JPH09297048A - Metering supply device for granular body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the supply quantity of granular body or adjust finely it by making the volume of a metering chamber variable in such a device that the metering chamber is provided to a grinding plate capable of rotation indexing on the horizontal plane and the granular body in the metering chamber is metered through grinding after the metering chamber is filled with granular body supplied from a hopper, and the granular body is supplied to a specified container. SOLUTION: A grinding plate comprises a grinding lower plate 8 having a lower metering chamber 8A and a grinding upper plate 18 having an upper metering chamber 18A, and an adjust nut 16 is turned to move the grinding upper plate 18 vertically that is fixed on the lower surface of a slide 14, and further the upper metering chamber 18A with which a projecting cylindrical part is engaged as to enter the lower metering chamber 8A is adjusted for its vertical position thereby. Thus, the supply volume of granular body to a container 41 can be changed or adjusted finely by changing the volume of of the lower metering chamber 8A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the amount of powder or granular material supplied from a hopper into a fixed volume and supplying the same to a container.

[0002]

2. Description of the Related Art Conventionally, a method for measuring and supplying a granular material to a container is to supply the granular material supplied from a hopper to a measuring chamber provided on a sliding plate that can rotate or move straight on a horizontal plane.
There is a method in which a fixed amount is measured by a scraping action by rotation or a rectilinear movement of a slide plate and is supplied to a container. As a prior art using this method, a technique known from Japanese Utility Model Publication No. 42-7431. There is.

As shown in FIG. 9, this is one in which a large number of holes are formed in a tongue table 101 to fill the powder or granular material in the hopper 102 into a measuring tank 103, and the upper inlet of the measuring tank 103 has a relatively small diameter. On the contrary, the lower bottom portion has a large diameter and is tapered in the middle, and the shutter 104 that can be opened and closed is attached to the lower bottom portion. The width is narrowed to reduce the measurement error, and a certain amount of powder or granules is supplied to the container through the guide 105.

[0004]

In the prior art of Japanese Utility Model Publication No. 42-7431 mentioned in the prior art, the scraping surface is made as small as possible so as to be flat and the measuring difference is reduced. When changing the supply amount, the measuring tank 10
3 had to be replaced, and there was the problem that a great deal of time was required for the setup replacement for that purpose. In addition, even if a certain amount is scraped off and measured, the shape and size of the particles of the granular material change, or the difference in the inflow pressure into the measuring tank 103 due to the change in the storage amount of the granular material in the hopper 102. There was a problem that it was not possible to cope with minute changes in the supply amount.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to easily change the amount of powder or granular material to be supplied to a container in a measuring chamber. The volume can be adjusted, and the temporary specific gravity changes due to the difference in the size and shape of the particles depending on the manufacturing lot of powder and granules, and the change in the storage volume in the hopper causes the difference in the inflow pressure to the measuring chamber, etc. An object of the present invention is to provide a powder and granular material metering / supplying device that can be adjusted in response to minute changes in the supply amount.

[0006]

Means for Solving the Problems A powder and granular material metering and feeding device of the present invention comprises a plurality of fixed volumes provided at equal intervals on the outer circumference of a slidable plate capable of swivel indexing on a horizontal plane. After filling the weighing chamber with powder and granules sequentially supplied from the hopper, the slidable action between the upper surface side and the lower surface side of the weighing chamber by the rotation of the sliding plate causes the powder and granular material in the weighing chamber to have a constant volume. In the device for measuring and supplying to a container, the slide-cutting lower plate member having a plurality of lower measuring chambers which are divided into two pieces and which vertically penetrate through the outer peripheral portion at equal intervals on the circumference, Cylindrical portions provided on the slide-cut lower plate member so as to be rotatable and vertically movable integrally with the slide-cut lower plate member and protruding from the lower surface are slidably inserted into the plurality of lower weighing chambers, respectively. A slidable upper plate member having an upper measuring chamber penetrating substantially perpendicularly to the center of the cylindrical portion, and the slidable lower plate member. Means for adjusting the vertical position of the slide-cut upper plate member with respect to the slide-cut lower plate member, and means for pivotally indexing the slide-cut plate composed of the slide-cut lower plate member and the slide-cut upper plate member. By changing the vertical position of the sliding upper plate member with respect to the member, the volume of the lower measuring chamber is made variable.

Further, the means for adjusting the vertical position of the slide-cut upper plate member is only capable of vertical movement on the feed screw at the upper end of the guide shaft portion provided at the center of the slide-cut lower plate member and the outer periphery of the guide shaft portion. And an adjusting nut that holds a slide portion provided on the slide-cut upper plate member and is rotatable by being screwed with the feed screw.

According to the powder and granular material supply device of the first and second aspects, the slidable plate capable of swivel indexing in the horizontal plane can be moved only up and down on the slidable lower plate member and the slidable lower plate member. Sliding-cutting upper plate member, and a sliding-cutting upper plate member having an upper measuring chamber at the center of a cylindrical portion slidably fitted in a plurality of lower measuring chambers on the outer periphery of the sliding-cut lower plate member. Since the volume of the lower measuring chamber is changed by moving the member up and down, for example, if the supply amount to the container is changed or if the supply amount needs to be finely adjusted, simply rotate the adjustment nut. It becomes possible to adjust by simple operation.

According to a third aspect of the present invention, there is provided a servomotor for rotating the adjusting nut to vertically move the sliding upper plate member, and a control means for controlling the amount of rotation of the servomotor. Is compared with the specified weight that is stored in advance, and if the specified weight is excessive or insufficient, the amount of displacement of the height of the lower weighing chamber is calculated from the weight difference between the specified weight and the measured weight. That is, since the amount of movement of the vertical position of the slide-cut upper plate member with respect to the slide-cut lower plate member is obtained, the weighing volume consisting of the upper weighing chamber and the lower weighing chamber is constantly corrected so as to approach the specified weight. It becomes a highly accurate fully automatic metering device for powder and granular material.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A metering and feeding device for powder and granular material of the present invention will be described below with reference to the drawings. Example 1 is a manually-adjustable metering device for powder and granular material, FIG. 1 is a top view of the entire metering and supplying device, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is B of FIG.
-B arrow line sectional view, FIG. 4 is a CC line sectional view of FIG.
5 is a sectional view taken along the line D-D of FIG. 1, and FIG. 6 is an enlarged view of a main part of FIG.

2 and 6, a table 3 is horizontally fixed on an upper plate of a frame 1 installed on the floor via a plurality of columns 2 and 2. The table 3 has a through hole 3a vertically formed substantially in the center thereof.
An annular sliding reference base 4 is fixed on the upper side of the through hole 3a concentrically. On the other hand, an indexing drive device 5 is fixed to the lower surface of the table 3, the output shaft 5a of the indexing drive device 5 projects vertically upward from the through hole 3a, and the indexing drive device 5 is not driven. Belt 6, pulley 7 by motor
The output shaft 5a is sequentially indexed by ¼ rotation intermittently.

On the slide-cutting reference base 4, a disc-shaped slide-cut lower plate 8 is slidably and concentrically provided, and a central lower portion of the slide-cut lower plate 8 has a torque limiter 11 on the output shaft 5a. Are connected through. The torque limiter 11 is a well-known ball notch type that interrupts power transmission when a certain load or more is applied. Further, the guide shaft 1 is provided above the center of the sliding lower plate 8.
2 is fixed together with the torque limiter 11 by a plurality of bolts, and a feed screw 13 is integrally and concentrically provided on the upper end of the guide shaft 12.

Through-holes are vertically formed in the outer peripheral portion of the slide-cutting lower plate 8 that abuts against the slide-cutting reference base 4 at equal intervals on the circumference of the circle. A cylindrical lower measuring sleeve 9 formed on 8A is inserted so as to be flush with the upper and lower surfaces of the slide-cutting lower plate 8, and the upper surface 4a of the slide-cutting reference base 4 and the slide-cutting lower plate 8 are attached. The lower sliding surface is formed between the lower surface 8a and the lower surface 8a.

Further, a cup-shaped slide 14 is fitted on the outer periphery of the guide shaft 12 via a key 15 so as to be movable only in the vertical position, and comprises a female screw portion 16A screwed to the feed screw 13 and a grip portion 16B. An adjustment nut 16 is provided. The upper center hole 14a of the slide 14 is rotatably supported by the outer peripheral groove on the lower side of the adjusting nut 16, and when the adjusting nut 16 is rotated, the slide 1 is moved.
4 is designed to move up and down, and the feed screw 13
A lock nut 17 is screwed onto the upper end of the.

A slide-cut upper plate 18 is concentrically fixed to the lower surface of the slide 14 by a plurality of bolts, and the slide-cut upper plate 18 has a plurality of through holes in the outer periphery thereof on the circumference concentrically with the lower measuring chamber. The flange portion of the upper measuring sleeve 19 with a collar, which is formed at equal intervals and has a center hole formed in the upper measuring chamber 18A, is inserted into the through hole, and the lower portion of the upper measuring sleeve 19 is The cylindrical portion 19a on the side projects from the lower surface of the sliding upper plate 18 and is inserted into the lower measuring chamber 8A so as to be movable in the axial direction.

Therefore, the cylindrical portion 19 is formed together with the sliding upper plate 18.
When a moves to the upper position, the volume of the lower measuring chamber 8A increases, and when it moves to the lower position, the lower measuring chamber 8A moves.
The volume of A is reduced, and the cylindrical portion 19
If the position of the lower end surface of a is set to be the same as the upper surface of the slide-cut lower plate 8, the volume of the lower measuring chamber 8A becomes maximum, and the cylindrical portion 19a
If the position of the lower end surface of the
The volume of can be minimized. The volume of the granules when being weighed is defined by the total volume of the upper volume of the constant volume 18 and the lower volume of the variable volume 8A.

Since the slide-cut lower plate 8 and the slide-cut upper plate 18 have the above-mentioned two-piece structure, the slide drive lower plate 8 and
The lower weighing chamber 8A and the upper weighing chamber 18A (hereinafter, referred to as upper and lower weighing chambers 18A, 8A) of a pair are pivot centers of the sliding lower plate 8 and the sliding upper plate 18 on the orthogonal axis shown in FIG. Indexing and positioning are performed in sequence at four equal positions (first station a to fourth station d) at equal distances. Then, at the position of the first station a on the table 3, the hopper 21 for storing the granular material is indexed and positioned at the position of the first station a via the support arm 22A and the stand 22B, and the upper / lower weighing chamber 18A, 8A, the nozzle 23 is vertically movable at the lower end of the cylindrical portion 21a below the hopper 21, and is constantly slidably pressed by the spring 24 against the upper surface 18b of the upper measuring sleeve 19. Lower end surface 23a of 23 and upper surface 1 of sliding upper plate 18
A space between 8b is formed on the upper surface.

Further, on the table 3, there are upper and lower weighing chambers 18
The filling detector 25 for detecting whether the powder or granular material filled in A or 8A is filled up to the upper cut surface, the contact pin 26 described later is positioned at the second station b position. It is provided so as to be concentric with the chambers 18A and 8A. As shown in FIGS. 3 and 4, the filling detector 25 is pneumatically driven to a stand 27 standing on the table 3 and to a vertical linear guide portion 29A of a linear slide 29 fixed via a support arm 28. Is fixed downward on a slide portion 29B that is movably provided by means of an L-shaped metal fitting 31A.

In the filling detector 25, a contact pin 26 which comes into contact with the powder particles in the upper and lower measuring chambers 18A and 8A is vertically movable below the L-shaped metal fitting 31A and is always protruded downward by a spring 20. The linear gauge 34 is vertically and downwardly attached to the upper side of the L-shaped metal fitting 31A via the holder 31B so that the tip of the measuring shaft 34a of the linear gauge 34 always contacts the upper end surface of the contact pin 26. Touching.

As the linear gauge 34, a dial gauge having two commercially available electric contacts is used.
At the lower end position of 9B, the lower end surface 26a of the contact pin 26 hits the granular material accurately filled up to the upper scraping surface in the upper and lower measuring chambers 18A and 8A positioned at the second station b position. When the contact is made, the reference zero is set, and the filling failure signal is adjusted to be output at a position above or below the allowable error.

Incidentally, the linear guide portion 29 of the linear slide 29.
Proximity switches LS1 and LS2 for detecting the vertical position of the slide portion 29B are attached to the side of A, and only when the filling detector 25 is at the upper limit position and a signal is output from the proximity switch LS1. The lower cutting plate 8 and the upper sliding cutting plate 18 can be swung, and are interlocked when the filling detector 25 is at the lower limit position and a signal is output from the proximity switch LS2, and the lower sliding cutting plate 8 and the sliding cutting upper plate 18 are slid. The plate 18 is not allowed to turn. Then, when a signal indicating that the filling is defective is output from the linear gauge 34, an action of discharging the powder or granular material that is defective in filling, which will be described later in detail, is performed.

Further, as shown in FIGS. 2 and 6, on the table 3, an air cylinder 33 for pushing out the granular material is provided via a stand 30B and a supporting arm 30A, and a third station c.
It is vertically and downwardly attached so as to be concentric with the upper and lower weighing chambers 18A and 8A positioned at the upper and lower weighing chambers, and is indexed and positioned at the third station c position at the third station c position. Sliding reference base 4 and table 3 for introducing the powder or granules in the chambers 18A, 8A into a container 41 described later.
Passageways 4b and 3b are vertically formed through the pipe, and a supply pipe 40 communicating with the passages 4b and 3b is vertically and downwardly fixed to the lower surface of the table 3.

Further, a slot groove 4c for slidingly guiding a supply portion shutter 35, which will be described later, is radially formed on the sliding reference base 4 at a position of the third station c, and a flat plate is provided in the slot groove 4c. The supply shutter 35 is provided so as to be horizontally movable. The supply shutter 35 is an air cylinder 36 that is horizontally fixed on the table 3 via a liner.
The shutter hole 35a is normally moved by
It is on standby in a state of being concentric with b and 3b, that is, a state in which the tip end portion of the piston rod 33a of the air cylinder 33 for pushing out the granular material can be inserted.

When a defective filling signal is output from the linear gauge 34 of the filling detector 25 at the position of the second station b, the supply shutter 35 moves backward when the upper and lower slide cutting plates 18, 8 are indexed. The space between the measuring chamber 8A and the flow path 4b is closed to prevent the powder or granules having a poor filling from being discharged to the supply pipe 40, and the piston rod 33 of the air cylinder 33 is also provided.
The pushing operation of the powder or granular material by a is not performed.

A container carrying conveyor 37 is installed under the third station c on the frame 1, and a container 41 is inserted into and removed from the endless conveyor belt 38 provided on the container carrying conveyor 37. A plurality of container holders 39 that can be mounted are fixed at equal intervals in the circumferential direction, and are supplied in synchronization with the indexing of the slide-cut lower plate 8 and the slide-cut upper plate 18 by a conveyor driving motor (not shown). The container 41 mounted on the container holder 39 is positioned directly below the pipe 40.

Further, a movable pipe 43 is attached to the lower surface of the table 3 so as to be movable in the axial direction around the supply pipe 40.
Is vertically moved by a vertically fixed air cylinder 45 in synchronization with the positioning of the container holder 39 to the supply position,
When the container 41 is positioned directly below the supply pipe 40, the moving pipe 43 descends so that the lower end thereof enters below the upper end of the container 41 and prevents the granular material from spilling out of the container 41. Has become.

Further, as shown in FIG. 5, on the table 3, there is provided an air cylinder 47 which pushes out the powder or granular material which is not filled well through the stand 49 and the supporting arm 46.
Upper and lower weighing chambers 18A and 8A indexed and positioned
Flow paths 4d and 3d for introducing powder particles are provided at the fourth station d position of the sliding reference base 4 and the table 3 concentrically and vertically.

A discharge pipe 48 communicating with the flow paths 4d and 3d is provided so as to open downward from the hole 1b of the frame 1, and a filling failure signal of the filling detector 25 is output at the position of the second station b. Upper and lower weighing chambers 1 filled with powder particles that are not properly filled when they come out of the linear gauge 34
When 8A and 8A are indexed and positioned at the fourth station d position, the piston rod 47a of the air cylinder 47
Is descending and pushing out the granular material. It should be noted that there is no problem with the extrusion of the powder or granular material having the poor filling by the air cylinder 47, regardless of the poor filling signal, even if the pushing is performed every 1/4 indexing.

Next, the operation of the first embodiment will be described.
First, prepare a granular material having a weight to be supplied to one container 41, and manually fill the upper and lower measuring chambers 18A and 8A so that the upper surface of the granular material is flush with the upper scraping surface. The adjustment nut 16 is pivotally adjusted to adjust the vertical position of the slide-cut upper plate 18 with respect to the slide-cut lower plate 8, and the upper and lower measuring chambers 18A, 8
Determine the volume of A. Next, the filling detector 25 at the position of the second station b is lowered, the lower end surface of the contact pin 26 is brought into contact with the upper surface of the granular material filled in the upper / lower measuring chambers 18A, 8A, and the reference point of the linear gauge 34 ( (Zero point) and adjust so that a defective filling signal is output with a minimum amount that is smaller than the reference point by the allowable error amount and a maximum amount that is larger than the reference error amount, and then put the granular material into the hopper 21 and start continuous operation. .

When the continuous operation is started, the upper and lower measuring chambers 18A, 8 indexed and positioned at the first station a position.
Granules are filled in A by the hopper 21 by its own weight, and continue 1
The upper and lower measuring chambers 18A, 8A filled with the powder particles that are uniformly weighed by performing the sliding action of the upper and lower sliding faces by the turning of / 4 (90 °) index are the second It is indexed and positioned at the station b position. In this 1/4 indexing, at the same time, the next empty upper / lower weighing chambers 18A, 8A on the rear side in the turning direction are indexed and positioned at the first station a position.

When indexing is completed, at the position of the second station b, the filling detector 25 waiting at the upper limit position is lowered, and the granular materials in the upper and lower weighing chambers 18A and 8A are accurately moved to the upper scraping surface. If the powder and granules are out of the permissible error range and the filling amount is excessive or insufficient,
Outputs a filling failure signal. At this time, the first station a
The powder particles in the hopper 21 are filled in the empty upper and lower measuring chambers 18A and 8A that are indexed to the positions.

When the filling inspection at the position of the second station b is passed, the upper and lower measuring chambers 18A and 8A filled with the inspected powder and granules are indexed to the position of the third station c. Immediately before, air is supplied to the upper chamber of the air cylinder 45, the moving pipe 43 descends, and the lower end of the moving pipe 43 enters the mouth of the container 41 on standby on the container transporting conveyor 37. Then, when the indexing positioning is completed, air is supplied to the upper chamber of the air cylinder 33, and the piston rod 33d causes the upper / lower measuring chamber 18A,
The granular material filled in 8A is extruded, and the granular material is supplied into the container 4 through the supply pipe 40 and the moving pipe 43. At this time, the filling inspection is performed at the position of the second station b, and the powder particles from the hopper 21 are simultaneously filled at the position of the first station a.

Next, while the upper and lower weighing chambers 18A and 8A that have become empty at the position of the third station c are being indexed to the fourth station d, the container transporting conveyor 37 is sent one step and the next step is performed. The container 41 is positioned directly below the position of the third station c. The action at the position of the fourth station d is not performed when the filling inspection has passed, and after the elapse of the set time, the position is indexed to the position of the first station a, which is the starting point, and one cycle is completed.

Then, after the above-mentioned four operations of filling the upper / lower weighing chambers 18A and 8A from the hopper 21, filling inspection, supplying to the container 41, and defective discharge are performed 4 to 6 times, the machine is stopped. Then, the actual weight of the powder or granular material automatically supplied to the container 41 is measured, and if there is an excess or deficiency, the adjustment nut 16 is finely adjusted so that the weight becomes a specified weight, and the upper and lower measuring chambers 18
Finely adjust the volume of A and 8A and start continuous operation again. In this way, the fine adjustment is repeated until the weight of the granular material in the container 41 reaches the specified weight, and it is confirmed that the specified weight is reached, and the continuous operation production is started.

At the position of the second station b, if there is an excess or deficiency in the filling amount of the powder or granular material filled in the upper / lower measuring chambers 18A, 8A, for example, this filling failure
Immediately before the lower metering chambers 18A and 8A are indexed to the position of the third station c, the supply shutter 35 is retracted to close the space between the lower metering chamber 8A and the flow path 4b, and the granular material is placed at the position of the third station c. Is not supplied to the container 41.

When the upper and lower measuring chambers 18A and 8A of this defective filling are indexed and positioned at the position of the fourth station d, air is supplied to the upper chamber of the air cylinder 47 and the piston rod 47a descends. Upper / lower weighing chamber 18A, 8
Poorly filled powder or granular material in A is pushed out and collected in a collecting box (not shown) through the discharge pipe 48.

The second embodiment is a powdery and granular material metering and feeding device capable of automatically correcting the supply capacity of the powdery and granular material, and since there are many structurally the same parts as the first embodiment, the same parts are designated by the same reference numerals. The explanation will be omitted or simplified, and different points will be mainly explained.

FIG. 7 is an enlarged view of a main part of the metering and feeding apparatus of the second embodiment, which can be vertically moved to the lower end of the cylindrical portion 21a below the hopper 21 provided at the position of the first station a (see FIG. 1). The arm portion 23A is integrally formed with the nozzle 23 which is fitted to the nozzle 23 and is constantly urged downward by the spring 24, and the guide bar 50 is erected on the table 3.
The nozzle 23 is vertically moved by using the cylindrical portion 21a of the hopper 21 and the guide bar 50 as a guide, and is constantly slid through the filling portion shutter 51, which will be described later, by the urging force of the spring 24.
The upper surface 18b is pressed.

The lower end surface of the nozzle 33 is provided with a slit groove that radially guides the filling portion shutter 51, which will be described later, with respect to the center of rotation of the slide upper plate 18, and the slit groove is formed. The upper and lower surfaces of the plate-shaped filling portion shutter 51 are provided inside thereof so as to be horizontally movable smoothly without a gap. A shutter hole 51a is vertically formed substantially in the center of the filling portion shutter 51, and the shutter hole 51a is indexed and positioned at the position of the first station a by an air cylinder 52 fixed horizontally to the arm portion 23A. The upper and lower measuring chambers 18A and 8A are moved substantially concentrically (shutter open) to a retracted retracted position.

Further, a servomotor 54 with a speed reduction mechanism 55 is fixed via a motor mount 53 on the cup-shaped slide 14 to which the slide upper plate 18 is fixed on the lower end surface, and the speed reduction mechanism 55 is attached. A pinion 56 is integrally formed with the output shaft 55a of the. A gear 57, which is integrally formed on the outer periphery of an adjust nut 60 having an internal thread to be screwed with the feed screw 13, and the pinion 56 are meshed with each other, so that the slide upper plate 18 can be moved up and down by NC control. It has become. The other points are the same as those in the first embodiment.

Next, the operation of the second embodiment will be described in the order of the flowchart of FIG. In order to make the explanation easy to understand, this flow chart shows upper and lower weighing chambers 18A at four locations on the circumference of the slide-cutting lower plate 8 and the slide-cutting upper plate 18 which rotate integrally.
It is described that one portion of 8A is sequentially and continuously indexed from the first station a to the fourth station d shown in FIG. However, in reality, the upper and lower position chambers 18A and 8A at four locations are indexed at the same time and a quarter (90)
°) A powder or granular material is supplied to the container 41 for each indexing.

In step S1, when the continuous operation start switch of the metering and feeding device is turned on, the time of the weight measurement timing from the start of the granular material in the container 41 or the previous weight measurement to the next weight measurement is set in advance. The timer being reset is reset to zero, the filling section shutter 51 at the position of the first station a is opened in step S2, and the granular material in the hopper 21 can be filled and supplied into the upper and lower weighing chambers 18A and 8A. Then, at the same time, the supply unit shutter 35 at the position of the third station c is opened, and it waits in this state until a filling failure signal that fails the filling inspection is output.

Next, in step S3, the upper and lower measuring chambers 18A, 8 indexed to the position of the first station a.
A is filled with the granular material from the hopper 21, and in step S4, the slide-cutting lower plate 8 and the slide-cutting upper plate 18 (simply referred to as slide-cutting plates in this flowchart) are swung for one step, that is, 90 °. When starting, the upper and lower weighing chambers 18A and 8A filled with the granular material are slid and weighed by the upper and lower sliding surfaces, and the upper and lower weighing chambers 1
8A and 8A are indexed to the position of the second station b.

In step S5, the filling detector 25 standing by at the upper limit position is lowered and the lower end surface 2 of the contact pin 26 is lowered.
6a comes into contact with the upper surface of the powder or granular material filled in the upper / lower measuring chambers 18A and 8A, and it is confirmed whether or not the filling error signal is output from the linear gauge 34, that is, whether the powder or granular material is excessive or insufficient, and YES. In this case, in step S6, the supply section shutter 35 at the position of the third station c is kept open, and in step S7, the slide-cut upper plate 18 and the slide-cut lower plate 8 are swung one step to complete the filling inspection. The upper and lower weighing chambers 18A and 8A are indexed to the position of the third station c.

In step S8, immediately before the indexing to the position of the third station c is completed, the moving pipe 43 descends and the lower end portion enters the container 41, and at the same time as the indexing positioning is completed, the piston rod 33a of the air cylinder 33 is completed.
Descends and pushes out the granular material from the upper / lower measuring chambers 18A, 8A, and the flow paths 4b, 3b, the supply pipe 40, the moving pipe 4
3 and is supplied to the container 41.

Then, after the moving pipe 43 and the piston rod 33a have respectively returned to the upper limit standby positions, in step S9, the slide-cut upper plate 18 and the slide-cut lower plate 8 rotate one step, and the third station c position is reached. The upper and lower weighing chambers 18A and 8A that have been emptied at are indexed to the position of the fourth station d, and at the same time, in step S10, the container transport conveyor 37 moves the next container 41 to the position immediately below the position of the third station c. And be positioned.

Next, in step S11, it is confirmed whether or not the timer has reached the set time of the weight measurement timing, and NO.
In the case of, the flow goes to step S15, and the slide-cut upper plate 18 and slide-cut lower plate 8 swivel by one step, and the empty upper / lower weighing chamber 1
8A and 8A are indexed to the position of the first station a. Then, in step S16, it is confirmed whether or not the automatic operation stop command is issued, and if YES, the process ends, and N
If it is O, the process returns to step S2.

The above is the one-cycle operation when the filling inspection during the continuous operation has passed and the timer setting time has not been reached. For example, in step S5, when the result of the filling inspection is NO, in step S17, The supply unit shutter 35 at the position of the third station c is closed, and in step S18, the slide-cutting upper plate 18 and the slide-cutting lower plate 8 swivel by one step, and the upper / lower weighing containing the unfilled powder or granular material is performed. The chambers 18A and 8A are indexed to the position of the third station c. However, in step S19, since the supply unit shutter 35 is closed, the powder or granular material does not drop, and the piston rod 33a of the air cylinder 33 is not lowered, so the powder or granular material is not supplied to the container 41.

In step S20, the slide-cutting upper plate 18 and the slide-cutting lower plate 8 are rotated by one step so that the upper and lower measuring chambers 18A and 8A containing the defectively-filled powder particles are located at the position d of the fourth station. Then, in step S21, the supply unit shutter 35 at the position of the third station position c is opened. Next, in step S22, the piston rod 47a of the air cylinder 47 at the position of the fourth station d is lowered to push out the powder or granules which are not properly filled, and the discharge pipe 4
After that, the powder is discharged to a not-shown powder / granular recovery box, and in step S23, the slide-cut upper plate 18 and slide-cut lower plate 8 are turned by one step, indexed to the position of the first station a, and returned to step S3. Be done.

Further, for example, when the timer reaches the set time of the weight measurement timing in step S11, the timer is reset to zero in step S12, and the powder supplied to the container 41 in step S13. The weight of the granules is measured by a weight measuring means (not shown), and it is confirmed in step S14 whether or not the weight of the granules is equal to the specified value. If YES, the process proceeds to step S15 described above,
If NO, in step S24, N (not shown)
The upper and lower weighing chambers 18 can be determined from the excess and deficiency weight values with respect to the specified weight value of the granular material by the data storage unit and the calculation unit of the C device.
Sliding top plate 1 to make A and 8A correspond to the specified and weight values
The vertical correction movement amount of 8A is calculated and stored, and at the same time, in step S25, the filling section shutter 51 at the position of the first station a is closed.

Next, in step S26, the slide-cut upper plate 18 and the slide-cut lower plate 8 are moved in 4 steps, that is, 90 ° by 4 °.
After turning and indexing, all the granular materials in the upper and lower weighing chambers 18A and 8A are discharged into the collection box at the position of the third station d and emptied, and then in step S27, a storage unit of an NC device (not shown). Output the correction value from step S
At 28, the servomotor 54 is rotationally controlled by the control unit of the NC device (not shown) to correct the vertical position of the slide-cut upper plate 18 with respect to the slide-cut lower plate 8, that is, the volume of the upper and lower measuring chambers 18A, 8a. To do. Then, in step S29,
The filling section shutter 51 is opened, and the process returns to step S15 to repeat the operations of filling the granular material at the positions of the stations a to d, the filling inspection, the supply to the container 41, and the defective discharge.

The adjustment of the position of the filling failure signal of the linear gauge 34 provided at the position of the second station b is automatically corrected at the same time as the vertical position of the slide upper plate 18 is corrected. However, if only a relatively large weighing change is detected, such as when the stored particles in the hopper are gone, or when foreign matter enters the scraping surface and the scraping weighing is disturbed, correction is performed when only relatively large weighing changes are detected. do not have to.

[0052]

EFFECTS OF THE INVENTION Since the metering and feeding device for powder and granular material of the present invention is configured as described above, it has the following effects. A sliding cutting plate capable of swivel indexing in a horizontal plane is composed of two pieces of a sliding cutting lower plate member and a sliding cutting upper plate member, and the sliding cutting upper plate member can be vertically moved with respect to the sliding cutting lower plate member, Since the volume of the measuring chamber consisting of the lower measuring chamber of the slide-cut lower plate member and the upper measuring chamber of the slide-cut upper plate member is variable, it is necessary to change the supply amount to the container or to finely adjust the supply amount. In such a case, it is possible to easily cope with such cases, and the time required for setup change or the time required for fine adjustment can be greatly shortened as compared with the conventional method of converting the measuring chamber. In addition, it is possible to continuously meter and supply the number of indexes by one turn of the slide-cut upper plate member and the slide-cut lower plate member, and the efficiency is greatly improved.

Further, the sliding upper plate member is moved up and down by an NC control servo motor, and the weight of the powder or granular material supplied to the container is measured at regular time intervals, and the difference from the predetermined weight stored in advance is measured. Since the vertical movement amount of the slidable upper plate member is calculated from this, the weight of the granular material in the container is corrected so as to approach the specified weight. It becomes the measuring and feeding device of.

[Brief description of drawings]

FIG. 1 is a top view of the entire metering and feeding device according to a first embodiment.

FIG. 2 is a front sectional view as seen from the direction of arrows AA in FIG.

FIG. 3 is a side sectional view as seen from the direction of arrow BB in FIG.

FIG. 4 is a cross-sectional view of the filling detection unit as seen from the direction of arrows CC in FIG.

5 is a cross-sectional view of the defective discharge portion as viewed in the direction of arrows D-D in FIG. 1.

FIG. 6 is an enlarged view of a main part of FIG. 2;

FIG. 7 is an enlarged view of a main part of the metering and feeding apparatus with automatic metering correction according to the second embodiment, and is a cross-sectional view seen from the same direction as the direction of arrows AA in FIG.

FIG. 8 is a flowchart of the operation of the second embodiment.

FIG. 9 is a cross-sectional view of a volume measuring tank in a conventional automatic filling and packaging machine.

[Explanation of symbols]

 1 Frame 3 Table 4 Sliding Reference Base 5 Indexing Drive 8 Sliding Lower Plate 8A Lower Weighing Chamber 11 Torque Limiter 12 Guide Shaft 13 Feed Screw 14 Slide 16,50 Adjust Nut 17 Lock Nut 18 Sliding Upper Plate 18A Upper Weighing Chamber 20, 24 Spring 21 Hopper 22A, 28, 30A, 46 Support arm 22B, 27, 30B, 49 Stand 23 Nozzle 25 Filling detector 26 Contact pin 29 Linear slide 29A Linear guide part 29B Sliding part 34 Linear gauge 35 Supply part shutter 33, 36, 45, 47, 52 Air Cylinder 37 Container Transporting Conveyor 38 Supply Pipe 39 Container Holder 41 Container 43 Moving Pipe 48 Discharge Pipe 51 Filling Port Shutter 54 Servo Motor

Claims (3)

[Claims] 1. A powdery or granular material supplied from a hopper is sequentially charged into a plurality of measuring chambers of a constant volume provided at equal intervals on the circumference of an outer peripheral portion of a slidable plate capable of swivel indexing on a horizontal plane. In the device for weighing the powder or granular material in the measuring chamber into a constant volume and supplying the same to the container by the sliding action of the upper surface side and the lower surface side of the measuring chamber by the turning of the sliding plate, A slidable lower plate member having a plurality of lower measuring chambers which are divided into two pieces and penetrate through the outer peripheral portion thereof at equal intervals on the circumference and vertically.
On the slide-cut lower plate member, a cylindrical portion that is rotatable integrally with the slide-cut lower plate member, is vertically movable, and is protruded on the lower surface is slidably inserted into each of the plurality of lower weighing chambers. And a sliding upper plate member through which an upper measuring chamber penetrates substantially vertically to the center of the cylindrical portion, a means for adjusting the vertical position of the sliding upper plate member with respect to the sliding lower plate member, and the sliding lower plate member. And a means for swiveling and indexing a slide-cutting plate composed of a slide-cutting upper plate member, and changing the vertical position of the slide-cutting upper plate member with respect to the slide-cutting lower plate member to change the volume of the lower weighing chamber. A powder and granular material metering and feeding device characterized in that 2. The means for adjusting the vertical position of the slide-cut upper plate member can move only up and down on the feed screw at the upper end of the guide shaft portion provided at the center of the slide-cut lower plate member and on the outer periphery of the guide shaft portion. 2. The powdery or granular material according to claim 1, further comprising: an adjust nut that holds the slide portion that is fitted to the slide-cut upper plate member and that is rotatable by screwing with the feed screw. Metering and feeding device. 3. A servo motor for driving an adjustment nut and a control means for controlling the amount of rotation of the servo motor are provided to compare the measured weight of the granular material supplied to the container with a prescribed weight stored in advance. 3. The powder / granule metering / feeding device according to claim 2, wherein a correction value of a vertical position of the slide-cut upper plate member with respect to the slide-cut lower plate member is obtained to automatically correct the volume of the lower measuring chamber. .