High-precision flat wire diameter measuring device and diameter measuring method thereof

Abstract

The present invention discloses a high-precision flat wire diameter measuring device and a diameter measuring method thereof, which comprises a frame, a front flat wire alignment support mechanism, a rear flat wire alignment support mechanism, a laser diameter measuring instrument and a rotary drive device. The high-precision flat wire diameter measuring method provided by the present invention has simple steps and is easy to implement. When measuring the thickness or width of the flat wire, the rotary drive device drives the laser diameter measuring instrument to deflect positively or negatively by a certain angle. When the measuring beam is not perpendicular to the measured thickness base plane or width base plane, that is, when the flat wire is twisted, a certain amount of shielding will occur, and the measured values ​​are all larger than the actual thickness or width values; and during the deflection measurement process, at a certain time point, the measuring beam of the laser diameter measuring instrument can be made just perpendicular to the measured thickness base plane or width base plane, and the measured value at this time is the minimum, infinitely close to the actual thickness or width, so that the thickness and width of the flat wire can be obtained with high precision.

Description

Technical Field

[0001] The invention relates to the technical field of flat wire measurement, and in particular to a high-precision flat wire diameter measuring device and a method thereof. Background Art

[0002] Laser diameter gauge is a laser measuring instrument that uses optical scanning to measure the diameter, width, thickness and other dimensions of an object without contact. It is now widely used in industrial production. Diameter gauges are widely used in various industries such as wires and cables, enameled wires, metal wires, PVC pipes, and medical devices. Both online and offline detection are possible, and automatic feedback control and online communication with computers can be achieved.

[0003] The working principle of laser diameter measuring instrument can be found in Figure 1 , a semiconductor laser 1 emits a laser beam, which is driven by a motor 2 to rotate an octagonal prism 3 at high speed, and the laser beam is scanned through a prism 4 to be converted into parallel light passing through a test area (GATE). When there is a test object 5 in the test area, it will block part of the parallel light and convert it into a low level on the photoelectric receiving tube through a focusing prism 6; while the parallel light that is not blocked by the test object is converted into a high level. By calculating the scanning time of the low level, the outer diameter value, width value or thickness value of the test object in the scanning direction of the laser beam can be calculated.

[0004] The laser diameter measuring instruments currently on the market are used to monitor whether the size of the object being measured meets the production process requirements. However, when the measured line is a flat line and is still suspended and running, there is a free swing and slight twisting phenomenon. The width of the shadow part of the light beam blocked by it deviates from the actual size. Figure 2 , resulting in a deviation between the measured dimension data H and the actual dimension h, making it difficult for existing laser diameter measuring instruments to accurately measure the length and width dimensions of the flat wire cross section.

[0005] The utility model patent with publication number "CN210220990U" and name "Adjustable Flat Wire Diameter Measuring Tool" discloses an adjustable flat wire diameter measuring tool, including a corner seat for mounting the diameter measuring instrument host, an L-shaped support is provided on each side of the corner seat, and each L-shaped support is provided with an adjustable position support arm; a wire passing wheel is provided at the top of the L-shaped support, and a wire pressing wheel cooperating with the wire passing wheel is provided on the corresponding support arm; the L-shaped supports and the support arms on both sides of the corner seat are symmetrically arranged. By extending and retracting the support arm, the pressure applied by each wire pressing wheel to the measured flat wire is adjusted so that the measured flat wire does not twist, so as to ensure that the measuring beam of the laser diameter measuring instrument is perpendicular to the measured base surface, thereby improving the measurement accuracy.

[0006] However, sometimes the surface of the flat wire to be measured is very soft, and when pressure is applied, the surface of the flat wire to be measured is easily damaged; and only the pre-entry part of the flat wire that is ready to enter the laser diameter gauge and the measured part that comes out of the laser diameter gauge are limited, while the part of the flat wire to be measured that is actually located in the test area of ​​the laser diameter gauge still has no other structural device to apply pressure and limit it, that is, this technical solution only reduces the twisting of the flat wire as much as possible, but does not completely eliminate the twisting of the flat wire. The flat wire will still have a slight twist during the measurement process, resulting in the measuring beam of the laser diameter gauge not being perpendicular to the measured base surface, thereby affecting the measurement accuracy; in addition, it is necessary to set up two laser diameter gauges to complete the measurement of the thickness and width of the flat wire, that is, one laser diameter gauge is specifically used to measure the thickness of the flat wire, and the other laser diameter gauge is specifically used to measure the width of the flat wire, which is costly. Summary of the invention

[0007] In view of the above-mentioned deficiencies, one of the objects of the present invention is to provide a high-precision flat wire diameter measurement method which is easy to implement and can improve the flat wire measurement accuracy.

[0008] In view of the above-mentioned deficiencies, the second object of the present invention is to provide a high-precision flat wire diameter measuring device with ingenious and reasonable structural design and flat wire measurement accuracy.

[0009] To achieve the above object, the present invention provides a technical solution: a high-precision flat wire diameter measurement method, which comprises the following steps:

[0010] (1) Supporting and aligning the flat wire to be measured by the front flat wire alignment support mechanism and the rear flat wire alignment support mechanism so that the center line of the flat wire is aligned with the center position of the measuring beam of the laser diameter gauge; conveying the flat wire forward to pass through the measuring area of ​​the laser diameter gauge;

[0011] (2) When the thickness of the flat wire needs to be measured, the rotary drive device drives the laser diameter gauge to rotate so that its measuring beam is directed toward the thickness base surface of the flat wire, and the laser diameter gauge continuously measures the thickness base surface of the flat wire. During the measurement process, the rotary drive device drives the laser diameter gauge to deflect positively or negatively by a certain angle, and the laser diameter gauge obtains several thickness values ​​of the flat wire measured within its deflection angle range, and the minimum thickness value is taken as the thickness value of the flat wire;

[0012] (3) When it is necessary to measure the width of the flat wire, the rotary drive device drives the laser diameter gauge to rotate so that its measuring beam is directed toward the width base plane of the flat wire, and the laser diameter gauge continuously measures the width base plane of the flat wire. During the measurement process, the rotary drive device drives the laser diameter gauge to deflect positively or negatively by a certain angle, and the laser diameter gauge obtains several width values ​​of the flat wire measured within its deflection angle range, and the minimum width value is taken as the width value of the flat wire;

[0013] The steps (2) and (3) are not sequentially performed, and can be performed alternately to accurately obtain the thickness and width values ​​of different parts of the flat wire.

[0014] As a preferred solution of the present invention, the step (2) is used to measure N parts of the flat wire to obtain the minimum thickness values ​​of the N parts, the minimum thickness values ​​of the N parts are added up and then divided by N to obtain the minimum average thickness value, where N is a positive integer, which can further improve the accuracy of obtaining the thickness value of the flat wire.

[0015] As a preferred embodiment of the present invention, the step (3) is used to measure n parts of the flat wire to obtain the minimum width values ​​of the n parts, and the minimum width values ​​of the n parts are added up and then divided by N to obtain the minimum average width value, wherein n is a positive integer, which can further improve the accuracy of obtaining the width value of the flat wire.

[0016] A high-precision flat wire diameter measuring device comprises a frame, a front flat wire adjustment support mechanism, a rear flat wire adjustment support mechanism, a laser diameter gauge and a rotary drive device. The front flat wire adjustment support mechanism, the rotary drive device and the rear flat wire adjustment support mechanism are arranged in sequence on the frame. The laser diameter gauge is arranged on the rotary drive device corresponding to the conveying trajectory of the flat wire and is driven by the rotary drive device to rotate along the conveying trajectory of the flat wire.

[0017] As a preferred solution of the present invention, the front flat wire adjustment support mechanism includes a support, a rotating shaft, a locking screw, a support arm, an adjusting screw, a guide shaft, a single-side guide wheel, a width adjustment wheel and a locking wheel. The support is arranged on the frame, and a mounting hole adapted to the rotating shaft is provided on the support. A locking screw hole radially extending into the mounting hole is provided at a position corresponding to the mounting hole on the support. The rotating shaft is inserted into the mounting hole, and the locking screw is screwed into the locking screw hole and pressed against the rotating shaft. The lower end of the support arm is provided with a locking screw hole adapted to the rotating shaft. A matching axial sliding hole, an adjusting screw hole radially extending into the axial sliding hole is provided at a position on the support arm corresponding to the axial sliding hole, the adjusting screw is screwed into the adjusting screw hole and pressed on the rotating shaft, the guide shaft is arranged at the upper end of the support arm, the single-sided guide wheel is movably sleeved on the guide shaft, one end of the single-sided guide wheel close to the support arm is radially protruded to form a stopper, and the other end is cylindrical to form a rotating connection portion, the rotating connection portion is provided with an external thread, the width adjustment wheel and the locking wheel are sequentially sleeved on the rotating connection portion, and are both provided with internal threads matching the external threads.

[0018] As a preferred solution of the present invention, the single-sided guide wheel is arranged on the guide shaft through a shaft sleeve or a bearing sleeve, which improves the flexibility of rotation, is wear-resistant, and has a long service life.

[0019] As a preferred solution of the present invention, the rotation drive device includes a bracket, a hollow stepper motor and a rotating frame, the bracket is vertically arranged on the frame, the bracket is provided with an installation opening corresponding to the conveying track of the flat wire, the hollow stepper motor is installed on the installation opening, and the rotating shaft of the hollow stepper motor is axially provided with a through hole for allowing the flat wire to pass through, and the rotating frame is arranged on the rotating shaft of the hollow stepper motor.

[0020] As a preferred solution of the present invention, the rotating frame includes a front plate and a side plate, one end of the front plate is provided with a clamping hole adapted to the rotating shaft of the hollow stepping motor, the other end is gradually enlarged to form a mounting portion, one side of the side plate is vertically connected to the mounting portion, and the other side is provided with an assembly hole for mounting the laser diameter gauge. The laser diameter gauge is fixed by screwing a screw through the assembly hole.

[0021] As a preferred solution of the present invention, it also includes a proximity switch and an induction ring, which is sleeved on the rotating shaft of the hollow stepping motor, and the position of the proximity switch corresponding to the induction ring is arranged on the bracket, and the induction ring is provided with a width boss that is adapted to the proximity switch when the measuring beam of the laser diameter gauge is directed toward the width base surface of the flat wire, and a thickness boss that is adapted to the proximity switch when the measuring beam of the laser diameter gauge is directed toward the thickness base surface of the flat wire.

[0022] The beneficial effects of the present invention are as follows: the high-precision flat wire diameter measurement method provided by the present invention has simple steps and is easy to implement. When measuring the thickness or width of the flat wire, the laser diameter gauge is driven by a rotary drive device to deflect positively or negatively at a certain angle. When the measuring light beam is not perpendicular to the measured thickness base plane or width base plane, that is, when the flat wire is twisted, a certain amount of obstruction will occur, and the measured values ​​are all larger than the actual thickness or width values; and during the deflection measurement process, at a certain point in time, the measuring light beam of the laser diameter gauge can be made just perpendicular to the measured thickness base plane or width base plane, and the measured value at this time is the minimum, and is infinitely close to the actual thickness or width, thereby achieving high-precision acquisition of the thickness and width of the flat wire. The high-precision flat wire diameter measuring equipment provided by the present invention has an ingenious and reasonable structural design. The laser diameter gauge is driven by a rotary drive device to rotate toward the thickness base plane and the width base plane of the flat wire, so that the thickness and width of the flat wire can be conveniently measured with a laser diameter gauge. Moreover, during the measurement process, it will also deflect positively or negatively by a certain angle to eliminate the error caused by the twisting of the flat wire, thereby improving the measurement accuracy. At the same time, the traditional process of applying pressure to the flat wire to prevent twisting is eliminated, thereby avoiding damage to the surface of the measured flat wire and ensuring the quality of the produced flat wire products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the working principle diagram of the laser diameter gauge.

[0024] Figure 2 Schematic diagram of the error principle caused by traditional laser diameter gauge when measuring flat wire.

[0025] Figure 3 The structure schematic diagram of the present invention for measuring the width of the flat wire Figure 1 .

[0026] Figure 4 The structure schematic diagram of the present invention for measuring the width of the flat wire Figure 2 .

[0027] Figure 5 It is a schematic diagram of the structure of measuring the thickness of the flat wire according to the present invention.

[0028] Figure 6 It is a structural schematic diagram of the front flat wire adjustment support mechanism in the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the rotary drive device in the present invention.

[0030] Figure 8 The structure diagram of the present invention during measurement Figure 1 .

[0031] Fig. 9 The structure diagram of the present invention during measurement Figure 2 . DETAILED DESCRIPTION

[0032] Example: See Figures 3 to 9 An embodiment of the present invention provides a high-precision flat wire diameter measuring device, which includes a frame 1, a front flat wire adjustment support mechanism 2, a rear flat wire adjustment support mechanism 3, a laser diameter gauge 4 and a rotation drive device 5. The front flat wire adjustment support mechanism 2, the rotation drive device 5 and the rear flat wire adjustment support mechanism 3 are arranged in sequence on the frame 1, and the laser diameter gauge 4 is arranged on the rotation drive device 5 corresponding to the conveying trajectory of the flat wire 6, and is driven by the rotation drive device 5 to rotate along the conveying trajectory of the flat wire 6.

[0033] See also Figure 6The front flat wire adjustment support mechanism 2 includes a support 21, a rotating shaft 22, a locking screw 23, a support arm 24, an adjusting screw 25, a guide shaft 26, a single-side guide wheel 27, a width adjustment wheel 28 and a locking wheel 29. The support 21 is arranged on the frame 1, and a mounting hole adapted to the rotating shaft 22 is provided on the support 21. A locking screw hole radially extending into the mounting hole is provided at a position corresponding to the mounting hole on the support 21. The rotating shaft 22 is inserted into the mounting hole, and the locking screw 23 is screwed into the locking screw hole and pressed against the mounting hole. On the rotating shaft 22, the lower end of the support arm 24 is provided with an axial sliding hole adapted to the rotating shaft 22, and the position corresponding to the axial sliding hole on the support arm 24 is provided with an adjusting screw hole radially extending into the axial sliding hole, and the adjusting screw 25 is screwed into the adjusting screw hole and pressed against the rotating shaft 22, and the guide shaft 26 is arranged at the upper end of the support arm 24, and the single-sided guide wheel 27 is movably sleeved on the guide shaft 26. Preferably, the single-sided guide wheel 27 is sleeved on the guide shaft 26 through the bearing 20, which improves the flexibility of rotation, is wear-resistant, and has a long service life. In other embodiments, a sleeve can also be used to replace the bearing 20.

[0034] One end of the single-sided guide wheel 27 close to the support arm 24 is radially protruded to form a stopper, and the other end is cylindrical to form a screw-on part, on which an external thread is provided. The width-adjusting wheel 28 and the locking wheel 29 are sequentially sleeved on the screw-on part, and both are provided with internal threads that match the external threads. Through the cooperation of the width-adjusting wheel 28, the locking wheel 29 and the single-sided guide wheel 27, the width of the guide wheel groove can be conveniently adjusted to make it the same width as or slightly wider than the measured flat wire, thereby reducing the swing amplitude of the flat wire running to the laser measurement area and improving the measurement accuracy. When the width of the guide wheel groove needs to be adjusted to adapt to flat wires of different widths, first loosen the locking wheel 29, and then adjust the position of the width-adjusting wheel 28 so that the distance between the width-adjusting wheel 28 and the stopper of the single-sided guide wheel 27 is equal to or slightly greater than the width of the flat wire, and then twist the locking wheel 29 to move to one side of the width-adjusting wheel 28 until the width-adjusting wheel 28 is locked. After adjusting the width of the guide wheel groove, the width adjustment wheel 28 is limited by the locking wheel 29, which has a good positioning effect, is not easy to loosen and shift, and improves working stability.

[0035] The structure of the rear flat wire adjustment support mechanism 3 is consistent with the structure of the front flat wire adjustment support mechanism 2 .

[0036] See also Figure 7The rotating drive device 5 includes a bracket 51, a hollow stepper motor 52 and a rotating frame 53. The bracket 51 is vertically arranged on the frame 1. The bracket 51 is provided with an installation opening corresponding to the conveying track of the flat wire 6. The hollow stepper motor 52 is installed on the installation opening, and a through hole is axially provided on the rotating shaft of the hollow stepper motor 52 for the flat wire 6 to pass through. The rotating shaft of the hollow stepper motor 52 is a double-outlet shaft, and both ends of the rotating shaft extend from the casing of the hollow stepper motor 52. The rotating frame 53 is arranged on the rotating shaft of the hollow stepper motor 52. Specifically, the rotating frame 53 includes a front plate and a side plate. One end of the front plate is provided with a clamping hole adapted to the rotating shaft of the hollow stepper motor 52, and the other end gradually increases to form a mounting portion. One side of the side plate is vertically connected to the mounting portion, and the other side is provided with an assembly hole for mounting the laser diameter gauge 4. The laser diameter gauge 4 is fixed by screwing a screw through the assembly hole.

[0037] In order to improve the positioning accuracy of the control rotation drive device 5, an induction ring 54 is sleeved on the rotating shaft of the hollow stepping motor 52, and a proximity switch 55 is provided on the bracket 51 corresponding to the position of the induction ring 54. A width boss and a thickness boss are provided on the induction ring 54. When the measuring beam of the laser diameter gauge 4 is directed toward the width base surface of the flat wire 6, the width boss just rotates to a position that matches the proximity switch 55. When the measuring beam of the laser diameter gauge 4 is directed toward the thickness base surface of the flat wire 6, the thickness boss just rotates to a position that matches the proximity switch 55.

[0038] The high-precision flat wire diameter measuring device provided by the present invention has an ingenious and reasonable structural design. The laser diameter measuring device 4 is driven by the rotating drive device 5 to rotate toward the thickness base plane and the width base plane of the flat wire 6, so that the thickness and width of the flat wire 6 can be conveniently measured with one laser diameter measuring device 4; and during the measurement process, it will also deflect positively or negatively by a certain angle to eliminate the error caused by the twisting and deflection of the flat wire 6, thereby improving the measurement accuracy.

[0039] When working, the diameter measuring method of the high-precision flat wire diameter measuring device of the present invention is as follows:

[0040] (1) The flat wire 6 to be measured is supported and adjusted by the front flat wire adjustment support mechanism 2 and the rear flat wire adjustment support mechanism 3 so that the center line of the flat wire 6 is relatively aligned with the center position of the measuring beam of the laser diameter gauge 4; when the support height needs to be adjusted, the locking screw 23 is loosened, and the support height is adjusted by adjusting the swing angle of the support arm 24. When the required height is adjusted, the locking screw 23 is tightened; when the position of the flat wire 6 needs to be adjusted so that the center line of the flat wire 6 is relatively aligned with the center position of the measuring beam of the laser diameter gauge 4; the adjusting screw 25 is loosened, and the support arm 24 can be pushed to move axially on the rotating shaft. When it is moved to the required position, the adjusting screw 25 is tightened. When the width of the guide wheel groove needs to be adjusted to adapt to flat wires of different widths, first loosen the locking wheel 29, and then adjust the position of the width adjustment wheel 28 so that the distance between the width adjustment wheel 28 and the stopper of the single-side guide wheel 27 is equal to or slightly larger than the width of the flat wire, and then turn the locking wheel 29 to move to one side of the width adjustment wheel 28 until the position of the width adjustment wheel 28 is locked. The flat wire is pulled forward by the traction machine to pass through the measuring area of ​​the laser diameter gauge 4;

[0041] (2) When it is necessary to measure the thickness of the flat wire 6, the rotary drive device 5 drives the laser diameter gauge 4 to rotate so that its measuring beam is directed toward the thickness base surface of the flat wire 6, and the laser diameter gauge 4 continuously measures the thickness base surface of the flat wire 6. During the measurement process, the rotary drive device 5 drives the laser diameter gauge 4 to deflect positively or negatively by a certain angle a, and the angle a is preferably ±10 degrees. The deflection is preferably rotated around the center line of the flat wire as the axis. The laser diameter gauge 4 obtains a number of thickness values ​​of the flat wire measured within its deflection angle range. Among the many thickness values ​​of different sizes, the minimum thickness value is selected as the thickness value of the flat wire;

[0042] (3) When it is necessary to measure the width of the flat wire 6, the rotary drive device 5 drives the laser diameter gauge 4 to rotate so that its measuring beam is directed toward the width base surface of the flat wire 6, and the laser diameter gauge 4 continuously measures the width base surface of the flat wire 6. During the measurement process, the rotary drive device 5 drives the laser diameter gauge 4 to deflect positively or negatively by a certain angle, such as ±10 degrees. The laser diameter gauge 4 obtains a number of width values ​​of the flat wire 6 measured within the deflection angle range. Among the many width values ​​of different sizes, the minimum width value is taken as the width value of the flat wire 6;

[0043] The steps (2) and (3) are not sequentially performed, and can be performed alternately to accurately obtain the thickness and width values ​​of the flat wire at different positions.

[0044] In order to more accurately obtain the thickness and width of the flat wire 6, the step (2) is used to measure N parts of the flat wire 6 to obtain the minimum thickness values ​​of the N parts, and the minimum thickness values ​​of the N parts are added up and then divided by N to obtain the minimum average thickness value, where N is a positive integer. The thickness value of the flat wire 6 is obtained.

[0045] The step (3) is used to measure n locations of the flat wire 6 to obtain the minimum width values ​​of the n locations, and the minimum width values ​​of the n locations are added up and then divided by N to obtain the minimum average width value, where n is a positive integer, to obtain the width value of the flat wire 6.

[0046] When measuring the thickness or width of the flat wire 6, the present invention refers to Figure 8 Take the measurement of the thickness of the flat wire 6 as an example. During the measurement of the flat wire 6, the flat wire 6 will inevitably twist during the rapid transportation process, so it is difficult to ensure that the measuring beam of the laser diameter gauge 4 can be perpendicular to the measured thickness base surface during measurement. Therefore, since the flat wire 6 twists and there will be a certain amount of obstruction during measurement, the thickness value H measured by the laser diameter gauge 4 is larger than the actual thickness.

[0047] See also Fig. 9 , at this time, the laser diameter gauge 4 is driven by the rotary drive device 5 to deflect ±10 degrees. During the deflection measurement process, at a certain point in time, the measuring beam of the laser diameter gauge 4 can be exactly perpendicular to the measured thickness base surface, and at this time, due to the absence of the torsion part blocking, the measured value is the minimum. The minimum thickness value is selected from the numerous thickness values ​​for comparison, and the thickness of the flat wire 6 is the minimum. When the measuring beam is not perpendicular to the measured thickness base surface or width base surface, that is, when the flat wire 6 is twisted, a certain amount of blocking will occur, and the measured value H is larger than the actual thickness or width value; and during the deflection measurement process, at a certain point in time, the measuring beam of the laser diameter gauge 4 can be exactly perpendicular to the measured thickness base surface, and the measured value h is the minimum at this time, which is also infinitely close to the actual thickness, so that the thickness of the flat wire 6 can be obtained with high precision. Compared with the traditional measurement process, the process of applying pressure to the flat wire to prevent torsion is omitted, so as to avoid damage to the surface of the measured flat wire and ensure the quality of the flat wire product. Instead, the positive and negative deflections of the laser diameter gauge 4 are driven to make the measuring beam parallel to the twisted flat wire, so as to eliminate the error caused by the twisting of the flat wire and improve the measurement accuracy.

[0048] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementation disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other devices and methods obtained by using the same or similar structures are all within the protection scope of the present invention.

Claims

1. A high-precision flat wire diameter measuring device, comprising a frame, characterized in that: It also includes a front flat wire adjustment support mechanism, a rear flat wire adjustment support mechanism, a laser diameter gauge and a rotation drive device. The front flat wire adjustment support mechanism, the rotation drive device and the rear flat wire adjustment support mechanism are arranged in sequence on the frame. The laser diameter gauge is arranged on the rotation drive device corresponding to the conveying track of the flat wire and is driven by the rotation drive device to rotate along the conveying track of the flat wire. The front flat wire adjustment support mechanism includes a support, a rotating shaft, a locking screw, a support arm, an adjusting screw, a guide shaft, a single-side guide wheel, a width adjustment wheel and a locking wheel. The support is arranged on the frame, and a mounting hole matched with the rotating shaft is provided on the support. A locking screw hole radially extending into the mounting hole is provided at a position corresponding to the mounting hole on the support. The rotating shaft is inserted into the mounting hole, and the locking screw is screwed into the locking screw hole and pressed against the rotating shaft. The lower end of the support arm is provided with an axial A sliding hole, an adjusting screw hole radially extending into the axial sliding hole is provided at a position on the support arm corresponding to the axial sliding hole, the adjusting screw is screwed into the adjusting screw hole and pressed against the rotating shaft, the guide shaft is arranged at the upper end of the support arm, the single-sided guide wheel is movably sleeved on the guide shaft, one end of the single-sided guide wheel close to the support arm is radially protruded to form a stopper, and the other end is cylindrical to form a rotating connection part, the rotating connection part is provided with an external thread, the width adjustment wheel and the locking wheel are sequentially sleeved on the rotating connection part, and both are provided with an internal thread matching the external thread; The rotary drive device includes a bracket, a hollow stepper motor and a rotating frame. The bracket is vertically arranged on the frame. The bracket is provided with an installation opening corresponding to the conveying track of the flat wire. The hollow stepper motor is installed on the installation opening. The shaft of the hollow stepper motor is axially provided with a through hole for the flat wire to pass through. The rotating frame is arranged on the shaft of the hollow stepper motor.

2. The high-precision flat wire diameter measuring device according to claim 1, characterized in that: The single-side guide wheel is arranged on the guide shaft through a shaft sleeve or a bearing sleeve.

3. The high-precision flat wire diameter measuring device according to claim 1, characterized in that: The rotating frame includes a front plate and a side plate. One end of the front plate is provided with a clamping hole adapted to the rotating shaft of the hollow stepper motor, and the other end gradually increases to form a mounting portion. One side edge of the side plate is vertically connected to the mounting portion, and the other side is provided with an assembly hole for mounting the laser diameter meter.

4. The high-precision flat wire diameter measuring device according to claim 1 or 3, characterized in that: It also includes a proximity switch and an induction ring, which is sleeved on the rotating shaft of the hollow stepping motor. The position of the proximity switch corresponding to the induction ring is set on the bracket, and the induction ring is provided with a width boss that matches the proximity switch when the measuring beam of the laser diameter gauge is directed toward the width base surface of the flat wire, and a thickness boss that matches the proximity switch when the measuring beam of the laser diameter gauge is directed toward the thickness base surface of the flat wire.

5. A high-precision flat wire diameter measuring method using the high-precision flat wire diameter measuring device according to any one of claims 1 to 4, characterized in that: It includes the following steps: (1) The flat wire to be measured is supported and adjusted by the front flat wire adjustment support mechanism and the rear flat wire adjustment support mechanism so that the center line of the flat wire is relatively aligned with the center position of the measuring beam of the laser diameter gauge; the flat wire is conveyed forward to pass through the measuring area of ​​the laser diameter gauge; (2) When the thickness of the flat wire needs to be measured, the rotary drive device drives the laser diameter gauge to rotate so that its measuring beam is directed toward the thickness base surface of the flat wire, and the laser diameter gauge continuously measures the thickness base surface of the flat wire. During the measurement process, the rotary drive device drives the laser diameter gauge to deflect positively or negatively by a certain angle, and the laser diameter gauge obtains several thickness values ​​of the flat wire measured within its deflection angle range, and the minimum thickness value is taken as the thickness value of the flat wire; (3) When the width of the flat wire needs to be measured, the rotary drive device drives the laser diameter gauge to rotate so that its measuring beam is directed toward the width base plane of the flat wire, and the laser diameter gauge continuously measures the width base plane of the flat wire. During the measurement process, the rotary drive device drives the laser diameter gauge to deflect positively or negatively by a certain angle, and the laser diameter gauge obtains several width values ​​of the flat wire measured within its deflection angle range, and the minimum width value is taken as the width value of the flat wire; The steps (2) and (3) are performed in no particular order.

6. The high-precision flat wire diameter measurement method according to claim 5, characterized in that: The step (2) is used to measure N parts of the flat wire to obtain the minimum thickness values ​​of the N parts, the minimum thickness values ​​of the N parts are added up and then divided by N to obtain the minimum average thickness value, where N is a positive integer.

7. The high-precision flat wire diameter measurement method according to claim 5, characterized in that: The step (3) is used to measure n parts of the flat wire to obtain the minimum width values ​​of the n parts, and the minimum width values ​​of the n parts are added up and then divided by N to obtain the minimum average width value, where n is a positive integer.

8. The high-precision flat wire diameter measurement method according to claim 5, characterized in that: The steps (2) and (3) are performed interactively to accurately obtain the thickness and width values ​​of the flat wire.

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