A pin detection device for PCB

Abstract

A pin detection device for PCB includes a detection platform, a mounting frame, a fixing component, a detection component and a central control system. The mounting frame and the fixing component are both installed on the detection platform, and the fixing component is located below the mounting frame. The detection component is installed on the mounting frame, and the central control system is respectively connected to the mounting frame, the fixing component and the detection component by signal; the detection component includes a sliding plate, a rotating rod, a plurality of deflection blocks and a displacement sensor. The utility model is designed to automatically scan and detect the height of PCB pins. It can not only detect abnormal pin heights on the PCB, but also detect the location of pins with abnormal heights, which greatly improves the accuracy of the pin detection device; the mounting frame is designed to be movable and adjustable, so that the pin detection device can detect pin heights of different specifications according to needs, which greatly expands the scope of application of the pin detection device; the utility model is highly practical and has a strong promotion significance.

Description

Technical Field

[0001] The utility model relates to a circuit board processing device, in particular to a PCB pin detection device. Background Art

[0002] PCB stands for printed circuit board or printed circuit board. It is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from electronic watches and calculators to computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, PCBs are used to make electrical interconnections between various components. PCB consists of an insulating base plate, connecting wires, and pads for assembling and welding electronic components. It has the dual functions of a conductive line and an insulating base plate.

[0003] During the production process of PCB, the pin height of various parts installed on it needs to be tested to ensure that they meet the molding requirements of the circuit board. The conventional pin detection method is usually to manually operate a tool with a metal slide bar to make the metal slide bar pass across the PCB at a set height, and manually judge whether there are pins touching the metal slide bar to determine whether the pin height meets the requirements. This method can often only detect whether there are super-high pins on the PCB, but cannot indicate the location of the problem pins, which is very unfavorable for the subsequent pin cutting operation of the problem PCB. In addition, the manual judgment method is not only unreliable, but also inefficient. Utility Model Content

[0004] Based on this, it is necessary to provide a PCB pin detection device to address the deficiencies in the prior art.

[0005] A pin detection device for a PCB includes a detection platform, a mounting frame, a fixing component, a detection component and a central control system. The mounting frame and the fixing component are both mounted on the detection platform, and the fixing component is located below the mounting frame. The detection component is mounted on the mounting frame, and the central control system is respectively connected to the mounting frame, the fixing component and the detection component by signal. The detection component includes a sliding plate, a rotating rod, a plurality of deflection blocks and a displacement sensor. The two ends of the sliding plate are engaged with the mounting frame and can slide horizontally. A deflection groove is also provided at the bottom of the sliding plate. The two ends of the rotating rod are fixedly mounted in the deflection groove. A plurality of the deflection blocks are sequentially inserted into the rotating rod and can be movably rotated. A plurality of the displacement sensors are mounted on the top of the deflection groove and are respectively abutted against the upper ends of the plurality of deflection blocks on both sides to limit the position. The plurality of displacement sensors are respectively connected to the central control system by signal.

[0006] Furthermore, the detection components are provided with two groups, and the two groups of the detection components are horizontally crisscrossed and arranged in layers up and down. The detection component located at the top can also be flipped movably.

[0007] Furthermore, the mounting frame includes a plurality of lifting adjustment rods and a positioning frame. The plurality of lifting adjustment rods are all erected on the detection platform and can be lifted and lowered movably, and the positioning frame is installed at the upper end of the lifting adjustment rods. The positioning frame is designed as a square frame structure penetrating from top to bottom, and a sliding groove is provided on the inner side thereof, and the two ends of the detection component are clamped and installed in the sliding groove.

[0008] Furthermore, the fixing assembly includes a base, two groups of longitudinal fixing frames arranged in left-right correspondence, and two groups of transverse fixing frames arranged in front-back correspondence. The base is installed on the detection platform and is located below the detection assembly. The longitudinal fixing frame includes a support rod, a longitudinal fixing bar and a limit clamp hinge. The support rod stands on the upper end of the base, and the longitudinal fixing bar is installed on the upper end of the support rod. The longitudinal fixing bar is provided with transverse adjustment holes running through the left and right. The transverse fixing frame includes a transverse fixing bar and a limit clamp ring. The transverse fixing bar is sequentially passed through the two transverse adjustment holes in the left-right direction and can be adjusted by sliding forward and backward. The limit clamp ring is sleeved on one end of the transverse fixing bar.

[0009] Furthermore, a longitudinal adjustment slot is provided on the base, and a longitudinal fixing frame on one side is mounted on the longitudinal adjustment slot and can be slidably adjusted left and right.

[0010] Furthermore, the detection platform is also provided with a push-pull slide rail, and the base is mounted on the push-pull slide rail and can be pushed and slid forward and backward.

[0011] In summary, the beneficial effects of the pin detection device of a PCB of the utility model are: by designing a detection component that can automatically scan and detect the height of the PCB pins, not only can the abnormal pin height on the PCB be detected, but also the location of the pin with abnormal height can be detected, which greatly improves the accuracy of the pin detection equipment; the mounting frame is designed to be movable and adjustable, so that the pin detection device can detect the height of pins of different specifications according to needs, which greatly expands the application scope of the pin detection device; and the fixing component is designed to be able to adjust the length and width vertically and horizontally, so that the detection device is more convenient to fix PCBs of different sizes for pin detection; the utility model is highly practical and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a PCB pin detection device according to the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0014] Figure 3 for Figure 2 The structural diagram of the test bench;

[0015] Figure 4 for Figure 2 Schematic diagram of the exploded structure of the middle mounting frame;

[0016] Figure 5 for Figure 2 Schematic diagram of the exploded structure of the fixed components;

[0017] Figure 6 for Figure 2 Schematic diagram of the decomposition structure of the detection components. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figures 1 to 6 As shown, the utility model provides a pin detection device 100 for a PCB, which includes a detection platform 10, a mounting frame 20, a fixing component 30, a detection component 40 and a central control system (not shown in the figure), the mounting frame 20 and the fixing component 30 are both installed on the detection platform 10, and the fixing component 30 is located below the mounting frame 20, the detection component 40 is installed on the mounting frame 20, and the central control system is respectively connected to the mounting frame 20, the fixing component 30 and the detection component 40 by signal.

[0020] The mounting frame 20 includes a plurality of lifting adjustment rods 21 and a positioning frame 22. The plurality of lifting adjustment rods 21 are all erected on the detection platform 10 and can be movably lifted and lowered. The positioning frame 22 is installed at the upper end of the lifting adjustment rods 21. The positioning frame 22 is designed as a square frame structure that penetrates from top to bottom, and a sliding groove 221 is provided on the inner side thereof. The two ends of the detection component 40 are snap-fitted and installed in the sliding groove 221. The lifting adjustment rods 21 that can be movably lifted and lowered can drive the positioning frame 22 and the detection component 40 installed in the positioning frame 22 to be movably lifted and lowered, thereby realizing the adjustment control of the distance between the detection component 40 and the PCB pin, so that the pin detection device can detect pins of different heights.

[0021] The fixing assembly 30 includes a base 31, two groups of longitudinal fixing frames 32 correspondingly arranged on the left and right, and two groups of transverse fixing frames 33 correspondingly arranged on the front and back. The base 31 is installed on the detection platform 10 and is located below the detection assembly 40. The longitudinal fixing frame 32 includes a support rod 321, a longitudinal fixing bar 322 and a limit clamp hinge 323. The support rod 321 stands on the upper end of the base 31. The longitudinal fixing bar 322 is installed on the upper end of the support rod 321, and the longitudinal fixing bar 322 is provided with a transverse adjustment hole 322a that passes through the left and right. The transverse fixing frame 33 includes a transverse fixing bar 331 and a limit clamp ring 332. The transverse fixing bar 331 is sequentially inserted into the two transverse adjustment holes 322a along the left and right directions and can be adjusted by sliding forward and backward. The limit clamp ring 332 is sleeved on one end of the transverse fixing bar 331.

[0022] When the PCB needs to be clamped and fixed, it is only necessary to first open the limit clamping hinge 323 on the longitudinal fixing frame 32, then clamp and install the PCB between the longitudinal fixing strip 322 and the transverse fixing strip 331, and finally reset the limit clamping hinge 323 to clamp and limit the left and right ends of the PCB. If PCBs of different widths need to be tested, it is only necessary to slide along the transverse adjustment hole 322a to adjust the distance between the two transverse fixing strips 331, so that the fixing assembly 30 can match and fix PCBs of different widths.

[0023] The base 31 is also provided with a longitudinal adjustment slot 311, and a longitudinal fixing frame 32 on one side is mounted on the longitudinal adjustment slot 311 and can be adjusted by sliding left and right. If it is necessary to detect PCBs of different lengths, the longitudinal fixing frame 32 on one side only needs to be adjusted by sliding along the longitudinal adjustment slot 311, so that the fixing assembly 30 can match and fix PCBs of different lengths. The detection table 10 is also provided with a push-pull rail 11, and the base 31 is mounted on the push-pull rail 11 and can be pushed and pulled and slid forward and backward. Since the fixing assembly 30 is blocked and limited by the mounting frame 20 and the detection assembly 40 above, it is difficult for the PCB to be fixed in the fixing assembly 30 from above. The base 31 provided on the push-pull rail 11 can enable the fixing assembly 30 to be pushed and pulled forward and backward to make the fixing assembly 30 offset from the mounting frame 20 and the detection assembly 40 above, so that the PCB can be fixed in the fixing assembly 30 more easily.

[0024] The detection assembly 40 includes a sliding plate 41, a rotating rod 42, a plurality of deflection blocks 43 and a displacement sensor 44. The two ends of the sliding plate 41 are engaged with the mounting frame 20 and can slide horizontally. The bottom of the sliding plate 41 is also provided with a deflection slot 411. The two ends of the rotating rod 42 are fixedly installed in the deflection slot 411. The plurality of deflection blocks 43 are sequentially inserted into the rotating rod 42 and can be movably rotated. The plurality of displacement sensors 44 are installed at the top of the deflection slot 411 and are respectively abutted against the upper ends of the plurality of deflection blocks 43. The plurality of displacement sensors 44 are respectively connected to the central control system signal.

[0025] When it is necessary to detect the pin height on the PCB, the sliding plate 41 only needs to slide horizontally along the sliding groove 221 to sweep over the top of the PCB, and the deflection block 43 and the displacement sensor 44 below the sliding plate 41 will be combined to detect the pin height. If there is no pin that is too high on the PCB, the deflection block 43 will not contact the pin and deflect during the scanning process, and the displacement sensor 44 will not detect the displacement signal at the upper end of the deflection block 43; when there is a pin that is too high on the PCB, the deflection block 43 will contact the pin and deflect during the scanning process, and the displacement sensor 44 will detect the displacement signal at the upper end of the deflection block 43, and then send the detected signal to the central control system to determine whether there is a pin that is too high on the PCB. The central control system can also record the sliding position of the sliding plate 41 and the deflection position of the deflection block 43 to analyze and obtain the position of the pin that is too high.

[0026] Specifically, in this embodiment, the detection components 40 are provided with two groups, and the two groups of the detection components 40 are horizontally crisscrossed and arranged in layers. The detection component 40 located at the top can also be flipped. The two groups of detection components 40 can perform two scanning tests on the PCB at two angles, horizontally and vertically, respectively. The two test results are summarized and analyzed, which not only further improves the reliability of the pin detection device, but also can measure the abnormal pin coordinate position with higher accuracy.

[0027] In summary, the beneficial effects of the pin detection device 100 of a PCB of the utility model are: by designing a detection component 40 that can automatically scan and detect the height of the PCB pin, not only can the abnormal pin height on the PCB be detected, but also the position of the pin with abnormal height can be detected, which greatly improves the accuracy of the pin detection equipment; the mounting frame 20 is designed to be movable and adjustable, so that the pin detection device can detect pin heights of different specifications according to needs, which greatly expands the application range of the pin detection device; and the fixing component 30 is designed to be adjustable in length and width, so that the detection device is more convenient to fix PCBs of different sizes for pin detection; the utility model is highly practical and has a strong promotion significance.

[0028] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A PCB pin detection device, characterized in that: It includes a detection platform, a mounting frame, a fixing component, a detection component and a central control system, wherein the mounting frame and the fixing component are both mounted on the detection platform, and the fixing component is located below the mounting frame, the detection component is mounted on the mounting frame, and the central control system is respectively connected with the mounting frame, the fixing component and the detection component by signal; the detection component includes a sliding plate, a rotating rod, a plurality of deflection blocks and a displacement sensor; both ends of the sliding plate are engaged with the mounting frame and can slide horizontally, a deflection groove is also provided at the bottom of the sliding plate, both ends of the rotating rod are fixedly mounted in the deflection groove, a plurality of the deflection blocks are sequentially passed through the rotating rod and can be movably rotated, a plurality of the displacement sensors are mounted on the top of the deflection groove and are respectively abutted against the upper ends of the plurality of deflection blocks on both sides for limiting, and the plurality of displacement sensors are respectively connected with the central control system by signal.

2. The PCB pin detection device according to claim 1, characterized in that: The detection components are provided with two groups, and the two groups of detection components are horizontally crisscrossed and arranged in layers up and down; and the detection component located at the upper side can also be movably flipped.

3. The PCB pin detection device according to claim 1, characterized in that: The mounting frame includes a plurality of lifting adjustment rods and a positioning frame; the plurality of lifting adjustment rods are all erected on the detection platform and can be movably lifted and lowered, and the positioning frame is installed at the upper end of the lifting adjustment rod. The positioning frame is designed as a square frame structure that penetrates from top to bottom, and a sliding groove is provided on the inner side thereof, and the two ends of the detection component are snap-fitted and installed in the sliding groove.

4. The pin detection device for a PCB as claimed in claim 1, characterized in that: The fixing assembly includes a base, two groups of longitudinal fixing frames arranged correspondingly on the left and right, and two groups of transverse fixing frames arranged correspondingly on the front and back, the base is installed on the detection table and is located below the detection assembly; the longitudinal fixing frame includes a support rod, a longitudinal fixing bar and a limit clamp hinge, the support rod stands on the upper end of the base, the longitudinal fixing bar is installed on the upper end of the support rod, and the longitudinal fixing bar is provided with transverse adjustment holes passing through the left and right; the transverse fixing frame includes a transverse fixing bar and a limit clamp ring, the transverse fixing bar is successively passed through the two transverse adjustment holes along the left and right directions and can be slid forward and backward for adjustment, and the limit clamp ring is sleeved on one end of the transverse fixing bar.

5. The PCB pin detection device as claimed in claim 4, characterized in that: The base is also provided with a longitudinal adjustment slide groove, and a longitudinal fixing frame on one side is mounted on the longitudinal adjustment slide groove and can be adjusted by sliding left and right.

6. The PCB pin detection device according to claim 4, characterized in that: The testing platform is also provided with a push-pull slide rail, and the base is mounted on the push-pull slide rail and can be pushed and slid forward and backward.

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