JPH07125847A - Tier stacking and unstacking device - Google Patents

Abstract

PURPOSE:To stack and unstack tiers inexpensively and quickly by collecting a large quantity of trays in a small volume, and stacking and unstacking the tiers by devices having the same simple structures. CONSTITUTION:A tier stacking and unstacking device is equipped with a tray raising/lowering device 7, etc., installed in the lower part of a conveyor 1, tray supporting member 23 installed over the conveyor 1, tray raising/lowering device 10 which raises and lowers the tray raising/lowering member 7, etc., at a conveyor supporting position and a tray supporting member supporting position, and a tray supporting member driving device 25 which drives the tray supporting member 23 at the lower position of the tray at the tray supporting member supporting position and the position deflecting from this lower position, interlocked with the tray raising/lowering member 7, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacking and stacking device for stacking and transporting trays for inserting and transporting bobbins and packages and stacking and transporting the trays.

[0002]

2. Description of the Related Art In spinning, winder, weaving factories, etc., it is necessary to convey a bobbin wound around a yarn or a package by a conveyer to each step in order, and at that time, the through hole in the center of the bobbin is required. , The tray is placed upright in a peg standing in the center of the tray, and the tray is conveyed by a conveyor.

When transporting bobbins and packages, the trays are placed and transported one by one on a conveyor, and after transporting the bobbins and packages to a desired location, an empty bobbin is inserted and returned again. Return to the original position on the conveyor line for use, pull out the empty bobbin, insert the actual bobbin and the actual package, and repeat the same operation, while the number of trays required on this conveyor line is The trays that cannot be absorbed on the conveyor line are stacked and stored in a warehouse or the like from the conveyor line because the number of trays cannot be absorbed on the conveyor line. When the number of packages increases, it is necessary to disassemble the stacking trays stored in the warehouse and convey them to the conveyor line.

[0004]

The above-mentioned conventional stacking and unstacking device is for grasping the tray from above and stacking or unstacking the trays. The stacking work and the unstacking work are performed in stacking. Limited by the number of trays. In addition, since a large volume is used for the amount of trays to be transported and the volume is bulky, a warehouse that temporarily complements the pallet has a drawback that it requires a large space.

Therefore, according to the present invention, a large number of trays can be put together in a small volume without being limited by the number of trays for stacking, and stacking and disassembling can be performed by an apparatus having the same simple structure, which is inexpensive. Moreover, it is an object of the present invention to provide a stacking / separating device capable of stacking and disassembling quickly.

[0006]

In order to solve the above problems, the present invention provides a tray elevating member provided at the bottom of a conveyor,
A tray supporting member provided above the conveyor, a tray elevating device for elevating the tray elevating member to a conveyor supporting position and a tray supporting member supporting position, and a tray at a tray supporting member supporting position interlocking with the tray elevating member. The stacking and disassembling device is configured by providing a tray supporting member driving device that drives the tray supporting member at a lower position and a position deviated from the position.

[0007]

Since the present invention is constructed as described above, when stacking trays, the tray elevating device is operated to raise the tray elevating member to the conveyor supporting position so that the trays conveyed by the conveyor can be moved to a predetermined position. Then, the tray is lifted to push up the tray supported by the tray supporting member, and at this time, the tray supporting member driving device is driven to drive the tray supporting member from the tray supporting position to the tray supporting releasing position, Next, the tray elevating device raises the tray to the tray supporting position by the tray supporting member, and at this position, the tray supporting member is driven to support the tray, and then the tray elevating device is lowered to the original position. The operation is repeated to stack a predetermined amount of trays.

When the trays stacked in this manner are unstacked, the tray elevating device is raised to bring the tray holding portion into contact with the bottom bottom surface of the tray, and then the support by the tray support member is released. Then, when the tray elevating device lowers one tray, the tray supporting member is driven to support the bottom of the second tray from the bottom, and the tray elevating device is lowered to place the tray on the roller conveyor. Further, the tray elevating device is lowered, the operation of the stopper is released, and the tray is conveyed by the roller conveyor. After that, the same operation is repeated to disassemble all the trays supported by the tray supporting device.

[0009]

Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the tray 2 conveyed by the roller conveyor 1 has a bobbin mounting table 4 protruding from the center of a square base 3 and a peg 5 protruding therefrom. The bobbin is conveyed by inserting the central hole of the bobbin into the bobbin and placing the open end of the bobbin on the bobbin mounting table 4. An engagement groove 6 is formed on the outer peripheral side surface of the base of the tray 2, and the engagement groove 6 is open on the bottom surface side and the side surface side of the base.

The tray 2 is made of synthetic resin, and has a concave portion formed on the bottom surface side corresponding to the shape of the upper side. Therefore, when another tray is placed on the upper part of the tray 2, the peg 5 of the lower tray is placed on top of the upper tray 2.
Enter the inside of the upper tray from the bottom side of the tray, and the back surface of the bobbin mounting table of the upper tray 2 is mounted on the upper surface of the bobbin mounting table of the lower tray. It can be placed on.

Below the roller conveyor 1, there is provided a tray elevating device 10 having two holding arms 7 and 8 arranged in parallel so as to be able to move forward and backward from a gap between adjacent rollers. Of the two holding arms 7 and 8, the upper end of the holding arm 7 on the downstream side of the roller conveyor 1 engages with the engaging groove 6 of the tray 2 and holds the tray 2 conveyed by the roller conveyor 1. A stopper 11 that stops at a predetermined position is provided, and a tray holding portion 9 that comes into contact with the bottom surface of the tray 2 is provided below the stopper 11.

The lower ends of both holding arms 7 and 8 are connected and integrated by a connecting plate 12 to form a connecting plate 1.
At the central portion of 2, a ball nut 14 that is screwed with a ball screw rod 13 that is rotatably supported between the holding arms 7 and 8 is fixed. The upper and lower portions of the ball screw rod 13 are rotatably supported by bearings 15 and 16, and are driven by a motor 20 via a belt 18 wound around pulleys 17 and 17 provided at the lower ends thereof. To be rotated. The motor 20 can be switched between normal and reverse rotations, and when the ball screw rod 13 is rotated during normal rotation, the ball nut 14 rises along the ball screw rod 13 and, as a result, both holding arms 7 and 8 rise. When the motor 20 rotates in the reverse direction, the ball screw rod 13 rotates in the reverse direction so that the holding arms 7 and 8 descend.

A protrusion 21 is provided so as to project from the fixed portion between the ball nut 14 and the connecting plate 12, and the protrusion 21 moves up and down in a straight line as the holding arms 7 and 8 move up and down. On the up-and-down line of the protrusion 21, the protrusion 21
The four position sensors 22-1 to 22-4 in FIGS. 1 and 2 are fixed to the frame 19 at positions where they can approach each other. The position sensor is installed at the lowermost position sensor 22.
-1 is the height at which the stopper 11 of the holding arm 7 is retracted from the upper surface of the roller conveyor 1 when the protrusion 21 is at the height of the position sensor 22-1. The position sensor 22-2 above it has the protrusion 21
At a height of -2, the stopper 11 of the holding arm 7 projects from the upper surface of the roller conveyor 1 by a predetermined amount,
The upper side is the locking groove 6 of the tray 2 which is conveyed in the direction of the arrow in FIG.
The height is set to stop inside and stop the tray. As shown in FIG. 3, the position sensor 22-3 located above the load sensor 22-3 holds the tray with the holding arms 7 and 8 when the tray is loaded above the held tray. The bottom surface of the tray 2 that is formed is slightly higher than the height that can be supported by the support arm 23 of the tray support device described later, and the tray 6 that is supported by the support arm 23 of the tray support device.
Is the position to push up. Top position sensor 22-
As shown in FIG. 4, when the tray 4 is supported by the support arm 23 of the tray support device described later, the bottom 4 of the tray 6 that is pushed up from below is slightly higher than the support arm 23.

A support arm 23 for supporting the bottom of the tray 2 is swingably provided on the upper portion of the roller conveyor 1 so that the tray 2 can be stacked on the tray, and the support arms 23 can be positioned on both sides of the tray. The supporting arms 23 are connected by a connecting rod 24, and one supporting arm can be driven by a motor 25. When the motor 25 rotates in the forward direction, the support arm 23 projects in the tray direction to support the tray, and when the motor 25 rotates in the reverse direction, the support arm 2
3 swings about 60 degrees, and the tip of the support arm 23 comes to a position where the support of the tray is released.

The operation when the above device is used for stacking trays will be described as a control operation of the control device 26. First, the stopper 11 of the holding arm 7 of the tray elevating device 10 will be described.
, When the protrusion 21 is at the height of the position sensor 22-1,
When the tray 2 is conveyed on the roller conveyor 1, the control device 26 outputs a normal rotation signal to the motor 20 to cause the motor 2 to move.
Drive 0. As a result, the ball screw rod 13 rotates, the ball nut 14 that is screwed with the ball screw rod 13 rises, and as shown in FIG. 2, when the protrusion 21 rises to the position of the position sensor 22-2, The output causes the controller 26 to stop driving the motor 20. At this time, the stopper 11 at the tip of the holding arm 7 projects from the gap between the adjacent rollers of the roller conveyor 1 and projects from the surface of the roller conveyor 1.

The tray conveyed on the roller conveyor 1 is stopped at a predetermined position by the engagement of the stopper 11 in the engaging groove 6, and when this is detected by an optical sensor (not shown) or the like, the controller 26 Causes the motor 20 to rotate in the normal direction again to raise both holding arms 7 and 8. As shown in FIG. 3, when the protrusion 21 approaches the position sensor 22-3, the output of the position sensor 22-3 causes the control device 26 to move to the motor 2.
Stop 0. During this time, the tray stopped at a predetermined position on the roller conveyor 1 is held at the bottom by the holding portions 9 at the ends of both holding arms 7 and 8 and ascends, pushing up the tray stacked above and lowering the tray. Is slightly separated from the support arm 23 and stopped.

At the time of this stop, the peg 5 of the tray that has risen comes in from the bottom side of the tray supported by the support arm 23, and the upper end of the bobbin mounting table 4 of the tray that rises is supported by the support arm 23. The tray is brought into contact with the back surface of the bobbin mounting table 4. At the same time, the control device 26 reverses the motor 25 to bring the support arm 23 into the support release state. At this time, all of the trays supported by the support arm are placed on the upper surface of the tray that has risen. Further, the control device 26 causes the motor 20 to rotate in the normal direction so that both holding arms 7, 8 are
When the protrusion 21 approaches the uppermost position sensor 22-4 as shown in FIG. 4, the drive of the motor 20 is stopped by the output of the position sensor 22-4.

At this time, the bottom surface of the raised lowermost tray is at a position slightly higher than the support arm 23, and the controller 26 causes the motor 25 to rotate forward at the same time so that the support arm 23 projects to the tray support position. The trays stacked and stacked are all supported by the support arm 23. Next, the control device 26 reverses the motor 20, lowers both holding arms 7 and 8, and the protrusion 21 is at the bottom position sensor 22.
-1 When approaching, the motor 20 is stopped by the signal of the position sensor 22-1.

After that, by repeating the same operation,
Arbitrary number of trays are stacked on the support arm 23,
When the predetermined number of stacks is reached, a well-known ceiling transport vehicle (not shown) supports and lifts the lower part of the lowermost tray,
Transport it to a predetermined location such as a warehouse.

On the other hand, when trays are conveyed from the warehouse or the like to the roller conveyor 1 and are sequentially transferred and unstacked, it is possible to perform an operation substantially opposite to the above stacking operation. That is, trays stacked from a warehouse or the like on a ceiling carrier are placed on the support arm 23, and the holding arms 7 and 8 are connected to the position sensor 22.
-4, hold the stacked trays by raising them to the uppermost position, pull the support arm 23 to the support release position, lower the holding arm 23 one position to the position of the position sensor 22-3, and rotate the support arm 23. It moves to the supporting position again, and at that time, the bottom surface of the second tray from the bottom is supported by the supporting arm 23, and the holding arm 23 lowers only the lowermost tray while lowering this tray onto the roller conveyor 1. It is placed, the holding arm is lowered to the lowest stage to release the stopper, and this tray is conveyed by the roller conveyor. At the time of the above operation, the position sensor 22 is the same as at the time of the stacking operation.
This is performed by the control device 26 rotating the motors 20 and 25 forward and backward based on the signal.

In the above apparatus, an example in which stacked trays are carried out from a warehouse or the like by a ceiling carrier or into a warehouse is shown. However, trays stacked and supported by a support arm are shown. It can be held on a holding arm, lowered as it is, placed on a roller conveyor, carried out from this position by this conveyor, and conveyed to a warehouse by a branch conveyor line, and similarly stacked from the warehouse. When carrying in the tray, transfer it on this roller conveyor line by the conveyor line,
It is also possible to stop at a predetermined position by the operation of the stopper and raise the whole of the stacked trays so that they are supported by the support arm.

[0022]

Since the present invention is constructed and operates as described above, stacking and destacking work can be performed by the same apparatus, the structure is simple, the working speed is fast, and trays are Since they are stacked on top of each other, the capacity of a large number of trays can be reduced, and the transport device, warehouse, etc. can be downsized.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the same.

FIG. 3 is a perspective view showing a position sensor 22-having a protrusion 21 according to an embodiment of the present invention.
3 is a cross-sectional view of a position close to 3.

FIG. 4 is a perspective view showing a position sensor 22-of the protrusion 21 according to the embodiment of the present invention.
4 is a cross-sectional view of a position close to 4.

[Explanation of symbols]

 1 Roller Conveyor 2 Tray 3 Base 4 Bobbin Placement Table 5 Peg 6 Engagement Groove 7 Holding Arm 8 Holding Arm 9 Holding Part 10 Tray Lifting Device 11 Stopper 12 Connecting Plate 13 Ball Screw Rod 14 Ball 18 Belt 20 Motor 21 Protrusion 22 Position Sensor 23 Support arm 24 Connecting rod 25 Motor 26 Control device

Claims (1)

[Claims] 1. A tray elevating member provided at a lower portion of a conveyor, a tray supporting member provided above a conveyor, a tray elevating device for elevating a tray elevating member between a conveyor supporting position and a tray supporting member supporting position, and a tray. A stacking and destacking device, comprising: a tray support member driving device that drives a tray support member at a lower position of a tray at a tray support member supporting position and a position deviating from the position in association with an elevating member.