JPS5915001A - Filler for powdered and granular body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION In a powder/granular material filling device, a packaging bag with a valve is set, and the filling tube of the device is inserted into the valve opening of the bag. The present invention relates to a device including a device for regulating the amount of powder and granular material discharged from the filling tube when a predetermined amount of powder and granular material is filled into a packaging bag while being measured.

FIG. 1 is a schematic explanatory diagram showing the configuration of a support section of a conventional powder filling device equipped with a device for regulating the amount of powder released from the filling tube.

A filling pipe (2) into which the valved packaging bag (1) is inserted through its valve opening is fixed to the weighing frame (3) in a cantilevered manner via a flange part (4), and at its rear end, Flexible pipe fitting (
The powder and granule delivery pipe is connected through 5), and the powder and granule hopper of the filling device is connected to the screw conveyor (6).
The powder and granular material supplied by The powder and granules are forced out into the filling tube (2) through the injection port and released together with compressed air into the packaging bag (υ). 1) is filled and its weight increases, the weighing frame (3) connected to the main body frame (8) via a parallel alignment mechanism sinks in the direction of the arrow, that is, vertically downward. On the other hand, since the weighing frame (3) is connected to the weighing device (not shown) 1 (not shown) via the connecting member (9), the light loading and unloading in the packaging bag (1) is automatically carried out from time to time. In order to accurately and quickly fill a predetermined amount, for example, 25 kg of powder or granules into the packaging bag (1) with less variation, for example, 90% of the predetermined amount is filled at high speed, and the remaining Filling of 10% or 2.5 kg is performed at low speed.

In order to switch the filling speed between high and low levels in this way, the rotary drive device for the screw conveyor (6) is constructed to be mounted on top of the screw conveyor (6). The rotary shaft of the screw conveyor (6) is driven by a belt drive from a drive device, for example a tortoise motor, via an intermediate shaft 0.
Guri Qa is rotatably attached to υ, and it is decelerated and rotated by a drive machine other than the above, that is, a cammotor (1a), and an electromagnetic clutch 0 is attached to the intermediate shaft Oυ in contact with KIIi2. Therefore, for the above-described high-speed filling, the screw conveyor (6) is connected from the motor 00) via the intermediate shaft Qυ with the electromagnetic clutch qtl in the released state. Belt drive is performed at high speed, for example 98Q rpm, and motor α0 is used for low speed filling.
At the same time, the gear motor U is started, and the electromagnetic clutch 04) is connected, and the screw conveyor (6) is driven from the gear motor 0 to the intermediate shaft OQ at a low speed, for example, 9 QrpI+1 IC.
By driving the screw conveyor (6) at two speeds in this manner, the above-mentioned switching operation between high-speed filling and low-speed filling can be performed. The sequence operation consisting of stopping the motor 00, starting the gear motor o3, and connecting the electromagnetic clutch 0.v is performed by a signal outputted from the above-mentioned weighing device based on a preset weighing value. ing.

As mentioned above, the conventional device requires, in addition to the main drive unit 01, an auxiliary drive unit 03 that rotates at a low speed of approximately b+, and an electromagnetic clutch 04 for switching operation between the two motors. The disadvantage is that the configuration is complicated.

This invention solves the above-mentioned drawbacks of conventional powder filling devices equipped with a device for regulating the amount of powder released from a filling tube when measuring and filling a packaging bag with a predetermined amount of powder. In order to solve this problem, in a powder filling device that inserts a packaging bag into a filling tube and fills it with a predetermined amount of powder or granules while measuring, the powder or granules are supplied to the filling tube. A flywheel and a brake mechanism are installed on the rotating shaft that constitutes the drive system of the screw conveyor, and the direct current to the drive viewing machine of the drive system is cut off when most of the predetermined amount of milled powder is filled into the packaging bag. The remaining amount is filled by the rotational energy released from the flywheel, and when the predetermined amount of filling is completed, the brake 1 is applied to brake the screw conveyor, and the screw conveyor is stopped. This is related to a powder or granule filling device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus according to the present invention will be described below with reference to the drawings.

FIG. 2 shows the main parts of this embodiment of the apparatus, namely the screw conveyor and its driving device, the former as a partial side sectional view and the latter as an external side view.
FIG. 6 is a partial side sectional view of the filling tube spool connected to the screw conveyor described above.

In this embodiment, an intermediate shaft 0υ is rotationally driven from a motor 00 equipped with an electromagnetic brake mechanism υ at the rear of the motor via a V-belt, and a rotating shaft of a screw conveyor (6) is driven from this intermediate shaft Qυ. Similarly, it is rotatably driven in the direction of the arrow at a rotational speed of, for example, 980 rl]n via a V-belt. A flywheel (E) is fixed to the left end of the intermediate shaft 0υ. The filling tube (2) is cantilevered to the weighing frame (3) via a flange section (4) and an auxiliary flange section (4), and the powder granule is attached to the rear end via a flexible pipe joint (5). A screw conveyor feeds powder and granules from a powder hopper (not shown) to a so-called rotary carriage attached to the rotating shaft of the screw conveyor (6). Air from India (7) passes through the conduit QG provided at the axis of the rotating shaft and is forced into the filling pipe (2) by pressurized air jetted from the nozzle nozzle at the left end of the conduit QG. There is.

Expansion tube section 08) adjacent to the inlet 07) of the filling tube (2)
is the part where the rubber tube is fixed and covered at both ends, and expands into a lemon shape due to the compressed air sent in from the capillary hole, and the inner peripheral surface of the valve part of the bag (1). The bag holder installed at the bottom of the weighing frame (3) holds the bag (1) together with the stand, and at the same time, the powder and granules pushed out by compressed air from the filling pipe (2) inlet 07) are transferred to the outside. The thin tube (J3) has one end open to the inlet O, and the other end connected to a conduit (not shown) that is opened to the outside air through a filter. This is to exhaust air that cannot be released from the bag itself when the bag (1) is filled with powder or granular material.

In this device, the filling tube (2) is equipped with a shutter with a hole (c) for regulating the flow of powder and granules pushed into the filling tube (2) by the compressed air. is fixed to the weighing frame (3) through the auxiliary flange part (A) and the large flange plate (C) in addition to the above-mentioned flange part (4). The rotor is rotatably housed in the gap space provided between the plate (c) and the weighing frame (3) facing it, and is fixed at the center of rotation of the single-hole shutter (c). The moving shaft (A) is rotated at a certain angle (α
), the amount of powder discharged into the filling pipe (2) can be greatly reduced. In other words, as shown in FIG. 4 when IV % batar m in FIG. A hole η having the same diameter as -I- and a hole with a hole diameter approximately +-1-1 of this hole (1',) are provided, and a lever (T) is provided.
When the lever is closed to the position shown in the figure, the hole G is located at the axis of the nine tombs (2), the amount of powder and granules released is approximately N, and the edge of lever 1 is set at the two-dot chain line. When the shown position 61 is closed, the hole θ is made to be perpendicular to the axis of the filling tube (2), and the discharge amount is made to follow 0% of the time. And the above-mentioned rotational movement of the lever (c) is caused by the elongated hole provided at its tip. ■・C, engage the pin planted in the tip of the operating rod of the air cylinder () fixed to the large flange plate (c), and connect the front-loading operating rod to the air/cylinder (7).
This is done by pushing it out or pulling it in and twisting it. In this way, the conduit of the filling tube (2) is provided with a throttle mechanism consisting of a shutter with a hole (c), a lever (7), and an air cylinder (7).

Although not shown in FIG. 6, the =tt frame (:
Like the conventional device shown in FIG. 1, the luff is engaged with the main body frame so that it can move up and down in parallel.
Packaging bag (1)
(not shown) via a connecting member (9).

Next, the operation of this device will be explained.

- A packaging bag with a valve (as in the conventional device described above)
When the filling pipe (2) is inserted into the valve part, compressed air maintained at a specified pressure is sent from the thin tube hole to the expansion pipe decoy, and at the same time it is also sent to the air cylinder (1). As a result, the operating rod (7) is drawn in, so that the expansion tube part (1) comes into close contact with the inner circumferential surface of the valve part as described above, and the bag holder (1) holds the bag (1) between the base and the valve part. At the same time, since the lever (A) is rotated counterclockwise by an angle α, the holed shutter (C) is rotated in the same direction and at the same angle, and the hole (A) is aligned with the axis of the filling tube (2). position, and the line of the filling pipe (2) is placed in a fully open state.Next, the motor θ is energized, the magnetic brake 0V is released, and at the same time, the motor is started,゛The rotation of the screw conveyor (6) through the rotary giraffe (7)!
Compressed air is sent to Q. The rotation of motor q (I is H
iJ is transmitted to the intermediate shaft 0υ via the V-belt, and further transmitted to the rotating shaft of the screw conveyor (6) via the V-belt, and the screw conveyor (6) is shown in the figure. In the direction of/saying 98Q rpm
Rotate at a rotation speed of

The powder and granules stored in the honohar (not shown) are sent out to the left by the rotation of the screw conveyor (6), but! 41.8 Compressed air is sent to the conduction path QQ, and the powder and granules are sent out from the nozzle roller Kinmei U.
The ejected powder is pushed out into the filling pipe (2) through the convex J flexible pipe joint (5) by this ejected airflow, and is discharged from the inlet 07) together with compressed air into the bag (1).
) and are filled one after another, and the excess air brought into the bag (1) is passed through the thin tube (J3), and the powder and granules contained therein are removed by the filter as described above, and the air is turned into outside air. is released.

The powder and granular material filled in the bag (1) is automatically weighed from time to time by the weighing device via the frame (3) and the transmission member (9).

By the way, the predetermined amount of powder to be filled into the bag (1) is, for example, 25 kg, and 95% of it is filled by the above-mentioned filling operation, that is, the rotation of the motor 00 with the opening of the shutter with holes 100%. The predetermined amount of 5
It is assumed that the overtime of 1.25kg, that is, 1.25kg, is performed by the above-mentioned low-speed filling operation.

To this end, in this device, when the measured value in the weighing device reaches 95% of the predetermined amount, that is, 23.75 kg, the lump weighing device outputs a signal, and this output signal cuts off the power to the motor al. However, the electromagnetic brake ■υ continues to be energized, leaving the brake in a released state. At the same time, the circuit of the directional control valve (not shown) connected to the air cylinder (7) is switched to push out the actuating rod. In addition, the amount of powder and granular material to be filled into the bag (1) is a predetermined amount, that is, 25 kg.
When reaching this point, the metering device outputs a signal again, and this second output signal causes the simultaneous operation of braking the electromagnetic brake Cυ and stopping the supply of compressed air for extruding the powder to the pressure chamber. Subsequently, the operation of discharging the air from the expansion tube section α into the outside air is performed.

Therefore, when the predetermined amount of 95 yen is filled into the bag (1) by the above-described high-speed filling operation, the power to the motor θC is cut off, but since the brake Qυ is in the released state, the intermediate shaft αD performs inertial rotation by releasing the energy (g) stored in the flywheel (a) during the previous operation.

Now, if we take the moment of inertia of the flywheel (A) as the force, then the flywheel effect GD2 = F = 4, and therefore the energy E: iGD"ω1', is the current. Here, ω1 is the screw Conveyor (6)
This is the angular velocity (radian/min) of the intermediate shaft (b) corresponding to the above-mentioned high-speed rotation of the rotating shaft, that is, 980 rpm.

In this way, when the screw conveyor (6) is driven while being decelerated by the inertial rotation of the intermediate shaft (llυ), which is achieved by gradually releasing the energy (t) stored in the flywheel (a), [-j+f] At this time, the air cylinder (7) is activated, and as shown in Fig. 4, the hole in the hole in the filling tube (2) is located at the center of the axis. As a result, the filling tube (2) is reduced in area to a large extent, to the extent that it is submerged.

Therefore, the resistance acting on the screw conveyor (6) increases, so that the inertial rotation of the intermediate shaft Ql described above follows a rather steep curve at a low speed.

Assuming that the angular velocity of the intermediate shaft αυ decreases and reaches ω2, the filling for overtime, that is, 5% of the predetermined amount, will be completed, then the intermediate shaft (llj will change from the angular velocity ω described above to this ω
The energy e released from the flywheel (a) during the change to 2 is e2+ωGD qunyur. Here, it goes without saying that ω is the 7-equal angular velocity of ωI and ω2, which is e (E).

In this way, the screw conveyor (6) is driven by the belt drive performed by the intermediate 4・ill (11) while reducing its rotational speed from its own speed IWω1 to ω2, and the low-speed filling of the above-mentioned residual waste is performed. .

When the amount of powder and granular material filled into the packaging bag (1) reaches a predetermined amount, the brake (21) is actuated by the second output signal from the metering device, and the screw conveyor performs the '1lIi1 movement. At the same time, the rotation of screw conveyor (6) is forcibly stopped;
The supply of pressurized air to the filling pipe (2) is cut off, and the discharge of powder and granular material to the filling pipe (2) is stopped.

In this way, the device of this embodiment has a lower body than the conventional device. This is a simplified version of the ltb system, but when filling a packaging bag with a predetermined amount of powder or granules, for example, a predetermined amount of '? By performing the 5th filling by high-speed filling and the remaining amount, that is, 5% of the chewing amount, by low-speed filling, it is possible to suppress variations and accurately and quickly fill the t9j constant-jaw powder and granular material.

In addition to the above-mentioned rotary mechanism, the mechanism may be of a sliding type that slides in the vertical direction, such as in the case of the gate pulp used in conduit Izekiru.

In addition, when the granular material to be filled is an inexpensive material such as Boatland cement, the accuracy of the filling amount needs to be higher than when the granular material is expensive chemicals, fertilizers, etc. Since this is not the case, the aperture mechanism described above may be omitted. In this embodiment, the brake mechanism is constituted by an electromagnetic brake system υ attached to the motor θO, but it may be directly attached to the intermediate shaft αυ.

As is clear from the above explanation, in the powder filling device according to the present invention, the drive system of the screw conveyor can be configured more simply than in conventional devices, and in addition, a predetermined amount of powder can be filled. After most of the fuel is filled at high speed, the remaining amount is filled by utilizing the flywheel effect of the flywheel, which also has an energy saving effect. Furthermore, when a filling tube is equipped with a throttling mechanism that narrows the channel, it is possible to suppress variations in filling a predetermined amount of powder or granular material with high precision, making it particularly suitable for filling expensive chemicals. .

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the configuration of the main parts of a conventional powder filling device equipped with a device for regulating the amount of powder and granular material discharged from a filling pipe, The main parts of the apparatus according to this embodiment, namely the screw conveyor 2 and its driving device, are shown in a partial cross-sectional view, and the outer shape is 114111 in the latter.
Figure 1 shows the explanatory diagram, and Figure 5 shows the portion around the filling pipe connected to the screw conveyor mentioned above.
! l! 4 is a partial front view including a partial cross section of the IV-IV cross section viewed in the direction of the arrow. (1)...Packaging bag (2)...Filling% (3)
...Weighing frame (6) ...Screw conveyor 0 (cost, °, drive MJJ electric motor Oυ...'f”
l'iJ axis (rotation axis) e2υ...brake mechanism (electromagnetic brake) (c)...flywheel (c)...shutter with hole LJ! υ0.・Lever wire...
Air cylinder c7'9 (c) ■... Throttle mechanism Knee-II Agent 'jP Physician Kitamura dumbfounded'... Ward 1, Figure 2, Figure 3, Figure 6

Claims (1)

[Claims] 1. A packaging bag is inserted into a filling tube, and a predetermined Jt of powder or granular material is placed in it.
- In a powder filling device that fills the powder without measuring, a flywheel and a brake mechanism are attached to the rotating shaft that constitutes the drive system of the screw conveyor that supplies the powder to the filling pipe. When most of the predetermined amount is filled into the packaging bag, the current to the drive motor of the drive system is cut off, and the remaining trays are filled with the rotational energy released from the flywheel. ,
A granular material filling device configured to brake the screw conveyor by the brake mechanism and stop the screw conveyor when a predetermined amount of filling is completed. The filling pipe into which powder and granules are supplied from the two-screw conveyor is designed to have a constriction geometry that can reduce its channel area, and when driven by the rotational energy released from the flywheel of the screw conveyor, the constriction mechanism Claim 1, wherein the filling pipe conduit is constricted.
Powder filling device described in Section 1.