A calibration device for electronic belt scales of a cigarette primary processing line

Abstract

The application provides a calibration device for an electronic belt scale of a cigarette primary processing line, comprising a support frame, a transmission device, a grabbing device, a weight and a weight disc. The support frame is arranged horizontally above the electronic belt scale of the primary processing line, one side of the support frame is provided with the transmission device, and the other side of the support frame is provided with a plurality of weight discs, and the weight disc is provided with the weight. The transmission device is in transmission connection with the grabbing device, and is used for driving the grabbing device to move above the weight for grabbing when the electronic belt scale is calibrated, placing the weight on the electronic belt scale for online calibration, and then grabbing and placing the weight back on the corresponding weight disc after the calibration is completed. The application can improve the convenience and intelligent level of the calibration of the electronic belt scale.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic belt scale calibration, and particularly relates to a calibration device for an electronic belt scale of a cigarette cut-tobacco line. BACKGROUND

[0002] With the continuous improvement of the automation level and informatization level of cigarette production, the requirement for quality control in the production process is also higher and higher. The electronic belt scale is a device for measuring the cumulative weight of the material of the cut-tobacco line in the cut-tobacco workshop, and is mainly equipped in the material quality control link of cigarette production. However, the calibration method of the existing electronic belt scale mainly includes three types of material (physical object) calibration, chain code calibration and hanging code calibration. The material calibration method is closest to the actual production state and has the highest calibration accuracy, but the calibration procedure wastes a large amount of material, and a long time is required for one-time qualified calibration. The accuracy of the chain code calibration is slightly lower than that of the material calibration, and the principle is to use a standard chain code instead of the material, which saves the weighing step compared with the material calibration, but the chain code itself also has a large mass and volume, and also consumes a large amount of manpower and material resources. The hanging code calibration method is relatively simple and has a high degree of automation, but the loading process is greatly different from the actual production state, and the reliability of the calibration result is not high, and a contrast experiment with the material calibration method is generally required when the hanging code calibration method is applied. It can be seen that the existing calibration procedure and requirements cannot guarantee the reliability and accuracy of the measurement data of the electronic belt scale, and therefore, it is of great significance to provide an online calibration device specially suitable for the production characteristics of the tobacco industry. SUMMARY

[0003] The present application provides a calibration device for an electronic belt scale of a cigarette cut-tobacco line, which solves the problems of inconvenient and inaccurate calibration of the existing electronic belt scale, and can improve the convenience and intelligent level of the calibration of the electronic belt scale.

[0004] To achieve the above object, the present application provides the following technical scheme:

[0005] A calibration device for an electronic belt scale of a cigarette cut-tobacco line, comprising: a support frame, a transmission device, a grabbing device, a weight and a weight disc;

[0006] The support frame is arranged horizontally above the electronic belt scale of the cut-tobacco line, one side of the support frame is provided with the transmission device, and the other side of the support frame is provided with a plurality of weight discs, and the weight discs are provided with the weights;

[0007] The transmission device is in transmission connection with the grabbing device, and is used for driving the grabbing device to move above the weight for grabbing when the electronic belt scale is calibrated, and placing the weight on the electronic belt scale for online calibration, and then grabbing and placing the weight back on the corresponding weight disc after the calibration is completed.

[0008] Preferably, the host computer is further included;

[0009] The host computer is respectively connected with the electronic belt scale, the transmission device and the grabbing device, and a man-machine interactive operation interface is arranged on the host computer, so as to control the transmission device and the grabbing device to operate, and to collect and process data, and upload and display online calibration results.

[0010] Preferably, the transmission device comprises a base, a three-axis mechanical arm and a cylinder;

[0011] The base is arranged on the support frame table, the three-axis mechanical arm is arranged on the base, and the grabbing device is arranged on the three-axis mechanical arm;

[0012] The cylinder is in transmission connection with the three-axis mechanical arm, and is used to drive the three-axis mechanical arm to drive according to a set path.

[0013] Preferably, the three-axis mechanical arm comprises a lifting shaft, a first rotating shaft and a second rotating shaft;

[0014] The second rotating shaft is in transmission connection with the lifting shaft and the first rotating shaft through a connecting piece, and the cylinder is in transmission connection with the lifting shaft, the first rotating shaft and the second rotating shaft;

[0015] The first rotating shaft is arranged on the base and rotates around the base, and the lifting shaft and the second rotating shaft are both arranged in parallel with the first rotating shaft;

[0016] The lifting shaft provides a moving stroke in the vertical direction for the mechanical arm;

[0017] The first rotating shaft and the second rotating shaft provide a rotating stroke in the horizontal direction for the mechanical arm.

[0018] Preferably, a gas pressure expansion structure is arranged on the base, and the base is supplied with gas through a gas pipe, so as to extend the moving stroke of the mechanical arm in the vertical direction.

[0019] Preferably, the grabbing device comprises a connecting plate, an electromagnet, a connector, a damping spring and a limiting rod;

[0020] One end of the connector is detachably connected to the connecting piece of the three-axis mechanical arm, the other end of the connector is slidably connected to the connecting plate, and the connector and the connecting plate are provided with the damping spring therebetween;

[0021] The bottom surface of the connecting plate is provided with the electromagnet, and a plurality of limiting rods are arranged around the electromagnet;

[0022] The electromagnet completes the adsorption and placement of the weight by switching on and off electricity, and the limiting rod guides and limits when the weight is adsorbed.

[0023] Preferably, the grabbing device further comprises a first photoelectric probe, a second photoelectric probe and a contact switch.

[0024] 0The first photoelectric probe, the second photoelectric probe and the contact switch are arranged on the connecting plate.

[0025] The first photoelectric probe and the second photoelectric probe are used to detect whether the weight is in the adsorption area below the electromagnet.

[0026] The contact switch is used to detect whether the electromagnet is successfully adsorbed to the weight.

[0027] 5Preferably, further comprising: an air compressor;

[0028] The air compressor is arranged on the support frame table and is used to provide compressed air for the air cylinder and the air pipe.

[0029] Preferably, the upper computer is respectively connected with the air compressor, the air cylinder, the electromagnet, the first photoelectric probe, the second photoelectric probe and the contact switch in signal connection; after receiving a calibration instruction, the upper computer controls the air compressor to operate to supply air to the air cylinder, and drives the three-axis mechanical arm to grab the corresponding weight according to the preset weight specification and the number of cycles and place the weight on the electronic belt scale for calibration and verification.

[0030] The upper computer compares the measurement value of the electronic belt scale with the calculation value calculated from the weight and the number of cycles to obtain a verification result and a calibration coefficient.

[0031] 5Preferably, the top of the weight disc adopts a slope angle disc structure, and the bottom of the weight disc is provided with bolt fixing holes.

[0032] The present application provides a calibration device for an electronic belt scale of a cigarette primary processing line, which comprises a support frame table arranged above an electronic belt scale of a primary processing line, a transmission device and a weight arranged on the support frame table, and a grabbing device arranged on the transmission device to realize online calibration and verification of the electronic belt scale. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows.

[0034] Figure 1It is a calibration device schematic diagram of an electronic belt scale for a cigarette silk making line provided by the present application.

[0035] Figure 2 It is a schematic diagram of a transmission device provided by the present application.

[0036] Figure 3 It is a schematic diagram of a grabbing device provided by the present application.

[0037] Figure 4 It is a schematic diagram of a weight disc provided by the present application.

[0038] Figure 5 It is a calibration device calibration verification process schematic diagram provided by the present application. DETAILED DESCRIPTION

[0039] In order to enable personnel in the technical field to better understand the scheme of the embodiments of the present application, the embodiments of the present application are further described in detail below in combination with the drawings and embodiments.

[0040] In view of the inconvenient and inaccurate problems existing in the current electronic belt scale calibration, the present application provides a calibration device for an electronic belt scale of a cigarette silk making line, which solves the inconvenient and inaccurate problems existing in the current electronic belt scale calibration, and can improve the convenience and intelligent level of the electronic belt scale calibration.

[0041] As shown in Figures 1 to 3 A calibration device for an electronic belt scale of a cigarette silk making line, comprising: a support frame table 6, a transmission device 1, a grabbing device 3, a weight and a weight disc 2. The support frame table 6 is transversely arranged above the electronic belt scale of the silk making line, one side of the support frame table 6 is provided with the transmission device 1, and the other side of the support frame table 6 is provided with a plurality of weight discs 2, and the weight disc 2 is provided with the weight. The transmission device 1 is in transmission connection with the grabbing device 3, and is used for driving the grabbing device to move above the weight for grabbing when calibrating the electronic belt scale, and placing the weight on the electronic belt scale for online calibration, and then grabbing and placing the weight back on the corresponding weight disc after the calibration is completed.

[0042] Further, the device further comprises: an upper computer 7; the upper computer 7 is in signal connection with the electronic belt scale, the transmission device 1 and the grabbing device 3 respectively, and a man-machine interactive operation interface is arranged on the upper computer 7, so as to control the transmission device and the grabbing device to operate, and to perform data acquisition and processing, and upload and display the online calibration result.

[0043] In actual application, the upper computer has a data uploading function, and the complete verification data of all electronic belt scales in the same verification environment will be uploaded to the server, which meets the requirements of intelligentization and informatization under the new development stage of industry.

[0044] As shown in Figure 2 The transmission device comprises a base 1-6, a three-axis mechanical arm and a cylinder 1-2. The base 1-6 is on the support frame 6, the three-axis mechanical arm is arranged on the base 1-6, and the three-axis mechanical arm is provided with the grabbing device 3. The cylinder 1-2 is in transmission connection with the three-axis mechanical arm, and is used for driving the three-axis mechanical arm to drive according to a set path.

[0045] Further, the three-axis mechanical arm comprises a lifting shaft 1-1, a first rotating shaft 1-5 and a second rotating shaft 1-3. The second rotating shaft 1-3 is in transmission connection with the lifting shaft 1-1 and the first rotating shaft 1-5 through connecting pieces respectively, and the cylinder is in transmission connection with the lifting shaft, the first rotating shaft and the second rotating shaft respectively. The first rotating shaft 1-5 is arranged on the base 1-6 and rotates around the base, and the lifting shaft and the second rotating shaft are both arranged in parallel with the first rotating shaft. The lifting shaft provides a moving stroke in the vertical direction for the mechanical arm. The first rotating shaft and the second rotating shaft provide a rotating stroke in the horizontal direction for the mechanical arm.

[0046] Further, the base 1-6 is provided with a pneumatic extension structure, and the base is supplied with gas through an air pipe 1-4 to extend the moving stroke of the mechanical arm in the vertical direction.

[0047] As shown in Figure 3 The grabbing device 3 comprises a connecting plate 3-2, an electromagnet 3-3, a connector 3-4, a damping spring 3-5 and a limiting rod 3-8. One end of the connector 3-4 is detachably connected to the connecting piece of the three-axis mechanical arm, the other end of the connector 3-4 is slidably connected to the connecting plate 3-2, and the connector 3-4 is provided with the damping spring 3-5 between the connector 3-4 and the connecting plate 3-2. The bottom surface of the connecting plate 3-2 is provided with the electromagnet 3-3, and a plurality of limiting rods 3-8 are arranged around the electromagnet 3-3. The electromagnet 3-3 completes the adsorption and placement of the weight by turning on and off, and the limiting rods 3-8 guide and limit when the weight is adsorbed.

[0048] Further, the grabbing device 3 further comprises a first photoelectric probe 3-1, a second photoelectric probe 3-6 and a contact switch 3-7. The first photoelectric probe 3-1, the second photoelectric probe 3-6 and the contact switch 3-7 are all arranged on the connecting plate 3-2. The first photoelectric probe and the second photoelectric probe are used to detect whether the weight is in the adsorption area below the electromagnet. The contact switch is used to detect whether the electromagnet is successfully adsorbed to the weight.

[0049] In practical applications, the first photoelectric probe and the second photoelectric probe are used to detect whether the standard weight reaches the adsorption area below the electromagnet. The connecting plate is used to integrate and connect other components in the grabbing module. The electromagnet realizes the adsorption and placement functions of the standard weight by switching on and off. The connector fixes the grabbing device to the end of the lifting shaft, so that the grabbing device can move with the transmission device. The shock-absorbing spring acts as a transitional connecting piece between the connector and the connecting plate. When the electromagnet adsorbs the standard weight, the spring absorbs part of the impact force generated by the impact, reducing the impact on the parts. The contact switch is installed on the connecting plate to detect whether the electromagnet successfully adsorbs the standard weight. The limiting rod is installed on the rear side of the connecting plate, and there are two left and right limiting rods. When the electromagnet fails to adsorb, it plays a guiding and intercepting role to prevent the weight from being lost.

[0050] As shown in Figure 1 , the device further comprises: an air compressor 5; the air compressor 5 is arranged on the support frame 6, and is used to provide compressed air for the air cylinder and the air pipe.

[0051] Further, the upper computer is respectively connected with the air compressor, the air cylinder, the electromagnet, the first photoelectric probe, the second photoelectric probe and the contact switch. After receiving the calibration instruction, the upper computer controls the air compressor to operate, so as to supply air to the air cylinder, and drives the three-axis mechanical arm to grab the corresponding weight according to the preset weight specification and cycle number, and places the weight on the electronic belt scale for calibration and verification. The upper computer compares the measured value of the electronic belt scale with the calculated value obtained by the weight and the cycle number to obtain the verification result and the calibration coefficient.

[0052] In an embodiment, as shown in Figure 5 , for the verification of the electronic belt scale, the upper computer needs to realize the "peeling" operation according to the measurement parameters of the idling conveying belt. The upper computer sets the weight specification and verification mode selected by the electronic belt scale during the current period (different specifications of the weight match the corresponding electronic belt scale of the work station, and different verification modes determine different cycle grabbing times), and controls the mechanical arm to move the grabbing module to the position where the corresponding weight disc is located, and starts the electromagnet to adsorb the standard weight. After the weight is successfully grabbed, it is moved to the front end of the production line and placed, then the mechanical arm quickly moves to the rear end of the production line to wait for the weight to arrive, and after grabbing the weight, it is moved to the front end of the production line again, and the placing and grabbing actions are repeated until the cycle number is met. The mechanical arm moves the grabbing module to the initial position of the weight disc, and places the weight back, and the mechanical arm is reset to the initial state. In the above process, the weight cycles through the weighing section of the electronic belt scale, the electronic belt scale automatically accumulates the measured flow, and the standard mass of the weight itself is used as the standard flow value. By comparing the measured flow and the standard flow difference, the corresponding verification result and correction coefficient can be obtained, and after being confirmed by the upper computer, it is uploaded to the server cloud in a standard format.

[0053] During the verification, the host computer controls the grabbing module to grab the specified standard weight for verification. Taking a 5kg weight as an example, after the verification command is issued, the robot arm moves to the position of the 5kg weight disc, and the electromagnet is powered on to attract the weight. After the photoelectric probe and the contact switch confirm that the weight has been successfully grabbed, the robot arm moves to the fixed position at the front end of the production line (before the electronic belt scale weighing section), and the height of the weight is as close to the belt as possible to reduce the impact force generated when the weight falls. The electromagnet is powered off to release the weight, and the weight moves with the belt pulley on the production line. The robot arm quickly moves to the fixed position at the rear end of the production line (after the electronic belt scale weighing section) and waits for the weight to arrive. When the photoelectric probe detects the weight, the grabbing module enters the warning state. When both the photoelectric probe 1 and the photoelectric probe 2 detect the weight, it indicates that the weight is under the electromagnet, and the electromagnet is powered on to attract the weight. The robot arm moves to the front end fixed position again and repeats the steps of releasing the grabbed weight. If the weight deviates and the probe cannot detect it, the limiting rod will guide and limit the weight to the position under the electromagnet. When the above steps reach the number of cycles set by the host computer, the robot moves to the initial weight disc position after grabbing the weight at the rear end, and releases the weight, completing the verification. The measured flow during the verification is obtained based on the initial flow value and the final flow value recorded by the electronic belt scale. The standard flow is calculated based on the mass of the standard weight and the number of cycles, and the verification result and the calibration coefficient are obtained by comparison.

[0054] The method for periodical verification of the electronic belt scale in the cigarette primary processing workshop comprises the following steps:

[0055] First, check whether the robot arm and the grabbing module are correctly installed, whether the weights are correctly placed, and whether the gas circuit is normally flowing. Ensure that the connection cables are connected and the power supply line is grounded. Before the formal verification, debug the functions of the entire system to ensure normal operation of the system.

[0056] Then, start the verification. The host computer controls the robot arm to move according to the pre-set motion, grab the specified weight, and then perform cyclic loading on the production line. The electronic belt scale starts to record the equivalent flow through the electronic belt scale weighing section simultaneously. For the periodical verification of the electronic belt scale, the measured flow Zm and the standard flow Za are needed, where the measured flow is given by the electronic belt scale, and the specific size is the difference between the value recorded by the electronic belt scale at the end of the verification Qc and the value recorded by the electronic belt scale at the beginning of the measurement Q0. Wherein, Zm = Qc - Q0.

[0057] The standard flow in the measurement of the device is the equivalent weight of the standard weight passing through the electronic belt scale weighing section during the verification time, which is calculated based on the mass of the standard weight and the number of cycles Za = M x n, where M is the standard mass of the grabbed weight, and n is the number of times the weight is cyclically grabbed and released. According to the values of the measured flow Zm and the standard flow Za, the verification result can be calculated.

[0058] In the embodiment, the common flow variation range of each station of the electronic belt scale is 1400kg / h-3600kg / h, and the accuracy level required for checking is 0.5 level; according to the common flow variation range and the accuracy level requirement, the selected weight mass specifications include 2kg-5kg, the accuracy levels are all M2 level, the selected mechanical arm control accuracy is sufficient, and the checking requirements can be met.

[0059] As shown in Figure 4 The top of the weight disc 2 adopts a slope angle disc structure, and the bottom of the weight disc is provided with bolt fixing holes.

[0060] In actual application, the weight disc is installed on the support frame table through bolts, the diameter of the top disc of the weight disc is slightly larger than that of the standard weight, and the upper part adopts a slope angle design, which can guide the placement of the weight and can be used to correct the positioning cumulative error generated when the mechanical arm repeatedly takes and places the weight.

[0061] It can be seen that the calibration device for the electronic belt scale of the cigarette primary processing line is provided, the support frame table is arranged above the electronic belt scale of the primary processing line, the transmission device and the weight are arranged on the support frame table, the grabbing device is arranged on the transmission device, and the online calibration and checking of the electronic belt scale are realized.

[0062] The above describes the structure, features and effect of the present application according to the embodiment shown in the drawings, and the above is only the preferred embodiment of the present application, but the present application is not limited to the embodiment shown in the drawings, any change or modification made according to the concept of the present application, or the equivalent embodiment with equivalent change, as long as it is within the scope of the present application, should be within the protection scope of the present application.

Claims

1. A calibration device for an electronic belt scale of a cigarette primary processing line, characterized in that, The utility model relates to a kind of electronic belt scale calibration device, including: Host computer, support frame table, transmission device, grabbing device, weight and weight disc; The support frame table is arranged above electronic belt scale of tobacco primary processing line, and the transmission device is arranged on one side of the support frame table, and a plurality of weight discs are arranged on the other side of the support frame table, and the weight is arranged on the weight disc, and the top of the weight disc adopts a slope angle disc structure, and the bottom of the weight disc is provided with bolt fixing hole; The transmission device is drivingly connected with the grabbing device, for driving the grabbing device to move above the weight for grabbing when calibrating the electronic belt scale, and placing the weight on the electronic belt scale for online calibration, and then placing the weight back on the corresponding weight disc after calibration is completed; The host computer is signal-connected with the electronic belt scale, the transmission device and the grabbing device respectively, and a man-machine interactive operation interface is arranged on the host computer for controlling the transmission device and the grabbing device to operate, and for data acquisition and processing, uploading and displaying online calibration results; For the verification of electronic belt scale, first, the belt is idled, and the host computer realizes the "peeling" operation according to the measurement parameters of idling; the host computer sets the weight specification and verification mode selected in the current period of the electronic belt scale, the weights of different specifications are matched with the electronic belt scales of corresponding stations, and different verification modes determine different cycle grabbing times; the host computer controls the transmission device to move the grabbing device to the position of the corresponding weight disc, starts the standard weight grabbing action, moves to the front end of the production line after the weight is successfully grabbed, then quickly moves to the rear end of the production line to wait for the weight to arrive, moves to the front end of the production line again after the weight arrives at the set position, repeats the placing and grabbing action until the cycle times are met; During the verification process, the weight cycles through the weighing section of the electronic belt scale, the electronic belt scale automatically accumulates the measured flow, the standard flow is obtained according to the standard mass of the weight itself and the cycle times, the difference between the measured flow and the standard flow is compared, and the corresponding verification result and correction coefficient are obtained; The transmission device includes a base, a three-axis mechanical arm and a cylinder; The base is arranged on the support frame table, the three-axis mechanical arm is arranged on the base, and the grabbing device is arranged on the three-axis mechanical arm; The cylinder is drivingly connected with the three-axis mechanical arm for driving the three-axis mechanical arm to move along the set path; The three-axis mechanical arm includes a lifting shaft, a first rotating shaft and a second rotating shaft; The second rotating shaft is drivingly connected with the lifting shaft and the first rotating shaft through a connecting piece, and the cylinder is drivingly connected with the lifting shaft, the first rotating shaft and the second rotating shaft; The first rotating shaft is arranged on the base and rotates around the base, and the lifting shaft and the second rotating shaft are arranged in parallel with the first rotating shaft; The lifting shaft provides the mechanical arm with vertical movement stroke; The first rotating shaft and the second rotating shaft provide the mechanical arm with horizontal rotation stroke; The base is provided with an air pressure extending structure, and the base is supplied with air through an air pipe to extend the stroke of the mechanical arm in the vertical direction, The grabbing device comprises a connecting plate, an electromagnet, a connector, a damping spring and a limiting rod; One end of the connector is detachably connected to the connecting piece of the three-axis mechanical arm, and the other end of the connector is slidably connected to the connecting plate, and the connector and the connecting plate are provided with the damping spring therebetween; The bottom surface of the connecting plate is provided with the electromagnet, and a plurality of limiting rods are arranged around the electromagnet; The electromagnet completes the adsorption and placement of the weight by switching on and off, and the limiting rods guide and limit when the weight is adsorbed; The grabbing device further comprises a first photoelectric probe, a second photoelectric probe and a contact switch; The first photoelectric probe, the second photoelectric probe and the contact switch are arranged on the connecting plate; The first photoelectric probe and the second photoelectric probe are used to detect whether the weight is in the adsorption area below the electromagnet; The contact switch is used to detect whether the electromagnet is successfully adsorbed to the weight.

2. The calibration device for an electronic belt scale of a cigarette primary processing line according to claim 1, characterized in that, Further comprising: An air compressor; The air compressor is arranged on the support frame table and is used to provide compressed air for the air cylinder and the air pipe.

3. The calibration device for an electronic belt scale of a cigarette primary processing line according to claim 2, characterized in that, The upper computer is respectively connected with the air compressor, the air cylinder, the electromagnet, the first photoelectric probe, the second photoelectric probe and the contact switch; After receiving the calibration instruction, the upper computer controls the air compressor to operate to supply air to the air cylinder, and drives the three-axis mechanical arm to grab the corresponding weight according to the preset weight specification and cycle number to place the weight on the electronic belt scale for calibration and verification; The upper computer compares the measured value of the electronic belt scale with the calculated value calculated from the weight and the cycle number to obtain the verification result and the calibration coefficient.

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