Electromagnetic pin puller test device

Abstract

The present invention discloses an electromagnetic pin puller testing device, comprising a base and a turntable, wherein the turntable is mounted on the base through its central axis and can rotate freely, and one side of the turntable has a first fan-shaped notch, and the other side of the turntable has a second fan-shaped notch; a positioning pin is arranged at the upper end of the base, and a torsion spring is sleeved on the central axis, the torsion spring is located in the second fan-shaped notch and one end of the torsion spring is inserted on the positioning pin, and the other end abuts against the side wall of the second fan-shaped notch; the electromagnetic pin puller is vertically inserted on the base and the pin thereon extends from the upper end of the base and abuts against the side wall of the first fan-shaped notch; the testing device is suitable for the pin pulling force and life test of the electromagnetic pin puller, and is also suitable for the electromagnetic force and life test of contactors, electromagnets, etc.

Description

Technical Field

[0001] The invention belongs to the technical field of electromagnetic force testing of electronic components, and in particular relates to an electromagnetic pin puller testing device. Background Art

[0002] According to the test requirements of the electromagnetic pin puller test project, the pin pulling force and life of the pins in the electromagnetic pin puller need to be tested. Since the pin pulling force applied to this type of electromagnetic pin puller is a radial force (that is, the direction of the force is perpendicular to the direction of pin movement), there is currently no dedicated device or alternative device to perform pin pulling force and life tests, which cannot meet the testing needs during product development. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides an electromagnetic pin puller testing device. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0004] A testing device for an electromagnetic pin puller comprises a base and a turntable, wherein the turntable is mounted on the base via its central axis and can rotate freely, and one side of the turntable has a first fan-shaped notch, and the other side of the turntable has a second fan-shaped notch; a positioning pin is provided at the upper end of the base, and a torsion spring is mounted on the central axis, the torsion spring is located in the second fan-shaped notch and one end of the torsion spring is inserted into the positioning pin, and the other end abuts against the side wall of the second fan-shaped notch; the electromagnetic pin puller is vertically inserted into the base and the pin thereon extends from the upper end of the base and abuts against the side wall of the first fan-shaped notch.

[0005] Furthermore, the turntable is composed of a turntable body and a cover plate, the turntable body has a through hole in the center, and has a first fan-shaped notch and a second fan-shaped notch on both sides; the cover plate is fixed to the upper end of the turntable body, and one side of the cover plate has a third fan-shaped notch arranged opposite to the first fan-shaped notch, and a hollow shaft under the cover plate passes through the through hole in the center of the turntable body, the center shaft passes through the hollow shaft and is installed on the bearing in the center of the base, and the torsion spring is sleeved on the hollow shaft.

[0006] Furthermore, the base is composed of a base body and a first support plate, and the positioning pin is inserted on the upper end surface of the base body; the base body has a first mounting hole in the center, the bearing is installed on the upper part of the first mounting hole, the side of the base body has a rectangular groove, and the top of the rectangular groove has a second mounting hole adapted to the electromagnetic pin puller; the first support plate has a circular boss adapted to the first mounting hole in the center, and the side of the first support plate has a rectangular boss; the base body is arranged on the first support plate, and the electromagnetic pin puller is inserted in the second mounting hole, and the circular boss is inserted into the bottom of the first mounting hole, and the rectangular boss is inserted into the rectangular groove, so that the bottom of the electromagnetic pin puller is located on the rectangular boss, and the pin on it extends from the upper end of the second mounting hole.

[0007] Furthermore, at least two positioning pin holes are arranged on the upper end surface of the base body, and the positioning pin is inserted into one of the positioning pin holes.

[0008] Furthermore, it also includes a pull rod, an electromagnet, a second support plate and a third support plate, the first support plate and the third support plate are respectively fixed on the second support plate, and the electromagnet is fixed on the third support plate; one end of the pull rod is fixedly connected to the electromagnet, and the other end is "L"-shaped and extends into the first fan-shaped notch, and is located outside the pin of the electromagnetic pin puller. The pull rod can be pulled by the electromagnet, and the pull rod pulls the turntable to rotate through the "L"-shaped end.

[0009] Beneficial effects of the present invention:

[0010] 1. The testing device of the present invention is equipped with a torsion spring inside, and the torque can be adjusted according to the use requirements to ensure that the pin pulling force meets the specified requirements, and the turntable can be automatically rotated to apply force. It has a compact structure, stable force application, high transmission efficiency, and simple assembly;

[0011] 2. The electromagnet of the test device of the present invention drives the pull rod to pull the turntable to realize automatic opening and resetting. The action sequence can be controlled according to the use requirements and the action is continuous. It is suitable for the pin pulling force and life test of the electromagnetic pin puller, and is also suitable for the electromagnetic force and life test of contactors, electromagnets, etc.

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the test device for testing the pin pulling force;

[0014] Figure 2 A schematic diagram of the structure of the other side of the test device for the pin pulling force test;

[0015] Figure 3 Exploded view of the test device for pin extraction force test;

[0016] Figure 4 It is a working schematic diagram of the electromagnetic pin puller coil in a non-excited state;

[0017] Figure 5 A schematic diagram of an electromagnetic pin puller being subjected to a lateral pin pulling force;

[0018] Figure 6 This is a working schematic diagram of the electromagnetic pin puller coil in an energized state;

[0019] Figure 7 A schematic diagram of the structure of the test device for life test;

[0020] Figure 8 This is a working schematic diagram of the test device at station 1 for life test;

[0021] Fig. 9 This is a working schematic diagram of the test device at workstation 2 for life test;

[0022] Fig.10 This is a working schematic diagram of the test device at workstation 3 for life test;

[0023] Fig.11 This is a working schematic diagram of the test device at workstation 4 for life test.

[0024] Description of reference numerals:

[0025] 1-base; 2-turntable; 3-center axis; 4-first fan-shaped notch; 5-second fan-shaped notch; 6-locating pin; 7-torsion spring; 8-electromagnetic pin puller; 9-third fan-shaped notch; 10-bearing; 11-locating pin hole; 12-gasket; 13-pull rod; 14-electromagnet; 15-second support plate; 16-third support plate; 1-1-base body; 1-2-first support plate; 2-1-turntable body; 2-2-cover plate; 1-1-1-first mounting hole; 1-1-2-rectangular groove; 1-1-3-second mounting hole; 1-2-1-circular boss; 1-2-2-rectangular boss; 2-2-1-hollow shaft. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto. Example

[0027] See also Figure 1~Figure 4The embodiment of the present invention provides an electromagnetic pin puller testing device, which is suitable for testing the pin pulling force of the electromagnetic pin puller, and specifically includes a base 1 and a turntable 2. The turntable 2 is installed on the base 1 through its central axis 3 and can rotate freely, and one side of the turntable 2 has a first fan-shaped notch 4, and the other side of the turntable 2 has a second fan-shaped notch 5; a positioning pin 6 is provided at the upper end of the base 1, and a torsion spring 7 is mounted on the central axis 3. The torsion spring 7 is located in the second fan-shaped notch 5 and one end of the torsion spring 7 is inserted on the positioning pin 6, and the other end abuts against the side wall of the second fan-shaped notch 5; the distance between the positioning pin 6 and the side wall of the second fan-shaped notch 5 determines the torque of the torsion spring 7.

[0028] The electromagnetic pin puller 8 is vertically inserted on the base 1 and the pins thereon extend from the upper end of the base 1 and abut against the side wall of the first sector-shaped notch 4 .

[0029] Furthermore, the turntable 2 is composed of a turntable body 2-1 and a cover plate 2-2. The turntable body 2-1 has a through hole in the center and has a first fan-shaped notch 4 and a second fan-shaped notch 5 on both sides; the cover plate 2-2 is fixed to the upper end of the turntable body 2-1, and one side of the cover plate 2-2 has a third fan-shaped notch 9 arranged opposite to the first fan-shaped notch 4, and a hollow shaft 2-2-1 below the cover plate 2-2 passes through the through hole in the center of the turntable body 2-1, and the central shaft 3 passes through the hollow shaft 2-2-1 and is installed on the bearing 10 in the center of the base 1, and the torsion spring 7 is mounted on the hollow shaft 2-2-1.

[0030] Furthermore, the base 1 is composed of a base body 1-1 and a first support plate 1-2, and the positioning pin 6 is inserted on the upper end surface of the base body 1-1; the center of the base body 1-1 has a first mounting hole 1-1-1, and the bearing 10 is installed on the upper part of the first mounting hole 1-1-1. The side of the base body 1-1 has a rectangular groove 1-1-2, and the top of the rectangular groove 1-1-2 has a second mounting hole 1-1-3 adapted to the electromagnetic pin puller 8; the center of the first support plate 1-2 has a second mounting hole 1-1-3 adapted to the first mounting hole 1-1- 1, the side of the first support plate 1-2 has a rectangular boss 1-2-2; the base body 1-1 is set on the first support plate 1-2, the electromagnetic pin puller is inserted into the second mounting hole 1-1-3, and the circular boss 1-2-1 is inserted into the bottom of the first mounting hole 1-1-1, and the rectangular boss 1-2-2 is inserted into the rectangular groove 1-1-2, so that the bottom of the electromagnetic pin puller 8 is located on the rectangular boss 1-2-2, and the pin on it extends from the upper end of the second mounting hole 1-1-3.

[0031] Furthermore, at least two positioning pin holes 11 are provided on the upper end surface of the base body 1-1, and the positioning pin 6 is inserted into one of the positioning pin holes 11, so that according to different pin pulling force requirements of the electromagnetic pin puller 8, the distance between the positioning pin 6 and the side wall of the second fan-shaped notch 5 can be adjusted, thereby adjusting the torsion of the torsion spring 7 to ensure that the pin pulling force meets the specified requirements.

[0032] Furthermore, the pin pulling force testing device also includes a gasket 12, which is located between the hollow shaft 2-2-1 under the cover plate 2-2 and the rotor of the bearing 10, so that the torsion spring 7 can be more flexible when driving the turntable 2 to rotate.

[0033] Install the electromagnetic pin puller 8 into the second mounting hole 1-1-3 on the base body 1-1, and then place it on the first support plate 1-2. When the coil of the electromagnetic pin puller 8 is not excited, the pin of the electromagnetic pin puller 8 is in an extended state and is tightly attached to the side wall of the first fan-shaped notch 4 of the turntable body 2-1. The turntable 2 is limited by the central axis 3 and is freely rotated on the bearing 10. The torsion spring 7 is sleeved on the hollow shaft 2-2-1 of the cover plate 2-2, one end of which is inserted into the hole of the positioning pin 6, and the other end is tightly attached to the side wall of the second fan-shaped notch 5 of the turntable body 2-1, providing the turntable 2 with a lateral pin pulling force on the pin of the electromagnetic pin puller 8. Please refer to Figure 5~Figure 6 When the electromagnetic pin puller coil is excited according to the specified parameters, the pin retracts to overcome the lateral pin pulling force, which proves that the electromagnetic pin puller 8 works normally; when the pin does not retract, it proves that the electromagnetic pin puller 8 has a fault. Example

[0034] See also Figure 7 The embodiment of the present invention provides an electromagnetic pin puller test device, which is suitable for testing the life of the electromagnetic pin puller, and specifically includes the pin pulling force test device described in Example 1, and also includes a pull rod 13, an electromagnet 14, a second support plate 15 and a third support plate 16; the first support plate 1-2 and the third support plate 16 are fixed on the second support plate 15, and the electromagnet is fixed on the third support plate 16; one end of the pull rod 13 is fixed to the center of one side of the electromagnet 14, and the other end is "L"-shaped and extends into the first fan-shaped notch 4 of the pin pulling force test device, and is located outside the pin of the electromagnetic pin puller 8, and the pull rod 13 can be pulled by the electromagnet 14, and the pull rod 13 pulls the turntable 2 to rotate through the "L"-shaped end. After the electromagnet 14 is energized, the pull rod 13 pulls the turntable 2 on the base 1 to rotate under the action of the electromagnet 14; the turntable 2 can be automatically opened and reset through the electromagnet 14 and the pull rod 13.

[0035] In the initial state of the electromagnetic pin puller 8 life test, the electromagnetic pin puller 8 and the electromagnet 14 are both in a non-excited state. At this time, the pin of the electromagnetic pin puller 8 is in an extended state, and the turntable 2 applies a specified lateral pin pulling force to the pin under the action of the torsion spring 7. At this time, the test device is in Figure 8 Status shown.

[0036] Then, after applying the specified parameter excitation to the electromagnetic pin puller 8, the pin overcomes the lateral pin pulling force and retracts. The turntable 2 rotates counterclockwise under the push of the torsion spring 7 until it is blocked by the pull rod 13. At this time, the test device is in the state as follows: Fig. 9 Status shown.

[0037] Then, the electromagnet 14 is stimulated to make the pull rod 13 drive the turntable 2 to rotate clockwise. At this time, the test device is in the state as follows: Fig.10 Status shown.

[0038] Then the electromagnetic pin puller 8 is de-energized, the pin pops out and resets, and the test device is in the state as follows: Fig.11 Status shown.

[0039] The electromagnet 14 is de-energized, so that the pull rod 13 and the turntable 2 are reset and return to Figure 8 The initial state shown completes one working cycle.

[0040] Then the device is used to perform multiple working cycles to test whether the service life of the electromagnetic pin puller 8 meets the requirements.

[0041] In the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0042] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An electromagnetic pin puller testing device, characterized in that: The invention comprises a base and a turntable, wherein the turntable is mounted on the base through its central axis and can rotate freely, and one side of the turntable has a first fan-shaped notch, and the other side of the turntable has a second fan-shaped notch; the turntable is composed of a turntable body and a cover plate, the center of the turntable body has a through hole, and the two sides have the first fan-shaped notch and the second fan-shaped notch respectively; the cover plate is fixed to the upper end of the turntable body, one side of the cover plate has a third fan-shaped notch arranged opposite to the first fan-shaped notch, and a hollow shaft provided below the cover plate passes through the through hole provided in the center of the turntable body, the central axis passes through the hollow shaft and is mounted on a bearing in the center of the base, and a torsion spring is mounted on the hollow shaft; a locating pin is provided at the upper end of the base, the torsion spring is located in the second fan-shaped notch and one end of the torsion spring is inserted on the locating pin, and the other end abuts on the side wall of the second fan-shaped notch; the electromagnetic pin puller is vertically inserted on the base and the pin thereon extends out from the upper end of the base and abuts on the side wall of the first fan-shaped notch.

2. The electromagnetic pin puller testing device according to claim 1, characterized in that: The base is composed of a base body and a first support plate, and the positioning pin is inserted on the upper end surface of the base body; a first mounting hole is provided in the center of the base body, the bearing is installed on the upper part of the first mounting hole, the side of the base body has a rectangular groove, and the top of the rectangular groove has a second mounting hole adapted to the electromagnetic pin puller; a circular boss adapted to the first mounting hole is provided in the center of the first support plate, and a rectangular boss is provided on the side of the first support plate; the base body is arranged on the first support plate, and the electromagnetic pin puller is inserted in the second mounting hole, and the circular boss is inserted into the bottom of the first mounting hole, and the rectangular boss is inserted into the rectangular groove, so that the bottom of the electromagnetic pin puller is located on the rectangular boss, and the pin on it extends from the upper end of the second mounting hole.

3. The electromagnetic pin puller testing device according to claim 2, characterized in that: At least two positioning pin holes are arranged on the upper end surface of the base body, and the positioning pin is inserted into one of the positioning pin holes.

4. The electromagnetic pin puller testing device according to claim 3, characterized in that: It also includes a pull rod, an electromagnet, a second support plate and a third support plate, wherein the first support plate and the third support plate are respectively fixed on the second support plate, and the electromagnet is fixed on the third support plate; one end of the pull rod is fixedly connected to the electromagnet, and the other end is "L"-shaped and extends into the first fan-shaped notch, and is located outside the pin of the electromagnetic pin puller. The pull rod can be pulled by the electromagnet, and the pull rod pulls the turntable to rotate through the "L"-shaped end.

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