A diameter detection device

Abstract

The application relates to the technical field of physical sensing diameter detection, and discloses a diameter detection device, which comprises a detection base, two elastic limiting mechanisms and a rotary measurement mechanism, the detection base is provided with a detection channel for penetrating a copper wire, the two elastic limiting mechanisms are arranged at intervals along the extension direction of the detection channel and are used for elastically limiting the parts of the copper wire located on the two sides of the rotary measurement mechanism, and the rotary measurement mechanism comprises a measurement ring, a counter-measurement assembly, a steering driving assembly and a control module; the application can stably detect the copper wire through the two-end elastic limiting, can perform counter-contact measurement on the copper wire through the two measurement touch plates, can change the measurement direction through the rotation of the measurement ring, can perform multi-angle wire diameter rechecking on the same detection position without re-clamping the copper wire, and can reduce the influence of copper wire swing, re-clamping and single-direction measurement on the wire diameter rechecking result.

Description

Technical Field

[0001] This application relates to the field of physical sensing diameter technology, specifically to a diameter detection device. Background Technology

[0002] During the production and factory inspection of products such as copper conductors, copper wire gauges, and tin-plated copper conductors, it is necessary to conduct random checks or verifications on the wire diameter to determine whether the copper wire meets the corresponding specification requirements. Existing inspection methods mostly use micrometers, calipers, or fixed diameter measuring equipment to measure the copper wire at a single point. However, copper wire itself has a small diameter and is relatively soft. During the inspection process, the inspection results are easily affected by the angle of placement, the pressure, and the swing of the copper wire. Especially when inspecting thinner copper wires or tin-plated copper wires, if the inspection contact continuously presses on the surface of the copper wire, it can easily cause local indentations or damage to the plating.

[0003] In addition, during the drawing, tinning, winding or transportation of copper wire, there may be slight elliptical, indented or inconsistent circumferential dimensions in some local cross sections. If only a single measurement is performed on the copper wire in the same direction, it is difficult to reflect the difference in wire diameter in different circumferential directions at the same detection position. Manually rotating the copper wire repeatedly or re-clamping it for detection can easily cause the detection position to shift, resulting in a lack of comparability between multiple detection data.

[0004] Therefore, it is necessary to provide a detection device that can stably limit the copper wire and perform multi-angle wire diameter verification at the same detection position. Summary of the Invention

[0005] The purpose of this application is to provide a diameter detection device to solve the problems of copper wire swinging easily, difficulty in adapting the contact measurement position to different wire diameter heights, and difficulty in reflecting circumferential wire diameter deviation in the existing copper wire diameter detection process.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] This application provides a diameter detection device, including a detection base with a detection channel for a copper wire to pass through. Two elastic limiting mechanisms are spaced apart along the extension direction of the detection channel on the detection base. A rotating measuring mechanism is disposed between the two elastic limiting mechanisms. The elastic limiting mechanisms are used to elastically limit the portions of the copper wire located on both sides of the rotating measuring mechanism. The rotating measuring mechanism includes a rotatable measuring ring, opposing measuring components disposed on the measuring ring, and a steering drive component for driving the measuring ring to rotate. The opposing measuring components include two measuring contact plates located on both sides of the detection channel and a mechanism for driving the two measuring contact plates to rotate. The measuring drive unit with opposing plates has two measuring contact plates, each with a contact surface extending in a direction perpendicular to the output direction of the corresponding measuring drive unit. This allows it to maintain contact with the outer periphery of the copper wire even when the contact position changes with the wire diameter or the limiting position. The measuring drive unit obtains the wire diameter in the current measuring direction based on the amount of movement of the two measuring contact plates when they contact the copper wire. The steering drive assembly drives the measuring ring to rotate, enabling the opposing measuring assembly to perform wire diameter verification in different directions at the same detection position of the copper wire. This stabilizes the copper wire detection segment through elastic limiting at both ends and adapts to the wire diameter detection requirements in different measuring directions through the rotatable opposing measuring assembly.

[0008] Furthermore, the elastic limiting mechanism includes two fixed supports and a movable pressure block located above the two fixed supports. The two fixed supports are spaced apart along the width direction of the detection channel. The movable pressure block can move up and down relative to the fixed supports so that the copper wire is restricted between the fixed supports and the movable pressure block. Thus, the shaking and deviation of the copper wire during the detection process is reduced by the cooperation of the lower double-point support and the upper elastic pressing.

[0009] Furthermore, the movable pressure block includes a horizontal plate and a semi-circular pressure block disposed at the bottom of the horizontal plate. The semi-circular pressure block is located above the space between two fixed supports. The semi-circular pressure block is used to elastically abut against the outer periphery of the copper wire when the movable pressure block moves downward. This reduces the risk of local pressure damage to the surface of the copper wire by adapting the arc-shaped contact surface to the outer periphery of the copper wire.

[0010] Furthermore, the elastic limiting mechanism also includes a guide, a return spring, and an opening and closing drive. The movable pressure block is movably mounted on the detection base through the guide. The return spring is used to drive the movable pressure block closer to the fixed support, and the opening and closing drive is used to drive the movable pressure block away from the fixed support to open the detection channel. This creates clearance space during wire loading and unloading, and forms an elastic limiting state during detection.

[0011] Furthermore, the opening and closing drive includes a through groove on the movable pressure block, a cam disposed in the through groove, and a rotating rod connected to the cam. The cam can abut against the inner wall of the through groove and lift the movable pressure block under the drive of the rotating rod. The cams in the two elastic limiting mechanisms are connected through the same rotating rod, thereby opening or releasing the movable pressure blocks at both ends synchronously through the same rotating rod, ensuring that the limiting states on both sides of the copper wire are consistent.

[0012] Furthermore, the measuring ring includes a fixed ring fixedly mounted on the detection base and a rotating ring rotatably mounted inside the fixed ring. The opposing measuring components are mounted on the rotating ring so that when the rotating ring rotates, it drives the two measuring contact plates to change the measuring direction relative to the copper wire, thereby achieving multi-directional wire diameter verification at the same detection position without re-clamping the copper wire.

[0013] Furthermore, the steering drive assembly includes a toothed block disposed on the outer periphery of the rotating ring, a gear meshing with the toothed block, and a motor for driving the gear to rotate. The motor is fixedly disposed on the detection base so as to drive the rotating ring to rotate relative to the fixed ring through the gear and the toothed block. Thus, the controllable switching of the measurement direction is realized through gear transmission, thereby improving the repeatability of multi-angle retesting.

[0014] Furthermore, the measurement drive unit is a linear drive structure with displacement feedback function. A buffer connector is provided between the measurement contact plate and the measurement drive unit. The buffer connector is used to absorb the remaining movement of the measurement drive unit after the measurement contact plate contacts the copper wire, thereby reducing excessive squeezing after the measurement contact plate contacts the copper wire and reducing the risk of surface damage to soft copper wire or tin-plated copper wire.

[0015] Furthermore, a conductive contact portion is provided on the side of the measuring contact plate near the copper wire, and a conductive reference portion is provided on the elastic limiting mechanism that contacts the copper wire. The conductive contact portion, the copper wire, and the conductive reference portion can form a contact detection circuit when the measuring contact plate contacts the copper wire, so as to stop the measuring drive unit from moving. Thus, the contact stop is achieved by utilizing the conductivity of the copper wire itself, improving the timeliness of contact stop and reducing the measuring contact force.

[0016] Furthermore, the rotating measuring mechanism also includes a control module. The control module is used to calculate the wire diameter of the copper wire in the current measuring direction based on the initial distance between the two measuring contact plates and the amount of movement of the two measuring drive units. It is also used to acquire the wire diameter data of the copper wire in different measuring directions after the measuring ring rotates, so as to determine the circumferential wire diameter deviation of the copper wire, thereby realizing multi-directional data acquisition and roundness verification at the same detection position.

[0017] The technical solution provided in this application has the following advantages compared with the prior art:

[0018] 1. This application uses two elastic limiting mechanisms to limit the copper wire located on both sides of the rotating measuring mechanism, so that the middle position to be measured forms a relatively stable detection section, reducing the influence of swaying, sagging or deflection of the copper wire during detection on the wire diameter detection results. At the same time, two measuring contact plates with contact surfaces extending perpendicular to the output direction of the corresponding measuring drive unit move from both sides of the detection channel to contact the outer periphery of the copper wire, so that the measuring contact plates can cover the height variation range corresponding to different wire diameters of copper wires. It does not require that the output axis of the measuring drive unit be at the same height as the copper wire axis, thus improving the adaptability when detecting copper wires of different specifications.

[0019] 2. This application uses a steering drive assembly to rotate the measuring ring, enabling the opposing measuring assembly to change its measuring direction around the same copper wire detection position. This allows for the acquisition of wire diameter data at the same detection position in different circumferential directions, facilitating the determination of whether the copper wire has issues such as ellipticity, local indentation, or localized thickening of the plating. Simultaneously, a contact detection circuit is formed by the conductive contact part, the copper wire, and the conductive reference part, allowing the measuring contact plate to trigger the measuring drive part to stop moving as soon as it contacts the copper wire. Compared to relying solely on pressure thresholds or manual judgment of the contact state, this reduces the risk of crush damage to soft copper wires. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the detection device in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the detection channel in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the internal structure of the detection base in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the elastic limiting mechanism and the rotary measuring mechanism in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the movable pressure block in an embodiment of this application;

[0026] Figure 6 This is a cross-sectional view of the movable pressure block in an embodiment of this application;

[0027] Figure 7 for Figure 4 Enlarged view of the structure of section A;

[0028] Figure 8 This is a schematic diagram of the measuring ring structure in an embodiment of this application;

[0029] Figure 9 This is a schematic diagram of the structure of the fixed ring and the rotating ring in the embodiments of this application.

[0030] Explanation of icon numbers:

[0031] 1. Testing base; 11. Testing channel;

[0032] 2. Elastic limiting mechanism; 21. Fixed support; 22. Moving pressure block; 221. Horizontal plate; 222. Semi-circular pressure block; 23. Guide component; 25. Return spring; 26. Opening and closing drive component; 261. Through groove; 262. Cam; 263. Rotating rod;

[0033] 3. Rotary measuring mechanism; 31. Measuring ring; 311. Fixed ring; 312. Rotating ring; 32. Opposing measuring assembly; 321. Measuring drive unit; 322. Measuring contact plate; 323. Contact surface; 324. Buffer connector; 33. Steering drive assembly; 331. Tooth block; 332. Gear; 333. Motor; 34. Control module; 35. Conductive contact part; 36. Conductive reference part. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] The present application will be further described below with reference to embodiments.

[0036] Example 1

[0037] Reference Figure 1 - Figure 6This first embodiment of the present application provides a diameter detection device, including a detection base 1. A detection channel 11 is formed on the detection base 1 for a copper wire to pass through along the axial direction. Two elastic limiting mechanisms 2 are arranged at intervals along the extension direction of the detection channel 11 on the detection base 1. A rotating measuring mechanism 3 is arranged between the two elastic limiting mechanisms 2. The two elastic limiting mechanisms 2 are respectively used to elastically limit the copper wire at the parts located on both sides of the rotating measuring mechanism 3, so that the copper wire forms a relatively stable detection segment at the rotating measuring mechanism 3. The rotating measuring mechanism 3 is used to detect the wire diameter and perform multi-angle verification at the same axial position of the detection segment.

[0038] In this embodiment, the elastic limiting mechanism 2 includes two fixed supports 21 and a movable pressure block 22 located above the two fixed supports 21. The two fixed supports 21 are fixedly mounted on the detection base 1 and located below the detection channel 11. The two fixed supports 21 are spaced apart along the width direction of the detection channel 11. The movable pressure block 22 is movably mounted above the two fixed supports 21. The movable pressure block 22 includes a horizontal plate 221 and a semi-circular pressure block 222 integrally mounted at the bottom center of the horizontal plate 221. The semi-circular pressure block 222 is located above the two fixed supports 21. When the copper wire is threaded through, it is located between the two fixed supports 21 and the semi-circular pressure block 222. The arc-shaped surface of the semi-circular pressure block 222 is used to elastically abut against the outer periphery of the copper wire, so that the copper wire is restricted within the limiting space formed by the two fixed supports 21 and the semi-circular pressure block 222 during the detection process.

[0039] In this embodiment, the upper ends of the two fixed supports 21 can be set as arc-shaped support surfaces or V-shaped support surfaces, so that the two fixed supports 21 can form two-point support on the lower side of the copper wire and limit the lateral displacement of the copper wire. The semi-circular pressure block 222 is located above the two fixed supports 21, so that after the semi-circular pressure block 222 moves down, it can form a three-point limiting relationship with the two fixed supports 21, thereby reducing the swing, deflection and drooping of the copper wire during the contact process of the measuring contact plate 322.

[0040] In this embodiment, the elastic limiting mechanism 2 further includes a guide 23, a reset spring 25, and an opening and closing drive 26. The movable pressure block 22 is movably mounted on the detection base 1 via the guide 23. The guide 23 is used to limit the movement direction of the movable pressure block 22, so that the movable pressure block 22 can move up and down relative to the two fixed supports 21. The reset spring 25 is disposed between the movable pressure block 22 and the guide 23. The reset spring 25 is used to drive the movable pressure block 22 closer to the fixed support 21, so that the semi-circular pressure block 222 has a tendency to elastically abut against the outer periphery of the copper wire. The opening and closing drive 26 is used to drive the movable pressure block 22 away from the fixed support 21, so as to open the detection channel 11 and facilitate the copper wire to be inserted or removed.

[0041] In this embodiment, the opening and closing drive component 26 includes a through groove 261 formed on the movable pressure block 22, a cam 262 disposed in the through groove 261, and a rotating rod 263 connected to the cam 262. The through groove 261 is preferably a circular through groove. The cams 262 in the two elastic limiting mechanisms 2 are connected by the same rotating rod 263. The rotating rod 263 extends along the side or top of the detection base 1 and maintains a clearance distance with the rotating measuring mechanism 3, so that the rotating rod 263 does not affect the rotation and measurement action of the rotating measuring mechanism 3 when it drives the two cams 262 to rotate synchronously. The cam 262 can abut against the inner wall of the through groove 261 and lift the movable pressure block 22 under the drive of the rotating rod 263, so that the movable pressure block 22 drives the semi-circular pressure block 222 away from the fixed support 21.

[0042] In this embodiment, in the initial wire-installation state, the rotating rod 263 drives the cam 262 to the top support position. The cam 262 abuts against the inner wall of the through groove 261 and pushes the horizontal plate 221 upward, so that a gap is formed between the semi-circular pressure block 222 and the two fixed supports 21 for the copper wire to enter. At this time, the reset spring 25 is in the stored state, and the copper wire can pass through one end of the detection channel 11 and pass through an elastic limiting mechanism 2, a rotating measuring mechanism 3 and another elastic limiting mechanism 2 in sequence.

[0043] In this embodiment, after the copper wire is threaded into place, the operator turns the rotating rod 263. The rotating rod 263 synchronously drives the two cams 262 to rotate, so that the cams 262 gradually release the support on the inner wall of the through groove 261. The two horizontal plates 221 move down under the action of the corresponding return springs 25. The two semi-circular pressure blocks 222 move closer to the copper wire and elastically abut against the outer periphery of the copper wire. The two elastic limiting mechanisms 2 thereby limit the copper wire at the two sides of the rotating measuring mechanism 3, reducing the swing, deflection and drooping of the copper wire at the middle detection position.

[0044] In this embodiment, the rotating measuring mechanism 3 includes a measuring ring 31, a counter-measuring component 32, a steering drive component 33, and a control module 34. The measuring ring 31 includes a fixed ring 311 and a rotating ring 312. The fixed ring 311 is fixedly mounted on the detection base 1 and located between two elastic limiting mechanisms 2. The rotating ring 312 is rotatably mounted inside the fixed ring 311 in a bearing fit, rolling fit, or sliding fit manner. The counter-measuring component 32 is mounted on the rotating ring 312. The rotating ring 312 can drive the counter-measuring component 32 to rotate around the detection channel 11 to change the measurement direction of the counter-measuring component 32 relative to the copper wire.

[0045] In this embodiment, the opposing measurement component 32 includes two sets of opposing measurement drive units 321 and two measurement contact plates 322 respectively disposed at the output ends of the two sets of measurement drive units 321. The two sets of measurement drive units 321 are arranged opposite each other along the radial direction of the measurement ring 31. The two measurement contact plates 322 are respectively located on both sides of the detection channel 11. The contact surfaces 323 of the two measurement contact plates 322 are parallel to each other. The two sets of measurement drive units 321 are used to drive the two measurement contact plates 322 to move towards each other. The side of the two measurement contact plates 322 closest to the copper wire has a contact surface 323. The contact surface 323 extends in a direction perpendicular to the output direction of the measurement drive unit 321, so that after the measurement ring 31 drives the measurement contact plates 322 to rotate to different measurement directions, the contact surface 323 can still cover the range of contact position changes of the outer periphery of the copper wire in that measurement direction.

[0046] In this embodiment, the measurement drive unit 321 can be an electric push rod with displacement feedback, a lead screw slide, or a micro linear module. When the two measurement contact plates 322 are in the initial open position, there is an initial calibration distance between the two contact surfaces 323. During detection, the two sets of measurement drive units 321 drive the corresponding measurement contact plates 322 to move toward the copper wire. When the two measurement contact plates 322 abut against the outer periphery of the copper wire, the two sets of measurement drive units 321 stop moving. The control module 34 calculates the wire diameter of the copper wire in the current measurement direction based on the initial calibration distance between the two contact surfaces 323 and the amount of movement of the two sets of measurement drive units 321.

[0047] In this embodiment, the control module 34 records the distance between the two contact surfaces 323 when they are in the initial open position as the initial calibration distance L0, records the amount of movement of the left measuring contact plate 322 from the initial open position to the contact copper wire as XL, records the amount of movement of the right measuring contact plate 322 from the initial open position to the contact copper wire as XR, and records the uncompensated wire diameter value as D0, where D0 = L0 - XL - XR.

[0048] When using a standard wire gauge for calibration, the control module 34 reads the known wire diameter Ds of the standard wire gauge and records the corresponding left-side movement XLs and right-side movement XRs during the standard wire gauge inspection. It then calculates the calibration compensation C = Ds - (L0 - XLs - XRs). When inspecting the copper wire to be tested, the control module 34 calculates the wire diameter D = L0 - XL - XR + C in the current measurement direction.

[0049] Therefore, the initial calibration spacing, the amount of movement on both sides, and the calibration compensation are all included in the wire diameter calculation, and the resulting wire diameter D is used for comparison of wire diameter data in different measurement directions.

[0050] In this embodiment, the displacement feedback of the measuring drive unit 321 can correspond to the actual moving position of the measuring touch plate 322, or to the actual moving position of the sliding component supporting the measuring touch plate 322, so that the control module 34 can obtain the actual moving amount of the two measuring touch plates 322 relative to the initial opening position. When a buffer connector 324 is provided between the measuring touch plate 322 and the measuring drive unit 321, the control module 34 can compensate for the small deformation of the buffer connector 324 by standard wire gauge calibration, so as to avoid uncontrollable errors between the output stroke of the measuring drive unit 321 and the actual contact position of the measuring touch plate 322.

[0051] In this embodiment, a buffer connector 324 is provided between each of the two measuring contact plates 322 and the corresponding measuring drive unit 321. The buffer connector 324 can be a miniature compression spring, an elastic sheet, or a flexible connecting block. When the measuring contact plate 322 contacts the outer periphery of the copper wire, the buffer connector 324 is used to absorb the remaining movement of the measuring drive unit 321, so that the measuring contact plate 322 and the copper wire form a light contact state, reducing the risk of the copper wire surface being hard squeezed.

[0052] In this embodiment, the steering drive assembly 33 includes a toothed block 331, a gear 332, and a motor 333. The toothed block 331 is fixedly disposed on the outer periphery of the rotating ring 312. The toothed block 331 can be an arc-shaped toothed block or an annular toothed block. The gear 332 is fixedly disposed on the output end of the motor 333 and meshes with the toothed block 331. The motor 333 is fixedly disposed on the detection base 1. The fixed ring 311 reserves a meshing space at the meshing position of the gear 332 and the toothed block 331, so that the gear 332 can mesh with the toothed block 331 on the outer periphery of the rotating ring 312 and drive the rotating ring 312 to rotate. When the motor 333 drives the gear 332 to rotate, the gear 332 drives the rotating ring 312 to rotate relative to the fixed ring 311 through the toothed block 331, so that the two measuring contact plates 322 change the measuring direction around the copper wire.

[0053] In this embodiment, when the measurement drive unit 321, the measurement contact plate 322, and the conductive contact part 35 rotate synchronously with the rotating ring 312, the corresponding connecting cables can be arranged along the reserved wiring path of the rotating ring 312, or a flexible cable arrangement method that can adapt to the small-angle reciprocating rotation of the rotating ring 312 can be adopted, so that the rotating ring 312 will not pull the connecting cables during multi-angle verification. When the rotating ring 312 needs to rotate at a larger angle or continuous angle, the power supply and signal transmission of the measurement drive unit 321 and the conductive contact part 35 can also be realized by the rotary electrical connection method.

[0054] In this embodiment, after the first direction wire diameter detection is completed, the two sets of measurement drive units 321 first drive the two measurement contact plates 322 to reset to the initial open position. After the control module 34 confirms that both measurement contact plates 322 have returned to the initial open position, it controls the motor 333 to drive the rotating ring 312 to rotate by a preset angle through the gear 332 and the tooth block 331. The preset angle is the rotation angle between two adjacent measurement directions that are pre-stored in the control module 34. The preset angle is determined according to the number N of the verification directions required for the same detection position. When N is 12, the preset angle is 15°, when N is 6, the preset angle is 30°, and when N is 4, the preset angle is 45°.

[0055] After the control module 34 completes the wire diameter calculation in the current measurement direction and confirms that the two measuring contact plates 322 have returned to their initial open positions, it reads the preset angle and controls the motor 333 to drive the rotating ring 312 to rotate by the corresponding angle.

[0056] The rotating ring 312 drives the two sets of measuring drive units 321 and the two measuring contact plates 322 to synchronously change the position relative to the copper wire. Then, the two sets of measuring drive units 321 drive the two measuring contact plates 322 to move towards each other and complete the wire diameter detection in the second direction. By repeating the above process, wire diameter data in multiple circumferential directions at the same detection position can be obtained.

[0057] In this embodiment, after all tests are completed, the control module 34 controls the two measuring contact plates 322 to return to their initial open positions, and controls the rotating ring 312 to reset to its initial angle under the drive of the motor 333. The operator then reverses the rotation rod 263, which drives the two cams 262 to support the inner wall of the corresponding through groove 261 again, causing the two horizontal plates 221 to be lifted upwards. The reset spring 25 is compressed, and the semi-circular pressure block 222 leaves the outer periphery of the copper wire. The detection channel 11 reopens, and the operator can then pull the copper wire out of the detection channel 11, thereby completing a copper conductor wire diameter verification test.

[0058] Example 2

[0059] Reference Figure 6 - Figure 9 This is the second embodiment of the present application, which provides a conductive contact-based copper conductor wire diameter verification method. Based on the first embodiment, it further defines the contact-based structure of the measuring contact plate 322. A conductive contact part 35 is provided on the side of the measuring contact plate 322 near the copper wire. A conductive reference part 36 that contacts the copper wire is provided on the elastic limiting mechanism 2. The conductive reference part 36 can be provided on the support surface of one of the fixed supports 21. The conductive reference part 36 is kept insulated from the detection base 1. The conductive reference part 36 is connected to the common terminal of the control module 34 through a wire. The conductive contact part 35 is connected to the detection terminal of the control module 34 through a wire.

[0060] In this embodiment, after the copper wire is threaded through the detection channel 11, two elastic limiting mechanisms 2 keep the copper wire in contact with the conductive reference part 36. The conductive reference part 36, the copper wire, and the conductive contact part 35 constitute the components of the contact detection circuit. When any measuring contact plate 322 moves toward the copper wire and the conductive contact part 35 contacts the copper wire, the conductive contact part 35, the copper wire, and the conductive reference part 36 on that side are connected. After receiving the contact signal on that side, the control module 34 controls the corresponding measuring drive part 321 to stop moving and records the amount of movement of the measuring contact plate 322 on that side.

[0061] In this embodiment, the two measuring drive units 321 can be started simultaneously and stopped independently. When the left measuring contact plate 322 contacts the copper wire first, the left conductive contact 35 first forms a conduction signal. The control module 34 first stops the left measuring drive unit 321 and records the left movement amount. When the right measuring contact plate 322 contacts the copper wire later, the right conductive contact 35 forms a conduction signal. The control module 34 stops the right measuring drive unit 321 and records the right movement amount. Therefore, even if the copper wire is slightly eccentric relative to the detection channel 11 after being elastically limited at both ends, the two measuring contact plates 322 can stop when they contact the copper wire respectively, and the wire diameter in the current measuring direction can be obtained by the movement amount on both sides.

[0062] In this embodiment, the control module 34 can obtain the wire diameter of the copper wire in the current measurement direction by subtracting the movement amount of the left measuring contact plate 322 and the movement amount of the right measuring contact plate 322 from the initial distance between the two measuring contact plates 322. Before actual use, it can be calibrated by a standard wire gauge or a standard round bar. The standard wire gauge is placed into the detection channel 11 and a contact detection is completed. The control module 34 records the correspondence between the displacement values ​​of the two measuring contact plates 322 and the wire diameter of the standard wire gauge to correct the errors caused by the thickness of the contact surface 323 of the measuring contact plate 322, the micro deformation of the buffer connector 324, and the assembly gap.

[0063] In this embodiment, after the first direction detection is completed, the control module 34 controls the two measuring drive units 321 to drive the two measuring contact plates 322 to reset. After the control module 34 confirms that the two measuring contact plates 322 have returned to the initial open position, it controls the motor 333 to drive the rotating ring 312 to rotate by a preset angle. After the rotating ring 312 drives the two measuring contact plates 322 to change the measurement direction, the control module 34 controls the two measuring drive units 321 to perform conductive contact judgment and stop detection again. The control module 34 forms a circumferential wire diameter data group from the wire diameter values ​​corresponding to multiple measurement directions, selects the maximum wire diameter Dmax and the minimum wire diameter Dmin from the circumferential wire diameter data group, and calculates the circumferential wire diameter difference ΔD=Dmax-Dmin.

[0064] The control module 34 reads the preset circumferential deviation threshold ΔDth corresponding to the specification of the copper wire to be tested. The preset circumferential deviation threshold ΔDth is determined by the allowable roundness deviation in the product standard or factory inspection rules of the copper wire to be tested. When ΔD is greater than ΔDth, the control module 34 outputs a result indicating that the circumferential wire diameter deviation is unqualified; when ΔD is not greater than ΔDth, the control module 34 outputs a result indicating that the circumferential wire diameter deviation is qualified.

[0065] The control module 34 determines whether the measuring touch plate 322 has returned to the initial open position based on the displacement feedback value of the measuring drive unit 321. When the displacement feedback values ​​of the left measuring drive unit 321 and the right measuring drive unit 321 both return to the corresponding initial displacement value, or both trigger their respective initial position limit signals, the control module 34 determines that both measuring touch plates 322 have returned to the initial open position and allows the rotating ring 312 to perform the turning action.

[0066] The working principle of this application is as follows:

[0067] Before testing, the two measuring contact plates 322 are in the initial open position, and an initial calibration distance is formed between the contact surfaces 323 of the two measuring contact plates 322. The control module 34 can calibrate this initial calibration distance using a standard wire gauge or a standard round bar. During calibration, a standard wire gauge with a known wire diameter is inserted into the testing channel 11, so that the two measuring contact plates 322 contact the standard wire gauge according to the testing action. The control module 34 records the displacement feedback values ​​corresponding to the two measuring drive units 321 and establishes a correspondence between the displacement feedback values ​​and the wire diameter of the standard wire gauge to compensate for the influence of the assembly gap of the measuring contact plates 322, the slight deformation of the buffer connector 324, and the processing error of the contact surface 323 on the wire diameter calculation. This ensures that the control module 34 can calculate the copper wire diameter based on the actual movement of the two measuring contact plates 322 during subsequent testing.

[0068] During testing, the operator first rotates the rotating rod 263, which drives the two cams 262 to rotate synchronously. The cams 262 push and move the pressure block 22 within the through groove 261, causing the moving pressure block 22 to move the semi-circular pressure block 222 away from the fixed support 21. The testing channel 11 is in the open state, allowing the copper wire to pass through the testing channel 11 and sequentially through the first elastic limiting mechanism 2, the rotating measuring mechanism 3, and the second elastic limiting mechanism 2. After the copper wire has passed through, the operator rotates the rotating rod 263 in the opposite direction, causing the cams 262 to rotate synchronously. 2. Release the top support on the inner wall of the through groove 261. The moving pressure block 22 moves towards the fixed support 21 under the action of the return spring 25. The semi-circular pressure block 222 cooperates with the two fixed supports 21, so that the copper wire is located between the fixed support 21 and the semi-circular pressure block 222. Thus, the two elastic limiting mechanisms 2 respectively elastically limit the position of the copper wire on both sides of the rotating measuring mechanism 3, so that the copper wire segment corresponding to the middle of the rotating measuring mechanism 3 remains relatively stable, reducing the swing, deflection and drooping of the copper wire during the contact process of the measuring contact plate 322.

[0069] After the two elastic limiting mechanisms 2 complete the limiting, the control module 34 controls the two sets of measuring drive units 321 to start. The two sets of measuring drive units 321 respectively drive the two measuring contact plates 322 to move from both sides of the detection channel 11 toward the copper wire. Since the contact surface 323 of the two measuring contact plates 322 extends in a direction perpendicular to the output direction of the measuring drive unit 321, even if the center height of copper wires of different diameters is different after being limited by the elastic limiting mechanism 2, the outer periphery of the copper wire can still fall into the effective coverage area of ​​the contact surface 323. The measuring drive unit 321 does not need to be strictly at the same height as the copper wire axis to make the measuring contact plate 322 contact the outer periphery of the copper wire through the contact surface 323.

[0070] As the measuring contact plate 322 gradually approaches the copper wire, the two measuring drive units 321 can start synchronously and stop independently. When one of the measuring contact plates 322 contacts the copper wire first, the conductive contact part 35, the copper wire, and the conductive reference part 36 on that side form a contact detection circuit. After receiving the contact signal on that side, the control module 34 immediately controls the corresponding measuring drive unit 321 to stop and records the amount of movement of the measuring contact plate 322 on that side. The measuring drive unit 321 on the other side continues to drive the corresponding measuring contact plate 322 to move until the measuring contact plate 322 on the other side contacts the copper wire and forms a contact detection signal, and then stops. Thus, even if there is a slight eccentricity between the two elastic limiting mechanisms 2, the two measuring contact plates 322 can stop when they contact the outer periphery of the copper wire, avoiding measurement errors caused by requiring the copper wire to be at the theoretical center.

[0071] When calculating the wire diameter, the control module 34 uses the distance between the contact surfaces 323 of the two measuring contact plates 322 when they are in the initial open position as the initial calibration distance, and subtracts the actual movement of the two measuring contact plates 322 from the initial calibration distance to obtain the wire diameter value of the copper wire in the current measurement direction. When the displacement feedback of the measuring drive unit 321 directly corresponds to the actual position of the measuring contact plate 322, the control module 34 directly uses the actual movement of the measuring contact plate 322 in the calculation. When a buffer connector 324 is provided between the measuring drive unit 321 and the measuring contact plate 322, the control module 34 compensates for the small deformation of the buffer connector 324 according to the standard wire gauge calibration result, so that the calculation result corresponds to the distance when the two contact surfaces 323 actually contact the outer periphery of the copper wire, rather than simply corresponding to the output stroke of the measuring drive unit 321.

[0072] After obtaining the wire diameter value in the current measurement direction, the control module 34 first controls the two measurement drive units 321 to drive the two measurement contact plates 322 back to the initial open position. After confirming that both measurement contact plates 322 have exited the outer peripheral contact area of ​​the copper wire, the control module 333 starts the motor. The motor 333 drives the rotating ring 312 to rotate relative to the fixed ring 311 by a preset angle through the gear 332 and the tooth block 331. When the rotating ring 312 rotates, the two sets of measurement drive units 321 and the two measurement contact plates 322 change their circumferential positions relative to the copper wire synchronously with the rotating ring 312. Since the two measurement contact plates 322 have returned to the initial open position, the measurement contact plates 322 will not scrape the copper wire or interfere with the movement of the copper wire during the rotation of the rotating ring 312.

[0073] After the rotating ring 312 rotates to the preset angle, the control module 34 controls the two sets of measuring drive units 321 to drive the two measuring contact plates 322 to move towards each other. The two measuring contact plates 322 contact the outer periphery of the copper wire again according to the aforementioned conductive contact stop method. The control module 34 calculates the wire diameter value in the second measuring direction based on the amount of movement of the two measuring contact plates 322. After repeating the above reset, turning and measuring process, the control module 34 can obtain the wire diameter value of the same axial detection position of the copper wire in multiple circumferential directions, and further calculate the maximum wire diameter, minimum wire diameter and circumferential wire diameter difference to determine whether the copper wire has problems such as ellipticity, local indentation, local thickening of the plating layer or inconsistent circumferential dimensions.

[0074] After all tests are completed, the control module 34 controls the two measuring contact plates 322 to return to their initial open positions and controls the rotating ring 312 to reset to its initial angle. The operator then rotates the rotating rod 263, causing the rotating rod 263 to drive the two cams 262 to synchronously support the inner wall of the corresponding through groove 261. The two moving pressure blocks 22 are lifted and drive the semi-circular pressure block 222 away from the outer periphery of the copper wire. The two elastic limit mechanisms 2 release the elastic limit on the copper wire, and the detection channel 11 reopens. The operator can then pull the copper wire out of the detection channel 11, completing one adaptive intelligent detection process for the copper conductor wire diameter.

[0075] In the above working principle, the two elastic limiting mechanisms 2 are only used to stabilize the copper wire detection section and do not participate in the wire diameter calculation. The rotating measuring mechanism 3 performs opposing contact measurement of the copper wire through two measuring contact plates 322, which can avoid the change of contact position of the fixed support 21 and the semi-circular pressure block 222 in the elastic limiting mechanism 2 from affecting the wire diameter reading. The conductive contact part 35 uses the conductivity of the copper wire itself to realize contact stop, and can stop the measuring drive part 321 when the measuring contact plate 322 just contacts the copper wire. The buffer connector 324 is used to absorb the small residual stroke after contact. The rotating ring 312 changes the measurement direction after the measuring contact plate 322 retracts, thereby realizing multi-directional verification detection of the same detection position, while reducing the risk of pinching and scratching of the copper wire during the detection process.

[0076] As can be seen from Embodiments 1 and 2, the diameter detection device provided in this application uses two elastic limiting mechanisms 2 to elastically limit both sides of the copper wire detection section, uses two measuring contact plates 322 in the rotating measuring mechanism 3 to measure the copper wire in opposite directions, and uses a rotating ring 312 to change the measurement direction to complete multi-angle verification.

[0077] Based on the above structure and testing process, this application can achieve the following technical effects:

[0078] The contact surface 323 of the measuring contact plate 322 extends in a direction perpendicular to the output direction of the measuring drive unit 321, which can adapt to the contact position changes of copper wires of different diameters in different measuring directions. The two elastic limiting mechanisms 2 can reduce the situation where the copper wire is pushed off course when the measuring contact plate 322 contacts the copper wire. The conductive contact part 35 can trigger the measuring drive unit 321 to stop when it just contacts the copper wire. The rotating ring 312 changes the measuring direction after the two measuring contact plates 322 retract, which can prevent the measuring contact plate 322 from rotating and scraping the copper wire. This application can improve the stability and multi-angle verification capability of copper conductor wire diameter detection, and reduce the risk of pinching of soft copper wires during the detection process.

[0079] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this application.

Claims

1. A diameter detection device, comprising a detection base (1), wherein a detection channel (11) for passing copper wires is formed on the detection base (1), characterized in that: Two elastic limiting mechanisms (2) are spaced apart along the extension direction of the detection channel (11) on the detection base (1). A rotating measuring mechanism (3) is provided between the two elastic limiting mechanisms (2). The elastic limiting mechanisms (2) are used to elastically limit the copper wire located on both sides of the rotating measuring mechanism (3). The rotating measuring mechanism (3) includes a rotatable measuring ring (31), a counter-measuring component (32) provided on the measuring ring (31), and a steering drive component (33) for driving the measuring ring (31) to rotate. The counter-measuring component (32) includes two measuring contact plates (322) located on both sides of the detection channel (11). The rotating measuring mechanism (3) also includes a control module (34), and two measuring drive units (321) for driving the two measuring contact plates (322) to move in opposite directions. The two measuring drive units (321) are respectively used to output the amount of movement when the corresponding measuring contact plate (322) contacts the copper wire. The control module (34) is used to obtain the wire diameter in the current measuring direction based on the initial distance between the two measuring contact plates (322) and the amount of movement output by the two measuring drive units (321). The steering drive component (33) is used to drive the measuring ring (31) to rotate so that the opposing measuring component (32) can perform wire diameter verification in different directions at the same detection position of the copper wire.

2. The diameter detection device according to claim 1, characterized in that: The elastic limiting mechanism (2) includes two fixed supports (21) and a movable pressure block (22) located above the two fixed supports (21). The two fixed supports (21) are spaced apart along the width direction of the detection channel (11). The movable pressure block (22) can move up and down relative to the fixed supports (21) so that the copper wire is restricted between the fixed supports (21) and the movable pressure block (22).

3. The diameter detection device according to claim 2, characterized in that: The movable pressure block (22) includes a horizontal plate (221) and a semi-circular pressure block (222) disposed at the bottom of the horizontal plate (221). The semi-circular pressure block (222) is located above the two fixed supports (21) and is used to elastically abut against the outer periphery of the copper wire when the movable pressure block (22) moves down.

4. The diameter detection device according to claim 2, characterized in that: The elastic limiting mechanism (2) also includes a guide (23), a reset spring (25) and an opening and closing drive (26). The movable pressure block (22) is movably mounted on the detection base (1) through the guide (23). The reset spring (25) is used to drive the movable pressure block (22) closer to the fixed support (21). The opening and closing drive (26) is used to drive the movable pressure block (22) away from the fixed support (21) to open the detection channel (11).

5. The diameter detection device according to claim 4, characterized in that: The opening and closing drive component (26) includes a through groove (261) opened on the movable pressure block (22), a cam (262) disposed in the through groove (261), and a rotating rod (263) connected to the cam (262). The cam (262) can abut against the inner wall of the through groove (261) and lift the movable pressure block (22) under the drive of the rotating rod (263). The cams (262) in the two elastic limiting mechanisms (2) are connected through the same rotating rod (263).

6. The diameter detection device according to claim 1, characterized in that: The measuring ring (31) includes a fixed ring (311) fixedly mounted on the detection base (1) and a rotating ring (312) rotatably mounted inside the fixed ring (311). The opposing measuring component (32) is mounted on the rotating ring (312) so that when the rotating ring (312) rotates, it drives the two measuring contact plates (322) to change the measuring direction relative to the copper wire.

7. A diameter detection device according to claim 6, characterized in that: The steering drive assembly (33) includes a toothed block (331) disposed on the outer periphery of the rotating ring (312), a gear (332) meshing with the toothed block (331), and a motor (333) for driving the gear (332) to rotate. The motor (333) is fixedly disposed on the detection base (1) so as to drive the rotating ring (312) to rotate relative to the fixed ring (311) through the gear (332) and the toothed block (331).

8. A diameter detection device according to claim 1, characterized in that: The measuring drive unit (321) is a linear drive structure with displacement feedback function. A buffer connector (324) is provided between the measuring contact plate (322) and the measuring drive unit (321). The buffer connector (324) is used to absorb the remaining movement of the measuring drive unit (321) after the measuring contact plate (322) contacts the copper wire.

9. A diameter detection device according to claim 8, characterized in that: The two measuring contact plates (322) are respectively provided with conductive contact parts (35) on the side near the copper wire. At least one of the fixed supports (21) is provided with a conductive reference part (36) that contacts the copper wire. The conductive reference part (36) is insulated from the detection base (1). The conductive reference part (36) is connected to the common terminal of the control module (34). The two conductive contact parts (35) are respectively connected to the detection terminal of the control module (34) so ​​as to form a contact detection circuit on the corresponding side when any conductive contact part (35) contacts the copper wire, and to make the control module (34) control the corresponding side measuring drive part (321) to stop moving.

10. A diameter detection device according to claim 1, characterized in that: The control module (34) is used to acquire multiple wire diameter values ​​of copper wire in different measurement directions after the measuring ring (31) rotates, and to determine the maximum and minimum wire diameters from the multiple wire diameter values. The difference between the maximum and minimum wire diameters is used to obtain the circumferential wire diameter difference value, so as to determine the circumferential wire diameter deviation of the copper wire.

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