Automatic height measuring device of chip mounter

Abstract

The utility model discloses an automatic height measuring device of a chip mounter, and belongs to the technical field of chip mounters. The automatic height measuring device of the chip mounter comprises a base assembly, a driving mechanism, a stabilizing mechanism and a switching mechanism, the switching mechanism comprises a rotating disc, connecting blocks are connected to the two sides of the exterior of the rotating disc, limiting grooves are formed in the ends, away from the rotating disc, of the two connecting blocks, and limiting blocks are inserted into the two limiting grooves in a penetrating mode; the bottom ends of the two limiting blocks are connected with a laser distance measuring sensor and an ultrasonic sensor correspondingly, and the bottom faces of the opposite ends of the two connecting blocks are connected with a first infrared emitter and a second infrared emitter correspondingly. A first infrared receiver and a second infrared receiver are installed on the bottom face of the connecting plate and located over the first infrared transmitter and the second infrared transmitter respectively, the situation that the detection efficiency is affected by damage of the height measurement laser distance measuring sensor can be effectively avoided, and the height measurement laser distance measuring device has high practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to patch machine technical field, concretely is a kind of patch machine automatic height measuring device. BACKGROUND

[0002] Patch machine is also called mounting machine or surface mounting system, in production line, it is configured after glue dispenser or silk screen printing machine, is a kind of equipment that through moving mounting head accurately places surface mounting component on PCB pad, is divided into manual and full-automatic two kinds, patch machine is the equipment that material is taken out from feeder by mounting head and is automatically mounted to circuit board, is influenced by machine assembly precision, material and material tape packaging type, the height of different materials in feeder is different, if mounting head height is too low when taking material, material or material tape can be damaged, if height is too high, there will be gap between material and mounting head, leading to unable to suck up material, therefore, to guarantee taking material reliability, patch machine needs to detect the height of different materials one by one, then according to detection result, mounting head depression height is compensated accordingly when taking material.

[0003] A kind of patch machine automatic height measuring device is disclosed in Chinese patent with publication number CN221930591U, including patch machine height measuring frame, camera connecting block is equipped in the lower portion of the patch machine height measuring frame, grab camera is equipped in the lower portion of the camera connecting block, the bottom surface of the patch machine height measuring frame is fixedly connected with recess block, the bottom surface of the patch machine height measuring frame is fixedly connected with fixed block, the right side surface of the fixed block is fixedly embedded with threaded cylinder, the left side of the fixed block is equipped with push plate.This device is provided with threaded rod, threaded cylinder, rolling bearing, push plate, L-shaped plate and recess block, the cooperation of handle and threaded rod is utilized, to facilitate the rotation of threaded rod while moving inside it, while rolling bearing and push plate can be moved, at this time, push plate is away from L-shaped plate, and the positioning of L-shaped plate is released, so that workers can disassemble laser ray gun, vice versa, to facilitate the installation and positioning of laser ray gun, the operation is simple and convenient to use, and it is beneficial to current use;

[0004] The technical scheme of the scheme rotates handle to drive threaded rod to rotate inside threaded cylinder, so that push plate moves away from L-shaped plate to release the positioning of L-shaped plate, so that workers can disassemble laser ray gun, but in actual use, only laser ray gun is used to measure the height of material on feeder, when laser ray gun is damaged, height measurement cannot continue, and it needs to be disassembled and repaired, thereby affecting material height measurement efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of patch machine automatic height measuring device to solve the problems raised in the above background.

[0006] In view of the above problems, the technical scheme of the utility model is

[0007] A patching machine automatic height measuring device, including base assembly, drive mechanism, stable mechanism and switching mechanism, the switching mechanism includes carousel, the outside both sides of carousel are connected with connecting block, two connecting block are away from carousel one end inside and are equipped with limit groove, two limit groove inside are inserted with limit block, two limit block bottom respectively connected with laser ranging sensor and ultrasonic sensor, two connecting block opposite end bottom respectively connected with first infrared emitter and second infrared emitter, the base assembly includes connecting plate, the bottom of connecting plate is located first infrared emitter and second infrared emitter above respectively installs first infrared receiver and second infrared receiver.

[0008] Further, the upper end of the two limit blocks is connected with a round block, and the upper end of the two connecting blocks is connected with a positioning seat, a positioning groove is formed in the inner center of the positioning seat, the inner wall of the positioning groove is matched with the outer wall of the round block, first threaded holes are formed in the outer two sides of the round block, second threaded holes are formed in the outer two sides of the positioning seat, and bolts are threadedly connected between adjacent first threaded holes and second threaded holes.

[0009] The beneficial effects of the above further scheme are that when the laser ranging sensor or ultrasonic sensor is damaged and cannot continue to measure the height, the bolts between the first screw holes and the second screw holes are unscrewed, so that the round block and the positioning seat are no longer in a fixed connection state, and then the damaged laser ranging sensor or ultrasonic sensor is pulled down.

[0010] Further, the cross section of the two limit blocks is gear-shaped, and the outer walls of the two limit blocks are gap-fitted with the inner walls of the two limit grooves.

[0011] The beneficial effects of the above further scheme are that since the cross section of the limit block is gear-shaped and the limit block is gap-fitted with the limit groove, the limit block is inserted into the inside of the limit groove after the limit block and the limit groove are aligned, the bolts are reinstalled between the first threaded holes and the second threaded holes after the adjacent first threaded holes and second threaded holes are aligned, and the repaired laser ranging sensor or ultrasonic sensor is installed.

[0012] Further, the stable mechanism includes a fixed disc, the upper end of the fixed disc is connected with the bottom end of the connecting plate, the bottom end of the fixed disc is matched with the upper end of the carousel, a ring groove is formed in the inside of the fixed disc close to the bottom end, a plurality of support columns are arranged in the inside of the ring groove, a plurality of the bottom ends of the support columns are rotatably connected with a plurality of rolling balls, and the upper ends of the rolling balls are matched with the inner upper end of the ring groove.

[0013] The beneficial effects of adopting the above-mentioned further solution are that the combined use of the annular groove, support column and ball bearing makes the rotation of the turntable smoother, reduces frictional resistance, and improves the service life of the turntable. At the same time, it also provides stable support for the turntable, ensures the stability of the turntable during rotation, and improves the switching accuracy of the laser rangefinder and ultrasonic sensor.

[0014] Furthermore, the drive mechanism includes a power box, the bottom end of which is connected to the upper end of a connecting plate. A rotating shaft is rotatably connected inside the power box. The bottom end of the rotating shaft passes through a fixed plate and is clearance-fitted with a through hole in the fixed plate. The bottom end of the rotating shaft is connected to the upper end of a turntable. A worm gear is sleeved on the outside of the rotating shaft. A worm is driven by the worm gear. Both ends of the worm are connected to the inner wall of the power box through bearings.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, through the cooperation of the worm gear and the worm, the worm gear has the advantages of smooth transmission and high precision. When the worm rotates, the worm gear meshing with the worm can rotate, thereby realizing the rotation of the shaft. Since the bottom end of the shaft is connected to the upper end of the turntable, the turntable can then rotate.

[0016] Furthermore, a motor is installed on one side of the outer wall of the power box, and the output end of the motor passes through the power box and is connected to the worm gear for transmission.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by setting up a motor, it is easier to drive the worm gear to rotate when the motor is started.

[0018] Furthermore, a control panel is installed on the outer wall of the power box, and the control panel, the first infrared receiver, the second infrared receiver, and the motor are electrically connected by wires.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, since both the first infrared receiver and the second infrared receiver can receive infrared rays emitted by the first infrared transmitter and the second infrared transmitter, when the laser ranging sensor used for height measurement is damaged, in order to avoid affecting the detection efficiency, the drive mechanism drives the switching mechanism to rotate, so that the positions of the first infrared transmitter and the second infrared transmitter are exchanged. During the exchange process, when the first infrared receiver receives infrared rays emitted by the second infrared transmitter and the second infrared receiver receives infrared rays emitted by the first infrared transmitter, the received data is transmitted to the control panel. The control panel controls the motor to shut down, so that the switching mechanism no longer rotates, thereby realizing the exchange of positions between the ultrasonic sensor and the laser ranging sensor.

[0020] Furthermore, the upper end of the connecting plate is provided with connecting holes at the four corners, and the inner wall of the connecting holes is provided with several threads at equal intervals.

[0021] The advantage of adopting the above-mentioned further solution is that by setting a connecting hole and providing several threads inside the connecting hole, it is convenient to install the connecting plate in a designated position by tightening bolts.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic height measurement device for a chip mounter uses a laser rangefinder sensor. The laser rangefinder sensor emits an infrared laser beam, which aims at the material and reflects back to the sensor. By measuring the time interval of the reflected laser signal, the distance between the material and the laser rangefinder sensor can be determined, thus achieving height measurement. Alternatively, an ultrasonic sensor can be used. The ultrasonic sensor emits ultrasonic waves and receives the reflected echoes to measure the distance or position of an object, thus achieving height measurement. When the laser rangefinder sensor used for height measurement is damaged, to avoid affecting the detection efficiency, the drive mechanism drives the switching mechanism to rotate, causing the positions of the first infrared emitter and the second infrared emitter to exchange. During the exchange, when the first infrared receiver receives infrared light emitted by the second infrared emitter and the second infrared receiver receives infrared light emitted by the first infrared emitter, the received data is transmitted to the control panel. The control panel then controls the motor to shut down, preventing the switching mechanism from rotating. This achieves the exchange of positions between the ultrasonic sensor and the laser rangefinder sensor. The ultrasonic sensor continues to measure the height of the material above the feeder, while the damaged laser rangefinder sensor is removed by the operator. Attached Figure Description

[0023] Figure 1 A three-dimensional structural diagram of an automatic height measuring device for a chip mounter provided by this utility model;

[0024] Figure 2 A bottom-view three-dimensional structural diagram of an automatic height measuring device for a chip mounter provided by this utility model;

[0025] Figure 3 A three-dimensional structural diagram of the switching mechanism of an automatic height measuring device for a chip mounter provided by this utility model;

[0026] Figure 4 An exploded three-dimensional structural diagram of the connecting block of an automatic height measuring device for a chip mounter provided by this utility model;

[0027] Figure 5 An exploded three-dimensional structural diagram of the power mechanism and stabilizing mechanism of an automatic height measuring device for a chip mounter provided by this utility model.

[0028] In the diagram: 100, base assembly; 1001, connecting plate; 1002, first infrared receiver; 200, drive mechanism; 2001, power box; 2002, rotating shaft; 2003, worm gear; 2004, worm; 2005, motor; 2006, control panel; 300, stabilizing mechanism; 3001, fixed plate; 3002, annular groove; 3003, support column; 3004, ball bearing; 400, switching mechanism; 4001, turntable; 4002, connecting block; 4003, limiting groove; 4004, limiting block; 4005, laser rangefinder; 4006, ultrasonic sensor; 4007, round block; 4008, positioning seat; 4009, bolt; 4010, first infrared transmitter; 4011, second infrared transmitter. Detailed Implementation

[0029] 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 protection scope of the present utility model.

[0030] Please see Figures 1-5This utility model provides a technical solution: an automatic height measuring device for a chip mounter, comprising a base assembly 100, a drive mechanism 200, a stabilizing mechanism 300, and a switching mechanism 400. The switching mechanism 400 includes a turntable 4001, with connecting blocks 4002 connected to both outer sides of the turntable 4001. Each connecting block 4002 has a limiting groove 4003 inside its end furthest from the turntable 4001. A limiting block 4004 is inserted into each of the limiting grooves 4003, and a laser rangefinder is connected to the bottom of each limiting block 4004. Sensor 4005 and ultrasonic sensor 4006 are connected to the bottom surfaces of two connecting blocks 4002, with a first infrared emitter 4010 and a second infrared emitter 4011 respectively connected to opposite ends. The base assembly 100 includes a connecting plate 1001, with a first infrared receiver 1002 and a second infrared receiver respectively mounted on the bottom surface of the connecting plate 1001 directly above the first infrared emitter 4010 and the second infrared emitter 4011. By setting a laser rangefinder 4005, the laser rangefinder 4005 will emit a... An infrared laser beam is used to determine the distance between the material and the laser rangefinder 4005 by measuring the time interval of the reflected laser signal. An ultrasonic sensor 4006 is also used to measure the distance or position of the object by emitting ultrasonic waves and receiving the reflected echoes. In conjunction with the industrial camera on the pick-and-place machine, height measurement is achieved. When the laser rangefinder 4005 used for height measurement is damaged, to avoid affecting the detection efficiency, the drive mechanism 200 drives the switching mechanism 400 to rotate, so that the positions of the first infrared emitter 4010 and the second infrared emitter 4011 are exchanged. After the first infrared receiver 1002 receives the infrared light emitted by the second infrared emitter 4011 and the second infrared receiver receives the infrared light emitted by the first infrared emitter 4010, the switching mechanism 400 stops rotating, thereby realizing the exchange of positions between the ultrasonic sensor 4006 and the laser rangefinder 4005. The ultrasonic sensor 4006 continues to measure the height of the material above the feeder, while the damaged laser rangefinder 4005 is removed by the operator.

[0031] 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 protection scope of the present utility model.

[0032] Please see Figures 1-5This utility model provides a technical solution: Two limiting blocks 4004 are each connected to a circular block 4007 at their upper ends, and two connecting blocks 4002 are each connected to a positioning seat 4008 at their upper ends. A positioning groove is formed at the center of the positioning seat 4008, and the inner wall of the positioning groove fits against the outer wall of the circular block 4007. First threaded holes are formed on both outer sides of the circular block 4007, and second threaded holes are formed on both outer sides of the positioning seat 4008. Bolts 4009 are threadedly connected between adjacent first and second threaded holes. The cross-section of the two limiting blocks 4004 is gear-shaped, and the two limiting blocks 4004... The outer wall of 004 ​​is respectively fitted with the inner wall of the two limiting grooves 4003 with clearance. The stabilizing mechanism 300 includes a fixed plate 3001. The upper end of the fixed plate 3001 is connected to the bottom end of the connecting plate 1001, and the bottom end of the fixed plate 3001 is attached to the upper end of the turntable 4001. The fixed plate 3001 has an annular groove 3002 near the bottom end. Several support columns 3003 are provided inside the annular groove 3002. The bottom end of each support column 3003 is rotatably connected to a ball bearing 3004. The upper end of the ball bearing 3004 is attached to the upper end of the annular groove 3002. When the laser range sensor 40 When damage prevents further height measurement, unscrew the bolt 4009 between the first and second threaded holes to loosen the connection between the circular block 4007 and the positioning seat 4008. Then, pull the damaged laser rangefinder 4005 or ultrasonic sensor 4006 downwards. Since the limit block 4004 has a gear-shaped cross-section and a clearance fit with the limit groove 4003, it is easy to align the limit block 4004 with the limit groove 4003. Insert the limit block 4004 into the limit groove 4003 so that the adjacent first threaded hole and second threaded hole... After aligning the holes, reinstall bolt 4009 between the first and second threaded holes to install the repaired laser rangefinder 4005 or ultrasonic sensor 4006. Through the coordinated use of the annular groove 3002, support column 3003, and ball bearing 3004, the rotation of turntable 4001 is made smoother, frictional resistance is reduced, and the service life of turntable 4001 is improved. At the same time, it also provides stable support for turntable 4001, ensuring the stability of turntable 4001 during rotation and improving the switching accuracy of laser rangefinder 4005 and ultrasonic sensor 4006.

[0033] 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 protection scope of the present utility model.

[0034] Please see Figures 1-5This utility model provides a technical solution: the drive mechanism 200 includes a power box 2001, the bottom end of which is connected to the upper end of the connecting plate 1001, and a rotating shaft 2002 is rotatably connected inside the power box 2001. The bottom end of the rotating shaft 2002 passes through the fixed disk 3001 and is clearance-fitted with the through hole of the fixed disk 3001. The bottom end of the rotating shaft 2002 is connected to the upper end of the turntable 4001, and a worm gear 2003 is sleeved on the outside of the rotating shaft 2002. The worm gear 2003 drives the transmission... A worm gear 2004 is connected, with both ends of the worm gear 2004 connected to the inner wall of the power box 2001 via bearings. A motor 2005 is installed on one side of the outer wall of the power box 2001, with the output end of the motor 2005 passing through the power box 2001 and connected to the worm gear 2004 via transmission. A control panel 2006 is installed on the outer wall of the power box 2001, and the control panel 2006, the first infrared receiver 1002, the second infrared receiver, and the motor 2005 are electrically connected via wires. A connecting plate 10... Connecting holes are provided at the four corners of the upper end of 01. Several threads are evenly spaced on the inner wall of each connecting hole. A motor 2005 is installed; when the motor 2005 is started, it drives the worm gear 2004 to rotate, which in turn drives the worm wheel 2003, thereby rotating the shaft 2002. Since the bottom end of the shaft 2002 is connected to the upper end of the turntable 4001, the turntable 4001 rotates. When the laser rangefinder 4005 used for height measurement is damaged, to avoid affecting detection efficiency, the drive mechanism 200... The switching mechanism 400 is driven to rotate, causing the positions of the first infrared transmitter 4010 and the second infrared transmitter 4011 to be exchanged. During the exchange, when the first infrared receiver 1002 receives the infrared rays emitted by the second infrared transmitter 4011 and the second infrared receiver receives the infrared rays emitted by the first infrared transmitter 4010, the received data is transmitted to the control panel 2006. The control panel 2006 then controls the motor 2005 to shut down, causing the switching mechanism 400 to stop rotating.

[0035] Specifically, the working principle of this automatic height measurement device for a pick-and-place machine is as follows: During use, a laser rangefinder 4005 is set up. The laser rangefinder 4005 emits an infrared laser beam. By measuring the time interval of the reflected laser signal, and in conjunction with the industrial camera built into the pick-and-place machine, the distance between the material on the feeder and the laser rangefinder 4005 is determined. When the laser rangefinder 4005 used for height measurement is damaged, to avoid affecting the detection efficiency, starting the motor 2005 facilitates the rotation of the worm gear 2004, driving... The rotation of the worm gear 2003, in turn, causes the rotation of the shaft 2002. Since the bottom end of the shaft 2002 is connected to the upper end of the turntable 4001, the turntable 4001 rotates, causing the positions of the first infrared emitter 4010 and the second infrared emitter 4011 to exchange. During this exchange, when the first infrared receiver 1002 receives infrared radiation emitted by the second infrared emitter 4011, and the second infrared receiver receives infrared radiation emitted by the first infrared emitter 4010, the received data is... The data is transmitted to the control panel 2006, which shuts down the motor 2005, causing the switching mechanism 400 to stop rotating. This allows the ultrasonic sensor 4006 and the laser rangefinder 4005 to switch positions. The ultrasonic sensor 4006 remains above the feeder, continuing to measure the material height. The damaged laser rangefinder 4005 is then removed by the operator. By unscrewing the bolt 4009 between the first and second screw holes, the circular block 4007 is no longer fixedly connected to the positioning seat 4008. In the connected state, the damaged laser rangefinder 4005 is pulled downwards. Since the cross-section of the limiting block 4004 is gear-shaped and the limiting block 4004 and the limiting groove 4003 are in clearance fit, it is easy to align the limiting block 4004 and the limiting groove 4003. Then, the limiting block 4004 is inserted into the inside of the limiting groove 4003, so that the adjacent first threaded hole and second threaded hole are aligned. Then, the bolt 4009 is reinstalled between the first threaded hole and the second threaded hole to install the repaired laser rangefinder 4005.

Claims

1. An automatic height measuring device for a chip mounter, characterized in that, The system includes a base assembly (100), a drive mechanism (200), a stabilizing mechanism (300), and a switching mechanism (400). The switching mechanism (400) includes a turntable (4001). Connecting blocks (4002) are connected to both outer sides of the turntable (4001). Limiting grooves (4003) are formed inside the two connecting blocks (4002) at the ends away from the turntable (4001). Limiting blocks (4004) are inserted into the interiors of the two limiting grooves (4003). The bottom ends of the two limiting blocks (4004) are respectively... A laser rangefinder (4005) and an ultrasonic sensor (4006) are connected. The bottom surfaces of the two connecting blocks (4002) opposite each other are respectively connected to a first infrared emitter (4010) and a second infrared emitter (4011). The base assembly (100) includes a connecting plate (1001). The bottom surface of the connecting plate (1001) is located directly above the first infrared emitter (4010) and the second infrared emitter (4011), and a first infrared receiver (1002) and a second infrared receiver are respectively installed thereon.

2. The automatic height measuring device for a chip mounter according to claim 1, characterized in that, The upper ends of the two limiting blocks (4004) are each connected to a round block (4007), and the upper ends of the two connecting blocks (4002) are each connected to a positioning seat (4008). A positioning groove is provided at the center of the positioning seat (4008), and the inner wall of the positioning groove is in contact with the outer wall of the round block (4007). The outer sides of the round block (4007) are each provided with a first threaded hole, and the outer sides of the positioning seat (4008) are each provided with a second threaded hole. A bolt (4009) is threadedly connected between adjacent first threaded holes and second threaded holes.

3. The automatic height measuring device for a chip mounter according to claim 2, characterized in that, The cross-sections of the two limiting blocks (4004) are gear-shaped, and the outer walls of the two limiting blocks (4004) are respectively clearance-fitted with the inner walls of the two limiting grooves (4003).

4. The automatic height measuring device for a chip mounter according to claim 1, characterized in that, The stabilizing mechanism (300) includes a fixed plate (3001), the upper end of which is connected to the bottom end of the connecting plate (1001), and the bottom end of which is in contact with the upper end of the turntable (4001). The fixed plate (3001) has an annular groove (3002) inside near the bottom end. The annular groove (3002) has several support columns (3003) inside, and the bottom ends of the several support columns (3003) are rotatably connected to ball bearings (3004). The upper ends of the ball bearings (3004) are in contact with the upper end of the annular groove (3002).

5. The automatic height measuring device for a chip mounter according to claim 4, characterized in that, The drive mechanism (200) includes a power box (2001), the bottom end of which is connected to the upper end of a connecting plate (1001), and a rotating shaft (2002) is rotatably connected inside the power box (2001). The bottom end of the rotating shaft (2002) passes through a fixed plate (3001) and is clearance-fitted with a through hole in the fixed plate (3001). The bottom end of the rotating shaft (2002) is connected to the upper end of a turntable (4001), and a worm gear (2003) is sleeved on the outside of the rotating shaft (2002). The worm gear (2003) is driven by a worm (2004), and both ends of the worm (2004) are connected to the inner wall of the power box (2001) through bearings.

6. The automatic height measuring device for a chip mounter according to claim 5, characterized in that, A motor (2005) is installed on one side of the outer wall of the power box (2001). The output end of the motor (2005) passes through the power box (2001) and is connected to the worm gear (2004) for transmission.

7. The automatic height measuring device for a chip mounter according to claim 6, characterized in that, A control panel (2006) is installed on the outer wall of the power box (2001). The control panel (2006), the first infrared receiver (1002), the second infrared receiver and the motor (2005) are electrically connected by wires.

8. The automatic height measuring device for a chip mounter according to claim 1, characterized in that, The upper end of the connecting plate (1001) is provided with connecting holes at the four corners, and the inner wall of the connecting holes is provided with several threads at equal intervals.

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