JPH0730595Y2 - Stack de-stack device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stack destack device for stacking or unloading styrofoam boxes conveyed by a roller conveyor device one by one.

[0002]

2. Description of the Related Art For example, a styrofoam box must be manufactured in a molding die and stored in a warehouse or the like until it is carried out by a truck or the like. At that time, in order to effectively use the space for the stock, styrofoam boxes must be stacked and placed. Conventionally, a worker has piled up the boxes conveyed by a roller conveyer device one by one. Further, when the boxes that have been stacked once are to be carried out of the warehouse or the boxes are to be used, the loading and unloading work must be performed. In the past, this work was also carried out by a worker and carried by, for example, a roller conveyor device.

[0003]

However, it is extremely inefficient to manually stack or unload the boxes as in the prior art, and it has not been possible to stack the boxes sufficiently high. Furthermore, it was troublesome to unload the boxes that had been stacked high one by one. Such problems existed not only in styrofoam boxes, but also in relatively light weight paper boxes, wooden boxes, and other boxes (these are collectively referred to as boxes in this specification). .

The present invention has been made to solve the above problems, and it is possible to automatically stack or unload boxes one by one. An object is to provide a stack destack device.

[0005]

This invention was made in order to achieve the above object, and in many cases, projections such as handles are provided on both side surfaces of the box body. Two arms supporting the box body from the side are provided, and the two arms are box-moved to be stacked or unloaded.

That is, a roller conveyor device for loading and unloading the box, a sensor for detecting loading and unloading, and two arms for supporting the box from below the protrusions provided on both side surfaces of the box, A forward / backward device for moving the arm forward and backward toward the box, a vertical slider provided with the arm and the forward / backward device and capable of moving up and down, a vertical drive device for vertically moving the vertical slider with respect to the device frame, and provision of an arm Guide bar that guides the box up and down at a certain position, and controls the forward and backward movement device and vertical drive device by receiving the detection signal from the sensor to stack or unload the next box under the box It is characterized in that it is provided with a control device for box-moving the arm.

[0007]

When the first one of the boxes is carried in by the roller conveyor device, the sensor detects the carry-in and the arm advances from the upper and lower sliders at the lower limit position. When the upper and lower sliders move up, the arms support the protrusions of the box body from below, and further move up to lift the box body. The upper and lower sliders stop at the upper limit position. Then, when the sensor detects that the next box is carried in, the up and down sliders descend, and the box that has been lifted is placed on the next box. After that, the arm retreats, and the upper and lower sliders further descend to the lower limit position. Then, as before, the arm advances again to support and lift the next box. The arm repeats such a box motion to stack the box bodies one by one.

When loading and unloading boxes one by one, the preceding box movement is performed in the opposite direction. At this time, the roller conveyor device also conveys in the opposite direction.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. An embodiment of the present invention will be described below with reference to FIGS. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a view of FIG.
III-III sectional view, FIG. 4 is a perspective view for explaining the operation.

In this embodiment, the box is a styrofoam box 1. This box 1 has steps 3 formed on both sides (FIG. 4). The upper side of the step 3 projects laterally, and a downwardly-handled handle 5 is provided at the center of the step 3.
The step 3 functions as a protrusion for supporting the arm 7 described later. As shown in FIG. 1, at the tip of an arm 7 that supports the protrusion from below, a step 3 that forms the protrusion and a claw 9 that fits in the shape of a handle 5 formed on the step 3 are formed. There is. Two such arms 7 are provided (FIG. 4) so that the box 1 can be supported on both sides. The arm 7 is slidable in the horizontal direction by a horizontal rail 13 provided horizontally on the upper and lower sliders 11 so that it can move forward and backward toward the box 1. This forward / backward movement is performed by fixing the tip of the piston rod 17 of the air cylinder 15 provided on the upper and lower sliders 11 to the arm 7. These air cylinder 15 and lateral rail 13
A forward / backward device is constituted by the above.

The vertical slider 11 is slidable along a vertical rail 21 provided on the apparatus frame 19 so as to be vertically movable. A crank rod 23 is pin-connected to the upper and lower sliders 11, and a crank arm 25, which is further pin-connected to the crank rod 23, rotates around a crank shaft 27, and this rotation is performed via a belt 29 to a motor with a brake. Performed by 30. The rotation angle of the crankshaft is detected by the detector 31. The crank mechanism such as the crank rod 23 and the motor 30 constitute a vertical drive device.

A sensor 35 is provided to detect whether or not the box 1 conveyed by the roller conveyor device 33 has been loaded to the position where the arm 7 is provided. This arm 7
At the position where is provided, the guide bar 37
Is extended. The guide bar 37 is for guiding the stacked boxes 1 so that they do not sway.
A sensor 39 for detecting that the boxes 1 are stacked to the limit is provided on the upper end of the guide bar 37. Further, in order to accurately stop the box 1 at the position where the arm 7 is provided, the stopper 41 is provided with a roller conveyor device 33.
It is provided so that it can move up and down between the rollers 43.

The stacking or unloading of the boxes 1 performed by the controller will be described below based on the configuration of this embodiment. (1) The first one of the boxes 1 is loaded by the roller conveyor device 33 and stopped by the stopper 41, and the sensor 35 detects this loading. (2) Up / down slider 11 that was at the lower limit position until then
The air cylinder 15 operates according to the control signal from the control device which receives the detection signal of the sensor 35, and moves the arm 7 forward (a in FIG. 4).

(3) After that, the motor 30 is rotated by the control signal from the control device, the crank mechanism is activated, and the vertical slider 11 is raised (b in FIG. 4). By this rise, the claws 9 at the tip of the arm 7 are locked to both sides of the handle 5 of the box 1 to support the protrusion. (4) When the vertical slider 11 continues to move upward, the box 1 is lifted (b in FIG. 4).

(5) The detector 31 detects the vertical position of the vertical slider 11. (6) By this detection signal, the control device stops the motor 30 and stops the vertical slider 11. (7) The next box 1 is carried in with the upper and lower sliders 11 thus stopped. Similarly, the box 1 is also stopped by the stopper 41, and the carry-in is detected by the sensor 35.

(8) The control device receives the detection signal and the motor 30
Is further rotated in the same direction, the vertical slider 11 is lowered, and the box 1 is stacked on the next box 1 (c in FIG. 4). (9) Further, the upper and lower sliders 11 continue to descend, and the support for the protrusion is removed (c in FIG. 4). (10) After that, the arm 7 retracts (d in FIG. 4).

(11) The vertical slider 11 continues to descend (see FIG.
E) When it reaches the lower limit position, detection is performed by the detector 31. (12) In response to this detection signal, the control device stops the motor 30 and stops the vertical slider 11. (13) Repeat (2) to (12) above, and place the next box 1 under the box 1.
Are stacked along the guide bar 37.

(14) Sensor 3 provided on the guide bar 37
When 9 detects the limit of stacking, the control device determines that the motor 3
0 to stop the box movement of the arm 7 and stop the stopper 4
1 is lowered and released, and the stacked boxes 1 are unloaded by the roller conveyor device 33. In the stacking operation of stacking the boxes in this manner, the arm 7 is moved to the position shown in FIG.
Perform a box motion indicated by bcd. On the other hand, in the destacking operation in which the boxes 1 are unloaded one by one from the stacked state, the box motion is performed in the opposite direction. That is, the outline is as follows: (1) The roller conveyor device 3 with the boxes 1 stacked.
3 is carried in from the opposite direction, stopped by the destacking stopper, and this carrying in is detected by the sensor.

(2) The upper and lower sliders 11 at the lower limit position ascend, stop slightly below the upper limit position, and (3) move the arm 7 forward. (4) The vertical slider 11 is raised to support the protrusion of the box 1 placed on the bottom box 1. (5) Raise to the upper limit position and lift this box 1.

(6) In this state, the lowermost box 1 is carried out by the roller conveyor device 33. (7) When the vertical slider 11 is lowered and reaches the lower limit position, the arm 7 is located below the protrusion of the box 1 and the arm 7 is retracted. (8) The motor continues to rotate in the same direction, and the vertical slider 11 turns upward. (9) The arm 7 moves forward a little below the upper and lower sliders 11 reaching the upper limit position.

By repeating the above operations (2) to (9), the stacked boxes 1 can be carried out one by one from the lower box 1. In the above embodiment, the arm 7
Although the forward and backward movements of the arm 7 are described as being performed while the vertical slider 11 is stopped, in other embodiments, the forward and backward movements of the vertical slider 11 are sufficiently slow, or the forward and backward movement of the arm 7 is sufficiently quick. If this is done, it is possible to move the arm 7 forward and backward while moving the vertical slider 11 without stopping it.

In the above embodiments, the upper and lower positions of the upper and lower sliders 11 have been described as being in agreement with the vertical dimension of the box, but in other embodiments, the box 1
It is also possible to have a convex movement rather than a complete box movement (FIGS. 4a-e) for smaller vertical dimensions.
That is, with the arm 7 retracted, the vertical slider 11
It is possible to cope with the small-sized box 1 without changing the radius of the crank arm 25 by ascending and descending.

[0023]

As described above, according to the stack destacking apparatus of the present invention, it is possible to automatically stack or unload the boxes one by one by the box movement of the arm. Become. Therefore, compared to the conventional manual work, the boxes can be stacked higher, and even the boxes that have been stacked can be easily loaded and unloaded, providing a space for stocking boxes in a warehouse or the like. It can be used effectively and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a perspective view showing the operation of the apparatus of this embodiment.

[Explanation of symbols]

 1 Styrofoam Box (Box) 7 Arm 11 Vertical Slider 15 Air Cylinder (Advancing / Retracting Device) 30 Motor 31 Detector 33 Roller Conveyor Device 35 Sensor 37 Guide Bar

Claims (1)

[Scope of utility model registration request] 1. A roller conveyor device for loading and unloading a box, a sensor for detecting loading and unloading, and two arms for supporting the box from below the protrusions provided on both side surfaces of the box.
A forward / backward device for moving the arm forward and backward toward the box, an up / down slider provided with the arm and the forward / backward device so as to be vertically movable, a vertical drive device for vertically moving the vertical slider with respect to the device frame, and a box body. A guide bar that guides in the vertical direction and the next box body under the box body are piled up or stacked to receive a detection signal from a sensor and control the forward / backward device and the vertical drive device to move the arm into a box. A stack destack device, which is equipped with a control device.