Circuit board production detection tool

Abstract

The invention relates to a circuit board production detection tool which comprises a base provided with a rack, the rack is provided with a clamping mechanism and a detection mechanism, the clamping mechanism comprises a [-shaped frame, and the inner side wall of the [-shaped frame is provided with a clamping groove; the detection mechanism comprises a C-shaped plate driven by a hydraulic rod, a mounting plate is arranged in an opening of the C-shaped plate, detection probes are arranged on the upper end face and the lower end face of the mounting plate respectively, and rotating shafts are arranged at the two ends of the mounting plate; a driving mechanism for driving the clamping mechanism and the detection mechanism is further arranged on the rack, the driving mechanism comprises a motor arranged on the rack, the motor is connected with the n-shaped frame through a driving shaft, a transmission shaft corresponding to the driving shaft is arranged on the rack, belt wheels are arranged on the driving shaft and the transmission shaft, and the belt wheels are connected with the clamping mechanism and the detection mechanism. Wherein the two groups of belt pulleys which correspond to each other up and down are connected through a transmission belt, a gear I is arranged on the transmission shaft, and a gear II meshed with the gear I is arranged on the rotating shaft. According to the invention, different end faces of the circuit board can be detected.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing, and in particular to a circuit board manufacturing and testing fixture. Background Art

[0002] Circuit boards are divided into single-sided boards and double-sided boards. Double-sided boards are an extension of single-sided boards. The principle of circuit board testing equipment is to use metal probes to connect to the pads or test points on the circuit board to perform conductivity tests, thereby detecting whether the circuit is conducting normally.

[0003] For example, a circuit board production inspection fixture with patent number CN118091378B flips the circuit board and moves the inspection probe downward to inspect the upper and lower end faces of the circuit board. However, this device has the following defects when in use: because the position of its inspection probe is fixed, the downward-moving inspection probe can only inspect fixed points on the upper and lower end faces of the circuit board after it is flipped. When the inspection points on the upper and lower end faces of the circuit board do not correspond, it cannot complete the inspection work well, which affects the inspection work and seriously affects the inspection efficiency and effect. Summary of the Invention

[0004] The purpose of this invention is to provide a circuit board production and testing fixture.

[0005] The technical problem of this invention is mainly solved by the following technical solution:

[0006] A circuit board production and testing fixture includes a base with two sets of racks, a clamping mechanism for fixing circuit boards on the racks, and a testing mechanism for testing the circuit boards above the clamping mechanism.

[0007] The clamping mechanism includes a U-shaped frame, and the inner side wall of the U-shaped frame is provided with a slot for fixing the edge of the circuit board;

[0008] The detection mechanism includes a C-shaped plate with an opening facing downward and driven by a hydraulic rod. A mounting plate is provided at the bottom of the opening of the C-shaped plate. Detection probes that can detect different ends of the circuit board are respectively provided on the upper and lower ends of the mounting plate. Rotating shafts that pass through the sidewalls of the C-shaped plate are provided at both ends of the mounting plate.

[0009] The frame is also equipped with a drive mechanism that drives the clamping mechanism and the detection mechanism to rotate in the same direction and at the same speed. The drive mechanism includes a motor mounted on the frame. The motor is connected to the frame via a drive shaft. A transmission shaft corresponding to the drive shaft is mounted on the frame above the rotating shaft. Both the drive shaft and the transmission shaft are equipped with pulleys. The two sets of pulleys are connected by a transmission belt. A gear I is also mounted at the end of the transmission shaft. A gear II is mounted on the rotating shaft that is located below and meshes with the corresponding gear I.

[0010] Preferably, both ends of the shaped frame are provided with locking mechanisms that can seal the corresponding openings of the slots. The locking mechanism includes a locking plate that is movably fixed to the end of the shaped frame via a fixed shaft. The locking plate is located on the end of the shaped frame outside the slot. The other end of the locking plate is provided with a handle. The end of the shaped frame is provided with a magnetic connection part that is magnetically connected to the locking plate.

[0011] Preferably, a horizontal plate for fixing hydraulic rods is provided above the frame.

[0012] Preferably, the two sets of gears II are located between the two sets of drive belts.

[0013] Preferably, the outer wall of the C-shaped plate is provided with a positioning mechanism for fixing the rotating shaft. The positioning mechanism includes an electric push rod provided on the outer wall of the C-shaped plate. A positioning block is provided on the output shaft of the electric push rod. Grooves corresponding to the positioning blocks are provided on both the upper and lower end faces of the rotating shaft. The bottom end of the positioning block extends into the upper groove.

[0014] Preferably, the side wall of the shaped plate is provided with a bearing I for fixing the rotating shaft, and the frame is provided with a bearing II for fixing the corresponding drive shaft and transmission shaft.

[0015] Preferably, the mounting plate has a base plate for fixing the corresponding detection probe on both the upper and lower ends. The detection probe is located directly above the opening of the shaped frame, and the length of the detection probe is greater than the radius of gear II.

[0016] The beneficial effects of this invention are as follows: This invention can select a base plate with corresponding specification detection probes and install them on the corresponding end face of the mounting plate in the detection mechanism according to the distribution position of the detection points on the upper and lower end faces of the circuit board on the clamping mechanism. The detection mechanism moves downward and drives the detection probes on the lower base plate to contact the detection points on the top surface of the circuit board to perform detection. At the same time, when the detection mechanism is reset, the driving mechanism drives the circuit board on the clamping mechanism and the base plate and detection probe on the detection mechanism to rotate 180 degrees in opposite directions. Then, the downward moving detection mechanism drives the detection probes on the lower base plate to contact the detection points on the top surface of the circuit board after it is flipped to perform detection. This allows for the detection of circuit boards with different detection point positions on the upper and lower end faces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a front view of the present invention.

[0019] In the diagram: 1. Base, 2. Frame, 3. Clamping mechanism, 31. C-shaped frame, 32. Slot, 4. Detection mechanism, 41. Hydraulic rod, 42. C-shaped plate, 43. Mounting plate, 44. Base plate, 45. Detection probe, 46. Rotating shaft, 5. Drive mechanism, 51. Motor, 52. Drive shaft, 53. Transmission shaft, 54. Pulley, 55. Transmission belt, 56. Gear I, 57. Gear II, 6. Locking mechanism, 61. Locking plate, 62. Fixed shaft, 63. Handle, 7. Horizontal plate, 8. Positioning mechanism, 81. Electric push rod, 82. Positioning block, 83. Groove. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] A circuit board production and testing fixture includes a base 1 on which two sets of frames 2 are mounted. A clamping mechanism 3 for fixing circuit boards is provided on the frame 2, and a testing mechanism 4 for testing the circuit boards is provided above the clamping mechanism 3.

[0022] The clamping mechanism 3 includes a U-shaped frame 31, and the inner side wall of the U-shaped frame 31 is provided with a slot 32 for fixing the edge of the circuit board;

[0023] The detection mechanism 4 includes a U-shaped plate 42 with its opening facing downward and driven by a hydraulic rod 41. A horizontal plate 7 for fixing the hydraulic rod 41 is provided above the frame 2. A mounting plate 43 is provided at the bottom of the opening of the U-shaped plate 42. Detection probes 45 for detecting different ends of the circuit board are respectively provided on the upper and lower end faces of the mounting plate 43. Rotating shafts 46 passing through the side walls of the U-shaped plate 42 are provided at both ends of the mounting plate 43.

[0024] The frame 2 is also equipped with a drive mechanism 5 that drives the clamping mechanism 3 and the detection mechanism 4 to rotate in the same direction and at the same speed. The drive mechanism 5 includes a motor 51 mounted on the frame 2. The motor 51 is connected to the frame 31 via a drive shaft 52. A transmission shaft 53 corresponding to the drive shaft 52 is mounted on the frame 2 above the rotating shaft 46. Both the drive shaft 52 and the transmission shaft 53 are equipped with pulleys 54. The two sets of pulleys 54 are connected by a transmission belt 55. A gear I 56 is mounted at the end of the transmission shaft 53. A gear II 57 is mounted on the rotating shaft 46, located below and meshing with the corresponding gear I 56. Figure 1 , 2 As shown, the two sets of gears II57 are located between the two sets of transmission belts 55.

[0025] Both ends of the shaped frame 31 are provided with locking mechanisms 6 that can seal the corresponding openings of the slots 32. The locking mechanism 6 includes a locking plate 61 that is movably fixed to the end of the shaped frame 31 via a fixed shaft 62. The locking plate 61 is located on the end of the shaped frame 31 outside the slots 32. The other end of the locking plate 61 is provided with a handle 63. The end of the shaped frame 31 is provided with a magnetic connection part that is magnetically connected to the locking plate 61.

[0026] The outer wall of the C-shaped plate 42 is provided with a positioning mechanism 8 for fixing the rotating shaft 46. The positioning mechanism 8 includes an electric push rod 81 provided on the outer wall of the C-shaped plate 42. A positioning block 82 is provided on the output shaft of the electric push rod 81. Grooves 83 corresponding to the positioning blocks 82 are provided on both the upper and lower end faces of the rotating shaft 46. The bottom end of the positioning block 82 extends into the upper groove 83.

[0027] In this embodiment, a bearing I for fixing the rotating shaft 46 is provided on the side wall of the C-shaped plate 42, and a bearing II for fixing the corresponding drive shaft 52 and transmission shaft 53 is provided on the frame 2.

[0028] like Figure 1 , 2 As shown, the mounting plate 43 has a base plate 44 on both the upper and lower ends for fixing the corresponding detection probe 45. The detection probe 45 is located directly above the opening of the bracket 31, and the length of the detection probe 45 is greater than the radius of the gear II 57.

[0029] The method of using this invention is as follows: The circuit board is slid into the opening of the 31-shaped frame, and the edge of the circuit board is inserted into the corresponding slot 32 to fix it. Then, the handle 63 is rotated to drive the locking plate 61 to drive the fixing shaft 62 to rotate in the hole in the side wall of the 31-shaped frame. Finally, the locking plate 61 is moved to the front side of the circuit board to lock and fix it, preventing it from sliding out of the opening of the 31-shaped frame and the slot 32. At the same time, the magnetic connection part at the end of the 31-shaped frame is magnetically connected to the locking plate 61 to prevent the locking plate 61 from rotating in the hole in the side wall of the 31-shaped frame due to the influence of its gravity, which would prevent the locking mechanism 6 from properly locking and fixing the circuit board on the 31-shaped frame.

[0030] The electric push rod 81 drives the positioning block 82 to move down and engage with the groove 83 above the rotating shaft 46, thereby positioning the rotating shaft 46 and preventing the mounting plate 43 from driving the rotating shaft 46 to rotate on the bearing I on the U-shaped plate 42. This keeps the mounting plate 43 in a horizontal position. At this time, the base plate 44 with corresponding specification detection probes 45 is installed on the upper and lower end faces of the mounting plate 43. That is, the distribution position of the detection probes 45 on the lower base plate 44 corresponds to the detection point on the top surface of the circuit board, and the distribution position of the detection probes 45 on the upper base plate 44 corresponds to the detection point on the bottom surface of the circuit board. Then, the hydraulic rod 41 drives the U-shaped plate 42 to move the mounting plate 43 and the base plate 44. The detection probe 45, positioning mechanism 8, and rotating shaft 46 move downwards, during which gear II57 at the end of rotating shaft 46 separates from gear I56. As the mounting plate 43 and base plate 44 move downwards, the detection probe 45 below contacts the detection point on the top surface of the circuit board to perform detection. After the detection is completed, the hydraulic rod 41 drives the detection mechanism 4, positioning mechanism 8, and gear II57 to move upwards and reset. During the above process, the rotating shaft 46 is fixed by the positioning mechanism 8 to prevent it from driving gear II57 to rotate, so that the teeth of gear II57 correspond to the tooth grooves on gear I56. After gear II57 moves upwards and resets, it can easily mesh with gear I56 to restore the original state.

[0031] When the bottom surface of the circuit board needs to be inspected, the electric push rod 81 first drives the positioning block 82 to slide out of the upper groove 83. Then, the motor 51 drives the shaped frame 31 and the circuit board fixed inside it to rotate 180 degrees through the drive shaft 52. At this time, the rotating drive shaft 52 drives the upper drive shaft 53 to rotate in the same direction and at the same speed through the pulley 54 and the transmission belt 55. The drive shaft 53 also drives the rotating shaft 46 to rotate on the bearing I in the side wall of the shaped plate 42 through gear I 56 and gear II 57. The rotating shaft 46 also drives the mounting plate 43, the base plate 44 and the detection probe 45 to rotate 180 degrees. At this time, the detection probe on the bottom plate 44 rotates to the lower part. The probes 45 are positioned to correspond to the detection points on the top surface of the circuit board after flipping. This allows the drive mechanism 5 to simultaneously drive the circuit board on the clamping mechanism 3 and the base plate 44 and detection probes 45 on the detection mechanism 4 to rotate 180 degrees in opposite directions, while maintaining the same speed. Then, the electric push rod 81 drives the positioning block 82 to slide down into the groove 83 above, thus fixing the rotating shaft 46, mounting plate 43, base plate 44, and detection probes 45. This process is repeated, with the hydraulic rod 41 driving the detection probes 45 on the base plate 44 of the detection mechanism 4 to move down and perform detection on the top surface of the circuit board.

[0032] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A circuit board production and testing fixture, comprising a base on which two sets of frames are mounted, a clamping mechanism for fixing circuit boards is provided on the frames, and a testing mechanism for testing the circuit boards is provided above the clamping mechanism, characterized in that: The clamping mechanism includes a U-shaped frame, and the inner side wall of the U-shaped frame is provided with a slot for fixing the edge of the circuit board; The detection mechanism includes a C-shaped plate with an opening facing downward and driven by a hydraulic rod. A mounting plate is provided at the bottom of the opening of the C-shaped plate. Detection probes that can detect different ends of the circuit board are respectively provided on the upper and lower ends of the mounting plate. Rotating shafts that pass through the sidewalls of the C-shaped plate are provided at both ends of the mounting plate. The frame is also equipped with a drive mechanism that drives the clamping mechanism and the detection mechanism to rotate in the same direction and at the same speed. The drive mechanism includes a motor mounted on the frame. The motor is connected to the frame via a drive shaft. A transmission shaft corresponding to the drive shaft is mounted on the frame above the rotating shaft. Both the drive shaft and the transmission shaft are equipped with pulleys. The two sets of pulleys are connected by a transmission belt. A gear I is also mounted at the end of the transmission shaft. A gear II is mounted on the rotating shaft that is located below and meshes with the corresponding gear I.

2. The circuit board production and testing fixture according to claim 1, characterized in that: Both ends of the shaped frame are provided with locking mechanisms that can seal the corresponding openings of the slots. The locking mechanism includes a locking plate that is movably fixed to the end of the shaped frame via a fixed shaft. The locking plate is located on the end of the shaped frame outside the slot. The other end of the locking plate is provided with a handle. The end of the shaped frame is provided with a magnetic connection part that is magnetically connected to the locking plate.

3. The circuit board production and testing fixture according to claim 1, characterized in that: A horizontal plate for fixing hydraulic rods is installed above the frame.

4. The circuit board production and testing fixture according to claim 1, characterized in that: Two sets of gears II are located between two sets of drive belts.

5. The circuit board production and testing fixture according to claim 1, characterized in that: The outer wall of the shaped plate is provided with a positioning mechanism for fixing the rotating shaft. The positioning mechanism includes an electric push rod provided on the outer wall of the shaped plate. A positioning block is provided on the output shaft of the electric push rod. Grooves corresponding to the positioning blocks are provided on both the upper and lower end faces of the rotating shaft. The bottom end of the positioning block extends into the upper groove.

6. The circuit board production and testing fixture according to claim 1, characterized in that: The side wall of the shaped plate is provided with a bearing I for fixing the rotating shaft, and the frame is provided with a bearing II for fixing the corresponding drive shaft and transmission shaft.

7. The circuit board production and testing fixture according to claim 1, characterized in that: The mounting plate has base plates on both the upper and lower ends for fixing corresponding detection probes. The detection probes are located directly above the opening of the shaped frame, and the length of the detection probes is greater than the radius of gear II.

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