A device for testing the surface slip of an enameled wire

Abstract

The utility model discloses a kind of enameled wire surface slip testing devices, it is related to enameled wire surface slip testing relevant field, including pay-off device, tension device, tension tester and take-up device, the tension device is fixed on bracket, and tension device side is provided with tension tester, and take-up device is provided with in tension tester rear side, the tension device front side is provided with pay-off device, the tension device includes protective shell and round bar assembly, and round bar assembly is fixed in protective shell interior, the tension tester includes two groups of press wheel that upper support is fixed and the support determination wheel that lower installation, and silk thread is passed between press wheel and adjusting lever, tension tester integrated pressure sensor and data display screen, when enameled wire passes between press wheel and support determination wheel, the pressure that support determination wheel receives can be converted into electrical signal by sensor in real time, and tension data is directly displayed on display screen, the quantization test of surface slip is realized.

Description

Technical Field

[0001] This utility model relates to the field of surface slip test of enameled wire, specifically to a surface slip test device for enameled wire. Background Technology

[0002] As a core winding material for electronic and electrical equipment such as motors, transformers, and inductors, the surface smoothness of enameled wire directly determines the winding processing efficiency and product quality. In actual production, enameled wire needs to undergo multiple processes such as unwinding, winding, and rewinding. Poor surface smoothness will lead to increased friction during winding, which will not only easily cause enamel film wear and wire breakage, but also increase equipment energy consumption and even affect the tightness and electrical performance stability of the winding. Therefore, accurate testing of the surface smoothness of enameled wire is a key link in production quality control and product selection.

[0003] Simply guiding enameled wire with rollers cannot simulate the complex wire tension environment in actual production. Furthermore, manual tension adjustment is easily affected by operational experience, resulting in large fluctuations and poor repeatability in test data for the same batch of samples.

[0004] Judging slipperiness by visually observing the wear of enameled wires or by touch alone cannot quantify the relationship between surface friction and tension, making it difficult to meet the quantitative requirements of high-precision production for slipperiness indicators and failing to provide data support for product quality improvement. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the surface slippage of enameled wire, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a device for testing the surface slippage of enameled wire is provided, comprising a wire feeding device, a tension device, a tension measuring instrument, and a wire take-up device. The tension device is fixed on a support, and the tension measuring instrument is arranged on the side of the tension device, with the wire take-up device arranged on the rear side of the tension measuring instrument. The wire feeding device is arranged on the front side of the tension device. The tension device includes a protective shell and a round bar assembly, with the round bar assembly fixed inside the protective shell. The round bar assembly includes a fixed frame and ceramic round bars mounted on the fixed frame via multiple sets of adjusting seats. The tension measuring instrument includes two sets of pressure rollers fixed on the upper support and a supporting measuring roller mounted below, with the wire passing between the pressure rollers and the adjusting rod. The adjusting rod adjusts the position of the pressure rollers.

[0007] Furthermore, the adjusting seat includes a mounting plate fixed by bolts, and the mounting plate has a waist-shaped hole for mounting bolts. A ceramic round rod is mounted on the turning top plate of the mounting plate by a screw, and an elastic element is sleeved on the screw on the back of the turning top plate of the mounting plate.

[0008] Furthermore, the fixing frame is fixed to the bottom plate of the protective shell by bolts, and at least six ceramic round rods are installed on the fixing frame. The position of the ceramic round rods on the fixing frame is adjusted by adjusting seats.

[0009] Furthermore, the tension measuring instrument also includes a pressure sensor and a data display screen. The pressure sensor is disposed between the support measuring wheel and the base of the tension measuring instrument, and the data display screen is electrically connected to the pressure sensor.

[0010] Furthermore, the wire feeding device includes a wire feeding reel and a damper. The wire feeding reel is rotatably mounted on the bracket via bearings, and the damper is connected to the rotating shaft of the wire feeding reel.

[0011] Furthermore, a positioning pin is provided at the connection between the ceramic rod and the adjusting seat. The positioning pin is arranged radially along the ceramic rod to restrict the circumferential rotation of the ceramic rod relative to the adjusting seat.

[0012] Furthermore, the take-up device includes a take-up reel and a drive motor, the drive motor being connected to the take-up reel in a transmission manner, for driving the take-up reel to rotate and achieve the winding of the enameled wire.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The tension measuring instrument integrates a pressure sensor and a data display screen. When the enameled wire passes between the pressure roller and the support measuring roller, the pressure on the support measuring roller can be converted into an electrical signal in real time by the sensor, and the tension data can be displayed intuitively on the screen. This enables quantitative testing of surface slippage, avoids the errors of traditional subjective judgment, and provides accurate data for product quality grading.

[0014] The adjusting seat, through the engagement of the oblong hole and bolts, allows for flexible adjustment of the position of the mounting plate on the fixed frame, thereby changing the spacing and height of the ceramic rods. At the same time, the combination of the screw and the elastic element allows for fine adjustment of the tightness of the ceramic rods, enabling the device to adapt to enameled wires of different diameters. This eliminates the need to configure separate testing equipment for different specifications of products, significantly reducing the company's equipment investment and maintenance costs.

[0015] The tension measuring instrument's adjustment rod can quickly adjust the position of the pressure roller, achieving precise control of the enameled wire clamping force and adapting to the testing requirements of different coating hardnesses; the positioning pin design of the ceramic rod and the adjustment seat allows for quick disassembly and fixation of the ceramic rod, avoiding wire deviation caused by the circumferential rotation of the rod during adjustment. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the present invention; Figure 3 This is a three-dimensional schematic diagram of the round bar assembly of this utility model; Figure 4 This is a top view of the round bar assembly of this utility model; Figure 5 This is a schematic diagram of the installation of the adjustment seat of this utility model; Figure 6 This is a schematic diagram of the tension measuring instrument of this utility model.

[0017] In the diagram: 1. Wire feeding device; 2. Tension device; 21. Protective shell; 22. Round bar assembly; 221. Adjusting seat; 2211. Mounting plate; 2212. Waist-shaped hole; 2213. Elastic element; 2214. Screw; 222. Ceramic round bar; 223. Fixing frame; 3. Tension measuring instrument; 31. Pressure roller; 32. Adjusting rod; 33. Support measuring roller; 4. Wire take-up device. Detailed Implementation

[0018] Please see Figure 1-6 This utility model provides a device for testing the surface slippage of enameled wire, including a wire feeding device 1, a tension device 2, a tension measuring instrument 3, and a wire take-up device 4. The tension device 2 is fixed on a bracket, and the tension measuring instrument 3 is arranged on the side of the tension device 2. The wire take-up device 4 is arranged on the rear side of the tension measuring instrument 3. The wire feeding device 1 is arranged on the front side of the tension device 2. The tension device 2 includes a protective shell 21 and a round bar assembly 22, and the round bar assembly 22 is fixed inside the protective shell 21. The round bar assembly 22 includes a fixing frame 223 and ceramic round bars 222 mounted on the fixing frame 223 through multiple sets of adjusting seats 221. The tension measuring instrument 3 includes two sets of pressure rollers 31 fixed on the upper bracket and a support measuring roller 33 installed below. The wire passes between the pressure rollers 31 and the adjusting rod 32, and the adjusting rod 32 adjusts the position of the pressure rollers 31.

[0019] The adjusting seat 221 includes a mounting plate 2211 fixed by bolts, and the mounting plate 2211 has a waist-shaped hole 2212 for mounting bolts. A ceramic round rod 222 is mounted on the turning top plate of the mounting plate 2211 by a screw 2214. Meanwhile, an elastic element 2213 is sleeved on the screw 2214 on the back of the turning top plate of the mounting plate 2211.

[0020] The mounting bracket 223 is fixed to the base plate of the protective shell 21 by bolts, and at least six ceramic round rods 222 are installed on the mounting bracket 223. The position of the ceramic round rods 222 on the mounting bracket 223 is adjusted by the adjusting seat 221. The base plate of the protective shell 21 is fixed to the mounting platform in the middle of the bracket by four sets of M8 bolts. The bolt tightening torque is controlled to prevent the protective shell from loosening. The mounting bracket 223 is made of Q235 steel plate and is fixed to the pre-set screw holes on the inner base plate of the protective shell 21 by six sets of M6 bolts. The mounting bracket has multiple sets of waist-shaped holes for installing the adjusting seat 221 to accommodate the spacing adjustment of ceramic round rods 222 of different specifications.

[0021] The tension measuring instrument 3 also includes a pressure sensor and a data display screen. The pressure sensor is located between the support measuring wheel 33 and the base of the tension measuring instrument 3, and the data display screen is electrically connected to the pressure sensor. The tension measuring instrument 3 is fixed to the right side of the tension device 2 by a bracket, with a distance of 300mm between them. The pressure wheel 31 is made of polyurethane and is mounted on the rotating shaft of the upper bracket through a bushing to ensure that the pressure wheel can rotate flexibly. The pressure sensor between the support measuring wheel 33 and the base is a strain gauge sensor. The sensor is connected to the data display screen through a signal line. After connection, zero-point calibration is required to ensure that the display screen reading is 0 when there is no external force.

[0022] The pay-off device 1 includes a pay-off reel and a damper. The pay-off reel is rotatably mounted on a bracket via bearings, and the damper is connected to the rotating shaft of the pay-off reel. The pay-off reel is mounted on a preset bearing seat at the front end of the bracket via a deep groove ball bearing (bearing model 6202) to ensure smooth and unobstructed rotation of the pay-off reel. The damper is then connected to the rotating shaft of the pay-off reel via a coupling, and the damper is fixed to a bracket plate on the side of the pay-off device to ensure that the damping force is evenly applied to the pay-off reel.

[0023] A locating pin is provided at the connection between the ceramic rod 222 and the adjusting seat 221. The locating pin is arranged radially along the ceramic rod 222 to restrict the circumferential rotation of the ceramic rod 222 relative to the adjusting seat 221. During assembly, first insert one end of the ceramic rod into the preset hole of the adjusting seat 221, and then insert the locating pin with a diameter of 3mm radially along the ceramic rod. The length of each end of the locating pin protruding is 5mm to ensure that the ceramic rod cannot rotate circumferentially relative to the adjusting seat. Then, the screw 2214 is passed through the threaded hole of the turning top plate and pressed against the other end of the ceramic rod. An elastic element 2213 is fitted between the screw and the back of the turning top plate. By turning the screw, the spring can be compressed or released, thereby finely adjusting the axial pressure of the ceramic rod.

[0024] The take-up device 4 includes a take-up reel and a drive motor. The drive motor is connected to the take-up reel and is used to drive the take-up reel to rotate and achieve the winding of the enameled wire. The shaft of the take-up reel is connected to the output shaft of the drive motor through a coupling. The motor is fixed on the motor base of the bracket. The motor base and the shaft base of the take-up reel are coaxial to avoid uneven winding of the enameled wire during winding.

[0025] Fix the enameled wire to be tested on the pay-off reel, manually pull one end of the enameled wire, and adjust the current of the damper to stabilize the damping force when the pay-off reel rotates, ensuring that the pay-off speed matches the take-up speed and that there is no slack or excessive stretching of the enameled wire.

[0026] Adjust the enameled wire according to the hardness of the enamel film using the adjusting screw 2214. For soft enamel films, control the compression of the elastic element 2213 to 5mm; for hard enamel films, control the compression to 8mm. After adjustment, manually pull the enameled wire and feel that the wire resistance is uniform and there is no jamming.

[0027] Without any enameled wire passing through, start the tension measuring instrument 3 and press the "Zero Point Calibration" button on the data display screen. After the display reading stabilizes at 0, the zero point calibration is complete. If the reading is deviated, check whether the pressure sensor wiring is loose or whether the sensor and the support measuring wheel 33 are in good contact. Ensure that the take-up speed is consistent with the let-out speed, and that the enameled wire remains taut throughout the test.

[0028] If the wire is unevenly wound on the take-up reel, adjust the position of the wire guide wheel of the take-up device to ensure that the enameled wire is evenly wound on the take-up reel, avoiding tension fluctuations caused by local accumulation.

Claims

1. A device for testing the surface slippage of enameled wire, comprising a wire feeding device (1), a tension device (2), a tension measuring instrument (3), and a wire take-up device (4), characterized in that: The tension device (2) is fixed on the bracket, and a tension measuring instrument (3) is provided on the side of the tension device (2). A take-up device (4) is provided on the rear side of the tension measuring instrument (3). A wire release device (1) is provided on the front side of the tension device (2). The tension device (2) includes a protective shell (21) and a round bar assembly (22). The round bar assembly (22) is fixed inside the protective shell (21). The round bar assembly (22) includes a fixed frame (223) and a ceramic round bar (222) installed on the fixed frame (223) by multiple sets of adjusting seats (221). The tension measuring instrument (3) includes two sets of pressure rollers (31) fixed on the upper bracket and a support measuring roller (33) installed below. A wire passes between the pressure roller (31) and the adjusting rod (32). The adjusting rod (32) adjusts the position of the pressure roller (31).

2. The enameled wire surface slippage testing device according to claim 1, characterized in that: The adjusting seat (221) includes a mounting plate (2211) fixed by bolts, and the mounting plate (2211) has a waist-shaped hole (2212) for mounting bolts. A ceramic round rod (222) is mounted on the turning top plate of the mounting plate (2211) by a screw (2214). At the same time, an elastic element (2213) is sleeved on the screw (2214) on the back of the turning top plate of the mounting plate (2211).

3. The enameled wire surface slippage testing device according to claim 1, characterized in that: The fixing frame (223) is fixed to the bottom plate of the protective shell (21) by bolts, and at least six ceramic round rods (222) are installed on the fixing frame (223). At the same time, the position of the ceramic round rods (222) on the fixing frame (223) is adjusted by the adjusting seat (221).

4. The enameled wire surface slippage testing device according to claim 1, characterized in that: The tension measuring instrument (3) also includes a pressure sensor and a data display screen. The pressure sensor is set between the support measuring wheel (33) and the base of the tension measuring instrument (3), and the data display screen is electrically connected to the pressure sensor.

5. The enameled wire surface slippage testing device according to claim 1, characterized in that: The wire feeding device (1) includes a wire feeding reel and a damper. The wire feeding reel is rotatably mounted on a bracket via a bearing, and the damper is connected to the rotating shaft of the wire feeding reel.

6. The enameled wire surface slippage testing device according to claim 3, characterized in that: A positioning pin is provided at the connection between the ceramic rod (222) and the adjusting seat (221). The positioning pin is arranged radially along the ceramic rod (222) to restrict the circumferential rotation of the ceramic rod (222) relative to the adjusting seat (221).

7. The enameled wire surface slippage testing device according to claim 1, characterized in that: The take-up device (4) includes a take-up reel and a drive motor. The drive motor is connected to the take-up reel in a transmission manner and is used to drive the take-up reel to rotate to achieve the winding of the enameled wire.

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