SMT (surface mount technology) detection device for PCB (printed circuit board)

Abstract

The utility model discloses an SMT (Surface Mount Technology) detection device for a PCB (Printed Circuit Board), relates to the technical field of circuit board detection, and aims to solve the problem that when the existing optical detection equipment is used for carrying out double-sided detection on the circuit board, a worker needs to manually carry out annular surface detection. A limiting mechanism is arranged on the placing frame, and an angle positioning mechanism is arranged between the placing frame and the moving frame; through mutual cooperation of a steering motor, a worm gear and a worm, the placement frame rotationally connected to the movable frame is controlled to rotate, so that after a circuit board in the placement frame is subjected to optical detection of the detection machine body, the placement frame can rotate by 180 degrees and turn over to the reverse side, and optical detection is carried out again; compared with the prior art in which a worker needs to manually turn over the circuit board, the circuit board turnover device is convenient, fast, time-saving and labor-saving in structure.

Description

Technical Field

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

[0002] The existing AOI (automatic optical inspection) equipment requires workers to perform multiple manual operations to conduct inspections when conducting optical inspections on circuit boards. After placing the circuit board on the mobile frame and inspecting the front side, workers are required to manually rotate the circuit board 180 degrees before conducting another inspection. This is time-consuming and labor-intensive and needs to be improved.

[0003] Therefore, the present application provides a SMT detection device for a PCB circuit board to meet the needs. Utility Model Content

[0004] The purpose of the present application is to provide a SMT inspection device for a PCB circuit board, aiming to solve the problem that when the existing optical inspection equipment performs double-sided inspection on the circuit board, the staff needs to manually perform the ring surface.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a SMT detection device for a PCB circuit board, a detection machine body, a mobile frame is provided in the detection machine body, a mobile component is provided in the detection machine body, the mobile component is connected to the mobile frame and is used to adjust the position of the mobile frame, a placement frame is rotatably connected to the mobile frame, a limiting mechanism is provided on the placement frame, and an angle positioning mechanism is provided between the placement frame and the mobile frame;

[0006] The angle positioning mechanism also includes a worm wheel, a worm, and a steering motor. The steering motor is arranged inside the detection machine body. A steering member is provided at the outward end of the movable frame. The steering member is provided with an internal space. The worm wheel is rotatably connected to the inner wall of the internal space. The worm wheel is connected to the placement frame. The worm is rotatably connected to the internal space. The worm and the worm wheel are meshed with each other. The worm and the steering motor are connected via a connector.

[0007] Preferably, the connector includes a connecting piece and a steering block, the steering block is a rectangular block, the connecting piece is arranged on the driving shaft of the steering motor, and a rectangular groove is provided at the end of the connecting piece, the rectangular groove is adapted to the steering block, and a sliding groove for the steering block to slide is provided inside the detection machine body.

[0008] Preferably, the limiting mechanism includes a limiting block, a clamping block, and a spring. The limiting block is arranged on the inner wall of the placing frame. The bottom surface of the limiting block is provided with a clamping groove. The spring is pressed in the clamping groove. The free end of the spring is connected to the clamping block.

[0009] Preferably, the pressing block is an arc-shaped block, and the pressing block is made of rubber material to protect the circuit board. While protecting, it can also play an independent adaptability and can adapt to circuit boards of various thicknesses.

[0010] Preferably, the inner wall of the placement frame is provided with a protrusion, the top surface of the protrusion is provided with a guide wheel, and the guide wheel is made of rubber material, so as to protect the circuit board from scratches during the placement process.

[0011] Preferably, a guide ramp is provided at the right end of the placement frame for quick placement of the circuit board, which plays a guiding role when placing the circuit board and assists the board placement operation.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] The utility model controls the rotation of a placement frame connected to a movable frame through the mutual cooperation between a steering motor and a worm gear, so that after the circuit board in the placement frame passes through the optical inspection of a detection machine body, the placement frame can be rotated 180 degrees and turned over to the reverse side for optical inspection again. Compared with the prior art which requires workers to manually turn over the circuit board, the structure of the present design is convenient, fast, and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the mobile frame structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the worm structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the placement frame structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the connector of the utility model;

[0022] Figure 8 It is a schematic diagram of the steering member and the movable frame structure of the utility model.

[0023] In the figure: 1. detection machine body; 2. moving frame; 3. placing frame; 31. guide ramp; 4. limit block; 41. clamping groove; 5. clamping block; 6. spring; 7. steering member; 8. worm gear; 9. worm; 91. steering block; 10. steering motor; 11. connecting member. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Reference Figure 1-8 The SMT detection device for a PCB circuit board shown in the figure includes a detection machine body 1, a mobile frame 2, and a placement frame 3. The mobile frame 2 is slidably connected in the detection channel of the detection machine body 1. The mobile frame 2 is controlled to run in the detection channel by a moving component. The mobile frame 2 is moved to under the detection module of the detection machine body 1. In order to save the labor intensity of the staff, the placement frame 3 is rotatably connected to the mobile frame 2. The placement frame 3 cooperates with the limiting mechanism to limit the installation of the circuit board, so that under the drive of the angle positioning mechanism, after the placement frame 3 rotates 180 degrees, the circuit board will not fall off. The steering motor 10 used for the rotation angle is arranged in the detection machine body 1, and the angle positioning mechanism is connected to the steering motor 10.

[0026] The overall structure of the placement frame 3 is a return frame (such as Figure 5 ), a guiding ramp 31 is provided at the right end of the placement frame 3 to assist the staff in placing the circuit board. A limiting mechanism is provided on the inner wall of the placement frame 3. The limiting block 4 of the limiting mechanism is fixed on the inner wall of the placement frame 3. The bottom surface of each group of limiting blocks 4 is provided with a clamping groove 41 for placing a spring 6. The free end of the spring 6 is connected to the clamping block 5. In order to facilitate the insertion of the circuit board and limit it, the clamping block 5 is arc-shaped and made of rubber. Therefore, during use, the wear of the circuit board is reduced.

[0027] In order to assist in taking the circuit board, a guide wheel is hinged on the protrusion of each set of placement frames 3. The guide wheel is made of rubber and cooperates with the pressing block 5 to assist in placing and taking the circuit board when in use.

[0028] A slide groove is provided inside the detection channel of the detection machine body 1, a steering block 91 is provided at one end of the worm 9 in the angle positioning mechanism and is slidably connected in the slide groove, a connecting piece 11 is provided on the driving shaft of the steering motor 10, and a rectangular groove is provided at the other end of the connecting piece 11, and the rectangular groove is adapted to the steering block 91. By controlling the rotation angle of the steering motor 10, the opening direction of the rectangular groove can still be directed toward the slide groove after use, so that the steering block 91 can be docked with the rectangular groove, and both ends of the rectangular groove are transparent, thereby achieving the purpose of rotating the placement frame 3.

[0029] A steering member 7 is provided on the end face of the movable frame 2, and a worm 9 is rotatably connected to its internal space. A coaxial worm wheel 8 is provided on each set of placement frames 3, and the worm wheel 8 and the worm 9 are meshed with each other. Therefore, driven by the steering motor 10, the worm 9 rotates and drives the worm wheel 8 to rotate 180°, and the angle positioning is achieved through the self-locking property of the worm wheel 8 and the worm 9.

[0030] The practical working principle of the present invention is as follows: the circuit board is inserted into the guide ramp 31 of the placement frame 3, and the guiding installation of the circuit board is completed through the guide wheel and the limit mechanism. The clamping block 5 is assisted by the spring 6 in the limit block 4 to realize the positioning of the circuit. Then, driven by the moving component in the detection machine body 1, the moving frame 2 is moved in the detection channel, and then it is detected. After the detection is completed, the moving frame 2 is pushed outward, and then the steering block 91 is matched with the rectangular groove at the end of the connecting piece 11 to complete the docking. Then, driven by the steering motor 10, the worm 9 is driven to rotate in the steering piece 7, and the rotating worm 9 drives the worm wheel 8 to rotate to realize steering, saving the manual flipping time of the staff, and then the detection is continued under the drive of the moving component.

[0031] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0032] Components not described in detail herein are prior art.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A SMT inspection device for a PCB circuit board, comprising an inspection machine body (1), wherein a movable frame (2) is arranged inside the inspection machine body (1), wherein a movable component is arranged inside the inspection machine body (1), wherein the movable component is connected to the movable frame (2) and is used to adjust the position of the movable frame (2), and wherein: The mobile frame (2) is rotatably connected to a placement frame (3), the placement frame (3) is provided with a limiting mechanism, and an angle positioning mechanism is provided between the placement frame (3) and the mobile frame (2); The angle positioning mechanism further comprises a worm wheel (8), a worm (9), and a steering motor (10); the steering motor (10) is arranged inside the detection machine body (1); a steering member (7) is arranged at the outward end of the movable frame (2); the steering member (7) is provided with an internal space; the worm wheel (8) is rotatably connected to the inner wall of the internal space; the worm wheel (8) is connected to the placement frame (3); the worm (9) is rotatably connected to the internal space; the worm (9) and the worm wheel (8) are meshed with each other; and the worm (9) and the steering motor (10) are connected via a connector.

2. The SMT detection device for a PCB circuit board according to claim 1, characterized in that: The connector comprises a connecting piece (11) and a steering block (91); the steering block (91) is a rectangular block; the connecting piece (11) is arranged on a driving shaft of the steering motor (10); a rectangular groove is arranged at an end of the connecting piece (11); the rectangular groove is matched with the steering block (91); and a slide groove for the steering block (91) to slide is arranged inside the detection machine body (1).

3. The SMT detection device for a PCB circuit board according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (4), a pressing block (5), and a spring (6); the limiting block (4) is arranged on the inner wall of the placing frame (3); a pressing groove (41) is arranged on the bottom surface of the limiting block (4); the spring (6) is pressed into the pressing groove (41); and the free end of the spring (6) is connected to the pressing block (5).

4. The SMT detection device for a PCB circuit board according to claim 3, characterized in that: The pressing block (5) is an arc-shaped block and is made of rubber material, thereby protecting the circuit board.

5. The SMT detection device for a PCB circuit board according to claim 1, characterized in that: The inner wall of the placement frame (3) is provided with a protrusion, and the top surface of the protrusion is provided with a guide wheel, and the guide wheel is made of rubber material.

6. The SMT detection device for a PCB circuit board according to claim 1, characterized in that: A guiding ramp (31) is provided at the right end of the placement frame (3) for quickly placing the circuit board.

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