CN211588015U - Strip steel detection device of outlet steering pinch roll - Google Patents
Strip steel detection device of outlet steering pinch roll Download PDFInfo
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- CN211588015U CN211588015U CN201922094360.3U CN201922094360U CN211588015U CN 211588015 U CN211588015 U CN 211588015U CN 201922094360 U CN201922094360 U CN 201922094360U CN 211588015 U CN211588015 U CN 211588015U
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Abstract
The utility model discloses a strip steel detection device of an outlet steering pinch roll, which comprises a photoelectric switch, a purging pipeline, an electromagnetic valve and a switch component, wherein the photoelectric switch is electrically connected with a controller of the outlet steering pinch roll, the photoelectric switch comprises a first detection component and a second detection component, and the first detection component and the second detection component are respectively arranged above and below the strip steel; the air outlet of the purging pipeline is aligned to the second detection component, the electromagnetic valve is installed on the purging pipeline, and the switch assembly and the controller are both electrically connected with the electromagnetic valve. This application detects belted steel through setting up photoelectric switch to set up and sweep the pipeline intermittent type nature and sweep the dust on the second detection component that is located the belted steel below, avoid causing the detected signal to lose because of the powder. And the compressed air purging process can not influence the transmission of light detected by the photoelectric switch, so that the operation time of outlet conversion is ensured, and the stable operation capacity of the unit is improved.
Description
Technical Field
The application belongs to the technical field of strip steel processing equipment, and particularly relates to a strip steel detection device with an outlet turning pinch roll.
Background
The oriented silicon steel decarburization annealing unit needs to perform magnesium oxide coating operation according to process requirements, but the magnesium oxide coating on the surface of the strip steel is easy to slightly fall off in the process of passing through the outlet section roller set after being dried, and the fallen magnesium oxide powder is scattered in the air, so that more magnesium oxide dust is generated in the outlet section area, and the operation environment is severe.
The strip steel outlet section is mainly used for positioning, cutting and coiling strip steel, a strip steel detection device is arranged at the outlet turning pinch roll and used for detecting whether the strip steel passes through at the current moment, and the controller controls the action of the coiling machine according to the detection signal. The strip steel detection device generally adopts an inductive proximity switch or a photoelectric switch, and due to more dust on an operation site and severe environment, detection signals are easily lost, the sequence problems such as normal coil unloading of an outlet section are influenced, the speed reduction or shutdown fault of a process section is caused, and a large amount of manpower waste is caused.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a belted steel detection device of exit steering pinch roll adopts photoelectric switch to detect belted steel signal to the setting sweeps the pipeline and sweeps the magnesium oxide powder, avoids causing the detected signal to lose because of the magnesium oxide powder.
Realize the utility model discloses the technical scheme that the purpose adopted does, a export belted steel detection device who turns to pinch roll, include photoelectric switch, sweep pipeline, solenoid valve and switch module, wherein:
the photoelectric switch is electrically connected with the controller of the outlet turning pinch roll, the photoelectric switch comprises a first detection component and a second detection component, and the first detection component and the second detection component are respectively arranged above and below the strip steel;
the air outlet of the purging pipeline is aligned to the second detection component, the electromagnetic valve is installed on the purging pipeline, and the switch assembly and the controller are both electrically connected with the electromagnetic valve.
Preferably, the optoelectronic switch is a mirror-reflective optoelectronic switch comprising an infrared transceiver as the first detecting means and a mirror as the second detecting means.
Preferably, the reflector is obliquely installed, and an included angle between a plane where the reflector is located and a horizontal plane is 30-60 degrees.
Preferably, the included angle between the axis of the air outlet of the purging pipeline and the plane of the reflector is 20-30 degrees.
Preferably, the pipe diameter of the purging pipeline is 3 mm-10 mm.
Preferably, the distance between the air outlet of the purging pipeline and the reflector is 3 cm-10 cm.
Preferably, the switch assembly is an operation button.
Preferably, the switch assembly is a timing switch.
Preferably, the purging pipeline is installed on a steel structure of the outlet turning pinch roll.
Preferably, the controller is a PLC system with a built-in timer.
According to the above technical scheme, the utility model provides a belted steel detection device of exit steering pinch roll adopts photoelectric switch to detect belted steel signal, and photoelectric switch's first detection component and second detect the component and set up respectively in the top and the below of belted steel, adopt this arrangement structure's photoelectric switch, compare in its detection accuracy degree of induction type proximity switch higher. This application sets up and sweeps the pipeline and sweep magnesium oxide powder, avoids causing the detected signal to lose because of the powder. The blowing pipeline is controlled to be switched on and off by the electromagnetic valve, the electromagnetic valve is electrically connected with the switch assembly and the controller of the outlet steering pinch roll, the electromagnetic valve is controlled to be switched on and off automatically by the controller of the outlet steering pinch roll under normal conditions, the opening time sequence and the opening duration of the electromagnetic valve can be controlled by combining the production time sequence, the electromagnetic valve is opened in two main dust-generating processes of threading and tail flicking, and a good blowing effect is achieved. When the automatic purging does not completely purge dust on the second detection component below the strip steel, the electromagnetic valve can be manually opened through the switch assembly, and compressed air supplementary purging is realized.
This application detects belted steel through setting up photoelectric switch to set up and sweep the pipeline intermittent type nature and sweep the dust on the second detection component that is located the belted steel below, avoid causing the detected signal to lose because of the powder. And the compressed air purging process can not influence the transmission of light detected by the photoelectric switch, so that the operation time of outlet conversion is ensured, and the stable operation capacity of the unit is improved.
Drawings
FIG. 1 is a schematic structural view of a strip steel detection device of an outlet turning pinch roll in the embodiment of the utility model;
FIG. 2 is a view showing a structure of an installation position between a second sensing member and a strip steel in FIG. 1;
FIG. 3 is a schematic structural view of a strip steel magnesium oxide coating line;
description of reference numerals: 1-a photoelectric switch, 1 a-a first detecting member, 1 b-a second detecting member; 2-purging pipeline, 21-air outlet; 3-an electromagnetic valve; 4-a controller; 5-a switch assembly; 6-strip steel; 7-outlet turning pinch roll, 71-lower roll and 72-upper roll; 8-magnesium oxide coating machine; 9-drying in a furnace; 10-a cooling device; 11-a shearing device; 12-coiling machine.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In the embodiment of the utility model, a belted steel detection device of export steering pinch roll is applied to belted steel magnesium oxide coating operation line. Referring to fig. 1, the strip steel detection device comprises a photoelectric switch 1, a purge line 2, an electromagnetic valve 3 and a switch assembly 5, and each assembly is described in detail below:
the photoelectric switch 1 is electrically connected with a controller 4 of the outlet turning pinch roll and used for transmitting a detection signal to the controller 4, and the controller 4 is a controller of the whole strip steel magnesium oxide coating production line and controls all units on the production line to work according to a set time sequence. The photoelectric switch 1 comprises a first detection component 1a and a second detection component 1b, the first detection component 1a and the second detection component 1b are respectively arranged above and below the strip steel 6, when the strip steel passes through, transmission of detection light is blocked, a detection signal is lost, and at the moment, the controller judges that the strip steel passes through the outlet turning pinch roll.
In the present embodiment, the photoelectric switch 1 is a mirror-reflection type photoelectric switch 1 including an infrared transceiver 1a as a first detecting member and a reflecting mirror 1b as a second detecting member. In consideration of the characteristic of large dust in the field environment, in the embodiment, the reflecting mirror 1b is obliquely installed, so that excessive dust is not easily accumulated on the reflecting mirror due to the oblique installation, and compressed air required for purging is reduced. Referring to fig. 2, an included angle α between a plane where the reflector 1b is located and a horizontal plane is 30 ° to 60 °, preferably 45 °, and accordingly, the detection light of the infrared transceiver 1a is also transmitted obliquely, so that it is ensured that the detection light is perpendicular to the reflector 1 b.
The inlet of the purging line 2 is connected to a compressed air source, and the air outlet 21 is aligned with the second detecting member 1 b. In the embodiment, the purging pipeline 2 is a copper pipe with the inner pipe diameter of 3-10 mm, the pipe diameter is preferably 5mm, only small-flow airflow is needed, one end of the copper pipe is fixed on the compressed air valve table through a buckle, the other end of the copper pipe is an air outlet 21, the distance between the air outlet 21 and the reflector is 3-10 cm, and the specific distance is adjusted according to actual conditions on site. The air outlet 21 can be properly bent according to the field condition, and the air nozzle can be flat, so that the blowing surface is larger, and the air flow is more uniform and stable. The copper pipe is fixed on a steel structure adjacent to the photoelectric switch 1 by adopting a buckle, a pipe hoop or a binding belt, and is bent adaptively according to the position relation among the on-site valve table, the steel structure and the photoelectric sensor.
In order to achieve the expected purging effect and avoid the influence of the purged magnesium oxide dust on the lower surface of the strip steel to the maximum extent, in this embodiment, an included angle β between the axis of the air outlet 21 of the purging pipeline 2 and the plane where the reflector is located is 20 ° to 30 °, preferably 25 °. Referring to fig. 2, the air outlet 21 is located above the reflector, and the air outlet blows air to the reflector 1b from top to bottom at an air outlet angle with an included angle β of 25 °, and the blown dust blows off the reflector 1b at an included angle (relative to the reflector) of 0-25 °. Through simple angle conversion, blown dust downwards leaves the reflector 1b at an included angle (relative to a horizontal plane) of 20-45 degrees, so that dust-containing airflow cannot contact the lower surface of the strip steel 6, and blown magnesium oxide dust can be basically prevented from being adhered to the strip steel again by reasonably adjusting the vertical distance between the reflector 1b and the air outlet 21 and the lower surface of the strip steel 6.
The electromagnetic valve 3 is installed on the purging pipeline 2 and used for controlling the on-off of the purging pipeline 2. The switch component 5 and the controller 4 are both electrically connected with the solenoid valve 3. Under the normal condition, the controller 4 controls the electromagnetic valve to be automatically switched on and off, and when the dust on the second detection component below the strip steel is not completely blown by automatic blowing, the electromagnetic valve can be manually opened through the switch component 5, so that the compressed air is supplemented and blown.
In this embodiment, the controller 4 controls the opening timing and the opening duration of the electromagnetic valve by combining the production timing, and opens the electromagnetic valve in two main dust-generating processes of threading and drifting, so as to achieve a better purging effect. In other embodiments, the controller 4 may also be a PLC system with a built-in timer, and when the set time is reached, the timer sends a signal to the PLC system, and the PLC system controls the electromagnetic valve 3 to be electrically opened, so that the purging pipeline 2 is conducted to perform compressed air purging.
In this embodiment, switch module 5 is operating button, and field work personnel press operating button, then solenoid valve 3 gets the electricity and opens, and purge pipeline 2 switches on, carries out compressed air and sweeps. In other embodiments, the switch assembly 5 can also adopt a timing switch, and after the set time is reached, the electromagnetic valve 3 is powered on and opened, the purging pipeline 2 is conducted, and compressed air purging is performed.
Application example:
referring to fig. 3, the steel strip magnesium oxide coating line for steel strip in a certain steel mill is provided with the strip steel detection device of the outlet turning pinch roll of the embodiment, and mainly comprises a magnesium oxide coating machine 8, a drying furnace 9, a cooling device 10, a shearing device 11 and a coiling machine 12 which are arranged in sequence along the production process of the steel strip, and the outlet turning pinch roll 7 is arranged between the shearing device 11 and the coiling machine 12 and comprises a lower roll 71 and an upper roll 72. The units are controlled by the same PLC controller, and the operation time sequences are carried out in sequence according to the internal program of the PLC controller.
After the oriented silicon steel is annealed by a decarburization annealing unit, magnesium oxide coating operation is carried out, after the magnesium oxide coating on the surface of the strip steel 6 is dried, the strip steel is cooled to coiling temperature through a cooling device 10, after a seam attached to the strip steel 6 is positioned to an outlet section, an upper roller 72 of an outlet steering pinch roller 7 is pressed down, the outlet section automatically unloads tension, and the strip steel is cut by a shearing device 11, and at the moment, the outlet steering pinch roller 7 assists in finishing the tail positioning work of the strip of the previous strip steel coil (after the tail positioning work is finished, the outlet steering pinch roller 7 stops working, and the upper roller 72 is opened). And after the coil car finishes coil discharging, the upper roller 72 of the outlet steering pinch roller 7 is pressed down again during the process that the strip head of the next coil of steel is threaded, the coiling operation of the strip head is started to be assisted, the outlet section is tensioned after the strip head is coiled for 3-5 circles, the upper roller 72 is lifted and stops rotating after the speed reaches 30mpm, and the lower roller 71 continuously runs synchronously with the strip steel 6.
When the process speed is 100mpm, the upper roller 72 of the outlet turning pinch roller is put into use for about 30S (different due to the influence of the positioning time of large and small coils) from the tail flicking to the completion of the positioning of the strip tail; during the period from the threading of the next tape head to the sheet building, the upper pinch roll 72 at the outlet is turned to the pinch roll to be put into use for about 25 seconds (different due to the influence of the sheet building time). In the above two processes, the leading and trailing belts carry a large amount of magnesium oxide powder when passing over the reflecting mirror 1 b.
Before compressed air is introduced for blowing, the steel mill adopts a method of manually lightly wiping a photoelectric switch reflector to clean the reflector, production posts and maintenance personnel need to closely match within 15 seconds of conversion operation of an outlet section (the manual light wiping of the reflector can cause repeated interruption of grating signals, so that the positioning of an outlet strip tail and the coiling of a strip head can be influenced, the light wiping operation time can only be controlled in the 15 seconds of coil unloading of an outlet trolley), other faults can be caused if the matching is improper, faults such as abnormal coiling time sequence and the like are caused, and a large amount of manpower waste is caused.
Then, the steel mill adopts the strip steel detection device of the outlet turning pinch roll of the embodiment, the compressed air purging cannot cause the interruption of grating signals, the normal operation of the time sequence of a production line can be ensured, and the faults such as abnormal coiling time sequence of the production line and the like do not occur in one year of use. Considering the cost problem of compressed air and the noise problem (higher than 80 decibels) when the compressed air is purged, and based on the process flow and the parameter configuration, in the steel mill, a PLC (programmable logic controller) automatically controls the opening and closing time sequence of an electromagnetic valve to be combined with the operation time sequence of the outlet section transformation, namely, the purging operation of a photoelectric switch reflector is started during the outlet slitting period until the tape head is completely reeled, and the duration is about 3 min. When the reflector is still shielded by magnesium oxide and other dust in an abnormal manner after purging and under other conditions requiring additional supplementary purging, an operator realizes corresponding purging operation through manual operation of a field button according to requirements.
Through the embodiment, the utility model has the following beneficial effect or advantage:
1) this application detects belted steel through setting up photoelectric switch to set up and sweep the pipeline intermittent type nature and sweep the dust on the second detection component that is located the belted steel below, avoid causing the detected signal to lose because of the powder. And the compressed air purging process can not influence the transmission of light detected by the photoelectric switch, so that the operation time of outlet conversion is ensured, and the stable operation capacity of the unit is improved.
2) This application is through the installation angle who sets up the photoelectric switch speculum to and sweep the contained angle of pipeline and speculum, make the dust that blows off leave the speculum downwards, contain the lower surface that the dust air current can not contact belted steel, reach the anticipated effect of sweeping and furthest avoids the influence of the magnesium oxide dust that sweeps to belted steel lower surface.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A strip steel detection device of an outlet turning pinch roll is characterized in that: including photoelectric switch, purge pipeline, solenoid valve and switch module, wherein:
the photoelectric switch is electrically connected with the controller of the outlet turning pinch roll, the photoelectric switch comprises a first detection component and a second detection component, and the first detection component and the second detection component are respectively arranged above and below the strip steel;
the air outlet of the purging pipeline is aligned to the second detection component, the electromagnetic valve is installed on the purging pipeline, and the switch assembly and the controller are both electrically connected with the electromagnetic valve.
2. The strip steel detection device of the exit turning pinch roll as claimed in claim 1, characterized in that: the photoelectric switch is a mirror-reflection type photoelectric switch including an infrared transceiver as the first detecting means and a reflecting mirror as the second detecting means.
3. The strip steel detection device of the exit turning pinch roll as claimed in claim 2, characterized in that: the reflecting mirror is installed in an inclined mode, and an included angle between a plane where the reflecting mirror is located and the horizontal plane is 30-60 degrees.
4. The strip steel detection device of the exit turning pinch roll as claimed in claim 3, characterized in that: the included angle between the axis of the air outlet of the purging pipeline and the plane where the reflector is located is 20-30 degrees.
5. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 1 to 4, wherein: the pipe diameter of the purging pipeline is 3-10 mm.
6. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 2 to 4, wherein: and the air outlet of the purging pipeline is 3-10 cm away from the reflector.
7. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 1 to 4, wherein: the switch component is an operation button.
8. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 1 to 4, wherein: the switch assembly is a timing switch.
9. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 1 to 4, wherein: and the purging pipeline is arranged on a steel structure of the outlet turning pinch roll.
10. The apparatus for inspecting a strip of exit-turning pinch rolls as claimed in any one of claims 1 to 4, wherein: the controller is a PLC system with a built-in timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922094360.3U CN211588015U (en) | 2019-11-28 | 2019-11-28 | Strip steel detection device of outlet steering pinch roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922094360.3U CN211588015U (en) | 2019-11-28 | 2019-11-28 | Strip steel detection device of outlet steering pinch roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211588015U true CN211588015U (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922094360.3U Active CN211588015U (en) | 2019-11-28 | 2019-11-28 | Strip steel detection device of outlet steering pinch roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211588015U (en) |
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2019
- 2019-11-28 CN CN201922094360.3U patent/CN211588015U/en active Active
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