Automatic film thickness measuring device

Abstract

The utility model discloses a kind of automatic film thickness measuring device, including walking frame, machine case, transverse adjusting assembly, unwinding assembly and thickness measuring assembly;Four electric supporting rods are installed on the side wall of the both sides of walking frame, PLC controller is installed on the front surface of machine case, the top of machine case is installed with transverse adjusting assembly, the upper surface one side of transverse adjusting assembly is installed with unwinding assembly, the upper surface other side of transverse adjusting assembly is installed with winding assembly, the upper surface of transverse adjusting assembly is installed with thickness measuring assembly.The utility model realizes the full-process automation of film from unwinding, thickness measuring to winding by PLC controller centralized control the operation of whole device, significantly reduces manual intervention, improves measurement efficiency;While combined with high-precision laser ranging assembly and non-contact measurement method, effectively avoid the error and film damage that traditional measurement mode can bring, ensure the accuracy and reliability of measurement result.

Description

Technical Field

[0001] This utility model relates to the field of thin film measurement and testing technology, specifically to an automatic thin film thickness measuring device. Background Technology

[0002] In thin film production and application, thickness is a critical physical parameter that directly affects the film's performance and quality. For example, in the electronics industry, the uniformity and precision of the film thickness used in flexible displays significantly impacts display quality; uneven thickness can lead to screen brightness imbalances, color deviations, and even localized touch malfunctions. In the packaging industry, film thickness determines the barrier properties and strength of the packaging; thicker films enhance the barrier against oxygen and moisture, extending food shelf life. Furthermore, in the photovoltaic field, the thickness of the backsheet film for solar cells directly affects photoelectric conversion efficiency and lifespan; excessive thickness increases light reflection loss, while insufficient thickness can lead to decreased insulation performance and the risk of moisture penetration. In the medical industry, the uniformity of pharmaceutical packaging film thickness is crucial for ensuring drug stability; thickness deviations can cause drug oxidation or contamination, while also affecting the film's heat-sealing strength and puncture resistance, thus impacting the packaging's sealing performance and safety.

[0003] The shortcomings of existing thin film thickness measurement devices: 1. Traditional thin film thickness measurement methods mainly include mechanical contact measurement and manual measurement. The accuracy and repeatability of the measurement results are poor, making it difficult to meet the needs of large-scale production and high-precision measurement. 2. Traditional film thickness measurement methods are difficult to adapt to the measurement needs of films of different specifications and are inconvenient to adjust; therefore, it is necessary to propose an automatic film thickness measurement device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an automatic film thickness measuring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic film thickness measuring device, comprising a walking frame, a housing, a lateral adjustment component, an unwinding component, and a thickness measuring component; four electric support rods are installed on the two side walls of the walking frame, providing support from multiple directions, significantly enhancing the overall structure's anti-interference capability, ensuring the stability of the device during measurement, and laying the foundation for high-precision measurement; a housing is installed on the upper surface of the walking frame, and a PLC controller is installed on the front surface of the housing; the PLC controller has powerful data processing and control functions, and can precisely control the operation of the entire thickness measuring device through a preset program; the operator can input commands through the PLC controller to adjust the operating parameters of the thickness measuring device; a lateral adjustment component is installed on the top of the housing, and an unwinding component is installed on one side of the upper surface of the lateral adjustment component; the unwinding component is used to place the film roll to be measured and can stably release the film, ensuring the smooth operation of the film during the measurement process; while the lateral adjustment component has a precise adjustment function, adjusting its position... The device allows for precise positioning of the unwinding assembly and subsequent thickness measuring assembly to adapt to the measurement needs of films of different widths or positions. A winding assembly is installed on the other side of the upper surface of the lateral adjustment assembly. The winding assembly is used to collect the film after thickness measurement. It not only stably winds up the film, preventing wrinkles or slack during winding, but also coordinates with the working rhythm of the unwinding and thickness measuring assemblies to ensure the continuity and efficiency of the entire measurement process. The film body is installed between the unwinding and winding assemblies, allowing it to move smoothly between them for accurate thickness measurement. This achieves automated and high-precision film thickness detection, improving measurement efficiency and reducing the difficulty and error of manual operation. It provides strong support for quality control and cost savings in film production. The thickness measuring assembly, as the core component of the device, has high-precision measurement capabilities, enabling real-time and accurate acquisition of the film body's thickness data during movement.

[0006] Preferably, the lateral adjustment component is provided with a lateral sliding plate. A first lateral slide rail is installed on one side of the upper surface of the lateral sliding plate, and a second lateral slide rail is installed on the other side of the upper surface of the lateral sliding plate. The first and second lateral slide rails are arranged in parallel, providing stable guidance for the lateral movement of the thickness measuring component. This ensures that the thickness measuring component can move smoothly along a predetermined trajectory during the measurement process, which not only improves the accuracy of the measurement but also effectively avoids measurement errors caused by shaking or offset. At the same time, through the cooperative use of the lateral sliding plate with the first and second lateral slide rails, precise positioning and rapid movement of the thickness measuring component in the lateral direction are achieved, further improving the automatic thickness measurement of films. The device improves measurement efficiency and accuracy by using a transverse screw installed between the two end plates of the second transverse slide rail. A second transverse sliding rod is mounted on the output end of the transverse motor on the transverse screw, and is threadedly connected to it. When the transverse motor starts, it drives the transverse screw to rotate, which in turn drives the second transverse sliding rod to move along the screw's axial direction, thus enabling precise transverse displacement adjustment of the thickness measuring component. Furthermore, the coordinated use of the second transverse sliding rod and the transverse screw makes the thickness measuring component move more smoothly, effectively avoiding measurement errors caused by shaking or offset, and providing stronger support for quality control and cost savings in film production.

[0007] Preferably, the unwinding assembly is provided with a first support rod and a second support rod. An unwinding roller is installed between the upper inner ends of the first and second support rods. The unwinding roller is used to hold the film roll to be measured. The arrangement of the first and second support rods not only provides stable support for the unwinding roller but also facilitates the adjustment of the unwinding roller's position to accommodate film rolls of different widths and thicknesses. The unwinding roller is mounted on the output end of the unwinding motor. The drive of the unwinding motor enables the unwinding roller to rotate smoothly and at a uniform speed, thereby ensuring continuous and uniform unwinding of the film. The unwinding motor is mounted on the outer wall of the first support rod. A height adjustment slide rod is installed between the lower inner ends of the first and second support rods. A height adjustment slide rod is installed at its bottom. The system features two adjustable damping components. A leveling roller is mounted on top of the height adjusting slide. The height of the leveling roller can be flexibly adjusted according to the film's thickness and tension. By operating the adjustable damping components, the contact pressure between the leveling roller and the film can be precisely controlled, ensuring the film remains flat during unwinding and preventing wrinkles or unevenness from affecting subsequent thickness measurement accuracy. The use of the leveling roller further improves the film's flatness, laying a solid foundation for accurate subsequent measurements. Furthermore, the combined use of the height adjusting slide and the adjustable damping components makes the entire unwinding assembly more flexible and convenient in adapting to different film specifications, effectively improving the equipment's versatility and practicality.

[0008] Preferably, the thickness measuring component is equipped with a first transverse sliding rod and a second transverse sliding rod, which are respectively mounted on a first transverse slide rail and a second transverse slide rail. The arrangement of the first and second transverse sliding rods allows the thickness measuring component to move horizontally along the first and second transverse slide rails, thereby covering the entire width range of the film and ensuring comprehensive and accurate measurement. An upper measuring motor and a lower measuring motor are mounted on the outer wall of the second transverse sliding rod, driving the thickness measuring component to move vertically up and down to measure film thickness at different positions. This multi-dimensional sliding configuration significantly improves the efficiency and accuracy of film thickness measurement, enabling the automatic film thickness measuring device to be widely applied in various film production and processing fields, meeting the needs of different industries for precise control of film thickness.

[0009] Preferably, an upper longitudinal screw and a lower longitudinal screw are respectively installed on the output ends of the upper and lower ranging motors. The upper and lower longitudinal screws are installed between the first and second transverse sliding rods. An upper laser ranging component and a lower laser ranging component are respectively installed on the first and second transverse sliding rods. The upper and lower longitudinal screws, in cooperation with the upper and lower ranging motors, can drive the upper and lower laser ranging components to move precisely in the vertical direction. This not only ensures the stability and accuracy of the ranging components but also makes the measurement process more flexible. The upper and lower laser ranging components are located at the ends of the upper and lower longitudinal screws, respectively. By emitting lasers and receiving the reflected signals, the thickness of the film can be accurately calculated. This non-contact measurement method avoids the errors and damage that may be caused by traditional mechanical measurements, further improving the accuracy and reliability of the measurement.

[0010] Preferably, the upper and lower laser ranging components have identical structures. The upper laser ranging component is equipped with a sliding block, and an angle adjustment disc is mounted on the front surface of the sliding block. A U-shaped bracket is mounted on the front surface of the angle adjustment disc, and the rangefinder body is engaged with the U-shaped bracket. A locking screw is mounted on the outer wall of the U-shaped bracket, with one end passing through the outer wall and contacting the rangefinder body. By rotating the locking screw, the rangefinder body can be fixed and released, facilitating adjustment of its angle and position. The angle adjustment disc allows the rangefinder body to be adjusted within a certain range to adapt to different angle measurement needs, improving measurement flexibility and adaptability. The sliding block is mounted on the bracket of the upper laser ranging component and can slide on the bracket to further adjust the position of the rangefinder body. Furthermore, since the upper and lower laser ranging components have identical structures, they can be used interchangeably, further improving the versatility and convenience of the device.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model centrally controls the operation of the entire device through a PLC controller, realizing full automation of the film from unwinding, thickness measurement to rewinding, significantly reducing manual intervention and improving measurement efficiency; at the same time, it combines a high-precision laser ranging component and a non-contact measurement method, effectively avoiding errors and film damage that may be caused by traditional measurement methods, and ensuring the accuracy and reliability of the measurement results.

[0012] 2. This utility model enables the thickness measuring component to move precisely laterally through a lateral adjustment component (including a lateral slide rail and a screw motor) to adapt to films of different widths; the height adjustment slide and leveling roller of the unwinding component can be adjusted to adapt to different thicknesses and tensions to ensure the film is flat; the angle and position of the rangefinder in the thickness measuring component can be flexibly adjusted. Through the combined use of various components, the device can flexibly adapt to the measurement needs of films of various specifications and has strong versatility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the thickness measuring component of this utility model; Figure 4 This is a schematic diagram of the lateral adjustment component of this utility model; Figure 5 This is a schematic diagram of the upper laser ranging component of this utility model; Figure 6 This is a schematic diagram of the unwinding assembly of this utility model; In the diagram: 1. Walking frame; 2. Electric support rod; 3. Chassis; 4. PLC controller; 5. Lateral adjustment assembly; 51. Lateral sliding plate; 52. First lateral slide rail; 53. Second lateral slide rail; 54. Lateral motor; 55. Lateral screw; 6. Unwinding assembly; 61. First support rod; 62. Second support rod; 63. Unwinding motor; 64. Unwinding roller; 65. Height adjustment slide rod; 66. Leveling roller; 67. Adjustable damping component 7. Thickness measuring component; 71. First transverse sliding rod; 72. Second transverse sliding rod; 73. Upper ranging motor; 74. Upper longitudinal screw; 75. Upper laser ranging component; 751. Sliding block; 752. Angle adjustment disc; 753. U-shaped bracket; 754. Locking screw; 755. Rangefinder body; 76. Lower ranging motor; 77. Lower laser ranging component; 78. Lower longitudinal screw; 8. Film body; 9. Winding component. Detailed Implementation

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Example 1: like Figure 1-6 As shown, one embodiment of this utility model proposes an automatic film thickness measuring device, including a walking frame 1, a housing 3, a lateral adjustment component 5, an unwinding component 6, and a thickness measuring component 7. Four electric support rods 2 are installed on the two side walls of the walking frame 1, providing support from multiple directions, significantly enhancing the overall structure's anti-interference capability and ensuring the stability of the device during measurement, laying the foundation for high-precision measurement. The housing 3 is installed on the upper surface of the walking frame 1, and a PLC controller 4 is installed on the front surface of the housing 3. The PLC controller 4 has powerful data processing and control functions, and through a preset program, it can accurately control the operation of the entire thickness measuring device. The operator can input commands through the PLC controller 4 to adjust the operating parameters of the thickness measuring device. The lateral adjustment component 5 is installed on the top of the housing 3, and the unwinding component 6 is installed on one side of the upper surface of the lateral adjustment component 5. The unwinding component 6 is used to place the film roll to be measured and can stably release the film, ensuring smooth operation of the film during the measurement process. The lateral adjustment component 5 has a precise adjustment function; by adjusting its position… It can achieve precise positioning of the unwinding component 6 and the subsequent thickness measuring component 7 to adapt to the film measurement needs of different widths or positions. The other side of the upper surface of the lateral adjustment component 5 is equipped with a winding component 9. The winding component 9 is used to take up the film after thickness measurement. It can not only stably roll up the film to prevent wrinkles or loosening of the film during the winding process, but also coordinate with the working rhythm of the unwinding component 6 and the thickness measuring component 7 to ensure the continuity and efficiency of the entire measurement process. The film body 8 is installed between the unwinding component 6 and the winding component 9. The film body 8 moves smoothly between the unwinding component 6, the thickness measuring component 7 and the winding component 9 to receive accurate thickness measurement, thereby realizing automated and high-precision detection of film thickness. This not only improves measurement efficiency, but also reduces the difficulty and error of manual operation, and provides strong support for quality control and cost saving in film production. The thickness measuring component 7 is installed on the upper surface of the lateral adjustment component 5. As the core component of the device, the thickness measuring component 7 has high-precision measurement capabilities and can obtain the thickness data of the film body 8 in real time and accurately during the movement process.

[0016] Example 2: like Figure 3 and Figure 4As shown, the automatic film thickness measuring device proposed in this utility model, compared with Embodiment 1, further includes: a horizontal sliding plate 51 is provided on the horizontal adjustment component 5, a first horizontal slide rail 52 is installed on one side of the upper surface of the horizontal sliding plate 51, and a second horizontal slide rail 53 is installed on the other side of the upper surface of the horizontal sliding plate 51. The first horizontal slide rail 52 and the second horizontal slide rail 53 are arranged in parallel, providing a stable guide for the horizontal movement of the thickness measuring component 7, ensuring that the thickness measuring component 7 can move smoothly along the predetermined trajectory during the measurement process, which not only improves the accuracy of the measurement, but also effectively avoids measurement errors caused by shaking or offset; at the same time, through the cooperative use of the horizontal sliding plate 51 with the first horizontal slide rail 52 and the second horizontal slide rail 53, the accurate positioning and rapid movement of the thickness measuring component 7 in the horizontal direction are achieved. The movement further improves the measurement efficiency and accuracy of the automatic film thickness measuring device. A transverse screw 55 is installed between the two end support plates of the second transverse slide rail 53. The output end of the transverse motor 54 is mounted on the transverse screw 55, and a second transverse sliding rod 72 is installed on the transverse screw 55. The second transverse sliding rod 72 is threadedly connected to the transverse screw 55. When the transverse motor 54 starts, it drives the transverse screw 55 to rotate, thereby driving the second transverse sliding rod 72 to move along the screw axis, thus driving the thickness measuring component 7 to make precise displacement adjustments in the transverse direction. In addition, the cooperation between the second transverse sliding rod 72 and the transverse screw 55 makes the thickness measuring component 7 more stable during movement, effectively avoiding measurement errors caused by shaking or offset, and providing stronger support for quality control and cost saving in film production.

[0017] In this embodiment, as Figure 6As shown, the unwinding assembly 6 is provided with a first support rod 61 and a second support rod 62. An unwinding roller 64 is installed between the upper inner ends of the first support rod 61 and the second support rod 62. The unwinding roller 64 is used to hold the film roll to be measured. The arrangement of the first support rod 61 and the second support rod 62 not only provides stable support for the unwinding roller 64, but also facilitates the adjustment of the position of the unwinding roller 64 to accommodate film rolls of different widths and thicknesses. The unwinding roller 64 is installed on the output end of the unwinding motor 63. The drive of the unwinding motor 63 enables the unwinding roller 64 to rotate smoothly and at a uniform speed, thereby ensuring continuous and uniform unwinding of the film. The unwinding motor 63 is installed on the outer wall of the first support rod 61. A height adjustment slide bar 65 is installed between the lower inner ends of the first support rod 61 and the second support rod 62 for height adjustment. Two adjustable damping elements 67 are installed at the bottom of the height adjusting slide bar 65, and a leveling roller 66 is installed at the top of the height adjusting slide bar 65. The installation of the height adjusting slide bar 65 allows the height of the leveling roller 66 to be flexibly adjusted according to the thickness and tension of the film. By operating the adjustable damping elements 67, the contact pressure between the leveling roller 66 and the film can be precisely controlled, ensuring that the film remains flat during unwinding and avoiding the impact of wrinkles or unevenness on the subsequent thickness measurement accuracy. The use of the leveling roller 66 further improves the flatness of the film, laying a solid foundation for subsequent accurate measurement. In addition, the combined use of the height adjusting slide bar 65 and the adjustable damping elements 67 makes the entire unwinding assembly 6 more flexible and convenient in adapting to different film specifications, effectively improving the versatility and practicality of the equipment.

[0018] In this embodiment, as Figure 3 and Figure 4 As shown, the thickness measuring component 7 is equipped with a first transverse sliding rod 71 and a second transverse sliding rod 72. The first transverse sliding rod 71 and the second transverse sliding rod 72 are respectively mounted on the first transverse slide rail 52 and the second transverse slide rail 53. The arrangement of the first transverse sliding rod 71 and the second transverse sliding rod 72 allows the thickness measuring component 7 to move horizontally along the first transverse slide rail 52 and the second transverse slide rail 53, thereby covering the entire width range of the film and ensuring the comprehensiveness and accuracy of the measurement. An upper measuring motor 73 and a lower measuring motor 76 are installed on the outer wall of the second transverse sliding rod 72. The upper measuring motor 73 and the lower measuring motor 76 drive the thickness measuring component 7 to move up and down in the vertical direction to realize the film thickness measurement at different positions. Through the multi-dimensional sliding setting, the efficiency and accuracy of film thickness measurement are greatly improved, enabling this automatic film thickness measuring device to be widely used in various film production and processing fields, meeting the needs of different industries for precise control of film thickness.

[0019] In this embodiment, as Figure 3As shown, an upper longitudinal screw 74 and a lower longitudinal screw 78 are respectively installed on the output ends of the upper ranging motor 73 and the lower ranging motor 76. The upper longitudinal screw 74 and the lower longitudinal screw 78 are installed between the first transverse sliding rod 71 and the second transverse sliding rod 72. An upper laser ranging component 75 and a lower laser ranging component 77 are respectively installed on the first transverse sliding rod 71 and the second transverse sliding rod 72. The upper longitudinal screw 74 and the lower longitudinal screw 78, in cooperation with the upper ranging motor 73 and the lower ranging motor 76, can drive the upper laser ranging component 75. The upper laser ranging component 75 and the lower laser ranging component 77 move precisely in the vertical direction, which not only ensures the stability and accuracy of the ranging components, but also makes the measurement process more flexible. The upper laser ranging component 75 and the lower laser ranging component 77 are located at the ends of the upper longitudinal screw 74 and the lower longitudinal screw 78, respectively. By emitting lasers and receiving the reflected signals, the thickness of the film can be accurately calculated. This non-contact measurement method avoids the errors and damage that may be caused by traditional mechanical measurement, and further improves the accuracy and reliability of the measurement.

[0020] In this embodiment, as Figure 5 As shown, the upper laser ranging component 75 and the lower laser ranging component 77 have the same structure. The upper laser ranging component 75 is provided with a sliding block 751. An angle adjustment disk 752 is mounted on the front surface of the sliding block 751. A U-shaped bracket 753 is mounted on the front surface of the angle adjustment disk 752. The rangefinder body 755 is engaged with the U-shaped bracket 753. A locking screw 754 is mounted on the outer wall of the U-shaped bracket 753. One end of the locking screw 754 passes through the outer wall of the U-shaped bracket 753 and contacts the rangefinder body 755. By rotating the locking screw 754, the rangefinder body can be engaged. The fixing and loosening of 755 facilitates the adjustment of the angle and position of the rangefinder body 755; the installation of the angle adjustment disc 752 allows the rangefinder body 755 to be angled within a certain range to adapt to different angle measurement needs, improving the flexibility and adaptability of measurement; the sliding block 751 is installed on the bracket of the upper laser ranging component 75 and can slide on the bracket to further adjust the position of the rangefinder body 755; at the same time, since the upper laser ranging component 75 and the lower laser ranging component 77 have the same structure, they can be used interchangeably, further improving the versatility and convenience of the device.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic film thickness measuring device, comprising a walking frame (1), a housing (3), a lateral adjustment assembly (5), an unwinding assembly (6), and a thickness measuring assembly (7); characterized in that: Four electric support rods (2) are installed on the two side walls of the walking frame (1). A housing (3) is installed on the upper surface of the walking frame (1). A PLC controller (4) is installed on the front surface of the housing (3). A lateral adjustment component (5) is installed on the top of the housing (3). An unwinding component (6) is installed on one side of the upper surface of the lateral adjustment component (5). A winding component (9) is installed on the other side of the upper surface of the lateral adjustment component (5). A film body (8) is installed between the unwinding component (6) and the winding component (9). A thickness measuring component (7) is installed on the upper surface of the lateral adjustment component (5).

2. The automatic film thickness measuring device according to claim 1, characterized in that: The lateral adjustment assembly (5) is provided with a lateral sliding plate (51). A first lateral slide rail (52) is installed on one side of the upper surface of the lateral sliding plate (51), and a second lateral slide rail (53) is installed on the other side of the upper surface of the lateral sliding plate (51). A lateral screw (55) is installed between the two end support plates of the second lateral slide rail (53). The lateral screw (55) is installed on the output end of the lateral motor (54), and a second lateral sliding rod (72) is installed on the lateral screw (55).

3. The automatic film thickness measuring device according to claim 1, characterized in that: The unwinding assembly (6) is provided with a first support rod (61) and a second support rod (62). An unwinding roller (64) is installed between the upper inner ends of the first support rod (61) and the second support rod (62). The unwinding roller (64) is installed on the output end of the unwinding motor (63). The unwinding motor (63) is installed on the outer side wall of the first support rod (61). A height adjusting slide rod (65) is installed between the lower inner ends of the first support rod (61) and the second support rod (62). Two adjusting damping elements (67) are installed at the bottom of the height adjusting slide rod (65). A leveling roller (66) is installed at the top of the height adjusting slide rod (65).

4. The automatic film thickness measuring device according to claim 1, characterized in that: The thickness measuring component (7) is provided with a first transverse sliding rod (71) and a second transverse sliding rod (72). The first transverse sliding rod (71) and the second transverse sliding rod (72) are respectively installed on the first transverse slide rail (52) and the second transverse slide rail (53). The outer wall of the second transverse sliding rod (72) is equipped with an upper distance measuring motor (73) and a lower distance measuring motor (76).

5. The automatic film thickness measuring device according to claim 4, characterized in that: The upper longitudinal screw (74) and the lower longitudinal screw (78) are respectively installed on the output ends of the upper ranging motor (73) and the lower ranging motor (76). The upper longitudinal screw (74) and the lower longitudinal screw (78) are installed between the first transverse sliding rod (71) and the second transverse sliding rod (72). The upper laser ranging component (75) and the lower laser ranging component (77) are respectively installed on the first transverse sliding rod (71) and the second transverse sliding rod (72).

6. The automatic film thickness measuring device according to claim 5, characterized in that: The upper laser ranging component (75) and the lower laser ranging component (77) have the same structure. The upper laser ranging component (75) is provided with a sliding block (751). An angle adjustment disk (752) is installed on the front surface of the sliding block (751). A U-shaped bracket (753) is installed on the front surface of the angle adjustment disk (752). The rangefinder body (755) is clamped on the U-shaped bracket (753). A locking screw (754) is installed on the outer wall of the U-shaped bracket (753).

Images