An online height detection device
By designing an online height detection device, which combines an electric telescopic rod, a pressure sensor probe, a slide rail mechanism, a laser displacement sensor, and an industrial camera, the problem of existing PCB board detection devices being difficult to adjust the detection position and quickly limit movement is solved, enabling flexible detection and real-time data analysis of PCB board assemblies with different thicknesses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SAILUKE ELECTRONICS
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-26
AI Technical Summary
Existing PCB height detection devices are difficult to adjust the detection position flexibly according to PCB assembly components of different thicknesses. Furthermore, when the size of the PCB assembly component changes, the tooling fixtures of the detection system need to be replaced, which is cumbersome and makes it difficult to quickly limit the position of PCB assembly components of different thicknesses.
An online height detection device was designed, which uses a combination of an electric telescopic rod, a pressure sensor probe, a slide rail mechanism, a laser displacement sensor and an industrial camera. The device achieves rapid positioning of PCB board assemblies of different thicknesses through the elastic limiting mechanism of pressure rollers and torsion springs, and performs accurate measurement and detection through the collaborative work of the laser displacement sensor and the industrial camera.
It enables flexible adjustment of the detection height and rapid limit, improves the versatility of the detection device, supports real-time detection and data analysis of PCB board assemblies on the production line, and simplifies the operation process.
Smart Images
Figure CN224416028U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of PCB board testing equipment, specifically an online height detection device. Background Technology
[0002] PCB board, also known as printed circuit board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical connections.
[0003] After various electronic components are soldered onto the PCB board, the pins of these components protrude from the back of the PCB. To ensure smooth installation during subsequent use and to prevent improper contact between the pins and the mounting surface, the height of the protruding pins must be limited. However, due to differences in pin length, installation position, and manual operation among various electronic components, it is impossible to guarantee that all pins meet the requirements. Therefore, it is necessary to detect the height of each pin protrusion. Existing technologies offer various methods for detecting the pin height on PCB boards, mainly divided into two categories: mechanical contact detection and non-contact optical detection. Mechanical contact detection is simple to operate and low in cost, but its detection efficiency is low, making it only suitable for small-batch production. Non-contact optical detection uses laser lines to scan the pin surface, adapting to highly reflective or sharp surfaces, generating three-dimensional contour data, and calculating the height difference between the pin top and the PCB reference surface. This method is suitable for high-speed automated production lines.
[0004] However, most existing PCB height detection devices on the market are difficult to flexibly adjust the detection position according to PCB assemblies of different thicknesses. Furthermore, when the size of the PCB assembly changes, the tooling fixtures of the detection system need to be replaced, which is cumbersome and makes it difficult to quickly limit the position of PCB assemblies of different thicknesses, thus resulting in certain usage defects. Therefore, we propose an online height detection device to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this utility model is to provide an online height detection device to solve the problems mentioned in the background art. Most existing PCB board height detection devices are difficult to flexibly adjust the detection position according to PCB board assemblies of different thicknesses, and when the size of the PCB board assembly changes, the tooling fixture of the detection system needs to be replaced, which is cumbersome and makes it difficult to quickly limit the position of PCB board assemblies of different thicknesses.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an online height detection device, comprising a support mechanism, the support mechanism comprising a mounting base, and an electric telescopic rod fixedly mounted on the top surface of the mounting base, an installation mechanism fixedly mounted on the top surface of the electric telescopic rod, the installation mechanism comprising an installation plate fixedly mounted on the telescopic end of the electric telescopic rod, and a detection mechanism provided on the bottom surface of the installation plate, the detection mechanism comprising a slide rail mechanism fixedly mounted on the bottom surface of the installation plate, and a laser displacement sensor provided at the bottom of the slide rail mechanism;
[0007] A pressure sensing probe is fixedly installed on the bottom end face of the mounting plate, and a limit mechanism and a PCB board assembly are provided on the top end face of the mounting base. The limit mechanism includes a pressure roller that is rotatably installed above the mounting base.
[0008] As a preferred embodiment of this utility model, the support mechanism further includes a positioning plate fixedly installed on the top surface of the mounting base, the positioning plate being disposed on the side of the limiting mechanism away from the detection mechanism.
[0009] As a preferred embodiment of the present invention, the mounting mechanism further includes a top cover fixedly mounted on the top of the mounting plate, and an industrial camera is fixedly mounted on the side end face of the top cover facing the mounting base.
[0010] As a preferred embodiment of this utility model, the mounting plate has a through groove structure inside, and the industrial camera is installed inside the through groove structure.
[0011] As a preferred embodiment of the present invention, the slide rail mechanism includes a first electric slide rail fixedly installed on the bottom surface of the mounting plate, and a second electric slide rail fixedly installed on the slider structure of the second electric slide rail, and a laser displacement sensor fixedly installed on the slider structure of the second electric slide rail.
[0012] As a preferred technical solution of this utility model, the limiting mechanism further includes a mounting shaft, a torsion spring and a fixing block symmetrically arranged at both ends of the pressure roller. The fixing block is fixedly installed on the top surface of the mounting base, and the axial section of the pressure roller is elliptical.
[0013] As a preferred embodiment of this utility model, the mounting shaft is fixedly connected to both ends of the pressure roller, and the mounting shaft is connected to the fixed block by rotation.
[0014] As a preferred embodiment of this utility model, the torsion spring is fixedly connected to the outer end of the mounting shaft, and the fixing block has a groove structure on the side of the pressure roller that cooperates with the torsion spring.
[0015] Compared with the prior art, the beneficial effects of this utility model are: the online height detection device has flexible height adjustment and facilitates quick positioning of PCB board assemblies with different thicknesses, realizing real-time detection of PCB board assemblies on the production line;
[0016] 1. During the inspection, the PCB assembly is pushed under the pressure roller, and one end of the PCB assembly is pressed against the outside of the positioning plate. The PCB assembly squeezes the pressure roller, causing the pressure roller to rotate around the mounting axis and compress the torsion spring. The elastic force of the torsion spring causes the pressure roller to press against the top surface of the PCB assembly to limit and fix the PCB assembly. At the same time, since the axial section of the pressure roller is elliptical, the rotation of the pressure roller can adapt to PCB assemblies of different thicknesses, which facilitates the rapid limiting of PCB assemblies of different thicknesses and improves the versatility of the height detection device.
[0017] 2. When the mounting plate is lowered by the retraction of the electric telescopic rod, when the pressure sensor probe contacts the PCB board assembly, the pressure sensor transmits the pressure signal to the controller through the data line. The controller controls the electric telescopic rod to stop retraction through the actuator, thereby completing the positioning of the detection mechanism. Since the height of the pressure sensor probe is fixed, the distance between the detection mechanism and the PCB board assembly is determined after the mounting plate is positioned.
[0018] Furthermore, the slide rail mechanism enables the laser displacement sensor to move at various detection points above the mounting base. The laser displacement sensor and industrial camera work together, with the laser displacement sensor accurately measuring the pin height and the industrial camera capturing an overall image of the PCB assembly. The data obtained from the detection by the laser displacement sensor and industrial camera is transmitted to the host computer via a data cable to analyze the pin spacing and coplanarity of the PCB assembly, thus achieving real-time detection of the PCB assembly on the production line. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;
[0021] Figure 3 This is a cross-sectional structural diagram of the support mechanism and installation mechanism of this utility model;
[0022] Figure 4 This is a partial exploded view of the limiting mechanism of this utility model;
[0023] Figure 5 This is a schematic diagram of the structure of the testing mechanism of this utility model.
[0024] In the diagram: 100, Support mechanism; 101, Mounting base; 102, Positioning plate; 200, Mounting mechanism; 201, Mounting plate; 202, Top cover; 3, Electric telescopic rod; 400, Detection mechanism; 401, First electric slide rail; 402, Second electric slide rail; 403, Laser displacement sensor; 5, Industrial camera; 6, Pressure sensor probe; 700, Limiting mechanism; 701, Pressure roller; 702, Mounting shaft; 703, Torsion spring; 704, Fixing block; 8, PCB board assembly. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-5 This utility model provides a technical solution: an online height detection device, including a support mechanism 100, the support mechanism 100 including a mounting base 101, and an electric telescopic rod 3 fixedly mounted on the top surface of the mounting base 101, and an installation mechanism 200 fixedly mounted on the top end of the electric telescopic rod 3, as detailed below. Figure 1 and Figure 2 As shown, the installation mechanism 200 includes an installation plate 201 fixedly installed at the telescopic end of the electric telescopic rod 3. The electric telescopic rod 3 is evenly distributed between the installation base 101 and the installation plate 201, which supports the installation plate 201 and can lift the installation mechanism 200.
[0027] Specific examples Figure 1 and Figure 2 As shown, a pressure sensor 6 is fixedly installed on the bottom surface of the mounting plate 201. When the mounting plate 201 is lowered by the retraction of the electric telescopic rod 3, the pressure sensor 6 contacts the PCB board assembly 8 and detects a pressure signal. The pressure sensor transmits the pressure signal to the controller through the data line. The controller controls the electric telescopic rod 3 to stop retraction through the actuator, thereby completing the positioning of the detection mechanism 400. Since the height of the pressure sensor 6 is fixed, the distance between the detection mechanism 400 and the PCB board assembly 8 is determined after the mounting plate 201 is positioned.
[0028] Specific examples Figure 1 As shown, a detection mechanism 400 is provided on the bottom surface of the mounting plate 201, and the detection mechanism 400 includes a slide rail mechanism fixedly installed on the bottom surface of the mounting plate 201, combined with... Figure 1 and Figure 5As shown, the slide rail mechanism includes a first electric slide rail 401 fixedly installed on the bottom surface of the mounting plate 201, and a second electric slide rail 402 fixedly installed on the slider structure of the second electric slide rail 402. A laser displacement sensor 403 is fixedly installed on the slider structure of the second electric slide rail 402. The slide rail mechanism can drive the laser displacement sensor 403 to move at various detection points above the mounting base 101.
[0029] Furthermore, the mounting mechanism 200 also includes a top cover 202 fixedly mounted on the top of the mounting plate 201, and an industrial camera 5 is fixedly mounted on the side end face of the top cover 202 facing the mounting base 101, combined with Figure 1 and Figure 3 As shown, the mounting plate 201 has a through-slot structure inside, and the industrial camera 5 is installed inside the through-slot structure. The laser displacement sensor 403 and the industrial camera 5 work together. The laser displacement sensor 403 can be a ZLDS202 line laser scanner, and the industrial camera 5 can be a HY-M5 series 3D camera from Hsin Yang Technology. The laser displacement sensor 403 is responsible for accurately measuring the pin height, and the industrial camera 5 is used to capture the overall image of the PCB assembly 8. The detected data is transmitted to the host computer through the laser displacement sensor 403 and the industrial camera 5 via a data cable. The pin spacing and coplanarity of the PCB assembly 8 are analyzed, and the detection data is fed back to the production management system in real time to support real-time adjustment of the production line.
[0030] Specific examples Figure 2 As shown, the top surface of the mounting base 101 is provided with a limiting mechanism 700 and a PCB board assembly 8. The limiting mechanism 700 includes a pressure roller 701 rotatably disposed above the mounting base 101, and also includes a mounting shaft 702, a torsion spring 703, and a fixing block 704 symmetrically disposed at both ends of the pressure roller 701. Figure 3 and Figure 4 As shown, the fixing block 704 is fixedly installed on the top surface of the mounting base 101, and the mounting shaft 702 is fixedly connected to both ends of the pressure roller 701. The mounting shaft 702 is connected to the fixing block 704 by rotation. The mounting shaft 702 and the fixing block 704 support the pressure roller 701 and enable the pressure roller 701 to rotate above the mounting base 101.
[0031] Furthermore, the torsion spring 703 is fixedly connected to the outer end of the mounting shaft 702, and the fixing block 704 has a groove structure on the side end face facing the pressure roller 701 that cooperates with the torsion spring 703. The torsion spring 703 provides elastic support for the mounting shaft 702 and the pressure roller 701, so that when the pressure roller 701 and the mounting shaft 702 rotate relative to the fixing block 704, the torsion spring 703 generates a reverse force on the mounting shaft 702.
[0032] Specific examples Figure 2 and Figure 3 As shown, since the axial section of the pressure roller 701 is elliptical, and the support mechanism 100 also includes a positioning plate 102 fixedly installed on the top surface of the mounting base 101, and the positioning plate 102 is located on the side of the limiting mechanism 700 away from the detection mechanism 400, when the PCB board assembly 8 is inserted below the pressure roller 701, the pressure roller 701 is squeezed by the PCB board assembly 8, causing the pressure roller 701 to rotate around the axis of the mounting shaft 702 and compress the torsion spring 703. When one end of the PCB board assembly 8 is pressed against the outside of the positioning plate 102, the elastic force of the torsion spring 703 causes the pressure roller 701 to be pressed against the outside of the PCB board assembly 8 to limit and fix the PCB board assembly 8. Since the axial section of the pressure roller 701 is elliptical, it can adapt to PCB board assemblies 8 of different thicknesses, improving the versatility of the height detection device.
[0033] The working principle of this utility model is as follows: When using this online height detection device, first push the PCB board assembly 8 below the limiting mechanism 700, specifically as follows: Figure 2 and Figure 3 As shown, the PCB assembly 8 is pushed under the pressure roller 701 and one end of the PCB assembly 8 is pressed against the outside of the positioning plate 102. The PCB assembly 8 squeezes the pressure roller 701, causing the pressure roller 701 to rotate around the axis of the mounting shaft 702 and compress the torsion spring 703. The elastic force of the torsion spring 703 causes the pressure roller 701 to press against the top surface of the PCB assembly 8 to limit and fix the PCB assembly 8. At the same time, since the axial section of the pressure roller 701 is elliptical, the rotation of the pressure roller 701 can adapt to PCB assemblies 8 of different thicknesses, improving the versatility of the height detection device.
[0034] Specific examples Figure 1 and Figure 5 As shown, when the mounting plate 201 descends due to the retraction of the electric telescopic rod 3, the pressure sensing probe 6 contacts the PCB assembly 8. The pressure sensing probe 6 transmits the pressure signal to the controller via a data cable. The controller then controls the electric telescopic rod 3 to stop retracting via an actuator, thereby completing the positioning of the detection mechanism 400. Since the height of the pressure sensing probe 6 is fixed, the distance between the detection mechanism 400 and the PCB assembly 8 is determined after the mounting plate 201 is positioned. The slide rail mechanism can move the laser displacement sensor 403 at various detection points above the mounting base 101. The laser displacement sensor 403 and the industrial camera 5 work together. The laser displacement sensor 403 is responsible for accurately measuring the pin height, and the industrial camera 5 is used to capture an overall image of the PCB assembly 8. The data obtained by the laser displacement sensor 403 and the industrial camera 5 are transmitted to the host computer via a data cable to analyze the pin spacing and coplanarity of the PCB assembly 8.
[0035] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An online height detection device, comprising a support mechanism (100), characterized in that: The support mechanism (100) includes a mounting base (101), and an electric telescopic rod (3) is fixedly mounted on the top surface of the mounting base (101). An installation mechanism (200) is fixedly mounted on the top surface of the electric telescopic rod (3). The installation mechanism (200) includes a mounting plate (201) fixedly mounted on the telescopic end of the electric telescopic rod (3). A detection mechanism (400) is provided on the bottom surface of the mounting plate (201). The detection mechanism (400) includes a slide rail mechanism fixedly mounted on the bottom surface of the mounting plate (201). A laser displacement sensor (403) is provided at the bottom of the slide rail mechanism. The bottom end face of the mounting plate (201) is fixedly provided with a pressure sensing probe (6), and the top end face of the mounting base (101) is provided with a limiting mechanism (700) and a PCB board assembly (8). The limiting mechanism (700) includes a pressure roller (701) rotatably disposed above the mounting base (101).
2. The online height detection device according to claim 1, characterized in that: The support mechanism (100) also includes a positioning plate (102) fixedly installed on the top surface of the mounting base (101), the positioning plate (102) being located on the side of the limiting mechanism (700) away from the detection mechanism (400).
3. The online height detection device according to claim 2, characterized in that: The mounting mechanism (200) also includes a top cover (202) fixedly mounted on the top of the mounting plate (201), and an industrial camera (5) is fixedly mounted on the side end face of the top cover (202) facing the mounting base (101).
4. The online height detection device according to claim 3, characterized in that: The mounting plate (201) has a through-slot structure inside, and the industrial camera (5) is located inside the through-slot structure.
5. The online height detection device according to claim 4, characterized in that: The slide rail mechanism includes a first electric slide rail (401) fixedly installed on the bottom surface of the mounting plate (201), and a second electric slide rail (402) fixedly installed on the slider structure of the second electric slide rail (402), and a laser displacement sensor (403) fixedly installed on the slider structure of the second electric slide rail (402).
6. The online height detection device according to claim 5, characterized in that: The limiting mechanism (700) also includes a mounting shaft (702), a torsion spring (703) and a fixing block (704) symmetrically arranged at both ends of the pressure roller (701). The fixing block (704) is fixedly installed on the top surface of the mounting base (101). The axial section of the pressure roller (701) is elliptical.
7. The online height detection device according to claim 6, characterized in that: The mounting shaft (702) is fixedly connected to both ends of the pressure roller (701), and the mounting shaft (702) is connected to the fixed block (704) by rotation.
8. The online height detection device according to claim 7, characterized in that: The torsion spring (703) is fixedly connected to the outer end of the mounting shaft (702), and the fixing block (704) has a groove structure on the side end face facing the pressure roller (701) that cooperates with the torsion spring (703).