CN219136886U - Automatic strip steel fold detecting and opening and closing system for air knife - Google Patents
Automatic strip steel fold detecting and opening and closing system for air knife Download PDFInfo
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- CN219136886U CN219136886U CN202223458947.6U CN202223458947U CN219136886U CN 219136886 U CN219136886 U CN 219136886U CN 202223458947 U CN202223458947 U CN 202223458947U CN 219136886 U CN219136886 U CN 219136886U
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- air knife
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Abstract
The utility model relates to an automatic strip steel fold detection and opening and closing system for an air knife, which comprises a linear sensor, a stepping motor, an automatic opening device and an air knife PLC (programmable logic controller); the linear sensor device is arranged on a turning plate in the furnace nose; the stepping motor and sensor are provided with a feedback assembly device; the automatic opening device is arranged on the base of the air knife; the automatic opening device of the air knife is controlled by the PLC of the air knife. The device can effectively reduce the workload of operators and also avoid the breakage of the strip steel and the damage of the air knife caused by the fatigue negligence of the operators.
Description
Technical Field
The utility model relates to the technical field of automatic control, in particular to an automatic strip steel fold detection and opening and closing system for an air knife.
Background
The furnace nose is a channel connecting the furnace and the zinc pot, and the strip steel enters the zinc pot through the furnace nose. The air knife device is arranged above the zinc pot and is an important device for controlling the zinc layer of the strip steel by the continuous hot galvanizing line. During normal production, the air knife blows high-pressure air flow to the surface of the strip steel, and redundant zinc liquid is scraped like a blade. Therefore, the quality of the air knife has direct influence on the surface quality of the strip steel and the cost control, and is important precision equipment. Because the distance between the air knife and the surface of the strip steel is only about 7mm, when the strip steel is wrinkled, an operator needs to manually adjust the distance of the air knife in advance under normal conditions, so that the strip steel is prevented from being scraped off, and the air knife is prevented from being scratched. However, due to manual opening and closing, operators need to pay attention to the state of the steel strip in real time, the requirements on the working state of workers are high, errors are easily caused by mental fatigue, the distance between the air knives is not adjusted manually in time, the steel strip is scraped off, and the air knives are damaged.
Disclosure of Invention
The utility model provides an automatic strip steel fold detection and opening and closing system for an air knife, which can effectively reduce the workload of operators and avoid strip steel breakage and air knife damage caused by fatigue negligence of the operators.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
an automatic strip steel fold detection and opening system for an air knife comprises a linear sensor, a stepping motor, an automatic opening device and an air knife PLC; the linear sensor device is arranged on a turning plate in the furnace nose; the stepping motor and sensor are provided with a feedback assembly device; the automatic opening device is arranged on the base of the air knife; the automatic opening device of the air knife is controlled by the PLC of the air knife.
The number of the linear sensors is two, and the number of the stepping motors is two, so that two feedback assembly devices are formed;
the automatic opening device consists of a motor, a speed reducer, a rack, a transmission shaft and an encoder.
The utility model has the following beneficial effects:
the utility model can avoid the production line fault, reduce the original workload of operators and improve the production efficiency; the phenomenon that the strip steel folds are scraped to the air knife due to the fact that the air knife is not opened in time due to fatigue or negligence of operators can be avoided; through automatic control, the time for opening the air knife can be accurately controlled according to the length of the folds, and the rejection rate and the cost are reduced.
Drawings
FIG. 1 is a schematic view of the internal flap structure of the furnace nose of the present utility model;
FIG. 2 is a schematic view of the structure of the automatic opening device of the present utility model;
FIG. 3 is a schematic diagram of the air knife PLC program of the present utility model;
fig. 4 is a schematic view of the air knife PLC program of the present utility model.
In the figure: 1. the linear sensor-stepper motor assembly device 2, the turning plate 3, the motor-speed reducer unit 4, the encoder 5, the rack 6, the base 7 and the transmission shaft.
Detailed Description
The utility model is described in detail below with reference to the drawings of the specification, but the scope of protection of the utility model is not limited to the embodiments described.
As shown in fig. 1-4, the automatic strip steel fold detecting and opening system for the air knife comprises a linear sensor, a stepping motor, an automatic opening device and an air knife PLC; the linear sensor device is arranged on the turning plate 2 inside the furnace nose; the stepping motor and sensor feedback assembly device 1; the automatic opening device is arranged on the base 6 of the air knife; the automatic opening device of the air knife is controlled by the PLC of the air knife.
The number of the linear sensors is two, and the number of the stepping motors is two, so that two feedback assembly devices are formed. The two sets of feedback devices are more reliable, prevent misoperation, and can restore normal production by shielding one in the process if one fails, thereby reducing downtime and having the functions of one work and one standby.
The automatic opening device consists of a motor speed reducer unit 3, an encoder 4, a rack 5 and a transmission shaft 7.
The specific use process of the utility model is as follows:
the existing furnace nose internal turning plate 2 can be provided with an elastic linear sensor by utilizing the line stopping maintenance time, an assembly device 1 for feeding back the turning plate position is formed by the elastic linear sensor and a stepping motor, an operator can set the position value of the turning plate 2, at the moment, the stepping motor drives the turning plate 2 to adjust according to a set value, and during normal production, the turning plate 2 stops adjusting and keeps at the position when the feedback value of the linear sensor is consistent with the set value.
When the strip steel folds pass through the furnace nose, the inner turning plate 2 is touched to generate a variable quantity on the basis of the original set value, the linear sensor can send the variable quantity to the air knife PLC, operation is carried out in the air knife PLC program, and when the variable quantity is larger than the set value, it is judged that an air knife opening command is sent to the opening device, and the automatic opening device starts to work. At the moment, the air knife can be automatically opened, and meanwhile, the air knife PLC can automatically control the opening and closing distance of the air knife according to the detected value of the sensor change of the turning plate 2. When the wrinkles disappear, the turning plate 2 can return to the initial position, the sensor can return to the initial value, the PLC program calculates time according to the production line speed and the distance between the turning plate 2 and the air knife, and then the air knife is automatically closed.
When the production line is running, the range of the changed interval can be optimized and changed in the program according to the actual size of the generated wrinkles. And calculating the opening time of the air knife according to the distance from the turning plate 2 to the air knife and the production line speed, checking the accuracy of the opening time of the air knife in actual production, and optimizing the opening time of the air knife.
The above embodiments are not intended to limit the scope of the present utility model, but rather, various modifications and decorations can be made by those skilled in the art using the principles and technical features of the present utility model, which are included in the scope of protection defined in the claims.
Claims (3)
1. An air knife automated inspection belted steel fold system that opens and shuts which characterized in that: comprises a linear sensor, a stepping motor, an automatic opening device and an air knife PLC; the linear sensor device is arranged on a turning plate in the furnace nose; the stepping motor and sensor are provided with a feedback assembly device; the automatic opening device is arranged on the base of the air knife; the automatic opening device of the air knife is controlled by the PLC of the air knife.
2. The automatic strip steel fold detecting and opening and closing system for air knives according to claim 1, wherein: the number of the linear sensors is two, and the number of the stepping motors is two, so that two feedback assembly devices are formed.
3. The automatic strip steel fold detecting and opening and closing system for air knives according to claim 1, wherein: the automatic opening device consists of a motor, a speed reducer, a rack, a transmission shaft and an encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223458947.6U CN219136886U (en) | 2022-12-23 | 2022-12-23 | Automatic strip steel fold detecting and opening and closing system for air knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223458947.6U CN219136886U (en) | 2022-12-23 | 2022-12-23 | Automatic strip steel fold detecting and opening and closing system for air knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219136886U true CN219136886U (en) | 2023-06-06 |
Family
ID=86601008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223458947.6U Active CN219136886U (en) | 2022-12-23 | 2022-12-23 | Automatic strip steel fold detecting and opening and closing system for air knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219136886U (en) |
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2022
- 2022-12-23 CN CN202223458947.6U patent/CN219136886U/en active Active
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