Residual thickness measuring instrument

Abstract

The utility model discloses a residual thickness measuring instrument, and relates to the technical field of measuring instruments. A top plate is fixedly connected to the top of the measuring box, a control mechanism is arranged in the measuring box, a supporting rod is fixedly connected to the rear side of the measuring box, a lifting mechanism is fixedly connected to the top end of the supporting rod, a digital display dial indicator is arranged at the output end of the lifting mechanism, and a guide rail is arranged at the bottom of the digital display dial indicator. The digital display dial indicator senses displacement through a photodiode circuit composed of a photodiode and a photoresistor inside, when the measuring plate is about to displace, light enters the photodiode circuit through a light hole of the measuring plate, so that the photodiode circuit generates an electric signal, and the measuring plate is driven to move. According to the propagation speeds of the electric signals in different measuring plates and the time from transmitting to receiving, the electric signals are transmitted to the digital display chip, the digital display chip can amplify, filter and digitally process the electric signals and convert the electric signals into corresponding digital signals, and the digital signals can be displayed on the digital display dial indicator.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a residual thickness measuring instrument. Background Art

[0002] Thickness gauges can be used to measure the thickness of rolled strips online and output them in the form of electrical signals. The electrical signals are sent to the display and automatic thickness control system to achieve automatic thickness control (AGC) of the strip thickness. Currently, there are four common thickness gauges: gamma ray, beta ray, x-ray and isotope ray, which are all placed at the exit or entrance of the strip mill. When designing and installing the thickness gauge, it should be as close to the working roll as possible under possible conditions, in order to reduce the lag adjustment time of the plate thickness.

[0003] At present, the thickness of PCB is usually measured by moving the upper and lower ejector pins to fit the board to be tested, and finally measuring the thickness data. However, PCB boards may not be completely flat, and some boards may have irregular shapes with depressions at the bottom. Due to the existence of irregular depressions, the size of the test head will affect the measured thickness during testing.

[0004] Therefore, a residual thickness measuring instrument is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the unevenness of the board affects the measured thickness, and at the same time solve the problem that the handheld spiral micrometer cannot cover the middle area of ​​the board in measuring depth, and the spiral micrometer can only measure the thickness of the edge of the board. The utility model provides a residual thickness measuring instrument.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] The residual thickness measuring instrument comprises: a top plate fixedly connected to the top of a measuring box, supporting legs fixedly connected to the four corners of the bottom of the measuring box, a cabinet door movably connected to the front side of the measuring box, a control mechanism arranged inside the measuring box, a supporting rod fixedly connected to the rear side of the measuring box, a lifting mechanism fixedly connected to the top of the supporting rod, a digital micrometer fixedly connected to the output end of the lifting mechanism, a guide rail arranged at the bottom of the digital micrometer, a measuring plate arranged at the bottom of the guide rail, a fixed seat arranged at the bottom of the measuring plate, a scale system fixedly connected to the front side of the fixed seat, a driving mechanism arranged at the rear side of the fixed seat, a lower measuring probe arranged at the bottom of the fixed seat, and a partition fixedly connected to the right side of the inside of the measuring box.

[0008] Furthermore, the scale system and the driving mechanism are symmetrically arranged, and are respectively located at the front and rear ends of the fixing seat.

[0009] Furthermore, the fixing seat is located at the bottom of the measuring plate and is fixedly connected to the bottom of the measuring plate.

[0010] Furthermore, the support rod is arranged in an L shape, and the output end of the support rod is located at the top center of the measuring box.

[0011] Furthermore, ventilation holes are provided on the left and right sides of the measuring box.

[0012] Furthermore, two exhaust fans are fixedly connected to the left side of the measuring box.

[0013] The beneficial effects of the utility model are as follows:

[0014] Due to the different thickness of the plates, the utility model drives the lifting mechanism to start through the control mechanism, and the lifting mechanism starts, and the lifting mechanism drives the digital display micrometer and the guide rail to move downward, and the linear motion accuracy of the measuring instrument is ensured by the guide rail, and the coordinate value is measured and recorded by the ruler system, and the driving mechanism drives the lower measuring probe to move upward accordingly, and the digital display micrometer and the lower measuring probe contact the upper and lower ends of the measuring plate respectively, and the digital display micrometer senses the displacement through the photodiode circuit composed of the internal photodiode and the photoresistor. When the measuring plate is to be displaced, the light passes through the light-transmitting hole of the measuring plate and enters the photodiode circuit, so that it generates an electrical signal, and according to the propagation speed of the electrical signal in different measuring plates and the time from emission to reception, the electrical signal is transmitted to the digital display chip, and the digital display chip amplifies, filters and digitizes the electrical signal, and converts it into a corresponding digital signal, and the digital signal is displayed on the digital display micrometer, so that the thickness of the measuring plates of different sizes can be measured, and the exhaust fan and the air vent are used to dissipate the heat inside the measuring box to prevent the internal temperature of the measuring box from being too high, causing damage to the control mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the measuring box of the utility model;

[0017] Figure 3 It is a schematic diagram of the measuring block of the utility model;

[0018] Figure 4 It is a schematic diagram of the measuring probe of the utility model;

[0019] Figure 5 It is a schematic diagram of the bottom of the three-dimensional structure of the utility model;

[0020] Figure numerals: 1. Measuring box; 101. Top plate; 2. Support legs; 3. Air vents; 4. Exhaust fan; 5. Cabinet door; 6. Control mechanism; 7. Support rod; 8. Digital micrometer; 9. Guide rail; 10. Fixed seat; 11. Scale system; 12. Lower measuring probe; 13. Driving mechanism; 14. Lifting mechanism; 15. Measuring plate; 16. Partition. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 4As shown, the residual thickness measuring instrument comprises a measuring box 1, which is a rectangular box with a hollow interior. A top plate 101 is fixedly connected to the top of the measuring box 1, and downward supporting legs 2 are fixedly connected to the four corners of the bottom of the measuring box 1. Air vents 3 are opened on the left and right sides of the measuring box 1. Two exhaust fans 4 are fixedly connected to the left side of the measuring box 1, and a cabinet door 5 is movably connected to the front side of the measuring box 1. A control mechanism 6 is arranged inside the measuring box 1, a support rod 7 is fixedly connected to the rear side of the measuring box 1, a lifting mechanism 14 is fixedly connected to the top of the support rod 7, a digital micrometer 8 is fixedly connected to the output end of the lifting mechanism 14, a guide rail 9 is arranged at the bottom of the digital micrometer 8, a measuring plate 15 is arranged at the bottom of the guide rail 9, a fixed seat 10 is arranged at the bottom of the measuring plate 15, a scale system 11 is fixedly connected to the front side of the fixed seat 10, a driving mechanism 13 is arranged on the rear side of the fixed seat 10, a lower measuring probe 12 is arranged at the bottom of the fixed seat 10, and a partition 16 is fixedly connected to the right side of the interior of the measuring box 1.

[0026] It should be noted that, due to the different thickness of the plates, the lifting mechanism 14 is driven by the control mechanism 6 to start, and the lifting mechanism 14 is started, and the lifting mechanism 14 drives the digital micrometer 8 and the guide rail 9 to move downward, and the linear motion accuracy of the measuring instrument is ensured by the guide rail 9, and the coordinate value is measured and recorded by the ruler system. The driving mechanism 13 drives the lower measuring probe 12 to move upward, and the digital micrometer 8 and the lower measuring probe 12 contact the upper and lower ends of the measuring plate 15 respectively. The digital micrometer 8 senses the displacement through the photodiode circuit composed of the internal photodiode and the photoresistor. When the measuring plate 15 is to be During displacement, light passes through the light-transmitting holes of the measuring plate 15 and enters the photodiode circuit, causing it to generate an electrical signal. The electrical signal is then transmitted to the digital display chip according to the propagation speed of the electrical signal in different measuring plates 15 and the time elapsed from emission to reception. The digital display chip amplifies, filters and digitizes the electrical signal and converts it into a corresponding digital signal. The digital signal is displayed on the digital micrometer 8. For this purpose, the thickness of measuring plates 15 of different sizes can be measured. The exhaust fan 4 and the air vents 3 are used to dissipate heat inside the measuring box 1 to prevent the internal temperature of the measuring box 1 from being too high and causing damage to the control mechanism 6.

[0027] In summary: due to the different thickness of the board, the lifting mechanism 14 is driven by the control mechanism 6 to start, the lifting mechanism 14 is started, the lifting mechanism 14 drives the digital micrometer 8 and the guide rail 9 to move downward, the linear motion accuracy of the measuring instrument is ensured by the guide rail 9, and the coordinate value is measured and recorded by the ruler system. The driving mechanism 13 drives the lower measuring probe 12 to move upward, and the digital micrometer 8 and the lower measuring probe 12 contact the upper and lower ends of the measuring plate 15 respectively. The digital micrometer 8 senses the displacement through the photodiode circuit composed of the internal photodiode and the photoresistor. When the measuring plate 15 is to be displaced When the light passes through the light-transmitting hole of the measuring board 15, it enters the photodiode circuit, causing it to generate an electrical signal. According to the propagation speed of the electrical signal in different measuring boards 15 and the time from emission to reception, the electrical signal is transmitted to the digital display chip. The digital display chip amplifies, filters and digitizes the electrical signal and converts it into a corresponding digital signal. The digital signal is displayed on the digital micrometer 8. For this reason, the thickness of measuring boards 15 of different sizes can be measured. The exhaust fan 4 and the air vents 3 are used to dissipate heat inside the measuring box 1 to prevent the internal temperature of the measuring box 1 from being too high and causing damage to the control mechanism 6.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. Residual thickness measuring instrument, characterized in that: The measuring box (1) comprises a measuring box (1), wherein the top of the measuring box (1) is fixedly connected to a top plate (101), the four corners of the bottom of the measuring box (1) are fixedly connected to support legs (2), the front side of the measuring box (1) is movably connected to a cabinet door (5), a control mechanism (6) is arranged inside the measuring box (1), the rear side of the measuring box (1) is fixedly connected to a support rod (7), the top end of the support rod (7) is fixedly connected to a lifting mechanism (14), and the output end of the lifting mechanism (14) is fixedly connected to a digital display A micrometer (8) is provided at the bottom of the digital display micrometer (8), a guide rail (9) is provided at the bottom of the guide rail (9), a measuring plate (15) is provided at the bottom of the measuring plate (15), a fixing seat (10) is provided at the bottom of the measuring plate (15), a scale system (11) is fixedly connected to the front side of the fixing seat (10), a driving mechanism (13) is provided at the rear side of the fixing seat (10), a lower measuring probe (12) is provided at the bottom of the fixing seat (10), and a partition plate (16) is fixedly connected to the right side of the inside of the measuring box (1).

2. The residual thickness measuring instrument according to claim 1, characterized in that: The scale system (11) and the driving mechanism (13) are symmetrically arranged and are respectively located at the front and rear ends of the fixing seat (10).

3. The residual thickness measuring instrument according to claim 1, characterized in that: The fixing seat (10) is located at the bottom of the measuring plate (15) and is fixedly connected to the bottom of the measuring plate (15).

4. The residual thickness measuring instrument according to claim 1, characterized in that: The support rod (7) is arranged in an L shape, and the output end of the support rod (7) is located at the top center of the measuring box (1).

5. The residual thickness measuring instrument according to claim 1, characterized in that: The left and right sides of the measuring box (1) are both provided with air holes (3).

6. The residual thickness measuring instrument according to claim 1, characterized in that: Two exhaust fans (4) are fixedly connected to the left side of the interior of the measuring box (1).

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