Enameled wire stretching detection device

Abstract

The utility model discloses an enameled wire stretching detection device in the technical field of detection devices, which comprises a rack, a first vertical plate and a second vertical plate are fixedly connected onto the rack, a plurality of stepping motors are mounted on the second vertical plate, the stepping motors are in transmission connection with a winding device, and the winding device is in transmission connection with a motor. A movable plate is arranged between the first vertical plate and the second vertical plate, a tension sensor is installed on the movable plate, a display screen is installed on the upper portion of the movable plate, and a lead screw conveying device used for driving the movable plate to move is installed on the machine frame. Through the arrangement of the winding device in which the worm and gear transmission mechanism is driven by the stepping motor to drive the winding wheel to rotate, the accurate control of the tension force of the enameled wire sample is realized. The structure not only improves the stability and response speed in the winding process, but also has good self-locking performance, and is helpful for avoiding accidental loosening caused by power loss of the motor, thereby improving the safety and repeated precision in the testing process.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a tensile testing device for enameled wire. Background Technology

[0002] In the fields of electrical engineering and materials testing, enameled wire, as an indispensable key conductive material in electromagnetic equipment such as motors and transformers, directly affects the overall performance and service life of the equipment due to its mechanical and electrical properties. With the continuous improvement of industrial automation and the increasing demand for high-performance electronic components, the requirements for enameled wire quality testing are also rising. Tensile strength, as one of the important indicators for measuring the mechanical properties of enameled wire, directly affects the product qualification rate and the reliability of subsequent applications due to its testing accuracy and efficiency. In recent years, with the advancement of sensing technology, servo control technology, and data processing systems, enameled wire tensile testing devices have gradually developed towards automation and intelligence. Traditional manual tensile testing methods, due to problems such as large human error, low efficiency, and inconvenient data recording, have been gradually replaced by automatic testing systems based on sensors and microprocessors.

[0003] However, existing tensile testing devices for enameled wire still have many shortcomings, particularly in terms of force measurement accuracy, automation control, and safety. Existing tensile force measurement systems mostly rely on static calibration and lack dynamic compensation mechanisms, leading to increased measurement errors during high-speed tensile testing. Furthermore, the drive mechanisms generally use pneumatic or hydraulic systems, which are not only slow in response and expensive to maintain, but also unsuitable for precise displacement control. Finally, in terms of safety protection and human-machine interaction, existing equipment often lacks necessary protective measures and intuitive operating interfaces, increasing operational risks and reducing ease of use. Therefore, there is an urgent need for a new type of tensile testing device with a reasonable structure, precise control, high safety, and applicability to various specifications of enameled wire to overcome these deficiencies.

[0004] This utility model provides a tensile testing device for enameled wire, which systematically improves upon existing technologies by addressing issues such as low measurement accuracy, low automation, and poor safety. By introducing a stepper motor-driven worm gear winding device, a DC motor-driven lead screw conveying system, an adjustable double-pressure plate fixing mechanism, and a mobile force measuring platform with an integrated display screen, high-precision control and real-time monitoring of the enameled wire tensile process are achieved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tensile testing device for enameled wire, comprising a frame, on which a first vertical plate and a second vertical plate are fixedly connected. A plurality of stepper motors are mounted on the second vertical plate, and each stepper motor is driven by a winding device. A movable plate is provided between the first and second vertical plates, and a tension sensor is mounted on the movable plate. A display screen is mounted on the upper part of the movable plate. A screw conveyor for moving the movable plate is mounted on the frame. A first steel cable is fixedly connected to the tension sensor, and a second steel cable is connected to the winding device.

[0006] The ends of the first and second steel cables are equipped with fixing mechanisms for connecting enameled wires. The fixing mechanism includes an upper pressure plate, and the upper pressure plate is connected to a lower pressure plate by bolts.

[0007] The lower pressure plate and the upper pressure plate are respectively provided with semi-circular grooves. The upper pressure plate is provided with a fixing ring. A connecting rod is fixedly connected between the first upright plate and the second upright plate. The movable plate is provided with a hole for the connecting rod to pass through.

[0008] The lead screw conveying device includes a DC motor, which is driven by a lead screw. The lead screw is driven by a lead screw nut and a moving plate. The end of the lead screw is connected to a lead screw bearing seat.

[0009] A protective upright plate is fixedly connected to the frame, and a transparent protective plate is fixedly connected to the upper part of the protective upright plate. A switch is installed on the protective upright plate.

[0010] The winding device includes a housing, on which a worm gear is rotatably connected. A worm is connected to the end of the output shaft of the stepper motor. A winding wheel is coaxially connected to the worm gear. The end of the second steel cable is wound and fixed on the winding wheel.

[0011] Compared with existing technologies, the advantages of this invention are as follows: by setting up a winding device in which a stepper motor drives a worm gear transmission mechanism to rotate the winding wheel, precise control of the tension force of the enameled wire sample is achieved. This structure not only improves the stability and response speed of the winding process, but also has good self-locking performance, which helps to avoid accidental loosening due to motor power failure, thereby improving the safety and repeatability of the testing process.

[0012] Secondly, the method of using a DC motor to drive a lead screw-nut transmission mechanism to move the moving plate along the guide rail replaces the traditional pneumatic or hydraulic drive system, making displacement control more precise and stable, and facilitating the installation of enameled wires by keeping the steel cable in a relaxed state.

[0013] Furthermore, the display screen is integrated on the upper part of the mobile board, which makes it easy for operators to observe the changes in tensile force and the testing process in real time, improving the human-machine interaction experience and ease of operation; while the closed safety protection structure composed of the transparent protective plate and the protective upright plate effectively prevents safety hazards caused by the fragmentation of the sample during the tensile process, improving the safety of the equipment.

[0014] In summary, this utility model, by optimizing the mechanical structure design, introducing a high-precision sensing and servo control system, and strengthening human-machine interaction and safety protection functions, solves the defects of existing enameled wire tensile testing devices, such as poor clamping stability, low measurement accuracy, low automation, and insufficient safety. It has the advantages of reasonable structure, simple operation, high testing accuracy, and wide applicability, and is suitable for the needs of efficient and reliable testing of the mechanical properties of enameled wires in the field of modern electrical material testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a first-view structural schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure after removing the transparent protective plate in this utility model.

[0018] Figure 3 This is a schematic diagram of the lead screw and lead screw bearing housing in this utility model.

[0019] Figure 4 This is a schematic diagram of the winding device structure in this utility model.

[0020] Figure 5 This is a schematic diagram of the winding device in this utility model after removing the housing.

[0021] Figure 6 This is the utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Transparent protective plate; 2. Protective upright plate; 3. Frame; 4. Second upright plate; 5. Stepper motor; 6. Moving plate; 7. First upright plate; 8. Fixing mechanism; 81. Upper pressure plate; 82. Fixing ring; 83. Lower pressure plate; 84. Semi-circular groove; 9. Winding device; 91. Worm gear; 92. Housing; 93. Worm wheel; 94. Winding wheel; 10. DC motor; 11. Tension sensor; 12. First steel cable; 13. Lead screw; 14. Lead screw bearing seat; 15. Connecting rod; 16. Enamelled wire; 17. Display screen; 18. Second steel cable. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-6 The enameled wire tensile testing device shown includes a frame 3, on which a first vertical plate 7 and a second vertical plate 4 are fixedly connected. Several stepper motors 5 are mounted on the second vertical plate 4. The stepper motors 5 are driven by a winding device 9. The winding device 9 includes a housing 92, on which a worm gear 93 is rotatably connected. A worm 91 is connected to the end of the output shaft of the stepper motors 5. A winding wheel 94 is coaxially connected to the worm gear 93. The end of a second steel cable 18 is wound and fixed on the winding wheel 94. The stepper motors 5 drive the worm 91 and worm gear 93 to rotate, causing the winding wheel 94 to drive the second steel cable 18 to move, thereby applying tension to the enameled wire 16.

[0025] A movable plate 6 is provided between the first upright plate 7 and the second upright plate 4. A tension sensor 11 is installed on the movable plate 6. A display screen 17 is installed on the upper part of the movable plate 6. The display screen 17 is connected to the tension sensor 11 through a wire and is used to display the current / tension value output by the tension sensor 11.

[0026] To facilitate the installation of the enameled wire 16 in the relaxed state, a screw conveyor device for driving the moving plate 6 is installed on the frame 3. The screw conveyor device includes a DC motor 10, which is connected to a screw 13. The screw 13 is connected to the moving plate 6 through a screw nut, and a screw bearing seat 14 is connected to the end of the screw 13.

[0027] A first steel cable 12 is fixedly connected to the tension sensor 11, and a second steel cable 18 is connected to the winding device 9. The ends of the first steel cable 12 and the second steel cable 18 are equipped with a fixing mechanism 8 for connecting the enameled wire 16. The fixing mechanism 8 includes an upper pressure plate 81, and a lower pressure plate 83 is bolted to the upper pressure plate 81. The upper pressure plate 81 and the lower pressure plate 83 together fix the enameled wire 16.

[0028] The lower pressure plate 83 and the upper pressure plate 81 are respectively provided with semi-circular grooves 84. The upper pressure plate 81 is provided with a fixing ring 82. A connecting rod 15 is fixedly connected between the first vertical plate 7 and the second vertical plate 4. The movable plate 6 is provided with a hole for the connecting rod 15 to pass through.

[0029] A protective upright plate 2 is fixedly connected to the frame 3, and a transparent protective plate 1 is fixedly connected to the upper part of the protective upright plate 2 to prevent the enameled wire 16 from breaking and injuring people. A switch is installed on the protective upright plate 2.

[0030] Working principle: A controllable tensile force is applied to the enameled wire 16 through a mechanical transmission system, and the changes in tensile force are monitored in real time by a sensor and display system, thereby achieving accurate detection of the mechanical properties of the enameled wire 16.

[0031] Before the test begins, the operator starts the DC motor 10 in the lead screw conveyor via a control switch, driving the lead screw 13 to rotate. This causes the movable plate 6, connected to the lead screw 13 via the lead screw nut, to move back and forth along the guide direction of the connecting rod 15. This adjusts the distance between the first steel cable 12 and the second steel cable 18, easing the tension of both cables to facilitate the installation or replacement of the enameled wire 16 sample. The two ends of the enameled wire 16 to be tested are then inserted into the semi-circular grooves 84 between the pressure plates. The upper pressure plate 81 and the lower pressure plate 83 are then tightened by bolts to ensure the enameled wire 16 is securely clamped within the fixing mechanism 8. After fixing, the test procedure is started.

[0032] During testing, stepper motor 5 drives worm gear 91 to rotate, which in turn drives worm wheel 93, which meshes with it, to rotate. Worm wheel 93 is coaxially connected to winding wheel 94, thereby driving the second steel cable 18 wound on it to move, thus applying tensile force to one end of enameled wire 16. At the same time, first steel cable 12 is connected to the other end of enameled wire 16 through fixing mechanism 8, and transmits the tension to tension sensor 11. Tension sensor 11 converts the applied tension into an electrical signal and transmits it to display screen 17, realizing dynamic display and data acquisition of tension value. By controlling the speed and rotation angle of stepper motor 5, the stretching rate can be precisely adjusted to meet the requirements of different testing standards for stretching speed.

[0033] The safety protection structure formed by the transparent protective plate 1 and the protective upright plate 2 effectively prevents the fragments generated when the enameled wire 16 breaks from flying, ensuring the personal safety of the operators.

[0034] In summary, this enameled wire tensile testing device, driven by a stepper motor 5, utilizes high-precision sensing technology and mechanical linkage design to achieve automated control of the tensile process of enameled wire 16 and high-precision testing of its mechanical properties. It has advantages such as reasonable structure, convenient operation, stable testing, and safety and reliability, and is suitable for the mechanical strength testing needs of various enameled wire 16 materials.

[0035] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A tensile testing device for enameled wire, comprising a frame (3), characterized in that: The frame (3) is fixedly connected to a first upright plate (7) and a second upright plate (4). Several stepper motors (5) are installed on the second upright plate (4). The stepper motors (5) are driven by a winding device (9). A moving plate (6) is provided between the first upright plate (7) and the second upright plate (4). A tension sensor (11) is installed on the moving plate (6). A display screen (17) is installed on the upper part of the moving plate (6). A screw conveyor for driving the moving plate (6) is installed on the frame (3). A first steel cable (12) is fixedly connected to the tension sensor (11). A second steel cable (18) is connected to the winding device (9).

2. The enameled wire tensile testing device according to claim 1, characterized in that: The ends of the first steel cable (12) and the second steel cable (18) are equipped with a fixing mechanism (8) for connecting the enameled wire (16). The fixing mechanism (8) includes an upper pressure plate (81) and a lower pressure plate (83) is connected to the upper pressure plate (81) by bolts.

3. The enameled wire tensile testing device according to claim 2, characterized in that: The lower pressure plate (83) and the upper pressure plate (81) are respectively provided with semi-circular grooves (84), the upper pressure plate (81) is provided with a fixing ring (82), the first upright plate (7) and the second upright plate (4) are fixedly connected with a connecting rod (15), and the moving plate (6) is provided with a hole for the connecting rod (15) to pass through.

4. The enameled wire tensile testing device according to claim 1, characterized in that: The lead screw conveying device includes a DC motor (10), which is connected to a lead screw (13). The lead screw (13) is connected to a moving plate (6) via a lead screw nut. The end of the lead screw (13) is connected to a lead screw bearing seat (14).

5. The enameled wire tensile testing device according to claim 1, characterized in that: A protective plate (2) is fixedly connected to the frame (3), and a transparent protective plate (1) is fixedly connected to the upper part of the protective plate (2). A switch is installed on the protective plate (2).

6. The enameled wire tensile testing device according to claim 1, characterized in that: The winding device (9) includes a housing (92), on which a worm gear (93) is rotatably connected. A worm (91) is connected to the end of the output shaft of the stepper motor (5). A winding wheel (94) is coaxially connected to the worm gear (93). The end of the second steel cable (18) is wound and fixed on the winding wheel (94).

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