Fish scale detection alarm device and detection alarm method for fish scale baking machine

Abstract

The invention discloses a fish scale detection alarm device and a detection alarm method for a slice roasting machine, belonging to the technical field of tobacco processing equipment. The invention detects the deformation of fish scales by using a laser range-finding sensor, drives the sensor to move up and down by a lifting cylinder to completely detect the whole fish scale, distinguishes the degree of deformation of the fish scale, and automatically determines whether the fish scale is damaged in a single piece or in a series of pieces, so that the staff can find slightly deformed fish scales in advance and deal with them in time, thereby reducing the equipment maintenance cost and improving the stability of equipment operation.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco processing equipment, and more specifically relates to a fish scale detection alarm device and a detection alarm method for a slice roasting machine. Background Art

[0002] The tobacco leaves processed by the baking machine are conveyed by stainless steel mesh belts. The side plates of the mesh belt chain are fish scales. The total length of the mesh belt is 130 meters, which is spliced ​​by 20cm chains. A total of 1,300 fish scales are installed on both sides of the mesh belt. Due to obstacles when the mesh belt is running, tobacco leaves and tobacco stems are blocked, causing the fish scales to fall sideways, deform, and be damaged, resulting in damage to the conveying mesh plate chain and inability to operate. It will also cause the chain to derail and break, which will seriously affect the operation of the baking machine. Due to the long conveyor chain of the baking machine and the large number of fish scales, it is not easy to find and repair them in time, resulting in large-scale damage caused by the mutual squeezing of fish scales, affecting the normal operation of the equipment.

[0003] Existing fish scale detection methods are often unable to comprehensively detect the degree of fish scale deformation and can only realize single-point detection of fish scales. Therefore, it is impossible to detect slight deformation in the early stage of failure and clean up foreign objects stuck in the fish scales in time, resulting in complete damage and replacement of the fish scales, increasing equipment maintenance costs and equipment operation risks. Summary of the invention

[0004] In order to overcome the problems existing in the background technology, the patent of the present invention provides a fish scale detection alarm device and a detection alarm method for a slice grilling machine, which can comprehensively detect and distinguish the degree of deformation of the fish scales, and determine whether the fish scales are damaged in a single piece or in a series of pieces, so that the staff can find slightly deformed fish scales in advance and deal with them in time, thereby reducing the equipment maintenance cost and improving the stability of equipment operation.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a fish scale detection alarm device for a slicer grill, comprising a laser distance sensor, a lifting cylinder, a bearing encoder, a marking liquid storage tank, a marking nozzle, a PLC controller, and a display screen. The laser distance sensor is arranged in a conveyor mesh frame through a lifting cylinder, and the lifting cylinder drives the laser distance sensor to move up and down. The detection surface of the laser distance sensor faces the fish scale plate of the conveyor mesh, and the bearing encoder is arranged on the conveyor mesh motor bearing. The marking liquid storage tank is connected to the marking nozzle, and the marking nozzle faces the fish scale plate of the conveyor mesh. The PLC controller is connected to the laser distance sensor, the lifting motor, the bearing encoder, the marking nozzle, and the display screen. Further, the laser distance sensor is arranged on the upper and lower sides of the conveyor mesh through a lifting motor.

[0006] Furthermore, a magnetic induction mark is arranged on the conveyor mesh belt, and a magnetic induction sensor is arranged on the outer side of the conveyor mesh belt, and the magnetic induction sensor is connected to the PLC controller.

[0007] Furthermore, the marking liquid in the marking liquid storage tank is tobacco stem grinding liquid.

[0008] A fish scale detection and alarm method for a fish scale baking machine comprises the following steps: step 1, setting the length of the fish scale, so that the standard length of the fish scale is associated with the bearing encoder, and numbering each fish scale according to the encoder distance data; step 2, a laser distance measuring sensor detects the interval distance data between the fish scale and the initial horizontal line of the sensor, and calculates the mean, maximum and minimum values ​​of a single fish scale according to the interval distance data; step 3, after the conveyor belt rotates one circle, the lifting cylinder drives the laser sensor to move, detects the interval distance between the remaining horizontal lines of the fish scale and the sensor, and calculates the mean, maximum and minimum values ​​of a single fish scale according to the interval distance data; step 4, counting the mean data of three connected fish scales; step 5, according to the single mean, maximum, minimum and connected mean data of the fish scale, substituting them into the judgment logic, judging whether the fish scale is damaged individually or continuously, and outputting the number of the damaged fish scale; step 6, driving the marking nozzle to mark the damaged fish scale.

[0009] Furthermore, the judgment logic of step five is: setting an inward tilt threshold, an outward tilt threshold, and a continuous piece mean interval; if the difference between the mean of a single fish scale and the minimum value of a single fish scale is less than the inward tilt threshold, the single fish scale is judged to be inward tilted; if the difference between the maximum value of a single fish scale and the mean of a single fish scale is greater than the outward tilt threshold, the single fish scale is judged to be outward tilted; if the continuous piece mean data of the fish scale does not fall into the continuous piece mean interval, it is judged that the fish scale is continuously damaged.

[0010] Furthermore, in the step three, after the conveyor belt rotates one circle, it is determined whether the distance between the laser ranging sensor and the fish scale with the magnetic mark is in a normal initial range. If the distance does not fall into the normal range, the laser ranging sensor is calibrated.

[0011] The beneficial effects of the present invention are as follows: the deformation of fish scales is detected by a laser ranging sensor, and the sensor is driven up and down by a lifting cylinder to completely detect the entire fish scale, distinguish the degree of deformation of the fish scales, and automatically judge whether the fish scales are damaged individually or in combination, so that the staff can find slightly deformed fish scales in advance and deal with them in time, thereby reducing the equipment maintenance cost and improving the stability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a circuit diagram of the present invention.

[0014] In the figure, 1-laser distance measuring sensor, 2-lifting cylinder, 3-bearing encoder, 4-marking liquid storage tank, 5-marking nozzle, 6-magnetic marker, 7-magnetic sensor, 8-display screen, 9-PLC controller. DETAILED DESCRIPTION

[0015] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0016] like Figure 1-2 As shown, a fish scale detection alarm device for a grilling machine includes a laser distance sensor 1, a lifting cylinder 2, a bearing encoder 3, a marking liquid storage tank 4, a marking nozzle 5, a PLC controller 9, and a display screen 8. The laser distance sensor 1 is set in the conveyor mesh frame through the lifting cylinder 2. The laser distance sensor 1 is set at the active end of the lifting cylinder 2. The lifting cylinder 2 drives the laser distance sensor 1 to move up and down. The detection surface of the laser distance sensor 1 is facing the fish scale plate of the conveyor mesh. The laser distance sensor 1 measures in a point shape and cannot fully detect the deformation degree of the entire fish scale. Therefore, the laser distance sensor 1 is driven by the lifting cylinder 2 to move up and down to detect the entire fish scale. The bearing encoder 3 is set on the conveyor mesh motor bearing. The staff sets the length of the fish scale so that the standard length of the fish scale is associated with the bearing encoder. Each fish scale is numbered according to the encoder distance data, which is convenient for later confirmation of damaged fish scales. The marking liquid storage tank 4 is connected to the marking nozzle 5, and the marking nozzle 5 is facing the fish scales on the conveyor net. When the fish scales are judged to be damaged, the PLC controller 9 sprays the marking liquid to the damaged fish scales according to the number of the damaged fish scales, so as to facilitate the staff to replace and repair them later.

[0017] Furthermore, the laser distance measuring sensor 1 is respectively arranged on the upper and lower sides of the conveyor belt through the lifting motor 2. The upper laser distance measuring sensor 1 detects the outer edge of the fish scales, and the lower laser distance measuring sensor 1 detects the inner edge of the fish scales. The deformation of two horizontal lines can be measured when the conveyor belt rotates one circle.

[0018] Furthermore, a magnetic induction mark 6 is provided on the conveyor mesh belt, and a magnetic induction sensor 7 is provided on the outer side of the conveyor mesh belt, and the magnetic induction sensor 7 is connected to the PLC controller 9. The first fish scale is marked by the magnetic induction mark 6 and the magnetic induction sensor 7, and when the marked fish scale passes the magnetic induction sensor 7, the PLC controller 9 determines that the conveyor belt runs one circle.

[0019] Furthermore, the marking liquid in the marking liquid storage tank 3 is a tobacco stem grinding liquid. Because the temperature in the slice roasting machine is relatively high, and no foreign matter is allowed to contaminate the processed tobacco leaves in cigarette production, the tobacco stem grinding liquid is yellow-brown in color, the marking color is eye-catching, and will not contaminate the processed tobacco leaves. The grinding liquid evaporates at high temperature and is easy to adhere to the fish scales, so the tobacco stem grinding liquid is selected as the marker.

[0020] This embodiment also provides a fish scale detection alarm method for a slice baking machine, comprising the following steps:

[0021] Step 1, set the length of the fish scale, associate the standard length of the fish scale with the bearing encoder, and number each fish scale according to the encoder distance data; in this embodiment, the fish scales are numbered as follows: the first fish scale is numbered 1, and the last fish scale is numbered n.

[0022] Step 2: The laser distance measuring sensor detects the interval distance data between the fish scale and the initial horizontal line of the sensor, and calculates the mean, maximum and minimum values ​​of a single fish scale according to the interval distance data; Step 3: After the conveyor belt rotates one circle, the lifting cylinder drives the laser sensor to move, detects the interval distance between the remaining horizontal lines of the fish scale and the sensor, and calculates the mean, maximum and minimum values ​​of a single fish scale according to the interval distance data;

[0023] Step 4: Count the mean data of three connected fish scales; Step 5: Substitute the single mean, maximum, minimum and connected mean data of fish scales into the judgment logic to determine whether the fish scale is damaged individually or continuously, and output the number of the damaged fish scale; Step 6: Drive the marking nozzle to mark the damaged fish scale.

[0024] Furthermore, the judgment logic of step five is: setting an inward tilt threshold, an outward tilt threshold, and a continuous piece mean interval; if the difference between the mean of a single fish scale and the minimum value of a single fish scale is less than the inward tilt threshold, the single fish scale is judged to be inward tilted; if the difference between the maximum value of a single fish scale and the mean of a single fish scale is greater than the outward tilt threshold, the single fish scale is judged to be outward tilted; if the continuous piece mean data of the fish scale does not fall into the continuous piece mean interval, it is judged that the fish scale is continuously damaged.

[0025] Furthermore, in the step three, after the conveyor belt rotates one circle, it is determined whether the distance between the laser ranging sensor and the fish scale with the magnetic mark is in a normal initial range. If the distance does not fall into the normal range, the laser ranging sensor is calibrated.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the invention rather than to limit the present invention. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the protection scope of the present invention.

Claims

1. A fish scale detection and alarm method for a slice baking machine, characterized in that: A fish scale detection and alarm device for a slice roasting machine is used to detect and alarm fish scales. The fish scale detection and alarm device for a slice roasting machine includes a laser distance sensor, a lifting cylinder, a bearing encoder, a marking liquid storage tank, a marking nozzle, a PLC controller, and a display screen. The laser distance sensor is arranged in a conveyor mesh frame through a lifting cylinder, and the lifting cylinder drives the laser distance sensor to move up and down. The detection surface of the laser distance sensor faces the fish scale plate of the conveyor mesh. The bearing encoder is arranged on the conveyor mesh motor bearing. The marking liquid storage tank is connected to the marking nozzle, and the marking nozzle faces the fish scale of the conveyor mesh. The PLC controller is connected to the laser distance sensor, the lifting motor, the bearing encoder, the marking nozzle, and the display screen. The method includes the following steps: Step 1: Set the length of the fish scales, associate the standard length of the fish scales with the bearing encoder, and number each fish scale according to the encoder distance data; Step 2: The laser distance sensor detects the distance data between the fish scale and the initial horizontal line of the sensor, and calculates the mean, maximum and minimum values ​​of the single fish scale according to the distance data; Step 3: After the conveyor belt rotates one circle, the lifting cylinder drives the laser sensor to move, detects the distance between the remaining horizontal lines of the fish scales and the sensor, and calculates the mean, maximum, and minimum values ​​of a single fish scale based on the distance data; Among them, in the step three, after the conveyor belt rotates one circle, it is determined whether the distance between the laser distance measuring sensor and the fish scale provided with the magnetic induction mark is in a normal initial interval, and if the distance does not fall into the normal interval, the laser distance measuring sensor is calibrated; Step 4, counting the mean data of three connected fish scales; Step 5: According to the single-piece mean, maximum, minimum, and continuous piece mean data of the fish scale, the judgment logic is substituted to judge whether the fish scale is damaged individually or continuously, and the damaged fish scale number is output; The judgment logic of step five is as follows: set an inward-inclined threshold, an outward-inclined threshold, and a continuous piece mean interval; if the difference between the single-piece mean value and the single-piece minimum value of the fish scale is less than the inward-inclined threshold, it is judged that the single-piece fish scale is inward-inclined; if the difference between the single-piece maximum value and the single-piece mean value of the fish scale is greater than the outward-inclined threshold, it is judged that the single-piece fish scale is outward-inclined; if the continuous piece mean data of the fish scale does not fall into the continuous piece mean interval, it is judged that the fish scale is continuously damaged; Step six, drive the marking nozzle to mark the damaged fish scales.

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