Glass information queue fidelity method and glass production line

Abstract

The invention relates to the technical field of glass production, and discloses a glass information queue fidelity method and a glass production line, and the glass information queue fidelity method comprises the following steps: when an induction module detects that glass exists on a conveying line in an induction area of the induction module, whether the glass exists at the position in a glass information queue is compared; if yes, when the front edge position parameter of the glass in the glass information queue is inconsistent with the parameter detected by the sensing module, the front edge position parameter of the glass in the glass information queue is corrected to be the glass position detected by the sensing module; if not, a group of glass information is added into the glass information queue, and the position parameters of the glass are determined according to the glass position parameters detected by the sensing module; and eliminating the group of glass information in the glass information queue when the glass front edge in the glass information queue is in the effective detection interval of the sensing module but the sensing module does not detect the glass.

Description

Technical Field

[0001] The invention relates to the technical field of glass production, and in particular to a glass information queue fidelity method and a glass production line. Background Art

[0002] The cold end line control system of the glass production line generates a glass information queue at the cross-bending point. The glass information includes information such as the front position, existence, plate length, plate width and grade of the glass. The roller speed and distance control are used to track the glass information queue. For example, the company's prior patent CN201110187630.0 discloses a method for tracking the glass information queue. Its core technical solution is to convert the tracking of the glass position into the accumulation of the distance the glass moves forward on the roller starting from the cross-bending roller. Because of its concept of "controlling the roller means controlling the glass", its focus is on the glass carrier roller, and further on the motor that drives the roller. The preferred roller motor solution is a servo motor or a synchronous frequency conversion motor. The main purpose is to ensure accurate speed control and eliminate roller tracking errors. Generally, this is an accurate, stable and reliable tracking solution.

[0003] However, when the above method is used to track the glass information queue, the glass information may be distorted. The main reasons are:

[0004] 1. When the stacker returns the glass to the roller table, the returned glass is not in the glass information queue and the system will not track it;

[0005] 2. When the roller table fails and is being repaired, the motor stops running and the system thinks that the glass is not moving. The subsequent glass will be forced to stop moving until it is forced to fall, causing losses.

[0006] 3. When the drop plate roller fails to rise and fall, the glass that does not need to fall falls or the glass that should fall does not fall, and the system will track the error;

[0007] 4. The relationship between the motor rotation and the glass advance is: the motor shaft drives the gear shaft through the reduction box with a belt, the gear shaft drives the rubber roller to rotate with a gear, and the rubber ring on the rubber roller drives the glass forward with friction. The belt is elastic, there is a gap between the gears, the rubber ring will wear, and some motors use asynchronous variable frequency motors that are not the optimal motor solution. These factors will cause tracking errors.

[0008] Distorted glass information will have an adverse effect on subsequent steps of glass production and will be detrimental to the smooth progress of glass production. In view of the above problems, this application is proposed. Summary of the invention

[0009] The purpose of the present invention is to provide a glass information queue authenticity method and a glass production line, which are used to overcome the problem that traditional glass information queue tracking methods are prone to distortion and ensure the smooth progress of glass production.

[0010] The present invention is achieved through the following technical solutions.

[0011] A glass information queue fidelity method of the present invention comprises the following steps:

[0012] Detection steps: set up a sensing module and use the sensing module to detect the glass on the conveyor line;

[0013] Correction steps: When the sensing module detects the presence of glass on the conveyor line in its sensing area, it compares whether there is glass at this position in the glass information queue;

[0014] If yes, when the front position parameters of the glass in the glass information queue are inconsistent with the parameters detected by the sensing module, the front position parameters of the glass in the glass information queue are corrected to the glass position detected by the sensing module;

[0015] If not, a set of glass information is added to the glass information queue, and the position parameters of the glass are determined according to the glass position parameters detected by the sensing module;

[0016] When there is a glass front in the glass information queue within the effective detection interval of the sensing module, but the sensing module does not detect the glass, the group of glass information is deleted from the glass information queue.

[0017] The conveyor line is generally a roller conveyor line, but is not limited to a roller conveyor line.

[0018] Furthermore, when the sensing module detects that the advancing distance of the glass is greater than the set value X, X>0, X is generally set to 200mm or other values, it is determined that real glass has passed through the sensing range of this sensing module, and then compared with the glass information queue to avoid the problem of adding too much glass due to malfunction of the sensing module caused by interference or other reasons.

[0019] Furthermore, in the correction step, if there is corresponding glass in the glass information queue, the leading edge position parameters of the glass in the glass information queue are corrected to the glass position detected by the sensing module.

[0020] Furthermore, the leading edge position parameter of the glass in the glass information queue is corrected to the fixed position of the sensing module plus X.

[0021] Furthermore, the correction deviation value of the leading edge position parameter of the glass in the glass information queue is calculated to intuitively display the tracking error of the glass position at the correction moment.

[0022] Furthermore, in the correction step, a set of glass information is added to the glass information queue when the glass leaves the detection area of ​​the sensing module, and the length of the glass plate is calculated based on the duration of the glass in the detection range of the sensing module combined with the conveyor line speed.

[0023] Furthermore, in the position parameters of the glass, the rear edge position of the glass is the fixed position of the sensing module, and the front edge position of the glass is the fixed position of the sensing module plus the length of the glass plate, thereby ensuring the accuracy of the glass position parameters.

[0024] Furthermore, the sensing module adopts a photoelectric switch, and may also adopt a detection module such as an image sensor that can detect the position of the glass. Among them, the use of a photoelectric switch is a preferred solution with low cost and easy maintenance.

[0025] Furthermore, the detection step and the correction step are performed in several conveying steps in the glass production process, and are generally arranged on the upstream roller conveyor where precise positioning is required, and can be arranged arbitrarily in a suitable area.

[0026] Furthermore, the detection steps and correction steps can be executed at the upstream conveyor line for edge bending, the upstream conveyor line for dropping plates, the downstream conveyor line for dropping plates, and the upstream conveyor line for stacking machines, and whether to execute them can be set in the program.

[0027] A glass production line adopts the glass information queue fidelity method to track the glass information queue.

[0028] The beneficial effects of the present invention are as follows: by setting up a sensing module, the sensing module can use a photoelectric switch or other modules that can detect whether glass exists, detect whether glass exists and the position of glass on the conveyor roller, and update the glass information queue according to the detection result to ensure that the glass position information and glass existence information in the glass information queue are consistent with the actual situation, solve the problem of glass information distortion caused by stacker returns, roller fault maintenance, motor transmission errors, etc., and ensure smooth production. DETAILED DESCRIPTION

[0029] A glass information queue authenticity method of the present invention sets photoelectric switches at the upstream rollers of edge breaking, the upstream rollers of plate dropping, the downstream rollers of plate dropping, the upstream rollers of stacking machines, etc. The fixed position of the photoelectric switches from the transverse breaking rollers is set in the program to solve the problem of inconsistency between the actual quantity and position of the glass on the rollers and the glass information queue in the system.

[0030] Set the detection window of the photoelectric switch in the program. For example, if the fixed position of the photoelectric switch is 100000mm and the detection window length of the photoelectric switch is set to 1000mm, the effective range of the photoelectric switch detection is 99500~100500mm.

[0031] When the photoelectric switch continuously outputs signals, the program starts to accumulate the distance the glass has advanced at the current roller speed. When the distance is greater than 200mm, the program considers that real glass has passed under this photoelectric switch.

[0032] The program compares the glass information queue to see if the glass front position is within the effective detection range of this photoelectric switch:

[0033] If yes, the leading edge position parameter of the glass in the glass information queue is corrected to the fixed position of the photoelectric switch + 200mm, and the correction deviation value of the leading edge position parameter of the glass in the glass information queue is calculated to intuitively display the tracking error of the glass position at the correction time;

[0034] If not, a group of glass information will be added to the glass information queue when the photoelectric switch signal disappears. The length of the glass plate is calculated based on the duration of the photoelectric switch signal and the roller speed. The rear edge position of the glass is the fixed position of the photoelectric switch, and the front edge position of the glass is the fixed position of the photoelectric switch + the length of the glass plate.

[0035] When there is a glass front edge in the glass information queue within the effective detection range of the photoelectric switch, but the photoelectric switch has no signal output, the group of glass information is eliminated from the glass information queue.

[0036] The sensing module in this solution, that is, the photoelectric switch, can be understood as detecting the glass queue composed of multiple groups of glass, whether to eliminate or generate unknown glass, and adding, eliminating and correcting the glass front position parameters of the glass information queue through the program, so that the number of glasses and the position of the glass in the glass information queue are consistent with the actual roller, which effectively solves the following problems: 1. The system will not track when the stacker returns the glass to the roller. 2. When the drop plate roller fails to rise and fall, the system will track the error. 3. The problem of tracking error caused by the deviation between the actual speed of the roller and the speed calculated in the program. 4. When the roller fails, just set the virtual operation signal of the roller in the program, and then manually turn the roller to allow the glass to continue to move forward. At this time, the glass information queue in the program is inconsistent with the actual one. Automatic tracking can be restored through fidelity processing of the glass information queue.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass information queue fidelity method, characterized in that: The following steps are involved: Detection steps: set up a sensing module and use the sensing module to detect the glass on the conveyor line; Correction steps: When the sensing module detects the presence of glass on the conveyor line in its sensing area, compare whether there is glass at this position in the glass information queue; If yes, when the front position parameters of the glass in the glass information queue are inconsistent with the parameters detected by the sensing module, the front position parameters of the glass in the glass information queue are corrected to the glass position parameters detected by the sensing module; If not, a set of glass information is added to the glass information queue, and the position parameters of the glass are determined according to the glass position parameters detected by the sensing module; When there is glass in the glass information queue within the effective detection interval of the sensing module, but the sensing module does not detect the glass, the group of glass information is deleted from the glass information queue.

2. The glass information queue fidelity method according to claim 1, characterized in that: When the sensing module detects that the advancing distance of the glass is greater than the set value X, X>0, it is determined that real glass has passed through the sensing range of this sensing module.

3. The glass information queue fidelity method according to claim 2, characterized in that: In the correction step, if there is corresponding glass in the glass information queue, the leading edge position parameters of the glass in the glass information queue are corrected to the glass position detected by the sensing module.

4. The glass information queue fidelity method according to claim 2 or 3, characterized in that: Correct the leading edge position parameter of the glass in the glass information queue to the fixed position of the sensing module plus X.

5. The glass information queue fidelity method according to any one of claims 1 to 3, characterized in that: In the correction step, a set of glass information is added to the glass information queue when the glass leaves the detection area of ​​the sensing module. The length of the glass plate is calculated based on the duration of the glass in the detection range of the sensing module combined with the conveyor line speed.

6. The glass information queue fidelity method according to claim 5, characterized in that: In the position parameters of the glass, the rear edge position of the glass is the fixed position of the sensing module, and the front edge position of the glass is the fixed position of the sensing module plus the length of the glass plate.

7. The glass information queue fidelity method according to any one of claims 1 to 3 and 6, characterized in that: The sensing module adopts photoelectric switch.

8. The glass information queue fidelity method according to any one of claims 1 to 3 and 6, characterized in that: Inspection steps and correction steps are performed at several conveying steps in the glass production process.

9. The glass information queue fidelity method according to claim 8, characterized in that: The detection steps and correction steps can be performed at the upstream conveyor line for edge bending, the upstream conveyor line for plate dropping, the downstream conveyor line for plate dropping, and the upstream conveyor line for stacking crane.

10. A glass production line, characterized in that: The glass production line adopts the glass information queue fidelity method described in any one of claims 1 to 9 to track the glass information queue.