A copper and silk hot tinning device

Abstract

The present application belongs to copper wire processing technical field, specifically relates to a copper and silk hot tinning device, including the reel stand, annealing furnace, pickling tank, tin furnace and take-up machine arranged in sequence, further include: offline measurement device, for when the take-up reel is not installed, the cylindrical surface of the take-up reel is three-dimensional profile scanning, and the offline profile data associated with the unique identification of the take-up reel is generated, lifting trailer is used to carry the take-up reel, and the take-up reel can be transported from the offline measurement device to the take-up machine, and the take-up reel is installed on the take-up spindle of the take-up machine, online measurement device is arranged on the take-up machine, and the online measurement device includes angle encoder and laser displacement sensor. Through the method that the offline measurement is combined with the online calibration, the advantages that the complete three-dimensional profile can be obtained by the offline measurement are fully utilized, and the error caused by the installation eccentricity is eliminated by the online single-point measurement, so that the high-precision speed feedforward control is realized.

Description

Technical Field

[0001] This invention belongs to the field of copper wire processing technology, specifically relating to a copper wire hot-dip tin plating device. Background Technology

[0002] The annealing tin plating machine is a core piece of equipment in the copper wire processing field. The tension stability of its take-up stage directly affects the uniformity of the tin plating layer and the quality of the finished product. During the take-up process, the geometric accuracy and installation accuracy of the take-up reel are key factors affecting tension stability. However, in actual production, the take-up reel itself has manufacturing errors; at the same time, when the take-up reel is installed on the drive shaft, installation eccentricity is inevitable, meaning that the geometric center of the take-up reel does not coincide with the rotation center of the drive shaft. These errors together cause the actual radius of the take-up reel to fluctuate periodically with the angle during rotation, which in turn causes fluctuations in the take-up wire speed, ultimately manifesting as periodic changes in the take-up tension.

[0003] To address the aforementioned issues, several improvements have been proposed in the existing technology. For example, Chinese patent CN109929971B discloses a micro-wire annealing and tin plating machine production line, whose take-up machine employs a servo take-up device and a meter-counting guide wheel, enabling basic take-up control. Chinese patent CN112897213A discloses a multi-strand copper wire take-up machine, which prevents multi-strand wire overlap through a flat bottom guide wheel and uses a large-diameter take-up reel to reduce the frequency of reel changes. Chinese patent CN222138361U discloses a linear guide rail take-up structure for an annealing and tin plating machine, which uses a distance sensor to detect changes in the diameter of the take-up drum in real time and adjusts the take-up speed accordingly to maintain a relatively constant take-up speed.

[0004] However, the aforementioned existing technologies still have the following shortcomings: First, these solutions all adopt a passive feedback control method, that is, adjustment is only made after tension fluctuations occur, and they cannot actively eliminate periodic disturbances caused by geometric errors of the take-up reel and installation eccentricity. In particular, for high-frequency, small-amplitude fluctuations, the response lag effect of feedback control is obvious. Second, existing technologies lack the means to pre-measure and store the contour of the take-up reel itself, and cannot achieve precise compensation based on individual differences of the take-up reel. Third, the eccentricity state of the take-up reel after installation is not effectively detected and separated, so even if the roundness of the take-up reel itself is good, installation eccentricity will still introduce additional tension fluctuations. Fourth, when changing the take-up reel in traditional take-up devices, operators need to rely on experience to adjust the equipment parameters, and the tension fluctuations after the reel change are large, affecting production efficiency and product consistency. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide a copper wire hot-dip tinning device that can actively eliminate periodic fluctuations in take-up tension caused by geometric errors of the take-up reel itself and installation eccentricity.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A copper wire hot-dip tinning apparatus includes a wire feeding frame, an annealing furnace, an acid pickling tank, a tin furnace, and a wire take-up machine arranged sequentially; it also includes: An offline measurement device is used to perform a three-dimensional contour scan of the cylindrical surface of a take-up reel when the reel is not installed, and generate offline contour data associated with the unique identifier of the take-up reel. A lifting trailer is used to carry the take-up reel and to transport the take-up reel from the offline measuring device to the take-up machine, and to assist in installing the take-up reel onto the take-up spindle of the take-up machine; An online measuring device is installed on the take-up machine. The online measuring device includes an angle encoder and a laser displacement sensor. The real-time rotation angle of the take-up spindle is obtained through the angle encoder. The laser displacement sensor is installed on a bracket, and its laser beam is pointed to the cylindrical surface of the take-up reel after installation, for collecting radial displacement signals. The controller is electrically connected to the offline measuring device, the lifting trailer, the angle encoder, the laser displacement sensor, and the servo driver that drives the take-up spindle, respectively. The controller retrieves the corresponding offline contour data based on the unique identifier of the take-up reel transported by the lifting trailer, and uses the laser displacement sensor to perform online measurement after the take-up reel is installed. The online measurement data is compared with the offline contour data to separate the installation eccentricity component. Based on the eccentricity component, the offline contour data is corrected to generate the final radius data, and then a speed feedforward command table that varies with the rotation angle is generated and sent to the servo driver for feedforward speed compensation of the take-up spindle.

[0007] It also includes an axial movement mechanism connected to the bracket, used to drive the bracket and the laser displacement sensor on it to move along the axial direction of the take-up spindle to measure multiple preset positions; the axial movement mechanism is a linear guide module driven by a servo motor.

[0008] The offline measurement device is a three-dimensional contour sensor, which is used to scan the cylindrical surface of the take-up reel during rotation to generate the offline contour data.

[0009] The offline measuring device also includes a measuring turntable, which is used to support the take-up reel and drive it to rotate at a constant speed.

[0010] The lifting trailer includes a vehicle body, a traveling mechanism, and a lifting mechanism; both the traveling mechanism and the lifting mechanism are mounted on the vehicle body; the lifting mechanism includes a lifting frame and lifting rollers; the lifting frame is connected to the vehicle body via a lift, and two lifting rollers are provided, spaced apart; the two lifting rollers support the take-up reel.

[0011] The lifting mechanism has two parts; the lifting roller is an electric roller, which carries the take-up reel and drives it to rotate at a constant speed.

[0012] The lifting trailer is equipped with a barcode reader for reading the unique identifier on the take-up reel and sending the unique identifier to the controller; the offline measuring device binds and stores the unique identifier of the take-up reel with the data when generating offline contour data.

[0013] The bracket is mounted on the guide wheel moving mechanism of the take-up machine; the guide wheel moving mechanism drives the laser displacement sensor to move axially along the take-up main shaft.

[0014] The guide wheel moving mechanism includes a base, a slide table, and a guide wheel frame. The base is fixedly connected to the take-up machine. The slide table is slidably connected to the base. A drive screw is rotatably connected to the base, and a drive motor is connected to the drive screw. The slide table is threadedly connected to the drive screw. The guide wheel frame and the bracket are both fixedly connected to the slide table. A pair of guide wheels are rotatably connected to the guide wheel frame.

[0015] Compared with the prior art, the beneficial effects of this invention are: By combining offline measurement with online calibration, the method fully utilizes the advantage of obtaining a complete three-dimensional profile through offline measurement, while eliminating the error caused by installation eccentricity through online single-point (or multi-point) measurement, thereby achieving high-precision speed feedforward control.

[0016] The use of a lifting trailer facilitates the convenient and rapid transfer of the take-up reel between the offline measuring device and the production line. Simultaneously, the barcode reader automatically identifies the unique identifier of the take-up reel, ensuring accurate matching between offline data and the online-installed take-up reel. The entire system requires no large-scale mechanical modifications to existing take-up machines; simply adding a movable laser displacement sensor significantly improves the stability of take-up tension and reduces breakage and scrap rates.

[0017] By comparing the online measurement data with the contour data of the corresponding axial position in the offline contour data through the controller, the eccentric component introduced by the installation misalignment can be separated. Then, the offline contour data is corrected according to the eccentric component to generate the final radius data for velocity feedforward compensation, which effectively solves the problem of measurement data distortion caused by installation misalignment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of Example 1; Figure 2 This is a schematic diagram of the offline measurement device in Example 1; Figure 3 This is a structural diagram of the take-up machine in Example 1; Figure 4 yes Figure 3A magnified view of a section at point B in the middle; Figure 5 This is a structural schematic diagram of the lifting trailer in Example 2; Figure 6 This is a schematic diagram of the take-up device in Example 3; Figure 7 yes Figure 6 A magnified view of a section at point A in the middle; Wherein: 1 is the wire feeding frame, 2 is the annealing furnace, 3 is the pickling tank, 4 is the tin furnace, 5 is the take-up machine, 50 is the guide wheel moving mechanism, 500 is the base, 501 is the slide table, 502 is the guide wheel frame, 503 is the guide wheel, 51 is the take-up spindle, 6 is the offline measuring device, 60 is the three-dimensional contour sensor, 61 is the measuring turntable, 7 is the lifting trailer, 70 is the vehicle body, 71 is the walking mechanism, 72 is the lifting mechanism, 720 is the lifting frame, 721 is the lifting roller, 722 is the elevator, 8 is the take-up reel, 9 is the online measuring device, 90 is the laser displacement sensor, 91 is the bracket, and 10 is the axial moving mechanism. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1

[0021] like Figures 1 to 4 As shown, a copper wire hot-dip tin plating apparatus includes a wire feeding frame 1, an annealing furnace 2, an acid pickling tank 3, a tin furnace 4, and a wire take-up machine 5 arranged sequentially. The above is a common structural configuration of existing tin plating annealing production lines, and therefore will not be described in detail here. This apparatus, based on the existing structure, also includes: Offline measuring device 6, located in an independent measuring area next to the production line as needed, is used to perform a three-dimensional contour scan of the cylindrical surface of the empty take-up reel 8 before it is installed on the take-up machine 5, thereby obtaining three-dimensional shape data of the entire circumference and axial length of the take-up reel 8. This data is called "offline contour data" and is bound to a unique identifier (such as a QR code or RFID tag) affixed to each take-up reel 8 and stored in the controller's database.

[0022] The lifting trailer 7 can be a common AGV (Automated Guided Vehicle) trolley, which can both carry the take-up reel 8 and raise it to the same height as the take-up spindle 51 of the take-up machine 5 to assist in installing the take-up reel 8 onto the take-up spindle 51. The lifting trailer 7 is equipped with a barcode reader. When the operator places the take-up reel 8 onto the lifting trailer 7, the barcode reader automatically reads the unique identifier of the take-up reel 8 and sends this unique identifier to the controller.

[0023] This take-up machine 5 is a four-head take-up machine, which has four independently controlled take-up spindles 51 and guide wheel moving mechanisms 50. An online measuring device 9 is installed on the take-up machine 5, and includes an angle encoder and a laser displacement sensor 90. The angle encoder is connected to the take-up spindles 51 and can output the angular position of the take-up spindles 51 in real time. The laser displacement sensor 90 is mounted on a bracket 91, and its laser beam is pointed towards the cylindrical surface of the installed take-up reel 8 to collect radial displacement signals.

[0024] The controller typically employs a programmable logic controller (PLC) or an industrial computer, and is connected via an industrial Ethernet bus to the offline measuring device 6, the lifting trailer 7, the online measuring device 9, and the servo drive that drives the take-up spindle 51. Internally, the controller runs a complete software algorithm responsible for data storage, retrieval, comparison, correction, and speed command generation.

[0025] Specifically, the controller retrieves the corresponding offline contour data based on the unique identifier of the take-up reel 8 transported by the lifting trailer 7. After the take-up reel 8 is installed on the take-up spindle 51, the controller controls the take-up spindle 51 to rotate at a low speed for one revolution. The laser displacement sensor 90 collects the radial distance of the entire revolution under the installed state to obtain online measurement data. Since the online measurement data includes both the contour error of the take-up reel 8 itself and the radial fluctuation caused by the installation eccentricity, the controller compares the online measurement data with the offline contour data point by point according to the rotation angle and extracts the difference signal between the two. The component in this difference signal that changes periodically with each revolution of the take-up spindle 51 is the installation eccentricity component.

[0026] The controller uses the separated installation eccentricity component to correct the offline contour data, eliminates the radius fluctuation interference caused by installation eccentricity, and obtains the real radius data of the take-up reel 8 under actual installation state and continuously changes with the rotation angle. Then, based on the real radius data and the set take-up speed, it generates a speed feedforward instruction table that changes synchronously with the rotation angle and sends it to the servo driver for feedforward speed compensation of the take-up spindle 51.

[0027] Specifically, the offline measurement device 6 employs a three-dimensional profile sensor 60, which scans the cylindrical surface of the take-up reel 8 during rotation to generate offline profile data. The offline measurement device 6 also includes a measuring turntable 61, which supports the take-up reel 8 and drives it to rotate at a uniform speed.

[0028] The workflow of this device is mainly divided into three stages: offline measurement stage, online calibration stage, and production operation stage.

[0029] Offline Measurement Phase: The operator places a batch of newly arrived empty take-up reels 8 one by one into the offline measurement device 6. After starting the measurement program, the measuring turntable 61 rotates at a constant speed, while the three-dimensional profile sensor 60 moves from one end of the take-up reel 8 to the other, completely acquiring the actual radial dimensions at each position on the entire cylindrical surface. Since all axial positions and all circumferential angles are scanned, a complete three-dimensional profile model is obtained. The controller converts this three-dimensional profile model into a series of discrete data points, each containing three pieces of information: axial position, circumferential angle, and the actual radius at that position. To save storage space, a radius value is typically saved every one or two degrees, and a cross-section is saved every ten or twenty millimeters along the axial direction. This data is stored in the database using the unique identifier of the take-up reel 8 as an index. Simultaneously, the controller also calculates the overall roundness error and cylindricity error of the take-up reel 8 and stores these quality indicators in the database for reference when selecting calibration strategies later.

[0030] Online calibration phase: When a take-up station needs to change reels, the operator places the take-up reel 8, which has already undergone offline measurement, onto the lifting trailer 7. The barcode reader on the lifting trailer 7 automatically reads the unique identifier of the take-up reel 8 and sends it to the controller. Upon receiving the data, the controller retrieves the corresponding offline profile data for the take-up reel 8 from the database, preparing it for subsequent calibration.

[0031] The operator manipulates the lifting trailer 7 to transport the take-up reel 8 to the target take-up station (take-up spindle 51), raises the lifting trailer 7 so that the center hole of the take-up reel 8 is aligned with the center of the take-up spindle 51, and then moves the lifting trailer 7 axially along the take-up spindle 51 to move the take-up reel 8 to the take-up spindle 51. At this time, the operator locks the take-up reel 8 (for example, by hand tightening the lock nut).

[0032] The online calibration process then begins. The controller drives the take-up spindle 51 to rotate smoothly at a low speed. The laser displacement sensor 90 moves to the preset measurement position on the cylindrical surface of the take-up reel 8, and collects the radial distance signal of one revolution of the take-up reel 8 to obtain online measurement data.

[0033] The online measurement data includes both the contour changes of the take-up reel 8 itself and the radial fluctuations caused by the installation eccentricity. The controller compares the online measurement data with the offline contour data point by point according to the rotation angle and extracts the difference signal between the two. The component in the difference signal that changes periodically with each rotation of the take-up reel 8 is the installation eccentricity component.

[0034] The controller uses the separated installation eccentricity component to correct the offline contour data, eliminating the radius fluctuation interference caused by installation eccentricity, and obtaining the real radius data of the take-up reel 8 under actual installation conditions, which changes continuously with the rotation angle.

[0035] To further improve accuracy, an axial movement mechanism 10 is also included, connected to the bracket 91. This mechanism drives the laser displacement sensor 90 on the bracket 91 to move along the axial direction of the take-up spindle 51 to multiple preset measurement cross-section positions, repeating the above measurement and eccentricity separation steps. If the eccentricity components of each cross-section are basically consistent, it indicates that the eccentricity is mainly caused by misalignment during installation. If the eccentricity differences of each cross-section are large, it is determined that the take-up reel 8 has a cylindricity deviation, and the average value of the eccentricity components of multiple cross-sections is used to complete the contour data correction. The axial movement mechanism 10 is a linear guide module driven by a servo motor.

[0036] Production operation phase: After calibration, the controller generates a speed feedforward instruction table that changes synchronously with the rotation angle based on the actual radius data and the set take-up speed, and sends the instruction table to the servo driver.

[0037] During normal production, the take-up spindle 51 rotates at high speed. The servo driver uses the speed feedforward command table as the base speed setting and outputs the corresponding rotation speed in combination with the real-time angle signal to keep the take-up linear speed constant. At the same time, it works with conventional feedback adjustment to correct random disturbances, suppressing the periodic tension fluctuations caused by the contour error and installation eccentricity of the take-up reel 8 from the source, thus ensuring stable take-up tension.

[0038] Furthermore, the laser displacement sensor 90 of the online measurement unit can be selected as a one-dimensional laser displacement sensor 90. The angle encoder of the take-up spindle 51 adopts an incremental encoder.

[0039] Example 2

[0040] This embodiment provides a specific structure for the lifting trailer 7. The structure of the lifting trailer 7 can replace the measuring turntable 61 in the offline measuring device 6. The specific structure is as follows.

[0041] like Figure 5 As shown, the lifting trailer 7 includes a vehicle body 70, a traveling mechanism 71, and a lifting mechanism 72; both the traveling mechanism 71 and the lifting mechanism 72 are mounted on the vehicle body 70. Specifically, the traveling mechanism 71 can be a six-wheeled traveling mechanism 71 (Mecanum wheels).

[0042] The lifting mechanism 72 includes a lifting frame 720 and lifting rollers 721. The lifting frame 720 is connected to the vehicle body 70 via a lift 722, which allows the lifting frame 720 to move up and down relative to the vehicle body 70. Two lifting rollers 721 are provided, spaced apart, to support the take-up reel 8. The lift 722 can specifically be a scissor lift 722, a common type in the prior art.

[0043] In use, the measured take-up reel 8 is placed on the lifting roller 721, which supports the reel 8. Then, the traveling mechanism 71 moves the reel 8 to the take-up spindle 51, and the lifting mechanism 722 lifts the reel 8 so that it is coaxial with the take-up spindle 51. Next, the traveling mechanism 71 moves the entire assembly along the axial direction of the take-up spindle 51, allowing the reel 8 to enter the take-up spindle 51. Finally, the operator tightens the lock nut to secure it.

[0044] For the take-up reel 8 fully wound with copper wire, it can also be removed from the take-up spindle 51 by the lifting trailer 7. The removal method is the reverse of the loading method of the empty take-up reel 8, so it is briefly described here: First, move it to the bottom of the take-up reel 8 fully wound with copper wire, and then lift the lifting roller 721 with the lifting machine 722 to contact the take-up reel 8. Then the operator removes the lock nut; finally, the take-up reel 8 is moved in the opposite direction along the axial direction of the take-up spindle 51 by the traveling mechanism 71, and the take-up reel 8 is removed from the take-up spindle 51 and transferred to the place where it needs to be stored.

[0045] Furthermore, to improve work efficiency, the lifting mechanism 72 is provided with two rollers. One or both lifting rollers 721 are electric rollers, which carry the take-up reel 8 and drive it to rotate at a constant speed. That is, the lifting trailer 7 can be moved to the offline measuring device 6, and by placing the take-up reel 8 to be measured on the two lifting rollers 721, the lifting rollers 721 drive the take-up reel 8 to rotate, thus replacing (eliminating) the structural arrangement of the measuring turntable 61. It should be noted that because the placement method of the take-up reel 8 is different from that on the measuring turntable 61, the movement direction of the three-dimensional profile sensor 60 is different. When the measuring turntable 61 is provided, the three-dimensional profile sensor 60 moves vertically; when the lifting trailer 7 is used, the three-dimensional profile sensor 60 moves horizontally. However, both methods move the three-dimensional profile sensor 60 from one end of the take-up reel 8 to the other, that is, along the axial direction of the take-up reel 8.

[0046] Furthermore, the lifting trailer 7 is equipped with a barcode reader to read the unique identifier on the take-up reel 8 and send the unique identifier to the controller; the offline measurement device 6 binds and stores the unique identifier of the take-up reel 8 with the data when generating offline contour data.

[0047] Example 3

[0048] In Embodiment 1, an axial movement mechanism 10 is provided, which drives the support 91 and the laser displacement sensor 90 on it to move. This embodiment provides an alternative solution, in which the support 91 is directly mounted on the guide wheel movement mechanism 50 of the existing take-up machine 5.

[0049] Specifically, the existing take-up machine 5's guide wheel moving mechanism 50 includes a movable slide table 501, which can drive the guide wheel 503 to move axially along the take-up main shaft 51, thereby enabling multiple strands of copper wire to be wound onto the take-up reel 8. Therefore, by directly mounting the bracket 91 on the guide wheel moving mechanism 50, and using the guide wheel moving mechanism 50 to drive the laser displacement sensor 90 to move axially along the take-up main shaft 51, the structural setup of the axial moving mechanism 10 can be eliminated, further simplifying the overall structure.

[0050] Furthermore, such as Figure 6 and 7 As shown, the guide wheel moving mechanism 50 is a structural configuration in the prior art (such as the structural configuration used in a multi-strand copper wire take-up machine disclosed in Chinese Patent CN112897213A). It is briefly described here. It mainly includes a base 500, a slide table 501 and a guide wheel frame 502. The base 500 is fixedly connected to the take-up machine 5; the slide table 501 is slidably connected to the base 500, and a drive screw (not shown in the figure) is rotatably connected to the base 500. The drive screw is connected to a drive motor (not shown in the figure); the housing of the drive motor is fixedly connected to the base 500, and the output shaft of the drive motor is fixedly connected to the drive screw.

[0051] The slide table 501 is threadedly connected to the drive screw, and the guide wheel frame 502 and the bracket 91 are both fixedly connected to the slide table 501; a pair of guide wheels 503 are rotatably connected to the guide wheel frame 502, and multiple strands of copper wire will wrap around the guide wheels 503 and be wound on the take-up reel 8.

[0052] During the online calibration phase, the movement of the slide table 501 drives the movement of the support 91 and the laser displacement sensor 90 on it for measurement. In the production process, the slide table 501 drives the guide wheel frame 502 and the guide wheel 503 on it to move, winding multiple strands of copper wire onto the take-up reel 8.

[0053] Example 4

[0054] This embodiment provides a control method for the device, specifically including the following steps: Offline measurement steps: When the take-up reel 8 is not installed, perform a three-dimensional contour scan on the cylindrical surface of the take-up reel 8 to generate offline contour data associated with the unique identifier of the take-up reel 8; Transportation and installation steps: The take-up reel 8 is transported to the take-up station by the lifting trailer 7, and the take-up reel 8 is installed on the take-up spindle 51 and locked. Online calibration steps: Use an axially movable laser displacement sensor 90 to collect radial displacement data at at least one measurement section position under a full rotation angle to obtain online measurement data; Data comparison and correction steps: Compare the contour data of the corresponding axial position in the online measurement data with the offline contour data, separate the eccentric component introduced by the misalignment of the installation, and correct the offline contour data according to the eccentric component to generate the final radius data for velocity feedforward compensation. Command generation steps: Based on the target linear velocity and final radius data, generate a velocity feedforward command table that varies with the rotation angle; Production operation steps: The speed feedforward command table is sent to the servo driver, and feedforward speed compensation is performed on the take-up spindle 51 during the production process.

[0055] Furthermore, during the transportation and installation process, the barcode reader on the lifting trailer 7 reads the unique identifier of the take-up reel 8 and sends it to the controller, which then retrieves the corresponding offline profile data based on the unique identifier.

[0056] Furthermore, in the data comparison and correction step, the specific method for separating the eccentric component is as follows: the online measurement data and the offline contour data are compared angle by angle, the difference signal between the two is extracted, and the component in the difference signal that shows a periodic change with each rotation of the take-up spindle 51 is taken as the installation eccentric component.

[0057] If the eccentricity component is small and within the allowable range, the offline contour data is used directly as the final radius data; if the eccentricity component is large and exceeds the allowable range, the offline contour data is compensated and corrected using the eccentricity component to obtain the final radius data suitable for the actual installation state.

[0058] Furthermore, in the online calibration step, the laser displacement sensor 90 is moved to at least two measurement sections at different axial positions, and online measurement data of each section is collected respectively; in the data comparison and correction step, the eccentricity component of each section is calculated respectively. If the difference of the eccentricity component of each section exceeds the preset threshold, it is determined that the take-up reel 8 has a cylindricity error, and the average value of the eccentricity component of each section is used to correct the offline contour data.

[0059] Furthermore, in the production operation steps, the servo drive looks up the corresponding angular velocity command from the speed feedforward command table based on the real-time angle of the take-up spindle 51 as the main speed command, and at the same time superimposes the PID feedback adjustment signal to jointly drive the take-up spindle 51.

[0060] Once a take-up reel 8 is fully loaded (wound with copper wire) and unloaded, the offline measurement steps are repeated until the production operation steps are completed, and the next take-up reel 8 is processed.

[0061] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A copper and wire hot tinning device, comprising a pay-off rack (1), an annealing furnace (2), an acid pickling tank (3), a tin furnace (4) and a take-up machine (5) arranged in sequence; characterized in that, Also includes: The offline measuring device (6) is used to perform a three-dimensional contour scan of the cylindrical surface of the take-up reel (8) when the take-up reel (8) is not installed, and generate offline contour data associated with the unique identifier of the take-up reel (8); A lifting trailer (7) is used to carry the take-up reel (8) and to transport the take-up reel (8) from the offline measuring device (6) to the take-up machine (5) and to assist in installing the take-up reel (8) onto the take-up spindle (51) of the take-up machine (5); An online measuring device (9) is installed on the take-up machine (5). The online measuring device (9) includes an angle encoder and a laser displacement sensor (90). The real-time rotation angle of the take-up spindle (51) is obtained through the angle encoder. The laser displacement sensor (90) is installed on the bracket (91) and its laser beam is pointed to the cylindrical surface of the take-up reel (8) after installation. It is used to collect radial displacement signals. The controller is electrically connected to the offline measuring device (6), the lifting trailer (7), the angle encoder, the laser displacement sensor (90), and the servo driver that drives the take-up spindle (51), respectively. The controller calls the corresponding offline contour data based on the unique identifier of the take-up reel (8) transported by the lifting trailer (7), and uses the laser displacement sensor (90) to perform online measurement after the take-up reel (8) is installed. The online measurement data is compared with the offline contour data to separate the installation eccentricity component. The offline contour data is corrected according to the eccentricity component to generate the final radius data, and then a speed feedforward instruction table that varies with the rotation angle is generated and sent to the servo driver for feedforward speed compensation of the take-up spindle (51).

2. A copper and silk hot tinning device according to claim 1, characterized in that: It also includes an axial movement mechanism (10), which is connected to the bracket (91) and is used to drive the bracket (91) and the laser displacement sensor (90) on it to move along the axial direction of the take-up spindle (51) to measure multiple preset positions; the axial movement mechanism (10) is a linear guide module driven by a servo motor.

3. A copper and silk hot tinning device according to claim 1, characterized in that: The offline measurement device (6) is a three-dimensional contour sensor (60), which is used to scan the cylindrical surface of the take-up reel (8) during rotation to generate the offline contour data.

4. The copper wire hot-dip tin plating apparatus according to claim 3, characterized in that: The offline measuring device (6) also includes a measuring turntable (61), which is used to carry the take-up reel (8) and drive it to rotate at a constant speed.

5. The copper wire hot-dip tin plating apparatus according to claim 1, characterized in that: The lifting trailer (7) includes a vehicle body (70), a traveling mechanism (71), and a lifting mechanism (72); the traveling mechanism (71) and the lifting mechanism (72) are both mounted on the vehicle body (70); the lifting mechanism (72) includes a lifting frame (720) and lifting rollers (721); the lifting frame (720) is connected to the vehicle body (70) via a lift (722), and there are two lifting rollers (721) spaced apart; the take-up reel (8) is supported by the two lifting rollers (721).

6. The copper wire hot-dip tin plating apparatus according to claim 5, characterized in that: The lifting mechanism (72) has two parts; the lifting roller (721) is an electric roller, which carries the take-up reel (8) and drives it to rotate at a constant speed.

7. The copper wire hot-dip tin plating apparatus according to claim 5, characterized in that: The lifting trailer (7) is equipped with a barcode reader for reading the unique identifier on the take-up reel (8) and sending the unique identifier to the controller; the offline measuring device (6) binds and stores the unique identifier of the take-up reel (8) with the data when generating offline contour data.

8. The copper wire hot-dip tin plating apparatus according to claim 1, characterized in that: The bracket (91) is mounted on the guide wheel moving mechanism (50) of the take-up machine (5); the guide wheel moving mechanism (50) drives the laser displacement sensor (90) to move along the axial direction of the take-up main shaft (51).

9. The copper wire hot-dip tin plating apparatus according to claim 8, characterized in that: The guide wheel moving mechanism (50) includes a base (500), a slide (501), and a guide wheel frame (502). The base (500) is fixedly connected to the take-up machine (5). The slide (501) is slidably connected to the base (500). A drive screw is rotatably connected to the base (500), and a drive motor is connected to the drive screw. The slide (501) is threadedly connected to the drive screw. The guide wheel frame (502) and the bracket (91) are both fixedly connected to the slide (501). A pair of guide wheels (503) are rotatably connected to the guide wheel frame (502).

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