JP6871617B2 - Storage device - Google Patents

Description

The present invention relates to a storage device for temporarily storing a product sent from a transfer device such as a conveyor or a chute.

A so-called level cart type storage device is known for temporary storage of products sent from a transfer device such as a conveyor or a chute (Non-Patent Document 1). The level cart type storage device is equipped with a spring-type work table in order to maintain the height of the work surface just right for work, and is used for the purpose of storing products sent from chutes, conveyors, etc. A storage container is installed on the work table. The spring contracts according to the weight of the product in the product storage container installed on the work table, and when the product is taken out, it becomes lighter by that amount. It is possible to prevent the height of the product from changing so much, and the worker can perform the work without being forced into an unreasonable posture.
Further, refer to Patent Document 1 and Patent Document 2 for the meshing chain type linear drive type actuator adopted in the embodiment of the present invention.

"Level cart" trolley with work table, product information, official website, Daifuku Co., Ltd., [online], [October 3, 2017 search special], Internet

JP 2013-184763 JP 2013-57389

When the level cart type work trolley is used for the purpose of storing products, the products are taken out one after another regardless of the amount of products transported, that is, even when the products are received one after another from the conveyor. In this case as well, there is an advantage that the height of the work surface can be maintained substantially constant by the action of the spring, but the structure is such that the product to be transported is simply received by the storage container, and the product is loaded into the storage container in an orderly manner. There was a problem that the work efficiency was not good because it was filled up quickly because it was not devised.
In view of the problems of the level cart type work cart, it is an object of the present invention to ensure high filling efficiency of stored items while maintaining the possibility of controlling the work height.

The storage device of the present invention
Support stand,
Cylindrical body fixed on the support base,
A bottom plate, which is rotatably arranged relative to the tubular body and forms a storage space for the product with the tubular body,
A support plate that is placed close to the bottom plate on the support base side and on which the bottom plate is rotatably placed.
By rotating the main body fixed to the support base side of the support plate, the rotary drive shaft extending parallel to the bottom plate from the main body, and the rotary drive shaft, the rotation angle is maintained in a rigid state according to the rotation direction. A linear drive actuator, the length of which changes according to the above, and the main body and the telescopic body whose separated end is fixed to the support base side.
It is equipped with a rotation shaft that is attached to the support base side of the support plate and is rotationally connected to the rotation drive shaft of the linear drive type actuator, and the length of the telescopic body is changed according to the rotation direction of the rotation shaft, and the support plate and above it. The prime mover that raises and lowers the bottom plate of
A friction rotating plate that is rotatably supported on the support base side of the support plate, has a rotating shaft parallel to the bottom plate, and drives the rotation of the bottom plate by frictionally engaging with the facing surface of the bottom plate at the outer peripheral edge.
A one-way clutch that connects the rotary drive shaft of the prime mover and the rotary shaft of the friction rotary plate and transmits the rotation of the rotary shaft of the prime mover to the friction rotary plate only in one direction corresponding to the downward movement of the bottom plate toward the support base.
Consists of. The linear drive actuator can be configured as a linear drive actuator of a type in which two chains in which a plurality of chain pieces are connected mesh with each other to form a rigid telescopic body.

A first sensor for detecting the introduction of a product into the accommodation space, and a prime mover to shorten the stretchable body until a predetermined time elapses from the detection of the introduction of the product into the accommodation space by the first sensor. It is provided with a timer for detecting the shaft time, a second sensor for detecting the position of the upper surface of the product accommodated in the accommodation space, and a drive control means for the prime mover, and the drive control means is moved to the accommodation space by the first sensor. The bottom plate is lowered and rotated in cooperation with the one-way clutch for a predetermined elapsed time from the detection of the introduction of the product, and then the upper surface of the product in the accommodation space by the second detection means is idled while the one-way clutch is idled. The drive control of the prime mover is performed to raise the bottom plate until the position is detected.

When the storage device of the present invention is operated, the introduction of the product into the accommodation space is detected, and the linear drive type actuator is driven by the prime mover in order to shorten the telescopic body for a predetermined time by detecting the introduction of the product into the accommodation space, thereby driving the bottom plate. At the same time, the bottom plate is rotated by a rotation drive of the friction rotating plate via the one-way clutch, and thereafter, it is stored by repeating this operation every time the introduction of the product is detected in the accommodation space. Achieves the stacking-like operation of products in the space, while detecting the predetermined height position of the products stored in the accommodation space, and if the predetermined height position is insufficient, the prime mover is used to extend the stretchable body. By driving the linear drive type actuator, the friction rotating plate bottom plate is raised while idling by the one-way clutch so that the predetermined height position of the product stored in the accommodation space is always maintained.

In the storage device of the present invention, when the product is introduced, the bottom plate is lowered while rotating, so that the product can be stored evenly and in a stack on the bottom surface of the product in the circumferential direction, and high storage efficiency of the product can be obtained. Can be done.

By using a linear drive type actuator that expands and contracts the vertical movement of the bottom plate by the rotation of the rotating shaft, the prime mover for rotating the rotating shaft can also be used as the rotational driving source of the friction rotating plate, and the bottom plate is efficient. It is possible to move up and down and rotate.

In addition, since the bottom plate is raised without the rotation of the bottom plate, it is possible to prepare for receiving the next product at an appropriate height position while keeping the position of the already stored product in the rotation direction, and the efficiency of the product. Containment is possible.

Further, by detecting the height of the product on the bottom plate to raise the bottom plate, the height position of the product in the storage device can be secured, and a comfortable working environment can be provided to the worker who handles the product. Can be provided.

FIG. 1 is a schematic perspective view showing the entire accommodating device 10 of the present invention. FIG. 2 is a cross-sectional view of the bottom plate and the support plate shown along the outline II-II of FIG. FIG. 3 is a cross-sectional view of the friction rotating plate shown along the line III-III of FIG. FIG. 4 is an overall schematic view of a control device using a microcomputer. FIG. 5 is a flowchart illustrating an operation for storing a component storage bag in the storage device of the present invention. FIG. 6 is a flowchart illustrating an operation for discharging the component storage bag in the storage device of the present invention. .. FIG. 7 is a schematic vertical cross-sectional view of the accommodating device of the present invention, showing the start of the component accommodating bag on the bottom plate. FIG. 8 is a schematic plan view of the accommodating device of the present invention, showing a state in which component accommodating bags are arranged side by side in the circumferential direction on the bottom plate. FIG. 9 is a schematic vertical cross-sectional view of the accommodating device of the present invention, showing a state in which the accommodating of the component accommodating bags on the bottom plate is completed.

FIG. 1 shows a level cart type storage device 10 of the present invention. In this embodiment, the storage device 10 is a parts storage bag 12 for assembling a wire harness as a product conveyed from a conveyor or a chute 11 in a parts manufacturing factory for an automobile wire harness (the product of the present invention). It was installed to temporarily accommodate the. For shipping from the factory, the worker takes out the parts storage bag 12 from the storage device 10 and refills it in a cardboard box. Then, in order to improve the workability at this time, the storage device 10 is devised so that the upper surface position of the product housed therein can be made substantially constant, as will be described later.

The storage device 10 can rotate relative to the steel plate support base 14, the steel plate outer cylinder 16 (cylindrical body of the present invention) integrally fixed on the support base 14 by welding or the like, and the outer cylinder 16. The bottom plate 18 made of steel plate, which is arranged in the outer cylinder 16 to form an accommodation space S for the product product or the product accommodating body, and is arranged on the support base 14 side (lower side) close to the bottom plate 18 and is arranged on the bottom plate. A steel plate support plate 20 on which 18 is rotatably mounted, a linear drive type actuator 22, an electric motor 24 (motor) for rotationally driving the actuator 22, and a friction rotary plate 26 for rotationally driving the bottom plate 18. And a one-way clutch 28 that transmits the rotation of the rotary drive motor 24 to the friction rotary plate 26 only in one direction corresponding to the downward movement of the bottom plate 18 toward the support base.

The bottom plate 18 has a disk shape, the outer circumference thereof is slightly smaller than the inner circumference of the outer cylinder 16, and the bottom plate 18 is rotatably attached to the support plate 20. Explaining the configuration in which the bottom plate 18 is rotatably attached to the support plate 20, the ball bearing 30 is arranged concentrically with the rotation center of the support plate 20, and the central axis is formed in the center hole 18-1 of the bottom plate 18 as shown in FIG. 32 is fixed by welding or the like. The upper end of the central shaft 32 is flush with the upper surface of the bottom plate 18, while the lower end side of the central shaft 32 is press-fitted into the inner race 30-1 of the bearing 30. The degree of press-fitting is such that the central shaft 32 can idle with respect to the inner race 30-1 against a load exceeding a predetermined value applied to the rotating bottom plate 18 when the product is housed, thereby protecting the storage device from overload. can do. The support plate 20 has a central hole 20-2, and the inner peripheral edge of the central hole 20-2 is located between the inner race 30-1 and the outer race 30-2 of the bearing 30. An annular member 33 is welded and fixed to the upper surface of the support plate 20 at the same core as the center hole 20-2, and the outer race 30-2 of the bearing 30 is press-fitted into the inner peripheral surface of the annular member 33. The height of the bearing 30 and the annular member 33 from the support plate 20 is somewhat less than the distance between the bottom plate 18 and the support plate 20, so that the support plate 18 is rotatably supported by the bearing 30 at the center. A plurality of ball rollers 34 are arranged at equal intervals in the circumferential direction at a portion slightly closer to the outer diameter than the center of the support plate 20, and the ball seats 34-1 (see also FIG. 2) of the ball rollers 34 are placed on the support plate 20. It is fixed by bolts or the like via a spacer 34-2. The ball roller 34 can roll while being in contact with the bottom plate 18 on the upper surface. In this way, the support plate 20 supports the bottom plate 18 with a ball bearing 30 at the center and a ball roller 34 at the outer periphery, so that smooth rotation of the bottom plate 18 on the support plate 20 can be realized. it can.

Next, the linear drive type actuator 22 will be described. The linear drive type actuator 22 has a main body 36 fixed to the bottom surface of the bottom plate 20 and a rotary drive shaft 38 that causes the expansion / contraction body 40 to extend or retract by its rotational movement. A telescopic body that extends or retracts vertically from the main body 36 toward the support base 14 with a stroke amount according to the rotation angle while maintaining a rigid state according to the rotation direction by the rotation drive of the rotation drive shaft 38. 40 and. As the linear drive type actuator 22, a product named Zip Chain Lifter manufactured and sold by Tsubakimoto Chain Co., Ltd. (registered trademark of Tsubakimoto Chain Co., Ltd.) can be adopted. In this case, the telescopic body 40 has a plurality of chain pieces. It is composed of two or a plurality of consecutive chains 40-1, 40-2 meshing with each other. The linear drive type actuator 22 has nothing to do with the main purpose of the present invention, and is shown in schematic drawings (FIGS. 1, 7 and 9) for the sake of simplicity, but the two chains 40 For details such as the mechanism of how -1, 40-2 mesh to form a rigid telescopic body 40, refer to Patent Document 1 and Patent Document 2 if necessary. The specific structure of the linear drive actuator 22 under the trade name of Zip Chain Lifter is that the rotary drive shaft 38 is not exactly the same as that of Patent Document 1 and Patent Document 2, but a rigid telescopic body is formed by meshing the chains. It is the same in the principle of The telescopic body 40 extends so as to be orthogonal to the central axis of the outer cylinder 16 (central axis of the bottom plate 18) and on the diameter of the outer cylinder 16 (diameter of the bottom plate 18). Although the rotation drive shaft 38 is not shown, the rotation drive shaft 38 extends to the inside of the main body 36, and the sprocket 42 is arranged on the extension portion of the rotation drive shaft 38 inside the main body, and the two chains 40-1, 40-2 are When the sprocket 42 is pulled into the main body 36, the sprocket 42 is engaged with one of the chains 40-1 on the back side of the other chain 40-2, and is divided into left and right (chains 40-1, 40-2). Rigidity is lost), and the chains 40-1, 40-2 are inside the main body 36 as the sprocket 42 (rotation drive shaft 38) continues to rotate counterclockwise (arrow a) in the pulling direction into the main body 36. It is accommodated in the chain accommodating groove formed in. In the case of clockwise rotation (arrow b) in the direction opposite to that of the sprocket 42 (rotation drive shaft 38), the two chains 40-1, 40-2 mesh with each other to form a rigid telescopic body 40. However, it will be extended vertically downward. As shown in FIG. 1, the main body 36 of the linear drive actuator 22 is fixed to the lower surface of the support plate 20 by fasteners such as bolts 44. As the fixing method of the main body 36 to the support plate 20, any optimum method can be selected according to the structure of the main body. At the lower end of the telescopic body 40, the chains 40-1 and 40-2 are integrated by the fastening plate 40a in a meshed state, and the end plate 40a is bolted to the support base 14 by the fastening member 45. From the above configuration, the following operation can be understood. That is, the expansion / contraction body 40 is pulled into the main body 36 by the rotation of the sprocket 42 in the counterclockwise direction (arrow a) (the expansion / contraction body 40 is contracted (the length of the expansion / contraction body 40 outside the main body 36 is shortened)). Therefore, the support plate 20 and the bottom plate 18 placed on the support plate 20 are lowered (arrow d). Due to the clockwise rotation of the sprocket 42 (arrow b), the stretchable body 40 is extended from the inside of the main body 36 (the stretchable body 40 is stretched (the length of the stretchable body 40 outside the main body 36 is extended)). The support plate 20 and the bottom plate 18 placed on the support plate 20 are raised (arrow u).

In FIG. 1, the main body of the electric motor 24 is fixed to the lower surface of the support plate 20 by the mounting plate 46. The pulley 48 is fixed on the rotary shaft 24-1 of the electric motor 24, while the pulley 50 is provided on the rotary drive shaft 38 of the linear drive actuator 22, and the pulleys 48 and 50 are connected by the belt 52 and are electrically driven. The rotation of the rotation shaft 24-1 of the motor 24 is transmitted to the sprocket 42 on the rotation drive shaft 38 inside the main body 36 in the same rotation direction (arrow a or b), and the expansion / contraction body 40 is extended (the bottom plate 18 is raised (arrow). u))) or contraction (lowering of the bottom plate 18 (arrow d)) is performed. That is, the length of the telescopic body 40 is shortened by the rotation of the rotating shaft 24-1 of the electric motor 24 in the counterclockwise direction (arrow a), and the support plate 20 and the bottom plate 18 placed on the support plate 20 are lowered ( The length of the telescopic body 40 is extended by the clockwise rotation (arrow b) of the rotating shaft 24-1 of the electric motor 24, which is indicated by the arrow d), and the support plate 20 and the bottom plate 18 placed on the support plate 20 are placed on the support plate 20. Is raised (arrow u).

The rotary drive shaft 38 is a long shaft having a coupling (not shown for simplicity), and its end portion is rotatably supported by a bearing plate 54 fixed to the lower surface of the support plate 20. The well-known one-way clutch 28 is attached to the rotary drive shaft 38, and the one-way clutch 28 is when the rotary shaft 24-1 is rotated counterclockwise (arrow a), that is, when the support plate 20 and the bottom plate 18 are lowered (arrow d). The rotational motion is transmitted to the friction rotating plate 26, but it rotates to the friction rotating plate 26 when the rotating shaft 24-1 rotates clockwise (arrow b), that is, when the support plate 20 and the bottom plate 18 rise (arrow u). It is prevented from transmitting movement. That is, the friction rotating plate 26 can rotate only in the counterclockwise direction (arrow a').

The friction rotating plate 26 has grooves formed at equal intervals in the circumferential direction on the outer peripheral surface, and a friction member 56 made of an elastic material (rubber) is fitted in the grooves. Further, the outer peripheral portion of the friction rotating plate 26 to which the friction member 56 is fitted protrudes and engages with the bottom surface of the bottom plate 20 through the slot-shaped opening 20-1 formed in the support plate 20 during rotation. (See the leftmost portion of FIG. 2 and FIG. 3). As described above, the rotary drive shaft 38 extends parallel to the bottom plate 18, i.e. horizontally and diametrically. Therefore, the counterclockwise rotation (a') of the friction rotating plate 26 is transmitted to the bottom plate 18 by the friction member 56, the bottom plate 18 is rotated clockwise (arrow c) about the vertical axis, and the bottom plate 18 The rotation in the clockwise direction (arrow c) is triggered at the same time as the lowering of the bottom plate 18 (arrow d). On the other hand, the raising of the bottom plate 18 (arrow u) is performed without the rotation of the bottom plate 18 because the one-way clutch 28 does not transmit the rotation.

In the present embodiment, the main body 36 at the upper end of the actuator 22 is fixed to the support plate 20, the fastening plate 40a at the lower end is fixed to the support base 14, in other words, the support plate 20 is fixed to the support 14th by the actuator 22. Is done in the center. A guide roller 58 is provided for stable support of the support plate 20 and the bottom plate 18 mounted on the support plate 20. The guide roller 58 is rotatably supported by an angle plate 60 whose horizontal rotating shaft 58-1 is fixed to the lower surface of the support plate 20 by welding or the like, and the guide roller 58 is lightly supported on the facing inner surface of the outer cylinder 16. Be made to abut. Although only one is shown in the figure, an appropriate number (for example, three) of guide rollers 58 are installed apart from each other in the circumferential direction, and stable ascending / descending movement of the support plate 20 by the actuator 22 can be ensured. As another embodiment of the guiding means for ensuring the stable ascending / descending movement of the support plate 20, two slots are provided at appropriate intervals in the vertical direction of the outer cylinder 16, and two arms extending from the bottom plate 18 are provided. It is configured to be inserted into each slot, and the tubular part (having a slide bearing on the inner circumference) at the end of the arm is inserted into two guide rods fixed upright from the support base 14 outside the outer cylinder 16. It is also possible to.

In FIG. 1, an optical sensor (entry sensor) 62 is provided in the opening of the chute 11 with respect to the upper portion of the outer cylinder 16, and the entry sensor 62 is crossed by a component storage bag 12 sent over the chute 11. It is operated by detecting that it is thrown into the outer cylinder 16. Further, an optical sensor (hereinafter referred to as an upper surface sensor) 64 is installed along the upper edge of the outer cylinder 16. The top surface sensor 64 is provided so as to detect the position of the top surface of the component storage bag 12 that has been loaded onto the bottom plate 18 by being loaded from the chute 11. In the present invention, when the parts storage bag 12 is loaded, the bottom plate 18 is rotated by the parts storage bag 12 for a set time of the timer (a rotation angle corresponding to approximately the width of the parts storage bag 12 on the bottom plate). The amount of descent at this time is set to be considerably larger than the height of the parts storage bag 12 on the bottom plate 18, but the height position of the parts storage bags 12 that are thrown in one after another after the rotation of the bottom plate is positioned by the rise of the bottom plate 18. In order to match, a top sensor 64 is provided to detect this height position. The top surface sensor 64 is configured to include a light receiving surface extending in the circumferential direction in order to detect the height position of the component storage bag 12 on the entire surface of the bottom plate 18. Further, the upper limit sensor 66 and the lower limit sensor 68 of the wall surface support base 20 of the outer cylinder 16 are provided, and the control range is out of the control range for some reason when the position of the component storage bag 12 loaded on the bottom plate 18 is controlled by the control device described later. In that case, an alarm and forced stop can be performed.

The support base 14 is provided with casters 70 at the four corners of the lower surface and handles 72 for pushing, so that the storage device 10 of the present invention can be implemented as a level cart type work cart.

In the storage device 10 of the embodiment of the present invention, the height of the product stored while the parts storage bag 12 from the chute 11 (FIG. 1) is laid on the bottom plate 18 in the circumferential direction and stacked in a stack is the height of the parts storage bag 12. Even at the time of introduction, by controlling the height to a certain level at the time of discharge, it is devised so that the comfortable posture of the worker can be maintained and high workability can be obtained. The control device for such control will be described below. In the present embodiment, the control device relies on the control by the software of the microcomputer. In FIG. 5, it is shown as a microcomputer-type control circuit 74 for controlling the storage device 10, and its system configuration is not shown because it is a general computer for control, but as is well known, the center. Computational device (MPU) and read-only memory (ROM) that stores programs and setting data, random access memory (RAM) that temporarily stores and transfers data for arithmetic processing, and each sensor (entry sensor 62, top surface) A gate for capturing data from the sensor 64, the upper limit sensor 66, the lower limit sensor 68), a gate for a control signal to the rotary motor 24 for raising and lowering the bottom plate 18, and an alarm. It is provided with a lamp for the purpose, a gate for a control signal to the buzzer 25, and the like.

Next, the operation of the storage device 10 by the control device will be described. When the present invention manufactures parts for assembling a wire harness as an embodiment, the parts storage bag 12 is made of plastic, which is a component of a wire harness of an automobile or the like. Since various connectors and cables to be molded are included and press molding of the connector takes time, the speed of the component storage bag 12 from the chute 11 is about 1 in 5 minutes, while the manual operation from the storage device 10 is performed. Storage in the cardboard box is completed in about 1 minute. Then, even at the work site, the work flow is such that the parts storage bag 12 is discharged from the storage device 10 after waiting for the completion of storage of the parts storage bag 12 in the storage device 10. The operation control of the storage device 10 is also composed of a program part for storing the parts storage bag 12 and a program part for controlling the discharge of the parts storage bag 12 from the storage device 10 in accordance with this work flow. These program parts are written in the read-only memory of the control circuit 74. Hereinafter, the operation control of the storage device 10 will be described by a flowchart. FIG. 5 shows storage of the component storage bag 12 from the chute 11 to the storage device 10. It is a flowchart which shows the operation, and at the start of a storage operation, the support plate 20 is set to stand still at the position facing the upper limit sensor 66 as shown in FIGS. 1 and 7 as an initial state. (Steps 104-110 in the flowchart of FIG. 6 described later). From this initial state, in step 80, it is determined whether or not the input sensor 62 is ON. Since the sensor 62 is OFF when the component storage bag 12 has not arrived at the chute 11, the sensor 62 is determined to be NO and loops. However, when the component storage bag 12 arrives, the sensor 62 is turned ON and a YES determination is made, and the process proceeds to step 82. , The lowering and rotation of the bottom plate 18 is started, and the timer T is started (elapsed time measurement start). That is, the electric motor 24 starts rotating counterclockwise (arrow a in FIG. 1), the chains 40-1 and 40-2 constituting the telescopic body 40 are pulled into the main body 36, and the telescopic body 40 is contracted. , The support plate 20 and the bottom plate 18 on the support plate 20 start descending (arrow d in FIG. 1), and at the same time, the friction rotating plate 26 also starts rotating (arrow a'). The bottom plate 18 on which the vehicle is placed also starts rotating (arrow c). In the next step 84, it is determined whether or not the lower limit sensor 68 is ON. Since the lower limit sensor 68 is turned on when the support plate 20 faces the lower limit sensor 68 and is OFF otherwise, the lower limit sensor 68 is OFF at this time, so a judgment of NO is made, and the timer T is determined in step 86. Is determined whether or not has reached the set value T _0. T ₀ is a value set according to the time required for the bottom plate 18 to rotate at an angle of approximately the width of the parts storage bag 12 after the parts storage bag 12 has fallen onto the bottom plate 18 from the chute 11. Further, the _{amount of lowering of the bottom plate 18 during the set value T 0} is set so that the upper surface of the component storage bag 12 on the bottom plate 18 is below the detection range of the sensor 64. At first, as a matter of course, the timer T has _{not reached the set time T 0} , so a judgment of NO is made, the process returns to step 82, and the bottom plate 18 continues to descend and rotate.

When the bottom plate 18 on which the parts storage bag 12 dropped from the chute 11 is placed rotates at an angle corresponding to approximately the width of the parts storage bag 12 (the state of the parts storage bag on the bottom plate 18 at this time is shown by the imaginary line 12a in FIG. 1). That is, when the portion of the bottom plate 18 facing the chute 11 is approximately formed to receive the next component storage bag 12, the timer T reaches the set time T _0, and the determination in step 86 becomes YES. The process proceeds to step 88, and the bottom plate 18 immediately switches to ascending. That is, the electric motor 24 switches the rotation direction in the clockwise direction b, and the sprocket 42 extends on the support plate 20 and the support plate 20 in order to extend the chains 40-1 and 40-2 as the telescopic body 40 while engaging the chains 40-1 and 40-2 from the main body 36. The bottom plate 18 to be placed starts to rise as shown by the arrow u. When the bottom plate 18 is raised, the one-way clutch 28 is rotated in the non-engaging direction, so that the bottom plate 18 is not rotated (the position in the rotation direction of the component storage bag 12 inserted on the bottom plate 18 is maintained as it is). .. Further, the timer T is cleared at the same time when the bottom plate 18 is switched to the rise (the value of the timer T is set to 0). In the next step 90, it is determined whether or not the top surface sensor 64 is ON. Since the lowering amount of the bottom plate 18 during the set value T ₀ is set so that the upper surface of the component storage bag 12 on the bottom plate 18 is below the detection range of the sensor 64, the component storage bag 12 on the bottom plate 18 is initially set. Since the height of the top sensor 64 is lower than the detection range of the top sensor 64, the top sensor 64 is OFF, the determination in step 90 is NO, the loop is performed in step 90, and the bottom plate 18 continues to rise (arrow u). When the height of the component storage bag 12 on the bottom plate 18 rises to the position of the top sensor 64, the top sensor 64 is switched to ON and the determination in step 90 is YES. Therefore, the process proceeds to step 92 and the electric motor 24 The rise of the bottom plate 18 (arrow u) is stopped by the stop of. Then, it loops to step 80, waits for the arrival of the next component storage bag 12 to the chute 11 (ON of the entry sensor 62), and normally ejects the component storage bag 12 manually from the full storage device 10. Is performed and waits for the start of the next containment process.

FIG. 6 is a flowchart showing an operation by a program portion that controls the discharge of the parts storage bag 12 from the storage device 10 that is full of the parts storage bag 12. In step 100, it is determined whether or not the top surface sensor 64 is OFF. When the component storage bag 12 is full, the top sensor 64 is ON, a determination result of NO is obtained, and the program is looped. When the uppermost component storage bag 12 is discharged, the upper surface sensor 64 is turned off, the determination result in step 100 is YES, the process proceeds to step 102, and the electric motor 24 rotates clockwise (arrow b in FIG. 1). The sprocket 42 extends the chains 40-1, 40-2 from the main body 36, extends the length of the telescopic body 40 formed by the meshing portions of the chains 40-1, 40-2, and the support plate 20 It is raised together with the bottom plate 18 above it (arrow u in FIG. 1). At this time, since the one-way clutch 28 does not transmit the rotation in the arrow b direction to the friction plate 26, the bottom plate 18 remains stationary. In step 104, it is determined whether or not the upper limit sensor 66 is ON. At first, since the upper limit sensor 66 is OFF, it is determined as NO, and the process proceeds to step 106 to determine whether or not the upper surface sensor 64 is ON. When the uppermost component storage bag 12 has not yet risen to the detection range of the upper surface sensor 64, the upper surface sensor 64 is OFF and is determined to be NO, loops to step 102, and supports the support plate 20 and the bottom plate 18 above it. Continue to rise. When the uppermost component storage bag 12 rises to the detection range of the upper surface sensor 64, the upper surface sensor 64 is turned on and is determined to be YES, the process proceeds to step 108, the electric motor 24 is stopped, and the length of the telescopic body 40 is extended. Also stops, and the support plate 20 stops ascending together with the bottom plate 18 above it. Hereinafter, by repeating the process, the component storage bag 12 in the storage device 10 is taken out from the upper layer portion. Then, when the support plate 20 rises to a position facing the upper limit sensor 66 (FIG. 1), the upper limit sensor 66 is turned ON, the determination in step 104 is YES, the process proceeds to step 110, and the parts from the storage device 10 are used. The discharge of the storage bag 12 is completed.

From the explanation of the above flowchart, it can be understood that the following operation of the storage device 10 when the parts storage bag 12 is stored can be understood. That is, FIG. 7 schematically shows the storage device 10 in the vertical cross section, but in the initial state, the support plate 20 is in the upper limit position facing the upper limit sensor 66, and the telescopic body 40 of the actuator 22 is in the maximum extension state. In this state, the parts storage bag 12 is thrown in from the chute 11, and the bottom plate 18 _{rotates little by little (timer T set time T 0} ). Therefore, as schematically shown in FIG. 8, the parts storage bag 12 is It is housed on the bottom plate 18 so as to be spread in the circumferential direction. Then, the parts storage bag 12 for the subsequent storage device 10 is performed for stacking, and the layer of the next parts storage bag 12 is formed on the layer of the parts storage bag 12 laid out first. .. FIG. 9 schematically shows a state in which the component storage bag 12 is stored on the bottom plate 20 in a stacking manner until the storage device 10 is full, and the telescopic body 40 of the actuator 22 is shortened to the minimum and the support plate 20 is used. Is at the lowermost position facing the lower limit sensor 68. Then, the parts storage bag 12 is discharged from the full state from the uppermost layer, and at that time, the support plate 20 and the bottom plate above the support plate 20 are discharged to the detection position (state of FIG. 1) of the parts storage bag 12 by the top sensor 64. Eighteen ascents are made.

The description of the operation of FIGS. 5 and 6 describes the operation when the storage device 10 is filled with the parts storage bag 12 and the parts storage from the storage device 10 filled with the parts storage bag 12 as basic operations. The operation when the bag 12 is discharged until it is empty is explained individually, but when the parts storage bag 12 is taken out before the product is full and the top sensor 64 is turned off. Also, since the top surface sensor 64 is turned on by immediately raising the bottom plate 18, control is performed so that the top surface of the component storage bag 12 in the storage device 10 is always constant.

In the present embodiment, the operation of the storage device 10 has been described as being controlled by software by a microcomputer-type control circuit 74, but this is not always essential, and the same operation is performed by hardware such as a sequencer. It can be realized by wear, and it goes without saying that this is also included in the technical idea of the present invention.

10 ... Storage device 11 ... Chute 12 ... Parts storage bag (product of the present invention)
14 ... Support base 16 ... Outer cylinder (cylindrical body of the present invention)
18 ... Bottom plate 20 ... Support plate 22 ... Linear drive type actuator 24 ... Electric motor (motor)
26 ... Friction rotating plate 28 ... One-way clutch 30 ... Ball bearing 34 ... Ball roller 36 ... Actuator body 40 ... Actuator telescopic body
40-1, 40-2 ... Mating chain 42 that constitutes the telescopic body ... Sprocket
48, 50 ... Pulley 52 ... Belt 56 ... Friction rod 58 ... Guide roller 62 ... Entering sensor 64 ... Top sensor 66 ... Upper limit sensor 68 ... Lower limit sensor 70 ... Caster 72 ... Handle 74 ... Control circuit

Claims (7)

The following components, i.e.
Support stand,
Cylindrical body fixed on the support base,
A bottom plate, which is rotatably arranged relative to the tubular body and forms a storage space for the product with the tubular body,
A support plate that is placed close to the bottom plate on the support base side and on which the bottom plate is rotatably placed.
By rotating the main body fixed to the support base side of the support plate, the rotary drive shaft extending parallel to the bottom plate from the main body, and the rotary drive shaft, the rotation angle is maintained in a rigid state according to the rotation direction. extending out or retracted, the main body and spaced side end linear drive actuator with a fixed telescopic body support base side toward the support base from the body Te stroke amount corresponding to,
A prime mover whose housing is fixed to the support base side of a support plate and whose rotation shaft is rotationally connected to the rotation drive shaft of a linear drive actuator.
A friction rotating plate that is rotatably supported on the support base side of the support plate, has a rotating shaft parallel to the bottom plate, and drives the rotation of the bottom plate by frictionally engaging with the facing surface of the bottom plate at the outer peripheral edge.
A one-way clutch that connects the rotary drive shaft of the prime mover and the rotary shaft of the friction rotary plate and transmits the rotation of the rotary shaft of the prime mover to the friction rotary plate only in one direction corresponding to the downward movement of the bottom plate toward the support base.
A storage device that is equipped with. In the invention according to claim 1, the linear drive type actuator is a storage device which is a type of linear drive type actuator in which a plurality of chains in which a plurality of chain pieces are connected mesh with each other to form a rigid telescopic body. The storage device according to claim 1 or 2, further comprising a guiding means for guiding the elevating movement of the support plate at the outer peripheral portion of the support plate. In the invention according to claim 3, each of the guide means is installed on the outer peripheral portion of the support plate, and a plurality of guide rollers are spaced apart from each other in the circumferential direction so as to roll while abutting on the facing surfaces of the tubular body. A storage device that is. In the invention according to any one of claims 1 to 4, a storage device in which a bearing means is installed on a surface of the support plate facing the bottom plate. In the invention according to claim 5, the bearing means is a storage device including a ball bearing in the central portion and a plurality of ball rollers arranged in the circumferential direction on the outer peripheral portion. In the invention according to any one of claims 1 to 6, the friction rotating plate is provided with a plurality of elastic members at intervals on the outer periphery, and the friction rotating plate is brought into contact with and urged to the bottom plate under elastic force. Storage device to be.

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