A tensile strength testing device for enameled wire

Abstract

This invention provides a tensile strength testing device for enameled wire, including a sliding block. A connecting rod is fixedly connected to the side of the sliding block. A take-up wheel capable of winding and testing multiple quantities of enameled wire is inserted into the middle of the connecting rod. Limiting plates for clamping and fixing the wound enameled wire are respectively provided at the upper and lower ends of the take-up wheel. A fixing frame for limiting and fixing the take-up wheel is fixedly connected to the middle of the connecting rod by bolts. Two limiting sleeves are sleeved in the middle of the fixing frame. Both ends of the fixing frame are threaded with compression bolts that compress the limiting sleeves. The limiting plate has an arc-shaped structure at the end away from the sliding block and a horizontal structure at the end near the sliding block. Both the inner and outer walls of the limiting plate are arc-shaped. The limiting plate is located between the limiting sleeves and the take-up wheel. This invention can amplify the tensile strength of a single enameled wire by a factor of two, thereby ensuring the accuracy of the test results.

Description

Technical Field

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

[0002] Enamelled wire consists of a conductor and an insulation layer. The bare wire is annealed and softened, then coated with enamel multiple times and baked. Enamelled wire is mainly used in motor windings and electrical appliances. Commonly used enamelled wires have relatively small diameters, which necessitates precise control of the traction force during winding. Excessive traction force can easily cause the wire to break, while insufficient traction force results in loose and uneven winding, severely affecting the winding quality. Therefore, the tensile strength of the enamelled wire needs to be tested before winding to control the traction force during subsequent winding. However, most existing tensile strength tests on enameled wires use single-strand testing, which is inaccurate due to the small diameter of the wire. Therefore, the enameled wire is folded and clamped during testing. However, traditional tensile strength testing equipment uses clamping devices that hold individual wires. Folding the enameled wire for testing causes the wires to be squeezed and pressed together during clamping. Since the friction between the wires is low, they are prone to slipping during prolonged pulling, leading to inaccurate test results. Utility Model Content

[0003] The purpose of this invention is to provide a tensile testing device for enameled wire to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a tensile testing device for enameled wire, including a sliding block, a plug rod fixedly connected to the side end of the sliding block, a take-up wheel capable of winding and detecting multiple quantities of enameled wire inserted into the middle of the plug rod, a limiting plate for clamping and fixing the wound enameled wire respectively provided at the upper and lower ends of the take-up wheel, and a fixing frame for limiting and fixing the take-up wheel fixedly connected to the middle of the plug rod by bolts;

[0005] The fixing frame has two limiting sleeves sleeved in the middle, and both ends of the fixing frame are threaded with extrusion bolts that extrude the limiting sleeves.

[0006] The limiting plate has an arc-shaped structure at the end away from the sliding block and a horizontal structure at the end near the sliding block. Both the inner and outer walls of the limiting plate are arc-shaped. The limiting plate is located between the limiting sleeve and the winding wheel.

[0007] The take-up reel has multiple slots on its side for limiting the enameled wire. The slots are located in the middle of the two limiting plates. The take-up reel has a plug-in slot near the sliding block on its side.

[0008] Preferably, the plug rod has a rectangular structure, and the winding wheel has a rectangular through hole in the middle, through which the winding wheel is plugged into the plug rod.

[0009] Preferably, the fixing frame has an I-shaped structure, with both ends of the compression bolt penetrating the top structure of the fixing frame, and the top of the compression bolt abutting against the limiting sleeve plate.

[0010] Preferably, a compression spring is welded and fixed between the limiting sleeve and the fixing frame, and the compression bolt is located in the middle of the compression spring.

[0011] Preferably, a limiting frame is provided between the limiting plate and the limiting sleeve plate, and the limiting frame is composed of multiple auxiliary plates, which together with the limiting plate and the limiting sleeve plate form multiple triangular structures.

[0012] Preferably, the insertion slot is an annular structure, the opening of the insertion slot is a figure-eight shape, and the inner sidewall of the insertion slot near the bottom is a vertical structure.

[0013] Preferably, a plug plate is welded and fixed to the inner side wall of the limiting plate, and a ball bearing is embedded in the end of the plug plate near the winding wheel.

[0014] Preferably, the winding reel has a mounting plate at one end near the sliding block, and the mounting plate has two T-shaped mounting grooves on its side. The sliding block is slidably connected to the mounting groove, and an electric actuator is fixedly connected to the inner wall of the mounting groove. A connecting seat is fixedly connected to the side end of the sliding block, and a pressure sensor is fixedly connected to the power output end of the electric actuator by bolts. The detection end face of the pressure sensor abuts against the side end of the connecting seat.

[0015] The beneficial effects of the extrusion device provided by this utility model are as follows: a single enameled wire is evenly wound onto the groove of the take-up wheel, and the enameled wire is separated by the groove. Then, the enameled wire is extruded and fixed by a limiting plate, ensuring that the enameled wires are relatively separated during the tensile testing process, preventing the enameled wires from moving during the test, and ensuring the accuracy of the test results. This device can amplify the tensile strength of a single enameled wire by a factor of two, making the test results easier to detect and ensuring the accuracy of the test results. Attached Figure Description

[0016] Figure 1 This is a three-dimensional connection diagram of the winding wheel and sliding block provided by this utility model.

[0017] Figure 2This is a three-dimensional connection diagram of the winding wheel and the limiting plate provided by this utility model.

[0018] Figure 3 This is a schematic diagram of the tensile strength test of enameled wire provided by this utility model.

[0019] In the diagram: 1. Sliding block, 2. Connecting rod, 3. Fixing frame, 4. Limiting plate, 5. Limiting sleeve, 6. Limiting bracket, 7. Extrusion bolt, 8. Extrusion spring, 9. Rewinding wheel, 10. Slot, 11. Connecting plate, 12. Connecting groove, 13. Mounting plate, 14. Mounting groove, 15. Connecting seat, 16. Electric actuator, 17. Pressure sensor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] See Figure 1-3 This utility model provides a tensile strength testing device for enameled wire, comprising a sliding block 1, a connecting rod 2 fixedly connected to the side end of the sliding block 1, a take-up wheel 9 for winding and multiple-quantity testing of enameled wire inserted into the middle of the connecting rod 2, a limiting plate 4 for clamping and fixing the wound enameled wire at the upper and lower ends of the take-up wheel 9, and a fixing frame 3 for limiting and fixing the take-up wheel 9 fixedly connected to the middle of the connecting rod 2 by bolts, wherein two limiting sleeves 5 are sleeved in the middle of the fixing frame 3. Both ends of the fixed frame 3 are threaded with compression bolts 7 that compress the limiting sleeve plate 5. The limiting plate 4 has an arc-shaped structure at the end away from the sliding block 1 and a horizontal structure at the end near the sliding block 1. Both the inner and outer walls of the limiting plate 4 are arc-shaped. The limiting plate 4 is located between the limiting sleeve plate 5 and the winding wheel 9. The winding wheel 9 has multiple slots 10 on its side for limiting the enameled wire. The slots 10 are located in the middle of the two limiting plates 4. The winding wheel 9 has a insertion slot 12 on its side near the sliding block 1.

[0022] The plug rod 2 has a rectangular structure, and the winding wheel 9 has a rectangular through hole in the middle. The winding wheel 9 is plugged into the plug rod 2 through the through hole. When the winding wheel 9 is plugged into the plug rod 2, it will be restricted and will not rotate during the detection process, thus avoiding any impact on the detection results.

[0023] The fixing frame 3 has an I-shaped structure. The two ends of the compression bolt 7 pass through the top structure of the fixing frame 3. The top of the compression bolt 7 abuts against the limiting sleeve plate 5. A compression spring 8 is welded and fixed between the limiting sleeve plate 5 and the fixing frame 3. The compression bolt 7 is located in the middle of the compression spring 8. When the take-up wheel 9 is inserted into the plug rod 2, the compression bolt 7 is rotated to compress the limiting sleeve plate 5, thereby pushing the limiting sleeve plate 5 and the limiting plate 4 to slide along the fixing frame 3. This allows the limiting plate 4 to clamp and fix the enameled wire on the take-up wheel 9, preventing the enameled wire from moving during the testing process and ensuring the accuracy of the test results.

[0024] A limiting frame 6 is provided between the limiting plate 4 and the limiting sleeve plate 5. The limiting frame 6 is composed of multiple auxiliary plates. The auxiliary plates, the limiting plate 4, and the limiting sleeve plate 5 form multiple triangular structures. The limiting frame 6 can limit and support the limiting plate 4, keeping the end of the limiting plate 4 near the sliding block 1 horizontal. At the same time, it works in conjunction with the limiting sleeve plate 5 to ensure that the limiting plate 4 can move along the fixed frame 3, so that the limiting plate 4 and the winding wheel 9 are parallel to each other, ensuring that the extrusion pressure is uniform when each enameled wire is extruded.

[0025] The insertion slot 12 has an annular structure and an opening that is V-shaped. The inner sidewall of the insertion slot 12 near the bottom is vertical. An insertion plate 11 is welded and fixed to the inner sidewall of the limiting plate 4. A ball is embedded in the end of the insertion plate 11 near the winding wheel 9. When the limiting plate 4 moves, the roller first abuts against the opening of the insertion slot and squeezes the winding wheel 9 until the top of the insertion plate 11 is inserted into the insertion slot 12, so that the winding wheel 9 is positioned and fixed.

[0026] A mounting plate 13 is provided at one end of the take-up reel 9 near the sliding block 1. Two T-shaped mounting grooves 14 are provided on the side of the mounting plate 13. The sliding block 1 is slidably connected to the mounting groove 14. An electric push rod 16 is fixedly connected to the inner wall of the mounting groove 14. A connecting seat 15 is fixedly connected to the side end of the sliding block 1. A pressure sensor 17 is fixedly connected to the power output end of the electric push rod 16 via bolts. The detection end face of the pressure sensor 17 abuts against the side end of the connecting seat 15. During the testing of the enameled wire, the enameled wire is first wound onto the take-up reel. The enameled wire is evenly wound in the slot 10 on the take-up wheel 9. Then, the take-up wheel 9 is inserted into the connector rod 2. At this time, the compression bolt 7 is rotated, and the compression bolt 7 compresses the limiting sleeve 5. The limiting sleeve 5 moves the limiting plate 4 through the limiting frame 6, compressing and fixing the enameled wire at the upper end of the take-up wheel 9. At this time, the power output end of the electric actuator compresses the connecting seat 15 through the pressure sensor 17, detects the tension of the wound enameled wire, and amplifies the tensile strength of a single enameled wire by a factor of two to ensure the accuracy of the detection results.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tension detection device for anti-tension enameled wire, comprising a sliding block (1), characterized in that: The sliding block (1) is fixedly connected to a plug rod (2) at its side end. A take-up wheel (9) capable of winding and detecting multiple quantities of enameled wire is inserted into the middle of the plug rod (2). The upper and lower ends of the take-up wheel (9) are respectively provided with limiting plates (4) for clamping and fixing the wound enameled wire. A fixing frame (3) for limiting and fixing the take-up wheel (9) is fixedly connected to the middle of the plug rod (2) by bolts. The fixing frame (3) has two limiting sleeves (5) sleeved in the middle, and both ends of the fixing frame (3) are threaded with extrusion bolts (7) that extrude the limiting sleeves (5). The limiting plate (4) has an arc-shaped structure at the end away from the sliding block (1) and a horizontal structure at the end close to the sliding block (1). The inner and outer walls of the limiting plate (4) are both arc-shaped. The limiting plate (4) is located between the limiting sleeve plate (5) and the winding wheel (9). The winding wheel (9) has multiple slots (10) on its side for limiting the enameled wire. The slots (10) are located in the middle of the two limiting plates (4). The winding wheel (9) has a plug-in slot (12) on its side near the sliding block (1).

2. The tension detection device for the tensile-resistant enameled wire according to claim 1, characterized in that: The plug rod (2) has a rectangular structure, and the winding wheel (9) has a rectangular through hole in the middle. The winding wheel (9) is plugged into the plug rod (2) through the through hole.

3. The tension detection device for anti-tension enameled wire according to claim 1, characterized in that: The fixing frame (3) has an I-shaped structure. The two ends of the extrusion bolt (7) pass through the top structure of the fixing frame (3), and the top of the extrusion bolt (7) abuts against the limiting sleeve (5).

4. The tension detection device for anti-tension enameled wire according to claim 1, characterized in that: A compression spring (8) is welded and fixed between the limiting sleeve (5) and the fixing frame (3), and the compression bolt (7) is located in the middle of the compression spring (8).

5. The tension detection device for tensile-resistant enameled wire according to claim 1, characterized in that: A limiting frame (6) is provided between the limiting plate (4) and the limiting sleeve plate (5). The limiting frame (6) is composed of multiple auxiliary plates, and the auxiliary plates, the limiting plate (4), and the limiting sleeve plate (5) form multiple triangular structures.

6. The tension detection device for tensile-resistant enameled wire according to claim 1, characterized in that: The insertion slot (12) is an annular structure, the opening of the insertion slot (12) is a figure-eight shaped structure, and the inner side wall of the insertion slot (12) near the bottom of the slot is a vertical structure.

7. The tension detection device for tensile-resistant enameled wire according to claim 1, characterized in that: A plug plate (11) is welded and fixed on the inner side wall of the limiting plate (4), and a ball is embedded in the end of the plug plate (11) near the winding wheel (9).

8. The tension detection device for tensile-resistant enameled wire according to claim 1, characterized in that: The winding reel (9) is provided with a mounting plate (13) at one end near the sliding block (1). The side end of the mounting plate (13) is provided with two T-shaped mounting grooves (14). The sliding block (1) is slidably connected in the mounting groove (14). An electric push rod (16) is fixedly connected to the inner side wall of the mounting groove (14). A connecting seat (15) is fixedly connected to the side end of the sliding block (1). A pressure sensor (17) is fixedly connected to the power output end of the electric push rod (16) by bolts. The detection end face of the pressure sensor (17) abuts against the side end of the connecting seat (15).

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