JP2000171324A - Seal part grasping and inspecting device for paper-made packaging body and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and method for numerically precisely grasping and inspecting whether the seal part of a paper-made packaging body is in a desired seal state or not. SOLUTION: This seal part grasping and inspecting device for a paper-made packaging body comprises a measurement system 1 having a signal generator for generating a signal, an exciter for giving a vibration to the paper-made packaging body according to the output from the signal generator, a non-contact type or contact type displacement sensor for measuring the displacement and acceleration of the paper-made packaging body, and an FFT analyzer for FFT processing and comparing the output of the signal generator with the measurement output of the non-contact type or contact type displacement sensor to determine a transmission function; and an analyzing system 2 having a comparative means for comparing the determined transmission function with a basic data to judge the state of the seal part of the paper-made packaging body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for inspecting a paper package, and more particularly to a method and apparatus for inspecting a seal portion of a paper package.

[0002]

2. Description of the Related Art In general, a method for grasping and inspecting a desired state of a seal portion of a paper package is performed after processing the paper package.
There is a method in which a penetrating liquid or the like is sprayed or applied to the seal portion, and whether or not the penetrating liquid or the like penetrates is visually observed. There is also a method in which a paper package sealed after filling with contents (liquid, powder, etc.) is placed under negative pressure, and it is determined whether or not the contents leak out of the sealing portion.

[0003] Therefore, in the above two methods, there is a possibility that a person may mistakenly determine a desired state of the seal portion and a state other than the desired state because the human inspects visually. As a result, there is a problem that the paper package leaks during the distribution process, and loses its commercial value. is there.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and an apparatus for accurately grasping and inspecting whether or not a sealing portion of a paper package is in a desired sealing state by a numerical value. It is an object to provide a method. However, in a desired sealing state, a part or the whole of the sealing portion may be sealed, and the shape, width, and length of the sealing are not limited.

[0005]

According to the present invention, a signal generator for generating a signal and a paper package according to an output from the signal generator are provided. A vibrator that applies vibration to the body, a non-contact or contact-type displacement sensor that measures the displacement and acceleration of the paper package, and the output of the signal generator and the measurement output of the non-contact or contact-type displacement sensor A measurement system including an FFT analyzer for performing a FFT process and comparing to obtain a transfer function;
An analysis system including comparison means for comparing the obtained transfer function with basic data to determine a state of the seal portion of the paper package, and grasping the seal portion of the paper package. This is an inspection device.

In the invention according to claim 2, the basic data is a transfer function obtained by the measurement system for a paper package having a desired seal portion. This is an apparatus for grasping and inspecting the seal portion of a paper package.

According to a third aspect of the present invention, the paper package is vibrated by a vibrator in accordance with the output of the signal device, and the displacement and acceleration of the paper package caused by the vibration are measured in a non-contact type or a contact type. Measuring with a displacement sensor, comparing the output of the signal generator with the measurement output of a non-contact or contact type displacement sensor by FFT processing and comparing to obtain a transfer function, and comparing the obtained transfer function with basic data And an analysis step of determining the state of the seal portion of the paper package.

According to a fourth aspect of the present invention, the basic data is a transfer function obtained by the measuring step for a paper package having a desired seal portion. This is a method for grasping and inspecting the seal portion of a paper package.

[0009]

Embodiments of the present invention will be described below.

FIG. 1 is a block diagram of a device for grasping and inspecting a seal portion of a paper package according to the present invention. However, the portion indicated by the dotted line in FIG. 1 is not included in the device of the present invention. That is, the paper package represented by the dotted line is a target of the grasping inspection. Solid arrows represent the flow of electrical signals or digital information, and dotted arrows represent the force exerted physically. The apparatus of the present invention includes a measurement system 1 and an analysis system 2. The measurement system 1 includes a signal generator, an amplifier, a shaker, a displacement sensor, and an FFT analyzer. The analysis system 2 includes a comparison unit and a storage unit.

Hereinafter, the flow of the method of the present invention performed by the apparatus of the present invention will be described with reference to the flowchart of FIG. In addition, the measurement system 1 has the following STEP1.
4 and the analysis system 2 executes the following STEPS 5-6.

S (STEP) 1; The output of the signal generator is
The signal is passed through an amplifier, amplified to a desired level, and input to a vibrator. Thus, the vibrator excites and vibrates the paper package.

S (STEP) 2: Displacement and acceleration generated by vibration of the paper package are measured at one or a plurality of locations by a contact or non-contact displacement sensor.

S (STEP) 3: The measured output of the contact type or non-contact type displacement sensor is synchronized with the output of the signal generator by the FFT analyzer and compared, so that the signal generator and the paper package can be compared. Find the transfer function between

S (STEP) 4: The FFT analyzer
The obtained transfer function is passed to comparison means.

S (STEP) 5: The comparison means reads the basic data stored in the storage means. The basic data is a transfer function previously obtained in STEPs 1 to 4 executed by the measurement system 1 on a paper package having a desired seal portion.

S (STEP) 6: The comparison means compares the transfer function received from the FFT analyzer with the basic data read from the storage means to determine the state of the seal portion of the paper package.

The material of the paper package to be subjected to the grasping inspection is paper, paperboard, or other materials (plastic,
(Laminate, carbon, glass, etc.), and may be in any form such as a paper box, paper tray, paper plate, paper cup, paper carton, liquid paper container, or cardboard.

[0019]

As described above, the apparatus and method for grasping and inspecting the seal portion of a paper package according to the present invention determines whether the state of the seal portion of the paper package is in a desired state or not. This has the effect that it is possible to accurately grasp and inspect. Here, the desired sealing state includes
In some cases, a part or the whole of the seal portion is sealed, and the shape, width, and length of the seal are not limited.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an apparatus for grasping and inspecting a seal portion of a paper package according to the present invention.

FIG. 2 is a flowchart of a method for grasping and inspecting a seal portion of a paper package according to the present invention.

[Explanation of symbols]

 1. Measurement system 2. Analysis system

Claims (4)

[Claims] 1. A signal generator for generating a signal, a vibrator for applying vibration to a paper package in response to an output from the signal generator, and a non-contact type for measuring displacement and acceleration of the paper package Alternatively, a measurement system including a contact-type displacement sensor, an FFT analyzer that compares an output of the signal generator with a measurement output of the non-contact or contact-type displacement sensor to obtain a transfer function, and a transfer function obtained. An analysis system comprising comparison means for comparing the basic data with the basic data to determine the state of the seal portion of the paper package, and an inspection system for grasping and inspecting the seal portion of the paper package. 2. The paper package according to claim 1, wherein the basic data is a transfer function obtained by the measurement system for a paper package having a desired seal portion. Seal part grasping inspection device. 3. A paper package is vibrated by a vibrator in accordance with an output of a signal device, and displacement and acceleration of the paper package caused by the vibration are measured by a non-contact or contact type displacement sensor. A measurement process of obtaining a transfer function by performing an FFT process on the output of the signal generator and a measurement output of a non-contact or contact type displacement sensor to obtain a transfer function. An analyzing step of determining the state of the seal portion of the body; and a method of inspecting and grasping the seal portion of the paper package body. 4. The paper package according to claim 3, wherein said basic data is a transfer function obtained by said measuring step for a paper package having a desired seal portion. Seal part grasp inspection method.