CN117399299A - Method for detecting tightness of beverage bottle and detection and rejection method - Google Patents

Method for detecting tightness of beverage bottle and detection and rejection method Download PDF

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Publication number
CN117399299A
CN117399299A CN202311102382.4A CN202311102382A CN117399299A CN 117399299 A CN117399299 A CN 117399299A CN 202311102382 A CN202311102382 A CN 202311102382A CN 117399299 A CN117399299 A CN 117399299A
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CN
China
Prior art keywords
product
tightness
height
detected
beverage bottle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311102382.4A
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Chinese (zh)
Inventor
张翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Xispek Inspection Technology Co ltd
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Suzhou Xispek Inspection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Xispek Inspection Technology Co ltd filed Critical Suzhou Xispek Inspection Technology Co ltd
Priority to CN202311102382.4A priority Critical patent/CN117399299A/en
Publication of CN117399299A publication Critical patent/CN117399299A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/3404—Sorting according to other particular properties according to properties of containers or receptacles, e.g. rigidity, leaks, fill-level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/361—Processing or control devices therefor, e.g. escort memory
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0608—Height gauges

Abstract

The application discloses a method for detecting the tightness of a beverage bottle and a detection and rejection method, wherein the method comprises the following steps: acquiring height information of the to-be-detected product based on the detection device; the data processor receives and responds to the height information, and calculates the height of the to-be-detected product; the controller receives the calculated height of the to-be-measured product and compares the calculated height with a preset height, and judges whether the tightness of the to-be-measured product is qualified or not based on a comparison result. According to the method, the tightness of the to-be-detected product is detected by fully utilizing the characteristic that the to-be-detected product expands after being filled with nitrogen, the height information of the to-be-detected product is obtained through the detection device, the height of the to-be-detected product is calculated and compared with the preset height, the tightness of the to-be-detected product is judged according to the comparison result, the tightness of the to-be-detected product can be rapidly judged by adopting the method, the detection precision of the tightness of the to-be-detected product is improved, and meanwhile, the detection method is suitable for timely finding out air leakage to adjust the filling machine before heating sterilization.

Description

Method for detecting tightness of beverage bottle and detection and rejection method
Technical Field
The application relates to the technical field of detection, in particular to a method for detecting the tightness of a beverage bottle and a detection and elimination method.
Background
In the food and beverage industry, such as beer, pop cans are often used for filling, nitrogen is added after a certain amount of liquid is filled in the pop cans, then sealing is carried out, and the sealed pop cans enter the next working procedure. The pop can moves at high speed on the production line, and whether the sealed pop can leaks air or not is detected to be a key point and a difficult point of the whole system.
In the prior art, an ultrasonic sensor is used for detecting air leakage and a liquid level difference value is used for sealing and detecting the to-be-detected product. The technology has at least the following technical problems that for an aluminum tank, ultrasonic echo is small, detection precision is not high, and the same liquid level difference detection is adopted, so that air leakage can be detected only in a liquid level reduction mode after heating sterilization, and air leakage cannot be found in time to adjust the filling machine.
Disclosure of Invention
To overcome the above drawbacks, the object of the present application is: the method for detecting the tightness of the beverage bottle and the detection and rejection method are provided, not only can the detection precision be improved, but also the detection method is suitable for detecting air leakage in time to adjust the filling machine before heating sterilization.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a method of detecting the tightness of a beverage bottle, the method comprising:
acquiring height information of the to-be-detected product based on the detection device;
the data processor receives and responds to the height information, and calculates the height of the to-be-detected product;
the controller receives the calculated height of the to-be-measured product and compares the calculated height with a preset height, and judges whether the tightness of the to-be-measured product is qualified or not based on a comparison result. By the design, whether the sealed pop can leaks air or not can be timely detected, and batch faults are avoided.
In one embodiment, if the comparison result is smaller than a preset threshold value, the tightness of the to-be-tested product is judged to be unqualified.
In an embodiment, if the comparison result is greater than or equal to a preset threshold value, the tightness of the to-be-tested product is judged to be qualified.
In one embodiment, the step of calculating the height of the test article comprises:
and measuring the distance from the center point of the bottle cap of the to-be-measured product to the sensor through the sensor.
In one embodiment, the predetermined height comprises a vertical distance from an edge of a cap of the test article to the sensor.
In one embodiment, the step of calculating the height of the test article comprises:
acquiring an image of the to-be-detected sample through a picture acquisition device, and transmitting the image to a data processor;
and the data processor measures the vertical distance from the edge of the bottom of the to-be-measured product to the center point of the bottle cap of the to-be-measured product.
In one embodiment, the preset height specifically includes a vertical distance from an edge of the bottom of the to-be-measured product to an edge of the to-be-measured product bottle cap.
In one embodiment, the picture capture device comprises at least one industrial camera.
In one embodiment, the preset threshold is 0-1.2mm.
In an embodiment, when the result of the comparison is smaller than a preset threshold, the controller acquires the position information of the reject and transmits the position information to the ejector.
The application also provides a product detection and rejection method for the assembly line, wherein the product moves at a high speed on the assembly line, and the method comprises the following steps:
placing a product to be detected on a conveying line;
and the product to be detected moves and the rejection device rejects unqualified products according to the judging result obtained by the detection method.
Advantageous effects
According to the method, the tightness of the to-be-detected product is detected by fully utilizing the characteristic that the to-be-detected product expands after being filled with nitrogen, the height information of the to-be-detected product is obtained through the detection device, the height of the to-be-detected product is calculated and compared with the preset height, the tightness of the to-be-detected product is judged according to the comparison result, the tightness of the to-be-detected product can be rapidly judged by adopting the method, the detection precision of the tightness of the to-be-detected product is improved, and meanwhile, the detection method is suitable for timely finding out air leakage to adjust the filling machine before heating sterilization.
Drawings
The accompanying drawings are included to provide an understanding of the technical aspects of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present disclosure and together with the embodiments of the disclosure, not to limit the technical aspects of the present disclosure. The shapes and sizes of the various components in the drawings are not to scale, and are intended to be illustrative only of the present application.
FIGS. 1 and 2 are flowcharts of a method for detecting the tightness of a beverage bottle according to an embodiment of the present application;
FIG. 3 is a schematic diagram showing various parameters of a beverage bottle height measurement in accordance with an embodiment of the present disclosure;
fig. 4 is a schematic diagram of parameters of the height measurement of a beverage bottle in the second embodiment provided in the present application.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present application and are not limiting the scope of the present application. The implementation conditions employed in the examples may be further adjusted as in the case of the specific manufacturer, and the implementation conditions not specified are typically those in routine experiments.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. In this context, "electrically connected" includes the case where constituent elements are connected together by an element having some electric action. The "element having a certain electric action" is not particularly limited as long as it can transmit and receive an electric signal between the constituent elements connected. The "element having some kind of electrical action" may be, for example, an electrode or a wiring, or a switching element such as a transistor, or other functional element such as a resistor, an inductor, or a capacitor. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In the present application, the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "middle", and the like are based on the azimuth or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
The application discloses a method for detecting the tightness of a beverage bottle and a detection and rejection method, wherein the method comprises the following steps: acquiring height information of the to-be-detected product based on the detection device; the data processor receives and responds to the height information, calculates the height of the to-be-detected product and compares the height with a preset height; the controller judges whether the tightness of the to-be-detected product is qualified or not based on the comparison result, the tightness of the to-be-detected product is detected by fully utilizing the characteristic that the to-be-detected product expands after being filled with nitrogen, the height information of the to-be-detected product is obtained through the detection device, the height of the to-be-detected product is calculated and compared with the preset height, the tightness of the to-be-detected product is judged according to the comparison result, the tightness of the to-be-detected product can be rapidly judged by adopting the method, the detection precision of the tightness of the to-be-detected product is improved, and meanwhile, the detection method is suitable for timely finding out air leakage to adjust the filling machine before heating sterilization. The detection device may be an industrial camera or a TOF detection module.
This application is mainly applied to the leakproofness detection of easy open can on the assembly line, in the production process of beverage to the filling in the easy open can, need fill liquid nitrogen in the easy open can, firstly, in order to prolong the shelf life, secondly, make the article that awaits measuring plump more firm, the appearance is more pleasing to the eye, be difficult for the deformation, after nitrogen gas is gone into, lid (sealed lid) of the article that awaits measuring can be slight arch under the effect of the pressure of nitrogen gas, if the leakproofness of easy open can is unqualified, the nitrogen gas is revealed, then this bellied height reduces, or this arch disappears, consequently we detect the sealing condition of easy open can according to this bellied height, avoid taking place the batch bad.
A method of testing the tightness of a beverage bottle provided herein is described next with reference to figure 1,
the method comprises the following steps:
acquiring height information of the to-be-detected product based on the detection device;
the data processor receives and responds to the height information, and calculates the height of the to-be-detected product;
the controller receives the calculated height of the to-be-measured product and compares the calculated height with a preset height, and judges whether the tightness of the to-be-measured product is qualified or not based on a comparison result. In the method, whether the tightness of the to-be-detected product (such as a pop can) is qualified or not is judged by detecting the height (the height containing the protrusion) of the cover body of the to-be-detected product. The beverage is filled with quantitative liquid into the pop can through the filling machine during production, and after liquid nitrogen is filled into the pop can, the pop can body with the opening of the pop can is covered by the cover body (the sealing cover), the nitrogen is vaporized in the can body after being flushed, a certain pressure is generated, the sealing cover slightly protrudes under the action of the pressure of the nitrogen, and accordingly whether the sealing performance of the pop can is qualified is detected.
As a variation of the embodiment of fig. 1, a method for detecting the tightness of a beverage bottle is shown in fig. 2, which includes the following steps:
acquiring height information of the to-be-detected product based on the detection device;
the data processor receives and responds to the height information, calculates the height of the to-be-detected product and compares the height with a preset height;
the controller judges whether the tightness of the to-be-detected product is qualified or not based on the comparison result;
in this embodiment, if the comparison result is smaller than the preset threshold, it is determined that the tightness of the to-be-measured product is not acceptable, and if the comparison result is smaller than the preset threshold, it indicates that the protrusion height of the cover of the to-be-measured product is reduced or the protrusion height disappears, mainly due to the leakage of nitrogen in the to-be-measured product, so that the tightness of the to-be-measured product can be determined to be not acceptable.
In this embodiment, if the comparison result is greater than or equal to the preset threshold, the tightness of the to-be-measured product is judged to be qualified, and if the comparison result is greater than or equal to the preset threshold, the protrusion height of the cover of the to-be-measured product is not reduced, and mainly because the nitrogen in the to-be-measured product is not leaked, the tightness of the to-be-measured product can be judged to be qualified.
Referring to fig. 3, in this embodiment, the step of calculating the height of the to-be-measured product includes measuring the vertical distance between the center point of the bottle cap of the to-be-measured product and the sensor 10 (TOF ranging sensor), specifically, the TOF ranging sensor in this embodiment, after the TOF ranging sensor emits the emitted test light to the center point of the bottle cap of the to-be-measured product, the emitted test light irradiates the to-be-measured product, and then part of the test light is reflected back, the light receiving sensor in the TOF ranging sensor receives the reflected light, and the data processor records the time of receiving the light, and by measuring the time difference between the reflected light and the received light, the distance between the center point of the bottle cap of the to-be-measured product and the TOF ranging sensor can be obtained by multiplying the light speed.
Further, in this embodiment, the preset height is the vertical distance from the edge of the bottle cap of the to-be-measured product to the height sensor, and since the liquid capacity of the filling machine for filling into each bottle body is different, and since the nitrogen blocks are too small and different, the height of the protrusion of the bottle cap of the beverage bottle is also different under the action of nitrogen, the vertical distance from the edge of the bottle cap of the to-be-measured product to the height sensor is optimal for the selection of the preset height, and is an invariant, which is favorable for improving the accuracy of the later detection.
Further, the comparison result in the embodiment is specifically calculated height minus a preset height difference, and the basis for judging whether the tightness of the bottle body is qualified in the embodiment is specifically the absolute value of the height difference, and the controller judges whether the tightness of the to-be-detected product is qualified or not based on the absolute value of the height difference; if the absolute value of the height difference value is smaller than a preset threshold value, judging that the tightness of the to-be-detected product is unqualified; if the absolute value of the height difference value is larger than or equal to a preset threshold value, judging that the tightness of the to-be-detected product is qualified, wherein the to-be-detected product in the application is mainly a pop can, after the pop can is flushed with nitrogen, the bottle cap is upwards protruded under the action of the nitrogen, the vertical distance from the center point of the bottle cap of the to-be-detected product to the height sensor is measured by the TOF ranging sensor to be L1, the vertical distance from the edge of the bottle cap of the to-be-detected product to the height sensor is L2, the height difference value is |L1-L2|, the preset threshold value is b1, if |L1-L2| < b1, the tightness of the pop can is unqualified, and if |L1-L2|b 1 is not less than the tightness of the pop can is qualified.
In this embodiment, referring to fig. 4, the step of calculating the height of the to-be-measured article includes acquiring an image of the to-be-measured article by a picture acquisition device and transmitting the image to a data processor; the data processor measures the vertical distance from the edge of the bottom of the to-be-measured product to the center point of the to-be-measured product bottle cap, in practical application, the data processor is specifically arranged in the industrial personal computer, the image acquisition device transmits images to the industrial personal computer, the industrial personal computer receives the images and analyzes and processes the images, the data processor measures the vertical distance from the edge of the bottom of the to-be-measured product to the center point of the to-be-measured product bottle cap on the analyzed and processed images, in order to further accurately measure the area, the image acquisition device transmits images to the industrial personal computer before image measurement for processing the images to enable the image limit to be more clear, then the image acquisition device carries out measurement and analysis on the images, and further, the image acquisition device is at least one image acquisition device, and the image acquisition device in the embodiment is an industrial vision camera.
Further, in this embodiment, the preset height is the vertical distance from the edge of the bottom of the to-be-measured product to the edge of the bottle cap of the to-be-measured product, and since the liquid capacity of the filling machine for filling into each bottle body is different, and since the blocks into which nitrogen is placed are too small and different, the heights of the protrusions of the bottle caps of the beverage bottles are different under the action of the nitrogen, in this embodiment, the vertical distance from the edge of the bottom of the to-be-measured product to the edge of the bottle cap of the to-be-measured product is the optimal for the selection of the preset height, and is an invariant, which is favorable for improving the accuracy of the later detection.
Further, the comparison result in the embodiment is specifically calculated height minus a preset height difference, and the controller judges whether the tightness of the to-be-detected product is qualified or not based on the height difference; if the height difference value is smaller than a preset threshold value, judging that the tightness of the to-be-detected product is unqualified; if the height difference is greater than or equal to the preset threshold, the tightness of the to-be-tested product is judged to be qualified, further referring to fig. 4, the vertical distance H1 from the top protrusion to the bottom edge of the pop-top can cap is measured, the vertical distance from the bottom edge of the to-be-tested product to the edge of the to-be-tested product cap is H2, the height difference is H1-H2, the difference in this embodiment may also be the absolute value of the difference, the preset threshold is b2, H1-H2 is less than b2, the tightness of the pop-top can is not qualified, and if H1-H2 is greater than or equal to b2, the tightness of the pop-top can is qualified.
In this embodiment, the preset threshold is 0-1.2mm, and if the comparison result is smaller than the preset threshold, the tightness of the to-be-tested product is judged to be unqualified. And if the comparison result is greater than or equal to the preset threshold value, judging that the tightness of the to-be-detected product is qualified.
In this embodiment, when the result of the comparison is smaller than the preset threshold, the controller acquires the position information of the reject and transmits it to the ejector, and the ejector receives the position information and rejects the reject.
The embodiment of the application also provides a product detection and elimination method for a production line, wherein the detection and elimination method is based on the method for detecting the tightness of the beverage bottle, and the product moves at a high speed on the production line, and the method comprises the following steps:
placing a product to be detected on a conveying line;
the product to be detected receives the information transmitted by the controller in real time while moving, and the remover responds to the instruction to remove defective products (preferably, prompt information is sent at the moment to remind operators to adjust the filling machine so as to avoid batch defective) when the controller transmits defective/unqualified information, so that the qualified product can be transported to the next stage along with the running water for heat sterilization. In the rejecting method, the pop cans on the production line are detected one by using the detecting method, and defective products (pop cans) which are judged to be air leakage are rejected by using a rejecting device.
The foregoing embodiments are provided to illustrate the technical concept and features of the present application and are intended to enable those skilled in the art to understand the contents of the present application and implement the same according to the contents, and are not intended to limit the scope of the present application. All such equivalent changes and modifications as come within the spirit of the disclosure are desired to be protected.

Claims (10)

1. A method of detecting the tightness of a beverage bottle, the method comprising:
acquiring height information of the to-be-detected product based on the detection device;
the data processor receives and responds to the height information, and calculates the height of the to-be-detected product;
the controller receives the calculated height of the to-be-measured product and compares the calculated height with a preset height, and judges whether the tightness of the to-be-measured product is qualified or not based on a comparison result.
2. A method for testing the tightness of a beverage bottle according to claim 1,
and if the comparison result is smaller than the preset threshold value, judging that the tightness of the to-be-tested product is unqualified.
3. A method for testing the tightness of a beverage bottle according to claim 1,
and if the comparison result is greater than or equal to a preset threshold value, judging that the tightness of the to-be-tested product is qualified.
4. A method for testing the tightness of a beverage bottle according to claim 1,
the calculating of the height of the to-be-measured article includes:
and measuring the distance from the center point of the bottle cap of the to-be-measured product to the sensor through the sensor.
5. A method for testing the tightness of a beverage bottle according to claim 4,
the preset height comprises the vertical distance from the edge of the bottle cap of the to-be-detected article to the sensor.
6. A method for testing the tightness of a beverage bottle according to claim 1,
the step of calculating the height of the to-be-measured article comprises the following steps:
acquiring an image of the to-be-detected sample through a picture acquisition device, and transmitting the image to a data processor;
and the data processor measures the vertical distance from the edge of the bottom of the to-be-measured product to the center point of the bottle cap of the to-be-measured product.
7. A method for testing the tightness of a beverage bottle according to claim 6,
the preset height specifically comprises a vertical distance from the edge of the bottom of the to-be-detected product to the edge of the bottle cap of the to-be-detected product.
8. A method for testing the tightness of a beverage bottle according to claim 1,
the preset threshold value is 0-1.2mm.
9. A method for testing the tightness of a beverage bottle according to claim 2,
and when the comparison result is smaller than a preset threshold value, the controller acquires the position information of the unqualified product and transmits the position information to the ejector.
10. A product inspection culling method for a production line, wherein a product moves at a high speed on the production line, the method comprising:
placing a product to be detected on a conveying line;
the product to be detected is removed, and the remover removes the unqualified product according to the judging result obtained by the detection method according to any one of the claims 1-9.
CN202311102382.4A 2023-08-30 2023-08-30 Method for detecting tightness of beverage bottle and detection and rejection method Pending CN117399299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311102382.4A CN117399299A (en) 2023-08-30 2023-08-30 Method for detecting tightness of beverage bottle and detection and rejection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311102382.4A CN117399299A (en) 2023-08-30 2023-08-30 Method for detecting tightness of beverage bottle and detection and rejection method

Publications (1)

Publication Number Publication Date
CN117399299A true CN117399299A (en) 2024-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN117399299A (en)

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