Strip detection equipment

Abstract

The utility model discloses strip detection equipment, and belongs to the technical field of detection equipment. According to the strip detection equipment, the first smoothing roller and the second smoothing roller are arranged between the two guide rollers in the conveying direction of the strip wound on the two guide rollers, and the first smoothing roller and the second smoothing roller are located on the same side of the strip in the axial direction of the guide rollers. The first smoothing roller and the second smoothing roller abut against the two sides, in the thickness direction, of the strip correspondingly, the strip can be smoothed, then the conveying stability of the strip located between the two guide rollers is improved, the strip located between the first smoothing roller and the second smoothing roller is detected through the detection mechanism, and the conveying efficiency of the strip is improved. And the detection precision of the strip can be improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a material testing device. Background Technology

[0002] In the battery manufacturing process, the electrode sheet is a key component that converts chemical energy into electrical energy, and its quality directly affects the battery performance. Therefore, the thickness of the electrode sheet needs to be tested during the electrode sheet manufacturing process.

[0003] In existing technologies, electrode thickness is measured by conveying the electrode in the form of a conveyor belt. However, the conveyor belt is prone to vibration during the conveying process, which leads to low thickness measurement accuracy and makes it difficult to meet production requirements. Utility Model Content

[0004] The purpose of this invention is to provide a material detection device that can improve the detection accuracy of material strips.

[0005] To achieve the above objectives, the following technical solution is provided:

[0006] Material testing equipment, including:

[0007] frame;

[0008] Two guide rollers are rotatably mounted on the frame and spaced apart from each other.

[0009] A smoothing mechanism includes a first smoothing roller and a second smoothing roller, both mounted on the frame; the first smoothing roller and the second smoothing roller are disposed between the two guide rollers along the conveying direction of the strip wound around the two guide rollers; the first smoothing roller and the second smoothing roller are located on the same side of the strip along the axial direction of the guide rollers; the first smoothing roller and the second smoothing roller respectively abut against both sides of the strip along its thickness direction;

[0010] An inspection mechanism is provided corresponding to the strip located between the first smoothing roller and the second smoothing roller.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The strip material inspection device of this utility model has a first smoothing roller and a second smoothing roller disposed between the two guide rollers along the conveying direction of the strip material wound around the two guide rollers. The first smoothing roller and the second smoothing roller are both located on the same side of the strip material along the axial direction of the guide rollers. By having the first smoothing roller and the second smoothing roller respectively abut against the two sides of the strip material along its thickness direction, the strip material can be smoothed, thereby improving the conveying stability of the strip material located between the two guide rollers. The detection mechanism can detect the strip material located between the first smoothing roller and the second smoothing roller, thereby improving the detection accuracy of the strip material. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the material detection device in an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the smoothing mechanism in an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the smoothing mechanism, the detection mechanism, and the first structure of the conveyor belt in this embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of the second structure of the smoothing mechanism, the detection mechanism, and the material conveyor in an embodiment of this utility model.

[0017] Figure label:

[0018] 100. Material strip; 101. Coated area; 102. Uncoated area;

[0019] 1. Frame; 2. Guide roller; 3. Smoothing mechanism; 31. First smoothing roller; 32. Second smoothing roller; 33. Mounting base; 34. First driving component; 35. Second driving component; 4. Detection mechanism; 411. Light spot; 412. Second lens; 42. Second driving assembly. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] like Figures 1 to 4 As shown, this embodiment provides a strip material detection device, including a frame 1, guide rollers 2, a smoothing mechanism 3, and a detection mechanism 4. Two guide rollers 2 are provided, both rotatably mounted on the frame 1, and spaced apart. The smoothing mechanism 3 includes a first smoothing roller 31 and a second smoothing roller 32, both mounted on the frame 1. Along the conveying direction of the strip material 100 wound around the two guide rollers 2, the first smoothing roller 31 and the second smoothing roller 32 are both located between the two guide rollers 2. The first smoothing roller 31 and the second smoothing roller 32 are both located on the same side of the strip material 100 along the axial direction of the guide rollers 2. The first smoothing roller 31 and the second smoothing roller 32 respectively abut against both sides of the strip material 100 along its thickness direction. The detection mechanism 4 is correspondingly arranged with the strip material 100 located between the first smoothing roller 31 and the second smoothing roller 32.

[0028] In this embodiment of the strip inspection equipment, along the conveying direction of the strip 100 wound around the two guide rollers 2, the first smoothing roller 31 and the second smoothing roller 32 are both disposed between the two guide rollers 2. By having the first smoothing roller 31 and the second smoothing roller 32 respectively abut against both sides of the strip 100 along its thickness direction, the strip 100 can be smoothed, thereby improving the conveying stability of the strip 100 located between the two guide rollers 2. And by using the inspection mechanism 4 to inspect the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, the inspection accuracy of the strip 100 can be improved.

[0029] Optionally, such as Figures 2 to 4 As shown, the smoothing mechanism 3 also includes a mounting base 33 disposed on the frame 1; a first smoothing roller 31 is rotatably disposed on the mounting base 33, the first smoothing roller 31 is a first eccentric roller, and the smoothing mechanism 3 also includes a first driving member 34, which is used to drive the first smoothing roller 31 to rotate. By driving the first eccentric roller to rotate with the first driving member 34, the position of the first eccentric roller is adjusted, and the first eccentric roller abuts against the strip 100, thereby achieving the purpose of adjusting the tension of the strip 100, which is beneficial to improving the conveying stability of the strip 100 located between the two guide rollers 2. Exemplarily, the first driving member 34 is fixed to the mounting base 33, and the first driving member 34 is a motor, such as a servo motor, which can improve the control accuracy of the rotation of the first smoothing roller 31, thereby facilitating more precise adjustment of the tension of the strip 100.

[0030] Optionally, the second smoothing roller 32 is rotatably mounted on the mounting base 33. The second smoothing roller 32 is a second eccentric roller. The smoothing mechanism 3 also includes a second driving member 35, which drives the second smoothing roller 32 to rotate. By driving the second eccentric roller to rotate using the second driving member 35, the position of the second eccentric roller is adjusted, and the second eccentric roller abuts against the strip 100, thereby adjusting the tension of the strip 100 and improving the conveying stability of the strip 100 located between the two guide rollers 2. Exemplarily, the second driving member 35 is fixed to the mounting base 33 and is a motor, such as a servo motor, which can improve the control accuracy of the rotation of the second smoothing roller 32, thereby facilitating more precise adjustment of the tension of the strip 100.

[0031] Optionally, the mounting base 33 is rotatably mounted on the frame 1 around a preset axis; the preset axis, the axis of the first smoothing roller 31, and the axis of the second smoothing roller 32 are all parallel to each other; the smoothing mechanism 3 also includes a base drive member, which drives the mounting base 33 to rotate around the preset axis, thereby enabling both the first smoothing roller 31 and the second smoothing roller 32 to revolve with the mounting base 33, so as to simultaneously adjust the positions of the first eccentric roller and the second eccentric roller. By making both the first eccentric roller and the second eccentric roller abut against the strip 100, the tension of the strip 100 is adjusted, which is beneficial to improving the conveying stability of the strip 100 located between the two guide rollers 2. Exemplarily, the base drive member is a motor, such as a servo motor, which can improve the control accuracy of the rotation of the mounting base 33, thereby facilitating more precise adjustment of the tension of the strip 100.

[0032] Specifically, by driving the mounting base 33 to rotate around a preset axis through the base drive component, the positions of the first eccentric roller and the second eccentric roller can be coarsely adjusted; then, by driving the first smoothing roller 31 to rotate through the first drive component 34, the position of the first eccentric roller can be finely adjusted; by driving the second smoothing roller 32 to rotate through the second drive component 35, the position of the second eccentric roller can be finely adjusted; thereby improving the position adjustment accuracy of the first eccentric roller and the second eccentric roller, which is conducive to more precise control of the tension of the strip 100, and thus greatly improving the conveying stability of the strip 100 located between the two guide rollers 2.

[0033] In this embodiment, the strip 100 includes a coated area 101 and an uncoated area 102, and the coated area 101 is provided with a coating. The detection mechanism 4 is used to detect the thickness of the coating. Specifically, the strip 100 is an electrode of a battery.

[0034] Optionally, there are two testing mechanisms 4, which are located on both sides of the strip 100 along its thickness direction, so that the coating on both sides of the strip 100 can be tested simultaneously, thereby improving the testing efficiency.

[0035] Optionally, the inspection mechanism 4 includes at least one inspection lens. The light emitted by the inspection lens can simultaneously illuminate the coated and uncoated areas 102. Specifically, the light emitted by the lens forms a light spot 411 when it shines on the strip 100. Part of the light spot 411 overlaps with the coating, and another part of the light spot 411 overlaps with the uncoated area 102. That is, the inspection lens can detect the distance a between the coating and the inspection lens, and the distance b between the uncoated area 102 and the inspection lens, without moving. The thickness of the coating can be obtained by calculating the difference between distance a and distance b, thereby simplifying the coating thickness inspection steps and improving inspection efficiency.

[0036] Specifically, the detection lens is a spectral lens. The light spot 411 emitted by the spectral lens has a larger area. The light spot 411 can simultaneously illuminate the coated and uncoated areas 102. The overlap area between the light spot 411 and the coating area, as well as the overlap area between the light spot 411 and the uncoated area 102, is relatively large, which is beneficial to improving the detection accuracy of the coating thickness.

[0037] For example, one detection lens may be provided. Optionally, the detection lens includes a first lens, and the detection mechanism 4 further includes a first driving component connected to the first lens. The first driving component can drive the first lens to move so that the axis of the first lens is perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, thereby making the light emitted by the first lens perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, which is beneficial to improving the detection accuracy of the coating thickness by the first lens.

[0038] It should be noted that the methods and means for determining whether the axis of the first lens is perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32 are existing technologies and will not be described in detail here.

[0039] Specifically, the first driving component can drive the first lens to move along the X, Y, and Z directions, and can also drive the first lens to rotate around the Y direction. The X direction is perpendicular to the axis of both guide rollers, the Y direction is parallel to the axis of the guide rollers, and the Z direction is perpendicular to the plane containing the axes of the two guide rollers. In other words, the X, Y, and Z directions are perpendicular to each other.

[0040] Exemplarily, multiple detection lenses can be provided. Optionally, the multiple detection lenses include two second lenses 412. The detection mechanism 4 also includes a second drive assembly 42 connected to the two second lenses 412. The second drive assembly 42 can drive the two second lenses 412 to move so that the axes of the two second lenses 412 are symmetrically arranged about a preset plane. The preset plane is perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, and the intersection point of the axes of the two second lenses 412 is located on the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32. That is, the intersection point of the axes of the two second lenses 412 with the preset plane is the same point, and this point is located on the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32. This allows the light emitted by the two second lenses 412 to intersect at this point, which is beneficial to improving the detection accuracy of the coating thickness by the second lenses 412.

[0041] Specifically, the two second lenses 412 are fixedly connected, and the second drive assembly 42 can drive the two second lenses 412 to move simultaneously along the X, Y, and Z directions, and can also drive the two second lenses 412 to rotate simultaneously around the Y direction.

[0042] It should be noted that the methods and means for determining that the axes of the two second lenses 412 are symmetrically set about a preset plane, the preset plane is perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, and the intersection of the axes of the two second lenses 412 is located on the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32 are all existing technologies and will not be described in detail here.

[0043] Furthermore, both the first drive assembly and the second drive assembly 42 employ multi-axis drives as used in the prior art, which will not be described in detail here.

[0044] Specifically, such as Figure 1 As shown, there are two detection mechanisms 4, located on opposite sides of the strip 100 along its thickness direction. Further, as... Figure 1 and Figure 4As shown, the detection mechanism 4 is equipped with two detection lenses, namely two second lenses 412. This means that the detection mechanism 4 does not have a first lens, thus reducing costs while ensuring the accuracy of coating thickness detection. In other embodiments, the detection mechanism 4 may also have one detection lens, namely a first lens. Alternatively, the detection mechanism 4 may have three detection lenses: one first lens and two second lenses 412. Specifically, the axis of the first lens is located on a preset plane, meaning that the intersection of the axes of the two second lenses 412 and the axis of the first lens is the same point, and this point is located on the strip 100 between the first smoothing roller 31 and the second smoothing roller 32, thereby further improving the accuracy of coating thickness detection.

[0045] Optionally, the straightness of the guide roller 2 is no more than 1.5μm, that is, the processing accuracy of the guide roller 2 is high, which can prevent the strip 100 from shaking and causing the distance between the strip 100 and the detection mechanism 4 to change, which is beneficial to improving the detection accuracy of the detection mechanism 4 on the strip 100.

[0046] Optionally, the radial runout of the guide roller 2 is no more than 1.5 μm (micrometer, symbol μm). In other words, the guide roller 2 has a high processing precision, which can prevent the strip 100 from shaking and causing the distance between the strip 100 and the detection mechanism 4 to change. This is beneficial to improving the detection accuracy of the detection mechanism 4 on the strip 100.

[0047] Optionally, the straightness of the first smoothing roller 31 is no more than 0.5μm, that is, the processing accuracy of the first smoothing roller 31 is high, which can prevent the strip 100 from shaking and causing the distance between the strip 100 and the detection mechanism 4 to change, which is beneficial to improving the detection accuracy of the detection mechanism 4 on the strip 100.

[0048] Furthermore, the radial runout of the first smoothing roller 31 is no more than 0.5 μm, which further improves the processing accuracy of the first smoothing roller 31. This prevents the strip 100 from shaking, which would cause a change in the distance between the strip 100 and the detection mechanism 4. This is beneficial to further improve the detection accuracy of the detection mechanism 4 on the strip 100.

[0049] Optionally, the straightness of the second smoothing roller 32 is no more than 0.5μm, that is, the processing accuracy of the second smoothing roller 32 is high, which can prevent the strip 100 from shaking and causing the distance between the strip 100 and the detection mechanism 4 to change, which is beneficial to improving the detection accuracy of the detection mechanism 4 on the strip 100.

[0050] Furthermore, the radial runout of the second smoothing roller 32 is no more than 0.5 μm, which further improves the processing accuracy of the second smoothing roller 32. This prevents the strip 100 from shaking, which would cause a change in the distance between the strip 100 and the detection mechanism 4. This is beneficial to further improve the detection accuracy of the detection mechanism 4 on the strip 100.

[0051] Optionally, such as Figure 3 As shown, the contact length L1 between the first smoothing roller 31 and the strip 100 along the axial direction of the first smoothing roller 31 ranges from 15mm to 45mm. If L1 is too short, the smoothing effect on the strip 100 will be poor, failing to achieve the goal of improving the conveying stability of the strip 100 located between the two guide rollers 2. If L1 is too long, due to the high processing precision of the first smoothing roller 31, the processing difficulty and material usage of the first smoothing roller 31 will increase, thereby increasing the cost. By limiting the length of L1 as described above, the cost of the first smoothing roller 31 can be reduced while improving the conveying stability of the strip 100 located between the two guide rollers 2. For example, L1 can be any value between 15mm and 45mm, such as 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, or 45mm.

[0052] Optionally, the contact length L2 between the second smoothing roller 32 and the strip 100 along the axial direction of the second smoothing roller 32 ranges from 15mm to 45mm. If L2 is too short, the smoothing effect on the strip 100 will be poor, failing to achieve the goal of improving the conveying stability of the strip 100 located between the two guide rollers 2. If L2 is too long, due to the high processing precision of the second smoothing roller 32, the processing difficulty and material usage will increase, thereby increasing the cost. By limiting the length of L2 as described above, the cost of the second smoothing roller 32 can be reduced while improving the conveying stability of the strip 100 located between the two guide rollers 2. For example, L2 can be any value between 15mm and 45mm, such as 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, or 45mm.

[0053] Optionally, the center distance between the first smoothing roller 31 and the second smoothing roller 32 can range from 15mm to 25mm. If the center distance between the first smoothing roller 31 and the second smoothing roller 32 is too large, the length of the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32 will be too long, thereby reducing the stability of the strip 100 conveying. If the center distance between the first smoothing roller 31 and the second smoothing roller 32 is too small, the length of the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32 will be too short, which is not conducive to the detection by the detection mechanism 4. Through the above limitations, the conveying stability of the strip 100 located between the two guide rollers 2 can be improved while facilitating the detection by the detection mechanism 4, thereby improving the detection accuracy of the detection mechanism 4. For example, the center distance between the first smoothing roller 31 and the second smoothing roller 32 can be any value between 15mm and 25mm, such as 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm or 25mm.

[0054] Optionally, the first smoothing roller 31 includes a first connecting end connected to the frame 1 and a first free end disposed opposite to the first connecting end; the first free end is provided with a first variable diameter section, and the outer diameter of the first variable diameter section gradually decreases along the direction from the first connecting end to the first free end. When the first smoothing roller 31 abuts against the strip 100, it will cause part of the strip 100 to bend. The provision of the first variable diameter section allows the bent part of the strip 100 to smoothly transition and connect with the surrounding strip 100 without causing large creases, thus protecting the strip 100.

[0055] Optionally, the second smoothing roller 32 includes a second connecting end connected to the frame 1 and a second free end disposed opposite to the second connecting end; the second free end is provided with a second variable diameter section, and the outer diameter of the second variable diameter section gradually decreases along the direction from the second connecting end to the second free end. When the second smoothing roller 32 abuts against the strip 100, it will cause part of the strip 100 to bend. The provision of the second variable diameter section allows the bent part of the strip 100 to smoothly transition and connect with the surrounding strip 100 without causing large creases, thus protecting the strip 100.

[0056] For example, the working principle of the strip inspection equipment in this embodiment is as follows:

[0057] First, the strip 100 is wound around the two guide rollers 2, and then the control seat drive unit drives the mounting base 33 to rotate, thereby coarsely adjusting the position of the first eccentric roller and the second eccentric roller; then, the control first drive unit 34 drives the first smoothing roller 31 to rotate, so as to finely adjust the position of the first eccentric roller; the second drive unit 35 drives the second smoothing roller 32 to rotate, so as to finely adjust the position of the second eccentric roller.

[0058] Then, the two second lenses 412 are moved by the second drive assembly 42 so that the axes of the two second lenses 412 are symmetrically set about a preset plane, the preset plane is perpendicular to the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32, and the intersection of the axes of the two second lenses 412 is located on the strip 100 located between the first smoothing roller 31 and the second smoothing roller 32.

[0059] Finally, the two second lenses 412 are controlled to emit light to detect the coating thickness.

[0060] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A strip detection apparatus, characterized by, The utility model relates to a strip flattening device, including: A rack; Two guide rollers, both of which are rotatably arranged on the rack, and are spaced apart; A flattening mechanism, which includes a first flattening roller and a second flattening roller, both of which are mounted on the rack; Along the conveying direction of the strip material arranged on the two guide rollers, both the first flattening roller and the second flattening roller are arranged between the two guide rollers; both the first flattening roller and the second flattening roller are located on the same side of the strip material along the axial direction of the guide rollers; the first flattening roller and the second flattening roller respectively abut the two sides of the strip material along the thickness direction thereof; A detection mechanism corresponding to the strip material located between the first flattening roller and the second flattening roller.

2. The tape detection apparatus according to claim 1, wherein The flattening mechanism further includes a mounting seat arranged on the rack; The first flattening roller is rotatably arranged on the mounting seat, and the first flattening roller is a first eccentric roller; the flattening mechanism further includes a first driving member for driving the first flattening roller to rotate; And / or, the second flattening roller is rotatably arranged on the mounting seat, and the second flattening roller is a second eccentric roller; the flattening mechanism further includes a second driving member for driving the second flattening roller to rotate.

3. The web detection apparatus according to claim 2, wherein The mounting seat is rotatably arranged on the rack about a preset axis; the flattening mechanism further includes a seat driving member for driving the mounting seat to rotate about the preset axis; the preset axis, the axis of the first flattening roller, and the axis of the second flattening roller are all parallel to each other.

4. The tape detection apparatus according to claim 3, wherein The strip material includes a coated area and a non-coated area, and the coated area is provided with a coating; The detection mechanism includes a detection lens, and the light emitted by the detection lens can simultaneously irradiate the coating and the non-coated area.

5. The web detection apparatus according to claim 4, wherein The detection lens is a spectral lens.

6. The web detection apparatus according to claim 4, wherein The detection mechanism includes a plurality of detection lenses. The plurality of detection lenses includes a first lens, and the detection mechanism further includes a first driving assembly connected with the first lens; the first driving assembly can drive the first lens to move, so that the axis of the first lens is perpendicular to the strip material located between the first flattening roller and the second flattening roller; And / or, the plurality of detection lenses includes two second lenses, and the detection mechanism further includes a second driving assembly connected with the two second lenses; the second driving assembly can drive the two second lenses to move, so that the axes of the two second lenses are symmetrically arranged about a preset plane; the preset plane is perpendicular to the strip material located between the first flattening roller and the second flattening roller; and the intersection of the axes of the two second lenses is located on the strip material between the first flattening roller and the second flattening roller.

7. The web detection apparatus of claim 1, wherein The first flattening roller includes a first connecting end connected with the rack and a first free end arranged opposite to the first connecting end; the first free end is provided with a first variable-diameter portion, and the outer diameter of the first variable-diameter portion gradually decreases in the direction from the first connecting end to the first free end; And / or, the second smoothing roller comprises a second connecting end connected with the rack, and a second free end arranged opposite to the second connecting end; the second free end is provided with a second variable diameter part, and the outer diameter of the second variable diameter part gradually decreases in the direction from the second connecting end to the second free end.

8. The strip detection apparatus according to any one of claims 1 to 7, characterized in that, The center distance between the first smoothing roller and the second smoothing roller ranges from 15 mm to 25 mm.

9. The strip detection apparatus according to any one of claims 1 to 7, characterized in that, The straightness of the guide roller is not greater than 1.5 μm; And / or, the radial runout of the guide roller is not greater than 1.5 μm; And / or, the straightness of the first smoothing roller is not greater than 0.5 μm; And / or, the radial runout of the first smoothing roller is not greater than 0.5 μm; And / or, the straightness of the second smoothing roller is not greater than 0.5 μm; And / or, the radial runout of the second smoothing roller is not greater than 0.5 μm.

10. The web detection apparatus according to claim 9, wherein In the axial direction of the first smoothing roller, the contact length L1 of the first smoothing roller with the strip ranges from 15 mm to 45 mm; And / or, in the axial direction of the second smoothing roller, the contact length L2 of the second smoothing roller with the strip ranges from 15 mm to 45 mm.

Images