Fixing device for PCB detection

Abstract

The utility model discloses a fixing device for PCB (printed circuit board) detection, which comprises a bottom plate, a longitudinal moving device arranged on the bottom plate, a limiting plate fixedly connected to the rear end of the bottom plate, scale marks arranged on one side of the limiting plate and one side of the longitudinal moving device, a moving plate fixedly connected to the longitudinal moving device, and two fixing mechanisms oppositely arranged on the moving plate. A transverse moving device is arranged below the fixing mechanism on the right side, a rotating mechanism is arranged on one side of the fixing mechanism on the left side, PCBs of different sizes are clamped and fixed through cooperative use of the transverse moving device and the fixing mechanisms, and the fixing mechanisms are clamped in the middles of the PCBs through arrangement of a longitudinal moving device; damping assemblies and fixing plates in the fixing mechanisms are used in cooperation with rubber pads on the bottom walls of fixing frames, so that the PCBs can be effectively prevented from being damaged in the fixing process; through the arrangement of the rotating mechanism, different surfaces of the PCB can be detected without shutdown in the detection process, and the production efficiency is improved.

Description

Technical Field

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

[0002] PCB, or printed circuit board, is a key component that supports and interconnects electronic components in electronic devices. In order to ensure that the PCB board can meet the expected performance and quality requirements during the design, manufacturing, and assembly stages, it needs to be tested, and the PCB board needs to be fixed during the testing process.

[0003] The existing fixing device for PCB board inspection cannot fix PCB boards of different sizes, and its practicality is relatively poor. In addition, when the existing fixing device clamps and fixes the PCB board, the clamping force is too large, which causes damage to the PCB board. When the reverse side of the PCB board needs to be inspected, the PCB board needs to be removed and manually turned over before being fixed, which is complicated to operate and has low production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a fixing device for PCB board detection to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fixing device for PCB board detection comprises a bottom plate, a longitudinal moving device is arranged on the bottom plate, a limit plate is fixedly connected to the rear end of the bottom plate, scale lines are arranged on one side of the limit plate and the longitudinal moving device, a moving plate is fixedly connected to the longitudinal moving device, two fixing mechanisms are arranged opposite to each other on the moving plate, a transverse moving device is arranged below the fixing mechanism on the right side, and a rotating mechanism is arranged on one side of the fixing mechanism on the left side; the fixing mechanism comprises a mounting plate, a rotating shaft is rotatably connected inside the mounting plate, one end of the rotating shaft is fixedly connected to a fixing frame, an electric push rod is fixedly connected to the top of the fixing frame, a shock absorbing assembly is fixedly connected to the bottom of the electric push rod, and a fixing plate is fixedly connected to the bottom of the shock absorbing assembly.

[0007] As a further solution of the utility model: a first groove and a second groove are provided on two sides of the bottom plate opposite to each other, a third groove is provided at the front end of the bottom plate, and the third groove is connected with the first groove and the second groove.

[0008] As a further solution of the utility model: the longitudinal moving device includes a first screw rod rotatably connected in the first groove, one end of the first screw rod passes through the base plate and is fixedly connected to the output end of the first motor, the first motor is fixedly connected to the base plate, the first screw rod is fixedly connected to a first pulley, the second screw rod is rotatably connected in the second groove, the second screw rod is fixedly connected to a second pulley, the first pulley and the second pulley are sleeved with a first belt, the first screw rod is sleeved with a first screw sleeve, the first screw sleeve is threadedly connected to the first screw rod, the second screw rod is sleeved with a second screw sleeve, the second screw sleeve is arranged opposite to the first screw sleeve, and the second screw sleeve is threadedly connected to the second screw rod.

[0009] As a further solution of the utility model: a movable plate is provided above the top ends of the first screw sleeve and the second screw sleeve, and the movable plate is fixedly connected to the first screw sleeve and the second screw sleeve.

[0010] As a further solution of the utility model: the shock absorbing assembly includes a connecting plate fixedly connected to the electric push rod, a damper is fixedly connected below the connecting plate, the damper is fixedly connected to the fixing plate below, and a spring is provided on the outer sleeve of the damper.

[0011] As a further solution of the utility model: a rubber pad is fixedly connected to the bottom wall of the fixing plate and the fixing frame.

[0012] As a further solution of the utility model: a fourth groove is provided on the right side of the movable plate, the lateral moving device includes a second motor fixedly connected in the fourth groove, a third screw rod is fixedly connected to the output end of the second motor, the other end of the third screw rod is rotatably connected to the fourth groove, a sliding rod is provided under the third screw rod, the sliding rod is fixedly connected to the fourth groove, a sliding block is sleeved on the third screw rod and the sliding rod, an internal threaded through hole and a smooth through hole are provided in the sliding block, the sliding block is threadedly connected to the third screw rod through the internal threaded through hole, and is slidably connected to the sliding rod through the smooth through hole.

[0013] As a further solution of the utility model: the mounting plate on the left is fixedly connected to the movable plate, and the mounting plate on the right is fixedly connected to the sliding block.

[0014] As a further solution of the utility model: the rotating mechanism includes a third pulley fixedly connected to the rotating shaft, a fourth pulley is provided opposite to the third pulley below, a second belt is provided on the third pulley and the fourth pulley, the fourth pulley is fixedly connected to the output end of the third motor through the rotating shaft, a motor bracket is provided below the third motor, and the motor bracket is fixedly connected to the third motor.

[0015] Compared with the prior art, the utility model has the following beneficial effects: a fixing device for PCB board detection realizes clamping and fixing of PCB boards of different lengths and thicknesses through the coordinated use of a lateral moving device and an electric push rod in a fixing mechanism; a longitudinal moving device is provided so that the center line of the fixing mechanism is adjusted to a position of half the width of the PCB board, so that the PCB board on the fixing mechanism is symmetrically balanced, the clamping and fixing of the PCB board is made more stable, and PCB boards of different sizes are stably clamped and fixed as a whole; the damping assembly in the fixing mechanism and the rubber pads on the fixing plate and the bottom wall of the fixing frame are used in coordination so that the PCB board can be effectively prevented from being damaged during the fixing process; and a rotating mechanism is provided so that different surfaces of the PCB board can be continuously inspected without stopping during the inspection process, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A top view of a fixture for PCB board inspection.

[0017] Figure 2 It is a partial cross-sectional view of the left side view of a fixing device for PCB board detection.

[0018] Figure 3 This is an enlarged view of point A in a fixture used for PCB board inspection.

[0019] In the figure: 1, bottom plate; 11, first groove; 12, second groove; 13, third groove; 2, longitudinal moving device; 21, first screw rod; 22, first motor; 23, second screw rod; 24, first pulley; 25, second pulley; 26, first belt; 27, first screw sleeve; 28, second screw sleeve; 3, limit plate; 4, scale line; 5, moving plate; 51, fourth groove; 6, fixing mechanism; 61, mounting plate; 62, Rotating shaft; 63, fixing frame; 64, electric push rod; 65, fixing plate; 66, shock absorbing assembly; 661, connecting plate; 662, damper; 663, spring; 67, rubber pad; 7, lateral moving device; 71, second motor; 72, third screw rod; 73, sliding rod; 74, sliding block; 8, rotating mechanism; 81, third pulley; 82, fourth pulley; 83, second belt; 84, third motor; 85, motor bracket. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1 to 3 In an embodiment of the utility model, a fixing device for PCB board detection includes a bottom plate 1, a longitudinal moving device 2 is provided on the bottom plate 1, a limit plate 3 is fixedly connected to the rear end of the bottom plate 1, a scale line 4 is provided on one side of the limit plate 3 and the longitudinal moving device 2, a moving plate 5 is fixedly connected to the longitudinal moving device 2, two fixing mechanisms 6 are oppositely provided on the moving plate 5, a lateral moving device 7 is provided below the fixing mechanism 6 on the right side, and a rotating mechanism 8 is provided on one side of the fixing mechanism 6 on the left side.

[0022] The utility model can clamp and fix PCB boards of different sizes. In order to make the clamping and fixing of the PCB board more stable, it is necessary to ensure that the fixing mechanism 6 is clamped in the middle position of the PCB board as much as possible so that the PCB board on the fixing mechanism 6 is symmetrically balanced. Therefore, the utility model is provided with a longitudinal moving device 2 that can adjust the position of the fixing mechanism 6. A first groove 11 and a second groove 12 are provided on both sides of the base plate 1 relative to each other, a third groove 13 is provided at the front end of the base plate 1, and the third groove 13 is connected with the first groove 11 and the second groove 12. The longitudinal moving device 2 includes a first screw rod 21 rotatably connected to the first groove 11, one end of the first screw rod 21 passes through the base plate 1 and is fixedly connected to the output end of the first motor 22, the first motor 22 is fixedly connected to the base plate 1, a first pulley 24 is fixedly connected to the first screw rod 21, the second screw rod 23 is rotatably connected in the second groove 12, a second pulley 25 is fixedly connected to the second screw rod 23, a belt 26 is sleeved on the first pulley 24 and the second pulley 25, a first screw sleeve 27 is sleeved on the first screw rod 21, the first screw sleeve 27 is threadedly connected to the first screw rod 21, a second screw sleeve 28 is sleeved on the second screw rod 23, the second screw sleeve 28 is arranged opposite to the first screw sleeve 27, and the second screw sleeve 28 is threadedly connected to the second screw rod 23. A moving block 5 is provided above the top of the first screw sleeve 27 and the second screw sleeve 28, and the moving block 5 is fixedly connected to the first screw sleeve 27 and the second screw sleeve 28. When it is necessary to fix PCB boards of different widths, the position of the fixing mechanism 6 is first adjusted according to the width of the PCB board, and the fixing mechanism 6 is adjusted to the middle position of the PCB board. During the adjustment, accurate adjustment can be performed according to the scale line 4. During the adjustment, the first motor 22 is first started, the first motor 22 drives the first screw rod 21 to rotate, the first screw rod 21 drives the first pulley 24 to rotate, the first pulley 24 drives the belt 26 to rotate, the belt 26 drives the second pulley 25 to rotate, the second pulley 25 drives the second screw rod 23 to rotate, and the rotation of the first screw rod 21 and the second screw rod 23 drives the first screw sleeve 27 and the second screw sleeve 28 above to move, thereby driving the fixing mechanism 6 above to adjust to the middle position of the PCB board.

[0023] The fixing mechanism 6 includes a mounting plate 61, a rotating shaft 62 is rotatably connected inside the mounting plate 61, one end of the rotating shaft 62 is fixedly connected to a fixing frame 63, the fixing frame 63 is in an inverted U shape, an electric push rod 64 is fixedly connected to the top of the fixing frame 63, a shock absorbing assembly 66 is fixedly connected to the bottom of the electric push rod 64, and a fixing plate 65 is fixedly connected to the bottom of the shock absorbing assembly 66. The shock absorbing assembly 66 includes a connecting plate 661 fixedly connected to the electric push rod 64, a damper 662 is fixedly connected to the bottom of the connecting plate 661, and the bottom of the damper 662 is fixedly connected to the fixing plate 65, and a spring 663 is provided on the outer sleeve of the damper 662. A rubber pad 67 is fixedly connected to the bottom wall of the fixing plate 65 and the fixing frame 63. During operation, the lower wall of the PCB board is placed on the bottom wall of the fixing frame 63, and the rear wall of the PCB board is connected to the limit plate 3. Then the electric push rod 64 is started, and the electric push rod 64 pushes the shock absorbing assembly 66 and the fixing plate 65 to move downward to press and fix the PCB board. The shock absorbing assembly 66 can play a role of shock absorption and buffering when the fixing plate 65 presses down and fixes the PCB board, which can effectively prevent the PCB board from being damaged by pressing down too quickly. At the same time, the setting of the rubber pad 67 further protects the PCB board, which can ensure that the PCB board will not be damaged during the fixing process.

[0024] In order to make the device applicable to PCB boards of different sizes, a lateral moving device 7 is provided below the fixing mechanism 6 on the right side, a fourth groove 51 is provided on the right side of the moving plate 5, and the lateral moving device 7 includes a second motor 71 fixedly connected in the fourth groove 51, a third screw rod 72 is fixedly connected to the output end of the second motor 71, the other end of the third screw rod 72 is rotatably connected to the fourth groove 51, a slide bar 73 is provided below the third screw rod 72, the slide bar 73 is fixedly connected to the fourth groove 51, a sliding block 74 is sleeved on the third screw rod 72 and the slide bar 73, an internal threaded through hole and a smooth through hole are provided in the slide block 74, the slide block 74 is threadedly connected to the third screw rod 72 through the internal threaded through hole, and is slidably connected to the slide bar 73 through the smooth through hole. The mounting plate 61 on the left side is fixedly connected to the moving plate 5, and the mounting plate 61 on the right side is fixedly connected to the sliding block 74. During operation, the PCB board is placed on the bottom wall of the left fixing frame 63, and the second motor 71 is started. The second motor 71 drives the third screw rod 72 to rotate, and the third screw rod 72 drives the sliding block 74 to move to the left, so that the fixing frame 63 clamps the PCB board. The sliding rod 72 ensures that the sliding of the sliding block 74 will not be offset and is more stable.

[0025] In order to realize that the PCB board can continuously detect different surfaces without stopping during the detection process, the utility model is provided with a rotating mechanism 8, which includes a third pulley 81 fixedly connected to the rotating shaft 62, a fourth pulley 82 is arranged opposite to the third pulley 81 below, a belt 83 is sleeved on the third pulley 81 and the fourth pulley 82, the fourth pulley 82 is fixedly connected to the output end of the third motor 84 through the rotating shaft, a motor bracket 85 is arranged below the third motor 84, and the motor bracket 85 is fixedly connected to the third motor 84. When working, the third motor 84 is started, the third motor 84 drives the fourth pulley 82 to rotate, the fourth pulley 82 drives the belt 83 to rotate, the belt 83 drives the third pulley 81 to rotate, the third pulley 81 drives the rotating shaft 62 to rotate, the rotating shaft 62 drives the fixing mechanism 6 to rotate, and the fixing mechanism 6 drives the PCB board above it to rotate, so as to realize the turning over of the PCB board.

[0026] The working principle of the utility model is: when the PCB board needs to be fixed before being tested, first adjust the longitudinal moving device 2 according to the width of the PCB board, so that the center line of the fixing mechanism 6 is adjusted to the position of half the width of the PCB board, and accurately adjust according to the scale line 4 during adjustment. During adjustment, first start the first motor 22, the first motor 22 drives the first screw rod 21 to rotate, the first screw rod 21 drives the first pulley 24 to rotate, the first pulley 24 drives the belt 26 to rotate, the belt 26 drives the second pulley 25 to rotate, the second pulley 25 drives the second screw rod 23 to rotate, and the rotation of the first screw rod 21 and the second screw rod 23 drives the first screw sleeve 27 and the second screw sleeve 28 above to move, thereby driving the center line of the fixing mechanism 6 above them Adjust to a position of half the width of the PCB board; after adjustment, place the lower wall of the PCB board on the bottom wall of the left fixing frame 63, and the rear wall of the PCB board is connected to the limit plate 3, so that the upper left corner of the PCB board is aligned with the zero point of the scale line 4, and then start the lateral moving device 7, so that the lateral moving device 7 drives the fixing mechanism 6 on the right to move to the left to clamp the PCB board, and then start the electric push rod 64 of the fixing mechanism 6, and the electric push rod 64 pushes the shock absorbing component 66 and the fixing plate 65 downward to press and fix the PCB board, thereby completing the fixation of the PCB board; when the PCB board needs to be turned over, start the rotating mechanism 8, then the PCB board can be turned over, so that the PCB board can be continuously tested on different sides without stopping during the testing process.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or 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 invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for PCB board detection, comprising a bottom plate (1), characterized in that: A longitudinal moving device (2) is provided on the bottom plate (1), a limit plate (3) is fixedly connected to the rear end of the bottom plate (1), a scale line (4) is provided on one side of the limit plate (3) and the longitudinal moving device (2), a moving plate (5) is fixedly connected to the longitudinal moving device (2), two fixing mechanisms (6) are provided on the moving plate (5) opposite to each other, a transverse moving device (7) is provided below the right fixing mechanism (6), and a rotating mechanism (8) is provided on one side of the left fixing mechanism (6); the fixing mechanism (6) comprises a mounting plate (61), a rotating shaft (62) is rotatably connected inside the mounting plate (61), one end of the rotating shaft (62) is fixedly connected to a fixing frame (63), the top of the fixing frame (63) is fixedly connected to an electric push rod (64), a shock absorbing assembly (66) is fixedly connected below the electric push rod (64), and a fixing plate (65) is fixedly connected below the shock absorbing assembly (66).

2. A fixing device for PCB board detection according to claim 1, characterized in that: A first groove (11) and a second groove (12) are oppositely arranged on two sides of the bottom plate (1), a third groove (13) is arranged at the front end of the bottom plate (1), and the third groove (13) is connected with the first groove (11) and the second groove (12).

3. A fixing device for PCB board detection according to claim 2, characterized in that: The longitudinal moving device (2) comprises a first screw rod (21) rotatably connected in the first groove (11), one end of the first screw rod (21) passes through the bottom plate (1) and is fixedly connected to the output end of the first motor (22), the first motor (22) is fixedly connected to the bottom plate (1), a first belt pulley (24) is fixedly connected to the first screw rod (21), a second screw rod (23) is rotatably connected in the second groove (12), a second belt pulley (25) is fixedly connected to the second screw rod (23), a first belt (26) is sleeved on the first belt pulley (24) and the second belt pulley (25), a first screw sleeve (27) is sleeved on the first screw rod (21), the first screw sleeve (27) is threadedly connected to the first screw rod (21), a second screw sleeve (28) is sleeved on the second screw rod (23), the second screw sleeve (28) is arranged opposite to the first screw sleeve (27), and the second screw sleeve (28) is threadedly connected to the second screw rod (23).

4. A fixing device for PCB board detection according to claim 3, characterized in that: A movable plate (5) is provided above the top ends of the first screw sleeve (27) and the second screw sleeve (28), and the movable plate (5) is fixedly connected to the first screw sleeve (27) and the second screw sleeve (28).

5. A fixing device for PCB board detection according to claim 4, characterized in that: The shock absorbing assembly (66) comprises a connecting plate (661) fixedly connected to the electric push rod (64), a damper (662) fixedly connected below the connecting plate (661), the damper (662) fixedly connected to the fixing plate (65) below, and a spring (663) disposed on the outer sleeve of the damper (662).

6. A fixing device for PCB board detection according to claim 5, characterized in that: A rubber pad (67) is fixedly connected to the bottom wall of the fixing plate (65) and the fixing frame (63).

7. A fixing device for PCB board detection according to claim 1, characterized in that: A fourth groove (51) is provided on the right side of the movable plate (5), and the transverse moving device (7) comprises a second motor (71) fixedly connected in the fourth groove (51), the output end of the second motor (71) is fixedly connected with a third screw rod (72), the other end of the third screw rod (72) is rotatably connected with the fourth groove (51), a sliding rod (73) is provided below the third screw rod (72), the sliding rod (73) is fixedly connected with the fourth groove (51), a sliding block (74) is sleeved on the third screw rod (72) and the sliding rod (73), an internal threaded through hole and a smooth through hole are provided in the sliding block (74), the sliding block (74) is threadedly connected with the third screw rod (72) through the internal threaded through hole, and is slidably connected with the sliding rod (73) through the smooth through hole.

8. A fixing device for PCB board detection according to claim 7, characterized in that: The left mounting plate (61) is fixedly connected to the movable plate (5), and the right mounting plate (61) is fixedly connected to the sliding block (74).

9. A fixing device for PCB board detection according to claim 1, characterized in that: The rotating mechanism (8) comprises a third pulley (81) fixedly connected to the rotating shaft (62); a fourth pulley (82) is arranged opposite to the third pulley (81); a second belt (83) is sleeved on the third pulley (81) and the fourth pulley (82); the fourth pulley (82) is fixedly connected to the output end of the third motor (84) through the rotating shaft; a motor bracket (85) is arranged below the third motor (84); and the motor bracket (85) is fixedly connected to the third motor (84).

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