Conveying compensation method for oriented silicon steel plate strip

Abstract

The invention discloses a conveying compensation method for an oriented silicon steel plate strip. The conveying compensation method comprises the steps of joint length value obtaining, welding time measuring and calculating, speed adjusting and the like. The welding time between two pieces of oriented silicon steel with different width specifications is obtained through feedback interaction of the detection module and the control system, the speed of the middle section conveying mechanism and the speed of the plate and strip conveying mechanism are adjusted according to the welding time, the phenomenon that the oriented silicon steel plate and strip is excessively loosened or the conveying allowance of the plate and strip is insufficient during welding is avoided, and the welding quality of the oriented silicon steel plate and strip is improved. And the production efficiency and the product quality of the oriented silicon steel are ensured.

Description

Technical Field

[0001] The invention relates to the field of plate and strip grinding, and in particular to a conveying compensation method for oriented silicon steel plate and strip. Background Art

[0002] Oriented silicon steel sheets are indispensable materials in the manufacture of transformers or inductors. When making oriented silicon steel, the oriented silicon steel coils that have not been normalized need to be uncoiled and sent into a normalizing furnace by a conveying mechanism for treatment to ensure the growth of grains in the corresponding orientation, improve the microstructure of the oriented silicon steel, and enhance the magnetic properties of the oriented silicon steel sheets; then the oriented silicon steel sheets and strips are descaled, cleaned, and coiled.

[0003] The oriented silicon steel strips that have not been normalized are usually wound and set on an uncoiling mechanism. In order to save the downtime and complete the processing of multiple oriented silicon steel coils at one time, the applicant sets up multiple uncoiling mechanisms and sets up strip welding equipment between the normalizing furnace and the uncoiling mechanism. The welding equipment has a welder that moves along the strip welding path; when the tail end of the oriented silicon steel strip on one of the uncoiling mechanisms enters the strip welding equipment, the oriented silicon steel strip on the next uncoiling mechanism also starts to be conveyed, and its head end will enter the strip welding equipment, and after being aligned with the tail end of the previous oriented silicon steel strip, it is welded by the moving welder.

[0004] An initial conveying mechanism is provided between the uncoiling mechanism and the plate and strip welding equipment, and a middle conveying mechanism is provided between the normalizing furnace and the plate and strip welding equipment. When the two oriented silicon steel plates and strips are not welded, the conveying speeds of the two conveying mechanisms are the same; when the two oriented silicon steel plates and strips are welded, the initial conveying mechanism stops working, and the middle conveying mechanism needs to continue working to avoid the oriented silicon steel plates and strips from stagnating in the normalizing furnace. In order to prevent the welded part of the plates and strips from being pulled by the middle conveying mechanism, the applicant has set up a translatable plate and strip adjustment mechanism between the plate and strip welding equipment and the normalizing furnace. The plate and strip adjustment mechanism is provided with a rotating roller, and the oriented silicon steel plate is wound around the rotating roller along a U-shaped path; when the plates and strips are welded, the plate and strip adjustment mechanism translates and relaxes the plates and strips to form a conveying margin, and the conveying margin can be synchronously conveyed to the normalizing furnace by the middle conveying mechanism.

[0005] However, the width specifications of different plates and strips are different. When the width specifications change, the welding length of the plates and strips will also change. Therefore, the welding time of plates and strips with different specifications is also different, and the plate and strip margins formed by their own movement are also different, which will cause various problems. For example, when the welding time is long, the required plate and strip margin increases, but the maximum moving stroke of the plate and strip adjustment mechanism is limited, and it cannot provide sufficient plate and strip release length, which may cause the plate and strip tension to increase or even break; when the welding time is short, the required plate and strip margin decreases. If the plate and strip adjustment mechanism still moves at the original speed and time, the plate and strip will relax excessively.

[0006] Therefore, it is necessary to provide a conveying compensation method for oriented silicon steel strips to adaptively adjust the working parameters of the strip adjustment mechanism or the corresponding conveying mechanism according to the width of the oriented silicon steel strips of different widths to ensure the production efficiency and product quality of oriented silicon steel. Summary of the Invention

[0007] The present invention provides a conveying compensation method for oriented silicon steel strips. By means of feedback interaction between a detection module and a control system, the welding time between two oriented silicon steels of different widths is obtained, and the speed of a mid-section conveying mechanism and a strip conveying mechanism are adjusted according to the welding time. This avoids excessive relaxation of the oriented silicon steel strips during welding or insufficient strip conveying margin, thereby ensuring the production efficiency and product quality of the oriented silicon steel.

[0008] The technical solution of the present invention is achieved as follows: A conveying compensation method for oriented silicon steel strip comprises the following steps: S1: Obtaining the joint length value; the detection module measures and feeds back the joint length value between the two oriented silicon steel strips to be welded to the control system; S2: Calculating welding time; the control system calculates the welding time of the two oriented silicon steel strips based on the seam length value and the activity speed of the welder in the welding equipment 4; S3: Speed ​​adjustment; the control system adjusts the moving speed of the strip adjustment mechanism or the conveying speed of the middle conveying mechanism according to the welding time, so that the strip excess formed when the strip adjustment mechanism moves horizontally in a predetermined direction within the moving stroke will be synchronously conveyed to the normalizing furnace through the middle conveying mechanism.

[0009] Preferably, the conveying speed of the middle conveying mechanism is V1; the plate and strip adjustment mechanism includes a movable seat and n rotating rollers rotatably disposed on the movable seat, the maximum movable stroke value of the movable seat is A, and A is pre-stored in the control system; in step S3, the control system first calculates the required strip margin value C within the welding time, C=V1*t; then performs parameter comparison and determines the relationship between C / 2n and A, where C / 2n is the moving distance of the movable seat; if C / 2n≤A, proceed to step S3a; S3a: Adjust the moving speed of the strip adjustment mechanism to V, V=V1 / 2n; If C / 2n>A, proceed to step S3b; S3b: Reduce the conveying speed of the middle conveying mechanism to V2, and ensure that V2*t / 2n≤A; and synchronously adjust the moving speed of the strip adjustment mechanism to V, V=V2 / 2n.

[0010] Preferably, the value of n is 1; the oriented silicon steel strip is wrapped around a single rotating roller along a U-shaped path; while ensuring the formation of the strip margin, the center of gravity of the oriented silicon steel strip on the strip adjustment mechanism is prevented from being too high.

[0011] Preferably, the oriented silicon steel strip is transported to the welding equipment by the front-end conveying mechanism. When two oriented silicon steel strips are welded, the front-end conveying mechanism stops working; if C / 2n≤A, and after step S3a is executed, then enter step S4a; S4a: reset; the front-end conveying mechanism enters the working state from the stopped state, and the control system adjusts the conveying speed of the front-end conveying mechanism to V3, V3>V1; the transportation speed of the middle-section conveying mechanism is still maintained at V1, and at the same time, the strip adjustment mechanism is moved in the opposite direction to the initial position at a speed of V4, V4=(V3-V1) / 2n.

[0012] Preferably, in step S4a, when the strip adjustment mechanism moves in the reverse direction to the initial position, the control system adjusts the conveying speed of the front conveying mechanism from V3 to V1; so that the middle conveying mechanism and the front conveying mechanism maintain the same conveying speed. Preferably, the oriented silicon steel strip is transported to the welding equipment by the front-end conveying mechanism. When two oriented silicon steel strips are welded, the front-end conveying mechanism stops working; if C / 2n>A, and after step S3b is executed, enter step S4b; S4b: reset; the front-end conveying mechanism enters the working state from the stopped state, and the control system adjusts the conveying speed of the front-end conveying mechanism to V1, and the transportation speed of the middle-section conveying mechanism remains at V2; at the same time, the strip adjustment mechanism moves in the opposite direction to the initial position at a speed of V5, V5=(V1-V2) / 2n.

[0013] Preferably, in step S4b, when the strip adjustment mechanism moves in the reverse direction to the initial position, the control system adjusts the conveying speed of the middle conveying mechanism from V2 to V1, so that the middle conveying mechanism and the front conveying mechanism maintain the same conveying speed.

[0014] Preferably, in step S1, the detection module includes a camera electrically connected to the control system, the camera captures an image of a joint between two oriented silicon steel strips to be welded, and calculates the joint length value based on the image.

[0015] Preferably, in step S1, the detection module obtains a seam length value s; in step S2, the welding machine is set on a movable seat, and the movable seat moves at a constant speed d along the extension path of the weld; in step S3, the control system calculates the welding time t based on the values ​​of s and d, t=s / d.

[0016] The beneficial effects of the present invention using the above technical solution are: The present invention obtains the seam length value of two oriented silicon steel strips of corresponding widths through feedback from the detection module and the control system, and then obtains the welding time between two oriented silicon steel strips of corresponding width specifications based on the length value and the moving speed parameter of the welding machine. The speed of the middle conveying mechanism and the strip conveying mechanism is adjusted according to the welding time, so as to avoid excessive relaxation of the oriented silicon steel strips or insufficient strip conveying margin during welding, thereby ensuring the production efficiency and product quality of the oriented silicon steel.

[0017] After the welding of two oriented silicon steel strips is completed, the control system can also adjust the conveying speed of the strip conveying mechanism and the moving speed of the strip adjustment mechanism again, so that the oriented silicon steel strip is conveyed forward while the strip adjustment mechanism is reset to its initial position, so that when two oriented silicon steels of the next width specification are welded, the conveying speed of the strip conveying mechanism and the strip adjustment mechanism can be adjusted again. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the layout of the acid-free descaling device; Figure 2 This is a schematic diagram of the front section of the acid-free descaling device; Figure 3 This is a schematic diagram of the middle section of the acid-free descaling device; Figure 4 This is a schematic diagram of the rear section of the acid-free descaling device; Figure 5 This is a schematic diagram of the detection assembly and brush roller assembly at the brush descaling mechanism; Figure 6 Schematic diagram of impact particles ejected toward a grain-oriented silicon steel strip to break up silicon oxides; Figure 7 This is a schematic diagram of a welding machine moving along the length direction of the joint of two oriented silicon steel strips and performing welding; Figure 8 A structural cross-sectional view of the test component; Figure 9 This is a diagram of the connection structure between the rotating brush roller and the lifting seat; Figure 10 Schematic diagram of cutting the uncoiled oriented silicon steel strip; Figure 11 This is an enlarged view of the connection components between the upper and lower layers of heat treatment modules; Figure 12 The figure is a schematic diagram showing the changes in the moving speed of the moving seat and the speed of the middle conveying mechanism when the conveying margin of the oriented silicon steel strip is less than or equal to the movable stroke of the moving seat; Figure 13 Schematic diagram of the change in the moving speed of the moving seat and the speed of the middle conveying mechanism when the conveying margin of the oriented silicon steel strip is greater than the movable stroke of the moving seat; Figure 14 Schematic diagram of the rotary cutting wheel in the cutting mechanism cutting the burrs on both sides of the oriented silicon steel strip; Figure 15 It is a structural diagram of the strip adjustment mechanism; Figure 16 It is a flowchart of the steps of the present invention; The figures are marked as follows: 1-unwinding mechanism, 2-front section strip conveying mechanism, 2a-middle section strip conveying mechanism, 2c-guide roller assembly, 3-tensioning mechanism, 4-welding equipment, 5-strip adjustment mechanism, 5a-second strip adjustment mechanism, 5b-movable seat, 5c-rotating roller, 6-grinding brush descaling mechanism, 6a-rotating brush roller, 7-particle impact descaling mechanism, 8-cleaning mechanism, 9-winding mechanism, 21-steering roller, 22-straightening mechanism, 23-head cutting mechanism, 31-double roller correction mechanism, 41-welding machine, 51-normalizing heat treatment mechanism, 52-seal, 53-support platform, 54-sealing pipe, 61-coarse grinding brush roller, 62- Semi-finishing brush roller, 63-finishing brush roller, 64-mounting seat, 65-lifting seat, 66-driving motor, 67-base, 71-impact particles, 81-drying mechanism, 91-cutting mechanism, 511-preheating section, 512-oxygen-free furnace heating section, 513-radiant tube heating section, 521-first tube cooling section, 522-heating section, 523-second tube cooling section, 524-mist cooling section, 525-air cooling section, 526-water cooling section, 527-drying section, 231-movable cutter, 611-power motor, 641-telescopic part, 642-compression spring, 643-detection element, 661-screw, 662-nut, 911-rotating cutting wheel. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] The specific implementation of the present invention is as follows: like Figure 1-16As shown, this embodiment provides a conveying compensation method for grain-oriented silicon steel strips. The conveying compensation method is applied to an acid-free descaling device. For ease of illustration, the acid-free descaling device is divided into a front section, a middle section, and a rear section in the accompanying drawings of the specification. The acid-free descaling device includes the following components arranged in sequence along the traveling direction of the grain-oriented silicon steel strips: The unwinding mechanism 1 is used to wind the oriented silicon steel strip that has not been normalized and heat treated. The unwinding mechanism 1 is an existing mechanism and its specific structure will not be described in detail. A cutting mechanism 23 is provided adjacent to the unwinding mechanism 1. Figure 10 As shown, a movable cutter 231 is provided inside the head cutting mechanism 23. After the oriented silicon steel strip is uncoiled, its head end enters the head cutting mechanism 23, and the movable cutter 231 cuts off the burrs at the head end of the oriented silicon steel strip. The strip conveying mechanism is used to convey the oriented silicon steel strip. The strip conveying mechanism is usually a common pinch roller conveying mechanism, that is, the oriented silicon steel strip is pinched and conveyed by two rotating rollers facing each other. The normalizing heat treatment mechanism 51 includes a heating section and a cooling section arranged in sequence along the traveling direction of the oriented silicon steel strip; the heating section is connected to the cooling section; The brush descaling mechanism 6 includes a plurality of brush roller assemblies arranged in sequence along the traveling direction of the oriented silicon steel strip, each brush roller assembly includes two rotating brush rollers 6a facing each other up and down, and the rotating brush rollers 6a rotate to brush away the oxide scale attached to the surface of the oriented silicon steel strip after normalizing heat treatment; The winding mechanism 9 is used to wind and collect the descaled oriented silicon steel strip; the winding mechanism 9 is provided with a winding roller, which is fixed to the end of the oriented silicon steel strip and then rotated to allow the oriented silicon steel strip to be wound into a steel coil after descaling.

[0022] Further, if Figure 5 、 Figure 9As shown, the roller shaft of the rotating brush roller 6a is connected to a power motor 611 for transmission. Driven by the power motor 611, the brush roller 6a rotates along its own axis, and while meeting the travel of the oriented silicon steel strip, the oxidized scales on the surface of the oriented silicon steel strip are removed; the rotating brush roller 6a includes a roller body and brush strips densely arranged outside the rotating roller body; along the travel direction of the oriented silicon steel strip, the density of the brush strips on the rotating brush roller 6a in the rear brush roller assembly is greater than the density of the brush strips on the rotating brush roller 6a in the front brush roller assembly. The number of brush roller groups can be adjusted according to the grinding effect. In this embodiment, three brush roller groups are set for explanation; the rotating brush rollers 6a on the three brush roller groups are Along the moving direction of the oriented silicon steel strip, it can be divided into coarse grinding brush roller 61, semi-finishing grinding brush roller 62, and fine grinding brush roller 63 in sequence. When the oriented silicon steel strip moves to the coarse grinding brush roller 61, the coarse grinding brush roller 61 will grind away the loose metal oxide scales. When it continues to move to the semi-finishing grinding brush roller 62, the brush bars on the semi-finishing grinding brush roller 62 are relatively dense, which can remove the remaining relatively dense metal oxide scales. After that, when it moves to the fine grinding brush roller 63, the brush bars on the fine grinding brush roller 63 are even denser, which can remove the remaining metal oxide scales. This design enables multiple brush roller groups to form a progressive grinding on the surface of the oriented silicon steel strip to ensure the descaling effect.

[0023] Furthermore, oriented silicon steel contains silicon elements. After normalizing heat treatment, the oxide scales formed on its surface are mainly composed of metal oxides and silicon oxides. The grinding and brushing descaling mechanism can remove most of the metal oxides, but the hardness of silicon oxides is relatively high and it is difficult to be removed by the rotating brush roller. Therefore, a particle impact descaling mechanism 7 is provided between the grinding and brushing descaling mechanism 6 and the winding mechanism 9. The particle impact descaling mechanism is also called a shot blasting machine. Figure 6 As shown, dense impact particles 71 can be sprayed inside it. In this embodiment, it is creatively used for descaling to crush and remove silicon oxide attachments on the surface of the oriented silicon steel plate and strip; to prevent silicon oxide attachments that are difficult to remove with the inner brush roller from remaining on the surface of the oriented silicon steel plate and strip.

[0024] Further, if Figure 2 As shown, if a single winding mechanism is used, when all the oriented silicon steel strips on the winding mechanism 1 are descaled, the next oriented silicon steel strip that has not been normalized heat treated needs to be installed on the winding mechanism 1. During this period, the acid-free descaling device needs to be shut down. Therefore, in this embodiment, there are multiple unwinding mechanisms 1. At the same time, in order to save downtime, a welding device 4 is provided between the multiple unwinding mechanisms 1 and the normalizing heat treatment mechanism 51. The welding device 4 is an argon arc welding mechanism, as shown in FIG. Figure 7As shown, a movable welder 41 is provided in the welding equipment 4; when the tail end of the previous oriented silicon steel strip enters the welding equipment 4, the head end of the next oriented silicon steel strip enters the welding equipment 4 synchronously, so that the welder 41 moves and welds the two oriented silicon steel strips together; the placement process of the oriented silicon steel strip is omitted, the acid-free descaling device is avoided from being shut down, and the strips on multiple unwinding mechanisms 1 are finally collected into one roll, thereby improving the descaling efficiency.

[0025] Furthermore, the strip conveying mechanism includes a front-end conveying mechanism 2 arranged between each unwinding mechanism 1 and the welding device 4, and a middle-end conveying mechanism 2a arranged between the welding device 4 and the normalizing heat treatment mechanism 51. Both of them are of a pinch roller type structure, and the pinch roller type structure includes two rotating pinch rollers; the rear position mainly relies on the winding action of the winding mechanism 9 to pull the oriented silicon steel strip forward, and a guide roller assembly 2c is also provided near the winding mechanism 9. The guide roller assembly 2c includes two rotating guide rollers arranged up and down, which play a steering guide role and can also prevent the strip from moving up and down; the welding device 4 and the middle-end conveying mechanism 2a are provided with a strip adjustment mechanism 5, such as Figure 15 As shown, the plate and strip adjustment mechanism 5 includes a movable seat 5b and a rotating roller 5c rotatably arranged on the movable seat, and the oriented silicon steel plate and strip are arranged around the rotating roller 5c along a U-shaped path; when two oriented silicon steel strips are welded, the front-section conveying mechanism 2 stops working, the movable seat 5b moves and relaxes the oriented silicon steel strip to form a first conveying margin, and the middle-section conveying mechanism 2a continues to work and conveys the first conveying margin to the normalizing heat treatment mechanism 51; so that the two oriented silicon steel strips remain fixed during welding, and at the same time, the oriented silicon steel strips are prevented from stagnating partially when entering the normalizing heat treatment mechanism, and the middle-section plate and strip conveying mechanism 2a is prevented from pulling the welded plate and strip part.

[0026] Furthermore, when two oriented silicon steel strips are welded, the butt weld seam mainly extends along the width direction of the oriented silicon steel strips. When the width specification of the oriented silicon steel strip to be descaled changes, the conveying margin length of the first strip will also change. Under the premise that the moving speed of the welding machine 41 does not change, the oriented silicon steel strip with a wider width requires a longer welding time. Therefore, in order to adapt to the change in the conveying margin of the first strip caused by the change in the width of the oriented silicon steel strip, the present invention provides a conveying compensation method, which includes the following steps: S1: Obtaining the seam length value; the detection module measures and feeds back the seam length value between the two oriented silicon steel strips to be welded to the control system; the control system is equivalent to a master controller (not shown); S2: Calculating welding time; the control system calculates the welding time of the two oriented silicon steel strips based on the seam length value and the activity speed of the welder 41 in the welding equipment 4; S3: Speed ​​adjustment; the control system adjusts the moving speed of the plate and strip adjusting mechanism 5 or the conveying speed of the middle conveying mechanism 2a according to the welding time, so that the plate and strip excess formed when the plate and strip adjusting mechanism 5 translates in a predetermined direction within the moving stroke will be synchronously conveyed to the normalizing furnace through the middle conveying mechanism 2a, wherein the control system adjusts the moving speed of the plate and strip adjusting mechanism 5 by electrically connecting the control system with the electrical drive component (the drive component can be an electrically controlled motor) that drives the movable movable seat 5b, and the control system adjusts the conveying speed of the middle conveying mechanism 2a by electrically connecting the electrical drive component (the drive component can be an electrically controlled motor) that drives the clamping roller to rotate.

[0027] Furthermore, the speed adjustment process varies according to the welding time. Specifically, Figure 12-13 As shown, the conveying speed value of the middle conveying mechanism 2a is V1; the plate strip adjustment mechanism 5 includes a movable seat and n rotating rollers rotatably arranged on the movable seat, and the maximum moving stroke value of the movable seat is A, which is pre-stored in the control system; in step S3, the control system first calculates the required margin value C of the plate strip within the welding time, C=V1*t; then performs parameter comparison and determines the relationship between C / 2n and A, where C / 2n is the moving distance of the movable seat; the comparison of the sizes of C / 2 and A is because the oriented silicon steel plate strip is wrapped around the rotating roller 5c along a U shape, so when the movable seat 5b moves a certain distance and releases the oriented silicon steel plate strip, the plate strip parts at the upper and lower ends of the rotating roller 5c will be released, so the first conveying margin of the oriented silicon steel plate strip is 2n times the moving distance of the movable seat 5b; if C / 2n≤A, it means that the moving distance of the movable seat 5b will not exceed its maximum stroke within the welding time t, and then step S3a is performed; S3a: Adjust the moving speed value of the strip adjustment mechanism 5 to V, V=V1 / 2n; to ensure that when the movable seat 5b moves a distance of V1*t / 2n, a first strip conveying margin of length V1*t is formed; If C / 2n>A, it means that the moving distance of the movable seat 5b exceeds its maximum travel within the welding time t, and then proceed to step S3b; S3b: Reduce the conveying speed of the middle conveying mechanism 2a to V2, and ensure that V2*t / 2n≤A; and synchronously adjust the moving speed of the plate and strip adjustment mechanism 5 to V, V=V2 / 2n; avoid the moving seat 5b exceeding the maximum stroke A within the corresponding welding time t; and synchronously adjust the moving speed of the plate and strip adjustment mechanism 5 to V, V=V2 / 2n, to form a first plate and strip conveying margin with a length of V2*t.

[0028] Furthermore, in this embodiment, the value of n is 1; the oriented silicon steel strip is wrapped around a single rotating roller along a U-shaped path; while ensuring the formation of the strip margin, the center of gravity of the oriented silicon steel strip on the strip adjustment mechanism 5 is prevented from being too high.

[0029] Furthermore, the oriented silicon steel strip is transported by the front-end conveying mechanism 2 to the welding equipment 4. When the two oriented silicon steel strips are welded, the strip adjustment mechanism 5 is reset to facilitate movement again when the next width specification oriented silicon steel strip is welded. At this time, the front-end conveying mechanism 2 enters the working state from the stopped state. Similarly, according to different welding times t, it is necessary to adjust the speed of the first strip conveying mechanism 5 and the front-end conveying mechanism 2. If C / 2n≤A, and after step S3a is executed, step S4a is entered; S4a: reset; the front-end conveying mechanism 2 enters the working state from the stopped state, and the control system adjusts the conveying speed of the front-end conveying mechanism 2 to V3, V3>V1; the transportation speed of the middle-end conveying mechanism 2a is still maintained at V1 to ensure that a conveying speed difference is formed between the front-end conveying mechanism 2 and the middle-end conveying mechanism 2a, and at the same time, the strip adjustment mechanism 5 is moved in the opposite direction to the initial position at a speed V4, V4=(V3-V1) / 2n, to form the strip margin required for reset.

[0030] Furthermore, after welding is completed, the oriented silicon steel strip continues to be conveyed. In step S4a, when the strip adjustment mechanism 5 moves back to the initial position, the control system adjusts the conveying speed of the front conveying mechanism 2 from V3 to V1; so that the middle conveying mechanism 2a maintains the same conveying speed as the front conveying mechanism 2, avoiding deformation of the oriented silicon steel strip due to inconsistent conveying speeds at the front and rear.

[0031] Furthermore, when the welding of two oriented silicon steel strips is completed, the strip adjustment mechanism 5 is reset so that it can be moved again when the next width specification oriented silicon steel strips are welded; the oriented silicon steel strips are transported to the welding equipment 4 by the front-end conveying mechanism 2, and when the two oriented silicon steel strips are welded, the front-end conveying mechanism 2 stops working; if C / 2n>A, and after step S3b is executed, enter step S4b; S4b: reset; the front-end conveying mechanism 2 enters the working state from the stopped state, and the control system adjusts the conveying speed of the front-end conveying mechanism 2 to V1, and the transportation speed of the middle-section conveying mechanism 2a remains at V2; at the same time, the strip adjustment mechanism 5 moves in the opposite direction to the initial position at a speed V5, V5=(V1-V2) / 2n.

[0032] Furthermore, after welding is completed, the oriented silicon steel strip continues to be conveyed. In step S4b, when the strip adjustment mechanism 5 moves back to the initial position, the control system adjusts the conveying speed of the middle conveying mechanism 2a from V2 to V1; so that the middle conveying mechanism 2a maintains the same conveying speed as the front conveying mechanism 2, avoiding deformation of the oriented silicon steel strip due to inconsistent conveying speeds at the front and rear.

[0033] Furthermore, in order to efficiently obtain the seam length value between two oriented silicon steel strips, in step S1, the detection module includes a camera (not shown) electrically connected to the control system, and the camera is an industrial camera with image capture and analysis functions; the camera captures the seam image between the two oriented silicon steel strips to be welded, and calculates the seam length value based on the image, and then feeds the seam length value back to the control system.

[0034] Furthermore, the process of the control system obtaining the welding time is as follows: in step S1, the detection module obtains the seam length value s; in step S2, the welding machine 41 is set on a moving base, and the moving base moves at a constant speed d along the extension path of the weld; in step S3, the control system calculates the welding time t based on the values ​​of s and d, t=s / d.

[0035] Furthermore, a finishing mechanism is provided between the particle impact descaling mechanism 7 and the winding mechanism 9. The finishing mechanism includes a cleaning component 8 and a drying component 81 arranged in sequence along the traveling direction of the oriented silicon steel strip. The cleaning component 8 is a water jet machine, which can spray water to remove the oxidized scales remaining on the oriented silicon steel strip. The water jet machine is also provided with a continuously rotating brush roller (not shown). The outer wall of the brush roller has dense cleaning soft bristles to clean the residual oxidized scales on the surface of the oriented silicon steel strip; the drying component 81 is a hot air dryer, which can blow hot air to the cleaned oriented silicon steel strip and dry the surface of the oriented silicon steel strip; so that no scales will remain on the surface of the oriented silicon steel strip, ensuring its use quality.

[0036] Furthermore, in order to ensure that the oriented silicon steel strip is finished in place after descaling and to avoid impurities or dirt adhering to its surface, the travel speed of the oriented silicon steel at the finishing mechanism is lower than the travel speed at the winding mechanism 9, thereby providing sufficient time for the finishing of the oriented silicon steel strip; to achieve this speed difference, a second strip adjustment mechanism 5a is provided between the finishing mechanism and the winding mechanism 9. The second strip adjustment mechanism 5a has a similar structure to the strip adjustment mechanism 5. The second strip adjustment mechanism 5a includes a second movable seat and a second rotating roller rotatably arranged on the movable seat. The oriented silicon steel strip is arranged on the second rotating roller along a U-shaped path. The second movable seat moves and relaxes the oriented silicon steel strip to form a second conveying margin wound onto the winding mechanism 9; so that the oriented silicon steel strip has sufficient finishing time to ensure that the surface of the oriented silicon steel strip is finished in place.

[0037] Furthermore, the surface of the oriented silicon steel strip after normalizing heat treatment has a high surface roughness due to the presence of oxide scales, and the surface roughness varies. When the roughness is too large and exceeds the predetermined value, it is difficult to completely remove the oxide scales on the surface by rotating the brush roller 6a. Therefore, in order to improve the brushing effect, Figure 8As shown, the brush roller assembly in this embodiment is arranged on a lifting seat 65, and the lifting seat 65 is driven to rise and fall by the driving assembly; the acid-free descaling device also includes a second controller (not shown) between the grinding brush descaling mechanism 6 and the normalizing heat treatment mechanism 51, and a detection assembly, and the detection assembly can be arranged above or below the oriented silicon steel strip; the detection assembly includes a mounting seat 64 and a telescopic member 641 connected to the mounting seat 64 along the longitudinal sliding direction, and the telescopic member 641 can be elastically extended and retracted along the longitudinal direction on the mounting seat 64; the telescopic member 641 is used to contact the surface of the strip; the mounting seat 64 is also provided with a telescopic member The detection element 643 corresponding to the position 641 is an infrared sensor; the detection element 643 can detect the telescopic length of the telescopic part 641; the second controller is electrically connected to the drive component and the detection element 643; the telescopic part 641 is telescoped in the longitudinal direction after contacting the surface of the plate strip, and when the detection element 643 detects that the telescopic length of the telescopic part 641 exceeds a predetermined value, a signal is sent to the second controller, and the second controller controls the lifting seat 65 and the brush roller to approach the surface of the oriented silicon steel plate strip through the drive component according to the signal, so as to adjust the friction force of the brush roller on the oriented silicon steel plate strip to the right position.

[0038] Furthermore, an elastic member is provided on the mounting seat 64, and the elastic member acts on the telescopic member 641, so that the telescopic member 641 elastically expands and contracts longitudinally on the mounting seat 64; in order to save layout space, the mounting seat 64 is a sleeve, the telescopic member 641 is a telescopic rod slidably connected in the sleeve, and the elastic member is a compression spring 642 arranged in the sleeve.

[0039] Furthermore, the setting structure of the detection element 643 is as follows: a accommodating groove is provided on the inner wall of the sleeve corresponding to the position of the telescopic member 641, and the detection member is located in the accommodating groove. At the same time, in order to facilitate the insertion of electrical wires, an escape opening is provided in the accommodating groove to pass through outward to avoid the electrical wires.

[0040] Furthermore, the electrical connection between the second controller and the drive assembly means that: the drive assembly includes a drive motor 66 and a screw rod 661, and the drive motor 66 is installed on a base 67; the second controller is electrically connected to the drive motor 66; a nut 662 is provided on the lifting seat 65, and the screw rod 661 is spirally matched with the nut 662; the drive motor 66 can drive the screw rod 661 to rotate to control the lifting seat 65 and the brush roller 6a to approach the plate belt.

[0041] Furthermore, the telescopic length of the telescopic member 641 is directly proportional to the roughness of the surface of the oriented silicon steel strip, that is, the rougher the surface of the oriented silicon steel strip, the greater the telescopic length produced after the telescopic member 641 is released. Taking into account the range of variation in the roughness of the surface of the oriented silicon steel strip, the telescopic length range of the telescopic member 641 in this embodiment is limited to 1mm-3mm.

[0042] Furthermore, the movable length range of the lifting seat 65 and the rotating brush roller 6a along the longitudinal direction needs to be within a reasonable range. If the movable range is too small, the rotating brush roller 6a may not easily contact the surface of the oriented silicon steel strip. If the movable range is too large, the rotating brush roller 6a may drop excessively and contact the surface of the oriented silicon steel strip too closely, which may not only make the rotating brush roller 6a rotate poorly, but also affect the grinding effect. Therefore, the movable length range of the lifting seat 65 and the rotating brush roller 6a along the longitudinal direction is 5mm-30mm.

[0043] Furthermore, the normalizing heat treatment mechanism 51 and the grinding and brushing descaling mechanism 6 occupy a large space. If they are arranged in an ordinary assembly line style, they will occupy a large space in the processing workshop. Therefore, in order to save space, the acid-free descaling device also includes a support frame, which is fixed to the ground by multiple legs; the support frame has a support platform 53 separated from the ground, and the area at the top of the support platform 53 is a high-position installation area, and a low-position installation area is formed between the lower end of the support platform 53 and the ground. The normalizing heat treatment mechanism 51 is arranged in the high-position installation area, and the grinding and brushing descaling mechanism 6 is arranged in the low-position installation area; the oriented silicon steel sheet can first move upward and enter the normalizing heat treatment mechanism 51 to complete the normalizing heat treatment, and then bend downward to enter the grinding and brushing descaling mechanism 6 for physical grinding and descaling, thereby saving layout space and improving the structural compactness of the acid-free descaling device.

[0044] Furthermore, in order to further save space, the normalizing heat treatment mechanism 51 includes a plurality of heat treatment modules, and the plurality of heat treatment modules are arranged in two layers, and the upper and lower layers can both be called heat treatment layers; the plurality of heat treatment modules include a plurality of heating modules arranged in sequence and a plurality of cooling modules arranged in sequence, and the plurality of heating modules constitute the heating section, and the plurality of cooling modules constitute the cooling section, and the heating section is connected to the cooling section; between the upper and lower heat treatment layers, the heating section includes a preheating section 511, an oxygen-free furnace heating section 512, and a radiation tube heating section 513 arranged in sequence along the traveling direction of the oriented silicon steel strip, and the oriented silicon steel strip is heated to about 400°C within 40 seconds when passing through the preheating section 511, and then travels to the oxygen-free furnace heating section 512 and the radiation tube heating section 513 in sequence and is heated to about 1200°C within 70 seconds, completing the heating Treatment; The cooling section includes a first cooling section 521, a soaking section 522, a second cooling section 523, a mist cooling section 524, an air cooling section 525, and a water cooling section 526, which are arranged in sequence along the traveling direction of the oriented silicon steel strip. After passing through the water cooling section 526, a drying section 527 is further provided to dry the water vapor on the surface of the oriented silicon steel; when the oriented silicon steel strip passes through the first cooling section 521, the temperature drops to about 900°C within 40 seconds, and then maintains a temperature of 900°C for about 5 seconds when passing through the soaking section 522, and then passes through the second cooling section 523, the mist cooling section 524, the air cooling section 525, and the water cooling section 526 in sequence, and the temperature drops to about 100°C within 140 seconds, and finally enters the drying section 572 to evaporate the moisture; in the heating section or the cooling section, adjacent heat treatment sections are sealed and connected by a sealing pipe 54 to ensure normal heat treatment temperature.

[0045] Furthermore, each heat treatment module includes a heat treatment furnace body. When installing the layout, in order to ensure that the upper and lower heat treatment modules remain relatively fixed, such as Figure 11 As shown, a plurality of connecting components 54 are provided between the upper and lower adjacent heat treatment furnace bodies, and the connecting component 54 includes a positioning rod 542 arranged on the lower heat treatment furnace body, and the positioning rod 542 has a threaded section, and the threaded section is threadedly connected to a supporting nut 543, and the upper heat treatment furnace body is provided with a positioning hole matching the positioning rod 542, the positioning rod 542 is passed through the positioning hole, and the supporting nut 543 contacts the upper heat treatment furnace body and supports it; at the same time, the supporting nut 543 can be rotated during installation, and the height position of the plurality of supporting nuts 543 can be adjusted to facilitate the installation of the plurality of heat treatment modules on the upper layer, and the connecting component 54 is also used for installation and positioning between the top of the support platform 53 and the heat treatment modules on the lower layer, wherein the positioning rod 542 is arranged at the top of the support platform 53, and the positioning hole is arranged at the lower end of the lower heat treatment furnace body.

[0046] Furthermore, in order to prevent the heat treatment furnace body from moving upward, a connecting seat 541 is fixed to the upper heat treatment furnace body, and a positioning hole is longitudinally set on the connecting seat 541, and a supporting nut 543 is supported on the lower end of the connecting seat 541; the threaded section of the positioning rod 542 passes through the positioning hole upward, and the top of the threaded section is connected to a locking nut 544 that presses the connecting seat 541; the locking nut 542 and the supporting nut 543 respectively limit the upward and downward freedom of the heat treatment furnace body, so that the entire normalization heat treatment mechanism 51 is stably set in the high-position installation area.

[0047] Furthermore, the acid-free descaling device is also provided with a plurality of steering mechanisms, which include a bracket (not shown) and a steering roller 21 rotatably connected to the bracket. The rotating roller 21 mainly plays a guiding role, so that the oriented silicon steel strip is transported to the corresponding mechanism in a predetermined direction. In this embodiment, the steering roller 21 is mainly arranged between the strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51, between the normalizing heat treatment mechanism 51 and the grinding and brushing descaling mechanism 6, between the strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51, and between the second strip adjustment mechanism 5a and the winding mechanism 9.

[0048] Furthermore, there are at least two turning rollers 21 between the plate and strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51, and the oriented silicon steel plate and strip are wrapped around the at least two turning rollers 21 and the rotating roller 5c in a wavy path, wherein the oriented silicon steel plate and strip are wrapped around the rotating roller 5c in a U-shaped trajectory, so that after the movable seat 5b moves, the first plate and strip conveying margin formed is twice that of the movable seat 5b.

[0049] Furthermore, in the normalizing heat treatment mechanism 51, multiple heating modules are located in the upper layer, the first tube cooling section 521 is also in the upper layer, and the remaining cooling modules are located in the lower layer. Between the two heat treatment layers, between the two upper and lower adjacent heat treatment modules at the turning position of the oriented silicon steel strip, that is, between the first tube cooling section 521 and the equalizing section 522, a turning roller 21 that can guide the oriented silicon steel strip to turn is also provided, so that the oriented silicon steel strip is guided from the upper layer to the lower layer; the first tube cooling section 521 and the equalizing section 522 are sealed and connected by a seal 521, which is a cover shell, and the turning roller 21 is hidden in the seal 521 to avoid the temperature environment in the heat treatment module being affected when guiding the oriented silicon steel strip.

[0050] Furthermore, the acid-free descaling device also includes a plurality of straightening mechanisms 22 for preventing the plates and strips from bending and deforming. The straightening mechanisms 22 have two rows of rotating straightening rollers, and a straightening space is formed between the two rows of straightening rollers to allow the oriented silicon steel plates and strips to pass through; the straightening mechanisms 22 are mainly arranged between the uncoiling mechanism 1 and the welding equipment 4, in the low-position installation area and between the normalizing heat treatment mechanism 51 and the grinding and brushing descaling mechanism 6. The straightening mechanism 22 between the uncoiling mechanism 1 and the welding equipment 4 is mainly used to straighten the uncoiling oriented silicon steel plates and strips to be processed to avoid deformation in subsequent processes; considering that the oriented silicon steel plates and strips will inevitably undergo slight deformation after the normalizing heat treatment 51, a straightening mechanism 22 is also arranged between the normalizing heat treatment mechanism 51 and the grinding and brushing descaling mechanism 6 to straighten the oriented silicon steel plates and strips again.

[0051] Furthermore, the oriented silicon steel strip needs to be kept in a tensioned state during the movement to facilitate transportation. Therefore, in this embodiment, the acid-free descaling device also includes multiple tensioning mechanisms 3. The tensioning mechanism 3 includes two tensioning wheels for surrounding the strip, one of which can translate and change the distance between the two tensioning wheels to adjust the tension of the oriented silicon steel strip. The corresponding tensioning mechanism 3 is arranged between the welding equipment 4 and the strip adjustment mechanism 5 to keep the oriented silicon steel strip in a tensioned state after welding; the tensioning mechanism 3 is also arranged between the normalizing heat treatment mechanism 51 and the strip adjustment mechanism 5, and between the normalizing heat treatment mechanism 51 and the strip adjustment mechanism 5 to ensure that the oriented silicon steel strip is tensioned before and after the normalizing heat treatment. A tensioning mechanism 3 is also arranged between the winding mechanism 9 and the finishing mechanism.

[0052] Furthermore, in order to prevent the oriented silicon steel strip from deviating from its direction during movement, a double-roller correction mechanism 31 is provided between the welding equipment 4 and the strip adjustment mechanism 5, and between the second strip adjustment mechanism 5a and the cutting mechanism 91; the double-roller correction mechanism 31 includes at least two rotating conveying rollers arranged along the conveying direction, one of which can be deflected and forms an angle with the other conveying roller, thereby forming a friction force in the width direction of the oriented silicon steel strip to adjust the direction of movement of the oriented silicon steel strip.

[0053] Furthermore, after normalizing heat treatment, grinding and descaling, and finishing, the two side edges of the oriented silicon steel strip in the width direction will produce slight deformation, so a cutting mechanism 91 is also provided between the finishing mechanism and the winding mechanism 9, such as Figure 14 As shown, two rotating cutting wheels 911 are symmetrically provided in the cutting mechanism 91 and correspond to the inner side of the oriented silicon steel strip. When the rotating cutting wheels 911 rotate, the burrs on both sides of the oriented silicon steel strip can be cut off.

[0054] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A conveying compensation method for oriented silicon steel strip, characterized in that: The following steps are involved: S1: Obtaining the joint length value; the detection module measures and feeds back the joint length value between the two oriented silicon steel strips to be welded to the control system; S2: Calculating welding time; the control system calculates the welding time of the two oriented silicon steel strips based on the seam length value and the moving speed of the welding machine (41) in the welding equipment (4); S3: speed adjustment; the control system adjusts the moving speed of the plate and strip adjusting mechanism (5) or the conveying speed of the middle conveying mechanism (2a) according to the welding time, so that the plate and strip excess formed when the plate and strip adjusting mechanism (5) moves horizontally in a predetermined direction within the moving stroke is synchronously conveyed to the normalizing furnace through the middle conveying mechanism (2a).

2. The conveying compensation method for grain-oriented silicon steel strip according to claim 1, characterized in that: The conveying speed value of the middle conveying mechanism (2a) is V1; the plate strip adjustment mechanism (5) includes a movable seat and n rotating rollers rotatably arranged on the movable seat, the maximum moving stroke value of the movable seat is A, and A is pre-stored in the control system; in step S3, the control system first calculates the required margin value C of the plate strip within the welding time, C=V1*t; then performs parameter comparison and determines the size relationship between C / 2n and A, C / 2n is the moving distance of the movable seat; if C / 2n≤A, then proceed to step S3a; S3a: Adjust the moving speed of the strip adjustment mechanism (5) to V, V=V1 / 2n; If C / 2n>A, proceed to step S3b; S3b: Reduce the conveying speed value of the middle conveying mechanism (2a) to V2, and ensure that V2*t / 2n≤A; and synchronously adjust the moving speed value of the plate strip adjustment mechanism (5) to V, V=V2 / 2n.

3. The conveying compensation method for grain-oriented silicon steel strip according to claim 2, characterized in that: The value of n is 1; the oriented silicon steel strip is wound around a single rotating roller along a U-shaped path.

4. The conveying compensation method for grain-oriented silicon steel strip according to claim 2, characterized in that: The oriented silicon steel strip is transported from the front conveying mechanism (2) to the welding device (4). When the two oriented silicon steel strips are welded, the front conveying mechanism (2) stops working; if C / 2n≤A, and after step S3a is completed, then enter step S4a; S4a: reset; the front conveying mechanism (2) enters the working state from the stopped state, and the control system adjusts the conveying speed of the front conveying mechanism (2) to V3, V3>V1; the transportation speed of the middle conveying mechanism (2a) is still maintained at V1, and at the same time, the strip adjustment mechanism (5) moves in the opposite direction to the initial position at a speed of V4, V4=(V3-V1) / 2n.

5. The conveying compensation method for grain-oriented silicon steel strip according to claim 4, characterized in that: In step S4a, when the strip adjustment mechanism (5) moves in the reverse direction to the initial position, the control system adjusts the conveying speed of the front conveying mechanism (2) from V3 to V1.

6. The conveying compensation method for grain-oriented silicon steel strip according to claim 2, characterized in that: The oriented silicon steel strip is transported from the front conveying mechanism (2) to the welding device (4). When the two oriented silicon steel strips are welded, the front conveying mechanism (2) stops working; if C / 2n>A, and after the execution of step S3b is completed, step S4b is entered; S4b: reset; the front conveying mechanism (2) enters the working state from the stopped state, and the control system adjusts the conveying speed of the front conveying mechanism (2) to V1, and the transportation speed of the middle conveying mechanism (2a) is still maintained at V2; at the same time, the strip adjustment mechanism (5) moves in the reverse direction to the initial position at a speed of V5, V5=(V1-V2) / 2n.

7. The conveying compensation method for grain-oriented silicon steel strip according to claim 6, characterized in that: In step S4b, when the strip adjustment mechanism (5) moves in the reverse direction to the initial position, the control system adjusts the conveying speed of the middle conveying mechanism (2a) from V2 to V1.

8. The conveying compensation method for grain-oriented silicon steel strip according to claim 1, characterized in that: In step S1, the detection module includes a camera electrically connected to the control system, the camera captures an image of a joint between two grain-oriented silicon steel strips to be welded, and calculates the joint length value based on the image.

9. The conveying compensation method for grain-oriented silicon steel strip according to claim 1, characterized in that: In step S1, the detection module obtains a seam length value s; in step S2, the welding machine (41) is set on a moving seat, and the moving seat moves at a constant speed d along the extension path of the weld; in step S3, the control system calculates the welding time t based on the values ​​of s and d, t=s / d.

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