Pipe film thickness measuring device

Abstract

The utility model relates to the technical field of thickness measurement, and discloses a pipe film thickness measuring device which comprises a thickness measuring support and a spectrum confocal displacement sensor, two horizontal rollers are arranged on the thickness measuring support at intervals in the conveying direction of a film, the two horizontal rollers are arranged at the same height, tensioning mechanisms are arranged at the two ends of the thickness measuring support, and the spectrum confocal displacement sensor is arranged on the spectrum confocal displacement sensor. The two horizontal rollers are both located between the two tensioning mechanisms, each tensioning mechanism comprises a tensioning roller, the tensioning rollers are located below the horizontal rollers, the tensioning rollers have the freedom degree of moving in the height direction of the thickness measuring support and are used for tensioning a film, and the spectrum confocal displacement sensor is located between the two horizontal rollers and located above the horizontal rollers. The thin film is pressed downwards through the tensioning roller, so that the thin film is in a straightened state between the horizontal rollers, a gap between two layers of thin films is eliminated, and the measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thickness measurement, in particular to a tube film thickness measuring device. Background Art

[0002] In the prior art, when measuring the thickness of a film formed by extruder blown film, due to the particularity of the double-layer film (tubular film), a gap is easily formed between the two layers of film, thereby affecting the thickness measurement result and greatly reducing the measurement accuracy. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a tube membrane thickness measuring device for solving the deficiencies of the prior art.

[0004] The purpose of the utility model is achieved through the following technical solutions: a tube film thickness measuring device, including a thickness measuring bracket and a spectral confocal displacement sensor, two horizontal rollers are arranged on the thickness measuring bracket at intervals along the conveying direction of the film, and the two horizontal rollers are arranged at the same height, and tensioning mechanisms are arranged at both ends of the thickness measuring bracket, and the two horizontal rollers are located between the two tensioning mechanisms. The tensioning mechanism includes a tensioning roller, and the tensioning roller is located below the horizontal roller. The tensioning roller has the freedom to move along the height direction of the thickness measuring bracket, and is used to tighten the film. The spectral confocal displacement sensor is between the two horizontal rollers and above the horizontal roller.

[0005] In some embodiments, the tensioning mechanism also includes a U-shaped seat and a tensioning spring, the tensioning roller is located in the U-shaped opening of the U-shaped seat and is rotatably connected to the U-shaped seat, the bottom of the U-shaped seat is connected to the tensioning spring, the tensioning spring is connected to the crossbeam of the thickness measuring bracket, and the tensioning spring is always in a stretched state.

[0006] In some embodiments, it also includes an extrusion mechanism. The film enters the thickness measuring bracket after passing through the extrusion mechanism. The extrusion mechanism includes an extrusion bracket, an upper extrusion roller and a lower extrusion roller. The upper extrusion roller and the lower extrusion roller are both rotatably connected to the extrusion bracket, and an extrusion space is formed between the upper extrusion roller and the lower extrusion roller for the film to pass through.

[0007] In some embodiments, both ends of the lower extrusion roller are rotatably connected to sliders, the sliders are slidably connected to the extrusion bracket, and the sliders move along the height direction of the extrusion bracket.

[0008] In some embodiments, the extrusion bracket is provided with a vertical slide groove at a position corresponding to the slider, a lead screw is vertically arranged in the vertical slide groove, the lead screw is rotatably connected to the extrusion bracket, the slider is threadedly mounted on the lead screw, the slider is slidably adapted to the vertical slide groove, a motor is installed at the bottom of the extrusion bracket, and the output shaft of the motor is transmission-connected to the lead screw.

[0009] In some embodiments, a sensor bracket is provided between the two horizontal rollers, a linear drive module is mounted on the sensor bracket, the moving direction of the linear drive module is parallel to the axial direction of the horizontal roller, and the spectral confocal displacement sensor is mounted on the slide of the linear drive module.

[0010] In some embodiments, the sensor bracket includes a cross beam and columns, two of the columns are spaced apart along the axial direction of the horizontal roller, the cross beam is located between the two columns, and both ends of the cross beam are respectively slidably connected to the two columns.

[0011] In some embodiments, a screw slot is vertically opened on the column, a screw rod is rotatably connected in the screw slot, the crossbeam plate is threadedly mounted on the screw rod, a drive motor is installed on the top of the column, and the output shaft of the drive motor is connected to the screw rod.

[0012] The beneficial effects of the utility model are:

[0013] The film is pressed down by the tension roller, so that the film is stretched straight between the horizontal rollers, eliminating the gap between the double-layer film and improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure diagram of a tube film thickness measuring device of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 The structure diagram of a tube film thickness measuring device of the utility model is shown in FIG. Figure 2 ;

[0016] In the figure, 1-thickness measuring bracket, 2-horizontal roller, 3-tensioning roller, 4-spectral confocal displacement sensor, 5-U-shaped seat, 6-tensioning spring, 7-pressure bracket, 8-upper extrusion roller, 9-lower extrusion roller, 10-slider, 11-vertical slide groove, 12-screw, 13-sensor bracket, 14-linear drive module, 15-crossbeam plate, 16-column, 17-screw groove, 18-screw, 19-drive motor. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0018] like Figure 1 and Figure 2 As shown, a tube film thickness measuring device includes a thickness measuring bracket 1 and a spectral confocal displacement sensor 4. Two horizontal rollers 2 are arranged at intervals on the thickness measuring bracket 1 along the conveying direction of the film. The two horizontal rollers 2 are arranged at the same height. Tensioning mechanisms are arranged at both ends of the thickness measuring bracket 1. The two horizontal rollers 2 are located between the two tensioning mechanisms. The tensioning mechanism includes a tensioning roller 3. The tensioning roller 3 is located below the horizontal rollers 2. The tensioning roller 3 has the freedom to move along the height direction of the thickness measuring bracket 1 and is used to tighten the film. The spectral confocal displacement sensor 4 is between the two horizontal rollers 2 and above the horizontal rollers 2. Tensioning mechanisms are arranged on the outer sides of the two horizontal rollers 2. The film is pressed down by the tensioning roller 3 in the tensioning mechanism, so that the film is pressed down and tightened at both ends, so that the double-layer film is attached together, the gap between the double-layer film is eliminated, and the measurement accuracy is improved.

[0019] In some embodiments, Figure 1 As shown, the tensioning mechanism also includes a U-shaped seat 5 and a tensioning spring 6. The tensioning roller 3 is located in the U-shaped opening of the U-shaped seat 5 and is rotatably connected to the U-shaped seat 5. The bottom of the U-shaped seat 5 is connected to the tensioning spring 6. The tensioning spring 6 is connected to the crossbeam of the thickness measuring bracket 1. The tensioning spring 6 is always in a stretched state. The tensioning roller 3 is pulled down by the force of the tensioning spring 6, so that the tensioning roller 3 always has a tendency to move downward, thereby tightening the film and making the film in a tightened state between the two horizontal rollers 2 to improve the measurement accuracy.

[0020] In some embodiments, Figure 1 and Figure 2 As shown, it also includes an extrusion mechanism. After passing through the extrusion mechanism, the film enters the thickness measuring bracket 1. The extrusion mechanism includes an extrusion bracket 7, an upper extrusion roller 8 and a lower extrusion roller 9. The upper extrusion roller 8 and the lower extrusion roller 9 are both rotatably connected to the extrusion bracket 7. An extrusion space for the film to pass through is formed between the upper extrusion roller 8 and the lower extrusion roller 9. Before measurement, the double-layer film is first extruded by the extrusion mechanism. Specifically, the film is conveyed from between the upper extrusion roller 8 and the lower extrusion roller 9. Through the extrusion cooperation of the upper extrusion roller 8 and the lower extrusion roller 9, the upper and lower layers are attached together, and the air therein is squeezed out to further improve the measurement accuracy. After extrusion, the film is pressed down by the tensioning roller 3 and then conveyed to between the two horizontal rollers 2 in a taut state to avoid the films folding each other to affect the measurement accuracy, thereby improving the measurement accuracy in many aspects.

[0021] In some embodiments, Figure 2As shown, both ends of the lower extrusion roller 9 are rotatably connected with sliders 10, and the slider 10 is slidably connected to the extrusion bracket 7. The slider 10 moves along the height direction of the extrusion bracket 7. The extrusion bracket 7 is provided with a vertical slide groove 11 at the position corresponding to the slider 10. A lead screw 12 is vertically arranged in the vertical slide groove 11. The lead screw 12 is rotatably connected to the extrusion bracket 7, and the slider 10 is threaded on the lead screw 12. The slider 10 is slidably adapted to the vertical slide groove 11. A motor is installed at the bottom of the extrusion bracket 7. The output shaft of the motor is connected to the lead screw 12. The motor drives the lead screw to rotate, so that the slider 10 makes a linear motion along the axial direction of the lead screw 12, and then drives the lower extrusion roller 9 to move up and down, so as to facilitate the adjustment of the spacing between the upper extrusion roller 8 and the lower extrusion roller 9, increase the spacing, and facilitate the film to pass through between the upper extrusion roller 8 and the lower extrusion roller 9, and then move the lower extrusion roller 9 up to press the film, so as to facilitate the initial installation of the film.

[0022] In some embodiments, a sensor bracket 13 is provided between the two horizontal rollers 2, and a linear drive module 14 is installed on the sensor bracket 13. The moving direction of the linear drive module 14 is parallel to the axial direction of the horizontal roller 2. The spectral confocal displacement sensor 4 is installed on the slide of the linear drive module 14. The spectral confocal displacement sensor 4 is driven by the linear drive module 14 to move along the width direction of the film, thereby changing the measurement direction, measuring the thickness of the film at multiple positions, and obtaining more comprehensive measurement data.

[0023] In some embodiments, Figure 1 and Figure 2 As shown, the sensor bracket 13 includes a crossbeam 15 and a column 16. Two columns 16 are arranged at intervals along the axial direction of the horizontal roller 2. The crossbeam 15 is located between the two columns 16, and the two ends of the crossbeam 15 are respectively slidably connected to the two columns 16. A screw groove 17 is vertically opened on the column 16. A screw rod 18 is rotatably connected in the screw groove 17. The crossbeam 15 is threadedly mounted on the screw rod 18. A driving motor 19 is installed on the top of the column 16. The output shaft of the driving motor 19 is connected to the screw rod 18. The driving motor 19 drives the screw rod 18 to rotate, so that the crossbeam 15 moves linearly along the axial direction of the screw rod 18, thereby driving the spectral confocal displacement sensor 4 to move up and down to adjust the detection position of the spectral confocal displacement sensor 4 in the height direction.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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; and it is known to those skilled in the art that the beneficial effects to be achieved by the present invention are only to achieve better beneficial effects under specific circumstances compared with the current implementation schemes in the prior art, rather than to directly achieve the best use effect in the industry.

[0025] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A tube membrane thickness measuring device, characterized in that: The invention comprises a thickness measuring bracket (1) and a spectral confocal displacement sensor (4); two horizontal rollers (2) are arranged on the thickness measuring bracket (1) at intervals along the conveying direction of the film; the two horizontal rollers (2) are arranged at the same height; tensioning mechanisms are arranged at both ends of the thickness measuring bracket (1); the two horizontal rollers (2) are located between the two tensioning mechanisms; the tensioning mechanisms comprise a tensioning roller (3); the tensioning roller (3) is located below the horizontal rollers (2); the tensioning roller (3) has the freedom to move along the height direction of the thickness measuring bracket (1) and is used to tighten the film; the spectral confocal displacement sensor (4) is located between the two horizontal rollers (2) and above the horizontal rollers (2).

2. A tube membrane thickness measuring device according to claim 1, characterized in that: The tensioning mechanism further comprises a U-shaped seat (5) and a tensioning spring (6); the tensioning roller (3) is located in the U-shaped opening of the U-shaped seat (5) and is rotatably connected to the U-shaped seat (5); the bottom of the U-shaped seat (5) is connected to the tensioning spring (6); the tensioning spring (6) is connected to the crossbeam of the thickness measuring bracket (1); and the tensioning spring (6) is always in a stretched state.

3. A tube membrane thickness measuring device according to claim 2, characterized in that: The invention also comprises an extrusion mechanism, and the film enters the thickness measuring bracket (1) after passing through the extrusion mechanism. The extrusion mechanism comprises an extrusion bracket (7), an upper extrusion roller (8) and a lower extrusion roller (9). The upper extrusion roller (8) and the lower extrusion roller (9) are both rotatably connected to the extrusion bracket (7), and an extrusion space is formed between the upper extrusion roller (8) and the lower extrusion roller (9) for the film to pass through.

4. A tube membrane thickness measuring device according to claim 3, characterized in that: Both ends of the lower extrusion roller (9) are rotatably connected to sliders (10), the sliders (10) are slidably connected to the extrusion bracket (7), and the sliders (10) move along the height direction of the extrusion bracket (7).

5. A tube membrane thickness measuring device according to claim 4, characterized in that: The extrusion bracket (7) is provided with a vertical slide groove (11) at a position corresponding to the slider (10), and a lead screw (12) is vertically arranged in the vertical slide groove (11). The lead screw (12) is rotatably connected to the extrusion bracket (7), and the slider (10) is threadedly mounted on the lead screw (12). The slider (10) is slidably adapted to the vertical slide groove (11). A motor is installed at the bottom of the extrusion bracket (7), and the output shaft of the motor is transmission-connected to the lead screw (12).

6. A tube membrane thickness measuring device according to claim 1, characterized in that: A sensor bracket (13) is provided between the two horizontal rollers (2), a linear drive module (14) is mounted on the sensor bracket (13), the moving direction of the linear drive module (14) is parallel to the axial direction of the horizontal roller (2), and the spectral confocal displacement sensor (4) is mounted on a slide seat of the linear drive module (14).

7. A tube membrane thickness measuring device according to claim 6, characterized in that: The sensor bracket (13) comprises a cross beam (15) and a column (16), two columns (16) are arranged at intervals along the axial direction of the horizontal roller (2), the cross beam (15) is located between the two columns (16), and the two ends of the cross beam (15) are respectively slidably connected to the two columns (16).

8. A tube membrane thickness measuring device according to claim 7, characterized in that: A screw groove (17) is vertically opened on the column (16), a screw rod (18) is rotatably connected in the screw groove (17), the cross beam plate (15) is threadedly mounted on the screw rod (18), a driving motor (19) is installed on the top of the column (16), and the output shaft of the driving motor (19) is connected to the screw rod (18).

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