JP2008143517A - Truck carrying facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide truck carrying facilities in which a truck carried along a guide path by an automatic carrier is smoothly carried onto a truck group in a working line different in carrying speed and carrying power. <P>SOLUTION: A working floor 20 includes a first working part 10 in which a plurality of trucks is lined and which has a line driving means 25 for moving all trucks forward, a second working part 13, and the looped guide path 16. The automatic carriers a-c can be locked to the trucks A-G, and self-propelled along the guide path 19 for moving the truck F in the first working part 10 through the second working part 13 to the rear side of the first working part 10. Each of the trucks A-G has one end face at one end and the other end face at the other end for abutting on one end face. The automatic carrier c has a control panel for giving a command to the automatic carrier c to push all trucks by a one-truck distance after carrying the carried truck G onto the rear side of the plurality of trucks arranged in the first working part 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automatic transfer machine capable of self-propelling a plurality of carts in a factory or the like, and a cart transportation facility for transporting the carts by driving means arranged on a floor surface.

  In recent years, parts are often transported and assembled in a factory on a plurality of work carts instead of a conventional belt conveyor. The work cart has a work table on which work is performed and a step on which an operator rides. It is desirable that the plurality of work carts have a high conveyance speed before being conveyed to the work line, and it is desirable that the conveyance force be large in the work line. Taking this into consideration, before the work lines reach the work line, they are transported by the transport force of a plurality of automatic transport machines that can run along the taxiway, and the work line is driven by a drive motor fixed to the floor. May be transported by force.

  The applicant of the present application has first applied for a carriage transport device (see Patent Document 1). The work cart transport device includes a drive unit disposed at a predetermined point of a guide path disposed along a predetermined path of the floor, and a plurality of disposed in contact with each other downstream from the predetermined point of the guide path. A group of work carts composed of work carts, an automatic transporter that can be self-propelled along a guideway and provided with a locking member, and a locking member of the automatic transporter can be locked and is in contact with the most upstream work cart. Transported work carts.

In this work cart transport device, a plurality of work carts on the work line are given a pressing force by a driving means arranged at the entrance of the work line. The work carriage is transported along the guide path by an automatic transport machine until just before the entrance of the work line. As a result, the transported work cart can be transported at a high transport speed up to the front of the work line entrance, and can be transported with a large transport force after the work line entrance.
JP 2004-269143 A

  By the way, the plurality of work carts are conveyed at predetermined intervals by a plurality of automatic conveyance machines, intermittently reach before the entrance of the work line, and are intermittently carried into the entrance of the work line from the front. Therefore, in order to continuously transport the work cart on the work line, it is desirable to quickly draw the work cart that has reached before the entrance of the work line into the entrance of the work line.

  Considering this, the drive means in the work cart transport device includes an upstream retracting sub-motor in addition to the downstream transport main drive motor. The rotation speed of the sub drive motor is faster than the rotation speed of the main drive motor. First, pull the work carriage in front of the entrance of the work line with the sub drive motor close to the transfer speed of the automatic transfer machine, and then tact. The work carriage is handed over to the main drive motor according to the speed.

  The automatic transporter that transports the carriage is separated from the downstream carriage at the work line entrance, and passes through the space below the carriage group at a higher speed than the carriage group while the worker is working on the carriage. At the exit of the work line, the truck is locked to the upstream truck, and the truck is carried out. Thereby, the length of the work line determined by the number of carriages can be easily changed by adding or removing the carriage on the downstream side of the work line.

  However, since the drive means includes a sub drive motor in addition to the main drive motor, the structure is complicated and the equipment cost is high. In this case, even if the length of the work line can be easily changed, it is difficult to say that the entire carriage transportation facility is sufficiently simplified.

  The present invention has been made in view of the above circumstances, and is a drive for carrying a carriage conveyed by an automatic conveyance machine along a guide path into a carriage group on a work line having a conveyance speed and a conveyance force different from those of the carriage. The purpose is to provide a transport system for a cart that can simplify the source.

  The carriage transportation facility of the present invention includes (a) a plurality of carriages, (b) a first working section in which a plurality of carriages are arranged in a row, at least one second working section, and a first work A work floor including the second working part from the front end of the part, the rear end of the first working part, the front end of the first working part from the rear end of the first working part, and a guide path arranged in a loop; An automatic transporter that can be locked to a carriage and that is self-propelled along a taxiway, and that moves the carriage on the front side of the first working part to the rear side of the first working part along the taxiway through the second working part. And including.

  In this carriage transportation facility, each of the plurality of carriages has one end face at one end and the other end face in contact with the other end face at the other end, and the automatic transporter uses the carriage being transported as the first working unit. A control panel is provided for instructing that all the carts are pushed by the distance of one cart after being carried into the rear side of the plurality of carts arranged in a row. Further, the control panel instructs to reduce the speed of the automatic transfer machine until the carts conveyed by the automatic transfer machine come into contact with a plurality of carts arranged in a row in the first working unit. It is preferable to do so.

  According to the cart transportation facility of the present invention, the work efficiency is increased by proceeding with different processes simultaneously in the first working part and the second working part. In addition, by increasing the self-running speed of the automatic transfer machine on the guide path, the time required for moving the automatic transfer machine between the first working unit and the second working unit can be shortened.

  Since one end surface and the other end surface are in contact with each other on the rear side of the first working unit, the plurality of carriages of the first working unit are in contact with each other, and the automatic transfer machine that has reached the rear side of the first working unit By pushing, the whole of a plurality of carts can be driven. Here, since the automatic transfer machine pushes the plurality of carts in contact with each other, a dedicated pulling means for pulling the cart to the rear side of the first working unit and a means for pulling and driving the cart group are not required and are fixed to the floor. You can abolish the driving means.

  Furthermore, by reducing the self-propelling speed of the automatic transfer machine until the rearmost dolly comes into contact with the front dolly, it is possible to suppress the impact when the dolly comes into contact with each other and to lock the automatic transfer machine The carriage can be easily detached from the locked portion.

   The carriage transportation facility according to the present invention includes a plurality of carriages, a work floor, and an automatic conveyor. However, the column driving means provided in the conventional example is not provided. The carriage transportation facility according to the present invention is particularly effective when the number of the plurality of carriages in the first working unit is relatively small and the line driving force required in the first working unit is smaller than the conveying force of the automatic carrier. It is.

  Each of the plurality of carriages has one end surface and the other end surface in contact with the one end surface. One end surface and the other end surface of adjacent carts are in contact with each other to form a cart group. It is desirable that the plurality of carriages have the same configuration, but the detailed configuration may be different as long as the basic configuration is the same. In addition to the one end face and the other end face, each carriage is preferably provided with a platform on which at least a component is placed, a platform on which an operator rides, and a locked portion that can be locked by a locking member of the automatic transfer machine. .

  The work floor includes a first working part, a second working part, and a guiding part. Among these, the plurality of carriages are arranged in a row in the first working unit. The first working unit performs a predetermined first work, for example, assembling parts mounted on a carriage. Since the plurality of carriages are in contact with one end face and the other end face at the rear side (entrance) of the first working section, the plurality of carriages in the first work place are in contact with each other.

  At least one second working unit may be provided, and may be one or two or more. The second working section performs a predetermined second work, that is, a work corresponding to a pre-process or a post-process of the first work in the first working section. For example, as a pre-process, work such as picking of parts on the carriage is performed. The carriage of the second working unit may be connected or abutted and driven by a friction motor or the like, or may be conveyed and separated by an automatic conveyance machine.

  The guide unit is arranged in a loop from the front end of the first working unit to the second working unit and further to the rear end of the first working unit, from the rear end of the first working unit to the front end of the first working unit. That is, a portion extending from the front end of the first working portion to the rear end of the second working portion, a portion extending from the rear end of the second working portion to the front end of the second working portion, and the front end of the second working portion from the front end of the first working portion. A portion extending to the rear end and a portion extending from the rear end of the first working portion to the front end of the first working portion are included. The loop-shaped guide path is made of a magnetic traveling tape or the like, and the automatic transporter is self-propelled thereon.

  The automatic transfer machine can be locked to the carriage and has a locking member that is locked to the carriage. The automatic transporter travels along the taxiway and transports the most advanced carriages of the plurality of carriages in the first working section to the second working section, and further, the last of the plurality of carriages in the first working section. Carry to the end. Further, the carriage group forming all the rows including the carriage that has been conveyed is pushed forward by one carriage. Thereafter, the automatic transport vehicle unlocks the transported carriage, self-propells and engages with the most advanced carriage in the carriage group forming the first working unit row, and the second locked carriage is used as the second carriage. Take it out to the working section.

  The automatic transfer machine can reduce the self-running speed until the carriage that has been conveyed comes into contact with the carriage at the rearmost end of the carriage group that forms the first working unit row. Deceleration may be one stage or two stages. When decelerating in two stages, first, the automatic transporter decelerates slightly when it reaches a predetermined distance from the rear side of the first working unit, and at the same time or immediately before the rearmost carriage comes into contact with the front carriage. Slow down. As a result, the self-running speed of the automatic transfer machine is set to the line tact speed.

  One automatic transport machine stands by in front of the first working unit, and the subsequent cart transported by the automatic transport machine becomes the last cart of a plurality of carts in line with the first working unit. Further, all the carriages forming a row together with the carriages that have been conveyed are pushed forward by one carriage, and the most advanced carriage is sent to the automatic conveyance machine waiting on the front side of the first working unit. This front-side automatic transfer machine is locked with a state-of-the-art carriage, and is transferred from the first working unit to the second working unit. And the trolley | bogie which pushed the trolley | bogie of all the hands which forms a row | line | column for one trolley cancels | releases latching with the trolley | bogie which has conveyed, advances ahead, reaches the front side of a 1st operation part, and waits.

  Detection means for detecting contact between the one end face and the other end face can be provided. The detection means includes a displacement member disposed on the carriage and a detection member disposed on the automatic transfer machine. When a cart comes into contact with the front cart, the displacement member of the cart is displaced by the front cart, and this displacement is detected by the detection member of the automatic transfer machine. When the contact is detected, for example, the self-running speed of the automatic transfer machine can be reduced to one or two steps, or the transfer force can be increased.

  Further, when the cart is pushed out and reaches a predetermined position with respect to the automatic transfer machine waiting on the front side of the first working unit on the guide path, the standby automatic transfer machine starts and the standby automatic transfer machine guides. When the address mark on the road is reached, the locking member is locked to the locked portion of the carriage, and the carriage can be carried out from the front side.

Reference example

  A cart transport facility having the same technical contents as the cart transport facility of the present invention will be described first as a reference example.

(Constitution)
1 includes a plurality of carriages A to G, a plurality of carriages X to Z, a work floor 20, automatic conveyance machines a to c, and automatic conveyance machines x to z. The work floor (floor) 20 includes a first work part 10 having a friction motor 25, a second work part 13, and a guide path 16. The first working unit 10 is a parts assembly line, and a plurality of carriages A to E are connected and arranged to form a carriage group. The second working unit 13 is a component picking line, and a plurality of carriages X, Y, and Z are arranged apart from each other and are conveyed by automatic conveyance machines x, y, and z, respectively.

  The guide path 16 includes four guide path portions 17, 18, 19, and 21, that is, a guide path portion 17 that extends from the front end of the first working unit 10 to the rear end of the second working unit 13, and the rear end of the second working unit 13. A guide path portion 18 extending to the front end of the second working portion 13, a guide path portion 19 extending from the front end of the second working portion 13 to the rear end of the first working portion 10, and a rear end of the first working portion 10 extending to the front end. A taxiway portion 21 is included.

  2A and 2B, an address mark 21 a is disposed at the beginning of the taxiway portion 21, and an address mark 21 b is disposed at the end of the taxiway portion 21. A friction motor 25 is disposed corresponding to the start end portion of the guide path portion 21. The friction motor 25 has an axis extending in parallel in the vertical direction (perpendicular to the paper surface of FIG. 1) and a drive roller 26 disposed at a predetermined interval in the width direction of the carriage B (vertical direction in FIG. 2A). A driven roller 27 and a motor M that drives the drive roller 26 are included. The friction motor 25 applies driving force to the second carriage B from the most upstream (the rearmost side) among the plurality of carriages A to E.

  Five carriages A, B, C, D and E are arranged on the taxiway portion 21 to form a carriage group. The carriage F is a carriage that has already been assembled and is carried out along the guide path portion 17 by the automatic transfer machine b. The carriage G is a carriage that is next carried into the component assembly line 10, and is conveyed by the automatic conveyance machine c along the guide path portion 19. Details of the carriage A are shown in FIGS. Other carts B to G and carts X to Z have the same configuration as the cart A.

  As can be seen from FIGS. 3 and 4, the carriage A includes a frame-shaped main body 30, a plurality of rotating wheels 41, a step platform 43, a work platform 45, an intermediate plate 47, and the like. The main body 30 includes an upper left frame 31 and a lower left frame 32 extending in the front-rear direction, an upper right frame 33 and a lower right frame 34 extending in the front-rear direction, a left front frame 36 and a right front frame 37 extending in the vertical direction, and a vertical direction. An extended left rear frame 38 and right rear frame 39 are included.

  A rotating wheel 41 is attached to the lower left frame 32 and the lower right frame 34, and a step 43 is projected from the lower right frame 34. A ceiling plate 45 passed between the upper left frame 31 and the upper right frame 33 serves as a work table. A pin engaging member 48 is attached to an intermediate plate 47 disposed across the intermediate portions of the left front frame 36, the right front frame 37, the left rear frame 38, and the right rear frame 39, and a pin engagement hole 49 is formed at a predetermined position. ing. A member that crosses between the lower left frame 32 and the lower right frame 34 in the width direction is not arranged, and as a result, a passage space 50 having a predetermined height and width is defined between the intermediate plate 47 and the floor 20. (See FIG. 4).

  The connection of the carriage will be described with reference to FIG. 6 which is a broken side view of the carriage B and the carriage A. A hook member 70 extends in the upstream direction from one side in the width direction of the rear end of the carriage B (the hook member is not shown in FIG. 3). The hook member 70 includes an L-shaped main body portion 71 disposed substantially horizontally, a striking portion 72 at one end of the main body portion 71, and a claw portion 73 at the other end of the main body portion 71.

  On one side in the width direction of the front end of the carriage A located on the upstream side of the carriage B, a hooked member 75 protruding in the downstream direction is provided at a position corresponding to the hook member 70. The hooked member 75 is provided with a locking hole 76 in which the claw portion 73 of the hook member 70 can be locked. In addition, the trolley | bogie B and the trolley | bogie C, the trolley | bogie C, the trolley | bogie D, ... are connected similarly.

  The carriage B is driven by the friction motor 25, and the carriages C to E on the downstream side of the carriage B are pushed in the downstream direction by the pushing force applied to the carriage B. The carriage A is pulled by the friction motor 25.

  As shown in FIGS. 2B and 6, connection release means 80 is formed at a predetermined position on the floor 20 (slightly upstream of the address mark 21 b of the guide path portion 21). The connection release means 80 includes a moving member 81 coupled to the main body 71 of the hook member 70, a roller 82 at the lower end of the moving member 81, and a guide plate formed at a position higher than the floor 20 on which the roller 82 rolls. 83. The upper end of the moving member 81 held so as to be vertically movable is coupled to the main body 71. A roller 82 rotatably attached to the lower end of the moving member 81 rides on a guide plate 83 formed at a predetermined position above the floor 20 and can roll on the guide plate 83.

  The guide plate 83 has an inclined portion 84 that is inclined so as to become higher as it goes downstream, and a flat portion 85 that is continuous with the rear end of the inclined portion 84. When the roller 82 is not in contact with the guide plate 83, the hook member 70 is in the lowered position, and the claw portion 73 is locked in the locking hole 76. When the roller 82 comes into contact with the flat portion 85 of the guide plate 83, the hook member 70 moves to the raised position, and the claw portion 73 is removed from the locking hole 76. If necessary, the operator can hit the hitting portion 72, whereby the main body portion 71 rotates counterclockwise, and the claw portion 73 can be removed from the locking hole 76.

  FIG. 5 shows an automatic transfer machine a that carries the carriage A into the parts assembly line 10 and carries the carriage E out of the parts assembly line 10. The automatic transfer machine a includes a main body 91, a driving motor 96, a magnetic marker reading unit 97, a pin driving mechanism 101, a control panel 104, and the like. A drive motor 96 is mounted on the intermediate portion of the main body 91 supported by the plurality of rotating wheels 92, and a power source 95 is mounted on the rear. A drive wheel 98 attached to the lower surface of the main body 91 is driven by a drive motor 96, and the operation of the drive motor 96 is controlled by a control circuit disposed in the control panel 104.

  A pin driving mechanism 101 is disposed between the control panel 104 and the power source 95 near the upper surface of the main body 91. The pin drive mechanism 101 includes a hook pin 103 movably attached to the main body 91, a spring push-up mechanism (not shown), a cam driven by a motor (not shown), a cam follower (not shown), and the like. When the cam is rotated by the motor, the hook pin 103 is raised via a cam follower or the like, and can be engaged with the pin engaging hole 49 of the carriage A (see FIG. 3).

  A magnetic marker reading unit 97 disposed below the pin driving mechanism 101 reads the address marks 21a and 21b of the guide path portion 21 (see FIG. 2B), thereby controlling the operation of the automatic transfer machine a.

  FIG. 7, which is a plan view of the carriage A, shows the detection means 100 that detects the connection. The detection means 110 includes a displacement member 112 disposed on the carriage A and a detection member 118 disposed on the automatic transport machine a. The displacement member 112 is displaced immediately before the carriage A comes into contact with the carriage B, and is disposed at the front end of the carriage A, and includes a protruding portion 113, a detecting portion 114, a connecting portion 115, a spring 116, and the like. The protruding portion 113 is held so as to be movable back and forth, and the detecting portion 114 connected to the protruding portion 113 by the connecting portion 115 can be displaced in the front and rear direction (left and right direction in FIG. 7). The connecting portion 115, that is, the displacement member 112 is urged by the compression spring 116.

  The detection member 118 is disposed opposite to the displacement member 112 and receives a command to disconnect the automatic transfer machine a from the carriage A. That is, when the detection member 118 detects the displacement of the displacement portion 114, a signal to that effect is sent to the pin drive mechanism 101 almost simultaneously with the contact, and the hook pin 103 is lowered accordingly.

(Function and effect)
The operational effects of the transporting equipment for the cart of the reference example will be described with reference to FIGS. After the parts are assembled, the cart F is unloaded, and is then conveyed to the parts picking line 13 along the guide path portion 17 by the automatic conveyor b. While being conveyed by the automatic conveyance machine b along the guide path portion 18, the parts are picked. The carriage F is further conveyed by the automatic conveyance machine b along the guide path portion 19 and reaches the parts assembly line 10.

  Next, a process in which the carriage A conveyed by the automatic conveyance machine a is connected to the stopped carriage groups B to E will be described. 2A and 8A, the carriage groups B to E are arranged in the guide path portion 21, and the carriage B at the reference position P2 is sandwiched between the friction motors 25. The friction motor 25 is stopped until the carriage A reaches the connecting position P1 adjacent to the upstream side of the reference position P2, and starts to rotate when the address mark 21a is passed.

  The carriage A is conveyed along the guide path portion 19 by the automatic conveyance machine a, and when it reaches the connection position P1, it comes into contact with the carriage B at the reference position P2. At this time, since the hook member 70 of the carriage B is in the lowered position in FIG. 6, the claw portion 73 is locked in the locking hole 76 of the hooked member 75. In this way, the carriage A is connected to the carriage B as shown in FIGS. 2 (a) and 8 (a). At the time when the front surface of the carriage A comes into contact with the rear surface of the carriage B or immediately before, the claw portion 73 of the hook member 70 is engaged with the engagement hole 76 of the hooked member 75, so that the carriage A is connected to the carriage B. Is certain.

  After the carriage A is connected to the carriage B at the reference position at the connection position P1, the automatic transfer machine a is separated from the carriage A. That is, in FIG. 7, simultaneously with the carriage A contacting the carriage B, the protrusion 113 of the displacement member 112 is pushed rearward (rightward in FIG. 7) by the carriage B and resists the biasing force of the spring 116. The position of the displacement part 114 is displaced backward. The detection member 118 of the automatic transfer machine a detects this displacement, issues a command to lower the hook pin 103 to the pin drive mechanism 101, and the hook pin 103 comes out from the pin engagement hole 49 of the carriage A. Since the automatic transfer machine a is separated from the carriage A after the carriage B is connected to the carriage A, the separation is easy.

  After the carriage A is connected to the carriage B, the friction motor 25 starts to rotate and applies a driving force to the carriage B. As shown in FIGS. 8A to 8C, the four carts B, C, D, and E on the downstream side that do not have a drive source are pushed by the pushing force applied from the friction motor 25 to the cart B, and driven. The carriage A having no source is pulled, and the five carriages A to E are conveyed together at a predetermined tact speed. Here, since the carriage A connected to the carriage B is pulled by the friction motor 25 and reaches the reference position P2 from the connection position P1, the pull-in means in the conventional example becomes unnecessary.

  While the carriage A reaches the reference position P <b> 2 from the connection position P <b> 1, the worker A and B who get on the platform 43 of the carriages C and D assemble parts using a jig provided on the work table 45. After the work is finished, get off the carts C and D, walk back to the original position, and get on the next carts B and C to perform the same work.

  The automatic transport machine a separated from the carriage A has a self-running speed higher than the tact speed by the friction motor 25. As a result, as shown in FIG. 8 (b), during the assembly work on the carriages C and D, the speed in the tunnel-like passage space 50 below the carriage groups B to E is higher than that of the carriage groups B to E. And run on the downstream side. And as shown in FIG.8 (c), it arrives at the exit of the components assembly line 10 in time with the trolley | bogie E in which components assembly was complete | finished.

  When the carriage E passes through the connection release means 80 of the floor 20, the connection between the hook member 70 and the hooked member 75 of the carriage D is released. That is, when the carriage E is unloaded from the component assembly line 10, the moving member 81 and the hook member 70 are integrated as the roller 82 rides on the guide plate 83 and rolls toward the upper end of the inclined portion 84 in FIG. To rise. As a result, the claw portion 73 of the hook member 70 is detached from the locking hole 76 of the hooked member 75.

  When the automatic conveyance machine a reads the address mark 21b arranged on the downstream side of the connecting means 80, the pin driving mechanism 101 raises the hook pin 103 and engages it with the pin engaging hole 49 of the carriage E. Thereby, as shown in FIG.8 (c), the trolley | bogie E is carried out from the components assembly line 10 by the automatic conveyance machine a.

  Thus, the carriage groups B to E of the parts assembly line 10 are pushed by the friction motor 25, and the carriage E is carried out by the automatic transfer machine a that has transported the carriage A. Therefore, the number of carriages on the downstream side of the parts assembly line 10 is determined. The length can be easily adjusted by increasing or decreasing.

<Example>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, the friction motor 25 (see FIG. 2A) is not disposed on the floor 20. Further, the plurality of carriages K to N constituting the component assembly line 10 are not formed with the hook member 70 and the hooked member 75 (see FIG. 6). In FIG. 6, the front surface 77 of the carriage K and the rear surface 74 of the carriage L can come into contact with each other. Further, N is pushed from the trolley L by the automatic transport machine b which has transported the trolley K. These points are different from the first embodiment, and the other points are the same as the first embodiment. In the following, different configurations will be mainly described.

  The starting end of the guide path portion 21 is a contact position P3, and an address mark 21c is disposed corresponding to the reference position P2 on the downstream side of the entrance path. An address mark 21b is arranged corresponding to the reference position P4 on the exit side at the end of the taxiway portion 21. The plurality of carriages K to N and the carriage O have the same configuration as the carriages A to E of the first embodiment except that the hook member 70 and the hooked member 75 are not formed. A case will be described in which the second carriage L from the most downstream position is stopped at the reference position P2, and the most downstream carriage K conveyed by the automatic conveyance machine b abuts on the carriage L.

  The displacement member 112 arranged on the carriage K and the detection member 118 arranged on the automatic conveyance machine b detect the contact of the front surface 77 of the carriage K with the rear surface 74 of the carriage L, and based on that, the automatic conveyance machine b is automatically detected. The running speed has been changed. That is, the automatic transport machine b is self-propelled at the first self-propelled speed v1 in the guide path portion 19 that is largely separated from the contact position P3 on the upstream side. However, in a range where the automatic transport machine b is slightly separated from the contact position P3 (for example, a distance corresponding to the length of two to three carriages K), the self-running speed is set to the first self-running speed v1 and the second self-running speed v1. The speed is reduced to a third self-running speed v3 between the self-running speed (tact speed) v2. Thereafter, when the detection member 118 detects the displacement of the displacement member 112 when the carriage K is in contact with the carriage L, the self-running speed of the automatic transfer machine b is set to a second self-running speed (which is smaller than the third self-running speed v3). Tact speed) Deceleration to v2.

  The address mark 21c arranged on the guide path portion 21 and the reading sensor 97 of the automatic transfer machine that reads this address mark 21c detect that the automatic transfer machine b has reached the reference position P2 on the entrance side. The address mark 21c is arranged downstream from the starting end of the guide path portion 21, that is, the contact position P3 by the length of one carriage. When the automatic conveyance machine b conveys the carriage K to the reference position P2, the reading sensor 97 reads the address mark 21c, drives the pin driving mechanism 101, and pulls the hook pin 103 from the locking hole 49 of the carriage K.

(Function and effect)
Hereinafter, the operational effects of the present embodiment will be described focusing on those different from the operational effects of the comparative example. As shown in FIG. 11A, the carriage L is stopped at the reference position P2 on the entrance side. The automatic transfer machine a stands by with a little trouble at the reference position P4 on the exit side. When the carriage K conveyed by the automatic conveyance machine b reaches the contact position P3, the displacement member 112 of the carriage K is displaced upstream by the carriage L simultaneously with the contact of the carriage K with the carriage L (FIG. 7). reference). The displacement of the displacement member 112 is detected by the detection member 118 of the automatic conveyance machine b, and a command is issued to the drive motor 96 to reduce the self-running speed of the automatic conveyance machine b to the tact speed v2.

  After the carriage K comes into contact with the carriage L, the automatic transfer machine b further runs by the length of one carriage, reaches the reference position P2 on the entrance side as shown in FIGS. Is transported to the reference position P2 by the automatic transport machine b. As a result, since the trolleys L to N are pushed forward by the trolley K, it is not necessary to arrange the friction motor 25 or the like on the floor 20. Further, since the self-running speed of the automatic transfer machine b is reduced to the tact speed v2 at the contact position P3, the impact at the time of contact is small.

  After the carriage K is conveyed to the reference position P2, the automatic transfer machine b is separated from the carriage K. That is, when the reading mark 97 of the automatic conveyance machine b reads the address mark 21c arranged at the reference position P2, a command is issued to the pin driving mechanism 101, and the hook pin 103 is pulled out from the pin engaging hole 49 of the carriage K. At this time, since the automatic transport machine b is self-propelled at the tact speed v2, the hook pin 103 can be easily pulled out from the pin engaging hole 49 of the carriage K. Thereafter, as in the first embodiment, the automatic transfer machine b moves in the tunnel-like lower space 50 of the carriage groups L and M to the downstream side at a speed faster than the carriage groups L and M, and the outlet side reference Wait a little before position P4.

  When the automatic transfer machine a that has been waiting for the reference position P4 on the exit side reads the address mark 21b at the reference position P4, the hook pin 103 is protruded. Thus, at the reference position P4, the hook pin 101 is locked in the pin engaging hole 49 of the front carriage N pushed out by the automatic transfer machine b, and the carriage N is carried out.

  Next, the carriage P that has reached the contact position P3 comes into contact with the carriage K at the reference position P2 on the entrance side. As indicated by P ′, when the next carriage P is carried in early and comes into contact with the front carriage K on the upstream side of the contact position P3, the self-running speed of the automatic transfer machine d at that time is tact time. Decelerated to speed v2. Therefore, N is pushed from the carriage group K by the automatic transfer machines b and d until the carriage K reaches the reference position P2.

FIG. (A) is explanatory drawing which shows the components assembly line 10 corresponded to a 1st operation | work part, (b) is explanatory drawing which shows the guide path part of a components assembly line. It is front explanatory drawing of the automatic conveyance machine a which conveys the trolley | bogie A and this trolley | bogie. It is rear surface explanatory drawing of the cart A and the automatic conveyance machine a which conveys this cart. It is front explanatory drawing of the automatic conveyance machine a which conveys the trolley | bogie A. FIG. It is explanatory drawing of the connection piece which connects the trolley | bogie A and the trolley | bogie B. FIG. It is explanatory drawing of the detection part which detects the connection between trolley | bogies. (A) (b) And (c) is an operation explanatory view of a reference example. (A) is explanatory drawing which shows the components assembly line 10 corresponded to the 1st working part of a present Example, (b) is explanatory drawing which shows the guide path part of a components assembly line. (A) (b) And (c) is an operation explanatory view of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: 1st operation part 13: 2nd operation part 16: Taxiway 20: Work floor 25: Row drive means A, B, C, D, E: Cart a: Automatic conveyance machine 70: One connection piece 75: The other connection Piece 74: One contact surface 77: The other contact surface

Claims (2)

Multiple trolleys,
A first working unit in which a plurality of the carriages are arranged in a row; at least one second working unit; a front end of the first working unit; a second working unit; and a rear end of the first working unit A work floor including a front end of the first working unit and a guide path arranged in a loop from the rear end of the first working unit;
It can be locked to the carriage, and is self-propelled along the guide path. The carriage on the front side of the first working section passes through the second working section along the guidance path and is behind the first working section. In the transport equipment of the cart including the automatic transport machine moved to the side,
Each of the plurality of carriages has one end surface at one end and the other end surface in contact with the one end surface at the other end,
The automatic transporter carries the carts being transported to the rear side of the plurality of carts arranged in a row in the first working unit, and then all the carts are transported by the automatic transporter. A cart transportation facility characterized by having a control panel for commanding to be pushed by one cart distance. The control panel has a self-running speed of the automatic transfer machine until the carriage being conveyed by the automatic conveyance machine contacts a plurality of the carriages arranged in a row in the first working unit. The bogie transport facility according to claim 2, which instructs to decelerate the vehicle.

Images