A teaching system

Abstract

The invention relates to the technical field of teaching tools, and in particular to a teaching system, including teaching tools, which include a calender, a cotton gin, a fan and an electrostatic generator; the calender and the cotton gin both include a frame, a drive motor and a controller; the frame has a feeding side, and the frame includes an upper baffle and a lower baffle; the upper baffle is provided with a first air outlet, and the lower baffle is provided with a second air outlet; the first air outlet and the second air outlet are respectively connected to the fan; a plurality of flexible conductive wires connected to the electrostatic generator are provided on the first air outlet and the second air outlet; it is judged whether the charge amount of the flexible conductive wire fluctuates, and if so, it is determined that it is in contact with a human body and an emergency stop is performed; the invention utilizes the characteristics of beeswax insulation and human body conductivity, combines the flexible conductive wire with the electrostatic generator, and the flexible conductive wires of the upper and lower baffles have different charges and come into contact with the human body to cause a potential change to control the emergency stop of the drive motor, thereby achieving safe teaching demonstration and standardizing the actions of practical operators.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching tools, and in particular to a teaching system. Background Art

[0002] Bee science, or bee science for short, is one of the main courses taught in modern agricultural universities. The nest foundation is the artificial foundation of the honeycomb. In the bee science course, the production of the nest foundation is one of the practical courses. In the existing teaching, the beeswax is melted and made into a wax plate through a mold, and the wax plate is rolled into a thin sheet through a calender, and the thin sheet is fed into a cotton gin to be rolled into a nest foundation of a predetermined shape; however, the calender and cotton gin used in teaching are teaching equipment, and their rollers are directly exposed. During the student training process, since most users are students, they have no operating experience, or the operation is not standardized, it is easy to get their fingers caught between the rollers during rolling, which can cause teaching accidents. Therefore, a teaching system that meets the safety needs of teaching demonstrations and standardized operations is needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a teaching system that meets the safety requirements of teaching demonstration and standard operation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A teaching system, comprising a teaching apparatus and a controller, wherein the teaching apparatus comprises a calender, a cotton gin, a fan and an electrostatic generator; and the controller controls the operation of the teaching apparatus;

[0006] The fan comprises an air outlet;

[0007] The calender and the cotton gin both include a frame and a driving motor;

[0008] The frame has a feeding side, and the frame includes an upper baffle plate arranged above the feeding side and a lower baffle plate arranged at the bottom of the feeding side; the upper baffle plate is hollow inside, and a first air outlet is arranged at the bottom of the upper baffle plate, the lower baffle plate is hollow inside, and a second air outlet is arranged at the top of the lower baffle plate; the interior of the upper baffle plate and the interior of the lower baffle plate are respectively connected to the air outlet of the fan; a plurality of flexible conductive wires are arranged on the first air outlet, and a plurality of flexible conductive wires are arranged on the second air outlet; the flexible conductive wires are respectively electrically connected to the electrostatic generator so that the flexible conductive wires on the first air outlet and the second air outlet have different charges;

[0009] When the teaching system is working, the controller starts the calender, the cotton gin, the fan and the electrostatic generator, and performs a detection operation when the softened wax plate is fed into the calender from the feeding side, and a wax sheet is obtained after the wax plate is fed into the calender from the feeding side, and the controller performs a detection operation when the wax sheet is fed into the cotton gin from the feeding side; the sum of the lengths of the flexible conductive wires of the first air outlet and the second air outlet is X, the distance between the upper baffle and the lower baffle is Y, YX=Z, c<Z<b; wherein b is the thickness of the wax plate, c is the thickness of the wax sheet, and Z is the interval between the flexible conductive wires of the first air outlet and the second air outlet;

[0010] The controller performs a detection operation including: when the fan is working, the flexible conductive wire is blown by the airflow, so that the flexible conductive wire on the first air outlet floats downward and the flexible conductive wire on the second air outlet floats upward. After the blowing is completed, the positive pole of the electrostatic generator is electrically connected to the flexible conductive wire on the first air outlet, and the negative pole is electrically connected to the flexible conductive wire on the second air outlet; the flexible conductive wire on the first air outlet is positively charged, and the flexible conductive wire on the second air outlet is negatively charged; the controller is electrically connected to the flexible conductive wires of the first air outlet and the second air outlet respectively and performs a judgment action, the judgment action including: judging whether the charge amount of the flexible conductive wire fluctuates beyond a preset range, if so, it is determined to be in contact with the human body, at which time the controller controls the drive motor to stop urgently, otherwise it continues; the detection operation standardizes the actions of the operators and ensures the safety during the teaching demonstration;

[0011] The controller controls the electrostatic generator to periodically reset the charges of the flexible conductive threads of the first air outlet and the second air outlet.

[0012] Preferably, the calender and ginning machine each include an upper roller, a lower roller and a reciprocating cylinder;

[0013] Tracks are respectively arranged on both sides of the frame, the two ends of the upper roller are arranged on the tracks on both sides of the frame, and the two ends of the lower roller are arranged on the tracks on both sides of the frame; the upper roller and the lower roller are arranged up and down; the reciprocating cylinder drives the upper roller to move up and down along the track;

[0014] The reciprocating cylinder is electrically connected to a controller, and the controller controls the driving motor to synchronously control the reciprocating cylinder to drive the motor to move upward along the track when an emergency stop occurs.

[0015] Preferably, the gap between the upper roller and the lower roller is a pressing interval, and the straight-line distance from the first air outlet to the pressing interval is greater than the length of the flexible conductive thread on the first air outlet; the straight-line distance from the second air outlet to the pressing interval is greater than the length of the flexible conductive thread on the second air outlet.

[0016] Preferably, the drive motor further comprises an emergency stop switch, and when the emergency stop switch is pressed, the drive motor is powered off and the reciprocating cylinder drives the drive motor to move upward along the track.

[0017] Preferably, the teaching system also includes practice operations when working, and the practice operations include: starting the calender, cotton gin, fan and electrostatic generator, while the drive motor of the calender and the drive motor of the cotton gin are in the off state, the reciprocating cylinder is at the top dead center, and the remaining operations are the same as the detection operations.

[0018] Preferably, fluctuations exceeding the preset range include: obtaining the charge at the current moment and the charge 0.1s ago, with time as the X-axis and the charge as the Y-axis, forming a line segment from the two points, and selecting the line segment to obtain the slope of the line segment. The preset range is -1 to 0. If it is lower than, determine whether the slope of the line segment is less than the preset range. If so, it is deemed to be a fluctuation exceeding the preset range.

[0019] Preferably, the air outlet directions of the first air outlet and the second air outlet are toward the outside of the feeding side, so that the flexible conductive yarn floats toward the outside of the feeding side;

[0020] The teaching system also includes a speaker, which is electrically connected to the controller; when determining whether the charge amount of the flexible conductive thread fluctuates beyond a preset range, if so, it is determined to be in contact with the human body, and the controller controls the speaker to issue a prompt.

[0021] Preferably, the teaching system further comprises an alarm, which is electrically connected to the controller. When the controller controls the driving motor to stop suddenly, the alarm is simultaneously controlled to issue a warning.

[0022] Preferably, the flexible conductive wire on the second air outlet is arranged to be inclined outwardly toward the feeding side.

[0023] Preferably, the flexible conductive thread is a conductive yarn.

[0024] The beneficial effects of the present invention are as follows: by utilizing the insulating properties of beeswax and the conductive properties of the human body, combined with flexible conductive wires and an electrostatic generator, the flexible conductive wires at the first air outlet and the second air outlet have different charges, can attract each other, and will not repel each other, and combined with the operation of blowing first and then powering on, the flexible conductive wires can be prevented from contacting the frame or other components to cause the charged wire to fail; by using the upper and lower groups of flexible conductive wires with different charges, combined with c<Z<b, the two groups of conductive wires will not be in direct contact, that is, there is a distance or they are separated by a wax plate or wax sheet, thereby ensuring the accuracy of the charged wire, and at the same time ensuring that the wax plate or wax sheet can contact the flexible conductive wire when passing through the upper and lower groups of flexible conductive wires, thereby ensuring that the hand grasping the wax plate or wax sheet can be in contact with the flexible conductive wire, thereby ensuring the effectiveness of the judgment action, and once the human body comes into contact with the flexible conductive wire, it can cause potential conduction or imbalance, and then the controller can recognize and control the drive The electric motor can be stopped suddenly; and by regularly resetting the charge of the flexible conductive wires at the first air outlet and the second air outlet, the accuracy of the judgment can be ensured, and the problem of inaccurate judgment under long-term use can be avoided. For example, static electricity is generated when the fan is working, and static electricity is generated by air friction, etc., which causes the charge of the flexible conductive wire to accumulate and change, and then causes misjudgment; the flexible conductive wire will not cause damage to the students' fingers. At the same time, the students' fingers will be reminded when they touch the flexible conductive wire, and the second reminder can be achieved by cooperating with the airflow generated by the fan. The charged flexible conductive wire will generate static electricity when it comes into contact with the human body, and the students will be given a third warning to avoid accidents caused by the fingers of practical operators, such as students and teachers, entering the calender and ginning machine, ensuring the safety of teachers when they are teaching and practicing at the same time, and ensuring the safety during the teaching demonstration; at the same time, the actions of the practical operators can be standardized, which is convenient for forming correct actions, and realizing safe practical training and teaching of nest foundation making. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a calender or cotton ginning machine of a teaching system for a specific embodiment of the present invention (the calender and the cotton ginning machine have the same structure, that is, the upper roller and the lower roller are different. The upper roller and the lower roller of the calender have smooth surfaces, while the upper roller and the lower roller of the cotton ginning machine have patterns);

[0026] Figure 2 A schematic diagram of a calender or cotton ginning machine from another angle of a teaching system according to a specific embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a teaching system for use in a specific embodiment of the present invention;

[0028] Explanation of reference numerals: 1. Frame; 11. Upper baffle; 12. Lower baffle; 13. First air outlet; 14. Second air outlet; 15. Track; 16. Flexible conductive wire; 2. Upper roller; 3. Lower roller; 4. Reciprocating cylinder; 5. Wax board / wax sheet; 6. Hand / human body. DETAILED DESCRIPTION

[0029] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0030] Please refer to Figures 1 to 3 , a teaching system, comprising a calender, a cotton gin, a fan and an electrostatic generator; comprising a teaching apparatus and a controller, wherein the teaching apparatus comprises a calender, a cotton gin, a fan and an electrostatic generator; and the controller controls the operation of the teaching apparatus;

[0031] The fan comprises an air outlet;

[0032] The calender and the cotton gin both include a frame 1, a drive motor, and a controller;

[0033] The frame 1 has a feeding side, and the frame 1 includes an upper baffle 11 arranged above the feeding side and a lower baffle 12 arranged at the bottom of the feeding side; the upper baffle 11 is hollow inside, and a first air outlet 13 is arranged at the bottom of the upper baffle 11; the lower baffle 12 is hollow inside, and a second air outlet 14 is arranged at the top of the lower baffle 12; the interior of the upper baffle 11 and the interior of the lower baffle 12 are respectively connected to the air outlet of the fan; a plurality of flexible conductive threads 16 are arranged on the first air outlet 13, and a plurality of flexible conductive threads 16 are arranged on the second air outlet 14; the flexible conductive threads 16 are respectively electrically connected to the electrostatic generator so that the flexible conductive threads 16 on the first air outlet 13 and the second air outlet 14 have different charges;

[0034] When the teaching system is working, the controller starts the calender, the cotton gin, the fan and the electrostatic generator, and the controller performs a detection operation when the softened wax plate 5 is fed into the calender from the feeding side, and a wax sheet 5 is obtained after the wax plate 5 is fed into the calender from the feeding side, and the controller performs a detection operation when the wax sheet 5 is fed into the cotton gin from the feeding side; the sum of the lengths of the flexible conductive wire 16 of the first air outlet 13 and the flexible conductive wire 16 of the second air outlet 14 is X, and the distance between the upper baffle 11 and the lower baffle 12 is Y, YX=Z, c<Z<b; wherein b is the thickness of the wax plate 5, c is the thickness of the wax sheet 5, and Z is the interval between the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14;

[0035] The controller performs a detection operation including: when the fan is working, the flexible conductive wire 16 is blown by the airflow, so that the flexible conductive wire 16 on the first air outlet 13 floats downward and the flexible conductive wire 16 on the second air outlet 14 floats upward. After the blowing is completed, the positive pole of the electrostatic generator is electrically connected to the flexible conductive wire 16 on the first air outlet 13, and the negative pole is electrically connected to the flexible conductive wire 16 on the second air outlet 14; the flexible conductive wire 16 on the first air outlet 13 is positively charged, and the flexible conductive wire 16 on the second air outlet 14 is negatively charged; the controller is electrically connected to the flexible conductive wire 16 of the first air outlet 13 and the second air outlet 14 respectively and performs a judgment action, the judgment action including: judging whether the charge amount of the flexible conductive wire 16 fluctuates beyond a preset range, if so, it is determined to be in contact with the human body 6, at which time the controller controls the drive motor to stop urgently, otherwise it continues; the detection operation realizes the standardization of the actions of the actual operator;

[0036] The controller controls the electrostatic generator to periodically reset the charge of the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14 .

[0037] From the above description, it can be seen that by utilizing the characteristics of beeswax insulation and human body 6 conductivity, combined with the flexible conductive wire 16 and the electrostatic generator, the flexible conductive wire 16 of the first air outlet 13 and the second air outlet 14 has different charges, which can attract each other and will not repel each other, and combined with the operation of blowing first and then powering on, the flexible conductive wire 16 can prevent the frame 1 or other components from contacting and causing the charging to fail; by the upper and lower groups of flexible conductive wires 16 with different charges, combined with c<Z<b, the two groups of conductive wires will not come into direct contact, that is, there is a distance or they are separated by the wax plate or wax sheet 5, thereby ensuring the accuracy of charging, and at the same time, it can ensure that the wax plate or wax sheet 5 can contact the flexible conductive wire 16 when passing through the upper and lower groups of flexible conductive wires 16, thereby achieving that the hand 6 grasping the wax plate or wax sheet 5 can be in contact with the flexible conductive wire 16, and will not interfere with the entry of the wax plate 5 or wax sheet 5, thereby ensuring the effectiveness of the judgment action, once the human body 6 comes into contact with the flexible conductive wire 16, it can cause potential conduction or imbalance, thereby controlling The controller can realize the emergency stop of the control drive motor after identification; and by regularly resetting the charge of the flexible conductive wire 16 of the first air outlet 13 and the second air outlet 14, the accuracy of the judgment can be guaranteed, and the problem of inaccurate judgment under long-term use can be avoided. For example, static electricity is generated when the fan is working, static electricity is generated by air friction, etc., which causes the charge amount of the flexible conductive wire 16 to change after accumulation, and then causes misjudgment; the flexible conductive wire 16 will not cause damage to the student's hand 6 fingers. At the same time, the student's hand 6 fingers will be reminded when they touch the flexible conductive wire 16, and the second reminder can be achieved by cooperating with the airflow generated by the fan. Then, the flexible conductive wire 16 is charged and static electricity is generated when it contacts the human body 6, and the student is given a third warning to avoid accidents caused by the fingers of practical operators, such as students and teachers, entering the calender and ginning machine, ensuring the safety of teachers when teaching and practicing, and ensuring the safety during the teaching demonstration; at the same time, the actions of the practical operators can be standardized, which is convenient for forming correct actions and realizing safe nest foundation production practical training and teaching.

[0038] Furthermore, the calender and the ginning machine both include an upper roller 2, a lower roller 3 and a reciprocating cylinder 4;

[0039] Tracks 15 are respectively arranged on both sides of the frame 1, and both ends of the upper roller 2 are arranged on the tracks 15 on both sides of the frame 1, and both ends of the lower roller 3 are arranged on the tracks 15 on both sides of the frame 1; the upper roller 2 and the lower roller 3 are arranged up and down; the reciprocating cylinder 4 drives the upper roller 2 to move up and down along the track 15;

[0040] The reciprocating cylinder 4 is electrically connected to a controller, and the controller controls the driving motor to synchronously control the reciprocating cylinder 4 to move upward along the track 15 when an emergency stop occurs.

[0041] It can be seen from the above description that by synchronously controlling the reciprocating cylinder 4 to move upward when an emergency stop occurs, the pressing of the fingers of the hand 6 can be avoided.

[0042] Furthermore, the gap between the upper roller 2 and the lower roller 3 is a pressing interval, and the straight-line distance from the first air outlet 13 to the pressing interval is greater than the length of the flexible conductive thread 16 on the first air outlet 13; the straight-line distance from the second air outlet 14 to the pressing interval is greater than the length of the flexible conductive thread 16 on the second air outlet 14.

[0043] It can be seen from the above description that by setting the distance between the first air outlet 13, the second air outlet 14 and the pressing section, it is possible to prevent the flexible conductive thread 16 from being drawn into the pressing section and being damaged.

[0044] Furthermore, the driving motor also includes an emergency stop switch. When the emergency stop switch is pressed, the driving motor is powered off and the reciprocating cylinder 4 drives the driving motor to move upward along the track 15.

[0045] From the above description, it can be seen that by setting the emergency stop switch, controller failure or other failure situations can be avoided, ensuring that the drive motor can stop in time.

[0046] Furthermore, the teaching system also includes practice operations when it is working, and the practice operations include: starting the calender, cotton gin, fan and electrostatic generator, while the drive motor of the calender and the drive motor of the cotton gin are in the off state, the reciprocating cylinder 4 is at the top dead center, and the remaining operations are the same as the detection operations.

[0047] From the above description, we can see that through practice operations, students can know the scope of each action in advance, avoiding direct practice and increasing the probability of accidents.

[0048] Furthermore, fluctuations exceeding the preset range include: obtaining the charge at the current moment and the charge 0.1s ago, taking time as the X-axis and the charge as the Y-axis, forming a line segment from the two points, and selecting the line segment to obtain the slope of the line segment. The preset range is -1 to 0. If it is lower, determine whether the slope of the line segment is less than the preset range. If so, it is deemed to be a fluctuation exceeding the preset range.

[0049] From the above description, it can be seen that by selecting the slope as the judgment standard, due to the conductivity of the human body 6, the charge amount will drop rapidly at the moment of contact with the human body 6, that is, the slope is inclined downward. Using this slope as the judgment standard is intuitive and accurate.

[0050] Furthermore, the air outlet directions of the first air outlet 13 and the second air outlet 14 are toward the outside of the feeding side, so that the flexible conductive thread 16 floats toward the outside of the feeding side;

[0051] The teaching system also includes a speaker, which is electrically connected to the controller; when determining whether the charge amount of the flexible conductive wire 16 fluctuates beyond a preset range, if so, it is determined to be in contact with the human body 6, and the controller controls the speaker to issue a prompt.

[0052] From the above description, it can be seen that by adjusting the air outlet direction of the first air outlet 13 and the second air outlet 14 toward the outside of the feeding side, the flexible conductive thread 16 floats outward and can come into contact with the human body 6 early. Once contact occurs, a reminder can be generated, which can leave enough reaction time for the students.

[0053] Furthermore, the teaching system also includes an alarm, which is electrically connected to the controller. When the controller controls the drive motor to stop suddenly, the alarm is simultaneously controlled to issue a warning.

[0054] From the above description, it can be seen that the warning issued by the alarm can facilitate teachers to respond quickly and avoid delayed processing.

[0055] Furthermore, the flexible conductive wire 16 on the second air outlet 14 is arranged to be inclined outwardly toward the feeding side.

[0056] From the above description, it can be seen that by tilting outward, the flexible conductive wire 16 can be prevented from falling onto the lower roller 3 and rubbing against the lower roller 3 after the fan is turned off, thereby preventing the flexible conductive wire 16 of the lower second air outlet 14 from being worn out due to long-term use, especially the flower roller.

[0057] Furthermore, the flexible conductive thread 16 is a conductive yarn.

[0058] From the above description, it can be seen that the conductive yarn, such as nylon conductive yarn and carbon fiber conductive yarn, is low-cost and easy to install, and can be quickly installed and replaced after falling off.

[0059] Embodiment 1

[0060] A teaching system, comprising a calender, a cotton gin, a fan and an electrostatic generator; comprising a teaching apparatus and a controller, wherein the teaching apparatus comprises the calender, the cotton gin, the fan and the electrostatic generator; and the controller controls the operation of the teaching apparatus;

[0061] The fan comprises an air outlet;

[0062] The calender and the cotton gin both include a frame 1, a drive motor, and a controller;

[0063] The frame 1 has a feeding side, and the frame 1 includes an upper baffle 11 arranged above the feeding side and a lower baffle 12 arranged at the bottom of the feeding side; the upper baffle 11 is hollow inside, and a first air outlet 13 is arranged at the bottom of the upper baffle 11; the lower baffle 12 is hollow inside, and a second air outlet 14 is arranged at the top of the lower baffle 12; the interior of the upper baffle 11 and the interior of the lower baffle 12 are respectively connected to the air outlet of the fan; a plurality of flexible conductive threads 16 are arranged on the first air outlet 13, and a plurality of flexible conductive threads 16 are arranged on the second air outlet 14; the flexible conductive threads 16 are respectively electrically connected to the electrostatic generator so that the flexible conductive threads 16 on the first air outlet 13 and the second air outlet 14 have different charges;

[0064] When the teaching system is working, the controller starts the calender, the cotton gin, the fan and the electrostatic generator, and the controller performs a detection operation when the softened wax plate 5 is fed into the calender from the feeding side, and a wax sheet 5 is obtained after the wax plate 5 is fed into the calender from the feeding side, and the controller performs a detection operation when the wax sheet 5 is fed into the cotton gin from the feeding side; the sum of the lengths of the flexible conductive wire 16 of the first air outlet 13 and the flexible conductive wire 16 of the second air outlet 14 is X, and the distance between the upper baffle 11 and the lower baffle 12 is Y, YX=Z, c<Z<b; wherein b is the thickness of the wax plate 5, c is the thickness of the wax sheet 5, and Z is the interval between the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14;

[0065] The controller performs a detection operation including: when the fan is working, the flexible conductive wire 16 is blown by the airflow, so that the flexible conductive wire 16 on the first air outlet 13 floats downward and the flexible conductive wire 16 on the second air outlet 14 floats upward. After the blowing is completed, the positive pole of the electrostatic generator is electrically connected to the flexible conductive wire 16 on the first air outlet 13, and the negative pole is electrically connected to the flexible conductive wire 16 on the second air outlet 14; the flexible conductive wire 16 on the first air outlet 13 is positively charged, and the flexible conductive wire 16 on the second air outlet 14 is negatively charged; the controller is electrically connected to the flexible conductive wire 16 of the first air outlet 13 and the second air outlet 14 respectively and performs a judgment action, the judgment action including: judging whether the charge amount of the flexible conductive wire 16 fluctuates beyond a preset range, if so, it is determined to be in contact with the human body 6, at which time the controller controls the drive motor to stop urgently, otherwise it continues; the detection operation realizes the standardization of the actions of the actual operator;

[0066] The controller controls the electrostatic generator to periodically reset the charge of the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14 .

[0067] The calender and ginning machine both include an upper roller 2, a lower roller 3 and a reciprocating cylinder 4;

[0068] Tracks 15 are respectively arranged on both sides of the frame 1, and both ends of the upper roller 2 are arranged on the tracks 15 on both sides of the frame 1, and both ends of the lower roller 3 are arranged on the tracks 15 on both sides of the frame 1; the upper roller 2 and the lower roller 3 are arranged up and down; the reciprocating cylinder 4 drives the upper roller 2 to move up and down along the track 15;

[0069] The reciprocating cylinder 4 is electrically connected to a controller, and the controller controls the driving motor to synchronously control the reciprocating cylinder 4 to move upward along the track 15 when an emergency stop occurs.

[0070] The gap between the upper roller 2 and the lower roller 3 is a pressing interval, and the straight-line distance from the first air outlet 13 to the pressing interval is greater than the length of the flexible conductive thread 16 on the first air outlet 13; the straight-line distance from the second air outlet 14 to the pressing interval is greater than the length of the flexible conductive thread 16 on the second air outlet 14.

[0071] The drive motor also includes an emergency stop switch. When the emergency stop switch is pressed, the drive motor is powered off and the reciprocating cylinder 4 drives the drive motor to move upward along the track 15.

[0072] The teaching system also includes practice operations when working, and the practice operations include: starting the calender, cotton gin, fan and electrostatic generator, while the drive motor of the calender and the drive motor of the cotton gin are in the off state, the reciprocating cylinder 4 is at the top dead center, and the remaining operations are the same as the detection operations.

[0073] Fluctuations exceeding the preset range include: obtaining the charge at the current moment and the charge 0.1s ago, with time as the X-axis and the charge as the Y-axis, forming a line segment from the two points, and selecting the line segment to obtain the slope of the line segment. The preset range is -1 to 0. If it is lower, determine whether the slope of the line segment is less than the preset range. If so, it is considered to be a fluctuation exceeding the preset range.

[0074] The air outlet directions of the first air outlet 13 and the second air outlet 14 are toward the outside of the feeding side, so that the flexible conductive thread 16 floats toward the outside of the feeding side;

[0075] The teaching system also includes a speaker, which is electrically connected to the controller; when determining whether the charge amount of the flexible conductive wire 16 fluctuates beyond a preset range, if so, it is determined to be in contact with the human body 6, and the controller controls the speaker to issue a prompt.

[0076] The teaching system also includes an alarm, which is electrically connected to the controller. When the controller controls the driving motor to stop suddenly, the alarm is controlled to issue a warning at the same time.

[0077] The flexible conductive wire 16 on the second air outlet 14 is arranged to be inclined outwardly toward the feeding side.

[0078] The flexible conductive thread 16 is a conductive yarn.

[0079] Embodiment 2

[0080] A teaching system, comprising a calender, a cotton gin, a fan and an electrostatic generator; comprising a teaching apparatus and a controller, wherein the teaching apparatus comprises the calender, the cotton gin, the fan and the electrostatic generator; and the controller controls the operation of the teaching apparatus;

[0081] The fan comprises an air outlet;

[0082] The calender and the cotton gin both include a frame 1, a drive motor, and a controller;

[0083] The frame 1 has a feeding side, and the frame 1 includes an upper baffle 11 arranged above the feeding side and a lower baffle 12 arranged at the bottom of the feeding side; the upper baffle 11 is hollow inside, and a first air outlet 13 is arranged at the bottom of the upper baffle 11; the lower baffle 12 is hollow inside, and a second air outlet 14 is arranged at the top of the lower baffle 12; the interior of the upper baffle 11 and the interior of the lower baffle 12 are respectively connected to the air outlet of the fan; a plurality of flexible conductive threads 16 are arranged on the first air outlet 13, and a plurality of flexible conductive threads 16 are arranged on the second air outlet 14; the flexible conductive threads 16 are respectively electrically connected to the electrostatic generator so that the flexible conductive threads 16 on the first air outlet 13 and the second air outlet 14 have different charges;

[0084] When the teaching system is working, the controller starts the calender, the cotton gin, the fan and the electrostatic generator, and the controller performs a detection operation when the softened wax plate 5 is fed into the calender from the feeding side, and a wax sheet 5 is obtained after the wax plate 5 is fed into the calender from the feeding side, and the controller performs a detection operation when the wax sheet 5 is fed into the cotton gin from the feeding side; the sum of the lengths of the flexible conductive wire 16 of the first air outlet 13 and the flexible conductive wire 16 of the second air outlet 14 is X, and the distance between the upper baffle 11 and the lower baffle 12 is Y, YX=Z, c<Z<b; wherein b is the thickness of the wax plate 5, c is the thickness of the wax sheet 5, and Z is the interval between the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14;

[0085] The controller performs a detection operation including: when the fan is working, the flexible conductive wire 16 is blown by the airflow, so that the flexible conductive wire 16 on the first air outlet 13 floats downward and the flexible conductive wire 16 on the second air outlet 14 floats upward. After the blowing is completed, the positive pole of the electrostatic generator is electrically connected to the flexible conductive wire 16 on the first air outlet 13, and the negative pole is electrically connected to the flexible conductive wire 16 on the second air outlet 14; the flexible conductive wire 16 on the first air outlet 13 is positively charged, and the flexible conductive wire 16 on the second air outlet 14 is negatively charged; the controller is electrically connected to the flexible conductive wire 16 of the first air outlet 13 and the second air outlet 14 respectively and performs a judgment action, the judgment action including: judging whether the charge amount of the flexible conductive wire 16 fluctuates beyond a preset range, if so, it is determined to be in contact with the human body 6, at which time the controller controls the drive motor to stop urgently, otherwise it continues; the detection operation realizes the standardization of the actions of the actual operator;

[0086] The controller controls the electrostatic generator to periodically reset the charge of the flexible conductive wires 16 of the first air outlet 13 and the second air outlet 14 .

[0087] The calender and ginning machine both include an upper roller 2, a lower roller 3 and a reciprocating cylinder 4;

[0088] Tracks 15 are respectively arranged on both sides of the frame 1, and both ends of the upper roller 2 are arranged on the tracks 15 on both sides of the frame 1, and both ends of the lower roller 3 are arranged on the tracks 15 on both sides of the frame 1; the upper roller 2 and the lower roller 3 are arranged up and down; the reciprocating cylinder 4 drives the upper roller 2 to move up and down along the track 15;

[0089] The reciprocating cylinder 4 is electrically connected to a controller, and the controller controls the driving motor to synchronously control the reciprocating cylinder 4 to move upward along the track 15 when an emergency stop occurs.

[0090] The gap between the upper roller 2 and the lower roller 3 is a pressing interval, and the straight-line distance from the first air outlet 13 to the pressing interval is greater than the length of the flexible conductive thread 16 on the first air outlet 13; the straight-line distance from the second air outlet 14 to the pressing interval is greater than the length of the flexible conductive thread 16 on the second air outlet 14.

[0091] The drive motor also includes an emergency stop switch. When the emergency stop switch is pressed, the drive motor is powered off and the reciprocating cylinder 4 drives the drive motor to move upward along the track 15.

[0092] The teaching system also includes practice operations when working, and the practice operations include: starting the calender, cotton gin, fan and electrostatic generator, while the drive motor of the calender and the drive motor of the cotton gin are in the off state, the reciprocating cylinder 4 is at the top dead center, and the remaining operations are the same as the detection operations.

[0093] Fluctuations exceeding the preset range include: obtaining the charge at the current moment and the charge 0.1s ago, with time as the X-axis and the charge as the Y-axis, forming a line segment from the two points, and selecting the line segment to obtain the slope of the line segment. The preset range is -1 to 0. If it is lower, determine whether the slope of the line segment is less than the preset range. If so, it is considered to be a fluctuation exceeding the preset range.

[0094] The teaching system also includes an alarm, which is electrically connected to the controller. When the controller controls the driving motor to stop suddenly, the alarm is controlled to issue a warning at the same time.

[0095] The flexible conductive wire 16 on the second air outlet 14 is arranged to be inclined outwardly toward the feeding side.

[0096] The flexible conductive thread 16 is a conductive yarn.

[0097] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A teaching system, characterized in that: It comprises a teaching apparatus and a controller, wherein the teaching apparatus comprises a calender, a cotton gin, a fan and an electrostatic generator; and the controller controls the operation of the teaching apparatus; The fan comprises an air outlet; The calender and the cotton gin both include a frame and a driving motor; The frame has a feeding side, and the frame includes an upper baffle plate arranged above the feeding side and a lower baffle plate arranged at the bottom of the feeding side; the upper baffle plate is hollow inside, and a first air outlet is arranged at the bottom of the upper baffle plate, the lower baffle plate is hollow inside, and a second air outlet is arranged at the top of the lower baffle plate; the interior of the upper baffle plate and the interior of the lower baffle plate are respectively connected to the air outlet of the fan; a plurality of flexible conductive wires are arranged on the first air outlet, and a plurality of flexible conductive wires are arranged on the second air outlet; the flexible conductive wires are respectively electrically connected to the electrostatic generator so that the flexible conductive wires on the first air outlet and the second air outlet have different charges; When the teaching system is working, the controller starts the calender, the cotton gin, the fan and the electrostatic generator, and performs a detection operation when the softened wax plate is fed into the calender from the feeding side, and a wax sheet is obtained after the wax plate is fed into the calender from the feeding side, and the controller performs a detection operation when the wax sheet is fed into the cotton gin from the feeding side; the sum of the lengths of the flexible conductive wires of the first air outlet and the second air outlet is X, the distance between the upper baffle and the lower baffle is Y, YX=Z, c<Z<b; wherein b is the thickness of the wax plate, c is the thickness of the wax sheet, and Z is the interval between the flexible conductive wires of the first air outlet and the second air outlet; The controller performs the detection operation including: when the fan is working, the flexible conductive wire is blown by the airflow, so that the flexible conductive wire on the first air outlet floats downward and the flexible conductive wire on the second air outlet floats upward, and after the blowing is completed, the positive pole of the electrostatic generator is electrically connected to the flexible conductive wire on the first air outlet, and the negative pole is electrically connected to the flexible conductive wire on the second air outlet; the flexible conductive wire on the first air outlet is positively charged, and the flexible conductive wire on the second air outlet is negatively charged; the controller is electrically connected to the flexible conductive wires of the first air outlet and the second air outlet respectively and performs a judgment action, the judgment action including: judging whether the charge amount of the flexible conductive wire fluctuates beyond a preset range, if so, it is determined to be in contact with the human body, at which time the controller controls the drive motor to stop urgently, otherwise it continues; the detection operation realizes safety in the teaching demonstration process; The controller controls the electrostatic generator to periodically reset the charges of the flexible conductive threads of the first air outlet and the second air outlet.

2. The teaching system according to claim 1, characterized in that: The calender and ginning machine both include an upper roller, a lower roller and a reciprocating cylinder; Tracks are respectively arranged on both sides of the frame, the two ends of the upper roller are arranged on the tracks on both sides of the frame, and the two ends of the lower roller are arranged on the tracks on both sides of the frame; the upper roller and the lower roller are arranged up and down; the reciprocating cylinder drives the upper roller to move up and down along the track; The reciprocating cylinder is electrically connected to a controller, and the controller controls the driving motor to synchronously control the reciprocating cylinder to drive the motor to move upward along the track when an emergency stop occurs.

3. The teaching system according to claim 2, characterized in that: The gap between the upper roller and the lower roller is a pressing interval, and the straight-line distance from the first air outlet to the pressing interval is greater than the length of the flexible conductive thread on the first air outlet; the straight-line distance from the second air outlet to the pressing interval is greater than the length of the flexible conductive thread on the second air outlet.

4. The teaching system according to claim 2, characterized in that: The driving motor also includes an emergency stop switch. When the emergency stop switch is pressed, the driving motor is powered off and the reciprocating cylinder drives the motor to move upward along the track.

5. The teaching system according to claim 2, characterized in that: The teaching system also includes practice operations when working, and the practice operations include: starting the calender, cotton gin, fan and electrostatic generator, while the drive motor of the calender and the drive motor of the cotton gin are in the off state, the reciprocating cylinder is at the top dead center, and the remaining operations are the same as the detection operations.

6. The teaching system according to claim 1, characterized in that: Fluctuations exceeding the preset range include: obtaining the charge at the current moment and the charge 0.1s ago, with time as the X-axis and the charge as the Y-axis, forming a line segment from the two points, and selecting the line segment to obtain the slope of the line segment. The preset range is -1 to 0. If it is lower, determine whether the slope of the line segment is less than the preset range. If so, it is considered to be a fluctuation exceeding the preset range.

7. The teaching system according to claim 1, characterized in that: The air outlet directions of the first air outlet and the second air outlet are toward the outside of the feeding side, so that the flexible conductive yarn floats toward the outside of the feeding side; The teaching system also includes a speaker, which is electrically connected to the controller; when determining whether the charge amount of the flexible conductive thread fluctuates beyond a preset range, if so, it is determined to be in contact with the human body, and the controller controls the speaker to issue a prompt.

8. The teaching system according to claim 1, characterized in that: The teaching system also includes an alarm, which is electrically connected to the controller. When the controller controls the driving motor to stop suddenly, the alarm is controlled to issue a warning at the same time.

9. The teaching system according to claim 1, characterized in that: The flexible conductive wire on the second air outlet is arranged to be inclined outwardly toward the feeding side.

10. The teaching system according to claim 1, characterized in that: The flexible conductive thread is a conductive yarn.

Images