described above, when advancing the movable body 20 corresponding to the first conveyance path 6 from the upstream side to the downstream side by the drive device 28, the upstream end position side of the movable body 20 The delivery-side engaging protrusion 78 provided on the front side engages the carriage-side front engaging protrusion 104 of the carriage 4 at the first delivery position 17 and the delivery provided on the downstream end position side of the movable body 20 The side engagement projection 80 engages with the carriage side rear engagement projection 106 of the carriage 4 at the downstream end position 10 so as to restrict the free movement in the downstream direction. Therefore, the plurality of carriages 4 arranged in the first conveyance path 6 are positioned at the first loading position 17 engaged with the carry-in engagement projection 78 of the movable body 20 corresponding to the first conveyance path 6. And by the carriage 4 positioned at the downstream end position 10 engaged with the discharge side engagement projection 80, by advancing from the upstream side to the downstream side of the moving body 20 corresponding to the first conveyance path 6 A fixed amount of material is collectively transported downstream. In synchronism with the movement of the first movable body 20 corresponding to the first conveyance path 6, the second movable body 22 corresponding to the second conveyance path 8 is disengaged from the carriage 4 in the second conveyance path 8. In this state, the second conveyance path 8 is retracted from the downstream side to the upstream side. The carriage 4 transported from the downstream end position 10 of the first transport path 6 to the first unloading position 11 is transported by the second traverser 68 to the second loading position 13 parallel to the first unloading position 11. The carriage-side front engagement projection 104 of the carriage 4 carried into the second carry-in position 13 has a carry-in engagement projection 84 provided on the upstream end position side of the movable body 22 corresponding to the second conveyance path 8. The truck side rear portion of the carriage 4 in which the delivery side engagement projection 86 provided on the downstream end position side of the movable body 22 corresponding to the second transport path 8 is in the downstream end position 14 of the second transport path 8 It engages with the engagement protrusion 106 so as to restrict the free movement in the downstream direction. Then, when the moving body 22 corresponding to the second conveyance path 8 advances from the upstream side to the downstream side by the drive device 28, the plurality of carriages 4 arranged in the second conveyance path 8 correspond to the second conveyance path 8 Between the carriage 4 located at the second loading position engaged with the carry-in engagement projection 84 of the movable body 22 and the carriage 4 situated at the downstream end position 14 engaged with the carry-out engagement projection 86 In this state, the sheet is conveyed collectively from the upstream side to the downstream side of the second conveyance path 8 by a constant amount. In synchronization with the movement of the second movable body 22 in the second conveyance path 8, in the first conveyance path 6, the first movement path 20 corresponding to the first conveyance path 6 is disengaged from the carriage 4 in the first state. It recedes from the downstream side to the upstream side in the transport path 6.

As described above, when the carriage 4 is transported through the first transport path 6 and the second transport path 8, the carry-in engagement protrusions 78 and 84 of the corresponding moving bodies 20 and 22 and the carry-out engagement protrusions 80, The carriage 4 is transported while being held between the carriages 86 and 86. Therefore, the carriage 4 can be transported safely by preventing an impact due to a collision between the carriages. In addition, when the movable body 20 corresponding to the first conveyance path 6 in the first conveyance path 6 is advanced by the driving device 28 with the carriage 4 engaged from the upstream side to the downstream side, the second conveyance is simultaneously performed. The movable body 22 corresponding to the second transport path 8 in the path 8 is retracted from the downstream side to the upstream side in a state where the engagement with the carriage 4 is released. Then, when the movable body 22 corresponding to the second conveyance path 8 advances in the second conveyance path 8 with the plurality of carriages 4 engaged from the upstream side to the downstream side, the first conveyance path 6 is simultaneously moved. The movable body 20 corresponding to the first conveyance path 6 retreats from the downstream side to the upstream side in a state where the engagement with the carriage 4 is released. In this manner, the carriage 28 moves the carriage 4 in the first conveyance path 6 by the movement of the movement body 20 in a predetermined direction (for example, the direction in which the first conveyance path 6 advances). The carriage 4 can be transported in the second transport path 8 by the movement of the movable body 22 in the direction opposite to the predetermined direction (for example, the backward direction in the first transport path 6). Therefore, it is possible to efficiently transport the carriages 4 in the plurality of transport paths 6 and 8 with minimal operation without waste by the single drive unit 28 without providing the drive unit 28 for each transport path as in the related art. It is possible to save space and install equipment at a place where the drive device 28 is installed.

Further, the carry-in side engaging projection 78 provided on the carry-in position side moving unit 20a of the first movable body 20 is positioned at the first carry-in position 17 when the first movable body 20 advances from the upstream side to the downstream side. Engage with the truck side front engagement projection 104 of the truck 4 from the upstream side, and engage with the truck side front engagement projection 104 of the truck 4 when the first moving body 20 retracts from the downstream side to the upstream side Is released. On the other hand, the carry-out side engagement projection 80 provided on the carry-out position side moving unit 20b of the first movable body 20 is located at the downstream end position 10 when the first movable body 20 advances from the upstream side to the downstream side. Since it engages by being in contact with the carriage side rear engagement projection 106 of the carriage 4 from the downstream side, free movement of the plurality of carriages 6 arranged in the first conveyance path 6 to the downstream side is restricted. The unloading-side engagement protrusion 80 is provided at the first movable body 20 at a position shifted from the center of the carriage 4 in the direction orthogonal to the conveyance direction, and one on the carriage 4 in the direction orthogonal to the conveyance direction. Since it does not engage with the carriage-side front engagement projection 104 provided at a position shifted to the lower side, when the first movable body 20 is retracted from the downstream side to the upstream side, it is newly transported to the downstream end position 10 It is possible to move only the first mobile unit 20 upstream and engage with the rear of the newly transported carriage 4 without being caught in the front of the carriage 4. As described above, the carry-in engagement projection 78 is provided at a position deviated from the center of the carriage 4 in the direction orthogonal to the transport direction, and the carry-out engagement projection 80 is deviated from the center in the orthogonal direction. By providing, the loading side engagement protrusion 78 and the unloading side engagement protrusion 80 eliminate the need for a mechanism for performing the advancing and retracting operations for engagement and engagement release, and a carriage transfer device having an extremely simple engagement structure is provided. As it becomes possible to construct, it is possible to achieve a large facility cost reduction.

The carry-in engagement projection 78 is provided at a position shifted to one side from the center in the direction orthogonal to the transport direction, and the carry-out engagement projection 80 is provided at a position shifted from the center in the direction orthogonal to the transport direction. However, the present invention is not limited to this, and for example, the carry-in engagement protrusion and the carry-out engagement protrusion are provided at mutually offset positions in the direction orthogonal to the transport direction, and the carry-in engagement protrusion It does not engage with the joint projection, and the delivery-side engagement projection may not engage with the front carriage-side projection.

Further, the rotational movement of the crank arm 24 given by the inverter control motor 28 is converted into linear movement in the transport direction by the slider crank mechanism 27 to reciprocate the first moving body 20. By setting the crank arm 24 to a substantially horizontal position at the start point and end point of swinging, the speed component in the transfer direction becomes small and the low speed transfer is performed, and the crank arm 24 is dead center (top dead center or bottom dead center) In the case of passing through, the speed component in the transport direction becomes large, resulting in high speed transport. Therefore, at the time of acceleration / deceleration, a large acceleration force accompanying acceleration and a large inertia force accompanying deceleration are not generated. Therefore, the mold placed on the carriage 4 can be safely transported without breakage, and In the part passing through the dead point, the sheet can be conveyed at high speed, so efficient and rapid conveyance can be performed. In addition, although the inverter control motor 28 generally has a long acceleration / deceleration time and a variation in stop accuracy after deceleration compared to a servomotor, in a mechanism using the crank arm 24, the starting point where acceleration is performed as described above At the end point where deceleration is performed, the speed component in the transport direction with respect to the rotational speed is small. Therefore, the accuracy deviation of the rotation angle at the time of acceleration / deceleration has a small value that affects the positional deviation in the transport direction, and it is possible to drive the moving body with sufficient accuracy to withstand use. Further, even in the event of a failure of the motor unit, the inverter control motor can be easily obtained with a relatively short delivery time, and for example, the stop of the production line for replacing the motor unit can be ended in a short time.

Further, the distance between the carry-in side engagement protrusion 78 and the carry-out side engagement protrusion 80 in the first conveyance path 6 is the subject of the carriage 4 positioned at the first carry-in position 17 with which the carry-in side engagement protrusion 78 engages. Distance from the engaged position (carriage-side front engagement projection 104) to the engaged position (carriage-side rear engagement projection 106) of the carriage 4 located at the downstream end position 10 where the discharge side engagement projection 80 engages The gap is set to be longer than a predetermined length. Then, a gap t is provided between the carriage 4 carried out from the downstream end position 10 and the following carriage 4 by utilizing the gap of this predetermined length.

Therefore, while advancing the first moving body 20, using the control function of the motor 28 with an inverter control function, the unloading position at which the first moving body 20 is opposed to the first unloading position 11 of the first transport path 6 first It stops at the temporary stop position 61 before the side stop position 59 (refer FIG.10 and FIG.11). The carriage 4 unloaded from the downstream end position 10 is applied with an urging force that separates from the carriage 4 that follows it at the temporarily stopped position, and movement to the downstream side is restricted by the delivery side engagement projection 80 and stops It will be in a state of Next, by advancing the first movable body 20 toward the discharge position side stop position 59 again, the restriction on the downstream side by the discharge side engaging projection 80 with respect to the carriage 4 unloaded from the downstream end position 10 is solved. At the same time, the carriage 4 carried out of the downstream end position 10 moves following the delivery engagement projection 80 by the biasing means 57, so that a clearance t is created between the carriage 4 and the following carriage 4 In the state in which the gap t is generated, positioning is performed at the first carry-out position 11.

In this manner, the carriage 4 transported to the first unloading position 11 has a clearance t with respect to the adjacent carriages located on the upstream side (the subsequent carriages 4 that are newly positioned at the downstream end position 10) Since it is provided and positioned, it contacts the carriage 4 at the adjacent downstream end position 10 in unloading from the first unloading position performed by the second traverser 68 to the second loading position 13 of the second conveyance path 8 arranged in parallel. It can be transported smoothly without

As described above, the carriage conveyance device 2 in which the loading-side engagement protrusion 78 and the unloading-side engagement protrusion 80 of the first movable body 20 corresponding to the first conveyance path 6 are fixed to the first movable body 20 and provided. Even in this case, since the predetermined clearance t can be provided between the first loading position 17 or the carriage 4 at the positions 16 and 10 adjacent to the first unloading position 11 and the loading and unloading can be performed, smoothly and The carriage can be carried out quickly.

The carriage 4 is similarly transported in the second transport path 8 as well.

Next, a second embodiment in which the carriage conveying device according to the present invention is implemented in a carriage conveying device for conveying a flask and a mold in a casting line will be described below based on the drawings. As shown in FIG. 14, the carriage transport device 202 in the present embodiment has a first second transport path 204 and a second second transport path 206 as a second transport path, and the first second transport path The transport path 204 is provided with a first second moving body 205 that moves along the transport path 204, and a second second transport path 206 is configured to move along a transport path 206. A second mobile unit 207 is provided, and the first second mobile unit 205 and the second second mobile unit 207 and the first mobile unit 20 are the motor 28 with an inverter control function as in the first embodiment. On the basis of the rotation of a crank arm (not shown) driven by the motor, it reciprocates by a fixed amount along the provided conveyance paths 6, 204, 206.

In addition, the first second loading position 210 is positioned at the upstream end position 208 of the first second conveyance path 204, and the position aligned at the upstream end position 212 of the second second conveyance path 206. The second second loading position 214 is located at the position. The first unloading position 11, the first second loading position 210 and the second second loading position 214 are parallel, and the first second loading position 210 and the second second loading position 214 are second The carriage 4 is configured to be transported by the movable carriage 40 in the second traverser 216 from the first unloading position 11 aligned with the downstream end position 10 of the first transport path 6 at a position above the two traverser 216. Further, the first second unloading position 220 is positioned at the downstream end position 218 of the first second conveyance path 204, and the position aligned at the downstream end position 222 of the second second conveyance path 206. The second second delivery position 224 is located at the position. The first loading position 17, the first second unloading position 220, and the second second unloading position 224 are in parallel, and the first second unloading position 220 and the second second unloading position 224 are The carriage 4 transported to the first second delivery position 220 or the second second delivery position 224 by the moving carriage 40 in the first traverser 226 is a position on the first traverser 226 and is in the first transport path 6. It is configured to be transported to the first loading position 17 aligned with the upstream end position 12. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

In the carriage conveying device 202 of the present embodiment, the crank arms (not shown) respectively provided are simultaneously rotated by the rotation by the drive of the motor 28 with the inverter control function. Then, as described above, the first moving body 20, the first second moving body 205, and the second second moving body 207 simultaneously reciprocate by a fixed amount as the crank arm rotates. Then, the carriage 4 is engaged with any one of the moving bodies 20, 205, and 207 in the transport path in which the carriage 4 is carried into one of the loading positions 17, 210, 214, and the constant amount is transported from the upstream side to the downstream side Be done. The other operations are the same as those of the carriage conveying device of the first embodiment, and thus the description thereof is omitted.

Also in the carriage conveying device 202 provided with one first conveyance passage 6 and two second conveyance passages 204 and 206 as in the present embodiment, the carriage 4 is operated by the single drive device (motor with inverter control function) 28. Can be transported quickly and safely.

Next, a third embodiment in which the carriage conveying device according to the present invention is applied to a carriage conveying device for conveying a flask and a mold in a casting line will be described below based on the drawings. As shown in FIG. 15, the carriage conveyance device 302 in the present embodiment has a first first conveyance passage 304 and a second first conveyance passage 306 as a first conveyance passage, and has 1 as a second conveyance passage. The second transport path 308 and the second transport path 310 are provided. Also, as a traverser, a first first delivery position 312 aligned at the downstream end position 311 of the first first conveyance path 304 and a first first position aligned at the upstream end position 313 of the first second conveyance path 308 The second traversing position 316 connecting the second loading position 314 and the downstream end of the first second unloading position 318 or the second second feeding path 310 aligned with the downstream end position 317 of the first second feeding path 308 The second second delivery position 320 aligned at the position 319 and the first first loading position 322 aligned at the upstream end position 321 of the first first transfer path 304 or the upstream of the second first transfer path 306 A second traverser 324 connecting the second first loading position 325 aligned with the end position 323 and a second first unloading position 327 and 2 aligned with the downstream end position 326 of the second first unloading path 306 Second of th And a third traverser 330 that connects the second loading position 329 of the second aligning the upstream end position 328 of the sending passage 310. The first first transport path 304 is provided with a first first moving body 332 that reciprocates by a fixed amount along the transport path 304. The first second transport path 308 is provided with a first second movable body 333 which reciprocates by a fixed amount along the transport path 308. The second first transport path 306 is provided with a second first movable body 334 that reciprocates along the transport path 306 by a fixed amount. The second second transport path 310 is provided with a second second movable body 335 that reciprocates by a fixed amount along the transport path 310. Each conveyance path 304, 306, 308, 310 is provided with a crank arm (not shown) driven by the motor 28 with an inverter control function, and these crank arms are configured to simultaneously reciprocate each moving body by a fixed amount at the same time. ing. In addition, in the second traverser 324, the transfer carriages 40 are connected to each other so as not to be movable relative to each other by the connecting members 336, and simultaneously move on the transfer rails. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

Next, the operation of the carriage transfer device 302 configured as described above will be described below based on the drawings. First, as shown in FIG. 15, in the first first transport path 304 and the second first transport path 306, the first first loading position 322 and the second first loading position 325 respectively make the first The upstream end position sides of the first moving body 332 and the second first moving body 334 are held in the retracted state. Subsequently, the carriage 4 is transferred from the first second unloading position 318 to the second first loading position 325 by the second traverser 324, and at the same time, the first first loading position 322 from the second second unloading position 320. The truck 4 is transferred to the When positioned at the respective first loading positions 322 and 325, the truck side front engaging projections 104 of the respective bogies 4 are located on the downstream side of the loading side engaging projections 78 of the respective first movable bodies 332 and 334. The positioning is performed, and the carriage-side front engagement projection 104 and the loading-side engagement projection 78 are engaged in the transport direction by the downstream movement of the first movable bodies 332 and 334. The carriage-side rear engagement projection 106 of the carriage 4 at the downstream end position 311, 326 of each first conveyance path 304, 306 has the delivery-side engagement projection 80 of each first movable body 332, 334 from the downstream side. Engaged in contact. The carriage 4 is located between the carriage 4 by the carriage 4 at the downstream end position 10 where the delivery side engagement protrusion 80 engages and the carriage 4 at the delivery position 17 where the delivery side engagement protrusion 78 engages. A plurality of carriages 4 arranged along the paths 304 and 306 are held in a state of being held.

Next, the motor 28 with the inverter control function is driven to rotate the crank arms (not shown) in a predetermined direction, and the first movable bodies 332 and 334 are advanced by a fixed amount, and the second movable bodies 333 and 335 are moved. Retract a certain amount. As a result, as shown in FIG. 16, the carriage 4 located at the downstream end position 311 of the first first conveyance path 304 and the carriage 4 located at the downstream end position 326 of the second first conveyance path 306 The sheet is conveyed to the respective unloading positions 312 and 327 and placed on the transfer carriage 40. The details of the conveyance are the same as those of the carriage conveyance device 2 of the first embodiment, so the description will be omitted.

Next, as shown in FIG. 17, by the second traverser 316, the bogie 4 that was at the first first unloading position 312 is transferred to the first second loading position 314, and the first second conveyance is performed. It is aligned at the upstream end position 313 of the passage 308. Also, the third traverser 330 transfers the carriage 4 that has been at the second first delivery position 327 to the second second delivery position 329 and places it at the upstream end position 328 of the second second transport path 310. Be aligned. At this time, the carriage-side front engagement protrusions 104 of the respective carriages 4 aligned with each other are engaged with the loading-side engagement protrusions 84 of the retracted second movable bodies 333 and 335. On the downstream side of each of the second transport paths 308 and 310, the truck side rear engagement projection 106 of each truck 4 placed at the downstream end position 317 and 319 corresponds to the discharge side engagement projection on the second movable body 333 and 335 86 are engaged respectively. In the second traverser 324, the connected empty transfer carriage 40 is transferred to the second unloading position 318, 320 in the first and second second transport paths 308, 310.

Next, the motor 28 with the inverter control function is driven to rotate the crank arms (not shown) in a predetermined direction, and the second movable bodies 333 and 335 are advanced by a fixed amount, and the first movable bodies 332 and 334. Set back a fixed amount. As a result, as shown in FIG. 18, the carriage 4 located at the downstream end position 317 in the first second conveyance path 308 and the carriage 4 located at the downstream end position 319 in the second second conveyance path 310 The sheet is conveyed to the respective second delivery positions 318 and 336 and placed on the transfer carriage 40. The details of the conveyance are the same as those of the carriage conveyance device 2 of the first embodiment, so the description will be omitted.

As in the present embodiment, it is provided with two first transport paths 304 and 306 and two second transport paths 308 and 310, and for example, it is necessary to take a long transport path as a cooling area after pouring. Also in the device 302, the carriage 4 can be transported quickly and safely by the single drive device (motor with inverter control function) 28.

Next, a fourth embodiment in which the carriage conveying device according to the present invention is embodied in a carriage conveying device for conveying a flask and a mold in a casting line will be described below based on the drawings. In the carriage conveying device 402 in the present embodiment, as shown in FIGS. 19 and 20, the carriage 404 has a carriage-side front engagement projection 406 projecting downward at the front end edge and extending in a direction perpendicular to the conveyance direction. A truck side rear engagement projection 408 is provided which protrudes downward at the rear end edge and extends in a direction perpendicular to the transport direction. The upstream end position side of the first movable body 20 and the second movable body 22 in the first conveyance path 6 and the second conveyance path 8 (in FIG. 19, the right end for the first movable body 20 and the left end for the second movable body 22 At the end), a bell crank device 412 is provided as a loading side engaging means. The bell crank device 412 is pivotally supported at the upstream end of the first movable body 20 by a rotation shaft in a direction perpendicular to the transport direction, and is bent upward at the tip of one arm projecting backward (upstream) An engagement collar is formed. The tips of the other downwardly projecting arms are rotatably linked to the piston portion of the air cylinder device 410 relative to each other. The bell crank device 412 is retracted downward to an engagement position where the engagement collar portion is advanced upward and engaged with the truck side front engagement projection 406 by advancing and retracting the piston portion of the air cylinder device 410. Move back and forth between the retracted position out of the engaged position. In addition, on the downstream end position side of the first movable body 20 and the second movable body 22 (in FIG. 19, the left end for the first movable body 20 and the right end for the second movable body 22) A bell crank device 414 is provided. The bell crank device 414 is pivotally supported at the downstream end of the first movable body 20 by a rotating shaft in a direction perpendicular to the transport direction, and is bent upward at the tip of one arm projecting forward (downstream) An engagement collar is formed. The tips of the other downwardly projecting arms are rotatably linked to the piston portion of the air cylinder device 410 relative to each other. The bell crank device 414 is engaged with the engagement position in which the engagement collar portion is advanced upward and engaged with the truck side rear engagement projection 408 by advancing and retracting the piston portion of the air cylinder device 410. Move back and forth between the retracted position out of the joint position. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

Next, the operation of the carriage conveyance device 402 configured as described above will be described below based on the drawings. In the carriage conveyance device 402 of the present embodiment, by operating the air cylinder device 410 on the upstream end position side of the first moving body 20 in the first conveyance passage 6, the engagement collar portion of the loading-side bell crank device 412 is upward. Advance to the engagement position of As a result, the loading-side bell crank device 412 of the first movable body 20 is engaged with the truck-side front engagement projection 406 of the truck 404 carried into the first loading position 17. At the same time as these operations, the air cylinder device 410 on the downstream end position side of the first moving body 20 is operated to advance the engagement collar portion of the discharge side bell crank device 414 to the upper engagement position. As a result, the delivery-side bell-crank apparatus 414 of the first movable body 20 is engaged with the carriage-side rear engagement projection 408 of the carriage 404 at the downstream end position 10 of the first conveyance path 6. On the other hand, in the second transport path 8, the engagement collar portion is positioned at the retracted position for both the loading-side bell-crank apparatus 412 and the unloading-side bell-crank apparatus 414 of the second movable body 22.

Next, the motor 28 with the inverter control function is driven to rotate the crank arm (not shown) in a predetermined direction to advance the first moving body 20 by a predetermined amount and to retract the second moving body 22 by a predetermined amount. As a result, the carriages 404 arranged in the first transport path 6 are moved to the downstream side by a fixed amount, and the carriage 4 at the downstream end position 10 is transported to the first carry-out position 11 and placed on the transfer carriage 40 Place on When the second movable body 22 retracts, only the second movable body 22 does not engage with the carriage 404, with neither the loading side bell crank device 412 nor the unloading side bell crank device 414 of the second movable body 22 engaging with the carriage 404. Move upstream.

When the carriage 404 transported to the second loading position 13 by the second traverser 68 is transported to the upstream end position 12 in the second transport path 8, the engagement of the loading-side bell crank device 412 of the second moving body 22 By aligning the joining part with the truck side front engaging projection 406 and engaging the engaging hook part of the unloading side bell crank device 414 with the truck side rear engaging projection 408, the second transportation path 8 is arranged. The second mobile unit 22 collectively holds the plurality of carts 404 as described above. Then, by advancing the second moving body 22 by a fixed amount, the arranged group of carriages 404 can be safely transported without colliding with each other. At the same time, the first mobile unit 20 is retracted. When the first movable body 20 retracts, only the first movable body 20 does not engage with the carriage 404, with neither the loading side bell crank device 412 nor the unloading side bell crank device 414 of the first movable body 20 being engaged. Move upstream. The other operations are the same as those of the carriage conveyance device 2 of the first embodiment, and thus the description thereof is omitted.

As in the present embodiment, the air cylinder device 410 does not use the carry-in engagement means and the carry-out engagement means as the carry-in engagement protrusion and the carry-out engagement protrusion fixed to the movable body. It may be a bell crank device 412 which is advanced and retracted to be engaged and disengaged with the carriage 404.

Next, a fifth embodiment in which the carriage conveying device according to the present invention is applied to a carriage conveying device for conveying a flask and a mold in a casting line will be described below based on the drawings. In the carriage conveying device 502 in the present embodiment, a carriage side front engagement protrusion 506 and a carriage side rear engagement protrusion 508 protruding laterally are provided on the front and rear side surfaces of the carriage 504. Further, the movable body 510 is integrally provided between the first conveyance path 6 and the second conveyance path 8, and the second loading path 17 side of the first conveyance path 6 of the movable body 510 and the second conveyance path 8 On the side of the unloading position 15 side (right end in FIG. 21), the first loading side bell crank device 512 corresponding to the first transport path 6 side and the second unloading side bell crank corresponding to the second transport path 8 side A device 514 is provided.

The first loading side bell crank device 512 is provided on the upper surface of the upstream end of the first conveyance passage 6 of the movable body 510 in a direction perpendicular to the conveyance direction to the bearing portion protruding toward the first conveyance passage 6 side. An engaging flange portion bent upward is formed at the tip of one of the arms that are supported by the rotation shaft and project forward (downstream). The tips of the other downwardly projecting arms are rotatably linked to the piston portion of the air cylinder device 510 relative to one another. The bell crank device 512 is engaged with the carriage-side front engagement protrusion 506 in the first conveyance path 6 by the engagement collar portion advancing upward by advancing and retracting the piston portion of the air cylinder device 520. And retreats downward and advances and retracts between the retracted position out of the engagement position. The second unloading side bell crank 514 rotates in a direction perpendicular to the conveyance direction to a bearing portion provided on the upper surface of the downstream end of the moving body 510 on the second conveyance path 8 so as to face the second conveyance path 8 side. It is supported by a shaft. The structure is substantially the same as that of the bell crank device 512, and its engagement flange engages with the carriage side rear engagement projection 508 of the carriage 504 which is advanced upward and located at the downstream end position 14 in the second conveyance path 8. Do.

The side of the first delivery path 11 of the first conveyance path 6 of the movable body 510 and the side of the second delivery position 13 (left end in FIG. 21) of the second delivery path 8 correspond to the first conveyance path side. A first unloading bell crank device 516 and a second loading bell crank device 518 corresponding to the second transport path side are provided. The structure of these bell crank devices 516 and 518 is substantially the same as that of the first loading side bell crank device 512, and the engagement flange portion of the first unloading side bell crank device 516 is at the downstream end position in the first conveyance path 6. 10 is engaged with the carriage side rear engagement protrusion 508 of the carriage 504 located at 10. The engagement collar portion of the second loading side bell crank device 518 engages with the truck side front engaging projection 506 of the truck 504 located at the second loading position 13 in the second conveyance path 8. The first loading side bell crank device 508 and the second loading side bell crank device 518 of the carriage 502 constitute loading side engagement means, and the first unloading side bell crank device 512 and the second unloading side bell crank device 514 Configure the side engagement means. The other configuration is the same as that of the first embodiment, so the same reference numerals are given and the description is omitted.

Next, the operation of the carriage conveyance device 502 configured as described above will be described below based on the drawings. In the carriage conveying device 502 of the present embodiment, the carriage 504 arranged in the first conveyance passage 6 and the carriage 504 arranged in the second conveyance passage 8 are conveyed by reciprocating one moving body 510 by a fixed amount. Do. In the first conveyance path 6, the air cylinder device 520 on the upstream end position side of the moving body 510 is operated to advance the first loading side bell crank device 512 to the engagement position. As a result, the first loading bell crank device 512 is engaged with the truck-side front engagement projection 506 of the truck 504 carried into the first loading position 17. Concurrently with these operations, the air cylinder device 520 on the downstream end position side of the moving body 510 is operated to advance the first unloading bell crank device 516 to the engagement position. As a result, the first discharge side bell crank device 516 is engaged with the carriage side rear engagement projection 508 of the carriage 504 at the downstream end position 10 of the first conveyance path 6. On the other hand, both the second loading side bell crank device 518 and the second unloading side bell crank device 514 corresponding to the second transport path 8 are positioned at the retracted position.

Next, the motor 28 with an inverter control function is driven to move the crank arm (not shown) in the conveying direction (left side in FIG. 21) by a fixed amount. In this case, the moving body 510 is advanced in the first conveyance path 6 and is retracted in the second conveyance path 8. As a result, the carriages 504 arranged in the first transport path 6 are moved downstream by a fixed amount, and the carriage 504 at the downstream end position 10 is transported to the first carry-out position 11 and placed on the transfer carriage 40. Place on In the second transport path 8, when the movable body 510 moves backward, only the movable body 510 moves upstream without engaging with the carriage 504 and moving the carriage 504. The other operations are the same as in the first embodiment, and thus the description thereof is omitted.

As in the present embodiment, a single movable body driven by a single drive device may be engaged with a carriage arranged in a plurality of conveyance paths corresponding to the movable body and conveyed. There is no need for a movable body corresponding to the transport path to be provided for each transport path. As a result, the number of moving bodies corresponding to the transport path can be reduced, so that the facility cost can be reduced.

Further, the loading side engaging means and the unloading side engaging means provided on the moving body are a loading side engaging protrusion and a discharging side engaging protrusion fixed to the moving body by shifting the engaging position with respect to the carriage, or air The invention is not limited to a bell crank device operated by a cylinder, and for example, known techniques such as a mechanism in which an engagement claw slides and protrudes by a cam mechanism in a direction perpendicular to the transport direction can be used.

Thus, the specific configuration described in the above-described embodiment is merely an example of the present invention, and the present invention is not limited to such a specific configuration, and the gist of the present invention will be described. Various aspects can be taken without departing from the scope of the invention.

The trolley | bogie conveyance apparatus which concerns on this invention is utilized in the trolley | bogie conveyance line provided with the trolley | bogie conveyance path of multiple rows | lines which are conveyed in the opposite direction mutually.

DESCRIPTION OF SYMBOLS 2 ... bogie conveyance apparatus, 4 ... bogie, 6 ... 1st conveyance path, 8 ... 2nd conveyance path, 10 ... downstream end position, 11 ... delivery position (1st delivery position), 12 ... upstream end position, 13 ... delivery Position (second loading position), 14 ... downstream end position, 15 ... unloading position (second unloading position), 16 ... upstream end position, 17 ... loading position (first loading position), 18 ... traverser, 20 ... moving body (First moving body) 20a: loading position side moving portion 20b: unloading position side moving portion 22: moving body (second moving body) 24: crank arm and drive device (first crank arm) 26, 26 Crank arm · Drive (2nd crank arm), 27 ... Motion converter (slider crank mechanism), 28 ... Drive · Inverter control motor · Drive control means (Motor with inverter control function), 55 ... Traverser (1st Traverser ), 57 ... Ejecting means, 59 ... Delivery position side stop position, 61 ... Temporary stop position, 68 ... Traverser (second traverser), 78 ... Loading side engagement means (loading side engagement projection), 80 ... Delivery side engagement means Side engaging projection), 84: Carrying-in engagement means (carrying-in engaging projection) 86: Carrying-out engaging means (carrying-out engaging projection) 104: Truck side front engaging projection, 106: Truck side Rear engaging projection, 202: truck carriage, 204: second transport path (first second transport path) 205: moving body (first second moving body) 206: second transport path (second Second transport path), 207 ... moving body (second second moving body) 208 ... upstream end position 210 ... loading position (first second loading position) 212 ... upstream end position 214 ... loading Position (second second loading position) 216 Traversa (second Traversa) 218 downstream end position 220: Delivery position (first second delivery position) 222: Downstream end position 224: Delivery position (second second delivery position) 226: Traverser (first traverser) 302: Bogie transport device 304: first conveyance path (first first conveyance path) 306: first conveyance path (second first conveyance path) 308: second conveyance path (first second conveyance path) 310 ... 2nd conveyance way (2nd 2nd conveyance way), 402 ... carriage conveyance device, 404 ... carriage, 406 ... carriage side front engagement projection, 408 ... carriage side rear engagement projection, 502 ... carriage conveyance device, 504 ... truck, 506 ... truck side front engaging projection, 508 ... truck side rear engaging projection, 510 ... moving body.

Claims (4)

1. A first transport path in which a plurality of bogies for placing a flask or a mold are continuously disposed between an upstream end position and a downstream end position and transported in a predetermined direction;
   A plurality of bogies provided parallel to the first transport path for placing a frame or a mold are continuously disposed between the upstream end position and the downstream end position and transported in the direction opposite to the predetermined direction. 2 transport paths,
   Between a first unloading position aligned with the downstream end position of the first transport path, and a second loading position aligned with the first unloading position and aligned with the upstream end position of the second transport path, and the second The carriage is reciprocated between a second unloading position aligned with the downstream end position of the transport path and a first loading position aligned with the second unload position and aligned with the upstream end position of the first transport path. A carriage transfer device comprising: a traverser for transporting each of the carry-out positions from the carry-out position to the load-in position;
   A movable body provided corresponding to the first transport path and the second transport path and reciprocating along a fixed distance along each transport path;
   The movable body is provided on the upstream end position side of the first transport path and the second transport path of the movable body, and the movable body is downstream from the upstream side of one of the first transport path and the second transport path. When moving forward, it engages with the carriage located at the loading position of the one conveyance path, and when the movable body retracts from the downstream side to the upstream side of the one conveyance path, engagement with the carriage Loading side engagement means for releasing
   The movable body is provided on the downstream end position side of the first transport path and the second transport path of the movable body, and the movable body is downstream from the upstream side of the one transport path of the first transport path and the second transport path. A delivery side engaging means that engages with the carriage at the downstream end position of the one conveyance path when advancing to the side, and restricts the free movement of the plurality of carriages in the downstream direction;
   And a driving device for reciprocating the moving body by a fixed amount.
2. The carriage according to claim 1, wherein the carriage has a carriage-side front engagement projection provided at a front portion in the conveyance direction of the carriage, and the carriage-side front engagement projection at a rear portion in the conveyance direction of the carriage. And a carriage-side rear engagement projection provided at a position shifted to one side in a direction orthogonal to the transport direction,
   The movable body is disposed between a carry-in position side moving unit that moves oppositely between the carry-in position and the upstream end position of each of the transport paths, and between the carry-out position and downstream end position of each of the transport paths. And an unloading position side moving unit for moving
   The carry-in engagement means engages with the carriage-side front engagement projection of the carriage provided at the carry-in position-side moving unit of the movable body and positioned at the carry-in position from the upstream side. Has a side engaging projection,
   The delivery side engagement means is provided at a position shifted to one side in a direction orthogonal to the transport direction with respect to the delivery side engagement projection in the delivery position side moving unit of the movable body, and is positioned at the downstream end position And a delivery side engaging projection engaged by coming into contact with the carriage side rear engaging projection of the carriage from the downstream side.
3. In Claim 1 or 2, the said drive device is a crank arm,
   An inverter control motor for providing rotational motion to the crank arm;
   A motion converter for converting the rotational motion of the crank arm into a linear motion in the transport direction;
   A carriage transfer apparatus comprising:
4. The carriage according to any one of claims 1 to 3, wherein a distance between the carry-in engagement means and the carry-out engagement means is at a carry-in position at which the carry-in engagement means is engaged. The distance between the engaged position of the carriage and the engaged position of the carriage located at the downstream end position where the discharge side engagement means engages is set to be longer by a gap of a predetermined length.
   The drive device carries out the transport path while advancing the transport body from the upstream side to the downstream side of the corresponding transport path together with the cart located at the downstream end position and the cart following the truck. The following carriage is stopped at the downstream end position by stopping at the temporary stop position before the discharge position side stop position of the movable body corresponding to the position, and then the movable body is moved to the discharge position side stop position Drive control means,
   In the unloading position, biasing means separates the carriage carried out from the downstream end position by the moving body from the subsequent carriage positioned at the downstream end position when the moving body moves to the temporary stop position. A dolly carrying device characterized in that it is provided.

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