A PVB film thickness gauge

Abstract

The present invention belongs to the technical field of measuring instruments and provides a PVB film thickness gauge, comprising a frame, a liftable measuring device disposed on the frame, a workbench disposed below the measuring device, the workbench connected to the frame, a conveying device disposed on the frame, the conveying device being configured to contact a PVB film so as to horizontally convey the PVB film on the workbench to below the measuring device. The area where the measuring device contacts the PVB film is defined as a measuring area, and the area where the conveying device contacts the PVB film is defined as a conveying contact area. By arranging the measuring area outside the conveying contact area, the present invention can avoid measuring the conveying contact area where the PVB film is squeezed during measurement when measuring the uniformity of the PVB film, thereby improving measurement accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring instruments, and in particular relates to a PVB film thickness gauge. Background Art

[0002] PVB film is a plastic film made of polyvinyl butyrate resin with excellent performance. It is widely used in the construction and automotive industries. PVB film has excellent impact resistance and adhesion. In the production process of laminated glass, PVB film is used to bond two pieces of glass together to improve the impact resistance and safety of the glass. It can also effectively absorb ultraviolet rays in sunlight, which not only plays a fire retardant role, but also helps reduce the spread of fire. In the automotive industry, PVB film is also used in the manufacture of car windshields, which also plays a role in enhancing the strength and safety of glass.

[0003] CN201110104294.9 discloses an automatic thickness gauge and an automatic thickness measurement system, which can continuously and automatically measure the thickness of test samples such as coated products according to the needs of production process inspection. Its outstanding features are small size, compact structure, adjustable step distance of the measured object, high precision, high efficiency and easy operation. It adopts an automatic forward drive system for the measuring sample, with a sample forward speed of 10mm / s, which greatly improves the test efficiency and can fully meet the requirements of continuous and efficient testing. The unique design prevents the measuring sample from being contaminated by dust during the forward process, better ensuring the accuracy and reliability of the measurement results; the operation is very simple and convenient, and the entire measurement process is automatically completed by just pressing a button, avoiding interference from human factors, reducing labor intensity and improving work efficiency.

[0004] In the above technical solution, the thickness of the laminated product is measured by the cooperation of the paper feed pressure wheel and the paper feed roller. However, during the continuous measurement process, the paper feed pressure wheel will press the laminated film onto the paper feed roller. Since the laminated film is squeezed and deformed, the measuring rod will become inaccurate when detecting the uniformity of the laminated film. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned problem and provide a PVB film thickness gauge. By setting the measuring area outside the conveying contact area, the thickness gauge can avoid measuring the conveying contact area where the PVB film is squeezed during the measurement process when measuring the uniformity of the PVB film, thereby improving the measurement accuracy.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A PVB film thickness gauge comprises a frame, a lifting measuring device is provided on the frame, a workbench is provided below the measuring device, the workbench is connected to the frame, a conveying device is provided on the frame, the conveying device is used to contact with the PVB film so that the PVB film is horizontally conveyed on the workbench to below the measuring device, the area where the measuring device contacts the PVB film is the measuring area, and the area where the conveying device contacts the PVB film is the conveying contact area;

[0008] When the measuring rod descends and contacts the PVB film, the measuring area is located outside the conveying contact area.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In the present invention, the conveying of the PVB film is completed by utilizing the contact between the conveying device and the PVB film. When the measuring device descends and contacts the PVB film to measure the thickness of the film, the measuring area where the measuring device contacts the PVB film is set outside the conveying contact area where the conveying device contacts the PVB film. In this way, when measuring the uniformity of the PVB film, it is possible to avoid measuring the conveying contact area where the PVB film is squeezed during the measurement process, thereby improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional diagram of a PVB film thickness gauge according to Example 1;

[0012] Figure 2 is a three-dimensional diagram of a lifting mechanism of a PVB film thickness gauge according to Example 1;

[0013] Figure 3 is a three-dimensional diagram of a rotating mechanism of a PVB film thickness gauge according to Example 1;

[0014] Figure 4 is another perspective view of a PVB film thickness gauge according to Example 1;

[0015] Among them, the reference numerals of each figure are:

[0016] 1. Frame; 11. Measuring device; 111. Second pneumatic telescopic rod; 112. Probe; 113. Sensor; 2. Workbench; 3. Conveying device; 31. Lifting mechanism; 311. First pneumatic telescopic rod; 312. Mounting seat; 313. First roller; 32. Rotating mechanism; 321. Rotating motor; 322. Transmission module; 323. Second roller; 4. Limiting structure; 41. Cross bar; 42. Longitudinal bar; 5. Ion fan; 6. Machine platform; 7. Fixed frame; 71. Conveying roller. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1

[0019] refer to Figures 1 to 4 A PVB film thickness gauge includes a frame 1, a liftable measuring device 11 is provided on the frame 1, a workbench 2 is provided below the measuring device 11, and a conveying device 3 is provided on the frame 1. The conveying device 3 is used to contact the PVB film so that the PVB film is horizontally conveyed on the workbench to the bottom of the measuring device 11. The area where the measuring device 11 contacts the PVB film is the measuring area, and the area where the conveying device 3 contacts the PVB film is the conveying contact area.

[0020] When the measuring rod descends and contacts the PVB film, the measuring area is located outside the conveying contact area.

[0021] Under this design, the PVB film is first placed on the workbench 2, and then the conveying device 3 is started. The conveying device 3 contacts the PVB film to form a conveying contact area and conveys the PVB film to the bottom of the measuring device 11. After the PVB film is conveyed to the bottom of the measuring device 11, it stops. Then, the measuring device 11 descends and contacts the PVB film to form a measuring area to complete a thickness measurement. The measuring area is set outside the conveying contact area. After that, the measuring device 11 is reset. After repeating the above working steps multiple times, the uniform detection of the PVB film is completed. In this way, it is possible to avoid measuring the conveying contact area where the PVB film is squeezed during the measurement process, thereby improving the measurement accuracy.

[0022] Preferably, the workbench 2 is provided with a feeding end and a discharging end, and the conveying device 3 is located between the measuring device 11 and the discharging end.

[0023] Specifically, the conveying device 3 is set between the discharge end and the measuring device 11. When the conveying device 3 contacts the PVB film for conveying, the conveying can be completed by pulling the PVB film, so that the problem of wrinkles will not occur during the conveying of the PVB film.

[0024] More preferably, the conveying device 3 includes a lifting mechanism 31 arranged on the frame 1 and a rotating mechanism 32 arranged in the workbench 2, the lifting mechanism 31 is located above the rotating mechanism 32, the lifting mechanism 31 is used to press the PVB film down on the rotating mechanism 32, and the rotating mechanism 32 conveys the PVB film horizontally to the bottom of the measuring device 11 by rotation.

[0025] Furthermore, when conveying the PVB film, the lifting mechanism 31 first presses the PVB film down on the rotating mechanism 32, and then the rotating mechanism 32 rotates and conveys the PVB film. After the conveying is completed, the lifting mechanism 31 is reset, and the measuring device 11 descends and contacts the PVB film and then resets.

[0026] More preferably, the lifting mechanism 31 includes a first pneumatic telescopic rod 311 arranged in the frame 1, a mounting base 312 arranged on the output end of the first pneumatic telescopic rod 311, and a first roller 313, the first roller 313 is rotatably connected to the mounting base 312, and the first pneumatic telescopic rod 311 is used to drive the first roller 313 to descend and press the PVB film onto the rotating mechanism 32.

[0027] Specifically, the first pneumatic telescopic rod 311 drives the mounting base 312 to descend, thereby driving the first roller 313 to descend, so that the first roller 313 will press the PVB film onto the rotating mechanism 32. When the rotating motor 321 is activated, it will drive the first roller 313 to rotate synchronously, thereby making the PVB film more stable during the transportation process and preventing wrinkles.

[0028] More preferably, the rotating mechanism 32 includes a rotating motor 321 and a second roller 323 arranged in the workbench 2, a transmission module 322 is provided on the output end of the rotating motor 321, and the transmission module 322 is connected to the second roller 323. A gap is provided between the first roller 313 and the second roller 323 for the PVB film to pass through. The second roller 323 and the first roller 313 are parallel to each other, and the top of the second roller 323 is flush with the table surface of the workbench 2.

[0029] In this embodiment, the transmission module 322 adopts synchronous wheel transmission, and the specific structure of the synchronous wheel transmission has been disclosed in Chinese patent CN109236960A, so the structure of the transmission module 322 is not described in detail in this embodiment.

[0030] Specifically, the first pneumatic telescopic rod 311 drives the first roller 313 to descend and press the PVB film onto the second roller 323. Then, the rotary motor 321 drives the transmission module 322 to rotate the second roller 323. The rotating second roller 323 drives the horizontal movement of the PVB film, thereby completing the transportation of the PVB film.

[0031] In this embodiment, the lifting mechanism 31 is symmetrically arranged on both sides of the measuring device 11; the second rollers 323 are symmetrically arranged on both sides of the measuring device 11, and the transmission module 322 is connected to the symmetrically arranged second rollers 323, and the rotating motor 321 can simultaneously drive the symmetrically arranged second rollers 323 to rotate.

[0032] Furthermore, the rotating motor 321 drives the transmission module 322, which in turn drives the two second rollers 323 to rotate. In this way, when the first pneumatic telescopic rod 311 drives the first roller 313 to descend, the transportation of the PVB film can be completed, and the transportation of the PVB film can be made more stable, without causing the problem of wrinkles in the PVB film during transportation.

[0033] In this embodiment, a limiting structure 4 is provided on the side of the workbench 2 close to the feeding end;

[0034] The limiting structure 4 includes a horizontal bar 41 arranged on the side of the workbench 2 and two vertical bars 42 slidably connected to the horizontal bar 41. Therefore, a gap is provided between the two vertical bars 42 for the PVB film to pass through. The gap can be adjusted by sliding the two vertical bars 42 to match PVB films of different widths.

[0035] Furthermore, in order to prevent the PVB film from deviating during transportation, two longitudinal bars 42 are provided on the transverse bar 41 to limit the PVB film. Moreover, the longitudinal bars 42 can slide on the transverse bar 41, so as to adapt to PVB films of different widths.

[0036] In this embodiment, the machine also includes a platform 6 disposed below the workbench 2 and a fixed frame 7 disposed on the platform 6. The fixed frame 7 is connected to the feed end and is provided with a plurality of conveying rollers 71 disposed in the fixed frame 7. The plurality of conveying rollers 71 are arranged side by side along the direction of conveying the PVB film. The plurality of conveying rollers 71 disposed in the fixed frame 12 can improve the smoothness of the PVB film during conveying.

[0037] Preferably, the machine further includes an ion fan 5 provided on the machine platform 6 , and the ion fan 5 is located on one side of the fixing frame 7 .

[0038] Specifically, the PVB film will have static electricity, and static electricity will absorb dust. Due to the influence of dust, when the measuring device 11 is lowered for measurement, it will affect the measurement result. Therefore, the PVB film is demagnetized by the ion fan 5.

[0039] Preferably, the measuring device 11 includes a second pneumatic telescopic rod 111 mounted on the frame 1, a probe 112 connected to the second pneumatic telescopic rod 111, and a sensor 113 mounted on the workbench 2. The second pneumatic telescopic rod 111 is used to drive the probe 112 up and down. The second pneumatic telescopic rod 111 drives the probe 112 up and down, and the sensor 113 cooperates with the probe 112 to measure the thickness of the PVB film.

[0040] Comparative Example 1

[0041] The method is basically the same as Example 1, except that the measurement area is set within the conveying contact area. The measurement results are shown in Table 1:

[0042] Table 1 Measurement results of PVB film

[0043]

[0044] The measurement method is as follows: take 6 measurement points on the PVB film, then select one of the points as the first measurement point, measure the first measurement point multiple times and obtain the average value as the result of the first measurement data. After that, the measurement of the other 5 points is carried out in the same way.

[0045] Result analysis:

[0046] 1. By comparing and analyzing the test data of Example 1 and Comparative Example 1, we found that the data in Comparative Example 1 were all lower than those in Example 1. In fact, in the second measurement data, the average value of the overall measurement was significantly lowered, and these data were all obtained by taking the average value. This difference indicates that if the measurement area is set within the conveying contact area and the PVB film is conveyed under pressure, the measurement results may be affected.

[0047] In summary, when measuring the uniformity of the PVB film, setting the measurement area outside the conveying contact area can improve the measurement accuracy.

[0048] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or modifications can be made without departing from the principles of the present invention. These improvements or modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A PVB film thickness gauge, comprising a frame, a liftable measuring device provided on the frame, a workbench provided below the measuring device, the workbench connected to the frame, a conveying device provided on the frame, the conveying device being used to contact the PVB film so as to horizontally convey the PVB film on the workbench to below the measuring device, characterized in that: The area where the measuring device contacts the PVB film is the measuring area, and the area where the conveying device contacts the PVB film is the conveying contact area; When the measuring device descends and contacts the PVB film, the measuring area is located outside the conveying contact area; The workbench is provided with a feeding end and a discharging end, and the conveying device is located between the measuring device and the discharging end; A limiting structure is provided on the side of the workbench close to the feeding end; The limiting structure includes a horizontal bar arranged on the side of the workbench and two vertical bars slidably connected to the horizontal bar. A gap is provided between the two vertical bars for the PVB film to pass through. The gap can be adjusted by sliding the two vertical bars to match PVB films of different widths. The conveying device includes a lifting mechanism provided on a frame and a rotating mechanism provided in a workbench. The lifting mechanism is located above the rotating mechanism and is used to press the PVB film down on the rotating mechanism. The rotating mechanism transports the PVB film horizontally to the bottom of the measuring device by rotating. The lifting mechanism includes a first pneumatic telescopic rod arranged in the frame, a mounting seat arranged on the output end of the first pneumatic telescopic rod, and a first roller. The first roller is rotatably connected to the mounting seat. The first pneumatic telescopic rod is used to drive the first roller to descend and press the PVB film onto the rotating mechanism. The rotating mechanism includes a rotating motor and a second roller arranged in the workbench. A transmission module is provided on the output end of the rotating motor, and the transmission module is connected to the second roller. A gap is provided between the first roller and the second roller for the PVB film to pass through. The second roller and the first roller are parallel to each other, and the top of the second roller is flush with the workbench surface. The lifting mechanism is symmetrically arranged on both sides of the measuring device; the second rollers are symmetrically arranged on both sides of the measuring device, and the transmission module is connected to the symmetrically arranged second rollers, and the rotating motor can simultaneously drive the symmetrically arranged second rollers to rotate.

2. A PVB film thickness gauge according to claim 1, characterized in that: It also includes a machine platform arranged below the workbench and a fixed frame arranged on the machine platform, wherein the fixed frame is docked with the feed end, and a plurality of conveying rollers are arranged in the fixed frame, and the plurality of conveying rollers are arranged side by side along the direction of conveying the PVB film.

3. A PVB film thickness gauge according to claim 1, characterized in that: The machine also includes an ion fan arranged on the machine platform, and the ion fan is located on one side of the fixing frame.

4. A PVB film thickness gauge according to claim 1, characterized in that: The measuring device includes a second pneumatic telescopic rod arranged on a frame, a measuring head connected to the second pneumatic telescopic rod, and a sensor arranged on a workbench. The second pneumatic telescopic rod is used to drive the measuring head to rise and fall.

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