CN107498998A - A kind of eccentric sleeve type high-precision positioner of coding product examine machine shower nozzle - Google Patents

Abstract

The invention discloses an eccentric sleeve type high-precision positioning device for the spray head of a code-spraying product inspection machine, which includes a supporting plate and linear guide rails installed on both sides of the supporting plate. The block is slidably connected to the linear guide rails on both sides; the nozzle fine-tuning positioning mechanism is installed on the support plate, including the outer sleeve, the eccentric sleeve rotatably sleeved in the outer sleeve, and the rotatable set The rotating shaft of the eccentric hole in the eccentric sleeve; the rotating shaft is driven to rotate by the angle servo motor, and the eccentric sleeve is driven to rotate by the eccentric servo motor; the lower end of the rotating shaft is fixedly connected to the nozzle mounting seat. The invention has the advantages of simple processing and assembly, low cost and good adaptability, can realize accurate real-time automatic positioning of the nozzle, has high positioning precision, fast speed and simple operation.

Description

An eccentric sleeve-type high-precision positioning device for the nozzle of a coding quality inspection machine

technical field

The invention relates to the technical field of a code-spraying product inspection machine, in particular to an eccentric sleeve-type high-precision positioning device for a spray head of a code-spraying product inspection machine.

Background technique

The nozzle of the inkjet quality inspection machine needs to be moved when the job is changed, and its working position must be re-determined. For special jobs, the position of the nozzle needs to be adjusted in real time during the printing process, while the traditional inkjet quality inspection Most machines use mechanical adjustment devices, which require manual adjustment of the position. This manual adjustment method has the following disadvantages: cumbersome operation, time-consuming and laborious, slow progress, and cannot be adjusted in real time.

Contents of the invention

Aiming at the deficiencies of the existing technology, the present invention aims to provide an eccentric sleeve type high-precision positioning device for the spray head of the quality inspection machine. The eccentric sleeve is used to position the nozzle of the quality inspection machine. The processing and assembly are simple, the cost is low, and the adaptability Well, it can realize accurate and real-time automatic positioning of the nozzle, with high positioning accuracy, fast speed and simple operation.

In order to achieve the above object, the present invention adopts the following technical solutions:

An eccentric sleeve type high-precision positioning device for the spray head of a code-spraying quality inspection machine, including a supporting plate and linear guide rails installed on both sides of the supporting plate, and the two sides of the supporting plate are slidably connected by sliders Connected to the linear guide rails on both sides; the nozzle fine-tuning positioning mechanism is installed on the supporting plate, including the outer sleeve, the eccentric sleeve rotatably sleeved in the outer sleeve, and the eccentric sleeve rotatably arranged on the eccentric The rotating shaft of the eccentric hole in the sleeve; the rotating shaft is driven to rotate by the angle servo motor, and the eccentric sleeve is driven to rotate by the eccentric servo motor; the lower end of the rotating shaft is fixedly connected to the nozzle mounting seat;

The corner servo motor and the eccentric servo motor are controlled and connected to a PLC, and the PLC is also controlled and connected to a camera, and the camera is used to take images of the positions of materials to be printed and transmit them to the PLC.

Further, the eccentric servo motor is fixed on the supporting plate, and its output shaft is connected to the driving synchronous pulley through transmission, and the driving synchronous pulley is connected to the driven synchronous pulley through a synchronous belt. The moving synchronous pulley is fixedly connected to the top of the eccentric sleeve. Furthermore, both sides of the synchronous belt are respectively provided with tensioning wheel mechanisms to realize tension on both sides of the synchronous belt.

Further, the upper and lower ends of the eccentric sleeve are rotatably connected to the outer sleeve through tapered roller bearings respectively, and the outer rings of the tapered roller bearings at the upper and lower ends are respectively pressed by the outer retaining ring of the large bearing, and the conical roller bearings at the upper end The upper end surface of the roller bearing is pressed by the inner retaining ring of the bearing, and the lower end surface of the tapered roller bearing at the lower end is pressed by the inner washer of the bearing.

Further, the upper end and the lower end of the rotating shaft are respectively rotatably connected to the eccentric sleeve through a tapered roller bearing, and the upper end surface of the upper tapered roller bearing is compressed by a bearing stop ring.

Further, the outer diameter of the upper part of the rotating shaft is smaller than that of the lower part, and the lower part is exposed outside the eccentric sleeve. Furthermore, the lower part is rotatably connected to the rotating shaft bearing sleeve through a tapered roller bearing, and the rotating shaft bearing sleeve is fixedly connected to the eccentric sleeve.

The beneficial effect of the present invention is that: the eccentric sleeve is used to position the nozzle of the quality inspection machine, the processing and assembly is simple, the cost is low, and the adaptability is good, the precise real-time automatic positioning of the nozzle can be realized, the positioning accuracy is high, the speed is fast, and the operation is simple.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of Fig. 1;

Fig. 3 is a schematic structural diagram of the nozzle fine-tuning and positioning mechanism according to the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an eccentric sleeve according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the structure of the rotating shaft according to the embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the following examples are based on the premise of this technical solution, and provide detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

As shown in Figures 1-5, an eccentric sleeve type high-precision positioning device for the spray head of a coding product inspection machine includes a supporting plate 21 and linear guide rails 22 installed on both sides of the supporting plate 21. Both sides of the plate 21 are slidably connected to the linear guide rails 22 on both sides through the sliders 20 . The supporting plate 21 is equipped with a nozzle fine-tuning positioning mechanism, including an outer sleeve 3, an eccentric sleeve 1 rotatably sleeved in the outer sleeve 3, and an eccentric sleeve 1 rotatably arranged in the eccentric sleeve 1. The rotating shaft 2 of the eccentric hole; the rotating shaft 2 is driven to rotate by the angle servo motor 12, and the eccentric sleeve 1 is driven to rotate by the eccentric servo motor 121; the lower end of the rotating shaft 2 is fixedly connected to the nozzle mounting seat 19. In this embodiment, the angle servo motor 12 is fixed on the servo motor base 11 , and the top end of the rotating shaft 2 is connected to the output shaft of the angle servo motor 12 through a coupling 10 .

The corner servo motor and the eccentric servo motor are controlled and connected to a PLC, and the PLC is also controlled and connected to a camera, and the camera is used to take images of the positions of materials to be printed and transmit them to the PLC.

The working principle of the eccentric sleeve type high-precision positioning device of the nozzle of the above-mentioned inkjet quality inspection machine is: when positioning, firstly push the support plate to move linearly along the linear guide rail to the designated position. In this embodiment, the bottom of the linear guide rail is provided with an aluminum profile 25, and when the support plate is moved to a specified position, the support plate is fixed on the aluminum profile through the locking block 23 and the locking screw 24, thereby realizing Coarse adjustment of nozzle position. After the rough adjustment is completed, the device is automatically controlled by PLC.

The device is installed above the code inspection machine. After the code inspection machine is running, when a material is transported to the device, the PLC captures the position of the material on the conveyor belt to be printed by the camera, and calculates the eccentricity The angle at which the servo motor 121 and the angle servo motor 12 need to rotate. Then the PLC first controls and starts the eccentric servo motor, and the eccentric servo motor drives the rotation of the eccentric sleeve to realize the fine adjustment of the position of the nozzle. Thereafter, the PLC starts the angle servo motor, and the angle servo motor drives the rotation shaft to rotate, thereby realizing adjusting the angle of the spray head. So far, the precise positioning of the nozzle is completed.

When the next material is conveyed, the control system and the device repeat the above steps and go round and round to ensure that the print head will accurately print the QR code or barcode waiting to be printed on each material.

Further, the eccentric servo motor 121 is fixed on the supporting plate 21, and its output shaft is connected to the driving synchronous pulley 14 through the motor shaft sleeve 17, and the driving synchronous pulley 14 is connected to the driving synchronous pulley 14 through the timing belt 16. The driven synchronous pulley 13 is described, and the driven synchronous pulley 13 is fixedly connected to the top of the eccentric sleeve 1 .

Furthermore, both sides of the synchronous belt 16 are respectively provided with tensioning wheel mechanisms to realize tension on both sides of the synchronous belt 16 . In this embodiment, the tensioning wheel mechanism includes a tensioning wheel 15, a tensioning rod 26 and a tensioning top block 18, and the tensioning rod 26 includes a fixed section and a rotating section, both of which can rotate mutually through a rotating shaft 27 ground connection. The fixed section is connected to the tensioning top block, and the rotating section is connected to the tensioning wheel. By rotating the rotating section, the tensioning wheel can be used to tighten the synchronous belt, thereby adjusting the rotating speed of the synchronous belt, thereby adjusting the accuracy of position adjustment.

Further, the upper and lower ends of the eccentric sleeve 1 are rotatably connected to the outer sleeve 3 through tapered roller bearings 51 and 52, respectively, and the outer rings of the upper and lower tapered roller bearings 51 and 52 are respectively passed through the outer ring of the large bearing. The retaining rings 81 and 82 are compressed, the upper end surface of the tapered roller bearing 51 at the upper end is compressed by the inner retaining ring 7 of the bearing, and the lower end surface of the tapered roller bearing 52 at the lower end is compressed by the inner washer 83 of the bearing.

Further, the upper end and the lower end of the rotating shaft 2 are rotatably connected to the eccentric sleeve 1 through tapered roller bearings 61 and 62 respectively, and the upper end surface of the upper tapered roller bearing 61 is pressed by the bearing stop ring 9 .

Further, the outer diameter of the upper part of the rotating shaft 2 is smaller than that of the lower part, and the lower part is exposed outside the eccentric sleeve. In this embodiment, the lower part is rotatably connected to the rotating shaft bearing sleeve 4 through the tapered roller bearing 62 , and the rotating shaft bearing sleeve 4 is fixedly connected to the eccentric sleeve 1 . Designing the rotating shaft 2 with a small upper end and a larger lower end can make the rotating shaft 2 have better stability and reduce its swing when rotating.

For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all these changes and modifications should be included in the protection scope of the claims of the present invention.

Claims (7)

1. An eccentric sleeve type high-precision positioning device for the spray head of a coding inspection machine, characterized in that it includes a supporting plate and linear guide rails installed on both sides of the supporting plate, and the two sides of the supporting plate are respectively It is slidably connected to the linear guide rails on both sides through the slider; the nozzle fine-tuning positioning mechanism is installed on the support plate, including the outer sleeve, the eccentric sleeve rotatably sleeved in the outer sleeve, and the rotatable The rotating shaft of the eccentric hole in the eccentric sleeve; the rotating shaft is driven to rotate by the angle servo motor, and the eccentric sleeve is driven to rotate by the eccentric servo motor; the lower end of the rotating shaft is fixedly connected to the nozzle mounting seat; The corner servo motor and the eccentric servo motor are controlled and connected to a PLC, and the PLC is also controlled and connected to a camera, and the camera is used to take images of the positions of materials to be printed and transmit them to the PLC. 2. The eccentric sleeve-type high-precision positioning device for the spray head of the code-spraying inspection machine according to claim 1, wherein the eccentric servo motor is fixed on the supporting plate, and its output shaft is connected to the active timing belt through transmission. The driving synchronous pulley is connected to the driven synchronous pulley through a synchronous belt drive, and the driven synchronous pulley is fixedly connected to the top of the eccentric sleeve. 3. The eccentric sleeve type high-precision positioning device of the spray head of the code-spraying product inspection machine according to claim 2, wherein the two sides of the timing belt are respectively provided with tensioning wheel mechanisms for the two sides of the timing belt. Achieve tension. 4. The eccentric sleeve-type high-precision positioning device of the spray head of the inkjet quality inspection machine according to claim 1, wherein the upper end and the lower end of the eccentric sleeve are respectively rotatably connected to the outer sleeve through tapered roller bearings The outer rings of the upper and lower tapered roller bearings are respectively compressed by the outer retaining ring of the large bearing, the upper end surface of the upper tapered roller bearing is compressed by the inner retaining ring of the bearing, and the lower end surface of the lower tapered roller bearing is passed by the inner washer of the bearing Press tight. 5. The eccentric sleeve-type high-precision positioning device of the spray head of the coding quality inspection machine according to claim 1, wherein the upper end and the lower end of the rotating shaft are respectively rotatably connected to the eccentric sleeve through tapered roller bearings , the upper end surface of the tapered roller bearing at the upper end is compressed by the bearing retaining ring. 6. The eccentric sleeve type high-precision positioning device of the spray head of the inkjet quality inspection machine according to claim 1, wherein the outer diameter of the upper part of the rotating shaft is smaller than the outer diameter of the lower part, and the lower part is exposed to the Eccentric sleeve. 7. The eccentric sleeve-type high-precision positioning device of the nozzle of the spray code quality inspection machine according to claim 2, wherein the lower part is rotatably connected to the bearing sleeve of the rotating shaft through a tapered roller bearing, and the The rotating shaft bearing sleeve is fixedly connected to the eccentric sleeve.