Automatic focusing mechanism for suction nozzle

Abstract

The utility model discloses an automatic focusing mechanism for a suction nozzle, which relates to the technical field of chip mounters and comprises a rack, a height adjusting focusing assembly and an angle adjusting focusing assembly. The height adjusting focusing assembly comprises a threaded vertical rod rotatably installed on the rack in the vertical direction, a focusing base in threaded connection to the upper portion of the threaded vertical rod, a suction nozzle fixedly installed on the outer wall of the front side of the focusing base, a detector, a driver and a guider. The detector comprises a focusing camera, a laser distance measuring sensor and an industrial personal computer fixedly installed on the outer wall of the upper portion of the rear edge of the rack. According to the utility model, through cooperation of the height adjustment focusing assembly, the detector and the angle adjustment focusing assembly, accurate focusing can be conveniently carried out on the working height and the working angle of the suction nozzle, so that accurate surface mounting requirements of electronic components under different conditions can be better met; the precision of the mounting position of the electronic component can be better ensured, and the performance and the quality of the circuit board are further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a paster machine technical field especially relates to a suction nozzle automatic focusing mechanism. BACKGROUND

[0002] The paster machine is used to realize high speed, high precision full automatic component device and is the equipment that pastes, and the core element that paster machine works is suction nozzle. In the operation process of paster machine, suction nozzle needs to accurately suck electronic component and accurately mount it on the circuit board.

[0003] At present, many paster machine suction nozzles are prone to inaccurate focusing when meeting electronic components of different thicknesses, shapes or surface flatnesses in the use process, thereby leading to electronic component mounting position deviation and affecting the performance and quality of the circuit board. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a suction nozzle automatic focusing mechanism.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A suction nozzle automatic focusing mechanism, comprising a rack, a height adjusting focusing assembly and an angle adjusting focusing assembly;

[0007] The height adjusting focusing assembly comprises a threaded vertical rod rotatably installed on the rack, a focusing seat threadedly connected to the upper part of the threaded vertical rod, a suction nozzle fixedly installed on the front outer wall of the focusing seat, a detector, a driver and a guide.

[0008] The detector comprises a focusing camera fixedly installed on the side wall of the focusing seat, a laser ranging sensor fixedly installed on the bottom outer wall of the focusing seat and an industrial computer fixedly installed on the upper outer wall of the rear edge of the rack.

[0009] Preferably, the driver comprises a fixed cover fixedly connected to the top outer wall of the rack, a first stepper motor fixedly installed on the side wall of the fixed cover, a driving bevel gear fixedly sleeved on the output shaft of the first stepper motor and a driven bevel gear fixedly sleeved on the top end of the threaded vertical rod.

[0010] Preferably, the output shaft of the first stepper motor penetrates through one side of the fixed cover, and the driving bevel gear and the driven bevel gear are meshed with each other and located in the fixed cover.

[0011] Preferably, the guide comprises two guide vertical shafts symmetrically welded in the rack and two linear bearings fixedly embedded in the focusing seat, and the two linear bearings are movably connected with the two guide vertical shafts respectively.

[0012] Preferably, the angle-adjusting focusing assembly comprises a hollow seat, a second stepper motor fixedly installed on the rear outer wall of the hollow seat, a rotating shaft rotatably installed at the center of the top of the hollow seat, a rotating disc coaxially fixed on the outer wall of the top end of the rotating shaft, a worm fixedly sleeved on the output shaft of the second stepper motor and a worm wheel fixedly sleeved on the bottom end of the rotating shaft.

[0013] Preferably, the output shaft of the second stepper motor penetrates the rear edge of the hollow seat, the worm and the worm wheel are in meshing engagement and are both located in the hollow seat, and the rack is fixedly connected to the top outer wall of the rotating disc.

[0014] The electronic component focusing device has the advantages that:

[0015] Through the cooperation of the height-adjusting focusing assembly, the detector and the angle-adjusting focusing assembly, the working height and the working angle of the suction nozzle can be precisely focused, so that the precise mounting requirements of the electronic component under different conditions can be better adapted, the precision of the mounting position of the electronic component can be better ensured, and the performance and the quality of the circuit board are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective structural schematic view of the whole front view of the utility model;

[0017] Figure 2 It is a perspective enlarged structural schematic view of the bottom view of the focusing seat in the utility model;

[0018] Figure 3 It is a perspective structural schematic view of the whole rear view of the utility model;

[0019] Figure 4 It is a perspective enlarged structural schematic view of the driver in the utility model;

[0020] Figure 5 It is a front view structural schematic view of the utility model;

[0021] Figure 6 It is a perspective enlarged structural schematic view of the inside of the hollow seat in the utility model.

[0022] In the drawing: 1, rack; 2, threaded vertical rod; 3, focusing seat; 4, suction nozzle; 5, focusing camera; 6, laser ranging sensor; 7, fixed cover; 8, first stepper motor; 9, driving bevel gear; 10, driven bevel gear; 11, guide vertical shaft; 12, linear bearing; 13, hollow seat; 14, second stepper motor; 15, rotating shaft; 16, rotating disc; 17, worm; 18, worm wheel; 19, industrial computer. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] Embodiment 1, refer to Figures 1-5 A suction nozzle automatic focusing mechanism, comprising a rack 1 and a height adjusting focusing assembly;

[0025] Specifically, the height adjusting focusing assembly comprises a threaded vertical rod 2 rotatably installed on the rack 1, a focusing seat 3 threadedly connected to the upper part of the threaded vertical rod 2, a suction nozzle 4 fixedly installed on the front outer wall of the focusing seat 3, a detector, a driver and a guide;

[0026] Further, the detector comprises a focusing camera 5 fixedly installed on the side wall of the focusing seat 3, a laser ranging sensor 6 fixedly installed on the bottom outer wall of the focusing seat 3 and an industrial computer 19 fixedly installed on the upper part of the rear outer wall of the rack 1;

[0027] Further, the driver comprises a fixed cover 7 fixedly connected to the top outer wall of the rack 1, a first stepping motor 8 fixedly installed on the side wall of the fixed cover 7, a driving bevel gear 9 fixedly sleeved on the output shaft of the first stepping motor 8 and a driven bevel gear 10 fixedly sleeved on the top end of the threaded vertical rod 2, the output shaft of the first stepping motor 8 penetrates through one side of the fixed cover 7, the driving bevel gear 9 and the driven bevel gear 10 are mutually engaged and are both located in the fixed cover 7, the driving bevel gear 9 is controlled to rotate by the first stepping motor 8, and then the driven bevel gear 10 engaged with the driving bevel gear 9 drives the threaded vertical rod 2 to rotate in reverse;

[0028] Further, the guide comprises two guide vertical shafts 11 symmetrically welded in the rack 1 and two linear bearings 12 fixedly embedded in the focusing seat 3, the two linear bearings 12 are movably connected with the two guide vertical shafts 11 respectively, and the stability and smoothness of the linear motion of the focusing seat 3 are ensured by the setting of the guide;

[0029] In the specific implementation of the present embodiment, the optimal distance value for mounting electronic components is preset on the industrial computer 19, then the driving bevel gear 9 is controlled to rotate by the first stepping motor 8, then the driven bevel gear 10 engaged with the driving bevel gear 9 drives the threaded vertical rod 2 to rotate, under the guidance of the guide, the focusing seat 3 threadedly connected with the threaded vertical rod 2 drives the suction nozzle 4 to move downward and gradually approach the surface of the electronic components to be mounted, when the laser ranging sensor 6 accurately detects the optimal mounting distance value of the suction nozzle 4, the industrial computer 19 reacts to control the first stepping motor 8 to stop running at this time, so as to facilitate the accurate focusing of the working height of the suction nozzle 4, and further facilitate the better adaptation to the accurate mounting requirements of different electronic components.

[0030] Embodiment 2, refer toFigure 3 and Figures 5-6 The embodiment is based on the embodiment 1 and is optimized, specifically, the suction nozzle automatic focusing mechanism further comprises an angle adjusting focusing assembly.

[0031] Specifically, the angle adjusting focusing assembly comprises a hollow seat 13, a second stepping motor 14 fixedly installed on the rear outer wall of the hollow seat 13, a rotating shaft 15 rotatably installed at the top center of the hollow seat 13, a rotating disc 16 coaxially fixed on the top outer wall of the rotating shaft 15, a worm 17 fixedly sleeved on the output shaft of the second stepping motor 14, and a worm wheel 18 fixedly sleeved on the bottom end of the rotating shaft 15.

[0032] Further, the output shaft of the second stepping motor 14 penetrates the rear edge of the hollow seat 13, the worm 17 and the worm wheel 18 are in meshing relationship and are located in the hollow seat 13, and the rack 1 is fixedly connected to the top outer wall of the rotating disc 16.

[0033] In the specific implementation of the embodiment, the focusing camera 5 captures the image information of the electronic components to be mounted and transmits the image information to the industrial computer 19 for analysis and processing, and then the industrial computer 19 controls the second stepping motor 14 to operate according to the processing result, at this time, the worm 17 is driven to rotate by the second stepping motor 14, then the worm wheel 18 meshing with the worm 17 drives the rotating disc 16 on the rotating shaft 15 to rotate, thereby the working angle of the suction nozzle 4 can be accurately focused, and the accurate mounting requirements of different electronic components are further adapted.

[0034] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An automatic focusing mechanism for a suction nozzle, comprising a frame (1), characterized in that, It also includes a height adjustment focus assembly and an angle adjustment focus assembly; The height adjustment focusing assembly includes a threaded vertical rod (2) that is rotatably mounted on the frame (1), a focusing seat (3) that is threaded to the upper part of the threaded vertical rod (2), a suction nozzle (4) that is fixedly mounted on the front outer wall of the focusing seat (3), a detector, a driver and a guide; The detector includes a focusing camera (5) fixedly installed on the side wall of the focusing mount (3), a laser rangefinder (6) fixedly installed on the bottom outer wall of the focusing mount (3), and an industrial control computer (19) fixedly installed on the upper rear outer wall of the frame (1).

2. The automatic focusing mechanism for a suction nozzle according to claim 1, characterized in that, The driver includes a fixed cover (7) fixedly connected to the top outer wall of the frame (1), a first stepper motor (8) fixedly installed on the side wall of the fixed cover (7), a driving bevel gear (9) fixedly mounted on the output shaft of the first stepper motor (8), and a driven bevel gear (10) fixedly mounted on the top of the threaded vertical rod (2).

3. The automatic focusing mechanism for a suction nozzle according to claim 2, characterized in that, The output shaft of the first stepper motor (8) passes through one side of the fixed cover (7), and the driving bevel gear (9) and the driven bevel gear (10) mesh with each other and are both located inside the fixed cover (7).

4. The automatic focusing mechanism for a suction nozzle according to claim 1, characterized in that, The guide includes two guide shafts (11) symmetrically welded into the frame (1) and two linear bearings (12) fixedly embedded in the focus seat (3), and the two linear bearings (12) are movably connected to the two guide shafts (11) respectively.

5. The automatic focusing mechanism for a suction nozzle according to claim 1, characterized in that, The angle adjustment focusing assembly includes a hollow base (13), a second stepper motor (14) fixedly installed on the outer wall of the rear side of the hollow base (13), a rotating shaft (15) rotatably installed at the center of the top of the hollow base (13), a turntable (16) coaxially fixed to the outer wall of the top of the rotating shaft (15), a worm gear (17) fixedly mounted on the output shaft of the second stepper motor (14), and a worm wheel (18) fixedly mounted on the bottom end of the rotating shaft (15).

6. The automatic focusing mechanism for a suction nozzle according to claim 5, characterized in that, The output shaft of the second stepper motor (14) passes through the back of the hollow seat (13), the worm (17) and the worm wheel (18) mesh with each other and are both located inside the hollow seat (13), and the frame (1) is fixedly connected to the top outer wall of the turntable (16).

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