CN106733696B - Special detection system and method for flat chopsticks - Google Patents

Special detection system and method for flat chopsticks Download PDF

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Publication number
CN106733696B
CN106733696B CN201611208317.XA CN201611208317A CN106733696B CN 106733696 B CN106733696 B CN 106733696B CN 201611208317 A CN201611208317 A CN 201611208317A CN 106733696 B CN106733696 B CN 106733696B
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detection
flat
chopsticks
detection device
chopstick
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CN106733696A (en
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孙泽军
黄建国
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Changsha Shitong Life Technology Co ltd
Kunshan Baozhu Intelligent Technology Co ltd
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Kunshan Baozhu Intelligent Technology Co ltd
Changsha Sinotong Ppc Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/04Sorting according to size
    • B07C5/10Sorting according to size measured by light-responsive means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/02Measures preceding sorting, e.g. arranging articles in a stream orientating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/34Sorting according to other particular properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting 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
    • B07C5/34Sorting according to other particular properties
    • B07C5/342Sorting according to other particular properties according to optical properties, e.g. colour

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Abstract

A special detection system for flat chopsticks comprises a controller and the following devices which are sequentially arranged along the conveying direction of the flat chopsticks: a chopstick head detection device; a length detection device; a thickness detection device; the chopstick body double-side detection device is used for detecting parameters such as pits, mildew and the like on the chopstick body double sides of the flat chopsticks and sending the detection values to the controller; and the controller is used for receiving detection parameters sent by the chopstick head detection device, the length detection device, the thickness detection device and the chopstick body double-side detection device, comparing the detection parameters with a set standard value, sending a detection result to the display screen and/or sending an rejecting signal to the rejected product rejecting device according to the detection result, and rejecting a detected rejected product through manual work or the rejected product rejecting device. The invention also discloses a special detection method for the flat chopsticks. The detection system has the advantages of simple structure and low manufacturing cost, realizes automatic and continuous quality detection of the quality of the flat chopsticks, reduces the working strength of detection personnel, improves the quality detection efficiency of the flat chopsticks, and reduces the quality detection cost.

Description

Special detection system and method for flat chopsticks
Technical Field
The invention relates to a chopstick detection device, in particular to a special detection system and method for flat chopsticks (especially disposable chopsticks).
Background
Chopsticks are used as daily necessities of our lives and are closely related to our lives. The bamboo and wood are made into bamboo-wood chopsticks through material selection, classification, strip cleaning, straightening, drying, spinning, cutting and end rolling. When a person uses the chopsticks to clamp food, fingers and the food have certain acting force on the chopsticks, and if the chopsticks have the problems of non-round surfaces, hollow and deformed shapes, the strength and the appearance regularity of the chopsticks are affected, and the overall service life and the use feeling of the chopsticks are finally affected. Therefore, the quality of the chopsticks needs to be detected before sale, however, most of the traditional chopstick production enterprises adopt manual quality detection, the detection efficiency is low, the detection standards are not uniform, and the product stability is poor.
CN 106000910A discloses round chopsticks sieve separator, including the frame, set up feeder hopper, play hopper in the frame and set up the feeder hopper with go out the screening mechanism between the hopper, still including setting up transport mechanism in the frame and setting up the clearance mechanism on the transport mechanism, the screening mechanism is including setting gradually circularity screening mechanism and the crooked screening mechanism in the frame. Due to the structural difference of the flat chopsticks and the round chopsticks, the screening is not suitable for the screening of the flat chopsticks.
CN 104690009 a discloses an oblique blowing material quality inspection machine, which comprises a frame, a feeding mechanism located at one end of the frame, a hopper and a horizontal chain conveying mechanism matched with the feeding mechanism, a thickness detection mechanism, a bending detection mechanism, a length detection mechanism, a material receiving box and an air blowing port matched with the material receiving box, wherein the thickness detection mechanism, the bending detection mechanism, the length detection mechanism, the material receiving box and the air blowing port are arranged on the horizontal chain conveying mechanism; the horizontal chain conveying mechanism comprises a first horizontal chain conveying mechanism and a second horizontal chain conveying mechanism which are matched with the feeding mechanism, and an inclined chain conveying mechanism which moves upwards and downwards is arranged between the first horizontal chain conveying mechanism and the second horizontal chain conveying mechanism; the material receiving box and the air blowing port are arranged on the oblique chain conveying mechanism. The inclined blowing material quality inspection machine cannot detect detection indexes such as double-sided flatness and chromatic aberration of the flat chopsticks, and the phenomenon that unqualified samples are rejected is caused.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the special detection system for the flat chopsticks overcomes the defects of the prior art, has a simple structure and high detection precision, and can continuously detect a plurality of detection indexes such as the curvature of the flat chopsticks, the surface flatness, the color difference and the like, and the method for detecting the quality of the flat chopsticks by adopting the system.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a special detection system for flat chopsticks comprises a controller and the following devices which are sequentially arranged along the conveying direction of the flat chopsticks:
the chopstick head detection device is used for detecting parameters such as the branching distance of the chopstick heads of the flat chopsticks, the widths of the chopsticks, the black spots of the chopstick heads and the like;
the length detection device is used for detecting the length and the curvature of the flat chopsticks and sending the detection result to the controller;
the thickness detection device is used for detecting the thickness of the flat chopsticks and sending the detection result to the controller;
the chopstick body double-side detection device is used for detecting parameters such as pits, mildew and the like on the chopstick body double sides of the flat chopsticks and sending the detection values to the controller;
and the controller is used for receiving detection parameters sent by the chopstick head detection device, the length detection device, the thickness detection device and the chopstick body double-side detection device, comparing the detection parameters with a set standard value, sending a detection result to the display screen and/or sending an rejecting signal to the rejected product rejecting device according to the detection result, and rejecting a detected rejected product through manual work or the rejected product rejecting device.
Furthermore, the chopstick head detection device is a chopstick head detection imaging system arranged on the first horizontal conveying chain, and an annular light source is arranged in front of the chopstick head detection imaging system.
Further, the length detection device is an infrared ray photoelectric sensor which is arranged on the first inclined conveying chain and is electrically connected with the controller.
Further, the thickness detection device comprises a plurality of material pressing induction metal plates and an infrared ray correlation photoelectric sensor which are arranged on the first inclined conveying chain; one side of each pressing induction metal plate is connected with a rotating shaft fixed on the first inclined conveying chain support and can rotate around the rotating shaft, the other end of each pressing induction metal plate is connected with a fixing plate fixed on the first inclined conveying chain support through a tension spring, and a flat plate is arranged below each pressing induction metal plate; the infrared ray pair photoelectric sensor is electrically connected with the controller.
Further, the chopstick body double-side detection device comprises a turnover device for conveying and turning flat chopsticks, a pit detection device and a color spot detection device; the pit detection device comprises a front pit detection device and a back pit detection device which are used for respectively detecting the front surface and the back surface of the flat chopsticks, and the color spot detection device comprises a front color spot detection device and a back color spot detection device which are used for respectively detecting the front surface and the back surface of the flat chopsticks; the turnover device is arranged between the front side color spot detection device and the back side pit detection device and used for turning over the flat chopsticks, so that the double sides of the flat chopsticks can be conveniently detected.
Further, the pit detection device comprises a pit detection imaging mechanism and pit detection light sources positioned on two sides of the pit detection imaging mechanism; the pit detection light source is arranged on the supports on two sides of the turnover device, and the pit detection imaging mechanism is arranged right above the middle of the turnover device.
Further, the color spot detection device comprises a color spot detection imaging mechanism and a color spot detection light source; the color spot detection light sources are arranged on the supports on the two sides of the turnover device and located on the front side and the rear side of the color spot detection imaging mechanism in the conveying direction of the flat chopsticks, and the color spot detection imaging mechanism is arranged right above the middle of the turnover device.
Further, the turnover device comprises a second horizontal transmission chain and a third horizontal transmission chain which are sequentially arranged along the transmission direction of the flat chopsticks; the tail end of the second horizontal conveying chain and the front end of the third horizontal conveying chain are arranged on the same rotating shaft through chain wheels, so that the running linear speeds of the second horizontal conveying chain and the third horizontal conveying chain are the same; two ends of the rotating shaft are fixed on the frame.
Further, the teeth of the second horizontal transmission chain are straight teeth or helical teeth, and the teeth of the third horizontal transmission chain are straight teeth. When the second horizontal transmission chain sprocket adopts the helical teeth and adopts the straight teeth relatively, in the use process, when the flat chopsticks are overturned, the damage degree of the sprocket to the surfaces of the flat chopsticks is small.
The included angle between the second horizontal conveying chain and the third horizontal conveying chain is 165-180 degrees, preferably, the included angle between the second horizontal conveying chain and the third horizontal conveying chain is 180 degrees, namely, the second horizontal conveying chain and the third horizontal conveying chain are horizontally arranged on the rack. When the included angle between the second horizontal transmission chain and the third horizontal transmission chain is smaller than 165 degrees, namely the installation angle between the second horizontal transmission chain or the third horizontal transmission chain and the horizontal direction is larger than 15 degrees, the phenomenon that the flat chopsticks cannot be overturned at the joint of the second horizontal transmission chain and the third horizontal transmission chain easily occurs.
Further, the height of the second horizontal transmission chain sprocket is smaller than that of the third horizontal transmission chain sprocket, the widths of the second horizontal transmission chain sprocket and the third horizontal transmission chain sprocket are equal, and the tooth pitches of the adjacent sprockets are equal. The continuous conveying of the flat chopsticks and the overturning of the flat chopsticks at the connecting part of the second horizontal conveying chain and the third horizontal conveying chain are facilitated.
Furthermore, the height difference between the teeth of the second horizontal transmission chain and the teeth of the third horizontal transmission chain is 0.8-1.2 times of the thickness of the chopsticks.
Further, the height of the second horizontal conveying chain sprocket is 6-20 mm, and preferably, the height of the helical teeth is 8-10 mm. The height of the chain teeth of the third horizontal conveying chain is 10-25 mm, preferably 12-15 mm.
Furthermore, the helical teeth are square with unfilled corners, and the unfilled corners back to the third horizontal conveying chain;
further, the inclination angle of the unfilled corner is 30-60 degrees, and preferably 45 degrees.
Further, the height of the unfilled corner is greater than 1/3 of the width of the helical tooth and is less than or equal to 1/2 of the height of the helical tooth.
Further, the chain wheel comprises a sprocket rotating disc and a rotating shaft connecting seat, and the rotating shaft connecting seat is connected with the middle part of the sprocket rotating disc; the rotating shaft connecting seat is internally provided with a connecting hole which is connected with the rotating shaft and is provided with a clamping groove, and the side wall of the connecting hole is provided with a locking screw hole.
Furthermore, bearing seats are arranged on two sides of the rotating shaft.
Further, the unqualified product removing device comprises a first removing mechanism arranged on the first inclined conveying chain in the descending direction and a second removing mechanism arranged on the second inclined conveying chain connected with a third horizontal conveying chain in the descending direction.
The invention relates to a using method of a special detection device for flat chopsticks, which comprises the following steps: the flat chopsticks pass through the chopstick head detection device under the driving of the first horizontal conveying chain, the detection of the chopstick heads of the flat chopsticks is completed under the chopstick head detection device, then the flat chopsticks enter the first inclined conveying chain and sequentially pass through the length detection device and the thickness detection device, the length and the thickness of the flat chopsticks are completed, the controller generates an eliminating signal to a first eliminating mechanism arranged on the descending direction of the first inclined conveying chain according to the detection results of the chopstick head detection device, the length detection device and the thickness detection device, and the first eliminating mechanism eliminates primary detection unqualified products (such as single chopsticks, slightly large or small branching distance, slightly large or small width of the chopsticks, black spots on the chopstick heads, slightly long or short flat chopsticks or slightly thick or thin chopstick thicknesses and the like) according to the eliminating signal;
the qualified products after the initial detection sequentially enter the second horizontal conveying chain, the pits and the color spots on the front surface of the flat chopsticks are respectively detected by the pit detection device and the color spot detection device which are arranged on the second horizontal conveying chain, then the second horizontal transmission chain and the third horizontal transmission chain are turned over at the joint and then enter the third horizontal transmission chain in turn, pit detection devices and color spot detection devices which are arranged on a third horizontal conveying chain are used for detecting pits and color spots on the reverse side of the flat chopsticks respectively, the pit detection devices and the color spot detection devices generate detection results of pits and color spots of chopstick bodies to a controller, the controller generates rejection signals to a second rejection mechanism which is arranged on the downstream direction of a second inclined conveying chain according to the detection results of the pit detection devices and the color spot detection devices (recheck), and the second rejection mechanism rejects recheck unqualified products according to the rejection signals; and then the quality detection of the flat chopsticks is completed, the automatic and continuous quality detection of the quality of the flat chopsticks is realized, the detection precision is improved, and the working intensity of detection personnel is reduced.
The invention relates to a special detection method for flat chopsticks, which adopts the special detection system for flat chopsticks and comprises the following steps:
initial inspection: detecting the color spots of the chopstick heads, the length and the thickness of the flat chopsticks;
removing unqualified products for initial inspection: rejecting unqualified products for initial inspection through manual work or a first rejecting mechanism;
and (4) rechecking: detecting pits and color spots of the flat chopstick bodies;
rejecting unqualified products after retesting: and rejecting the unqualified products for initial inspection through manual work or a second rejection mechanism.
Further, the primary detection comprises chopstick head detection, flat chopstick length detection and flat chopstick thickness detection which are sequentially carried out along the conveying direction of the flat chopsticks.
Further, the chopstick head detection is completed on the first horizontal conveying chain, and the flat chopstick length detection and the flat chopstick thickness detection are completed on the first inclined conveying chain in the upstream direction at one time.
Further, the rechecking comprises the steps of sequentially carrying out pit detection and color spot detection on the front surface of the chopstick body along the conveying direction of the flat chopsticks, and after the flat chopsticks are turned, carrying out pit detection and color spot detection on the back surface of the flat chopsticks, and finishing on a turning device.
The special detection device for the flat chopsticks has the beneficial effects that: the automatic continuous quality detection device for the flat chopsticks is simple in structure and low in manufacturing cost, realizes automatic and continuous quality detection of the quality of the flat chopsticks, can adjust the standard value range of detection parameters according to different product requirements, improves accuracy and precision of quality detection of the flat chopsticks, reduces working strength of detection personnel, improves efficiency of quality detection of the flat chopsticks, reduces quality detection cost, can finish 500 pieces of chopsticks (each piece contains 3000 pairs of chopsticks) by each equipment every day, finishes quality detection operation of the same number of chopsticks, needs 25 persons to finish chopstick quality detection work in one day by the original traditional production process, and can finish the quality detection by adopting 1 piece of equipment and being provided with 1 operator.
The special detection method for the flat chopsticks has the beneficial effects that: the operation is simple, the automatic and continuous production of the flat chopsticks is convenient, the quality inspection efficiency of the flat chopsticks is improved, and the quality inspection cost is reduced.
Drawings
FIG. 1 is a front view of a detection system (in use) for chopsticks according to the present invention;
FIG. 2 is an attached view of a detection system (in use) for chopsticks according to the present invention;
fig. 3-is an enlarged schematic view of the chopstick head, length and thickness detecting device at a in fig. 2;
FIG. 4 is an enlarged view of the chopstick body double-side detection device at B in FIG. 2;
FIG. 5 is a front view of the turning device in the detection system for chopsticks according to the present invention;
fig. 6 is a top view of the turning device in the detection system for flat chopsticks according to the present invention.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
Example 1
Referring to fig. 1-4, the special detection system for flat chopsticks of this embodiment includes a controller and the following devices that are arranged in sequence along the direction of conveyance of the flat chopsticks:
a chopstick head detection device 1 for detecting parameters such as the branching distance of the chopstick heads of the flat chopsticks, the widths of the chopsticks and the black spots of the chopstick heads;
the length detection device 2 is used for detecting the length and the curvature of the flat chopsticks and sending the detection result to the controller;
the thickness detection device 3 is used for detecting the thickness of the flat chopsticks and sending the detection result to the controller;
the chopstick body double-side detection device is used for detecting parameters such as pits, mildew and the like on the double sides of the chopstick body of the flat chopstick and sending a detection value to the controller;
and the controller is used for receiving detection parameters sent by the chopstick head detection device 1, the length detection device 2, the thickness detection device 3 and the chopstick body double-side detection device, comparing the detection parameters with a set standard value, sending a detection result to a display screen and/or sending an rejecting signal to the unqualified product rejecting device 4 according to the detection result, and rejecting a detected unqualified product through manual work or the unqualified product rejecting device 4.
The chopstick head detection device 1 is a chopstick head detection imaging system 12 arranged on a first horizontal conveying chain, and an annular light source 11 is arranged in front of the chopstick head detection imaging system 12.
The length detection device 2 is an infrared ray photoelectric sensor which is arranged on the first inclined conveying chain and is electrically connected with the controller.
The thickness detection device 3 comprises a plurality of material pressing induction metal plates and an infrared ray correlation photoelectric sensor which are arranged on a first inclined conveying chain; one side of each pressing induction metal plate is connected with a rotating shaft fixed on the first inclined conveying chain support and can rotate around the rotating shaft, the other end of each pressing induction metal plate is connected with a fixing plate fixed on the first inclined conveying chain support through a tension spring, and a flat plate is arranged below each pressing induction metal plate; the infrared ray pair photoelectric sensor is electrically connected with the controller.
The chopstick body double-side detection device comprises a turnover device 7 for conveying and turning flat chopsticks, a pit detection device 5 and a color spot detection device 6; the pit detection device 5 comprises a front pit detection device 51 and a back pit detection device 52 which are used for respectively detecting the front and the back of the flat chopsticks, and the color spot detection device 6 comprises a front color spot detection device 61 and a back color spot detection device 62 which are used for respectively detecting the front and the back of the flat chopsticks; the turnover device 7 is arranged between the front side color spot detection device 61 and the back side pit detection device 52 and is used for turning the flat chopsticks so as to be convenient for detecting the two sides of the flat chopsticks.
The pit detection device 51 comprises a pit detection imaging mechanism 511,521 and pit detection light sources 512,522 positioned at two sides of the detection imaging mechanism; the pit detection light source 512,522 is installed on the supports at both sides of the turnover device 7, and the pit detection imaging mechanism 511,521 is installed right above the middle of the turnover device 7.
The stain detection device 61 includes stain detection imaging means 611,621 and stain detection light sources 612, 622; the color spot detecting light sources 612 and 622 are mounted on the brackets at both sides of the turning device 7 and located at the front and rear sides of the color spot detecting and imaging mechanisms 611 and 621 along the conveying direction of the flat chopsticks, and the color spot detecting and imaging mechanisms 611 and 621 are mounted right above the middle of the turning device 7.
The turnover device 7 comprises a second horizontal transmission chain 75 and a third horizontal transmission chain 73 which are sequentially arranged along the transmission direction of the flat chopsticks 74; the tail end of the second horizontal conveying chain 75 and the front end of the third horizontal conveying chain 73 are arranged on the same rotating shaft 72 through a chain wheel 76, so that the running linear speeds of the two chains are the same; both ends of the rotating shaft 72 are fixed on the frame 8.
Both ends of the rotating shaft 72 are mounted on the frame 8 through bearing blocks 71.
The teeth of the second horizontal transmission chain 75 are helical teeth, and the teeth of the third horizontal transmission chain 73 are straight teeth.
The angle between the second horizontal conveyor chain 75 and the third horizontal conveyor chain 73 is 180 °, i.e. the second horizontal conveyor chain 75 and the third horizontal conveyor chain 73 are mounted horizontally on the frame 8.
The second horizontal transmission chain 75 is positioned in the middle of the third horizontal transmission chain 73, and the distance between the third horizontal transmission chains 73 positioned outside the rack 8 is 5cm smaller than the length of the flat chopsticks 74, so that the transmission stability of the second horizontal transmission chain 75 and the third horizontal transmission chain 73 to the flat chopsticks 74 is ensured.
The height of the teeth of the second horizontal transmission chain 75 is less than that of the teeth of the third horizontal transmission chain 73, the widths of the teeth of the two horizontal transmission chains are equal, and the tooth pitches of the adjacent teeth are equal. Facilitating the continuous transport of the chopsticks 74 and the turning over of the chopsticks 74 at the junction of the second 75 and third 73 horizontal transport chains.
The height difference between the teeth of the second horizontal transmission chain 75 and the third horizontal transmission chain 73 is 1.0 times of the thickness of the chopsticks 74 (the thickness of the chopsticks 74 is 5 mm), namely 5 mm.
The height h1 of the teeth of the second horizontal transmission chain 75 is 8mm, and the height h2 of the teeth of the third horizontal transmission chain 73 is 13 mm.
The helical teeth are square with unfilled corners, and the unfilled corners are back to the third horizontal conveying chain 73;
the inclination angle theta of the unfilled corner is 45 degrees.
The height of the unfilled corner is greater than 1/3 of the width of the helical tooth and less than or equal to 1/2 of the height of the helical tooth.
The chain wheel 76 comprises a sprocket turntable and a rotating shaft 72 connecting seat, and the rotating shaft 72 connecting seat is connected with the middle part of the sprocket turntable; the connecting base of the rotating shaft 72 is internally provided with a connecting hole with a clamping groove connected with the rotating shaft 72, and the side wall of the connecting base is provided with a locking screw hole.
Bearing seats are arranged on two sides of the rotating shaft 72.
The reject removing device 4 includes a first removing mechanism 41 installed in a downward direction of the first inclined conveyor chain and a second removing mechanism 42 connected to the third horizontal conveyor chain 73 in a downward direction of the second inclined conveyor chain.
Example 2
Compared with the embodiment 1, the special detection device for the flat chopsticks has the following differences:
the second horizontal transmission chain 75 is positioned at the outer side of the third horizontal transmission chain 73, and the distance between the second horizontal transmission chains 75 positioned at the outer side of the rack 8 is smaller than the length of the flat chopsticks 74 by 6cm, so that the transmission stability of the second horizontal transmission chain 75 and the third horizontal transmission chain 73 to the flat chopsticks 74 is ensured.
The teeth of the second horizontal conveyor chain 75 are straight teeth, and the teeth of the third horizontal conveyor chain 73 are straight teeth.
The height h1 of the teeth of the second horizontal conveying chain 75 is 9mm, and the height h2 of the teeth of the third horizontal conveying chain 73 is 15 mm; the height difference between the teeth of the second horizontal transmission chain 75 and the third horizontal transmission chain 73 is 1.2 times of the thickness of the chopsticks 74 (the thickness of the chopsticks 74 is 5 mm), namely 6 mm.
The invention relates to a using method of a special detection device for flat chopsticks, which comprises the following steps: the flat chopsticks 74 pass through the chopstick head detection device 1 under the driving of the first horizontal conveying chain, the chopstick heads of the flat chopsticks 74 are detected under the chopstick head detection device 1, then the flat chopsticks enter the first inclined conveying chain and sequentially pass through the length detection device 2 and the thickness detection device 3, the length of the flat chopsticks 74 and the thickness of the flat chopsticks 74 are detected, the controller generates rejection signals to a first rejection mechanism 41 arranged on the descending direction of the first inclined conveying chain according to the detection results of the chopstick head detection device 1, the length detection device 2 and the thickness detection device 3, and the first rejection mechanism 41 rejects primary detection unqualified products (such as single chopsticks, large or small bifurcation distance, large or small width of the flat chopsticks 74, black spots on the chopstick heads, long or short flat chopsticks 74, thick or thin flat chopsticks 74 and the like) according to the rejection signals;
qualified products after primary detection sequentially enter a second horizontal conveying chain 75, pits and color spots on the front side of the flat chopsticks 74 are respectively detected through a pit detection device 51 and a color spot detection device 61 which are arranged on the second horizontal conveying chain 75, then the qualified products are overturned at the connecting part of the second horizontal conveying chain 75 and a third horizontal conveying chain 73, then the qualified products sequentially enter the third horizontal conveying chain 73, pits and color spots on the back side of the flat chopsticks 74 are respectively detected through the pit detection device 51 and the color spot detection device 61 which are arranged on the third horizontal conveying chain 73, the pit detection device 51 and the color spot detection device 61 generate detection results of pits and color spots of the chopstick body to a controller, and the controller generates a rejection signal to a second rejection mechanism 42 which is arranged on the downstream direction of the second inclined conveying chain according to the detection results of the pit detection device 51 and the color spot detection device 61 (recheck), the second rejecting mechanism 42 rejects the rechecked unqualified products according to the rejecting signal; further, the quality detection of the flat chopsticks 74 is completed, the automatic and continuous quality detection of the quality of the flat chopsticks 74 is realized, the detection precision is improved, and the working intensity of detection personnel is reduced.
Example 3
The invention relates to a special detection method for flat chopsticks, which adopts the special detection system for flat chopsticks 74 and comprises the following steps:
initial inspection: detecting the color spots of the chopstick heads, the length and the thickness of the flat chopsticks 74;
removing unqualified products for initial inspection: rejecting unqualified products for initial inspection through a manual or first rejecting mechanism 41;
and (4) rechecking: detecting pits and color spots of the chopstick body of the flat chopsticks 74;
rejecting unqualified products after retesting: the unqualified products for initial inspection are rejected by a manual work or a second rejection mechanism 42.
The initial detection comprises chopstick head detection, length detection of the flat chopsticks 74 and thickness detection of the flat chopsticks 74 which are sequentially carried out along the conveying direction of the flat chopsticks 74.
The chopstick head detection is completed on the first horizontal conveyor chain, and the length detection of the flat chopsticks 74 and the thickness detection of the flat chopsticks 74 are completed in the upstream direction of the first inclined conveyor chain at one time.
The rechecking comprises the steps of sequentially carrying out pit detection and color spot detection on the front surface of the chopstick body along the conveying direction of the flat chopstick 74, and after the flat chopstick 74 is turned, carrying out pit detection and color spot detection on the back surface of the flat chopstick 74, and finishing on the turning device 7.
According to the special detection device for the flat chopsticks, the distance between the second horizontal transmission chain 75 and the third horizontal transmission chain 73 and the height of the teeth of the second horizontal transmission chain 75 and the third horizontal transmission chain 73 can be adjusted according to the length and the thickness of the flat chopsticks 74, so that the distance between the second horizontal transmission chain 75 and the third horizontal transmission chain 73 positioned on the outer side of the rack 8 is smaller than the length of the flat chopsticks 74 by 4cm, 4.5cm, 4.8cm or 5.5 cm; the tooth height h1 of the second horizontal transfer chain 75 may also be 6mm, 10mm, 12mm, 15mm, 18mm or 20 mm; the tooth height h2 of the third horizontal transmission chain 73 may also be 10mm, 12mm, 18mm, 20mm, 22mm or 25 mm; the inclination angle theta of the unfilled corner can also be 30 degrees, 50 degrees or 60 degrees; the above technical features may be understood and implemented by those skilled in the art through the text description, and thus, not described in the figures.

Claims (8)

1. The special detection system for the flat chopsticks is characterized by comprising a controller and the following devices which are sequentially arranged along the conveying direction of the flat chopsticks:
the chopstick head detection device is used for detecting the branching distance of the chopstick heads of the flat chopsticks, the widths of the chopsticks and the black spots of the chopstick heads;
the length detection device is used for detecting the length and the curvature of the flat chopsticks and sending the detection result to the controller;
the thickness detection device is used for detecting the thickness of the flat chopsticks and sending the detection result to the controller;
the chopstick body double-side detection device is used for detecting pits and mildew on the double sides of the chopstick body of the flat chopsticks and sending detection values to the controller;
the controller receives detection parameters sent by the chopstick head detection device, the length detection device, the thickness detection device and the chopstick body double-side detection device, compares the detection parameters with a set standard value, sends a detection result to the display screen and/or sends an elimination signal to the unqualified product elimination device according to the detection result, and eliminates the unqualified products for detection through manual work or the unqualified product elimination device;
the chopstick body double-side detection device comprises a turnover device, a pit detection device and a color spot detection device, wherein the turnover device is used for conveying and turning flat chopsticks; the pit detection device comprises a front pit detection device and a back pit detection device which are used for respectively detecting the front surface and the back surface of the flat chopsticks, and the color spot detection device comprises a front color spot detection device and a back color spot detection device which are used for respectively detecting the front surface and the back surface of the flat chopsticks;
the overturning device is arranged between the front side color spot detection device and the back side pit detection device and is used for overturning the flat chopsticks so as to facilitate the detection of the two sides of the flat chopsticks; the turnover device comprises a second horizontal transmission chain and a third horizontal transmission chain which are sequentially arranged along the transmission direction of the flat chopsticks; the tail end of the second horizontal conveying chain and the front end of the third horizontal conveying chain are arranged on the same rotating shaft through chain wheels, so that the running linear speeds of the second horizontal conveying chain and the third horizontal conveying chain are the same; bearing seats are also arranged at two ends of the rotating shaft, and two ends of the rotating shaft are fixed on the rack through the bearing seats; the teeth of the second horizontal conveying chain are straight teeth or helical teeth, and the teeth of the third horizontal conveying chain are straight teeth; the height of the second horizontal transmission chain sprocket is smaller than that of the third horizontal transmission chain sprocket, the widths of the second horizontal transmission chain sprocket and the third horizontal transmission chain sprocket are equal, and the tooth pitches of adjacent sprockets are equal.
2. The system as claimed in claim 1, wherein the chopstick head detecting device is a chopstick head detecting and imaging system installed on the first horizontal conveying chain, and an annular light source is installed in front of the chopstick head detecting and imaging system.
3. The special detection system for the flat chopsticks as claimed in claim 1, wherein the length detection device is an infrared ray photoelectric sensor installed on the first inclined conveyor chain and electrically connected with the controller.
4. The special detection system for the flat chopsticks according to claim 1, wherein the thickness detection device comprises a plurality of material sensing metal plates and an infrared ray correlation photoelectric sensor which are arranged on the first inclined conveying chain; one side of each pressing induction metal plate is connected with a rotating shaft fixed on the first inclined conveying chain support and can rotate around the rotating shaft, the other end of each pressing induction metal plate is connected with a fixing plate fixed on the first inclined conveying chain support through a tension spring, and a flat plate is arranged below each pressing induction metal plate; the infrared ray pair photoelectric sensor is electrically connected with the controller.
5. The system for detecting the chopsticks as claimed in claim 1, wherein said pit detection device comprises a pit detection imaging mechanism and pit detection light sources located at two sides of the detection imaging mechanism; the pit detection light source is arranged on the supports on two sides of the turnover device, and the pit detection imaging mechanism is arranged right above the middle of the turnover device.
6. The system for detecting the chopsticks as claimed in claim 1, wherein the color spot detecting device comprises a color spot detecting imaging mechanism and a color spot detecting light source; the color spot detection light sources are arranged on the supports on the two sides of the turnover device and located on the front side and the rear side of the color spot detection imaging mechanism in the conveying direction of the flat chopsticks, and the color spot detection imaging mechanism is arranged right above the middle of the turnover device.
7. A special detection method for the flat chopsticks, which adopts the special detection system for the flat chopsticks as claimed in any one of claims 1 to 6, comprises the following steps:
initial inspection: detecting the color spots of the chopstick heads, the length and the thickness of the flat chopsticks;
removing unqualified products for initial inspection: rejecting unqualified products for initial inspection through manual work or a first rejecting mechanism;
and (4) rechecking: detecting pits and color spots of the flat chopstick bodies;
rejecting unqualified products after retesting: and rejecting the unqualified products for initial inspection through manual work or a second rejection mechanism.
8. The special detection method for the flat chopsticks as claimed in claim 7, wherein the initial detection comprises chopstick head detection, length detection and thickness detection sequentially along the conveying direction of the flat chopsticks; the chopstick head detection is completed on the first horizontal conveying chain, and the flat chopstick length detection and the flat chopstick thickness detection are completed on the first inclined conveying chain in the uplink direction at one time; and the rechecking comprises the steps of sequentially carrying out pit detection and color spot detection on the front surface of the chopstick body along the conveying direction of the flat chopstick, and carrying out pit detection and color spot detection on the back surface of the flat chopstick after the flat chopstick is turned over, and finishing on a turning device.
CN201611208317.XA 2016-12-23 2016-12-23 Special detection system and method for flat chopsticks Active CN106733696B (en)

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CN107413663A (en) * 2017-06-27 2017-12-01 长沙世通纸塑箸业有限公司 A kind of chopsticks sort primary election machine

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EP1389594A2 (en) * 2002-08-14 2004-02-18 Oy Foudila Ab Device for overturning sawn timber
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CN206454923U (en) * 2016-12-23 2017-09-01 长沙世通纸塑箸业有限公司 A kind of flat chopsticks dedicated test system

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JPH05281152A (en) * 1992-03-31 1993-10-29 Otari Kk Article inspecting apparatus
JPH09328109A (en) * 1996-06-07 1997-12-22 Ibaraki Seiki Kk Method for delivering disposable wooden chopsticks in alignment
EP1389594A2 (en) * 2002-08-14 2004-02-18 Oy Foudila Ab Device for overturning sawn timber
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CN206454923U (en) * 2016-12-23 2017-09-01 长沙世通纸塑箸业有限公司 A kind of flat chopsticks dedicated test system

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