A magnetic head sensitivity test

Abstract

The present application relates to the technical field of magnetic head production, and particularly relates to a magnetic head sensitivity test device, which comprises a table top, a lead screw and a supporting rod arranged above the table top, the lead screw is driven to rotate by a conveying motor, a sliding table is further arranged above the table top, a plurality of threaded pipes are fixed on the sliding table, the lead screw passes through the threaded pipes and is threadedly connected with the threaded pipes, a supporting pipe is further fixed on the sliding table, the supporting rod passes through the supporting pipe and is slidably connected with the supporting pipe, a plurality of placing grooves are further arranged on the sliding table, a plurality of jacks are uniformly arranged in the placing grooves, a fixing seat is further fixed on the bottom of one side of the sliding table, a conductive needle electrically connected with the jacks is arranged on the fixing seat, a plurality of test air cylinders are further fixed on the table top, a fixing plate is further arranged on one side of the table top, the piston rods of the test air cylinders are all fixed with the fixing plate, and a positioning plate is further arranged on one side of the fixing plate. The device can realize automatic sensitivity test of the magnetic head.

Description

Technical Field

[0001] This invention relates to the field of magnetic head manufacturing technology, and in particular to a magnetic head sensitivity test. Background Technology

[0002] In the financial sector, banknote detectors are indispensable devices for verifying the authenticity of currency, and their performance directly affects the security and efficiency of currency circulation. The magnetic head, as one of the core components of a banknote detector, is mainly used to read the magnetic characteristics of banknotes, playing a crucial role in verifying their authenticity.

[0003] Before a magnetic head is introduced to the market, it needs to undergo detailed and thorough testing to ensure that its function is correct and its performance meets the standards. The magnetic heads designed by our company undergo a factory test before leaving the factory. The magnetic head is placed in a test socket, and its ability to sense magnetic cards is tested by swiping a card. If this were done manually, it would be inefficient and costly. Long-term manual card swiping is difficult to control in terms of speed, and the hands cannot withstand such repetitive movements for extended periods, severely impacting the testing efficiency of the magnetic head.

[0004] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a magnetic head sensitivity test.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a magnetic head sensitivity test, comprising a platform, a lead screw and a support rod disposed on the platform, the lead screw being driven to rotate by a conveyor motor, a slide table disposed on the platform, multiple threaded tubes fixed on the slide table, the lead screw passing through the threaded tubes and threadedly connected to the threaded tubes, a support tube fixed on the slide table, a support rod passing through the support tube and slidably connected to the support tube, multiple placement slots disposed on the slide table, multiple insertion holes evenly disposed in the placement slots, a fixing seat fixed on one side of the bottom of the slide table, a conductive pin electrically connected to the insertion hole disposed on the fixing seat, multiple test cylinders fixed on the platform, a fixing plate disposed on one side of the platform, the piston rod ends of the test cylinders being fixed to the fixing plate, a positioning plate disposed on one side of the fixing plate, a positioning hole for use with the conductive pins disposed at the upper end of the positioning plate, a rotating shaft disposed on the platform, the rotating shaft being driven to rotate by a rotary motor, multiple cam disks evenly fixed on the rotating shaft, multiple magnetic strips evenly fixed on the surface of the cam disks.

[0008] Preferably, the positioning plate is further fixed with multiple positioning rods, which pass through the fixing plate and are slidably connected to the fixing plate. Each positioning rod has a positioning block fixed at its end, and multiple springs are fixed between the positioning plate and the fixing plate.

[0009] Preferably, each of the placement slots has a through hole penetrating the slide table at its bottom. Lifting cylinders are evenly fixed on the table surface, and a lifting plate is provided on one side of the table surface. The piston rod ends of the lifting cylinders are fixed to the lifting plate, and push rods are fixed at the upper end of the lifting plate corresponding to the through holes. After all the magnetic heads have been tested, the slide table reaches above the lifting plate, and each push rod is aligned with its corresponding through hole. Then, the lifting cylinder is activated, the piston rod on the lifting cylinder extends, and the push rods rise, passing through the through holes and lifting each magnetic head, making it easy to remove the tested magnetic heads.

[0010] Compared with existing technologies, the present invention has the following advantages:

[0011] This device uses a magnetic head to sense information from magnetic strips at different distances, thereby automating the sensitivity testing of the magnetic head. It can test multiple magnetic heads at once, greatly improving the testing efficiency of the magnetic head and reducing the intensity of manual labor. Attached Figure Description

[0012] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention from another angle;

[0015] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0017] In the diagram: 1. Tabletop; 2. Lead screw; 3. Support rod; 4. Conveyor motor; 5. Slide table; 6. Threaded tube; 7. Support tube; 8. Placement slot; 9. Insertion hole; 10. Through hole; 11. Fixing base; 12. Conductive needle; 13. Rotating shaft; 14. Rotary motor; 15. Cam plate; 16. Magnetic strip; 17. Test cylinder; 18. Fixing plate; 19. Positioning plate; 20. Positioning rod; 21. Positioning block; 22. Spring; 23. Positioning hole; 24. Lifting cylinder; 25. Lifting plate; 26. Push rod; Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings: Example

[0019] like Figures 1 to 4 As shown, this embodiment discloses a magnetic head sensitivity test, including a platform 1. A lead screw 2 and a support rod 3 are arranged on the platform 1. The lead screw 2 is driven to rotate by a conveyor motor 4. A slide 5 is also arranged on the platform 1. Multiple threaded tubes 6 are fixed on the slide 5. The lead screw 2 passes through the threaded tubes 6 and is threadedly connected to the threaded tubes 6. A support tube 7 is also fixed on the slide 5. The support rod 3 passes through the support tube 7 and is slidably connected to the support tube 7. Multiple placement slots 8 are also provided on the slide 5. Multiple insertion holes 9 are evenly arranged in the placement slots 8. A fixing seat 11 is also fixed on one side of the bottom of the slide 5. The platform 11 is equipped with a conductive pin 12 that is electrically connected to the socket 9. Multiple test cylinders 17 are also fixed on the platform 1. A fixing plate 18 is also provided on one side of the platform 1. The piston rod ends of the test cylinders 17 are all fixed to the fixing plate 18. A positioning plate 19 is also provided on one side of the fixing plate 18. The upper end of the positioning plate 19 is also provided with a positioning hole 23 that is used in conjunction with the conductive pin 12. A rotating shaft 13 is also provided above the platform 1. The rotating shaft 13 is driven to rotate by a rotary motor 14. Multiple cam disks 15 are evenly fixed on the rotating shaft 13. Multiple magnetic strips 16 are evenly fixed on the surface of the cam disks 15. The magnetic heads to be tested are inserted into the respective placement slots 8, and the pins on the magnetic heads are inserted into the corresponding insertion holes 9. The lead screw 2 is driven to rotate by the conveyor motor 4. When the lead screw 2 rotates, the slide table 5 moves. After the first row of magnetic heads reaches directly below the rotating shaft 13, the test cylinder 17 is activated, and the positioning plate 19 rises. The positioning hole 23 on the positioning plate 19 contacts the conductive pin 12 on the fixed base 11. The conductive pin 12 is inserted into the positioning hole 23 and contacts the probe in the positioning hole 23. The rotating shaft 13 is driven to rotate by the rotating motor 14. The cam disk 15 rotates with the rotating shaft 13. Each magnetic strip 16 on the cam disk 15 passes over the magnetic head in sequence. The magnetic strip 16 forms eddy currents in the magnetic field of the magnetic head. The sensing chip on the magnetic head senses the eddy currents, thereby realizing the purpose of the magnetic head sensing the magnetic strip 16. By sensing the corresponding magnetic strip 16 information, the magnetic head can achieve the purpose of the magnetic head sensing the magnetic strip 16. The magnetic head is now being tested. Due to the cam structure of the cam disk 15, the distance between each magnetic strip 16 and the magnetic head is different after each magnetic strip 16 rotates to its lowest position. The magnetic head senses the information of the magnetic strips 16 at different distances, thereby realizing the sensitivity test of the magnetic head. After one row of magnetic heads is tested, the test cylinder 17 is started. After the conductive needle 12 separates from the positioning hole 23 on the positioning plate 19, the lead screw 2 is driven by the conveying motor 4 to rotate a certain number of revolutions. The next row of magnetic heads reaches the bottom of the rotating shaft 13 again, and the magnetic head is tested again by the magnetic strips 16. The cycle continues. This device realizes the automated sensitivity test of the magnetic head by sensing the information of the magnetic strips 16 at different distances. Moreover, it can test multiple magnetic heads at the same time, which greatly improves the testing efficiency of the magnetic head and reduces the intensity of manual labor. Example

[0020] This embodiment discloses a magnetic head sensitivity test. Based on the structure and principle of embodiment 1, this embodiment also has multiple positioning rods 20 fixed on the positioning plate 19. The positioning rods 20 pass through the fixing plate 18 and are slidably connected to the fixing plate 18. The ends of the positioning rods 20 are all fixed with positioning blocks 21. Multiple springs 22 are also fixed between the positioning plate 19 and the fixing plate 18. Example

[0021] This embodiment discloses a magnetic head sensitivity test. Based on the structure and principle of Embodiment 1 or Embodiment 2, the bottom of the placement slot 8 in this embodiment is provided with a through hole 10 penetrating the slide table 5. Lifting cylinders 24 are uniformly fixed on the table surface 1, and a lifting plate 25 is provided on one side of the table surface 1. The piston rod ends of the lifting cylinders 24 are fixed to the lifting plate 25, and top rods 26 are fixed at the upper end of the lifting plate 25 corresponding to the through holes 10. After all magnetic heads have been tested, the slide table 5 reaches above the lifting plate 25, and each top rod 26 is aligned with its corresponding through hole 10. Then, the lifting cylinder 24 is activated, the piston rod on the lifting cylinder 24 extends, and the top rods 26 rise. After passing through the through holes 10, the top rods 26 lift each magnetic head, making it easy to remove the tested magnetic heads.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic head sensitivity test, characterized in that, The device includes a platform, on which a lead screw and a support rod are mounted. The lead screw is driven to rotate by a conveyor motor. A slide is also mounted on the platform, with multiple threaded tubes fixed thereon. The lead screw passes through and is threadedly connected to the threaded tubes. A support tube is also fixed on the slide, with a support rod passing through and slidably connected to it. Multiple placement slots are also provided on the slide, each containing a plurality of evenly spaced insertion holes. A fixing seat is fixed to one side of the bottom of the slide, with conductive pins electrically connected to the insertion holes mounted on the fixing seat. Multiple test cylinders are also fixed on the platform. A fixing plate is also provided on one side of the platform, with the piston rod ends of each test cylinder fixed to the fixing plate. A positioning plate is also provided on one side of the fixing plate, with positioning holes at its upper end for use with the conductive pins. A rotating shaft is also mounted on the platform, driven to rotate by a rotary motor. Multiple cam discs are evenly fixed on the rotating shaft, with multiple magnetic strips evenly fixed to the surface of each cam disc.

2. The magnetic head sensitivity test according to claim 1, characterized in that: The positioning plate is also fixed with multiple positioning rods, which pass through the fixing plate and are slidably connected to it. Each positioning rod has a positioning block fixed at its end. Multiple springs are also fixed between the positioning plate and the fixing plate.

3. The magnetic head sensitivity test according to claim 1, characterized in that: The bottom of each placement slot is provided with a through hole penetrating the slide table. Lifting cylinders are also evenly fixed on the table surface. A lifting plate is also provided on one side of the table surface. The piston rod ends of the lifting cylinders are all fixed to the lifting plate. A push rod is fixed at the upper end of the lifting plate at the position corresponding to the through hole.

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