Automatic control method of elevator guide rail conveying device

Abstract

The present invention discloses an automatic control method for an elevator guide rail conveying device, which is characterized by the following control method: a controller controls the cylinder to start; the cylinder pushes the two ends of the guide rail to move the guide rail to a set position, and the controller controls the timing module to perform timing; a sensor senses whether there is a guide rail at the set position, and the sensor sends a signal to the controller after sensing the guide rail. The controller receives information from the sensors at both ends simultaneously or within a set time interval, and the controller controls the linear conveying mechanism to start, accurately conveying the guide rail to the next process. When conveying the guide rail to the linear conveying mechanism, the invention automatically monitors the time and air volume of the two ends of the guide rail moving to the set position, and automatically compensates and adjusts the air volume output within the same time based on the monitoring results. Each push is compensated on the basis of the previous push, ensuring that each time the two ends of the guide rail can move to the set position synchronously or within a set time interval.

Description

Technical Field

[0001] The present invention relates to a control method for guide rail conveying, in particular to an automatic control method for an elevator guide rail conveying device. Background Art

[0002] In the prior art, elevator guide rails often require a conveying device to transport and transfer the guide rails during the processing of automated production lines. In particular, when the guide rails are transported to straightening, turning and other processes, the guide rails are usually moved to a linear conveying mechanism by a conveying device, and then the linear conveying mechanism drives the guide rails to move linearly and transport the guide rails to the straightening and turning processing equipment for straightening, turning and other processing.

[0003] In the prior art, when the guide rail is moved laterally to the linear motion mechanism, the guide rail is usually pushed onto the linear motion mechanism by a cylinder. Due to the long length of the guide rail, at least two cylinders are generally provided to push the guide rail by pushing both sides of the guide rail. However, in actual operation, the following problems exist, which make it difficult for the cylinders on both sides to synchronously push the two ends of the guide rail to the set position. The problems include leakage caused by wear and tear of the cylinders for a long time, sealing of the connecting pipe between the cylinder and the control valve, leakage caused by wear and tear of the control valve due to frequent opening and closing, wear and tear of the opening, and the amount of gas delivered, all of which affect the synchronization of the cylinders on both sides.

[0004] The above problems will make it difficult for both ends of the guide rail to be pushed to the set position within the set time, which will cause the guide rail as a whole to be tilted on the linear motion mechanism. In the automated production process, once the guide rail is tilted on the linear motion mechanism, the controller will directly control the linear motion mechanism to drive the guide rail in the tilted state to be transported forward under the beat of automatic control. However, when the tilted guide rail is moving in a straight line, it is difficult to accurately transport the end of the guide rail to the equipment of the next process, and during the transportation process, the guide rail may fall off the linear motion mechanism or directly collide with the equipment of the next process, causing damage to the equipment and affecting the automated production of the entire production line.

[0005] If a sensor is set up during the automatic production process of the production line to detect whether the guide rail has moved into place, the sensor will detect whether the guide rail has moved into place. If it has not moved into place, the machine will be shut down and wait for the staff to repair or replace it. Although this method can ensure that the guide rail is delivered to the right place every time, it greatly affects the normal operation of the entire production line. The production capacity of the production line is strictly regulated. If the machine is shut down for repair as soon as a fault occurs, it will make it difficult to meet the production capacity standards.

[0006] In the prior art, two sets of conveying equipment, one for backup and one for use, are installed to ensure that the production line does not stop. However, the guide rails are relatively long, and the entire conveying device takes up a large amount of space. Firstly, due to space limitations, it is difficult to install two sets of equipment, one for backup and one for use, and secondly, it is expensive to install two sets of equipment, one for backup and one for use. Therefore, an automatic control method for an elevator guide rail conveying device is proposed. Summary of the Invention

[0007] The purpose of the present invention is to solve the above problems and to provide an automatic control method for an elevator guide rail conveying device.

[0008] In order to achieve the above object, the present invention provides the following technical solution: an automatic control method for an elevator guide rail conveying device, characterized in that the control method is as follows:

[0009] a. After the controller controls the control valve to open, the air source is used to push the ends of the guide rail to move the cylinder on the linear conveying mechanism to start;

[0010] b. The cylinders at both ends of the guide rail push the guide rails to move to the set position, and the controller controls the timing module to perform timing;

[0011] c. Sensors are provided at the set positions for sensing the guide rails at both ends, and the sensors sense whether the guide rails are in place;

[0012] d. The sensors at both ends sense the rails and send signals to the controller. The controller records the signal when it receives the first signal from the sensors at both ends. The controller records the timing value of the timing module as d and controls the timing module to continue timing.

[0013] e. If the controller receives information from the sensors at both ends simultaneously or within a set time interval, it will start the linear conveyor mechanism and accurately transport the guide rail to the next process;

[0014] f. If the controller receives a signal from one of the sensors and does not receive a signal from another sensor after exceeding the set time interval r or after exceeding the set time f;

[0015] g. The controller controls the control valve connected to the cylinder on this side to open the gas supply to the cylinder on this side again, and the gas supply starts while controlling the timing module to time again, and the gas flow is monitored by the flow sensor;

[0016] h. After the sensor senses the rail on this side, it sends a signal to the controller. After receiving the signal, the controller controls the timing module to stop timing while controlling the control valve to close. The measured flow value is set to n.

[0017] i. The controller adds the measured flow value n to the standard output flow rate m when the driving cylinder is in action to obtain the total output flow rate n+m for the next output. Combined with the standard time d when the controller receives the first sensor, it adjusts the opening of the control valve when it is opened next time so that the amount of gas delivered to the cylinder on that side within d reaches n+m. Then, when the driving cylinder is actuated next time, both cylinders can push the guide rail to the set position within d.

[0018] Further preferably, in the above gh process, if the controller still does not receive the signal from the sensor within the set time f, it indicates that a fault has occurred, and the controller controls the entire device to stop working and issues an alarm to inform the staff.

[0019] Further preferably, when a fault occurs, the controller monitors whether the gas volume is output normally to the cylinder on that side through the flow sensor. If it is normal, it is determined that there is a fault in the cylinder or the gas path between the control valve and the cylinder. If the normal gas volume is not output, it is determined that there is a fault in the control valve or the gas source or the gas path between the gas source and the control valve. The controller outputs the cause of the fault to the display screen to prompt the staff so that the staff can find the fault point in time and perform timely maintenance.

[0020] Further preferably, if no signals are received from the two sensors within the set time f during use;

[0021] The controller controls the control valves connected to the two cylinders to open again to supply gas to the two cylinders respectively. When the gas supply starts, the timing module is controlled to start timing again, and the gas flow is monitored by the flow sensor respectively.

[0022] After the two sensors sense the guide rail, they send signals to the controller respectively. After receiving the corresponding signals, the controller controls the timing module to count the value until it receives the signals from the two sensors. Then, the timing stops and the control valve is closed. The measured flow values ​​are set as n1 and n2 respectively.

[0023] The controller adds the measured flow values ​​n1 and n2 to the standard output flow m when the driving cylinder is in action to obtain the total output flow n1+m and n2+m for the next output. In combination with the set time f, the controller adjusts the opening of the two control valves at the next opening according to the set time f and the total output flow n1+m and n2+m, so that the gas volume delivered to the two cylinders respectively reaches n1+m and n2+m within the set time f, so that the cylinders on both sides can push the guide rail to the set position within the set time f when the cylinder is driven to act next time.

[0024] Further preferably, there are at least two cylinders for pushing the guide rail to move.

[0025] Further preferably, there are at least two sensors for sensing whether the guide rail is in a set position.

[0026] Further preferably, the control valve is a program-controlled valve.

[0027] The beneficial effects of the present invention are as follows: through the arrangement of the present invention, the time and gas volume for the two ends of the guide rail to move to the set position are automatically monitored when the guide rail is conveyed to the linear conveying mechanism, and the opening of the control valve is adjusted according to the monitoring result when the other guide rail is pushed to move to the linear conveying mechanism next time, so as to automatically compensate and adjust the gas volume output during the same time. Each push is compensated on the basis of the previous push, ensuring that each time the guide rail is pushed, the two ends of the guide rail can be ensured to move to the set position synchronously or within the set time interval, thereby avoiding the guide rail being in a deflected state when conveyed by the linear conveying mechanism, resulting in the guide rail being unable to be conveyed to the next process, or even causing collision during the conveying process, resulting in damage to the guide rail and equipment, thereby affecting normal production;

[0028] At the same time, through the configuration of the present invention, before a fault that cannot be repaired and compensated by itself occurs, the entire production line does not need to be suspended for maintenance. The production line can continue to produce without affecting production efficiency, and at the same time, it can save maintenance and replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a control flow diagram of the present invention. DETAILED DESCRIPTION

[0030] The following further describes the automatic control method of an elevator guide rail conveying device according to the present invention with reference to the accompanying drawings.

[0031] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] See Figure 1 As shown in , an automatic control method for an elevator guide rail conveying device is characterized in that the control method is as follows: two cylinders are set to push the guide rail to move, namely cylinder 1 and cylinder 2; two sensors are set to detect whether the two ends of the guide rail are in the set position, namely sensor 1 corresponding to cylinder 1 and sensor 2 corresponding to cylinder 2, and the sensors can be infrared sensors;

[0033] First, the guide rail is lifted to the push position by the cylinder through the previous process. The controller controls the control valves connected to cylinder 1 and cylinder 2 to open the set opening, and inputs the set air volume m into cylinder 1 and cylinder 2 within the set time. Cylinder 1 and cylinder 2 are started, pushing the two ends of the guide rail to move it onto the linear conveying mechanism; the linear conveying mechanism can use a linear drive such as a conveyor belt, conveyor roller or cylinder;

[0034] Cylinders 1 and 2 at both ends of the guide rail push the two ends of the guide rail synchronously to move the guide rail to the set position; at the same time, the controller controls the timing module to start timing;

[0035] Sensor 1 and sensor 2 are used to sense whether the two ends of the guide rail are at the set positions;

[0036] After the sensor 1 and the sensor 2 sense the guide rail, they send signals to the controller respectively. When the controller receives the first signal, it records the timing value of the timing module at this time as d, and controls the timing module to continue timing.

[0037] If the controller receives signals from both sensor 1 and sensor 2 simultaneously, or receives a signal from another sensor within a set time interval r after receiving a signal from the first sensor, it indicates that the guide rail has moved to the set position and is in a vertical state; the controller controls the timing module to stop timing and controls the linear conveying mechanism to start, accurately conveying the vertically set guide rail to the next process;

[0038] If the controller receives a signal from one of the sensors and does not receive a signal from another sensor after exceeding the set time interval r or after exceeding the set time f;

[0039] The controller controls the control valve connected to the cylinder on this side to open and supply gas to the cylinder on this side again. When the gas supply starts, the timing module is controlled to start timing again, and the gas flow is monitored by the flow sensor.

[0040] After the sensor on this side senses the guide rail, it sends a signal to the controller. After receiving the signal, the controller controls the timing module to stop timing and controls the control valve to close. The measured flow value is set to n;

[0041] The controller adds the measured flow value n to the standard output flow m when the driving cylinder is in action to obtain the total output flow n+m for the next output. In combination with the standard time d when the controller receives the first sensor, the controller adjusts the opening of the control valve when it is opened next time according to the standard time d and the total output flow n+m so that the amount of gas delivered to the cylinder on this side within the standard time d reaches n+m. Then, when the driving cylinder is in action next time, both cylinders on both sides can push the guide rail to the set position within d.

[0042] When the cylinder is driven again to push the guide rail to move, if the controller still does not receive the signal from the sensor on this side within the set time f, it means a fault has occurred. The controller controls the entire equipment to stop working and issues an alarm to inform the staff;

[0043] The time d for receiving the signal from the first sensor must be less than f. If no signal from sensor 1 or sensor 2 is received within the set time f during use,

[0044] The controller controls the control valves connected to cylinder 1 and cylinder 2 to open again to supply gas to cylinder 1 and cylinder 2. At the same time as the gas supply starts, the timing module is controlled to start timing again, and the gas flow is monitored by the flow sensor respectively.

[0045] After sensor 1 and sensor 2 sense the guide rail, they send signals to the controller respectively. After receiving the corresponding signals, the controller controls the timing module to count the value until it receives the signals from the two sensors. Then, the timing stops and the control valve is closed. The measured flow values ​​are set as n1 and n2 respectively.

[0046] The controller adds the measured flow values ​​n1 and n2 to the standard output flow m when the driving cylinder is in action to obtain the total output flow n1+m and n2+m of the next output. In combination with the set time f, the controller adjusts the opening of the two control valves at the next opening according to the set time f and the total output flow n1+m and n2+m so that the gas volume delivered to the two cylinders reaches n1+m and n2+m respectively within the set time f. Then, when the driving cylinder is actuated next time, both cylinders can push the guide rail to the set position within the set time f.

[0047] If the guide rail is pushed to move again and still no signal is received from one or both of sensor 1 and sensor 2 within the set time f, it indicates a fault, and the controller controls the entire device to stop working and issues an alarm to inform the staff;

[0048] When a fault occurs, the controller monitors whether the gas is output to the cylinder normally through the flow sensor. If it is normal, it is determined that the cylinder or the gas path between the control valve and the cylinder is faulty. If normal gas is not output, it is determined that the control valve or the gas source or the gas path between the gas source and the control valve is faulty. The controller outputs the cause of the fault to the display screen to prompt the staff so that the staff can find the fault point in time and perform timely maintenance;

[0049] Through the arrangement of the present invention, the time and gas volume for the two ends of the guide rail to move to the set position are automatically monitored when the guide rail is conveyed to the linear conveying mechanism, and the opening of the control valve is adjusted according to the monitoring result when the other guide rail is pushed to move to the linear conveying mechanism next time, so as to automatically compensate and adjust the gas volume output during the same time. Each push is compensated on the basis of the previous push, ensuring that each time the guide rail is pushed, the two ends of the guide rail can be ensured to move to the set position synchronously or within the set time interval, thereby avoiding the guide rail being in a deflected state when conveyed by the linear conveying mechanism, resulting in the guide rail being unable to be conveyed to the next process, or even causing collision during the conveying process, resulting in damage to the guide rail and equipment, thereby affecting normal production;

[0050] And through monitoring, when a fault occurs, the machine can be shut down in time to inform the staff of the cause of the fault, so that the staff can promptly identify the fault point and carry out repairs and maintenance.

[0051] The protection scope of the present invention is not limited to the above embodiment and its variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment fall within the protection scope of the present invention.

Claims

1. An automatic control method for an elevator guide rail conveying device, characterized in that The control method is as follows: a. After the controller opens the control valve, it supplies air through the air source to push the two ends of the guide rail and move it to the cylinder on the linear conveying mechanism to start; b. The cylinders at both ends of the guide rail push the two ends of the guide rail to move the guide rail to the set position, and the controller controls the timing module to time; c. Sensors are provided at the set positions for sensing the two ends of the guide rail, and the sensors are used to sense whether the guide rail is in place; d. After the sensors at both ends sense the guide rail, they send signals to the controller. The controller records the first signal sent by the sensors at both ends. The controller records the timing value of the timing module at this time as d and controls the timing module to continue timing. e. If the controller receives information from the sensors at both ends simultaneously or within the set time interval r, the controller controls the linear conveyor mechanism to start and accurately transport the guide rail to the next process; f. If the controller receives a signal from one of the sensors but does not receive a signal from another sensor after exceeding the set time interval r or after exceeding the set time f; g. The controller controls the control valve connected to the cylinder on this side to open the gas supply to the cylinder on this side again to replenish the gas. At the same time as the gas supply starts, the timing module is controlled again to time the gas flow, and the gas flow is monitored by the flow sensor; h. After the sensor on this side senses the guide rail, it sends a signal to the controller. After receiving the signal, the controller controls the timing module to stop timing and controls the control valve to close. The measured flow value is set to n; i. The controller adds the measured flow value n to the standard output flow m when the driving cylinder is in action to obtain the total output flow n+m for the next output. Combined with the standard time d when the controller receives the first sensor, it adjusts the opening of the control valve when it is opened next time so that the amount of gas delivered to the cylinder on that side within d reaches n+m. Then, when the driving cylinder is actuated next time, both cylinders on both sides can push the guide rail to the set position within d.

2. The automatic control method of an elevator guide rail conveying device according to claim 1, characterized in that: In the above process, if the controller still does not receive the signal from the sensor within the set time f, it means that a fault has occurred. The controller controls the entire equipment to stop working and issues an alarm to inform the staff.

3. The automatic control method of an elevator guide rail conveying device according to claim 2, characterized in that: When a fault occurs, the controller monitors whether the gas output to the cylinder on that side is normal through the flow sensor. If it is normal, it is determined that there is a fault in the cylinder or the gas circuit between the control valve and the cylinder. If the normal gas volume is not output, it is determined that there is a fault in the control valve or the gas source or the gas circuit between the gas source and the control valve. The controller outputs the cause of the fault to the display screen to prompt the staff so that the staff can find the fault point in time and perform timely maintenance.

4. The automatic control method of an elevator guide rail conveying device according to claim 1, characterized in that: If no signal is received from the two sensors within the set time f during use; The controller controls the control valves connected to the two cylinders to open again to supply gas to the two cylinders respectively. When the gas supply starts, the timing module is controlled to start timing again, and the gas flow is monitored by the flow sensor respectively. After the two sensors sense the guide rail, they send signals to the controller respectively. After receiving the corresponding signals, the controller controls the timing module to count the value until it receives the signals from the two sensors. Then, the timing stops and the control valve is closed. The measured flow values ​​are set as n1 and n2 respectively. The controller adds the measured flow values ​​n1 and n2 to the standard output flow m when the driving cylinder is in action to obtain the total output flow n1+m and n2+m for the next output. In combination with the set time f, the controller adjusts the opening of the two control valves at the next opening according to the set time f and the total output flow n1+m and n2+m, so that the gas volume delivered to the two cylinders respectively reaches n1+m and n2+m within the set time f, so that the cylinders on both sides can push the guide rail to the set position within the set time f when the cylinder is driven to act next time.

5. The automatic control method for an elevator guide rail conveying device according to any one of claims 1 to 4, characterized in that: There are at least two cylinders for pushing the guide rail to move.

6. The automatic control method for an elevator guide rail conveying device according to any one of claims 1 to 4, characterized in that: There are at least two sensors for sensing whether the guide rail is in a set position.

7. The automatic control method for an elevator guide rail conveying device according to any one of claims 1 to 4, characterized in that: The control valve adopts a program-controlled valve.

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