JP2950356B2 - Filling device for flexible container bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device for a flexible container bag.

[0002]

2. Description of the Related Art FIG.
10 are configured as shown in FIG. 4 on the platform scale 1
The stage 3 is supported by erecting the columns 2a, 2b, 2c, 2d. The raw material dispensing section 5 to which the flexible container bag 4 is attached is supported by the cable 3 from the stage 3 so as to be able to move up and down. As shown in FIG. 10, the stage 3 is provided with the following elevating mechanism. Among the rope bodies 6a to 6d each having one end attached to the raw material discharging unit 5, the rope bodies 6a and 6b
Is fixed to drums 9a and 9b attached to a shaft 8 connected to an output shaft of a motor 7 of the stage 3. The other ends of the cords 6c, 6d are fixed to drums 9a, 9b via sheaves 10a, 10b. Accordingly, by rotating the motor 7 in the counterclockwise direction (the direction of arrow A), the ropes 6a and 6c are wound around the drum 9a, and the ropes 6b and 6d are wound around the drum 9b. Rise. By rotating the motor 7 in the clockwise direction (the direction of arrow B), the material discharging section 5 is lowered.

[0003] The flexible container bag 4 is mounted at a position where the raw material dispensing section 5 is lowered, and then rises to a supply position shown in Figs. In this supply position, the raw material is supplied to the flexible container bag 4 from the hopper 11 attached to the fixed side to the raw material discharging section 5 through the passage 12 formed of canvas. When the detected weight of the platform weigher 1 reaches a specified value, the raw material discharging section 5 further moves up to the bag discharge position [arrow C position]. At this bag discharge position, the flexible container bag 4 is removed from the raw material discharging section 5 and is discharged.

Conventionally, in order to stop the material discharging section 5 at each of the bag mounting position, the supply position, and the bag unloading position, a conventional apparatus shown in FIG.
0, the input shaft of the speed reducer 24 is connected to the shaft 8, and the strikers 25a, 25b, 25 are connected to the output shaft of the speed reducer 24.
c is attached at a predetermined angle. Assuming that the material discharging section 5 is raised from the lower limit position to the upper limit position by N rotations of the shaft 8, the speed reducer 24 outputs (1 / N) the rotation of the input shaft to the output shaft. 26a, 26b,
Reference numeral 26c denotes a switch for detecting the strikers 25a, 25b, and 25c. Here, when the switch 26a detects the striker 25a, the raw material dispensing unit 5 determines that the raw material discharging unit 5 is at the bag mounting position and stops the motor 7, and the flexible container bag 4 discharges the raw material. When inputting the information to the unit 5, the motor 7 is operated until the switch 26b detects the striker 25b and it is determined that the material supply unit 5 is at the supply position. When the charging of the raw materials into the flexible container bag 4 is completed, the switch 26c
Detects the striker 25c and operates the motor 7 until it is determined that the raw material discharging section 5 is at the bag discharge position.

[0005]

As described above, the strikers 25a, 25b, 25c and the switches 26a, 26b,
26c, the stop position of the motor 7 is detected. Therefore, when the bag mounting position, the supply position, and the bag carry-out position are changed by changing the depth of the flexible container bag 4 to be used, the output of the speed reducer 24 is changed. Striker 25a, 25 for axis
An operation for changing the mounting angles of b and 25c is required, and this changing operation requires skill.

An object of the present invention is to provide a filling device for a flexible container bag in which the stop position of the raw material discharging section 5 can be easily changed.

[0007]

According to the filling device for a flexible container bag of the present invention, a flexible container bag is attached to a raw material dispensing section, the flexible container bag is lifted up, the weight is measured, and the material is filled into the flexible container bag until a specified weight is reached. In the filling device for a flexible container bag to be charged, an absolute type rotary encoder connected to a drive shaft of an elevating device for elevating and lowering a raw material discharging unit, a memory in which a target stop position of the raw material discharging unit is set, and a set value of the memory And a controller for comparing the output address of the rotary encoder and operating the elevating device.

[0008]

According to this structure, when the output address of the rotary encoder when the material discharging section arrives at the stop target position is set in the memory, the control section determines the set value of the memory and the occasional output address of the rotary encoder. And the elevating device is stopped when the occasional output address of the rotary encoder matches the address set in the memory. Therefore,
The stop position of the lifting device can be changed by updating the contents of the memory.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, an elevating device 13 is mounted on the platform scale 1. This lifting device 13 is shown in FIG.
As shown in the figure, the frame 14 attached to the platform scale 1
And a movable part 15 which can be moved up and down by
The chain 16a, 16b connected to the lower end of the movable portion 15 includes sprockets 18a, 18b of a shaft 17 pivotally supported at the lower portion of the frame 14, and sprockets 19c, 19d attached to the upper end of the frame 14. And is connected to the upper end of the movable part 15 via. Frame 14
As shown in FIG. 6, the cross section is U-shaped, and wheels 20 attached to the side surfaces of the movable portion 15 are engaged with the inside thereof, and the movable portion 15 is supported by the frame 14 so that it can only move up and down. The shaft 17 pivotally supported by the frame 14 is driven by a motor 21. In this manner, the raw material dispensing section 5 is cantilevered to the movable section 15 which moves up and down by
Is supported.

More specifically, the raw material dispensing section 5 to which the flexible container bag 4 is attached is attached to a frame 22 having one side attached to the movable section 15 of the lifting device 13 as shown in FIG. The hopper 11 attached to the fixed side and the upper end of the raw material discharging section 5 are connected via a bellows-like cover 23.

As shown in FIG. 1, an absolute rotary encoder 28 is connected to the shaft 17 via a speed reducer 27. As shown in FIG. 2, the control unit 29 that controls the motor 21 based on the output address of the rotary encoder 28 includes first to third memories Ra and R.
b, Rc and the input device 30 are connected.

Here, assuming that the material discharging section 5 is raised from the lower limit position to the upper limit position by N rotations of the shaft 17, the speed reducer 27 outputs the rotation of the input shaft to the output shaft (1 / N). is there. The first memory Ra, the output address M ₁ to the raw material supplying section 5 is output from the rotary encoder 28 in the presence of the bag mounting position is registered via the input device 30. The second memory Rb, the output address M ₂ of the raw material supplying section 5 is output from the rotary encoder 28 in a state in which the supply position is registered via the input device 30. The third memory Rc, outputs address M ₃ where the raw material supplying section 5 is output from the rotary encoder 28 in the presence of the bag unloading position is registered via the input device 30.

When the start of the mounting operation of the flexible container bag 4 is input to the control unit 29 via the input device 30, when the raw material dispensing unit 5 is not at the bag mounting position, the control unit 29 outputs the output of the rotary encoder 28. address to operate the motor 21 to match the address M ₁ which is registered in the first memory 31a. When the completion of the mounting of the flexible container bag 4 to the raw material dispensing section 5 is input to the control section 29 via the input device 30, the control section 29 registers the output address of the rotary encoder 28 in the second memory 31b. operating the motor 21 to match the address M ₂ which are. When the movable portion 15 raises the raw material discharging section 5 to the supply position shown in FIG. 1, the raw material is supplied from the hopper 11 to the flexible container bag 4 via the raw material discharging section 5. When the detection weight platform scale 1 reaches the predetermined value, the control unit 29 operates the motor 21 to match the address M ₃ output address of the rotary encoder 28 is registered in a third memory 31c, the raw material supplying section 5 further rises, and at this bag discharge position, the raw material discharging section 5
The flexible container bag 4 is detached and carried out.

As described above, since one side of the raw material dispensing section 5 is attached to the elevating device 13 and is moved up and down, the raw material discharging section 5 is lifted.
Can be stably moved up and down without providing a support structure corresponding to the conventional pillars 2a and 2d around the periphery of the raw material discharging section 5 as shown in FIG. The directions F, S1, and S2 are released, and the operation of mounting the flexible container bag 4 and carrying out the filled flexible container bag 4 can be easily performed.

The first to third memories Ra by the control unit 29
The setting change of .about.Rc is configured as shown in FIG.
In step # 1, the contents keyed in from the input device 30 are read into the control unit 29, and in step # 2, it is determined whether the contents read in # 1 are key-in in a predetermined format. The predetermined format referred to here is either “Rn ± xxx mm” or “Rnxxx address”,
“Rn ± xxx mm” is an addition / subtraction update mode for instructing how much the stop position is changed from the current set position, and “Rnxxx address” is the first to first addresses.
This is a setting value exchange update mode in which the contents of the specified memory of the third memories Ra to Rc are rewritten to the specified address.

To raise the bag mounting position by 5 cm, key-in "Ra + 050 mm". In # 3, it is determined that the content read in # 1 is the addition / subtraction update mode, and # 4 is executed. . The control unit 29
The address change amount P of the rotary encoder 28 per one millimeter travel distance of the raw material dispensing unit 5 is set in advance in # 4. In # 4, the contents (Ra ) = Ma is read,
The content (Ra) is rewritten from the first memory Ra to (Ma + 50 · P). When "Ra-050 mm" is keyed in, the contents (Ra) of the first memory Ra are rewritten to (Ma-50.P). Supply position 5
To raise the height by centimeters, use "Rb + 05
The content (Rb) = Mb is read from the second memory Rb, and the content (Rb) of the second memory Rb is rewritten to (Mb + 50 · P).
Rb-050mm "(M
b−50 · P), the content (Ra) of the second memory Rb is rewritten. To raise the bag discharge position by 5 cm, key in “Rc + 050 mm”
The content (Rc) = Mc is read from the third memory Rc,
(Mc + 50 · P) contains the contents (R
Rewrite c). When "Rc-050 mm" is keyed in, the content (Rc) of the third memory Rb is rewritten to (Mc-50.P).

To raise the bag mounting position by 5 cm in the setting value exchange / update mode, "(Ra)
+ 50 · P ″ = xxx is calculated in advance by the staff themselves,
Key-in as "Ra + xxx address". In # 3, #
It is determined that the content read in step 1 is the set value exchange / update mode, and # 5 is executed. In # 5, the content (Ra) of the first memory Ra is rewritten to xxx based on the content read in # 1.

When lowering the bag mounting position by 5 cm, the attendant himself calculates "(Ra) -50.P" = xxx in advance and key-in. In this case, the content (Ra) of the first memory Ra is rewritten to xxx. The same applies to the supply position and the bag discharge position.

As described above, the stop position of the material supply unit 5 can be freely changed only by keying in from the input device 30.

[0020]

As described above, according to the present invention, a flexible container bag is attached to a raw material discharging portion, and the flexible container bag is lifted up and weighed to supply a raw material into the flexible container bag until a specified weight is reached. In the filling device, an absolute type rotary encoder connected to a drive shaft of a lifting / lowering device that raises / lowers a raw material discharging unit, a memory in which a stop target address of the raw material discharging unit is set, a set value of the memory, and an output of the rotary encoder Since the control unit for operating the elevating device by comparing with the address is provided, it is possible to change the stop position of the raw material dispensing unit by selecting the content to be keyed in without changing the mechanical structure, Even without skill, the filling operation can be performed by freely operating the filling device for a flexible container bag.

[Brief description of the drawings]

FIG. 1 is a side view of a filling device for a flexible container bag of the present invention and a configuration diagram of main parts thereof.

FIG. 2 is a configuration diagram of a control unit and its periphery according to the embodiment;

FIG. 3 is a flowchart of a main part of a control unit relating to a change in a stop position of a material supply unit according to the embodiment.

FIG. 4 is a plan view of the embodiment.

FIG. 5 is a front view of the lifting device of the embodiment.

FIG. 6 is a horizontal sectional view of the lifting device according to the embodiment.

FIG. 7 is a front view of a conventional flexible container bag filling device.

FIG. 8 is a plan view of a stage portion of the conventional example.

FIG. 9 is a side view of the conventional example.

FIG. 10 is an explanatory view of a lifting mechanism of the conventional example.

[Explanation of symbols]

 1 scale [weighing device] 4 flexible container bag 5 raw material dispensing unit 13 elevating device 15 movable unit 28 absolute type rotary encoder 29 control unit 30 input device 31a first memory 31b second memory 31c third memory

Claims (2)

(57) [Claims] 1. A flexible container bag is mounted on a raw material dispensing section, and the flexible container bag is lifted up and the weight is measured, and the raw material is fed into the flexible container bag until the specified weight is reached. An absolute rotary encoder connected to the drive shaft of the lifting device to be moved, a memory in which a target stop address of the material discharging section is set, and a comparison between the set value of the memory and the output address of the rotary encoder. And a control unit for operating the FPC. When the stop target address set in the memory is M and the correction distance of the stop position of the lifting / lowering device is + L or -L, the control unit controls the rotary encoder per unit moving distance of the lifting / lowering device. According to the address change amount P, the content of the memory is (M + LP) or (MLP).
The filling device for a flexible container bag according to claim 1, wherein the filling device is configured to be renewed.