CN114516458B - Missing code product screening method and product packaging code printing device - Google Patents
Missing code product screening method and product packaging code printing device Download PDFInfo
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- CN114516458B CN114516458B CN202210184597.4A CN202210184597A CN114516458B CN 114516458 B CN114516458 B CN 114516458B CN 202210184597 A CN202210184597 A CN 202210184597A CN 114516458 B CN114516458 B CN 114516458B
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000012216 screening Methods 0.000 title claims abstract description 42
- 238000004806 packaging method and process Methods 0.000 title claims description 30
- 238000001514 detection method Methods 0.000 claims abstract description 80
- 238000004891 communication Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000008267 milk Substances 0.000 description 16
- 210000004080 milk Anatomy 0.000 description 16
- 235000013336 milk Nutrition 0.000 description 16
- 238000012856 packing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
- B65B57/12—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of wrapping materials, containers, or packages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/26—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for marking or coding completed packages
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- Control Of Conveyors (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
The invention discloses a missing code product screening method, which designs a set of method capable of judging whether the product package is coded or not by combining a control unit and a response unit through specific setting of the positions of code printing equipment and a product detection sensor, according to the judging method, the control unit can control the response unit to respond that the product package is coded or not by mistake, for example, an alarm is sent out or the missing code product package is directly screened out from a conveying device, so that detection and screening of missing code or continuous package product packages in the code printing process are realized, and the product packages output from the conveying device are coded. The screening method for the missing code products realizes automatic detection of missing code or continuous package product packages, has high detection efficiency and more accurate detection results, avoids the use of a large number of missing code detection personnel in the production process, and has lower labor cost.
Description
Technical Field
The invention relates to the field of product coding, in particular to a missing code product screening method and a product packaging coding device.
Background
After the milk product is packaged, the milk packaging box needs to be coded, such as production information such as production date. The coding of the existing milk packaging box is usually completed by a coding machine, specifically, the coding machine is arranged on the side of the conveying device, when the milk packaging box works, the milk packaging box is conveyed on the conveying device at intervals by the conveying device, and when the milk packaging box is conveyed to the coding machine, the coding machine codes the milk packaging box. In the coding process of the coding machine, two milk packaging boxes are connected together, or the system does not respond in time and the like, the phenomenon of code leakage can occur frequently. This code printing of milk packing carton, the automatic checkout device of code leakage free usually, for guaranteeing that the product is correct, the milk packing carton of selling all has the code printing, in the current production process, usually by the special staff's naked eye detect the condition of code printing on every milk packing carton to screen out the milk packing carton of code printing not, code printing again. The method for detecting the code printing condition by naked eyes increases the labor production cost, and the method can also lead the detection quantity of the code printing condition of the milk packaging box to be large because of large milk production quantity, leads the high-strength naked eye detection to generate visual fatigue, and is easy to cause the conditions of missed detection and low detection accuracy in the manual code missing detection process.
Disclosure of Invention
The invention aims at providing a screening method for missing code products.
The technical scheme for realizing the aim of the invention is as follows: the utility model provides a leak sign indicating number product screen out method, realizes based on a product packaging coding device, wherein:
the product packaging coding device comprises a conveying device, coding equipment, a product detection sensor, a control unit and a response unit, wherein the product detection sensor and the coding equipment are sequentially arranged at the side of a conveying path of the conveying device along the conveying direction of the conveying device, the horizontal distance between the coding equipment and the product detection sensor is smaller than a value L, the value L is a value equal to the product packaging width, the control unit is provided with a counting unit, and the coding equipment, the product detection sensor and the response unit are respectively in communication connection with the control unit;
the screening method for the missing code products comprises the following steps:
s1, setting a preset value M for the control unit, wherein the preset value M is equal to the counting value of a counting unit of the control unit in a time T, and the time T is equal to the conveying time spent when the conveying distance of the conveying device is a value L;
s2, placing the product package on the conveying device, and conveying the product package by the conveying device in sequence;
s3, conveying each product package to the product detection sensor, and when the product detection sensor detects the front edge of the product package, resetting the counting unit of the control unit and starting counting; along with the conveying of the conveying device, when the product package is conveyed to the coding equipment, the coding equipment codes the product package, and after coding, the coding equipment feeds back coding signals to the control unit, and when the control unit receives the coding signals of the coding equipment, the counting value N1 of the counting unit at the moment is read, wherein N1 is a positive number;
s4, the control unit judges whether the product package is coded without errors according to whether the counting value N1 of the counting unit is read and the counting value N1 when the counting value N1 is read; if the control unit reads the counting value N1 of the counting unit and 0< N1< M, the control unit judges that the product package is coded without errors; otherwise, the control unit judges that the product package is wrongly coded;
s5, the control unit judges that the code printing of the product package is wrong, and controls the response unit to enable the response unit to respond to the error of the code printing of the product package.
Further, in step S3, after the product package passes through the coding device, along with the conveying of the conveying device, the trailing edge of the product package passes through the product detection sensor, and when the product detection sensor no longer detects the product package, the control unit reads the count value N2 of the counting unit at the moment, where N2 is a positive number. The missing code product screening method not only judges whether missing codes exist or not, but also can be used for judging whether the product package is conveyed next to each other or not by reading the counting value N2.
Further, in step S4, the control unit determines whether the product package is coded without error according to whether there is a count value N1 read by the counting unit and the count values N1 and N2 when the count value N1 is read; if the control unit reads the counting value N1 of the counting unit, and N1 is greater than 0 and N2 is less than or equal to M, the control unit judges that the product package is coded without error; if the control unit does not read the counting value N1 of the counting unit and N2 is less than or equal to M, the control unit judges that the product package is not coded; if N2> M, the control unit determines that the product packages are transported next to each other, irrespective of whether the control unit has a count value N1 read by the counting unit and the magnitude of the count value N1 when the count value N1 is read. According to the screening method for the missing code products, the error condition that the product packages are conveyed together in a next-to-next mode can be effectively controlled at a conveying source; whether the source is controlled or not, the error condition of the code printing of the continuous package in the code printing process can be judged through the method, so that the condition that the code printing is missed due to the continuous package in the later product package is avoided, the code printing process is smoother, and no careless mistakes are caused.
Further, the response unit includes a horizontal push rod mechanism facing the conveying device, the product detection sensor, the coding device and the horizontal push rod mechanism are sequentially arranged on the side of the conveying device along the conveying direction of the conveying device, and the horizontal push rod mechanism is electrically connected with the control unit. According to the invention, when the control unit judges that the product package is wrongly coded, the control unit controls the horizontal push rod mechanism of the response unit to extend the horizontal push rod mechanism, so that the product package which is conveyed to the horizontal push rod mechanism and is wrongly coded is pushed out of the conveying device. The horizontal push rod mechanism eliminates the product package with wrong code printing, avoids manual operation, and ensures that the production automation degree and the working efficiency are higher.
Further, the horizontal push rod mechanism is an air cylinder. The horizontal push rod mechanism can be a motor-driven screw rod mechanism or an air cylinder, and compared with the former, the structure of the latter is simpler.
Further, the response unit comprises an alarm device, which is electrically connected to the control unit. The invention is provided with the device, so that the control unit judges that the code printing of the product package is wrong, and controls the alarm device of the response unit to send out an alarm to warn that the code printing of the product package is wrong, and at the moment, if a rejecting mechanism of the product package with the wrong code printing is not provided, an operator can also be warned, so that the operator can reject the product package with the wrong code printing from the conveying device manually.
Further, the alarm device comprises an alarm bell and/or an alarm lamp.
Further, the response unit comprises an alarm device and a horizontal push rod mechanism facing the conveying device, the product detection sensor, the coding equipment and the horizontal push rod mechanism are sequentially arranged at the side of the conveying device along the conveying direction of the conveying device, and the horizontal push rod mechanism and the alarm device are respectively and electrically connected with the control unit;
step S5, if the control unit does not read the count value N1 of the counting unit and N2 is less than or equal to M, the control unit controls the horizontal push rod mechanism of the response unit to extend the horizontal push rod mechanism when judging that the product package is missed in coding, and pushes the product package which is conveyed to the horizontal push rod mechanism and missed in coding out of the conveying device; if N2> M, the control unit determines that the product packages are conveyed next to each other, and controls the alarm device of the response unit to alarm, regardless of whether the control unit has the count value N1 read by the count unit and the magnitude of the count value N1 when the count value N1 is read. Under the arrangement of the invention, if the product package is not packaged, the product package without coding can be accurately pushed out of the conveying device through the horizontal push rod mechanism only when coding is omitted; and to the condition that the product package links the package, because the quantity that links the package is all undetermined, reject through horizontal push rod mechanism is loaded down with trivial details, at this moment, through alarm device's warning is handled more conveniently. The invention can make the rejecting work of the error products more efficient and convenient in the coding process of the product package by combining the mechanical and manual modes.
Further, the conveying device is a conveying belt device. In coding a milk package, a conveyor belt is generally used for conveying.
Further, the product detection sensor comprises a light emitter and a light receiver which are oppositely arranged, the light emitter and the light receiver are respectively positioned at two sides of the conveying device, and the light receiver is electrically connected with the control unit. The product detection sensor can be a position sensor or the photoelectric sensor, and compared with the former, the photoelectric sensor with the latter is used for the position, and the detection precision is higher.
Further, the control unit is an MCU processor. The control unit may be a wide variety of controllers.
The invention aims at providing a product packaging coding device.
The utility model provides a code printing device is beaten to product packaging, includes conveyor, beats sign indicating number equipment, product detection sensor, control unit and response unit, product detection sensor with beat sign indicating number equipment is followed conveyor's direction of delivery is located in proper order conveyor's side, beat sign indicating number equipment with product detection sensor's horizontal interval is less than a numerical value L, and numerical value L is a numerical value equal with product packaging width, control unit has the count unit, beat sign indicating number equipment product detection sensor response unit all respectively with control unit communication connection.
According to the screening method of the missing code product, a set of method capable of judging whether the code is printed on the product package or not is designed by combining the control unit and the response unit through specific arrangement of the positions of the code printing equipment and the product detection sensor, and according to the judging method, the control unit can control the response unit to make a corresponding response of the code printing on the product package, such as sending an alarm or directly removing the missing code printing product package from the conveying device, so that detection and screening of missing code or package-connected product packages in the code printing process are realized, and the product packages output from the conveying device are all coded. The screening method for the missing code products realizes automatic detection of missing code or continuous package product packages, has high detection efficiency and more accurate detection results, avoids the use of a large number of missing code detection personnel in the production process, and has lower labor cost.
Drawings
FIG. 1 is a schematic diagram of the front view of a product package coding device of the present invention;
FIG. 2 is a schematic top view of the product package coding device of the present invention;
fig. 3 is a functional block diagram of a product packaging coding device of the present invention.
Description of the embodiments
The following describes in detail a preferred embodiment of the missing code product screening method and the product packaging and coding device according to the present invention with reference to the accompanying drawings:
as shown in fig. 1 to 3, a product package coding device comprises a conveying device 1, a coding device 2, a product detection sensor 3, a control unit 4 and a response unit 5, wherein the response unit 5 comprises an alarm device 52 and a horizontal push rod mechanism 51 facing the conveying device 1, the product detection sensor 3, the coding device 2 and the horizontal push rod mechanism 51 are sequentially arranged at the side of a conveying path of the conveying device 1 along the conveying direction of the conveying device 1, the horizontal distance L1 between the coding device 2 and the product detection sensor 3 is smaller than a value L, the value L is a value equal to the width of a product package 10, the control unit 4 is provided with a counting unit 41, and the coding device 2, the product detection sensor 3, the horizontal push rod mechanism 51 of the response unit 5 and the alarm device 52 are respectively electrically connected with the control unit 4.
The invention also discloses a screening method of the missing code product, which is realized based on the product packaging code printing device.
The screening method of the missing code product comprises the following steps:
s1, setting a preset value M for the control unit 4, wherein the preset value M is equal to the count value of the counting unit 41 of the control unit 4 in a time T, and the time T is equal to the conveying time spent when the conveying distance of the conveying device 1 is a value L;
s2, placing the product packages 10 on the conveying device 1, and conveying the product packages by the conveying device 1 in sequence;
s3, conveying each product package 10 to the product detection sensor 3, and when the product detection sensor 3 detects the front edge of the product package 10, clearing the counting unit 41 of the control unit 4 and starting counting; along with the conveying of the conveying device 1, when the product package 10 is conveyed to the coding device 2, the coding device 2 codes the product package 10, after coding, the coding device 2 feeds back a coding signal to the control unit 4, and when the control unit 4 receives the coding signal of the coding device 2, the control unit 4 reads the counting value N1 of the counting unit 41 at the moment; after the product package 10 passes through the coding device 2, along with the conveying of the conveying device, when the trailing edge of the product package 10 passes through the product detection sensor 3 and the product detection sensor 3 no longer detects the product package 10, the control unit 4 reads the count value N2 of the counting unit 41 at the moment; wherein N1 and N2 are positive numbers;
s4, the control unit 4 judges whether the product package 10 is coded without error according to whether the count value N1 read by the count unit 41 and the count value N1 and the count value N2 read by the count unit N1; if the control unit 4 has a count value N1 read by the counting unit 41, and 0< N1< N2 is less than or equal to M, the control unit 4 judges that the product package is coded without error; if the control unit 4 does not read the count value N1 of the count unit 41 and N2 is less than or equal to M, the control unit 4 judges that the product package 10 is not coded; if N2> M, the control unit 4 determines that the product packages 10 are conveyed next to each other, irrespective of whether the control unit 4 has a count value N1 read by the counting unit 41 and the magnitude of the count value N1 when the count value N1 is read;
s5, if the control unit 4 does not read the count value N1 of the counting unit 41 and N2 is less than or equal to M, and the control unit 4 judges that the product package 10 is missed in coding, the control unit 4 controls the horizontal push rod mechanism 51 of the response unit 5 to enable the horizontal push rod mechanism 51 to extend, and the product package 10 conveyed to the horizontal push rod mechanism 51 and missed in coding is pushed out of the conveying device 1; if N2> M, the control unit 4 determines that the product packages 10 are conveyed next to each other, irrespective of whether the control unit 4 has the count value N1 read by the counting unit 41 and the magnitude of the count value N1 when the count value N1 is read, and the control unit 4 controls the alarm device 52 of the response unit 5 to make the alarm device 52 sound an alarm.
According to the product packaging coding device, the horizontal distance L1 between the coding equipment 2 and the product detection sensor 3 is smaller than a numerical value L, and the setting function is to ensure that whether coding is correct or not can be judged by the condition that the number is 0< N1< M after coding.
According to the missing code product screening method, during operation, the product packages 10 are arranged on the conveying device 1 at intervals and are conveyed by the conveying device 1 in sequence. In the process of conveying the product package 10 by the conveying device 1, normally, the front edge of the product package 10 will reach the product detection sensor 3 first, the product detection sensor 3 will detect the front edge of the product package 10 first, and at this time, the counting unit 41 of the control unit 4 clears and starts counting; after the counting unit 41 of the control unit 4 clears and starts counting, as the conveying device 1 conveys, since the horizontal distance L1 between the coding device 2 and the product detection sensor 3 is smaller than the value L equal to the width of the product package 10, the product package 10 will reach the coding device 2 first, the coding device 2 performs coding, and at the same time, the counting unit 41 counts the value N1 when the control unit 4 reads the coding signal of the coding device 2; then, with the conveying of the conveying device 1, the trailing edge of the product package 10 passes through the product detection sensor 3, the product detection sensor 3 detects the trailing edge of the product package 10, the product package 10 passes through the product detection sensor 3 completely, the product detection sensor 3 no longer detects the product package 10, and at the same time, the control unit 4 reads the count value N2 of the counting unit 41 when the product detection sensor 3 no longer detects the product package 10.
According to the missing code product screening method, the product package 10 reaches the code printing device 2 first, the code is printed by the code printing device 2, and then the trailing edge of the product package 10 passes through the product detection sensor 3, so that the count value N1 of the count unit 41 is generally smaller than the count value N2. Moreover, since the count value N1 of the count unit 41 is a count value when the conveying device 1 conveys a width distance of the product package 10, the preset value M of the control unit 4 is equal to the count value of the count unit 41 in a conveying time spent when the conveying distance of the conveying device 1 is the value L, and the count value N2 is normally equal to the preset value M. Therefore, when the code is normal, the control unit 4 not only reads the count value N1 of the count unit 41, but also reads 0< N1< N2 less than or equal to M, otherwise, the control unit 4 can also determine whether the product package 10 is coded by whether the count value N1 read by the count unit 41 and the count value N1 read by the count value N1 are present.
In the screening method of the missing code product, in the preferred embodiment, if the control unit 4 reads the counting value N1 of the counting unit 41 and N1N 2 is greater than 0 and less than or equal to M, the control unit 4 judges that the product package is coded without errors; if the control unit 4 does not read the count value N1 of the count unit 41 and N2 is less than or equal to M, the control unit 4 judges that the product package 10 is not coded; if N2> M, the control unit 4 determines that the product packages 10 are conveyed next to each other, irrespective of whether the control unit 4 has a count value N1 read by the counting unit 41 and the magnitude of the count value N1 when the count value N1 is read.
According to the screening method of the missing code product, the missing code is always judged to be correct only through the relation of 0< N1< M, and the rest conditions are all judged to be wrong; for the case of code errors, the response unit 5 may not be subdivided and may respond uniformly.
According to the screening method for the missing code products, under the preferred implementation mode, the situation that the code is wrong is subdivided, and the situation that the missing code and the code of different continuous packets are wrong is separated; and aiming at the situation that the coding is wrong in different modes, the control unit 4 controls the response unit 5 to respond differently and process differently, so that the operation is finer and more precise, and the operation efficiency is higher.
The missing code product screening method of the invention can effectively control the error condition that the product packages 10 are conveyed together next to each other at the conveying source, for example, the product packages 10 are controlled at the conveying source, so that the adjacent product packages 10 are all spaced. Whether the conveying source is controlled or not, the invention judges that the code printing of the continuous package is wrong in the code printing process according to the preferred implementation mode of the method, thereby avoiding the condition that the code printing of the subsequent product package is missed due to the continuous package, ensuring that the code printing process is smoother and free from careless mistakes.
The product package coding device of the invention can only comprise a horizontal push rod mechanism 51, only comprise an alarm device 52, and also can comprise the horizontal push rod mechanism 51 and the alarm device 52. When the response unit 5 only includes the horizontal push rod mechanism 51, in the production process, the control unit 4 determines that the product package 10 is coded in error, the control unit 4 may control the horizontal push rod mechanism 51 of the response unit 5, so that the horizontal push rod mechanism 51 extends, and the product package 10 conveyed to the position of the horizontal push rod mechanism 51 and coded in error is pushed out of the conveying device 1. When the response unit 5 only includes the alarm device 52, in the production process, the control unit 4 determines that the code of the product package 10 is wrong, the control unit 4 may control the alarm device 52 of the response unit 5 to make the alarm device 52 send an alarm to warn that the code of the product package 10 is wrong, and at this time, if the rejection mechanism of the product package 10 with the wrong code is not set, an operator may also be warned, so that the operator may manually reject the product package 10 with the wrong code from the conveying device 1.
In the product package coding device, when the response unit 5 includes the horizontal push rod mechanism 51 and the alarm device 52, in step S5 of the missing code product screening method, the control unit 4 judges that the product package 10 is coded in error, and the control unit 4 can control the response unit 5 to perform more refined response. If the control unit 4 does not read the count value N1 of the count unit 41 and N2 is less than or equal to M, and the control unit 4 judges that the product package 10 is not coded, the control unit 4 controls the horizontal push rod mechanism 51 of the response unit 5 to enable the horizontal push rod mechanism 51 to extend, and the product package 10 conveyed to the horizontal push rod mechanism 51 and not coded is pushed out of the conveying device 1; if N2> M, the control unit 4 determines that the product packages 10 are conveyed next to each other, irrespective of whether the control unit 4 has the count value N1 read by the counting unit 41 and the magnitude of the count value N1 when the count value N1 is read, and the control unit 4 controls the alarm device 52 of the response unit 5 to make the alarm device 52 sound an alarm.
According to the missing code product screening method, if the product package 10 is not covered by edges, the missing code product package 10 can be accurately pushed out of the conveying device 1 through the horizontal push rod mechanism 51 when missing codes; in the case of the product package 10 being packaged, the number of packages is not determined, so that the horizontal push rod mechanism 51 is complicated to remove, and the warning device 52 is more convenient to alert. The screening method for the missing code products can enable the product package 10 to be removed with errors in the coding process more efficiently and conveniently by combining the mechanical mode and the manual mode.
In the missing code product screening method, the control unit 4 controls the horizontal push rod mechanism 51 of the response unit 5 to enable the horizontal push rod mechanism 51 to extend, and when the product package 10 which is conveyed to the position of the horizontal push rod mechanism 51 and missing codes is pushed out of the conveying device 1, the control unit 4 calculates the time for conveying the product package 10 to the position of the horizontal push rod mechanism 51, and then controls the horizontal push rod mechanism 51 to extend.
In the product packaging coding device of the present invention, the horizontal push rod mechanism 51 is preferably an air cylinder. The horizontal push rod mechanism 51 may be a motor-driven screw rod mechanism or an air cylinder, and the latter is simpler in structure than the former.
The product package coding device of the present invention, the alarm device 52 generally includes an alarm bell 521 and/or an alarm light 522.
The product package coding device of the invention is characterized in that the conveying device 1 is a conveying belt device. In coding a milk package, a conveyor belt is generally used for conveying.
The product packaging coding device is characterized in that coding equipment 2 is existing equipment, and the specific structure of the coding equipment is not described in detail.
In the product packaging coding device of the present invention, preferably, the product detection sensor 3 includes a light emitter 31 and a light receiver 32 that are disposed opposite to each other, the light emitter 31 and the light receiver 32 are respectively located at two sides of the conveying device 1, and the light receiver 32 is electrically connected to the control unit 4. The product detection sensor 3 may be a position sensor or the above-described photoelectric sensor, and the latter photoelectric sensor is used here with higher detection accuracy than the former.
The product packaging coding device is characterized in that the control unit 4 is an MCU processor. The control unit 4 may be a wide variety of controllers.
According to the missing code product screening method, a set of method capable of judging whether the product package 10 is coded correctly is designed by combining the control unit 4 and the response unit 5 through specific arrangement of the positions of the coding equipment 2 and the product detection sensor 3, and according to the judging method, the control unit 4 can control the response unit 5 to make a corresponding response that the product package 10 is coded incorrectly, for example, an alarm is sent or the missing code product package 10 is directly screened out from the conveying device 1, so that detection and screening of missing code or continuous package product packages 10 in the coding process are realized, and the product packages 10 output from the conveying device 1 are coded. The screening method for the missing code products realizes automatic detection of the missing code or continuous package product package 10, has high detection efficiency and more accurate detection result, avoids the use of a large number of missing code detection personnel in the production process, and has lower labor cost.
In the missing code product screening method of the present invention, the front edge of the product package 10 refers to the front end line in the width direction of the product package 10, and in step S3, "when the product detection sensor 3 detects the front edge of the product package 10" refers to "when the product detection sensor 3 detects the front end line in the width direction of the product package 10"; the trailing edge of the product package 10 generally refers to the trailing edge line of the product package 10 in the width direction, and the step S3 "the trailing edge of the product package 10 passes the product detection sensor 3" refers to "the trailing edge line of the product package 10 in the width direction passes the product detection sensor 3". In the method for screening out the missing code product, when the product package 10 is in a square structure, a front end line in the width direction of the product package 10 and a rear end line in the width direction of the product package 10 are respectively a front boundary line and a rear boundary line formed by forward projection of the product package 10; when the product package 10 is in a special-shaped structure, a front end line in the width direction of the product package 10 and a rear end line in the width direction of the product package 10 are respectively a front vertical line and a rear vertical line where two endpoints of the maximum width of the forward projection of the product package 10 are located.
In the missing code product screening method, the conveying speed of the conveying device 1 is always consistent.
It should be understood by those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit or essential characteristics thereof.
Claims (9)
1. A screening method for missing code products is characterized by comprising the following steps: based on a product package coding device, wherein:
the product packaging coding device comprises a conveying device, coding equipment, a product detection sensor, a control unit and a response unit, wherein the product detection sensor and the coding equipment are sequentially arranged at the side of a conveying path of the conveying device along the conveying direction of the conveying device, the horizontal distance between the coding equipment and the product detection sensor is smaller than a value L, the value L is a value equal to the product packaging width, the control unit is provided with a counting unit, and the coding equipment, the product detection sensor and the response unit are respectively in communication connection with the control unit;
the screening method for the missing code products comprises the following steps:
s1, setting a preset value M for the control unit, wherein the preset value M is equal to the counting value of a counting unit of the control unit in a time T, and the time T is equal to the conveying time spent when the conveying distance of the conveying device is a value L;
s2, placing the product package on the conveying device, and conveying the product package by the conveying device in sequence;
s3, conveying each product package to the product detection sensor, and when the product detection sensor detects the front edge of the product package, resetting the counting unit of the control unit and starting counting; along with the conveying of the conveying device, when the product package is conveyed to the coding equipment, the coding equipment codes the product package, and after coding, the coding equipment feeds back coding signals to the control unit, and when the control unit receives the coding signals of the coding equipment, the counting value N1 of the counting unit at the moment is read, wherein N1 is a positive number; after the product package passes through the coding equipment, along with the conveying of the conveying device, the trailing edge of the product package passes through the product detection sensor, and when the product detection sensor no longer detects the product package, the control unit reads the counting value N2 of the counting unit at the moment, wherein N2 is a positive number;
s4, the control unit judges whether the product package is coded without errors according to whether the count value N1 of the counting unit is read and whether the count value N1 and the count value N2 are read; if the control unit reads the counting value N1 of the counting unit, and N1 is greater than 0 and N2 is less than or equal to M, the control unit judges that the product package is coded without error; if the control unit does not read the counting value N1 of the counting unit and N2 is less than or equal to M, the control unit judges that the product package is not coded; if N2> M, the control unit determines that the product packages are conveyed next to each other regardless of whether the control unit has a count value N1 read by the counting unit and the count value N1 when the count value N1 is read;
s5, the control unit judges that the code printing of the product package is wrong, and controls the response unit to enable the response unit to respond to the error of the code printing of the product package.
2. The missing code product screening method of claim 1, wherein: the response unit comprises a horizontal push rod mechanism facing the conveying device, the product detection sensor, the coding equipment and the horizontal push rod mechanism are sequentially arranged on the side of the conveying device along the conveying direction of the conveying device, and the horizontal push rod mechanism is electrically connected with the control unit.
3. The missing code product screening method of claim 2, wherein: the horizontal push rod mechanism is an air cylinder.
4. The missing code product screening method of claim 1, wherein: the response unit comprises an alarm device, which is electrically connected with the control unit.
5. The missing code product screening method of claim 4, wherein: the alarm device comprises an alarm bell and/or an alarm lamp.
6. The missing code product screening method of claim 1, wherein: the response unit comprises an alarm device and a horizontal push rod mechanism facing the conveying device, the product detection sensor, the coding equipment and the horizontal push rod mechanism are sequentially arranged at the side of the conveying device along the conveying direction of the conveying device, and the horizontal push rod mechanism and the alarm device are respectively and electrically connected with the control unit;
step S5, if the control unit does not read the count value N1 of the counting unit and N2 is less than or equal to M, the control unit controls the horizontal push rod mechanism of the response unit to extend the horizontal push rod mechanism when judging that the product package is missed in coding, and pushes the product package which is conveyed to the horizontal push rod mechanism and missed in coding out of the conveying device; if N2> M, the control unit determines that the product packages are conveyed next to each other, and controls the alarm device of the response unit to alarm, regardless of whether the control unit has the count value N1 read by the count unit and the magnitude of the count value N1 when the count value N1 is read.
7. The missing code product screening method of claim 1, wherein: the product detection sensor comprises a light emitter and a light receiver which are oppositely arranged, wherein the light emitter and the light receiver are respectively positioned at two sides of the conveying device, and the light receiver is electrically connected with the control unit.
8. The missing code product screening method of claim 1, wherein: the conveying device is a conveying belt device; the control unit is an MCU processor.
9. A product packaging coding device, applied to the missing code product screening method of any one of claims 1 to 8, characterized in that: the automatic packaging machine comprises a conveying device, a coding device, a product detection sensor, a control unit and a response unit, wherein the product detection sensor and the coding device are sequentially arranged on the side of the conveying device along the conveying direction of the conveying device, the horizontal distance between the coding device and the product detection sensor is smaller than a numerical value L, the numerical value L is equal to the packaging width of a product, the control unit is provided with a counting unit, and the coding device, the product detection sensor and the response unit are respectively in communication connection with the control unit.
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