A surface defect on-line detection and marking system for cold-rolled stainless steel strip

Abstract

The utility model relates to cold-rolled stainless steel production technical field, specifically disclose a kind of cold-rolled stainless steel strip surface defect on-line detection marking system, including X-axis linear motor, Y-axis linear motor and X-axis double-cavity air cylinder, first scribe, pass through Z-axis screw rod driving assembly installation in the rotor of Y-axis linear motor, first scribe is vertically arranged in the nut pair of Z-axis transmission screw rod assembly;Two second scribes are respectively arranged in the two ends of the same side of Y-axis linear motor and Z-axis screw rod driving assembly, and second scribe is connected with rotating motor;Z-axis screw rod driving assembly and rotating motor synchronous drive first scribe and second scribe work, and first scribe contacts the surface of target defect of cold-rolled stainless steel, and second scribe contacts the side of cold-rolled stainless steel.The utility model can mark surface and side in the surface defect of cold-rolled stainless steel production process, facilitate the positioning of the fast defect position in subsequent stainless steel processing.

Description

Technical Field

[0001] This utility model relates to the field of cold-rolled stainless steel production technology, specifically to an online detection and marking system for surface defects in cold-rolled stainless steel strip. Background Technology

[0002] Cold-rolled stainless steel strip is widely used in high-end home appliances, elevator decoration, automotive parts, precision instruments, medical devices, and architectural decoration due to its excellent strength, corrosion resistance, and aesthetically pleasing surface. In these applications, the surface quality of the product is often a key factor determining its grade, performance, and customer satisfaction.

[0003] To ensure product quality, modern cold-rolled stainless steel production lines are generally equipped with online surface defect detection systems. These systems typically employ high-resolution linear or area array cameras, combined with high-brightness line or area light sources, and utilize machine vision technology to capture real-time images of the stainless steel strip's surface during high-speed operation, creating data records of defects in the stainless steel strip.

[0004] Most existing systems simply record defect information (type, location coordinates) in a database or host computer system. The physical marking process itself is highly dependent on manual operation. Usually, it is necessary to wait until the steel coil is completely unwound from the coiler (or during the unwinding process), and then the operator manually marks the outer ring or end face of the coil based on the defect location information provided by the system (mainly the length in meters or the number of turns) (such as painting, affixing labels, stamping, etc.). There is a possibility of mismarking and omissions, and the location of the defect on the steel coil may not be accurately found in the subsequent manual marking process. Utility Model Content

[0005] The purpose of this invention is to provide an online detection and marking system for surface defects of cold-rolled stainless steel strip, so as to solve the technical problem in the prior art that there is no existing device for simultaneous marking of the side and surface of surface defects of cold-rolled stainless steel.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: An online detection and marking system for surface defects in cold-rolled stainless steel strip includes: X-axis linear motors are installed on both sides of the cold-rolled stainless steel conveyor belt and along the conveying direction of the cold-rolled stainless steel conveyor belt. A Y-axis linear motor is installed in the width direction of the cold-rolled stainless steel conveyor belt, and the two ends of the Y-axis linear motor are respectively connected to the movers of the corresponding X-axis linear motors. The first scribing device is mounted on the mover of the Y-axis linear motor via a Z-axis lead screw transmission assembly. An X-axis double-chamber cylinder is installed on the mover of the Y-axis linear motor. The output end of the X-axis double-chamber cylinder is connected to the Z-axis lead screw transmission assembly. The first scribing device is vertically mounted on the nut pair of the Z-axis transmission lead screw assembly. The second scribing device includes two units, which are respectively located at both ends of the same side of the Y-axis linear motor and the Z-axis lead screw transmission assembly. The second scribing device is connected to a rotary motor. The Z-axis lead screw drive assembly and the rotary motor synchronously drive the first scribing device and the second scribing device to work. The first scribing device contacts the surface of the target defect in the cold-rolled stainless steel, and the second scribing device contacts the side of the cold-rolled stainless steel. Furthermore, the contact point between the first scribing tool and the surface of the cold-rolled stainless steel, and the contact point between the second scribing tool and the side of the cold-rolled stainless steel, are on the same straight line along the width direction of the cold-rolled stainless steel.

[0007] As a preferred embodiment of this utility model, a connecting rod along the moving direction of the Y-axis linear motor is provided on the surface of the same side of the Y-axis linear motor and the Z-axis lead screw transmission assembly, and the fixed part of the Z-axis lead screw transmission assembly is movably connected to the connecting rod. Two second marking devices are respectively disposed at both ends of the connecting rod.

[0008] As a preferred embodiment of the present invention, the second scribing device includes a first horizontal bar located above the side surface of the cold-rolled stainless steel, a second horizontal bar located below the side surface of the cold-rolled stainless steel, and a vertical bar located on the side of the cold-rolled stainless steel and connecting the ends of the first and second horizontal bars. An ink core is provided on the surface of the whole formed by the connection of the first horizontal bar, the second horizontal bar and the vertical bar facing the cold-rolled stainless steel. A cam mechanism is connected to the middle of the outer surface of the vertical rod. The cam mechanism is connected to the output shaft of the rotating motor. A spring is fitted on the cam mechanism. When the rotating motor rotates, the cam mechanism, which is the whole formed by the connection of the first horizontal rod, the second horizontal rod and the vertical rod, rotates around the boss mechanism as the rotation axis, and moves along the length direction of the connecting rod. The vertical rod contacts the side of the cold-rolled stainless steel, and the first horizontal rod and the second horizontal rod contact the upper surface and the lower surface of the side of the cold-rolled stainless steel, respectively.

[0009] As a preferred embodiment of this utility model, guide roller sets are provided on both the upstream and downstream sides of the X-axis linear motor located on the cold-rolled stainless steel conveyor belt.

[0010] Compared with the prior art, this utility model has the following advantages: This invention utilizes a drive mechanism formed by an X-axis linear motor, a Y-axis linear motor, a Z-axis lead screw transmission assembly, and an X-axis double-chamber cylinder to achieve multi-degree-of-freedom movement of the first and second scribing devices. This enables the first and second scribing devices to accurately align with the defect locations on the surface of cold-rolled stainless steel. The Z-axis lead screw transmission assembly and the rotary motor allow the first and second scribing devices to simultaneously contact the surface and side of the stainless steel defect location and scribing, thereby marking the surface of the stainless steel strip. Even after the cold-rolled stainless steel strip is coiled, it can still provide rapid positioning of defect locations in subsequent stainless steel processing. Attached Figure Description

[0011] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the assembly structure of the second scribing device and the connecting rod according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the second scribing device according to an embodiment of the present invention.

[0013] The labels in the diagram represent the following: 1. X-axis linear motor; 2. Y-axis linear motor; 3. First scribing device; 4. Second scribing device; 5. Z-axis lead screw drive assembly; 6. Rotary motor; 7. Guide roller assembly; 8. Connecting rod; 9. X-axis double-chamber cylinder; 41. First horizontal bar; 42. Second horizontal bar; 43. Vertical bar; 44. Ink core; 45. Spring; 46. Cam mechanism; 47. Rotary disk. Detailed Implementation

[0014] 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.

[0015] like Figure 1 and Figure 2 As shown, this utility model provides an online detection and marking system for surface defects in cold-rolled stainless steel strip, comprising: X-axis linear motor 1 is installed on both sides of the cold-rolled stainless steel conveyor belt and along the conveying direction of the cold-rolled stainless steel conveyor belt. Y-axis linear motor 2 is set in the width direction of the cold-rolled stainless steel conveyor belt, and the two ends of Y-axis linear motor 2 are respectively connected to the movers of X-axis linear motor 1 on the corresponding side. The first scribing device 3 is mounted on the mover of the Y-axis linear motor 2 via the Z-axis lead screw transmission assembly 5. An X-axis double-chamber cylinder 9 is installed on the mover of the Y-axis linear motor 2. The output end of the X-axis double-chamber cylinder 9 is connected to the Z-axis lead screw transmission assembly 5. The first scribing device 3 is vertically mounted on the nut pair of the Z-axis transmission lead screw assembly 5. The second scribing device 4, including two, is respectively set at both ends of the same side of the Y-axis linear motor 2 and the Z-axis lead screw transmission assembly 5. The second scribing device 4 is connected to a rotary motor 6. The Z-axis lead screw drive assembly 5 and the rotary motor 6 synchronously drive the first scribing device 3 and the second scribing device 4 to work. The first scribing device 3 contacts the surface of the target defect in the cold-rolled stainless steel, and the second scribing device 4 contacts the side of the cold-rolled stainless steel.

[0016] A connecting rod 8 is provided on the surface of the same side as the Y-axis linear motor 2 and the Z-axis lead screw transmission assembly 5, along the moving direction of the Y-axis linear motor 2. The fixed part of the Z-axis lead screw transmission assembly 5 is movably connected to the connecting rod 8. Here, the X-axis double-chamber cylinder 9 can simultaneously drive the connecting rod 8 and the Z-axis lead screw transmission assembly 5 to move back and forth along the direction of conveying cold-rolled stainless steel, while the connecting rod 8 and the Z-axis lead screw transmission assembly 5 are movably connected, or in other words, the fixed part of the Z-axis lead screw transmission assembly 5 ( Figure 1 The frame (a square frame) can be connected to the connecting rod 8 via a guide rail. The connecting rod 8 is connected to the base of the Y-axis linear motor 2 via a movable guide rod. The guide rod is along the conveying direction of the cold-rolled stainless steel. That is, a guide hole is provided on the base of the Y-axis linear motor 2 for the guide rod to move. The guide rod and the guide hole are axially matched and do not separate (not shown in the figure).

[0017] Two second marking devices 4 are respectively installed at both ends of the connecting rod 8.

[0018] This paper provides a specific implementation of the second scribing device 4, such as... Figure 2 and Figure 3 As shown: The second scribing device 4 includes a first horizontal bar 41 located above the side surface of the cold-rolled stainless steel, a second horizontal bar 42 located below the side surface of the cold-rolled stainless steel, and a vertical bar 43 located on the side of the cold-rolled stainless steel and connecting the ends of the first horizontal bar 41 and the second horizontal bar 42. An ink core 44 is provided on the surface of the cold-rolled stainless steel formed by the connection of the first horizontal bar 41, the second horizontal bar 42 and the vertical bar 43.

[0019] A cam mechanism 46 is connected to the middle of the outer surface of the vertical rod 43. The cam mechanism 46 is connected to the output shaft of the rotary motor 6. A spring 45 is fitted on the cam mechanism 46. When the rotary motor 6 rotates, the cam mechanism 46, which is formed by the connection of the first horizontal rod 41, the second horizontal rod 42 and the vertical rod 43, rotates around the boss mechanism 46 as the rotation axis, and moves along the length direction of the connecting rod 8. The vertical rod 43 contacts the side of the cold-rolled stainless steel, and the first horizontal rod 41 and the second horizontal rod 42 contact the upper and lower surfaces of the side of the cold-rolled stainless steel, respectively.

[0020] Specifically, the main body of the cam mechanism 4 in this embodiment is a cylindrical cam, which is divided into two parts 41a and 41b in the middle. The two parts are movably fitted together. The end of one part 41a is connected to the middle of the end of the vertical rod 43, and the outer end of the other part 41b is connected to the housing of the rotary motor 6 and can rotate. The output shaft of the rotary motor 6 is splinedly connected to 41b. At the same time, the vertical rod 43 is set on the rotating disk 47 (along a certain diameter of the rotating disk 47, i.e., a mounting groove for the vertical rod 43 is provided on a certain diameter of the rotating disk 47), and the rotating disk 47 can rotate. The rotating disk 47 only allows the vertical rod 43 to move axially along the output shaft 48 of the rotary motor 6. One end of the spring 45 is fixedly connected to the housing of the rotary motor 6, and the other end is rotatably connected to the vertical rod 43.

[0021] Furthermore, when the output shaft of the rotary motor 6 rotates (the output end of the rotary motor 6 is input to the cam mechanism 4 through the reducer for power input), the vertical rod 43 and the rotating disk 47 rotate synchronously. The vertical rod 43 is displaced along the axial direction of the rotary motor 6 by the interaction of the two parts 41a and 41b of the cam mechanism 46, so that the vertical rod 43 contacts the side of the cold-rolled stainless steel plate.

[0022] The contact point between the first scribing device 3 and the surface of the cold-rolled stainless steel and the contact point between the second scribing device 4 and the side of the cold-rolled stainless steel are on the same straight line along the width direction of the cold-rolled stainless steel. The contact point here is not a specific point, but can be within a set width range, because the rotation radius of the vertical rod 43 and the rotation radius of the rotating motor 6 need to be taken into account.

[0023] In this embodiment, a drive mechanism formed by combining an X-axis linear motor 1, a Y-axis linear motor 2, a Z-axis lead screw transmission assembly 5, and an X-axis double-chamber cylinder 9 enables the first scribing device 3 and the second scribing device 4 to move in multiple degrees of freedom. This allows the first and second scribing devices to accurately align with the defect positions on the surface of the cold-rolled stainless steel. The Z-axis lead screw transmission assembly 5 and the rotary motor 6 enable the first and second scribing devices 3 and 4 to simultaneously contact the surface and side of the stainless steel defect position and scribing, thereby marking the surface of the stainless steel strip. Even after the cold-rolled stainless steel strip is wound up, it can still provide rapid positioning of the defect position in subsequent stainless steel processing.

[0024] In this embodiment, the scribing of the first scribing device 3 and the second scribing device 4 is performed along a straight line, or in other words, it is superimposed with the conveying speed of the cold-rolled stainless steel conveyor belt. The length of the scribing is the range of the length of the surface defect.

[0025] In this embodiment, a spatial rectangular coordinate system is established with the vertical surface of the cold-rolled stainless steel conveyor belt as the Z-axis, the conveying direction of the cold-rolled stainless steel conveyor belt as the X-axis, and the width direction of the cold-rolled stainless steel conveyor belt as the Y-axis.

[0026] In this embodiment, the first scribing device 3 and the second scribing device 4 can be oil-based markers. However, since it is necessary to simultaneously scribble on the sides and surfaces of the non-cold-rolled stainless steel strip and to accurately mark the location of surface defects, it is necessary to scribble on the surface of the side of the cold-rolled stainless steel strip and the edge of the surface adjacent to the side to enhance the marking range along the length of the cold-rolled stainless steel conveyor belt.

[0027] To ensure the surface of the marked position is flat, guide roller groups 7 are installed on both the upstream and downstream sides of the cold-rolled stainless steel conveyor belt where the X-axis linear motor 1 is located.

[0028] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An online detection and marking system for surface defects in cold-rolled stainless steel strip, characterized in that, include: X-axis linear motor (1) is set on both sides of the cold-rolled stainless steel conveyor belt and along the conveying direction of the cold-rolled stainless steel conveyor belt; Y-axis linear motor (2) is set in the width direction of cold-rolled stainless steel conveyor belt, and the two ends of the Y-axis linear motor (2) are respectively connected to the movers of the corresponding X-axis linear motor (1); The first scribing device (3) is mounted on the mover of the Y-axis linear motor (2) via the Z-axis lead screw transmission assembly (5). An X-axis double-chamber cylinder (9) is provided on the mover of the Y-axis linear motor (2). The output end of the X-axis double-chamber cylinder (9) is connected to the Z-axis lead screw transmission assembly (5). The first scribing device (3) is vertically mounted on the nut pair of the Z-axis lead screw transmission assembly (5). The second scribing device (4) includes two units, which are respectively set at both ends of the same side of the Y-axis linear motor (2) and the Z-axis lead screw transmission assembly (5). The second scribing device (4) is connected to a rotary motor (6). The Z-axis lead screw drive assembly (5) and the rotary motor (6) synchronously drive the first scribing device (3) and the second scribing device (4) to work. The first scribing device (3) contacts the surface of the target defect of the cold-rolled stainless steel, and the second scribing device (4) contacts the side of the cold-rolled stainless steel. Furthermore, the contact point between the first scribing tool (3) and the surface of the cold-rolled stainless steel, and the contact point between the second scribing tool (4) and the side of the cold-rolled stainless steel, are on the same straight line along the width direction of the cold-rolled stainless steel.

2. The online detection and marking system for surface defects of cold-rolled stainless steel strip according to claim 1, characterized in that, A connecting rod (8) along the moving direction of the Y-axis linear motor (2) is provided on the surface of the same side as the Z-axis lead screw transmission assembly (5), and the fixed part of the Z-axis lead screw transmission assembly (5) is movably connected to the connecting rod (8). Two second marking devices (4) are respectively disposed at both ends of the connecting rod (8).

3. The online detection and marking system for surface defects of cold-rolled stainless steel strip according to claim 2, characterized in that, The second scribing device (4) includes a first horizontal bar (41) located above the side surface of the cold-rolled stainless steel, a second horizontal bar (42) located below the side surface of the cold-rolled stainless steel, and a vertical bar (43) located on the side of the cold-rolled stainless steel and connecting the ends of the first horizontal bar (41) and the second horizontal bar (42). An ink core (44) is provided on the surface of the cold-rolled stainless steel formed by the connection of the first horizontal bar (41), the second horizontal bar (42) and the vertical bar (43). A cam mechanism (46) is connected in the middle of the outer surface of the vertical rod (43). The cam mechanism (46) is connected to the output shaft of the rotating motor (6). A spring (45) is fitted on the cam mechanism (46). When the rotating motor (6) rotates, the cam mechanism (46) forms a whole that is connected to the first horizontal rod (41), the second horizontal rod (42) and the vertical rod (43) and rotates around the cam mechanism (46) as the rotation axis. At the same time, it moves along the length direction of the connecting rod (8). The vertical rod (43) contacts the side of the cold-rolled stainless steel. The first horizontal rod (41) and the second horizontal rod (42) contact the upper surface and the lower surface of the side of the cold-rolled stainless steel, respectively.

4. The online detection and marking system for surface defects of cold-rolled stainless steel strip according to claim 1, characterized in that, Guide roller sets (7) are provided on both the upstream and downstream sides of the cold-rolled stainless steel conveyor belt of the X-axis linear motor (1).

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