A cold-rolled plate flatness detection device

Abstract

The utility model relates to detection equipment technical field especially is related to a cold rolled plate flatness detection device, including frame and the transmission mechanism, detection mechanism and transverse moving mechanism of arrangement on the frame, detection mechanism includes fixed base, movable seat, mounting seat, contact sphere, vertical detection spare and two lateral detection spare, movable seat's side and fixed base elastic connection, mounting seat's top surface and movable seat bottom elastic connection, movable seat is arranged between two lateral detection spare, movable seat's side and its lateral detection spare fixed connection of side, vertical detection spare and movable seat's bottom fixed connection, contact sphere and mounting seat rotation connection, through contact sphere, mounting seat, movable seat three people's floating structure and in cooperation vertical detection spare and two lateral detection spare, can detect the vertical undulation of cold rolled plate and the wave edge defect of both sides of horizontal direction simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the flatness of cold-rolled steel sheets. Background Technology

[0002] Cold-rolled steel sheet is an important material in the manufacturing industry, and its surface flatness directly affects the quality and yield of subsequent stamping, coating and other processes. Therefore, rapid and accurate online detection of its flatness is crucial during the production of cold-rolled steel sheet.

[0003] Existing flatness testing methods are mainly divided into two categories: contact and non-contact. While non-contact testing does not damage the board surface, it is expensive, sensitive to the environment (such as vibration and oil contamination), and the results are easily affected by the reflective properties of the board surface, limiting its application in complex industrial environments. Traditional contact testing devices typically use fixed probes or rollers to contact the board surface, measuring the probe's displacement to reflect flatness. Although these devices are simple in structure and low in cost, they have significant drawbacks: First, the fixed contact method easily causes scratches when the board moves laterally, affecting product quality; second, most devices can only measure the vertical height at a single point or along a single path, failing to effectively detect and distinguish different types of flatness defects such as wavy edges (lateral warping) and central undulations (vertical undulations), resulting in a single testing dimension and incomplete information. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the problem that most existing devices can only measure the vertical height of a single point or a single path, and cannot effectively perceive and distinguish different types of flatness defects such as wavy edges (lateral warping) and central waves (vertical undulations) of the plate, and the detection dimension is single and the information is incomplete, a cold-rolled plate flatness detection device is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a cold-rolled plate flatness detection device, including a frame and a transmission mechanism, a detection mechanism and a transverse movement mechanism arranged on the frame. The transmission mechanism is used to transport the cold-rolled plate to be detected. The output end of the transverse movement mechanism is connected to the detection mechanism. The transverse mechanism is used to provide power for the detection mechanism to move laterally along the cold-rolled plate. The detection mechanism is located above the transmission mechanism and is used to detect the flatness of the cold-rolled plate. The testing mechanism includes a fixed base, a movable base, a mounting base, a contact ball, a vertical testing component, and two lateral testing components. The side of the movable base is elastically connected to the fixed base, the top surface of the mounting base is elastically connected to the bottom surface of the movable base, the movable base is positioned between the two lateral testing components, the side of the movable base is fixedly connected to the lateral testing component on its side, the vertical testing component is fixedly connected to the bottom surface of the movable base, and the contact ball is rotatably connected to the mounting base. Through the floating structure of the contact ball, mounting base, and movable base, and in conjunction with the vertical testing component and the two lateral testing components, the vertical undulations and transverse wavy edge defects of the cold-rolled sheet can be detected simultaneously, achieving a multi-dimensional and comprehensive evaluation of the sheet flatness, and providing more comprehensive and accurate testing information.

[0006] To address the challenge of achieving stable and precise automatic scanning of the cold-rolled sheet across its transverse direction to cover the entire width of the sheet, a transverse movement mechanism is further included. This mechanism comprises a transverse slide rail, a transverse slider that matches the transverse slide rail, and a transverse drive component. The transverse slide rail is fixedly connected to the frame, the transverse slide rail and the transverse slider are slidably connected, the transverse drive component and the transverse slider are fixedly connected, and the output end of the transverse drive component is drivenly connected to the transverse slide rail. The transverse drive component provides power for the transverse slider to reciprocate along the extension direction of the transverse slide rail.

[0007] To address the challenge of quickly and accurately adjusting the height of the testing mechanism to accommodate cold-rolled sheets of varying thicknesses and ensuring the appropriateness of the initial contact pressure, the testing device further includes an adjustment mechanism for adjusting the distance between the testing end of the testing mechanism and the transmission surface of the transmission mechanism. The adjustment mechanism includes a motor, a lead screw, and an adjustment seat. The lead screw and the horizontal slider are rotatably connected, the motor and the horizontal slider are fixedly connected, the output end of the motor is driven by the lead screw, the lead screw and the adjustment seat are threadedly connected, and the adjustment seat and the fixed seat are fixedly connected.

[0008] To address the issue of providing controllable lateral elastic support for the movable seat, ensuring detection sensitivity while preventing accidental activation due to free swaying, and enabling reset after detection, the detection mechanism further includes a lateral elastic element and a lateral adjusting rod. One end of the lateral adjusting rod is threadedly connected to the fixed seat, and the other end is slidably connected to the movable seat. The lateral elastic element is sleeved on the lateral adjusting rod, with one end abutting against the lateral adjusting rod and the other end abutting against the movable seat.

[0009] To address the issue of providing controllable vertical elastic support for the mounting base, enabling it to respond sensitively to plate undulations without causing accidental contact or damage due to its own weight or inertia, a further detection mechanism is included, comprising a vertical elastic element and a vertical adjusting rod. One end of the vertical adjusting rod is threadedly connected to the mounting base, and the other end is slidably connected to the movable base. The vertical elastic element is sleeved on the vertical adjusting rod, with one end of the vertical elastic element abutting against the vertical adjusting rod and the other end abutting against the movable base.

[0010] To address the issue of ensuring that the contact ball can rotate flexibly to reduce friction without falling off the mounting base and thus guaranteeing operational reliability, the mounting base is further equipped with a receiving cavity at its bottom for accommodating the contact ball. The diameter of the cavity opening is smaller than the diameter of the contact ball, the contact ball is arranged inside the receiving cavity, and the contact ball protrudes from the opening of the receiving cavity.

[0011] The beneficial effects of this utility model are as follows: The cold-rolled sheet flatness detection device provided by this utility model, through the floating structure of the contact ball, mounting base, and movable base, and in conjunction with the vertical detection component and two lateral detection components, can simultaneously detect the vertical undulations and wavy edge defects on both sides of the cold-rolled sheet, realizing a multi-dimensional and comprehensive evaluation of the sheet flatness, and providing more comprehensive and accurate detection information; using the ball as the contact end, the sliding friction is transformed into rolling friction, which greatly reduces the frictional resistance with the sheet surface and effectively prevents scratches on the surface of the cold-rolled sheet; at the same time, through the elastic connection of the vertical and lateral components, the detection mechanism can adaptively conform to the contour of the sheet surface, ensuring the stability and accuracy of the detection. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a utility model Figure 2 A cross-sectional view of the structure at the testing facility.

[0014] In the diagram: 1. Frame; 2. Transmission mechanism; 3. Testing mechanism; 31. Fixed seat; 32. Movable seat; 33. Mounting seat; 331. Receiving cavity; 34. Contact ball; 35. Vertical testing component; 36. Lateral testing component; 37. Lateral elastic element; 38. Lateral adjusting rod; 39. Vertical elastic element; 310. Vertical adjusting rod. 4. Lateral movement mechanism; 41. Lateral slide rail; 42. Lateral slider; 43. Lateral drive component; 5. Adjustment mechanism; 51. Motor; 52. Lead screw; 53. Adjustment seat. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0016] like Figure 1 This is a schematic diagram of the structure of the present invention. A cold-rolled steel plate flatness detection device includes a frame 1 and a transmission mechanism 2, a detection mechanism 3 and a transverse movement mechanism 4 arranged on the frame 1. The transmission mechanism 2 is a transmission belt and is used to transport the cold-rolled steel plate to be detected. The output end of the transverse movement mechanism 4 is connected to the detection mechanism 3 through a transmission mechanism. The transverse mechanism is used to provide power for the detection mechanism 3 to move laterally along the cold-rolled steel plate. The detection mechanism 3 is located above the transmission mechanism 2 and is used to detect the flatness of the cold-rolled steel plate. The testing mechanism 3 includes a fixed base 31, a movable base 32, a mounting base 33, a contact ball 34, a vertical testing element 35, and two lateral testing elements 36. The side of the movable base 32 is elastically connected to the fixed base 31, and the top surface of the mounting base 33 is elastically connected to the bottom surface of the movable base 32. The movable base 32 is arranged between the two lateral testing elements 36, and the side of the movable base 32 is fixedly connected to the lateral testing element 36 on its side. The vertical testing element 35 is fixedly connected to the bottom surface of the movable base 32, and the contact ball 34 is rotatably connected to the mounting base 33. The floating structure of the three movable seats 32, together with the vertical detection component 35 and two lateral detection components 36, can simultaneously detect the vertical undulations and wavy edge defects on both sides of the cold-rolled sheet, realizing a multi-dimensional and comprehensive evaluation of the flatness of the sheet, and providing more comprehensive and accurate detection information. By using a ball as the contact end, sliding friction is transformed into rolling friction, which greatly reduces the frictional resistance with the sheet surface and effectively prevents scratches on the surface of the cold-rolled sheet. At the same time, through the elastic connection of the vertical and lateral sides, the detection mechanism 3 can adaptively conform to the contour of the sheet surface, ensuring the stability and accuracy of the detection.

[0017] The vertical detection element 35 and the lateral detection element 36 can be detection elements such as linear displacement sensors and pressure sensors.

[0018] like Figure 1As shown, the transverse movement mechanism 4 includes a transverse slide rail 41, a transverse slider 42 that matches the transverse slide rail 41, and a transverse drive component 43. The transverse slide rail 41 is fixedly connected to the frame 1, the transverse slide rail 41 and the transverse slider 42 are slidably connected, and the transverse drive component 43 and the transverse slider 42 are fixedly connected. The transverse drive component 43 provides power for the transverse slider 42 to reciprocate along the extension direction of the transverse slide rail 41. The transverse movement mechanism 4 drives the detection mechanism 3 to reciprocate scanning along the transverse direction of the board. Combined with the longitudinal feeding of the transmission mechanism 2, it can realize automated full-coverage detection of the entire board surface. The independent adjustment mechanism 5 can quickly adjust the detection height, improving the versatility of the equipment.

[0019] Furthermore, the output end of the lateral drive component 43 is connected to the lateral slide rail 41 / lateral slider 42. The lateral drive component 43 can be a power element such as a cylinder, a lead screw transmission mechanism, or a motor-driven roller structure. When it is a cylinder, the output end of the lateral drive component 43 is fixedly connected to the lateral slider 42; when it is a motor-driven roller, the roller of the lateral drive component 43 is in contact with the lateral slide rail 41.

[0020] The detection device also includes an adjustment mechanism 5, which is used to adjust the distance between the detection end of the detection mechanism 3 and the transmission surface of the transmission mechanism 2. like Figure 1 As shown, the adjustment mechanism 5 includes a motor 51, a lead screw 52, ​​and an adjustment seat 53. The lead screw 52 is rotatably connected to the transverse slider 42, the motor 51 is fixedly connected to the transverse slider 42, the output end of the motor 51 is drive-connected to the lead screw 52, ​​the lead screw 52 is threadedly connected to the adjustment seat 53, and the adjustment seat 53 is fixedly connected to the fixed seat 31.

[0021] like Figure 2 , 3 As shown, the detection mechanism 3 includes a lateral elastic element 37 and a lateral adjusting rod 38. One end of the lateral adjusting rod 38 is threadedly connected to the fixed seat 31, and the other end is slidably connected to the movable seat 32. The lateral elastic element 37 is sleeved on the lateral adjusting rod 38. One end of the lateral elastic element 37 abuts against the lateral adjusting rod 38, and the other end abuts against the movable seat 32.

[0022] The testing mechanism 3 includes a vertical elastic element 39 and a vertical adjusting rod 310. One end of the vertical adjusting rod 310 is threadedly connected to the mounting base 33, and the other end is slidably connected to the movable base 32. The vertical elastic element 39 is sleeved on the vertical adjusting rod 310, with one end of the vertical elastic element 39 abutting against the vertical adjusting rod 310 and the other end abutting against the movable base 32.

[0023] The lateral elastic element 37 and the vertical elastic element 39 provide pre-tightening support for the movable seat 32 and the mounting seat 33, so that each component can remain in a neutral position when not in the testing state, avoiding collisions or accidental contact caused by free movement and shaking, thus ensuring the stability of the testing benchmark and the reliability of the testing data.

[0024] By using the lateral adjustment rod 38, the vertical adjustment rod 310, and the matching lateral elastic element 37 and vertical elastic element 39, the initial contact pressure of the detection mechanism 3 on the plate surface in the lateral and vertical directions can be precisely adjusted to adapt to plates of different materials and thicknesses, while maintaining the stability of the support.

[0025] like Figure 3 As shown, the bottom of the mounting base 33 is provided with a receiving cavity 331 for accommodating the contact ball 34. The diameter of the cavity opening of the receiving cavity 331 is smaller than the diameter of the contact ball 34. The contact ball 34 is arranged in the receiving cavity 331 and protrudes from the cavity opening of the receiving cavity 331, ensuring that the contact ball 34 can rotate flexibly to reduce friction and will not fall off the mounting base 33.

[0026] Working process: Based on the thickness of the cold-rolled sheet to be tested, the motor 51 of the adjusting mechanism 5 is started, driving the lead screw 52 to rotate, which in turn drives the adjusting seat 53 and the entire testing mechanism 3 fixed thereto to rise and fall until the contact ball 34 maintains an appropriate pre-contact pressure with the sheet surface. At this time, the lateral elastic element 37 and the vertical elastic element 39 provide stable support for the movable seat 32 and the mounting seat 33, keeping them in a preset neutral position; The transmission mechanism 2 is activated, driving the cold-rolled sheet forward at a constant speed along the longitudinal direction. At the same time, the transverse drive component 43 of the transverse transfer mechanism 4 is activated, driving the transverse slider 42 and the detection mechanism 3 on it to reciprocate along the transverse slide rail 41. If a wave or warp occurs, the contact ball 34 causes the mounting base 33 to compress or stretch the vertical elastic element 39, thereby generating a vertical displacement. This displacement is transmitted to the vertical detection element 35 through the movable seat 32, thus recording the vertical flatness data. After the test, under the supporting and restoring force of the vertical elastic element 39, the mounting base 33 returns to its neutral position. If a wavy edge appears on the board, the side of the board will push the contact ball 34 and the mounting base 33, thereby causing the movable base 32 to compress the lateral elastic element 37 on one side, resulting in lateral displacement. The displacement of the movable base 32 will directly drive the lateral detection element 36 fixed to it to move, thereby detecting the lateral wavy defect. After the wavy edge disappears, under the supporting and restoring force of the lateral elastic element 37, the movable base 32 returns to the neutral position. The vertical detection element 35 and the two lateral detection elements 36 transmit the displacement signals detected in real time to the control system. The control system combines the feeding speed of the transmission mechanism 2 and the lateral position signal of the transverse movement mechanism 4 to synthesize a three-dimensional flatness map of the entire surface of the cold-rolled sheet; After the inspection of one board is completed, the inspection mechanism 3 is reset under the action of the transverse mechanism 4, and each floating component is stabilized in a neutral position under the elastic structure, ready to inspect the next board.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for detecting the flatness of cold-rolled steel sheets, characterized in that, The device includes a frame (1) and a transmission mechanism (2), a detection mechanism (3) and a transverse mechanism (4) arranged on the frame (1). The transmission mechanism (2) is used to transport the cold-rolled plate to be detected. The output end of the transverse mechanism (4) is connected to the detection mechanism (3) in a transmission manner. The transverse mechanism is used to provide power for the detection mechanism (3) to move laterally along the cold-rolled plate. The detection mechanism (3) is located above the transmission mechanism (2) and is used to detect the flatness of the cold-rolled plate. The detection mechanism (3) includes a fixed seat (31), a movable seat (32), a mounting seat (33), a contact ball (34), a vertical detection element (35), and two lateral detection elements (36). The side of the movable seat (32) is elastically connected to the fixed seat (31), the top surface of the mounting seat (33) is elastically connected to the bottom surface of the movable seat (32), the movable seat (32) is arranged between the two lateral detection elements (36), the side of the movable seat (32) is fixedly connected to the lateral detection element (36) on its side, the vertical detection element (35) is fixedly connected to the bottom surface of the movable seat (32), and the contact ball (34) is rotatably connected to the mounting seat (33).

2. The cold-rolled sheet flatness detection device as described in claim 1, characterized in that: The transverse mechanism (4) includes a transverse slide rail (41), a transverse slider (42) that matches the transverse slide rail (41), and a transverse drive (43). The transverse slide rail (41) is fixedly connected to the frame (1), the transverse slide rail (41) and the transverse slider (42) are slidably connected, and the transverse drive (43) and the transverse slider (42) are fixedly connected. The transverse drive (43) is used to provide power for the transverse slider (42) to reciprocate along the extension direction of the transverse slide rail (41).

3. The cold-rolled sheet flatness detection device as described in claim 2, characterized in that: The detection device also includes an adjustment mechanism (5), which is used to adjust the distance between the detection end of the detection mechanism (3) and the transmission surface of the transmission mechanism (2); The adjustment mechanism (5) includes a motor (51), a lead screw (52), and an adjustment seat (53). The lead screw (52) and the transverse slider (42) are rotatably connected. The motor (51) and the transverse slider (42) are fixedly connected. The output end of the motor (51) is connected to the lead screw (52) via transmission. The lead screw (52) and the adjustment seat (53) are threadedly connected. The adjustment seat (53) and the fixed seat (31) are fixedly connected.

4. The cold-rolled sheet flatness detection device as described in claim 1, characterized in that: The detection mechanism (3) includes a lateral elastic element (37) and a lateral adjustment rod (38). One end of the lateral adjustment rod (38) is threadedly connected to the fixed seat (31), and the other end is slidably connected to the movable seat (32). The lateral elastic element (37) is sleeved on the lateral adjustment rod (38). One end of the lateral elastic element (37) abuts against the lateral adjustment rod (38), and the other end abuts against the movable seat (32).

5. The cold-rolled sheet flatness detection device as described in claim 1, characterized in that: The detection mechanism (3) includes a vertical elastic element (39) and a vertical adjusting rod (310). One end of the vertical adjusting rod (310) is threadedly connected to the mounting base (33), and the other end is slidably connected to the movable base (32). The vertical elastic element (39) is sleeved on the vertical adjusting rod (310). One end of the vertical elastic element (39) abuts against the vertical adjusting rod (310), and the other end abuts against the movable base (32).

6. The cold-rolled sheet flatness detection device as described in claim 1, characterized in that: The mounting base (33) has a receiving cavity (331) at the bottom for receiving the contact ball (34). The diameter of the cavity opening of the receiving cavity (331) is smaller than the diameter of the contact ball (34). The contact ball (34) is arranged in the receiving cavity (331) and protrudes from the cavity opening of the receiving cavity (331).

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