JP3436430B2 - Sheave cleaning method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cleaning of each sheave after sieving and weighing a granular material with a sheave layer in which a plurality of sheaves are successively fined from an upper layer to a lower layer.

[0002]

2. Description of the Related Art A conventional automatic sieving measuring device has a sieving mechanism and a weighing mechanism, and a robot arm moves a sheave between both mechanisms, as disclosed in Japanese Patent Publication No. Sho 63-38228.

The outline of the control procedure is as follows. First, each sieve is weighed, and the powder particles to be weighed are put into the sheave layer and set in a sieving mechanism. Vibration is applied to screen the particles according to the particle size. At the same time, each sheave is weighed by a weighing mechanism, the weight of the granular material for each particle size is obtained by calculation, each weight percentage, integrated weight percentage, etc. are calculated and printed out.

The operator only needs to operate the button switches as appropriate in addition to the addition of the particles to be weighed, and after that, the weighing is automatically performed and the result is printed out, so that the burden on the operator is reduced. At the same time, variations in measured values due to individual differences do not occur.

[0005]

[Problems to be Solved] However, since cleaning of the sheave after the measurement had to be carried out manually, the burden on the operator was not reduced. Also, it is difficult to continuously and automatically measure a plurality of particles to be weighed due to the manual cleaning of the sheave, and continuous and efficient measurement cannot be performed.

The present invention has been made in view of the above points,
The purpose of this is to provide a sheave cleaning method and apparatus that automatically performs cleaning of the sheave after weighing and enables continuous measurement.

[0007]

In order to achieve the above object, the present invention provides a method for cleaning each sheave of a sheave layer obtained by sieving a powder or granular material according to a particle size,
Place the top sheave of the weighed sheave layer in place
A sheave setting step of gripping and moving to a predetermined cleaning position,
A sheave reversing step of reversing the sheave grasped with the suction port of the suction means positioned below the mesh of the sheave at the cleaning position, and applying a brush from above the mesh of the sheave and rotating the suction means at the same time. The sheave cleaning method includes a cleaning step of driving the motor to clean the sheave, and a moving step of moving the cleaned sheave to a predetermined position.

Grasping the upper sheave of the sheave layer after weighing
Then , by inverting the sheave with the suction port of the suction means positioned below, most of the powder particles that have accumulated in the sheave are dropped, and the brush is applied from above to the mesh of the sheave in the sheave reversal state. Since the suction means is driven simultaneously with the movement, the granular material clogged in the mesh of the sheave is removed by the brush, and the granular material is surely removed by being sucked into the suction port and the sheave is efficiently cleaned.

In addition, in a device for cleaning each sheave of a sheave layer obtained by sieving a granular material according to a particle size, a predetermined position
Hold the uppermost sheave of the weighed sheave layer placed on the
A robot arm that moves to a predetermined cleaning position and reverses the gripped sheave, a brush driving unit that applies a brush from above to the mesh of the sheave whose predetermined cleaning position is reversed, and rotates the brush, and a sheave whose predetermined cleaning position is reversed. The sheave cleaning device is provided with a suction means for locating the suction port below the mesh, and for controlling the robot arm, the brush drive means, and the suction means.

The robot arm grips the sheave, sets it at a predetermined cleaning position, and reverses the sheave with the suction port of the suction means positioned below, thereby dropping most of the powder or granules accumulated in the sheave. , A brush is applied from above to the mesh of the inverted sheave, and the brush can be rotated by the brush driving means to remove the powder and granules clogged in the mesh of the sheave, and the powder can be removed by driving the suction means below. Since suction is performed, it is possible to reliably remove the granular material and automatically perform a complete cleaning. Since it is possible to incorporate both into the automatic sieving measurement device and to operate them simultaneously, it is possible to measure a plurality of powder and granular materials to be measured continuously and efficiently.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 12 will be described below. The sheave cleaning device of the present embodiment is incorporated in the automatic sieving measurement device 1. FIG. 1 is an external view of the automatic sieving measurement device 1. An opening is formed in the front surface of a casing 2 having a substantially rectangular parallelepiped shape. A door 3 with a transparent acrylic resin plate window is pivotally attached to the opening at its lower edge so as to be swingable upward or in the front horizontal direction.

A horizontally elongated operation display panel 4 is provided above the front opening, and various operation buttons and various indicators are provided on the operation display panel 4, and the measurement results are provided on the left side thereof. A printer 5 for printing out is provided. A sampler door 6 made of a colored and translucent acrylic resin plate is provided so as to be openable and closable above the operation display panel 4 and over the upper surface of the casing.

FIG. 2 shows a state in which the front door 3 is swung to the front and opened. On the upper surface of the bottom wall 2a inside the opening, a sheave table 10 is arranged on the left side in FIG. 2 and has three disk-shaped sheave layers for rotation, and an electronic balance 11 is located in the center and is located on the right side. The lower placement part 16 of the automatic sieving mechanism 15 is arranged. Above the electronic balance 11 is a sample inlet 12
The upper holding part 17 is located above the lower mounting part 16 of the sieving mechanism 15 so as to face it, and the horizontal pulse device 18 is arranged along the inner surface of the right side wall.

A sheave cleaning mechanism 20 is incorporated above the sheave table 10. A horizontal swing arm 22 is projected forward so that it can swing right and left from the inner back wall 2b of the casing 2, and a cleaning brush 21 is rotatably provided at the tip of the horizontal swing arm 22 with the brush facing downward. At a predetermined height position lower than the cleaning brush 21, a flat cylindrical suction port 23 with a bottom is provided horizontally at the tip of a duct pipe 24 that also projects toward the front from the back wall, with the opening facing upward. 24 is the arm
Similarly to 22, the back side is pivotally supported, and the suction port 23 at the tip can be swung left and right.

The structure of the suction mechanism 90 is briefly shown in FIG. 3 and described. The swinging duct pipe 24 is swingably connected to a vertical duct pipe 91 on the downstream side, and the duct pipe 91 is bent at the lower end to expose the connection port 91a from the rear surface of the casing 2 to the outside. The other end of the hose 92 whose one end is connected to the connection port 91a is connected to the inlet connection pipe 93a of the cyclone 93, and the outlet connection pipe 93b of the cyclone 93 and the inlet connection pipe 95b of the dust collector 95 are connected.
And a hose 94 are connected to each other, and a hose 96 extending from the outlet of the dust collector 95 using the filter cloth 95a is connected to the blower 97.

Therefore, when the blower 97 is driven, the powder or granular material sucked from the suction port 23 passes through the duct pipes 24, 90 and the hose 92 to reach the cyclone 93, where about 70 to 90% is collected and further the cyclone 93. The powder and granules that have passed through are collected by the filter cloth 95a of the dust collector 95 at the next stage. Therefore, most of the measured particles are collected by the cyclone 93 and the dust collector 95, and the discharge of the particles to the outside is prevented.

In FIG. 2, a screw rod 25 is rotatably provided vertically at a position along the back wall 2b between the sheave table 10 and the electronic balance 11, and is screwed to the screw rod 25 so as to be vertically movable. The robot arm 26 is equipped with a sheave stand.
The sheave 30 is moved between the electronic balance 11 and the electronic balance 11, and on the other hand, a robot arm 28 which is also screwed up and down by screwing with a screw rod 27 is arranged on the right side of the robot arm 26, and an electronic balance 11 and a sieving mechanism 15 are provided. The sheave 30 is moved between them. One robot arm 26 is also a part of the sheave cleaning mechanism 20, and plays a role of supporting the sheave 30 when cleaning the sheave.

As shown in FIG. 4, the sheave 30 is composed of a flat cylindrical frame body 30a and a net 30b which is integrally stretched in the case at a substantially central portion in the thickness direction of the cylindrical frame body 30a. 30a
A notch is formed in the inner peripheral edge of the upper end portion and the outer peripheral edge of the lower end portion, and the cylindrical frame body of the upper sheave 30 has a notch on the inner periphery of the cylindrical frame body 30a of the lower sheave 30. A lower end portion having a notch on the outer periphery of 30a is removably fitted, and as shown in FIG. 5, six sheaves 30 are layered to form a sheave layer 31. In this embodiment, the sheave 30 can be used by stacking up to 8 layers.

Three sets of the sheave layers 31 are placed on the sheave table 10 at predetermined positions, and the position can be changed by rotation so that the desired sheave 30 can be gripped by the robot arm 26. The electronic balance 11 weighs the sheave 30 itself placed on the upper plate, and weighs the sheave 30 and the particles to be weighed accumulated in the sheave 30 together, but zero adjustment is automatically performed each time the sheave 30 is overlaid. It is possible to carry out weighing of each sheave. Sieve layer 31 stacked in layers on this electronic balance
The powdered or granular material to be weighed is introduced from the upper sample introduction port 12.

The sieving mechanism 15 has a sieve layer 31 on the lower placing portion 16 in which the mesh 30b is made finer from the upper layer to the lower layer.
Was placed, and the entire sheave layer 31 was raised by the rise of the lower placing portion 16 and pressed against the upper holding portion 17 to be sandwiched between the upper and lower portions to apply sound wave vibration and to the side of the horizontal pulse device 18. The impact vibration is applied by the protrusion of the protrusion 18a and the sieving is performed.

FIG. 6 shows a state in which the sampler door 6 is opened, and a sampler mechanism 35 is provided inside.
In the sampler mechanism 35, sample cups 38 are fixed to the tips of a plurality of rotating shafts 37 extending radially around the center rotating disk 36, and a pinion gear 39 is fitted to the rotating shaft 37. .

The sample introduction port 12 is open at a predetermined position below the orbit of the sample cup 38, and the sample cup 38 that has opened upward and swung counterclockwise is set at a predetermined position immediately before the sample introduction port 12. The pinion gear 39 fitted to the rotation shaft 37 of the sample cup 38 meshes with a rack 40 that is provided at a position and can be appropriately moved up and down, and is rotated 180 degrees to open the opening downward so that the powder particles to be weighed are put inside. The body can be put into the sample introduction port 12, and the powdery particles can be put into the upper sheave 30 of the sheave layer 31 located below the sample introduction port 12.

When the sample cup 38 is turned upside down and a powder or granular material is thrown in, a striking device 41 provided in the vicinity of the sample cup 38 projects the projection 41a and strikes the sample cup 38 to strike it. All the powder and granules in the sample cup 38 are put in without any residue. The rotary disc 36 is detachable, and can be taken out together with the sample cup 38 provided around it by holding the handle 36a attached to the upper surface.

Next, the structure of the robot arm 26 will be described with reference to FIG. In the robot arm 26, an elevating / lowering support member 45 screwed to the screw rod 25 is guided by a guide by the rotation of the screw rod 25 to ascend / descend without changing its posture, and is swingably supported by the elevating / lowering support member 45 so as to be horizontally swingable. A member 46 is provided, and left and right arm members 47 and 48 extend horizontally to the rocking support member 46 so as to face each other.

Both arm members 47 and 48 have their base ends pivotally supported, and their ends can be moved closer to or farther from each other by driving a motor 49 provided on the back side. A flat cylindrical rubber protrusion 50 is rotatably attached to the inner surface of the tip of one arm member 47, and the other arm member 48 is a pair of plates extending in parallel. A crescent-shaped gripping member 51 is rotatably attached to the inner surface of the tip of the.

The grip member 51 is a rotary shaft 52 fixed to the central portion.
Is pivotally attached to a pair of plates of the arm member 48, and a pulley is installed between the plates.
53 is fitted to the rotating shaft 52, a belt 56 is laid between the pulley 55 and the pulley 53 fitted to the drive shaft of the motor 54 provided at the base end of the arm member 48, Motor 54
The driving of the gripping member 51 can be rotated via the belt 56. Rubber projections 51a, 51a are fixed to the inner surfaces of both ends of the grip member 51, respectively.
The rubber projection 50 provided on the tip of the arm member 47 can contact the outer peripheral surface of the frame body 30a of the sheave 30 to clamp the sheave 30.

That is, as shown in FIG. 7, when the sheave 30 is positioned between the arm members 47 and 48 while the gripping member 51 is horizontal, and the motor 49 is driven to close the arm members 47 and 48, the tip of the arm member 47 is closed. The sheave 30 is sandwiched at three points by the rubber projections 50 on both sides and the rubber projections 51a, 51a on both ends of the grip member 51. Then, when the motor 54 is driven, the gripping member 51 rotates, and at the same time, the sandwiched sheave 30 is reversed (see FIG. 8).

A disc 57 having a notch at a target position is fitted on the rotary shaft 52 integrated with the grip member 51.
Limit switch 58 operating part along the circumference of
58a can detect the notch of the circular plate 57, detect the horizontal state of the gripping member 51 after a half rotation from the horizontal state, and use the control of the motor 54 to reverse the sheave 30 approximately 180 degrees. There is. Therefore, the robot hand 26 can hold the sheave 30, swing horizontally, move between the sheave table 10 and the electronic balance 11, and reverse the sheave 30.

The other robot arm 28 is the same as the robot arm 26 in terms of its vertical movement, horizontal swing, and opening / closing mechanism of the arm members 28a, 28a, and only the two arm members 28a, 28a form a gripping member. Is symmetrical,
The difference is that it does not have a reversing mechanism.

Next, the cleaning brush 21 provided at the tip of the horizontal swing arm 22 has the handle 21a of the pair of cleaning brushes 21 horizontally placed at the lower end of the rotary shaft 61 vertically provided at the tip of the horizontal swing arm 22. The brushes are attached so as to extend symmetrically, and the brush is directed downward (see FIGS. 8 and 9). Referring to FIG. 8, a pulley 61a is fitted on the rotary shaft 61, a brush turning motor 60 is provided on the base end side of the horizontal swing arm 20, and a pulley 60a fitted on the drive shaft of the motor 60. The belt 59 is bridged between the arm 61 and the pulley 61a at the end of the arm, and the pair of cleaning brushes 21 repeats forward and reverse rotations via the belt 59 by the forward and reverse rotation drive of the motor 60.

As shown in FIG. 9, an L-shaped bent bracket 62 extends laterally from the bottom surface of the tip end portion of the horizontal swing arm 22, and a vertical support shaft 63 is provided with a support shaft 63. A plate cam 64 is swingably suspended from the support shaft 63. The plate cam 64 has an extending portion 64a gradually tapering downward and a notch 64b at the upper portion.
(See FIG. 8), and the extending portion 64a is located at the position where the lower end of the extending portion 64a abuts the swiveling tip of the handle 21a of the cleaning brush 21, and the rotation of the cleaning brush 21 causes the plate cam 64 to swing. .

On the other hand, a bearing member 65 is erected on the upper surface of the tip end of the horizontal swing arm 22, and a swing member 67 is pivotally supported on the bearing member 65 by a pivot 66. The swing member 67 is the plate cam. A leaf spring 68 is fixed to the upper end of a downwardly extending piece 67a that extends to the same side as 64 and extends further downward. The leaf spring 68 is substantially the same as the brush of the cleaning brush 21 at the lower end of the leaf spring 68. A hammer 69 is mounted at the same height position.

A spindle provided along the lower edge of the swing member 67
A roller 71 is rotatably supported by 70, and the roller 71 is in contact with the peripheral surface of the plate cam 64 from above. And swing member
A spring 72 is installed between 67 and the bracket 62, and always urges the swinging member 67 downward.

With the above structure, when the cleaning brush 21 rotates, the handle 21a of the cleaning brush 21 extends to the extension 64a of the plate cam 64.
The plate cam 64 is oscillated each time the plate cam 64 is struck. The plate cam 64 returns to its original position immediately after that, and the roller 71 falls into the notch 64b.
67 swings downward, and at this time the leaf spring 68 is attached to the hammer 69 at the tip.
At the same time, it swings to the cleaning brush 21 side, and if there is the sheave 30 at the same position, the hammer 69 can be abutted against the frame 30a to give a hit.

Next, the temporary holding mechanism 75 constituting the sheave cleaning mechanism 20 will be described. As shown in FIG. 10, a circular opening 76 having a notch at a symmetrical position is formed in the ceiling wall 2c inside the casing 2, and gripping plates 77, 78 penetrating the notch of the circular opening 76 from top to bottom are formed. They are supported facing each other and can be opened and closed freely. As shown in FIG. 11, the grip plates 77 and 78 are vertically long and elongated, and are pivotally attached to a base 79 to open and close an arm 80,
The outer surfaces of the grip plates 77 and 78 are fixedly supported on the tip of the 81
By driving 82, the grip plates 77, 78 are opened and closed via the arms 80, 81, and when closed, the sheave 30 can be gripped from the side.

As shown in FIG. 10, when the robot arm 26 grips the sheave 30 and ascends at a predetermined swing angle, the grip plates 77, 77 are provided on the symmetric surface of the outer periphery of the frame 30a of the sheave 30, which is not gripped.
When the lower ends of 78 come to face each other and the grip plates 77 and 78 are closed, the sheave 30 is gripped at the same time as the robot arm 26, and then the sheave 30 is released by the robot arm 26 side.
30 is supported by the temporary holding mechanism 75 side.

The sheave 30 supported on the temporary holding mechanism 75 side in this way is the sheave 30 carried when the robot arm 26 carries the next sheave 30 to the sheave 30 supported on the temporary holding mechanism 75 side. Gripping plate 77 when positioned immediately below,
When 78 is opened and the sheave 30 is released, an overlapping layer is formed on the lower sheave 30 and is supported by the robot arm 26. Therefore, when the robot arm 26 ascends slightly and the grip plates 77 and 78 are closed again, the lower sheave 30 is removed. The sheave layer 31 can be supported by grasping.

Thus, since the temporary holding mechanism 75 can sequentially hold the sheaves 30 in order from the bottom by exchanging with the robot arm 26, the sheaves 30 above and below the sheave layer 31 before cleaning can be cleaned without changing the order. Later sieve layers can be constructed. In this way, layers are formed and a temporary holding mechanism is provided.
On the contrary, in the sheave layer 31 held by 75, the robot arm 26 grips the lower sheave 30 and the temporary holding mechanism 75 holds the sheave plate 77,
When 78 is opened and released, the support is transferred to the robot arm 26 side.

The sheave cleaning mechanism 20 has the above-mentioned structure and is controlled by a microcomputer together with other sieving and measuring mechanisms. That is, as shown in FIG. 12, the microcomputer 100 includes input switches 101,
Inputs signals from various sensors 102, and sheave cleaning mechanism
20 (brush turning motor 60, suction mechanism 90, temporary holding mechanism
75 etc.) and the robot arms 26, 28, the electronic balance 11, the sampler mechanism 35, the sieving mechanism 15, etc., and display the work process and the situation on the operation display panel 4 as appropriate, and the electronic balance 11 performs the weighing. The result of the original calculation is printed out by the printer 5.

Before describing the control procedure of the sheave cleaning mechanism 20 by the microcomputer 100, the procedure of automatic sieving measurement will be briefly described. First, three sets of sheave layers 31 are placed on the sheave table 10 at predetermined positions. At that time, the sheave layer 31 is formed by stacking sheaves 30 having coarse meshes in order from the upper layer to the lower layer.

By rotating the sheave table 10, the robot arm 26 sequentially grips the sheave 30 from the uppermost layer of the sheave layer 31 located at a predetermined position and transfers it to the electronic balance 11 and sequentially weighs the sheave 30 itself individually. Done and electronic balance
The disc 36 of the sampler mechanism 35 is placed on the sheave layer 31, which is formed by finely meshing the layers from the upper layer to the lower layer on the 11 upper plate.
The sample cup 38 is inverted by the rotation of the sample cup 38
The to-be-measured powder and granules are charged from the sample introduction port 12 and the amount of the powder and granules charged is measured.

Next, the robot arm 28 is the sheave 30 in the lowermost layer.
Then, the entire sheave layer 31 is moved to the sieving mechanism 15 and is placed on the lower placing portion 16. The lower placing portion 16 rises to sandwich the sheave layer 31 between the lower placing portion 16 and the upper holding portion 17, and sifting is performed by sonic vibration and impact vibration.

After sieving, the lower placing part 16 descends together with the sheave layer 31, and the robot arm 28 moves the uppermost sheave.
From 30 to the electronic balance 11 are sequentially transferred and weighed individually while sequentially stacked, and the weight of the powder and granules accumulated in each sheave 30 is calculated by subtracting the measured value of the previous sheave itself, Calculate the weight distribution according to the particle size. The calculation result is printed out by the printer 5.

The weighed sheave layer 31 is moved by the robot arm 26 from the electronic balance 11 to the sheave table 10 by gripping the lowermost sheave 30. With the above, the measurement of one powder or granular material is completed, and the measurement of another powder or granular material using the sheave layer 31 of the next set is performed through the same steps as described above. In the process, after all the sheaves 30 of the sheave layer 31 to be used for measurement are transferred from the sheave table 10 to the electronic balance 11, cleaning of the sheave layer 31 after weighing is simultaneously performed.

The sheave cleaning procedure is as follows. First, the sheave table 10 is rotated to set the weighed sheave layer 31 at a predetermined position, and the robot arm 26 is driven to move the sheave 30 in the uppermost layer of the sheave layer 31 to the arm 47. Then, it is clamped by the gripping member 51 and rises to move to a predetermined cleaning position. Next, the duct pipe 24 swings to horizontally move the bottomed cylindrical suction port 23 and position it below the sheave 30 supported at the cleaning position. Then, as shown in FIG. 8, the grip member 51 of the robot arm 26 is rotated to rotate the sheave.
When 30 is inverted, the powder and granules accumulated in the sheave 30 are dropped into the suction port 23. Next, the arm 22 is swung to move the cleaning brush 21 horizontally and position it on the inverted sheave 30 as shown in FIG. 9, and the cleaning brush 21 is repeatedly swung forward and backward, and at the same time from the lower suction port 23. Make a suction.

The inverted sheave 30 is wiped off the upper surface of the net 30b by the cleaning brush 21 to remove the powder and granules clogging the net, and the turning of the cleaning brush 21 causes the hammer 69 to sheave.
Since the frame 30a of 30 is struck from the side, powder particles attached to the net or the inner surface of the frame are dropped, and the sheave 30 is completely cleaned by the downward suction function. Since the dropped particles are sent from the suction port 23 to the rear of the back wall via the duct pipe 24, the particles are not scattered in the working space in the casing 2.

When the cleaning of one sheave 30 is completed in this way, the cleaning brush 21 and the suction port 23 are horizontally moved to return to the original position, and the robot arm 26 reverses the sheave 30 and moves further upward from the cleaning position. Then, as shown in FIG. 10, the sheave 30 is moved to support the grip plates 27 and 28 of the temporary holding mechanism 75. Then, the robot arm 26 goes to pick up the next sheave 30, which is the uppermost layer of the sheave layer 31 placed on the sheave table 10, moves the sheave 30 to the cleaning position again, and the same cleaning as described above is performed.

The sheave 30 that has been cleaned is first temporarily held.
The sheave 30 is gripped by the grip plates 27 and 28 of 75, and is supported by the temporary holding mechanism 75. In this way, the sheaves 30 are sequentially cleaned and sequentially stacked and supported by the temporary holding mechanism 75 from the bottom, and the final sheave 30 is positioned below the sheave layer supported by the temporary holding mechanism 75 after cleaning and is temporarily held. When the sheave layer is released by opening the grip plates 27 and 28 of 75, the sheave layer is superposed on the last sheave 30, and is supported by the robot arm 26. Then, the completely cleaned sheave layer 31 is placed at a predetermined position on the sheave table 10 by the robot arm 26, and the cleaning is completed.

During the above cleaning process, sieving and weighing of other sheave layers are carried out, and the measurement of a plurality of particles to be weighed is sequentially and efficiently carried out simultaneously, and a fully automatic sieving including cleaning of the sheave is carried out. Measurement can be performed.

[0050]

Industrial Applicability According to the present invention, by picking up from the sheave in the upper layer of the sheave layer after weighing and reversing the sheave with the suction port of the suction means positioned below, the powder or granular material accumulated in the sheave is removed. Most of it is dropped, and when the sheave is turned over, a brush is applied from above to the mesh of the sheave and it is rotated, and at the same time the suction means is driven, so that the powder and granules clogged in the mesh of the sheave are also removed by the brush and sucked into the suction port. The powder and granules are reliably removed, and the sheave is efficiently cleaned.

Further, the robot arm grips the sheave, sets it at a predetermined cleaning position, and reverses the sheave with the suction port of the suction means positioned below, so that most of the powder particles accumulated in the sheave are removed. A brush is applied from above to the mesh of the sheave that has been dropped and turned upside down, and by rotating the brush by the brush drive means, it is possible to remove the powder and granules clogged in the mesh of the sheave, and by driving the suction means below. As the powder is sucked, it is possible to reliably remove the powder and granules, and to perform complete cleaning automatically. Since it is possible to incorporate both into the automatic sieving measurement device and operate them simultaneously,
A plurality of particles to be weighed can be continuously and efficiently measured, and a fully automatic sieving measurement device including cleaning of the sheave can be realized.

[Brief description of drawings]

FIG. 1 is an external view of an automatic sieving measurement device according to an embodiment of the present invention.

FIG. 2 is a front view of the automatic sieving measurement device showing an internal space by opening a door with a window.

FIG. 3 is a schematic configuration diagram of a suction mechanism.

FIG. 4 is a cross-sectional view showing a sheave layer in an exploded manner.

FIG. 5 is a cross-sectional view of a sheave layer.

FIG. 6 is a partial perspective view of the automatic sieving measurement device showing the sampler mechanism by opening the sampler door.

FIG. 7 is a perspective view of a robot arm.

FIG. 8 is a perspective view of relevant parts showing a state during sheave inversion.

FIG. 9 is a perspective view of relevant parts showing a state during sheave cleaning by rotating the cleaning brush and driving a suction mechanism.

FIG. 10 is a perspective view of essential parts showing a state in which support of the sheave is transferred from the robot arm to the temporary holding mechanism.

FIG. 11 is a view of the temporary holding mechanism as viewed from above.

FIG. 12 is a schematic block diagram of a control system of this embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic sieving measuring device, 2 ... Casing, 3 ... Door with window, 4 ... Operation display panel, 5 ... Printer, 6 ... Sampler door, 10 ... Sieve stand, 11 ... Electronic balance, 12 ... Sample inlet, 15 … Sieving mechanism, 16… Lower part, 17
… Upper pressing part, 18… Horizontal pulse device, 20… Sieve cleaning mechanism, 21… Cleaning brush, 22… Horizontal swing arm, 23…
Suction port, 24 ... Duct pipe, 25 ... Spiral rod, 26 ... Robot arm, 27 ... Spiral rod, 28 ... Robot arm, 30 ... Sheave, 31 ...
Sheave layer, 35 ... Sampler mechanism, 36 ... Disc, 37 ... Rotating shaft, 38 ... Sample cup, 39 ... Gear, 40 ... Rack, 41 ...
Hammer, 45 ... Lifting support member, 46 ... Swing support member, 47, 48
... Arm member, 49 ... Motor, 50 ... Rubber protrusion, 51 ... Gripping member, 52 ... Rotating shaft, 53 ... Pulley, 54 ... Motor, 55 ... Pulley, 56 ... Belt, 57 ... Disc, 58 ... Limit switch, 59
… Belt, 60… Brush rotation motor, 61… Rotation axis, 62…
Bracket, 63 ... Support shaft, 64 ... Plate cam, 65 ... Bearing member, 66
… Axis, 67… Swing member, 68… Leaf spring, 69… Hammer, 70
… Support shaft, 71… Roller, 72… Spring, 75… Temporary holding mechanism, 76… Circular opening, 77, 78… Grip plate, 79… Base, 80, 81…
Arm, 90 ... Suction mechanism, 91 ... Duct tube, 92 ... Hose, 93
… Cyclone, 94… Hose, 95… Dust collector, 96… Hose,
97 ... Blower, 100 ... Microcomputer, 101 ... Input switches, 102 ... Various sensors.

Claims (4)

(57) [Claims] 1. A method of cleaning each sheave of a sheave layer obtained by sieving a granular material according to a particle size, wherein the uppermost sheave of the weighed sheave layer placed at a predetermined position is measured.
A sheave setting step of gripping and moving to a predetermined cleaning position; a sheave reversing step of reversing the sheave gripped with the suction port of the suction means positioned below the mesh of the sheave at the cleaning position; A sheave cleaning method comprising: a cleaning step of applying a brush from above to the mesh and driving the suction means at the same time to clean the sheave; and a moving step of moving the cleaned sheave to a predetermined position. . 2. The sheave cleaning method according to claim 1, wherein the moving step includes a temporary holding step of sequentially overlapping and temporarily holding the cleaned sheaves. 3. An apparatus for cleaning each sheave of a sheave layer obtained by sieving a powder or granular material according to a particle size, wherein an uppermost sheave of the weighed sheave layer placed at a predetermined position is measured.
A robot arm that grips and moves to a predetermined cleaning position and reverses the gripped sheave, a brush drive unit that applies a brush from above to the mesh of the sheave that has reversed the predetermined cleaning position, and rotates the brush. A sheave cleaning device comprising: a suction means for locating a suction port below the mesh of the inverted sheave, and a control means for controlling the robot arm, the brush driving means and the suction means. . 4. The sheave cleaning device according to claim 3, further comprising a temporary holding means for sequentially and temporarily holding the cleaned sheaves, wherein the temporary holding means is controlled by the control means.