Surface detection device and detection method

Abstract

The present invention discloses a surface detection device and detection method, including a base, a support plate, the support plate can move up and down, the support plate is installed with a component, the component includes a fixed cover, the bottom of the fixed cover is provided with a countersink, the countersink is slidably connected with a sliding component, the sliding component is inserted into the countersink, the upper end of the base is provided with a support plate, the bottom of the sliding component can abut against the upper end of the support plate, the fixed cover is provided with an elastic component, the countersink includes an upper wall located at the top, the upper end of the elastic component abuts and seals with the upper wall, the lower end of the elastic component abuts with the upper end of the sliding component, a second cavity is formed between the elastic component and the upper wall, an extension rod is installed at the upper end of the fixed cover, a cavity one is provided in the extension rod, the cross-sectional size of the cavity one is smaller than the cross-sectional size of the cavity two, and the sliding component can push the bottom of the elastic component to reduce the volume of the cavity two when moving upward. The present invention provides a surface detection device and detection method, which can realize rapid detection, thereby better controlling the production quality of copper foil.

Description

Technical Field

[0001] The present invention relates to the technical field of surface detection equipment, and in particular to a surface detection device and a detection method. Background Art

[0002] Copper foil is a metal material with a thickness of 4-500μm, which is made of high-purity copper by electrolysis or rolling. Its main purpose is to make copper clad laminates (CCL), printed circuit boards (PCB) and lithium-ion batteries. According to the difference in processing methods, copper foil can be divided into electrolytic copper foil and rolled copper foil. Electrolytic copper foil refers to metal copper foil produced by electrolysis with copper as the main raw material. According to different application fields, electrolytic copper foil can be divided into lithium battery copper foil and electronic circuit copper foil (standard copper foil). The thickness of lithium battery copper foil is generally 6-20μm, which is used for lithium batteries in power, consumer, energy storage and other fields. For higher performance copper foil, its thickness is 4.5-8μm. After processing, the thickness of the copper foil needs to be tested. Due to its small thickness, the thickness detection change value of different points on the same copper foil is less than 0.5μm. The ordinary micrometer (minimum indication 1μm) does not change significantly, and the operator is more laborious when judging, which affects the detection efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a surface detection device and a detection method to achieve rapid detection, thereby better controlling the production quality of copper foil.

[0004] The present invention discloses a surface detection device, comprising a base and a support plate, the support plate can move up and down, the support plate is installed with a component, the component comprises a fixed cover, the upper end of the base is installed with a support disk, the fixed cover is located above the support disk, a countersunk hole is provided at the bottom of the fixed cover, the countersunk hole is slidably connected with a sliding component, the sliding component is inserted into the countersunk hole and can move up and down along the inner wall of the countersunk hole, the bottom of the sliding component can abut against the upper end of the support disk, the fixed cover is installed with an elastic component, the countersunk hole comprises an upper wall located at the top, the upper end of the elastic component abuts and seals with the upper wall, the lower end of the elastic component abuts with the upper end of the sliding component, a second cavity is formed between the elastic component and the upper wall, an extension rod is installed at the upper end of the fixed cover, a cavity one is provided in the extension rod, the bottom of the cavity one is connected with the top of the cavity two, the cross-sectional size of the cavity one is smaller than the cross-sectional size of the cavity two, and the sliding component can push the bottom of the elastic component to reduce the volume of the cavity two when moving upward.

[0005] Furthermore, a sphere is installed at the bottom of the sliding component. The sphere can rotate along its center, and the bottom of the sphere can abut against the upper end of the support plate.

[0006] Furthermore, a sleeve is installed at the bottom of the sliding component, and the bottom of the sphere passes downward through the sleeve. The sleeve is provided with a groove body, which is annular. The inner wall surface of the groove body matches the outer wall surface of the sphere along the circumferential direction. Part of the spherical surface of the upper part of the sphere abuts against the bottom of the sliding component, and part of the spherical surface of the lower part of the sphere abuts against the inner wall surface of the groove body.

[0007] Furthermore, the sliding component includes a supporting portion and an extension portion located below the supporting portion, the lower end surface of the supporting portion is parallel to and can abut against the upper end surface of the supporting plate, the extension portion passes through the supporting plate, and the extension portion includes a bottom rod located at the bottom, and the bottom rod is installed with a sleeve.

[0008] Furthermore, the lower end surface of the elastic component is in contact with the upper end surface of the sliding component, and the elastic component includes an extension ring located at the upper end, and the top of the extension ring is in contact with the upper wall and is sealed.

[0009] Furthermore, the extension ring is threaded along the axial direction.

[0010] Furthermore, a compression sleeve is slidably connected inside the extension rod. Once the cavity is filled with liquid, the compression sleeve can float on the liquid level and can move up and down following the up and down changes of the liquid level.

[0011] Furthermore, it also includes a fixing frame, on which a driving component is installed, and a connecting rod is connected to the bottom output end of the driving component, and the bottom of the connecting rod is fixed to the support plate.

[0012] Furthermore, liquid can be filled into the first and second cavities, and after the liquid is filled, the liquid level is set higher than the bottom of the first cavities.

[0013] The present invention also discloses a surface detection method, using a surface detection device, and the specific detection method is:

[0014] ① Pour liquid into the first and second chambers, the liquid level is higher than the bottom of the first chamber, and the bottom surface of the support part fits with the upper end surface of the support plate;

[0015] ② The ball presses downward against the upper end of the support plate, and the ball presses against the bottom of the sliding component and pushes the sliding component upward. The elastic component is compressed upward, the volume of the second chamber is reduced, and the liquid in the second chamber is pressed into the first chamber. The liquid level in the first chamber rises, and the position of the extension rod liquid level is recorded as the scale value R1;

[0016] ③The sphere is lifted upward to form a gap between it and the support plate. The upper end of the sphere is against the bottom of the sliding component, and the detection part is placed on the upper end of the support plate;

[0017] ④ The ball moves downward and presses against the upper end of the detection part, the sliding part pushes upward, the liquid level in the chamber 1 rises, and the position of the liquid level of the extension rod is recorded as the scale value R2. The difference between R2 and R1 is the thickness of the detection part at the detection point;

[0018] ⑤Take out the test piece;

[0019] Step ② is the step of recording the scale value R only during the first measurement. In subsequent continuous detections, only steps ①③④⑤ need to be repeated.

[0020] Beneficial effects of the present invention:

[0021] Due to the large cross-sectional area ratio between cavity one and cavity two, after the liquid in cavity two undergoes a slight volume change, the liquid level in cavity one rises significantly, making it convenient for the operator to quickly determine the thickness of each inspection point of the copper foil according to the liquid level change, so as to achieve the purpose of rapid detection and better control the production quality of the copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of an embodiment;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 for Figure 2 The enlarged view of point B in the middle;

[0025] Figure 4 for Figure 1 Sectional view along the MM direction.

[0026] Figure numerals: base 1, through hole 11, slide rail 2, support plate 3, protrusion 31, bearing 32, pressure ring 33, pressure block 331, fixed frame 4, driving component 41, connecting rod 42, support plate 43, assembly 5, fixed cover 51, countersunk hole 511, upper wall 512, extension rod 52, cavity one 521, sliding component 53, support part 531, extension part 532, bottom rod 5321, sleeve body 54, groove body 541, sphere 55, elastic component 56, extension ring 561, pressure sleeve 57, sealing plug 58, detection part 6, cavity two 7. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] like Figure 1As shown, a surface detection device includes a fixed frame 4, and driving components 41 are installed on both sides of the fixed frame 4. The driving component 41 is a cylinder. The output end of the driving component 41 passes downward through the fixed frame 4 and a connecting rod 42 is installed at the bottom. A support plate 43 is fixedly connected to the bottom of the connecting rod 42. The support plate 43 is disc-shaped. The connecting rod 42 is located on both sides of the upper end of the support plate 43. Under the drive of the driving component 41, the support plate 43 can move up and down.

[0029] like Figure 1 As shown, the support plate 43 is mounted with a component 5, combined with Figure 2 The component 5 includes a fixed cover 51, and a countersunk hole 511 is provided at the bottom of the fixed cover 51. The countersunk hole 511 is recessed and extends upward along the bottom surface of the fixed cover 51 to form a circular hole shape. The bottom surface of the fixed cover 51 is fixedly connected to the upper end surface of the support plate 43.

[0030] The countersunk hole 511 is slidably connected with a sliding component 53, and the sliding component 53 includes a support portion 531 and an extension portion 532 located below the support portion 531. The support portion 531 is a disc structure, and the support portion 531 is inserted into the countersunk hole 511 and can move up and down along the inner wall of the countersunk hole 511. The lower end surface of the support portion 531 is parallel to the upper end surface of the support plate 43, and the support portion 531 can abut against the upper end surface of the support plate 43 when it moves downward. The extension portion 532 extends downward along the bottom of the support portion 531 to form a cylindrical structure, and the extension portion 532 passes through the support plate 43. The extension portion 532 includes a bottom rod 5321 located at the bottom, and the bottom rod 5321 extends downward along the bottom surface of the extension portion 532 to form a cylindrical structure. Figure 3 As shown, the bottom rod 5321 is equipped with a sleeve 54, which is threadedly connected and inserted into the bottom rod 5321, and the bottom of the sleeve 54 extends out of the bottom of the bottom rod 5321. A ball 55 is installed between the sleeve 54 and the bottom rod 5321. Specifically, the bottom of the ball 55 passes through the sleeve 54 downward, and the bottom of the ball 55 is exposed from the sleeve 54. The sleeve 54 is provided with a groove 541, which is annular, and the inner wall surface of the groove 541 matches the outer wall surface of the ball 55 along the circumferential direction. The upper part of the ball 55 abuts against the bottom of the bottom rod 5321, and the lower part of the ball 55 abuts against the inner wall of the groove 541. The groove 541 holds up the ball 55 to prevent the ball 55 from sliding out, and the ball 55 can rotate along its center.

[0031] like Figure 2As shown, the fixed cover 51 is installed with an elastic component 56, and the elastic component 56 is located in the countersunk hole 511. The elastic component 56 includes a bottom disk and an extension ring 561 located at the upper end of the disk. The bottom disk of the elastic component 56 is a metal plate, and the extension ring 561 is a circular ring structure. The extension ring 561 is made of hard rubber and is fixedly connected to the bottom of the elastic component 56. The extension ring 561 is threaded along the axial direction. When the extension ring 561 is subjected to axial pressure, the extension ring 561 shrinks along the axial direction. Since the extension ring 561 is made of hard rubber, it is not easy for the extension ring 561 to shrink or expand in the radial direction.

[0032] The counterbore 511 includes an upper wall 512 at the top, the top of the extension ring 561 abuts against the upper wall 512 and is sealed, and the bottom surface of the bottom disk of the elastic component 56 fits with the upper end surface of the support portion 531 .

[0033] like Figure 2 As shown, a cavity 27 is formed between the elastic component 56 and the upper wall 512, and an extension rod 52 is installed on the upper end of the fixed cover 51. The extension rod 52 is a thin tube structure that passes through from top to bottom. The bottom of the extension rod 52 is inserted into the fixed cover 51 and sealed and fixed. A cavity 1 521 is provided in the extension rod 52. The bottom of the cavity 1 521 is connected to the top of the cavity 2 7. The cross-sectional size of the cavity 1 521 is smaller than the cross-sectional size of the cavity 2 7. When the sliding component 53 moves upward, it can push the bottom of the elastic component 56 to reduce the volume of the cavity 2 7. Liquid can be filled in the cavities 1 521 and the cavities 2 7, and after the liquid is filled, its liquid level L is set higher than the bottom of the cavity 1 521, so that after the volume of the cavity 2 7 becomes smaller, the elastic component 56 can immediately squeeze the liquid into the cavity 1 521, thereby changing the liquid level in the cavity 1 521.

[0034] like Figure 2 As shown, the extension rod 52 is made of a transparent material, and the outer wall of the extension rod 52 is engraved with scale values. A pressure sleeve 57 is slidably connected inside the extension rod 52. The pressure sleeve 57 can float on the upper end of the liquid level surface in the extension rod 52 and move up and down as the liquid level surface changes up and down. The pressure sleeve 57 presses the liquid in the extension rod 52, so that the operator can quickly read the scale value of the liquid level surface from the extension rod 52 when the liquid level surface in the extension rod 52 changes.

[0035] like Figure 2 As shown, the top of the extension rod 52 is sealed by a sealing plug 58 to prevent the internal liquid from evaporating and losing. The liquid can be poured into the extension rod 52 by opening the sealing plug 58.

[0036] like Figure 1As shown, the surface detection device also includes a base 1, and a slide rail 2 is installed at the bottom of the base 1. The base 1 can slide left and right along the slide rail 2. The base 1 is installed with a support plate 3. Specifically, the base 1 is provided with a through hole 11, and the bottom surface of the support plate 3 is in contact with the top surface of the base 1. The support plate 3 includes a convex body 31 located below the bottom surface, and the convex body 31 is inserted into the through hole 11. The convex body 31 and the through hole 11 are connected by a bearing 32, and the support plate 3 can rotate along its own axis.

[0037] like Figure 1 As shown, a pressure ring 33 is installed on the upper end of the support plate 3. The pressure ring 33 is threadedly connected and sleeved on the upper end of the support plate 3. The pressure ring 33 includes a pressure block 331 located above the support plate 3. Figure 4 The pressing block 331 forms a protrusion radially inward along the inner wall of the pressing ring 33. The surface of the supporting plate 3 is used to place the detection piece 6. The detection piece 6 is an electrolytic copper foil, which is in the form of a thin sheet with a thickness of 4.5 microns to 8 microns. The detection piece 6 is attached to the upper end surface of the supporting plate 3, and the pressing block 331 presses the upper end of the detection piece 6.

[0038] like Figure 1 As shown, the fixed cover 51 is located above the support plate 3, combined with Figure 3 The bottom of the sphere 55 can abut against the upper end of the support plate 3. When the detection piece 6 is placed on the upper end of the support plate 3, the bottom of the sphere 55 abuts against the upper end of the detection piece 6.

[0039] The detection method of the above-mentioned surface detection device is:

[0040] ① Such as Figure 2 As shown, liquid is poured into the first cavity 521 and the second cavity 7, and the liquid level L is higher than the bottom of the first cavity 521. The bottom of the elastic component 56 abuts against the support portion 531 so that the bottom surface of the support portion 531 fits with the upper end surface of the support plate 3.

[0041] ② Driven by the driving component 41, the ball 55 presses downward against the upper end of the supporting plate 3. At this time, the ball 55 presses against the bottom of the bottom rod 5321 and pushes the sliding component 53 upward. The elastic component 56 is compressed upward, the volume of the cavity 2 7 is reduced, and the liquid in the cavity 2 7 is pressed into the cavity 1 521. The liquid level in the cavity 1 521 rises, and the scale value of the extension rod 52 is recorded as R1.

[0042] ③ Such as Figure 1 , 2 As shown, driven by the driving component 41, the ball 55 is lifted upward and forms a gap with the support plate 3 again, the detection piece 6 is placed on the upper end of the support plate 3, and the pressure ring 33 is twisted downward so that the pressure block 331 presses the detection piece 6 to prevent the detection piece 6 from sliding.

[0043] ④ Such as Figure 1 , Figure 2As shown, driven by the driving component 41, the ball 55 moves downward and abuts against the upper end of the detection component 6. The ball 55 pushes the sliding component 53 upward, and the liquid level in the cavity 521 rises. The scale value R2 of the extension rod 52 is recorded. The difference between R2 and R1 is the thickness of the detection component 6 at the detection point.

[0044] ⑤ The ball 55 is lifted upward, the pressing block 331 is released and the detection member 6 is taken out.

[0045] By rotating the support plate 3 and moving the base 1 , the sphere 55 detects each position on the detection surface of the detection member 6 , thereby obtaining the thickness value and thickness change of each detection point on the detection surface.

[0046] Step ② is only used to record the scale value R1 during the first measurement. For subsequent continuous testing, you only need to repeat steps ①③④⑤.

[0047] In practical applications, such as Figure 2 As shown, the radius of cavity 2 7 is 100r, and the radius of cavity 1 521 is r (the radius ratio of cavity 2 7 to cavity 1 521 is not Figure 2 The cross-sectional area of ​​cavity 2 (π(100r)2) is 521(πr 2 ), when the thickness of the detection surface of the detection piece 6 changes by 0.0005mm, the liquid volume formed by the product of its cross-sectional area (π(100r)2) and the thickness change value (0.0005) in the cavity 2 7 is squeezed into the cavity 1 521, so that the liquid level change value of the cavity 1 521 is 5mm, and the position of the liquid level of the cavity 1 521 changes significantly. The operator can intuitively judge whether the thickness change of the detection surface of the detection piece 6 meets the requirements.

[0048] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A surface detection device, characterized in that: The invention comprises a base (1) and a support plate (43), wherein the support plate (43) is capable of moving up and down, and a component (5) is installed on the support plate (43), and the component (5) comprises a fixing cover (51), and a support plate (3) is installed on the upper end of the base (1), and the fixing cover (51) is located above the support plate (3), and a countersunk hole (511) is provided at the bottom of the fixing cover (51), and a sliding component (53) is slidably connected to the countersunk hole (511), and the sliding component (53) is inserted into the countersunk hole (511) and is capable of moving up and down along the inner wall of the countersunk hole (511), and the bottom of the sliding component (53) is capable of abutting against the upper end of the support plate (3), and an elastic component (56) is installed on the fixing cover (51), and the countersunk hole (511) is provided with a sliding component (53). ) comprises an upper wall (512) located at the top, the upper end of the elastic component (56) abuts against and seals the upper wall (512), the lower end of the elastic component (56) abuts against the upper end of the sliding component (53), a second cavity (7) is formed between the elastic component (56) and the upper wall (512), an extension rod (52) is installed at the upper end of the fixed cover (51), a cavity (521) is provided in the extension rod (52), the bottom of the cavity (521) is connected to the top of the cavity (7), the cross-sectional dimension of the cavity (521) is smaller than the cross-sectional dimension of the cavity (7), and when the sliding component (53) moves upward, it can push the bottom of the elastic component (56) to reduce the volume of the cavity (7); A sphere (55) is installed at the bottom of the sliding component (53); the sphere (55) can rotate along its center, and the bottom of the sphere (55) can abut against the upper end of the support plate (3); The support plate (3) is used to place the detection member (6); when the detection member (6) is placed on the upper end of the support plate (3), the bottom of the sphere (55) abuts against the upper end of the detection member (6); A sleeve (54) is also installed at the bottom of the sliding component (53), and the bottom of the ball (55) passes downward through the sleeve (54). The sleeve (54) is provided with a groove (541). The groove (541) is annular. The inner wall surface of the groove (541) matches the outer wall surface of the ball (55) along the circumferential direction. The upper part of the ball (55) is in contact with the bottom of the sliding component (53), and the lower part of the ball (55) is in contact with the inner wall of the groove (541). The sliding component (53) comprises a supporting portion (531) and an extending portion (532) located below the supporting portion (531); the lower end surface of the supporting portion (531) is parallel to and can abut against the upper end surface of the supporting plate (43); the extending portion (532) passes through the supporting plate (43); the extending portion (532) comprises a bottom rod (5321) located at the bottom; the bottom rod (5321) is used to mount the sleeve (54); The first cavity (521) and the second cavity (7) can be filled with liquid, and after the liquid is filled, the liquid level is set higher than the bottom of the first cavity (521).

2. A surface detection device according to claim 1, characterized in that: The lower end surface of the elastic component (56) is in contact with the upper end surface of the sliding component (53); the elastic component (56) comprises an extension ring (561) located at the upper end; the top of the extension ring (561) is in contact with the upper wall (512) and is sealed.

3. A surface detection device according to claim 2, characterized in that: The extension ring (561) is threaded along the axial direction.

4. A surface detection device according to claim 1, characterized in that: A pressing sleeve (57) is slidably connected inside the extension rod (52). After the first chamber (521) is filled with liquid, the pressing sleeve (57) can float on the liquid level and move up and down following the up and down changes of the liquid level.

5. The surface detection device according to claim 1, characterized in that: It also comprises a fixing frame (4), the fixing frame (4) is installed with a driving component (41), the bottom output end of the driving component (41) is connected with a connecting rod (42), and the bottom of the connecting rod (42) is fixed to the supporting plate (43).

6. A surface detection method, using the surface detection device according to any one of claims 1 to 5, characterized in that: The specific detection method is: ① Liquid is poured into the first cavity (521) and the second cavity (7), the liquid level is higher than the bottom of the first cavity (521), and the bottom surface of the support portion (531) is in contact with the upper end surface of the support plate (3); ② The sphere (55) presses downward against the upper end of the support plate (3), the sphere (55) presses against the bottom of the sliding component (53) and pushes the sliding component (53) upward, the elastic component (56) is compressed upward, the volume of the second chamber (7) is reduced, the liquid in the second chamber (7) is pressed into the first chamber (521), the liquid level in the first chamber (521) rises, and the position of the liquid level of the extension rod (52) is recorded as the scale value R1; ③ The sphere (55) is lifted upwards and forms a gap with the support plate (3), the upper end of the sphere (55) abuts against the bottom of the sliding component (53), and the detection element (6) is placed on the upper end of the support plate (3); ④ The sphere (55) moves downward and abuts against the upper end of the detection member (6), the sliding member (53) pushes upward, the liquid level in the chamber 1 (521) rises, and the position of the liquid level of the extension rod (52) is recorded as the scale value R2. The difference between R2 and R1 is the thickness of the detection member (6) at the detection point; ⑤ Taking out the detection element (6); Step ② is the step of recording the scale value R1 only during the first measurement. In subsequent continuous detections, only steps ①③④⑤ need to be repeated.

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