JPH0221443Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is an article that can automatically and reliably load and unload cargo of different sizes sent by a conveyor into a rotating small article storage. This relates to access/exit devices.

[Conventional technology]

For a rotating small article storage in which a large number of trays are connected in series and run on elliptical rails laid in multiple stages above and below within the frame, the article loading/unloading device installed at key points allows 2. Description of the Related Art Small article storage devices that allow small articles to be taken in and taken out are effectively used in factories that require a large number of small parts of various types.

At this time, small items are usually placed in a special container or packed in a cardboard box, etc., and then taken in and out of the item loading/unloading device, but the item loading/unloading device is equipped with a guide plate, The tray is designed to directly face the load such as the tray.

[Problem that the invention attempts to solve]

Depending on the number of small items of the same type to be stored, the size of the container that holds them will vary, and the cardboard boxes in which the items are packed will naturally vary in size. The width of the tray is determined according to the maximum width of the load to be stored, so that it can accommodate both large and small loads without any problems.

Therefore, it is wasteful to store small items in a large tray.If the width of the tray was made to correspond to the size of the item and could be used differently, it would be possible to store small items on a rotary type. storage,
It can be used more efficiently.

[Means for solving problems]

In the present invention, in an article loading/unloading device, a pair of parallel guide rods provided on a turntable on which a load is placed are moved symmetrically toward the center, and a space between the guide rods is moved symmetrically toward the center. By pinching the inserted load, the load is placed directly in front of the tray, and the width of the load is detected, and the load is stored in a tray with a width corresponding to the detected width, thereby solving the above-mentioned problem. The aim is to solve the following problems.

The specific method is to move a large number of trays, which are open on the top and outside surfaces and connected in series, in a horizontally long frame and run horizontally on oblong rails that are laid in multiple stages vertically and horizontally. It is an article loading/unloading device installed at one end in the left and right direction (hereinafter referred to as the left end for convenience) of a rotary small article storage, which is arranged slightly to the right of the trays of each stage at the left end of the frame. An air cylinder is installed facing toward the left end of the frame, and the left end of the tray is attached to the tip of the piston rod of the air cylinder, and when the piston rod begins to extend, the left end of the tray is located at the left end of the frame. On the left side of the frame and the pressing plate that reaches close,
A horizontal elevating plate provided so as to be able to be raised and lowered as appropriate, a horizontal turntable provided on the elevating plate so as to be rotatable around a vertical axis, and a diametrically symmetrical and Two pairs of inner and outer cargo receiving chains provided to reciprocate in the left and right direction, running plates fixed to the front and rear inner cargo receiving chains, and a pressing arm facing leftward fixed to the upper surface of the running plates; A pressing rod fixed to the left end of the pressing arm and facing in the front-rear direction, a pivot rod standing diametrically symmetrically at the front and rear of the left side of the turntable, and a bent part pivoting on the rear left pivot rod. The detection arm is shaped like an inverted L in plan view, the link faces to the left and the right end is pivoted to the pivot rod on the rear right side, and the base piece of the detection arm and the link are arranged to be parallel to each other. a guide rod that is pivotally connected to the guide rod, a link that is pivoted to the left front pivot rod, faces to the left and has the same length as the link, and a bending portion that is pivotally connected to the front right pivot rod. , a bending link forming an inverted shape in a plan view, a guide rod pivotally connecting the link and the bending link so as to be parallel to each other, a right end of the bending bend on the right side of the bending link, and a bending piece in the link. A connecting rod for pivotally connecting parts of equal length, and means for driving any one of the above-mentioned detection arms, links, links, and bending links in forward and reverse rotation around the pivot portions, and these detection arms, By simultaneously rotating the link, the link, and the bending link, the guide rod can be moved toward or away from the outer load receiving chain at the same time, and the sensing arm is brought into contact with the micro switch to This is characterized in that the stopping positions of both guide rods can be regulated by stopping forward and reverse rotation.

[Effect]

According to the device of the present invention, the cargo conveyed by the conveyor is transported by a moving cargo receiving chain.
After pulling the turntable between both guide rods from one end, if both parallel four-rod links connected by the linking rod are deformed at the same time, both guide rods will pinch the load and force it into the correct position and posture. A sensor detects the degree of deformation of the parallel four-bar link and determines whether the load is large.

Then, by raising and lowering the lifting plate and rotating the turntable, the loading/unloading port for the load is directly opposed to the desired tray corresponding to the size of the load.
The load on the turntable is guided to the guide rod by the load receiving chain and the push rod, and is reliably pushed into the tray.

If the loading/unloading port of the turntable is directly opposed to the loaded tray, the pushing device pushes the loading onto the turntable, and then the device of the present invention is operated in the opposite direction to the loading operation. Loads can be transferred onto the conveyor.

〔Example〕

5 and 6 show a small article storage device, where A is a known rotating small article storage, B is located on the left side, which is one end of the rotating small article storage A,
The article loading and unloading device C according to the present invention for loading and unloading cargo such as containers containing small articles or cardboard boxes packed with small articles is located on the left side of the article loading and unloading device B, and conveys the load in the left-right direction. This is a belt conveyor.

On the frame body 1, horizontally oriented oval outer rails 2 are laid in multiple stages (five stages in the figure) at regular intervals vertically. A pair of inner rails 3 are laid inside the outer rail 2, parallel to the straight portion of the outer rail 2 with a predetermined distance therebetween.

A large number of trays 4 with open upper and outer surfaces are connected in series and placed on the upper three-tiered inner and outer rails 3 and 2 so as to be freely movable. A large number of trays 5 having the same structure as the tray 4 but having a width smaller than the tray 4 are mounted on the trays 3 and 2, connected in series.

6 and 7 are connecting plates and connecting pins that connect the upper trays 4 to each other. The lower trays 5 are also connected by similar means.

A fixed shaft 8 is erected at the center of the semicircular portion of the outer rail 2 at the left end of the frame 1, and sprockets 9 and 10 are provided at positions corresponding to the trays 4 and 5 of each stage on the fixed shaft 8, respectively. The connecting pin 7 is engaged with each sprocket 9,10.

The right end of the frame 1 is constructed in almost the same way, and a motor provided at the right end moves each tray 4, 5.
The machine turns independently, and when it stops, it turns at the left end in Figure 6 (the directions are as follows, except in Figures 3 and 7).
It's all about drawings. ), each tray 4,5 is
Directly facing article loading/unloading device B.

The above-mentioned rotary small article storage A is similar to a known one.

An air cylinder 11 facing left is installed at the left end of the frame 1, slightly to the right and above the trays 4 and 5 of each stage, and a pressure plate 12 is attached to the tip of the piston rod 11a. ing.

When the piston rod 11a begins to extend, the pressing plate 12 reaches near the left ends of the trays 4 and 5 located at the left end of the frame 1.

Between the rotary small article storage A and the belt conveyor C, two pairs of left and right guide rails 13, 13 are erected on the frame 1, facing each other in the front and back.

Reference numeral 14 denotes a horizontal rectangular lifting plate, with roller mounting rods 15, 15 erected at both left and right ends of its front and rear edges.
Flanged rollers 16, 16, which are pivotally supported with left and right axes at both upper and lower ends of the guide rail 13, are engaged with the guide rail 13.

In the middle of the guide rails 13, 13 arranged on the left and right, sprockets 17 are pivotally installed at the upper and lower ends of the frame 1, respectively, with left and right axes, and are arranged side by side with the sprockets 17 at both the upper and lower ends of the rear side. A sprocket 18 having a diameter and being coaxial is pivotally mounted on the frame body 1.

At the rear lower end of the frame 1, there is a lower sprocket 1.
A large-diameter sprocket 19 having a larger diameter than 7 and 18 and coaxial with them is pivotally installed.

The four sprockets 17, 17, front and rear, top and bottom,
The first endless chain 20 is wrapped around the two upper and lower sprockets 18, 18 at the front, and the second endless chain 21 is wrapped around the two upper and lower sprockets 18, 18, and both endless chains 20,
The center portions of both the front and rear edges of the elevating plate 14 are fixedly attached to 21, respectively.

The large-diameter sprocket 19 is connected to a sprocket 23 of a deceleration motor 22 installed behind it through an endless chain 24.
As a result, the elevating plate 14 is raised and lowered along the guide rail 13 while maintaining its horizontal position.

As shown in FIGS. 1 to 3, a short support shaft 25 that projects upward from the center of the upper surface of the elevating plate 14 is attached to the lower surface of a horizontal turntable 26 that is slightly above the elevating plate 14. The center is pivoted. The turntable 26 is rotatably supported on the elevating plate 14 by rollers 27 which are pivotally mounted on the lower surface of the turntable 27 at intervals of 90 degrees on the same circumference.

An inward semicircular arc-shaped rack 28 centered around a support shaft 25 is fixed to the right half of the upper surface of the elevating plate 14 . A pinion 30 on a motor shaft of a deceleration motor 29 mounted on the front of the upper surface of the turntable 26, which passes through the turntable 26, is engaged with the rack 28.

Therefore, the turntable 26
9, it rotates around the support shaft 25 within a range of 180°.

On the upper surface of the turntable 26, there are a pair of U-shaped groove-shaped load receiving rods 31, 31, which are open at the bottom and open at the bottom, which are parallel to each other and have a slight gap between them in the left-right direction. A rectangular notch 32, a window hole 33, and a notch 34 are cut in the left end, slightly right of the center, and right end of each receiving rod 31, respectively.

A vertical piece of a guide rail 35 having a "shaped" side surface is fixed to the upper end of the opposing surface of each receiving rod 31.

Below the notch 32 at the left end of each load receiving rod 31 are located two drive sprockets 37 and 38 of the same diameter fixed to a drive shaft 36 facing in the front-rear direction. It protrudes slightly upwards.

A transmission sprocket 39 is fixed to the rear end of the drive shaft 36 that passes through the rear load receiving rod 31, and an endless transmission sprocket 39 and a sprocket 41 of a deceleration motor 40 fixed to the rear of the turntable 26 are connected to each other. A chain 42 is looped around.

A driven sprocket 44 that is integral with a driven shaft 43 facing in the front-rear direction is disposed below the window hole 33 slightly to the right of the center of each load receiving rod 31, and each driven sprocket 44 and the drive sprocket 37 have an endless An outer cargo receiving chain 45 is routed around the outer cargo receiving chain 45.

A driven sprocket 47 is provided below the notch 34 at the right end of both load receiving rods 31 and is integrated with a driven shaft 46 facing in the front-rear direction.
An endless inner cargo receiving chain 48 is routed around the drive sprocket 38.

Both front and rear ends of a rectangular running plate 49 are fixed to the front and rear inner cargo receiving chains 48 via attachment fittings 50.

The front and rear hanging pieces 51, 51 hanging down from the lower surface of the running plate 49 are rollers that fit between the guide rails 35, 35 and are pivoted on the outer surface of each hanging piece 51 with a front and back axis. 52 is riding on the guide race 35.

A pressing arm 53 facing leftward is fixed to the upper surface of the traveling plate 49 slightly above the running plate 49, and a pressing rod 54 facing forward and backward is fixed to the upper left end thereof.

Therefore, due to the rotation of the deceleration motor 40, the press rod 54 rotates together with the outer and inner load receiving chains 45, 48, and when the press rod 54 reaches its left limit, it protrudes slightly to the left from the turntable 26. .

At the left and right rear portions of the turntable 26, pivot rods 55,
56 are erected. Also, turntable 2
A pivot lever 57 and a pivot tube 58 are respectively provided upright at locations that are front and rear symmetrical to the pivot levers 55 and 56 at the front of the vehicle.

A bent portion of a detection arm 59 having an inverted L shape in plan view and a right end of a link 60 facing left are pivotally attached to the upper ends of the left and right rear pivot rods 55 and 56, respectively.

The left end of the base piece 59a facing left in the detection arm 59 and the left end of the link 60 that is parallel to this are located between both pivot rods 55, 56 and the load receiving rod 31, and are connected to the load receiving rod 31. Near both ends of the parallel guide rod 61 are pivotally connected with pins 62 and 63, respectively.

Both pivot rods 55, 56 and pins 62, 63 form four vertices of a parallel four-rod link with both pivot rods 55, 56 as fixed points.

Micro switches 64 and 65 are provided at key points on the left rear of the turntable 26, which are operated by the tip of the detection piece 59b of the detection arm 59, as will be described later.
are installed in order from the right.

The upper end of the pivot rod 57 located in front of the cargo receiving rod 31 and the upper end of the support rod 66 pivotally fitted in the pivot tube 58 are provided with the link 60 facing left, respectively.
A link 67 having the same length as , and a bending portion of a bending link 68 having an inverse shape in plan view are pivotally connected.

The left end of the link 67 and the left end of the left link piece 68a of the bending link 68 are connected to the guide rod 61, respectively.
Near both ends of the guide rod 61 paired with the pins 69,
It is pivoted with 70.

The pivot rod 57 and the pins 69, 70 of the pivot shaft 66 form four vertices of the parallel four-rod link, which are equal in size to the rear parallel four-rod link and are symmetrical in the front and rear directions.

At the right end of the right bending piece 68b of the bending link 68 and at a point of the link 60 that is the same length as the bending piece 68b from the pivot rod 56, both ends of a linking rod 71 are pivoted with pins 72 and 73, respectively. worn,
The bending piece 68b and the link 60 are connected to the linking rod 71 at the same time.
The dimensions of each part are determined so that they can be perpendicular to each other.

Therefore, when the bending link 68 rotates around the pivot shaft 66, the link 60 and the link pieces 68a of the bending link 68 rotate symmetrically around the pivot rod 56 and the pivot rod 66, respectively.

A drive sprocket 74 fitted to the lower end of the pivot rod 66 passing through the turntable 26, and a torque motor 75 arranged at the front right portion of the turntable 26.
The sprocket 76 has an endless drive chain 7.
7 is being thrown around.

Therefore, when the bending link 68 is moved by the torque motor 75, the bending link 68 is moved as described above.
The link piece 68a and the link 60 rotate symmetrically in the front and back, and the front parallel four-rod link and the rear parallel four-rod link also deform in a front-and-back symmetrical manner, and both the front and rear guide rods 61, 61 become parallel. The turntable 26 moves forward and backward symmetrically with respect to the diameter of the turntable 26 in the left and right direction while maintaining the same position.

Next, the operation of the above article loading/unloading device will be explained based on FIGS. 4a to 4g.

In FIG. 4a, the turntable 26 of the article loading/unloading device B is set at a height such that the receiving rod 31 is at the same height as the belt conveyor C, the pressing rod 54 is positioned at the left end of the turntable 26, and both guide rods 6
The interval between 1 and 61 is set as the largest.

At this time, the detection piece 59a of the detection arm 59 is in contact with the micro switch 64.

As shown in FIG. 4a, when a large load 78 conveyed by the belt conveyor C comes into contact with the pressure rod 54, the deceleration motor 40 starts and the pressure rod 5
4 moves to the right along with the first and second cargo receiving chains 45, 48, and the cargo 78 moves to the right along with the first and second receiving chains 45, 48.
8 and is drawn between the guide rods 61, 61.

As shown in FIG. 4b, when the load 78 reaches approximately the center of the turntable 26, the deceleration motor 40 stops and the torque motor 75 starts.

As a result, both guide rods 61 are brought close to each other at the same time.
A load 78 that is off-center or facing in an oblique direction is held between the turntables 26, its posture and position corrected, and the load 78 is placed directly facing the wide tray 4, as shown in FIG. 4c. let

When the guide rods 61, 61 abut the entire length of both the front and rear surfaces of the load 78, the torque motor 75 stops.

At this time, the detection piece 59a of the detection arm 59 is located between the two microswitches 64 and 65.

The above description is for a large load 78, but a small load 79 can also be corrected to the correct position at the center of the turntable 26 by the same operation as described above, as shown in FIG. 4d.

At this time, the detection piece 59a of the detection arm 59 comes into contact with the microswitch 65, so the microswitches 64 and 65 can determine the size of the load on the turntable 26.

At the same time as the torque motor 75 stops, the deceleration motor 29 starts regardless of the size of the load, and the fourth
As shown in Figure e, the turntable 26 rotates 180 degrees and then stops.

At the same time, the deceleration motor 22 starts, and if the load 79 is small, the turntable 26 is moved so that the load 79 directly faces the target narrow tray 5 in the lower stage of the rotary small article storage A. After
The deceleration motor 22 stops.

Then, the deceleration motor 40 rotates in reverse, and the pressing rod 54, which had come to the left, is moved to the both receiving chains 45, 48.
and move to the right (Fig. 4f).

At this time, the cargo 79 is initially transferred to both receiving chains 45,
48, move to the right, and continue using the push rod 54.
It is firmly pushed into the tray 5. Next, both receiving chains 45, 48, pressing rod 54, and both guide rods 6
1 returns to the state shown in FIG. 4a.

By extending the air cylinder 11 as described above, the present invention can move the load 79 onto the belt conveyor C.
It operates in the same way as when pushing it into tray 5 from above,
The load 79 in the tray 5 is pushed out onto the turntable 26, and then the air cylinder 11 is shortened.

When pushing out the load 79 from the rotary small article storage A, regardless of the size of the load 79, the guide rods 61, 61 may be set in the most open state, as shown in FIG. 4a.

When pushing out the load 79 onto the belt conveyor C, if the guide rods 61 and 61 are opened to the maximum, the load receiving chains 45 and 48 will push the load 79 onto the belt conveyor C after the turntable 26 rotates. extrude

Thereafter, by an operation opposite to that described above, the load 79 is carried out onto the belt conveyor C which runs in the opposite direction to that at the time of storage.

In addition, in the operation of the above-mentioned parts, changing the running direction of the belt conveyor C, motors 22, 29, 4
Starting and stopping of the 0 and 75, change of the direction of rotation thereof, expansion and contraction of the air cylinder 11, etc. can be automatically performed by article detection sensors such as microswitches provided at key points of each member. The stop position of the elevating plate 14 can be electrically instructed by operating a push button.

Moreover, the elevating means for elevating and lowering the elevating plate 14 may be replaced with the above-mentioned one and may be elevated along one support that is erected at key points.

Further, the belt conveyor C may be provided perpendicularly to the rotary small article storage A, and the turntable 26 may be rotated at an angle of 90 degrees.

Instead of belt conveyor C, load 7 is manually transported.
8 and 79 may be inserted and removed.

[Effect of idea]

Automatically determines the size of the transported cargo,
Since small articles can be stored in the trays 4 and 5 corresponding to their sizes, the rotary small article storage A can be used efficiently and without waste.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the turntable of the device of the present invention, FIG. 2 is a view taken along the line X-X in FIG.
Figure 3 is a Y-Y line arrow view in Figure 1,
Figures a to 4g are plan views schematically showing the operation of the present invention. Figure 4a shows the state immediately before a large load is carried into the apparatus of the present invention, and Figure 4b shows the state immediately after the same. Figure 4c shows the state in which the device of the present invention has corrected the position of a large load that has been brought in.
The figure shows the same small load with its position corrected.
Figure 4e shows the state in which the turntable has rotated 180 degrees, Figure 4f shows the state when the device of the present invention pushes the load into the tray of the rotating small article storage, and Figure 4g shows the state in which the turntable has rotated 180 degrees. FIG. 5 is a front view of the small article storage device equipped with the device of the present invention, and FIG. 6 is a top view and FIG. FIG. 7 is a left rear upper perspective view schematically showing the elevating means for the elevating plate. A... Rotating small article storage, B... Article loading/unloading device, C... Belt conveyor, 1... Frame, 2...
Outer rail, 3... Inner rail, 4, 5... Tray,
6... Connecting plate, 7... Connecting pin, 8... Fixed shaft,
9, 10...Sprocket, 11...Air cylinder, 11a...Piston rod, 12...Press plate,
13... Guide rail, 14... Elevating board, 15...
Mounting rod, 16... Roller, 17, 18... Sprocket, 19... Large diameter sprocket, 20... First endless chain, 21... Second endless chain, 2
2... Deceleration motor, 23... Sprocket, 24
... Endless chain, 25 ... Support shaft, 26 ... Turntable, 27 ... Roller, 28 ... Rack,
29... Deceleration motor, 30... Pinion, 31...
...Receiving rod, 32...Notch, 33...Window hole, 34...
... Notch, 35 ... Guide rail, 36 ... Drive shaft,
37, 38... Drive sprocket, 39... Transmission sprocket, 40... Deceleration motor, 41... Sprocket, 42... Transmission chain, 43... Driven shaft, 44... Driven sprocket, 45... Outer cargo receiving chain, 46... Driven shaft, 47... Driven sprocket, 48... Inner receiving chain, 49...
...Travel plate, 50...Mounting bracket, 51...Descent piece,
52... Roller, 53... Pressing arm, 54... Pressing rod, 55, 56, 57... Pivoting rod, 58... Pivoting tube, 59... Sensing arm, 59a... Base piece, 59b...
...Detection piece, 60...Link, 61...Guide rod, 6
2,63...pin, 64,65...micro switch, 66...pivot rod, 67...link, 68...
...Bending link, 68a... Link piece, 68b...
Bent piece, 69, 70...pin, 71...linking rod,
72, 73... Pin, 74... Drive sprocket, 75... Torque motor, 76... Sprocket, 77... Drive chain, 78, 79... Load.

Claims (1)

[Claims for Utility Model Registration] An elliptical rail in which the top and outer surfaces are open and a large number of trays 4 and 5 connected in series are laid in vertical and multi-tiered frames 1 that are long in the left and right direction. An article loading/unloading device B provided at one end in the left and right direction (hereinafter referred to as the left end for convenience) of a rotary small article storage A whose upper part is rotated in the left and right directions, and includes a frame 1 An air cylinder 11 is installed slightly to the right and above the trays 4 and 5 of each stage at the left end of the frame body 1, and is installed on the tip of the piston rod 11a of the air cylinder 11, and the piston When the rod 11a begins to extend,
A pressing plate 12 that reaches near the left end of the trays 4 and 5 located at the left end of the frame body 1; A horizontal elevating plate 14 provided on the left side of the frame body 1 so as to be able to be raised and lowered as appropriate; and an elevating plate 14 A horizontal turntable 26 is provided above so as to be rotatable around a vertical axis, and a diametrically symmetrical
and two pairs of inner and outer cargo receiving chains 48, 48, 45, 4 provided so as to reciprocate in the left and right direction.
5, a running plate 49 fixed to the front and rear inner load receiving chains 48, 48, a pressing arm 53 facing leftward fixed to the upper surface of the running plate 49, and a front-back direction fixed to the left end of the pressing arm 53. a pressing rod 54 facing toward the left and right sides of the turntable 26, and pivot rods 55, 56, 57, 66 erected diametrically symmetrically at the front and rear of the left and right sides of the turntable 26;
, a detection arm 59 having an inverted L-shape in plan view, whose bent portion is pivoted to the pivot rod 55 on the rear left side, and a link 60 facing left, whose right end is pivoted to the pivot rod 56 on the rear right side. , the base piece 59a in the detection arm 59 and the link 6
a guide rod 61 which pivotally connects the 0 and 0 so as to be parallel to each other; and a link 6 which is pivotally supported by the front left pivot rod 57, faces leftward, and has the same length as the link 60.
7, the bending part is pivotally attached to the front right pivot rod 66,
A bending link 68 having an inverted shape in a plan view, a guide rod 61 pivotally connecting the link 67 and the bending link 68 so as to be parallel to each other, the right end of the right bending piece 68b of the bending link 68, A linking rod 71 that pivotally connects the bending piece 68b and a portion of the same length in the link 60, and any one of the detection arm 59, the link 60, the link 67, and the bending link 68 is driven to rotate in forward and reverse directions around its pivot point. These detection arms 59, links 60, links 67,
Due to the simultaneous rotation of the bending link 68, the guide rods 61,
61 can be moved toward or away from the outer cargo receiving chains 48 and 48 at the same time, and the detection arm 59 is configured to move the micro switch 6
An article loading/unloading device in a rotary small article storage device, characterized in that the stop position of both guide rods 61, 61 can be regulated by stopping the forward and reverse rotation thereof by contacting the guide rods 4, 65. .