CN111157337A - Method for dynamically detecting resilience of compression forming block of multi-stage rolling straw forming machine - Google Patents
Method for dynamically detecting resilience of compression forming block of multi-stage rolling straw forming machine Download PDFInfo
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- CN111157337A CN111157337A CN202010006148.1A CN202010006148A CN111157337A CN 111157337 A CN111157337 A CN 111157337A CN 202010006148 A CN202010006148 A CN 202010006148A CN 111157337 A CN111157337 A CN 111157337A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
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- G01N2203/0075—Strain-stress relations or elastic constants
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0085—Compressibility
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
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Abstract
The invention relates to a method for dynamically detecting resilience of a compression molding block of a multistage rolling straw forming machine, which comprises a detection platform, a support, a lower computer, an upper computer, a distance measurement sensor, a straw compression molding block, a sliding block, a lead screw and a motor, wherein the distance measurement sensor is used for detecting resilience of the compression molding block of the multistage rolling straw forming machine, so that the problems of large workload, low precision and the like in manual measurement are solved; the real-time dynamic resilience detection is realized, the whole dynamic resilience process of the compression molding block can be reflected, and data support is provided for exploring the whole dynamic resilience process of the compression molding block of the multi-stage rolling straw forming machine; the method has the advantages that non-contact measurement is realized, the normal working process of the multi-stage rolling straw forming machine is not interfered, the natural resilience process of the straw compression forming block is not damaged, the obtained data precision is high, meanwhile, the corresponding parameters of the multi-stage rolling straw forming machine can be guided, improved and optimized through the detected resilience data, and the method has important significance for the development of the straw compression forming field and the straw compression forming performance detection field.
Description
Technical Field
The invention relates to a method for dynamically detecting resilience of a compression forming block of a multistage rolling straw forming machine, belongs to the field of straw compression forming performance detection, and particularly relates to a method for dynamically detecting resilience of a compression forming block of a multistage rolling straw forming machine for crop straw materials.
Background
According to the invention, the multi-stage rolled straw forming machine (CN201510173725.5) realizes high-density, high-efficiency and continuous compression forming of straws without binding ropes. Compared with the prior hot-press forming technology, the hot-press forming technology reduces a plurality of energy consumption procedures such as drying, heating and cooling during forming, realizes on-site timely compression, and eliminates the transportation and storage cost in large-scale application of natural biomass materials. The multi-stage rolling straw forming machine does not need any additive or binder in the straw compression forming process, has obvious cost-saving and efficiency-increasing characteristics compared with the prior art, and has popularization and application values.
During the working process of the multi-stage rolling straw forming machine, a certain amount of resilience can be generated in the compressed forming block, the resilience is usually physical resilience, and refers to physical deformation of the crushed straw under the action of force, and the reduction or near-reduction state physical change is generated when the pressure is released. An important factor for evaluating the stability of the compression molding block of the multi-stage rolling straw molding machine is the rebound phenomenon after compression, the smaller the rebound proportion is, the higher the stability of the compression molding block is, the better the performance of the multi-stage rolling straw molding machine is, and meanwhile, the detected rebound data can guide the improvement and optimization of corresponding parameters of the multi-stage rolling straw molding machine.
At present, a manual measurement method is mainly adopted for springback detection of a compression forming block of a multi-stage rolling straw forming machine. The manual measuring tool adopts a graduated scale or a vernier caliper, the problems of large workload, low precision and the like exist in measurement, meanwhile, the vernier caliper is in contact measurement, the contact stress of the soft compression molding block can deform, the measured value cannot reflect the real situation, in addition, the manual measuring method cannot realize real-time detection to reflect the whole dynamic rebound process of the compression molding block, and the manual measuring method is not suitable for the detection of the rebound of the compression molding block of the multi-stage rolling straw forming machine. Therefore, a non-contact dynamic rebound detection method suitable for the compression forming blocks of the multi-stage rolling straw forming machine is urgently needed to be explored, and dynamic and real-time detection of the rebound amount of the compression forming blocks on a production line of the multi-stage rolling straw forming machine is realized.
Disclosure of Invention
The invention aims to provide a dynamic detection method for resilience of a compression forming block of a multi-stage rolling straw forming machine, which realizes dynamic and real-time detection of the resilience of the compression forming block on a production line of the multi-stage rolling straw forming machine.
The technical scheme adopted for achieving the purpose of the invention is as follows:
the method for dynamically detecting the resilience of the compression forming block of the multi-stage rolling straw forming machine comprises the following steps: testing platform 1, support 2, next machine 3, host computer 4, range sensor 5, straw compression moulding piece 6, slider 7, lead screw 8, motor 9, wherein: the device comprises a detection platform 1, a support 2, a lower computer 3, an upper computer 4, a distance measuring sensor 5, a sliding block 7, a lead screw 8 and a motor 9, wherein the detection platform 1 is fixedly arranged at a final-stage discharge port of a production line of a multi-stage rolled straw forming machine, the support 2 is fixedly arranged above the final-stage discharge port of the production line of the multi-stage rolled straw forming machine, the distance measuring sensor 5 is fixedly arranged on the sliding block 7, the sliding block 7 is spirally connected with the lead screw 8, the tail end of the lead screw 8 is connected with an output shaft of the motor 9, the motor 9 is fixedly arranged on the support 2, the rotation axis of the lead screw 8 is kept parallel to the moving speed direction of the straw compression forming block 6, the distance measuring sensor 5 is connected with the lower computer 3 through a signal;
wherein: the straw compression molding block 6 is rolled and molded by a production line of a multi-stage rolling straw molding machine and then enters the surface of the detection platform 1 from a final-stage discharge port, a motor 9 drives a screw 8 to rotate and a screw pair generates movement of a sliding block 7, a distance measuring sensor 5 and the straw compression molding block 6 move in the same direction at the same speed, and the movement speed v of the straw compression molding block 6 is0The distance measuring sensor 5 moves at a speed v, i.e., v ═ v0The distance measuring sensor 5 and the straw compression molding block 6 are kept static relatively, and the distance measuring sensor 5 detects the resilience amount of the same position on the straw compression molding block 6 in real time.
In the working process, the straws compressed by the multi-stage rolling straw forming machine are compressed into the strawThe forming block 6 rebounds on the detection platform 1 in a one-way natural mode, the lower computer 3 controls the distance measuring sensor 5 and detects the distance from the distance measuring sensor 5 to the upper surface of the straw compression forming block 6 in real time, and the distance data detected at the ith moment is recorded as hiWhen the detection data are transmitted to the upper computer 4 in real time and the upper computer 4 finishes the collection, processing and analysis of the data, the rebound quantity in the unit time at the ith moment is recorded as △ hi，△hi＝hi-hiAnd (1) completing non-contact real-time dynamic detection of the resilience of the straw compression molding block 6.
The lower computer 3 is a computer which directly controls the distance measuring sensor 5 and can be a PLC or a single chip microcomputer.
The upper computer 4 is a computer, here a PC, which can directly issue control commands and data processing.
The distance measuring sensor 5 can select an ultrasonic distance measuring sensor, an infrared distance measuring sensor or a laser distance measuring sensor according to the actual operation condition.
In the method for dynamically detecting the resilience of the compression forming block of the multistage rolling straw forming machine, the method comprises the following steps: remove slider 7, lead screw 8 and motor 9, equidistantly on the same height of support 2 along the moving speed direction of straw compression shaping piece n range sensor 5 of installation, n is greater than or equal to 2, range sensor 5 installation interval is e, wherein: the dynamic detection device for the rebound process of the compression molding block of the multi-stage rolling straw forming machine is composed of a detection platform 1, a support 2, a lower computer 3, an upper computer 4 and n distance measuring sensors 5, and dynamic detection of the rebound of the compression molding block of the multi-stage rolling straw forming machine is also realized;
in the working process, the straw compression forming block 6 compressed by the multi-stage rolling straw forming machine naturally rebounds on the detection platform 1 in one direction, and the lower computer 3 controls each distance measuring sensor 5 to detect the distance h from each distance measuring sensor 5 to the upper surface of the straw compression forming block 6 in real timejJ 1, 2, n, the sampling frequency f depends on the installation spacing e of the distance measuring sensors 5 and the moving speed v of the straw compression molding block 60，f＝v0E, transmitting the detection data to the upper computer 4 in real time, and finishing the collection, processing and analysis of the data by the upper computer 4, so that the rebound in the unit time at the kth momentThe quantity is recorded as △ hkWhere k is j × e/v0Rebound amount △ hk＝hj+1-hjAnd the non-contact real-time dynamic detection of the resilience of the straw compression molding block 6 is completed, and the method is applied to the dynamic detection of the whole resilience process of the straw compression molding block.
The invention has the beneficial effects that: 1. the method for detecting the resilience of the compression forming block of the multistage rolling straw forming machine by adopting the distance measuring sensor is provided, and the problems of large workload, low precision and the like in manual measurement are solved; 2. the real-time dynamic resilience detection of the compression forming block of the multi-stage rolling straw forming machine is realized, the whole dynamic resilience process of the compression forming block can be reflected, and data support is provided for exploring the whole dynamic resilience process of the compression forming block of the multi-stage rolling straw forming machine; 3. the method has the advantages that non-contact measurement is realized, the normal working process of the multi-stage rolling straw forming machine is not interfered, the natural resilience process of the straw compression forming block is not damaged, the obtained data precision is high, meanwhile, the corresponding parameters of the multi-stage rolling straw forming machine can be guided, improved and optimized through the detected resilience data, and the method has important significance for the development of the straw compression forming field and the straw compression forming performance detection field.
Drawings
FIG. 1 is a schematic diagram of a straw compression molding block rebound dynamic detection device;
FIG. 2 is a schematic diagram of the dynamic detection device for the rebound process of the straw compression molding block;
FIG. 3 is a schematic diagram of the detection of the rebound dynamic detection device of the straw compression molding block;
FIG. 4 is a detection schematic diagram of a dynamic detection device for the rebound process of the straw compression molding block;
FIG. 5 is a diagram of an upper computer recording resilience data of an output straw compression molding block in real time;
FIG. 6 is a working schematic diagram of a straw compression molding block rebound dynamic detection device;
in the figure, 1: a detection platform; 2: a support; 3: a lower computer; 4: an upper computer; 5: a ranging sensor; 6: compressing the straws into blocks; 7: a slider; 8: a lead screw; 9: an electric motor.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.
The straw compression molding block resilience dynamic detection device shown in figure 1 is formed by the following schematic diagram: the method for dynamically detecting the resilience of the compression forming block of the multi-stage rolling straw forming machine comprises the following steps: testing platform 1, support 2, next machine 3, host computer 4, range sensor 5, straw compression moulding piece 6, slider 7, lead screw 8, motor 9, wherein: the device comprises a detection platform 1, a support 2, a lower computer 3, an upper computer 4, a distance measuring sensor 5, a sliding block 7, a lead screw 8 and a motor 9, wherein the detection platform 1 is fixedly arranged at a final-stage discharge port of a production line of a multi-stage rolled straw forming machine, the support 2 is fixedly arranged above the final-stage discharge port of the production line of the multi-stage rolled straw forming machine, the distance measuring sensor 5 is fixedly arranged on the sliding block 7, the sliding block 7 is spirally connected with the lead screw 8, the tail end of the lead screw 8 is connected with an output shaft of the motor 9, the motor 9 is fixedly arranged on the support 2, the rotation axis of the lead screw 8 is kept parallel to the moving speed direction of the straw compression forming block 6, the distance measuring sensor 5 is connected with the lower computer 3 through a signal line to complete signal;
wherein: the straw compression molding block 6 is rolled and molded by a production line of a multi-stage rolling straw molding machine and then enters the surface of the detection platform 1 from a final-stage discharge port, a motor 9 drives a screw 8 to rotate and a screw pair generates movement of a sliding block 7, a distance measuring sensor 5 and the straw compression molding block 6 move in the same direction at the same speed, and the movement speed v of the straw compression molding block 6 is0The distance measuring sensor 5 moves at a speed v, i.e., v ═ v0(as shown in fig. 6), the distance measuring sensor 5 and the straw compression molding block 6 are kept relatively static, and the distance measuring sensor 5 detects the resilience amount of the same position on the straw compression molding block 6 in real time.
The detection schematic diagram of the straw compression molding block rebound dynamic detection device shown in fig. 3 is as follows: in the working process, the straw compression forming block 6 compressed by the multi-stage rolling straw forming machine naturally rebounds on the detection platform 1 in one direction, and the lower computer 3 controls the distance measuring sensor 5, detects the distance measuring sensor 5 in real time to reach the upper surface of the straw compression forming block 6The distance between the two points, the sampling frequency f is set according to the requirement, f is less than or equal to 1Hz, the distance data detected at the ith moment is recorded as hiWhen the detection data are transmitted to the upper computer 4 in real time and the upper computer 4 finishes the collection, processing and analysis of the data, the rebound quantity in the unit time at the ith moment is recorded as △ hi，△hi＝hi-hiAnd (4) 1, wherein i is more than or equal to 1s, and finally, non-contact real-time dynamic detection of the resilience of the straw compression molding block 6 is completed.
Wherein: the lower computer 3 is a computer which directly controls the distance measuring sensor 5 and can be a PLC or a single chip microcomputer; the upper computer 4 is a computer, here a PC, which can directly issue control commands and data processing.
The distance measuring sensor 5 can select an ultrasonic distance measuring sensor, an infrared distance measuring sensor or a laser distance measuring sensor according to actual operation working conditions, wherein the ultrasonic distance measuring sensor is easily influenced by environmental factors such as temperature and humidity, the range and the precision are lower, the method is applied to short-distance detection working conditions with low precision requirements, the infrared distance measuring sensor is easily influenced by illumination factors, the range and the precision are moderate, the method is used for the short-distance detection working conditions with general precision requirements, the laser distance measuring sensor has a large range and high precision, the anti-interference capability is strong, and the method is used for the working conditions with long detection distance and high precision requirements.
In the method for dynamically detecting the resilience of the compression forming block of the multi-stage rolling straw forming machine: remove slider 7, lead screw 8 and motor 9, equidistantly on the same height of support 2 along the moving speed direction of straw compression shaping piece n range sensor 5 of installation, n is greater than or equal to 2, range sensor 5 installation interval is e, wherein: the dynamic detection device for the rebound process of the compression molding block of the multi-stage rolling straw forming machine is composed of a detection platform 1, a support 2, a lower computer 3, an upper computer 4 and n distance measuring sensors 5 (as shown in figure 2), and the rebound dynamic detection of the compression molding block of the multi-stage rolling straw forming machine is also realized;
FIG. 4 shows a detection schematic diagram of the dynamic detection device for the rebound process of the straw compression molding block: in the working process, the straw compression forming block 6 compressed by the multi-stage rolling straw forming machine naturally rebounds on the detection platform 1 in one direction, and the lower computer 3 controls each distance measuring sensor 5 to detect each distance in real timeThe distance hj, j between the sensor 5 and the upper surface of the straw compression molding block 6 is 1, 2, and n, and the sampling frequency f depends on the installation distance e of the distance measuring sensor 5 and the moving speed v of the straw compression molding block 60，f＝v0And e, transmitting the detection data to the upper computer 4 in real time, and recording the rebound quantity in unit time at the kth moment as △ h when the upper computer 4 finishes data collection, processing and analysiskWhere k is j × e/v0Rebound amount △ hk＝hj+1-hjFinally, the non-contact real-time dynamic detection of the rebounding of the straw compression molding block 6 is completed, and the method is applied to the dynamic detection of the whole rebounding process of the straw compression molding block.
The number n of the distance measuring sensors 5 can be increased or decreased according to actual needs, when the installation distance e is fixed, if the straw compression molding block 6 rebounded in the whole process needs to be detected, the number n of the distance measuring sensors 5 needs to be increased, and the size of the installation distance e of the distance measuring sensors 5 depends on the moving speed v of the straw compression molding block 60The method is applied to the whole rebound process of the straw compression molding block 6, the total rebound amount with a long rebound period is measured, and when the installation distance e is fixed, the number n of the distance measuring sensors 5 is changed to adapt to the whole rebound process of the straw compression molding block 6.
As shown in fig. 5, it is a graph for the upper computer to record and output the resilience data of the straw compression molding block in real time: in the actual test process, the sampling frequency f is 0.1Hz, the distance measuring sensor 5 detects the thickness of the straw compression molding block 6 in real time and uploads the data to the upper computer 4 in real time, and part of the data are as follows: the upper computer 4 completes recording analysis processing of data at 0s, 80.00mm, 10s, 81.87mm, 20s, 83.57mm, 30s, 84.70mm, 40s and 85.50mm … …, thickness data of the straw compression molding block 6 are output in real time, the thickness difference value of the straw compression molding block 6 in a fixed time interval is the resilience amount of the straw compression molding block 6 in the time interval, detected data can show that the straw compression molding block 6 in the test is located within 90s after compression in the rapid resilience stage after the straw compression molding machine production line is subjected to roll molding, and the straw compression molding block 6 is stable and does not rebound after 150 s.
The method for detecting the resilience of the compression forming block of the multistage rolling straw forming machine by adopting the distance measuring sensor is provided, and the problems of large workload, low precision and the like in manual measurement are solved; the real-time dynamic resilience detection of the compression forming block of the multi-stage rolling straw forming machine is realized, the whole dynamic resilience process of the compression forming block can be reflected, and data support is provided for exploring the whole dynamic resilience process of the compression forming block of the multi-stage rolling straw forming machine; the method also realizes non-contact measurement, does not interfere the normal working process of the multi-stage rolling straw forming machine, does not destroy the natural rebound process of the straw compression forming block, has high data precision, can guide to improve and optimize the corresponding parameters of the multi-stage rolling straw forming machine through the detected rebound data, and has important significance for the development of the straw compression forming field and the straw compression forming performance detection field.
Claims (3)
1. The method for dynamically detecting the resilience of the compression forming block of the multi-stage rolling straw forming machine is characterized by comprising the following steps of: the device comprises a detection platform, a support, a lower computer, an upper computer, a distance measuring sensor, a straw compression molding block, a slide block, a lead screw and a motor, wherein the detection platform is fixedly arranged at a final-stage discharge port of a production line of the multi-stage rolled straw molding machine;
wherein: the straw compression molding block is rolled and molded by a production line of a multi-stage rolling straw molding machine and then enters the surface of the detection platform from a final-stage discharge port, a motor drives a screw rod to rotate and generate the movement of a sliding block by a screw pair, a distance measuring sensor and the straw compression molding block keep the same speed and the same direction to move, the distance measuring sensor and the straw compression molding block keep relatively static, and the distance measuring sensor detects the rebound quantity of the same position on the straw compression molding block in real time;
working processIn the method, the straw compression forming block compressed by the multi-stage rolling straw forming machine naturally rebounds on the detection platform in one direction, the lower computer controls the distance sensor and detects the distance between the distance sensor and the upper surface of the straw compression forming block in real time, and the data of the distance detected at the ith moment is recorded as hiAnd transmitting the detection data to an upper computer in real time, and recording the rebound quantity in unit time at the ith moment as △ h when the upper computer finishes the collection, processing and analysis of the datai，△hi＝hi-hiAnd-1, completing non-contact real-time dynamic detection of the resilience of the straw compression molding block.
2. The method for dynamically detecting the rebound of the compression molding block of the multi-stage rolling straw molding machine according to claim 1, wherein the distance measuring sensor can be an ultrasonic distance measuring sensor, an infrared distance measuring sensor or a laser distance measuring sensor according to actual operation conditions.
3. The method for dynamically detecting the rebounding of the compression-molded block of the multi-stage rolling straw molding machine according to claim 1 is characterized in that a sliding block, a lead screw and a motor are removed, n distance measuring sensors are installed at the same height of a support at equal intervals along the moving speed direction of the straw compression-molded block, n is more than or equal to 2, the installation interval of the distance measuring sensors is e, and the dynamic detection of the rebounding of the compression-molded block of the multi-stage rolling straw molding machine is also realized;
in the working process, the straw compression forming block compressed by the multi-stage rolling straw forming machine naturally rebounds on the detection platform in a one-way mode, the lower computer controls each distance measuring sensor to detect the distances hj, j-1, 2, v-n between each distance measuring sensor and the upper surface of the straw compression forming block in real time, and the sampling frequency f-v0And e, transmitting the detection data to the upper computer in real time, and finishing the collection, processing and analysis of the data by the upper computer, wherein the rebound quantity in the unit time at the kth moment is recorded as △ hkWhere k is j × e/v0Rebound amount △ hk＝hj+1-hjAnd the non-contact real-time dynamic detection of the resilience of the straw compression molding block is completed.
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| CN112715172A (en) * | 2020-12-14 | 2021-04-30 | 吉林大学 | Automatic-removable wall-surface-type straw compression mold for measuring resilience after straw pressing |
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