Circuit board detection equipment

Abstract

The utility model belongs to the field of circuit board detection, and particularly relates to circuit board detection equipment which comprises a host, a detection mechanism and a pressing plate mechanism. The detection mechanism comprises a detection part and a bearing part. The pressing plate mechanism comprises a driving part and a pressing part. The detection part comprises a probe plate and a probe, the bearing part comprises a supporting plate, and the supporting plate is provided with a through hole for the probe to extend into. The host is operated to enable the driving part to work and drive the pressing part to press the circuit board and the bearing part, the bearing part gradually gets close to the detection part under the action of pressure until the bearing part abuts against the detection part, and at the moment, the probe also penetrates through the through hole in the supporting plate to abut against the circuit board, so that the probe is tightly attached to the circuit board during detection and does not shake; and the stability and the success rate during testing are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board detection, in particular to a circuit board detection device. Background Art

[0002] Circuit board, also known as electronic circuit integrated board, also known as PCB (Printed Circuit Board), is the carrier of electrical connection of electronic components and plays an indispensable role in electronic equipment. In order to ensure that the quality and performance of the circuit board meet the requirements, the circuit board needs to be tested.

[0003] During the testing process, the existing circuit board detection equipment may have problems with unstable support and easy shaking due to the fine size of the probe itself if the support is insufficient. When the probe and the circuit board are aligned, the shaking may cause alignment deviation and cannot be accurately aligned, which in turn causes unstable contact between the probe and the circuit board, affecting the accuracy and stability of circuit board detection. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, a circuit board detection device is provided.

[0005] To achieve the above-mentioned purpose, the utility model provides a circuit board detection device, including a mainframe, a detection mechanism and a pressure plate mechanism, the detection mechanism includes a detection part and a bearing part; the detection part includes a needle plate and a probe, the needle plate is arranged on the mainframe, the probe is detachably connected to the needle plate, and is electrically connected to the mainframe; the bearing part is arranged between the pressure plate mechanism and the detection part, and is movably connected to the detection part; the bearing part includes a support plate, and a plurality of through holes for the probe to extend into are correspondingly arranged on the support plate; the pressure plate mechanism includes a driving part and a pressing part; the driving part is connected to the mainframe, the pressing part is connected to the output end of the driving part, and faces the bearing part.

[0006] According to an embodiment of the present invention, the probe comprises a probe head, a probe barrel and a first spring, wherein the first spring is arranged inside the probe barrel, and the probe head extends into the probe barrel and is connected to the first spring.

[0007] According to one embodiment of the utility model, the detection mechanism also includes a guide mechanism, which includes a guide column, a guide sleeve and a second spring; the bearing part is provided with a guide hole, the guide sleeve is connected to the needle plate, one end of the guide column extends into the guide hole, and the other end is sleeved with the second spring and extends into the guide sleeve.

[0008] According to an embodiment of the present invention, the bearing part further comprises a bearing frame; the bearing frame is fixedly connected to the outer periphery of the support plate, and a limiting groove is provided on the periphery of the frame.

[0009] According to an embodiment of the present utility model, a positioning seat is further provided on the carrying frame, and the positioning seat is L-shaped.

[0010] According to an embodiment of the utility model, a support seat is further provided on the support plate, and a top horizontal plane of the support seat is flush with a bottom horizontal plane of the limiting groove.

[0011] According to an embodiment of the present invention, positioning pins corresponding to the through holes of the circuit board are also provided on the support plate.

[0012] According to an embodiment of the present invention, the pressing portion includes a fixing frame, a pressing plate and a pressing block. The pressing plate is connected below the fixing frame, and the pressing block is arranged on the bottom surface of the pressing plate.

[0013] According to an embodiment of the utility model, the main machine includes a chassis and a frame, and the frame includes a column; a sliding sleeve is provided on the pressing portion, and the sliding sleeve is sleeved on the column and slidably connected with the column.

[0014] According to an embodiment of the present invention, the pressing portion is further provided with a scanning gun.

[0015] In summary, the utility model operates the host, the driving part generates a driving force, drives the pressing part to press down, the circuit board and the bearing part are pressed tightly, and the bearing part is also pressed down synchronously under the action of pressure until the bearing part and the detection part are pressed tightly, and the probe also passes through the through hole on the support plate and is in close contact with the point to be tested on the circuit board for testing. When the pressing part presses against the bearing part to detect the circuit board, the probe must first pass through the through hole on the support plate before it can be pressed tightly against the circuit board. The through hole limits and fixes the probe, so that the probe reduces shaking during the detection process, and is more accurately aligned with the point to be tested on the circuit board, which improves the stability during detection, thereby improving the accuracy and success rate of circuit board detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 is a front view of a circuit board detection device in an embodiment;

[0018] Figure 2 is a three-dimensional diagram of a circuit board detection device in an embodiment;

[0019] Figure 3 is a three-dimensional diagram of a detection mechanism of a circuit board detection device in an embodiment;

[0020] Figure 4 is a schematic structural diagram of a probe of a circuit board detection device in an embodiment;

[0021] Figure 5 It is a schematic structural diagram of the guide column of the circuit board detection device in the embodiment.

[0022] Description of Reference Numerals

[0023] 1-host; 11-chassis; 111-display panel; 112-control button; 113-handle; 12-frame; 121-column; 122-sliding sleeve;

[0024] 2-detection mechanism; 21-detection part; 211-needle plate; 212-probe; 2121-probe; 2122-probe tube; 2123-first spring; 22-bearing part; 23-support plate; 231-through hole; 232-support seat; 233-positioning pin; 24-guide mechanism; 241-guide column; 242-guide sleeve; 243-second spring; 244-guide hole; 25-bearing frame; 251-limiting groove; 26-positioning seat;

[0025] 3-pressing plate mechanism; 31-driving part; 32-pressing part; 321-fixing frame; 322-pressing plate; 323-pressing block; 324-scanning gun;

[0026] 4- Circuit board. DETAILED DESCRIPTION

[0027] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0028] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] See also Figure 1 , Figure 3 , Figure 1 is a front view of the circuit board detection device in this embodiment, Figure 3The present embodiment provides a circuit board detection device, and the circuit board detection device in this example includes a host 1, a detection mechanism 2 and a pressure plate mechanism 3. The host 1 is used to control the circuit detection device to detect the circuit board 4.

[0030] The detection mechanism 2 is used to contact the detection point of the circuit board 4 to detect the performance of the circuit board 4. The detection mechanism 2 includes a detection part 21 and a bearing part 22. The detection part 21 includes a needle plate 211 and a probe 212. The needle plate 211 is arranged on the host 1, and the probe 212 is detachably connected to the needle plate 211, and the probe 212 is electrically connected to the host 1. When the detection part 21 detects the circuit board 4, one end of the probe 212 is connected to the host 1, and the other end is connected to the circuit board 4 to realize the detection of the circuit board 4.

[0031] The bearing part 22 is disposed between the pressing plate mechanism 3 and the detection part 21 and is movably connected to the detection part 21 for bearing the circuit board 4. Figure 3 The bearing part 22 includes a support plate 23. The support plate 23 is provided with a plurality of through holes 231, and the through holes 231 are arranged one by one with the probes 212, so that the probes 212 can extend into the through holes 231. One end of the probe 212 is connected to the host 1, and the other end passes through the through hole 231 and is connected to the circuit board 4.

[0032] The pressing plate mechanism 3 is connected to the host 1 and is arranged above the detection mechanism 2, and includes a driving part 31 and a pressing part 32. One end of the driving part 31 is connected to the host 1, and the other end is connected to the pressing part 32, which is used to control the lifting of the pressing part 32. The output end of the driving part 31 is fixedly connected to the pressing part 32, which is used to drive the pressing part 32 to lift and lower, and the pressing part 32 faces the bearing part 22 so as to press against the circuit board 4 and the bearing part 22 during detection.

[0033] See also Figure 1 , Figure 3 In actual application, the circuit board 4 is placed on the bearing part 22, and the driving part 31 generates a driving force by operating the host 1, driving the pressing part 32 to press down, so that the pressing part 32 is pressed against the circuit board 4. The pressing part 32 is pressed against the circuit board 4, applying downward pressure to the circuit board 4. The circuit board 4 is placed on the bearing part 22, so that the bearing part 22 is also pressed down synchronously under the action of pressure until the bearing part 22 and the detection mechanism 2 are pressed tightly. At this time, the probe 212 also passes through the through hole 231 on the support plate 23 and presses against the circuit board 4, so that the probe 212 can accurately contact the test point of the circuit board 4, so that the detection mechanism 2 can detect the circuit board 4 and improve the stability during the test. After the detection is completed, the driving part 31 drives the pressing part 32 to move upward, so that the circuit board 4 on the bearing part 22 can be removed.

[0034] See also Figure 4The probe 212 includes a probe 2121, a probe barrel 2122 and a first spring 2123, wherein the first spring 2123 is disposed inside the probe barrel 2122 and is used to connect the probe 2121 and the probe barrel 2122. In this way, the probe 2121 can be retracted during detection, and when the first spring 2123 is compressed, the probe 2121 is pressed more tightly against the circuit board 4, which can effectively avoid shaking and poor contact of individual probes 212, thereby improving the stability and success rate of detection.

[0035] See also Figure 3 , Figure 5 In this embodiment, the detection mechanism 2 further includes a guide mechanism 24, which includes a guide column 241, a guide sleeve 242 and a second spring 243. The bearing part 22 is provided with a guide hole 244 corresponding to the guide column 241, and the detection mechanism 2 is provided with a guide sleeve 242 adapted to the guide column 241. One end of the guide column 241 extends into the guide hole 244 and is connected to the bearing part 22, and the other end extends into the guide sleeve 242 and is connected to the detection mechanism 2. In this way, the movable connection between the detection part 21 and the bearing part 22 is realized. Specifically, when the bearing part 22 is pressed down, the guide column 241 is driven to slide in the guide sleeve 242, so that the bearing part 22 is close to the detection part 21 when pressed down. The second spring 243 is sleeved on one end of the guide column 241 and abuts against the inside of the guide sleeve 242, providing appropriate damping for the downward movement of the bearing part 22, preventing the bearing part 22 from moving too fast and colliding, and improving the stability of the downward movement of the bearing part 22.

[0036] See also Figure 3 The bearing portion 22 further includes a bearing frame 25. The bearing frame 25 is fixedly connected to the outer periphery of the support plate 23. The bearing frame 25 is further provided with a limiting groove 251, which is provided on the frame body of the bearing frame 25 and is used to bear the circuit board 4. Specifically, when the circuit board 4 is placed on the bearing portion 22, the circuit board 4 is limited in the limiting groove 251, and the limiting groove 251 supports the outer periphery of the circuit board 4, so that the circuit board 4 is stably placed during the detection process.

[0037] See also Figure 3 , a positioning seat 26 is also provided on the carrying frame 25. The positioning seat 26 is L-shaped, and the openings are inwardly arranged at the four corners of the carrying frame 25, which are used to further limit the circuit board 4 in the limiting groove 251. Specifically, the positioning seat 26 can also be other shapes, and can be detachably installed on the carrying frame 25, so as to better adjust the position angle to adapt to the circuit board 4.

[0038] See also Figure 3, a support seat 232 is also provided on the support plate 23, and the top horizontal surface of the support seat 232 is flush with the bottom horizontal surface of the limiting groove 251. With this arrangement, when the circuit board 4 is placed in the limiting groove 251, the support seat 232 plays a supporting role on the middle part of the circuit board 4. This ensures that the circuit board 4 is evenly stressed during the test, preventing the middle part of the circuit board 4 from being unsupported when the pressing part 32 is pressed down, and preventing the circuit board 4 from being damaged during the test.

[0039] See also Figure 3 The support plate 23 is also provided with a positioning pin 233 corresponding to the positioning hole of the circuit board 4. The positioning pin 233 is inserted into the positioning hole of the circuit board 4, which is convenient for accurately positioning the circuit board 4 and improving the test accuracy.

[0040] See also Figure 1 The pressing part 32 includes a fixing frame 321, a pressing plate 322 and a pressing block 323. The pressing part 32 is connected to the host 1 and is used to press the circuit board 4 and the bearing part 22 toward the detection mechanism 2. The pressing plate 322 is connected below the fixing frame 321, and a plurality of pressing blocks 323 are provided on the bottom surface of the pressing plate 322 for pressing against the circuit board 4, so that the circuit board 4 is subjected to downward pressure, thereby achieving contact with the probe 212.

[0041] See also Figure 2 , Figure 2 It is a three-dimensional diagram of the circuit board detection device in this embodiment. The host 1 includes a chassis 11 and a frame 12, and the frame 12 is connected to the chassis 11 by snapping, and the frame 12 includes a column 121. A sliding sleeve 122 is provided on the fixed frame 321, and the sliding sleeve 122 is sleeved on the column 121 and slidably connected with the column 121. The driving part 31 generates a driving force, so that the fixed frame 321 drives the sliding sleeve 122 to slide along the direction of the column 121 under the action of the driving force, so that the column 121 supports and guides the pressing part 32.

[0042] See also Figure 1 The pressing part 32 further includes a scanning gun 324, which is disposed on the fixing frame 321. The scanning gun 324 is used to scan the information code on the circuit board 4.

[0043] See also Figure 1 , Figure 2 The chassis 11 is provided with a display panel 111, a control button 112 and a handle 113. The display panel 111 is used to display prompt information during the detection process, the control button 112 specifically includes a double start button and an emergency stop button to improve the safety during use, and the handle 113 is fixedly arranged on both sides of the host 1 for easy transportation.

[0044] See also Figure 1 , Figure 2The detection mechanism 2 and the pressing plate mechanism 3 are respectively provided with two groups, the first group of the detection mechanism 2 is provided correspondingly to the first group of the pressing plate mechanism 3, and the second group of the detection mechanism 2 is provided correspondingly to the second group of the pressing plate mechanism 3. Thus, double-station detection is realized and detection efficiency is improved.

[0045] In summary, before testing the circuit board 4, first place the circuit board 4 on the bearing part 22, and the circuit board 4 is placed in the limiting groove 251 of the bearing frame 25. The bearing frame 25 supports the edge of the circuit board 4, and the support seat 232 supports the middle part of the circuit board 4. The positioning pin 233 is inserted into the positioning hole of the circuit board 4, so that the circuit board 4 and the bearing part 22 are accurately aligned. When performing a specific test on the circuit board 4, operate the control button 112 to operate the driving part 31. The driving part 31 outputs a driving force to drive the pressing part 31 to press down. Under the action of the driving force, the fixed frame 321 moves down along the column 121, and the pressing plate 322 is fixed in the fixed frame 321 and pressed down synchronously, and at the same time drives the pressing block 323 to press down. The pressing part 31 gradually approaches the bearing part 22 until the pressing block 323 rests on the circuit board 4, pressing the circuit board 4 and the bearing part 22 tightly. The pressing part 31 continues to press down, and the circuit board 4 and the bearing part 22 approach the detection part 21 under the action of pressure until the bearing part 22 and the detection part 21 are pressed tightly. At this time, the probe 212 also passes through the through hole 231 on the support plate 23 and presses tightly against the circuit board 4, so that the probe 212 can accurately contact the point to be tested on the circuit board 4, so that the detection mechanism 2 can detect the circuit board 4. The second spring 243 inside the guide mechanism 24 is compressed, and the second spring 243 inside the probe 212 is also compressed, so that the probe 2121 and the point to be tested on the circuit board 4 are further pressed tightly. After the detection is completed, the pressing part 31 is lifted, and the second spring 28 inside the guide mechanism 24 is released, driving the bearing part 22 to automatically lift up and move away from the detection part 21. At the same time, the first spring 2123 inside the probe 212 is also released, and the probe 212 returns to its natural state. The probe 212 moves away from the circuit board 4, and the detection ends.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A circuit board testing device, characterized in that: include: A main unit (1), a detection mechanism (2) and a pressure plate mechanism (3); the detection mechanism (2) comprises a detection part (21) and a bearing part (22); the detection part (21) comprises a needle plate (211) and a probe (212); the needle plate (211) is arranged on the main unit (1); the probe (212) is detachably connected to the needle plate (211) and is electrically connected to the main unit (1); the bearing part (22) is arranged on the pressure plate mechanism (3) and the detection part (2 1) and is movably connected to the detection portion (21); the bearing portion (22) comprises a support plate (23), and the support plate (23) is correspondingly provided with a plurality of through holes (231) for the probes (212) to extend therethrough; the pressing plate mechanism (3) comprises a driving portion (31) and a pressing portion (32); the driving portion (31) is connected to the host (1), and the pressing portion (32) is connected to the output end of the driving portion (31) and faces the bearing portion (22).

2. The circuit board detection device according to claim 1, characterized in that: The probe (212) comprises a probe head (2121), a probe tube (2122) and a first spring (2123); the first spring (2123) is arranged inside the probe tube (2122); the probe head (2121) extends into the probe tube (2122) and is connected to the first spring (2123).

3. The circuit board detection device according to claim 1, characterized in that: The detection mechanism (2) further comprises a guide mechanism (24), the guide mechanism (24) comprising a guide column (241), a guide sleeve (242) and a second spring (243); the bearing portion (22) is provided with a guide hole (244), the guide sleeve (242) is connected to the needle plate (211), one end of the guide column (241) extends into the guide hole (244), and the other end is sleeved with the second spring (243) and extends into the guide sleeve (242).

4. The circuit board detection device according to claim 1, characterized in that: The bearing portion (22) further comprises a bearing frame (25); the bearing frame (25) is fixedly connected to the outer periphery of the support plate (23), and a limiting groove (251) is provided on the periphery of the frame.

5. The circuit board detection device according to claim 4, characterized in that: The carrying frame (25) is also provided with a positioning seat (26), and the positioning seat (26) is L-shaped.

6. The circuit board detection device according to claim 4, characterized in that: A support seat (232) is also provided on the support plate (23), and a top horizontal surface of the support seat (232) is flush with a bottom horizontal surface of the limiting groove (251).

7. The circuit board detection device according to any one of claims 1 to 6, characterized in that: The support plate (23) is also provided with a positioning pin (233).

8. The circuit board detection device according to any one of claims 1 to 6, characterized in that: The pressing portion (32) comprises a fixing frame (321), a pressing plate (322) and a pressing block (323); the pressing plate (322) is connected below the fixing frame (321), and the pressing block (323) is arranged on the bottom surface of the pressing plate (322).

9. The circuit board detection device according to any one of claims 1 to 6, characterized in that: The host (1) comprises a chassis (11) and a frame (12), wherein the frame (12) comprises a column (121); a sliding sleeve (122) is provided on the pressing portion (32), and the sliding sleeve (122) is sleeved on the column (121) and is slidably connected to the column (121).

10. The circuit board detection device according to any one of claims 1 to 6, characterized in that: The pressing portion (32) is also provided with a scanning gun (324).

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