Transport cart

Abstract

A transport cart according to the present disclosure comprises: a package-moving unit on which a package can be mounted and that moves the package horizontally forward and backward; a first direction restriction unit that is provided so as to be movable between a restriction position and a restriction release position which form a vertical relationship, and that, when in the restriction position, restricts the forward movement of the package mounted on the package-moving unit and, when in the restriction release position, permits the forward movement of the package mounted on the package-moving unit; and a control unit that executes pre-restriction release processing to control the package-moving unit so that the package is once moved backward while a forward restriction unit remains in the restriction position before moving the forward restriction unit in the restriction position to the restriction release position.

Description

[Technical field]

[0001] The present disclosure relates to a transport cart. [Background technology]

[0002] Conventionally, a transport cart that prevents a load from falling while it is being transported is known. For example, Patent Document 1 describes a transport cart that includes a transport path along which the load is transported and a stopper that prevents the load from falling. In this transport cart, the stopper is provided at the end of the transport path. The stopper is movable between a lower unrestricted position and an upper restricted position, and when in the restricted position, the stopper abuts against the load to prevent the load from falling on the transport path. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-35492 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the transport cart described in Patent Document 1, when transporting luggage, the luggage may be pressed strongly against the stopper due to vibrations or the like, which may make it impossible to move the stopper to the release position when transferring the luggage, or may require a large amount of power to move the stopper to the release position.

[0005] The present disclosure has been made to solve the above-mentioned problems, and has as its main object to make it easier to release a first direction restricting unit that restricts the movement of luggage in a horizontal first direction. [Means for solving the problem]

[0006] The transport cart of the present disclosure includes: A luggage moving unit on which luggage can be placed and which moves the luggage in a horizontal first direction and a second direction opposite to the first direction; a first direction restriction section that is movable between a restriction position and a restriction release position that are in a vertical relationship, and that restricts the movement of the luggage placed on the luggage moving section in the first direction when in the restriction position, and allows the movement of the luggage placed on the luggage moving section in the first direction when in the restriction release position; a control unit that executes a pre-restriction release process to control the luggage moving unit so that the luggage moves in the second direction while the first direction restricting unit is in the restricting position, before moving the first direction restricting unit in the restricting position to the restriction release position; It is equipped with the following:

[0007] In this transport cart, before moving the first direction regulating unit from the regulating position to the unrestricted position, a pre-release process is performed to control the luggage moving unit so that the luggage moves in the second direction while the first direction regulating unit is in the regulating position. For example, after the transport cart is transported with luggage placed on the luggage moving unit and the first direction regulating unit positioned at the regulating position, the luggage may be strongly pressed against the first direction regulating unit due to vibration or the like, making it difficult to easily move the first direction regulating unit to the unrestricted position. In the transport cart of the present disclosure, the above-mentioned pre-release process is performed, so that the first direction regulating unit can be easily moved to the unrestricted position. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram showing a schematic configuration of a component mounting system 1. [Diagram 2] FIG. 1 is an explanatory diagram showing a schematic configuration of a luggage transfer system 20. [Diagram 3] FIG. [Figure 4] 4 is an explanatory diagram showing a schematic configuration of a front regulating portion 42. FIG. [Diagram 5] FIG. 2 is an explanatory diagram showing an example of a storage device 70. [Figure 6] FIG. 2 is a block diagram showing the electrical connections of the component mounting system 1. [Figure 7] 13 is an explanatory diagram showing a state in which an engaging portion 42c and an engaged portion 63 engage with each other. FIG. [Figure 8] FIG. 2 is an explanatory diagram showing a state in which luggage 60 is placed on the luggage transfer machine 40. [Figure 9] 11 is a flowchart showing an example of a package sending processing routine. [Figure 10] FIG. 11 is an explanatory diagram showing a baggage sending process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Next, the embodiment for carrying out the present disclosure will be described with reference to the drawings. Fig. 1 is an explanatory diagram showing a schematic configuration of the component mounting system 1, Fig. 2 is an explanatory diagram showing a schematic configuration of the luggage transfer system 20, Fig. 3 is an explanatory diagram showing luggage 60, Fig. 4 is an explanatory diagram showing a schematic configuration of the front regulating unit 42, Fig. 5 is an explanatory diagram showing an example of the storage device 70, and Fig. 6 is a block diagram showing an electrical connection relationship of the component mounting system 1. The left-right direction (X-axis direction), the front-rear direction (Y-axis direction), and the up-down direction (Z-axis direction) are as shown in Figs. 1 to 5 (in Fig. 1, the up-down direction is perpendicular to the paper surface, and in Fig. 4, the left-right direction is perpendicular to the paper surface).

[0010] The component mounting system 1 includes a printer 2, a print inspection machine 3, a load transfer system 20, a component mounting line 11, a reflow device 13, an appearance inspection device 14, and a management device 80 (see FIG. 6). The printer 2 prints solder on the wiring pattern of the board S, and includes a board transport device that transports the board S, a print head, a head moving device that moves the print head, a fixed frame to which a screen mask is fixed, a control device which is a computer including a CPU, ROM, RAM, storage (e.g., HDD or SSD), etc. The print inspection machine 3 inspects the state of the solder printed on the board S by the printer 2, and includes an inspection mechanism and a control device (computer) that controls the inspection mechanism, etc.

[0011] The component mounting line 11 has a plurality of (five in this embodiment) component mounters 10 arranged along the transport direction of the board S. The component mounters 10 are devices that mount components P onto the board S on which solder has been printed by a printer 2.

[0012] The reflow device 13 is disposed downstream of the component mounting line 11. The reflow device 13 heats the board S to melt the solder, and then cools it to electrically connect the components P onto the board S and fix the components P to the board S. The visual inspection device 14 is disposed downstream of the reflow device 13. The visual inspection device 14 determines whether or not the amount of positional deviation between the actual mounting position and a predetermined target mounting position for each of the components P on the board S falls within a visual inspection tolerance range.

[0013] Prior to the description of the luggage transfer system 20, the luggage 60 to be transferred in the luggage transfer system 20 will be described. The luggage 60 is, for example, a storage case (magazine) capable of storing a cassette-type tape feeder having a tape reel around which a tape containing a plurality of parts P is wound, a tape feed mechanism, a connector, a feeder control device for controlling the tape feed mechanism, and the like. As shown in FIG. 3, the luggage 60 has a luggage body 61, a slot 62, an engaged portion 63, a clamped portion 64, a foot portion 65, and an auxiliary foot portion 66. The luggage body 61 is a rectangular parallelepiped housing. A plurality of slots 62 are provided on the bottom surface of the luggage body 61 on the rear entrance side along the left-right direction. The slots 62 can hold a tape feeder inserted into the luggage body 61 from the rear. The engaged portion 63 is a protrusion provided on the rear of the back side of the bottom surface of the luggage body 61, and can be engaged with an engaging portion 42c of a front regulating portion 42 described later. The clamped portion 64 is a protrusion provided at the front of the underside of the bottom surface of the luggage main body 61, and is clamped by a clamp mechanism 72 of the storage device 70 described below. The foot portion 65 is a member with a square cross section extending in the front-rear direction provided on the left and right sides of the underside of the bottom surface of the luggage main body 61. The auxiliary foot portion 66 is a member with an L-shaped cross section extending in the front-rear direction provided on the left and right sides of the underside of the bottom surface of the luggage main body 61, outside the foot portion 65. A space 67 is provided between the upper surface of the auxiliary foot portion 66 and the bottom surface of the luggage main body 61. The height of the auxiliary foot portion 66 is the same as the height of the foot portion 65.

[0014] 2, the luggage transfer system 20 has a transport cart 30 and a storage device 70, and transfers luggage 60 between them. The transport cart 30 includes a luggage transfer machine 40 and an automatic guided vehicle 50.

[0015] The luggage transfer machine 40 has a luggage moving section 41, a front regulating section 42, a rear regulating section 43, a luggage holding section 44, a front regulating section detection section 46 (see FIG. 6), a first luggage detection section 47, a second luggage detection section 48, and a control section 49 (see FIG. 6). The luggage moving section 41 is capable of placing luggage 60 thereon.

[0016] The luggage moving section 41 is for moving luggage 60 horizontally in opposite directions, forward and backward. The luggage moving section 41 is, for example, a drive roller conveyor having a plurality of drive rollers 41b that can rotate by receiving power from a motor 41a (see FIG. 6), and it is possible to move luggage 60 forward and backward by placing luggage 60 on the drive rollers 41b and rotating the drive rollers 41b.

[0017] The front regulating portion 42 has a main body 42b, a pin 42d, and a spring 42e. As shown in FIG. 4, the main body 42b is a rod-shaped member that is provided so as to be rotatable in the vertical direction around a shaft 42a. A claw-shaped engaging portion 42c is formed at the front end of the main body 42b. The engaging portion 42c is movable between a regulating position A1 and a deregulating position A2 that are in a vertical relationship. A spring 42e is attached to the rear end of the main body 42b. The spring 42e urges the rear end of the front regulating portion 42 downward by its elastic force. The pin 42d is connected to a vertical movement device 45 (see FIG. 6) configured as an air cylinder or a linear motor, and can be moved up and down between a lower position B1 and an upper position B2 by the power of the vertical movement device 45. When the pin 42d is positioned at the lower position B1, the rear end of the main body 42b urged downward by the spring 42e is positioned in a state where it abuts against the upper end of the pin 42d. At this time, the engagement portion 42c of the front restricting portion 42 is positioned at the restricting position A1 (see FIG. 7). On the other hand, when the pin 42d is positioned at the upper position B2, the upper surface of the pin 42d pushes the rear end portion of the main body 42b upward against the bias of the spring 42e. At this time, the engagement portion 42c of the front restricting portion 42 is positioned at the restricting release position A2.

[0018] The rear regulating portion 43 is a wall-like member that regulates the rearward movement of the luggage 60. The rear regulating portion 43 is provided at a position where it can come into contact with the rear surface of the luggage 60. The rear regulating portion 43 is formed with a groove 43a that penetrates the rear regulating portion 43 in the front-rear direction and extends in the up-down direction. As shown in Figs. 2 and 4, the rear end portion of the main body 42b of the front regulating portion 42 is inserted into the groove 43a.

[0019] The luggage retaining sections 44 are rail-shaped members provided along the front-rear direction above both the left and right sides of the luggage moving section 41. When luggage 60 is placed on the luggage moving section 41 and transported, the luggage retaining sections 44 are inserted into spaces 67 provided in auxiliary feet 66 of the luggage 60 and press the auxiliary feet 66 from above, thereby preventing the luggage 60 from floating up.

[0020] The front regulating portion detection unit 46 is a light blocking sensor that detects the position of the engaging portion 42c of the front regulating portion 42. The front regulating portion detection unit 46 outputs a detection signal that detects that the engaging portion 42c of the front regulating portion 42 is located at the unrestricted position A2.

[0021] The first luggage detection unit 47 and the second luggage detection unit 48 are light-shielding sensors located at the front and rear ends of the luggage moving section 41, respectively, and output a detection signal indicating the presence of luggage 60 when luggage 60 passes through.

[0022] The control unit 49 is a computer having a CPU 49a, a ROM 49b, a RAM 49c, a storage 49d, etc. The control unit 49 inputs a detection signal from the front regulating unit detection unit 46, inputs a detection signal from the first baggage detection unit 47, and inputs a detection signal from the second baggage detection unit 48. The control unit 49 also outputs a control signal to the vertical movement device 45, and outputs a control signal to the baggage moving unit 41. Furthermore, the control unit 49 exchanges signals with the control unit 52 of the automatic guided vehicle 50, the control unit 76 of the storage device 70, and the management device 80.

[0023] As shown in Fig. 2, the automated guided vehicle 50 has a luggage transfer machine 40 mounted on its upper surface, and is configured as, for example, an AGV (Automatic Guided Vehicle) or an AMR (Autonomous Mobile Robot). The automated guided vehicle 50 has a drive unit 51, a control unit 52 (see Fig. 6), and wheels W. The drive unit 51 is, for example, a rotationally driven motor that rotates the wheels W. The control unit 52 is a computer having a CPU, ROM, RAM, storage, etc. The control unit 52 outputs a control signal to the drive unit 51.

[0024] As shown in FIG. 5, the storage device 70 is a device for storing the luggage 60. The storage device 70 is provided between the print inspection machine 3 and the component mounting line 11. The storage device 70 has a plurality of luggage moving units 71 (two in this embodiment), a clamping mechanism 72, and a control unit 76 (see FIG. 6). The luggage moving unit 71 is, for example, a driving roller conveyor having a plurality of driving rollers 71b that can rotate by receiving power from a motor 71a (see FIG. 6), and it is possible to move the luggage 60 forward and backward by placing the luggage 60 on the driving rollers 71b and rotating the driving rollers 71b. The clamping mechanism 72 clamps the clamped portion 64 of the luggage 60 stopped at a predetermined position of the luggage moving unit 71 by clamping it from the front and rear, or releases the clamping of the clamped portion 64. The control unit 76 is a computer having a CPU, ROM, RAM, storage, etc., and outputs a control signal to the motor 71a and outputs a control device to the clamping mechanism 72.

[0025] The management device 80 is a device that manages the entire component mounting system 1, and is a computer that includes a CPU, ROM, RAM, storage, etc., and is connected to input devices such as a keyboard and a mouse, and a display. The storage of the management device 80 stores a production program for the board S, production information related to the production of the board S, etc. The production program here specifies the mounting order of the components P on the board S in the multiple component mounters 10 in the component mounting system 1, the production number of the boards S, etc. The management device 80 outputs a control signal to the printer 2, outputs a control signal to the print inspection machine 3, outputs a control signal to the component mounter 10, outputs a control signal to the reflow device 13, and outputs a control signal to the appearance inspection device 14.

[0026] Next, the operation of the transport cart 30 will be described. After the transport cart 30 transfers the luggage 60 to the luggage transfer machine 40 in a warehouse (not shown), the transport cart 30 moves from the warehouse to in front of the storage device 70 of the component mounting system 1 and transfers the luggage 60 to the storage device 70. This series of operations will be described in detail below. Note that the warehouse is located in a place different from the place where the component mounting system 1 is installed.

[0027] First, the luggage 60 is transferred to the luggage transfer machine 40 in a warehouse. The luggage 60 is moved to the luggage moving section 41 from the side of the luggage transfer machine 40 where the rear regulating section 43 is not provided. At this time, as shown in FIG. 8, the luggage pressing section 44 of the luggage transfer machine 40 enters the space 67 of the auxiliary foot section 66 of the luggage 60, and the luggage 60 is transferred by the driving roller 41b of the luggage moving section 41. Then, when the engaged section 63 of the luggage 60 reaches a position facing the engaging section 42c of the front regulating section 42, the control section 49 stops the luggage moving section 41. Next, the control section 49 controls the vertical movement device 45 to move the pin 42d to the upper position B2. Then, the engaging section 42c of the front regulating section 42 moves to the regulating position A1 and engages with the engaged section 63 of the luggage 60 (see FIG. 7). This restricts the forward movement of the luggage 60. In this state, the drive unit 51 of the transport cart 30 is controlled by the control unit 52 of the automatic guided vehicle 50, and the transport cart 30 automatically moves from the warehouse to the storage device 70.

[0028] While the transport cart 30 moves from the warehouse to the storage device 70, the forward movement of the luggage 60 is restricted by the front restricting portion 42, and the rearward movement is restricted by the rear restricting portion 43. Therefore, the luggage 60 on the luggage moving portion 41 does not move significantly in the front-to-rear direction. In addition, since the luggage 60 is restricted from moving up and down by the luggage holding portion 44, it does not move significantly in the vertical direction.

[0029] When the transport cart 30 arrives at the storage device 70, the control unit 52 of the automated guided vehicle 50 stops driving the drive unit 51. At this time, the transport cart 30 and the storage device 70 are in the positional relationship shown in Fig. 2 (however, the baggage 60 is placed on the baggage transfer machine 40). Next, the control unit 49 of the baggage transfer machine 40 reads and executes the baggage sending out processing routine stored in the storage 49d.

[0030] When this routine is started, the CPU 49a executes pre-restriction release processing to move the luggage 60 backward (S100). Specifically, the CPU 49a drives and controls the motor 41a of the luggage moving unit 41 to rotate the drive roller 41b from the front to the rear so that the luggage 60 moves backward once while the front regulating unit 42 is in the regulating position A1, as shown in FIG. 10A. The amount of movement at this time is, for example, several mm to several cm. As a result, even if the engaging portion 42c of the front regulating unit 42 and the engaged portion 63 of the luggage 60 are tightly engaged while the transport cart 30 is moving from the warehouse to the storage device 70, the engagement between the engaging portion 42c of the front regulating unit 42 and the engaged portion 63 of the luggage 60 is relaxed by executing the pre-restriction release processing.

[0031] Next, the CPU 49a controls the vertical movement device 45 to move the pin 42d to the upper position B2 as shown in FIG. 10B, thereby moving the engagement portion 42c of the front regulating portion 42 toward the restriction release position A2 (S110). Next, the CPU 49a judges whether the engagement portion 42c of the front regulating portion 42 has moved to the restriction release position A2 (S120). If the CPU 49a receives a detection signal of the engagement portion 42c of the front regulating portion 42 from the front regulating portion detection portion 46, the CPU 49a judges that the engagement portion 42c of the front regulating portion 42 has moved to the restriction release position A2. On the other hand, if the CPU 49a does not receive a detection signal of the engagement portion 42c of the front regulating portion 42 from the front regulating portion detection portion 46, the CPU 49a judges that the engagement portion 42c of the front regulating portion 42 has not moved to the restriction release position A2.

[0032] If it is determined in S120 that the engaging portion 42c of the front regulating portion 42 has not moved to the restriction release position A2, the CPU 49a returns to S110 again. On the other hand, if it is determined in S120 that the engaging portion 42c of the front regulating portion 42 has moved to the restriction release position A2, the CPU 49a moves the luggage 60 forward (S130). Specifically, as shown in Fig. 10C, the CPU 49a drives and controls the motor 41a of the luggage moving portion 41 to move the drive roller 41b from the rear to the front so that the luggage 60 moves forward.

[0033] Next, the CPU 49a judges whether the baggage 60 has moved to a predetermined position (S140). Specifically, if the detection signal from the first baggage detector 47 is no longer input, the CPU 49a judges that the baggage 60 has moved to a predetermined position. On the other hand, if the detection signal from the first baggage detector 47 is being input, the CPU 49a judges that the baggage 60 has not moved to the predetermined position.

[0034] If it is determined in S140 that the luggage 60 has not been moved to the predetermined position, the CPU 49a returns to 130 again. On the other hand, if it is determined in S140 that the luggage 60 has been moved to the predetermined position, the CPU 49a outputs an instruction to the control unit 76 of the storage device 70 to pull in the luggage 60 (S150), and ends this routine.

[0035] After inputting the pull-in command, the control unit 76 of the storage device 70 controls the motor 71a to pull the luggage 60 into the storage device 70, and then stops the luggage 60 at a position where the clamped portion 64 of the luggage 60 faces the clamping mechanism 72, and controls the clamping mechanism 72 so that the clamping mechanism 72 engages with the clamped portion 64.

[0036] Here, the correspondence between the components of this embodiment and the components of the present disclosure will be clarified. The luggage moving unit 41 of this embodiment corresponds to the luggage moving unit of the present disclosure, the front regulating unit 42 corresponds to the first direction regulating unit, and the control unit 49 corresponds to the control unit. In addition, the rear regulating unit 43 corresponds to the second direction regulating unit, the luggage holding unit 44 corresponds to the luggage holding unit, and the front regulating unit detection unit 46 corresponds to the detection unit.

[0037] In the transport cart 30 described above, before moving the engagement portion 42c of the front regulating portion 42 in the regulating position A1 to the unrestricted position A2, a pre-restriction release process is performed to control the luggage moving portion 41 so that the luggage 60 moves backward while the front regulating portion 42 is in the regulating position A1. For example, after the transport cart 30 is transported with the luggage 60 placed on the luggage moving portion 41 and the front regulating portion 42 positioned at the regulating position A1, the luggage 60 may be strongly pressed against the engagement portion 42c of the front regulating portion 42 due to vibration or the like, making it difficult to easily move the front regulating portion 42 to the unrestricted position A2. Even in such a case, the transport cart 30 performs the above-mentioned pre-restriction release process, so that the engagement portion 42c of the front regulating portion 42 can be easily moved to the unrestricted position A2.

[0038] The transport cart 30 is provided with a wall-like rear regulating portion 43 that is disposed at a position where it can come into contact with the rear surface of the luggage 60 and regulates the rearward movement of the luggage 60. Therefore, when the engagement portion 42c of the front regulating portion 42 is in the regulation position A1, the luggage 60 is restricted from both forward and rearward movement.

[0039] Furthermore, the transport cart 30 is provided with a luggage hold-down section 44 provided along the front or rear above the luggage moving section 41. Therefore, it is possible to prevent the luggage 60 placed on the luggage moving section 41 from floating up.

[0040] Furthermore, the transport cart 30 is equipped with a front regulating part detection unit 46 that detects the position of the engaging part 42c of the front regulating part 42, and when moving the luggage 60 forward, the control unit 49 inputs a signal from the front regulating part detection unit 46 that detects that the engaging part 42c of the front regulating part 42 is at the restriction release position A2, and then controls the motor 41a of the luggage moving unit 41 so that the luggage 60 moves forward. In other words, since the luggage 60 is moved forward after confirming that the engaging part 42c of the front regulating part 42 is at the restriction release position A2, it is possible to prevent problems caused by moving the luggage 60 forward before the engaging part 42c of the front regulating part 42 moves to the restriction release position A2.

[0041] In addition, the transport dolly 30 has an engaged portion 63 on the bottom surface of the baggage 60. The front regulating portion 42 has a main body 42b that can rotate in the vertical direction around the shaft 42a, and an engaging portion 42c that is provided at the end of the main body 42b and engages with the engaged portion 63 to regulate the forward movement of the baggage 60 when the front regulating portion 42 is in the regulating position A1. The front regulating portion 42 can move between the regulating position A1 and the unrestricted position A2 by the main body 42b rotating around the shaft 42a. In such a transport dolly 30, the engaging portion 42c of the front regulating portion 42 and the engaged portion 63 of the baggage 60 are strongly engaged with each other in relatively many cases, making it difficult to easily move the engaging portion 42c of the front regulating portion 42 to the unrestricted position A2, so that the application of the transport dolly 30 is highly significant.

[0042] It goes without saying that the present invention is not limited to the above-described embodiment, and can be embodied in various forms within the technical scope of the present invention.

[0043] For example, in the above-described embodiment, the transport cart 30 has the baggage transfer machine 40 and the automated guided vehicle 50, but is not limited thereto. For example, the transport cart 30 may not have the automated guided vehicle 50, and wheels may be provided directly on the baggage transfer machine 40. In this case, an operator may transport the baggage transfer machine 40, or a separate automated guided vehicle may tow the baggage transfer machine 40.

[0044] In the above-described embodiment, the front regulating portion 42 is provided behind the luggage moving portion 41, but is not limited thereto. For example, the front regulating portion 42 may be provided in front of the luggage moving portion 41.

[0045] In the above-described embodiment, the front regulating portion 42 regulates the forward movement of the luggage 60 by engaging the claw-shaped engaging portion 42c with the protruding engaged portion 63 provided on the luggage 60, but is not limited thereto. For example, the front regulating portion 42c provided at the tip of the main body 42b may regulate the forward movement of the luggage 60 by engaging with the concave engaged portion 63 provided on the bottom surface of the luggage 60. In addition, the front regulating portion 42 may be a plate-like or rod-like member provided to be movable up and down, and the front regulating portion 42 may be inserted into the concave engaged portion 63 to regulate the forward movement of the luggage 60, or may slip out downward from the engaged portion 63 to allow the forward movement of the luggage 60, or the front regulating portion 42 may protrude forward from the luggage 60 to regulate the forward movement of the luggage 60, or may be inserted into the front of the luggage 60 to allow the forward movement of the luggage 60.

[0046] In the above-described embodiment, it is confirmed that the engaging portion 42c of the front regulating portion 42 is in the restriction release position A2 by inputting a detection signal from the front regulating portion detector 46, but this is not limiting. For example, it may be confirmed that the engaging portion 42c of the front regulating portion 42 is in the restriction release position A2 based on the elapsed time from when the front regulating portion 42 starts to move downward.

[0047] In the above-described embodiment, the cargo 60 is assumed to house a tape feeder, but is not limited thereto. The cargo 60 may house components used in devices other than the component mounter 10, such as a screen mask used by the printer 2 to print solder on the board S. Alternatively, the cargo 60 may house various components used by a work machine that performs a predetermined operation on the board S (such as the printer 2, the print inspection machine 3, the component mounter 10, the reflow machine 13, the appearance inspection machine 14, etc.).

[0048] The transport cart of the present disclosure may be configured as follows.

[0049] The transport cart of the present disclosure may include a wall-shaped second direction regulating part that is provided at a position capable of contacting the surface of the luggage on the second direction side and regulates the movement of the luggage in the second direction. In this way, when the first direction regulating part is in the regulating position, the movement of the luggage in both the first direction and the second direction is restricted.

[0050] The transport cart of the present disclosure may include a luggage pressing unit provided above the luggage moving unit along the first direction or the second direction, thereby preventing luggage placed on the luggage moving unit from floating up.

[0051] The transport cart of the present disclosure may include a detection unit that detects the position of the first direction regulating unit, and the control unit may control the luggage moving unit to move the luggage in the first direction after receiving a signal from the detection unit that the first direction regulating unit is in the unrestricted position when moving the luggage in the first direction. In this way, the luggage is moved in the first direction after confirming that the first direction regulating unit is in the unrestricted position, thereby preventing problems that would occur if the luggage were moved in the first direction before the first direction regulating unit moves to the unrestricted position.

[0052] In the transport cart of the present disclosure, the luggage may have an engaged part on its bottom surface, the first direction regulating part may have a main body that is rotatable in the vertical direction around an axis, and an engaging part that is provided at an end of the main body and engages with the engaged part to regulate the movement of the luggage in the first direction when the first direction regulating part is in the regulating position, and the main body may be movable between the regulating position and the unrestricted position by rotating around the axis. In such a transport cart, it is relatively common that the engaging part of the first direction regulating part and the engaged part of the luggage strongly engage with each other, making it difficult to easily move the first direction regulating part to the unrestricted position, so that the application of the transport cart of the present disclosure is highly significant. [Industrial Applicability]

[0053] The present disclosure is applicable to the industry of manufacturing substrates on which components are mounted. [Explanation of symbols]

[0054] 1 component mounting system, 2 printing machine, 3 printing inspection machine, 10 component mounting machine, 11 component mounting line, 13 reflow device, 14 appearance inspection device, 20 luggage transfer system, 30 transport cart, 40 luggage transfer machine, 41 luggage moving unit, 41a motor, 41b drive roller, 42 front regulating unit, 42a shaft, 42b main body, 42c engagement unit, 42d pin, 42e spring, 43 rear regulating unit, 43a groove, 44 luggage holding unit, 45 up and down movement device, 46 front regulating unit detection unit, 47 first luggage detection unit, 48 second luggage detection unit, 49 control unit, 49a CPU, 49b ROM, 49c RAM, 49d storage, 50 automated guided vehicle, 51 drive unit, 52 control unit, 60 luggage, 61 luggage main body, 62 slot, 63 Engaged part, 64 clamped part, 65 foot part, 66 auxiliary foot part, 67 space, 70 storage device, 71 luggage moving part, 71a motor, 71b drive roller, 72 clamp mechanism, 76 control part, 80 management device, A1 restricting position, A2 unrestricted position, B1 lower position, B2 upper position, L cross section, P part, S board, W wheel.

Claims

1. a luggage moving unit capable of placing luggage thereon and moving the luggage in a horizontal first direction and a second direction opposite to the first direction; a first direction restricting section that is movable between a restricting position and a restricting release position that are in a vertical relationship, and that restricts the movement of the luggage placed on the luggage moving section in the first direction when in the restricting position, and allows the movement of the luggage placed on the luggage moving section in the first direction when in the restricting release position; a control unit that executes a pre-restriction release process to control the luggage moving unit so that the luggage moves in the second direction while the first direction restriction unit is in the restriction position, before moving the first direction restriction unit in the restriction position to the restriction release position; A transport cart equipped with

2. The transport cart according to claim 1, a wall-shaped second direction restricting portion provided at a position capable of contacting a surface of the luggage on the second direction side, the wall-shaped second direction restricting movement of the luggage in the second direction; A transport cart equipped with

3. The transport cart according to claim 1 or 2, A luggage holding section provided above the luggage moving section along the first direction or the second direction. A transport cart equipped with

4. The transport cart according to any one of claims 1 to 3, A detection section for detecting a position of the first direction restricting section Equipped with The control unit, when moving the luggage in the first direction, inputs a signal from the detection unit detecting that the first direction regulating unit is in the regulating release position, and then controls the luggage moving unit to move the luggage in the first direction.

5. The luggage has an engaged portion on a bottom surface thereof, The first direction regulating part has a main body that can rotate in the vertical direction around an axis, and an engaging part that is provided at an end of the main body and engages with the engaged part to regulate the movement of the luggage in the first direction when the first direction regulating part is in the regulating position, and the main body can move between the regulating position and the unrestricted position by rotating around the axis. A transport cart according to any one of claims 1 to 4.

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