A length measuring structure for PCB micro drill

Abstract

The utility model discloses a length measurement structure for PCB micro drill needle relates to length measurement equipment technical field. The utility model discloses a racecourse type support track is equipped with a bearing column in the inside of semicircle of both ends, and every bearing column is rotatoryly installed with first belt pulley and second belt pulley respectively, and the first belt pulley and second belt pulley are sleeved with the conveyance belt between, and the conveyance belt outside wall is fixed with the conveyance board at equal interval, and the conveyance board is equipped with drill needle mounting subassembly, and the size collection mechanism includes the measurement box, high definition camera and light supplementing lamp. The utility model discloses every PCB micro drill needle is conveyed to the measurement position and carries out the shooting PCB micro drill needle through drill needle conveyance mechanism, and the needle body length of drill needle is measured through the enlarged interception of the shooting picture, and the computer automatic calculation measurement is high in accuracy, and the low measurement efficiency of current, the measurement operation troublesome and other problems are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of length measuring equipment, and in particular relates to a length measuring structure for PCB micro drill bits. Background Technology

[0002] The core concept of PCB micro drill bit length refers to its effective working length, which is industry-standardly defined as "the distance from the tip of the drill bit to the mating surface between the shank and neck." This is a critical dimension involved in actual drilling. This length is difficult to measure with a ruler, and measurement efficiency is low. Because there is a curved transition section between the tip of the drill bit and the shank, this length easily affects the measurement of the drill bit's body length. Measurement using 2D image analyzers with auxiliary devices, tool microscopes, and automated machine vision is complex, cumbersome, and inefficient. Utility Model Content

[0003] The purpose of this invention is to provide a length measurement structure for PCB micro drill bits. Each PCB micro drill bit is transported to the measurement position by a drill bit transport mechanism for photographing. The length of the drill bit is measured by magnifying the photographed image and then automatically calculating the measurement by computer. This method is highly accurate and solves the problems of low measurement efficiency and cumbersome measurement operation in existing methods.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a length measurement structure for micro drill bits in PCB manufacturing, comprising a measuring platform, a drill bit transport mechanism, and a dimension acquisition mechanism. The measuring platform is equipped with a racetrack-shaped support track, and each of the racetrack-shaped support track has a bearing post on the inner side of its semicircular ends. A first belt roller and a second belt roller are rotatably mounted in each bearing post. A transport belt is fitted between the first belt roller and the second belt roller. Transport plates are fixed at equal intervals on the outer wall of the transport belt. A drill bit mounting assembly is mounted on the transport plate. A motor post is located next to the bearing post corresponding to the first belt roller, and a servo motor is installed in the motor post. A drive gear disk is fitted onto the shaft of the servo motor, and a driven gear disk is provided on the first belt roller. The drive gear disk meshes with the driven gear disk. A square plug-in seat is provided on the measuring platform at the position of a straight track of the racetrack-shaped support track. The size acquisition mechanism includes a measuring box, a high-definition camera, and a supplementary light. The bottom of the measuring box is inserted into the square plug-in seat. A supplementary light is installed on one inner wall of the measuring box, and a high-definition camera is installed on the other side wall. The conveyor belt passes through the T-shaped notches on the other two side walls of the measuring box and moves between the high-definition camera and the supplementary light. The top of the measuring box is provided with a closed top cover.

[0006] The present invention is further configured such that both the first belt roller and the second belt roller are provided with belt cylinders, the cylindrical wall of the belt cylinder is provided with a first toothed rack, the inner side wall of the conveyor belt is provided with a second toothed rack, and the conveyor belt is sleeved on the belt cylinder;

[0007] The bottom of both the first and second belt rollers is provided with a rotating shaft, and two bearings are sleeved on the rotating shaft, with the bearings embedded in the bearing column.

[0008] The present invention is further configured such that the drill bit mounting assembly includes a cylindrical tube and a rubber sleeve, the cylindrical tube is inserted at the center of the upper surface of the transport plate, and the rubber sleeve is interference-fitted into the cylindrical tube.

[0009] The present invention is further configured such that the rubber sleeve has multiple models, and the inner diameter of the rubber sleeve of the multiple models is different.

[0010] The present invention is further configured such that the runway-shaped support track is cut off at the intersection of the square plug-in seat and the runway-shaped support track, and a support column is provided at the intersection of the square plug-in seat and the runway-shaped support track, with the top of the support column being flush with the top of the runway-shaped support track.

[0011] The present invention is further configured such that the high-definition camera enlarges the image taken by the PCB micro drill bit proportionally and then cuts off the length of the drill bit.

[0012] This utility model has the following beneficial effects:

[0013] This utility model uses a drill bit transport mechanism to transport a PCB micro drill bit to the shooting position of a high-definition camera. When the camera starts shooting, the photo of the PCB micro drill bit is input into the size editing module to measure the size of the fine needle part at the front end of the drill bit. When the measurement reaches the position where the fine needle thickens (arc-shaped gradient section), it is used as the measurement cut-off point. After the image is enlarged, the size is calculated and measured by cropping the image. The measurement accuracy is high, and continuous shooting and measurement can be performed, resulting in high measurement efficiency.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a structure for measuring the length of a micro drill bit for PCBs.

[0017] Figure 2 This is an exploded structural diagram of a length measurement structure for PCB micro drill bits.

[0018] Figure 3 This is a structural diagram of the measuring platform, the runway-shaped support track, and the square plug-in base.

[0019] Figure 4 This is a schematic diagram of the structure of the first belt roller.

[0020] Figure 5 This is a structural diagram of the conveyor belt and conveyor plate.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Measuring platform; 11. Square connector; 12. Bearing column; 13. Motor column; 130. Servo motor; 2. Measuring box; 21. Enclosed top cover; 22. Camera mounting port; 23. Fill light mounting bracket; 24. T-shaped notch; 3. High-definition camera; 4. Racetrack-shaped support rail; 41. Support column; 5. Conveyor belt; 51. Second rack; 6. Conveyor plate; 61. Cylindrical cylinder; 62. Rubber sleeve; 7. Second belt roller; 70. Bearing; 8. First belt roller; 81. First rack; 82. Driven gear disc; 83. Rotating shaft; 9. Fill light. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1-5This utility model relates to a length measurement structure for micro drill bits in PCB manufacturing, comprising a measuring platform 1, a drill bit transport mechanism, and a dimension acquisition mechanism. The measuring platform 1 is equipped with a racetrack-shaped support track 4. Each of the racetrack-shaped support track 4 has a bearing post 12 on the inner side of its semicircular ends. A first belt roller 8 and a second belt roller 7 are rotatably mounted within each bearing post 12. A transport belt 5 is fitted between the first belt roller 8 and the second belt roller 7. Transport plates 6 are fixed at equal intervals on the outer wall of the transport belt 5. A drill bit mounting assembly is mounted on the transport plate 6. A motor post 13 is located next to the bearing post 12 corresponding to the first belt roller 8. A servo motor 130 is installed within the motor post 13. A drive gear disk is fitted on the rotating shaft of the machine 130. A driven gear disk 82 is provided on the first belt roller 8. The drive gear disk meshes with the driven gear disk 82. A square plug-in seat 11 is provided on the measuring platform 1 at the position of a straight track of the racetrack-shaped support track 4. The size acquisition mechanism includes a measuring box 2, a high-definition camera 3 and a supplementary light 9. The bottom of the measuring box 1 is inserted into the square plug-in seat 11. A supplementary light 9 is installed on one inner wall of the measuring box 1, and a high-definition camera 3 is installed on the other side wall. The conveyor belt 5 passes through the T-shaped notches 24 on the other two side walls of the measuring box 2 and moves between the high-definition camera 3 and the supplementary light 9. A closed top cover 21 is provided on the top of the measuring box 2.

[0025] The conveyor belt 5 is driven by the servo motor 130 to move at a fixed distance. Each time a conveyor plate 6 is transported to the front of the high-definition camera 3, the high-definition camera 3 takes a picture of the PCB micro drill bit (it can capture the entire part of the PCB micro drill bit that needs to be measured). The captured picture is processed by the computer, enlarged, and then the length is measured. The length on the captured picture is proportionally enlarged to the actual length. When calculating, it can be proportionally reduced.

[0026] After taking a picture of one PCB micro drill bit, the next PCB micro drill bit is taken for measurement. This allows for continuous transport and measurement. After measurement, the PCB micro drill bit is transported to another straight track-shaped support rail 4, where it is picked up by a robotic arm and replaced with a new PCB micro drill bit for measurement. This cyclical transport method results in high measurement efficiency.

[0027] Both the first belt roller 8 and the second belt roller 7 are provided with belt drums. The cylindrical wall of the belt drum is provided with a first toothed rack 81, and the inner side wall of the conveyor belt 5 is provided with a second toothed rack 51. The conveyor belt 5 is sleeved on the belt drum.

[0028] The bottom of the first belt roller 8 and the second belt roller 7 are both provided with a rotating shaft 83, and two bearings 70 are sleeved on the rotating shaft 83. The bearings 70 are embedded in the bearing column 12.

[0029] The belt drum is used to drive the conveyor belt 5. The first rack 81 will mesh with the second rack 51. During the driving process, there will be no slippage.

[0030] The drill bit mounting assembly includes a cylindrical tube 61 and a rubber sleeve 62. The cylindrical tube 61 is inserted into the center of the upper surface of the transport plate 6, and the rubber sleeve 62 is interference-fitted into the cylindrical tube 61.

[0031] The rubber sleeve 62 is used to cover the handle of the PCB micro drill bit, but it is not tight. It is only used to keep the PCB micro drill bit vertical so that it can be easily picked up and put in mechanically.

[0032] The rubber sleeve 62 comes in various models, and the inner diameter of the rubber sleeve 62 varies among the various models.

[0033] The rubber sleeve 62 can be replaced with the corresponding model for different models of PCB micro drill bits so that the rubber sleeve 62 prevents the PCB micro drill bit from tilting and keeps the PCB micro drill bit in a vertical position.

[0034] The runway-shaped support track 4 is cut off at the intersection of the square plug-in seat 11 and the runway-shaped support track 4. A support column 41 is provided at the intersection of the square plug-in seat 11 and the runway-shaped support track 4. The top of the support column 41 is flush with the top of the runway-shaped support track 4.

[0035] The racetrack-shaped support track 4 has a gap at the intersection of the square plug-in seat 11. The gap will cause the transport plate 6 to sag. A support column 41 is set to provide a transition so that the transport plate 6 can slide smoothly from the support column 41 onto the straight racetrack-shaped support track 4 inside the square plug-in seat 11. The transport plate 6 is transported smoothly without bumping.

[0036] The high-definition camera 3 magnifies the image of the PCB micro drill bit proportionally and then cuts out the drill bit length. The system uses width detection to determine the length of the magnified drill bit segment to be measured. When the drill bit width changes by 10% of its diameter, it indicates that the arc transition section has been reached, which is the node position to be measured. Measuring the diameter change of the drill bit width to determine the measurement length results in high accuracy and efficiency.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A length measurement structure for micro drill bits in PCBs, characterized in that: The system includes a measuring platform (1), a drill bit transport mechanism, and a dimension acquisition mechanism. The measuring platform (1) is equipped with a racetrack-shaped support track (4). Each of the racetrack-shaped support track (4) has a bearing column (12) on the inner side of the semicircle at both ends. A first belt roller (8) and a second belt roller (7) are rotatably installed in each bearing column (12). A transport belt (5) is fitted between the first belt roller (8) and the second belt roller (7). Transport plates (6) are fixed at equal intervals on the outer wall of the transport belt (5). A drill bit mounting assembly is provided on the transport plate (6). A motor column (13) is provided next to the bearing column (12) corresponding to the first belt roller (8). A servo motor (130) is installed in the motor column (13). A drive gear is fitted on the shaft of the servo motor (130). The first belt roller (8) is provided with a driven gear disk (82), the drive gear disk meshes with the driven gear disk (82), the measuring platform (1) at the position of a straight track of the racetrack-shaped support track (4) is provided with a square plug-in seat (11), the size acquisition mechanism includes a measuring box (2), a high-definition camera (3) and a supplementary light (9), the bottom of the measuring box (2) is inserted into the square plug-in seat (11), a supplementary light (9) is installed on one inner wall of the measuring box (2) and a high-definition camera (3) is installed on the other side wall, the conveyor belt (5) moves through the T-shaped notch (24) on the other two side walls of the measuring box (2) and moves between the high-definition camera (3) and the supplementary light (9), and the top of the measuring box (2) is provided with a closed top cover (21).

2. The length measurement structure for PCB micro drill bits according to claim 1, characterized in that, Both the first belt roller (8) and the second belt roller (7) are provided with belt drums. The cylindrical wall of the belt drum is provided with a first toothed rack (81), and the inner side wall of the conveyor belt (5) is provided with a second toothed rack (51). The conveyor belt (5) is sleeved on the belt drum. The bottom of the first belt roller (8) and the second belt roller (7) are provided with a rotating shaft (83), and two bearings (70) are sleeved on the rotating shaft (83). The bearings (70) are embedded in the bearing column (12).

3. The length measurement structure for PCB micro drill bits according to claim 1, characterized in that, The drill bit mounting assembly includes a cylindrical tube (61) and a rubber sleeve (62). The cylindrical tube (61) is inserted at the center of the upper surface of the transport plate (6), and the rubber sleeve (62) is interference-fitted inside the cylindrical tube (61).

4. The length measurement structure for PCB micro drill bits according to claim 3, characterized in that, The rubber sleeve (62) has various models, and the inner diameter of the rubber sleeve (62) of the various models is different.

5. The length measurement structure for a PCB micro drill bit according to claim 1, characterized in that, The runway-shaped support track (4) is cut off at the intersection with the square plug-in seat (11). A support column (41) is provided at the intersection of the square plug-in seat (11) and the runway-shaped support track (4). The top of the support column (41) is flush with the top of the runway-shaped support track (4).

6. The length measurement structure for a PCB micro drill bit according to claim 1, characterized in that, The high-definition camera (3) enlarges the image taken by the PCB micro drill bit proportionally and then cuts out the length of the drill bit.

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