Circuit board testing equipment

Abstract

The utility model discloses circuit board testing equipment, which comprises a base, a mounting frame, a lower plate assembly, an upper plate assembly, a control device, a first driving device and a second driving device, the mounting frame is arranged on the base, the upper plate assembly is arranged on the mounting frame in a lifting and sliding mode and driven by the first driving device to ascend and descend, and the lower plate assembly is horizontally arranged on the base in a sliding mode and driven by the second driving device to slide. The upper plate assembly comprises an upper substrate, a plurality of permanent magnets, a plurality of electromagnets, a test plate and a ferromagnetic metal plate, the permanent magnets and the electromagnets are fixedly arranged at the bottom end of the upper substrate, and the ferromagnetic metal plate is fixedly arranged at the top end of the test plate and can be attracted with the permanent magnets and the electromagnets; the electromagnet, the first driving device and the second driving device are all electrically connected with the control device. The utility model has the advantages that the test board and the upper substrate can be more quickly and conveniently disassembled and assembled by attracting and fixing the ferromagnetic metal plate, the permanent magnet and the electromagnet.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, and in particular to a circuit board testing device. Background Technology

[0002] Circuit boards are important electronic components, serving as the support for electronic devices and providing electrical connections. Because they are manufactured using electronic printing techniques, they are called "printed" circuit boards. After production, PCBs undergo a series of tests using circuit board testing equipment to ensure their quality meets standards.

[0003] Existing circuit board testing equipment includes a base, control device, guide rails, lower board assembly, upper board assembly, gantry bracket, first drive device, and second drive device. The upper board assembly includes an upper substrate and a test board. Pressing pins are fixed on the test board. The upper substrate is fixedly mounted on the first drive device, and the test board is detachably mounted on the bottom of the upper substrate. Currently, the test board and upper substrate are typically fixed together using bolts. When different circuit boards need to be tested, the corresponding test board needs to be replaced. Therefore, the disassembly and assembly of the test board and upper substrate is frequent, but the existing method is inconvenient and time-consuming. Improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a circuit board testing device that allows for quick and convenient disassembly and installation between the test board and the upper substrate.

[0005] This utility model proposes a circuit board testing device, including a base, a mounting frame, a lower board assembly, an upper board assembly, a control device, a first driving device, and a second driving device. The mounting frame is disposed on the base, and the upper board assembly is slidably mounted on the mounting frame and driven to rise and fall by the first driving device. The lower board assembly is slidably mounted on the base and driven to slide by the second driving device. The upper board assembly includes an upper substrate, a plurality of permanent magnets, a plurality of electromagnets, a plurality of test boards, and a plurality of ferromagnetic metal plates. The plurality of permanent magnets and electromagnets are fixedly disposed at the bottom end of the upper substrate, and each of the ferromagnetic metal plates is fixedly disposed at the top end of the test boards and can be attracted to the permanent magnets and electromagnets. The electromagnets, the first driving device, and the second driving device are all electrically connected to the control device.

[0006] Preferably, a pad is fixedly provided at the bottom end of the upper substrate, and a plurality of mounting holes are formed through the pad. A plurality of permanent magnets and a plurality of electromagnets are inserted into the mounting holes and fixed to the upper substrate.

[0007] Preferably, the ferromagnetic metal plate is provided with a plurality of positioning posts, and the pad is provided with a plurality of positioning holes, the positioning posts being inserted into the positioning holes.

[0008] Preferably, a pair of guide posts are vertically fixed on the base, a pair of guide holes are formed in the pad, a guide sleeve is fixedly installed in the guide hole, the guide posts pass through the guide sleeve, and the pad and guide sleeve move up and down along the guide posts.

[0009] Preferably, the surface of the pad is provided with a guide groove, the guide hole is located at the center of the guide groove, the vertical cross section of the guide sleeve is T-shaped and is composed of a guide part and a fixing part, the fixing part is located at the top of the guide part and is fitted into the guide groove and fixed to the pad by bolts.

[0010] Preferably, the first driving device is a slide cylinder, which is vertically fixed on the mounting frame, and the slide end of the slide cylinder is fixed to the upper base plate.

[0011] Preferably, the second driving device is a pen-shaped cylinder, the base is provided with a slide rail, the bottom end of the lower plate assembly is provided with a slider, and the slider is engaged and slidably disposed on the slide rail.

[0012] Preferably, the ferromagnetic metal plate is made of iron.

[0013] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0014] 1. The test board and the upper substrate are fixed together by a ferromagnetic metal plate and a permanent magnet, which makes the disassembly and installation of the test board and the upper substrate faster and more convenient.

[0015] 2. When the first driving device drives the upper plate assembly to descend, the electromagnet is energized, so that the electromagnet and the permanent magnet are attracted and fixed to the ferromagnetic metal plate together, thereby making the test plate more firmly fixed by the ferromagnetic metal plate, so as to prevent the test plate and the ferromagnetic metal plate from detaching due to inertia during the descent.

[0016] 3. Several positioning posts are provided on the ferromagnetic metal plate, and several positioning holes are formed in the pad plate accordingly. The positioning posts are inserted into the positioning holes, so that the test board can be accurately installed at the bottom of the upper substrate to enable accurate testing of the circuit board. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a circuit board testing device according to an embodiment;

[0018] Figure 2 This is a schematic diagram of the lower plate assembly and the second drive device in the embodiment;

[0019] Figure 3 This is a partial structural schematic diagram of the first driving device and guide column in the embodiment;

[0020] Figure 4 This is a structural schematic diagram of the upper plate assembly in the embodiment;

[0021] Figure 5 This is a schematic diagram of the structure of the pad in the embodiment;

[0022] Figure 6 This is a schematic diagram of the installation of the permanent magnet and electromagnet in an embodiment;

[0023] Figure 7 This is a cross-sectional view of the pad, permanent magnet, and electromagnet in the embodiment;

[0024] Figure 8 This is a schematic diagram of the structure of the ferromagnetic metal plate, positioning post, and test plate in the embodiment.

[0025] Figure 9 This is a schematic diagram of the guide hole and guide groove in the embodiment;

[0026] Figure 10 This is a schematic diagram of the guide sleeve in an embodiment.

[0027] Reference numerals: 1. Base; 11. Slide rail; 12. Guide post; 2. Mounting bracket; 3. Lower plate assembly; 31. Slider; 4. Upper plate assembly; 41. Upper base plate; 42. Permanent magnet; 43. Electromagnet; 44. Ferromagnetic metal plate; 441. Positioning post; 45. Test plate; 46. Pad; 461. Mounting hole; 462. Positioning hole; 463. Guide hole; 464. Guide groove; 47. Guide sleeve; 471. Fixing part; 472. Guide part; 5. First driving device; 6. Second driving device; 7. Control device. Detailed Implementation

[0028] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer and more understandable, the following description is provided in conjunction with the appendix. Figure 1-10 The present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0029] Reference Figure 1 and Figure 2A circuit board testing device includes a base 1, a mounting frame 2, a lower plate assembly 3, an upper plate assembly 4, a control device 7, a first driving device 5, and a second driving device 6. The mounting frame 2 is vertically fixed. The second driving device 6 is configured as a pen-shaped cylinder and horizontally fixed on the base 1. A slide rail 11 is also provided on the base 1. Correspondingly, a slider 31 is provided at the bottom end of the lower plate assembly 3, so that the slider 31 at the bottom end of the lower plate assembly 3 is engaged with the slide rail 11 of the base 1. The lower plate assembly 3 is used for mounting and fixing the circuit board to be tested. The telescopic rod of the pen-shaped cylinder is fixed to the lower plate assembly 3, and the lower plate assembly 3 is driven by the pen-shaped cylinder to move on the base 1.

[0030] Reference Figures 3-7 The first driving device 5 is configured as a slide cylinder, and the slide cylinder is vertically fixed on the mounting frame 2. The upper plate assembly 4 includes an upper base plate 41, two permanent magnets 42, an electromagnet 43, several ferromagnetic metal plates 44, and several test plates 45. The upper base plate 41 is fixed to the slide end of the slide cylinder, and the electromagnet 43 and the two permanent magnets 42 are fixed to the bottom end of the upper base plate 41, with the two permanent magnets 42 located on both sides of the electromagnet 43. To further ensure that the electromagnet 43 and the two permanent magnets 42 are firmly fixed to the bottom end of the upper base plate 41, a pad 46 is fixedly provided at the bottom end of the upper base plate 41, and three mounting holes 461 are formed through the surface of the pad 46. The electromagnet 43 and the permanent magnets 42 are all inserted into the mounting holes 461 and fixed to the upper base plate 41. Thus, the pad 46 can protect the electromagnet 43 and the permanent magnets 42. Electromagnet 43, first drive device 5, and second drive device 6 are all electrically connected to control device 7.

[0031] Each ferromagnetic metal plate 44 is fixedly mounted on the top of the test board 45. When the test board 45 needs to be installed and fixed, the corresponding test board 45 is selected according to the circuit board to be tested. The ferromagnetic metal plate 44 at the top of the test board 45 attracts the permanent magnet 42, thereby achieving the installation and fixation of the test board 45. The test board 45 is fixedly installed by the attraction between the permanent magnet 42 and the ferromagnetic metal plate 44, which has the advantages of convenient installation and disassembly, and facilitates the switching of the test board 45 to test different circuit boards. The ferromagnetic metal plate 44 is made of iron, which is more readily available in nature and has not only higher magnetic permeability but also good magnetic memory characteristics. After the circuit board to be tested is installed and fixed on the lower plate assembly 3, the lower plate assembly 3 moves to the bottom of the upper plate assembly 4 under the drive of the pen-shaped cylinder. After the test is installed and fixed by the attraction between the permanent magnet 42 and the ferromagnetic metal plate 44, the upper plate assembly 4 is lowered by the sliding cylinder. This causes the test board 45 to descend until it comes into contact with the circuit board to be tested, thereby testing the circuit board.

[0032] Reference Figure 5 , Figure 6 and Figure 8 To ensure precise alignment between the test plate 45 and the circuit board mounted on the lower plate assembly 3 after descent, several positioning posts 441 are provided at the top of the ferromagnetic metal plate 44, and correspondingly, several positioning holes 462 are formed on the surface of the pad 46. When the ferromagnetic metal plate 44 and the permanent magnet 42 are attracted and fixed together, the positioning posts 441 at the top of the ferromagnetic metal plate 44 pass into the positioning holes 462 on the surface of the pad 46, thereby ensuring accurate positioning and installation between the ferromagnetic metal plate 44 and the test plate 45. When the slide cylinder drives the upper plate assembly 4 to descend, the control device 7 controls the electromagnet 43 to be energized, so that the electromagnet 43 and the permanent magnet 42 are attracted and fixed together with the ferromagnetic metal plate 44. This makes the test plate 45 more securely fixed, preventing it from detaching due to inertia during descent. When the control device 7 controls the electromagnet 43 to be de-energized, it facilitates the disassembly of the test plate 45 from the upper plate 41.

[0033] Reference Figure 3 , Figure 9 and Figure 10 To ensure smooth descent of the upper plate assembly 4 driven by the slide cylinder, several guide posts 12 are vertically mounted on the base 1. Correspondingly, several guide grooves 464 are formed on the surface of the pad 46, and several guide holes 463 are formed through the center of each guide groove 464. Guide sleeves 47 are installed within the guide grooves 464 and guide holes 463. Each guide sleeve 47 consists of a fixing part 471 and a guiding part 472. The vertical cross-section of the guide sleeve 47 is T-shaped, with the fixing part 471 located at the top of the guiding part 472. The guide posts 12 are inserted into the guide sleeves 47, causing the guiding part 472 of the guide sleeve 47 to engage with the guide holes 463 of the pad 46, and the fixing part 471 of the guide sleeve 47 to engage with the guide grooves 464 of the pad 46. The guide sleeve 47 is fixed to the pad 46 by bolts, thereby making the guide sleeve 47 and the pad 46 firmly fixed.

[0034] The specific implementation principle of this application embodiment is as follows: When the circuit board testing equipment needs to test the circuit board, the circuit board to be tested is fixedly installed on the lower plate assembly 3. According to the type of circuit board to be tested, the corresponding test board 45 is selected and installed between it and the upper plate 41. During installation, the positioning post 441 on the ferromagnetic metal plate 44 is inserted into the positioning hole 462 of the pad plate 46, so that the ferromagnetic metal plate 44 is magnetically attracted and fixed to the permanent magnet 42 at the bottom of the upper plate 41. This makes it easy to disassemble and install the test board with the upper plate 41. When testing different types of circuit boards, it is convenient to switch between different types of test boards 45. The setting of several positioning posts 441 on the ferromagnetic metal plate 44 makes the positioning and installation of the test board accurate.

[0035] The extension rod of the pen-shaped cylinder extends, driving the lower plate assembly 3, which carries the circuit board to be tested, to move directly below the test plate 45. At this time, the slider 31 at the bottom of the lower plate assembly 3 moves along the slide rail 11 on the base 1, ensuring the lower plate assembly 3 remains stable during movement. After the lower plate assembly 3 and the circuit board are directly below the test plate 45, the slide cylinder drives the upper plate assembly 4 to descend. At this time, the control device 7 controls the electromagnet 43 to be energized, causing the electromagnet 43 and the permanent magnet 42 to attract and fix together with the ferromagnetic metal plate 44. This makes the test plate 45 more securely fixed, preventing it from detaching due to inertia during descent. The test plate 45 continues to descend until it abuts against the circuit board on the lower plate assembly 3, thus performing the circuit board test.

[0036] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, shall be protected by the present invention.

Claims

1. A circuit board testing device, characterized in that: It includes a base, a mounting bracket, a lower plate assembly, an upper plate assembly, a control device, a first drive device, and a second drive device; The mounting bracket is mounted on the base, the upper plate assembly is slidably mounted on the mounting bracket and is driven to rise and fall by the first driving device, and the lower plate assembly is slidably mounted on the base and is driven to slide by the second driving device. The upper plate assembly includes an upper base plate, several permanent magnets, several electromagnets, several test plates, and several ferromagnetic metal plates. Several of the permanent magnets and electromagnets are fixedly disposed at the bottom end of the upper base plate, and each of the ferromagnetic metal plates is fixedly disposed at the top end of the test plate and can be attracted to the permanent magnets and electromagnets. The electromagnets, the first driving device, and the second driving device are all electrically connected to the control device.

2. The circuit board testing equipment according to claim 1, characterized in that: A pad is fixedly provided at the bottom end of the upper substrate. A plurality of mounting holes are formed through the pad. A plurality of permanent magnets and a plurality of electromagnets are inserted into the mounting holes and fixed to the upper substrate.

3. The circuit board testing equipment according to claim 2, characterized in that: The ferromagnetic metal plate is provided with a number of positioning posts, and the pad is provided with a number of positioning holes, with the positioning posts passing through the positioning holes.

4. The circuit board testing equipment according to claim 2, characterized in that: A pair of guide posts are vertically fixed on the base, and a pair of guide holes are formed in the pad. A guide sleeve is fixedly installed in the guide hole, and the guide posts pass through the guide sleeve. The pad and guide sleeve move up and down along the guide posts.

5. The circuit board testing equipment according to claim 4, characterized in that: The surface of the pad is provided with a guide groove, the guide hole is located at the center of the guide groove, the vertical cross section of the guide sleeve is "T" shaped and is composed of a guide part and a fixing part. The fixing part is located at the top of the guide part and is fitted into the guide groove and is fixed to the pad by bolts.

6. The circuit board testing equipment according to claim 1, characterized in that: The first driving device is a slide cylinder, which is vertically fixed on the mounting frame, and the slide end of the slide cylinder is fixed to the upper base plate.

7. The circuit board testing equipment according to claim 1, characterized in that: The second driving device is a pen-shaped cylinder, the base is provided with a slide rail, the bottom of the lower plate assembly is provided with a slider, and the slider is engaged and slidably disposed on the slide rail.

8. The circuit board testing equipment according to claim 1, characterized in that: The ferromagnetic metal plate is made of iron.

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