Continuous production process and equipment for silicon steel self-adhesive coating

Abstract

The invention relates to a self-adhesive coating, aims to solve the problem of how to improve the production continuity of a silicon steel self-adhesive coating, and provides a continuous production process and equipment for the silicon steel self-adhesive coating. The continuous production process of the silicon steel self-adhesive coating comprises the following operation steps that a first steel coil and a second steel coil are coiled and uncoiled, the tail of the first steel coil and the head of the second steel coil are cut, and the tail of the first steel coil and the head of the second steel coil are spliced and sewn to form a continuous steel coil; the method comprises the following steps: conveying a continuous steel coil to a coating machine through a plurality of tension rollers so as to coat the surface of the continuous steel coil with a self-adhesive coating, curing the continuous steel coil with the self-adhesive coating through a floating heating furnace, and cooling the continuous steel coil with the self-adhesive coating through a floating cooler; the continuous steel coil with the self-adhesive coating is output through a plurality of tension rollers, and the continuous steel coil is cut, divided and coiled to obtain a finished product, so that the effect of improving the production continuity of the silicon steel self-adhesive coating is achieved.

Description

Technical Field

[0001] The present application relates to a self-adhesive coating, and in particular to a continuous production process and equipment for a silicon steel self-adhesive coating. Background Art

[0002] In order to ensure that each sheet of the stacked core is insulated from each other, cold rolled electrical steel uses an insulating coating, that is, a layer of inorganic, organic or semi-organic coating is applied to the surface of the electrical steel, and a film is formed after baking. In addition to the insulation function, the coating also provides rust resistance and punching properties. The types of coatings have evolved from the initial blueing to the formation of oxide film C-0 coating to C-6 coating, meeting the needs of different electrical steel users.

[0003] The self-adhesive coating for electrical steel is a new type of environmentally friendly coating with two major application scenarios. One is the self-adhesive coating used for generator cores, high-speed magnetic levitation motor cores, and train traction motor cores. The product model is 548, and there are both foreign and domestic products. The other is a fast self-adhesive coating used for new energy vehicle drive motors and high-speed motor cores (thinner specifications).

[0004] In the prior art, the feeding, surface coating and baking of electrical steel are done manually, and the continuity of the production of the electrical steel self-adhesive coating is low and difficult to realize automation. How to solve the above technical problems is what the technicians in this field need to consider. Summary of the invention

[0005] The present application provides a continuous production process and equipment for silicon steel self-adhesive coatings to solve the problem of how to improve the continuity of silicon steel self-adhesive coating production.

[0006] An embodiment of the present application provides a continuous production process for a silicon steel self-adhesive coating, comprising the following operating steps: respectively rolling up a first steel coil and a second steel coil and uncoiling them, respectively clamping and delivering the first steel coil and the second steel coil, shearing the tail of the first steel coil and the head of the second steel coil, splicing and sewing the tail of the first steel coil and the head of the second steel coil to form a continuous steel coil; conveying the continuous steel coil to a coating machine through a plurality of tension rollers to coat the surface of the continuous steel coil with a self-adhesive coating, curing the continuous steel coil with the self-adhesive coating through a floating heating furnace, and cooling the continuous steel coil with the self-adhesive coating through a floating cooler; outputting the continuous steel coil with the self-adhesive coating through a plurality of tension rollers, and shearing, splitting and coiling the continuous steel coil with the self-adhesive coating.

[0007] The continuous production process of silicon steel self-adhesive coating provided in this embodiment is as follows: the first steel coil and the second steel coil are respectively rolled up and unrolled, and the tail of the first steel coil and the head of the second steel coil are sheared, spliced ​​and sewn to form a continuous steel coil, so that the steel coil can be continuously conveyed to the coating machine; the surface tension of the continuous steel coil is adjusted by a plurality of tension rollers, which is conducive to the adhesion of the self-adhesive coating to the surface of the steel coil, and then the self-adhesive coating is cured and cooled to form a continuous steel coil with the self-adhesive coating; the continuous steel coil with the self-adhesive coating is output through a plurality of tension rollers and cut, divided and coiled to obtain a finished product, so as to achieve the effect of improving the continuity of the production of silicon steel self-adhesive coating.

[0008] In a possible implementation manner, after the tail of the first steel coil and the head of the second steel coil are spliced ​​and seamed, the spliced ​​and seamed positions are deburred.

[0009] In a possible implementation, when the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, both sides of the continuous steel coil are coated simultaneously.

[0010] In a possible implementation, before the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, the surface of the continuous steel coil is sprayed to reduce the friction coefficient of the surface of the continuous steel coil.

[0011] In a possible implementation, when the continuous steel coil is conveyed to the coating machine through a plurality of tension rollers, the position of the continuous steel coil is corrected through an inlet looper.

[0012] The embodiment of the present application also provides an apparatus for a continuous production process of a silicon steel self-adhesive coating, comprising a first uncoiler for uncoiling a first steel coil, a second uncoiler for uncoiling a second steel coil, a shearing machine, a welding machine, a tension roller, a coating machine, a floating heating furnace, and a floating cooler. The shearing machine is used to shear the tail of the first steel coil and the head of the second steel coil. The welding machine is used to weld the tail of the first steel coil and the head of the second steel coil so that the first steel coil and the second steel coil are connected together to form a continuous steel coil. A plurality of tension rollers are provided, and the plurality of tension rollers are arranged at intervals along the length direction of the continuous steel coil, and the tension rollers are used to adjust the tension of the continuous steel coil. The coating machine is used to apply a self-adhesive coating to the surface of the continuous steel coil. The floating heating furnace is used to heat and cure the continuous steel coil with the self-adhesive coating. The floating cooler is used to cool the continuous steel coil with the self-adhesive coating.

[0013] In a possible implementation, the equipment for the continuous production process of silicon steel self-adhesive coating further includes an inlet looper, and the inlet looper is used to correct the position of the continuous steel coil.

[0014] In a possible embodiment, the equipment for the continuous production process of silicon steel self-adhesive coating also includes a cleaning machine and a hot air blower, wherein the cleaning machine is used to clean the surface of the continuous steel coil, and the hot air blower is used to perform hot air drying on the cleaned surface of the continuous steel coil.

[0015] In a possible embodiment, the coating machine includes a three-roller double-coating head forward coating machine and a reverse coating machine. The forward coating machine applies the self-adhesive coating to the surface of one side of the continuous steel coil by a forward coating method, and the reverse coating machine applies the self-adhesive coating to the surface of the other side of the continuous steel coil by a reverse coating method, so that the coating machine coats both sides of the continuous steel coil at the same time.

[0016] In a possible embodiment, the coating machine further includes a pre-coating nozzle, which is used to spray the surface of the continuous steel coil before the reverse coating machine applies the self-adhesive coating to the surface of the continuous steel coil to reduce the friction coefficient of the surface of the continuous steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a flow chart of a continuous production process of a silicon steel self-adhesive coating according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0020] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0021] Example See also Figure 1As shown, this embodiment provides a continuous production process of silicon steel self-adhesive coating, including the following operation steps: respectively rolling up a first steel coil and a second steel coil and uncoiling them, respectively clamping and feeding the first steel coil and the second steel coil, shearing the tail of the first steel coil and the head of the second steel coil, splicing and sewing the tail of the first steel coil and the head of the second steel coil to form a continuous steel coil; conveying the continuous steel coil to a coating machine through a plurality of tension rollers to coat the surface of the continuous steel coil with a self-adhesive coating, curing the continuous steel coil with the self-adhesive coating through a floating heating furnace, and cooling the continuous steel coil with the self-adhesive coating through a floating cooler; outputting the continuous steel coil with the self-adhesive coating through a plurality of tension rollers, shearing and dividing the continuous steel coil with the self-adhesive coating, and winding up the finished product.

[0022] The continuous production process of silicon steel self-adhesive coating provided in this embodiment is as follows: the first steel coil and the second steel coil are respectively rolled up and unrolled, and the tail of the first steel coil and the head of the second steel coil are sheared, spliced ​​and sewn to form a continuous steel coil, so that the steel coil can be continuously transported to the coating machine; the surface tension of the continuous steel coil is adjusted by a plurality of tension rollers, which is conducive to the adhesion of the self-adhesive coating to the surface of the steel coil, and then the self-adhesive coating is cured and cooled to form a continuous steel coil with the self-adhesive coating; the continuous steel coil with the self-adhesive coating is output through a plurality of tension rollers and cut, divided and coiled to obtain a finished product, so as to improve the continuity of the production of silicon steel self-adhesive coating, which is conducive to the automated operation of the equipment.

[0023] The embodiment of the present application also provides an apparatus for a continuous production process of a silicon steel self-adhesive coating, comprising a first uncoiler for uncoiling a first steel coil, a second uncoiler for uncoiling a second steel coil, a shearing machine, a welding machine, a tension roller, a coating machine, a floating heating furnace, and a floating cooler. The shearing machine is used to shear the tail of the first steel coil and the head of the second steel coil. The welding machine is used to weld the tail of the first steel coil and the head of the second steel coil so that the first steel coil and the second steel coil are connected together to form a continuous steel coil. A plurality of tension rollers are provided, and the plurality of tension rollers are arranged at intervals along the length direction of the continuous steel coil, and the tension rollers are used to adjust the tension of the continuous steel coil. The coating machine is used to apply a self-adhesive coating to the surface of the continuous steel coil. The floating heating furnace is used to heat and cure the continuous steel coil with the self-adhesive coating. The floating cooler is used to cool the continuous steel coil with the self-adhesive coating.

[0024] In this embodiment, the continuous steel coil is a silicon steel strip.

[0025] After the silicon steel strip is coated with a self-adhesive coating by a coating machine, it passes through a floating heating furnace to heat and solidify the coating. During the cooling process of the coating by a floating cooling device, the silicon steel strip does not contact the furnace roller at all, thereby improving the quality of the coating. The stability of the silicon steel strip is controlled within ±2cm.

[0026] In a possible implementation manner, after the tail of the first steel coil and the head of the second steel coil are spliced ​​and seamed, the spliced ​​and seamed positions are deburred.

[0027] In this embodiment, deburring is performed at the joint position of the first steel coil and the second steel coil, which is beneficial to improving the flatness of the surface of the steel coil, so that the self-adhesive coating is evenly adhered to the surface of the steel coil, thereby improving the stability of the continuous production process of the silicon steel self-adhesive coating and facilitating the automated operation of the equipment.

[0028] In a possible implementation manner, before the continuous steel coil is conveyed to the coating machine, the surface of the continuous steel coil is cleaned and dried.

[0029] In this embodiment, the equipment used for the continuous production process of silicon steel self-adhesive coating also includes a cleaning machine and a hot air blower, wherein the cleaning machine is used to clean the surface of the continuous steel coil, and the hot air blower is used to perform hot air drying on the cleaned surface of the continuous steel coil. Cleaning the surface of the continuous steel coil is conducive to the bonding of the surface of the continuous steel coil with the self-adhesive coating, thereby improving the stability of the continuous production process of silicon steel self-adhesive coating and facilitating the automated operation of the equipment. The hot air blower performs hot air drying on the surface of the continuous steel coil using floating heating technology, so that the surface of the continuous steel coil does not contact the furnace roller. The hot air blower performs hot air drying on the surface of the continuous steel coil, which is conducive to the rapid bonding of the self-adhesive coating with the surface of the continuous steel coil, thereby shortening the time of the silicon steel self-adhesive coating production process and improving efficiency.

[0030] In a possible implementation, when the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, both sides of the continuous steel coil are coated simultaneously.

[0031] In this embodiment, the coating machine includes a three-roller double-head forward coating machine, a reverse coating machine and other new coating machines. The forward coating machine applies a self-adhesive coating to the surface of one side of the continuous steel coil by a forward coating method, and the reverse coating machine applies a self-adhesive coating to the surface of the other side of the continuous steel coil by a reverse coating method, so that the coating machine coats both sides of the continuous steel coil at the same time.

[0032] The coating machine is a three-roller coating machine on each side, mainly composed of an upper surface coating roller group, a lower surface coating roller group, a coating head moving part, a main frame, etc., which coats the upper and lower surfaces of the strip at the same time. According to the different running directions of the coating roller group of the coating machine and the continuous steel coil, the roller coating process of the coating roller group is divided into two types: forward coating method and reverse coating method. In the forward coating method, the tangential speed direction of the coating roller group and the surface of the continuous steel coil is consistent at the contact point; in the reverse coating method, the tangential speed direction of the coating roller group and the surface of the continuous steel coil is opposite at the contact point. By switching between the two coating methods, the coating requirements of coatings of different thicknesses can be met.

[0033] In a possible implementation, before the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, the surface of the continuous steel coil is sprayed to reduce the friction coefficient of the surface of the continuous steel coil.

[0034] In this embodiment, the coating machine further includes a pre-coating spray pipe, which is used to spray the surface of the continuous steel coil before the reverse coating machine coats the surface of the continuous steel coil with the self-adhesive coating to reduce the friction coefficient of the surface of the continuous steel coil. When the coating roller group adopts the reverse coating method, the surface of the continuous steel coil is sprayed in advance to reduce the friction coefficient between the roller surface and the surface of the continuous steel coil, thereby increasing the life of the roller body.

[0035] Optionally, the coating machine also includes a pressure sensing device, which displays the pressure between the coating roller and the surface of the continuous steel coil on a display screen, allowing real-time observation and timely adjustment to accurately control the coating thickness of the coating. The speed difference between the coating roller and the continuous steel coil forms a shear force between the rollers and the continuous steel coil. The greater the speed difference, the greater the shear force, and the lower the instantaneous viscosity of the coating, which is conducive to the flow and film formation of the coating and improves the uniformity of the paint film. However, the speed difference between the coating roller and the steel coil will also affect the thickness of the coating. The greater the speed difference, the thicker the coating. Before the coating machine operates, the pressure and speed difference between the coating roller and the steel coil must be controlled according to the actual situation.

[0036] The coating machine also includes a metering roller with a scraper, which is used for cleaning the metering roller and controlling the amount of coating liquid.

[0037] The coating machine also includes a control console, which has a reserved film thickness meter data interface, which can display the real-time detection data of the film thickness meter. When there is a large deviation between the film thickness detection value and the set value, the operator is reminded to adjust the parameters of the coating machine. The coating control system has a built-in database, which can correct and automatically call parameters according to different coatings, and automatically set the coating machine parameters for use. In the case of operator adjustment, the dry film thickness measured by the sensor is displayed on the status page of the HMI, allowing the operator to intervene and check the adjustment parameters.

[0038] The operation of the coating machine is divided into two modes: manual and automatic control; the manual mode is operated by the on-site operation box (LOCAL) and the central OPS monitoring station (REMOTE), and the automatic mode is the production instruction requirements input by the main control PLC, and the coating is automatically applied. Manual LOCAL function: On the touch screen on the on-site operation box, the speed and pressure of the coating machine can be set, and the alarm information of the motor, transmission, switch, etc. can be displayed. Other buttons on the operation box can realize forward coating, reverse coating, cylinder action, travel motor action, etc. And after the coating machine is moved to the maintenance position, the function operation of each component can be checked. Automatic function: After receiving the pre-instruction, the coating machine can switch to automatic mode. In this mode, the coating machine can automatically call parameters according to the input unit speed, strip steel specifications, coating liquid type, and film thickness requirements, and put them into use. The real-time process data of the coating machine (including coating roller speed, direction, pressure, etc.) of the coating machine PLC must provide the above data to the main control PLC. The unit is equipped with weld tracking, and the coating machine can realize automatic weld avoidance and pressure reset functions. The coating machine has advanced electrical control level and unit communication function. The coating machine has complete safety protection design and pipeline layout plan. Protective covers are set above and on the sides of the rollers for easy maintenance to prevent coating liquid splashing. Each coating head of the coating machine is equipped with a safety device for emergency stop of the equipment. The pressure sensor of the coating machine can be zero-calibrated without removing the parts. The constant speed motors of the coating machine are all first-class energy-efficient motors.

[0039] In a possible implementation, when the continuous steel coil is conveyed to the coating machine through a plurality of tension rollers, the position of the continuous steel coil is corrected through an inlet looper.

[0040] In this embodiment, the equipment for the continuous production process of silicon steel self-adhesive coating also includes an inlet looper, which is used to correct the position of the continuous steel coil. The continuous steel coil is long, and during the transportation of the continuous steel coil, the position of the continuous steel coil is skewed. The position of the continuous steel coil is corrected by the inlet looper to improve the position accuracy of the continuous steel coil entering the coating machine, which is beneficial for the coating machine to apply the self-adhesive coating to the surface of the continuous steel coil.

[0041] In summary, the equipment for the continuous production process of silicon steel self-adhesive coating provided in this embodiment includes a first uncoiler for uncoiling a first steel coil, a second uncoiler for uncoiling a second steel coil, a shearing machine and a welding machine; the shearing machine is used to shear the tail of the first steel coil and the head of the second steel coil; the welding machine is used to weld the tail of the first steel coil and the head of the second steel coil so that the first steel coil and the second steel coil are connected together to form a continuous steel coil. The continuous production process of silicon steel self-adhesive coating provided in this embodiment comprises the following steps: respectively rolling up a first steel coil and a second steel coil and unwinding them, and shearing, splicing and sewing the tail of the first steel coil and the head of the second steel coil to form a continuous steel coil, so that the steel coil can be continuously conveyed to a coating machine; the continuous steel coil is subjected to a plurality of tension rollers to adjust the surface tension of the steel coil, which is beneficial for the self-adhesive coating to adhere to the surface of the steel coil; the continuous steel coil with the self-adhesive coating is cured by a floating heating furnace, and the continuous steel coil with the self-adhesive coating is cooled by a floating cooler to form a continuous steel coil with the self-adhesive coating; the continuous steel coil with the self-adhesive coating is output by a plurality of tension rollers and is sheared, divided and coiled to obtain a finished product, so as to improve the continuity of the production of silicon steel self-adhesive coating, and is beneficial for the automated operation of the equipment.

[0042] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A continuous production process for silicon steel self-adhesive coating, characterized in that: The steps are as follows: The first steel coil and the second steel coil are respectively coiled and uncoiled, the first steel coil and the second steel coil are respectively clamped and sent, the tail of the first steel coil and the head of the second steel coil are sheared, and the tail of the first steel coil and the head of the second steel coil are spliced ​​and sewn to form a continuous steel coil; The continuous steel coil is conveyed to a coating machine through a plurality of tension rollers to apply a self-adhesive coating to the surface of the continuous steel coil, the continuous steel coil with the self-adhesive coating is cured through a floating heating furnace, and the continuous steel coil with the self-adhesive coating is cooled through a floating cooler; The continuous steel coil with the self-adhesive coating is output through a plurality of tension rollers, and the continuous steel coil with the self-adhesive coating is sheared, divided into coils and coiled.

2. The continuous production process of silicon steel self-adhesive coating according to claim 1, characterized in that: After the tail of the first steel coil and the head of the second steel coil are spliced ​​and seamed, the spliced ​​and seamed positions are deburred.

3. The continuous production process of silicon steel self-adhesive coating according to claim 1, characterized in that: When the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, both sides of the continuous steel coil are coated at the same time.

4. The continuous production process of silicon steel self-adhesive coating according to claim 3 is characterized in that: Before the coating machine applies the self-adhesive coating to the surface of the continuous steel coil, the surface of the continuous steel coil is sprayed to reduce the friction coefficient of the surface of the continuous steel coil.

5. The continuous production process of silicon steel self-adhesive coating according to claim 1, characterized in that: When the continuous steel coil is conveyed to the coating machine through a plurality of tension rollers, the position of the continuous steel coil is corrected through an inlet looper.

6. An apparatus for continuous production of silicon steel self-adhesive coating, characterized in that: It includes a first uncoiler for uncoiling a first steel coil, a second uncoiler for uncoiling a second steel coil, a shearing machine, a welding machine, a tension roller, a coating machine, a floating heating furnace and a floating cooler; The shearing machine is used to shear the tail of the first steel coil and the head of the second steel coil; The welding machine is used to weld the tail of the first steel coil and the head of the second steel coil, so that the first steel coil and the second steel coil are connected together to form a continuous steel coil; There are multiple tension rollers, which are arranged at intervals along the length direction of the continuous steel coil, and the tension rollers are used to adjust the tension of the continuous steel coil; The coating machine is used to apply a self-adhesive coating to the surface of the continuous steel coil; The floating heating furnace is used to heat and cure the continuous steel coil with the self-adhesive coating; The floating cooler is used to cool the continuous steel coil with the self-adhesive coating.

7. The equipment for continuous production of silicon steel self-adhesive coating according to claim 6 is characterized in that: It also includes an inlet looper, which is used to correct the position of the continuous steel coil.

8. The equipment for continuous production of silicon steel self-adhesive coating according to claim 6 is characterized in that: It also includes a cleaning machine and a hot air blower. The cleaning machine is used to clean the surface of the continuous steel coil, and the hot air blower is used to perform hot air drying on the cleaned surface of the continuous steel coil.

9. The equipment for continuous production of silicon steel self-adhesive coating according to claim 6, characterized in that: The coating machine includes a three-roller double-coating head forward coating machine and a reverse coating machine. The forward coating machine applies a self-adhesive coating to the surface of one side of the continuous steel coil by a forward coating method, and the reverse coating machine applies a self-adhesive coating to the surface of the other side of the continuous steel coil by a reverse coating method, so that the coating machine coats the surfaces of both sides of the continuous steel coil at the same time.

10. The equipment for continuous production of silicon steel self-adhesive coating according to claim 9, characterized in that: The coating machine also includes a pre-coating nozzle, which is used to spray the surface of the continuous steel coil before the reverse coating machine applies the self-adhesive coating to the surface of the continuous steel coil to reduce the friction coefficient of the surface of the continuous steel coil.

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