JP3698231B2 - Powder filling equipment for containers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a device you predetermined amount automatic charging the powder in the container.
[0002]
[Prior art]
When filling the powder into the container, the liquid filling device cannot be diverted as it is. Liquid filling can be performed by filling a predetermined mass by measuring the liquid volume or by controlling the supply time. Due to the physical properties of the liquid, the injection into the container can also be carried out in the form of a foot so that a plurality of containers can be filled at the same time. However, the powder cannot be filled with a predetermined amount with high accuracy by volume filling, and can not be refilled into the container or relying only on natural fall. Therefore, it is common to attach a powder supply device for stable powder supply and measure the amount of powder filling for each container. Usually, the method for supplying a predetermined amount of powder requires at least three times of weighing. The first measurement is a measurement of the container tare, the second measurement is a general measurement close to the predetermined amount of the filling with the inner ring, and the third measurement is a fine measurement for reaching the predetermined amount. When this measurement is performed with only one measuring instrument, the container is stationary, which is inefficient in time. Therefore, in order to fill the powder while moving the container and increase the filling efficiency, three fixed measuring instruments are required. The time of the method of dispersing twice is reduced by providing a device for placing and unloading the container on the measuring instrument, with the first filling being approximately half of the predetermined amount, and then approximately the predetermined amount being filled. It is efficient to do. However, these loading descending Shi the instrument accuracy vessel is required since using a plurality of instruments. This method is not preferable in terms of productivity because it requires a large space and the filling efficiency is low.
[0003]
If the bulk specific gravity of the powder is constant, its physical properties are also good, and there is no change in the physical properties of the powder during the filling operation, filling a certain amount of the powder is a capacity measurement or filling time It becomes possible by measurement. In this filling, if a plurality of containers are moved simultaneously or moved to a plurality of containers and a plurality of filling ports (hoppers or spouts) synchronized with the containers are provided, the filling can be performed sequentially with a time difference. In this case, if the movement of the container is on the circumference, the area occupied by the apparatus is small and the efficiency is good. As an example, Pouch King PK4000 / inch manufactured by RAJones & Co., Inc. is commercially available. However, if the physical properties of the powder change, the predetermined mass cannot be filled by this method.
[0004]
[Problems to be solved by the invention]
The purpose is to develop a filling device that can respond to changes in the state of the powder or other types of powder, accurately measure the filling amount in each container, and minimize the area occupied by the device for filling operation. .
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present inventors measured the filling amount in each container using a load cell, and provided with a plurality of containers that move and a plurality of hoppers that move in synchronization with the containers. The present invention was completed successfully.
[0006]
That is, the present invention is a container holding device 2 having a container cradle (rotor spider) 7 and a mass measuring device (load cell) 8 incorporated therein, and for supplying powder into the container held by the container holding device 2 . A powder supply device 1 having a screw 16 for supplying powder inscribed in a lower discharge port of a supply hopper 3, a fixed powder supply tank 5 and a container for supplying powder to the powder supply device 1 A control system for receiving the measurement by the mass measuring device of the powder filled therein and the result thereof, transmitting this information to the powder supply device and instructing the powder supply amount, and the container holding device 2 and the powder The body supply device 1 synchronizes and moves on a concentric circle sharing the rotating shaft 20, and mounting the container 6 on the container holding device 2 and measuring the mass of the container tare while the container holding device moves on the circumference. , Powder supply and volume of the powder Performing the filling and the filling amount of the measurement of the inner is a powder filling device to the container characterized by.
[0007]
[Action of the Invention]
A schematic view of a powder filling apparatus for a container of the present invention is shown in FIG. The apparatus of the present invention includes a container supply belt conveyor 18, a container holding apparatus 2, a powder supply apparatus 1 including a base bracket 4 with a hopper 3, a supply tank 5, and a container discharge belt conveyor 19. As shown in FIG. 2, the container holding device 2 and the powder supply device 1 are fixed by a rotating shaft 20 and a rotating disk 10. These configurations will be described functionally. The container 6 to be supplied is conveyed by an endless container supply belt conveyor 18 and, if necessary, a direction change conveyor, and is transferred to the moving container holding device 2, and then the container neck is fixed by the neck holder 9. At this time, the container port is fixed to the lower end of the lower discharge port of the hopper 3 to which the powder is supplied.
[0008]
FIG. 2 shows the mutual relationship between the powder supply device 1, the container holding device 2 and the supply tank 5. The container 6 measures the tare mass after being mounted on the container holding device 2, and the result is stored in the control system. Then the powder supplied to the slope 12 of the base bracket 4 from the supply tank 5 is supplied to the vessel 6 through a hopper 3. As shown in FIG. 3, the powder supply amount is pushed out by a predetermined amount by a feeder 11 controlled by a control system. The feeder 11 is an agitator 17 that mixes and homogenizes the powder in the hopper 3, a screw 16 that pushes and feeds a predetermined amount of powder, a drive shaft 15 that connects and fixes them, a variable control gear 14, and a motor that moves the motor. 13.
[0009]
The lower end diameter and container diameter of the discharge port below the hopper 3 should be small. Positioning in the horizontal direction is sufficient as long as the respective center lines substantially coincide with each other, and it is sufficient that the discharge port at the lower end of the hopper is not displaced outside the container diameter. In this case, the container mouth top and hopper bottom to the instrumentation Chakuoyobi time of desorption of the container in the vertical position the container holding device may be contacted.
[0010]
It is preferable that the lower end of the discharge port below the hopper 3 is positioned lower than the upper end of the container port 6 because the supply of powder into the container is more reliable. This can be achieved by mounting the container 6 on the container holding device 2 and then lowering the hopper, raising the container, or a combination of both. This vertical movement can be realized by installing a movable elevator.
[0011]
The container holding device 2 mainly includes a container cradle (rotor spider) 7 that holds the container 6, a neck holder 9 that fixes the container, and a load cell 8 that measures the mass of the container. The configuration is shown in FIG. . The container holding device is fixed to a rotating plate 10 that shares the base bracket 4 and the rotating shaft 20. Therefore, since the discharge port of the hopper 3 fixed to the container 6 and the base bracket 4 always moves the same when the container 6 is fixed to the container holding device 2, there is no concern about the container positioning. However, even if the container and the powder supply are controlled independently of each other, it is only necessary to supply the powder to the container. In carrying out the present invention, as an example, the number of container holding devices and hoppers is set to be plural, and the numbers are matched.
[0012]
The powder filling apparatus for containers of the present invention can supply powder to a plurality of containers one after another with a slight time difference. The powder is supplied while the container moves along the circumference. During this time, the tare, the primary filling amount, and the predetermined filling amount can be measured by a dedicated load cell for each container. In an example implemented in the present invention, a container is mounted on a container holding device, a predetermined amount of powder is filled in the container, and the time until the container is detached is within about 10 seconds. The filling amount measurement and the predetermined amount filling measurement could be performed. Since the discharge rate of the container was almost 100 / min, the filling efficiency was remarkably improved. Of course, if the rotating plate and the base bracket are enlarged, the number of container holding devices can be increased. Since the container mounting time is extended by the amount of the circumference, the number of measurements can be increased and the accuracy of the filling amount can be increased. In addition, the processing capacity can be doubled by setting the size of the circumference and the mounting time corresponding to the required measurement time so that the mounting of the container can be completed in half the circumference.
[0013]
A feeder 11 that fills the container with powder is shown in FIG. Aid mixing and smooth supply fixed screw 16, the powder to the drive shaft 15 for the feeder 11 is the powder supply inscribed under side of the outlet of the hopper 3 that is fixed to the base bracket 4 An agitator 17, a drive motor 13 for rotating the drive shaft 15, and a gear 14 for variably controlling the rotation of the motor.
[0014]
For accurate powder filling, it is important that the amount of powder supplied matches the amount filled into the container. For this purpose, the amount supplied needs to drop into the container immediately without remaining in the device. . For this purpose, the supply device provided with the screw shown in this example is preferably used. However necessarily limited to this example but is no problem even physical properties of the powder is not more Hama charge due to capacitive filling or time controlled as always stably long as liquid filling, including bulk density good flowability .
[0015]
The configuration of the control system is shown in FIG. The control system has a function of controlling the supply amount of the powder supplied to the container. For this purpose, the mass measurement value by the load cell is converted into an electric signal and the information is sent to the control system. The measurement is performed at least three times until the powder supply is completed. The information entry / exit of this process will be described with reference to FIG. The first measurement sends this information to the control system at the container location 1 with the container's tare mass (information 01). Next, in order to supply 90 to 99% of a predetermined amount called “large insertion”, a command (finger 02) is sent from the control system to the powder feeder at the container position 2 and the powder feeder is rotated in response to this command. The number is controlled and the device is activated (03). Information on the filling amount of the powder is sent back (information 04). Finally, a predetermined amount of supply command (finger 05) is received at the container position 3, and the powder supply device that receives this is operated (06). This measurement result information is sent back to the control system (information 07), and the filling amount and its accuracy are confirmed. If the amount is insufficient, the micro adjustment can be made by repeating the operations (06) to (07) while moving on the circumference. If this operation takes time, it can be dealt with by slowing the rotational speed. When filled beyond the full measure above a predetermined accuracy can be checked A window bets.
[0016]
A commercially available load cell can be used, and a model with an accuracy suitable for the purpose can be selected. Although the accuracy varies depending on the purpose, there is no practical problem if the accuracy is within 1% with respect to the supply amount of 100 g in the case of normal commercial level filling.
[0017]
The shape of the container may be any material such as a glass bottle as well as a molded resin container. On the other hand, even if the shape of the container is a flat pouch or a standing pouch, the container can be prepared by using a known device that picks them up as a container holding device.
[0018]
【Example】
An inner volume of 800 ml, a tare mass of 24 g, and a polypropylene molded bottle (container inner diameter of 30 mm, trunk diameter of 83 mm, height of 211 mm) were filled with powder using the powder filling apparatus for containers of the present invention. This apparatus was equipped with 16 container holding devices, and the loading speed of the containers was 100 / min. The container was filled with 133 g of powder, and about 10,000 powders were filled. The accuracy of the filling amount was ± 2 g (± 1.5%). The time required for the container to be detached after being mounted on the container holding device was about 8 seconds.
[0019]
[Action]
The present invention relates to a container holding device 2 including a container cradle (rotor spider) 7 and a mass measuring device (load cell) 8, and a powder supply for supplying powder into the container held by the container holding device 2. The apparatus 1, the fixed powder supply tank 5 that supplies the powder to the powder supply apparatus 1, the measurement of the powder filled in the container by the mass measuring device, and the result are transmitted to the powder supply apparatus and the powder The container holding device 2 and the powder supply device 1 are synchronously moved on a concentric circle sharing the rotary shaft 20, and the container holding device is on the circumference. Loading the container 6 to the container holding device 2 and measuring the mass of the container tare, supplying the powder into the container, filling the powder, measuring the filling amount, and detaching the container from the container holding device. It can be done fully automatically.
[0020]
【The invention's effect】
It is a powder filling device equipped with a plurality of moving containers and a load cell for measuring the filling amount directly connected to each container in each container, and a plurality of hoppers synchronized with this, so that filling is performed sequentially with a time difference. The filling efficiency is improved, and the area of the apparatus is small because the container moves on the circumference.
[Brief description of the drawings]
FIG. 1 is a schematic view of a powder filling apparatus for a container according to the present invention.
FIG. 2 is a configuration diagram showing the interrelationship between a powder supply device, a container holding device, and a supply tank.
FIG. 3 is a supply machine for supplying and filling powder into a container.
FIG. 4 is an information system diagram of a control system.
[Explanation of symbols]
1 powder supply device 2 container holding device 3 hopper 4 base bracket 5 supply tank 6 container 7 container stand (rotor spider)
8 load cell 9 neck holder 10 turntable 11 feeder 12 slope of base bracket 13 motor 14 gear 15 drive shaft 16 screw 17 agitator 18 container supply belt conveyor 19 container discharge belt conveyor 20 rotation shaft

Claims (5)

A container holding device including a container cradle and a mass measuring device, a hopper for supplying powder into the container held by the container holding device, and extruding and supplying powder inscribed in a lower discharge port of the hopper powder supplying device having to Luz Kurio, supplied screw (16) of the fixed powder supply tank for supplying powder, and the powder supplying device (1) in the hopper of the powder supply device The mass of the container filled with the powder is measured by the mass measuring device (8) of the container holding device (2), the measurement result is transmitted to the powder supply device (1), and the powder is first filled. A control system that commands the supply of a deficient amount of powder to the container
The container holding device and the powder supplying device shares the rotary drive shaft, tuned by rotating moves on concentric in a certain direction, mounting the container to the container holding device during the rotation movement, free space organic weight group measurement, extruding the supply of the first powder from the screw to the powder supplying device into the container, the measurement of the initial powder filling amount supplied into the container inside, a measurement result of the outermost first powder filling amount of Filling the powder filling container with the insufficient amount of powder by the control system for commanding additional powder supply from the screw of the powder supply apparatus , measuring the total powder filling amount of the powder filling container, and the container holding device An apparatus for filling powder into a container, characterized in that an operation for removing the powder-filled container from the container is performed .   The powder supply device has a base bracket having an inclined surface in the circumferential direction from the center, and a plurality of hoppers for powder delivery projecting downward along the outer periphery of the bottom of the base bracket, and powder at the lower end of the hopper 2. The powder filling apparatus for a container according to claim 1, wherein the center line of the body supply port and the center line of the container mouth portion mounted on the container holding device are positioned so as to substantially coincide with each other.   The apparatus for filling powder into a container according to claim 1, wherein the powder discharge port of the powder supply tank is located above the slope of the base bracket. The apparatus for filling powder into a container according to claim 1, wherein the container is a molded container, a glass bottle, a pouch or a bag. Holding vessel holding device of the pouch or bag and powder filling apparatus into the container of 請 Motomeko 1, wherein you include a knob for the opening.

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