A method and system for preventing loss of microswitch signals for a drum tilter

Abstract

The application discloses a method and system for preventing microswitch signal loss of a roller jacking device. The method comprises the following steps: when the jacking device is jacked up or falls down, and the microswitch signal is lost, the front and rear jacking device running time exceeds the preset time, the jacking device running time alarm is sent, and the jacking device is stopped; when the intermediate flag position is 1, and the four lower limit microswitch signals of the jacking device all appear, the four lower limit microswitch signals, the intermediate flag position and the signal exceeding the preset time are used to solve the problem of microswitch signal flickering or loss caused by vibration and other factors; in the jacking process, the four lower limit microswitch signals are forced to be set to 1 when the microswitch signal is flickered or lost due to some factors, and the preheating production can be started. The technical content disclosed by the application can prevent the problem of product quality caused by the shutdown due to the microswitch flickering or loss in the production process.

Description

Technical Field

[0001] This invention relates to the field of cigarette equipment technology, and more specifically, to a method and system for preventing the loss of micro-switch signals in a roller lifting device. Background Technology

[0002] The tobacco industry's tobacco processing production lines contain many roller-type equipment, such as rollers for loosening and rehydrating machines, rollers for drying leaf strands, and rollers for flavoring and adding ingredients. When these roller-type machines are not in operation, the contact area between the roller and the supporting rollers (some are made of nylon) is line contact. This line contact is small and easily causes deformation of the roller or supporting roller, resulting in grooves on the contact surface. This leads to unstable roller operation during production, causing swaying, vibration, and noise. Therefore, roller-type equipment is now generally equipped with an electric roller lifting device. One electric roller lifting device is installed at each of the front and rear ends of the roller. The lifting device generally consists of a motor, reducer, connector, shaft driving the lifting device, hardwood supports, and upper and lower limit position microswitches. After production is completed, manually pressing the jacking button or setting the jacking center marker via the cooling completion signal causes the jacking device motor reducer to move in the jacking direction. This, through the coupling, drives the shaft to lift the hardwood roller upwards, causing the roller to detach from the support rollers by a few millimeters. This triggers the upper limit microswitches on both sides of the jacking device. When both microswitches are triggered, the motor driving the jacking device is shut off. Before preheating production, manually pressing the lower button or setting the lowering center marker after preheating starts causes the jacking device motor reducer to move in the lowering direction. This, through the coupling, drives the shaft to lift the jacking device, causing the hardwood roller to fall onto the support rollers. Simultaneously, this triggers the lower limit microswitches on both sides of the jacking device. When both microswitches are triggered, the motor driving the jacking device is shut off. Since there is a jacking device at each end of the roller, a total of eight microswitches are used to detect the upper and lower limit positions of the jacking device. These microswitches frequently experience malfunctions such as broken or loose wiring, vertical displacement of the microswitch position, poor contact of the microswitch contacts, and microswitch damage. When the microswitch wiring is broken or loose, the microswitch is displaced, or the switch is damaged, the lifting device will operate for extended periods during lifting or lowering, leading to damage to the reducer and shaft-driven lifting device. In particular, when the lower limit position microswitch for detecting the lowering position experiences poor contact, loose fixing, displacement, or loose wiring, vibrations during production can cause the lower limit position microswitch signal to flicker or be lost, resulting in the shutdown of the entire equipment and affecting product quality.

[0003] Currently, most of the lifting devices used in the roller-type equipment of the tobacco processing production line in China are electric lifting devices, while hydraulic and manual lifting devices have been largely phased out. The characteristics of electric lifting devices: In domestically produced roller-type equipment, pressing the lifting button in manual mode automatically lifts the roller off the support rollers, or pressing the lowering button in manual mode automatically lowers the roller onto the support rollers. The Hongni thin-plate drying machine uses both methods and, in automatic mode, after preheating and starting, the electric lifting device automatically lowers the roller onto the support rollers. After cooling, the electric lifting device automatically lifts the roller off the support rollers. However, the biggest drawback of electric lifting devices is that when the microswitch detecting the lower limit position of the lower limit position malfunctions, such as poor contact, loose fixing, or loose wiring, vibrations during production can cause the microswitch signal to flicker or be lost, leading to a shutdown of the entire equipment and affecting product quality.

[0004] Therefore, how to provide a method and system to prevent the loss of micro-switch signals in the roller jacking device has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for preventing the loss of micro-switch signals in a roller jacking device.

[0006] The first aspect of this invention discloses a method for preventing the loss of microswitch signals in a roller jacking device; the method includes:

[0007] Step S1: When the lifting device is lifted or lowered, the motor of the lifting device will run continuously due to the loss of the micro switch signal, which will cause damage to the lifting device. The motor of the lifting device of the front and rear rollers will run. When the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped.

[0008] Step S2: When the preheating start of the drying machine in automatic mode or the lowering button is pressed in manual mode, the lowering middle mark position is 1, and the signals of the four lower limit micro switches of the lifting device all appear. The four lower limit micro switch signals, the middle mark position and the signal exceeding the preset time are used to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0009] Step S3: If the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, the four lower limit micro switch signals are forcibly set to 1 to start preheating production.

[0010] According to the method of the first aspect of the present invention, in step S1, the method of issuing an alarm for excessively long operating time of the jacking device and stopping the operation of the jacking device when the running time exceeds a preset time includes:

[0011] When the running time exceeds the preset time, the delayed engagement timer immediately issues an alarm for excessive running time of the lifting device and stops the operation of the lifting device; the delay time of the delayed engagement timer is the preset time.

[0012] According to the method of the first aspect of the present invention, in step S1, the preset time is 115s.

[0013] According to a method of the first aspect of the present invention, in step S2, the method for solving the problem of the entire equipment stopping due to the interruption or loss of microswitch signals caused by factors such as vibration during production, by utilizing the four lower limit microswitch signals, the intermediate flag, and the signal exceeding a preset time, includes:

[0014] The four lower limit micro switch signals and the intermediate flag are combined into a statement SR. Then, the signal exceeding the preset time is assigned to the four lower limit micro switch signals to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0015] According to the method of the first aspect of the present invention, in step S2, the method of combining the four lower limit micro switch signals and the intermediate flag bit into a statement SR includes:

[0016] Using the statement SR, the normally open point of the intermediate flag bit and the normally open points of the four lower limit micro switch signals are connected in series to form a signal and assigned to the S bit of SR, and the normally open point of the intermediate flag bit is assigned to the R bit of SR.

[0017] According to the method of the first aspect of the present invention, in step S3, the step of forcibly setting the four lower limit micro-switch signals to 1 to initiate preheating production includes:

[0018] A forced button is set on the operation screen. By selecting the forced button and then pressing the drop button, the input signals of the four lower limit micro switches are forced to be set to 1, and preheating production can be started.

[0019] According to the method of the first aspect of the present invention, in step S3, the forced button is a password button.

[0020] A second aspect of the present invention discloses a system for preventing the loss of microswitch signals in a roller jacking device; the system includes:

[0021] The first processing module is configured to, when the lifting device motor runs continuously and causes damage to the lifting device due to the loss of micro switch signal during the lifting or lowering process, the front and rear roller lifting device motors will run, and when the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped.

[0022] The second processing module is configured to, when the preheating start is in automatic mode or the lowering button is pressed in manual mode, the lowering intermediate marker position is 1, and the signals of the four lower limit micro switches of the lifting device all appear, use the four lower limit micro switch signals, the intermediate marker position and the signal exceeding the preset time to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0023] The third processing module is configured to, when the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, force the four lower limit micro switch signals to be set to 1 so that preheating production can be started.

[0024] A third aspect of this invention discloses an electronic device. The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of a method for preventing the loss of a microswitch signal in a roller lifting device according to any one of the first aspects of this disclosure.

[0025] A fourth aspect of this invention discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a method for preventing the loss of a microswitch signal in a roller jacking device according to any one of the first aspects of this disclosure.

[0026] According to the technical content disclosed in this invention, the following beneficial effects are achieved: the solution is feasible, the design is simple, the function is practical, the operation is reliable, and it can quickly determine, handle, and prevent many problems that may occur during the lifting or lowering of the electric jacking device in the roller process. Furthermore, it can prevent downtime caused by the intermittent disconnection or loss of microswitches during production, thus avoiding impacts on product quality. Simultaneously, it can improve the effective operating rate of the equipment without delaying production. It can be widely applied to other roller-type jacking devices in the tobacco industry. It can also be applied to solve the problem of intermittent disconnection or loss of signals from detection devices in other industries during production.

[0027] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0029] Figure 1 This is a flowchart illustrating a method for preventing the loss of microswitch signals in a roller jacking device according to an embodiment.

[0030] Figure 2 This is a schematic diagram of the roller lifting device provided according to the embodiment;

[0031] Figure 3 This is a diagram showing the signal distribution of the microswitches in the front and rear lifting device of the drum according to an embodiment.

[0032] Figure 4 This is a flowchart illustrating the program design for preventing the microswitch from falling and flashing or being lost during production, according to an embodiment.

[0033] Figure 5 This is a flowchart illustrating the program design for preventing the microswitch from flickering or being lost during the lifting process, according to an embodiment.

[0034] Figure 6 This is a structural diagram of a system for preventing the loss of microswitch signals in a roller lifting device according to an embodiment of the present invention;

[0035] Figure 7 This is a structural diagram of an electronic device according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached diagram: 1-Lifting device motor, 2-Left lower limit micro switch, 3-Left upper limit micro switch, 4-Left shaft drive lifting device, 5-Left coupling, 6-Reducer, 7-Left support roller, 8-Left hardwood saddle, 9-Drum, 10-Right hardwood saddle, 11-Right support roller, 12-Right coupling, 13-Right shaft drive lifting device, 14-Right upper limit micro switch, 15-Right lower limit micro switch, 21-Drum motor frequency converter, 22-Rear left lower limit position Micro switch, 23-rear right lower limit micro switch, 24-rear left upper limit micro switch, 25-rear right upper limit micro switch, 26-rear chamber of the drying machine, 27-front chamber of the drying machine, 28-front right upper limit micro switch, 29-front left upper limit micro switch, 30-front right lower limit micro switch, 31-front left lower limit micro switch, 32-motor of the front lifting device of the drum, 33-direction of tobacco movement, 34-drum, 35-motor of the rear lifting device of the drum. Detailed Implementation

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0040] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] Example 1:

[0043] This invention discloses a method for preventing the loss of micro-switch signals in a roller lifting device. Figure 1 This is a flowchart illustrating a method for preventing the loss of microswitch signals in a roller jacking device according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes:

[0044] Step S1: When the lifting device is lifted or lowered, the motor of the lifting device will run continuously due to the loss of the micro switch signal, which will cause damage to the lifting device. The motor of the lifting device of the front and rear rollers will run. When the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped.

[0045] Step S2: When the preheating start of the drying machine in automatic mode or the lowering button is pressed in manual mode, the lowering middle mark position is 1, and the signals of the four lower limit micro switches of the lifting device all appear. The four lower limit micro switch signals, the middle mark position and the signal exceeding the preset time are used to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0046] Step S3: If the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, the four lower limit micro switch signals are forcibly set to 1 to start preheating production.

[0047] In step S1, if the lifting device motor continues to run and causes damage to the lifting device due to the loss of micro switch signal during the lifting or lowering process, the front and rear roller lifting device motors will run. When the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will stop running.

[0048] In some embodiments, in step S1, the method of issuing an alarm for excessively long operating time of the jacking device and stopping the operation of the jacking device when the running time exceeds a preset time includes:

[0049] When the running time exceeds the preset time, the delayed engagement timer immediately issues an alarm for excessive running time of the lifting device and stops the operation of the lifting device; the delay time of the delayed engagement timer is the preset time.

[0050] The preset time is 115 seconds.

[0051] In step S2, when the preheating start is performed in automatic mode or the lowering button is pressed in manual mode, the lowering intermediate marker position is 1, and the signals of the four lower limit micro switches of the lifting device all appear. The four lower limit micro switch signals, the intermediate marker position, and the signal exceeding the preset time are used to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0052] In some embodiments, in step S2, the method for solving the problem of the entire equipment stopping due to the interruption or loss of microswitch signals caused by vibration and other factors during production, by utilizing the four lower limit microswitch signals, the intermediate flag, and the signal exceeding a preset time, includes:

[0053] The four lower limit micro switch signals and the intermediate flag are combined into a statement SR. Then, the signal exceeding the preset time is assigned to the four lower limit micro switch signals to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0054] The method for combining the four lower limit micro switch signals and the intermediate flag bit into a single statement SR includes:

[0055] Using the statement SR, the normally open point of the intermediate flag bit and the normally open points of the four lower limit micro switch signals are connected in series to form a signal and assigned to the S bit of SR, and the normally open point of the intermediate flag bit is assigned to the R bit of SR.

[0056] In step S3, if the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, the four lower limit micro switch signals are forcibly set to 1 to start preheating production.

[0057] In some embodiments, in step S3, the step of forcibly setting the four lower limit micro-switch signals to 1 to initiate preheating production includes:

[0058] A forced button is set on the operation screen. By selecting the forced button and then pressing the drop button, the input signals of the four lower limit micro switches are forced to be set to 1, and preheating production can be started.

[0059] The forced button is a password button.

[0060] In summary, the solution proposed in this invention is feasible, simple in design, practical in function, and reliable in operation. It can quickly identify, handle, and prevent many problems that may occur during the lifting or lowering of the electric jacking device in the roller, and further prevent downtime caused by the intermittent disconnection or loss of microswitches during production, thus affecting product quality. At the same time, it can improve the effective operating rate of the equipment without delaying production. It can be widely used in other roller-type jacking devices in the tobacco industry. It can also be applied to solve the problem of intermittent disconnection or loss of signals from detection devices in other industries during production.

[0061] Example 2:

[0062] Step 1: First, analyze the structure and working principle of the electric roller lifting device of the thin plate drying machine. Its structure is as follows: Figure 2 As shown. The electric roller lifting device of the rainbow thin plate drying machine generally consists of a motor 1, a reducer 6, a left coupling 5, a right coupling 12, a left shaft driving lifting device 4, a right shaft driving lifting device 13, a left hardwood saddle 8, a right hardwood saddle 10, a left upper limit micro switch 3, a left lower limit micro switch 2, a right upper limit micro switch 14, and a right lower limit micro switch 15. The working principle is: the lifting process occurs after production is completed and cooling is finished, that is... Figure 2After the roller motor frequency converter 21 (the rainbow filament drying machine is a roller motor frequency converter driving four support roller motors) stops running, the lifting middle mark position is set by manually pressing the lifting button or by the automatic cooling completion signal, so that the lifting device motor 1 and reducer 6 run in the lifting direction. Through the left coupling 5 and the right coupling 12, the left shaft drives the lifting device 6 and the right shaft drives the lifting device 13 respectively, lifting the left hardwood saddle 8 and the right hardwood saddle 10 upward. After the roller 9 is separated from the left support roller 7 and the right support roller 11 by a few millimeters (generally 5-10mm), the left upper limit micro switch 3 and the right upper limit micro switch 14 of the lifting device are triggered. When both micro switches are triggered, the corresponding motor 1 driving the lifting device is turned off, and the roller lifting process is completed and the equipment stops. The descent process is initiated by manually pressing the descent button or by using the preheating start signal in automatic mode to position the descent center marker. This causes the lifting device motor 1 and reducer 6 to move in the descent direction. The left coupling 5 and right coupling 12 drive the left shaft to drive the lifting device 4 and the right shaft to drive the lifting device 13, respectively, which in turn drive the left hardwood roller 8 and the right hardwood roller 10 downwards. This causes the roller 9 to fall onto the left support roller 7 and the right support roller 11, triggering the lower left limit micro switch 2 and the lower right limit micro switch 15 of the lifting device. Once both micro switches are triggered, the corresponding motor 1 driving the lifting device is shut off, and the wire drying machine can then preheat for production.

[0063] Step 2: By analyzing the signal distribution diagrams of the motors and microswitches in the front and rear end lifting devices of the yarn drying machine drum, the corresponding faults are summarized. The signal distribution diagrams are as follows: Figure 3As shown. The electric roller lifting device of the Hongni yarn drying machine is equipped with one set at each of the front and rear ends of the roller. Therefore, there are a total of 8 microswitches for the upper and lower limit positions of the roller lifting device at the front and rear ends. They are: rear left lower limit microswitch 22 (signal I20.0), rear right lower limit microswitch 23 (signal I20.1), rear left upper limit microswitch 24 (signal I20.2), rear right upper limit microswitch 25 (signal I20.3), front right upper limit microswitch 28 (signal I20.4), front left upper limit microswitch 29 (signal I20.5), front right lower limit microswitch 30 (signal I20.6), and front left lower limit microswitch 31 (signal I20.7). The front jacking device drive motor 32 (falling operation signal is M32.0, jacking operation signal is M32.1), the rear jacking device drive motor 35 (falling operation signal is M35.0, jacking operation signal is M35.1), and the drum motor frequency converter 21 (operation signal is M50.0). Based on the faults encountered in daily work, three types of fault conditions are summarized. The first type of fault condition is when the micro switch has a broken or loose wiring, is displaced upwards or downwards, or is damaged, resulting in signal loss. In this case, the lifting device motor will run continuously, causing damage to the lifting device. For example, if either the rear left upper limit micro switch 24 signal I20.2 or the rear right upper limit micro switch 25 signal I20.3 is lost, the rear lifting device motor 35 will run continuously during the upward lifting process, causing damage to the rear lifting device. Another example is if either the front right lower limit micro switch 30 signal I20.6 or the front left lower limit micro switch 31 signal I20.7 is lost, the front lifting device drive motor 32 will run continuously during the descent process, causing damage to the front lifting device. The second type of fault occurs when the four lower limit position microswitches of the lifting device experience signal interruption or loss due to poor contact, insecure microswitch fixation, or loose wiring during production. This leads to an alarm and shutdown of the entire equipment, affecting product quality. Specifically, a signal interruption or loss from any of the following four lower limit position microswitches during production—I20.0 from the rear left lower limit position microswitch 22, I20.1 from the rear right lower limit position microswitch 23, I20.6 from the front right lower limit position microswitch 30, and I20.7 from the front left lower limit position microswitch 31—will cause the thin plate wire drying machine to stop. The third type of fault occurs when the four upper limit position microswitches of the lifting device experience signal interruption or loss during the lifting process due to poor contact, insecure microswitch fixation, or loose wiring. This prevents the lifting process from completing and the alarm cannot be canceled.

[0064] Step 3: Design an alarm program to prevent the first type of failure (damage to the lifting device due to loss of microswitch signal during lifting or lowering), such as... Figure 4 and Figure 5 The program design is as follows: Program 1: When the front lifting device motor 32 of the drum is running (falling operation signal M32.0 or lifting operation signal M32.1), the timer SD (named T100) is activated by a delay, and the parallel signal of M32.0 and M32.1 is assigned to the timer T100. When the running time exceeds a certain time (based on the time it takes for the drum to detach from the two front support rollers by 5-10mm during the lifting process of the front lifting device, this time must be measured through multiple tests, generally around 115s, and S5T#115S is assigned to the time setting of the timer T100), this time value can be modified in the equipment parameters on the operation screen according to the situation. If this time is exceeded (that is, when T100 has an output signal), an alarm for excessive running time of the front lifting device is immediately issued and the lifting device is stopped. Procedure 2: If, during the aforementioned time period, one of the microswitch signals I20.4 or I20.5 shows a position signal during the lifting process, and the other does not show a position signal after 20 seconds, an alarm indicating that the front-end lifting device needs inspection and balance adjustment is immediately issued. In other words, the series connection of the normally closed contact of T100 with the normally open contact of M32.1 and the normally open contact of I20.4 is assigned to IN1 of the XOR statement XOR(M80.0), the series connection of the normally closed contact of T100 with the normally open contact of M32.1 and the normally open contact of I20.5 is assigned to IN2 of M80.0, the output signal of M80.0 is assigned to timer SD (named T101), and ST#20s is assigned to the time setting of timer T101. When T101 outputs a signal, an alarm indicating that the front-end lifting device needs inspection and balance adjustment is immediately issued, and the lifting device operation is stopped. If, during the aforementioned time period, one of the microswitch signals I20.6 or I20.7 displays a "position" signal and the other does not display a "position" signal after 20 seconds, an alarm will be triggered indicating that the front-end lifting device needs inspection and balance adjustment, and operation will be stopped. The program design is the same as above. Program 3: When the rear-end lifting device motor 35 is lifting or lowering and a fault occurs as described in Program 2, the alarm program design is similar to Program 2. After all the above alarms occur, the corresponding microswitches must be inspected, adjusted, replaced, or mechanically adjusted. After repeatedly testing the machine using the lowering button M50.0 and the lifting button M50.1 and confirming that there are no errors, preheating production can proceed. Of course, the first type of fault only occurs during the lowering process before production and the lifting process after production and will not cause an alarm stop during production, resulting in a flow interruption and affecting quality. This design is only to prevent damage to the lifting device and to quickly detect faults to prevent flow interruptions caused by production stoppages.

[0065] Step 4: Design a forced operation button M150.0 on the thin plate drying machine operation screen. This button requires a technician password to operate. When forced operation is required, "√" will be displayed, and when forced operation is canceled, "×" will be displayed.

[0066] Step 5: Design a procedure to prevent the second type of failure (the entire equipment stopping due to the microswitch signal flickering or loss caused by vibration during production), such as... Figure 3 As shown. The program design is as follows: When the preheating start is in automatic mode of the drying machine or the lowering button M50.0 is pressed in manual mode, the lowering intermediate flag M100.0 is set to 1. The front lifting device motor 32 and the rear lifting device motor 35 of the drum move in the lowering direction. When the lowering is in place, the four lower limit micro switch signals I20.0, I20.1, I20.6, and I20.7 of the front and rear lifting devices of the drum all appear. At this time, the statement SR is used to open the normally open contact of the lowering intermediate flag M100.0 and the four lower limit micro switches. The normally open contacts of signals I20.0, I20.1, I20.6, and I20.7 are connected in series to form a signal. This signal is then connected in parallel with the forced button selection signal M150.0 and the signal M50.0 when the down button is pressed. This result is assigned to the S bit of SR (named M300.0). The normally open contact signal of the middle flag M100.1 is assigned to the R bit of M300.0. Finally, the output Q of M300.0 is assigned to the four lower limit micro switch signals I20.0, I20.1, I20.6, and I20.7. This design serves two purposes: First, it assigns a signal composed of the normally open contact of the falling intermediate flag M100.0 and the normally open contacts of the four lower limit microswitch signals I20.0, I20.1, I20.6, and I20.7, connected in series, to the S bit of SR, thereby forcing the four lower limit microswitch signals I20.0, I20.1, I20.6, and I20.7 to 1. This effectively prevents the entire equipment from shutting down due to the flickering or loss of the four lower limit microswitch signals caused by vibration or other factors during production. Second, it ensures that when the falling... If the first type of fault occurs during the process and repair is difficult (e.g., no spare parts available or difficult to adjust), it can be temporarily abandoned. As long as it is confirmed that the roller has indeed fallen onto the four support rollers, the signal formed by the series connection of the forced button M150.0 and the drop button M50.0 can be assigned to the S position of SR, thereby forcing the four lower limit micro switch signals I20.0, I20.1, I20.6, and I20.7 to 1 to preheat production. In addition, the roller can be lifted after the cooling is completed by resetting M300.0 by lifting the middle flag M100.1 without affecting the lifting of the roller.

[0067] Step 6: Design a procedure to prevent a third type of failure (the inability to complete the lifting process due to a flashing or loss of the microswitch signal caused by some factor), such as... Figure 4As shown. The program design is as follows: After cooling is completed in automatic mode M0.1 or manual mode M0.2, the lifting button M50.1 is pressed, and the lifting intermediate flag M100.1 is set to 1. The lifting device motor 32 at the front end of the drum and the lifting device motor 35 at the rear end of the drum move in the lifting direction. When the lifting is in place, the four upper limit micro switch signals I20.2, I20.3, I20.4, and I20.5 of the lifting device at the front and rear ends of the drum will appear. At this time, the statement SR is used to open the normally open point of the lifting intermediate flag M100.1. The signal formed by connecting the normally open contacts of the four upper limit micro switch signals I20.2, I20.3, I20.4, and I20.5 in series, and then connecting them in series with the forced button M150.0 and the push-up button M50.1, is assigned in parallel to the S bit of SR (named M300.1). The lowering intermediate flag M100.0 is assigned to the R bit of M300.1. Finally, the output Q of M300.1 is assigned to the four upper limit micro switch signals I20.2, I20.3, I20.4, and I20.5. This design serves two purposes. First, it assigns a signal composed of the normally open contact of the intermediate flag M100.1 and the normally open contacts of the four lower limit microswitch signals I20.2, I20.3, I20.4, and I20.5, connected in series, to the S bit of SR, thereby forcing the four upper limit microswitch signals I20.2, I20.3, I20.4, and I20.5 to 1. This effectively prevents the four upper limit microswitch signals from flickering or being lost due to some factor after the signal has been raised to the correct position, thus preventing the signal from being lost. There are two main issues: First, if the alarm keeps going off and the device cannot be lowered before the next production run, then if the first type of fault occurs during the lifting process and repair is difficult (e.g., no spare parts available or difficult to adjust), the process can be temporarily abandoned. As long as it is confirmed that the device is in place, the signal formed by connecting the forced button M150.0 and the lifting button M50.1 in series can be assigned to the S position of SR, thereby forcing the four upper limit micro switch signals I20.2, I20.3, I20.4, and I20.5 to 1, which will complete the lifting task without alarming.

[0068] Through the above-described program design, it is possible to quickly determine when the microswitch signal of the electric roller jacking device is lost due to some reason during the roller jacking or lowering process, immediately issue an alarm, and stop the operation of the jacking device to prevent damage to the jacking device. It can also effectively prevent the entire equipment from stopping due to the flashing or loss of microswitch signal caused by vibration or other factors during production, thus not affecting product quality. At the same time, it can also solve the problem of restarting production immediately after forcibly setting the microswitch signal when the jacking device malfunction is difficult to resolve. This method can be extended to the jacking devices of other roller-type equipment in the tobacco industry, as well as to the shutdown problem caused by the flashing or loss of detection device signals in other equipment in the tobacco industry (such as the loss of detection signal caused by the movement of the cylinder magnetic ring position during production). Of course, it can also be extended to solve the problem of flashing or loss of detection device signals in other industries during production.

[0069] Example 3:

[0070] This invention discloses a system for preventing the loss of micro-switch signals in a roller lifting device. Figure 6 This is a structural diagram of a system for preventing the loss of microswitch signals in a roller jacking device according to an embodiment of the present invention; as shown. Figure 6 As shown, the system 100 includes:

[0071] The first processing module 101 is configured to, when the lifting device motor runs continuously and causes damage to the lifting device due to the loss of micro switch signal during the lifting or lowering process, the front and rear roller lifting device motors will run, and when the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped.

[0072] The second processing module 102 is configured to, when the preheating start is in automatic mode or the lowering button is pressed in manual mode, the lowering intermediate mark position is 1, and the four lower limit micro switch signals of the lifting device all appear, use the four lower limit micro switch signals, the intermediate mark position and the signal exceeding the preset time to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0073] The third processing module 103 is configured to, when the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, force the four lower limit micro switch signals to be set to 1 so that preheating production can be started.

[0074] According to a system of a second aspect of the present invention, the first processing module 101 is specifically configured such that, when the running time exceeds a preset time, the method of issuing an alarm for excessively long running time of the jacking device and stopping the operation of the jacking device includes:

[0075] When the running time exceeds the preset time, the delayed engagement timer immediately issues an alarm for excessive running time of the lifting device and stops the operation of the lifting device; the delay time of the delayed engagement timer is the preset time.

[0076] The preset time is 115 seconds.

[0077] According to a system of a second aspect of the present invention, the second processing module 102 is specifically configured to, using the four lower limit microswitch signals, the intermediate flag, and the signal exceeding a preset time, solve the problem of the entire equipment stopping due to the interruption or loss of microswitch signals caused by factors such as vibration during production, including:

[0078] The four lower limit micro switch signals and the intermediate flag are combined into a statement SR. Then, the signal exceeding the preset time is assigned to the four lower limit micro switch signals to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration and other factors during the production process.

[0079] The method for combining the four lower limit micro switch signals and the intermediate flag bit into a single statement SR includes:

[0080] Using the statement SR, the normally open point of the intermediate flag bit and the normally open points of the four lower limit micro switch signals are connected in series to form a signal and assigned to the S bit of SR, and the normally open point of the intermediate flag bit is assigned to the R bit of SR.

[0081] According to the system of the second aspect of the present invention, the third processing module 103 is specifically configured such that the step of forcibly setting the four lower limit micro-switch signals to 1 to initiate preheating production includes:

[0082] A forced button is set on the operation screen. By selecting the forced button and then pressing the drop button, the input signals of the four lower limit micro switches are forced to be set to 1, and preheating production can be started.

[0083] The forced button is a password button.

[0084] Example 4:

[0085] This invention discloses an electronic device. The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method for preventing the loss of micro-switch signals in a roller jacking device according to any one of the embodiments disclosed in 1 of this invention.

[0086] Figure 7 This is a structural diagram of an electronic device according to an embodiment of the present invention, such as... Figure 7As shown, the electronic device includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, Near Field Communication (NFC), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the device's casing, or an external keyboard, touchpad, or mouse.

[0087] Those skilled in the art will understand that Figure 7 The structure shown is merely a structural diagram of the part related to the technical solution of this disclosure and does not constitute a limitation on the electronic device to which the solution of this application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0088] Example 5:

[0089] This invention discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a method for preventing the loss of a microswitch signal in a roller jacking device according to any one of Embodiment 1 of this invention.

[0090] Please note that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0091] The embodiments of the subject matter and functional operation described in this specification can be implemented in the following ways: digital electronic circuits, tangibly embodied computer software or firmware, computer hardware including the structures disclosed in this specification and their structural equivalents, or combinations thereof. Embodiments of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible, non-transitory program carrier for execution by a data processing apparatus or for controlling the operation of a data processing apparatus. Alternatively or additionally, the program instructions may be encoded on artificially generated propagation signals, such as machine-generated electrical, optical, or electromagnetic signals, which are generated to encode information and transmit it to a suitable receiving device for execution by the data processing apparatus. The computer storage medium may be a machine-readable storage device, a machine-readable storage substrate, a random or serial access memory device, or combinations thereof.

[0092] The processing and logic flow described in this specification can be executed by one or more programmable computers that execute one or more computer programs to perform corresponding functions by operating on input data and generating output. The processing and logic flow can also be executed by dedicated logic circuitry—such as FPGAs (Field-Programmable Gate Arrays) or ASICs (Application-Specific Integrated Circuits), and the device can also be implemented as dedicated logic circuitry.

[0093] Suitable computers for executing computer programs include, for example, general-purpose and / or special-purpose microprocessors, or any other type of central processing unit. Typically, the central processing unit receives instructions and data from read-only memory and / or random access memory. The basic components of a computer include a central processing unit for implementing or executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as disks, magneto-optical disks, or optical disks, or the computer will be operatively coupled to such mass storage devices to receive data from or transfer data to them, or both. However, a computer is not required to have such devices. Furthermore, a computer can be embedded in another device, such as a mobile phone, a personal digital assistant (PDA), a mobile audio or video player, a game console, a global positioning system (GPS) receiver, or a portable storage device such as a universal serial bus (USB) flash drive, to name a few.

[0094] Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, such as semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices), magnetic disks (e.g., internal hard disks or removable disks), magneto-optical disks, and CD-ROM and DVD-ROM disks. Processors and memory may be supplemented by or incorporated into dedicated logic circuitry.

[0095] While this specification contains numerous specific implementation details, these should not be construed as limiting the scope of any invention or the scope of the claims, but rather are primarily intended to describe features of specific embodiments of a particular invention. Certain features described in the various embodiments herein may also be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment may also be implemented separately in various embodiments or in any suitable sub-combination. Furthermore, while features may function in certain combinations as described above and even initially claimed in this way, one or more features from a claimed combination may be removed from that combination in some cases, and a claimed combination may refer to a sub-combination or a variation thereof.

[0096] Similarly, although the operations are depicted in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific order shown or sequentially, or requiring all illustrated operations to be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Furthermore, the separation of various system modules and components in the above embodiments should not be construed as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

[0097] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result. Furthermore, the processes depicted in the drawings are not necessarily shown in a specific order or sequence to achieve the desired result. In some implementations, multitasking and parallel processing may be advantageous.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0099] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A method for preventing the loss of microswitch signals in a roller jacking device, characterized in that, The method includes: Step S1: When the lifting device is lifting or lowering, the loss of the micro switch signal will cause the lifting device motor to run continuously, resulting in damage to the lifting device. When the front and rear roller lifting device motors are running and the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped. Step S2: When the drying machine starts preheating in automatic mode or the lowering button is pressed in manual mode, the lowering intermediate flag is set to 1. When the signals of the four lower limit micro switches of the lifting device appear, the four lower limit micro switch signals, the intermediate flag, and the signal exceeding the preset time are used to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration factors during the production process. Step S3: If the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, the four lower limit micro switch signals are forcibly set to 1 to start preheating production. In step S2, the method of using the four lower limit microswitch signals, the intermediate flag, and the signal exceeding the preset time to solve the problem of the entire equipment stopping due to the interruption or loss of microswitch signals caused by vibration during production includes: The four lower limit microswitch signals and the intermediate flag bit are combined into a single statement SR. Then, the signal exceeding the preset time is assigned to the four lower limit microswitch signals. This solves the problem of the entire equipment stopping due to the flickering or loss of microswitch signals caused by vibration during production. In step S2, the combination of the four lower limit microswitch signals and the intermediate flag bit into a single statement SR includes: Using the statement SR, the normally open point of the intermediate flag bit and the normally open points of the four lower limit micro switch signals are connected in series to form a signal and assigned to the S bit of SR, and the normally open point of the intermediate flag bit is assigned to the R bit of SR.

2. The method for preventing the loss of microswitch signal in a roller jacking device according to claim 1, characterized in that, In step S1, the process of issuing an alarm for excessively long operating time of the jacking device and stopping its operation when the running time exceeds a preset time includes: When the running time exceeds the preset time, the delayed engagement timer immediately issues an alarm for excessive running time of the lifting device and stops the operation of the lifting device; the delay time of the delayed engagement timer is the preset time.

3. The method for preventing the loss of microswitch signal in a roller jacking device according to claim 1, characterized in that, In step S1, the preset time is 115 seconds.

4. The method for preventing the loss of microswitch signal in a roller jacking device according to claim 1, characterized in that, In step S3, the step of forcibly setting the four lower limit micro-switch signals to 1 to initiate preheating production includes: A forced button is set on the operation screen. By selecting the forced button and then pressing the drop button, the input signals of the four lower limit micro switches are forced to be set to 1, and preheating production can be started.

5. A method for preventing the loss of microswitch signal in a roller jacking device according to claim 4, characterized in that, In step S3, the forced button is a password button.

6. A system for preventing the loss of microswitch signals in a roller jacking device, characterized in that, The system includes: The first processing module is configured to, when the lifting device is lifted or lowered, the loss of the micro switch signal will cause the lifting device motor to run continuously, resulting in damage to the lifting device. If the front and rear roller lifting device motors are running and the running time exceeds the preset time, an alarm for excessive running time of the lifting device will be issued and the lifting device will be stopped. The second processing module is configured to, when the preheating start is in automatic mode or the lowering button is pressed in manual mode, set the lowering intermediate flag to 1, and when all four lower limit micro switch signals of the lifting device appear, use the four lower limit micro switch signals, the intermediate flag, and the signal exceeding the preset time to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration factors during the production process. The method of using four lower limit microswitch signals, an intermediate flag, and a signal exceeding a preset time to solve the problem of equipment shutdown caused by the interruption or loss of microswitch signals due to vibration during production includes: The four lower limit micro switch signals and the intermediate flag bit are combined into a statement SR. Then, the signal that exceeds the preset time is assigned to the four lower limit micro switch signals to solve the problem of the entire equipment stopping due to the flashing or loss of micro switch signals caused by vibration during the production process. The step of combining the four lower limit micro switch signals and the intermediate flag bit into a single statement SR includes: Using the statement SR, the normally open point of the intermediate flag bit and the normally open points of the four lower limit micro switch signals are connected in series to form a signal and assigned to the S bit of SR, and the normally open point of the intermediate flag bit is assigned to the R bit of SR. The third processing module is configured to, when the micro switch signal is interrupted or lost due to some factor during the lifting process, resulting in the lifting process not being completed and the alarm not being canceled, force the four lower limit micro switch signals to be set to 1 so that preheating production can be started.

7. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method for preventing the loss of micro-switch signals of a roller lifting device according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for preventing the loss of micro-switch signals of a roller jacking device according to any one of claims 1 to 5.

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