CN108455219B - Method and device for detecting and adjusting skew of object on conveyor belt - Google Patents
Method and device for detecting and adjusting skew of object on conveyor belt Download PDFInfo
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- CN108455219B CN108455219B CN201810147855.5A CN201810147855A CN108455219B CN 108455219 B CN108455219 B CN 108455219B CN 201810147855 A CN201810147855 A CN 201810147855A CN 108455219 B CN108455219 B CN 108455219B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0294—Vehicle bodies
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Abstract
The invention relates to a method and a device for detecting and adjusting the skew of an object on a conveyor belt, belonging to the technical field of object detection. The technical scheme is as follows: the objects are placed on two conveyor belts which are arranged in parallel and move in the same direction for conveying; the two side surfaces of each conveyor belt are respectively provided with a pair of detection sensors which are matched with each other and a control device which is connected with the detection sensors, when an object is skewed, the detection sensors send signals to the control device, the control device sends signals to stop the conveyor belt on which the object is skewed, and when the object on the other conveyor belt starts to shield the detection sensor on the side surface of the conveyor belt, the control device sends signals to the control device, so that the conveyor belt which detects the object skew for the first time is started to operate from a stop state, and the skew adjustment of the object is achieved. The invention improves the running safety and reliability of the conveyor belt conveying line or the production line.
Description
Technical Field
The invention relates to a method and a device for detecting and adjusting the skew of an object on a conveyor belt, belonging to the technical field of object detection. In particular to a method and a device for detecting object deflection on a conveyor belt in the industries of warehouse storage, logistics transportation, three-dimensional warehouse storage, automobile three-dimensional parking garage, automobile production line, mechanical equipment product production line, food production line, electronic product production line, wharf, coal mine and the like. These objects include: storage tray, storage bracket, storage tank, car, food finished product packing carton, electronic product finished product packing carton, equipment transmission lines such as container.
Background
The mode that two parallel arranged and equidirectional moving conveyor belts or crawler belts are used for conveying objects or materials is widely applied to industries such as warehouse, logistics conveying, three-dimensional warehouse, automobile three-dimensional parking garage, automobile production line, mechanical equipment product production line, food production line, electronic product production line, wharf, coal mine and the like.
Disclosure of Invention
The invention aims to provide a method and a device for detecting and adjusting the deflection of an object on a conveyor belt, which can adjust the object on the conveyor belt in time when the object is deflected; the longitudinal deviation generated by a plurality of times of skew adjustment can automatically perform the skew adjustment in the opposite direction through a software program and a control method which are arranged in a detection or detection device so as to remove the longitudinal deviation of the object, effectively improve the running safety performance and reliability of the conveyor belt and the production line thereof, and effectively solve the problems in the background technology.
The technical scheme of the invention is as follows: a method of skew detection and adjustment of objects on a conveyor belt, comprising the steps of:
the object is placed on two parallel conveyer belts which move in the same direction for conveying, and each conveyer belt is driven independently and can run in the forward and reverse directions; the method comprises the steps that a pair of detection sensors which are matched with each other and a control device connected with the detection sensors are respectively arranged on two side faces of each conveyor belt, when an object is skewed, the detection sensors send signals to the control device, the control device sends signals to stop the conveyor belt on which the object is skewed, when the object on the other conveyor belt starts to shield the detection sensors on the side faces of the conveyor belts, the object is perpendicular to the two conveyor belts at the moment, the skew of the object is adjusted, and the control device sends signals to the control device, so that the conveyor belt on which the skew of the object is detected for the first time is started to run from a stop state, and the skew of the object is adjusted.
The inner side and the outer side of the two conveyor belts are provided with four detection sensors.
The four detection sensors are respectively arranged on the mounting bracket, and the mounting positions are required to be on a straight line and are as vertical as possible to the running direction of the conveyor belt; the mounting positions of the detection sensors on the outer sides of the two conveyor belts are higher than the conveyed objects, and the mounting positions of the detection sensors on the inner sides of the two conveyor belts are arranged in the middle parts of the two conveyor belts and are approximately in the same horizontal plane with the conveyor belts, so that the objects are prevented from being scratched; the specific installation position of the detection sensor is matched with the sizes of the conveyor belt and the conveyed object.
Two groups of over-length detection sensors are respectively arranged at two longitudinal sides of the conveyor belt, when one group of over-length detection sensors at the inner side act, the conveyor belt at the side of the early warning action stops for a period of time and continues to run, and when the conveyor belt passes through the next skew detection point, corresponding skew adjustment is carried out so as to correct longitudinal over-limit; when the group of the overlong detection sensors on the outer side acts, the conveyor belt stops running.
After skew adjustment is performed twice or three times each time, skew generation in the opposite direction is performed once during normal conveying traveling, and skew adjustment is performed again after next skew detection.
The skew detection and adjustment device of the object on the conveyor belt comprises the conveyor belt, a conveyor belt driving motor, a detection sensor, a detection device and an upper controller, wherein a detection signal of the detection sensor is connected with the detection device; the detection device is an electronic device and consists of a PLC (programmable logic controller), a singlechip control system, an embedded control system, an industrial personal computer, a microcomputer controller and a relay circuit; the detection device is connected with the upper controller; the conveyer belt is two, parallel arrangement, equidirectional motion, but every conveyer belt individual drive, forward and reverse operation, installs a pair of detection sensor that matches each other and the controlling means who connects detection sensor respectively in two sides of each conveyer belt, and the inside and outside both sides of two conveyer belts set up four detection sensor altogether.
The conveying belt is one of a belt conveyor, a rubber belt conveyor, a crawler belt, a rubber conveying belt, a plate conveying belt or a chain conveying belt.
The two conveyor belt driving motors are respectively connected with the two conveyor belts, and each conveyor belt driving motor is provided with an independent starting, stopping and forward and reverse running structure.
The detection sensor is one of an infrared correlation tube sensor, an infrared distance measurement sensor or an ultrasonic sensor and comprises matched interface equipment.
The invention has the beneficial effects that: fills the gap of the modern technology, is simple and easy to operate, and effectively improves the running safety performance and reliability of the conveyor belt and the production line thereof.
Drawings
FIG. 1 is a diagram of a use environment for the present invention;
FIG. 2 is a front view of the detection sensor of the present invention installed;
FIG. 3 is a side view of the detection sensor of the present invention installed;
FIG. 4 is a diagram of the inclined state of the side A of the object on the conveyor belt of the present invention;
FIG. 5 is a schematic view of the present invention of the conveyor belt with the side of the object A tilted;
FIG. 6 is a diagram illustrating a state where the object inclination adjustment on the conveyor belt of the present invention is completed;
fig. 7 is a diagram of the state in which the side of the object B on the conveyor belt of the present invention is tilted;
FIG. 8 is a schematic view of the longitudinal offset of objects on the conveyor belt of the present invention;
FIG. 9 is a schematic view of the present invention utilizing a longitudinally disposed sensor for longitudinal adjustment of the tilt of an object on a conveyor belt;
fig. 10 is a schematic view of the invention utilizing artificial skew to longitudinally adjust the tilt of an object on a conveyor belt.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
A method of skew detection and adjustment of objects on a conveyor belt, comprising the steps of:
the object is placed on two parallel conveyer belts which move in the same direction for conveying, and each conveyer belt is driven independently and can run in the forward and reverse directions; the method comprises the steps that a pair of detection sensors which are matched with each other and a control device connected with the detection sensors are respectively arranged on two side faces of each conveyor belt, when an object is skewed, the detection sensors send signals to the control device, the control device sends signals to stop the conveyor belt on which the object is skewed, when the object on the other conveyor belt starts to shield the detection sensors on the side faces of the conveyor belts, the object is perpendicular to the two conveyor belts at the moment, the skew of the object is adjusted, and the control device sends signals to the control device, so that the conveyor belt on which the skew of the object is detected for the first time is started to run from a stop state, and the skew of the object is adjusted.
The inner side and the outer side of the two conveyor belts are provided with four detection sensors.
The four detection sensors are respectively arranged on the mounting bracket, and the mounting positions are required to be on a straight line and are as vertical as possible to the running direction of the conveyor belt; the mounting positions of the detection sensors on the outer sides of the two conveyor belts are higher than the conveyed objects, and the mounting positions of the detection sensors on the inner sides of the two conveyor belts are arranged in the middle parts of the two conveyor belts and are approximately in the same horizontal plane with the conveyor belts, so that the objects are prevented from being scratched; the specific installation position of the detection sensor is matched with the sizes of the conveyor belt and the conveyed object.
Two groups of over-length detection sensors are respectively arranged at two longitudinal sides of the conveyor belt, when one group of over-length detection sensors at the inner side act, the conveyor belt at the side of the early warning action stops for a period of time and continues to run, and when the conveyor belt passes through the next skew detection point, corresponding skew adjustment is carried out so as to correct longitudinal over-limit; when the group of the overlong detection sensors on the outer side acts, the conveyor belt stops running.
After skew adjustment is performed twice or three times each time, skew generation in the opposite direction is performed once during normal conveying traveling, and skew adjustment is performed again after next skew detection.
The skew detection and adjustment device of the object on the conveyor belt comprises the conveyor belt, a conveyor belt driving motor, a detection sensor, a detection device and an upper controller, wherein a detection signal of the detection sensor is connected with the detection device; the detection device is an electronic device and consists of a PLC (programmable logic controller), a singlechip control system, an embedded control system, an industrial personal computer, a microcomputer controller and a relay circuit; the detection device is connected with the upper controller; the two conveyor belts are arranged in parallel and move in the same direction, and each conveyor belt is independently driven and can run in the forward and reverse directions; a pair of detection sensors which are matched with each other and a control device for connecting the detection sensors are respectively arranged on two side surfaces of each conveyor belt, and four detection sensors are arranged on the inner side and the outer side of each conveyor belt.
The conveying belt is one of a belt conveyor, a rubber belt conveyor, a crawler belt, a rubber conveying belt, a plate conveying belt or a chain conveying belt.
The two conveyor belt driving motors are respectively connected with the two conveyor belts, and each conveyor belt driving motor is provided with an independent starting, stopping and forward and reverse running structure. When one of the conveyor belts fails, the two conveyor belts stop running simultaneously.
The detection sensor is one of an infrared correlation tube sensor, an infrared distance measurement sensor or an ultrasonic sensor and comprises matched interface equipment.
In practical application, as shown in fig. 1, the invention is used for the application of two conveyor belts or crawler belts on a mechanical device for conveying an object, and the two conveyor belts or crawler belts can be driven to operate independently. The objects may be automobiles, material storage and transportation containers, or material pallets.
Detection sensors (including infrared ray correlation tube sensors, ultrasonic sensors, and the like) are provided on the inner side and the outer side of each conveyor belt, a1 and a2 are a pair of detection sensors for detecting the skew of the conveyor belt a, and B1 and B2 are a pair of detection sensors for detecting the skew of the conveyor belt B. The a1, a2, b1 and b2 detection sensors are respectively arranged on the mounting brackets, the mounting positions of a1 and b1 are higher than the conveyed object, the mounting positions of a2 and b2 are arranged in the middle of the two conveyor belts and are approximately in the same horizontal plane with the conveyor belts, the specific mounting positions are determined according to the sizes of the conveyor belts and the conveyed object, and the detection distances of the detection sensors are selected according to the sizes of the conveyor belts and the conveyed object. The installation schematic diagrams of a1, a2, b1 and b2 are shown in fig. 2 and fig. 3, based on the principle that when an object is skewed, detection light or sound waves between detection sensors can be reliably shielded without influencing the operation of the conveyor belt and the transmission of the object thereon.
When the object on the conveyor belt is in the conveying process and the side a is skewed, as shown in fig. 4, the object firstly shields the detection sensors a1 and a2, namely the detection sensors a1 and a2 act to output signals in the conveying process, at this time, the detection device outputs signals to stop the conveyor belt a and continue to run the conveyor belt B until the detection sensors B1 and B2 are shielded, as shown in fig. 5, namely the detection sensors B1 and B2 act to output signals, at this time, the detection device outputs signals to run the conveyor belt a and the conveyor belt B continues to run, so that the object skewed on the side a is adjusted as shown in fig. 6.
Similarly, when the side B is skewed, as shown in fig. 7, during the conveying process, the object firstly blocks the output signals of the detection sensors B1 and B2, that is, the detection sensors B1 and B2, at this time, the detection device outputs a signal to stop the conveyor belt B from running, and the conveyor belt a continues to run until the detection sensors a1 and a2 are blocked, as shown in fig. 4, that is, the detection sensors a1 and a2 output signals, at this time, the conveyor belt B runs through the output signal of the detection device, and the conveyor belt a continues to run, so that the object with the skew side B is adjusted as shown in fig. 6.
Because the side of a front wheel of a conveying belt for conveying some large objects, such as automobiles in an automobile parking garage, is heavier than the side of a rear wheel, one side of the object (such as an automobile) always tilts in one direction during the handover between the conveying belt and the conveying belt or chattering in the conveying process, although the tilting adjustment is continuously carried out, accumulated offset can be generated for many times, the longitudinal offset is caused to move in one direction, and the conveyed object (such as the automobile) exceeds the longitudinal allowable range, so that scraping is caused, and even the conveying belt stops due to faults. As shown in fig. 8.
Therefore, the invention provides a solution: firstly, two groups of over-length detection sensors are respectively arranged on the side A and the side B in the longitudinal direction of the conveyor belt to serve as object over-length early warning c2 and d2 and over-length warning c1 and d 1. When the early warning detection sensor c2 or d2 operates, even if the object is not skewed, skew adjustment is performed once, but in the opposite direction, namely: the conveyor belt on the side of the pre-warning action is stopped for a period of time (typically a few seconds depending on the conveyor belt speed, size, mass and shape of the conveyed object; or until the skew pre-warning detection sensor is deactivated), the stopped conveyor belt continues to run again, where it is artificially skewed, and when it passes the next skew detection point, a corresponding skew adjustment is made to correct the longitudinal overrun, as shown in fig. 9. When the longitudinal overlength early warnings c2 and d2 act, the conveyor belt can run and skew adjustment is carried out, and when the overlength warnings c1 and d1 act and alarm, the conveyor belts A and B must stop to prevent the occurrence of accidents of object scraping or falling.
Secondly, without the longitudinal deviation detecting sensors c1, d1, c2 and d2, after every skew adjustment is carried out twice or three times, in the same way as above, in the normal conveying process, the skew generation in the opposite direction is carried out, and the skew adjustment is carried out again when the next skew detection is carried out, so as to correct the longitudinal accumulated deviation. As shown in fig. 10.
The detection sensors a1, a2, b1 and b2 for detection are required to be arranged on a straight line and are as vertical as possible to the running direction of the conveyor belt; a1 and a2 are a pair of detection sensors for detecting the skew of the conveyor belt a, and B1 and B2 are a pair of detection sensors for detecting the skew of the conveyor belt B; the a1, a2, b1 and b2 detection sensors are respectively arranged on a mounting bracket, the mounting positions of a1 and b1 are higher than the conveyed objects, the mounting positions of a2 and b2 are arranged in the middle of two conveyor belts and are approximately at the same level with the conveyor belts, so that the objects are prevented from being scratched, the specific mounting positions are determined according to the sizes of the conveyor belts and the conveyed objects, the detection distances of the detection sensors are selected according to the sizes of the conveyor belts and the conveyed objects, when the objects are skewed, detection light or sound waves among the detection sensors can be reliably shielded, the operation of the conveyor belts and the conveying of the objects on the conveyor belts are not influenced, and therefore skew detection and adjustment of the objects can reach the optimal condition. The control device for skew detection is an electronic device, has small overall dimension, can be arranged in the space of the conveyor belt and the electric control equipment and can also be incorporated into a conveyor belt control system.
In the skew detection and adjustment process, the control device sends out a control signal according to the skew condition of the object to drive the conveyor belt (crawler belt) to do skew adjustment or skew adjustment in the opposite direction so as to reduce the longitudinal displacement of the object and other actions.
The above is described for the unidirectional operation of the conveyor belt, and if the apparatus allows the conveyor belt to operate bidirectionally, i.e. in forward and reverse directions, the detection and adjustment of the skew of the object can also be performed according to the above method.
The technical scheme fills the gap of the modern technology, is simple and easy to operate, can arrange a plurality of skew detection points on a long-distance conveying belt or a place which is easy to skew, and improves the safety performance and the reliability of the operation of the conveying belt.
Claims (4)
1. A method of detecting and adjusting skew of objects on a conveyor belt, comprising the steps of: the object is placed on two parallel conveyer belts which move in the same direction for conveying, and each conveyer belt is driven independently and can run in the forward and reverse directions; the method comprises the steps that a pair of detection sensors which are matched with each other and a control device connected with the detection sensors are respectively arranged on two side faces of each conveyor belt, when an object is skewed, the detection sensors send signals to the control device, the control device sends signals to stop the conveyor belt on which the object is skewed, when the object on the other conveyor belt starts to shield the detection sensors on the side faces of the conveyor belts, the object is vertical to the two conveyor belts at the moment, the skew of the object is adjusted, and the control device sends signals to the control device, so that the conveyor belt on which the skew of the object is detected for the first time is started to run from a stop state, and the skew of the object is adjusted; the inner side and the outer side of the two conveyor belts are provided with four detection sensors; the four detection sensors are respectively arranged on the mounting bracket, and the mounting positions are required to be on a straight line and are vertical to the running direction of the conveyor belt; the mounting positions of the detection sensors on the outer sides of the two conveyor belts are higher than the conveyed object, and the mounting positions of the detection sensors on the inner sides of the two conveyor belts are arranged in the middle of the two conveyor belts and are in a horizontal plane with the conveyor belts; the specific installation position of the detection sensor is matched with the sizes of the conveyor belt and the conveyed object; two groups of over-length detection sensors are respectively arranged at two longitudinal sides of the conveyor belt, when one group of over-length detection sensors at the inner side act, the conveyor belt at the side of the early warning action stops for a period of time and continues to run, and when the conveyor belt passes through the next skew detection point, corresponding skew adjustment is carried out so as to correct longitudinal over-limit; when a group of the overlong detection sensors on the outer side act, the conveyor belt stops running; when the longitudinal deviation detecting sensor is not arranged, after skew adjustment is carried out for two or three times each time, skew adjustment in the opposite direction is carried out once in normal conveying advancing, and skew adjustment is carried out again to the next skew detecting point.
2. A skew detection and adjustment device for objects on a conveyor belt, using the method as defined in claim 1, characterized in that: the device comprises a conveyor belt, a conveyor belt driving motor, a detection sensor, a detection device and an upper controller, wherein a detection signal of the detection sensor is connected with the detection device; the detection device is an electronic device and consists of a PLC (programmable logic controller), a singlechip control system, an embedded control system, an industrial personal computer, a microcomputer controller and a relay circuit; the detection device is connected with the upper controller; the two conveyor belts are arranged in parallel and move in the same direction, and each conveyor belt is independently driven and can run in the forward and reverse directions; a pair of detection sensors which are matched with each other and a control device for connecting the detection sensors are respectively arranged on two side surfaces of each conveyor belt, and four detection sensors are arranged on the inner side and the outer side of each conveyor belt.
3. A skew detection and adjustment apparatus for objects on a conveyor belt as in claim 2 wherein: the conveying belt is one of a belt conveyor, a rubber belt conveyor, a crawler belt, a rubber conveying belt, a plate conveying belt or a chain conveying belt.
4. A skew detection and adjustment apparatus for objects on a conveyor belt as in claim 2 wherein: the two conveyor belt driving motors are respectively connected with the two conveyor belts, and each conveyor belt driving motor is provided with an independent starting, stopping and forward and reverse running structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810147855.5A CN108455219B (en) | 2018-02-13 | 2018-02-13 | Method and device for detecting and adjusting skew of object on conveyor belt |
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| CN201810147855.5A CN108455219B (en) | 2018-02-13 | 2018-02-13 | Method and device for detecting and adjusting skew of object on conveyor belt |
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| CN108455219B true CN108455219B (en) | 2021-08-31 |
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| CN109230512A (en) * | 2018-09-26 | 2019-01-18 | 江苏宝昊机械设备科技有限公司 | A kind of wiring board unloader |
| CN109515844B (en) * | 2018-11-14 | 2021-09-14 | 龙岩烟草工业有限责任公司 | Cigarette bar posture correction device and method |
| CN109533809A (en) * | 2018-11-27 | 2019-03-29 | 广东科达洁能股份有限公司 | A kind of pair of transmission deviation correcting device and its method for correcting error |
| CN114476585B (en) * | 2022-03-15 | 2023-12-15 | 英特尔产品（成都）有限公司 | Presence detection device |
| CN115005483A (en) * | 2022-06-06 | 2022-09-06 | 河北白沙烟草有限责任公司 | Automatic cigarette packet feature identification control system and using method thereof |
| CN117647546B (en) * | 2024-01-29 | 2024-05-07 | 浙江华视智检科技有限公司 | Security check imaging method and related device |
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