Drilling hole overlap ratio detection device

Abstract

The utility model discloses a drill hole coincidence ratio detection device, which belongs to the technical field of drill hole detection and comprises an inverted U-shaped base, a programmable controller and a display screen are fixedly connected to the outer wall, close to the operation side, of the base in a staggered manner, and a first mounting through hole and a first driving cavity which are communicated with each other are formed in the base from top to bottom; an assembly rod is placed in the first mounting through hole, a rotation driving mechanism is assembled between the assembly rod and the base, and a plurality of groups of detection mechanisms are sequentially placed on the assembly rod from top to bottom at equal intervals above the base; compared with the prior art, the circuit board drilling coincidence degree detection device can detect the coincidence degree of multiple circuit board drilling holes drilled in the same position at the same time, can improve the efficiency of circuit board drilling coincidence degree detection, and is high in detection precision at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling detection, and particularly relates to a drilling coincidence detection device. Background Technique

[0002] A circuit board is a common basic component in electronic devices, which is used to connect electronic components and realize the functions of a circuit. During the processing of the circuit board, in order to adapt to the layout of electronic components, holes need to be drilled on the circuit board. The coincidence degree between the actual drilled holes and the expected drilled holes, that is, the drilling accuracy, is the basis for ensuring the accurate connection of electronic components and is extremely important. After the drilling is completed, it needs to be detected by a detection device.

[0003] Chinese Patent No. 202220132960.3 discloses a circuit board drilling detection device, which consists of a bottom plate, a detection box installed on the bottom plate, a liftable camera installed in the detection box, an adsorbable suction cup installed in the detection box, an openable box door installed at the feeding end of the detection box, and a computer installed outside the detection box. When the device conducts detection, the box door is opened, the circuit board is placed on the suction cup, adsorbed by the suction cup, the box door is closed, and then the camera is lowered through the lifting mechanism to take multiple photos of the circuit board, and the drilling accuracy is detected by analyzing the images taken multiple times by the computer.

[0004] The inventor of the present application found that the above-mentioned existing circuit board drilling detection device can only detect the drilling accuracy of one circuit board at a time, and the detection efficiency is low. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the utility model provides a drilling coincidence detection device, which has the characteristics of being able to improve the detection efficiency of the drilling coincidence of the circuit board and having high detection accuracy.

[0006] To achieve the above object, the utility model provides the following technical solution: a drilling coincidence detection device, including: an inverted U-shaped base, a programmable controller and a display screen are respectively and staggeredly fixedly connected to the outer wall of the base close to the operation side. The base is respectively provided with a first installation through hole and a first driving cavity that communicate with each other from top to bottom. An assembly rod is placed inside the first installation through hole, and a rotation driving mechanism is assembled between the assembly rod and the base. A plurality of groups of detection mechanisms are sequentially and equally spaced from top to bottom above the base. One group of detection mechanisms includes two pressure sensors symmetrically placed along the central axis of the assembly rod. A moving driving mechanism for driving the two pressure sensors to move in opposite directions is assembled between the two pressure sensors and the assembly rod. A plurality of circuit boards with drilled holes, which are the same in number as the detection mechanisms and are sleeved outside the corresponding detection mechanisms through the drilled holes, are stacked on the base. The display screen, the rotation driving mechanism, the pressure sensors and the moving driving mechanism are electrically connected to the programmable controller by wires, and the pressure sensors are electrically connected to the display screen by wires.

[0007] Furthermore, the rotation drive mechanism includes a first motor fixedly connected to the bottom end of the base, a first driven drive shaft connected to the bottom wall of the first drive cavity corresponding to the first mounting through hole position through a bearing, and an internal thread groove opened at the bottom end of the assembly rod, the output shaft of the first motor passes through the base and extends into the first drive cavity and is connected to the active drive shaft through a coupling, the active drive shaft is fixedly sleeved with a driving gear at one end away from the first motor, the first driven drive shaft is fixedly sleeved with a first driven gear meshing with the driving gear at the end away from the bearing, the first driven drive shaft is fixedly sleeved with a first driven external threaded rod extending into the internal thread groove and threadedly connected to the internal thread groove at the end away from the bearing, and the first motor is connected to the programmable controller by wires.

[0008] Furthermore, the mobile driving mechanism includes a second driving cavity opened inside the assembly rod, two movable openings opened on the assembly rod symmetrically along the central axis of the second driving cavity, an upper connecting rod fixedly connected to a pressure sensor near the upper side wall of the assembly rod, extending into the second driving cavity through the movable opening on the same side, and a lower connecting rod fixedly connected to another pressure sensor near the lower side wall of the assembly rod, extending into the second driving cavity through the movable opening on the same side. The upper connecting rod and the lower connecting rod extend into the second driving cavity and are respectively provided with assembly grooves near the side walls. A plurality of transmission teeth are fixedly connected in the assembly grooves at equal intervals. A driving gear is meshed and transmitted between the plurality of transmission teeth on the upper side and the plurality of transmission teeth on the lower side. A rotating driving mechanism for driving the plurality of driving gears to rotate in the same direction is installed between the plurality of driving gears and the assembly rod, and the rotating driving mechanism is connected to the programmable controller by wires.

[0009] Furthermore, the rotary drive mechanism includes a second motor fixedly connected to the top of the assembly rod, a driving rod placed inside the assembly rod, and a rotating drive shaft placed in the second drive cavity. The top of the driving rod is connected to the output shaft of the second motor through a coupling, the bottom end of the driving rod passes through a plurality of second drive cavities and is connected to the bottom wall of the lowest second drive cavity through a bearing, the driving rod is connected to the through section of the assembly rod through a bearing, a hollow worm is fixedly sleeved on the driving rod in the second drive cavity, one end of the rotating drive shaft is connected to the inner wall of the assembly rod through a bearing, the other end of the rotating drive shaft passes through the fixedly sleeved driving gear and extends to the other side, which is fixedly sleeved with a worm wheel meshing with the hollow worm, and a wire is connected between the second motor and the programmable controller.

[0010] Furthermore, the upper connecting rod and the lower connecting rod are respectively provided with movable grooves in the middle of the side walls away from each other, and the top of the upper movable opening and the bottom of the lower movable opening are respectively fixed with movable rods extending into the movable grooves on the same side corresponding to the positions of the movable grooves on the same side.

[0011] Furthermore, the bottom wall of the first driving cavity is connected to a plurality of second driven driving shafts through bearings, a second driven gear is fixedly sleeved on the top end of the second driven driving shaft, the second driven gear adjacent to the first driven gear is meshingly connected to the first driven gear, the adjacent second driven gears are meshingly connected, a second driven externally threaded rod is fixedly connected to the top end of the second driven driving shaft, and a second mounting through hole communicating with the first driving cavity is provided at the top end of the base corresponding to the position of the second driven externally threaded rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can simultaneously detect the overlap of multiple circuit board holes drilled at the same position. Compared with the prior art, it can improve the efficiency of circuit board hole overlap detection and has high detection accuracy.

[0014] 2. The drilling coincidence detection structure position of the utility model can be adjusted according to the drilling position of the circuit board to improve the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a vertical cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 It is a vertical cross-sectional view from another perspective of the utility model;

[0019] Figure 5 For this utility model Figure 4 Enlarged view of point B in the middle;

[0020] In the figure: 1, base; 2, programmable controller; 3, display screen; 4, circuit board with drilling holes; 5, driving gear; 6, first motor; 7, driving drive shaft; 8, first driven drive shaft; 9, first driven gear; 10, first mounting through hole; 11, second driven drive shaft; 12, second driven external threaded rod; 13, second driven gear; 14, second mounting through hole; 15, first drive cavity; 16, assembly rod; 17, second drive cavity; 18, pressure sensor; 19, lower connecting rod; 20, transmission tooth; 21, rotating drive shaft; 22, driving gear; 23, movable opening; 24, upper connecting rod; 25, movable groove; 26, movable rod; 27, internal thread groove; 28, first driven external threaded rod; 29, driving rod; 30, hollow worm; 31, worm wheel; 32, second motor. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1

[0023] See also Figure 1-5 The utility model provides the following technical solutions: a drilling coincidence detection device, comprising: an inverted shaped base 1, a programmable controller 2 and a display screen 3 are staggered and fixedly connected to the outer wall of the operating side of the base 1, wherein the display screen 3 is provided with a plurality of display areas at equal intervals from top to bottom, and one display area is connected to a pressure sensor 18 by wires, and the base 1 is provided with a first mounting through hole 10 and a first driving cavity 15 which are interconnected from top to bottom, an assembly rod 16 is placed inside the first mounting through hole 10, a rotation driving mechanism is arranged between the assembly rod 16 and the base 1, and the assembly rod 16 is located on the base 1 There are multiple groups of detection mechanisms placed in sequence with equal intervals from top to bottom, one group of detection mechanisms includes two pressure sensors 18 symmetrically placed along the central axis of the assembly rod 16, a mobile drive mechanism for driving the two pressure sensors 18 to move in opposite directions is installed between the two pressure sensors 18 and the assembly rod 16, and the base 1 is stacked with drilled circuit boards 4 with the same number as the detection mechanisms and connected to the outside of the corresponding detection mechanisms through drilled holes, the display screen 3, the rotation drive mechanism, the pressure sensor 18 and the mobile drive mechanism are connected to the programmable controller 2 by wires, and the pressure sensor 18 is connected to the display screen 3 by wires.

[0024] See attached Figure 1-3Before the device performs detection, multiple circuit boards 4 with drilled holes are stacked and placed outside multiple groups of detection mechanisms through the drilled holes, and the drilled holes on a circuit board 4 with drilled holes are placed outside a group of detection mechanisms at the same position; when the device performs detection, the moving distance of two pressure sensors 18 of a group of detection mechanisms, that is, the driving time of the mobile driving mechanism, is set through the programmable controller 2 according to the drilled hole diameter of the circuit board 4 with drilled holes, and the rotation time and number of the rotation driving mechanism are set at the same time. When the rotation driving mechanism reaches the set number of rotations, the two pressure sensors 18 of a group of detection mechanisms respectively complete 360° rotation. After the setting is completed, the mobile driving mechanism is controlled to start through the programmable controller 2, and the mobile driving mechanism drives the two pressure sensors 18 of the multiple groups of detection mechanisms to move away from each other until the set driving time is reached and the detection mechanism stops. At this time, observe multiple Whether the pressure values ​​of the pressure sensors 18 are the same, if they are the same, the mobile drive mechanism drives the two pressure sensors 18 of the multiple detection mechanisms to reset, and then the programmable controller 2 controls the rotation drive mechanism to start, and the rotation drive mechanism drives the assembly rod 16 to rotate until it reaches the set rotation time and stops. At this time, the pressure value is measured according to the above method. If the pressure values ​​are the same, the rotation and pressure value are measured according to the above method again until the rotation drive mechanism reaches the number of rotations and stops. At this time, the detection of the all-round wall of the drilling is completed. If the pressure values ​​are all the same, the overlap is high and the drilling is accurate. Take out the multiple stacked circuit boards 4 with holes. If the pressure values ​​measured at one time in the above process are different, the drilling overlap of the circuit boards 4 with holes corresponding to the different pressure values ​​is poor, and the circuit boards 4 with holes can be taken out for subsequent processing.

[0025] Specifically, the rotation drive mechanism includes a first motor 6 fixedly connected to the bottom end of the base 1, a first driven drive shaft 8 connected to the bottom wall of the first drive cavity 15 corresponding to the first mounting through hole 10 through a bearing, and an internal thread groove 27 opened at the bottom end of the assembly rod 16. The output shaft of the first motor 6 passes through the base 1 and extends into the first drive cavity 15 and is connected to the active drive shaft 7 through a coupling. The active drive shaft 7 is fixedly sleeved with a driving gear 5 at one end away from the first motor 6, and the first driven drive shaft 8 is fixedly sleeved with a first driven gear 9 meshing with the driving gear 5 at the end away from the bearing. The first driven drive shaft 8 is fixedly sleeved with a first driven external thread rod 28 extending into the internal thread groove 27 and threadedly connected to the internal thread groove 27 at the end away from the bearing. The first motor 6 is connected to the programmable controller 2 by a wire.

[0026] See attached Figure 2 and 4When the rotation drive mechanism is working, the first motor 6 is started by the programmable controller 2, the first motor 6 drives the output shaft to rotate, the output shaft of the first motor 6 drives the active drive shaft 7 to rotate, the active drive shaft 7 drives the active gear 5 to rotate, the active gear 5 drives the first driven gear 9 to rotate, the first driven gear 9 drives the first driven drive shaft 8 to rotate, the first driven drive shaft 8 drives the first driven external threaded rod 28 to rotate, the first driven external threaded rod 28 drives the assembly rod 16 to rotate, the assembly rod 16 drives multiple sets of detection mechanisms to rotate, thereby realizing the rotation drive function.

[0027] Specifically, the mobile driving mechanism includes a second driving chamber 17 opened inside the assembly rod 16, two movable openings 23 opened on the assembly rod 16 symmetrically along the central axis of the second driving chamber 17, an upper connecting rod 24 fixedly connected to a pressure sensor 18 near the upper side wall of the assembly rod 16, extending into the second driving chamber 17 through the movable opening 23 on the same side, and a lower connecting rod 19 fixedly connected to another pressure sensor 18 near the lower side wall of the assembly rod 16, extending into the second driving chamber 17 through the movable opening 23 on the same side. The upper connecting rod 24 and the lower connecting rod 19 extend into the second driving chamber 17 and are respectively provided with assembly grooves near the side walls. A plurality of transmission teeth 20 are fixedly connected in the assembly grooves at equal intervals. A driving gear 22 is meshed and transmitted between the upper plurality of transmission teeth 20 and the lower plurality of transmission teeth 20. A rotating driving mechanism for driving the plurality of driving gears 22 to rotate in the same direction is installed between the plurality of driving gears 22 and the assembly rod 16, and the rotating driving mechanism is connected to the programmable controller 2 by wires.

[0028] See attached Figure 3 When the mobile driving mechanism is working, the programmable controller 2 controls the rotation driving mechanism to start, and the rotation driving mechanism drives the multiple driving gears 22 to rotate forward or reversely. During the forward or reverse rotation of the multiple driving gears 22, the multiple transmission teeth 20 meshing with the second driving cavity 17 drive the upper connecting rod 24 and the lower connecting rod 19 to move in a direction away from or close to each other. The upper connecting rod 24 and the lower connecting rod 19 respectively drive the connected pressure sensors 18 to move in the same direction, thereby realizing the extension detection or reset movement between the two pressure sensors 18 of a group of detection mechanisms.

[0029] Specifically, the rotary drive mechanism includes a second motor 32 fixedly connected to the top of the assembly rod 16, a drive rod 29 placed inside the assembly rod 16, and a rotating drive shaft 21 placed in the second drive cavity 17. The top of the drive rod 29 is connected to the output shaft of the second motor 32 through a coupling, the bottom end of the drive rod 29 passes through multiple second drive cavities 17 and is connected to the bottom wall of the lowest second drive cavity 17 through a bearing, the drive rod 29 is connected to the through section of the assembly rod 16 through a bearing, a hollow worm 30 is fixedly sleeved on the drive rod 29 in the second drive cavity 17, one end of the rotating drive shaft 21 is connected to the inner wall of the assembly rod 16 through a bearing, the other end of the rotating drive shaft 21 passes through the fixedly sleeved drive gear 22 and extends to the other side, where a worm wheel 31 meshing with the hollow worm 30 is fixedly sleeved, and the second motor 32 is connected to the programmable controller 2 by a wire.

[0030] See attached Figure 5 When the rotation drive mechanism is working, the second motor 32 is controlled to start by the programmable controller 2, the second motor 32 drives the output shaft to rotate forward and reversely, the output shaft of the second motor 32 drives the driving rod 29 to rotate forward and reversely, the driving rod 29 drives the multiple hollow worm gears 30 to rotate forward and reversely, the multiple hollow worm gears 30 drive the meshing connected worm gears 31 to rotate forward and reversely, the multiple worm gears 31 drive the connected rotating drive shafts 21 to rotate forward and reversely, the multiple rotating drive shafts 21 drive the connected driving gears 22 to rotate forward and reversely, thereby realizing the rotation drive of the driving gear 22.

[0031] Specifically, the upper connecting rod 24 and the lower connecting rod 19 are each provided with a movable groove 25 in the middle of the side wall away from each other, and the top of the upper movable opening 23 and the bottom of the lower movable opening 23 are respectively fixed with movable rods 26 extending into the movable groove 25 on the same side corresponding to the positions of the movable groove 25 on the same side.

[0032] See attached Figure 3 During the movement of the upper connecting rod 24 and the lower connecting rod 19, the movement stability can be improved due to the movement limitation of the movable rod 26 and the movable groove 25, and the problem of excessive movement and separation can be avoided.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that:

[0035] Specifically, the bottom wall of the first drive cavity 15 is connected to multiple second driven drive shafts 11 through bearings, the top of the second driven drive shaft 11 is fixedly sleeved with a second driven gear 13, the second driven gear 13 adjacent to the first driven gear 9 is meshingly connected with the first driven gear 9, and the adjacent second driven gears 13 are meshingly connected, and the top of the second driven drive shaft 11 is fixedly connected to a second driven externally threaded rod 12, and the top of the base 1 is provided with a second mounting through hole 14 connected to the first drive cavity 15 corresponding to the position of the second driven externally threaded rod 12.

[0036] See attached Figure 2 , the position of the assembly rod 16 can be adjusted according to the drilling position of the drilled circuit board 4. The specific adjustment method is: rotate the assembly rod 16 in the reverse direction to disengage the internal thread groove 27 on the assembly rod 16 from the first driven external thread rod 28, then take out the assembly rod 16 through the first mounting through hole 10, extend the assembly rod 16 into the first driving cavity 15 through the second mounting through hole 14 at the matching position, and then rotate the assembly rod 16 forward to thread the internal thread groove 27 on the assembly rod 16 with the second driven external thread rod 12 at the matching position.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling coincidence detection device, It is characterized in that include: An inverted shaped base (1) is provided, wherein a programmable controller (2) and a display screen (3) are staggered and fixedly connected to the outer wall of the operating side of the base (1), wherein the base (1) is provided with a first mounting through hole (10) and a first driving cavity (15) which are interconnected from top to bottom, wherein an assembly rod (16) is placed inside the first mounting through hole (10), wherein a rotation driving mechanism is arranged between the assembly rod (16) and the base (1), wherein the assembly rod (16) is located above the base (1), and wherein a plurality of detection mechanisms are arranged in sequence from top to bottom at equal intervals, wherein a group of the detection mechanisms comprises a plurality of detection mechanisms arranged along the assembly rod (16) Two pressure sensors (18) are symmetrically placed about the central axis, a moving drive mechanism is installed between the two pressure sensors (18) and the assembly rod (16) to drive the two pressure sensors (18) to move in opposite directions, a number of circuit boards (4) with holes drilled are stacked on the base (1) and the same number as the detection mechanisms are connected to the outside of the corresponding detection mechanisms through drilling holes, the display screen (3), the rotation drive mechanism, the pressure sensor (18) and the moving drive mechanism are connected to the programmable controller (2) by wires, and the pressure sensor (18) is connected to the display screen (3) by wires.

2. A drilling coincidence detection device according to claim 1, Features: The rotary drive mechanism comprises a first motor (6) fixedly connected to the bottom end of the base (1), a first driven drive shaft (8) connected to the bottom wall of the first drive cavity (15) at a position corresponding to the first mounting through hole (10) through a bearing, and an internal thread groove (27) provided at the bottom end of the assembly rod (16); the output shaft of the first motor (6) passes through the base (1) and extends into the first drive cavity (15) and is connected to the active drive shaft (7) through a coupling; the active drive shaft (7) is fixedly sleeved with a driving gear (5) at one end away from the first motor (6); the first driven drive shaft (8) is fixedly sleeved with a first driven gear (9) meshingly connected to the driving gear (5) at the end away from the bearing; the first driven drive shaft (8) is fixedly sleeved with a first driven external thread rod (28) extending into the internal thread groove (27) and threadedly connected to the internal thread groove (27) at the end away from the bearing; and the first motor (6) is connected to the programmable controller (2) by a wire.

3. A drilling coincidence detection device according to claim 1, Features: The mobile drive mechanism comprises a second drive chamber (17) opened inside the assembly rod (16), two movable openings (23) opened on the assembly rod (16) symmetrically along the central axis of the second drive chamber (17), an upper connecting rod (24) fixedly connected to a pressure sensor (18) near the upper side wall of the assembly rod (16) and extending through the movable opening (23) on the same side to the second drive chamber (17), and a second connecting rod (24) fixedly connected to another pressure sensor (18) near the lower side wall of the assembly rod (16) and extending through the movable opening (23) on the same side to the second drive chamber (17). The lower connecting rod (19), the upper connecting rod (24) and the lower connecting rod (19) extend into the second driving cavity (17) and are respectively provided with assembly grooves close to the side walls. A plurality of transmission teeth (20) are fixedly connected at equal intervals in the assembly grooves. A driving gear (22) is meshed and transmitted between the plurality of transmission teeth (20) on the upper side and the plurality of transmission teeth (20) on the lower side. A rotating driving mechanism for driving the plurality of driving gears (22) to rotate in the same direction is arranged between the plurality of driving gears (22) and the assembly rod (16). The rotating driving mechanism is connected to the programmable controller (2) by wires.

4. A drilling coincidence detection device according to claim 3, Features: The rotary drive mechanism comprises a second motor (32) fixedly connected to the top of the assembly rod (16), a driving rod (29) placed inside the assembly rod (16), and a rotating drive shaft (21) placed in the second drive cavity (17); the top of the driving rod (29) is connected to the output shaft of the second motor (32) through a coupling; the bottom of the driving rod (29) passes through a plurality of second drive cavities (17) and is connected to the bottom wall of the lowest second drive cavity (17) through a bearing; the driving rod (29) is connected to the through section of the assembly rod (16) through a bearing; a hollow worm (30) is fixedly sleeved on the driving rod (29) and located in the second drive cavity (17); one end of the rotating drive shaft (21) is connected to the inner wall of the assembly rod (16) through a bearing; the other end of the rotating drive shaft (21) passes through the fixedly sleeved driving gear (22) and extends to the other side, where a worm wheel (31) meshingly connected to the hollow worm (30) is fixedly sleeved; and the second motor (32) is connected to the programmable controller (2) by a wire.

5. A drilling coincidence detection device according to claim 3, Features: The upper connecting rod (24) and the lower connecting rod (19) are each provided with a movable groove (25) in the middle of the side wall away from each other, and the top end of the upper movable opening (23) and the bottom end of the lower movable opening (23) are respectively fixedly connected to the movable rods (26) extending into the movable groove (25) on the same side at the positions corresponding to the movable groove (25) on the same side.

6. A drilling coincidence detection device according to claim 2, Features: The bottom wall of the first drive cavity (15) is connected to a plurality of second driven drive shafts (11) via bearings; a second driven gear (13) is fixedly sleeved on the top end of the second driven drive shaft (11); the second driven gear (13) adjacent to the first driven gear (9) is meshingly connected to the first driven gear (9); adjacent second driven gears (13) are meshingly connected to each other; a second driven externally threaded rod (12) is fixedly connected to the top end of the second driven drive shaft (11); a second mounting through hole (14) communicating with the first drive cavity (15) is provided at the top end of the base (1) corresponding to the position of the second driven externally threaded rod (12).

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