CN103551392A - Transmission device for cold-rolled strip steel production line and transmission method of transmission device - Google Patents

Abstract

The invention provides a transmission device for a cold-rolled strip steel production line and a control method of the transmission device. According to the transmission device for the cold-rolled strip steel production line, a plurality of floating devices are used for producing continuous wind pressure, so that cold-rolled strip steel can be transmitted in a baking oven in a non-contact manner, the baking effect of the baking oven on the cold-rolled strip steel is strengthened, and the surface quality of the cold-rolled strip steel is improved greatly. A control system is further used for acquiring specifications and transmission speeds of the cold-rolled strip steel as well as welding seam signals getting in and out of the baking oven in real time, and the air pressure required by the floating devices can be adjusted timely and automatically for the cold-rolled strip steel with different specifications, so that the transmission of the cold-rolled strip steel is smooth, the production efficiency is improved, accidents possibly caused by too low or too high wind pressure of the floating devices or incorrect switching time are avoided, and the production safety is improved.

Description

Transmission device and drive method thereof for cold rolled strip steel production line

Technical field

The present invention relates to a kind of device for output strip line, relate in particular to a kind of transmission device for cold rolled strip steel production line and control method thereof.

Background technology

Along with the industries such as automobile, power equipment, building materials and municipal administration are for realizing industrial upgrading, continually develop the needs of high standard, high value added product, to the steel raw material of upstream, particularly more and more higher to the surface quality requirement of all kinds of cold-strips; And at present on Cold Strip Processing Line, the transmission of band steel generally adopts roller+motor (contact) kind of drive, this mode cannot meet the requirement of the product Surface Qualities such as silicon steel after face coat and some special stainless strip.

Summary of the invention

The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, to adopt blast to realize the non-contact transmission of cold-strip steel.

For achieving the above object, the invention provides a kind of transmission control device for cold rolled strip steel production line, be arranged in the oven of described cold rolled strip steel production line, described oven is outer is equipped with backspin rolls near its entrance and exit, described transmission control device comprises some levitrons, showy device blower fan and control system, described some levitrons equidistantly form a line and are arranged in oven, two levitrons at described some levitrons two ends are entrance and the exit of close described oven respectively, described some levitrons are all connected with described showy device blower fan, described levitron blower fan is connected with described control system telecommunications, described control system is for obtaining the specification of described cold-strip steel, transmission speed and pass in and out the weld seam signal of described oven, and by calculating in real time the blast setting value of described levitron and the switching time of this setting value, by controlling the rotating speed of described showy device blower fan, regulate described showy device blast to described setting value simultaneously.

Further, 146 meters of described oven total lengths, the quantity of described levitron is 18, and it is 6 meters, interval between two, and levitron and the distance between described hot oven entrance of close described hot oven entrance are 36.3 meters.

The present invention also provides a kind of control method for the above-mentioned transmission control device for cold rolled strip steel production line, comprising:

Step 1: when new volume cold-strip steel arrives the entrance of oven, obtain by control system the weld seam signal that this rolls up product specification, the speed of service of cold-rolled strip and enters oven;

Step 2: newly roll up cold-strip steel and continue to transmit in oven, described control system calculates the blast setting value of the device that floats according to the specification of new volume cold-strip steel, to newly roll up the specification of cold-strip steel and the specification of a upper volume cold-strip steel is made comparisons simultaneously, if both specifications are identical, the blast of controlling levitron is constant; If the former bandwidth is less than the latter, controls levitron pressure, before new volume cold-strip steel arrives the levitron of the most close described hot oven entrance, blast is adjusted to described setting value; If the former band is wider than the latter, blast is adjusted to described setting value after controlling described levitron pressure arrives the most close described hot oven entrance levitron at new volume cold-strip steel;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel by described oven outlet, described control system quits work, remains to next volume cold-strip steel by the blast of described levitron and enters described oven.

Further, in described step 2, if the former bandwidth is less than the latter, control described levitron and blast is adjusted to described setting value during distance to a declared goal before new volume cold-strip steel arrives the levitron of the most close described hot oven entrance, described control system is carried out integration by the transmission speed of new volume cold-strip steel that it is obtained, thereby obtains newly rolling up the time that cold-strip steel arrives assigned address.

Further, in described step 2, if the former band is wider than the latter, control described levitron and blast is adjusted to described setting value during distance to a declared goal after new volume cold-strip steel reaches the levitron of the most close described hot oven entrance, described control system is carried out integration by the transmission speed of new volume cold-strip steel that it is obtained, thereby obtains newly rolling up the time that cold-strip steel arrives assigned address.

Further, described distance to a declared goal is 3-5 rice.

Further, the computing formula of the blast of showy device pressure setting value is as follows:

$P_0=\frac{(L_0\&CenterDot;{\mathrm{\&delta;}}_G\&CenterDot;{\mathrm{\&rho;}}_G)/4}{{\mathrm{<figure-callout\; id="1"\; label="m"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">m</figure-callout>}}_1+m_2\frac{{\mathrm{<figure-callout\; id="1"\; label="L"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">L</figure-callout>}}_1}{4}-m_1{\mathrm{<figure-callout\; id="2"\; label="m"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">m</figure-callout>}}_2};$

Wherein, $m_1=\frac{{\mathrm{\&delta;}}_J}{{\mathrm{\&delta;}}_J+0.44(h+h_b)}\&CenterDot;\left({\mathrm{\&delta;}}_J\sin {\mathrm{\&theta;}}_a\right),$ $m_2=\frac{\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2};$

Wherein, P ₀: adjusted value; L ₀: cold-strip steel span; δ _g: cold-strip steel thickness; ρ _g: cold-strip steel density; δ _j: levitron jet orifice width; θ _a: the angle of jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; h _b: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.

Compared with prior art, the present invention has following beneficial effect:

Transmission device for cold rolled strip steel production line provided by the invention adopts some showy devices to manufacture continuous blast, make the cold-strip steel can contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, greatly increased the surface quality of cold-strip steel; The present invention also adopts specification, the transmission speed of cold-strip steel described in control system Real-time Obtaining and passes in and out the weld seam signal of described oven, can automatically adjust in time the required blast of device that floats to the cold-strip steel of different size, make the transmission of cold-strip steel more smooth, improved the efficiency of its production, and the accident that may cause while having avoided showy device blast too small, excessive or switching time incorrect, has improved the security of its production.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described:

The structural representation of the transmission device for cold rolled strip steel production line that Fig. 1 provides for the embodiment of the present invention;

The flow chart of the drive method of the transmission device for cold rolled strip steel production line that Fig. 2 provides for the embodiment of the present invention.

In Fig. 1,

1: device floats; 2: control system; 3: cold-strip steel; 4: oven; 41: entrance; 42: outlet; 5: backspin rolls; 6: levitron blower fan.

The specific embodiment

The transmission device for cold rolled strip steel production line and the drive method thereof that the present invention are proposed below in conjunction with the drawings and specific embodiments are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of the aid illustration embodiment of the present invention lucidly.

The invention provides a kind of transmission device for cold rolled strip steel production line and control method thereof, the described transmission device for cold rolled strip steel production line adopts some showy devices to manufacture continuous blast, make the cold-strip steel can contactlessly transmission in oven, strengthen the cured effect of oven to cold-strip steel, greatly increased the surface quality of cold-strip steel; The present invention also adopts specification, the transmission speed of cold-strip steel described in control system Real-time Obtaining and passes in and out the weld seam signal of described oven, can automatically adjust in time the required blast of device that floats to the cold-strip steel of different size, make the transmission of cold-strip steel more smooth, improved the efficiency of its production, and the accident that may cause while having avoided showy device blast too small, excessive or switching time incorrect, has improved the security of its production.

Please refer to Fig. 1 and Fig. 2, the structural representation of the transmission device for cold rolled strip steel production line that Fig. 1 provides for the embodiment of the present invention; The flow chart of the drive method of the transmission device for cold rolled strip steel production line that Fig. 2 provides for the embodiment of the present invention.

As shown in Figure 1, the embodiment of the present invention provides a kind of transmission control device for cold rolled strip steel production line, be arranged in the oven 4 of described cold rolled strip steel production line, described oven 4 is outer is equipped with backspin rolls 5 near its entrance and exit, cold-strip steel 3 supports by described backspin rolls 5 and the tensioner being arranged in cold rolled strip steel production line, guiding and transmission, described transmission device comprises some levitrons 1, levitron blower fan 6 and control system 2, described some levitrons 1 equidistantly form a line and are arranged in oven 4, two levitrons 1 at described some levitrons 1 two ends are entrance and the exit of close described oven 4 respectively, described some levitrons 1 are all connected with described showy device blower fan 6, described levitron blower fan 6 is connected with described control system 2 telecommunications, described control system 2 is for obtaining the specification of described cold-strip steel 3, transmission speed and pass in and out the weld seam signal of described oven 4, and by calculating in real time the blast setting value of described levitron 1 and the switching time of this setting value, by controlling the rotating speed of described showy device blower fan 6, regulate described showy device blast to described setting value simultaneously.

In the present embodiment, described cold-strip steel 3 does not contact any carrying roller after entering oven 4, by the device 1 that floats, supports completely, and transmits by the tensioner being arranged in cold rolled strip steel production line.At oven 4 entrances, to being provided with a large amount of bellows that are arranged symmetrically with up and down from it between a nearest showy device 1, playing stable and support the effect of cold-strip steel 3, the pressure of bellows is not with the specifications vary of cold-strip steel 3.

Further, 146 meters of oven 4 total lengths, the quantity of described levitron 1 is 18, it is 6 meters, interval between two, distance between the levitron 1 of the most close described oven 4 entrances and described oven 4 entrances is 36.3 meters, on the coating machine top roller of cold-strip steel 3 from cold rolled strip steel production line, naturally hang down and swing, and enter described oven 4 by described backspin rolls 5 delivery.

As shown in Figure 2, the embodiment of the present invention also provides a kind of control method for the above-mentioned transmission control device for cold rolled strip steel production line, and described control method comprises:

Step 1: when a volume cold-strip steel 3 arrives the entrance 41 of oven, obtain by control system 2 the weld seam signal that this rolls up product specification, the speed of service of cold-rolled strip 3 and enters oven;

Step 2: newly roll up cold-strip steel 3 and transmit in the interior continuation of oven 4, control system 2 will calculate according to the product specification of new volume cold-strip steel 3 the blast setting value of the device 1 that floats, and will newly roll up the specification of cold-strip steel 3 and the specification of a upper volume cold-strip steel 3 is made comparisons simultaneously.If both specifications are identical, the blast of controlling levitron 1 is constant; If the former bandwidth is less than the latter, control that levitron 1 that levitron pressure arrives the most close described oven 4 entrances at new volume cold-strip steel 3 is front is adjusted to described setting value by blast; If the former band is wider than the latter, controls described levitron pressure, after new volume cold-strip steel 3 arrives the levitron 1 that the most close described oven enters 4 mouthfuls, blast is adjusted to described setting value;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel 3 by described oven 4 outlet, described control system 2 quits work, remains to next volume cold-strip steel 3 by the blast of described levitron 1 and enters described oven 4.

Further, in described step 2, if the former bandwidth is less than the latter, control described levitron 1, when new volume cold-strip steel 3 arrives the levitron 1 front distance to a declared goal of the most close described oven 4 entrances, blast is adjusted to described setting value, described control system 2 is carried out integration by the transmission speed of new volume cold-strip steel 3 that it is obtained, thereby obtains newly rolling up the time that cold-strip steel 3 arrives assigned addresses.

Further, in described step 2, if the former band is wider than the latter, control described levitron 1, when new volume cold-strip steel 3 reaches the levitron 1 rear distance to a declared goal of the most close described oven 4 entrances, blast is adjusted to described setting value, described control system 2 is carried out integration by the transmission speed of new volume cold-strip steel 3 that it is obtained, thereby obtains newly rolling up the time that cold rolling strap 3 steel arrive assigned addresses.

Preferably, above-mentioned distance to a declared goal is 3-5 rice.

Further, the computing formula of the blast of described levitron setting value is as follows:

$P_0=\frac{(L_0\&CenterDot;{\mathrm{\&delta;}}_G\&CenterDot;{\mathrm{\&rho;}}_G)/4}{{\mathrm{<figure-callout\; id="1"\; label="m"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">m</figure-callout>}}_1+m_2\frac{{\mathrm{<figure-callout\; id="1"\; label="L"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">L</figure-callout>}}_1}{4}-m_1{\mathrm{<figure-callout\; id="2"\; label="m"\; filenames="HDA0000420295270000011.png"\; state="\{\{state\}\}">m</figure-callout>}}_2};$

Wherein, $m_1=\frac{{\mathrm{\&delta;}}_J}{{\mathrm{\&delta;}}_J+0.44(h+h_b)}\&CenterDot;\left({\mathrm{\&delta;}}_J\sin {\mathrm{\&theta;}}_a\right),$ $m_2=\frac{\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2};$

Wherein, P ₀: adjusted value; L ₀: cold-strip steel span; δ _g: cold-strip steel thickness; ρ _g: cold-strip steel density; δ _j: levitron jet orifice width; θ _a: the angle of jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; h _b: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.

In sum, transmission device for cold rolled strip steel production line provided by the invention adopts some showy devices 1 to manufacture continuous blast, make the cold-strip steel 3 can contactlessly transmission in oven 4, strengthen the cured effect of 4 pairs of cold-strip steels 3 of oven, greatly increased the surface quality of cold-strip steel 3; The present invention also adopts specification, the transmission speed of cold-strip steel 3 described in control system 2 Real-time Obtainings and passes in and out the weld seam signal of described oven 4, can automatically adjust in time the required blast of device 1 that floats to the cold-strip steel 3 of different size, make the transmission of cold-strip steel 3 more smooth, improved the efficiency of its production, and the accident of having avoided showy device 1 may cause when too small or excessive or switching time is incorrect at blast, has improved the security of its production.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are changed and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (8)

1. the transmission control device for cold rolled strip steel production line, be arranged in the oven of described cold rolled strip steel production line, described oven is outer is equipped with backspin rolls near its entrance and exit, it is characterized in that, described transmission control device comprises some levitrons, showy device blower fan and control system, described some levitrons equidistantly form a line and are arranged in oven, two levitrons at described some levitrons two ends are entrance and the exit of close described oven respectively, described some levitrons are all connected with described showy device blower fan, described levitron blower fan is connected with described control system telecommunications, described control system is for obtaining the specification of described cold-strip steel, transmission speed and pass in and out the weld seam signal of described oven, and by calculating in real time the blast setting value of described levitron and the switching time of this setting value, by controlling the rotating speed of described showy device blower fan, regulate described showy device blast to described setting value simultaneously.

2. the transmission device for cold rolled strip steel production line according to claim 1, it is characterized in that, 146 meters of described oven total lengths, the quantity of described levitron is 18, it is 6 meters, interval between two, and levitron and the distance between described hot oven entrance of close described hot oven entrance are 36.3 meters.

3. the control method of the transmission control device for cold rolled strip steel production line according to claim 1, is characterized in that, comprising:

Step 1: when new volume cold-strip steel arrives the entrance of oven, obtain by control system the weld seam signal that this rolls up product specification, the speed of service of cold-rolled strip and enters oven;

Step 2: newly roll up cold-strip steel and continue to transmit in oven, described control system calculates the blast setting value of the device that floats according to the specification of new volume cold-strip steel, to newly roll up the specification of cold-strip steel and the specification of a upper volume cold-strip steel is made comparisons simultaneously, if both specifications are identical, the blast of controlling levitron is constant; If the former bandwidth is less than the latter, controls levitron pressure, before new volume cold-strip steel arrives the levitron of the most close described hot oven entrance, blast is adjusted to described setting value; If the former band is wider than the latter, blast is adjusted to described setting value after controlling described levitron pressure arrives the most close described hot oven entrance levitron at new volume cold-strip steel;

Step 3: after the weld seam signal when obtaining new volume cold-strip steel by described oven outlet, described control system quits work, remains to next volume cold-strip steel by the blast of described levitron and enters described oven.

4. the control method of the transmission control device for cold rolled strip steel production line according to claim 3, it is characterized in that, in described step 2, if the former bandwidth is less than the latter, control described levitron and blast is adjusted to described setting value during distance to a declared goal before new volume cold-strip steel arrives the levitron of the most close described hot oven entrance, described control system is carried out integration by the transmission speed of new volume cold-strip steel that it is obtained, thereby obtains newly rolling up the time that cold-strip steel arrives assigned address.

5. the control method of the transmission control device for cold rolled strip steel production line according to claim 4, is characterized in that, described distance to a declared goal is 3-5 rice.

6. the control method of the transmission control device for cold rolled strip steel production line according to claim 3, it is characterized in that, in described step 2, if the former band is wider than the latter, control described levitron and blast is adjusted to described setting value during distance to a declared goal after new volume cold-strip steel reaches the levitron of the most close described hot oven entrance, described control system is carried out integration by the transmission speed of new volume cold-strip steel that it is obtained, thereby obtains newly rolling up the time that cold-strip steel arrives assigned address.

7. the control method of the transmission control device for cold rolled strip steel production line according to claim 6, is characterized in that, described distance to a declared goal is 3-5 rice.

8. according to the control method of the transmission control device for cold rolled strip steel production line described in claim 3 to 7 any one, it is characterized in that, the computing formula of the blast setting value of described levitron is as follows:

$P_0=\frac{(L_0\&CenterDot;{\mathrm{\&delta;}}_G\&CenterDot;{\mathrm{\&rho;}}_G)/4}{m_1+m_2\frac{L_1}{4}-m_1{m}_2};$

Wherein, $m_1=\frac{{\mathrm{\&delta;}}_J}{{\mathrm{\&delta;}}_J+0.44(h+h_b)}\&CenterDot;\left({\mathrm{\&delta;}}_J\sin {\mathrm{\&theta;}}_a\right),$ $m_2=\frac{\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2}{1+\mathrm{\&xi;}\&CenterDot;0.86{\left(\frac{{\mathrm{B\&delta;}}_J}{L_{1}h}\right)}^2};$

Wherein, P ₀: adjusted value; L ₀: cold-strip steel span; δ _g: cold-strip steel thickness; ρ _g: cold-strip steel density; δ _j: levitron jet orifice width; θ _a: the angle of jet and cold-strip steel steel face, value θ _a=30 °; H: the absolute altitude of cold-strip steel; h _b: levitron deflector height; B: levitron working width; L1: levitron length; ξ: flow resistance coefficient, value ξ=1.25-1.5.

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