Online laser annealing device for welding seam of silicon steel sheet on strip steel production line

By using an online laser annealing device to treat the weld seams of silicon steel thin plates with a high-energy beam heat source, the problem of unstable mechanical properties of weld seams in traditional continuous strip annealing is solved, thereby improving weld quality and increasing production efficiency.

CN223963550UActive Publication Date: 2026-03-03WUHAN BAOHAN WELDING EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

In the traditional continuous annealing process for strip steel, the heat-affected zone of the weld seam of silicon steel thin plate is refined due to rapid cooling, resulting in grain refinement, residual stress concentration and increased hardness, which leads to differences in mechanical properties. Furthermore, offline induction annealing causes extended production line downtime, making it difficult to eliminate weld brittleness and affecting production efficiency and quality.

Method used

An online laser annealing device is used to treat the weld with a high-energy beam heat source through a laser gun, thereby achieving directional reconstruction of the weld structure. The strip steel is fixed and its position is adjusted by using a clamping hydraulic cylinder and a sliding frame to ensure that the laser energy irradiates the weld surface uniformly.

Benefits of technology

It improves the mechanical stability of strip steel welds, reduces weld fractures, lowers production costs, and increases production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of strip steel processing equipment, and discloses a strip steel production line silicon steel sheet weld joint on-line laser annealing device which comprises a strip steel processing table and a sliding frame, the strip steel processing table comprises two sets of supporting frames and a front-back adjusting seat, and the two sets of supporting frames are symmetrically arranged on the two sides of the bottom of the strip steel processing table; the front-back adjusting base is arranged on one side of the top of the supporting frame, and the sliding frame comprises a moving trolley and a laser gun. Strip steel can be clamped and fixed through the pressing hydraulic cylinder, the pressing plate, the strip steel machining table and the anti-skid table, the position of the laser gun can be moved through the sliding frame and the moving trolley, and laser is emitted to the upper surface and the lower surface of a welding seam through the connecting optical fiber, the laser generator and the laser gun. The directional reconstruction of the weld structure is realized through the high-energy beam heat source, so that the stability of the strip steel weld quality is improved, the phenomenon of strip steel weld fracture is reduced, the production cost is greatly reduced, and the production efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of strip steel processing equipment, specifically to an online laser annealing device for silicon steel thin plate welds in a strip steel production line. Background Technology

[0002] Continuous strip annealing refers to a production method in which strip steel passes continuously through an annealing furnace without a seal, and the strip steel is directly coiled without stopping. In the continuous strip annealing production line, the weld treatment of silicon steel sheet is a key link affecting the quality of the finished product.

[0003] In traditional processes, the heat-affected zone formed after welding undergoes rapid cooling, resulting in grain refinement, residual stress concentration, and a significant increase in hardness, leading to a clear difference in mechanical properties compared to the base material. Existing technologies often employ offline induction annealing or segmented heat treatment, which suffers from defects such as uneven distribution of the electromagnetic field during induction heating, making thin plate welds prone to overheating or underheating. There are also defects such as offline operation of the annealing equipment leading to extended production line downtime and affecting the continuous production rhythm. Finally, for high-silicon steel grades, traditional resistance welding combined with conventional annealing is insufficient to eliminate the weld brittleness. Utility Model Content

[0004] The purpose of this invention is to provide an online laser annealing device for silicon steel sheet welds in a strip steel production line, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an online laser annealing device for silicon steel sheet welds in a strip steel production line, comprising a strip steel processing table and a sliding frame. The strip steel processing table includes a support frame and a front and rear adjustment seat. Two sets of the support frames are symmetrically arranged on both sides of the bottom of the strip steel processing table. The front and rear adjustment seat is located on one side of the top of the support frame. The sliding frame includes a moving trolley and a laser gun. The moving trolley is slidably disposed on the outside of the sliding frame. Multiple sets of the laser guns are evenly arranged at the front end of the moving trolley.

[0006] Preferably, a multi-stage hydraulic cylinder is provided on the other side of the top of the support frame, a laser generator is provided above the top of the sliding frame, and a connecting optical fiber is provided on one side of the laser generator.

[0007] Preferably, the top of the strip processing table is provided with a mounting frame, and multiple sets of clamping hydraulic cylinders are evenly arranged at the front end of the mounting frame. A clamping plate is provided at the bottom of the clamping hydraulic cylinder, and an anti-slip platform is provided at the top of the mounting frame. A servo motor is installed on one side of the mounting frame, and a rotating rod is connected to the output end of the servo motor.

[0008] Preferably, the bottom of the front and rear adjustment seats is detachably connected to the support frame by mounting bolts, and the top of the two sets of front and rear adjustment seats is connected to the bottom of the strip steel processing table.

[0009] Preferably, the front end of the mobile vehicle is provided with multiple sets of fixed frames, and the laser gun is detachably connected to the fixed frames by mounting bolts.

[0010] Preferably, the outer side of the sliding frame is provided with a sliding groove, the interior of the mobile trolley is provided with a power component, and the mobile trolley is movably connected to the sliding frame through the sliding groove.

[0011] Preferably, the multi-stage hydraulic cylinder is detachably connected to the support frame via fixing bolts, and connecting blocks are provided on both sides of the strip processing table, with the telescopic end of the multi-stage hydraulic cylinder connected to the connecting blocks.

[0012] Preferably, the other end of the connecting optical fiber is detachably connected to the laser gun, and the laser gun is connected to the laser generator via the connecting optical fiber.

[0013] Preferably, the mounting bracket is detachably connected to the strip processing table via fixing bolts, and the clamping hydraulic cylinder is detachably connected to the mounting bracket via fixing bolts.

[0014] Preferably, mounting blocks are provided on both sides of the bottom of the anti-slip table, and the rotating rod extends through the mounting block. The anti-slip table is connected to the servo motor via the rotating rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses a hydraulic cylinder, a clamping plate, a strip processing table, and an anti-slip table to clamp and fix the strip steel. The position of the laser gun can be moved by a sliding frame and a moving trolley. The laser is emitted onto the upper and lower surfaces of the weld by connecting an optical fiber, a laser generator, and a laser gun. The high-energy beam heat source realizes the directional reconstruction of the weld structure, thereby improving the stability of the strip steel weld quality, reducing the phenomenon of strip steel weld fracture, greatly reducing production costs and improving production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is the front view of the present invention.

[0019] Figure 2 This is a top view of the present invention.

[0020] Figure 3 This is a side view of the present invention.

[0021] In the diagram: 1. Strip processing table; 101. Support frame; 102. Front and rear adjustment seat; 103. Multi-stage hydraulic cylinder; 2. Sliding frame; 201. Moving trolley; 202. Laser gun; 203. Laser generator; 204. Connecting optical fiber; 3. Mounting frame; 301. Clamping hydraulic cylinder; 302. Clamping plate; 303. Anti-slip table; 304. Servo motor; 305. Rotating rod. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-3This utility model provides an embodiment of an online laser annealing device for silicon steel sheet welds in a strip steel production line: An online laser annealing device for silicon steel sheet welds in a strip steel production line includes a strip steel processing table 1 and a sliding frame 2. The strip steel processing table 1 includes a support frame 101 and front and rear adjustment seats 102. Two sets of support frames 101 are symmetrically arranged on both sides of the bottom of the strip steel processing table 1 to support it. The front and rear adjustment seats 102 are located on one side of the top of the support frame 101 to facilitate adjustment of the working position of the strip steel processing table 1. The sliding frame 2 includes a moving trolley 201 and... The laser gun 202 and the mobile carriage 201 are slidably mounted on the outside of the sliding frame 2. Multiple sets of laser guns 202 are evenly arranged at the front end of the mobile carriage 201. The position of the laser gun 202 can be adjusted by the mobile carriage 201. On the other side of the top of the support frame 101, there is a multi-stage hydraulic cylinder 103. The multi-stage hydraulic cylinder 103 is used to adjust the position of the strip processing table 1 back and forth. A laser generator 203 is located above the top of the sliding frame 2. A connecting optical fiber 204 is provided on one side of the laser generator 203 to provide a laser source for processing the strip.

[0027] Please refer to this carefully. Figure 1 and Figure 3 The top of the strip processing table 1 is equipped with a mounting frame 3. Multiple sets of clamping hydraulic cylinders 301 are evenly arranged at the front end of the mounting frame 3. The bottom of the clamping hydraulic cylinder 301 is equipped with a clamping plate 302. The clamping hydraulic cylinder 301 can adjust the clamping plate 302 up and down to facilitate clamping and fixing the strip. The top of the mounting frame 3 is equipped with an anti-slip table 303. A servo motor 304 is installed on one side of the mounting frame 3. The output end of the servo motor 304 is connected to a rotating rod 305. The anti-slip table 303 can be rotated by the servo motor 304 and the rotating rod 305 to facilitate clamping and fixing the strip.

[0028] Please refer to this carefully. Figure 1 and Figure 2The bottom of the front and rear adjustment seats 102 is detachably connected to the support frame 101 via mounting bolts, allowing the front and rear adjustment seats 102 to be installed at the bottom of the support frame 101. The tops of the two sets of front and rear adjustment seats 102 are connected to the bottom of the strip processing table 1, enabling connection between the strip processing table 1 and the support frame 101. The front end of the mobile carriage 201 is equipped with multiple sets of fixed frames, and the laser gun 202 is detachably connected to the fixed frames via mounting bolts, allowing for the assembly and disassembly of the laser gun 202. The outer side of the sliding frame 2 is provided with a sliding groove, and the interior of the mobile carriage 201 is equipped with a power component. The mobile carriage 201 is movably connected to the sliding frame 2 via the sliding groove, allowing for movement between the mobile carriage 201 and the sliding frame 2. The laser gun 202 is adjustable for its position. The multi-stage hydraulic cylinder 103 is detachably connected to the support frame 101 via fixing bolts, allowing for installation and fixation. Connecting blocks are provided on both sides of the strip processing table 1, and the telescopic end of the multi-stage hydraulic cylinder 103 is connected to the connecting blocks, enabling the strip processing table 1 to be adjusted back and forth. The other end of the connecting fiber optic cable 204 is detachably connected to the laser gun 202. The laser gun 202 is connected to the laser generator 203 via the connecting fiber optic cable 204. The high-power laser emitted by the laser generator 203 irradiates the upper and lower surfaces of the weld, achieving directional reconstruction of the weld structure through a high-energy beam heat source, thereby improving the stability of the strip weld quality.

[0029] Please refer to this carefully. Figure 1 and Figure 3 The mounting bracket 3 is detachably connected to the strip processing table 1 by fixing bolts. The mounting bracket 3 and the strip processing table 1 are installed by fixing bolts. The clamping hydraulic cylinder 301 is detachably connected to the mounting bracket 3 by fixing bolts, so as to install and fix the clamping hydraulic cylinder 301 to the mounting bracket 3. The bottom of the anti-slip table 303 is provided with mounting blocks on both sides, and the rotating rod 305 passes through the inside of the mounting block, so as to fix the rotating rod 305 to the anti-slip table 303. The anti-slip table 303 is connected to the servo motor 304 through the rotating rod 305, so that the use angle of the anti-slip table 303 can be adjusted to facilitate the clamping and fixing of the strip.

[0030] Working Principle: When in use, the power is turned on, and one end of the strip is moved between the clamping plate 302 and the anti-slip table 303. The anti-slip table 303 can be rotated by the servo motor 304 and the rotating rod 305, thereby adjusting the angle of the anti-slip table 303. The clamping hydraulic cylinder 301 drives the clamping plate 302 to move downward, thereby clamping and fixing the strip. The strip processing table 1 can be adjusted back and forth by the front and rear adjustment seat 102 and the multi-stage hydraulic cylinder 103. The laser gun 202 is moved to the edge of the strip by the moving carriage 201, and the laser generator 203 is started to emit a high-power laser. The laser is transmitted to the laser gun 202 through the connecting optical fiber 204. The high-power laser emitted by the laser generator 203 irradiates the upper and lower surfaces of the weld. The high-energy beam heat source realizes the directional reconstruction of the weld structure, thereby improving the stability of the strip weld quality, reducing the phenomenon of strip weld breakage, greatly reducing production costs and improving production efficiency.

[0031] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An online laser annealing device for silicon steel sheet welds in a strip steel production line, characterized in that: The strip processing table (1) includes a support frame (101) and a front and rear adjustment seat (102). Two sets of the support frames (101) are symmetrically arranged on both sides of the bottom of the strip processing table (1), and the front and rear adjustment seat (102) is arranged on one side of the top of the support frame (101). The sliding frame (2) includes a moving trolley (201) and a laser gun (202). The moving trolley (201) is slidably disposed on the outside of the sliding frame (2), and multiple sets of laser guns (202) are evenly arranged at the front end of the moving trolley (201).

2. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 1, characterized in that: A multi-stage hydraulic cylinder (103) is provided on the other side of the top of the support frame (101), and a laser generator (203) is provided above the top of the sliding frame (2), with a connecting optical fiber (204) on one side of the laser generator (203).

3. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 1, characterized in that: The top of the strip processing table (1) is provided with a mounting frame (3), and multiple sets of clamping hydraulic cylinders (301) are evenly arranged at the front end of the mounting frame (3). The bottom of the clamping hydraulic cylinder (301) is provided with a clamping plate (302). The top of the mounting frame (3) is provided with an anti-slip table (303). A servo motor (304) is installed on one side of the mounting frame (3), and the output end of the servo motor (304) is connected to a rotating rod (305).

4. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 1, characterized in that: The bottom of the front and rear adjustment seats (102) is detachably connected to the support frame (101) by mounting bolts, and the top of the two sets of front and rear adjustment seats (102) are connected to the bottom of the strip processing table (1).

5. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 1, characterized in that: The front end of the mobile trolley (201) is provided with multiple sets of fixed frames, and the laser gun (202) is detachably connected to the fixed frames by mounting bolts.

6. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 1, characterized in that: The sliding frame (2) has a sliding groove on its outer side, and the mobile trolley (201) has a power component inside. The mobile trolley (201) is movably connected to the sliding frame (2) through the sliding groove.

7. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 2, characterized in that: The multi-stage hydraulic cylinder (103) is detachably connected to the support frame (101) by fixing bolts. Both sides of the strip processing table (1) are provided with connecting blocks, and the telescopic end of the multi-stage hydraulic cylinder (103) is connected to the connecting blocks.

8. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 2, characterized in that: The other end of the connecting optical fiber (204) is detachably connected to the laser gun (202), and the laser gun (202) is connected to the laser generator (203) through the connecting optical fiber (204).

9. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 3, characterized in that: The mounting bracket (3) is detachably connected to the strip processing table (1) by fixing bolts, and the clamping hydraulic cylinder (301) is detachably connected to the mounting bracket (3) by fixing bolts.

10. The online laser annealing device for silicon steel sheet weld seams in a strip steel production line according to claim 3, characterized in that: The anti-slip platform (303) has mounting blocks on both sides of its bottom, and a rotating rod (305) extends through the mounting blocks. The anti-slip platform (303) is connected to the servo motor (304) via the rotating rod (305).