Packaging bag sealing detection system

Abstract

To provide a system for determining whether the opening of a packaging bag filled with powder is properly sealed without any powder leakage. [Solution] The control unit 220 includes a setting unit 221 that can set a threshold for the mass concentration of dust measured by the dust meter 210, a determination unit 222 that determines whether the mass concentration of dust exceeds the threshold and determines that the packaging bag exceeding the threshold is a defective sealed bag, and a removal unit 223 that removes the defective sealed bag. The dust meter 210 sucks in airborne dust leaked from the defective sealed bag by the pressure of the vibrating press conveyor 60 through a suction port, irradiates with a laser from a laser diode, converts the intensity of the resulting diffused light into an electrical signal by a photodiode, accumulates as a count by a counter, and converts the count per unit time into a mass concentration, providing a sealed bag determination system 200.

Description

Technical Field

[0001] The present invention relates to a mouth-sealing determination system for packaging bags.

Background Art

[0002] Filling of powders such as flour, powdered feed, and mineral powder into a packaging bag by a powder bagging machine is performed by holding the packaging bag in an upright state and inserting a supply pipe into the valve opening of the packaging bag.

[0003] When the powder is filled into the packaging bag through the valve opening by this powder bagging machine, the powder-filled packaging bag is conveyed to the mouth-sealing position with the valve opening unsealed, and after the valve opening is sealed by the mouth-sealing device, it is discharged from the mouth-sealing device.

[0004] In this type of conventional mouth-sealing device, a powder-filled packaging bag is received from the powder bagging machine, the unsealed filled packaging bag is toppled from the upright state and laid flat on a roller-type or belt-type conveyor, and the filled packaging bag is conveyed to the mouth-sealing position by this conveyor.

[0005] During this conveyance, the filled packaging bag laid flat on the conveyor with the upper and lower sides (the short sides of the bag) along the conveyance direction is tilted at an appropriate angle with respect to the direction orthogonal to the conveyance direction in a plan view by a bag posture tilting mechanism.

[0006] Then, the flat placed filled packaging bag sent out from the bag posture tilting mechanism is sandwiched between a roller conveyor (or a belt conveyor) and a press conveyor and pressed from above, so that the filled packaging bag is flattened and the thickness is maintained at a specified dimension, and then the filled packaging bag is mouth-sealed by a sealing mechanism.

[0007] <00~00024>The sealing mechanism is composed of a heater unit and a cooler unit. The heater unit heats and melts the adhesive applied and dried on the inner surface of the valve opening to join the inner surfaces of the valve opening, and the cooler unit cools and fixes the adhesive to seal the valve opening.

[0008] Patent Document 1 discloses a sealing machine and sealing method for powder-filled packaging bags that efficiently heat the heat-sealable adhesive at the sealing portion of the powder-filled packaging bag to reliably seal the powder-filled packaging bag. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 2008-18945 [Overview of the project] [Problems that the invention aims to solve]

[0010] As shown in Figure 1, the general process for packaging powders in bags is as follows: bag feeding (S1) → filling and weighing (S2) → weight sorting (S3) → pre-sealing treatment (shaping) (S4) → sealing (S5) → final processing (printing) (S6) → weighing and metal detection (S7) → palletizing (S8).

[0011] Furthermore, workers visually inspect the packaging bags to ensure they are properly sealed, checking for things like whether the adhesive on the valve opening is melted or if the seal is wrinkled.

[0012] However, there was a problem in that it was time-consuming and laborious because it was done manually by workers.

[0013] Furthermore, because the inspection was performed visually by workers, there was a risk of human error occurring where poorly sealed bags were mistakenly identified as properly sealed bags.

[0014] Furthermore, if only a small amount of powder leaked from the opening of the packaging bag, the workers might not have noticed.

[0015] The main objective of the present invention is to provide a system for determining whether the opening of a packaging bag filled with powder is properly sealed without any powder leakage.

[0016] Another object of the present invention is to provide a system for eliminating defective sealed bags. [Means for solving the problem]

[0017] A sealing determination system according to the first aspect of the present invention is a sealing determination system for determining the sealing of a packaging bag filled with powder, The aforementioned silence determination system is: A vibrating press conveyor that presses from above to shape the aforementioned packaging bag, A dust meter for measuring the amount of dust, The set includes a control unit for controlling the dust meter, The control unit includes a setting unit that can set a threshold value for the mass concentration of dust measured by the dust meter, A determination unit that determines whether the mass concentration of dust exceeds a threshold and determines that the packaging bag exceeding the threshold is a defective sealed bag, It includes a rejection unit for removing the defective sealed bags, The dust meter sucks in the airborne dust that has leaked from the defective sealed bag due to the pressure of the vibrating press conveyor through the suction port. This is a sealing determination system that uses a laser diode to irradiate a laser, converts the intensity of the resulting diffuse light into an electrical signal using a photodiode, accumulates it as a count using a counter, and converts the count per unit time into a mass concentration.

[0018] With such a system, it is possible to determine whether the packaging bag filled with powder has been properly sealed without any powder leakage.

[0019] Furthermore, such a system can effectively eliminate defective sealed bags.

[0020] The second aspect of the present invention is a gag-determination system relating to the first aspect, The aforementioned vibrating press conveyor is equipped with a blower unit, The aforementioned air blowing unit is a sealing determination system that sends powder leakage caused when the vibrating press conveyor presses the packaging bag to the dust meter.

[0021] In such a system, even if there is a slight powder leakage from the sealed part of the packaging bag, it is possible to determine whether it is a defective sealed bag or not.

[0022] The seal determination system according to the third aspect of the present invention is a seal determination system for determining the seal of a packaging bag filled with powder, The seal determination system includes a dust meter for measuring the amount of dust, and a control unit for controlling the dust meter. The control unit includes a setting unit for setting a threshold value of the amount of light measured by a photoelectric sensor, a determination unit for determining whether the measured amount of light is outside a predetermined range and determining the packaging bag outside the range as a defective sealed bag, and an exclusion unit for excluding the defective sealed bag. The dust meter includes a tape part to which a tape having adhesiveness for attaching dust is attached, an ejector part for collecting floating dust leaking from the seal of the packaging bag and blowing the dust collected on the adhesive surface of the tape, a photoelectric sensor for measuring the amount of light, and a motor part for winding the tape of the tape part. The photoelectric sensor transmits the detected amount of light to the control unit, and the determination unit determines whether the packaging bag is a defective sealed bag based on the detected amount of light.

[0023] In such a system, it is possible to know whether the seal of the packaging bag filled with powder is normal without powder leakage.

[0024] Also, in such a system, defective sealed bags can be appropriately excluded.

[0025] The seal determination system according to the fourth aspect of the present invention is the seal determination system according to the third aspect, including a vibrating press conveyor that presses from above to shape the packaging bag filled with powder. The control unit controls the vibrating press conveyor, This is a sealing determination system in which the operation of the ejector unit is synchronized with the operation of the vibrating press conveyor.

[0026] The ejector unit operates in sync with the vibrating press conveyor, allowing any dust that has leaked out of the seal to be blown onto the tape at the right time.

[0027] A fifth aspect of the present invention is a sealing determination system according to the third aspect, comprising a vibrating press conveyor that presses from above to shape a packaging bag filled with powder, The control unit controls the vibrating press conveyor, This is a sealing determination system in which the operation of the motor unit is synchronized with the operation of the vibrating press conveyor.

[0028] By operating the motor unit in sync with the vibrating press conveyor, the tape can be wound up in time with the ejector unit spraying powder onto the tape. [Brief explanation of the drawing]

[0029] [Figure 1] Conceptual diagram of a conventional powder bag packaging system. [Figure 2] Conceptual diagram of a powder bag packaging system according to one embodiment of the present invention. [Figure 3] A conceptual diagram of the gag sealing determination system according to the same embodiment. [Figure 4] A conceptual diagram of a dust meter according to the same embodiment. [Figure 5] A graph of CMP measured by the dust meter according to the same embodiment. [Figure 6] Conceptual diagram of a gag sealing determination system according to one embodiment of the present invention. [Figure 7] A partial perspective view of a dust meter according to the same embodiment. [Figure 8] A partial perspective view of a dust meter according to the same embodiment. [Figure 9]A perspective view of the dust meter according to the same embodiment. Perspective view. [Modes for carrying out the invention]

[0030] The powder bag packaging system 100 according to this embodiment will be described with reference to the drawings.

[0031] As shown in Figure 2, the process of packaging powder in bags according to this embodiment first involves feeding packaging bags 20 into the powder bagging machine 10 (S11, bag feeding process).

[0032] In this embodiment, the powder bagging machine 10 can be a known model, so its description is omitted.

[0033] Next, the powder is filled into the packaging bags 20 using the powder bagging machine 10 (S12, filling process).

[0034] Next, the packaging bag 20 filled with powder is weighed using the weighing device 30 (S13).

[0035] Since the weighing device 30 is a known device, its description will be omitted.

[0036] Next, the packaging bag 20 filled with powder is pressed from above by the first vibrating press conveyor 40, which is a vibrating press conveyor, to perform pre-sealing treatment (shaping) (S14).

[0037] The vibrating press conveyor 40 is a known device, so its explanation will be omitted.

[0038] Next, the opening of the packaging bag 20 filled with powder is sealed by the sealing device 50 (S15).

[0039] Since the sealing device 50 is a known device, its explanation will be omitted.

[0040] Next, the sealed packaging bag 20 is pressed from above by a second vibrating press conveyor 60, which is a vibrating press conveyor, to shape it (S16).

[0041] The second vibrating press conveyor 60 may also be equipped with a blower 61, which sends the powder that has leaked from the packaging bag 20 to the dust meter.

[0042] Then, the sealing determination system 200 performs a sealing determination to check whether the sealing device 50 has properly sealed the packaging bag 20 (S17). Specifically, it is as follows.

[0043] <First Embodiment> In the first embodiment, the sealing determination system 200 determines the sealing of the bag by measuring the amount of powder dust leaking from the packaging bag 20 using a first dust meter 210, which is a dust meter.

[0044] As shown in Figure 3, the seal determination system 200 includes a first dust meter 210, which is a dust meter for measuring the amount of dust, The system includes a first control unit 220, which is a control unit that controls the first dust meter 210.

[0045] When the packaging bag is pressed from above by the second vibrating press conveyor 60 to shape it, if the sealing of the packaging bag 20 is incomplete, powder will leak from the packaging opening 21.

[0046] Then, the amount of dust that has leaked out is measured using the first dust meter 210.

[0047] In this embodiment, a light scattering type digital dust meter is used as the first dust meter 210. However, the dust meter may also be a light absorption type (beta-ray type) or a piezoelectric balance type (piezo balance type).

[0048] A light-scattering digital dust meter utilizes the principle that when light is shone on dust, the intensity of scattered light from the dust is proportional to its mass concentration. By converting the amount of scattered light into an electrical signal and integrating it, the mass concentration of airborne dust is measured.

[0049] In other words, powder leaking from the packaging opening 21 of the packaging bag is collected by the first dust meter 210, and the mass concentration of the dust is measured.

[0050] As shown in Figure 4, the first dust meter 210 draws in sample air containing suspended dust through the suction port 211, irradiates it with a laser beam from the laser diode 212, converts the intensity of the resulting diffuse light into an electrical signal by the photodiode 213, and integrates it as a count by the counter 214.

[0051] Then, the counts per hour (CPM value) is converted to mass concentration (mg / m3) using the K value (quality-to-severity conversion coefficient).

[0052] The mass concentration of the measured packaging bag 20 is recorded in the first dust meter 210.

[0053] The first control unit 220 includes a first setting unit 221 which is a setting unit that sets a threshold (upper limit) for the mass concentration of dust measured by the first dust meter 210, A first determination unit 222 is a determination unit that determines whether or not the mass concentration of dust exceeds a threshold, The system includes a first discarding unit 223, which discards defective sealed bags that exceed a threshold when the mass concentration of dust measured by the first dust meter 210 exceeds that threshold.

[0054] The first setting unit 221 sets a threshold value for the mass concentration of dust measured by the first dust meter 210.

[0055] The first setting unit 221 can activate an alarm or light if a preset threshold is exceeded.

[0056] Figure 5 is a monitoring graph showing the amount of powder leakage measured from multiple packaging bags 20 using the first dust meter 210. As can be seen from Figure 5, defective bags with powder leakage are detected.

[0057] The first determination unit 222 determines that any packaging bag 20 that exceeds the threshold set by the first setting unit 221 is a defective sealed bag.

[0058] If the first determination unit 222 determines that a packaging bag 20 is a defective bag, the first elimination unit 223 moves the packaging bag 20 to another lane and eliminates the defective bag. Alternatively, the movement of the bags on the lane may be stopped and an employee may eliminate the defective bag.

[0059] Furthermore, the first elimination unit 223 also moves the packaging bag 20 to another lane and eliminates it if it is underweight, overweight, or if metal is detected. Alternatively, the movement on the lane may be stopped and a worker may eliminate the defective sealed bag.

[0060] <Second Embodiment> In the second embodiment, a second dust meter 310, which is a dust meter, is used in the mouth sealing determination system 200. In the second embodiment, the same configuration as in the first embodiment will be omitted or simplified in the description.

[0061] As shown in Figure 7, the mouth sealing determination system 200 of the second embodiment includes a second dust meter 310 and a second control unit 320 which is a control unit that controls the second dust meter 310.

[0062] As shown in Figures 6 to 9, the second dust meter 310 has a tape section 311 to which an adhesive tape for adhering dust (powder) is attached, An ejector unit 312 collects airborne dust (powder) that leaks from the sealing and blows the collected dust (powder) onto the adhesive surface 311a of the tape, A photoelectric sensor 313 for measuring light intensity, The system includes a motor unit 314 for winding up the tape of the tape unit 310.

[0063] The tape section 311 is where the tape having an adhesive surface 311a is attached, and the tape is wound up as the motor of the motor section 314 rotates.

[0064] The ejector unit 312 collects any airborne dust (powder) that has leaked out of the seal and blows it onto the adhesive surface 311a of the tape.

[0065] The photoelectric sensor 313 measures the amount of light passing through the tape that has been sprayed with dust (powder) by the ejector unit 312. The value detected by the photoelectric sensor 313 is transmitted to the second control unit 320.

[0066] The second control unit 320 uses the amount of light transmitted through the tape section 311 as the maximum value and determines whether or not a seal leak has occurred based on the amount of attenuated light passing through the tape to which dust (powder) has been blown by the ejector section 312.

[0067] The photoelectric sensor 313 is controlled by the second control unit 320 and is detected in synchronization with the operation of the vibrating press conveyor 40, which is also controlled by the second control unit 320.

[0068] The motor unit 314 winds up the tape from the tape unit 310 by operating the motor.

[0069] The motor unit 314 is controlled by the second control unit 320 and winds up the tape from the tape unit 310 in synchronization with the operation of the vibrating press conveyor 40, which is also controlled by the second control unit 320.

[0070] The second control unit 320 includes a second setting unit 321, which is a setting unit that sets a threshold value for the amount of light measured by the photoelectric sensor 313, A second determination unit 322 is a determination unit that determines whether the measured light quantity is outside a predetermined range, The device includes a second exclusion unit 323, which is an exclusion unit that removes a defective sealed bag if the amount of light measured by the second dust meter 310 is outside a predetermined range.

[0071] Furthermore, the second control unit 320 controls the vibrating press conveyor 40 and operates the photoelectric sensor 313 and the motor unit 314 in synchronization with the vertical movement of the vibrating press conveyor 40.

[0072] The second setting unit 321 sets a threshold value for the light intensity of dust measured by the second dust meter 310.

[0073] In this embodiment, the second setting unit 321 calculates the attenuation amount from the light intensity of the dust measured by the second dust meter 310, using the light intensity when light passes through the tape of the tape unit 311 as the maximum value, and sets a threshold for the attenuation amount.

[0074] The second setting unit 321 can turn on an alarm or light if the value is outside the range of a preset threshold.

[0075] The second determination unit 322 determines that any packaging bag 20 outside the threshold set by the second setting unit 321 is a defective sealed bag.

[0076] If the second determination unit 322 determines that a packaging bag 20 is a defective sealed bag, the second elimination unit 323 moves the packaging bag 20 to another lane and eliminates the defective sealed bag. Alternatively, the movement of the bags on the lane may be stopped and an employee may eliminate the defective sealed bag.

[0077] Furthermore, the second rejection unit 323 also moves the packaging bag 20 to another lane and rejects it if it is underweight, overweight, or if metal is detected. Alternatively, the movement on the lane may be stopped and a worker may reject the defective sealed bag.

[0078] Packaging bags that are determined to be defective by the first dust meter 210 or the second dust meter 310 are sorted (S18).

[0079] Specifically, if the value obtained by the weighing device 30 for weighing the packaging bag 20 is outside a predetermined range, or if the first determination unit 222 determines that it is a defective sealed bag, the first rejection unit 223 moves the packaging bag 20 to another lane.

[0080] Next, the completion process (printing) is performed, followed by palletizing (S19).

[0081] Although metal detection is not performed in this embodiment, it may be performed. If metal is detected by the metal detection system, the information is transmitted to the first control unit 220 or the second control unit 320, and the first exclusion unit 223 or the second exclusion unit 323 excludes the packaging bag 20.

[0082] The present invention can also be implemented in various improved, modified, or altered forms without departing from its spirit.

[0083] For example, it is possible to use the first embodiment and the second embodiment in combination. [Explanation of Symbols]

[0084] 10 Powder bagging machine 20 packaging bags 21 Packaging opening 40. First Vibrating Press Conveyor 50 sealing devices 60. Second Vibration Press Conveyor 61 Air blower 100 Powder bag packaging system 200 Seal Determination System 210 1st dust meter 211 Suction port 212 Laser Diode 213 Photodiode 214 counter 220 First control unit 221 First Setting Section 222 1st Judgment Department 223 1st elimination section 310 Second dust meter 311 Tape section 311a adhesive side 312 Ejector section 313 Photoelectric Sensor 314 Motor section 320 Second Control Unit 321 Second Setting Section 322 Second Judgment Department 323 2nd Elimination Department

Claims

1. A sealing determination system for determining the sealing of a packaging bag filled with powder, The aforementioned silence determination system is: A vibrating press conveyor that presses from above to shape the aforementioned packaging bag, A dust meter for measuring the amount of dust, The set includes a control unit for controlling the dust meter, The control unit includes a setting unit that can set a threshold value for the mass concentration of dust measured by the dust meter, A determination unit that determines whether the mass concentration of dust exceeds a threshold and determines that the packaging bag exceeding the threshold is a defective sealed bag, It includes a rejection unit for removing the defective sealed bags, The dust meter sucks in the airborne dust that has leaked from the defective sealed bag due to the pressure of the vibrating press conveyor through the suction port. A sealing determination system that uses a laser diode to emit a laser beam, converts the intensity of the resulting diffuse light into an electrical signal using a photodiode, accumulates it as a count using a counter, and converts the count per unit time into a mass concentration.

2. The aforementioned vibrating press conveyor is equipped with a blower unit, The sealing determination system according to claim 1, wherein the air blowing unit sends powder leakage caused when the vibrating press conveyor presses the packaging bag to the dust meter.

3. A sealing determination system for determining the sealing of a packaging bag filled with powder, The aforementioned silence determination system is: A dust meter for measuring the amount of dust, The set includes a control unit for controlling the dust meter, The control unit includes a setting unit that sets a threshold value for the amount of light measured by the photoelectric sensor, A determination unit that determines whether the measured light intensity is outside a predetermined range and determines that the packaging bag outside the range is a defective sealed bag, It includes a removal unit for removing the defective sealed bags. The dust meter has a tape section to which an adhesive tape for collecting dust is attached, An ejector unit that collects airborne dust leaking from the sealing of the packaging bag and blows the collected dust onto the adhesive surface of the tape, A photoelectric sensor for measuring light intensity, The system comprises a motor unit for winding up the tape of the tape section, The photoelectric sensor transmits the detected amount of light to the control unit, and the determination unit determines whether the packaging bag is a defective sealed bag based on the detected amount of light, in a seal determination system.

4. Includes a vibrating press conveyor that presses from above to shape packaging bags filled with powder, The control unit controls the vibrating press conveyor, The mouth sealing determination system according to claim 3, wherein the operation of the ejector unit is synchronized with the operation of the vibrating press conveyor.

5. Includes a vibrating press conveyor that presses from above to shape packaging bags filled with powder, The control unit controls the vibrating press conveyor, The mouth sealing determination system according to claim 3, wherein the operation of the motor unit is synchronized with the operation of the vibrating press conveyor.

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