JPH0654450B2 - Storage / receipt device - Google Patents

Description

The present invention relates to a loading and unloading device for loading and unloading transported objects such as drums into and out of a warehouse.

Generally, in loading and unloading work in a warehouse, in the case of loading, all the transported objects carried by a truck, a forklift, etc. are unloaded at a time to a temporary storage area in the warehouse and then transferred to a predetermined storage position in the warehouse. On the other hand, in the case of unloading, on the contrary, they are once collectively collected in the temporary storage area and then loaded on a truck or the like and carried out.

Therefore, a temporary storage space and a working space were required in the warehouse, and a large door was installed for loading and unloading trucks and loading and unloading work, which had to be opened for a long time during loading and unloading work. . In addition, it was necessary for humans to operate the forklift and sort the transported goods in the warehouse.

By the way, in the warehouse, in order to maintain the quality of stored items, it is necessary to prevent dust and humidity from rising and extreme temperature rising, and in recent years, due to the growth of precision equipment, electronic devices, food, and pharmaceutical industries, these products The requirements for the storage environment have become particularly severe. Further, in a high temperature warehouse or a frozen warehouse, a large amount of energy is required to maintain the temperature inside the warehouse, and the working conditions of the workers inside the warehouse are very severe.

An object of the present invention is to provide an automatic loading / unloading apparatus that can reduce the work space for loading / unloading in a warehouse, maintain a good storage environment in the warehouse, and save energy.

In order to achieve the above object, the present invention provides a door provided at a loading / unloading port of a warehouse and operated by an opening / closing means to open / close the loading / unloading port, and one end of which is provided in the loading / unloading port in the warehouse. A first transport mechanism, a second transport mechanism provided at the outside of the warehouse with one end located at the carry-in / out port and a transport direction aligned with the transport direction of the first transport mechanism, and inside and outside the warehouse. A drive transmission unit that is provided by being inserted into a through hole that penetrates the first transfer mechanism and the second transfer mechanism, and a drive unit that drives the first and second transfer mechanisms; The gripping device, the sequence control mechanism, and the second transport mechanism, which are provided on the one end side, are provided to detect the transported object transported by the second transport mechanism during the warehousing operation and output a detection signal to the sequence control mechanism. Output to
A first position detection mechanism for opening the door by operating the opening / closing means while stopping the first and second transport mechanisms, and a detection signal is output to the sequence control mechanism by detecting that the door is fully opened. Full-open detector for warehousing the first and second transport mechanisms that are stopped while stopping the storage, and an object to be transported that is disposed by the one end of the first transport mechanism and is transported by the first transport mechanism during the unloading operation. A second position detecting mechanism for detecting the above, outputting a detection signal to the sequence control mechanism, and stopping the first and second transport mechanisms while opening the door;
It is arranged on the other end side of the first transport mechanism, detects a transported object transported by the first transport mechanism during a warehousing operation, outputs a detection signal to the sequence control mechanism, While stopping, the opening / closing means is operated for a predetermined time to close the door, and further the gripping device is operated to transport the detected object to be conveyed from the first transport mechanism to another position. Third position detection for detecting that the conveyed object is conveyed on the first conveying mechanism, outputting a detection signal to the sequence control mechanism, and separating the grasping device from the conveyed object conveyed on the first conveying mechanism The mechanism and the first and second stop mechanisms that detect the fact that the device grasps the object to be conveyed on the first conveying mechanism and conveys it to a predetermined position during the warehousing operation, and outputs a detection signal to the sequence control mechanism. Storage mechanism When the gripping device that moves the object to be conveyed on the first conveying mechanism and separates the object to be conveyed has reached a predetermined position, a detection signal is output to the sequence control mechanism to stop the operation. A transport detector that operates the first and second transport mechanisms to move out, and a transport detector that is disposed on the other end side of the second transport mechanism and detects the transported object that is transported by the second transport mechanism during the shipping operation and outputs a detection signal. A fourth position detecting mechanism for outputting to the sequence control mechanism and closing the door is provided, and at least one of the first transport mechanism and the second transport mechanism is a roller conveyor, and one end side of the transport mechanism that is a roller conveyor is provided. The position detecting mechanism provided is a detection actuating member that is arranged vertically along a roller that constitutes the roller conveyor and apart from the roller, and the detection actuating member is urged upward to bias the roller. Transport surface An elastic member which slightly protrude Luo upwardly and configured to include a switch means for detecting a drop in detection operating member by the transported object which is conveyed by the roller conveyor.

The detection operation body may be composed of a rotatable roller.

An embodiment of the present invention will be described below with reference to the drawings.

C1, C2 and C3 in FIGS. 3 and 4 are roller conveyors (conveyance mechanisms), respectively. The roller conveyor C1 has one end thereof aligned with the carry-in / out port 1 formed in the side wall of the warehouse A, and is arranged in the warehouse A at a right angle to the outer wall. Further, the roller conveyor C2 is continuously connected to the roller conveyor C1 via the door 2 that opens and closes the loading / unloading port 1 so that the carrying direction is the same, and the roller conveyor C3 is continuous with the roller conveyor C2 by the carrying direction. It is set up.

Further, stoppers 3 for stopping the drums (objects to be conveyed) D being transferred are respectively provided at the other end of the roller conveyor C1 and the end of the roller conveyor C3 farther from the warehouse A. In addition, 4 is a roller conveyor C
This is a guide member for smoothly transferring the drum can D between C2 and C3.

In each of the roller conveyors C1, C2, C3, the guide frame 5 is supported by the fixing member 6, and the guide frame 5
, A plurality of fixed shafts 7 (FIG. 5) are fixed in a direction orthogonal to the lengthwise direction, and rollers 9 are rotatably attached to the fixed shafts 7 via bearings 8. Are attached to both ends of each fixed shaft 7
While the movement of the roller 9 in the axial direction is restricted by 1, the two sprockets 12 and 13 are attached to one end (the left end in FIG. 5) of each roller 9. 14 is
A cover for covering the sprockets 12 and 13.

Roller 9 of each roller conveyor C1, C2, C3
Each roller 9 is attached to the outer sprocket 12 of
A chain 15 for connecting the members is wound around.

Further, as shown in FIG. 6, the chain 18 is attached to the sprocket 13 inside the roller 9-1 on one end side of the roller conveyor C1 and the two sprockets 16 and 17 provided at the lower part of one end of the roller conveyor C1. The chain 18 passes through a through hole 20 formed in the warehouse foundation portion 19 and passes through two sprockets 21 provided at the lower end portion of the roller conveyor C2 on the warehouse A side.
22 and 2 from the warehouse A side of the roller conveyor C2
The third and third rollers 9-2 and 9-3 are wound around the inner sprockets 13 and 13.

And these sprockets 13, 16, 17, 2
Roller conveyor C with 1, 22 and chain 18
A drive transmission means 23 that connects 1, C2 is configured.

Below the roller conveyor C2, a motor (driving means) M for driving the roller conveyors C1 and C2.
1 is installed, and this motor M1 is a chain 2
4 is connected to the inner sprockets 13 of two adjacent rollers 9 of the roller conveyor C2 located above the motor M1.

Then, by driving the motor M1, all the rollers 9 of the roller conveyor C2 rotate in the same direction via the chains 24 and 15, and all the rollers 9 of the roller conveyor C1 interlock via the drive transmission means 23. Then, it is adapted to rotate in the same direction as the roller 9 of the roller conveyor C2.

A motor M2 for driving the roller conveyor C3 is installed below the roller conveyor C3 on the warehouse A side. The motor M2 is located above the motor M2 via the chain 25.
Sprocket 1 inside two adjacent rollers 9 of
It is connected to 3,13. By driving the motor M2, all the rollers 9 of the roller conveyor C3 rotate in the same direction via the chains 25 and 15.

A position detection mechanism PD1 is installed at the end of the roller conveyor C2 on the roller conveyor C3 side. Further, the position detection mechanism PD2 detects one drum can D1 at the time of warehousing, after the center of gravity of one drum can D1 moves to the roller conveyor C2 and before the center of gravity of the next drum can D2 moves to the roller conveyor C2. The setting position is set based on the width of the conveyor (arrangement state of the conveyed objects), the conveying speed of the conveyor, the shape of the conveyed objects, and the like. Furthermore, roller conveyor C2
A position detection mechanism PD3 for stopping the drum D in front of the door 2 at the time of warehousing is installed at the end on the side of the warehouse A.

A position detection mechanism PD4 for stopping the drum can D immediately before the door 2 is installed at one end of the roller conveyor C1 at the time of leaving, and the drum can D is provided at the other end of the roller conveyor C1. A position detection mechanism PD5 is provided for detecting that the position detection mechanism PD5 is located at the end.

At the end of the roller conveyor C3 on the side of the roller conveyor C2, a position detecting mechanism PD6 for setting the distance between the drums D for closing the distance between the drums D at the time of shipping is installed, and the end on the opposite side of the roller conveyor C3. In the department,
A position detection mechanism PD7 for detecting that the drum can D has reached the position of the stopper 3 at the time of leaving the warehouse is provided.

As shown in FIG. 1 and FIG. 2, each of the position detecting mechanisms PD1 to PD7 is mounted on a reinforcing frame 26 fixed between a pair of fixing members 6 and 6 via a supporting plate 27, and Two support cylinders 28 are installed, and in parallel between the rollers 9,
A cylindrical detection actuating body 29 having substantially the same width as the roller 9 is installed, and two support rods 30 fixed to the lower portion of the detection actuating body 29 are respectively the support cylinder 28 and
The support rod 27 and the reinforcing frame 26 are provided so as to penetrate through the insertion holes 27a and 26a, respectively, and the support rod 3
Spring (elastic member) 3 installed between 0 and the support cylinder 28
1, the detection actuating body 29 is supported so as to be retractable from the upper end portion (conveying surface) of the roller 9, and when the drow can D comes into contact with the detection actuating body 29 and pushes down the detection actuating body 29, detection is performed. The lower end of the actuating body 29 turns on a limit switch (switch means) 32.

The position detection mechanisms PD1 to PD7 are electrically connected to the sequence control mechanism 33, respectively, and the crane gripping device 34 that grips the drum can D and moves it up and down.
An upper limit detector (transportation detector) 35 for detecting the upper limit position (see FIG. 3) and a fully open detector 36 for detecting the fully open state of the door 2 are electrically connected to the sequence control mechanism 33. .

The sequence control mechanism 33 performs sequence control according to a program incorporated in advance, and each position detection mechanism PD1 to PD7 and each detector 35, 3 are provided.
According to the signal with 6, each roller conveyor C1, C2
The motors M1 and M2 for driving C3 and the motor (opening / closing means) M3 for opening and closing the door 2 are controlled to be started and stopped.

Next, the operation of the loading and unloading device configured as described above will be described.

In the case of the storage operation, first, the drums D are arranged on the roller conveyor C3 by a forklift or manually, and then the operation is started manually. When the operation is started, the sequence control mechanism 33 activates each of the motors M1 and M2, so that the motor M1 causes the roller conveyor C2,
The roller conveyor C1 is interlocked via the drive transmission means 23 to be driven so as to convey the drum can D on the conveying path from the roller conveyor C2 side to the roller conveyor C1 side, and the roller conveyor conveys the drum can D by the motor M2. It is driven so as to be transported to the roller conveyor C2 side.

Therefore, the drum can D on the roller conveyor C3 is transferred to the warehouse A side, and the detection operation body 2 of the position detection mechanism PD6.
9 is contacted, and the horizontal force of the detection actuator 29 is applied.
At this time, the support rod 3 fixed to the lower portion of the detection actuating body 29
Since 0 is guided by the support cylinder 28 and the insertion holes 27a and 26a, the horizontal force received by the detection actuating body 29 causes the support rod 30 to descend in opposition to the elastic force of the spring 31,
Therefore, the detection actuating body 29 sinks from the conveying surface. Therefore, the drum can D is smoothly transferred without being hindered by the detection operation body 29.

By lowering the detection actuating body 29, the position detection mechanism PD
The limit switch 32 of No. 6 is reliably turned on, and the detection signal thereof is input to the sequence control mechanism 33. Based on this detection signal, the sequence control mechanism 33 sends a command signal to each of the motors M1, M2, M3. Since no output is made, the drum can D that has reached the position of the position detection mechanism PD6 passes through that position and is conveyed as it is.

Then, when the drum can D comes into contact with the detection actuating body 29 of the position detection mechanism PD1 (when it comes to the end of the roller conveyor C2 on the roller conveyor C3 side), the drum can D is transferred as in the case of the position detection mechanism PD6 described above. Is the detection actuator 2
9 is smoothly transported and the position detection mechanism PD
1 reliably outputs a detection signal to the sequence control mechanism 33, but the sequence control mechanism 33 does not output a command signal to the motors M1, M2, M3 based on this detection signal, so that the drum can D is In this state, it passes through the position of the position detection mechanism PD1.

Subsequently, when the drum can D pushes down the detection actuation body 29 of the position detection mechanism PD2 and the detection signal of the position detection mechanism PD2 is input to the sequence control mechanism 33, the sequence control mechanism 33 stops the motor M2. Therefore, the operation of the roller conveyor C3 is stopped, and the roller conveyor C2
Only one drum can D separated above is conveyed to the warehouse A side, and the other drum cans D remain on the roller conveyor C3 and are stopped.

Then, the drum can D on the roller conveyor C2 is
When the detection signal is detected by the position detection mechanism PD3 and the detection signal is input to the sequence control mechanism 33, the sequence control mechanism 33 stops the motor M1, stops the operation of the roller conveyors C1 and C2, and moves the roller conveyor C2. The conveyance of the drum can D is stopped and the motor M3 is activated to open the door 2.

When the door 2 is fully opened and the signal from the fully open detector 36 is input to the sequence control mechanism 33, the sequence control mechanism 33
Stops the motor M3 and keeps the door 2 fully open, and also starts the motor M1 to start the roller conveyor C.
The drum can D on 2 is transferred onto the roller conveyor C1 in the warehouse A.

Further, when the drum can D passes through the position detection mechanism PD4, a detection signal is input from the position detection mechanism PD4 to the sequence control mechanism 33.
Does not output a command signal to each motor M1, M2, M3. Then, the drum can D is the position detection mechanism PD5.
When it comes to the top (when it reaches the other end of the roller conveyor C1), the sequence control mechanism 33 activates the motor M3 for a predetermined time to close the door 2 and stops the motor M1 by the detection signal of the position detection mechanism PD5. The conveyance of the conveyors C1 and C2 is stopped, and then the crane gripping device 34 is lowered.

Subsequently, the crane holding device 34 holds and raises the drum can D reaching the other end of the roller conveyor C1. When the crane gripping device 34 reaches the upper limit position, the rising of the crane gripping device 34 is stopped by the detection signal of the upper limit detector 35, and the drum can D is moved in the horizontal direction and conveyed to a predetermined position.

When the detection signal from the upper limit detector 35 enters the sequence control mechanism 33, each motor M of the roller conveyor is
1, M2 receives commands, roller conveyors C1, C2
C3 starts operating. Then, the sequence control mechanism 33
Repeats the above-described procedure (sequence) until all the drums D are loaded into the warehouse A, and when the loading of all the drums D is completed, the clerk manually turns off the loading / unloading device.

Next, in the case of the delivery operation, first, when the crane carries the drum can D from a predetermined position in the warehouse A and places it on the roller conveyor C1 on the position detection mechanism PD5, the detection signal of the position detection mechanism PD5 causes Crane gripping device 3
4 releases drum D and begins to rise.

When the crane gripping device 34 reaches the upper limit position, the sequence control mechanism 33 activates the motor M1 by the detection signal of the upper limit detector 35 to drive the roller conveyors C1 and C2.

When the roller conveyors C1 and C2 move, the drum can D on the roller conveyor C1 is conveyed toward the outside of the warehouse A, and when the drum can D reaches the position of the position detection mechanism PD4, the detection signal of the position detection mechanism PD4 causes The sequence control mechanism 33 stops the motor M1, stops the roller conveyors C1 and C2, and activates the motor M3 to open the door 2.

When the door 2 is fully opened, the sequence control mechanism 33 stops the motor M3 and activates the motor M1 by the detection signal from the fully open detector 36 to activate the roller conveyor C.
1, the operation of C2 is started, and the drum can D on the roller conveyor C1 is transferred to the roller conveyor C2 outside the warehouse A.

Next, when the drum can D on the roller conveyor C2 passes over the position detection mechanism PD3, the detection signal of the position detection mechanism PD3 is input to the sequence control mechanism 33. The sequence control mechanism 33 uses each signal based on this signal. No command is output to M1, M2, and M3. And
When the drum can D reaches the position detection mechanism PD2, the sequence control mechanism 33 activates the motor M3 and closes the door 2 by the detection signal of the position detection mechanism PD2.

Then, when the drum can D reaches the position detection mechanism PD1, the sequence control mechanism 33 activates the motor M2 by the detection signal of the position detection mechanism PD1 to operate the roller conveyor C3. Therefore, the drum can D is transferred from the roller conveyor C2 to the roller conveyor C3.

Then, when the drum can DD reaches the position detection mechanism PD6, the sequence control mechanism 33 stops the motors M1 and M2 and stops the roller conveyors C1, C2 and C3 in accordance with the detection signal of the position detection mechanism PD6. Therefore, the drum can D stops at the position defined by the position detection mechanism PD6.

Next, the crane gripping device 34 waiting on the next drum can D is lowered to the upper limit position, and the above procedure is repeated.

In this way, the drum cans D are lined up on the roller conveyor C3 at intervals set by the position detection mechanisms PD1 and PD6, and when the most advanced drum can D reaches the position of the position detection mechanism PD7. Motor M
1, M2 are stopped. And the roller conveyor C3
The drums D lined up are transported by a forklift or the like to complete the shipping operation.

The loading and unloading work is performed as described above, but at this time, even if the drums D transported on the transport paths of the roller conveyors C1, C2, C3 are displaced in the width direction of the transport path, they are transported. Also, each position detection mechanism PD1
Since the detection operation body 29 of the PD 7 has substantially the same length as the roller 9 of the roller conveyor and is arranged in parallel with the roller 9, it can be reliably pushed down by the transported object D.

Further, since the conveyed object D pushes the detection actuating body 29 without being offset to the left and right, unlike the normal detection mechanism that outputs a detection signal by touching one side surface of the conveyed object, the detection actuating body of the position detecting mechanism is detected. By 29, the posture is not changed to the left or right, and the direction is not changed. Moreover, if the spring 31 of the position detecting mechanism has an appropriate elastic force, the elastic force acts as a resistance and suppresses the inertial movement of the transported object D, so that the transported object D stops accurately at a predetermined position. . Therefore, the position detection mechanism PD3
In the case of PD4, the transported object D should be placed in front of the door 2
Can be stopped without touching the
In the case of the position detection mechanism PD5, the crane gripping device 34
The transported object D can be accurately stopped at the grip position.

On the other hand, since the detection actuating body 29 is reliably pushed down, the limit switch 32 is turned on properly without causing malfunction.

In the above embodiment, the detection actuating body 29 has been described as having a cylindrical shape, but the present invention is not limited to this, and may have a semicircular cross section or a triangular shape with smooth vertices. The structure may be such that it easily descends to the transport surface and does not obstruct the transported object when passing the transported object.

FIG. 7 shows an example of another position detecting mechanism. In this example, instead of the detection actuating body 29 shown in FIG.
A support frame 40 fixed to the upper end of the support rod 30, a support shaft 41 fixed to both ends of the support frame 40, and the support shaft 4
1 is different from that in FIG. 1 in that a detection actuating member 44 including a detection roller 43 rotatably supported via a bearing 42 is provided.

When an object to be conveyed hits the detection roller 43 of the position detection mechanism configured as described above, the detection roller 43
As the object moves while rotating, the transported object passes through the detection roller 43 more smoothly, and the detector 3
When the support frame 40 hits the support frame 2, the transported object can be detected more reliably.

As described above, the present invention having the above-mentioned configuration has the following effects.

The warehouse can be widely used because there is no need for a temporary storage space for the transported objects.

Since there is no need for a large loading / unloading entrance for trucks and the like, and the doors do not have to be opened for a long time, it is possible to minimize the outflow of air in the warehouse and the inflow of air into the warehouse. It is possible to maintain a good storage environment in the warehouse.

In the case of a warehouse where the temperature or humidity inside the warehouse is adjusted, energy can be saved.

Since the work inside the warehouse is not required when loading and unloading the transported object, it is possible to avoid severe work inside the warehouse in the case of a frozen or high temperature warehouse.

By appropriately adjusting the braking force by the spring force of the position detection mechanism, the transported object can be stopped accurately without touching the door immediately before the door. By shortening the moving distance and increasing the transport speed, it is possible to shorten the loading / unloading entrance passage time of the transported object and shorten the door opening time.

Since the drive transmission mechanism is inserted into the through hole having a limited cross-sectional area, it is possible to suppress the inflow / outflow of air from this portion.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention.
1 is a cross-sectional view for explaining the position detection mechanism, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is a configuration diagram of a loading / unloading device, and FIG. 4 is a plan view thereof. FIG. 5 is a sectional view of the rollers of the roller conveyor, FIG. 6 is a side view of the drive transmitting means, and FIG. 7 is a sectional view showing another position detecting mechanism. DESCRIPTION OF SYMBOLS 1 ... Carrying-in / out port, 2 ... Door 9 ... Roller, 20 ... Through hole 23 ... Drive transmission means, 29 ... Detection actuating body 31 ... Spring (elastic member) 32 ... Limit switch (switch means) 33 ... Sequence control mechanism 34 ... Grip Device 35 ... Upper limit detector (transportation detector) 36 ... Fully open detector, 43 ... Detection roller 44 ... Detection actuating body, A ... Warehouse C1, C2 ... Roller conveyor (transportation mechanism) D ... Drum can (transported object) M1 ... Motor (driving means) M3 ... Motor (opening / closing means) PD2, PD3, PD4, PD5 ... Position detection mechanism

Claims (2)

[Claims] 1. A loading / unloading port (1) of a warehouse (A),
A door (2) which is operated by the opening / closing means (M3) to open and close the loading / unloading port (1), and a first transfer mechanism (one end of which is disposed in the loading / unloading port (1) and which is provided in the warehouse (A) ( C1) and a second transfer mechanism (C2) provided outside the warehouse (A) with one end located at the carry-in / out port (1) and the transfer direction being aligned with the transfer direction of the first transfer mechanism (C1). And a through hole (2) penetrating the inside and the outside of the warehouse (A).
Drive transmission means (2) which is provided by being inserted through the first transfer mechanism (C1) and the second transfer mechanism (C2).
3), drive means (M1) for driving the first and second transport mechanisms (C1, C2), a gripping device (34) provided in the warehouse (A), and a sequence control mechanism (33) And the second control mechanism (C2), which is disposed on the one end side and detects the transferred object (D) which is transferred by the second transfer mechanism (C2) during the warehousing operation, and outputs a detection signal to the sequence control mechanism ( 33) and outputs to the first and second transport mechanisms (C1, C
2) The first position detection mechanism (PD3) that opens the door (2) by actuating the opening / closing means (M3) while stopping the door, and the detection signal when the door (2) is fully opened is detected. Output to the control mechanism (33) to stop the door (2) while stopping the first and second transport mechanisms (C1, C1).
A full-open detector (36) for activating C2) and an object to be transported (D) which is disposed on the one end side of the first transport mechanism (C1) and is transported by the first transport mechanism (C1) during the unloading operation. And outputs a detection signal to the sequence control mechanism (33) to detect the first and second transport mechanisms (C1, C).
2) The second position detection mechanism (PD4) for stopping the door (2) while opening the door (2) and the other end side of the first transport mechanism (C1) are arranged by the first transport mechanism (C1) during the storage operation. The conveyed object (D) to be conveyed is detected, and a detection signal is output to the sequence control mechanism (33), so that the first and second conveying mechanisms (C1, C).
2) is stopped, while the opening / closing means (M3) is operated for a predetermined time to close the door (2) and the gripping device (34) is operated to transfer the object (D) detected above to the first transfer mechanism ( C1) is transported to another position, and the gripping device (34) detects that the object to be transported (D) has been transported onto the first transport mechanism (C1) during the shipping operation, and the detection signal is subjected to the sequence control. A third position detection mechanism (PD5) that outputs the signal to the mechanism (33) and separates the gripping device (34) from the transported object (D) transported on the first transport mechanism (C1); Object to be transferred (D) on the transfer mechanism (C1)
The sequence control mechanism (33) detects that the gripping device (34) grips the device and conveys it to a predetermined position.
To the first and second transport mechanisms (C1, C
2) warehousing operation is carried out, and the object (D) is carried on the first carrying mechanism (C1) and the gripping device (34) separating the object (D) has reached a predetermined position. Then, the detection signal is output to the sequence control mechanism (33), and the transport detector (35) for activating the stopped first and second transport mechanisms (C1, C2) to move out, and the second transport mechanism (C2). Is disposed on the other end side of the door and detects the transported object (D) transported by the second transport mechanism (C2) at the time of the shipping operation, outputs a detection signal to the sequence control mechanism (33), and outputs the door (2 ) Is closed, and at least one of the first transport mechanism (C1) and the second transport mechanism (C2) is a roller conveyor, and the transport mechanism is a roller conveyor ( C1, C2) a position detection mechanism ( D4 and PD3) are a detection operating body (44) and a detection operating body (44) which are arranged vertically along the roller (9) constituting the roller conveyor and apart from the roller (9). An elastic member (31) that urges the roller (9) to project slightly upward from the transport surface of the roller (9), and a detection operation body (44) by the transported object (D) transported by the roller conveyor.
And a switch means (32) for detecting the descent of the storage device. 2. The loading / unloading device according to claim 1, wherein the detection actuating member (44) is composed of a rotatable roller.