Heating device for edge part of strip steel

Abstract

The invention discloses a strip steel edge heating device which comprises a hot air generating module, a control module and a hot air guiding module, and the hot air generating module is connected with the hot air guiding module; the hot air generating module is used for converting air into hot air at the target temperature and the target air speed and outputting the hot air to the hot air guiding module; the control module is used for determining adjusting parameters of the hot air guiding module based on the strip steel data of the to-be-trimmed strip steel and sending the adjusting parameters to the hot air guiding module; and the hot air guiding module is used for outputting hot air based on the target position and the target angle corresponding to the adjusting parameter in response to the adjusting parameter so as to heat the strip steel edge of the strip steel. Through the technical scheme provided by the invention, the yield of strip steel production can be improved.

Description

Technical Field

[0001] This application belongs to the field of strip steel manufacturing technology, and particularly relates to a heating device for the edge of a strip steel. Background Technology

[0002] In the production of strip steel, including non-oriented silicon steel, some products need to be edge-trimmed to meet the production requirements of downstream processes. Due to the low winter temperatures, edge cracking occurs during the trimming of hot-rolled coils. For coils with edge cracks, the cracked areas need to be removed or the edges need to be trimmed again after inspection, resulting in yield loss and issues such as matching narrower specification orders.

[0003] Therefore, the low yield rate in strip steel production is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] Embodiments of this application provide a heating device for the edge of a strip steel, which can at least partially improve the yield of strip steel production.

[0005] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0006] According to a first aspect of the present application, a heating device for the edge of a strip is provided. The device includes: a hot air generating module, a control module, and a hot air guiding module, wherein the hot air generating module is connected to the hot air guiding module; the hot air generating module is used to convert air into hot air at a target temperature and a target wind speed, and output the hot air to the hot air guiding module; the control module is used to determine the adjustment parameters of the hot air guiding module based on the strip data of the strip to be cut, and send the adjustment parameters to the hot air guiding module; the hot air guiding module is used to respond to the adjustment parameters and output the hot air based on a target position and a target angle corresponding to the adjustment parameters to heat the edge of the strip.

[0007] In some embodiments of this application, based on the foregoing scheme, determining the adjustment parameters of the hot air guiding module based on the strip data of the strip to be cut includes: acquiring the strip data; determining the lateral displacement parameter, height displacement parameter, and angle displacement parameter of the hot air guiding module based on the strip data, wherein the adjustment parameters include the lateral displacement parameter, the height displacement parameter, and the angle displacement parameter, the lateral displacement parameter and the height displacement parameter are used to control the hot air guiding module to output the hot air at the target position, and the angle displacement parameter is used to control the hot air guiding module to output the hot air at the target angle.

[0008] In some embodiments of this application, based on the foregoing scheme, determining the lateral displacement parameter of the hot air guiding module based on the strip data includes: obtaining the initial span of the hot air guiding module; determining the edge bite amount based on the trimming amount of the strip; determining the target span of the hot air guiding module based on the strip width and the edge bite amount; calculating the difference between the initial span and the target span, wherein the strip data includes the trimming amount and the strip width; if the difference is greater than 0, determining the difference as a displacement numerical parameter, and determining the direction of the hot air generating module as a displacement direction parameter to obtain the lateral displacement parameter, wherein the lateral displacement parameter includes the displacement numerical parameter and the displacement direction parameter; if the difference is less than 0, determining the difference as the displacement numerical parameter, and determining the opposite direction of the hot air generating module as the displacement direction parameter; if the difference is equal to 0, resetting the lateral displacement parameter to zero.

[0009] In some embodiments of this application, based on the foregoing scheme, the hot air guiding module includes a support unit and a hot air guiding unit, wherein the hot air guiding module is connected to the hot air generating module, and the support unit is deployed between the hot air guiding module and the ground; the support unit is used to control the hot air guiding unit to output the hot air at the target position based on the adjustment parameters; the hot air guiding unit is used to obtain the hot air from the hot air generating module and output the hot air at the target angle based on the adjustment parameters.

[0010] In some embodiments of this application, based on the foregoing scheme, the hot air guiding unit includes a second air inlet, a windbox body, a second air outlet, and a third air outlet. The second air inlet connects the hot air generating module and the windbox body, which has a C-shaped structure. The second and third air outlets are respectively deployed parallel to two branches of the windbox body. The second air inlet is used to obtain hot air from the hot air generating module. The windbox body is used to split the hot air into a first hot air at a first angle and a second hot air at a second angle based on the adjustment parameters, and to transmit the first hot air to the second air outlet and the second hot air to the third air outlet. The target angle includes both the first and second angles. The second air outlet is used to output the first hot air. The third air outlet is used to output the second hot air.

[0011] In some embodiments of this application, based on the foregoing scheme, determining the height displacement parameters and angular displacement parameters of the hot air guiding module based on the strip data includes: detecting the relative positional relationship between the strip and the air box body based on the strip wave height and strip thickness, wherein the strip data includes the strip wave height and strip thickness, and the relative positional relationship is used to indicate whether the strip is higher than the second air outlet or whether the strip is lower than the third air outlet; if the strip is higher than the second air outlet, or the strip is lower than the third air outlet, determining the height displacement parameter based on a first distance the strip exceeds the second air outlet or the third air outlet, and determining the angular displacement parameter based on the first distance; if the strip is not higher than the second air outlet and the strip is not lower than the third air outlet, determining the angular displacement parameter based on a second distance between the strip and the second air outlet.

[0012] In some embodiments of this application, based on the foregoing scheme, the main body of the windbox includes a baffle, a first air duct, and a second air duct, wherein the baffle is deployed at the connection position between the second air inlet and the main body of the windbox, the second air outlet is deployed on the first air duct, and the third air outlet is deployed on the second air duct; the baffle is used to split the hot air into the first hot air and the second hot air by adjusting to an angle corresponding to an angular displacement parameter, wherein the adjustment parameter includes the angular displacement parameter; the first air duct is used to transmit the first hot air to the second air outlet; the second air duct is used to transmit the second hot air to the third air outlet.

[0013] In some embodiments of this application, based on the foregoing scheme, the support unit includes a support device, a horizontal adjustment device, and a height adjustment device, wherein the support device is deployed below the hot air guiding unit, the height adjustment device is deployed below the support device, and the horizontal adjustment device is deployed to the side of the support device; the horizontal adjustment device is used to adjust the support device to a horizontal position corresponding to a lateral displacement parameter; the height adjustment device is used to adjust the support device to a height position corresponding to a height displacement parameter, wherein the adjustment parameters include the lateral displacement parameter and the height displacement parameter, and the target position includes the horizontal position and the height position.

[0014] In some embodiments of this application, based on the foregoing scheme, the hot air generation module includes a heating unit and a connection unit, wherein the heating unit is connected to the hot air guiding module through the connection unit; the heating unit is used to heat the collected air to the target temperature and input the hot air to the connection unit at the target wind speed; the connection unit is used to transmit the hot air to the hot air guiding module.

[0015] In some embodiments of this application, based on the foregoing scheme, the heating unit includes a first air inlet, a heating element, and a first air outlet, wherein the first air outlet is connected to the connecting unit; the first air inlet is used to acquire the air at an initial temperature and an initial wind speed; the heating element is used to heat the air from the initial temperature to the target temperature; the first air outlet is used to convert the air from the initial wind speed to the target wind speed through convection heat transfer to obtain the hot air at the target temperature and the target wind speed, and output the hot air to the connecting unit.

[0016] In this application, the heating device for the edge of the strip steel includes: a hot air generation module, a control module, and a hot air guiding module, wherein the hot air generation module is connected to the hot air guiding module; the hot air generation module is used to convert air into hot air at a target temperature and target wind speed, and output the hot air to the hot air guiding module; the control module is used to determine the adjustment parameters of the hot air guiding module based on the strip steel data to be cut, and send the adjustment parameters to the hot air guiding module; the hot air guiding module is used to respond to the adjustment parameters and output hot air based on the target position and target angle corresponding to the adjustment parameters to heat the edge of the strip steel. In other words, using hot air obtained by heating air to heat the edge of the strip steel eliminates the need for additional production line modifications, and when heating the edge of the strip steel, there is no need to wait for an additional heat source; only air needs to be heated, thus improving the heating efficiency of the strip steel edge and thereby increasing the yield of strip steel production.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A schematic diagram of a scenario in which the heating device for the strip edge of the present application can be applied is shown; Figure 2 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 1 ; Figure 3 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 2 ; Figure 4 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 3 ; Figure 5 A schematic diagram of the structure of a hot air box according to an embodiment of this application is shown; Figure 6 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 4 ; Figure 7 A schematic diagram of the spoiler in an embodiment of this application is shown. Figure 1 ; Figure 8 A schematic diagram of the spoiler in an embodiment of this application is shown. Figure 2 ; Figure 9 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 5 ; Figure 10 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 6 ; Figure 11 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 7 ; Figure 12 A schematic diagram of the heating device for the edge of the strip in an embodiment of this application is shown. Figure 1 ; Figure 13 A schematic diagram of the heating device for the edge of the strip in an embodiment of this application is shown. Figure 2 ; Figure 14 A schematic diagram illustrating the process of calculating the hot air box width adjustment amount s1 in an embodiment of this application is shown; Figure 15 A schematic diagram of the box height adjustment process in an embodiment of this application is shown; Figure 16 A schematic diagram of the spoiler angle adjustment process in an embodiment of this application is shown; Figure 17 A schematic diagram of the heat flux in an embodiment of this application is shown; Figure 18 A schematic diagram illustrating the synergistic relationship between the box height and the spoiler angle in an embodiment of this application is shown. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0023] It should be noted that the term "multiple" as used herein refers to two or more. The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of the terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0024] To enable those skilled in the art to better understand this application, firstly, in conjunction with Figure 1 A brief description of the application scenarios involved in this application is provided.

[0025] See Figure 1 The diagram illustrates a scenario where a heating device for the strip edge can be applied according to embodiments of this application. Figure 1As shown, the strip edge heating device proposed in this application is installed before the edge trimming unit and symmetrically arranged on both sides of the production line, cleverly utilizing the limited space between the pinch rollers and the straightening rollers to heat the strip edge. In other words, the complete production line includes two symmetrically arranged strip edge heating devices, each used to heat the edges of the strip on both sides. The strip edge heating device proposed in this application is used to heat the edges of strips, including non-oriented silicon steel, to complete the subsequent edge trimming process.

[0026] Reference Figure 2 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 1 ,like Figure 2 As shown, the heating device for the edge of the strip includes: a hot air generating module 201, a control module 202, and a hot air guiding module 203, wherein the hot air generating module 201 is connected to the hot air guiding module 203; the hot air generating module 201 is used to convert air into hot air at a target temperature and target wind speed, and output the hot air to the hot air guiding module 203; the control module 202 is used to determine the adjustment parameters of the hot air guiding module 203 based on the strip data of the strip to be cut, and send the adjustment parameters to the hot air guiding module 203; the hot air guiding module 203 is used to respond to the adjustment parameters and output the hot air based on the target position and target angle corresponding to the adjustment parameters to heat the edge of the strip.

[0027] The above-mentioned device uses hot air obtained by heating air to heat the edge of the strip steel, without the need for additional production line modifications. Furthermore, when heating the edge of the strip steel, there is no need to wait for an additional heat source; only the air needs to be heated, which improves the heating efficiency of the strip steel edge and thus increases the yield of strip steel production.

[0028] In one embodiment of this application, the adjustment parameters of the hot air guiding module can be determined based on the strip data of the strip to be cut in the following manner, but not limited to: acquiring strip data; determining the lateral displacement parameter, height displacement parameter, and angle displacement parameter of the hot air guiding module based on the strip data, wherein the adjustment parameters include the lateral displacement parameter, the height displacement parameter, and the angle displacement parameter, the lateral displacement parameter and the height displacement parameter are used to control the hot air guiding module to output the hot air at the target position, and the angle displacement parameter is used to control the hot air guiding module to output the hot air at the target angle.

[0029] Optionally, in this embodiment, the strip data may include, but is not limited to, strip width, strip edge bite amount, strip thickness, etc.

[0030] In one embodiment of this application, the lateral displacement parameter of the hot air guiding module can be determined based on the strip data in the following manner, but not limited to: obtaining the initial span of the hot air guiding module; determining the edge bite amount based on the trimming amount of the strip; determining the target span of the hot air guiding module based on the strip width and the edge bite amount; calculating the difference between the initial span and the target span, wherein the strip data includes the trimming amount and the strip width; if the difference is greater than 0, determining the difference as a displacement numerical parameter, and determining the direction of the hot air generating module as a displacement direction parameter to obtain the lateral displacement parameter, wherein the lateral displacement parameter includes the displacement numerical parameter and the displacement direction parameter; if the difference is less than 0, determining the difference as the displacement numerical parameter, and determining the opposite direction of the hot air generating module as the displacement direction parameter; if the difference is equal to 0, resetting the lateral displacement parameter to zero.

[0031] In one embodiment of this application, reference is made to Figure 3 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 2 ,like Figure 3 As shown, the hot air guiding module 203 includes a support unit 301 and a hot air guiding unit 302. The hot air guiding module 302 is connected to the hot air generating module 201, and the support unit 301 is deployed between the hot air guiding module 302 and the ground. The support unit 301 is used to control the hot air guiding unit 302 to output the hot air at the target position based on the adjustment parameters. The hot air guiding unit 302 is used to obtain the hot air from the hot air generating module and output the hot air at the target angle based on the adjustment parameters.

[0032] In one embodiment of this application, reference is made to Figure 4 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 3 ,like Figure 4As shown, the hot air guiding unit 302 includes a second air inlet 401, a bellows body 402, a second air outlet 403, and a third air outlet 404. The second air inlet 401 connects the hot air generating module 201 and the bellows body 402. The bellows body 402 has a C-shaped structure. The second air outlet 403 and the third air outlet 404 are respectively deployed parallel to two branches of the bellows body 402. The second air inlet 403 is used to obtain hot air from the hot air generating module 201. The bellows body 402 is used to split the hot air into a first hot air at a first angle and a second hot air at a second angle based on the adjustment parameters, and to transmit the first hot air to the second air outlet 403 and the second hot air to the third air outlet 404. The target angle includes the first angle and the second angle. The second air outlet 403 is used to output the first hot air. The third air outlet 404 is used to output the second hot air.

[0033] Optionally, in this embodiment, refer to Figure 5 The diagram shows a structural schematic of a bellows body according to an embodiment of this application, such as... Figure 5 As shown, the width of the main body of the bellows is d and the height is w. The air outlet can be a single piece or a matrix of circles, rectangles, etc. This application does not impose strict restrictions on it.

[0034] In one embodiment of this application, the height displacement parameter and angular displacement parameter of the hot air guiding module can be determined based on the strip data in the following manner, but not limited to: detecting the relative positional relationship between the strip and the air box body based on the strip wave height and strip thickness, wherein the strip data includes the strip wave height and the strip thickness, and the relative positional relationship is used to indicate whether the strip is higher than the second air outlet or whether the strip is lower than the third air outlet; if the strip is higher than the second air outlet, or the strip is lower than the third air outlet, the height displacement parameter is determined based on a first distance of the strip exceeding the second air outlet or the third air outlet, and the angular displacement parameter is determined based on the first distance; if the strip is not higher than the second air outlet and the strip is not lower than the third air outlet, the angular displacement parameter is determined based on a second distance between the strip and the second air outlet.

[0035] In one embodiment of this application, reference is made to Figure 6 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 4 ,like Figure 6As shown, the main body 402 of the air box includes a baffle 601, a first air duct 602, and a second air duct 603. The baffle 601 is deployed at the connection position between the second air inlet 403 and the main body 402 of the air box. The second air outlet 403 is deployed on the first air duct 602, and the third air outlet 404 is deployed on the second air duct 603. The baffle 601 is used to split the hot air into the first hot air and the second hot air by adjusting to the angle corresponding to the angle displacement parameter, wherein the adjustment parameter includes the angle displacement parameter. The first air duct 602 is used to transmit the first hot air to the second air outlet. The second air duct 603 is used to transmit the second hot air to the third air outlet.

[0036] Optionally, in this embodiment, the spoiler is adjusted up or down using the horizontal line where it is located as a reference to split the hot air transmitted to the main body of the air box. The adjustment angle range of the spoiler can be set according to the actual application scenario, for example, it can be set to +120° (rotating counterclockwise upwards from the horizontal line) to -120° (rotating clockwise downwards from the horizontal line).

[0037] Optionally, in this embodiment, taking a spoiler with an adjustable angle of +120° to -120° as an example, refer to... Figure 7 A schematic diagram of the spoiler in an embodiment of this application is shown. Figure 1 ,like Figure 7 As shown, adjusting the angle of the spoiler to -120° allows only hot air to pass through the first air duct and exit from the second air outlet. (Refer to...) Figure 8 A schematic diagram of the spoiler in an embodiment of this application is shown. Figure 2 ,like Figure 8 As shown, adjusting the angle of the spoiler to +120° allows hot air to be output from the third air outlet only through the second air duct.

[0038] In practical applications, baffles or other equipment can be added at the horizontal position of the spoiler to achieve single-channel output of hot air, or only a rotatable spoiler can be deployed to adjust the turbulence of most of the hot air to reduce the overall deployment cost of the equipment.

[0039] In one embodiment of this application, reference is made to Figure 9 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 5 ,like Figure 9As shown, the support unit 301 includes a support device 901, a horizontal adjustment device 902, and a height adjustment device 903. The support device 901 is deployed below the hot air guiding unit 302, the height adjustment device 903 is deployed below the support device 901, and the horizontal adjustment device 902 is deployed to the side of the support device. The horizontal adjustment device 902 is used to adjust the support device 901 to a horizontal position corresponding to a lateral displacement parameter. The height adjustment device 903 is used to adjust the support device 901 to a height position corresponding to a height displacement parameter. The adjustment parameters include the lateral displacement parameter and the height displacement parameter, and the target position includes the horizontal position and the height position.

[0040] Optionally, in this embodiment, the height adjustment device and the level adjustment device can be adjustment devices such as hydraulic rods.

[0041] In one embodiment of this application, reference is made to Figure 10 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 6 ,like Figure 10 As shown, the hot air generation module 201 includes a heating unit 1001 and a connection unit 1002, wherein the heating unit 1001 is connected to the hot air guiding module 203 through the connection unit 1002; the heating unit 1001 is used to heat the collected air to the target temperature and input the hot air to the connection unit 1002 at the target wind speed; the connection unit 1002 is used to transmit the hot air to the hot air guiding module 203.

[0042] In one embodiment of this application, reference is made to Figure 11 A schematic diagram of the heating device for the strip edge in an embodiment of this application is shown. Figure 7 The heating unit 1001 includes a first air inlet 1101, a heating element 1102, and a first air outlet 1103, wherein the first air outlet 1103 is connected to the connection unit 1002; the first air inlet 1101 is used to acquire the air at an initial temperature and an initial wind speed; the heating element 1102 is used to heat the air from the initial temperature to the target temperature; the first air outlet 1103 is used to convert the air from the initial wind speed to the target wind speed through convection heat transfer to obtain the hot air at the target temperature and the target wind speed, and output the hot air to the connection unit.

[0043] Optionally, in this embodiment, the connecting unit includes a connecting component comprising a hose assembly and at least two fasteners, wherein the hose assembly comprises at least one hose, the heating unit and the hose assembly are connected by fasteners, and the hose assembly and the hot air guiding module are connected by fasteners; if the hose assembly comprises at least two hoses, adjacent hoses are connected by fasteners.

[0044] To enable those skilled in the art to better understand the heating device for the strip edge proposed in this application, the following will be combined with Figure 12 Please refer to the explanation. Figure 12 The diagram illustrates the structure of the heating device for the strip edge in an embodiment of this application. Figure 1 .

[0045] like Figure 12 As shown, the heating device for the strip edge includes a hot air blower (i.e., heating unit), a connector (i.e., connecting unit), a hot air box (i.e., hot air guiding unit), and a support (i.e., support unit). The structure and functional characteristics of each part are described below: Using a hot air blower as a heat source, it collects room-temperature air through the air inlet, heats it with internal heating elements, and then outputs hot air with a stable temperature and air velocity (air pressure) through the air outlet. It has an internal control system (deployed in the control module) that can exchange data with the production line's automation system, facilitating air temperature control.

[0046] The connectors include air ducts and multiple fasteners (such as clamps), serving as a hot air transfer and delivery mechanism. These fasteners are fixedly connected to the outlet of the hot air blower and the inlet of the hot air box. Because the air ducts are flexible, heat-resistant, and insulated, and have adjustable positions and airflow direction, the relative installation positions of the hot air blower and the hot air box can be easily set according to the actual installation space of the production line.

[0047] Optionally, in this embodiment, refer to Figure 13 The diagram illustrates the structure of the heating device for the strip edge in an embodiment of this application. Figure 2 Where B is the strip width, D is the hot air box span (i.e., the distance between two symmetrically distributed hot air boxes), l is the air outlet length, and w is the air outlet width. t is the edge bite-in of the strip, h is the opening degree (i.e., the distance between the second and third air outlets), t is the strip thickness, α is the flow splitting angle, and β is the baffle adjustment angle. Figure 13 In the figure, β=0°), s1 is the width adjustment amount of the heating device (i.e., the lateral displacement parameter), s2 is the height adjustment amount of the heating device (i.e., the height displacement parameter), H1 is the height of the hot air blower outlet from the ground, and H2 is the height of the hot air blower outlet (i.e., the first outlet) from the ground.

[0048] The above parameters can be determined, but are not limited to, in the following ways: the length l and width w of the hot air box vent can be determined according to production requirements; the opening degree of the hot air box should satisfy: t < h ≤ h0, where h0 can be taken as 150; the flow splitting angle inside the hot air box should satisfy: α min ≤α≤α max , where α min 45° can be taken, α max The angle can be 180°; the spoiler adjustment angle should satisfy: -β0≤β≤β0, where β0 can be 120°; the hot air box width adjustment should satisfy: s1≥(B max -B min ) / 2; The height adjustment of the hot air box should meet: s2≥ht; The edge bite of the strip should meet: =B / 2-D / 2, where 0≤ ≤w, where w is determined by production requirements and can be 300; the height difference between the hot air blower outlet and the hot air box inlet should satisfy: |H1-H2|≤H0, where H0 can be 500.

[0049] The hot air box, comprising an air inlet (second air inlet), the main body of the box, and air outlets (second and third air outlets), is a crucial component for converting the input hot air into the hot air source required for heating the edges of the strip. Hot air flows in through the air inlet, passes through the main body of the box, and exits through the air outlets. The hot air box has a C-shaped external structure, with internal air ducts (including a first and a second air duct) to facilitate the change in hot air flow direction. The air outlets are positioned opposite each other on the inner surface of the box. The strip to be heated, placed within the C-shaped frame, can be simultaneously heated by hot air from both the upper and lower surfaces, improving heating efficiency.

[0050] The air box is equipped with baffles, which are used to adjust the heat flux of the upper and lower surfaces of the strip (the number of arrows at the air outlet indicates the amount of heat flux). For example, if the strip deviates from the center of the "C-shape" due to production requirements, equipment structure, or strip shape, or if the opening needs to be adjusted, the baffles can be adjusted simultaneously to change the heat flux of the upper and lower surfaces of the "C-shape" in order to meet the heating requirements of the product.

[0051] The support system includes a bracket (i.e., support equipment) and an adjustment mechanism (i.e., horizontal adjustment device and height adjustment device). The hot air box is mounted on the bracket, which serves a load-bearing function and can be composed of multiple fixed rods, or connecting rods, support plates, etc. The adjustment mechanism is connected to the bracket and can be a screw, hydraulic cylinder, motor, or other components, serving a movement and adjustment function. The adjustment mechanism can achieve height and width adjustment to meet different product manufacturing needs.

[0052] Optionally, in this embodiment, since the strip widths of different specifications are different (e.g., 1000mm, 1200mm), the trimming amount (the width of the edge to be removed) may also vary. Therefore, it is necessary to adjust the lateral displacement parameters in real time to ensure that the hot air always covers the edge area to be heated. For example, if the trimming amount is 3mm, the hot air needs to move inward by 3mm to avoid blowing onto the ineffective area that has been removed. (Refer to...) Figure 14 This diagram illustrates the process of calculating the hot air box width adjustment amount s1 in an embodiment of this application. Figure 14 As shown, the hot air box width adjustment amount s1 (i.e., the lateral displacement parameter) can be determined through, but is not limited to, the following steps: Step 1: Obtain the incoming material width B (i.e., strip width), the incoming material trimming amount dB (i.e., strip trimming amount), and the current span D1 of the hot air box (i.e., the initial span). Step 2: Based on the trimming amount, find the strip edge bite amount corresponding to the current trimming amount from the first correspondence as the optimal matching strip edge bite amount. (i.e., edge bite-in), where =dB+δ, where δ is given by looking up a table based on production experience; Step 3: Calculate the adjusted span D of the hot air box (i.e., the target span), where D = B - 2 .

[0053] Step 4: Calculate the hot air box width adjustment amount s1 (i.e., the difference between the initial span and the target span), where s1 = D - D1.

[0054] Step 5: Adjust the width based on the calculation result of s1.

[0055] When s1 > 0, adjust in the direction of increasing span (towards the hot air blower); When s1 < 0, adjust in the direction of decreasing span (away from the hot air blower); No adjustment is made when s1=0.

[0056] Optionally, in this embodiment, when a strip steel with an undulating and curved shape extends into the main body of the air box, if the strip steel is higher than or lower than the second air outlet, the strip steel will collide with the main body of the air box. In order to avoid the above situation, the solution proposed in this application adjusts the position of the main body of the air box according to the distance between the strip steel and the second air outlet, and between the strip steel and the third air outlet (i.e., determines the height displacement parameter) to avoid collision.

[0057] Furthermore, the angular displacement parameters of the spoiler are detected simultaneously, and the heat flux of the second and third air outlets is adjusted (the heat flux of the second air outlet is increased when the strip is biased towards the second air outlet, or the heat flux of the third air outlet is increased when the strip is biased towards the third air outlet) to improve the heating efficiency of the strip.

[0058] Specifically, based on the actual state of the strip steel inside the hot air box and considering the changes in its height, rapid heating of the strip steel's edges can be achieved by, but is not limited to, calculating the overall height adjustment s2 (i.e., height displacement parameter) and the baffle angle adjustment β (i.e., angular displacement parameter) using the following steps: Step 1: Obtain the strip thickness t, strip wave height P, and hot air box opening degree h; Step 2: Compare the wave height P with the rated height (ht) / 2, calculate the difference Dif, where Dif = P - (ht) / 2, and make a judgment (i.e., based on the wave height and thickness of the strip steel, detect the relative positional relationship between the strip steel and the main body of the wind box): When Dif ≥ 0 (i.e., the strip steel is higher than the second air outlet or the strip steel is lower than the third air outlet), proceed to steps 3 to 5; when Dif ≤ 0 (i.e., the strip steel is neither higher than the second air outlet nor lower than the third air outlet), proceed to steps 4 to 5. Step 3: (1) Calculate the critical adjustment height G, where G = P - (ht) / 2; (2) Calculate the strip adjustment height s2, where s2 = G + dG, where the value of dG is determined by production experience to avoid scratches on the strip surface and impact damage to the hot air box.

[0059] Step 4: Determine the adjustment direction of the turbulence angle β. Its magnitude can be determined by the actual working conditions: when the strip is close to the upper air outlet, -β0 ≤ β < -β t When the strip is close to the lower air outlet, β0 ≥ β > β t When the strip is in the middle, -β t ≤β≤β t Threshold β t It can be determined through training; Step 5: Simultaneously adjust the height s2 of the hot air box and the turbulence angle β to meet the requirements for rapid heating of the edges.

[0060] Optionally, in this embodiment, to better understand the process of adjusting the main body of the air box to a height position based on the height displacement parameter and adjusting the baffle based on the angle displacement parameter in the heating device for the edge of the strip proposed in this application, the number of arrows at the air outlet represents the magnitude of the heat flux. The following will further combine... Figure 15 to Figure 18 The above process is described, but it is not intended to limit the technical solutions of the embodiments of this application.

[0061] Reference Figure 15 The diagram illustrates the box height adjustment process in an embodiment of this application, as shown below. Figure 15As shown, the main body of the air box includes a second air outlet and a third air outlet. Supporting equipment is deployed between the main body of the air box and the height adjustment equipment. The height adjustment equipment allows the air box main body to be adjusted to a specific height by extending and retracting the position of the supporting equipment. The strip thickness is t, the strip wave height is P, and the hot air box opening is h. At time A, the main body of the bellows is in its initial position: based on the strip thickness t, strip wave height P1, and hot air box opening h, the distance between the strip and the second air outlet is calculated as P1-(ht) / 2≥0; this distance is defined as the first distance G1, and the height displacement parameter s2=G1+dG1 is calculated. The above process of detecting the height displacement parameter based on strip thickness, strip wave height, and hot air box opening is a continuous process. For example, at time A, the strip wave height at point q is used to determine the height displacement parameter, and then the height displacement parameter is continuously calculated and adjusted based on the strip wave height at each position after point q (dividing position intervals). Alternatively, at time A, the strip wave height at point v is used to determine the height displacement parameter, and the height is slowly adjusted according to the strip conveying rate to achieve displacement from point v to the position corresponding to the height displacement parameter. Alternatively, at time A, the highest value of the strip wave height is determined as the strip wave height (i.e., the strip wave height at point v). The strip wave height at point v is used to determine and adjust the height displacement parameters. The time when the strip passes through point v is determined according to the strip conveying rate. After the strip passes through point v, the height displacement parameters are recalculated and adjusted.

[0062] The height adjustment device responds to the height displacement parameter s2 and raises the main body of the air box to the corresponding height position. When the height reaches B, the main body of the air box rises and continues to heat: Based on the strip thickness t, the strip wave height P2, and the hot air box opening h, the distance between the strip and the third air outlet is calculated as P2-(ht) / 2≤0; the distance between the strip and the third air outlet is determined as the first distance G2, and the height displacement parameter s2=G2+dG1 is calculated.

[0063] Understandably, in the process of detecting whether the strip is higher than the second air outlet or lower than the third air outlet, it is necessary to simultaneously detect whether the strip is higher than the second air outlet and whether the strip is lower than the third air outlet. When the strip is detected to be higher than the second air outlet, the main body of the air box is raised and adjusted; when the strip is lower than the third air outlet, the main body of the air box is lowered and adjusted.

[0064] The height adjustment device responds to the height displacement parameter s2 and lowers the main body of the bellows to the corresponding height position. When the bellows body is lowered to time C, it is heated until the heating of the current strip edge is completed. When the heating is completed to time D, it returns to the initial position.

[0065] It should be noted that during the height adjustment of the main body of the air box by the height adjustment device, the angle of the spoiler is adjusted at the same time. For example, when moving from time A to time B, the angle of the spoiler is adjusted based on the angle displacement parameter to increase the heat flux of the second air outlet; or, when moving from time B to time C, the angle of the spoiler is adjusted to increase the heat flux of the third air outlet.

[0066] Reference Figure 16 The diagram illustrates the spoiler angle adjustment process in an embodiment of this application, as shown below. Figure 16 As shown, the spoiler is adjusted in angle (-120°≤β≤+120°) with the horizontal line as the reference (β=0°). When the strip to be heated is in position a, the spoiler angle β=0°, and the heat flux of the second air outlet and the third air outlet are equal.

[0067] When the height of the main body of the wind box is adjusted, the relative position of the strip to be heated and the main body of the wind box changes, that is, the distance between the strip to be heated and the second air outlet reaches the shortest distance. The angular displacement parameter β of the baffle plate is calculated to be 120°, so that the heat flux of the second air outlet is maximized.

[0068] Taking a spoiler with an adjustment angle range of -120° to +120° as an example, refer to... Figure 17 A schematic diagram of the heat flux in an embodiment of this application is shown, such as... Figure 17 As shown, for strip 1, when the main body of the wind box is heating the first part, since the distance between the strip and the third air outlet is the shortest, the angle of the baffle is adjusted counterclockwise to -120° so that the third air outlet maintains a heat flux of 1 (maximum airflow); when the main body of the wind box is heating the second part, since the distance between the strip and the second air outlet is the shortest, the angle of the baffle is adjusted clockwise to +120° so that the second air outlet maintains a heat flux of 2 (maximum airflow); when the main body of the wind box is heating the third part, since the distance between the strip and the third air outlet is the shortest, the angle of the baffle is adjusted so that the third air outlet returns to a heat flux of 1.

[0069] For strip 2, when the main body of the bellows is heating the first part, since the strip is biased towards the third air outlet, the angle of the baffle is adjusted (clockwise rotation) to keep the heat flux of the third air outlet at 4 and the heat flux of the third air outlet at 3 (heat flux 4 is greater than heat flux 3). When the main body of the bellows is heating the second part, since the strip is moving closer to the second air outlet and the distance reaches the shortest distance, the angle of the baffle is adjusted clockwise to +120° to keep the heat flux of the second air outlet at 2 (maximum airflow). When the main body of the bellows is heating the third part, the strip is gradually moving away from the second air outlet, so the angle of the baffle is adjusted (counterclockwise rotation) to restore the heat flux of the second air outlet to 4 and the heat flux of the third air outlet to 3 (heat flux 4 is greater than heat flux 3).

[0070] Reference Figure 18 This diagram illustrates the synergistic relationship between the box height and the spoiler angle in an embodiment of this application. Figure 18 As shown, when the strip is higher than the second air outlet, the height of the housing increases, and the baffle is adjusted counterclockwise to increase the heat flux of the second air outlet; or, when the strip is lower than the third air outlet, the height of the housing decreases, and the baffle is adjusted clockwise to increase the heat flux of the third air outlet.

[0071] It is understandable that when the distance between the strip and the second air outlet is at its shortest, the heat flux of the second air outlet is maximized when the spoiler is adjusted counterclockwise to its maximum angle; when the distance between the strip and the third air outlet is at its shortest, the heat flux of the third air outlet is maximized when the spoiler is adjusted counterclockwise to its maximum angle.

[0072] The strip edge heating device proposed in this application has a simple overall structure, fewer parts, and lower processing and procurement costs compared to electromagnetic heating and other methods. Furthermore, its small overall size facilitates installation and arrangement in limited spaces such as short production lines. It offers high heating efficiency and short production preparation time for the strip edge heating process; the hot air blower can quickly raise the temperature after startup, meeting the production requirement of heating immediately after uncoiling. It also boasts wide product compatibility, allowing for height and width adjustment to meet the heating needs of strip edges of different thicknesses and widths.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0074] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0075] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing computer program instructions, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0076] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A heating device with a steel edge, characterized in that, The device includes: a hot air generating module, a control module, and a hot air guiding module, wherein the hot air generating module is connected to the hot air guiding module; The hot air generation module is used to convert air into hot air at the target temperature and target wind speed, and output the hot air to the hot air guiding module; The control module is used to determine the adjustment parameters of the hot air guiding module based on the strip data of the strip to be cut, and send the adjustment parameters to the hot air guiding module. The hot air guiding module is used to respond to the adjustment parameters and output the hot air based on the target position and target angle corresponding to the adjustment parameters to heat the edge of the strip.

2. The apparatus according to claim 1, characterized in that, The determination of the adjustment parameters of the hot air guiding module based on the strip data of the strip to be cut includes: Obtain the strip data; Based on the strip data, the lateral displacement parameters, height displacement parameters, and angular displacement parameters of the hot air guiding module are determined. The adjustment parameters include the lateral displacement parameters, the height displacement parameters, and the angular displacement parameters. The lateral displacement parameters and the height displacement parameters are used to control the hot air guiding module to output the hot air at the target position, and the angular displacement parameters are used to control the hot air guiding module to output the hot air at the target angle.

3. The apparatus according to claim 2, characterized in that, The determination of the lateral displacement parameters of the hot air guiding module based on the strip data includes: Obtain the initial span of the hot air guiding module; The edge bite amount is determined based on the amount of the strip cut. The target span of the hot air guide module is determined based on the strip width and the edge bite amount. Calculate the difference between the initial span and the target span, wherein the strip data includes the trimming amount and the strip width; If the difference is greater than 0, the difference is determined as a displacement numerical parameter, and the direction of the hot air generating module is determined as a displacement direction parameter to obtain the lateral displacement parameter, wherein the lateral displacement parameter includes the displacement numerical parameter and the displacement direction parameter; If the difference is less than 0, the difference is determined as the displacement numerical parameter, and the opposite direction of the hot air generation module is determined as the displacement direction parameter; If the difference is equal to 0, the lateral displacement parameter is set to zero.

4. The apparatus according to claim 1, characterized in that, The hot air guiding module includes a support unit and a hot air guiding unit, wherein the hot air guiding module is connected to the hot air generating module, and the support unit is deployed between the hot air guiding module and the ground; The support unit is used to control the hot air guide unit to output the hot air at the target position based on the adjustment parameters; The hot air guiding unit is used to obtain the hot air from the hot air generating module and output the hot air at the target angle based on the adjustment parameters.

5. The apparatus according to claim 4, characterized in that, The hot air guiding unit includes a second air inlet, a wind box body, a second air outlet, and a third air outlet. The second air inlet connects the hot air generating module and the wind box body. The wind box body has a C-shaped structure. The second air outlet and the third air outlet are respectively deployed in parallel on two branches of the wind box body. The second air inlet is used to obtain hot air from the hot air generation module; The main body of the air box is used to split the hot air into a first hot air at a first angle and a second hot air at a second angle based on the adjustment parameters, and to transmit the first hot air to the second air outlet and the second hot air to the third air outlet, wherein the target angle includes the first angle and the second angle; The second air outlet is used to output the first hot air; The third air outlet is used to output the second hot air.

6. The apparatus according to claim 5, characterized in that, Based on the strip data, the height displacement parameters and angle displacement parameters of the hot air guide module are determined, including: The relative positional relationship between the strip and the main body of the air box is detected based on the strip wave height and strip thickness. The strip data includes the strip wave height and strip thickness. The relative positional relationship is used to indicate whether the strip is higher than the second air outlet or whether the strip is lower than the third air outlet. If the strip is higher than the second air outlet, or if the strip is lower than the third air outlet, the height displacement parameter is determined based on a first distance that the strip exceeds the second air outlet or the third air outlet, and the angle displacement parameter is determined based on the first distance. If the strip is not higher than the second air outlet and the strip is not lower than the third air outlet, the angular displacement parameter is determined based on the second distance between the strip and the second air outlet.

7. The apparatus according to claim 5, characterized in that, The main body of the air box includes a baffle plate, a first air duct and a second air duct, wherein the baffle plate is deployed at the connection position between the second air inlet and the main body of the air box, the second air outlet is deployed on the first air duct, and the third air outlet is deployed on the second air duct. The spoiler is used to split the hot air into the first hot air and the second hot air by adjusting it to the angle corresponding to the angle displacement parameter, wherein the adjustment parameter includes the angle displacement parameter; The first air duct is used to transmit the first hot air to the second air outlet; The second air duct is used to transmit the second hot air to the third air outlet.

8. The apparatus according to claim 4, characterized in that, The support unit includes a support device, a horizontal adjustment device, and a height adjustment device, wherein the support device is deployed below the hot air guiding unit, the height adjustment device is deployed below the support device, and the horizontal adjustment device is deployed to the side of the support device; The horizontal adjustment device is used to adjust the support device to the horizontal position corresponding to the lateral displacement parameter; The height adjustment device is used to adjust the support device to the height position corresponding to the height displacement parameter, wherein the adjustment parameter includes the lateral displacement parameter and the height displacement parameter, and the target position includes the horizontal position and the height position.

9. The apparatus according to claim 1, characterized in that, The hot air generating module includes a heating unit and a connecting unit, wherein the heating unit is connected to the hot air guiding module through the connecting unit; The heating unit is used to heat the collected air to the target temperature and input the hot air to the connection unit at the target wind speed; The connection unit is used to transmit the hot air to the hot air guiding module.

10. The apparatus according to claim 9, characterized in that, The heating unit includes a first air inlet, a heating element, and a first air outlet, wherein the first air outlet is connected to the connecting unit; The first air inlet is used to acquire the air at the initial temperature and initial wind speed; The heating element is used to heat the air from the initial temperature to the target temperature; The first air outlet is used to convert the air from the initial wind speed to the target wind speed through convection heat exchange to obtain the target temperature and the hot air at the target wind speed, and output the hot air to the connection unit.

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