Laser thickness detector for film production

Abstract

The invention discloses a laser thickness detector for film production, and relates to the field of film detection, the laser thickness detector comprises a base body and a mounting rack above the base body, the front side of the mounting rack is provided with a laser measurement module, the rear side of the laser measurement module is connected with a first expansion piece, the measurement position of the laser measurement module is adjusted, and the first expansion piece is connected with a second expansion piece. A to-be-measured film body is arranged below the laser measurement module, a supporting roller is arranged below the to-be-measured film body, and a first guide roller is arranged on the left side of the supporting roller. According to the laser thickness detector for thin film production, planar thickness change detection can be performed on a thin film through the thickness change monitoring mechanism, when the thickness of the thin film changes, the position of the laser measurement module can be adjusted in cooperation with the first expansion piece, and the laser measurement module is adjusted to the thickness change position for thickness measurement; therefore, the film can be fully and effectively detected, the detection efficiency is higher, the laser detection result is more accurate, and meanwhile, the arrangement of detection points can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film detection, in particular to a laser thickness detector for thin film production. Background Art

[0002] When processing the film, in order to ensure the quality stability of the film and avoid quality problems caused by uneven thickness of the film, the thickness of the film can be tested after processing to determine whether the film meets the production standards.

[0003] Prior art 1 (application number CN202122408281.2, Chinese patent published on June 28, 2022) A film thickness detection device, including a machine body, a plurality of film rolling rollers, arranged between two groups of the machine bodies, a film roll is sleeved on the outside of the film rolling rollers, a plurality of measuring mechanisms, arranged on the outside of the film roll, a lens, arranged at the lower end of the measuring mechanism, and the outside of the measuring mechanism is movably connected to a movable shell. The device has strong anti-interference ability and is relatively stable. At the same time, the laser can be remotely controlled in real time with a fast response speed, which helps to improve product quality and ensure the consistency of product thickness; Prior art 2 (application number CN202223107904.3, Chinese patent published on May 12, 2023) A discoloration-resistant PVC film thickness detection device, comprising a bottom plate, a mounting plate 1 is installed in the middle of the top of the bottom plate, a support plate is fixedly connected to one side of the top of the bottom plate, a detection mechanism is provided on the top of the support plate, an unfolding mechanism is provided inside the mounting plate 2, the detection mechanism comprises a top plate, a motor 1 is installed in a groove inside the other side of the top plate, one side of the threaded rod 1 is fixedly connected to the output end of the motor 1, and the other side of the threaded rod 1 is rotatably connected to the top plate, a threaded sleeve 1 is sleeved on the outer side of the threaded rod 1, and a detection device body is installed at the bottom of the threaded sleeve 1. When detecting films with uneven thickness, more accurate detection results can be obtained, which solves the problem that the background device cannot conveniently perform thickness detection on other areas of the film, resulting in inaccurate detection results.

[0004] Although the current thickness detector can continuously detect the film, its detection range on the film is linear because the detection point is fixed. When the thickness changes on the edge of the film, it cannot be detected in time, which reduces the detection accuracy of the equipment. Setting a movable detection point for reciprocating detection has low efficiency and high energy consumption. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser thickness detector for film production to solve the problem raised in the above background technology that although the current thickness detector can continuously detect the film, since the detection point is fixed, its detection range on the film is linear. When the thickness changes on the edge of the film, it cannot be detected in time, which reduces the detection accuracy of the equipment. The setting of a movable detection point for reciprocating detection has low efficiency and high energy consumption.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a laser thickness detector for thin film production, comprising a base and a mounting frame above the base, a laser measuring module being provided on the front side of the mounting frame, a first telescoping device being connected to the rear side of the laser measuring module to adjust the measuring position of the laser measuring module, a film to be measured being provided below the laser measuring module, and a supporting roller being provided below the film to be measured, a first guide roller being provided on the left side of the supporting roller, a second guide roller being provided on the right side of the supporting roller, a collecting roller being provided on the right side of the second guide roller, the collecting roller being connected to the right end of the film to be measured, the first guide roller and the second guide roller pressing down the film to be measured, and a thickness change monitoring mechanism being provided below the first guide roller.

[0007] To further optimize the technical solution, a first support seat is provided at the rear end of the collecting roller, a second support seat is connected to the ends of the supporting roller and the second guide roller, and the rear end of the first guide roller is connected to the second support seat.

[0008] To further optimize the technical solution, a marking mechanism is provided on the outer side of the laser measurement module to mark the surface of the film to be measured.

[0009] To further optimize this technical solution, the marking mechanism includes a marking head and a second telescope. The marking head is arranged on the right side of the laser measurement module, and the upper end of the marking head is connected to the second telescope. The second telescope is connected to the laser measurement module, so that the marking head and the laser measurement module move synchronously.

[0010] To further optimize the present technical solution, the thickness change monitoring mechanism includes a detection wheel, a connecting frame, a movable block, a through slot, a mounting seat, a reset spring and a measuring mechanism. The detection wheels are evenly spaced below the first guide roller, and the middle part of the detection wheel is rotatably connected to the connecting frame. A movable block is fixed below the connecting frame. A through slot is provided below the movable block, and the bottom of the movable block is located inside the mounting seat and forms a nested connection between the mounting seat. The mounting seat and the base are connected. A reset spring is provided below the connecting frame to provide an upward thrust for the connecting frame. The measuring mechanism is provided on the outside of the movable block to monitor the movement of the movable block.

[0011] To further optimize this technical solution, the measuring mechanism includes a connecting seat and a laser rangefinder, the connecting seat is installed on the outside of the movable block located at the end, and the laser rangefinder is installed on both the upper and lower sides of the connecting seat.

[0012] To further optimize the technical solution, an auxiliary rope is fixed below the movable block, and a control panel is connected below the auxiliary rope, and the control panel is located below the mounting seat.

[0013] To further optimize this technical solution, a positioning cylinder is nested on the front side of the first guide roller, and a thickness adjustment mechanism is provided on the outside of the positioning cylinder to adjust the outer thickness of the positioning cylinder, and a movement control mechanism is provided on the front side of the positioning cylinder.

[0014] To further optimize the present technical solution, the thickness adjustment mechanism includes an adjusting cylinder, a winding shaft, an adjusting cloth, a torsion spring, a connecting plate and a transmission block. The adjusting cylinder is fixed to the outside of the positioning cylinder, and a nested structure is formed between the positioning cylinder and the first guide roller, and the interior of the positioning cylinder is connected to a transmission block for sliding back and forth. The transmission block and the servo motor are connected to control the rotation of the positioning cylinder. The surface of the adjusting cylinder is connected to the adjusting cloth, and the rear end of the adjusting cloth is wrapped with a winding shaft. A rotational connection is formed between the end of the winding shaft and the connecting plate, and a torsion spring is provided at the end of the winding shaft to provide a rotational reset force for the winding shaft.

[0015] To further optimize the present technical solution, the mobile control mechanism includes a third telescopic device, a third support seat, a connecting head and a connecting groove. The third telescopic device is installed on the front side of the connecting plate, and the front end of the third telescopic device is connected to the third support seat. The third support seat is fixed above the base. The rear side of the connecting plate is fixed with a connecting head. The rear end of the connecting head is designed as an enlarged structure, and a connecting groove is provided on the outside of the connecting head. The connecting groove is an annular structure opened on the front surface of the positioning cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The thickness change monitoring mechanism can be used to detect the surface thickness change of the film. When the thickness of the film changes, the position of the laser measurement module can be adjusted in conjunction with the first telescopic device, and the module can be adjusted to the thickness change position to measure the thickness. In this way, the film can be fully and effectively detected, the detection efficiency is higher, and the laser detection results are more accurate. At the same time, the setting of detection points can also be reduced.

[0018] (2) The support roller, the first guide roller and the second guide roller are arranged to provide support for the film to be tested, so that it remains stable and flat during testing, making subsequent testing more stable. In addition, the detection wheel below the first guide roller can provide pressure positioning effect for the film to be tested on the one hand, and can also detect its thickness change on the other hand.

[0019] (3) The movement of the detection wheel can be detected by the laser rangefinder in conjunction with the movement of the through slot and the movable block. When the thickness of the film to be measured changes, the detection wheel will drive the movable block to move, and the laser rangefinder will measure the position change of the movable block at the corresponding position, and then monitor it in conjunction with the movement of the laser measurement module.

[0020] (4) The front end of the film to be tested is positioned by the adjusting cylinder and the positioning cylinder, and the thickness of the adjusting cylinder can be adjusted. When its thickness is adjusted to be flush with the thickness of the film to be tested, it can provide stable support for the detection wheel, so that the subsequent detection wheel can maintain stable operation.

[0021] (5) The adjusting cloth can be rolled up by rotating the adjusting cylinder. The thickness of the adjusting cylinder can be increased when the adjusting cloth is rolled up, thereby adjusting the thickness of the adjusting cylinder. Subsequently, the adjusting cylinder reverses the winding shaft and can automatically roll up the adjusting cloth under the action of the torsion spring, so that the adjusting cloth on the surface of the adjusting cylinder remains in a tightened state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a side structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the film to be tested in the present invention.

[0025] Figure 4 This is a schematic diagram of the main structure of the collecting roller of the present invention.

[0026] Figure 5 This is a schematic diagram of the rear view structure of the first guide roller of the present invention.

[0027] Figure 6 This is a schematic side view of the structure of the first guide roller of the present invention.

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the detection wheel of the present invention.

[0029] Figure 8 It is a schematic diagram of the side sectional structure of the mounting seat of the present invention.

[0030] Figure 9 For the present invention Figure 8 The enlarged structural diagram at point a is shown in the figure.

[0031] Figure 10 It is a schematic diagram of the side sectional structure of the regulating cylinder of the present invention.

[0032] In the figure: 1. base; 2. mounting frame; 3. display; 4. laser measuring module; 5. first retractor; 6. film to be measured; 7. support roller; 8. first guide roller; 9. second guide roller; 10. collecting roller; 11. first support seat; 12. second support seat; 13. marking head; 14. second retractor; 15. detection wheel; 16. connecting frame; 17. movable block; 18. through slot; 19. mounting seat; 20. reset spring; 21. connecting seat; 22. laser rangefinder; 23. auxiliary rope; 24. control board; 25. positioning cylinder; 26. adjusting cylinder; 27. thickness measuring device; 28. winding shaft; 29. ​​adjusting cloth; 30. torsion spring; 31. connecting plate; 32. third retractor; 33. third support seat; 34. connecting head; 35. connecting slot; 36. transmission block. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Embodiment 1: The present invention provides the following technical solutions: a laser thickness detector for thin film production, such as Figure 1-3 As shown, it includes a base 1 and a mounting frame 2 above the base 1, a laser measuring module 4 is provided on the front side of the mounting frame 2, and a first telescoping device 5 is connected to the rear side of the laser measuring module 4 to adjust the measuring position of the laser measuring module 4, a film body 6 to be measured is provided below the laser measuring module 4, and a supporting roller 7 is provided below the film body 6 to be measured, and a first guide roller 8 is provided on the left side of the supporting roller 7, a second guide roller 9 is provided on the right side of the supporting roller 7, and a collecting roller 10 is provided on the right side of the second guide roller 9, and the collecting roller 10 is connected to the right end of the film body 6 to be measured, the first guide roller 8 and the second guide roller 9 press down the film body 6 to be measured, and a thickness change monitoring mechanism is provided below the first guide roller 8.

[0035] When in use, the film body 6 to be measured can be passed through the first guide roller 7, the support roller 8 and the second guide roller 9 in sequence, and the end of the film body to be measured and the collecting roller 10 are connected. The rear end of the collecting roller 10 is connected to the motor, and then the collecting roller 10 is driven by the motor to rotate to collect the film body 6 to be measured, so that it can be continuously detected. The thickness of the film body to be measured 6 above the support roller 7 is continuously measured by the laser measuring module 4. A display 3 is installed on the side of the mounting frame 2 to display the measurement data. When the thickness change monitoring mechanism detects a change in the thickness of the film body 6 to be measured, the first telescopic device 5 can control the laser measuring module 4 to move and measure the thickness at the thickness change position.

[0036] Example 2: Based on Example 1, Figure 4-5 As shown, it is further disclosed that the rear end of the collecting roller 10 is provided with a first support seat 11, the end of the support roller 7 and the second guide roller 9 are connected to the second support seat 12, the rear end of the first guide roller 8 is connected to the second support seat 12, and the outer side of the laser measurement module 4 is provided with a marking mechanism for marking the surface of the film 6 to be measured. The marking mechanism includes a marking head 13 and a second telescope 14. The marking head 13 is arranged on the right side of the laser measurement module 4, and the upper end of the marking head 13 is connected to the second telescope 14. The second telescope 14 is connected to the laser measurement module 4, so that the marking head 13 and the laser measurement module 4 move synchronously.

[0037] When the laser measurement module 4 moves, it will synchronously drive the marking head 13 to move. The marking head 13 can be a marker pen with a drawing effect. When the laser measurement module 4 detects the thickness change of the film 6 to be measured, the marking head 13 is controlled to move through the second telescopic device 14, so that the marking head 13 and the film 6 to be measured come into contact, and the thickness change of the film 6 to be measured is marked.

[0038] Example 3: Based on Example 1, Figure 6-10As shown, it is further disclosed that the thickness change monitoring mechanism includes a detection wheel 15, a connecting frame 16, a movable block 17, a through slot 18, a mounting seat 19, a reset spring 20 and a measuring mechanism. The detection wheels 15 are evenly spaced below the first guide roller 8, and the middle of the detection wheel 15 is rotatably connected to the connecting frame 16. A movable block 17 is fixed below the connecting frame 16. A through slot 18 is provided below the movable block 17, and the lower part of the movable block 17 is located inside the mounting seat 19 and forms a nested connection between the mounting seat 19. The mounting seat 19 is connected to the base 1. A reset spring 20 is provided below the connecting frame 16. 16 provides an upward thrust, and a measuring mechanism is arranged on the outside of the movable block 17 to monitor the movement of the movable block 17. The measuring mechanism includes a connecting seat 21 and a laser rangefinder 22. The connecting seat 21 is installed on the outside of the movable block 17 located at the end, and laser rangefinders 22 are installed on the upper and lower sides of the connecting seat 21. An auxiliary rope 23 is fixed below the movable block 17, and a control board 24 is connected below the auxiliary rope 23. The control board 24 is located below the mounting seat 19. A positioning cylinder 25 is nested on the front side of the first guide roller 8, and a thickness adjustment mechanism is provided on the outside of the positioning cylinder 25 to adjust the outer thickness of the positioning cylinder 25. In addition, a movement control mechanism is provided on the front side of the positioning cylinder 25. The thickness adjustment mechanism includes an adjustment cylinder 26, a winding shaft 28, an adjustment cloth 29, a torsion spring 30, a connecting plate 31 and a transmission block 36. The adjustment cylinder 26 is fixed to the outside of the positioning cylinder 25. A nested structure is formed between the positioning cylinder 25 and the first guide roller 8. The interior of the positioning cylinder 25 is connected to a transmission block 36 for sliding back and forth. The transmission block 36 is connected to the servo motor to control the rotation of the positioning cylinder 25. The surface of the adjustment cylinder 26 is connected to the adjustment cloth 29. The rear end of the adjustment cloth 29 is wound with the winding shaft 28. A rotation is formed between the end of the winding shaft 28 and the connecting plate 31. The third extension piece 32 is connected, and the end of the winding shaft 28 is provided with a torsion spring 30 for providing a rotational reset force for the winding shaft 28. The mobile control mechanism includes a third telescopic device 32, a third support seat 33, a connecting head 34 and a connecting groove 35. The third telescopic device 32 is installed on the front side of the connecting plate 31, and the front end of the third telescopic device 32 is connected to the third support seat 33. The third support seat 33 is fixed above the base 1. The connecting head 34 is fixed on the rear side of the connecting plate 31. The rear end of the connecting head 34 is designed as an enlarged structure, and a connecting groove 35 is provided on the outside of the connecting head 34. The connecting groove 35 is an annular structure opened on the front side surface of the positioning cylinder 25.

[0039] During the inspection, the film body 6 to be inspected first passes through the inspection wheel 15. When the overall thickness of the film body 6 to be inspected is consistent, the position of the movable block 17 is consistent. At this time, the data of the laser rangefinder 22 is a fixed value. When the local thickness of the film body 6 to be inspected changes, the inspection wheel 15 in contact with it moves vertically under the action of the reset spring 20, driving the movable block 17 to move. When the movable block 17 moves, the lower end of the movable block 17 or the lower end of the through slot 18 will block the measurement of the laser rangefinder 22, thereby changing its data. The distance change can be used to cooperate with the computer calculation program to reflect the thickness change position, and then the first telescopic device 5 is controlled to drive the laser measurement module 4 to work, adjust its detection position, and realize automatic adjustment of the detection position. More efficiently, the front end of the film to be measured 6 is positioned by the positioning cylinder 25, and the adjusting cylinder 26 can be adjusted to be consistent with the thickness of the lower end of the film to be measured 6, so that the detection wheel 15 at the end remains stable. When adjusting the thickness of the adjusting cylinder 26, the servo motor can control the transmission block 36 to drive the positioning cylinder 25 and the adjusting cylinder 26 to rotate. The adjusting cylinder 26 can reel in the adjusting cloth 29, thereby changing its own thickness to adapt to the detection needs of film bodies 6 to be measured with different thicknesses. The third telescopic device 32 cooperates with the connecting head 34 to synchronously control the position of the positioning cylinder 25 and the winding shaft 28 to adapt to the use of film bodies 6 to be measured with different widths. A thickness measuring device 27 is provided on the mounting seat 19 to measure the thickness of the adjusting cylinder 26, which is convenient for subsequent adjustment.

[0040] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "dispose," "install," and other conjunctions should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser thickness detector for thin film production, comprising a substrate (1) and a mounting frame (2) above the substrate (1), wherein a laser measurement module (4) is provided on the front side of the mounting frame (2); Its characteristics are: The rear side of the laser measurement module (4) is connected to a first telescoping device (5) for adjusting the measurement position of the laser measurement module (4); a film to be measured (6) is provided below the laser measurement module (4); a support roller (7) is provided below the film to be measured (6); a first guide roller (8) is provided on the left side of the support roller (7); a second guide roller (9) is provided on the right side of the support roller (7); a collecting roller (10) is provided on the right side of the second guide roller (9); the collecting roller (10) is connected to the right end of the film to be measured (6); the first guide roller (8) and the second guide roller (9) press down the film to be measured (6); and a thickness change monitoring mechanism is provided below the first guide roller (8).

2. The laser thickness detector for thin film production according to claim 1, characterized in that: The rear end of the collecting roller (10) is provided with a first support seat (11), the ends of the support roller (7) and the second guide roller (9) are connected to a second support seat (12), and the rear end of the first guide roller (8) is connected to the second support seat (12).

3. The laser thickness detector for thin film production according to claim 1, characterized in that: The outer side of the laser measurement module (4) is provided with a marking mechanism for marking the surface of the film body (6) to be measured.

4. The laser thickness detector for thin film production according to claim 3, characterized in that: The marking mechanism comprises a marking head (13) and a second telescopic device (14); the marking head (13) is arranged on the right side of the laser measurement module (4); the upper end of the marking head (13) is connected to the second telescopic device (14); the second telescopic device (14) and the laser measurement module (4) are connected so that the marking head (13) and the laser measurement module (4) move synchronously.

5. The laser thickness detector for thin film production according to claim 1, characterized in that: The thickness change monitoring mechanism comprises a detection wheel (15), a connecting frame (16), a movable block (17), a through slot (18), a mounting seat (19), a reset spring (20) and a measuring mechanism. The detection wheel (15) is evenly spaced and distributed below the first guide roller (8). The middle part of the detection wheel (15) is rotatably connected to the connecting frame (16). A movable block (17) is fixed below the connecting frame (16). A through slot (18) is provided below the movable block (17). The movable block (17) is located below the mounting seat (19) to form a nested connection. The mounting seat (19) is connected to the base (1). A reset spring (20) is provided below the connecting frame (16) to provide an upward thrust for the connecting frame (16). The measuring mechanism is provided outside the movable block (17) to monitor the movement of the movable block (17).

6. The laser thickness detector for thin film production according to claim 5, characterized in that: The measuring mechanism comprises a connecting seat (21) and a laser rangefinder (22); the connecting seat (21) is mounted outside a movable block (17) at an end portion, and the laser rangefinder (22) is mounted on both upper and lower sides of the connecting seat (21).

7. The laser thickness detector for thin film production according to claim 6, characterized in that: An auxiliary rope (23) is fixed below the movable block (17), and a control panel (24) is connected below the auxiliary rope (23). The control panel (24) is located below the mounting seat (19).

8. The laser thickness detector for thin film production according to claim 6, characterized in that: A positioning cylinder (25) is nested on the front side of the first guide roller (8), and a thickness adjustment mechanism is provided on the outside of the positioning cylinder (25) to adjust the outer thickness of the positioning cylinder (25), and a movement control mechanism is provided on the front side of the positioning cylinder (25).

9. The laser thickness detector for thin film production according to claim 8, characterized in that: The thickness adjustment mechanism comprises an adjustment cylinder (26), a winding shaft (28), an adjustment cloth (29), a torsion spring (30), a connecting plate (31) and a transmission block (36); the adjustment cylinder (26) is fixed on the outside of the positioning cylinder (25); a nested structure is formed between the positioning cylinder (25) and the first guide roller (8); the interior of the positioning cylinder (25) is connected to a transmission block (36) for sliding back and forth; the transmission block (36) is connected to a servo motor to control the rotation of the positioning cylinder (25); the surface of the adjustment cylinder (26) is connected to an adjustment cloth (29); the rear end of the adjustment cloth (29) is wound with a winding shaft (28); a rotation connection is formed between the end of the winding shaft (28) and the connecting plate (31); and a torsion spring (30) is provided at the end of the winding shaft (28) for providing a rotational reset force for the winding shaft (28).

10. The laser thickness detector for thin film production according to claim 9, characterized in that: The movement control mechanism comprises a third telescopic device (32), a third support seat (33), a connecting head (34) and a connecting groove (35); the third telescopic device (32) is mounted on the front side of the connecting plate (31); the front end of the third telescopic device (32) is connected to the third support seat (33); the third support seat (33) is fixed above the base (1); the connecting head (34) is fixed on the rear side of the connecting plate (31); the rear end of the connecting head (34) is designed as an enlarged structure; and the outer side of the connecting head (34) is provided with a connecting groove (35); the connecting groove (35) is annular and is opened on the front side surface of the positioning cylinder (25).

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