Off-line laser thickness gauge

Abstract

The utility model relates to an off-line laser thickness gauge, which comprises a rack, an object placing plate arranged on the rack, a through groove arranged on the object placing plate, a base arranged on the rack on one side of the object placing plate, two linear slide rails arranged on the base, a first slide block respectively arranged on each linear slide rail, a support seat arranged on the plurality of first slide blocks, and a second slide block arranged on the support seat. A supporting arm is arranged on the supporting seat, a first laser range finder is arranged on the supporting arm above the through groove, a second laser range finder is arranged on the supporting arm below the through groove, first connecting plates are arranged on the supporting arm, the number of the first connecting plates is two, and image capturing devices are arranged on the two first connecting plates respectively; the image capturing device comprises a prism, an industrial camera and a first mounting seat. The non-contact laser method is used for measuring the thickness of the pole piece and feeding back image data of a measured area at the same time. The utility model has the advantages of convenient use and wide market prospect.

Description

Technical Field

[0001] The utility model relates to the field of measuring equipment for the thickness of electrode plates, and particularly relates to an offline laser thickness gauge. Background Art

[0002] The coating thickness of the lithium-ion battery electrode plate is an important parameter for evaluating the working efficiency and stability of the lithium battery. The real-time high-precision measurement of the coating thickness of the lithium-ion battery electrode plate is the premise for realizing its control. The online measurement of the thickness is mainly based on non-contact measurement methods, including ultrasonic measurement method, ray measurement method, optical measurement method, capacitive measurement method, etc. The measurement of the electrode plate thickness includes online measurement and offline measurement. The offline measurement is a further re-calibration measurement of the electrode plate area with problems feedback by the online measurement, and higher precision is required. The method of using non-contact laser to measure the thickness is one of the principles adopted in the design of the thickness gauge. The instrument using non-contact laser to measure the thickness is a laser thickness gauge.

[0003] For the offline measurement of the coated electrode plate, a rectangular area is cut along the walking direction of the electrode plate to be measured, and then the thickness of this part is further measured. There are many influencing factors affecting the online feedback of the electrode plate thickness, including uneven slurry output from the die head and scratches. Generally, the general laser thickness gauge generally does not have a direct graphic feedback function. Therefore, it can only indirectly judge whether there is an abnormality in the thickness data of this area through the fluctuation value of the feedback data. Specifically, it is necessary to conduct further subsequent measurements to know whether it is caused by scratches or uneven coating thickness due to uneven slurry output from the die head. Therefore, if the laser thickness gauge can further provide the image data of the measured area while using non-contact laser to measure the thickness of the target area, it can further increase the basis for judging what causes the abnormal increase in the electrode plate thickness, so that the staff can know whether the uneven electrode plate thickness is caused by uneven slurry output from the die head or scratches, and can judge the depth of the scratches based on the image data and the thickness data given by the non-contact laser measurement. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the utility model provides an offline laser thickness gauge that can feedback the image data of the measured area while measuring the thickness of the electrode plate by using the non-contact laser method, so as to overcome the defects in the prior art.

[0005] The technical solution adopted by the present utility model is as follows: An off-line laser thickness gauge, which includes a frame. A placing plate is arranged on the frame. A strip-shaped through groove is formed on the placing plate. A base is arranged on the frame on one side of the placing plate. Two linear slide rails are arranged on the base. A first slider is respectively arranged on each linear slide rail. A support seat is arranged on several first sliders. A C-shaped support arm is arranged on the support seat. Both linear slide rails are parallel to the central axis of the through groove. A first laser rangefinder is arranged on the support arm above the through groove. A second laser rangefinder is arranged on the support arm below the through groove. Two first connecting plates are respectively arranged on the support arm above the through groove and the support arm below the through groove. The number of the first connecting plates is two. An image capturing device is respectively arranged on both first connecting plates. The image capturing device includes a prism, an industrial camera arranged in sequence along the direction from approaching the through groove to departing from the through groove, and a first mounting seat arranged outside the prism.

[0006] Preferably, groove-shaped photoelectric switches are respectively arranged on the base on both sides of the support seat. The number of the groove-shaped photoelectric switches is two. An induction plate is arranged on the support seat. The induction plate includes a connecting part and an induction part. The connecting part adopts an L-shaped plate structure. One end of the connecting part is mounted on the support seat. The induction part is located at the end of the connecting part far away from the support seat. The central axis of the induction part and the central axes of the inner cavities of the two groove-shaped photoelectric switches are in the same plane. The central axes of the inner cavities of the two groove-shaped photoelectric switches are on the same axis.

[0007] Preferably, a first position adjusting device is arranged between the second laser rangefinder and the support arm. The first position adjusting device includes a first connecting seat arranged on the support arm, a first sliding groove formed on the first connecting seat, a second slider arranged on the first sliding groove and capable of sliding along the extending direction of the first sliding groove, a second connecting plate arranged on the second slider and the second laser rangefinder, a U-shaped limiting plate arranged on the first connecting seat outside the first sliding groove, and a first adjusting bolt arranged on the limiting plate and the second slider.

[0008] Preferably, a third connecting plate is arranged on the first laser rangefinder. A fourth connecting plate is arranged on the support arm above the third connecting plate. A second position adjusting device is arranged on the fourth connecting plate. The second position adjusting device includes a second connecting seat arranged at one end of the fourth connecting plate facing the third connecting plate, a second sliding groove arranged at one end of the second connecting seat facing the third connecting plate and parallel to the first sliding groove, a third slider arranged on the second sliding groove and capable of sliding along the extending direction of the second sliding groove, a first groove parallel to the second sliding groove arranged on one surface of the third slider facing the second sliding groove, a first protrusion arranged on the second connecting seat on one side of the first groove, and a second adjusting bolt parallel to the second sliding groove arranged on the first protrusion and the third slider.

[0009] Preferably, a third position adjusting device is provided on the second position adjusting device and the third connecting plate. The third position adjusting device includes a third sliding groove perpendicular to the second sliding groove at one end of the third sliding block facing the third connecting plate, a fourth sliding block provided on one side of the third connecting plate facing the second sliding groove and capable of sliding along the extending direction of the third sliding groove, a second groove parallel to the third sliding groove at one end of the fourth sliding block facing the third sliding groove, a second protrusion provided on one side of the third sliding block facing the second groove, and a third adjusting bolt provided on the second protrusion and the fourth sliding block and parallel to the third sliding groove.

[0010] Preferably, a connecting arm is provided on the storage plate on one side of the through groove. The through groove extends along the length direction of the storage plate. The connecting arm is located outside the extending direction of the through groove. A second mounting seat is provided at the top of the connecting arm. A hinge shaft is provided on the second mounting seat and the connecting arm. An arc-shaped first adjusting groove is provided on the second mounting seat on one side of the hinge shaft. A fourth adjusting bolt is provided on the first adjusting groove and the connecting arm. A laser source is provided on the second mounting seat. A light shielding cover is provided at the output end of the laser source. A light transmitting groove is provided on the light shielding cover. The light transmitting groove adopts a cross-shaped groove structure. The light shielding cover and the laser source are in threaded connection.

[0011] Preferably, the storage plate adopts a plate-shaped structure made of steel. A pressing strip is provided on the storage plate. A third groove is provided on the pressing strip. A strip-shaped magnet is provided on the surface of the pressing strip facing the storage plate.

[0012] The beneficial effects of the present utility model are as follows: First, the present utility model realizes the measurement of the thickness of the pole piece by using the non-contact laser method through the first laser rangefinder and the second laser rangefinder. At the same time, the image data of the measurement area of the first laser rangefinder and the image data of the measurement area of the second laser rangefinder are fed back by using the industrial cameras installed on both sides of the through groove. Therefore, while giving the thickness data of the pole piece, the image data of the corresponding measurement area is given, which is more convenient for the staff to judge whether the uneven thickness of the pole piece coating is caused by scratches or uneven slurry output from the die head.

[0013] Secondly, the image capturing device of the present utility model includes a prism and an industrial camera arranged in sequence along the direction from near the through groove to far from the through groove, and a first mounting seat arranged outside the prism; installing the prism is convenient for refracting light, so as to facilitate using the industrial camera to capture the image data of the measurement area of the first laser rangefinder or the second laser rangefinder.

[0014] The present utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improving the work efficiency, having good social and economic benefits, and being a product easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic structural diagram of the present utility model.

[0016] Figure 2 is Figure 1 a partially enlarged schematic diagram of Detail A.

[0017] Figure 3 is Figure 1 a partially enlarged schematic diagram of Detail B.

[0018] Figure 4 is Figure 1 a partially enlarged schematic diagram of Detail C.

[0019] Figure 5 is Figure 1 a partially enlarged schematic diagram of Detail D.

[0020] Figure 6 This is a schematic structural diagram of the present utility model.

[0021] Figure 7 is Figure 6 a partially enlarged schematic diagram of Detail E.

[0022] Figure 8 This is a schematic structural diagram of the present utility model.

[0023] Figure 9 This is an exploded structural diagram of the components of the present utility model.

[0024] Figure 10 This is a schematic structural diagram of the pressure strip of the present utility model. Specific embodiments

[0025] Such as Figures 1 to 10As shown in the figure, an offline laser thickness gauge includes a frame 1, on which a placement board 2 is provided. A strip-shaped through groove 3 is formed on the placement board 2. A base 4 is provided on the frame 1 on one side of the placement board 2. The base 4 is made of marble. Two linear guide rails 5 are provided on the base 4. A first slider 6 is respectively provided on each linear guide rail 5. A support seat 7 is provided on several first sliders 6. A C-shaped support arm 8 is provided on the support seat 7. Both linear guide rails 5 are parallel to the central axis of the through groove 3. A first laser rangefinder 9 is provided on the support arm 8 above the through groove 3, and a second laser rangefinder 10 is provided on the support arm 8 below the through groove 3. First connecting plates 11 are respectively provided on the support arm 8 above the through groove 3 and the support arm 8 below the through groove 3. The number of the first connecting plates 11 is two. Image capturing devices are respectively provided on both first connecting plates 11. The image capturing device includes a prism 12, an industrial camera 13 arranged in sequence along the direction from near the through groove 3 to far from the through groove 3, and a first mounting seat 14 arranged outside the prism 12. A machine cover 55 is provided on the frame 1, and a hatch 56 is provided on the machine cover 55. A linear motor 57 is provided between the base 4 and the support seat 7 between the two linear guide rails 5. The linear motor 57 includes a mover and a stator magnetic rail. The stator magnetic rail is installed on the base 4 between the two linear guide rails 5. The extending direction of the stator magnetic rail is parallel to the two linear guide rails 5. The mover is installed on the support seat 7, and the mover is movably connected to the stator magnetic rail.

[0026] Groove type photoelectric switches 15 are respectively provided on the base 4 on both sides of the support seat 7. The number of the groove type photoelectric switches 15 is two. An induction plate 16 is provided on the support seat 7. The induction plate 16 includes a connecting part and an induction part. The connecting part is an L-shaped plate structure. One end of the connecting part is installed on the support seat 7. The induction part is located at the end of the connecting part far from the support seat 7. The central axis of the induction part and the central axes of the inner cavities of the two groove type photoelectric switches 15 are in the same plane, and the central axes of the inner cavities of the two groove type photoelectric switches 15 are on the same axis. It is convenient to feedback the maximum moving position of the support seat 7 through the two groove type photoelectric switches 15 and the induction plate 16.

[0027] A first position adjusting device is provided between the second laser rangefinder 10 and the support arm 8. The first position adjusting device includes a first connecting seat 17 provided on the support arm 8, a first sliding groove 18 opened on the first connecting seat 17, a second slider 19 provided on the first sliding groove 18 and capable of sliding along the extending direction of the first sliding groove 18, a second connecting plate 20 provided on the second slider 19 and the second laser rangefinder 10, a U-shaped limiting plate 21 provided on the first connecting seat 17 outside the first sliding groove 18, and a first adjusting bolt 22 provided on the limiting plate 21 and the second slider 19. An annular limiting groove is opened on the first adjusting bolt 22, a part of the limiting plate 21 is sleeved on the limiting groove, and the first adjusting bolt 22 is threadedly connected with the second slider 19. The first sliding groove 18 is perpendicular to the through groove 3. Thus, it is convenient to adjust the distance between the second laser rangefinder 10 and the central axis of the through groove 3 by using the first position adjusting device, so as to adjust the second laser rangefinder 10 to a preset detection position below the through groove 3.

[0028] A third connecting plate 23 is provided on the first laser rangefinder 9, a fourth connecting plate 24 is provided on the support arm 8 above the third connecting plate 23, and a second position adjusting device is provided on the fourth connecting plate 24. The second position adjusting device includes a second connecting seat 25 provided at one end of the fourth connecting plate 24 facing the third connecting plate 23, a second sliding groove 26 provided at one end of the second connecting seat 25 facing the third connecting plate 23 and parallel to the first sliding groove 18, a third slider 27 provided on the second sliding groove 26 and capable of sliding along the extending direction of the second sliding groove 26, a first groove 28 parallel to the second sliding groove 26 provided on one side of the third slider 27 facing the second sliding groove 26, a first protrusion 29 provided on the second connecting seat 25 on the side facing the first groove 28, and a second adjusting bolt 30 parallel to the second sliding groove 26 provided on the first protrusion 29 and the third slider 27. The second adjusting bolt 30 is movably connected with the third slider 27, and the second adjusting bolt 30 is threadedly connected with the first protrusion 29. Thus, it is convenient to adjust the distance between the second laser rangefinder 10 and the central axis of the through groove 3 by using the second position adjusting device, so as to adjust the first laser rangefinder 9 to a preset detection position above the through groove 3.

[0029] The second position adjusting device and the third connecting plate 23 are provided with a third position adjusting device. The third position adjusting device includes a third chute 31 perpendicular to the second chute 26 provided at one end of the third slider 27 facing the third connecting plate 23, a fourth slider 32 provided on one side of the third connecting plate 23 facing the second chute 26 and capable of sliding along the extending direction of the third chute 31, a second groove 33 parallel to the third chute 31 provided at one end of the fourth slider 32 facing the third chute 31, a second protrusion 34 provided on one side of the third slider 27 facing the second groove 33, and a third adjusting bolt 35 parallel to the third chute 31 provided on the second protrusion 34 and the fourth slider 32. The third chute 31 is perpendicular to the first chute 18 and parallel to the through groove 3. The third adjusting bolt 35 is movably connected to the fourth slider 32 and threadedly connected to the second protrusion 34. Thus, it is convenient to adjust the coaxiality of the first laser rangefinder 9 and the second laser rangefinder 10 by using the second position adjusting device and the third position adjusting device. The cross-sections of the inner cavities of the second chute 26 and the third chute 31 both adopt an inverted trapezoidal structure. The shape of part of the third slider 27 matches the shape of the inner cavity of the second chute 26, and the shape of part of the fourth slider 32 matches the shape of the inner cavity of the third chute 31.

[0030] Furthermore, the cross-section of the through groove 3 adopts a rectangular structure. A fifth slider 58 is provided on the through groove 3. The fifth slider 58 is movably connected to the through groove 3. The cross-section of the fifth slider 58 adopts a T-shaped structure. A second installation groove 59 is opened at the top of the fifth slider 58. Third installation grooves 60 are symmetrically opened on both sides of the second installation groove 59. The second installation groove 59 and the third installation grooves 60 are both parallel to the through groove 3. A plurality of limit blocks 61 are sequentially arranged at intervals along the extending direction of the second installation groove 59 in the second installation groove 59. Standard thickness detection pieces 62 are provided on the second installation groove 59 and the third installation grooves 60 between two adjacent limit blocks 61. The number of the standard thickness detection pieces 62 is several. The thicknesses of the several standard thickness detection pieces 62 gradually decrease along the direction from one end of the second installation groove 59 to the other end of the second installation groove 59.

[0031] Based on the light spots transmitted by the first laser rangefinder 9 and the second laser rangefinder 10 on the standard thickness detection pieces 62, it is also convenient to further adjust the positions of the first laser rangefinder 9 and the second laser rangefinder 10. And according to the thickness data of the standard thickness detection pieces 62, combined with the values comprehensively fed back by the first laser rangefinder 9 and the second laser rangefinder 10, it is further fed back whether the first laser rangefinder 9 and the second laser rangefinder 10 are adjusted to the preset positions.

[0032] On one side of the through slot 3, the storage plate 2 is provided with a connecting arm 36. The through slot 3 extends along the length direction of the storage plate 2. The connecting arm 36 is located outside the extending direction of the through slot 3. At the top of the connecting arm 36, a second mounting seat 37 is provided. On the second mounting seat 37 and the connecting arm 36, a hinge shaft 38 is provided. On the second mounting seat 37 on one side of the hinge shaft 38, an arc-shaped first adjustment slot 39 is provided. On the first adjustment slot 39 and the connecting arm 36, a fourth adjustment bolt 40 is provided. On the second mounting seat 37, a laser source 41 is provided. On the output end of the laser source 41, a light shielding cover 42 is provided. On the light shielding cover 42, a light transmission slot 43 is provided. The light transmission slot 43 adopts a cross-shaped slot structure composed of a horizontal slot and a vertical slot. The light shielding cover 42 is threadedly connected to the laser source 41. By adjusting the angle of the second mounting seat 37, the output direction of the laser source 41 is adjusted, and then the position of the light shielding cover 42 on the laser source 41 is adjusted, so that the central axis of the horizontal slot of the light transmission slot 43 is adjusted to be parallel to the through slot 3. At this time, one side of the measured pole piece is parallel to the light transmitted through the horizontal slot of the light transmission slot 43, and the position pointed by the vertical slot of the light transmission slot 43 is the moving direction of the first laser rangefinder 9 and the second laser rangefinder 10.

[0033] The storage plate 2 adopts a plate-shaped structure made of steel. On the storage plate 2, a pressing strip 44 is provided. On the pressing strip 44, a third groove 45 is provided. On the surface of the pressing strip 44 facing the storage plate 2, a strip-shaped magnet 46 is provided. Thus, it is convenient to use the pressing strip 44 to press the measured pole piece.

[0034] At the four corners of the frame 1, universal wheels 47 and supporting devices are respectively provided. The supporting device includes a supporting column 48 provided on the bottom surface of the frame 1, a fifth connecting plate 49 provided at the bottom end of the supporting column 48, a sixth connecting plate 50 provided on one side of the fifth connecting plate 49, a supporting foot pad 51 provided at the bottom end of the sixth connecting plate 50, a plurality of second adjustment slots 52 provided on the sixth connecting plate 50 along the direction from near the supporting foot pad 51 to far from the supporting foot pad 51, and a fifth adjustment bolt 53 provided on each second adjustment slot 52 and the fifth connecting plate 49. The number of the supporting devices is four. The four supporting devices are respectively located at the four corners of the frame 1. On the supporting foot pad 51, a first mounting groove 54 is provided. It is convenient for the four supporting devices to adjust the levelness of the frame 1, and then the position of the frame 1 is finally fixed by inserting the foot nail into the first mounting groove 54 on the supporting foot pad 51.

[0035] The usage method of this product is as follows, as Figures 1 to 10 shown, including the following steps:

[0036] S1. Use the first position adjustment device to adjust the distance between the output end of the second laser rangefinder 10 and the axis of the through slot 3. Then, use the second position adjustment device to adjust the distance between the output end of the first laser rangefinder 9 and the axis of the through slot 3. Then, use the third position adjustment device to further adjust the position of the output end of the first laser rangefinder 9 until the output end of the second laser rangefinder 10 is on the same axis. Finally, move the fifth slider 58 in the through slot 3 so that several standard thickness detection pieces 62 pass through between the first laser rangefinder 9 and the second laser rangefinder 10 in sequence. Determine whether the first laser rangefinder 9 and the second laser rangefinder 10 are in a normal working state according to the thickness data comprehensively fed back by the first laser rangefinder 9 and the second laser rangefinder 10 and the thickness data of several standard thickness detection pieces 62.

[0037] S2. Cut out the to-be-detected pole piece along the direction from the thinning area on one side of the to-be-detected pole piece to the thinning area on the other side of the to-be-detected pole piece. The cut-out to-be-detected pole piece is rectangular. Then, place the rectangular to-be-detected pole piece on the placement plate 2. Then, rotate the light-shielding cover 42 until the central axis of the transverse slot of the light-transmitting slot 43 is perpendicular to the central axis of the through slot 3. Then, turn on the laser source 41. The light output by the laser source 41 is transmitted through the light-transmitting slot 43 to the placement plate 2 to further adjust the position of the to-be-detected pole piece until one end of the to-be-detected pole piece is in contact with the light transmitted through the light-transmitting slot 43 to the placement plate 2. Finally, use several pressing strips 44 to press the to-be-detected pole piece on both sides of the through slot 3 onto the placement plate 2, thereby fixing the to-be-detected pole piece.

[0038] S3. After the to-be-detected pole piece is adjusted to the preset position and fixed, turn on the linear motor 57. The linear motor 57 drives the support seat 7 to move. The support seat 7 drives the support arm 8 and the first laser rangefinder 9 and the second laser rangefinder 10 on the support arm 8 to move synchronously. The first laser rangefinder 9 and the second laser rangefinder 10 measure from the thinning area at one end of the to-be-detected pole piece to the thinning area at the other end of the to-be-detected pole piece along the extending direction of the through slot 3 and feed back thickness data. While the thickness data is being fed back, the image information of the measurement area of the first laser rangefinder 9 is acquired by the industrial camera 13 above the through slot 3. The image information of the measurement area of the second laser rangefinder 10 is acquired by the industrial camera 13 below the through slot 3. The staff comprehensively judges the coating condition of the pole piece according to the image information fed back by the industrial camera 13 and the thickness information fed back by the first laser rangefinder 9 and the second laser rangefinder 10.

[0039] In this embodiment, the non-contact laser method is used to measure the thickness of the electrode sheet through the first laser rangefinder 9 and the second laser rangefinder 10. At the same time, the industrial cameras 13 installed on both sides of the through groove 3 are used to feedback the image data of the measurement area of the first laser rangefinder 9 and the image data of the measurement area of the second laser rangefinder 10, so as to give the image data of the corresponding measurement area while giving the electrode sheet thickness data, which is more convenient for the staff to judge whether the uneven thickness of the electrode sheet coating is caused by scratches or uneven slurry discharge from the die head.

[0040] The above-described embodiments are only preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. An offline laser thickness gauge, characterized in that: It includes a frame (1), on which a storage board (2) is arranged. A strip-shaped through groove (3) is formed on the storage board (2). A base (4) is arranged on the frame (1) on one side of the storage board (2). Two linear slide rails (5) are arranged on the base (4). A first slider (6) is respectively arranged on each linear slide rail (5). A support seat (7) is arranged on several first sliders (6). A C-shaped support arm (8) is arranged on the support seat (7). Both linear slide rails (5) are parallel to the central axis of the through groove (3). A first laser rangefinder (9) is arranged on the support arm (8) above the through groove (3). A second laser rangefinder (10) is arranged on the support arm (8) below the through groove (3). First connecting plates (11) are respectively arranged on the support arm (8) above the through groove (3) and the support arm (8) below the through groove (3). The number of the first connecting plates (11) is two. Image capturing devices are respectively arranged on the two first connecting plates (11). The image capturing device includes a prism (12), an industrial camera (13) arranged in sequence along the direction from near the through groove (3) to far from the through groove (3), and a first mounting seat (14) arranged outside the prism (12).

2. The offline laser thickness gauge according to claim 1, wherein: Groove type photoelectric switches (15) are respectively arranged on the base (4) on both sides of the support seat (7). The number of the groove type photoelectric switches (15) is two. An induction plate (16) is arranged on the support seat (7). The induction plate (16) includes a connecting part and an induction part. The connecting part adopts an L-shaped plate structure. One end of the connecting part is mounted on the support seat (7). The induction part is located at the end of the connecting part far from the support seat (7). The central axis of the induction part and the central axes of the inner cavities of the two groove type photoelectric switches (15) are in the same plane. The central axes of the inner cavities of the two groove type photoelectric switches (15) are on the same axis.

3. The offline laser thickness gauge according to claim 1, wherein: A first position adjusting device is arranged between the second laser rangefinder (10) and the support arm (8). The first position adjusting device includes a first connecting seat (17) arranged on the support arm (8), a first chute (18) formed on the first connecting seat (17), a second slider (19) arranged on the first chute (18) and capable of sliding along the extending direction of the first chute (18), a second connecting plate (20) arranged on the second slider (19) and the second laser rangefinder (10), a U-shaped limiting plate (21) arranged on the first connecting seat (17) outside the first chute (18), and a first adjusting bolt (22) arranged on the limiting plate (21) and the second slider (19).

4. The offline laser thickness gauge according to claim 3, wherein: A third connecting plate (23) is provided on the described first laser rangefinder (9). A fourth connecting plate (24) is provided on the support arm (8) above the third connecting plate (23). A second position adjusting device is provided on the fourth connecting plate (24). The second position adjusting device includes a second connecting seat (25) provided at one end of the fourth connecting plate (24) facing the third connecting plate (23), a second sliding groove (26) provided at one end of the second connecting seat (25) facing the third connecting plate (23) and parallel to the first sliding groove (18), a third sliding block (27) provided on the second sliding groove (26) and capable of sliding along the extending direction of the second sliding groove (26), a first groove (28) provided on one side of the third sliding block (27) facing the second sliding groove (26) and parallel to the second sliding groove (26), a first protrusion (29) provided on one side of the second connecting seat (25) facing the first groove (28), and a second adjusting bolt (30) provided on the first protrusion (29) and the third sliding block (27) and parallel to the second sliding groove (26).

5. The offline laser thickness gauge according to claim 4, wherein: A third position adjusting device is provided on the second position adjusting device and the third connecting plate (23). The third position adjusting device includes a third sliding groove (31) provided at one end of the third sliding block (27) facing the third connecting plate (23) and perpendicular to the second sliding groove (26), a fourth sliding block (32) provided on one side of the third connecting plate (23) facing the second sliding groove (26) and capable of sliding along the extending direction of the third sliding groove (31), a second groove (33) provided at one end of the fourth sliding block (32) facing the third sliding groove (31) and parallel to the third sliding groove (31), a second protrusion (34) provided on one side of the third sliding block (27) facing the second groove (33), and a third adjusting bolt (35) provided on the second protrusion (34) and the fourth sliding block (32) and parallel to the third sliding groove (31).

6. The offline laser thickness gauge according to claim 1, wherein: A connecting arm (36) is provided on the storage plate (2) on one side of the through groove (3). The through groove (3) extends along the length direction of the storage plate (2). The connecting arm (36) is located outside the extending direction of the through groove (3). A second mounting seat (37) is provided at the top end of the connecting arm (36). A hinge shaft (38) is provided on the second mounting seat (37) and the connecting arm (36). A first adjusting groove (39) in an arc shape is provided on the second mounting seat (37) on one side of the hinge shaft (38). A fourth adjusting bolt (40) is provided on the first adjusting groove (39) and the connecting arm (36). A laser source (41) is provided on the second mounting seat (37). A light shielding cover (42) is provided at the output end of the laser source (41). A light transmission groove (43) is provided on the light shielding cover (42). The light transmission groove (43) adopts a cross-shaped groove structure. The light shielding cover (42) and the laser source (41) are connected by threads.

7. The offline laser thickness gauge according to claim 1, wherein: The storage plate (2) adopts a plate-shaped structure made of steel. A pressing strip (44) is provided on the storage plate (2). A third groove (45) is provided on the pressing strip (44). A strip-shaped magnet (46) is provided on the side of the pressing strip (44) facing the storage plate (2).

Images