Thickness measuring device

Abstract

The utility model provides thickness measuring equipment, which is used for detecting the thickness of a thin sheet and comprises a thickness detecting mechanism, a thickness measuring mechanism and a thickness measuring mechanism. The thickness detecting mechanism comprises an upper bijection type double-head sensor and a lower bijection type double-head sensor which are arranged up and down and is used for measuring the thickness of a measuring point; the reciprocating motion module mechanism comprises an upper translation module assembly and a lower translation module assembly which are parallel to the X axis; the upper correlation type double-head sensor is arranged on the upper translation module assembly, and the lower correlation type double-head sensor is arranged on the lower translation module assembly; the driving mechanism drives the upper translation module assembly and the lower translation module assembly to synchronously reciprocate; and the winding mechanism is arranged on one side of the thickness detection mechanism and is used for winding the sheet. The thickness detection mechanism and the coiling mechanism work at the same time, the detected motion trail is in a zigzag shape, non-contact measurement is conducted on a plurality of point positions, dynamic point position measurement is achieved, the whole breadth of a product is covered, and the measured point positions are more comprehensive and high in representativeness.

Description

Technical Field

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

[0002] At present, thickness measuring devices, cutting machines and other devices need to measure the thickness of different batches and types of workpieces before processing the workpieces. Taking the laser thickness measuring device as an example, the thickness of the workpiece needs to be measured before drilling to determine that the distance between the focusing mirror and the worktable is the required distance.

[0003] Existing thickness measurement methods mostly use linear motors to move the measuring platform, grating rulers, reading heads and other feedback methods to measure thickness. However, when the linear motor drives the measuring platform to measure the plate directly, the measuring platform will have a certain impact pressure on the workpiece, which is easy to cause the workpiece to deform when the hardness of the workpiece is small, which not only affects the use, but also affects the accuracy of thickness measurement; the use of grating rulers and reading heads is expensive, and the installation and adjustment are cumbersome. There is also the risk of a single detection point and inaccurate structural representation. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a thickness measuring device for detecting the thickness of a sheet, comprising:

[0005] The thickness detection mechanism includes an upper opposing-beam double-head sensor and a lower opposing-beam double-head sensor arranged above and below to measure the thickness of the measuring point;

[0006] The reciprocating module mechanism comprises an upper translation module assembly and a lower translation module assembly which are arranged parallel to the X-axis; an upper opposing-shooting double-head sensor is arranged on the upper translation module assembly, and a lower opposing-shooting double-head sensor is arranged on the lower translation module assembly;

[0007] A driving mechanism drives the upper translation module assembly and the lower translation module assembly to synchronously reciprocate;

[0008] The winding mechanism is arranged on one side of the thickness detection mechanism and is used for detecting the winding of the sheet thereafter;

[0009] Material presence induction sensor is used to detect the presence of product.

[0010] In one embodiment, an automatic calibration mechanism is also included. The automatic calibration mechanism includes a calibration plate arranged on one side of the reciprocating module mechanism, and is used for the reciprocating module mechanism to drive the thickness detection mechanism to move to the position of the calibration plate for automatic measurement and calibration.

[0011] In one embodiment, a cleaning mechanism is further included, and the cleaning mechanism includes a cleaning gas path, a solenoid valve and a gas nozzle arranged at an output end of the cleaning gas path.

[0012] In one embodiment, the upper opposing-type dual-head sensor and the lower opposing-type dual-head sensor are provided with an XY manual displacement platform, which is used to adjust the X-axis and Y-axis positions of the upper opposing-type dual-head sensor and the lower opposing-type dual-head sensor.

[0013] In one embodiment, the driving mechanism includes a driving motor and a synchronous belt arranged at an output end of the driving motor, and the synchronous belt is connected to the upper translation module assembly and the lower translation module assembly.

[0014] In one embodiment, the reciprocating motion module includes a linear slide rail arranged parallel to the X-axis, a slider adapted to the linear slide rail, a ball screw connected to the slider, and a synchronous pulley connected to the ball screw. The ball screw rotates to drive the slider to move back and forth along the guide of the linear slide rail.

[0015] In one embodiment, the driving mechanism further includes a protective cover to prevent accidental contact and pinching of hands by personnel during operation.

[0016] In one embodiment, the material presence sensing sensor includes a diffuse reflection sensor that detects from top to bottom.

[0017] Beneficial effects of the utility model

[0018] The utility model provides a thickness measuring device for detecting the thickness of a sheet, including a thickness detection mechanism, a reciprocating motion module mechanism, a driving mechanism and a winding mechanism; the sheet is detected for thickness while being wound by the winding mechanism, and the driving mechanism drives the upper translation module assembly and the lower translation module assembly of the reciprocating motion module mechanism to synchronously reciprocate, thereby ensuring the synchronization of the reciprocating motion. The driving mechanism and the reciprocating motion module mechanism drive the upper opposing double-head sensor and the lower opposing double-head sensor of the thickness detection mechanism to measure the thickness of the measuring point; the thickness detection mechanism and the winding mechanism work simultaneously, and the motion trajectory of the detection is zigzag, and non-contact measurement is performed on multiple points, realizing dynamic point measurement, covering the entire width of the product, and measuring points more comprehensively and with strong representativeness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a partial structural schematic diagram of the utility model;

[0021] Among them, 10. Thickness detection mechanism; 11. Upper opposing double-head sensor; 12. Lower opposing double-head sensor; 13. XY manual displacement platform; 20. Reciprocating motion module mechanism; 21. Upper translation module assembly; 22. Lower translation module assembly; 30. Driving mechanism; 40. Winding mechanism; 50. Material presence induction sensor; 60. Automatic calibration mechanism; 70. Cleaning mechanism; 80. Thin sheet. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0023] Reference Figure 1 and Figure 2 The utility model provides a thickness measuring device for detecting the thickness of a sheet 80, comprising: a thickness detecting mechanism 10, a reciprocating module mechanism 20, a driving mechanism 30 and a winding mechanism 40; the thickness detecting mechanism 10 comprises an upper opposing double-head sensor 11 and a lower opposing double-head sensor 12 arranged up and down, and performs thickness measurement on the measuring point; the reciprocating module mechanism 20 comprises an upper translation module assembly 21 and a lower translation module assembly 22 arranged parallel to the X-axis; the upper opposing double-head sensor 11 is arranged on the upper translation module assembly 21, and the lower opposing double-head sensor 12 is arranged on the lower translation module assembly 22; the driving mechanism 30 drives the upper translation module assembly 21 and the lower translation module assembly 22 to reciprocate synchronously; the winding mechanism 40 is arranged on one side of the thickness detecting mechanism 10, and is used to detect the winding of the sheet 80 thereafter. The detecting mechanism reciprocates, and evenly samples the detection point data on the motion path, and the detection points cover the entire product surface, so as to realize the thickness detection of dynamic points. The upper and lower dual-head sensors 11 and 12 adopt a time-sharing data acquisition method to prevent data acquisition interference between each other and improve measurement accuracy. It is worth noting that the displacement synchronization control of each module and the sampling and detection working principle of the sensor can adopt any method of the prior art. The key of the utility model is to provide an adapter component mechanism and a thickness measuring device.

[0024] In one embodiment, since the thickness measuring device adopts an optical measurement method, different thin products may have different light seepage problems, which affects the measurement accuracy. It is necessary to carry out a secondary calibration strategy for the product, and the secondary calibration adopts a 9-point calibration method. Principle of secondary calibration:

[0025] 1) Select 9 points in a 3*3 matrix on the product.

[0026] 2) Use a thickness gauge to measure the thickness at 9 points and record it as OM.

[0027] 3) Use the device of the present invention to measure the thickness at the corresponding 9 points, which are recorded as SM.

[0028] 4) Use the least squares fitting method to calculate the conversion relationship between OM and SM, thus completing the calibration process.

[0029] The calculation formula is as follows:

[0030]

[0031] Where k is the coefficient factor and b is the compensation factor.

[0032] In one embodiment, it also includes an automatic calibration mechanism 60, which includes a calibration plate arranged on one side of the reciprocating module mechanism 20, and is used for the reciprocating module mechanism 20 to drive the thickness detection mechanism 10 to move to the position of the calibration plate for automatic measurement and calibration. The upper opposing double-head sensor 11 and the lower opposing double-head sensor 12 move to the calibration coordinate position for calibration after running for a specific period of time.

[0033] In one embodiment, a cleaning mechanism 70 is further included. The cleaning mechanism 70 includes a cleaning gas circuit, a solenoid valve and an air nozzle arranged at the output end of the cleaning gas circuit. The upper opposing double-headed sensor 11 and the lower opposing double-headed sensor 12 move to the cleaning coordinate position for cleaning after running for a specific period of time, thereby eliminating the measurement value errors of the upper opposing double-headed sensor 11 and the lower opposing double-headed sensor 12 caused by temperature drift, zero tickets, and dust obstruction.

[0034] In one embodiment, the upper opposed-type double-head sensor 11 and the lower opposed-type double-head sensor 12 are provided with an XY manual displacement platform 13, and the XY manual displacement platform 13 is used to adjust the positions of the X-axis and Y-axis of the upper opposed-type double-head sensor 11 and the lower opposed-type double-head sensor 12, and can perform fine-tuning on the upper opposed-type double-head sensor 11 and the lower opposed-type double-head sensor 12; the XY manual displacement platform 13 includes a micrometer fine-tuning knob, a scale and a locking screw configured in the X-axis and Y-axis directions, and the position of the sensor is adjusted by rotating the micrometer fine-tuning knob. After the position is adjusted, the locking screw is tightened to fix the position.

[0035] In one embodiment, the driving mechanism 30 includes a driving motor and a synchronous belt arranged at the output end of the driving motor. The synchronous belt is connected to the upper translation module assembly 21 and the lower translation module assembly 22. The same driving motor is used to drive them uniformly through the synchronous belt, thereby ensuring the synchronization accuracy of the reciprocating motion of the upper and lower thickness measuring sensors.

[0036] In one embodiment, the reciprocating motion module includes a linear slide rail arranged parallel to the X-axis, a slider adapted to the linear slide rail, a ball screw connected to the slider, and a synchronous pulley connected to the ball screw. The ball screw rotates to drive the slider to move back and forth along the guide of the linear slide rail. The driving mechanism 30 synchronously drives the upper translation module assembly 21 and the lower translation module assembly 22 to move, ensuring the synchronization of the movement of the upper translation module assembly 21 and the lower translation module assembly 22, and performing full-width point position movement measurement of the product.

[0037] In one embodiment, the driving mechanism 30 further includes a protective cover to prevent accidental contact and pinching of hands by personnel during operation.

[0038] In one embodiment, a material presence sensing sensor 50 is further included to detect the presence of the product. The material presence sensing sensor 50 includes a diffuse reflection sensor that detects from top to bottom.

[0039] Beneficial effects of the utility model

[0040] The utility model provides a thickness measuring device for detecting the thickness of a thin sheet 80, including a thickness detecting mechanism 10, a reciprocating module mechanism 20, a driving mechanism 30 and a winding mechanism 40; the thickness of the thin sheet 80 is detected while the winding mechanism 40 is winding the thin sheet 80, and the driving mechanism 30 drives the upper translation module assembly 21 and the lower translation module assembly 22 of the reciprocating module mechanism 20 to synchronously reciprocate, thereby ensuring the synchronization of the reciprocating motion. The driving mechanism 30 and the reciprocating module mechanism 20 drive the upper opposing double-head sensor 11 and the lower opposing double-head sensor 12 of the thickness detecting mechanism 10 to measure the thickness of the measuring point; the thickness detecting mechanism 10 and the winding mechanism 40 work simultaneously, and the motion trajectory of the detection is zigzag, and non-contact measurement is performed on multiple points, realizing dynamic point measurement, covering the entire width of the product, and measuring points more comprehensively and with strong representativeness.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A thickness measuring device for detecting the thickness of a sheet, characterized in that: include: The thickness detection mechanism includes an upper opposing-beam double-head sensor and a lower opposing-beam double-head sensor arranged above and below to measure the thickness of the measuring point; A reciprocating module mechanism, comprising an upper translation module assembly and a lower translation module assembly arranged parallel to the X-axis; The upper opposing-shooting double-head sensor is arranged on the upper translation module assembly, and the lower opposing-shooting double-head sensor is arranged on the lower translation module assembly; A driving mechanism drives the upper translation module assembly and the lower translation module assembly to synchronously reciprocate; The winding mechanism is arranged on one side of the thickness detection mechanism and is used for winding the sheet.

2. A thickness measuring device according to claim 1, characterized in that: It also includes a cleaning mechanism, which includes a cleaning gas path, a solenoid valve and a gas nozzle arranged at the output end of the cleaning gas path.

3. A thickness measuring device according to claim 1, characterized in that: The upper opposing-type double-head sensor and the lower opposing-type double-head sensor are provided with an XY manual displacement platform, and the XY manual displacement platform is used to adjust the positions of the X-axis and Y-axis of the upper opposing-type double-head sensor and the lower opposing-type double-head sensor.

4. A thickness measuring device according to claim 1, characterized in that: The driving mechanism comprises a driving motor and a synchronous belt arranged at an output end of the driving motor, wherein the synchronous belt is connected with an upper translation module assembly and a lower translation module assembly.

5. A thickness measuring device according to claim 1, characterized in that: The reciprocating motion module includes a linear slide rail arranged parallel to the X-axis, a slider adapted to the linear slide rail, a ball screw connected to the slider, and a synchronous pulley connected to the ball screw. The ball screw rotates to drive the slider to move back and forth along the guide of the linear slide rail.

6. A thickness measuring device according to claim 1, characterized in that: The driving mechanism also includes a protective cover, which prevents people from accidentally touching and pinching their hands during operation.

7. A thickness measuring device according to claim 1, characterized in that: It also includes material presence sensing sensors, including diffuse reflection sensors that detect from top to bottom.

8. A thickness measuring device according to any one of claims 1 to 7, characterized in that: It also includes an automatic calibration mechanism, which includes a calibration plate arranged on one side of the reciprocating module mechanism, and is used for the reciprocating module mechanism to drive the thickness detection mechanism to move to the position of the calibration plate for automatic measurement and calibration.

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