A visual inspection device for drilling holes in PCB boards

Abstract

The invention relates to the technical field of PCB board processing equipment, and discloses a PCB board drilling visual inspection device, comprising a conveyor, wherein a cylinder for adjusting a height position is fixedly connected to one side of the top of the conveyor through a bracket, a connecting plate is fixedly connected to the telescopic end of the cylinder, a detection camera for photographing and inspecting the PCB board is fixedly connected to the bottom of the connecting plate, a cleaning component for cleaning the PCB board is arranged on the other side of the top of the conveyor, and a clamping component for clamping the PCB board is arranged on the cleaning component. The invention effectively avoids the difficulty in cleaning dust and debris attached to the surface of the PCB board when drilling, so that the dust and debris will affect the detection accuracy of the drilling of the PCB board during the photographing inspection, thereby reducing the processing quality problem of the PCB board, and has strong practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board processing equipment, and in particular to a PCB board drilling visual detection device. Background Art

[0002] PCB, or printed circuit board, is an electronic component that is mainly used to support and connect electronic components. This circuit board is made through electronic printing technology instead of the traditional point-to-point wiring method. The design of PCB boards usually includes layers of copper foil and insulating materials, which are left through an etching process to form a conductive path, while the insulating material provides support and isolation. PCB boards have different numbers of layers and can be single-sided, double-sided or multi-layer boards, depending on their design and the complexity of the required circuits. Due to their small size, high density and light weight, PCB boards are essential to the compactness and performance improvement of modern electronic devices, from simple calculators to complex computers and communication equipment.

[0003] Common PCB board drilling visual inspection devices generally place the PCB board that has been drilled on a conveyor for transportation, and take pictures when it moves to the bottom of the shooting and inspection device, thereby achieving the purpose of drilling inspection. Since dust and debris will adhere to the surface of the PCB board after drilling, and the existing device does have an integrated structure that can clean the dust and debris, the dust and debris will affect the detection accuracy of the PCB board drilling during the photo inspection, thereby reducing the processing quality of the PCB board. For this reason, we provide a PCB board drilling visual inspection device. Summary of the invention

[0004] In order to solve the problem in the above background technology that it is difficult to clean the dust and debris attached to the surface of the PCB board when drilling, so that the dust and debris will affect the detection accuracy of the PCB board drilling during photo detection, thereby reducing the processing quality of the PCB board, the present invention provides a PCB board drilling visual inspection device.

[0005] The present invention is implemented by the following technical solution: a PCB plate drilling visual detection device, comprising:

[0006] A conveyor, wherein one side of the top of the conveyor is fixedly connected to a cylinder for adjusting the height position through a bracket, the telescopic end of the cylinder is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a detection camera for taking photos to detect PCB plates, and the other side of the top of the conveyor is provided with a cleaning component for cleaning the PCB plates, and the cleaning component is provided with a clamping component for clamping the PCB plates.

[0007] As a further improvement of the above scheme, the cleaning assembly includes two groups of connecting frames symmetrically fixedly connected to the frames on both sides of the conveyor, the connecting frames are fixedly connected with an electric push rod for adjusting the horizontal distance, two groups of sliding rods are symmetrically fixedly connected above the conveying surface of the conveyor, two groups of slide plates are also symmetrically arranged above the conveying surface of the conveyor, and the slide plates and the two groups of sliding rods are slidably connected at the same time, the top of the slide plate is fixedly connected with a fixed frame, and the fixed frame is fixedly connected to the telescopic end of the electric push rod on the same side, a hollow tube is arranged between the two groups of the fixed frames, a connecting rod 1 is hinged between the hollow tube and the fixed frame through a hinge, a movable rod is slidably connected to the inside of the hollow tube, and the bottom end of the movable rod extends to the outside of the hollow tube, a cleaning brush disc for cleaning PCB boards is arranged below the movable rod, a moving assembly is arranged between the movable rod and the cleaning brush disc, and a rotating assembly is arranged inside the hollow tube.

[0008] As a further improvement of the above scheme, the movable assembly includes a connecting rod 2 hingedly connected between the bottom end of the movable rod and the top of the cleaning brush plate through a hinge, a fixed block is fixedly connected to the lower part of one side of the movable rod, a vertical rod is slidably connected to the fixed block and the bottom end of the vertical rod is movably connected to the cleaning brush plate, a spring is provided on the outside of the vertical rod, and an anti-detachment plate is fixedly connected to the top end of the vertical rod for preventing the vertical rod from detaching from the fixed block.

[0009] As a further improvement of the above scheme, the rotating assembly includes a limit plate fixedly connected to the top of the movable rod to prevent the movable rod from detaching from the hollow tube, the top of the limit plate is fixedly connected to a connecting piece, the connecting piece is symmetrically and movably connected with balls, the inner wall of the hollow tube is provided with a spiral groove matching the ball at the position corresponding to the ball, the top of the connecting piece is fixedly connected to a horizontal plate, and a spring 2 is fixedly connected between the horizontal plate and the top of the inner cavity of the hollow tube.

[0010] As a further improvement of the above scheme, the clamping assembly includes a movable plate fixedly connected to the skateboard through an L-shaped connecting rod, a clamping plate is provided on one side of the movable plate, a cross bar is symmetrically fixedly connected to one side of the clamping plate and the cross bar and the movable plate are slidably connected, a spring three is provided on the outer sleeve of the cross bar, and a baffle is fixedly connected to the end of the cross bar to prevent the cross bar from detaching from the movable plate.

[0011] As a further improvement of the above scheme, a slide groove is opened on one side of the top of the cleaning brush plate, a slider is slidably connected inside the slide groove and the slider is fixedly connected to the vertical rod, a spring four is added inside the slide groove and the two ends of the spring four are respectively fixedly connected to the inner wall of the slide groove and the slider.

[0012] As a further improvement of the above solution, the elasticity of the spring one is consistent with the elasticity of the spring four, and the elasticity of the spring one is smaller than the elasticity of the spring two.

[0013] As a further improvement of the above solution, two ends of the spring 1 are fixedly connected to the fixed block and the sliding block respectively.

[0014] As a further improvement of the above solution, two ends of the spring three are fixedly connected to the movable plate and the clamping plate respectively.

[0015] As a further improvement of the above solution, anti-slip protection pads are provided on opposite sides of the two groups of clamping plates.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses two groups of electric push rods to push two groups of fixed frames to move toward each other at the same time, and under the cooperation of the hinged action between the fixed frame and the hollow tube and the connecting rod 1, the cleaning brush plate can be pushed to move vertically downward to approach the PCB plate, thereby facilitating the cleaning of the PCB plate.

[0018] 2. In the present invention, when the cleaning brush disc contacts the surface of the PCB board, the movable rod will continue to move downward due to the continued pushing of the electric push rod. At this time, the movable rod and the hinged connection between the cleaning brush disc and the second connecting rod, the sliding connection between the fixed block and the vertical rod, and the sliding connection between the slider and the slide groove can push the cleaning brush disc to move horizontally, thereby achieving the purpose of cleaning dust and debris on the surface of the PCB board.

[0019] 3. In the present invention, when the cleaning brush plate moves horizontally to the maximum distance, as the electric push rod continues to push, the hollow tube will compress spring 2 to keep moving downward, and the movable cooperation between the ball and the spiral groove is utilized so that the hollow tube can drive the movable rod to rotate when moving downward, thereby driving the cleaning brush plate to rotate to improve the cleaning effect of the PCB plate, and the practicability is strong.

[0020] 4. In the present invention, since the cleaning brush disc forms an eccentric distance with the movable rod after horizontal movement, the cleaning brush disc can increase its cleaning range when rotating, which not only ensures the thoroughness of cleaning the PCB board, but also can be applied to PCB boards of different sizes, and has strong practicality.

[0021] 5. In the present invention, while the electric push rod pushes the fixed frame to drive the cleaning brush disc to clean the PCB plate, the two groups of fixed frames move toward each other and also drive the two groups of slide plates to slide toward each other outside the slide rod. The two groups of slide plates move toward each other and can drive the two groups of movable plates to move toward each other, thereby driving the two groups of clamping plates to move toward each other to automatically clamp the PCB plate, thereby ensuring the stability of the PCB plate during cleaning and preventing it from moving.

[0022] 6. In the process of the two sets of clamps moving toward each other to clamp the PCB plate, the present invention will also push the PCB plate toward the center of the conveying surface of the conveyor, thereby ensuring that the PCB plate passes smoothly through the bottom of the detection camera to prevent it from being skewed and affecting the detection of drilling holes in the PCB plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the mobile assembly of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the longitudinal section structure of the hollow tube of the present invention.

[0029] Description of main symbols:

[0030] 1. Conveyor; 2. Cylinder; 3. Connecting plate; 4. Detection camera; 5. Anti-skid protection pad; 101. Connecting frame; 102. Electric push rod; 103. Sliding rod; 104. Sliding plate; 105. Fixed frame; 106. Hollow tube; 107. Connecting rod one; 108. Movable rod; 109. Cleaning brush plate; 1081. Limiting plate; 1082. Connecting piece; 1083. Ball; 1084. Spiral groove; 1085. Horizontal plate; 1086. Spring two; 1091. Connecting rod two; 1092. Fixed block; 1093. Vertical rod; 1094. Spring one; 1095. Anti-slip plate; 1096. Sliding groove; 1097. Sliding block; 1098. Spring four; 201. Movable plate; 202. Clamp; 203. Cross bar; 204. Spring three; 205. Baffle. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] Embodiment 1:

[0033] Please combine Figure 1-6 , a PCB plate drilling visual inspection device of this embodiment includes:

[0034] Conveyor 1, one side of the top of the conveyor 1 is fixedly connected with a cylinder 2 for adjusting the height position through a bracket, the telescopic end of the cylinder 2 is fixedly connected with a connecting plate 3, the bottom of the connecting plate 3 is fixedly connected with a detection camera 4 for taking pictures to detect PCB plates, and the other side of the top of the conveyor 1 is provided with a cleaning component for cleaning the PCB plates, and the cleaning component is provided with a clamping component for clamping the PCB plates.

[0035] The cleaning assembly includes two groups of connecting frames 101 symmetrically fixedly connected to the frames on both sides of the conveyor 1, and the connecting frames 101 are fixedly connected with electric push rods 102 for adjusting the horizontal distance, and two groups of sliding rods 103 are symmetrically fixedly connected above the conveying surface of the conveyor 1, and two groups of slide plates 104 are symmetrically arranged above the conveying surface of the conveyor 1, and the slide plates 104 are slidably connected to the two groups of sliding rods 103 at the same time, and the top of the slide plate 104 is fixedly connected with a fixed frame 105, and the fixed frame 105 is connected to the telescopic end of the electric push rod 102 on the same side. The two ends are fixedly connected, a hollow tube 106 is arranged between the two sets of fixing frames 105, a connecting rod 107 is hinged between the hollow tube 106 and the fixing frame 105 through a hinge, a movable rod 108 is slidably connected inside the hollow tube 106 and the bottom end of the movable rod 108 extends to the outside of the hollow tube 106, a cleaning brush disc 109 for cleaning the PCB board is arranged below the movable rod 108, a moving component is arranged between the movable rod 108 and the cleaning brush disc 109, and a rotating component is arranged inside the hollow tube 106.

[0036] The movable assembly includes a connecting rod 1091 hinged between the bottom end of the movable rod 108 and the top of the cleaning brush disc 109 through a hinge, a fixed block 1092 is fixedly connected to the lower part of one side of the movable rod 108, a vertical rod 1093 is slidably connected to the fixed block 1092, and the bottom end of the vertical rod 1093 is movably connected to the cleaning brush disc 109, a sliding groove 1096 is provided on one side of the top of the cleaning brush disc 109, a slider 1097 is slidably connected to the inside of the sliding groove 1096, and the slider 1097 is fixedly connected to the vertical rod 1093, a spring 1098 is added to the inside of the sliding groove 1096, and the two ends of the spring 1098 are respectively fixedly connected to the inner wall of the sliding groove 1096 and the slider 1097, a spring 1094 is sleeved on the outside of the vertical rod 1093, and an anti-detachment plate 1095 for preventing the vertical rod 1093 from detaching from the fixed block 1092 is fixedly connected to the top of the vertical rod 1093.

[0037] The rotating assembly includes a limit plate 1081 fixedly connected to the top of the movable rod 108 to prevent the movable rod 108 from detaching from the hollow tube 106. A connecting piece 1082 is fixedly connected to the top of the limit plate 1081. Balls 1083 are symmetrically and movably connected to the connecting piece 1082. A spiral groove 1084 matching the position of the ball 1083 is provided on the inner wall of the hollow tube 106. A horizontal plate 1085 is fixedly connected to the top of the connecting piece 1082. A spring 2 1086 is fixedly connected between the horizontal plate 1085 and the top of the inner cavity of the hollow tube 106. The elasticity of spring 1 1094 is consistent with that of spring 4 1098. The elasticity of spring 1 1094 is smaller than that of spring 2 1086. The two ends of spring 1 1094 are respectively fixedly connected to the fixed block 1092 and the slider 1097.

[0038] The clamping assembly includes a movable plate 201 fixedly connected to the slide plate 104 through an L-shaped connecting rod, a clamping plate 202 is arranged on one side of the movable plate 201, a cross bar 203 is symmetrically fixedly connected to one side of the clamping plate 202, and the cross bar 203 and the movable plate 201 are slidably connected, a spring three 204 is sleeved on the outside of the cross bar 203, and the two ends of the spring three 204 are respectively fixedly connected to the movable plate 201 and the clamping plate 202, and a baffle 205 is fixedly connected to the end of the cross bar 203 for preventing the cross bar 203 from detaching from the movable plate 201.

[0039] The implementation principle of a PCB plate drilling visual inspection device in the embodiment of the present application is as follows: first, the conveyor 1 is started and the PCB plate with the drilling completed is placed on the conveying surface for conveying. Then, when the PCB plate moves between the two groups of clamping plates 202, the conveyor 1 is stopped and the electric push rod 102 is started. The two groups of electric push rods 102 respectively push the two groups of fixed frames 105 to move toward each other at the same time. Under the cooperation of the hinged action between the fixed frame 105 and the hollow tube 106 and the connecting rod 107, the cleaning brush plate 109 can be pushed to move vertically downward to approach the PCB plate, so as to facilitate the cleaning of the PCB plate. When the cleaning brush plate 109 contacts the surface of the PCB plate, the electric push rod 102 continues to push the movable The rod 108 will continue to move downward. At this time, the hinged joint between the movable rod 108 and the cleaning brush plate 109 and the second connecting rod 1091, the sliding joint between the fixed block 1092 and the vertical rod 1093, and the sliding joint between the slider 1097 and the slide groove 1096 can push the cleaning brush plate 109 to move horizontally, thereby achieving the purpose of cleaning the dust and debris on the surface of the PCB board. When the cleaning brush plate 109 moves horizontally to the maximum distance, as the electric push rod 102 continues to push, the hollow tube 106 will compress the second spring 1086 to keep moving downward, and utilize the active joint between the ball 1083 and the spiral groove 1084 to enable the hollow tube 106 to drive the movable rod 108 to rotate when moving downward, thereby The cleaning brush disc 109 can be driven to rotate to improve the cleaning effect of the PCB plate. At the same time, since the cleaning brush disc 109 forms an eccentric distance with the movable rod 108 after horizontal movement, the cleaning brush disc 109 can increase its cleaning range when rotating, which not only ensures the thoroughness of cleaning the PCB plate, but also can be suitable for PCB plates of different sizes. When the electric push rod 102 pushes the fixed frame 105 to drive the cleaning brush disc 109 to clean the PCB plate, the two sets of fixed frames 105 move toward each other and also drive the two sets of slide plates 104 to slide toward each other outside the slide rod 103. The two sets of slide plates 104 move toward each other and can drive the two sets of movable plates 201 to move toward each other, thereby driving the two sets of clamping plates 202 to move toward each other. The PCB board is automatically clamped by the movement, thereby ensuring the stability of the PCB board during cleaning and preventing it from moving. When the clamping plate 202 contacts the PCB board, the sliding cooperation between the movable plate 201 and the cross bar 203 is utilized to make the movable plate 201 squeeze the spring three 204, thereby playing a certain buffering role to ensure that the hollow tube 106 can continue to move downward. Finally, when the cleaning is completed, the cleaning brush plate 109 is controlled to reset, and the conveyor 1 is started to continue to convey the PCB board. When the PCB board moves to the bottom of the detection camera 4, the conveyor 1 is closed again, and the drilling holes on the PCB board are photographed by the detection camera 4, so as to facilitate the detection, and the detection camera 4 is pushed by the cylinder 2 to move vertically.It is convenient to adjust the focus to ensure clear shooting.

[0040] Embodiment 2:

[0041] Based on the embodiment 1, the present embodiment is further improved in that: anti-skid protection pads 5 are provided on the opposite sides of the two groups of clamping plates 202, which can not only protect the PCB plate, but also increase the friction between the clamping plates 202 and the PCB plate to improve the clamping and fixing effect.

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A PCB board drilling visual inspection device, characterized in that: include: A conveyor (1), wherein a cylinder (2) for adjusting the height position is fixedly connected to one side of the top of the conveyor (1) via a bracket, a connecting plate (3) is fixedly connected to the telescopic end of the cylinder (2), a detection camera (4) for taking photos to detect PCB plates is fixedly connected to the bottom of the connecting plate (3), a cleaning component for cleaning the PCB plates is arranged on the other side of the top of the conveyor (1), and a clamping component for clamping the PCB plates is arranged on the cleaning component; The cleaning assembly comprises two groups of connecting frames (101) symmetrically fixedly connected to the frames on both sides of the conveyor (1), the connecting frames (101) are fixedly connected with electric push rods (102) for adjusting the horizontal distance, two groups of sliding rods (103) are symmetrically fixedly connected above the conveying surface of the conveyor (1), two groups of sliding plates (104) are also symmetrically arranged above the conveying surface of the conveyor (1), and the sliding plates (104) and the two groups of sliding rods (103) are simultaneously slidably connected, and the top of the sliding plates (104) is fixedly connected with a fixing frame (105), and the fixing frame (105) and the telescopic end of the electric push rod (102) on the same side are connected. A hollow tube (106) is fixedly connected between the two groups of the fixing frames (105), a connecting rod (107) is hinged between the hollow tube (106) and the fixing frame (105) through a hinge, a movable rod (108) is slidably connected inside the hollow tube (106) and the bottom end of the movable rod (108) extends to the outside of the hollow tube (106), a cleaning brush disc (109) for cleaning the PCB board is arranged below the movable rod (108), a moving component is arranged between the movable rod (108) and the cleaning brush disc (109), and a rotating component is arranged inside the hollow tube (106); The movable assembly comprises a second connecting rod (1091) hinged between the bottom end of the movable rod (108) and the top of the cleaning brush plate (109) through a hinge, a fixed block (1092) is fixedly connected to the lower part of one side of the movable rod (108), a vertical rod (1093) is slidably connected to the fixed block (1092), and the bottom end of the vertical rod (1093) is movably connected to the cleaning brush plate (1099), a spring (1094) is sleeved on the outside of the vertical rod (1093), and an anti-slip plate (1095) is fixedly connected to the top end of the vertical rod (1093) for preventing the vertical rod (1093) from detaching from the fixed block (1092); The rotating assembly comprises a limit plate (1081) fixedly connected to the top of the movable rod (108) for preventing the movable rod (108) from being separated from the hollow tube (106); a connecting piece (1082) is fixedly connected to the top of the limit plate (1081); a ball (1083) is symmetrically and movably connected to the connecting piece (1082); a spiral groove (1084) matching the ball (1083) is provided on the inner wall of the hollow tube (106) at a position corresponding to the ball (1083); a horizontal plate (1085) is fixedly connected to the top of the connecting piece (1082); and a spring 2 (1086) is fixedly connected between the horizontal plate (1085) and the top of the inner cavity of the hollow tube (106); The clamping assembly comprises a movable plate (201) fixedly connected to a slide plate (104) via an L-shaped connecting rod, a clamping plate (202) is provided on one side of the movable plate (201), a cross bar (203) is symmetrically fixedly connected to one side of the clamping plate (202), and the cross bar (203) and the movable plate (201) are slidably connected, a spring (204) is sleeved on the outside of the cross bar (203), and a baffle (205) is fixedly connected to the end of the cross bar (203) for preventing the cross bar (203) from being separated from the movable plate (201); A slide groove (1096) is provided on one side of the top of the cleaning brush plate (109), a slider (1097) is slidably connected inside the slide groove (1096), and the slider (1097) is fixedly connected to the vertical rod (1093), a spring four (1098) is added inside the slide groove (1096), and the two ends of the spring four (1098) are respectively fixedly connected to the inner wall of the slide groove (1096) and the slider (1097); The elasticity of the spring one (1094) is consistent with the elasticity of the spring four (1098), and the elasticity of the spring one (1094) is smaller than the elasticity of the spring two (1086); The two ends of the spring 1 (1094) are respectively fixedly connected to the fixed block (1092) and the sliding block (1097); The two ends of the spring three (204) are respectively fixedly connected to the movable plate (201) and the clamping plate (202); Anti-slip protection pads (5) are provided on opposite sides of the two groups of clamping plates (202).

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