PCB drilling leak-proof conduction test loop structure and detection method

Abstract

This invention relates to the field of PCB drilling and discloses a continuity test circuit structure and testing method for PCB drilling leakage prevention. The circuit includes a ring-shaped platform with two symmetrical slots at its top. A first conductive plate is installed on the inner bottom wall of each slot. A circuit continuity component is provided between the two slots, comprising two inserts inserted into the two slots respectively. A connecting wire is installed between the two inserts. A second conductive plate is installed at the bottom of each insert. The two ends of the connecting wire are electrically connected to the two second conductive plates respectively. An arc-shaped slot is provided on each insert. A rotating locking component is provided at the top of the ring-shaped platform. In this invention, the ring-shaped platform is installed on the PCB at the drilling location. After the circuit continuity component is installed on the ring-shaped platform, a warning light illuminates. During drilling, the connecting wire is broken, causing the warning light to turn off, thus achieving a drilling leakage prevention warning function.

Description

Technical Field

[0001] This invention belongs to the field of PCB drilling, specifically the continuity test circuit structure and testing method for PCB drilling leakage prevention. Background Technology

[0002] Printed circuit boards (PCBs) are widely used in various industries, including consumer electronics, industrial control, new energy equipment, communication terminals, intelligent equipment, and automotive electronics, due to their excellent circuit integration, structural stability, and ease of assembly. As electronic devices continue to evolve towards miniaturization, integration, and high density, the circuit layout of PCBs is becoming increasingly precise, with a significant increase in the number of functional holes and a denser arrangement of these holes. Drilling, as an indispensable core process in PCB manufacturing, encompasses various types such as component insertion holes, circuit through holes, positioning mounting holes, and heat dissipation holes. The completeness, positional accuracy, and forming quality of drilling directly determine the circuit conductivity, component assembly accuracy, and finished product yield of the PCB. It is a key process to ensure the overall production quality of PCBs. Currently, the industry commonly uses automated equipment such as CNC drilling machines and high-speed drilling machines to complete batch drilling operations for PCBs. For conventional PCBs with a small number of holes, regular arrangement, and uniform specifications, automated equipment can complete precise drilling based on preset programs, and the processing efficiency and accuracy can meet basic production needs. However, it has the following drawbacks:

[0003] During the process of continuous drilling in large batches, the drilling points on PCB boards are complex, dense, and lack uniform identification marks. It is difficult for staff to quickly and completely check all the holes to be processed in the stages of loading and unloading, pre-processing verification, and process inspection. It is also difficult to effectively check the unprocessed points, which can easily lead to missed drilling. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a continuity test circuit structure and detection method for PCB drilling leakage prevention, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a continuity test circuit structure for preventing leakage during PCB drilling, including a ring-shaped platform, two slots symmetrically opened at the top of the ring-shaped platform, a first conductive sheet installed on the inner bottom wall of the slots, and a circuit continuity component disposed between the two slots;

[0006] The circuit conduction component includes two plugs, which are inserted into two slots respectively. A connecting wire is installed between the two plugs. A second conductive plate is installed at the bottom of the plug. The two ends of the connecting wire are electrically connected to the two second conductive plates respectively. An arc-shaped slot is opened on the plug. A rotating locking component is provided at the top of the annular platform.

[0007] A battery and a warning light are installed at the top of the circular platform, and the two first conductive plates, the battery and the warning light are connected in series.

[0008] Preferably, the rotating snap-fit ​​assembly includes a toothed ring disposed above the annular platform, with arc-shaped locking rods symmetrically installed on the inner side of the toothed ring, and mounting plates fixedly installed on the side of the arc-shaped locking rods near their counterclockwise direction. After the toothed ring rotates, the two mounting plates are respectively snapped into the arc-shaped locking grooves on the two inserts. A positioning element is provided on the inner side of the toothed ring, and negative pressure fixing assemblies are symmetrically arranged on both sides of the toothed ring.

[0009] Preferably, a limiting rotating ring is fixedly installed at the bottom end of the toothed ring, a limiting ring groove is formed at the top end of the annular platform, the limiting rotating ring is rotatably installed inside the limiting ring groove, and a positioning groove is formed at the top end of the annular platform, the positioning groove being located inside the toothed ring.

[0010] Preferably, the positioning component includes a fixing plate fixedly installed on the inner side of the toothed ring, a fixing cylinder fixedly installed on the top of the fixing plate, a positioning rod movably installed inside the fixing cylinder, the bottom end of the positioning rod penetrating to the bottom of the fixing plate, and the positioning rod being engaged in the positioning groove.

[0011] Preferably, a spring is fixedly installed at the top end of the positioning rod, the top end of the spring is fixedly connected to the inner top wall of the fixed cylinder, and a pull rod is fixedly installed at the top end of the spring, with the top end of the pull rod extending through to the top of the fixed cylinder.

[0012] Preferably, the negative pressure fixing assembly includes negative pressure cavities symmetrically opened on both sides of the inside of the annular platform. A sealing gasket is installed at the bottom of the negative pressure cavity, and a top rotating groove is coaxially opened at the top of the negative pressure cavity. A piston block is movably installed inside the negative pressure cavity, and the outer wall of the piston block is in close contact with the inner wall of the negative pressure cavity.

[0013] Preferably, the gear ring is symmetrically meshed with gears on both sides, and a limiting block is coaxially installed at the bottom end of the gear. The limiting block is rotatably connected to the top rotating groove. A threaded groove is coaxially opened inside the gear. The top end of the threaded groove extends to the top of the gear, and the bottom end of the threaded groove extends to the bottom of the limiting block. A screw is coaxially installed at the top end of the piston block, and the screw is threadedly connected to the threaded groove.

[0014] Preferably, the top end of the screw extends through to the top of the gear, and a top plate is fixedly installed on the top end of the screw. The top plate is slidably installed on the outside of the two guide rods, and the guide rods are fixedly installed on the top of the annular platform.

[0015] The preferred method for testing the continuity test circuit structure for PCB drilling leakage prevention is as follows:

[0016] S1. Location selection: Select the locations on the PCB board where drilling is required, and install the device of this application at each of the locations where drilling is required;

[0017] S2. Assembly: Install the ring platform at the drilling position, insert the two inserts into the two slots respectively, and then rotate the toothed ring to make the mounting plate snap into the arc-shaped slot and the positioning rod snap into the positioning slot to complete the snap-fit.

[0018] S3. Installation: After the gear ring rotates, it synchronously drives the piston block to move upward, so that the ring platform and the PCB board are fixed by negative pressure adsorption, thus realizing the installation.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) In this invention, the ring platform is installed on the PCB board at the location where a hole needs to be drilled. After the circuit conduction component is installed on the ring platform, the battery, warning light, two first conductive plates, two second conductive plates and connecting wires form a circuit, so that the warning light lights up to complete the marking. The connecting wires pass through the axis of the ring platform. When drilling, the connecting wires need to be drilled through to break them, so that the warning light turns off, thus achieving the function of preventing leakage during drilling.

[0021] (2) In this invention, after the two plugs are inserted into the two slots respectively, the toothed ring is rotated until the two mounting plates on the inner side of the toothed ring are respectively snapped into the arc-shaped slots in the two plugs, thereby snapping and fixing the ring platform and the circuit conduction component, and improving the stability of the equipment.

[0022] (3) In this invention, a positioning element is provided on the inner side of the toothed ring. Before the toothed ring rotates, the bottom of the positioning rod is in close contact with the top wall of the annular platform and the spring is in a compressed state. After the toothed ring rotates, the positioning rod moves to the top of the positioning groove, so that the positioning rod is stuck into the positioning groove under the action of the elastic force, thereby fixing the position of the toothed ring and further improving the stability of the equipment.

[0023] (4) In this invention, the gear ring is meshed with the gears on both sides, and the inner thread of the gear is installed with a screw, so that the gear ring rotates and drives the screw to move upward, thereby driving the piston block to move upward, so that the negative pressure chamber and the PCB board body generate a negative pressure adsorption and fixing effect, and fix the ring platform to the PCB board body, which facilitates drilling.

[0024] (5) In this invention, a connecting wire is provided between the two plugs, and the plugs are separately connected to the ring platform, so that the connecting wire can be directly replaced after being drilled and broken, which is convenient for subsequent use. At the same time, the connecting wire can be reconnected, saving costs. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic diagram of the continuity test circuit structure for PCB drilling leakage prevention of the present invention;

[0028] Figure 2 This is a schematic diagram of the ring-shaped structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the circuit conduction component structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the rotating snap-fit ​​assembly structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the toothed ring structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the positioning component structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the negative pressure fixing component structure of the present invention;

[0034] In the diagram: 1. Ring platform; 2. Battery; 3. Warning light; 4. Slot; 5. First conductive plate; 6. Circuit conduction assembly; 61. Insert block; 62. Connecting wire; 63. Second conductive plate; 64. Arc-shaped slot; 7. Rotary locking assembly; 71. Gear ring; 72. Limiting rotating ring; 73. Limiting ring groove; 74. Positioning groove; 75. Mounting plate; 76. Arc-shaped locking rod; 77. Positioning component; 771. Fixing plate; 772. Fixing cylinder; 773. Positioning rod; 774. Spring; 775. Pull rod; 8. Negative pressure fixing assembly; 81. Negative pressure chamber; 82. Sealing gasket; 83. Top rotating groove; 84. Gear; 85. Limiting rotating block; 86. Screw groove; 87. Piston block; 88. Screw; 89. Top plate; 810. Guide rod. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Example 1, by Figures 1-2 The present invention relates to a continuity test circuit structure for preventing leakage during PCB drilling, comprising a ring stage 1, two slots 4 symmetrically opened at the top of the ring stage 1, a first conductive plate 5 installed on the inner bottom wall of the slot 4, a circuit continuity component 6 disposed between the two slots 4, a storage battery 2 and a warning light 3 installed at the top of the ring stage 1, and the two first conductive plates 5, the storage battery 2 and the warning light 3 are connected in series.

[0037] Depend on Figure 3 The circuit conduction assembly 6 includes two plugs 61, which are respectively inserted into two slots 4. A connecting wire 62 is installed between the two plugs 61. The plugs 61 are separately connected to the annular platform 1, allowing the connecting wire 62 to be directly replaced if it is broken during drilling, facilitating subsequent use and enabling the connecting wire 62 to be reconnected, thus saving costs. A second conductive plate 63 is installed at the bottom of the plug 61, and the two ends of the connecting wire 62 are electrically connected to the two second conductive plates 63 respectively. The circuit is connected by an arc-shaped slot 64 on the plug 61 and a rotating snap-fit ​​component 7 on the top of the annular platform 1. The annular platform 1 is installed on the PCB board at the drilling location. After the circuit conduction component 6 is installed on the annular platform 1, the battery 2, the warning light 3, the two first conductive plates 5, the two second conductive plates 63 and the connecting wire 62 form a circuit, which makes the warning light 3 light up. The connecting wire 62 passes through the axis of the annular platform 1. When drilling, it needs to be drilled through the connecting wire 62 to break it, thereby turning off the warning light 3 and realizing the drilling leakage warning function.

[0038] Depend on Figures 4-5 The rotating snap-fit ​​assembly 7 includes a toothed ring 71 disposed above the annular platform 1. Arc-shaped locking rods 76 are symmetrically mounted on the inner side of the toothed ring 71. Mounting plates 75 are fixedly mounted on the counter-clockwise side of the arc-shaped locking rods 76. After the toothed ring 71 rotates, the two mounting plates 75 respectively snap into the arc-shaped slots 64 on the two inserts 61. After the two inserts 61 are inserted into the two slots 4, the toothed ring 71 is rotated until the two mounting plates 75 on the inner side of the toothed ring 71 snap into the two inserts 61. In the arc-shaped slot 64 inside 1, the annular platform 1 and the circuit conduction component 6 are snapped and fixed to improve the stability of the equipment. The inner side of the toothed ring 71 is provided with a positioning component 77, and the two sides of the toothed ring 71 are symmetrically provided with negative pressure fixing components 8. The bottom end of the toothed ring 71 is fixedly installed with a limiting rotating ring 72. The top end of the annular platform 1 is provided with a limiting ring groove 73, and the limiting rotating ring 72 is rotatably installed inside the limiting ring groove 73. The top end of the annular platform 1 is provided with a positioning groove 74, which is located inside the toothed ring 71.

[0039] Depend on Figure 6As shown, the positioning element 77 includes components fixedly mounted on the gear ring 71. The inner fixing plate 771 has a fixing cylinder 772 fixedly installed at its top. A positioning rod 773 is movably installed inside the fixing cylinder 772. The bottom end of the positioning rod 773 extends through to the bottom of the fixing plate 771 and is inserted into the positioning groove 74. A spring 774 is fixedly installed at the top of the positioning rod 773 and is fixedly connected to the inner top wall of the fixing cylinder 772. A pull rod 775 is fixedly installed at the top of the spring 774 and extends through to the top of the fixing cylinder 772. A positioning element 77 is provided inside the toothed ring 71. Before the toothed ring 71 rotates, the bottom of the positioning rod 773 is in close contact with the top wall of the annular platform 1, and the spring 774 is in a compressed state. After the toothed ring 71 rotates, the positioning rod 773 moves to the top of the positioning groove 74, so that the positioning rod 773 is inserted into the positioning groove 74 under the action of elasticity, thereby fixing the position of the toothed ring 71 and further improving the stability of the equipment.

[0040] Depend on Figure 7 The negative pressure fixing assembly 8 includes negative pressure chambers 81 symmetrically opened on both sides of the annular platform 1. A sealing gasket 82 is installed at the bottom of each negative pressure chamber 81, and a top rotating groove 83 is coaxially opened at the top of each negative pressure chamber 81. A piston block 87 is movably installed inside each negative pressure chamber 81, with its outer wall tightly against the inner wall of the negative pressure chamber 81. Gears 84 are symmetrically meshed on both sides of a gear ring 71. A limiting rotating block 85 is coaxially installed at the bottom of each gear 84, and the limiting rotating block 85 is rotatably connected to the top rotating groove 83. A threaded groove 86 is coaxially opened inside each gear 84, with its top end extending above the gear 84 and its bottom end extending below the limiting rotating block 85. The piston block... A screw 88 is coaxially mounted on the top of 87. The screw 88 is threadedly connected to the screw groove 86. The top of the screw 88 extends through to the top of the gear 84. A top plate 89 is fixedly mounted on the top of the screw 88. The top plate 89 is slidably mounted on the outside of the two guide rods 810. The guide rods 810 are fixedly mounted on the top of the annular platform 1. The gear ring 71 meshes with the gears 84 on both sides. The screw 88 is threaded on the inner side of the gear 84. The rotation of the gear ring 71 drives the screw 88 to move upward, which in turn drives the piston block 87 to move upward. This creates a negative pressure adsorption and fixing effect between the negative pressure chamber 81 and the PCB board, fixing the annular platform 1 to the PCB board and facilitating drilling.

[0041] Working principle: When in use, select the drilling positions on the PCB board and install the equipment at each drilling position. During installation, place the ring stage 1 on the PCB board and set the ring stage 1 and the hole position coaxially. At this time, the sealing gasket 82 is in close contact with the PCB board. Then, install the circuit conduction component 6 in the two slots 4. During installation, insert the two plugs 61 on the circuit conduction component 6 into the two slots 4 respectively, so that the second conductive piece 63 at the bottom of the plug 61 is in close contact with the first conductive piece 5. At this time, the battery 2, the warning light 3, the two first conductive pieces 5, the two second conductive pieces 63 and the connecting wire 62 form a circuit, so that the warning light 3 is powered on and lights up.

[0042] Then, the pull rod 775 pushes the toothed ring 71 to rotate along the limiting ring groove 73, causing the two mounting plates 75 on the inner side of the toothed ring 71 to respectively engage with the arc-shaped slots 64 on the two inserts 61, thus securing the two inserts 61 and ensuring electrical stability. In the original state, the spring 774 is in a compressed state. When the toothed ring 71 rotates to the position where the inserts 61 and mounting plates 75 engage, the positioning rod 773 moves above the positioning groove 74. At this time, under the elastic force of the spring 774, the positioning rod 773 moves downward and engages with the positioning groove 74, thereby securing the toothed ring 71. This further improves installation stability.

[0043] Meanwhile, during the rotation of the gear ring 71, the gears 84 on both sides mesh with the gear ring 71, and the rotation of the gear ring 71 drives the gears 84 to rotate. The screw groove 86 on the inner side of the gear 84 is threadedly connected to the screw 88 on the top of the piston block 87, so that the rotation of the gear ring 71 drives the screw 88 to move upward, which in turn drives the piston block 87 to move upward, so that the negative pressure chamber 81 and the PCB board body generate a negative pressure adsorption and fixing effect, fixing the ring platform 1 to the PCB board body, which facilitates drilling.

[0044] The connecting wire 62 passes through the axis of the ring platform 1. When drilling, the connecting wire 62 needs to be broken before moving downwards to drill the PCB board. When a hole is drilled, the warning light 3 is de-energized because the connecting wire 62 is broken. If there is still a position where the warning light 3 is lit when the PCB board is drilled, it means that the hole has not been drilled at that position, which serves as a warning against leakage.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuity test circuit structure for preventing leakage during PCB drilling, comprising a ring stage (1), characterized in that: The top of the annular platform (1) has two symmetrical slots (4), and a first conductive sheet (5) is installed on the inner bottom wall of the slot (4). A circuit connection component (6) is provided between the two slots (4). The circuit conduction component (6) includes two plugs (61), which are inserted into two slots (4) respectively. A connecting wire (62) is installed between the two plugs (61). A second conductive plate (63) is installed at the bottom of the plug (61). The two ends of the connecting wire (62) are electrically connected to the two second conductive plates (63) respectively. An arc-shaped slot (64) is provided on the plug (61). A rotating snap-fit ​​component (7) is provided at the top of the ring platform (1). A battery (2) and a warning light (3) are installed on the top of the ring platform (1). The two first conductive plates (5), the battery (2) and the warning light (3) are connected in series.

2. The continuity test circuit structure for PCB drilling leakage prevention according to claim 1, characterized in that: The rotating snap-fit ​​assembly (7) includes a toothed ring (71) disposed above the annular platform (1). A curved snap rod (76) is symmetrically installed on the inner side of the toothed ring (71). An mounting plate (75) is fixedly installed on the side of the curved snap rod (76) near its counterclockwise direction. After the toothed ring (71) rotates, the two mounting plates (75) are respectively snapped into the curved snap grooves (64) on the two inserts (61). A positioning element (77) is disposed on the inner side of the toothed ring (71). A negative pressure fixing assembly (8) is symmetrically disposed on both sides of the toothed ring (71).

3. The continuity test circuit structure for PCB drilling leakage prevention according to claim 2, characterized in that: The bottom end of the toothed ring (71) is fixedly installed with a limiting rotating ring (72), and the top end of the annular platform (1) is provided with a limiting ring groove (73). The limiting rotating ring (72) is rotatably installed inside the limiting ring groove (73). The top end of the annular platform (1) is provided with a positioning groove (74), which is located inside the toothed ring (71).

4. The continuity test circuit structure for PCB drilling leakage prevention according to claim 2, characterized in that: The positioning component (77) includes a fixing plate (771) fixedly installed on the inner side of the toothed ring (71). A fixing cylinder (772) is fixedly installed on the top of the fixing plate (771). A positioning rod (773) is movably installed inside the fixing cylinder (772). The bottom end of the positioning rod (773) extends through to the bottom of the fixing plate (771). The positioning rod (773) is inserted into the positioning groove (74).

5. The continuity test circuit structure for PCB drilling leakage prevention according to claim 4, characterized in that: A spring (774) is fixedly installed at the top of the positioning rod (773). The top of the spring (774) is fixedly connected to the inner top wall of the fixed cylinder (772). A pull rod (775) is fixedly installed at the top of the spring (774). The top of the pull rod (775) extends through to the top of the fixed cylinder (772).

6. The continuity test circuit structure for PCB drilling leakage prevention according to claim 2, characterized in that: The negative pressure fixing assembly (8) includes negative pressure chambers (81) symmetrically opened on both sides of the annular platform (1). A sealing gasket (82) is installed at the bottom of the negative pressure chamber (81). A top rotating groove (83) is coaxially opened at the top of the negative pressure chamber (81). A piston block (87) is movably installed inside the negative pressure chamber (81). The outer wall of the piston block (87) is in close contact with the inner wall of the negative pressure chamber (81).

7. The continuity test circuit structure for PCB drilling leakage prevention according to claim 6, characterized in that: The gear ring (71) is symmetrically meshed with gears (84) on both sides. A limiting block (85) is coaxially installed at the bottom end of the gear (84). The limiting block (85) is rotatably connected to the top rotating groove (83). A threaded groove (86) is coaxially opened inside the gear (84). The top end of the threaded groove (86) extends to the top of the gear (84), and the bottom end of the threaded groove (86) extends to the bottom of the limiting block (85). A screw (88) is coaxially installed at the top end of the piston block (87). The screw (88) is threadedly connected to the threaded groove (86).

8. The continuity test circuit structure for PCB drilling leakage prevention according to claim 7, characterized in that: The top end of the screw (88) extends through to the top of the gear (84). A top plate (89) is fixedly installed on the top end of the screw (88). The top plate (89) is slidably installed on the outside of the two guide rods (810). The guide rods (810) are fixedly installed on the top of the annular platform (1).

9. The method for detecting the continuity test circuit structure for PCB drilling leakage prevention according to any one of claims 1-8, characterized in that, The detection method is as follows: S1. Location selection: Select the locations on the PCB board where drilling is required, and install the device of this application at each of the locations where drilling is required; S2. Assembly: Install the ring platform (1) at the drilling position, insert the two inserts (61) into the two slots (4) respectively, and then rotate the toothed ring (71) so that the mounting plate (75) is inserted into the arc-shaped slot (64) and the positioning rod (773) is inserted into the positioning groove (74) to complete the snap-fit. S3. Installation: After the gear ring (71) rotates, it synchronously drives the piston block (87) to move upward, so that the ring platform (1) is fixed by negative pressure adsorption with the PCB board, thus realizing the installation.

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