Potting type magnetic core magnetic product pulling force test tool

Abstract

The utility model relates to the technical field of drawing force test, and disclose a potting type magnetic core magnetic product drawing force test tool, including device shell still have fixed base and testing mechanism, the bottom fixed connection of device shell has the support leg of support, be provided with testing mechanism on device shell, the top fixed connection of device shell has fixed base, be provided with magnetic core ring body on fixed base, be provided with first connecting rod on magnetic core ring body, first connecting rod's one end is provided with first mounting panel, one end of first threaded rod is connected with the pull ring cover in screw thread. Through the assembly of multiple first connecting rods and make it contact with magnetic core ring body, thus detect from multiple point position, relative to single point force structure, can make detection data more close to the true value, significantly improve the reliability of detection result, and the first connecting rod length makes the first mounting panel away from magnetic core ring body, to more convenient different potting adhesive potting product detection, the staff observes test and tries to pull the state of work.

Description

Technical Field

[0001] This utility model relates to the field of pull-out force testing, and in particular to a tooling for testing the pull-out force of potted magnetic core products. Background Technology

[0002] Due to the combined effects of material properties and potting process parameters, the actual strength of a magnetic core is often a variable that is difficult to assess intuitively. As the usage conditions faced by products vary greatly under different application scenarios, such as temperature fluctuations, mechanical vibrations, and electromagnetic interference, the requirements of these external factors on the performance of the magnetic core also change accordingly. Pull-out tests are commonly used in the industry as a testing method.

[0003] In existing technologies, pull-out testing equipment typically employs fixed clamps and a single-point force application structure, which can only apply pull-out force to specific locations on the magnetic core (such as the center point or end). While this design may meet basic requirements when dealing with small magnetic cores, magnetic core products come in a wide variety of models and sizes. The single-point force application structure is insufficient for longer magnetic core products, directly resulting in serious deviations in quality assessment. When the test point happens to be located in an area with strong pull-out force, the magnetic core may pass the test due to partial compliance, but the pull-out force in its weak areas (such as the middle or stress concentration points) may be far below the design standard. This false impression of partial compliance can create certain hidden dangers in subsequent use. Therefore, it is necessary to improve the pull-out force testing fixture for potted magnetic core products to solve the above problems. Utility Model Content

[0004] To overcome the problem that when testing longer products, some products may pass the test due to partial compliance in single-point force application structures, but this may pose safety hazards during subsequent use.

[0005] The technical solution of this utility model is as follows: a tooling for testing the pull-out force of potted magnetic core products, including a device shell, a fixed base and a testing mechanism. The bottom of the device shell is fixedly connected to a support leg for support. The testing mechanism is provided on the device shell. The top of the device shell is fixedly connected to a fixed base. A magnetic core ring body is provided on the fixed base. A first connecting rod is provided on the magnetic core ring body. A first mounting plate is provided at one end of the first connecting rod. A first fastening nut is threadedly connected to one end of the first connecting rod. A first threaded rod is threadedly connected inside the first mounting plate. A second fastening nut is threadedly connected to the first threaded rod. A third fastening nut is threadedly connected to the first threaded rod. A pull ring sleeve is threadedly connected to one end of the first threaded rod.

[0006] Preferably, the first mounting plate has a through groove inside, and the first connecting rod passes through the through groove and is mounted on the magnetic core ring body.

[0007] Preferably, the fixed base has a rotatably connected bidirectional threaded rod inside, one end of which is fixedly connected to a first knob. A sliding seat is threaded onto the bidirectional threaded rod, a first limiting block is fixedly connected to the sliding seat, and a fixed cylinder is fixedly connected to the sliding seat. A second threaded rod is rotatably connected inside the fixed cylinder, one end of which is fixedly connected to a second knob. A first sliding shaft is threaded onto the second threaded rod and slidably connected inside the fixed cylinder. A first rotating shaft is rotatably connected inside the first sliding shaft, and a guide rod is fixedly connected to the first rotating shaft. The guide rod is slidably connected inside the fixed cylinder, and one end of the guide rod is fixedly connected to a second limiting block.

[0008] Preferably, the fixed seat has a groove at the relative position of the sliding seat, and the sliding seat is slidably connected inside the groove.

[0009] Preferably, the fixed cylinder has a groove at a position relative to the first sliding shaft, and the first sliding shaft is slidably connected inside the groove.

[0010] Preferably, the fixed cylinder has a guide groove at the relative position of the guide rod, and the guide rod is slidably connected inside the guide groove.

[0011] Preferably, the testing mechanism includes a first motor, which is fixedly connected inside the device housing. A third threaded rod is fixedly connected to the output end of the first motor and rotatably connected inside the device housing. A sprocket is fixedly connected to the outside of the third threaded rod, and a chain is driven through the sprocket. A fixed bracket is fixedly connected to the top of the device housing. A sliding plate is threadedly connected to the third threaded rod and slidably connected inside the fixed bracket. A fixed frame is fixedly connected to the sliding plate, and a limit block is fixedly connected to the fixed frame. A tensile tester body is provided on the front of the fixed frame, and a connecting block is fixedly connected to the tensile tester body, which engages with the limit block inside.

[0012] The beneficial effects of this utility model are as follows: By assembling multiple first connecting rods and making them contact the magnetic core ring body, detection can be performed from multiple points. Compared with a single-point force application structure, the detection data can be closer to the true value, significantly improving the reliability of the detection results. In addition, the length of the first connecting rods themselves allows the first mounting plate to be far away from the magnetic core ring body, making it easier for staff to observe the pull-out state when testing products potted with different potting compounds. This avoids the problem that with a single-point force application structure, when testing longer products, some products may pass the test due to partial compliance, which could pose a safety hazard in subsequent use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2This is a cross-sectional view of the outer casing of the device of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the fixing base and its connected components of this utility model;

[0016] Figure 4 This is a schematic diagram of the first mounting plate and its connected components of the present invention;

[0017] Figure 5 This is a cross-sectional view of the fixed cylinder structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the testing mechanism structure of this utility model;

[0019] Figure 7 This is an exploded structural diagram of the tensile testing instrument body and its connected components.

[0020] Explanation of reference numerals in the attached drawings: 1. Device housing; 4. Support leg; 21. Fixed base; 22. Magnetic core ring body; 23. First connecting rod; 24. First mounting plate; 25. First fastening nut; 26. First threaded rod; 27. Second fastening nut; 28. Third fastening nut; 29. ​​Pull ring sleeve; 210. Bidirectional threaded rod; 211. First knob; 212. Sliding seat; 213. First limiting block; 214. Fixed cylinder; 215. Second threaded rod; 216. Second knob; 217. First sliding shaft; 218. First rotating shaft; 219. Guide rod; 220. Second limiting block; 31. First motor; 32. Third threaded rod; 33. Sprocket; 34. Chain; 35. Fixed bracket; 36. Sliding plate; 37. Fixed frame; 38. Limiting block; 39. Tensile tester body; 310. Connecting block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 6This utility model provides an embodiment: The technical solution of this utility model is: a tooling for testing the pull-out force of potted magnetic core products, including a device housing 1, a fixed base 21, and a testing mechanism. A support leg 4 is fixedly connected to the bottom of the device housing 1. The testing mechanism is mounted on the device housing 1. A fixed base 21 is fixedly connected to the top of the device housing 1. A magnetic core ring body 22 is mounted on the fixed base 21. A first connecting rod 23 is mounted on the magnetic core ring body 22. A first mounting plate 24 is mounted on one end of the first connecting rod 23. A first fastening nut 25 is threadedly connected to one end of the first connecting rod 23. A first threaded rod 26 is threadedly connected internally to the first mounting plate 24. A second fastening nut 27 is threaded onto the threaded rod 26, and a third fastening nut 28 is threaded onto the first threaded rod 26. A pull ring sleeve 29 is threaded onto one end of the first threaded rod 26. During use, different first mounting plates 24 are selected based on the size of the product being tested. After passing the first connecting rod 23 through the through hole of the first mounting plate 24, the first fastening nut 25 is threaded onto the outside of the first connecting rod 23 to limit its movement. Then, the first threaded rod 26 is threaded onto the inside of the first mounting plate 24. Finally, the second fastening nut 27 and the third fastening nut 28 are threaded onto the outside of the first threaded rod 26, one above the other. The first connecting rod 23 is then attached to the... After applying potting compound to the upper end face of the magnetic core ring body 22, the first connecting rod 23 is applied between the magnetic core ring body 22 and the first connecting rod 23. The upper limit of the tensile force of the product is then tested by pulling the pull ring sleeve 29 using a testing mechanism. A through groove is provided inside the first mounting plate 24, through which the first connecting rod 23 passes and is mounted on the magnetic core ring body 22. After the four first connecting rods 23 pass through the first mounting plate 24, their positions are fixed by the first fastening nut 25. During testing, the magnetic core ring body 22 is pulled simultaneously from four points, making the magnetic core ring body 22 more stable under force. Testing multiple points increases the accuracy of the final test and avoids the undetected partial defects of some components. Upon inspection, a bidirectional threaded rod 210 is rotatably connected inside the fixed base 21. A first knob 211 is fixedly connected to one end of the bidirectional threaded rod 210. A sliding seat 212 is threaded onto the bidirectional threaded rod 210. A first limiting block 213 is fixedly connected to the sliding seat 212. A fixed cylinder 214 is fixedly connected to the sliding seat 212. A second threaded rod 215 is rotatably connected inside the fixed cylinder 214. A second knob 216 is fixedly connected to one end of the second threaded rod 215. A first sliding shaft 217 is threaded onto the second threaded rod 215 and slidably connected inside the fixed cylinder 214. A first rotating shaft 218 is rotatably connected inside the first sliding shaft 217. A guide rod 219 is fixedly connected to the first rotating shaft 218 and slidably connected inside the fixed cylinder 214. A second limiting block 220 is fixedly connected to one end of the guide rod 219.The magnetic core ring body 22 is clamped and restricted from two directions by the first limiting block 213 and the second limiting block 220, thereby preventing the magnetic core ring body 22 from moving during testing and affecting the accuracy of the test. The fixed base 21 has a groove at the relative position of the sliding base 212, and the sliding base 212 is slidably connected inside the groove. The sliding of the sliding base 212 is restricted by the groove, so that the sliding base 212 slides linearly inside the fixed base 21, preventing the sliding base 212 from tilting and affecting the restriction of the magnetic core ring body 22 by the first limiting block 213 and the second limiting block 220. The fixed cylinder 214 is opened at the relative position of the first sliding shaft 217. The device has a sliding groove, and the first sliding shaft 217 is slidably connected inside the groove. The groove restricts the sliding of the first sliding shaft 217, preventing it from detaching from the fixed cylinder 214 or tilting during sliding, which would affect the position of the second limiting block 220. The fixed cylinder 214 has a guide groove at the relative position of the guide rod 219, and the guide rod 219 is slidably connected inside the guide groove. The guide groove guides the guide rod 219. After the inspection is completed, when the magnetic core ring body 22 is removed, the guide rod 219, guided by the guide groove, causes the second limiting block 220 to rotate to both sides, thus facilitating the removal of the magnetic core ring body 22 by the operator.

[0023] Please see Figure 2 , Figure 7 In this embodiment, the testing mechanism includes a first motor 31, which is fixedly connected inside the device housing 1. A third threaded rod 32 is fixedly connected to the output end of the first motor 31. The third threaded rod 32 is rotatably connected inside the device housing 1. A sprocket 33 is fixedly connected to the outside of the third threaded rod 32. A chain 34 is drivenly connected to the sprocket 33. A fixed bracket 35 is fixedly connected to the top of the device housing 1. A sliding plate 36 is threadedly connected to the third threaded rod 32. The sliding plate 36 is slidably connected inside the fixed bracket 35. A fixed frame 37 is fixedly connected to the sliding plate 36. A limit block 38 is fixedly connected to the fixed frame 37. A tensile tester body 39 is provided on the front of the fixed frame 37. A connecting block 310 is fixedly connected to the tensile tester body 39. The connecting block 310 is snapped into the inside of the limit block 38. The tensile tester body 39 is restricted by the snapping of the limit block 38 and the connecting block 310, making it more convenient to pick up later and increasing the overall practicality.

[0024] During operation, after placing the magnetic core ring body 22 on the upper surface of the fixed base 21, rotating the first knob 211 drives the bidirectional threaded rod 210 to rotate. When the bidirectional threaded rod 210 rotates, it causes the sliding seat 212 to slide inside the fixed base 21. As the sliding seat 212 slides, it causes a limiting block 213 to contact the front and rear sides of the magnetic core ring body 22, thus initially restricting the magnetic core ring body 22. Rotating the second knob 216 drives the second threaded rod 215 to rotate. When the second threaded rod 215 rotates, it causes the first sliding shaft 217 to slide inside the fixed cylinder 214. As the first sliding shaft 217 slides, it causes the first rotating shaft 218, guide rod 219, and second limiting block 220 to move. After the second limiting block 220 contacts the upper surface of the magnetic core ring body 22, it fully restricts the movement of the magnetic core ring body 22. Depending on the size of the product being tested, different first safety devices are selected. After mounting plate 24, the first connecting rod 23 is passed through the through hole of the first mounting plate 24. The first fastening nut 25 is then threaded onto the outside of the first connecting rod 23 to limit its movement. The first threaded rod 26 is then threaded onto the inside of the first mounting plate 24. The second fastening nut 27 and the third fastening nut 28 are then threaded onto the outside of the first threaded rod 26, one above the other. The first connecting rod 23 is then attached to the upper surface of the magnetic core ring body 22. Encapsulating adhesive is then applied between the first connecting rod 23 and the magnetic core ring body 22. The pull ring sleeve 29 is then suspended from the hook of the tensile tester body 39. The first motor 31 operates, and the sprocket 33 and chain 34 work together to drive the third threaded rods 32 on both sides to rotate synchronously. When the third threaded rods 32 rotate, they drive the sliding plate 36 to slide steadily, thereby moving the tensile tester body 39 upward to detect the value.

[0025] By assembling multiple first connecting rods 23 and bringing them into contact with the magnetic core ring body 22 through the above steps, multiple points can be tested to solve the problem that when a single-point force structure is used to test longer products, some products may pass the test due to partial compliance, which may pose a safety hazard in subsequent use.

Claims

1. A tooling for testing the pull-out force of encapsulated magnetic core products, comprising a housing (1), characterized in that: It also includes a fixed base (21) and a testing mechanism. The bottom of the device housing (1) is fixedly connected to a support leg (4). The testing mechanism is provided on the device housing (1). The top of the device housing (1) is fixedly connected to a fixed base (21). The fixed base (21) is provided with a magnetic core ring body (22). The magnetic core ring body (22) is provided with a first connecting rod (23). One end of the first connecting rod (23) is provided with a first mounting plate (24). One end of the first connecting rod (23) is threadedly connected to a first fastening nut (25). The inside of the first mounting plate (24) is threadedly connected to a first threaded rod (26). The first threaded rod (26) is threadedly connected to a second fastening nut (27). The first threaded rod (26) is threadedly connected to a third fastening nut (28). One end of the first threaded rod (26) is threadedly connected to a pull ring sleeve (29).

2. The tooling for testing the pull-out force of potted magnetic core products according to claim 1, characterized in that: The first mounting plate (24) has a through groove inside, and the first connecting rod (23) passes through the through groove and is mounted on the magnetic core ring body (22).

3. The tooling for testing the pull-out force of potted magnetic core products according to claim 1, characterized in that: The fixed base (21) is internally rotatably connected to a bidirectional threaded rod (210). One end of the bidirectional threaded rod (210) is fixedly connected to a first knob (211). A sliding seat (212) is threaded onto the bidirectional threaded rod (210). A first limiting block (213) is fixedly connected onto the sliding seat (212). A fixed cylinder (214) is fixedly connected onto the sliding seat (212). The fixed cylinder (214) is internally rotatably connected to a second threaded rod (215). One end of the second threaded rod (215) is fixedly connected to a second knob (216). A first sliding shaft (217) is threaded onto the second threaded rod (215). The first sliding shaft (217) is slidably connected inside the fixed cylinder (214). A first rotating shaft (218) is rotatably connected inside the first sliding shaft (217). A guide rod (219) is fixedly connected to the first rotating shaft (218). The guide rod (219) is slidably connected inside the fixed cylinder (214). A second limiting block (220) is fixedly connected to one end of the guide rod (219).

4. The pull-out force testing fixture for potted magnetic core products according to claim 3, characterized in that: The fixed seat (21) has a groove at the opposite position of the sliding seat (212), and the sliding seat (212) is slidably connected inside the groove.

5. The pull-out force testing fixture for potted magnetic core products according to claim 3, characterized in that: The fixed cylinder (214) has a groove at a position relative to the first sliding shaft (217), and the first sliding shaft (217) is slidably connected inside the groove.

6. The pull-out force testing fixture for potted magnetic core products according to claim 3, characterized in that: The fixed cylinder (214) has a guide groove at the relative position of the guide rod (219), and the guide rod (219) is slidably connected inside the guide groove.

7. The pull-out force testing fixture for potted magnetic core products according to claim 1, characterized in that: The testing mechanism includes a first motor (31), which is fixedly connected inside the device housing (1). The output end of the first motor (31) is fixedly connected to a third threaded rod (32), which is rotatably connected inside the device housing (1). A sprocket (33) is fixedly connected to the outside of the third threaded rod (32), and a chain (34) is driven on the sprocket (33). A fixed bracket (35) is fixedly connected to the top of the device housing (1). A sliding plate (36) is threadedly connected to the third threaded rod (32), and the sliding plate (36) is slidably connected inside the fixed bracket (35). A fixed frame (37) is fixedly connected to the sliding plate (36), and a limit block (38) is fixedly connected to the fixed frame (37). A tensile tester body (39) is provided on the front of the fixed frame (37), and a connecting block (310) is fixedly connected to the tensile tester body (39). The connecting block (310) is snapped into the inside of the limit block (38).

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